gitweb / gitweb.perlon commit blame: improve diagnosis for "--reverse NEW" (d993ce1)
   1#!/usr/bin/perl
   2
   3# gitweb - simple web interface to track changes in git repositories
   4#
   5# (C) 2005-2006, Kay Sievers <kay.sievers@vrfy.org>
   6# (C) 2005, Christian Gierke
   7#
   8# This program is licensed under the GPLv2
   9
  10use 5.008;
  11use strict;
  12use warnings;
  13use CGI qw(:standard :escapeHTML -nosticky);
  14use CGI::Util qw(unescape);
  15use CGI::Carp qw(fatalsToBrowser set_message);
  16use Encode;
  17use Fcntl ':mode';
  18use File::Find qw();
  19use File::Basename qw(basename);
  20use Time::HiRes qw(gettimeofday tv_interval);
  21binmode STDOUT, ':utf8';
  22
  23if (!defined($CGI::VERSION) || $CGI::VERSION < 4.08) {
  24        eval 'sub CGI::multi_param { CGI::param(@_) }'
  25}
  26
  27our $t0 = [ gettimeofday() ];
  28our $number_of_git_cmds = 0;
  29
  30BEGIN {
  31        CGI->compile() if $ENV{'MOD_PERL'};
  32}
  33
  34our $version = "++GIT_VERSION++";
  35
  36our ($my_url, $my_uri, $base_url, $path_info, $home_link);
  37sub evaluate_uri {
  38        our $cgi;
  39
  40        our $my_url = $cgi->url();
  41        our $my_uri = $cgi->url(-absolute => 1);
  42
  43        # Base URL for relative URLs in gitweb ($logo, $favicon, ...),
  44        # needed and used only for URLs with nonempty PATH_INFO
  45        our $base_url = $my_url;
  46
  47        # When the script is used as DirectoryIndex, the URL does not contain the name
  48        # of the script file itself, and $cgi->url() fails to strip PATH_INFO, so we
  49        # have to do it ourselves. We make $path_info global because it's also used
  50        # later on.
  51        #
  52        # Another issue with the script being the DirectoryIndex is that the resulting
  53        # $my_url data is not the full script URL: this is good, because we want
  54        # generated links to keep implying the script name if it wasn't explicitly
  55        # indicated in the URL we're handling, but it means that $my_url cannot be used
  56        # as base URL.
  57        # Therefore, if we needed to strip PATH_INFO, then we know that we have
  58        # to build the base URL ourselves:
  59        our $path_info = decode_utf8($ENV{"PATH_INFO"});
  60        if ($path_info) {
  61                # $path_info has already been URL-decoded by the web server, but
  62                # $my_url and $my_uri have not. URL-decode them so we can properly
  63                # strip $path_info.
  64                $my_url = unescape($my_url);
  65                $my_uri = unescape($my_uri);
  66                if ($my_url =~ s,\Q$path_info\E$,, &&
  67                    $my_uri =~ s,\Q$path_info\E$,, &&
  68                    defined $ENV{'SCRIPT_NAME'}) {
  69                        $base_url = $cgi->url(-base => 1) . $ENV{'SCRIPT_NAME'};
  70                }
  71        }
  72
  73        # target of the home link on top of all pages
  74        our $home_link = $my_uri || "/";
  75}
  76
  77# core git executable to use
  78# this can just be "git" if your webserver has a sensible PATH
  79our $GIT = "++GIT_BINDIR++/git";
  80
  81# absolute fs-path which will be prepended to the project path
  82#our $projectroot = "/pub/scm";
  83our $projectroot = "++GITWEB_PROJECTROOT++";
  84
  85# fs traversing limit for getting project list
  86# the number is relative to the projectroot
  87our $project_maxdepth = "++GITWEB_PROJECT_MAXDEPTH++";
  88
  89# string of the home link on top of all pages
  90our $home_link_str = "++GITWEB_HOME_LINK_STR++";
  91
  92# extra breadcrumbs preceding the home link
  93our @extra_breadcrumbs = ();
  94
  95# name of your site or organization to appear in page titles
  96# replace this with something more descriptive for clearer bookmarks
  97our $site_name = "++GITWEB_SITENAME++"
  98                 || ($ENV{'SERVER_NAME'} || "Untitled") . " Git";
  99
 100# html snippet to include in the <head> section of each page
 101our $site_html_head_string = "++GITWEB_SITE_HTML_HEAD_STRING++";
 102# filename of html text to include at top of each page
 103our $site_header = "++GITWEB_SITE_HEADER++";
 104# html text to include at home page
 105our $home_text = "++GITWEB_HOMETEXT++";
 106# filename of html text to include at bottom of each page
 107our $site_footer = "++GITWEB_SITE_FOOTER++";
 108
 109# URI of stylesheets
 110our @stylesheets = ("++GITWEB_CSS++");
 111# URI of a single stylesheet, which can be overridden in GITWEB_CONFIG.
 112our $stylesheet = undef;
 113# URI of GIT logo (72x27 size)
 114our $logo = "++GITWEB_LOGO++";
 115# URI of GIT favicon, assumed to be image/png type
 116our $favicon = "++GITWEB_FAVICON++";
 117# URI of gitweb.js (JavaScript code for gitweb)
 118our $javascript = "++GITWEB_JS++";
 119
 120# URI and label (title) of GIT logo link
 121#our $logo_url = "http://www.kernel.org/pub/software/scm/git/docs/";
 122#our $logo_label = "git documentation";
 123our $logo_url = "http://git-scm.com/";
 124our $logo_label = "git homepage";
 125
 126# source of projects list
 127our $projects_list = "++GITWEB_LIST++";
 128
 129# the width (in characters) of the projects list "Description" column
 130our $projects_list_description_width = 25;
 131
 132# group projects by category on the projects list
 133# (enabled if this variable evaluates to true)
 134our $projects_list_group_categories = 0;
 135
 136# default category if none specified
 137# (leave the empty string for no category)
 138our $project_list_default_category = "";
 139
 140# default order of projects list
 141# valid values are none, project, descr, owner, and age
 142our $default_projects_order = "project";
 143
 144# show repository only if this file exists
 145# (only effective if this variable evaluates to true)
 146our $export_ok = "++GITWEB_EXPORT_OK++";
 147
 148# don't generate age column on the projects list page
 149our $omit_age_column = 0;
 150
 151# don't generate information about owners of repositories
 152our $omit_owner=0;
 153
 154# show repository only if this subroutine returns true
 155# when given the path to the project, for example:
 156#    sub { return -e "$_[0]/git-daemon-export-ok"; }
 157our $export_auth_hook = undef;
 158
 159# only allow viewing of repositories also shown on the overview page
 160our $strict_export = "++GITWEB_STRICT_EXPORT++";
 161
 162# list of git base URLs used for URL to where fetch project from,
 163# i.e. full URL is "$git_base_url/$project"
 164our @git_base_url_list = grep { $_ ne '' } ("++GITWEB_BASE_URL++");
 165
 166# default blob_plain mimetype and default charset for text/plain blob
 167our $default_blob_plain_mimetype = 'text/plain';
 168our $default_text_plain_charset  = undef;
 169
 170# file to use for guessing MIME types before trying /etc/mime.types
 171# (relative to the current git repository)
 172our $mimetypes_file = undef;
 173
 174# assume this charset if line contains non-UTF-8 characters;
 175# it should be valid encoding (see Encoding::Supported(3pm) for list),
 176# for which encoding all byte sequences are valid, for example
 177# 'iso-8859-1' aka 'latin1' (it is decoded without checking, so it
 178# could be even 'utf-8' for the old behavior)
 179our $fallback_encoding = 'latin1';
 180
 181# rename detection options for git-diff and git-diff-tree
 182# - default is '-M', with the cost proportional to
 183#   (number of removed files) * (number of new files).
 184# - more costly is '-C' (which implies '-M'), with the cost proportional to
 185#   (number of changed files + number of removed files) * (number of new files)
 186# - even more costly is '-C', '--find-copies-harder' with cost
 187#   (number of files in the original tree) * (number of new files)
 188# - one might want to include '-B' option, e.g. '-B', '-M'
 189our @diff_opts = ('-M'); # taken from git_commit
 190
 191# Disables features that would allow repository owners to inject script into
 192# the gitweb domain.
 193our $prevent_xss = 0;
 194
 195# Path to the highlight executable to use (must be the one from
 196# http://www.andre-simon.de due to assumptions about parameters and output).
 197# Useful if highlight is not installed on your webserver's PATH.
 198# [Default: highlight]
 199our $highlight_bin = "++HIGHLIGHT_BIN++";
 200
 201# information about snapshot formats that gitweb is capable of serving
 202our %known_snapshot_formats = (
 203        # name => {
 204        #       'display' => display name,
 205        #       'type' => mime type,
 206        #       'suffix' => filename suffix,
 207        #       'format' => --format for git-archive,
 208        #       'compressor' => [compressor command and arguments]
 209        #                       (array reference, optional)
 210        #       'disabled' => boolean (optional)}
 211        #
 212        'tgz' => {
 213                'display' => 'tar.gz',
 214                'type' => 'application/x-gzip',
 215                'suffix' => '.tar.gz',
 216                'format' => 'tar',
 217                'compressor' => ['gzip', '-n']},
 218
 219        'tbz2' => {
 220                'display' => 'tar.bz2',
 221                'type' => 'application/x-bzip2',
 222                'suffix' => '.tar.bz2',
 223                'format' => 'tar',
 224                'compressor' => ['bzip2']},
 225
 226        'txz' => {
 227                'display' => 'tar.xz',
 228                'type' => 'application/x-xz',
 229                'suffix' => '.tar.xz',
 230                'format' => 'tar',
 231                'compressor' => ['xz'],
 232                'disabled' => 1},
 233
 234        'zip' => {
 235                'display' => 'zip',
 236                'type' => 'application/x-zip',
 237                'suffix' => '.zip',
 238                'format' => 'zip'},
 239);
 240
 241# Aliases so we understand old gitweb.snapshot values in repository
 242# configuration.
 243our %known_snapshot_format_aliases = (
 244        'gzip'  => 'tgz',
 245        'bzip2' => 'tbz2',
 246        'xz'    => 'txz',
 247
 248        # backward compatibility: legacy gitweb config support
 249        'x-gzip' => undef, 'gz' => undef,
 250        'x-bzip2' => undef, 'bz2' => undef,
 251        'x-zip' => undef, '' => undef,
 252);
 253
 254# Pixel sizes for icons and avatars. If the default font sizes or lineheights
 255# are changed, it may be appropriate to change these values too via
 256# $GITWEB_CONFIG.
 257our %avatar_size = (
 258        'default' => 16,
 259        'double'  => 32
 260);
 261
 262# Used to set the maximum load that we will still respond to gitweb queries.
 263# If server load exceed this value then return "503 server busy" error.
 264# If gitweb cannot determined server load, it is taken to be 0.
 265# Leave it undefined (or set to 'undef') to turn off load checking.
 266our $maxload = 300;
 267
 268# configuration for 'highlight' (http://www.andre-simon.de/)
 269# match by basename
 270our %highlight_basename = (
 271        #'Program' => 'py',
 272        #'Library' => 'py',
 273        'SConstruct' => 'py', # SCons equivalent of Makefile
 274        'Makefile' => 'make',
 275);
 276# match by extension
 277our %highlight_ext = (
 278        # main extensions, defining name of syntax;
 279        # see files in /usr/share/highlight/langDefs/ directory
 280        (map { $_ => $_ } qw(py rb java css js tex bib xml awk bat ini spec tcl sql)),
 281        # alternate extensions, see /etc/highlight/filetypes.conf
 282        (map { $_ => 'c'   } qw(c h)),
 283        (map { $_ => 'sh'  } qw(sh bash zsh ksh)),
 284        (map { $_ => 'cpp' } qw(cpp cxx c++ cc)),
 285        (map { $_ => 'php' } qw(php php3 php4 php5 phps)),
 286        (map { $_ => 'pl'  } qw(pl perl pm)), # perhaps also 'cgi'
 287        (map { $_ => 'make'} qw(make mak mk)),
 288        (map { $_ => 'xml' } qw(xml xhtml html htm)),
 289);
 290
 291# You define site-wide feature defaults here; override them with
 292# $GITWEB_CONFIG as necessary.
 293our %feature = (
 294        # feature => {
 295        #       'sub' => feature-sub (subroutine),
 296        #       'override' => allow-override (boolean),
 297        #       'default' => [ default options...] (array reference)}
 298        #
 299        # if feature is overridable (it means that allow-override has true value),
 300        # then feature-sub will be called with default options as parameters;
 301        # return value of feature-sub indicates if to enable specified feature
 302        #
 303        # if there is no 'sub' key (no feature-sub), then feature cannot be
 304        # overridden
 305        #
 306        # use gitweb_get_feature(<feature>) to retrieve the <feature> value
 307        # (an array) or gitweb_check_feature(<feature>) to check if <feature>
 308        # is enabled
 309
 310        # Enable the 'blame' blob view, showing the last commit that modified
 311        # each line in the file. This can be very CPU-intensive.
 312
 313        # To enable system wide have in $GITWEB_CONFIG
 314        # $feature{'blame'}{'default'} = [1];
 315        # To have project specific config enable override in $GITWEB_CONFIG
 316        # $feature{'blame'}{'override'} = 1;
 317        # and in project config gitweb.blame = 0|1;
 318        'blame' => {
 319                'sub' => sub { feature_bool('blame', @_) },
 320                'override' => 0,
 321                'default' => [0]},
 322
 323        # Enable the 'snapshot' link, providing a compressed archive of any
 324        # tree. This can potentially generate high traffic if you have large
 325        # project.
 326
 327        # Value is a list of formats defined in %known_snapshot_formats that
 328        # you wish to offer.
 329        # To disable system wide have in $GITWEB_CONFIG
 330        # $feature{'snapshot'}{'default'} = [];
 331        # To have project specific config enable override in $GITWEB_CONFIG
 332        # $feature{'snapshot'}{'override'} = 1;
 333        # and in project config, a comma-separated list of formats or "none"
 334        # to disable.  Example: gitweb.snapshot = tbz2,zip;
 335        'snapshot' => {
 336                'sub' => \&feature_snapshot,
 337                'override' => 0,
 338                'default' => ['tgz']},
 339
 340        # Enable text search, which will list the commits which match author,
 341        # committer or commit text to a given string.  Enabled by default.
 342        # Project specific override is not supported.
 343        #
 344        # Note that this controls all search features, which means that if
 345        # it is disabled, then 'grep' and 'pickaxe' search would also be
 346        # disabled.
 347        'search' => {
 348                'override' => 0,
 349                'default' => [1]},
 350
 351        # Enable grep search, which will list the files in currently selected
 352        # tree containing the given string. Enabled by default. This can be
 353        # potentially CPU-intensive, of course.
 354        # Note that you need to have 'search' feature enabled too.
 355
 356        # To enable system wide have in $GITWEB_CONFIG
 357        # $feature{'grep'}{'default'} = [1];
 358        # To have project specific config enable override in $GITWEB_CONFIG
 359        # $feature{'grep'}{'override'} = 1;
 360        # and in project config gitweb.grep = 0|1;
 361        'grep' => {
 362                'sub' => sub { feature_bool('grep', @_) },
 363                'override' => 0,
 364                'default' => [1]},
 365
 366        # Enable the pickaxe search, which will list the commits that modified
 367        # a given string in a file. This can be practical and quite faster
 368        # alternative to 'blame', but still potentially CPU-intensive.
 369        # Note that you need to have 'search' feature enabled too.
 370
 371        # To enable system wide have in $GITWEB_CONFIG
 372        # $feature{'pickaxe'}{'default'} = [1];
 373        # To have project specific config enable override in $GITWEB_CONFIG
 374        # $feature{'pickaxe'}{'override'} = 1;
 375        # and in project config gitweb.pickaxe = 0|1;
 376        'pickaxe' => {
 377                'sub' => sub { feature_bool('pickaxe', @_) },
 378                'override' => 0,
 379                'default' => [1]},
 380
 381        # Enable showing size of blobs in a 'tree' view, in a separate
 382        # column, similar to what 'ls -l' does.  This cost a bit of IO.
 383
 384        # To disable system wide have in $GITWEB_CONFIG
 385        # $feature{'show-sizes'}{'default'} = [0];
 386        # To have project specific config enable override in $GITWEB_CONFIG
 387        # $feature{'show-sizes'}{'override'} = 1;
 388        # and in project config gitweb.showsizes = 0|1;
 389        'show-sizes' => {
 390                'sub' => sub { feature_bool('showsizes', @_) },
 391                'override' => 0,
 392                'default' => [1]},
 393
 394        # Make gitweb use an alternative format of the URLs which can be
 395        # more readable and natural-looking: project name is embedded
 396        # directly in the path and the query string contains other
 397        # auxiliary information. All gitweb installations recognize
 398        # URL in either format; this configures in which formats gitweb
 399        # generates links.
 400
 401        # To enable system wide have in $GITWEB_CONFIG
 402        # $feature{'pathinfo'}{'default'} = [1];
 403        # Project specific override is not supported.
 404
 405        # Note that you will need to change the default location of CSS,
 406        # favicon, logo and possibly other files to an absolute URL. Also,
 407        # if gitweb.cgi serves as your indexfile, you will need to force
 408        # $my_uri to contain the script name in your $GITWEB_CONFIG.
 409        'pathinfo' => {
 410                'override' => 0,
 411                'default' => [0]},
 412
 413        # Make gitweb consider projects in project root subdirectories
 414        # to be forks of existing projects. Given project $projname.git,
 415        # projects matching $projname/*.git will not be shown in the main
 416        # projects list, instead a '+' mark will be added to $projname
 417        # there and a 'forks' view will be enabled for the project, listing
 418        # all the forks. If project list is taken from a file, forks have
 419        # to be listed after the main project.
 420
 421        # To enable system wide have in $GITWEB_CONFIG
 422        # $feature{'forks'}{'default'} = [1];
 423        # Project specific override is not supported.
 424        'forks' => {
 425                'override' => 0,
 426                'default' => [0]},
 427
 428        # Insert custom links to the action bar of all project pages.
 429        # This enables you mainly to link to third-party scripts integrating
 430        # into gitweb; e.g. git-browser for graphical history representation
 431        # or custom web-based repository administration interface.
 432
 433        # The 'default' value consists of a list of triplets in the form
 434        # (label, link, position) where position is the label after which
 435        # to insert the link and link is a format string where %n expands
 436        # to the project name, %f to the project path within the filesystem,
 437        # %h to the current hash (h gitweb parameter) and %b to the current
 438        # hash base (hb gitweb parameter); %% expands to %.
 439
 440        # To enable system wide have in $GITWEB_CONFIG e.g.
 441        # $feature{'actions'}{'default'} = [('graphiclog',
 442        #       '/git-browser/by-commit.html?r=%n', 'summary')];
 443        # Project specific override is not supported.
 444        'actions' => {
 445                'override' => 0,
 446                'default' => []},
 447
 448        # Allow gitweb scan project content tags of project repository,
 449        # and display the popular Web 2.0-ish "tag cloud" near the projects
 450        # list.  Note that this is something COMPLETELY different from the
 451        # normal Git tags.
 452
 453        # gitweb by itself can show existing tags, but it does not handle
 454        # tagging itself; you need to do it externally, outside gitweb.
 455        # The format is described in git_get_project_ctags() subroutine.
 456        # You may want to install the HTML::TagCloud Perl module to get
 457        # a pretty tag cloud instead of just a list of tags.
 458
 459        # To enable system wide have in $GITWEB_CONFIG
 460        # $feature{'ctags'}{'default'} = [1];
 461        # Project specific override is not supported.
 462
 463        # In the future whether ctags editing is enabled might depend
 464        # on the value, but using 1 should always mean no editing of ctags.
 465        'ctags' => {
 466                'override' => 0,
 467                'default' => [0]},
 468
 469        # The maximum number of patches in a patchset generated in patch
 470        # view. Set this to 0 or undef to disable patch view, or to a
 471        # negative number to remove any limit.
 472
 473        # To disable system wide have in $GITWEB_CONFIG
 474        # $feature{'patches'}{'default'} = [0];
 475        # To have project specific config enable override in $GITWEB_CONFIG
 476        # $feature{'patches'}{'override'} = 1;
 477        # and in project config gitweb.patches = 0|n;
 478        # where n is the maximum number of patches allowed in a patchset.
 479        'patches' => {
 480                'sub' => \&feature_patches,
 481                'override' => 0,
 482                'default' => [16]},
 483
 484        # Avatar support. When this feature is enabled, views such as
 485        # shortlog or commit will display an avatar associated with
 486        # the email of the committer(s) and/or author(s).
 487
 488        # Currently available providers are gravatar and picon.
 489        # If an unknown provider is specified, the feature is disabled.
 490
 491        # Gravatar depends on Digest::MD5.
 492        # Picon currently relies on the indiana.edu database.
 493
 494        # To enable system wide have in $GITWEB_CONFIG
 495        # $feature{'avatar'}{'default'} = ['<provider>'];
 496        # where <provider> is either gravatar or picon.
 497        # To have project specific config enable override in $GITWEB_CONFIG
 498        # $feature{'avatar'}{'override'} = 1;
 499        # and in project config gitweb.avatar = <provider>;
 500        'avatar' => {
 501                'sub' => \&feature_avatar,
 502                'override' => 0,
 503                'default' => ['']},
 504
 505        # Enable displaying how much time and how many git commands
 506        # it took to generate and display page.  Disabled by default.
 507        # Project specific override is not supported.
 508        'timed' => {
 509                'override' => 0,
 510                'default' => [0]},
 511
 512        # Enable turning some links into links to actions which require
 513        # JavaScript to run (like 'blame_incremental').  Not enabled by
 514        # default.  Project specific override is currently not supported.
 515        'javascript-actions' => {
 516                'override' => 0,
 517                'default' => [0]},
 518
 519        # Enable and configure ability to change common timezone for dates
 520        # in gitweb output via JavaScript.  Enabled by default.
 521        # Project specific override is not supported.
 522        'javascript-timezone' => {
 523                'override' => 0,
 524                'default' => [
 525                        'local',     # default timezone: 'utc', 'local', or '(-|+)HHMM' format,
 526                                     # or undef to turn off this feature
 527                        'gitweb_tz', # name of cookie where to store selected timezone
 528                        'datetime',  # CSS class used to mark up dates for manipulation
 529                ]},
 530
 531        # Syntax highlighting support. This is based on Daniel Svensson's
 532        # and Sham Chukoury's work in gitweb-xmms2.git.
 533        # It requires the 'highlight' program present in $PATH,
 534        # and therefore is disabled by default.
 535
 536        # To enable system wide have in $GITWEB_CONFIG
 537        # $feature{'highlight'}{'default'} = [1];
 538
 539        'highlight' => {
 540                'sub' => sub { feature_bool('highlight', @_) },
 541                'override' => 0,
 542                'default' => [0]},
 543
 544        # Enable displaying of remote heads in the heads list
 545
 546        # To enable system wide have in $GITWEB_CONFIG
 547        # $feature{'remote_heads'}{'default'} = [1];
 548        # To have project specific config enable override in $GITWEB_CONFIG
 549        # $feature{'remote_heads'}{'override'} = 1;
 550        # and in project config gitweb.remoteheads = 0|1;
 551        'remote_heads' => {
 552                'sub' => sub { feature_bool('remote_heads', @_) },
 553                'override' => 0,
 554                'default' => [0]},
 555
 556        # Enable showing branches under other refs in addition to heads
 557
 558        # To set system wide extra branch refs have in $GITWEB_CONFIG
 559        # $feature{'extra-branch-refs'}{'default'} = ['dirs', 'of', 'choice'];
 560        # To have project specific config enable override in $GITWEB_CONFIG
 561        # $feature{'extra-branch-refs'}{'override'} = 1;
 562        # and in project config gitweb.extrabranchrefs = dirs of choice
 563        # Every directory is separated with whitespace.
 564
 565        'extra-branch-refs' => {
 566                'sub' => \&feature_extra_branch_refs,
 567                'override' => 0,
 568                'default' => []},
 569);
 570
 571sub gitweb_get_feature {
 572        my ($name) = @_;
 573        return unless exists $feature{$name};
 574        my ($sub, $override, @defaults) = (
 575                $feature{$name}{'sub'},
 576                $feature{$name}{'override'},
 577                @{$feature{$name}{'default'}});
 578        # project specific override is possible only if we have project
 579        our $git_dir; # global variable, declared later
 580        if (!$override || !defined $git_dir) {
 581                return @defaults;
 582        }
 583        if (!defined $sub) {
 584                warn "feature $name is not overridable";
 585                return @defaults;
 586        }
 587        return $sub->(@defaults);
 588}
 589
 590# A wrapper to check if a given feature is enabled.
 591# With this, you can say
 592#
 593#   my $bool_feat = gitweb_check_feature('bool_feat');
 594#   gitweb_check_feature('bool_feat') or somecode;
 595#
 596# instead of
 597#
 598#   my ($bool_feat) = gitweb_get_feature('bool_feat');
 599#   (gitweb_get_feature('bool_feat'))[0] or somecode;
 600#
 601sub gitweb_check_feature {
 602        return (gitweb_get_feature(@_))[0];
 603}
 604
 605
 606sub feature_bool {
 607        my $key = shift;
 608        my ($val) = git_get_project_config($key, '--bool');
 609
 610        if (!defined $val) {
 611                return ($_[0]);
 612        } elsif ($val eq 'true') {
 613                return (1);
 614        } elsif ($val eq 'false') {
 615                return (0);
 616        }
 617}
 618
 619sub feature_snapshot {
 620        my (@fmts) = @_;
 621
 622        my ($val) = git_get_project_config('snapshot');
 623
 624        if ($val) {
 625                @fmts = ($val eq 'none' ? () : split /\s*[,\s]\s*/, $val);
 626        }
 627
 628        return @fmts;
 629}
 630
 631sub feature_patches {
 632        my @val = (git_get_project_config('patches', '--int'));
 633
 634        if (@val) {
 635                return @val;
 636        }
 637
 638        return ($_[0]);
 639}
 640
 641sub feature_avatar {
 642        my @val = (git_get_project_config('avatar'));
 643
 644        return @val ? @val : @_;
 645}
 646
 647sub feature_extra_branch_refs {
 648        my (@branch_refs) = @_;
 649        my $values = git_get_project_config('extrabranchrefs');
 650
 651        if ($values) {
 652                $values = config_to_multi ($values);
 653                @branch_refs = ();
 654                foreach my $value (@{$values}) {
 655                        push @branch_refs, split /\s+/, $value;
 656                }
 657        }
 658
 659        return @branch_refs;
 660}
 661
 662# checking HEAD file with -e is fragile if the repository was
 663# initialized long time ago (i.e. symlink HEAD) and was pack-ref'ed
 664# and then pruned.
 665sub check_head_link {
 666        my ($dir) = @_;
 667        my $headfile = "$dir/HEAD";
 668        return ((-e $headfile) ||
 669                (-l $headfile && readlink($headfile) =~ /^refs\/heads\//));
 670}
 671
 672sub check_export_ok {
 673        my ($dir) = @_;
 674        return (check_head_link($dir) &&
 675                (!$export_ok || -e "$dir/$export_ok") &&
 676                (!$export_auth_hook || $export_auth_hook->($dir)));
 677}
 678
 679# process alternate names for backward compatibility
 680# filter out unsupported (unknown) snapshot formats
 681sub filter_snapshot_fmts {
 682        my @fmts = @_;
 683
 684        @fmts = map {
 685                exists $known_snapshot_format_aliases{$_} ?
 686                       $known_snapshot_format_aliases{$_} : $_} @fmts;
 687        @fmts = grep {
 688                exists $known_snapshot_formats{$_} &&
 689                !$known_snapshot_formats{$_}{'disabled'}} @fmts;
 690}
 691
 692sub filter_and_validate_refs {
 693        my @refs = @_;
 694        my %unique_refs = ();
 695
 696        foreach my $ref (@refs) {
 697                die_error(500, "Invalid ref '$ref' in 'extra-branch-refs' feature") unless (is_valid_ref_format($ref));
 698                # 'heads' are added implicitly in get_branch_refs().
 699                $unique_refs{$ref} = 1 if ($ref ne 'heads');
 700        }
 701        return sort keys %unique_refs;
 702}
 703
 704# If it is set to code reference, it is code that it is to be run once per
 705# request, allowing updating configurations that change with each request,
 706# while running other code in config file only once.
 707#
 708# Otherwise, if it is false then gitweb would process config file only once;
 709# if it is true then gitweb config would be run for each request.
 710our $per_request_config = 1;
 711
 712# read and parse gitweb config file given by its parameter.
 713# returns true on success, false on recoverable error, allowing
 714# to chain this subroutine, using first file that exists.
 715# dies on errors during parsing config file, as it is unrecoverable.
 716sub read_config_file {
 717        my $filename = shift;
 718        return unless defined $filename;
 719        # die if there are errors parsing config file
 720        if (-e $filename) {
 721                do $filename;
 722                die $@ if $@;
 723                return 1;
 724        }
 725        return;
 726}
 727
 728our ($GITWEB_CONFIG, $GITWEB_CONFIG_SYSTEM, $GITWEB_CONFIG_COMMON);
 729sub evaluate_gitweb_config {
 730        our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 731        our $GITWEB_CONFIG_SYSTEM = $ENV{'GITWEB_CONFIG_SYSTEM'} || "++GITWEB_CONFIG_SYSTEM++";
 732        our $GITWEB_CONFIG_COMMON = $ENV{'GITWEB_CONFIG_COMMON'} || "++GITWEB_CONFIG_COMMON++";
 733
 734        # Protect against duplications of file names, to not read config twice.
 735        # Only one of $GITWEB_CONFIG and $GITWEB_CONFIG_SYSTEM is used, so
 736        # there possibility of duplication of filename there doesn't matter.
 737        $GITWEB_CONFIG = ""        if ($GITWEB_CONFIG eq $GITWEB_CONFIG_COMMON);
 738        $GITWEB_CONFIG_SYSTEM = "" if ($GITWEB_CONFIG_SYSTEM eq $GITWEB_CONFIG_COMMON);
 739
 740        # Common system-wide settings for convenience.
 741        # Those settings can be ovverriden by GITWEB_CONFIG or GITWEB_CONFIG_SYSTEM.
 742        read_config_file($GITWEB_CONFIG_COMMON);
 743
 744        # Use first config file that exists.  This means use the per-instance
 745        # GITWEB_CONFIG if exists, otherwise use GITWEB_SYSTEM_CONFIG.
 746        read_config_file($GITWEB_CONFIG) and return;
 747        read_config_file($GITWEB_CONFIG_SYSTEM);
 748}
 749
 750# Get loadavg of system, to compare against $maxload.
 751# Currently it requires '/proc/loadavg' present to get loadavg;
 752# if it is not present it returns 0, which means no load checking.
 753sub get_loadavg {
 754        if( -e '/proc/loadavg' ){
 755                open my $fd, '<', '/proc/loadavg'
 756                        or return 0;
 757                my @load = split(/\s+/, scalar <$fd>);
 758                close $fd;
 759
 760                # The first three columns measure CPU and IO utilization of the last one,
 761                # five, and 10 minute periods.  The fourth column shows the number of
 762                # currently running processes and the total number of processes in the m/n
 763                # format.  The last column displays the last process ID used.
 764                return $load[0] || 0;
 765        }
 766        # additional checks for load average should go here for things that don't export
 767        # /proc/loadavg
 768
 769        return 0;
 770}
 771
 772# version of the core git binary
 773our $git_version;
 774sub evaluate_git_version {
 775        our $git_version = qx("$GIT" --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 776        $number_of_git_cmds++;
 777}
 778
 779sub check_loadavg {
 780        if (defined $maxload && get_loadavg() > $maxload) {
 781                die_error(503, "The load average on the server is too high");
 782        }
 783}
 784
 785# ======================================================================
 786# input validation and dispatch
 787
 788# input parameters can be collected from a variety of sources (presently, CGI
 789# and PATH_INFO), so we define an %input_params hash that collects them all
 790# together during validation: this allows subsequent uses (e.g. href()) to be
 791# agnostic of the parameter origin
 792
 793our %input_params = ();
 794
 795# input parameters are stored with the long parameter name as key. This will
 796# also be used in the href subroutine to convert parameters to their CGI
 797# equivalent, and since the href() usage is the most frequent one, we store
 798# the name -> CGI key mapping here, instead of the reverse.
 799#
 800# XXX: Warning: If you touch this, check the search form for updating,
 801# too.
 802
 803our @cgi_param_mapping = (
 804        project => "p",
 805        action => "a",
 806        file_name => "f",
 807        file_parent => "fp",
 808        hash => "h",
 809        hash_parent => "hp",
 810        hash_base => "hb",
 811        hash_parent_base => "hpb",
 812        page => "pg",
 813        order => "o",
 814        searchtext => "s",
 815        searchtype => "st",
 816        snapshot_format => "sf",
 817        extra_options => "opt",
 818        search_use_regexp => "sr",
 819        ctag => "by_tag",
 820        diff_style => "ds",
 821        project_filter => "pf",
 822        # this must be last entry (for manipulation from JavaScript)
 823        javascript => "js"
 824);
 825our %cgi_param_mapping = @cgi_param_mapping;
 826
 827# we will also need to know the possible actions, for validation
 828our %actions = (
 829        "blame" => \&git_blame,
 830        "blame_incremental" => \&git_blame_incremental,
 831        "blame_data" => \&git_blame_data,
 832        "blobdiff" => \&git_blobdiff,
 833        "blobdiff_plain" => \&git_blobdiff_plain,
 834        "blob" => \&git_blob,
 835        "blob_plain" => \&git_blob_plain,
 836        "commitdiff" => \&git_commitdiff,
 837        "commitdiff_plain" => \&git_commitdiff_plain,
 838        "commit" => \&git_commit,
 839        "forks" => \&git_forks,
 840        "heads" => \&git_heads,
 841        "history" => \&git_history,
 842        "log" => \&git_log,
 843        "patch" => \&git_patch,
 844        "patches" => \&git_patches,
 845        "remotes" => \&git_remotes,
 846        "rss" => \&git_rss,
 847        "atom" => \&git_atom,
 848        "search" => \&git_search,
 849        "search_help" => \&git_search_help,
 850        "shortlog" => \&git_shortlog,
 851        "summary" => \&git_summary,
 852        "tag" => \&git_tag,
 853        "tags" => \&git_tags,
 854        "tree" => \&git_tree,
 855        "snapshot" => \&git_snapshot,
 856        "object" => \&git_object,
 857        # those below don't need $project
 858        "opml" => \&git_opml,
 859        "project_list" => \&git_project_list,
 860        "project_index" => \&git_project_index,
 861);
 862
 863# finally, we have the hash of allowed extra_options for the commands that
 864# allow them
 865our %allowed_options = (
 866        "--no-merges" => [ qw(rss atom log shortlog history) ],
 867);
 868
 869# fill %input_params with the CGI parameters. All values except for 'opt'
 870# should be single values, but opt can be an array. We should probably
 871# build an array of parameters that can be multi-valued, but since for the time
 872# being it's only this one, we just single it out
 873sub evaluate_query_params {
 874        our $cgi;
 875
 876        while (my ($name, $symbol) = each %cgi_param_mapping) {
 877                if ($symbol eq 'opt') {
 878                        $input_params{$name} = [ map { decode_utf8($_) } $cgi->multi_param($symbol) ];
 879                } else {
 880                        $input_params{$name} = decode_utf8($cgi->param($symbol));
 881                }
 882        }
 883}
 884
 885# now read PATH_INFO and update the parameter list for missing parameters
 886sub evaluate_path_info {
 887        return if defined $input_params{'project'};
 888        return if !$path_info;
 889        $path_info =~ s,^/+,,;
 890        return if !$path_info;
 891
 892        # find which part of PATH_INFO is project
 893        my $project = $path_info;
 894        $project =~ s,/+$,,;
 895        while ($project && !check_head_link("$projectroot/$project")) {
 896                $project =~ s,/*[^/]*$,,;
 897        }
 898        return unless $project;
 899        $input_params{'project'} = $project;
 900
 901        # do not change any parameters if an action is given using the query string
 902        return if $input_params{'action'};
 903        $path_info =~ s,^\Q$project\E/*,,;
 904
 905        # next, check if we have an action
 906        my $action = $path_info;
 907        $action =~ s,/.*$,,;
 908        if (exists $actions{$action}) {
 909                $path_info =~ s,^$action/*,,;
 910                $input_params{'action'} = $action;
 911        }
 912
 913        # list of actions that want hash_base instead of hash, but can have no
 914        # pathname (f) parameter
 915        my @wants_base = (
 916                'tree',
 917                'history',
 918        );
 919
 920        # we want to catch, among others
 921        # [$hash_parent_base[:$file_parent]..]$hash_parent[:$file_name]
 922        my ($parentrefname, $parentpathname, $refname, $pathname) =
 923                ($path_info =~ /^(?:(.+?)(?::(.+))?\.\.)?([^:]+?)?(?::(.+))?$/);
 924
 925        # first, analyze the 'current' part
 926        if (defined $pathname) {
 927                # we got "branch:filename" or "branch:dir/"
 928                # we could use git_get_type(branch:pathname), but:
 929                # - it needs $git_dir
 930                # - it does a git() call
 931                # - the convention of terminating directories with a slash
 932                #   makes it superfluous
 933                # - embedding the action in the PATH_INFO would make it even
 934                #   more superfluous
 935                $pathname =~ s,^/+,,;
 936                if (!$pathname || substr($pathname, -1) eq "/") {
 937                        $input_params{'action'} ||= "tree";
 938                        $pathname =~ s,/$,,;
 939                } else {
 940                        # the default action depends on whether we had parent info
 941                        # or not
 942                        if ($parentrefname) {
 943                                $input_params{'action'} ||= "blobdiff_plain";
 944                        } else {
 945                                $input_params{'action'} ||= "blob_plain";
 946                        }
 947                }
 948                $input_params{'hash_base'} ||= $refname;
 949                $input_params{'file_name'} ||= $pathname;
 950        } elsif (defined $refname) {
 951                # we got "branch". In this case we have to choose if we have to
 952                # set hash or hash_base.
 953                #
 954                # Most of the actions without a pathname only want hash to be
 955                # set, except for the ones specified in @wants_base that want
 956                # hash_base instead. It should also be noted that hand-crafted
 957                # links having 'history' as an action and no pathname or hash
 958                # set will fail, but that happens regardless of PATH_INFO.
 959                if (defined $parentrefname) {
 960                        # if there is parent let the default be 'shortlog' action
 961                        # (for http://git.example.com/repo.git/A..B links); if there
 962                        # is no parent, dispatch will detect type of object and set
 963                        # action appropriately if required (if action is not set)
 964                        $input_params{'action'} ||= "shortlog";
 965                }
 966                if ($input_params{'action'} &&
 967                    grep { $_ eq $input_params{'action'} } @wants_base) {
 968                        $input_params{'hash_base'} ||= $refname;
 969                } else {
 970                        $input_params{'hash'} ||= $refname;
 971                }
 972        }
 973
 974        # next, handle the 'parent' part, if present
 975        if (defined $parentrefname) {
 976                # a missing pathspec defaults to the 'current' filename, allowing e.g.
 977                # someproject/blobdiff/oldrev..newrev:/filename
 978                if ($parentpathname) {
 979                        $parentpathname =~ s,^/+,,;
 980                        $parentpathname =~ s,/$,,;
 981                        $input_params{'file_parent'} ||= $parentpathname;
 982                } else {
 983                        $input_params{'file_parent'} ||= $input_params{'file_name'};
 984                }
 985                # we assume that hash_parent_base is wanted if a path was specified,
 986                # or if the action wants hash_base instead of hash
 987                if (defined $input_params{'file_parent'} ||
 988                        grep { $_ eq $input_params{'action'} } @wants_base) {
 989                        $input_params{'hash_parent_base'} ||= $parentrefname;
 990                } else {
 991                        $input_params{'hash_parent'} ||= $parentrefname;
 992                }
 993        }
 994
 995        # for the snapshot action, we allow URLs in the form
 996        # $project/snapshot/$hash.ext
 997        # where .ext determines the snapshot and gets removed from the
 998        # passed $refname to provide the $hash.
 999        #
1000        # To be able to tell that $refname includes the format extension, we
1001        # require the following two conditions to be satisfied:
1002        # - the hash input parameter MUST have been set from the $refname part
1003        #   of the URL (i.e. they must be equal)
1004        # - the snapshot format MUST NOT have been defined already (e.g. from
1005        #   CGI parameter sf)
1006        # It's also useless to try any matching unless $refname has a dot,
1007        # so we check for that too
1008        if (defined $input_params{'action'} &&
1009                $input_params{'action'} eq 'snapshot' &&
1010                defined $refname && index($refname, '.') != -1 &&
1011                $refname eq $input_params{'hash'} &&
1012                !defined $input_params{'snapshot_format'}) {
1013                # We loop over the known snapshot formats, checking for
1014                # extensions. Allowed extensions are both the defined suffix
1015                # (which includes the initial dot already) and the snapshot
1016                # format key itself, with a prepended dot
1017                while (my ($fmt, $opt) = each %known_snapshot_formats) {
1018                        my $hash = $refname;
1019                        unless ($hash =~ s/(\Q$opt->{'suffix'}\E|\Q.$fmt\E)$//) {
1020                                next;
1021                        }
1022                        my $sfx = $1;
1023                        # a valid suffix was found, so set the snapshot format
1024                        # and reset the hash parameter
1025                        $input_params{'snapshot_format'} = $fmt;
1026                        $input_params{'hash'} = $hash;
1027                        # we also set the format suffix to the one requested
1028                        # in the URL: this way a request for e.g. .tgz returns
1029                        # a .tgz instead of a .tar.gz
1030                        $known_snapshot_formats{$fmt}{'suffix'} = $sfx;
1031                        last;
1032                }
1033        }
1034}
1035
1036our ($action, $project, $file_name, $file_parent, $hash, $hash_parent, $hash_base,
1037     $hash_parent_base, @extra_options, $page, $searchtype, $search_use_regexp,
1038     $searchtext, $search_regexp, $project_filter);
1039sub evaluate_and_validate_params {
1040        our $action = $input_params{'action'};
1041        if (defined $action) {
1042                if (!is_valid_action($action)) {
1043                        die_error(400, "Invalid action parameter");
1044                }
1045        }
1046
1047        # parameters which are pathnames
1048        our $project = $input_params{'project'};
1049        if (defined $project) {
1050                if (!is_valid_project($project)) {
1051                        undef $project;
1052                        die_error(404, "No such project");
1053                }
1054        }
1055
1056        our $project_filter = $input_params{'project_filter'};
1057        if (defined $project_filter) {
1058                if (!is_valid_pathname($project_filter)) {
1059                        die_error(404, "Invalid project_filter parameter");
1060                }
1061        }
1062
1063        our $file_name = $input_params{'file_name'};
1064        if (defined $file_name) {
1065                if (!is_valid_pathname($file_name)) {
1066                        die_error(400, "Invalid file parameter");
1067                }
1068        }
1069
1070        our $file_parent = $input_params{'file_parent'};
1071        if (defined $file_parent) {
1072                if (!is_valid_pathname($file_parent)) {
1073                        die_error(400, "Invalid file parent parameter");
1074                }
1075        }
1076
1077        # parameters which are refnames
1078        our $hash = $input_params{'hash'};
1079        if (defined $hash) {
1080                if (!is_valid_refname($hash)) {
1081                        die_error(400, "Invalid hash parameter");
1082                }
1083        }
1084
1085        our $hash_parent = $input_params{'hash_parent'};
1086        if (defined $hash_parent) {
1087                if (!is_valid_refname($hash_parent)) {
1088                        die_error(400, "Invalid hash parent parameter");
1089                }
1090        }
1091
1092        our $hash_base = $input_params{'hash_base'};
1093        if (defined $hash_base) {
1094                if (!is_valid_refname($hash_base)) {
1095                        die_error(400, "Invalid hash base parameter");
1096                }
1097        }
1098
1099        our @extra_options = @{$input_params{'extra_options'}};
1100        # @extra_options is always defined, since it can only be (currently) set from
1101        # CGI, and $cgi->param() returns the empty array in array context if the param
1102        # is not set
1103        foreach my $opt (@extra_options) {
1104                if (not exists $allowed_options{$opt}) {
1105                        die_error(400, "Invalid option parameter");
1106                }
1107                if (not grep(/^$action$/, @{$allowed_options{$opt}})) {
1108                        die_error(400, "Invalid option parameter for this action");
1109                }
1110        }
1111
1112        our $hash_parent_base = $input_params{'hash_parent_base'};
1113        if (defined $hash_parent_base) {
1114                if (!is_valid_refname($hash_parent_base)) {
1115                        die_error(400, "Invalid hash parent base parameter");
1116                }
1117        }
1118
1119        # other parameters
1120        our $page = $input_params{'page'};
1121        if (defined $page) {
1122                if ($page =~ m/[^0-9]/) {
1123                        die_error(400, "Invalid page parameter");
1124                }
1125        }
1126
1127        our $searchtype = $input_params{'searchtype'};
1128        if (defined $searchtype) {
1129                if ($searchtype =~ m/[^a-z]/) {
1130                        die_error(400, "Invalid searchtype parameter");
1131                }
1132        }
1133
1134        our $search_use_regexp = $input_params{'search_use_regexp'};
1135
1136        our $searchtext = $input_params{'searchtext'};
1137        our $search_regexp = undef;
1138        if (defined $searchtext) {
1139                if (length($searchtext) < 2) {
1140                        die_error(403, "At least two characters are required for search parameter");
1141                }
1142                if ($search_use_regexp) {
1143                        $search_regexp = $searchtext;
1144                        if (!eval { qr/$search_regexp/; 1; }) {
1145                                (my $error = $@) =~ s/ at \S+ line \d+.*\n?//;
1146                                die_error(400, "Invalid search regexp '$search_regexp'",
1147                                          esc_html($error));
1148                        }
1149                } else {
1150                        $search_regexp = quotemeta $searchtext;
1151                }
1152        }
1153}
1154
1155# path to the current git repository
1156our $git_dir;
1157sub evaluate_git_dir {
1158        our $git_dir = "$projectroot/$project" if $project;
1159}
1160
1161our (@snapshot_fmts, $git_avatar, @extra_branch_refs);
1162sub configure_gitweb_features {
1163        # list of supported snapshot formats
1164        our @snapshot_fmts = gitweb_get_feature('snapshot');
1165        @snapshot_fmts = filter_snapshot_fmts(@snapshot_fmts);
1166
1167        # check that the avatar feature is set to a known provider name,
1168        # and for each provider check if the dependencies are satisfied.
1169        # if the provider name is invalid or the dependencies are not met,
1170        # reset $git_avatar to the empty string.
1171        our ($git_avatar) = gitweb_get_feature('avatar');
1172        if ($git_avatar eq 'gravatar') {
1173                $git_avatar = '' unless (eval { require Digest::MD5; 1; });
1174        } elsif ($git_avatar eq 'picon') {
1175                # no dependencies
1176        } else {
1177                $git_avatar = '';
1178        }
1179
1180        our @extra_branch_refs = gitweb_get_feature('extra-branch-refs');
1181        @extra_branch_refs = filter_and_validate_refs (@extra_branch_refs);
1182}
1183
1184sub get_branch_refs {
1185        return ('heads', @extra_branch_refs);
1186}
1187
1188# custom error handler: 'die <message>' is Internal Server Error
1189sub handle_errors_html {
1190        my $msg = shift; # it is already HTML escaped
1191
1192        # to avoid infinite loop where error occurs in die_error,
1193        # change handler to default handler, disabling handle_errors_html
1194        set_message("Error occurred when inside die_error:\n$msg");
1195
1196        # you cannot jump out of die_error when called as error handler;
1197        # the subroutine set via CGI::Carp::set_message is called _after_
1198        # HTTP headers are already written, so it cannot write them itself
1199        die_error(undef, undef, $msg, -error_handler => 1, -no_http_header => 1);
1200}
1201set_message(\&handle_errors_html);
1202
1203# dispatch
1204sub dispatch {
1205        if (!defined $action) {
1206                if (defined $hash) {
1207                        $action = git_get_type($hash);
1208                        $action or die_error(404, "Object does not exist");
1209                } elsif (defined $hash_base && defined $file_name) {
1210                        $action = git_get_type("$hash_base:$file_name");
1211                        $action or die_error(404, "File or directory does not exist");
1212                } elsif (defined $project) {
1213                        $action = 'summary';
1214                } else {
1215                        $action = 'project_list';
1216                }
1217        }
1218        if (!defined($actions{$action})) {
1219                die_error(400, "Unknown action");
1220        }
1221        if ($action !~ m/^(?:opml|project_list|project_index)$/ &&
1222            !$project) {
1223                die_error(400, "Project needed");
1224        }
1225        $actions{$action}->();
1226}
1227
1228sub reset_timer {
1229        our $t0 = [ gettimeofday() ]
1230                if defined $t0;
1231        our $number_of_git_cmds = 0;
1232}
1233
1234our $first_request = 1;
1235sub run_request {
1236        reset_timer();
1237
1238        evaluate_uri();
1239        if ($first_request) {
1240                evaluate_gitweb_config();
1241                evaluate_git_version();
1242        }
1243        if ($per_request_config) {
1244                if (ref($per_request_config) eq 'CODE') {
1245                        $per_request_config->();
1246                } elsif (!$first_request) {
1247                        evaluate_gitweb_config();
1248                }
1249        }
1250        check_loadavg();
1251
1252        # $projectroot and $projects_list might be set in gitweb config file
1253        $projects_list ||= $projectroot;
1254
1255        evaluate_query_params();
1256        evaluate_path_info();
1257        evaluate_and_validate_params();
1258        evaluate_git_dir();
1259
1260        configure_gitweb_features();
1261
1262        dispatch();
1263}
1264
1265our $is_last_request = sub { 1 };
1266our ($pre_dispatch_hook, $post_dispatch_hook, $pre_listen_hook);
1267our $CGI = 'CGI';
1268our $cgi;
1269sub configure_as_fcgi {
1270        require CGI::Fast;
1271        our $CGI = 'CGI::Fast';
1272
1273        my $request_number = 0;
1274        # let each child service 100 requests
1275        our $is_last_request = sub { ++$request_number > 100 };
1276}
1277sub evaluate_argv {
1278        my $script_name = $ENV{'SCRIPT_NAME'} || $ENV{'SCRIPT_FILENAME'} || __FILE__;
1279        configure_as_fcgi()
1280                if $script_name =~ /\.fcgi$/;
1281
1282        return unless (@ARGV);
1283
1284        require Getopt::Long;
1285        Getopt::Long::GetOptions(
1286                'fastcgi|fcgi|f' => \&configure_as_fcgi,
1287                'nproc|n=i' => sub {
1288                        my ($arg, $val) = @_;
1289                        return unless eval { require FCGI::ProcManager; 1; };
1290                        my $proc_manager = FCGI::ProcManager->new({
1291                                n_processes => $val,
1292                        });
1293                        our $pre_listen_hook    = sub { $proc_manager->pm_manage()        };
1294                        our $pre_dispatch_hook  = sub { $proc_manager->pm_pre_dispatch()  };
1295                        our $post_dispatch_hook = sub { $proc_manager->pm_post_dispatch() };
1296                },
1297        );
1298}
1299
1300sub run {
1301        evaluate_argv();
1302
1303        $first_request = 1;
1304        $pre_listen_hook->()
1305                if $pre_listen_hook;
1306
1307 REQUEST:
1308        while ($cgi = $CGI->new()) {
1309                $pre_dispatch_hook->()
1310                        if $pre_dispatch_hook;
1311
1312                run_request();
1313
1314                $post_dispatch_hook->()
1315                        if $post_dispatch_hook;
1316                $first_request = 0;
1317
1318                last REQUEST if ($is_last_request->());
1319        }
1320
1321 DONE_GITWEB:
1322        1;
1323}
1324
1325run();
1326
1327if (defined caller) {
1328        # wrapped in a subroutine processing requests,
1329        # e.g. mod_perl with ModPerl::Registry, or PSGI with Plack::App::WrapCGI
1330        return;
1331} else {
1332        # pure CGI script, serving single request
1333        exit;
1334}
1335
1336## ======================================================================
1337## action links
1338
1339# possible values of extra options
1340# -full => 0|1      - use absolute/full URL ($my_uri/$my_url as base)
1341# -replay => 1      - start from a current view (replay with modifications)
1342# -path_info => 0|1 - don't use/use path_info URL (if possible)
1343# -anchor => ANCHOR - add #ANCHOR to end of URL, implies -replay if used alone
1344sub href {
1345        my %params = @_;
1346        # default is to use -absolute url() i.e. $my_uri
1347        my $href = $params{-full} ? $my_url : $my_uri;
1348
1349        # implicit -replay, must be first of implicit params
1350        $params{-replay} = 1 if (keys %params == 1 && $params{-anchor});
1351
1352        $params{'project'} = $project unless exists $params{'project'};
1353
1354        if ($params{-replay}) {
1355                while (my ($name, $symbol) = each %cgi_param_mapping) {
1356                        if (!exists $params{$name}) {
1357                                $params{$name} = $input_params{$name};
1358                        }
1359                }
1360        }
1361
1362        my $use_pathinfo = gitweb_check_feature('pathinfo');
1363        if (defined $params{'project'} &&
1364            (exists $params{-path_info} ? $params{-path_info} : $use_pathinfo)) {
1365                # try to put as many parameters as possible in PATH_INFO:
1366                #   - project name
1367                #   - action
1368                #   - hash_parent or hash_parent_base:/file_parent
1369                #   - hash or hash_base:/filename
1370                #   - the snapshot_format as an appropriate suffix
1371
1372                # When the script is the root DirectoryIndex for the domain,
1373                # $href here would be something like http://gitweb.example.com/
1374                # Thus, we strip any trailing / from $href, to spare us double
1375                # slashes in the final URL
1376                $href =~ s,/$,,;
1377
1378                # Then add the project name, if present
1379                $href .= "/".esc_path_info($params{'project'});
1380                delete $params{'project'};
1381
1382                # since we destructively absorb parameters, we keep this
1383                # boolean that remembers if we're handling a snapshot
1384                my $is_snapshot = $params{'action'} eq 'snapshot';
1385
1386                # Summary just uses the project path URL, any other action is
1387                # added to the URL
1388                if (defined $params{'action'}) {
1389                        $href .= "/".esc_path_info($params{'action'})
1390                                unless $params{'action'} eq 'summary';
1391                        delete $params{'action'};
1392                }
1393
1394                # Next, we put hash_parent_base:/file_parent..hash_base:/file_name,
1395                # stripping nonexistent or useless pieces
1396                $href .= "/" if ($params{'hash_base'} || $params{'hash_parent_base'}
1397                        || $params{'hash_parent'} || $params{'hash'});
1398                if (defined $params{'hash_base'}) {
1399                        if (defined $params{'hash_parent_base'}) {
1400                                $href .= esc_path_info($params{'hash_parent_base'});
1401                                # skip the file_parent if it's the same as the file_name
1402                                if (defined $params{'file_parent'}) {
1403                                        if (defined $params{'file_name'} && $params{'file_parent'} eq $params{'file_name'}) {
1404                                                delete $params{'file_parent'};
1405                                        } elsif ($params{'file_parent'} !~ /\.\./) {
1406                                                $href .= ":/".esc_path_info($params{'file_parent'});
1407                                                delete $params{'file_parent'};
1408                                        }
1409                                }
1410                                $href .= "..";
1411                                delete $params{'hash_parent'};
1412                                delete $params{'hash_parent_base'};
1413                        } elsif (defined $params{'hash_parent'}) {
1414                                $href .= esc_path_info($params{'hash_parent'}). "..";
1415                                delete $params{'hash_parent'};
1416                        }
1417
1418                        $href .= esc_path_info($params{'hash_base'});
1419                        if (defined $params{'file_name'} && $params{'file_name'} !~ /\.\./) {
1420                                $href .= ":/".esc_path_info($params{'file_name'});
1421                                delete $params{'file_name'};
1422                        }
1423                        delete $params{'hash'};
1424                        delete $params{'hash_base'};
1425                } elsif (defined $params{'hash'}) {
1426                        $href .= esc_path_info($params{'hash'});
1427                        delete $params{'hash'};
1428                }
1429
1430                # If the action was a snapshot, we can absorb the
1431                # snapshot_format parameter too
1432                if ($is_snapshot) {
1433                        my $fmt = $params{'snapshot_format'};
1434                        # snapshot_format should always be defined when href()
1435                        # is called, but just in case some code forgets, we
1436                        # fall back to the default
1437                        $fmt ||= $snapshot_fmts[0];
1438                        $href .= $known_snapshot_formats{$fmt}{'suffix'};
1439                        delete $params{'snapshot_format'};
1440                }
1441        }
1442
1443        # now encode the parameters explicitly
1444        my @result = ();
1445        for (my $i = 0; $i < @cgi_param_mapping; $i += 2) {
1446                my ($name, $symbol) = ($cgi_param_mapping[$i], $cgi_param_mapping[$i+1]);
1447                if (defined $params{$name}) {
1448                        if (ref($params{$name}) eq "ARRAY") {
1449                                foreach my $par (@{$params{$name}}) {
1450                                        push @result, $symbol . "=" . esc_param($par);
1451                                }
1452                        } else {
1453                                push @result, $symbol . "=" . esc_param($params{$name});
1454                        }
1455                }
1456        }
1457        $href .= "?" . join(';', @result) if scalar @result;
1458
1459        # final transformation: trailing spaces must be escaped (URI-encoded)
1460        $href =~ s/(\s+)$/CGI::escape($1)/e;
1461
1462        if ($params{-anchor}) {
1463                $href .= "#".esc_param($params{-anchor});
1464        }
1465
1466        return $href;
1467}
1468
1469
1470## ======================================================================
1471## validation, quoting/unquoting and escaping
1472
1473sub is_valid_action {
1474        my $input = shift;
1475        return undef unless exists $actions{$input};
1476        return 1;
1477}
1478
1479sub is_valid_project {
1480        my $input = shift;
1481
1482        return unless defined $input;
1483        if (!is_valid_pathname($input) ||
1484                !(-d "$projectroot/$input") ||
1485                !check_export_ok("$projectroot/$input") ||
1486                ($strict_export && !project_in_list($input))) {
1487                return undef;
1488        } else {
1489                return 1;
1490        }
1491}
1492
1493sub is_valid_pathname {
1494        my $input = shift;
1495
1496        return undef unless defined $input;
1497        # no '.' or '..' as elements of path, i.e. no '.' or '..'
1498        # at the beginning, at the end, and between slashes.
1499        # also this catches doubled slashes
1500        if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
1501                return undef;
1502        }
1503        # no null characters
1504        if ($input =~ m!\0!) {
1505                return undef;
1506        }
1507        return 1;
1508}
1509
1510sub is_valid_ref_format {
1511        my $input = shift;
1512
1513        return undef unless defined $input;
1514        # restrictions on ref name according to git-check-ref-format
1515        if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
1516                return undef;
1517        }
1518        return 1;
1519}
1520
1521sub is_valid_refname {
1522        my $input = shift;
1523
1524        return undef unless defined $input;
1525        # textual hashes are O.K.
1526        if ($input =~ m/^[0-9a-fA-F]{40}$/) {
1527                return 1;
1528        }
1529        # it must be correct pathname
1530        is_valid_pathname($input) or return undef;
1531        # check git-check-ref-format restrictions
1532        is_valid_ref_format($input) or return undef;
1533        return 1;
1534}
1535
1536# decode sequences of octets in utf8 into Perl's internal form,
1537# which is utf-8 with utf8 flag set if needed.  gitweb writes out
1538# in utf-8 thanks to "binmode STDOUT, ':utf8'" at beginning
1539sub to_utf8 {
1540        my $str = shift;
1541        return undef unless defined $str;
1542
1543        if (utf8::is_utf8($str) || utf8::decode($str)) {
1544                return $str;
1545        } else {
1546                return decode($fallback_encoding, $str, Encode::FB_DEFAULT);
1547        }
1548}
1549
1550# quote unsafe chars, but keep the slash, even when it's not
1551# correct, but quoted slashes look too horrible in bookmarks
1552sub esc_param {
1553        my $str = shift;
1554        return undef unless defined $str;
1555        $str =~ s/([^A-Za-z0-9\-_.~()\/:@ ]+)/CGI::escape($1)/eg;
1556        $str =~ s/ /\+/g;
1557        return $str;
1558}
1559
1560# the quoting rules for path_info fragment are slightly different
1561sub esc_path_info {
1562        my $str = shift;
1563        return undef unless defined $str;
1564
1565        # path_info doesn't treat '+' as space (specially), but '?' must be escaped
1566        $str =~ s/([^A-Za-z0-9\-_.~();\/;:@&= +]+)/CGI::escape($1)/eg;
1567
1568        return $str;
1569}
1570
1571# quote unsafe chars in whole URL, so some characters cannot be quoted
1572sub esc_url {
1573        my $str = shift;
1574        return undef unless defined $str;
1575        $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&= ]+)/CGI::escape($1)/eg;
1576        $str =~ s/ /\+/g;
1577        return $str;
1578}
1579
1580# quote unsafe characters in HTML attributes
1581sub esc_attr {
1582
1583        # for XHTML conformance escaping '"' to '&quot;' is not enough
1584        return esc_html(@_);
1585}
1586
1587# replace invalid utf8 character with SUBSTITUTION sequence
1588sub esc_html {
1589        my $str = shift;
1590        my %opts = @_;
1591
1592        return undef unless defined $str;
1593
1594        $str = to_utf8($str);
1595        $str = $cgi->escapeHTML($str);
1596        if ($opts{'-nbsp'}) {
1597                $str =~ s/ /&nbsp;/g;
1598        }
1599        $str =~ s|([[:cntrl:]])|(($1 ne "\t") ? quot_cec($1) : $1)|eg;
1600        return $str;
1601}
1602
1603# quote control characters and escape filename to HTML
1604sub esc_path {
1605        my $str = shift;
1606        my %opts = @_;
1607
1608        return undef unless defined $str;
1609
1610        $str = to_utf8($str);
1611        $str = $cgi->escapeHTML($str);
1612        if ($opts{'-nbsp'}) {
1613                $str =~ s/ /&nbsp;/g;
1614        }
1615        $str =~ s|([[:cntrl:]])|quot_cec($1)|eg;
1616        return $str;
1617}
1618
1619# Sanitize for use in XHTML + application/xml+xhtm (valid XML 1.0)
1620sub sanitize {
1621        my $str = shift;
1622
1623        return undef unless defined $str;
1624
1625        $str = to_utf8($str);
1626        $str =~ s|([[:cntrl:]])|(index("\t\n\r", $1) != -1 ? $1 : quot_cec($1))|eg;
1627        return $str;
1628}
1629
1630# Make control characters "printable", using character escape codes (CEC)
1631sub quot_cec {
1632        my $cntrl = shift;
1633        my %opts = @_;
1634        my %es = ( # character escape codes, aka escape sequences
1635                "\t" => '\t',   # tab            (HT)
1636                "\n" => '\n',   # line feed      (LF)
1637                "\r" => '\r',   # carrige return (CR)
1638                "\f" => '\f',   # form feed      (FF)
1639                "\b" => '\b',   # backspace      (BS)
1640                "\a" => '\a',   # alarm (bell)   (BEL)
1641                "\e" => '\e',   # escape         (ESC)
1642                "\013" => '\v', # vertical tab   (VT)
1643                "\000" => '\0', # nul character  (NUL)
1644        );
1645        my $chr = ( (exists $es{$cntrl})
1646                    ? $es{$cntrl}
1647                    : sprintf('\%2x', ord($cntrl)) );
1648        if ($opts{-nohtml}) {
1649                return $chr;
1650        } else {
1651                return "<span class=\"cntrl\">$chr</span>";
1652        }
1653}
1654
1655# Alternatively use unicode control pictures codepoints,
1656# Unicode "printable representation" (PR)
1657sub quot_upr {
1658        my $cntrl = shift;
1659        my %opts = @_;
1660
1661        my $chr = sprintf('&#%04d;', 0x2400+ord($cntrl));
1662        if ($opts{-nohtml}) {
1663                return $chr;
1664        } else {
1665                return "<span class=\"cntrl\">$chr</span>";
1666        }
1667}
1668
1669# git may return quoted and escaped filenames
1670sub unquote {
1671        my $str = shift;
1672
1673        sub unq {
1674                my $seq = shift;
1675                my %es = ( # character escape codes, aka escape sequences
1676                        't' => "\t",   # tab            (HT, TAB)
1677                        'n' => "\n",   # newline        (NL)
1678                        'r' => "\r",   # return         (CR)
1679                        'f' => "\f",   # form feed      (FF)
1680                        'b' => "\b",   # backspace      (BS)
1681                        'a' => "\a",   # alarm (bell)   (BEL)
1682                        'e' => "\e",   # escape         (ESC)
1683                        'v' => "\013", # vertical tab   (VT)
1684                );
1685
1686                if ($seq =~ m/^[0-7]{1,3}$/) {
1687                        # octal char sequence
1688                        return chr(oct($seq));
1689                } elsif (exists $es{$seq}) {
1690                        # C escape sequence, aka character escape code
1691                        return $es{$seq};
1692                }
1693                # quoted ordinary character
1694                return $seq;
1695        }
1696
1697        if ($str =~ m/^"(.*)"$/) {
1698                # needs unquoting
1699                $str = $1;
1700                $str =~ s/\\([^0-7]|[0-7]{1,3})/unq($1)/eg;
1701        }
1702        return $str;
1703}
1704
1705# escape tabs (convert tabs to spaces)
1706sub untabify {
1707        my $line = shift;
1708
1709        while ((my $pos = index($line, "\t")) != -1) {
1710                if (my $count = (8 - ($pos % 8))) {
1711                        my $spaces = ' ' x $count;
1712                        $line =~ s/\t/$spaces/;
1713                }
1714        }
1715
1716        return $line;
1717}
1718
1719sub project_in_list {
1720        my $project = shift;
1721        my @list = git_get_projects_list();
1722        return @list && scalar(grep { $_->{'path'} eq $project } @list);
1723}
1724
1725## ----------------------------------------------------------------------
1726## HTML aware string manipulation
1727
1728# Try to chop given string on a word boundary between position
1729# $len and $len+$add_len. If there is no word boundary there,
1730# chop at $len+$add_len. Do not chop if chopped part plus ellipsis
1731# (marking chopped part) would be longer than given string.
1732sub chop_str {
1733        my $str = shift;
1734        my $len = shift;
1735        my $add_len = shift || 10;
1736        my $where = shift || 'right'; # 'left' | 'center' | 'right'
1737
1738        # Make sure perl knows it is utf8 encoded so we don't
1739        # cut in the middle of a utf8 multibyte char.
1740        $str = to_utf8($str);
1741
1742        # allow only $len chars, but don't cut a word if it would fit in $add_len
1743        # if it doesn't fit, cut it if it's still longer than the dots we would add
1744        # remove chopped character entities entirely
1745
1746        # when chopping in the middle, distribute $len into left and right part
1747        # return early if chopping wouldn't make string shorter
1748        if ($where eq 'center') {
1749                return $str if ($len + 5 >= length($str)); # filler is length 5
1750                $len = int($len/2);
1751        } else {
1752                return $str if ($len + 4 >= length($str)); # filler is length 4
1753        }
1754
1755        # regexps: ending and beginning with word part up to $add_len
1756        my $endre = qr/.{$len}\w{0,$add_len}/;
1757        my $begre = qr/\w{0,$add_len}.{$len}/;
1758
1759        if ($where eq 'left') {
1760                $str =~ m/^(.*?)($begre)$/;
1761                my ($lead, $body) = ($1, $2);
1762                if (length($lead) > 4) {
1763                        $lead = " ...";
1764                }
1765                return "$lead$body";
1766
1767        } elsif ($where eq 'center') {
1768                $str =~ m/^($endre)(.*)$/;
1769                my ($left, $str)  = ($1, $2);
1770                $str =~ m/^(.*?)($begre)$/;
1771                my ($mid, $right) = ($1, $2);
1772                if (length($mid) > 5) {
1773                        $mid = " ... ";
1774                }
1775                return "$left$mid$right";
1776
1777        } else {
1778                $str =~ m/^($endre)(.*)$/;
1779                my $body = $1;
1780                my $tail = $2;
1781                if (length($tail) > 4) {
1782                        $tail = "... ";
1783                }
1784                return "$body$tail";
1785        }
1786}
1787
1788# takes the same arguments as chop_str, but also wraps a <span> around the
1789# result with a title attribute if it does get chopped. Additionally, the
1790# string is HTML-escaped.
1791sub chop_and_escape_str {
1792        my ($str) = @_;
1793
1794        my $chopped = chop_str(@_);
1795        $str = to_utf8($str);
1796        if ($chopped eq $str) {
1797                return esc_html($chopped);
1798        } else {
1799                $str =~ s/[[:cntrl:]]/?/g;
1800                return $cgi->span({-title=>$str}, esc_html($chopped));
1801        }
1802}
1803
1804# Highlight selected fragments of string, using given CSS class,
1805# and escape HTML.  It is assumed that fragments do not overlap.
1806# Regions are passed as list of pairs (array references).
1807#
1808# Example: esc_html_hl_regions("foobar", "mark", [ 0, 3 ]) returns
1809# '<span class="mark">foo</span>bar'
1810sub esc_html_hl_regions {
1811        my ($str, $css_class, @sel) = @_;
1812        my %opts = grep { ref($_) ne 'ARRAY' } @sel;
1813        @sel     = grep { ref($_) eq 'ARRAY' } @sel;
1814        return esc_html($str, %opts) unless @sel;
1815
1816        my $out = '';
1817        my $pos = 0;
1818
1819        for my $s (@sel) {
1820                my ($begin, $end) = @$s;
1821
1822                # Don't create empty <span> elements.
1823                next if $end <= $begin;
1824
1825                my $escaped = esc_html(substr($str, $begin, $end - $begin),
1826                                       %opts);
1827
1828                $out .= esc_html(substr($str, $pos, $begin - $pos), %opts)
1829                        if ($begin - $pos > 0);
1830                $out .= $cgi->span({-class => $css_class}, $escaped);
1831
1832                $pos = $end;
1833        }
1834        $out .= esc_html(substr($str, $pos), %opts)
1835                if ($pos < length($str));
1836
1837        return $out;
1838}
1839
1840# return positions of beginning and end of each match
1841sub matchpos_list {
1842        my ($str, $regexp) = @_;
1843        return unless (defined $str && defined $regexp);
1844
1845        my @matches;
1846        while ($str =~ /$regexp/g) {
1847                push @matches, [$-[0], $+[0]];
1848        }
1849        return @matches;
1850}
1851
1852# highlight match (if any), and escape HTML
1853sub esc_html_match_hl {
1854        my ($str, $regexp) = @_;
1855        return esc_html($str) unless defined $regexp;
1856
1857        my @matches = matchpos_list($str, $regexp);
1858        return esc_html($str) unless @matches;
1859
1860        return esc_html_hl_regions($str, 'match', @matches);
1861}
1862
1863
1864# highlight match (if any) of shortened string, and escape HTML
1865sub esc_html_match_hl_chopped {
1866        my ($str, $chopped, $regexp) = @_;
1867        return esc_html_match_hl($str, $regexp) unless defined $chopped;
1868
1869        my @matches = matchpos_list($str, $regexp);
1870        return esc_html($chopped) unless @matches;
1871
1872        # filter matches so that we mark chopped string
1873        my $tail = "... "; # see chop_str
1874        unless ($chopped =~ s/\Q$tail\E$//) {
1875                $tail = '';
1876        }
1877        my $chop_len = length($chopped);
1878        my $tail_len = length($tail);
1879        my @filtered;
1880
1881        for my $m (@matches) {
1882                if ($m->[0] > $chop_len) {
1883                        push @filtered, [ $chop_len, $chop_len + $tail_len ] if ($tail_len > 0);
1884                        last;
1885                } elsif ($m->[1] > $chop_len) {
1886                        push @filtered, [ $m->[0], $chop_len + $tail_len ];
1887                        last;
1888                }
1889                push @filtered, $m;
1890        }
1891
1892        return esc_html_hl_regions($chopped . $tail, 'match', @filtered);
1893}
1894
1895## ----------------------------------------------------------------------
1896## functions returning short strings
1897
1898# CSS class for given age value (in seconds)
1899sub age_class {
1900        my $age = shift;
1901
1902        if (!defined $age) {
1903                return "noage";
1904        } elsif ($age < 60*60*2) {
1905                return "age0";
1906        } elsif ($age < 60*60*24*2) {
1907                return "age1";
1908        } else {
1909                return "age2";
1910        }
1911}
1912
1913# convert age in seconds to "nn units ago" string
1914sub age_string {
1915        my $age = shift;
1916        my $age_str;
1917
1918        if ($age > 60*60*24*365*2) {
1919                $age_str = (int $age/60/60/24/365);
1920                $age_str .= " years ago";
1921        } elsif ($age > 60*60*24*(365/12)*2) {
1922                $age_str = int $age/60/60/24/(365/12);
1923                $age_str .= " months ago";
1924        } elsif ($age > 60*60*24*7*2) {
1925                $age_str = int $age/60/60/24/7;
1926                $age_str .= " weeks ago";
1927        } elsif ($age > 60*60*24*2) {
1928                $age_str = int $age/60/60/24;
1929                $age_str .= " days ago";
1930        } elsif ($age > 60*60*2) {
1931                $age_str = int $age/60/60;
1932                $age_str .= " hours ago";
1933        } elsif ($age > 60*2) {
1934                $age_str = int $age/60;
1935                $age_str .= " min ago";
1936        } elsif ($age > 2) {
1937                $age_str = int $age;
1938                $age_str .= " sec ago";
1939        } else {
1940                $age_str .= " right now";
1941        }
1942        return $age_str;
1943}
1944
1945use constant {
1946        S_IFINVALID => 0030000,
1947        S_IFGITLINK => 0160000,
1948};
1949
1950# submodule/subproject, a commit object reference
1951sub S_ISGITLINK {
1952        my $mode = shift;
1953
1954        return (($mode & S_IFMT) == S_IFGITLINK)
1955}
1956
1957# convert file mode in octal to symbolic file mode string
1958sub mode_str {
1959        my $mode = oct shift;
1960
1961        if (S_ISGITLINK($mode)) {
1962                return 'm---------';
1963        } elsif (S_ISDIR($mode & S_IFMT)) {
1964                return 'drwxr-xr-x';
1965        } elsif (S_ISLNK($mode)) {
1966                return 'lrwxrwxrwx';
1967        } elsif (S_ISREG($mode)) {
1968                # git cares only about the executable bit
1969                if ($mode & S_IXUSR) {
1970                        return '-rwxr-xr-x';
1971                } else {
1972                        return '-rw-r--r--';
1973                };
1974        } else {
1975                return '----------';
1976        }
1977}
1978
1979# convert file mode in octal to file type string
1980sub file_type {
1981        my $mode = shift;
1982
1983        if ($mode !~ m/^[0-7]+$/) {
1984                return $mode;
1985        } else {
1986                $mode = oct $mode;
1987        }
1988
1989        if (S_ISGITLINK($mode)) {
1990                return "submodule";
1991        } elsif (S_ISDIR($mode & S_IFMT)) {
1992                return "directory";
1993        } elsif (S_ISLNK($mode)) {
1994                return "symlink";
1995        } elsif (S_ISREG($mode)) {
1996                return "file";
1997        } else {
1998                return "unknown";
1999        }
2000}
2001
2002# convert file mode in octal to file type description string
2003sub file_type_long {
2004        my $mode = shift;
2005
2006        if ($mode !~ m/^[0-7]+$/) {
2007                return $mode;
2008        } else {
2009                $mode = oct $mode;
2010        }
2011
2012        if (S_ISGITLINK($mode)) {
2013                return "submodule";
2014        } elsif (S_ISDIR($mode & S_IFMT)) {
2015                return "directory";
2016        } elsif (S_ISLNK($mode)) {
2017                return "symlink";
2018        } elsif (S_ISREG($mode)) {
2019                if ($mode & S_IXUSR) {
2020                        return "executable";
2021                } else {
2022                        return "file";
2023                };
2024        } else {
2025                return "unknown";
2026        }
2027}
2028
2029
2030## ----------------------------------------------------------------------
2031## functions returning short HTML fragments, or transforming HTML fragments
2032## which don't belong to other sections
2033
2034# format line of commit message.
2035sub format_log_line_html {
2036        my $line = shift;
2037
2038        $line = esc_html($line, -nbsp=>1);
2039        $line =~ s{\b([0-9a-fA-F]{8,40})\b}{
2040                $cgi->a({-href => href(action=>"object", hash=>$1),
2041                                        -class => "text"}, $1);
2042        }eg;
2043
2044        return $line;
2045}
2046
2047# format marker of refs pointing to given object
2048
2049# the destination action is chosen based on object type and current context:
2050# - for annotated tags, we choose the tag view unless it's the current view
2051#   already, in which case we go to shortlog view
2052# - for other refs, we keep the current view if we're in history, shortlog or
2053#   log view, and select shortlog otherwise
2054sub format_ref_marker {
2055        my ($refs, $id) = @_;
2056        my $markers = '';
2057
2058        if (defined $refs->{$id}) {
2059                foreach my $ref (@{$refs->{$id}}) {
2060                        # this code exploits the fact that non-lightweight tags are the
2061                        # only indirect objects, and that they are the only objects for which
2062                        # we want to use tag instead of shortlog as action
2063                        my ($type, $name) = qw();
2064                        my $indirect = ($ref =~ s/\^\{\}$//);
2065                        # e.g. tags/v2.6.11 or heads/next
2066                        if ($ref =~ m!^(.*?)s?/(.*)$!) {
2067                                $type = $1;
2068                                $name = $2;
2069                        } else {
2070                                $type = "ref";
2071                                $name = $ref;
2072                        }
2073
2074                        my $class = $type;
2075                        $class .= " indirect" if $indirect;
2076
2077                        my $dest_action = "shortlog";
2078
2079                        if ($indirect) {
2080                                $dest_action = "tag" unless $action eq "tag";
2081                        } elsif ($action =~ /^(history|(short)?log)$/) {
2082                                $dest_action = $action;
2083                        }
2084
2085                        my $dest = "";
2086                        $dest .= "refs/" unless $ref =~ m!^refs/!;
2087                        $dest .= $ref;
2088
2089                        my $link = $cgi->a({
2090                                -href => href(
2091                                        action=>$dest_action,
2092                                        hash=>$dest
2093                                )}, $name);
2094
2095                        $markers .= " <span class=\"".esc_attr($class)."\" title=\"".esc_attr($ref)."\">" .
2096                                $link . "</span>";
2097                }
2098        }
2099
2100        if ($markers) {
2101                return ' <span class="refs">'. $markers . '</span>';
2102        } else {
2103                return "";
2104        }
2105}
2106
2107# format, perhaps shortened and with markers, title line
2108sub format_subject_html {
2109        my ($long, $short, $href, $extra) = @_;
2110        $extra = '' unless defined($extra);
2111
2112        if (length($short) < length($long)) {
2113                $long =~ s/[[:cntrl:]]/?/g;
2114                return $cgi->a({-href => $href, -class => "list subject",
2115                                -title => to_utf8($long)},
2116                       esc_html($short)) . $extra;
2117        } else {
2118                return $cgi->a({-href => $href, -class => "list subject"},
2119                       esc_html($long)) . $extra;
2120        }
2121}
2122
2123# Rather than recomputing the url for an email multiple times, we cache it
2124# after the first hit. This gives a visible benefit in views where the avatar
2125# for the same email is used repeatedly (e.g. shortlog).
2126# The cache is shared by all avatar engines (currently gravatar only), which
2127# are free to use it as preferred. Since only one avatar engine is used for any
2128# given page, there's no risk for cache conflicts.
2129our %avatar_cache = ();
2130
2131# Compute the picon url for a given email, by using the picon search service over at
2132# http://www.cs.indiana.edu/picons/search.html
2133sub picon_url {
2134        my $email = lc shift;
2135        if (!$avatar_cache{$email}) {
2136                my ($user, $domain) = split('@', $email);
2137                $avatar_cache{$email} =
2138                        "//www.cs.indiana.edu/cgi-pub/kinzler/piconsearch.cgi/" .
2139                        "$domain/$user/" .
2140                        "users+domains+unknown/up/single";
2141        }
2142        return $avatar_cache{$email};
2143}
2144
2145# Compute the gravatar url for a given email, if it's not in the cache already.
2146# Gravatar stores only the part of the URL before the size, since that's the
2147# one computationally more expensive. This also allows reuse of the cache for
2148# different sizes (for this particular engine).
2149sub gravatar_url {
2150        my $email = lc shift;
2151        my $size = shift;
2152        $avatar_cache{$email} ||=
2153                "//www.gravatar.com/avatar/" .
2154                        Digest::MD5::md5_hex($email) . "?s=";
2155        return $avatar_cache{$email} . $size;
2156}
2157
2158# Insert an avatar for the given $email at the given $size if the feature
2159# is enabled.
2160sub git_get_avatar {
2161        my ($email, %opts) = @_;
2162        my $pre_white  = ($opts{-pad_before} ? "&nbsp;" : "");
2163        my $post_white = ($opts{-pad_after}  ? "&nbsp;" : "");
2164        $opts{-size} ||= 'default';
2165        my $size = $avatar_size{$opts{-size}} || $avatar_size{'default'};
2166        my $url = "";
2167        if ($git_avatar eq 'gravatar') {
2168                $url = gravatar_url($email, $size);
2169        } elsif ($git_avatar eq 'picon') {
2170                $url = picon_url($email);
2171        }
2172        # Other providers can be added by extending the if chain, defining $url
2173        # as needed. If no variant puts something in $url, we assume avatars
2174        # are completely disabled/unavailable.
2175        if ($url) {
2176                return $pre_white .
2177                       "<img width=\"$size\" " .
2178                            "class=\"avatar\" " .
2179                            "src=\"".esc_url($url)."\" " .
2180                            "alt=\"\" " .
2181                       "/>" . $post_white;
2182        } else {
2183                return "";
2184        }
2185}
2186
2187sub format_search_author {
2188        my ($author, $searchtype, $displaytext) = @_;
2189        my $have_search = gitweb_check_feature('search');
2190
2191        if ($have_search) {
2192                my $performed = "";
2193                if ($searchtype eq 'author') {
2194                        $performed = "authored";
2195                } elsif ($searchtype eq 'committer') {
2196                        $performed = "committed";
2197                }
2198
2199                return $cgi->a({-href => href(action=>"search", hash=>$hash,
2200                                searchtext=>$author,
2201                                searchtype=>$searchtype), class=>"list",
2202                                title=>"Search for commits $performed by $author"},
2203                                $displaytext);
2204
2205        } else {
2206                return $displaytext;
2207        }
2208}
2209
2210# format the author name of the given commit with the given tag
2211# the author name is chopped and escaped according to the other
2212# optional parameters (see chop_str).
2213sub format_author_html {
2214        my $tag = shift;
2215        my $co = shift;
2216        my $author = chop_and_escape_str($co->{'author_name'}, @_);
2217        return "<$tag class=\"author\">" .
2218               format_search_author($co->{'author_name'}, "author",
2219                       git_get_avatar($co->{'author_email'}, -pad_after => 1) .
2220                       $author) .
2221               "</$tag>";
2222}
2223
2224# format git diff header line, i.e. "diff --(git|combined|cc) ..."
2225sub format_git_diff_header_line {
2226        my $line = shift;
2227        my $diffinfo = shift;
2228        my ($from, $to) = @_;
2229
2230        if ($diffinfo->{'nparents'}) {
2231                # combined diff
2232                $line =~ s!^(diff (.*?) )"?.*$!$1!;
2233                if ($to->{'href'}) {
2234                        $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
2235                                         esc_path($to->{'file'}));
2236                } else { # file was deleted (no href)
2237                        $line .= esc_path($to->{'file'});
2238                }
2239        } else {
2240                # "ordinary" diff
2241                $line =~ s!^(diff (.*?) )"?a/.*$!$1!;
2242                if ($from->{'href'}) {
2243                        $line .= $cgi->a({-href => $from->{'href'}, -class => "path"},
2244                                         'a/' . esc_path($from->{'file'}));
2245                } else { # file was added (no href)
2246                        $line .= 'a/' . esc_path($from->{'file'});
2247                }
2248                $line .= ' ';
2249                if ($to->{'href'}) {
2250                        $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
2251                                         'b/' . esc_path($to->{'file'}));
2252                } else { # file was deleted
2253                        $line .= 'b/' . esc_path($to->{'file'});
2254                }
2255        }
2256
2257        return "<div class=\"diff header\">$line</div>\n";
2258}
2259
2260# format extended diff header line, before patch itself
2261sub format_extended_diff_header_line {
2262        my $line = shift;
2263        my $diffinfo = shift;
2264        my ($from, $to) = @_;
2265
2266        # match <path>
2267        if ($line =~ s!^((copy|rename) from ).*$!$1! && $from->{'href'}) {
2268                $line .= $cgi->a({-href=>$from->{'href'}, -class=>"path"},
2269                                       esc_path($from->{'file'}));
2270        }
2271        if ($line =~ s!^((copy|rename) to ).*$!$1! && $to->{'href'}) {
2272                $line .= $cgi->a({-href=>$to->{'href'}, -class=>"path"},
2273                                 esc_path($to->{'file'}));
2274        }
2275        # match single <mode>
2276        if ($line =~ m/\s(\d{6})$/) {
2277                $line .= '<span class="info"> (' .
2278                         file_type_long($1) .
2279                         ')</span>';
2280        }
2281        # match <hash>
2282        if ($line =~ m/^index [0-9a-fA-F]{40},[0-9a-fA-F]{40}/) {
2283                # can match only for combined diff
2284                $line = 'index ';
2285                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2286                        if ($from->{'href'}[$i]) {
2287                                $line .= $cgi->a({-href=>$from->{'href'}[$i],
2288                                                  -class=>"hash"},
2289                                                 substr($diffinfo->{'from_id'}[$i],0,7));
2290                        } else {
2291                                $line .= '0' x 7;
2292                        }
2293                        # separator
2294                        $line .= ',' if ($i < $diffinfo->{'nparents'} - 1);
2295                }
2296                $line .= '..';
2297                if ($to->{'href'}) {
2298                        $line .= $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
2299                                         substr($diffinfo->{'to_id'},0,7));
2300                } else {
2301                        $line .= '0' x 7;
2302                }
2303
2304        } elsif ($line =~ m/^index [0-9a-fA-F]{40}..[0-9a-fA-F]{40}/) {
2305                # can match only for ordinary diff
2306                my ($from_link, $to_link);
2307                if ($from->{'href'}) {
2308                        $from_link = $cgi->a({-href=>$from->{'href'}, -class=>"hash"},
2309                                             substr($diffinfo->{'from_id'},0,7));
2310                } else {
2311                        $from_link = '0' x 7;
2312                }
2313                if ($to->{'href'}) {
2314                        $to_link = $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
2315                                           substr($diffinfo->{'to_id'},0,7));
2316                } else {
2317                        $to_link = '0' x 7;
2318                }
2319                my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2320                $line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
2321        }
2322
2323        return $line . "<br/>\n";
2324}
2325
2326# format from-file/to-file diff header
2327sub format_diff_from_to_header {
2328        my ($from_line, $to_line, $diffinfo, $from, $to, @parents) = @_;
2329        my $line;
2330        my $result = '';
2331
2332        $line = $from_line;
2333        #assert($line =~ m/^---/) if DEBUG;
2334        # no extra formatting for "^--- /dev/null"
2335        if (! $diffinfo->{'nparents'}) {
2336                # ordinary (single parent) diff
2337                if ($line =~ m!^--- "?a/!) {
2338                        if ($from->{'href'}) {
2339                                $line = '--- a/' .
2340                                        $cgi->a({-href=>$from->{'href'}, -class=>"path"},
2341                                                esc_path($from->{'file'}));
2342                        } else {
2343                                $line = '--- a/' .
2344                                        esc_path($from->{'file'});
2345                        }
2346                }
2347                $result .= qq!<div class="diff from_file">$line</div>\n!;
2348
2349        } else {
2350                # combined diff (merge commit)
2351                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2352                        if ($from->{'href'}[$i]) {
2353                                $line = '--- ' .
2354                                        $cgi->a({-href=>href(action=>"blobdiff",
2355                                                             hash_parent=>$diffinfo->{'from_id'}[$i],
2356                                                             hash_parent_base=>$parents[$i],
2357                                                             file_parent=>$from->{'file'}[$i],
2358                                                             hash=>$diffinfo->{'to_id'},
2359                                                             hash_base=>$hash,
2360                                                             file_name=>$to->{'file'}),
2361                                                 -class=>"path",
2362                                                 -title=>"diff" . ($i+1)},
2363                                                $i+1) .
2364                                        '/' .
2365                                        $cgi->a({-href=>$from->{'href'}[$i], -class=>"path"},
2366                                                esc_path($from->{'file'}[$i]));
2367                        } else {
2368                                $line = '--- /dev/null';
2369                        }
2370                        $result .= qq!<div class="diff from_file">$line</div>\n!;
2371                }
2372        }
2373
2374        $line = $to_line;
2375        #assert($line =~ m/^\+\+\+/) if DEBUG;
2376        # no extra formatting for "^+++ /dev/null"
2377        if ($line =~ m!^\+\+\+ "?b/!) {
2378                if ($to->{'href'}) {
2379                        $line = '+++ b/' .
2380                                $cgi->a({-href=>$to->{'href'}, -class=>"path"},
2381                                        esc_path($to->{'file'}));
2382                } else {
2383                        $line = '+++ b/' .
2384                                esc_path($to->{'file'});
2385                }
2386        }
2387        $result .= qq!<div class="diff to_file">$line</div>\n!;
2388
2389        return $result;
2390}
2391
2392# create note for patch simplified by combined diff
2393sub format_diff_cc_simplified {
2394        my ($diffinfo, @parents) = @_;
2395        my $result = '';
2396
2397        $result .= "<div class=\"diff header\">" .
2398                   "diff --cc ";
2399        if (!is_deleted($diffinfo)) {
2400                $result .= $cgi->a({-href => href(action=>"blob",
2401                                                  hash_base=>$hash,
2402                                                  hash=>$diffinfo->{'to_id'},
2403                                                  file_name=>$diffinfo->{'to_file'}),
2404                                    -class => "path"},
2405                                   esc_path($diffinfo->{'to_file'}));
2406        } else {
2407                $result .= esc_path($diffinfo->{'to_file'});
2408        }
2409        $result .= "</div>\n" . # class="diff header"
2410                   "<div class=\"diff nodifferences\">" .
2411                   "Simple merge" .
2412                   "</div>\n"; # class="diff nodifferences"
2413
2414        return $result;
2415}
2416
2417sub diff_line_class {
2418        my ($line, $from, $to) = @_;
2419
2420        # ordinary diff
2421        my $num_sign = 1;
2422        # combined diff
2423        if ($from && $to && ref($from->{'href'}) eq "ARRAY") {
2424                $num_sign = scalar @{$from->{'href'}};
2425        }
2426
2427        my @diff_line_classifier = (
2428                { regexp => qr/^\@\@{$num_sign} /, class => "chunk_header"},
2429                { regexp => qr/^\\/,               class => "incomplete"  },
2430                { regexp => qr/^ {$num_sign}/,     class => "ctx" },
2431                # classifier for context must come before classifier add/rem,
2432                # or we would have to use more complicated regexp, for example
2433                # qr/(?= {0,$m}\+)[+ ]{$num_sign}/, where $m = $num_sign - 1;
2434                { regexp => qr/^[+ ]{$num_sign}/,   class => "add" },
2435                { regexp => qr/^[- ]{$num_sign}/,   class => "rem" },
2436        );
2437        for my $clsfy (@diff_line_classifier) {
2438                return $clsfy->{'class'}
2439                        if ($line =~ $clsfy->{'regexp'});
2440        }
2441
2442        # fallback
2443        return "";
2444}
2445
2446# assumes that $from and $to are defined and correctly filled,
2447# and that $line holds a line of chunk header for unified diff
2448sub format_unidiff_chunk_header {
2449        my ($line, $from, $to) = @_;
2450
2451        my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
2452                $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
2453
2454        $from_lines = 0 unless defined $from_lines;
2455        $to_lines   = 0 unless defined $to_lines;
2456
2457        if ($from->{'href'}) {
2458                $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
2459                                     -class=>"list"}, $from_text);
2460        }
2461        if ($to->{'href'}) {
2462                $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
2463                                     -class=>"list"}, $to_text);
2464        }
2465        $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
2466                "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
2467        return $line;
2468}
2469
2470# assumes that $from and $to are defined and correctly filled,
2471# and that $line holds a line of chunk header for combined diff
2472sub format_cc_diff_chunk_header {
2473        my ($line, $from, $to) = @_;
2474
2475        my ($prefix, $ranges, $section) = $line =~ m/^(\@+) (.*?) \@+(.*)$/;
2476        my (@from_text, @from_start, @from_nlines, $to_text, $to_start, $to_nlines);
2477
2478        @from_text = split(' ', $ranges);
2479        for (my $i = 0; $i < @from_text; ++$i) {
2480                ($from_start[$i], $from_nlines[$i]) =
2481                        (split(',', substr($from_text[$i], 1)), 0);
2482        }
2483
2484        $to_text   = pop @from_text;
2485        $to_start  = pop @from_start;
2486        $to_nlines = pop @from_nlines;
2487
2488        $line = "<span class=\"chunk_info\">$prefix ";
2489        for (my $i = 0; $i < @from_text; ++$i) {
2490                if ($from->{'href'}[$i]) {
2491                        $line .= $cgi->a({-href=>"$from->{'href'}[$i]#l$from_start[$i]",
2492                                          -class=>"list"}, $from_text[$i]);
2493                } else {
2494                        $line .= $from_text[$i];
2495                }
2496                $line .= " ";
2497        }
2498        if ($to->{'href'}) {
2499                $line .= $cgi->a({-href=>"$to->{'href'}#l$to_start",
2500                                  -class=>"list"}, $to_text);
2501        } else {
2502                $line .= $to_text;
2503        }
2504        $line .= " $prefix</span>" .
2505                 "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
2506        return $line;
2507}
2508
2509# process patch (diff) line (not to be used for diff headers),
2510# returning HTML-formatted (but not wrapped) line.
2511# If the line is passed as a reference, it is treated as HTML and not
2512# esc_html()'ed.
2513sub format_diff_line {
2514        my ($line, $diff_class, $from, $to) = @_;
2515
2516        if (ref($line)) {
2517                $line = $$line;
2518        } else {
2519                chomp $line;
2520                $line = untabify($line);
2521
2522                if ($from && $to && $line =~ m/^\@{2} /) {
2523                        $line = format_unidiff_chunk_header($line, $from, $to);
2524                } elsif ($from && $to && $line =~ m/^\@{3}/) {
2525                        $line = format_cc_diff_chunk_header($line, $from, $to);
2526                } else {
2527                        $line = esc_html($line, -nbsp=>1);
2528                }
2529        }
2530
2531        my $diff_classes = "diff";
2532        $diff_classes .= " $diff_class" if ($diff_class);
2533        $line = "<div class=\"$diff_classes\">$line</div>\n";
2534
2535        return $line;
2536}
2537
2538# Generates undef or something like "_snapshot_" or "snapshot (_tbz2_ _zip_)",
2539# linked.  Pass the hash of the tree/commit to snapshot.
2540sub format_snapshot_links {
2541        my ($hash) = @_;
2542        my $num_fmts = @snapshot_fmts;
2543        if ($num_fmts > 1) {
2544                # A parenthesized list of links bearing format names.
2545                # e.g. "snapshot (_tar.gz_ _zip_)"
2546                return "snapshot (" . join(' ', map
2547                        $cgi->a({
2548                                -href => href(
2549                                        action=>"snapshot",
2550                                        hash=>$hash,
2551                                        snapshot_format=>$_
2552                                )
2553                        }, $known_snapshot_formats{$_}{'display'})
2554                , @snapshot_fmts) . ")";
2555        } elsif ($num_fmts == 1) {
2556                # A single "snapshot" link whose tooltip bears the format name.
2557                # i.e. "_snapshot_"
2558                my ($fmt) = @snapshot_fmts;
2559                return
2560                        $cgi->a({
2561                                -href => href(
2562                                        action=>"snapshot",
2563                                        hash=>$hash,
2564                                        snapshot_format=>$fmt
2565                                ),
2566                                -title => "in format: $known_snapshot_formats{$fmt}{'display'}"
2567                        }, "snapshot");
2568        } else { # $num_fmts == 0
2569                return undef;
2570        }
2571}
2572
2573## ......................................................................
2574## functions returning values to be passed, perhaps after some
2575## transformation, to other functions; e.g. returning arguments to href()
2576
2577# returns hash to be passed to href to generate gitweb URL
2578# in -title key it returns description of link
2579sub get_feed_info {
2580        my $format = shift || 'Atom';
2581        my %res = (action => lc($format));
2582        my $matched_ref = 0;
2583
2584        # feed links are possible only for project views
2585        return unless (defined $project);
2586        # some views should link to OPML, or to generic project feed,
2587        # or don't have specific feed yet (so they should use generic)
2588        return if (!$action || $action =~ /^(?:tags|heads|forks|tag|search)$/x);
2589
2590        my $branch = undef;
2591        # branches refs uses 'refs/' + $get_branch_refs()[x] + '/' prefix
2592        # (fullname) to differentiate from tag links; this also makes
2593        # possible to detect branch links
2594        for my $ref (get_branch_refs()) {
2595                if ((defined $hash_base && $hash_base =~ m!^refs/\Q$ref\E/(.*)$!) ||
2596                    (defined $hash      && $hash      =~ m!^refs/\Q$ref\E/(.*)$!)) {
2597                        $branch = $1;
2598                        $matched_ref = $ref;
2599                        last;
2600                }
2601        }
2602        # find log type for feed description (title)
2603        my $type = 'log';
2604        if (defined $file_name) {
2605                $type  = "history of $file_name";
2606                $type .= "/" if ($action eq 'tree');
2607                $type .= " on '$branch'" if (defined $branch);
2608        } else {
2609                $type = "log of $branch" if (defined $branch);
2610        }
2611
2612        $res{-title} = $type;
2613        $res{'hash'} = (defined $branch ? "refs/$matched_ref/$branch" : undef);
2614        $res{'file_name'} = $file_name;
2615
2616        return %res;
2617}
2618
2619## ----------------------------------------------------------------------
2620## git utility subroutines, invoking git commands
2621
2622# returns path to the core git executable and the --git-dir parameter as list
2623sub git_cmd {
2624        $number_of_git_cmds++;
2625        return $GIT, '--git-dir='.$git_dir;
2626}
2627
2628# quote the given arguments for passing them to the shell
2629# quote_command("command", "arg 1", "arg with ' and ! characters")
2630# => "'command' 'arg 1' 'arg with '\'' and '\!' characters'"
2631# Try to avoid using this function wherever possible.
2632sub quote_command {
2633        return join(' ',
2634                map { my $a = $_; $a =~ s/(['!])/'\\$1'/g; "'$a'" } @_ );
2635}
2636
2637# get HEAD ref of given project as hash
2638sub git_get_head_hash {
2639        return git_get_full_hash(shift, 'HEAD');
2640}
2641
2642sub git_get_full_hash {
2643        return git_get_hash(@_);
2644}
2645
2646sub git_get_short_hash {
2647        return git_get_hash(@_, '--short=7');
2648}
2649
2650sub git_get_hash {
2651        my ($project, $hash, @options) = @_;
2652        my $o_git_dir = $git_dir;
2653        my $retval = undef;
2654        $git_dir = "$projectroot/$project";
2655        if (open my $fd, '-|', git_cmd(), 'rev-parse',
2656            '--verify', '-q', @options, $hash) {
2657                $retval = <$fd>;
2658                chomp $retval if defined $retval;
2659                close $fd;
2660        }
2661        if (defined $o_git_dir) {
2662                $git_dir = $o_git_dir;
2663        }
2664        return $retval;
2665}
2666
2667# get type of given object
2668sub git_get_type {
2669        my $hash = shift;
2670
2671        open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
2672        my $type = <$fd>;
2673        close $fd or return;
2674        chomp $type;
2675        return $type;
2676}
2677
2678# repository configuration
2679our $config_file = '';
2680our %config;
2681
2682# store multiple values for single key as anonymous array reference
2683# single values stored directly in the hash, not as [ <value> ]
2684sub hash_set_multi {
2685        my ($hash, $key, $value) = @_;
2686
2687        if (!exists $hash->{$key}) {
2688                $hash->{$key} = $value;
2689        } elsif (!ref $hash->{$key}) {
2690                $hash->{$key} = [ $hash->{$key}, $value ];
2691        } else {
2692                push @{$hash->{$key}}, $value;
2693        }
2694}
2695
2696# return hash of git project configuration
2697# optionally limited to some section, e.g. 'gitweb'
2698sub git_parse_project_config {
2699        my $section_regexp = shift;
2700        my %config;
2701
2702        local $/ = "\0";
2703
2704        open my $fh, "-|", git_cmd(), "config", '-z', '-l',
2705                or return;
2706
2707        while (my $keyval = <$fh>) {
2708                chomp $keyval;
2709                my ($key, $value) = split(/\n/, $keyval, 2);
2710
2711                hash_set_multi(\%config, $key, $value)
2712                        if (!defined $section_regexp || $key =~ /^(?:$section_regexp)\./o);
2713        }
2714        close $fh;
2715
2716        return %config;
2717}
2718
2719# convert config value to boolean: 'true' or 'false'
2720# no value, number > 0, 'true' and 'yes' values are true
2721# rest of values are treated as false (never as error)
2722sub config_to_bool {
2723        my $val = shift;
2724
2725        return 1 if !defined $val;             # section.key
2726
2727        # strip leading and trailing whitespace
2728        $val =~ s/^\s+//;
2729        $val =~ s/\s+$//;
2730
2731        return (($val =~ /^\d+$/ && $val) ||   # section.key = 1
2732                ($val =~ /^(?:true|yes)$/i));  # section.key = true
2733}
2734
2735# convert config value to simple decimal number
2736# an optional value suffix of 'k', 'm', or 'g' will cause the value
2737# to be multiplied by 1024, 1048576, or 1073741824
2738sub config_to_int {
2739        my $val = shift;
2740
2741        # strip leading and trailing whitespace
2742        $val =~ s/^\s+//;
2743        $val =~ s/\s+$//;
2744
2745        if (my ($num, $unit) = ($val =~ /^([0-9]*)([kmg])$/i)) {
2746                $unit = lc($unit);
2747                # unknown unit is treated as 1
2748                return $num * ($unit eq 'g' ? 1073741824 :
2749                               $unit eq 'm' ?    1048576 :
2750                               $unit eq 'k' ?       1024 : 1);
2751        }
2752        return $val;
2753}
2754
2755# convert config value to array reference, if needed
2756sub config_to_multi {
2757        my $val = shift;
2758
2759        return ref($val) ? $val : (defined($val) ? [ $val ] : []);
2760}
2761
2762sub git_get_project_config {
2763        my ($key, $type) = @_;
2764
2765        return unless defined $git_dir;
2766
2767        # key sanity check
2768        return unless ($key);
2769        # only subsection, if exists, is case sensitive,
2770        # and not lowercased by 'git config -z -l'
2771        if (my ($hi, $mi, $lo) = ($key =~ /^([^.]*)\.(.*)\.([^.]*)$/)) {
2772                $lo =~ s/_//g;
2773                $key = join(".", lc($hi), $mi, lc($lo));
2774                return if ($lo =~ /\W/ || $hi =~ /\W/);
2775        } else {
2776                $key = lc($key);
2777                $key =~ s/_//g;
2778                return if ($key =~ /\W/);
2779        }
2780        $key =~ s/^gitweb\.//;
2781
2782        # type sanity check
2783        if (defined $type) {
2784                $type =~ s/^--//;
2785                $type = undef
2786                        unless ($type eq 'bool' || $type eq 'int');
2787        }
2788
2789        # get config
2790        if (!defined $config_file ||
2791            $config_file ne "$git_dir/config") {
2792                %config = git_parse_project_config('gitweb');
2793                $config_file = "$git_dir/config";
2794        }
2795
2796        # check if config variable (key) exists
2797        return unless exists $config{"gitweb.$key"};
2798
2799        # ensure given type
2800        if (!defined $type) {
2801                return $config{"gitweb.$key"};
2802        } elsif ($type eq 'bool') {
2803                # backward compatibility: 'git config --bool' returns true/false
2804                return config_to_bool($config{"gitweb.$key"}) ? 'true' : 'false';
2805        } elsif ($type eq 'int') {
2806                return config_to_int($config{"gitweb.$key"});
2807        }
2808        return $config{"gitweb.$key"};
2809}
2810
2811# get hash of given path at given ref
2812sub git_get_hash_by_path {
2813        my $base = shift;
2814        my $path = shift || return undef;
2815        my $type = shift;
2816
2817        $path =~ s,/+$,,;
2818
2819        open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
2820                or die_error(500, "Open git-ls-tree failed");
2821        my $line = <$fd>;
2822        close $fd or return undef;
2823
2824        if (!defined $line) {
2825                # there is no tree or hash given by $path at $base
2826                return undef;
2827        }
2828
2829        #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
2830        $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
2831        if (defined $type && $type ne $2) {
2832                # type doesn't match
2833                return undef;
2834        }
2835        return $3;
2836}
2837
2838# get path of entry with given hash at given tree-ish (ref)
2839# used to get 'from' filename for combined diff (merge commit) for renames
2840sub git_get_path_by_hash {
2841        my $base = shift || return;
2842        my $hash = shift || return;
2843
2844        local $/ = "\0";
2845
2846        open my $fd, "-|", git_cmd(), "ls-tree", '-r', '-t', '-z', $base
2847                or return undef;
2848        while (my $line = <$fd>) {
2849                chomp $line;
2850
2851                #'040000 tree 595596a6a9117ddba9fe379b6b012b558bac8423  gitweb'
2852                #'100644 blob e02e90f0429be0d2a69b76571101f20b8f75530f  gitweb/README'
2853                if ($line =~ m/(?:[0-9]+) (?:.+) $hash\t(.+)$/) {
2854                        close $fd;
2855                        return $1;
2856                }
2857        }
2858        close $fd;
2859        return undef;
2860}
2861
2862## ......................................................................
2863## git utility functions, directly accessing git repository
2864
2865# get the value of config variable either from file named as the variable
2866# itself in the repository ($GIT_DIR/$name file), or from gitweb.$name
2867# configuration variable in the repository config file.
2868sub git_get_file_or_project_config {
2869        my ($path, $name) = @_;
2870
2871        $git_dir = "$projectroot/$path";
2872        open my $fd, '<', "$git_dir/$name"
2873                or return git_get_project_config($name);
2874        my $conf = <$fd>;
2875        close $fd;
2876        if (defined $conf) {
2877                chomp $conf;
2878        }
2879        return $conf;
2880}
2881
2882sub git_get_project_description {
2883        my $path = shift;
2884        return git_get_file_or_project_config($path, 'description');
2885}
2886
2887sub git_get_project_category {
2888        my $path = shift;
2889        return git_get_file_or_project_config($path, 'category');
2890}
2891
2892
2893# supported formats:
2894# * $GIT_DIR/ctags/<tagname> file (in 'ctags' subdirectory)
2895#   - if its contents is a number, use it as tag weight,
2896#   - otherwise add a tag with weight 1
2897# * $GIT_DIR/ctags file, each line is a tag (with weight 1)
2898#   the same value multiple times increases tag weight
2899# * `gitweb.ctag' multi-valued repo config variable
2900sub git_get_project_ctags {
2901        my $project = shift;
2902        my $ctags = {};
2903
2904        $git_dir = "$projectroot/$project";
2905        if (opendir my $dh, "$git_dir/ctags") {
2906                my @files = grep { -f $_ } map { "$git_dir/ctags/$_" } readdir($dh);
2907                foreach my $tagfile (@files) {
2908                        open my $ct, '<', $tagfile
2909                                or next;
2910                        my $val = <$ct>;
2911                        chomp $val if $val;
2912                        close $ct;
2913
2914                        (my $ctag = $tagfile) =~ s#.*/##;
2915                        if ($val =~ /^\d+$/) {
2916                                $ctags->{$ctag} = $val;
2917                        } else {
2918                                $ctags->{$ctag} = 1;
2919                        }
2920                }
2921                closedir $dh;
2922
2923        } elsif (open my $fh, '<', "$git_dir/ctags") {
2924                while (my $line = <$fh>) {
2925                        chomp $line;
2926                        $ctags->{$line}++ if $line;
2927                }
2928                close $fh;
2929
2930        } else {
2931                my $taglist = config_to_multi(git_get_project_config('ctag'));
2932                foreach my $tag (@$taglist) {
2933                        $ctags->{$tag}++;
2934                }
2935        }
2936
2937        return $ctags;
2938}
2939
2940# return hash, where keys are content tags ('ctags'),
2941# and values are sum of weights of given tag in every project
2942sub git_gather_all_ctags {
2943        my $projects = shift;
2944        my $ctags = {};
2945
2946        foreach my $p (@$projects) {
2947                foreach my $ct (keys %{$p->{'ctags'}}) {
2948                        $ctags->{$ct} += $p->{'ctags'}->{$ct};
2949                }
2950        }
2951
2952        return $ctags;
2953}
2954
2955sub git_populate_project_tagcloud {
2956        my $ctags = shift;
2957
2958        # First, merge different-cased tags; tags vote on casing
2959        my %ctags_lc;
2960        foreach (keys %$ctags) {
2961                $ctags_lc{lc $_}->{count} += $ctags->{$_};
2962                if (not $ctags_lc{lc $_}->{topcount}
2963                    or $ctags_lc{lc $_}->{topcount} < $ctags->{$_}) {
2964                        $ctags_lc{lc $_}->{topcount} = $ctags->{$_};
2965                        $ctags_lc{lc $_}->{topname} = $_;
2966                }
2967        }
2968
2969        my $cloud;
2970        my $matched = $input_params{'ctag'};
2971        if (eval { require HTML::TagCloud; 1; }) {
2972                $cloud = HTML::TagCloud->new;
2973                foreach my $ctag (sort keys %ctags_lc) {
2974                        # Pad the title with spaces so that the cloud looks
2975                        # less crammed.
2976                        my $title = esc_html($ctags_lc{$ctag}->{topname});
2977                        $title =~ s/ /&nbsp;/g;
2978                        $title =~ s/^/&nbsp;/g;
2979                        $title =~ s/$/&nbsp;/g;
2980                        if (defined $matched && $matched eq $ctag) {
2981                                $title = qq(<span class="match">$title</span>);
2982                        }
2983                        $cloud->add($title, href(project=>undef, ctag=>$ctag),
2984                                    $ctags_lc{$ctag}->{count});
2985                }
2986        } else {
2987                $cloud = {};
2988                foreach my $ctag (keys %ctags_lc) {
2989                        my $title = esc_html($ctags_lc{$ctag}->{topname}, -nbsp=>1);
2990                        if (defined $matched && $matched eq $ctag) {
2991                                $title = qq(<span class="match">$title</span>);
2992                        }
2993                        $cloud->{$ctag}{count} = $ctags_lc{$ctag}->{count};
2994                        $cloud->{$ctag}{ctag} =
2995                                $cgi->a({-href=>href(project=>undef, ctag=>$ctag)}, $title);
2996                }
2997        }
2998        return $cloud;
2999}
3000
3001sub git_show_project_tagcloud {
3002        my ($cloud, $count) = @_;
3003        if (ref $cloud eq 'HTML::TagCloud') {
3004                return $cloud->html_and_css($count);
3005        } else {
3006                my @tags = sort { $cloud->{$a}->{'count'} <=> $cloud->{$b}->{'count'} } keys %$cloud;
3007                return
3008                        '<div id="htmltagcloud"'.($project ? '' : ' align="center"').'>' .
3009                        join (', ', map {
3010                                $cloud->{$_}->{'ctag'}
3011                        } splice(@tags, 0, $count)) .
3012                        '</div>';
3013        }
3014}
3015
3016sub git_get_project_url_list {
3017        my $path = shift;
3018
3019        $git_dir = "$projectroot/$path";
3020        open my $fd, '<', "$git_dir/cloneurl"
3021                or return wantarray ?
3022                @{ config_to_multi(git_get_project_config('url')) } :
3023                   config_to_multi(git_get_project_config('url'));
3024        my @git_project_url_list = map { chomp; $_ } <$fd>;
3025        close $fd;
3026
3027        return wantarray ? @git_project_url_list : \@git_project_url_list;
3028}
3029
3030sub git_get_projects_list {
3031        my $filter = shift || '';
3032        my $paranoid = shift;
3033        my @list;
3034
3035        if (-d $projects_list) {
3036                # search in directory
3037                my $dir = $projects_list;
3038                # remove the trailing "/"
3039                $dir =~ s!/+$!!;
3040                my $pfxlen = length("$dir");
3041                my $pfxdepth = ($dir =~ tr!/!!);
3042                # when filtering, search only given subdirectory
3043                if ($filter && !$paranoid) {
3044                        $dir .= "/$filter";
3045                        $dir =~ s!/+$!!;
3046                }
3047
3048                File::Find::find({
3049                        follow_fast => 1, # follow symbolic links
3050                        follow_skip => 2, # ignore duplicates
3051                        dangling_symlinks => 0, # ignore dangling symlinks, silently
3052                        wanted => sub {
3053                                # global variables
3054                                our $project_maxdepth;
3055                                our $projectroot;
3056                                # skip project-list toplevel, if we get it.
3057                                return if (m!^[/.]$!);
3058                                # only directories can be git repositories
3059                                return unless (-d $_);
3060                                # don't traverse too deep (Find is super slow on os x)
3061                                # $project_maxdepth excludes depth of $projectroot
3062                                if (($File::Find::name =~ tr!/!!) - $pfxdepth > $project_maxdepth) {
3063                                        $File::Find::prune = 1;
3064                                        return;
3065                                }
3066
3067                                my $path = substr($File::Find::name, $pfxlen + 1);
3068                                # paranoidly only filter here
3069                                if ($paranoid && $filter && $path !~ m!^\Q$filter\E/!) {
3070                                        next;
3071                                }
3072                                # we check related file in $projectroot
3073                                if (check_export_ok("$projectroot/$path")) {
3074                                        push @list, { path => $path };
3075                                        $File::Find::prune = 1;
3076                                }
3077                        },
3078                }, "$dir");
3079
3080        } elsif (-f $projects_list) {
3081                # read from file(url-encoded):
3082                # 'git%2Fgit.git Linus+Torvalds'
3083                # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
3084                # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
3085                open my $fd, '<', $projects_list or return;
3086        PROJECT:
3087                while (my $line = <$fd>) {
3088                        chomp $line;
3089                        my ($path, $owner) = split ' ', $line;
3090                        $path = unescape($path);
3091                        $owner = unescape($owner);
3092                        if (!defined $path) {
3093                                next;
3094                        }
3095                        # if $filter is rpovided, check if $path begins with $filter
3096                        if ($filter && $path !~ m!^\Q$filter\E/!) {
3097                                next;
3098                        }
3099                        if (check_export_ok("$projectroot/$path")) {
3100                                my $pr = {
3101                                        path => $path
3102                                };
3103                                if ($owner) {
3104                                        $pr->{'owner'} = to_utf8($owner);
3105                                }
3106                                push @list, $pr;
3107                        }
3108                }
3109                close $fd;
3110        }
3111        return @list;
3112}
3113
3114# written with help of Tree::Trie module (Perl Artistic License, GPL compatibile)
3115# as side effects it sets 'forks' field to list of forks for forked projects
3116sub filter_forks_from_projects_list {
3117        my $projects = shift;
3118
3119        my %trie; # prefix tree of directories (path components)
3120        # generate trie out of those directories that might contain forks
3121        foreach my $pr (@$projects) {
3122                my $path = $pr->{'path'};
3123                $path =~ s/\.git$//;      # forks of 'repo.git' are in 'repo/' directory
3124                next if ($path =~ m!/$!); # skip non-bare repositories, e.g. 'repo/.git'
3125                next unless ($path);      # skip '.git' repository: tests, git-instaweb
3126                next unless (-d "$projectroot/$path"); # containing directory exists
3127                $pr->{'forks'} = [];      # there can be 0 or more forks of project
3128
3129                # add to trie
3130                my @dirs = split('/', $path);
3131                # walk the trie, until either runs out of components or out of trie
3132                my $ref = \%trie;
3133                while (scalar @dirs &&
3134                       exists($ref->{$dirs[0]})) {
3135                        $ref = $ref->{shift @dirs};
3136                }
3137                # create rest of trie structure from rest of components
3138                foreach my $dir (@dirs) {
3139                        $ref = $ref->{$dir} = {};
3140                }
3141                # create end marker, store $pr as a data
3142                $ref->{''} = $pr if (!exists $ref->{''});
3143        }
3144
3145        # filter out forks, by finding shortest prefix match for paths
3146        my @filtered;
3147 PROJECT:
3148        foreach my $pr (@$projects) {
3149                # trie lookup
3150                my $ref = \%trie;
3151        DIR:
3152                foreach my $dir (split('/', $pr->{'path'})) {
3153                        if (exists $ref->{''}) {
3154                                # found [shortest] prefix, is a fork - skip it
3155                                push @{$ref->{''}{'forks'}}, $pr;
3156                                next PROJECT;
3157                        }
3158                        if (!exists $ref->{$dir}) {
3159                                # not in trie, cannot have prefix, not a fork
3160                                push @filtered, $pr;
3161                                next PROJECT;
3162                        }
3163                        # If the dir is there, we just walk one step down the trie.
3164                        $ref = $ref->{$dir};
3165                }
3166                # we ran out of trie
3167                # (shouldn't happen: it's either no match, or end marker)
3168                push @filtered, $pr;
3169        }
3170
3171        return @filtered;
3172}
3173
3174# note: fill_project_list_info must be run first,
3175# for 'descr_long' and 'ctags' to be filled
3176sub search_projects_list {
3177        my ($projlist, %opts) = @_;
3178        my $tagfilter  = $opts{'tagfilter'};
3179        my $search_re = $opts{'search_regexp'};
3180
3181        return @$projlist
3182                unless ($tagfilter || $search_re);
3183
3184        # searching projects require filling to be run before it;
3185        fill_project_list_info($projlist,
3186                               $tagfilter  ? 'ctags' : (),
3187                               $search_re ? ('path', 'descr') : ());
3188        my @projects;
3189 PROJECT:
3190        foreach my $pr (@$projlist) {
3191
3192                if ($tagfilter) {
3193                        next unless ref($pr->{'ctags'}) eq 'HASH';
3194                        next unless
3195                                grep { lc($_) eq lc($tagfilter) } keys %{$pr->{'ctags'}};
3196                }
3197
3198                if ($search_re) {
3199                        next unless
3200                                $pr->{'path'} =~ /$search_re/ ||
3201                                $pr->{'descr_long'} =~ /$search_re/;
3202                }
3203
3204                push @projects, $pr;
3205        }
3206
3207        return @projects;
3208}
3209
3210our $gitweb_project_owner = undef;
3211sub git_get_project_list_from_file {
3212
3213        return if (defined $gitweb_project_owner);
3214
3215        $gitweb_project_owner = {};
3216        # read from file (url-encoded):
3217        # 'git%2Fgit.git Linus+Torvalds'
3218        # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
3219        # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
3220        if (-f $projects_list) {
3221                open(my $fd, '<', $projects_list);
3222                while (my $line = <$fd>) {
3223                        chomp $line;
3224                        my ($pr, $ow) = split ' ', $line;
3225                        $pr = unescape($pr);
3226                        $ow = unescape($ow);
3227                        $gitweb_project_owner->{$pr} = to_utf8($ow);
3228                }
3229                close $fd;
3230        }
3231}
3232
3233sub git_get_project_owner {
3234        my $project = shift;
3235        my $owner;
3236
3237        return undef unless $project;
3238        $git_dir = "$projectroot/$project";
3239
3240        if (!defined $gitweb_project_owner) {
3241                git_get_project_list_from_file();
3242        }
3243
3244        if (exists $gitweb_project_owner->{$project}) {
3245                $owner = $gitweb_project_owner->{$project};
3246        }
3247        if (!defined $owner){
3248                $owner = git_get_project_config('owner');
3249        }
3250        if (!defined $owner) {
3251                $owner = get_file_owner("$git_dir");
3252        }
3253
3254        return $owner;
3255}
3256
3257sub git_get_last_activity {
3258        my ($path) = @_;
3259        my $fd;
3260
3261        $git_dir = "$projectroot/$path";
3262        open($fd, "-|", git_cmd(), 'for-each-ref',
3263             '--format=%(committer)',
3264             '--sort=-committerdate',
3265             '--count=1',
3266             map { "refs/$_" } get_branch_refs ()) or return;
3267        my $most_recent = <$fd>;
3268        close $fd or return;
3269        if (defined $most_recent &&
3270            $most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
3271                my $timestamp = $1;
3272                my $age = time - $timestamp;
3273                return ($age, age_string($age));
3274        }
3275        return (undef, undef);
3276}
3277
3278# Implementation note: when a single remote is wanted, we cannot use 'git
3279# remote show -n' because that command always work (assuming it's a remote URL
3280# if it's not defined), and we cannot use 'git remote show' because that would
3281# try to make a network roundtrip. So the only way to find if that particular
3282# remote is defined is to walk the list provided by 'git remote -v' and stop if
3283# and when we find what we want.
3284sub git_get_remotes_list {
3285        my $wanted = shift;
3286        my %remotes = ();
3287
3288        open my $fd, '-|' , git_cmd(), 'remote', '-v';
3289        return unless $fd;
3290        while (my $remote = <$fd>) {
3291                chomp $remote;
3292                $remote =~ s!\t(.*?)\s+\((\w+)\)$!!;
3293                next if $wanted and not $remote eq $wanted;
3294                my ($url, $key) = ($1, $2);
3295
3296                $remotes{$remote} ||= { 'heads' => () };
3297                $remotes{$remote}{$key} = $url;
3298        }
3299        close $fd or return;
3300        return wantarray ? %remotes : \%remotes;
3301}
3302
3303# Takes a hash of remotes as first parameter and fills it by adding the
3304# available remote heads for each of the indicated remotes.
3305sub fill_remote_heads {
3306        my $remotes = shift;
3307        my @heads = map { "remotes/$_" } keys %$remotes;
3308        my @remoteheads = git_get_heads_list(undef, @heads);
3309        foreach my $remote (keys %$remotes) {
3310                $remotes->{$remote}{'heads'} = [ grep {
3311                        $_->{'name'} =~ s!^$remote/!!
3312                        } @remoteheads ];
3313        }
3314}
3315
3316sub git_get_references {
3317        my $type = shift || "";
3318        my %refs;
3319        # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
3320        # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
3321        open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
3322                ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
3323                or return;
3324
3325        while (my $line = <$fd>) {
3326                chomp $line;
3327                if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type.*)$!) {
3328                        if (defined $refs{$1}) {
3329                                push @{$refs{$1}}, $2;
3330                        } else {
3331                                $refs{$1} = [ $2 ];
3332                        }
3333                }
3334        }
3335        close $fd or return;
3336        return \%refs;
3337}
3338
3339sub git_get_rev_name_tags {
3340        my $hash = shift || return undef;
3341
3342        open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
3343                or return;
3344        my $name_rev = <$fd>;
3345        close $fd;
3346
3347        if ($name_rev =~ m|^$hash tags/(.*)$|) {
3348                return $1;
3349        } else {
3350                # catches also '$hash undefined' output
3351                return undef;
3352        }
3353}
3354
3355## ----------------------------------------------------------------------
3356## parse to hash functions
3357
3358sub parse_date {
3359        my $epoch = shift;
3360        my $tz = shift || "-0000";
3361
3362        my %date;
3363        my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
3364        my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
3365        my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
3366        $date{'hour'} = $hour;
3367        $date{'minute'} = $min;
3368        $date{'mday'} = $mday;
3369        $date{'day'} = $days[$wday];
3370        $date{'month'} = $months[$mon];
3371        $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
3372                             $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
3373        $date{'mday-time'} = sprintf "%d %s %02d:%02d",
3374                             $mday, $months[$mon], $hour ,$min;
3375        $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
3376                             1900+$year, 1+$mon, $mday, $hour ,$min, $sec;
3377
3378        my ($tz_sign, $tz_hour, $tz_min) =
3379                ($tz =~ m/^([-+])(\d\d)(\d\d)$/);
3380        $tz_sign = ($tz_sign eq '-' ? -1 : +1);
3381        my $local = $epoch + $tz_sign*((($tz_hour*60) + $tz_min)*60);
3382        ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
3383        $date{'hour_local'} = $hour;
3384        $date{'minute_local'} = $min;
3385        $date{'tz_local'} = $tz;
3386        $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
3387                                  1900+$year, $mon+1, $mday,
3388                                  $hour, $min, $sec, $tz);
3389        return %date;
3390}
3391
3392sub parse_tag {
3393        my $tag_id = shift;
3394        my %tag;
3395        my @comment;
3396
3397        open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
3398        $tag{'id'} = $tag_id;
3399        while (my $line = <$fd>) {
3400                chomp $line;
3401                if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
3402                        $tag{'object'} = $1;
3403                } elsif ($line =~ m/^type (.+)$/) {
3404                        $tag{'type'} = $1;
3405                } elsif ($line =~ m/^tag (.+)$/) {
3406                        $tag{'name'} = $1;
3407                } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
3408                        $tag{'author'} = $1;
3409                        $tag{'author_epoch'} = $2;
3410                        $tag{'author_tz'} = $3;
3411                        if ($tag{'author'} =~ m/^([^<]+) <([^>]*)>/) {
3412                                $tag{'author_name'}  = $1;
3413                                $tag{'author_email'} = $2;
3414                        } else {
3415                                $tag{'author_name'} = $tag{'author'};
3416                        }
3417                } elsif ($line =~ m/--BEGIN/) {
3418                        push @comment, $line;
3419                        last;
3420                } elsif ($line eq "") {
3421                        last;
3422                }
3423        }
3424        push @comment, <$fd>;
3425        $tag{'comment'} = \@comment;
3426        close $fd or return;
3427        if (!defined $tag{'name'}) {
3428                return
3429        };
3430        return %tag
3431}
3432
3433sub parse_commit_text {
3434        my ($commit_text, $withparents) = @_;
3435        my @commit_lines = split '\n', $commit_text;
3436        my %co;
3437
3438        pop @commit_lines; # Remove '\0'
3439
3440        if (! @commit_lines) {
3441                return;
3442        }
3443
3444        my $header = shift @commit_lines;
3445        if ($header !~ m/^[0-9a-fA-F]{40}/) {
3446                return;
3447        }
3448        ($co{'id'}, my @parents) = split ' ', $header;
3449        while (my $line = shift @commit_lines) {
3450                last if $line eq "\n";
3451                if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
3452                        $co{'tree'} = $1;
3453                } elsif ((!defined $withparents) && ($line =~ m/^parent ([0-9a-fA-F]{40})$/)) {
3454                        push @parents, $1;
3455                } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
3456                        $co{'author'} = to_utf8($1);
3457                        $co{'author_epoch'} = $2;
3458                        $co{'author_tz'} = $3;
3459                        if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
3460                                $co{'author_name'}  = $1;
3461                                $co{'author_email'} = $2;
3462                        } else {
3463                                $co{'author_name'} = $co{'author'};
3464                        }
3465                } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
3466                        $co{'committer'} = to_utf8($1);
3467                        $co{'committer_epoch'} = $2;
3468                        $co{'committer_tz'} = $3;
3469                        if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
3470                                $co{'committer_name'}  = $1;
3471                                $co{'committer_email'} = $2;
3472                        } else {
3473                                $co{'committer_name'} = $co{'committer'};
3474                        }
3475                }
3476        }
3477        if (!defined $co{'tree'}) {
3478                return;
3479        };
3480        $co{'parents'} = \@parents;
3481        $co{'parent'} = $parents[0];
3482
3483        foreach my $title (@commit_lines) {
3484                $title =~ s/^    //;
3485                if ($title ne "") {
3486                        $co{'title'} = chop_str($title, 80, 5);
3487                        # remove leading stuff of merges to make the interesting part visible
3488                        if (length($title) > 50) {
3489                                $title =~ s/^Automatic //;
3490                                $title =~ s/^merge (of|with) /Merge ... /i;
3491                                if (length($title) > 50) {
3492                                        $title =~ s/(http|rsync):\/\///;
3493                                }
3494                                if (length($title) > 50) {
3495                                        $title =~ s/(master|www|rsync)\.//;
3496                                }
3497                                if (length($title) > 50) {
3498                                        $title =~ s/kernel.org:?//;
3499                                }
3500                                if (length($title) > 50) {
3501                                        $title =~ s/\/pub\/scm//;
3502                                }
3503                        }
3504                        $co{'title_short'} = chop_str($title, 50, 5);
3505                        last;
3506                }
3507        }
3508        if (! defined $co{'title'} || $co{'title'} eq "") {
3509                $co{'title'} = $co{'title_short'} = '(no commit message)';
3510        }
3511        # remove added spaces
3512        foreach my $line (@commit_lines) {
3513                $line =~ s/^    //;
3514        }
3515        $co{'comment'} = \@commit_lines;
3516
3517        my $age = time - $co{'committer_epoch'};
3518        $co{'age'} = $age;
3519        $co{'age_string'} = age_string($age);
3520        my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
3521        if ($age > 60*60*24*7*2) {
3522                $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
3523                $co{'age_string_age'} = $co{'age_string'};
3524        } else {
3525                $co{'age_string_date'} = $co{'age_string'};
3526                $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
3527        }
3528        return %co;
3529}
3530
3531sub parse_commit {
3532        my ($commit_id) = @_;
3533        my %co;
3534
3535        local $/ = "\0";
3536
3537        open my $fd, "-|", git_cmd(), "rev-list",
3538                "--parents",
3539                "--header",
3540                "--max-count=1",
3541                $commit_id,
3542                "--",
3543                or die_error(500, "Open git-rev-list failed");
3544        %co = parse_commit_text(<$fd>, 1);
3545        close $fd;
3546
3547        return %co;
3548}
3549
3550sub parse_commits {
3551        my ($commit_id, $maxcount, $skip, $filename, @args) = @_;
3552        my @cos;
3553
3554        $maxcount ||= 1;
3555        $skip ||= 0;
3556
3557        local $/ = "\0";
3558
3559        open my $fd, "-|", git_cmd(), "rev-list",
3560                "--header",
3561                @args,
3562                ("--max-count=" . $maxcount),
3563                ("--skip=" . $skip),
3564                @extra_options,
3565                $commit_id,
3566                "--",
3567                ($filename ? ($filename) : ())
3568                or die_error(500, "Open git-rev-list failed");
3569        while (my $line = <$fd>) {
3570                my %co = parse_commit_text($line);
3571                push @cos, \%co;
3572        }
3573        close $fd;
3574
3575        return wantarray ? @cos : \@cos;
3576}
3577
3578# parse line of git-diff-tree "raw" output
3579sub parse_difftree_raw_line {
3580        my $line = shift;
3581        my %res;
3582
3583        # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
3584        # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
3585        if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
3586                $res{'from_mode'} = $1;
3587                $res{'to_mode'} = $2;
3588                $res{'from_id'} = $3;
3589                $res{'to_id'} = $4;
3590                $res{'status'} = $5;
3591                $res{'similarity'} = $6;
3592                if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
3593                        ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
3594                } else {
3595                        $res{'from_file'} = $res{'to_file'} = $res{'file'} = unquote($7);
3596                }
3597        }
3598        # '::100755 100755 100755 60e79ca1b01bc8b057abe17ddab484699a7f5fdb 94067cc5f73388f33722d52ae02f44692bc07490 94067cc5f73388f33722d52ae02f44692bc07490 MR git-gui/git-gui.sh'
3599        # combined diff (for merge commit)
3600        elsif ($line =~ s/^(::+)((?:[0-7]{6} )+)((?:[0-9a-fA-F]{40} )+)([a-zA-Z]+)\t(.*)$//) {
3601                $res{'nparents'}  = length($1);
3602                $res{'from_mode'} = [ split(' ', $2) ];
3603                $res{'to_mode'} = pop @{$res{'from_mode'}};
3604                $res{'from_id'} = [ split(' ', $3) ];
3605                $res{'to_id'} = pop @{$res{'from_id'}};
3606                $res{'status'} = [ split('', $4) ];
3607                $res{'to_file'} = unquote($5);
3608        }
3609        # 'c512b523472485aef4fff9e57b229d9d243c967f'
3610        elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
3611                $res{'commit'} = $1;
3612        }
3613
3614        return wantarray ? %res : \%res;
3615}
3616
3617# wrapper: return parsed line of git-diff-tree "raw" output
3618# (the argument might be raw line, or parsed info)
3619sub parsed_difftree_line {
3620        my $line_or_ref = shift;
3621
3622        if (ref($line_or_ref) eq "HASH") {
3623                # pre-parsed (or generated by hand)
3624                return $line_or_ref;
3625        } else {
3626                return parse_difftree_raw_line($line_or_ref);
3627        }
3628}
3629
3630# parse line of git-ls-tree output
3631sub parse_ls_tree_line {
3632        my $line = shift;
3633        my %opts = @_;
3634        my %res;
3635
3636        if ($opts{'-l'}) {
3637                #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa   16717  panic.c'
3638                $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40}) +(-|[0-9]+)\t(.+)$/s;
3639
3640                $res{'mode'} = $1;
3641                $res{'type'} = $2;
3642                $res{'hash'} = $3;
3643                $res{'size'} = $4;
3644                if ($opts{'-z'}) {
3645                        $res{'name'} = $5;
3646                } else {
3647                        $res{'name'} = unquote($5);
3648                }
3649        } else {
3650                #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
3651                $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
3652
3653                $res{'mode'} = $1;
3654                $res{'type'} = $2;
3655                $res{'hash'} = $3;
3656                if ($opts{'-z'}) {
3657                        $res{'name'} = $4;
3658                } else {
3659                        $res{'name'} = unquote($4);
3660                }
3661        }
3662
3663        return wantarray ? %res : \%res;
3664}
3665
3666# generates _two_ hashes, references to which are passed as 2 and 3 argument
3667sub parse_from_to_diffinfo {
3668        my ($diffinfo, $from, $to, @parents) = @_;
3669
3670        if ($diffinfo->{'nparents'}) {
3671                # combined diff
3672                $from->{'file'} = [];
3673                $from->{'href'} = [];
3674                fill_from_file_info($diffinfo, @parents)
3675                        unless exists $diffinfo->{'from_file'};
3676                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
3677                        $from->{'file'}[$i] =
3678                                defined $diffinfo->{'from_file'}[$i] ?
3679                                        $diffinfo->{'from_file'}[$i] :
3680                                        $diffinfo->{'to_file'};
3681                        if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
3682                                $from->{'href'}[$i] = href(action=>"blob",
3683                                                           hash_base=>$parents[$i],
3684                                                           hash=>$diffinfo->{'from_id'}[$i],
3685                                                           file_name=>$from->{'file'}[$i]);
3686                        } else {
3687                                $from->{'href'}[$i] = undef;
3688                        }
3689                }
3690        } else {
3691                # ordinary (not combined) diff
3692                $from->{'file'} = $diffinfo->{'from_file'};
3693                if ($diffinfo->{'status'} ne "A") { # not new (added) file
3694                        $from->{'href'} = href(action=>"blob", hash_base=>$hash_parent,
3695                                               hash=>$diffinfo->{'from_id'},
3696                                               file_name=>$from->{'file'});
3697                } else {
3698                        delete $from->{'href'};
3699                }
3700        }
3701
3702        $to->{'file'} = $diffinfo->{'to_file'};
3703        if (!is_deleted($diffinfo)) { # file exists in result
3704                $to->{'href'} = href(action=>"blob", hash_base=>$hash,
3705                                     hash=>$diffinfo->{'to_id'},
3706                                     file_name=>$to->{'file'});
3707        } else {
3708                delete $to->{'href'};
3709        }
3710}
3711
3712## ......................................................................
3713## parse to array of hashes functions
3714
3715sub git_get_heads_list {
3716        my ($limit, @classes) = @_;
3717        @classes = get_branch_refs() unless @classes;
3718        my @patterns = map { "refs/$_" } @classes;
3719        my @headslist;
3720
3721        open my $fd, '-|', git_cmd(), 'for-each-ref',
3722                ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
3723                '--format=%(objectname) %(refname) %(subject)%00%(committer)',
3724                @patterns
3725                or return;
3726        while (my $line = <$fd>) {
3727                my %ref_item;
3728
3729                chomp $line;
3730                my ($refinfo, $committerinfo) = split(/\0/, $line);
3731                my ($hash, $name, $title) = split(' ', $refinfo, 3);
3732                my ($committer, $epoch, $tz) =
3733                        ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
3734                $ref_item{'fullname'}  = $name;
3735                my $strip_refs = join '|', map { quotemeta } get_branch_refs();
3736                $name =~ s!^refs/($strip_refs|remotes)/!!;
3737                $ref_item{'name'} = $name;
3738                # for refs neither in 'heads' nor 'remotes' we want to
3739                # show their ref dir
3740                my $ref_dir = (defined $1) ? $1 : '';
3741                if ($ref_dir ne '' and $ref_dir ne 'heads' and $ref_dir ne 'remotes') {
3742                    $ref_item{'name'} .= ' (' . $ref_dir . ')';
3743                }
3744
3745                $ref_item{'id'}    = $hash;
3746                $ref_item{'title'} = $title || '(no commit message)';
3747                $ref_item{'epoch'} = $epoch;
3748                if ($epoch) {
3749                        $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
3750                } else {
3751                        $ref_item{'age'} = "unknown";
3752                }
3753
3754                push @headslist, \%ref_item;
3755        }
3756        close $fd;
3757
3758        return wantarray ? @headslist : \@headslist;
3759}
3760
3761sub git_get_tags_list {
3762        my $limit = shift;
3763        my @tagslist;
3764
3765        open my $fd, '-|', git_cmd(), 'for-each-ref',
3766                ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
3767                '--format=%(objectname) %(objecttype) %(refname) '.
3768                '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
3769                'refs/tags'
3770                or return;
3771        while (my $line = <$fd>) {
3772                my %ref_item;
3773
3774                chomp $line;
3775                my ($refinfo, $creatorinfo) = split(/\0/, $line);
3776                my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
3777                my ($creator, $epoch, $tz) =
3778                        ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
3779                $ref_item{'fullname'} = $name;
3780                $name =~ s!^refs/tags/!!;
3781
3782                $ref_item{'type'} = $type;
3783                $ref_item{'id'} = $id;
3784                $ref_item{'name'} = $name;
3785                if ($type eq "tag") {
3786                        $ref_item{'subject'} = $title;
3787                        $ref_item{'reftype'} = $reftype;
3788                        $ref_item{'refid'}   = $refid;
3789                } else {
3790                        $ref_item{'reftype'} = $type;
3791                        $ref_item{'refid'}   = $id;
3792                }
3793
3794                if ($type eq "tag" || $type eq "commit") {
3795                        $ref_item{'epoch'} = $epoch;
3796                        if ($epoch) {
3797                                $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
3798                        } else {
3799                                $ref_item{'age'} = "unknown";
3800                        }
3801                }
3802
3803                push @tagslist, \%ref_item;
3804        }
3805        close $fd;
3806
3807        return wantarray ? @tagslist : \@tagslist;
3808}
3809
3810## ----------------------------------------------------------------------
3811## filesystem-related functions
3812
3813sub get_file_owner {
3814        my $path = shift;
3815
3816        my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
3817        my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
3818        if (!defined $gcos) {
3819                return undef;
3820        }
3821        my $owner = $gcos;
3822        $owner =~ s/[,;].*$//;
3823        return to_utf8($owner);
3824}
3825
3826# assume that file exists
3827sub insert_file {
3828        my $filename = shift;
3829
3830        open my $fd, '<', $filename;
3831        print map { to_utf8($_) } <$fd>;
3832        close $fd;
3833}
3834
3835## ......................................................................
3836## mimetype related functions
3837
3838sub mimetype_guess_file {
3839        my $filename = shift;
3840        my $mimemap = shift;
3841        -r $mimemap or return undef;
3842
3843        my %mimemap;
3844        open(my $mh, '<', $mimemap) or return undef;
3845        while (<$mh>) {
3846                next if m/^#/; # skip comments
3847                my ($mimetype, @exts) = split(/\s+/);
3848                foreach my $ext (@exts) {
3849                        $mimemap{$ext} = $mimetype;
3850                }
3851        }
3852        close($mh);
3853
3854        $filename =~ /\.([^.]*)$/;
3855        return $mimemap{$1};
3856}
3857
3858sub mimetype_guess {
3859        my $filename = shift;
3860        my $mime;
3861        $filename =~ /\./ or return undef;
3862
3863        if ($mimetypes_file) {
3864                my $file = $mimetypes_file;
3865                if ($file !~ m!^/!) { # if it is relative path
3866                        # it is relative to project
3867                        $file = "$projectroot/$project/$file";
3868                }
3869                $mime = mimetype_guess_file($filename, $file);
3870        }
3871        $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
3872        return $mime;
3873}
3874
3875sub blob_mimetype {
3876        my $fd = shift;
3877        my $filename = shift;
3878
3879        if ($filename) {
3880                my $mime = mimetype_guess($filename);
3881                $mime and return $mime;
3882        }
3883
3884        # just in case
3885        return $default_blob_plain_mimetype unless $fd;
3886
3887        if (-T $fd) {
3888                return 'text/plain';
3889        } elsif (! $filename) {
3890                return 'application/octet-stream';
3891        } elsif ($filename =~ m/\.png$/i) {
3892                return 'image/png';
3893        } elsif ($filename =~ m/\.gif$/i) {
3894                return 'image/gif';
3895        } elsif ($filename =~ m/\.jpe?g$/i) {
3896                return 'image/jpeg';
3897        } else {
3898                return 'application/octet-stream';
3899        }
3900}
3901
3902sub blob_contenttype {
3903        my ($fd, $file_name, $type) = @_;
3904
3905        $type ||= blob_mimetype($fd, $file_name);
3906        if ($type eq 'text/plain' && defined $default_text_plain_charset) {
3907                $type .= "; charset=$default_text_plain_charset";
3908        }
3909
3910        return $type;
3911}
3912
3913# guess file syntax for syntax highlighting; return undef if no highlighting
3914# the name of syntax can (in the future) depend on syntax highlighter used
3915sub guess_file_syntax {
3916        my ($highlight, $mimetype, $file_name) = @_;
3917        return undef unless ($highlight && defined $file_name);
3918        my $basename = basename($file_name, '.in');
3919        return $highlight_basename{$basename}
3920                if exists $highlight_basename{$basename};
3921
3922        $basename =~ /\.([^.]*)$/;
3923        my $ext = $1 or return undef;
3924        return $highlight_ext{$ext}
3925                if exists $highlight_ext{$ext};
3926
3927        return undef;
3928}
3929
3930# run highlighter and return FD of its output,
3931# or return original FD if no highlighting
3932sub run_highlighter {
3933        my ($fd, $highlight, $syntax) = @_;
3934        return $fd unless ($highlight && defined $syntax);
3935
3936        close $fd;
3937        open $fd, quote_command(git_cmd(), "cat-file", "blob", $hash)." | ".
3938                  quote_command($^X, '-CO', '-MEncode=decode,FB_DEFAULT', '-pse',
3939                    '$_ = decode($fe, $_, FB_DEFAULT) if !utf8::decode($_);',
3940                    '--', "-fe=$fallback_encoding")." | ".
3941                  quote_command($highlight_bin).
3942                  " --replace-tabs=8 --fragment --syntax $syntax |"
3943                or die_error(500, "Couldn't open file or run syntax highlighter");
3944        return $fd;
3945}
3946
3947## ======================================================================
3948## functions printing HTML: header, footer, error page
3949
3950sub get_page_title {
3951        my $title = to_utf8($site_name);
3952
3953        unless (defined $project) {
3954                if (defined $project_filter) {
3955                        $title .= " - projects in '" . esc_path($project_filter) . "'";
3956                }
3957                return $title;
3958        }
3959        $title .= " - " . to_utf8($project);
3960
3961        return $title unless (defined $action);
3962        $title .= "/$action"; # $action is US-ASCII (7bit ASCII)
3963
3964        return $title unless (defined $file_name);
3965        $title .= " - " . esc_path($file_name);
3966        if ($action eq "tree" && $file_name !~ m|/$|) {
3967                $title .= "/";
3968        }
3969
3970        return $title;
3971}
3972
3973sub get_content_type_html {
3974        # require explicit support from the UA if we are to send the page as
3975        # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
3976        # we have to do this because MSIE sometimes globs '*/*', pretending to
3977        # support xhtml+xml but choking when it gets what it asked for.
3978        if (defined $cgi->http('HTTP_ACCEPT') &&
3979            $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
3980            $cgi->Accept('application/xhtml+xml') != 0) {
3981                return 'application/xhtml+xml';
3982        } else {
3983                return 'text/html';
3984        }
3985}
3986
3987sub print_feed_meta {
3988        if (defined $project) {
3989                my %href_params = get_feed_info();
3990                if (!exists $href_params{'-title'}) {
3991                        $href_params{'-title'} = 'log';
3992                }
3993
3994                foreach my $format (qw(RSS Atom)) {
3995                        my $type = lc($format);
3996                        my %link_attr = (
3997                                '-rel' => 'alternate',
3998                                '-title' => esc_attr("$project - $href_params{'-title'} - $format feed"),
3999                                '-type' => "application/$type+xml"
4000                        );
4001
4002                        $href_params{'extra_options'} = undef;
4003                        $href_params{'action'} = $type;
4004                        $link_attr{'-href'} = href(%href_params);
4005                        print "<link ".
4006                              "rel=\"$link_attr{'-rel'}\" ".
4007                              "title=\"$link_attr{'-title'}\" ".
4008                              "href=\"$link_attr{'-href'}\" ".
4009                              "type=\"$link_attr{'-type'}\" ".
4010                              "/>\n";
4011
4012                        $href_params{'extra_options'} = '--no-merges';
4013                        $link_attr{'-href'} = href(%href_params);
4014                        $link_attr{'-title'} .= ' (no merges)';
4015                        print "<link ".
4016                              "rel=\"$link_attr{'-rel'}\" ".
4017                              "title=\"$link_attr{'-title'}\" ".
4018                              "href=\"$link_attr{'-href'}\" ".
4019                              "type=\"$link_attr{'-type'}\" ".
4020                              "/>\n";
4021                }
4022
4023        } else {
4024                printf('<link rel="alternate" title="%s projects list" '.
4025                       'href="%s" type="text/plain; charset=utf-8" />'."\n",
4026                       esc_attr($site_name), href(project=>undef, action=>"project_index"));
4027                printf('<link rel="alternate" title="%s projects feeds" '.
4028                       'href="%s" type="text/x-opml" />'."\n",
4029                       esc_attr($site_name), href(project=>undef, action=>"opml"));
4030        }
4031}
4032
4033sub print_header_links {
4034        my $status = shift;
4035
4036        # print out each stylesheet that exist, providing backwards capability
4037        # for those people who defined $stylesheet in a config file
4038        if (defined $stylesheet) {
4039                print '<link rel="stylesheet" type="text/css" href="'.esc_url($stylesheet).'"/>'."\n";
4040        } else {
4041                foreach my $stylesheet (@stylesheets) {
4042                        next unless $stylesheet;
4043                        print '<link rel="stylesheet" type="text/css" href="'.esc_url($stylesheet).'"/>'."\n";
4044                }
4045        }
4046        print_feed_meta()
4047                if ($status eq '200 OK');
4048        if (defined $favicon) {
4049                print qq(<link rel="shortcut icon" href=").esc_url($favicon).qq(" type="image/png" />\n);
4050        }
4051}
4052
4053sub print_nav_breadcrumbs_path {
4054        my $dirprefix = undef;
4055        while (my $part = shift) {
4056                $dirprefix .= "/" if defined $dirprefix;
4057                $dirprefix .= $part;
4058                print $cgi->a({-href => href(project => undef,
4059                                             project_filter => $dirprefix,
4060                                             action => "project_list")},
4061                              esc_html($part)) . " / ";
4062        }
4063}
4064
4065sub print_nav_breadcrumbs {
4066        my %opts = @_;
4067
4068        for my $crumb (@extra_breadcrumbs, [ $home_link_str => $home_link ]) {
4069                print $cgi->a({-href => esc_url($crumb->[1])}, $crumb->[0]) . " / ";
4070        }
4071        if (defined $project) {
4072                my @dirname = split '/', $project;
4073                my $projectbasename = pop @dirname;
4074                print_nav_breadcrumbs_path(@dirname);
4075                print $cgi->a({-href => href(action=>"summary")}, esc_html($projectbasename));
4076                if (defined $action) {
4077                        my $action_print = $action ;
4078                        if (defined $opts{-action_extra}) {
4079                                $action_print = $cgi->a({-href => href(action=>$action)},
4080                                        $action);
4081                        }
4082                        print " / $action_print";
4083                }
4084                if (defined $opts{-action_extra}) {
4085                        print " / $opts{-action_extra}";
4086                }
4087                print "\n";
4088        } elsif (defined $project_filter) {
4089                print_nav_breadcrumbs_path(split '/', $project_filter);
4090        }
4091}
4092
4093sub print_search_form {
4094        if (!defined $searchtext) {
4095                $searchtext = "";
4096        }
4097        my $search_hash;
4098        if (defined $hash_base) {
4099                $search_hash = $hash_base;
4100        } elsif (defined $hash) {
4101                $search_hash = $hash;
4102        } else {
4103                $search_hash = "HEAD";
4104        }
4105        my $action = $my_uri;
4106        my $use_pathinfo = gitweb_check_feature('pathinfo');
4107        if ($use_pathinfo) {
4108                $action .= "/".esc_url($project);
4109        }
4110        print $cgi->start_form(-method => "get", -action => $action) .
4111              "<div class=\"search\">\n" .
4112              (!$use_pathinfo &&
4113              $cgi->input({-name=>"p", -value=>$project, -type=>"hidden"}) . "\n") .
4114              $cgi->input({-name=>"a", -value=>"search", -type=>"hidden"}) . "\n" .
4115              $cgi->input({-name=>"h", -value=>$search_hash, -type=>"hidden"}) . "\n" .
4116              $cgi->popup_menu(-name => 'st', -default => 'commit',
4117                               -values => ['commit', 'grep', 'author', 'committer', 'pickaxe']) .
4118              " " . $cgi->a({-href => href(action=>"search_help"),
4119                             -title => "search help" }, "?") . " search:\n",
4120              $cgi->textfield(-name => "s", -value => $searchtext, -override => 1) . "\n" .
4121              "<span title=\"Extended regular expression\">" .
4122              $cgi->checkbox(-name => 'sr', -value => 1, -label => 're',
4123                             -checked => $search_use_regexp) .
4124              "</span>" .
4125              "</div>" .
4126              $cgi->end_form() . "\n";
4127}
4128
4129sub git_header_html {
4130        my $status = shift || "200 OK";
4131        my $expires = shift;
4132        my %opts = @_;
4133
4134        my $title = get_page_title();
4135        my $content_type = get_content_type_html();
4136        print $cgi->header(-type=>$content_type, -charset => 'utf-8',
4137                           -status=> $status, -expires => $expires)
4138                unless ($opts{'-no_http_header'});
4139        my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
4140        print <<EOF;
4141<?xml version="1.0" encoding="utf-8"?>
4142<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
4143<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
4144<!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
4145<!-- git core binaries version $git_version -->
4146<head>
4147<meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
4148<meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
4149<meta name="robots" content="index, nofollow"/>
4150<title>$title</title>
4151EOF
4152        # the stylesheet, favicon etc urls won't work correctly with path_info
4153        # unless we set the appropriate base URL
4154        if ($ENV{'PATH_INFO'}) {
4155                print "<base href=\"".esc_url($base_url)."\" />\n";
4156        }
4157        print_header_links($status);
4158
4159        if (defined $site_html_head_string) {
4160                print to_utf8($site_html_head_string);
4161        }
4162
4163        print "</head>\n" .
4164              "<body>\n";
4165
4166        if (defined $site_header && -f $site_header) {
4167                insert_file($site_header);
4168        }
4169
4170        print "<div class=\"page_header\">\n";
4171        if (defined $logo) {
4172                print $cgi->a({-href => esc_url($logo_url),
4173                               -title => $logo_label},
4174                              $cgi->img({-src => esc_url($logo),
4175                                         -width => 72, -height => 27,
4176                                         -alt => "git",
4177                                         -class => "logo"}));
4178        }
4179        print_nav_breadcrumbs(%opts);
4180        print "</div>\n";
4181
4182        my $have_search = gitweb_check_feature('search');
4183        if (defined $project && $have_search) {
4184                print_search_form();
4185        }
4186}
4187
4188sub git_footer_html {
4189        my $feed_class = 'rss_logo';
4190
4191        print "<div class=\"page_footer\">\n";
4192        if (defined $project) {
4193                my $descr = git_get_project_description($project);
4194                if (defined $descr) {
4195                        print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
4196                }
4197
4198                my %href_params = get_feed_info();
4199                if (!%href_params) {
4200                        $feed_class .= ' generic';
4201                }
4202                $href_params{'-title'} ||= 'log';
4203
4204                foreach my $format (qw(RSS Atom)) {
4205                        $href_params{'action'} = lc($format);
4206                        print $cgi->a({-href => href(%href_params),
4207                                      -title => "$href_params{'-title'} $format feed",
4208                                      -class => $feed_class}, $format)."\n";
4209                }
4210
4211        } else {
4212                print $cgi->a({-href => href(project=>undef, action=>"opml",
4213                                             project_filter => $project_filter),
4214                              -class => $feed_class}, "OPML") . " ";
4215                print $cgi->a({-href => href(project=>undef, action=>"project_index",
4216                                             project_filter => $project_filter),
4217                              -class => $feed_class}, "TXT") . "\n";
4218        }
4219        print "</div>\n"; # class="page_footer"
4220
4221        if (defined $t0 && gitweb_check_feature('timed')) {
4222                print "<div id=\"generating_info\">\n";
4223                print 'This page took '.
4224                      '<span id="generating_time" class="time_span">'.
4225                      tv_interval($t0, [ gettimeofday() ]).
4226                      ' seconds </span>'.
4227                      ' and '.
4228                      '<span id="generating_cmd">'.
4229                      $number_of_git_cmds.
4230                      '</span> git commands '.
4231                      " to generate.\n";
4232                print "</div>\n"; # class="page_footer"
4233        }
4234
4235        if (defined $site_footer && -f $site_footer) {
4236                insert_file($site_footer);
4237        }
4238
4239        print qq!<script type="text/javascript" src="!.esc_url($javascript).qq!"></script>\n!;
4240        if (defined $action &&
4241            $action eq 'blame_incremental') {
4242                print qq!<script type="text/javascript">\n!.
4243                      qq!startBlame("!. href(action=>"blame_data", -replay=>1) .qq!",\n!.
4244                      qq!           "!. href() .qq!");\n!.
4245                      qq!</script>\n!;
4246        } else {
4247                my ($jstimezone, $tz_cookie, $datetime_class) =
4248                        gitweb_get_feature('javascript-timezone');
4249
4250                print qq!<script type="text/javascript">\n!.
4251                      qq!window.onload = function () {\n!;
4252                if (gitweb_check_feature('javascript-actions')) {
4253                        print qq!       fixLinks();\n!;
4254                }
4255                if ($jstimezone && $tz_cookie && $datetime_class) {
4256                        print qq!       var tz_cookie = { name: '$tz_cookie', expires: 14, path: '/' };\n!. # in days
4257                              qq!       onloadTZSetup('$jstimezone', tz_cookie, '$datetime_class');\n!;
4258                }
4259                print qq!};\n!.
4260                      qq!</script>\n!;
4261        }
4262
4263        print "</body>\n" .
4264              "</html>";
4265}
4266
4267# die_error(<http_status_code>, <error_message>[, <detailed_html_description>])
4268# Example: die_error(404, 'Hash not found')
4269# By convention, use the following status codes (as defined in RFC 2616):
4270# 400: Invalid or missing CGI parameters, or
4271#      requested object exists but has wrong type.
4272# 403: Requested feature (like "pickaxe" or "snapshot") not enabled on
4273#      this server or project.
4274# 404: Requested object/revision/project doesn't exist.
4275# 500: The server isn't configured properly, or
4276#      an internal error occurred (e.g. failed assertions caused by bugs), or
4277#      an unknown error occurred (e.g. the git binary died unexpectedly).
4278# 503: The server is currently unavailable (because it is overloaded,
4279#      or down for maintenance).  Generally, this is a temporary state.
4280sub die_error {
4281        my $status = shift || 500;
4282        my $error = esc_html(shift) || "Internal Server Error";
4283        my $extra = shift;
4284        my %opts = @_;
4285
4286        my %http_responses = (
4287                400 => '400 Bad Request',
4288                403 => '403 Forbidden',
4289                404 => '404 Not Found',
4290                500 => '500 Internal Server Error',
4291                503 => '503 Service Unavailable',
4292        );
4293        git_header_html($http_responses{$status}, undef, %opts);
4294        print <<EOF;
4295<div class="page_body">
4296<br /><br />
4297$status - $error
4298<br />
4299EOF
4300        if (defined $extra) {
4301                print "<hr />\n" .
4302                      "$extra\n";
4303        }
4304        print "</div>\n";
4305
4306        git_footer_html();
4307        goto DONE_GITWEB
4308                unless ($opts{'-error_handler'});
4309}
4310
4311## ----------------------------------------------------------------------
4312## functions printing or outputting HTML: navigation
4313
4314sub git_print_page_nav {
4315        my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
4316        $extra = '' if !defined $extra; # pager or formats
4317
4318        my @navs = qw(summary shortlog log commit commitdiff tree);
4319        if ($suppress) {
4320                @navs = grep { $_ ne $suppress } @navs;
4321        }
4322
4323        my %arg = map { $_ => {action=>$_} } @navs;
4324        if (defined $head) {
4325                for (qw(commit commitdiff)) {
4326                        $arg{$_}{'hash'} = $head;
4327                }
4328                if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
4329                        for (qw(shortlog log)) {
4330                                $arg{$_}{'hash'} = $head;
4331                        }
4332                }
4333        }
4334
4335        $arg{'tree'}{'hash'} = $treehead if defined $treehead;
4336        $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
4337
4338        my @actions = gitweb_get_feature('actions');
4339        my %repl = (
4340                '%' => '%',
4341                'n' => $project,         # project name
4342                'f' => $git_dir,         # project path within filesystem
4343                'h' => $treehead || '',  # current hash ('h' parameter)
4344                'b' => $treebase || '',  # hash base ('hb' parameter)
4345        );
4346        while (@actions) {
4347                my ($label, $link, $pos) = splice(@actions,0,3);
4348                # insert
4349                @navs = map { $_ eq $pos ? ($_, $label) : $_ } @navs;
4350                # munch munch
4351                $link =~ s/%([%nfhb])/$repl{$1}/g;
4352                $arg{$label}{'_href'} = $link;
4353        }
4354
4355        print "<div class=\"page_nav\">\n" .
4356                (join " | ",
4357                 map { $_ eq $current ?
4358                       $_ : $cgi->a({-href => ($arg{$_}{_href} ? $arg{$_}{_href} : href(%{$arg{$_}}))}, "$_")
4359                 } @navs);
4360        print "<br/>\n$extra<br/>\n" .
4361              "</div>\n";
4362}
4363
4364# returns a submenu for the nagivation of the refs views (tags, heads,
4365# remotes) with the current view disabled and the remotes view only
4366# available if the feature is enabled
4367sub format_ref_views {
4368        my ($current) = @_;
4369        my @ref_views = qw{tags heads};
4370        push @ref_views, 'remotes' if gitweb_check_feature('remote_heads');
4371        return join " | ", map {
4372                $_ eq $current ? $_ :
4373                $cgi->a({-href => href(action=>$_)}, $_)
4374        } @ref_views
4375}
4376
4377sub format_paging_nav {
4378        my ($action, $page, $has_next_link) = @_;
4379        my $paging_nav;
4380
4381
4382        if ($page > 0) {
4383                $paging_nav .=
4384                        $cgi->a({-href => href(-replay=>1, page=>undef)}, "first") .
4385                        " &sdot; " .
4386                        $cgi->a({-href => href(-replay=>1, page=>$page-1),
4387                                 -accesskey => "p", -title => "Alt-p"}, "prev");
4388        } else {
4389                $paging_nav .= "first &sdot; prev";
4390        }
4391
4392        if ($has_next_link) {
4393                $paging_nav .= " &sdot; " .
4394                        $cgi->a({-href => href(-replay=>1, page=>$page+1),
4395                                 -accesskey => "n", -title => "Alt-n"}, "next");
4396        } else {
4397                $paging_nav .= " &sdot; next";
4398        }
4399
4400        return $paging_nav;
4401}
4402
4403## ......................................................................
4404## functions printing or outputting HTML: div
4405
4406sub git_print_header_div {
4407        my ($action, $title, $hash, $hash_base) = @_;
4408        my %args = ();
4409
4410        $args{'action'} = $action;
4411        $args{'hash'} = $hash if $hash;
4412        $args{'hash_base'} = $hash_base if $hash_base;
4413
4414        print "<div class=\"header\">\n" .
4415              $cgi->a({-href => href(%args), -class => "title"},
4416              $title ? $title : $action) .
4417              "\n</div>\n";
4418}
4419
4420sub format_repo_url {
4421        my ($name, $url) = @_;
4422        return "<tr class=\"metadata_url\"><td>$name</td><td>$url</td></tr>\n";
4423}
4424
4425# Group output by placing it in a DIV element and adding a header.
4426# Options for start_div() can be provided by passing a hash reference as the
4427# first parameter to the function.
4428# Options to git_print_header_div() can be provided by passing an array
4429# reference. This must follow the options to start_div if they are present.
4430# The content can be a scalar, which is output as-is, a scalar reference, which
4431# is output after html escaping, an IO handle passed either as *handle or
4432# *handle{IO}, or a function reference. In the latter case all following
4433# parameters will be taken as argument to the content function call.
4434sub git_print_section {
4435        my ($div_args, $header_args, $content);
4436        my $arg = shift;
4437        if (ref($arg) eq 'HASH') {
4438                $div_args = $arg;
4439                $arg = shift;
4440        }
4441        if (ref($arg) eq 'ARRAY') {
4442                $header_args = $arg;
4443                $arg = shift;
4444        }
4445        $content = $arg;
4446
4447        print $cgi->start_div($div_args);
4448        git_print_header_div(@$header_args);
4449
4450        if (ref($content) eq 'CODE') {
4451                $content->(@_);
4452        } elsif (ref($content) eq 'SCALAR') {
4453                print esc_html($$content);
4454        } elsif (ref($content) eq 'GLOB' or ref($content) eq 'IO::Handle') {
4455                print <$content>;
4456        } elsif (!ref($content) && defined($content)) {
4457                print $content;
4458        }
4459
4460        print $cgi->end_div;
4461}
4462
4463sub format_timestamp_html {
4464        my $date = shift;
4465        my $strtime = $date->{'rfc2822'};
4466
4467        my (undef, undef, $datetime_class) =
4468                gitweb_get_feature('javascript-timezone');
4469        if ($datetime_class) {
4470                $strtime = qq!<span class="$datetime_class">$strtime</span>!;
4471        }
4472
4473        my $localtime_format = '(%02d:%02d %s)';
4474        if ($date->{'hour_local'} < 6) {
4475                $localtime_format = '(<span class="atnight">%02d:%02d</span> %s)';
4476        }
4477        $strtime .= ' ' .
4478                    sprintf($localtime_format,
4479                            $date->{'hour_local'}, $date->{'minute_local'}, $date->{'tz_local'});
4480
4481        return $strtime;
4482}
4483
4484# Outputs the author name and date in long form
4485sub git_print_authorship {
4486        my $co = shift;
4487        my %opts = @_;
4488        my $tag = $opts{-tag} || 'div';
4489        my $author = $co->{'author_name'};
4490
4491        my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
4492        print "<$tag class=\"author_date\">" .
4493              format_search_author($author, "author", esc_html($author)) .
4494              " [".format_timestamp_html(\%ad)."]".
4495              git_get_avatar($co->{'author_email'}, -pad_before => 1) .
4496              "</$tag>\n";
4497}
4498
4499# Outputs table rows containing the full author or committer information,
4500# in the format expected for 'commit' view (& similar).
4501# Parameters are a commit hash reference, followed by the list of people
4502# to output information for. If the list is empty it defaults to both
4503# author and committer.
4504sub git_print_authorship_rows {
4505        my $co = shift;
4506        # too bad we can't use @people = @_ || ('author', 'committer')
4507        my @people = @_;
4508        @people = ('author', 'committer') unless @people;
4509        foreach my $who (@people) {
4510                my %wd = parse_date($co->{"${who}_epoch"}, $co->{"${who}_tz"});
4511                print "<tr><td>$who</td><td>" .
4512                      format_search_author($co->{"${who}_name"}, $who,
4513                                           esc_html($co->{"${who}_name"})) . " " .
4514                      format_search_author($co->{"${who}_email"}, $who,
4515                                           esc_html("<" . $co->{"${who}_email"} . ">")) .
4516                      "</td><td rowspan=\"2\">" .
4517                      git_get_avatar($co->{"${who}_email"}, -size => 'double') .
4518                      "</td></tr>\n" .
4519                      "<tr>" .
4520                      "<td></td><td>" .
4521                      format_timestamp_html(\%wd) .
4522                      "</td>" .
4523                      "</tr>\n";
4524        }
4525}
4526
4527sub git_print_page_path {
4528        my $name = shift;
4529        my $type = shift;
4530        my $hb = shift;
4531
4532
4533        print "<div class=\"page_path\">";
4534        print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
4535                      -title => 'tree root'}, to_utf8("[$project]"));
4536        print " / ";
4537        if (defined $name) {
4538                my @dirname = split '/', $name;
4539                my $basename = pop @dirname;
4540                my $fullname = '';
4541
4542                foreach my $dir (@dirname) {
4543                        $fullname .= ($fullname ? '/' : '') . $dir;
4544                        print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
4545                                                     hash_base=>$hb),
4546                                      -title => $fullname}, esc_path($dir));
4547                        print " / ";
4548                }
4549                if (defined $type && $type eq 'blob') {
4550                        print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
4551                                                     hash_base=>$hb),
4552                                      -title => $name}, esc_path($basename));
4553                } elsif (defined $type && $type eq 'tree') {
4554                        print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
4555                                                     hash_base=>$hb),
4556                                      -title => $name}, esc_path($basename));
4557                        print " / ";
4558                } else {
4559                        print esc_path($basename);
4560                }
4561        }
4562        print "<br/></div>\n";
4563}
4564
4565sub git_print_log {
4566        my $log = shift;
4567        my %opts = @_;
4568
4569        if ($opts{'-remove_title'}) {
4570                # remove title, i.e. first line of log
4571                shift @$log;
4572        }
4573        # remove leading empty lines
4574        while (defined $log->[0] && $log->[0] eq "") {
4575                shift @$log;
4576        }
4577
4578        # print log
4579        my $skip_blank_line = 0;
4580        foreach my $line (@$log) {
4581                if ($line =~ m/^\s*([A-Z][-A-Za-z]*-[Bb]y|C[Cc]): /) {
4582                        if (! $opts{'-remove_signoff'}) {
4583                                print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
4584                                $skip_blank_line = 1;
4585                        }
4586                        next;
4587                }
4588
4589                if ($line =~ m,\s*([a-z]*link): (https?://\S+),i) {
4590                        if (! $opts{'-remove_signoff'}) {
4591                                print "<span class=\"signoff\">" . esc_html($1) . ": " .
4592                                        "<a href=\"" . esc_html($2) . "\">" . esc_html($2) . "</a>" .
4593                                        "</span><br/>\n";
4594                                $skip_blank_line = 1;
4595                        }
4596                        next;
4597                }
4598
4599                # print only one empty line
4600                # do not print empty line after signoff
4601                if ($line eq "") {
4602                        next if ($skip_blank_line);
4603                        $skip_blank_line = 1;
4604                } else {
4605                        $skip_blank_line = 0;
4606                }
4607
4608                print format_log_line_html($line) . "<br/>\n";
4609        }
4610
4611        if ($opts{'-final_empty_line'}) {
4612                # end with single empty line
4613                print "<br/>\n" unless $skip_blank_line;
4614        }
4615}
4616
4617# return link target (what link points to)
4618sub git_get_link_target {
4619        my $hash = shift;
4620        my $link_target;
4621
4622        # read link
4623        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
4624                or return;
4625        {
4626                local $/ = undef;
4627                $link_target = <$fd>;
4628        }
4629        close $fd
4630                or return;
4631
4632        return $link_target;
4633}
4634
4635# given link target, and the directory (basedir) the link is in,
4636# return target of link relative to top directory (top tree);
4637# return undef if it is not possible (including absolute links).
4638sub normalize_link_target {
4639        my ($link_target, $basedir) = @_;
4640
4641        # absolute symlinks (beginning with '/') cannot be normalized
4642        return if (substr($link_target, 0, 1) eq '/');
4643
4644        # normalize link target to path from top (root) tree (dir)
4645        my $path;
4646        if ($basedir) {
4647                $path = $basedir . '/' . $link_target;
4648        } else {
4649                # we are in top (root) tree (dir)
4650                $path = $link_target;
4651        }
4652
4653        # remove //, /./, and /../
4654        my @path_parts;
4655        foreach my $part (split('/', $path)) {
4656                # discard '.' and ''
4657                next if (!$part || $part eq '.');
4658                # handle '..'
4659                if ($part eq '..') {
4660                        if (@path_parts) {
4661                                pop @path_parts;
4662                        } else {
4663                                # link leads outside repository (outside top dir)
4664                                return;
4665                        }
4666                } else {
4667                        push @path_parts, $part;
4668                }
4669        }
4670        $path = join('/', @path_parts);
4671
4672        return $path;
4673}
4674
4675# print tree entry (row of git_tree), but without encompassing <tr> element
4676sub git_print_tree_entry {
4677        my ($t, $basedir, $hash_base, $have_blame) = @_;
4678
4679        my %base_key = ();
4680        $base_key{'hash_base'} = $hash_base if defined $hash_base;
4681
4682        # The format of a table row is: mode list link.  Where mode is
4683        # the mode of the entry, list is the name of the entry, an href,
4684        # and link is the action links of the entry.
4685
4686        print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
4687        if (exists $t->{'size'}) {
4688                print "<td class=\"size\">$t->{'size'}</td>\n";
4689        }
4690        if ($t->{'type'} eq "blob") {
4691                print "<td class=\"list\">" .
4692                        $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
4693                                               file_name=>"$basedir$t->{'name'}", %base_key),
4694                                -class => "list"}, esc_path($t->{'name'}));
4695                if (S_ISLNK(oct $t->{'mode'})) {
4696                        my $link_target = git_get_link_target($t->{'hash'});
4697                        if ($link_target) {
4698                                my $norm_target = normalize_link_target($link_target, $basedir);
4699                                if (defined $norm_target) {
4700                                        print " -> " .
4701                                              $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
4702                                                                     file_name=>$norm_target),
4703                                                       -title => $norm_target}, esc_path($link_target));
4704                                } else {
4705                                        print " -> " . esc_path($link_target);
4706                                }
4707                        }
4708                }
4709                print "</td>\n";
4710                print "<td class=\"link\">";
4711                print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
4712                                             file_name=>"$basedir$t->{'name'}", %base_key)},
4713                              "blob");
4714                if ($have_blame) {
4715                        print " | " .
4716                              $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
4717                                                     file_name=>"$basedir$t->{'name'}", %base_key)},
4718                                      "blame");
4719                }
4720                if (defined $hash_base) {
4721                        print " | " .
4722                              $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
4723                                                     hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
4724                                      "history");
4725                }
4726                print " | " .
4727                        $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
4728                                               file_name=>"$basedir$t->{'name'}")},
4729                                "raw");
4730                print "</td>\n";
4731
4732        } elsif ($t->{'type'} eq "tree") {
4733                print "<td class=\"list\">";
4734                print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
4735                                             file_name=>"$basedir$t->{'name'}",
4736                                             %base_key)},
4737                              esc_path($t->{'name'}));
4738                print "</td>\n";
4739                print "<td class=\"link\">";
4740                print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
4741                                             file_name=>"$basedir$t->{'name'}",
4742                                             %base_key)},
4743                              "tree");
4744                if (defined $hash_base) {
4745                        print " | " .
4746                              $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
4747                                                     file_name=>"$basedir$t->{'name'}")},
4748                                      "history");
4749                }
4750                print "</td>\n";
4751        } else {
4752                # unknown object: we can only present history for it
4753                # (this includes 'commit' object, i.e. submodule support)
4754                print "<td class=\"list\">" .
4755                      esc_path($t->{'name'}) .
4756                      "</td>\n";
4757                print "<td class=\"link\">";
4758                if (defined $hash_base) {
4759                        print $cgi->a({-href => href(action=>"history",
4760                                                     hash_base=>$hash_base,
4761                                                     file_name=>"$basedir$t->{'name'}")},
4762                                      "history");
4763                }
4764                print "</td>\n";
4765        }
4766}
4767
4768## ......................................................................
4769## functions printing large fragments of HTML
4770
4771# get pre-image filenames for merge (combined) diff
4772sub fill_from_file_info {
4773        my ($diff, @parents) = @_;
4774
4775        $diff->{'from_file'} = [ ];
4776        $diff->{'from_file'}[$diff->{'nparents'} - 1] = undef;
4777        for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
4778                if ($diff->{'status'}[$i] eq 'R' ||
4779                    $diff->{'status'}[$i] eq 'C') {
4780                        $diff->{'from_file'}[$i] =
4781                                git_get_path_by_hash($parents[$i], $diff->{'from_id'}[$i]);
4782                }
4783        }
4784
4785        return $diff;
4786}
4787
4788# is current raw difftree line of file deletion
4789sub is_deleted {
4790        my $diffinfo = shift;
4791
4792        return $diffinfo->{'to_id'} eq ('0' x 40);
4793}
4794
4795# does patch correspond to [previous] difftree raw line
4796# $diffinfo  - hashref of parsed raw diff format
4797# $patchinfo - hashref of parsed patch diff format
4798#              (the same keys as in $diffinfo)
4799sub is_patch_split {
4800        my ($diffinfo, $patchinfo) = @_;
4801
4802        return defined $diffinfo && defined $patchinfo
4803                && $diffinfo->{'to_file'} eq $patchinfo->{'to_file'};
4804}
4805
4806
4807sub git_difftree_body {
4808        my ($difftree, $hash, @parents) = @_;
4809        my ($parent) = $parents[0];
4810        my $have_blame = gitweb_check_feature('blame');
4811        print "<div class=\"list_head\">\n";
4812        if ($#{$difftree} > 10) {
4813                print(($#{$difftree} + 1) . " files changed:\n");
4814        }
4815        print "</div>\n";
4816
4817        print "<table class=\"" .
4818              (@parents > 1 ? "combined " : "") .
4819              "diff_tree\">\n";
4820
4821        # header only for combined diff in 'commitdiff' view
4822        my $has_header = @$difftree && @parents > 1 && $action eq 'commitdiff';
4823        if ($has_header) {
4824                # table header
4825                print "<thead><tr>\n" .
4826                       "<th></th><th></th>\n"; # filename, patchN link
4827                for (my $i = 0; $i < @parents; $i++) {
4828                        my $par = $parents[$i];
4829                        print "<th>" .
4830                              $cgi->a({-href => href(action=>"commitdiff",
4831                                                     hash=>$hash, hash_parent=>$par),
4832                                       -title => 'commitdiff to parent number ' .
4833                                                  ($i+1) . ': ' . substr($par,0,7)},
4834                                      $i+1) .
4835                              "&nbsp;</th>\n";
4836                }
4837                print "</tr></thead>\n<tbody>\n";
4838        }
4839
4840        my $alternate = 1;
4841        my $patchno = 0;
4842        foreach my $line (@{$difftree}) {
4843                my $diff = parsed_difftree_line($line);
4844
4845                if ($alternate) {
4846                        print "<tr class=\"dark\">\n";
4847                } else {
4848                        print "<tr class=\"light\">\n";
4849                }
4850                $alternate ^= 1;
4851
4852                if (exists $diff->{'nparents'}) { # combined diff
4853
4854                        fill_from_file_info($diff, @parents)
4855                                unless exists $diff->{'from_file'};
4856
4857                        if (!is_deleted($diff)) {
4858                                # file exists in the result (child) commit
4859                                print "<td>" .
4860                                      $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
4861                                                             file_name=>$diff->{'to_file'},
4862                                                             hash_base=>$hash),
4863                                              -class => "list"}, esc_path($diff->{'to_file'})) .
4864                                      "</td>\n";
4865                        } else {
4866                                print "<td>" .
4867                                      esc_path($diff->{'to_file'}) .
4868                                      "</td>\n";
4869                        }
4870
4871                        if ($action eq 'commitdiff') {
4872                                # link to patch
4873                                $patchno++;
4874                                print "<td class=\"link\">" .
4875                                      $cgi->a({-href => href(-anchor=>"patch$patchno")},
4876                                              "patch") .
4877                                      " | " .
4878                                      "</td>\n";
4879                        }
4880
4881                        my $has_history = 0;
4882                        my $not_deleted = 0;
4883                        for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
4884                                my $hash_parent = $parents[$i];
4885                                my $from_hash = $diff->{'from_id'}[$i];
4886                                my $from_path = $diff->{'from_file'}[$i];
4887                                my $status = $diff->{'status'}[$i];
4888
4889                                $has_history ||= ($status ne 'A');
4890                                $not_deleted ||= ($status ne 'D');
4891
4892                                if ($status eq 'A') {
4893                                        print "<td  class=\"link\" align=\"right\"> | </td>\n";
4894                                } elsif ($status eq 'D') {
4895                                        print "<td class=\"link\">" .
4896                                              $cgi->a({-href => href(action=>"blob",
4897                                                                     hash_base=>$hash,
4898                                                                     hash=>$from_hash,
4899                                                                     file_name=>$from_path)},
4900                                                      "blob" . ($i+1)) .
4901                                              " | </td>\n";
4902                                } else {
4903                                        if ($diff->{'to_id'} eq $from_hash) {
4904                                                print "<td class=\"link nochange\">";
4905                                        } else {
4906                                                print "<td class=\"link\">";
4907                                        }
4908                                        print $cgi->a({-href => href(action=>"blobdiff",
4909                                                                     hash=>$diff->{'to_id'},
4910                                                                     hash_parent=>$from_hash,
4911                                                                     hash_base=>$hash,
4912                                                                     hash_parent_base=>$hash_parent,
4913                                                                     file_name=>$diff->{'to_file'},
4914                                                                     file_parent=>$from_path)},
4915                                                      "diff" . ($i+1)) .
4916                                              " | </td>\n";
4917                                }
4918                        }
4919
4920                        print "<td class=\"link\">";
4921                        if ($not_deleted) {
4922                                print $cgi->a({-href => href(action=>"blob",
4923                                                             hash=>$diff->{'to_id'},
4924                                                             file_name=>$diff->{'to_file'},
4925                                                             hash_base=>$hash)},
4926                                              "blob");
4927                                print " | " if ($has_history);
4928                        }
4929                        if ($has_history) {
4930                                print $cgi->a({-href => href(action=>"history",
4931                                                             file_name=>$diff->{'to_file'},
4932                                                             hash_base=>$hash)},
4933                                              "history");
4934                        }
4935                        print "</td>\n";
4936
4937                        print "</tr>\n";
4938                        next; # instead of 'else' clause, to avoid extra indent
4939                }
4940                # else ordinary diff
4941
4942                my ($to_mode_oct, $to_mode_str, $to_file_type);
4943                my ($from_mode_oct, $from_mode_str, $from_file_type);
4944                if ($diff->{'to_mode'} ne ('0' x 6)) {
4945                        $to_mode_oct = oct $diff->{'to_mode'};
4946                        if (S_ISREG($to_mode_oct)) { # only for regular file
4947                                $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
4948                        }
4949                        $to_file_type = file_type($diff->{'to_mode'});
4950                }
4951                if ($diff->{'from_mode'} ne ('0' x 6)) {
4952                        $from_mode_oct = oct $diff->{'from_mode'};
4953                        if (S_ISREG($from_mode_oct)) { # only for regular file
4954                                $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
4955                        }
4956                        $from_file_type = file_type($diff->{'from_mode'});
4957                }
4958
4959                if ($diff->{'status'} eq "A") { # created
4960                        my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
4961                        $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
4962                        $mode_chng   .= "]</span>";
4963                        print "<td>";
4964                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
4965                                                     hash_base=>$hash, file_name=>$diff->{'file'}),
4966                                      -class => "list"}, esc_path($diff->{'file'}));
4967                        print "</td>\n";
4968                        print "<td>$mode_chng</td>\n";
4969                        print "<td class=\"link\">";
4970                        if ($action eq 'commitdiff') {
4971                                # link to patch
4972                                $patchno++;
4973                                print $cgi->a({-href => href(-anchor=>"patch$patchno")},
4974                                              "patch") .
4975                                      " | ";
4976                        }
4977                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
4978                                                     hash_base=>$hash, file_name=>$diff->{'file'})},
4979                                      "blob");
4980                        print "</td>\n";
4981
4982                } elsif ($diff->{'status'} eq "D") { # deleted
4983                        my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
4984                        print "<td>";
4985                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
4986                                                     hash_base=>$parent, file_name=>$diff->{'file'}),
4987                                       -class => "list"}, esc_path($diff->{'file'}));
4988                        print "</td>\n";
4989                        print "<td>$mode_chng</td>\n";
4990                        print "<td class=\"link\">";
4991                        if ($action eq 'commitdiff') {
4992                                # link to patch
4993                                $patchno++;
4994                                print $cgi->a({-href => href(-anchor=>"patch$patchno")},
4995                                              "patch") .
4996                                      " | ";
4997                        }
4998                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
4999                                                     hash_base=>$parent, file_name=>$diff->{'file'})},
5000                                      "blob") . " | ";
5001                        if ($have_blame) {
5002                                print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
5003                                                             file_name=>$diff->{'file'})},
5004                                              "blame") . " | ";
5005                        }
5006                        print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
5007                                                     file_name=>$diff->{'file'})},
5008                                      "history");
5009                        print "</td>\n";
5010
5011                } elsif ($diff->{'status'} eq "M" || $diff->{'status'} eq "T") { # modified, or type changed
5012                        my $mode_chnge = "";
5013                        if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
5014                                $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
5015                                if ($from_file_type ne $to_file_type) {
5016                                        $mode_chnge .= " from $from_file_type to $to_file_type";
5017                                }
5018                                if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
5019                                        if ($from_mode_str && $to_mode_str) {
5020                                                $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
5021                                        } elsif ($to_mode_str) {
5022                                                $mode_chnge .= " mode: $to_mode_str";
5023                                        }
5024                                }
5025                                $mode_chnge .= "]</span>\n";
5026                        }
5027                        print "<td>";
5028                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
5029                                                     hash_base=>$hash, file_name=>$diff->{'file'}),
5030                                      -class => "list"}, esc_path($diff->{'file'}));
5031                        print "</td>\n";
5032                        print "<td>$mode_chnge</td>\n";
5033                        print "<td class=\"link\">";
5034                        if ($action eq 'commitdiff') {
5035                                # link to patch
5036                                $patchno++;
5037                                print $cgi->a({-href => href(-anchor=>"patch$patchno")},
5038                                              "patch") .
5039                                      " | ";
5040                        } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
5041                                # "commit" view and modified file (not onlu mode changed)
5042                                print $cgi->a({-href => href(action=>"blobdiff",
5043                                                             hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
5044                                                             hash_base=>$hash, hash_parent_base=>$parent,
5045                                                             file_name=>$diff->{'file'})},
5046                                              "diff") .
5047                                      " | ";
5048                        }
5049                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
5050                                                     hash_base=>$hash, file_name=>$diff->{'file'})},
5051                                       "blob") . " | ";
5052                        if ($have_blame) {
5053                                print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
5054                                                             file_name=>$diff->{'file'})},
5055                                              "blame") . " | ";
5056                        }
5057                        print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
5058                                                     file_name=>$diff->{'file'})},
5059                                      "history");
5060                        print "</td>\n";
5061
5062                } elsif ($diff->{'status'} eq "R" || $diff->{'status'} eq "C") { # renamed or copied
5063                        my %status_name = ('R' => 'moved', 'C' => 'copied');
5064                        my $nstatus = $status_name{$diff->{'status'}};
5065                        my $mode_chng = "";
5066                        if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
5067                                # mode also for directories, so we cannot use $to_mode_str
5068                                $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
5069                        }
5070                        print "<td>" .
5071                              $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
5072                                                     hash=>$diff->{'to_id'}, file_name=>$diff->{'to_file'}),
5073                                      -class => "list"}, esc_path($diff->{'to_file'})) . "</td>\n" .
5074                              "<td><span class=\"file_status $nstatus\">[$nstatus from " .
5075                              $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
5076                                                     hash=>$diff->{'from_id'}, file_name=>$diff->{'from_file'}),
5077                                      -class => "list"}, esc_path($diff->{'from_file'})) .
5078                              " with " . (int $diff->{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
5079                              "<td class=\"link\">";
5080                        if ($action eq 'commitdiff') {
5081                                # link to patch
5082                                $patchno++;
5083                                print $cgi->a({-href => href(-anchor=>"patch$patchno")},
5084                                              "patch") .
5085                                      " | ";
5086                        } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
5087                                # "commit" view and modified file (not only pure rename or copy)
5088                                print $cgi->a({-href => href(action=>"blobdiff",
5089                                                             hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
5090                                                             hash_base=>$hash, hash_parent_base=>$parent,
5091                                                             file_name=>$diff->{'to_file'}, file_parent=>$diff->{'from_file'})},
5092                                              "diff") .
5093                                      " | ";
5094                        }
5095                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
5096                                                     hash_base=>$parent, file_name=>$diff->{'to_file'})},
5097                                      "blob") . " | ";
5098                        if ($have_blame) {
5099                                print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
5100                                                             file_name=>$diff->{'to_file'})},
5101                                              "blame") . " | ";
5102                        }
5103                        print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
5104                                                    file_name=>$diff->{'to_file'})},
5105                                      "history");
5106                        print "</td>\n";
5107
5108                } # we should not encounter Unmerged (U) or Unknown (X) status
5109                print "</tr>\n";
5110        }
5111        print "</tbody>" if $has_header;
5112        print "</table>\n";
5113}
5114
5115# Print context lines and then rem/add lines in a side-by-side manner.
5116sub print_sidebyside_diff_lines {
5117        my ($ctx, $rem, $add) = @_;
5118
5119        # print context block before add/rem block
5120        if (@$ctx) {
5121                print join '',
5122                        '<div class="chunk_block ctx">',
5123                                '<div class="old">',
5124                                @$ctx,
5125                                '</div>',
5126                                '<div class="new">',
5127                                @$ctx,
5128                                '</div>',
5129                        '</div>';
5130        }
5131
5132        if (!@$add) {
5133                # pure removal
5134                print join '',
5135                        '<div class="chunk_block rem">',
5136                                '<div class="old">',
5137                                @$rem,
5138                                '</div>',
5139                        '</div>';
5140        } elsif (!@$rem) {
5141                # pure addition
5142                print join '',
5143                        '<div class="chunk_block add">',
5144                                '<div class="new">',
5145                                @$add,
5146                                '</div>',
5147                        '</div>';
5148        } else {
5149                print join '',
5150                        '<div class="chunk_block chg">',
5151                                '<div class="old">',
5152                                @$rem,
5153                                '</div>',
5154                                '<div class="new">',
5155                                @$add,
5156                                '</div>',
5157                        '</div>';
5158        }
5159}
5160
5161# Print context lines and then rem/add lines in inline manner.
5162sub print_inline_diff_lines {
5163        my ($ctx, $rem, $add) = @_;
5164
5165        print @$ctx, @$rem, @$add;
5166}
5167
5168# Format removed and added line, mark changed part and HTML-format them.
5169# Implementation is based on contrib/diff-highlight
5170sub format_rem_add_lines_pair {
5171        my ($rem, $add, $num_parents) = @_;
5172
5173        # We need to untabify lines before split()'ing them;
5174        # otherwise offsets would be invalid.
5175        chomp $rem;
5176        chomp $add;
5177        $rem = untabify($rem);
5178        $add = untabify($add);
5179
5180        my @rem = split(//, $rem);
5181        my @add = split(//, $add);
5182        my ($esc_rem, $esc_add);
5183        # Ignore leading +/- characters for each parent.
5184        my ($prefix_len, $suffix_len) = ($num_parents, 0);
5185        my ($prefix_has_nonspace, $suffix_has_nonspace);
5186
5187        my $shorter = (@rem < @add) ? @rem : @add;
5188        while ($prefix_len < $shorter) {
5189                last if ($rem[$prefix_len] ne $add[$prefix_len]);
5190
5191                $prefix_has_nonspace = 1 if ($rem[$prefix_len] !~ /\s/);
5192                $prefix_len++;
5193        }
5194
5195        while ($prefix_len + $suffix_len < $shorter) {
5196                last if ($rem[-1 - $suffix_len] ne $add[-1 - $suffix_len]);
5197
5198                $suffix_has_nonspace = 1 if ($rem[-1 - $suffix_len] !~ /\s/);
5199                $suffix_len++;
5200        }
5201
5202        # Mark lines that are different from each other, but have some common
5203        # part that isn't whitespace.  If lines are completely different, don't
5204        # mark them because that would make output unreadable, especially if
5205        # diff consists of multiple lines.
5206        if ($prefix_has_nonspace || $suffix_has_nonspace) {
5207                $esc_rem = esc_html_hl_regions($rem, 'marked',
5208                        [$prefix_len, @rem - $suffix_len], -nbsp=>1);
5209                $esc_add = esc_html_hl_regions($add, 'marked',
5210                        [$prefix_len, @add - $suffix_len], -nbsp=>1);
5211        } else {
5212                $esc_rem = esc_html($rem, -nbsp=>1);
5213                $esc_add = esc_html($add, -nbsp=>1);
5214        }
5215
5216        return format_diff_line(\$esc_rem, 'rem'),
5217               format_diff_line(\$esc_add, 'add');
5218}
5219
5220# HTML-format diff context, removed and added lines.
5221sub format_ctx_rem_add_lines {
5222        my ($ctx, $rem, $add, $num_parents) = @_;
5223        my (@new_ctx, @new_rem, @new_add);
5224        my $can_highlight = 0;
5225        my $is_combined = ($num_parents > 1);
5226
5227        # Highlight if every removed line has a corresponding added line.
5228        if (@$add > 0 && @$add == @$rem) {
5229                $can_highlight = 1;
5230
5231                # Highlight lines in combined diff only if the chunk contains
5232                # diff between the same version, e.g.
5233                #
5234                #    - a
5235                #   -  b
5236                #    + c
5237                #   +  d
5238                #
5239                # Otherwise the highlightling would be confusing.
5240                if ($is_combined) {
5241                        for (my $i = 0; $i < @$add; $i++) {
5242                                my $prefix_rem = substr($rem->[$i], 0, $num_parents);
5243                                my $prefix_add = substr($add->[$i], 0, $num_parents);
5244
5245                                $prefix_rem =~ s/-/+/g;
5246
5247                                if ($prefix_rem ne $prefix_add) {
5248                                        $can_highlight = 0;
5249                                        last;
5250                                }
5251                        }
5252                }
5253        }
5254
5255        if ($can_highlight) {
5256                for (my $i = 0; $i < @$add; $i++) {
5257                        my ($line_rem, $line_add) = format_rem_add_lines_pair(
5258                                $rem->[$i], $add->[$i], $num_parents);
5259                        push @new_rem, $line_rem;
5260                        push @new_add, $line_add;
5261                }
5262        } else {
5263                @new_rem = map { format_diff_line($_, 'rem') } @$rem;
5264                @new_add = map { format_diff_line($_, 'add') } @$add;
5265        }
5266
5267        @new_ctx = map { format_diff_line($_, 'ctx') } @$ctx;
5268
5269        return (\@new_ctx, \@new_rem, \@new_add);
5270}
5271
5272# Print context lines and then rem/add lines.
5273sub print_diff_lines {
5274        my ($ctx, $rem, $add, $diff_style, $num_parents) = @_;
5275        my $is_combined = $num_parents > 1;
5276
5277        ($ctx, $rem, $add) = format_ctx_rem_add_lines($ctx, $rem, $add,
5278                $num_parents);
5279
5280        if ($diff_style eq 'sidebyside' && !$is_combined) {
5281                print_sidebyside_diff_lines($ctx, $rem, $add);
5282        } else {
5283                # default 'inline' style and unknown styles
5284                print_inline_diff_lines($ctx, $rem, $add);
5285        }
5286}
5287
5288sub print_diff_chunk {
5289        my ($diff_style, $num_parents, $from, $to, @chunk) = @_;
5290        my (@ctx, @rem, @add);
5291
5292        # The class of the previous line.
5293        my $prev_class = '';
5294
5295        return unless @chunk;
5296
5297        # incomplete last line might be among removed or added lines,
5298        # or both, or among context lines: find which
5299        for (my $i = 1; $i < @chunk; $i++) {
5300                if ($chunk[$i][0] eq 'incomplete') {
5301                        $chunk[$i][0] = $chunk[$i-1][0];
5302                }
5303        }
5304
5305        # guardian
5306        push @chunk, ["", ""];
5307
5308        foreach my $line_info (@chunk) {
5309                my ($class, $line) = @$line_info;
5310
5311                # print chunk headers
5312                if ($class && $class eq 'chunk_header') {
5313                        print format_diff_line($line, $class, $from, $to);
5314                        next;
5315                }
5316
5317                ## print from accumulator when have some add/rem lines or end
5318                # of chunk (flush context lines), or when have add and rem
5319                # lines and new block is reached (otherwise add/rem lines could
5320                # be reordered)
5321                if (!$class || ((@rem || @add) && $class eq 'ctx') ||
5322                    (@rem && @add && $class ne $prev_class)) {
5323                        print_diff_lines(\@ctx, \@rem, \@add,
5324                                         $diff_style, $num_parents);
5325                        @ctx = @rem = @add = ();
5326                }
5327
5328                ## adding lines to accumulator
5329                # guardian value
5330                last unless $line;
5331                # rem, add or change
5332                if ($class eq 'rem') {
5333                        push @rem, $line;
5334                } elsif ($class eq 'add') {
5335                        push @add, $line;
5336                }
5337                # context line
5338                if ($class eq 'ctx') {
5339                        push @ctx, $line;
5340                }
5341
5342                $prev_class = $class;
5343        }
5344}
5345
5346sub git_patchset_body {
5347        my ($fd, $diff_style, $difftree, $hash, @hash_parents) = @_;
5348        my ($hash_parent) = $hash_parents[0];
5349
5350        my $is_combined = (@hash_parents > 1);
5351        my $patch_idx = 0;
5352        my $patch_number = 0;
5353        my $patch_line;
5354        my $diffinfo;
5355        my $to_name;
5356        my (%from, %to);
5357        my @chunk; # for side-by-side diff
5358
5359        print "<div class=\"patchset\">\n";
5360
5361        # skip to first patch
5362        while ($patch_line = <$fd>) {
5363                chomp $patch_line;
5364
5365                last if ($patch_line =~ m/^diff /);
5366        }
5367
5368 PATCH:
5369        while ($patch_line) {
5370
5371                # parse "git diff" header line
5372                if ($patch_line =~ m/^diff --git (\"(?:[^\\\"]*(?:\\.[^\\\"]*)*)\"|[^ "]*) (.*)$/) {
5373                        # $1 is from_name, which we do not use
5374                        $to_name = unquote($2);
5375                        $to_name =~ s!^b/!!;
5376                } elsif ($patch_line =~ m/^diff --(cc|combined) ("?.*"?)$/) {
5377                        # $1 is 'cc' or 'combined', which we do not use
5378                        $to_name = unquote($2);
5379                } else {
5380                        $to_name = undef;
5381                }
5382
5383                # check if current patch belong to current raw line
5384                # and parse raw git-diff line if needed
5385                if (is_patch_split($diffinfo, { 'to_file' => $to_name })) {
5386                        # this is continuation of a split patch
5387                        print "<div class=\"patch cont\">\n";
5388                } else {
5389                        # advance raw git-diff output if needed
5390                        $patch_idx++ if defined $diffinfo;
5391
5392                        # read and prepare patch information
5393                        $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
5394
5395                        # compact combined diff output can have some patches skipped
5396                        # find which patch (using pathname of result) we are at now;
5397                        if ($is_combined) {
5398                                while ($to_name ne $diffinfo->{'to_file'}) {
5399                                        print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
5400                                              format_diff_cc_simplified($diffinfo, @hash_parents) .
5401                                              "</div>\n";  # class="patch"
5402
5403                                        $patch_idx++;
5404                                        $patch_number++;
5405
5406                                        last if $patch_idx > $#$difftree;
5407                                        $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
5408                                }
5409                        }
5410
5411                        # modifies %from, %to hashes
5412                        parse_from_to_diffinfo($diffinfo, \%from, \%to, @hash_parents);
5413
5414                        # this is first patch for raw difftree line with $patch_idx index
5415                        # we index @$difftree array from 0, but number patches from 1
5416                        print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
5417                }
5418
5419                # git diff header
5420                #assert($patch_line =~ m/^diff /) if DEBUG;
5421                #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
5422                $patch_number++;
5423                # print "git diff" header
5424                print format_git_diff_header_line($patch_line, $diffinfo,
5425                                                  \%from, \%to);
5426
5427                # print extended diff header
5428                print "<div class=\"diff extended_header\">\n";
5429        EXTENDED_HEADER:
5430                while ($patch_line = <$fd>) {
5431                        chomp $patch_line;
5432
5433                        last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
5434
5435                        print format_extended_diff_header_line($patch_line, $diffinfo,
5436                                                               \%from, \%to);
5437                }
5438                print "</div>\n"; # class="diff extended_header"
5439
5440                # from-file/to-file diff header
5441                if (! $patch_line) {
5442                        print "</div>\n"; # class="patch"
5443                        last PATCH;
5444                }
5445                next PATCH if ($patch_line =~ m/^diff /);
5446                #assert($patch_line =~ m/^---/) if DEBUG;
5447
5448                my $last_patch_line = $patch_line;
5449                $patch_line = <$fd>;
5450                chomp $patch_line;
5451                #assert($patch_line =~ m/^\+\+\+/) if DEBUG;
5452
5453                print format_diff_from_to_header($last_patch_line, $patch_line,
5454                                                 $diffinfo, \%from, \%to,
5455                                                 @hash_parents);
5456
5457                # the patch itself
5458        LINE:
5459                while ($patch_line = <$fd>) {
5460                        chomp $patch_line;
5461
5462                        next PATCH if ($patch_line =~ m/^diff /);
5463
5464                        my $class = diff_line_class($patch_line, \%from, \%to);
5465
5466                        if ($class eq 'chunk_header') {
5467                                print_diff_chunk($diff_style, scalar @hash_parents, \%from, \%to, @chunk);
5468                                @chunk = ();
5469                        }
5470
5471                        push @chunk, [ $class, $patch_line ];
5472                }
5473
5474        } continue {
5475                if (@chunk) {
5476                        print_diff_chunk($diff_style, scalar @hash_parents, \%from, \%to, @chunk);
5477                        @chunk = ();
5478                }
5479                print "</div>\n"; # class="patch"
5480        }
5481
5482        # for compact combined (--cc) format, with chunk and patch simplification
5483        # the patchset might be empty, but there might be unprocessed raw lines
5484        for (++$patch_idx if $patch_number > 0;
5485             $patch_idx < @$difftree;
5486             ++$patch_idx) {
5487                # read and prepare patch information
5488                $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
5489
5490                # generate anchor for "patch" links in difftree / whatchanged part
5491                print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
5492                      format_diff_cc_simplified($diffinfo, @hash_parents) .
5493                      "</div>\n";  # class="patch"
5494
5495                $patch_number++;
5496        }
5497
5498        if ($patch_number == 0) {
5499                if (@hash_parents > 1) {
5500                        print "<div class=\"diff nodifferences\">Trivial merge</div>\n";
5501                } else {
5502                        print "<div class=\"diff nodifferences\">No differences found</div>\n";
5503                }
5504        }
5505
5506        print "</div>\n"; # class="patchset"
5507}
5508
5509# . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5510
5511sub git_project_search_form {
5512        my ($searchtext, $search_use_regexp) = @_;
5513
5514        my $limit = '';
5515        if ($project_filter) {
5516                $limit = " in '$project_filter/'";
5517        }
5518
5519        print "<div class=\"projsearch\">\n";
5520        print $cgi->start_form(-method => 'get', -action => $my_uri) .
5521              $cgi->hidden(-name => 'a', -value => 'project_list')  . "\n";
5522        print $cgi->hidden(-name => 'pf', -value => $project_filter). "\n"
5523                if (defined $project_filter);
5524        print $cgi->textfield(-name => 's', -value => $searchtext,
5525                              -title => "Search project by name and description$limit",
5526                              -size => 60) . "\n" .
5527              "<span title=\"Extended regular expression\">" .
5528              $cgi->checkbox(-name => 'sr', -value => 1, -label => 're',
5529                             -checked => $search_use_regexp) .
5530              "</span>\n" .
5531              $cgi->submit(-name => 'btnS', -value => 'Search') .
5532              $cgi->end_form() . "\n" .
5533              $cgi->a({-href => href(project => undef, searchtext => undef,
5534                                     project_filter => $project_filter)},
5535                      esc_html("List all projects$limit")) . "<br />\n";
5536        print "</div>\n";
5537}
5538
5539# entry for given @keys needs filling if at least one of keys in list
5540# is not present in %$project_info
5541sub project_info_needs_filling {
5542        my ($project_info, @keys) = @_;
5543
5544        # return List::MoreUtils::any { !exists $project_info->{$_} } @keys;
5545        foreach my $key (@keys) {
5546                if (!exists $project_info->{$key}) {
5547                        return 1;
5548                }
5549        }
5550        return;
5551}
5552
5553# fills project list info (age, description, owner, category, forks, etc.)
5554# for each project in the list, removing invalid projects from
5555# returned list, or fill only specified info.
5556#
5557# Invalid projects are removed from the returned list if and only if you
5558# ask 'age' or 'age_string' to be filled, because they are the only fields
5559# that run unconditionally git command that requires repository, and
5560# therefore do always check if project repository is invalid.
5561#
5562# USAGE:
5563# * fill_project_list_info(\@project_list, 'descr_long', 'ctags')
5564#   ensures that 'descr_long' and 'ctags' fields are filled
5565# * @project_list = fill_project_list_info(\@project_list)
5566#   ensures that all fields are filled (and invalid projects removed)
5567#
5568# NOTE: modifies $projlist, but does not remove entries from it
5569sub fill_project_list_info {
5570        my ($projlist, @wanted_keys) = @_;
5571        my @projects;
5572        my $filter_set = sub { return @_; };
5573        if (@wanted_keys) {
5574                my %wanted_keys = map { $_ => 1 } @wanted_keys;
5575                $filter_set = sub { return grep { $wanted_keys{$_} } @_; };
5576        }
5577
5578        my $show_ctags = gitweb_check_feature('ctags');
5579 PROJECT:
5580        foreach my $pr (@$projlist) {
5581                if (project_info_needs_filling($pr, $filter_set->('age', 'age_string'))) {
5582                        my (@activity) = git_get_last_activity($pr->{'path'});
5583                        unless (@activity) {
5584                                next PROJECT;
5585                        }
5586                        ($pr->{'age'}, $pr->{'age_string'}) = @activity;
5587                }
5588                if (project_info_needs_filling($pr, $filter_set->('descr', 'descr_long'))) {
5589                        my $descr = git_get_project_description($pr->{'path'}) || "";
5590                        $descr = to_utf8($descr);
5591                        $pr->{'descr_long'} = $descr;
5592                        $pr->{'descr'} = chop_str($descr, $projects_list_description_width, 5);
5593                }
5594                if (project_info_needs_filling($pr, $filter_set->('owner'))) {
5595                        $pr->{'owner'} = git_get_project_owner("$pr->{'path'}") || "";
5596                }
5597                if ($show_ctags &&
5598                    project_info_needs_filling($pr, $filter_set->('ctags'))) {
5599                        $pr->{'ctags'} = git_get_project_ctags($pr->{'path'});
5600                }
5601                if ($projects_list_group_categories &&
5602                    project_info_needs_filling($pr, $filter_set->('category'))) {
5603                        my $cat = git_get_project_category($pr->{'path'}) ||
5604                                                           $project_list_default_category;
5605                        $pr->{'category'} = to_utf8($cat);
5606                }
5607
5608                push @projects, $pr;
5609        }
5610
5611        return @projects;
5612}
5613
5614sub sort_projects_list {
5615        my ($projlist, $order) = @_;
5616
5617        sub order_str {
5618                my $key = shift;
5619                return sub { $a->{$key} cmp $b->{$key} };
5620        }
5621
5622        sub order_num_then_undef {
5623                my $key = shift;
5624                return sub {
5625                        defined $a->{$key} ?
5626                                (defined $b->{$key} ? $a->{$key} <=> $b->{$key} : -1) :
5627                                (defined $b->{$key} ? 1 : 0)
5628                };
5629        }
5630
5631        my %orderings = (
5632                project => order_str('path'),
5633                descr => order_str('descr_long'),
5634                owner => order_str('owner'),
5635                age => order_num_then_undef('age'),
5636        );
5637
5638        my $ordering = $orderings{$order};
5639        return defined $ordering ? sort $ordering @$projlist : @$projlist;
5640}
5641
5642# returns a hash of categories, containing the list of project
5643# belonging to each category
5644sub build_projlist_by_category {
5645        my ($projlist, $from, $to) = @_;
5646        my %categories;
5647
5648        $from = 0 unless defined $from;
5649        $to = $#$projlist if (!defined $to || $#$projlist < $to);
5650
5651        for (my $i = $from; $i <= $to; $i++) {
5652                my $pr = $projlist->[$i];
5653                push @{$categories{ $pr->{'category'} }}, $pr;
5654        }
5655
5656        return wantarray ? %categories : \%categories;
5657}
5658
5659# print 'sort by' <th> element, generating 'sort by $name' replay link
5660# if that order is not selected
5661sub print_sort_th {
5662        print format_sort_th(@_);
5663}
5664
5665sub format_sort_th {
5666        my ($name, $order, $header) = @_;
5667        my $sort_th = "";
5668        $header ||= ucfirst($name);
5669
5670        if ($order eq $name) {
5671                $sort_th .= "<th>$header</th>\n";
5672        } else {
5673                $sort_th .= "<th>" .
5674                            $cgi->a({-href => href(-replay=>1, order=>$name),
5675                                     -class => "header"}, $header) .
5676                            "</th>\n";
5677        }
5678
5679        return $sort_th;
5680}
5681
5682sub git_project_list_rows {
5683        my ($projlist, $from, $to, $check_forks) = @_;
5684
5685        $from = 0 unless defined $from;
5686        $to = $#$projlist if (!defined $to || $#$projlist < $to);
5687
5688        my $alternate = 1;
5689        for (my $i = $from; $i <= $to; $i++) {
5690                my $pr = $projlist->[$i];
5691
5692                if ($alternate) {
5693                        print "<tr class=\"dark\">\n";
5694                } else {
5695                        print "<tr class=\"light\">\n";
5696                }
5697                $alternate ^= 1;
5698
5699                if ($check_forks) {
5700                        print "<td>";
5701                        if ($pr->{'forks'}) {
5702                                my $nforks = scalar @{$pr->{'forks'}};
5703                                if ($nforks > 0) {
5704                                        print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks"),
5705                                                       -title => "$nforks forks"}, "+");
5706                                } else {
5707                                        print $cgi->span({-title => "$nforks forks"}, "+");
5708                                }
5709                        }
5710                        print "</td>\n";
5711                }
5712                print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
5713                                        -class => "list"},
5714                                       esc_html_match_hl($pr->{'path'}, $search_regexp)) .
5715                      "</td>\n" .
5716                      "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
5717                                        -class => "list",
5718                                        -title => $pr->{'descr_long'}},
5719                                        $search_regexp
5720                                        ? esc_html_match_hl_chopped($pr->{'descr_long'},
5721                                                                    $pr->{'descr'}, $search_regexp)
5722                                        : esc_html($pr->{'descr'})) .
5723                      "</td>\n";
5724                unless ($omit_owner) {
5725                        print "<td><i>" . chop_and_escape_str($pr->{'owner'}, 15) . "</i></td>\n";
5726                }
5727                unless ($omit_age_column) {
5728                        print "<td class=\"". age_class($pr->{'age'}) . "\">" .
5729                            (defined $pr->{'age_string'} ? $pr->{'age_string'} : "No commits") . "</td>\n";
5730                }
5731                print"<td class=\"link\">" .
5732                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
5733                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
5734                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
5735                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
5736                      ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
5737                      "</td>\n" .
5738                      "</tr>\n";
5739        }
5740}
5741
5742sub git_project_list_body {
5743        # actually uses global variable $project
5744        my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
5745        my @projects = @$projlist;
5746
5747        my $check_forks = gitweb_check_feature('forks');
5748        my $show_ctags  = gitweb_check_feature('ctags');
5749        my $tagfilter = $show_ctags ? $input_params{'ctag'} : undef;
5750        $check_forks = undef
5751                if ($tagfilter || $search_regexp);
5752
5753        # filtering out forks before filling info allows to do less work
5754        @projects = filter_forks_from_projects_list(\@projects)
5755                if ($check_forks);
5756        # search_projects_list pre-fills required info
5757        @projects = search_projects_list(\@projects,
5758                                         'search_regexp' => $search_regexp,
5759                                         'tagfilter'  => $tagfilter)
5760                if ($tagfilter || $search_regexp);
5761        # fill the rest
5762        my @all_fields = ('descr', 'descr_long', 'ctags', 'category');
5763        push @all_fields, ('age', 'age_string') unless($omit_age_column);
5764        push @all_fields, 'owner' unless($omit_owner);
5765        @projects = fill_project_list_info(\@projects, @all_fields);
5766
5767        $order ||= $default_projects_order;
5768        $from = 0 unless defined $from;
5769        $to = $#projects if (!defined $to || $#projects < $to);
5770
5771        # short circuit
5772        if ($from > $to) {
5773                print "<center>\n".
5774                      "<b>No such projects found</b><br />\n".
5775                      "Click ".$cgi->a({-href=>href(project=>undef)},"here")." to view all projects<br />\n".
5776                      "</center>\n<br />\n";
5777                return;
5778        }
5779
5780        @projects = sort_projects_list(\@projects, $order);
5781
5782        if ($show_ctags) {
5783                my $ctags = git_gather_all_ctags(\@projects);
5784                my $cloud = git_populate_project_tagcloud($ctags);
5785                print git_show_project_tagcloud($cloud, 64);
5786        }
5787
5788        print "<table class=\"project_list\">\n";
5789        unless ($no_header) {
5790                print "<tr>\n";
5791                if ($check_forks) {
5792                        print "<th></th>\n";
5793                }
5794                print_sort_th('project', $order, 'Project');
5795                print_sort_th('descr', $order, 'Description');
5796                print_sort_th('owner', $order, 'Owner') unless $omit_owner;
5797                print_sort_th('age', $order, 'Last Change') unless $omit_age_column;
5798                print "<th></th>\n" . # for links
5799                      "</tr>\n";
5800        }
5801
5802        if ($projects_list_group_categories) {
5803                # only display categories with projects in the $from-$to window
5804                @projects = sort {$a->{'category'} cmp $b->{'category'}} @projects[$from..$to];
5805                my %categories = build_projlist_by_category(\@projects, $from, $to);
5806                foreach my $cat (sort keys %categories) {
5807                        unless ($cat eq "") {
5808                                print "<tr>\n";
5809                                if ($check_forks) {
5810                                        print "<td></td>\n";
5811                                }
5812                                print "<td class=\"category\" colspan=\"5\">".esc_html($cat)."</td>\n";
5813                                print "</tr>\n";
5814                        }
5815
5816                        git_project_list_rows($categories{$cat}, undef, undef, $check_forks);
5817                }
5818        } else {
5819                git_project_list_rows(\@projects, $from, $to, $check_forks);
5820        }
5821
5822        if (defined $extra) {
5823                print "<tr>\n";
5824                if ($check_forks) {
5825                        print "<td></td>\n";
5826                }
5827                print "<td colspan=\"5\">$extra</td>\n" .
5828                      "</tr>\n";
5829        }
5830        print "</table>\n";
5831}
5832
5833sub git_log_body {
5834        # uses global variable $project
5835        my ($commitlist, $from, $to, $refs, $extra) = @_;
5836
5837        $from = 0 unless defined $from;
5838        $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
5839
5840        for (my $i = 0; $i <= $to; $i++) {
5841                my %co = %{$commitlist->[$i]};
5842                next if !%co;
5843                my $commit = $co{'id'};
5844                my $ref = format_ref_marker($refs, $commit);
5845                git_print_header_div('commit',
5846                               "<span class=\"age\">$co{'age_string'}</span>" .
5847                               esc_html($co{'title'}) . $ref,
5848                               $commit);
5849                print "<div class=\"title_text\">\n" .
5850                      "<div class=\"log_link\">\n" .
5851                      $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
5852                      " | " .
5853                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
5854                      " | " .
5855                      $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
5856                      "<br/>\n" .
5857                      "</div>\n";
5858                      git_print_authorship(\%co, -tag => 'span');
5859                      print "<br/>\n</div>\n";
5860
5861                print "<div class=\"log_body\">\n";
5862                git_print_log($co{'comment'}, -final_empty_line=> 1);
5863                print "</div>\n";
5864        }
5865        if ($extra) {
5866                print "<div class=\"page_nav\">\n";
5867                print "$extra\n";
5868                print "</div>\n";
5869        }
5870}
5871
5872sub git_shortlog_body {
5873        # uses global variable $project
5874        my ($commitlist, $from, $to, $refs, $extra) = @_;
5875
5876        $from = 0 unless defined $from;
5877        $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
5878
5879        print "<table class=\"shortlog\">\n";
5880        my $alternate = 1;
5881        for (my $i = $from; $i <= $to; $i++) {
5882                my %co = %{$commitlist->[$i]};
5883                my $commit = $co{'id'};
5884                my $ref = format_ref_marker($refs, $commit);
5885                if ($alternate) {
5886                        print "<tr class=\"dark\">\n";
5887                } else {
5888                        print "<tr class=\"light\">\n";
5889                }
5890                $alternate ^= 1;
5891                # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
5892                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
5893                      format_author_html('td', \%co, 10) . "<td>";
5894                print format_subject_html($co{'title'}, $co{'title_short'},
5895                                          href(action=>"commit", hash=>$commit), $ref);
5896                print "</td>\n" .
5897                      "<td class=\"link\">" .
5898                      $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
5899                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
5900                      $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
5901                my $snapshot_links = format_snapshot_links($commit);
5902                if (defined $snapshot_links) {
5903                        print " | " . $snapshot_links;
5904                }
5905                print "</td>\n" .
5906                      "</tr>\n";
5907        }
5908        if (defined $extra) {
5909                print "<tr>\n" .
5910                      "<td colspan=\"4\">$extra</td>\n" .
5911                      "</tr>\n";
5912        }
5913        print "</table>\n";
5914}
5915
5916sub git_history_body {
5917        # Warning: assumes constant type (blob or tree) during history
5918        my ($commitlist, $from, $to, $refs, $extra,
5919            $file_name, $file_hash, $ftype) = @_;
5920
5921        $from = 0 unless defined $from;
5922        $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
5923
5924        print "<table class=\"history\">\n";
5925        my $alternate = 1;
5926        for (my $i = $from; $i <= $to; $i++) {
5927                my %co = %{$commitlist->[$i]};
5928                if (!%co) {
5929                        next;
5930                }
5931                my $commit = $co{'id'};
5932
5933                my $ref = format_ref_marker($refs, $commit);
5934
5935                if ($alternate) {
5936                        print "<tr class=\"dark\">\n";
5937                } else {
5938                        print "<tr class=\"light\">\n";
5939                }
5940                $alternate ^= 1;
5941                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
5942        # shortlog:   format_author_html('td', \%co, 10)
5943                      format_author_html('td', \%co, 15, 3) . "<td>";
5944                # originally git_history used chop_str($co{'title'}, 50)
5945                print format_subject_html($co{'title'}, $co{'title_short'},
5946                                          href(action=>"commit", hash=>$commit), $ref);
5947                print "</td>\n" .
5948                      "<td class=\"link\">" .
5949                      $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
5950                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
5951
5952                if ($ftype eq 'blob') {
5953                        my $blob_current = $file_hash;
5954                        my $blob_parent  = git_get_hash_by_path($commit, $file_name);
5955                        if (defined $blob_current && defined $blob_parent &&
5956                                        $blob_current ne $blob_parent) {
5957                                print " | " .
5958                                        $cgi->a({-href => href(action=>"blobdiff",
5959                                                               hash=>$blob_current, hash_parent=>$blob_parent,
5960                                                               hash_base=>$hash_base, hash_parent_base=>$commit,
5961                                                               file_name=>$file_name)},
5962                                                "diff to current");
5963                        }
5964                }
5965                print "</td>\n" .
5966                      "</tr>\n";
5967        }
5968        if (defined $extra) {
5969                print "<tr>\n" .
5970                      "<td colspan=\"4\">$extra</td>\n" .
5971                      "</tr>\n";
5972        }
5973        print "</table>\n";
5974}
5975
5976sub git_tags_body {
5977        # uses global variable $project
5978        my ($taglist, $from, $to, $extra) = @_;
5979        $from = 0 unless defined $from;
5980        $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
5981
5982        print "<table class=\"tags\">\n";
5983        my $alternate = 1;
5984        for (my $i = $from; $i <= $to; $i++) {
5985                my $entry = $taglist->[$i];
5986                my %tag = %$entry;
5987                my $comment = $tag{'subject'};
5988                my $comment_short;
5989                if (defined $comment) {
5990                        $comment_short = chop_str($comment, 30, 5);
5991                }
5992                if ($alternate) {
5993                        print "<tr class=\"dark\">\n";
5994                } else {
5995                        print "<tr class=\"light\">\n";
5996                }
5997                $alternate ^= 1;
5998                if (defined $tag{'age'}) {
5999                        print "<td><i>$tag{'age'}</i></td>\n";
6000                } else {
6001                        print "<td></td>\n";
6002                }
6003                print "<td>" .
6004                      $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
6005                               -class => "list name"}, esc_html($tag{'name'})) .
6006                      "</td>\n" .
6007                      "<td>";
6008                if (defined $comment) {
6009                        print format_subject_html($comment, $comment_short,
6010                                                  href(action=>"tag", hash=>$tag{'id'}));
6011                }
6012                print "</td>\n" .
6013                      "<td class=\"selflink\">";
6014                if ($tag{'type'} eq "tag") {
6015                        print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
6016                } else {
6017                        print "&nbsp;";
6018                }
6019                print "</td>\n" .
6020                      "<td class=\"link\">" . " | " .
6021                      $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
6022                if ($tag{'reftype'} eq "commit") {
6023                        print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'fullname'})}, "shortlog") .
6024                              " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'fullname'})}, "log");
6025                } elsif ($tag{'reftype'} eq "blob") {
6026                        print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
6027                }
6028                print "</td>\n" .
6029                      "</tr>";
6030        }
6031        if (defined $extra) {
6032                print "<tr>\n" .
6033                      "<td colspan=\"5\">$extra</td>\n" .
6034                      "</tr>\n";
6035        }
6036        print "</table>\n";
6037}
6038
6039sub git_heads_body {
6040        # uses global variable $project
6041        my ($headlist, $head_at, $from, $to, $extra) = @_;
6042        $from = 0 unless defined $from;
6043        $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
6044
6045        print "<table class=\"heads\">\n";
6046        my $alternate = 1;
6047        for (my $i = $from; $i <= $to; $i++) {
6048                my $entry = $headlist->[$i];
6049                my %ref = %$entry;
6050                my $curr = defined $head_at && $ref{'id'} eq $head_at;
6051                if ($alternate) {
6052                        print "<tr class=\"dark\">\n";
6053                } else {
6054                        print "<tr class=\"light\">\n";
6055                }
6056                $alternate ^= 1;
6057                print "<td><i>$ref{'age'}</i></td>\n" .
6058                      ($curr ? "<td class=\"current_head\">" : "<td>") .
6059                      $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'fullname'}),
6060                               -class => "list name"},esc_html($ref{'name'})) .
6061                      "</td>\n" .
6062                      "<td class=\"link\">" .
6063                      $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'fullname'})}, "shortlog") . " | " .
6064                      $cgi->a({-href => href(action=>"log", hash=>$ref{'fullname'})}, "log") . " | " .
6065                      $cgi->a({-href => href(action=>"tree", hash=>$ref{'fullname'}, hash_base=>$ref{'fullname'})}, "tree") .
6066                      "</td>\n" .
6067                      "</tr>";
6068        }
6069        if (defined $extra) {
6070                print "<tr>\n" .
6071                      "<td colspan=\"3\">$extra</td>\n" .
6072                      "</tr>\n";
6073        }
6074        print "</table>\n";
6075}
6076
6077# Display a single remote block
6078sub git_remote_block {
6079        my ($remote, $rdata, $limit, $head) = @_;
6080
6081        my $heads = $rdata->{'heads'};
6082        my $fetch = $rdata->{'fetch'};
6083        my $push = $rdata->{'push'};
6084
6085        my $urls_table = "<table class=\"projects_list\">\n" ;
6086
6087        if (defined $fetch) {
6088                if ($fetch eq $push) {
6089                        $urls_table .= format_repo_url("URL", $fetch);
6090                } else {
6091                        $urls_table .= format_repo_url("Fetch URL", $fetch);
6092                        $urls_table .= format_repo_url("Push URL", $push) if defined $push;
6093                }
6094        } elsif (defined $push) {
6095                $urls_table .= format_repo_url("Push URL", $push);
6096        } else {
6097                $urls_table .= format_repo_url("", "No remote URL");
6098        }
6099
6100        $urls_table .= "</table>\n";
6101
6102        my $dots;
6103        if (defined $limit && $limit < @$heads) {
6104                $dots = $cgi->a({-href => href(action=>"remotes", hash=>$remote)}, "...");
6105        }
6106
6107        print $urls_table;
6108        git_heads_body($heads, $head, 0, $limit, $dots);
6109}
6110
6111# Display a list of remote names with the respective fetch and push URLs
6112sub git_remotes_list {
6113        my ($remotedata, $limit) = @_;
6114        print "<table class=\"heads\">\n";
6115        my $alternate = 1;
6116        my @remotes = sort keys %$remotedata;
6117
6118        my $limited = $limit && $limit < @remotes;
6119
6120        $#remotes = $limit - 1 if $limited;
6121
6122        while (my $remote = shift @remotes) {
6123                my $rdata = $remotedata->{$remote};
6124                my $fetch = $rdata->{'fetch'};
6125                my $push = $rdata->{'push'};
6126                if ($alternate) {
6127                        print "<tr class=\"dark\">\n";
6128                } else {
6129                        print "<tr class=\"light\">\n";
6130                }
6131                $alternate ^= 1;
6132                print "<td>" .
6133                      $cgi->a({-href=> href(action=>'remotes', hash=>$remote),
6134                               -class=> "list name"},esc_html($remote)) .
6135                      "</td>";
6136                print "<td class=\"link\">" .
6137                      (defined $fetch ? $cgi->a({-href=> $fetch}, "fetch") : "fetch") .
6138                      " | " .
6139                      (defined $push ? $cgi->a({-href=> $push}, "push") : "push") .
6140                      "</td>";
6141
6142                print "</tr>\n";
6143        }
6144
6145        if ($limited) {
6146                print "<tr>\n" .
6147                      "<td colspan=\"3\">" .
6148                      $cgi->a({-href => href(action=>"remotes")}, "...") .
6149                      "</td>\n" . "</tr>\n";
6150        }
6151
6152        print "</table>";
6153}
6154
6155# Display remote heads grouped by remote, unless there are too many
6156# remotes, in which case we only display the remote names
6157sub git_remotes_body {
6158        my ($remotedata, $limit, $head) = @_;
6159        if ($limit and $limit < keys %$remotedata) {
6160                git_remotes_list($remotedata, $limit);
6161        } else {
6162                fill_remote_heads($remotedata);
6163                while (my ($remote, $rdata) = each %$remotedata) {
6164                        git_print_section({-class=>"remote", -id=>$remote},
6165                                ["remotes", $remote, $remote], sub {
6166                                        git_remote_block($remote, $rdata, $limit, $head);
6167                                });
6168                }
6169        }
6170}
6171
6172sub git_search_message {
6173        my %co = @_;
6174
6175        my $greptype;
6176        if ($searchtype eq 'commit') {
6177                $greptype = "--grep=";
6178        } elsif ($searchtype eq 'author') {
6179                $greptype = "--author=";
6180        } elsif ($searchtype eq 'committer') {
6181                $greptype = "--committer=";
6182        }
6183        $greptype .= $searchtext;
6184        my @commitlist = parse_commits($hash, 101, (100 * $page), undef,
6185                                       $greptype, '--regexp-ignore-case',
6186                                       $search_use_regexp ? '--extended-regexp' : '--fixed-strings');
6187
6188        my $paging_nav = '';
6189        if ($page > 0) {
6190                $paging_nav .=
6191                        $cgi->a({-href => href(-replay=>1, page=>undef)},
6192                                "first") .
6193                        " &sdot; " .
6194                        $cgi->a({-href => href(-replay=>1, page=>$page-1),
6195                                 -accesskey => "p", -title => "Alt-p"}, "prev");
6196        } else {
6197                $paging_nav .= "first &sdot; prev";
6198        }
6199        my $next_link = '';
6200        if ($#commitlist >= 100) {
6201                $next_link =
6202                        $cgi->a({-href => href(-replay=>1, page=>$page+1),
6203                                 -accesskey => "n", -title => "Alt-n"}, "next");
6204                $paging_nav .= " &sdot; $next_link";
6205        } else {
6206                $paging_nav .= " &sdot; next";
6207        }
6208
6209        git_header_html();
6210
6211        git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
6212        git_print_header_div('commit', esc_html($co{'title'}), $hash);
6213        if ($page == 0 && !@commitlist) {
6214                print "<p>No match.</p>\n";
6215        } else {
6216                git_search_grep_body(\@commitlist, 0, 99, $next_link);
6217        }
6218
6219        git_footer_html();
6220}
6221
6222sub git_search_changes {
6223        my %co = @_;
6224
6225        local $/ = "\n";
6226        open my $fd, '-|', git_cmd(), '--no-pager', 'log', @diff_opts,
6227                '--pretty=format:%H', '--no-abbrev', '--raw', "-S$searchtext",
6228                ($search_use_regexp ? '--pickaxe-regex' : ())
6229                        or die_error(500, "Open git-log failed");
6230
6231        git_header_html();
6232
6233        git_print_page_nav('','', $hash,$co{'tree'},$hash);
6234        git_print_header_div('commit', esc_html($co{'title'}), $hash);
6235
6236        print "<table class=\"pickaxe search\">\n";
6237        my $alternate = 1;
6238        undef %co;
6239        my @files;
6240        while (my $line = <$fd>) {
6241                chomp $line;
6242                next unless $line;
6243
6244                my %set = parse_difftree_raw_line($line);
6245                if (defined $set{'commit'}) {
6246                        # finish previous commit
6247                        if (%co) {
6248                                print "</td>\n" .
6249                                      "<td class=\"link\">" .
6250                                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})},
6251                                              "commit") .
6252                                      " | " .
6253                                      $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'},
6254                                                             hash_base=>$co{'id'})},
6255                                              "tree") .
6256                                      "</td>\n" .
6257                                      "</tr>\n";
6258                        }
6259
6260                        if ($alternate) {
6261                                print "<tr class=\"dark\">\n";
6262                        } else {
6263                                print "<tr class=\"light\">\n";
6264                        }
6265                        $alternate ^= 1;
6266                        %co = parse_commit($set{'commit'});
6267                        my $author = chop_and_escape_str($co{'author_name'}, 15, 5);
6268                        print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
6269                              "<td><i>$author</i></td>\n" .
6270                              "<td>" .
6271                              $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
6272                                      -class => "list subject"},
6273                                      chop_and_escape_str($co{'title'}, 50) . "<br/>");
6274                } elsif (defined $set{'to_id'}) {
6275                        next if ($set{'to_id'} =~ m/^0{40}$/);
6276
6277                        print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
6278                                                     hash=>$set{'to_id'}, file_name=>$set{'to_file'}),
6279                                      -class => "list"},
6280                                      "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
6281                              "<br/>\n";
6282                }
6283        }
6284        close $fd;
6285
6286        # finish last commit (warning: repetition!)
6287        if (%co) {
6288                print "</td>\n" .
6289                      "<td class=\"link\">" .
6290                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})},
6291                              "commit") .
6292                      " | " .
6293                      $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'},
6294                                             hash_base=>$co{'id'})},
6295                              "tree") .
6296                      "</td>\n" .
6297                      "</tr>\n";
6298        }
6299
6300        print "</table>\n";
6301
6302        git_footer_html();
6303}
6304
6305sub git_search_files {
6306        my %co = @_;
6307
6308        local $/ = "\n";
6309        open my $fd, "-|", git_cmd(), 'grep', '-n', '-z',
6310                $search_use_regexp ? ('-E', '-i') : '-F',
6311                $searchtext, $co{'tree'}
6312                        or die_error(500, "Open git-grep failed");
6313
6314        git_header_html();
6315
6316        git_print_page_nav('','', $hash,$co{'tree'},$hash);
6317        git_print_header_div('commit', esc_html($co{'title'}), $hash);
6318
6319        print "<table class=\"grep_search\">\n";
6320        my $alternate = 1;
6321        my $matches = 0;
6322        my $lastfile = '';
6323        my $file_href;
6324        while (my $line = <$fd>) {
6325                chomp $line;
6326                my ($file, $lno, $ltext, $binary);
6327                last if ($matches++ > 1000);
6328                if ($line =~ /^Binary file (.+) matches$/) {
6329                        $file = $1;
6330                        $binary = 1;
6331                } else {
6332                        ($file, $lno, $ltext) = split(/\0/, $line, 3);
6333                        $file =~ s/^$co{'tree'}://;
6334                }
6335                if ($file ne $lastfile) {
6336                        $lastfile and print "</td></tr>\n";
6337                        if ($alternate++) {
6338                                print "<tr class=\"dark\">\n";
6339                        } else {
6340                                print "<tr class=\"light\">\n";
6341                        }
6342                        $file_href = href(action=>"blob", hash_base=>$co{'id'},
6343                                          file_name=>$file);
6344                        print "<td class=\"list\">".
6345                                $cgi->a({-href => $file_href, -class => "list"}, esc_path($file));
6346                        print "</td><td>\n";
6347                        $lastfile = $file;
6348                }
6349                if ($binary) {
6350                        print "<div class=\"binary\">Binary file</div>\n";
6351                } else {
6352                        $ltext = untabify($ltext);
6353                        if ($ltext =~ m/^(.*)($search_regexp)(.*)$/i) {
6354                                $ltext = esc_html($1, -nbsp=>1);
6355                                $ltext .= '<span class="match">';
6356                                $ltext .= esc_html($2, -nbsp=>1);
6357                                $ltext .= '</span>';
6358                                $ltext .= esc_html($3, -nbsp=>1);
6359                        } else {
6360                                $ltext = esc_html($ltext, -nbsp=>1);
6361                        }
6362                        print "<div class=\"pre\">" .
6363                                $cgi->a({-href => $file_href.'#l'.$lno,
6364                                        -class => "linenr"}, sprintf('%4i', $lno)) .
6365                                ' ' .  $ltext . "</div>\n";
6366                }
6367        }
6368        if ($lastfile) {
6369                print "</td></tr>\n";
6370                if ($matches > 1000) {
6371                        print "<div class=\"diff nodifferences\">Too many matches, listing trimmed</div>\n";
6372                }
6373        } else {
6374                print "<div class=\"diff nodifferences\">No matches found</div>\n";
6375        }
6376        close $fd;
6377
6378        print "</table>\n";
6379
6380        git_footer_html();
6381}
6382
6383sub git_search_grep_body {
6384        my ($commitlist, $from, $to, $extra) = @_;
6385        $from = 0 unless defined $from;
6386        $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
6387
6388        print "<table class=\"commit_search\">\n";
6389        my $alternate = 1;
6390        for (my $i = $from; $i <= $to; $i++) {
6391                my %co = %{$commitlist->[$i]};
6392                if (!%co) {
6393                        next;
6394                }
6395                my $commit = $co{'id'};
6396                if ($alternate) {
6397                        print "<tr class=\"dark\">\n";
6398                } else {
6399                        print "<tr class=\"light\">\n";
6400                }
6401                $alternate ^= 1;
6402                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
6403                      format_author_html('td', \%co, 15, 5) .
6404                      "<td>" .
6405                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
6406                               -class => "list subject"},
6407                              chop_and_escape_str($co{'title'}, 50) . "<br/>");
6408                my $comment = $co{'comment'};
6409                foreach my $line (@$comment) {
6410                        if ($line =~ m/^(.*?)($search_regexp)(.*)$/i) {
6411                                my ($lead, $match, $trail) = ($1, $2, $3);
6412                                $match = chop_str($match, 70, 5, 'center');
6413                                my $contextlen = int((80 - length($match))/2);
6414                                $contextlen = 30 if ($contextlen > 30);
6415                                $lead  = chop_str($lead,  $contextlen, 10, 'left');
6416                                $trail = chop_str($trail, $contextlen, 10, 'right');
6417
6418                                $lead  = esc_html($lead);
6419                                $match = esc_html($match);
6420                                $trail = esc_html($trail);
6421
6422                                print "$lead<span class=\"match\">$match</span>$trail<br />";
6423                        }
6424                }
6425                print "</td>\n" .
6426                      "<td class=\"link\">" .
6427                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
6428                      " | " .
6429                      $cgi->a({-href => href(action=>"commitdiff", hash=>$co{'id'})}, "commitdiff") .
6430                      " | " .
6431                      $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
6432                print "</td>\n" .
6433                      "</tr>\n";
6434        }
6435        if (defined $extra) {
6436                print "<tr>\n" .
6437                      "<td colspan=\"3\">$extra</td>\n" .
6438                      "</tr>\n";
6439        }
6440        print "</table>\n";
6441}
6442
6443## ======================================================================
6444## ======================================================================
6445## actions
6446
6447sub git_project_list {
6448        my $order = $input_params{'order'};
6449        if (defined $order && $order !~ m/none|project|descr|owner|age/) {
6450                die_error(400, "Unknown order parameter");
6451        }
6452
6453        my @list = git_get_projects_list($project_filter, $strict_export);
6454        if (!@list) {
6455                die_error(404, "No projects found");
6456        }
6457
6458        git_header_html();
6459        if (defined $home_text && -f $home_text) {
6460                print "<div class=\"index_include\">\n";
6461                insert_file($home_text);
6462                print "</div>\n";
6463        }
6464
6465        git_project_search_form($searchtext, $search_use_regexp);
6466        git_project_list_body(\@list, $order);
6467        git_footer_html();
6468}
6469
6470sub git_forks {
6471        my $order = $input_params{'order'};
6472        if (defined $order && $order !~ m/none|project|descr|owner|age/) {
6473                die_error(400, "Unknown order parameter");
6474        }
6475
6476        my $filter = $project;
6477        $filter =~ s/\.git$//;
6478        my @list = git_get_projects_list($filter);
6479        if (!@list) {
6480                die_error(404, "No forks found");
6481        }
6482
6483        git_header_html();
6484        git_print_page_nav('','');
6485        git_print_header_div('summary', "$project forks");
6486        git_project_list_body(\@list, $order);
6487        git_footer_html();
6488}
6489
6490sub git_project_index {
6491        my @projects = git_get_projects_list($project_filter, $strict_export);
6492        if (!@projects) {
6493                die_error(404, "No projects found");
6494        }
6495
6496        print $cgi->header(
6497                -type => 'text/plain',
6498                -charset => 'utf-8',
6499                -content_disposition => 'inline; filename="index.aux"');
6500
6501        foreach my $pr (@projects) {
6502                if (!exists $pr->{'owner'}) {
6503                        $pr->{'owner'} = git_get_project_owner("$pr->{'path'}");
6504                }
6505
6506                my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
6507                # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
6508                $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
6509                $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
6510                $path  =~ s/ /\+/g;
6511                $owner =~ s/ /\+/g;
6512
6513                print "$path $owner\n";
6514        }
6515}
6516
6517sub git_summary {
6518        my $descr = git_get_project_description($project) || "none";
6519        my %co = parse_commit("HEAD");
6520        my %cd = %co ? parse_date($co{'committer_epoch'}, $co{'committer_tz'}) : ();
6521        my $head = $co{'id'};
6522        my $remote_heads = gitweb_check_feature('remote_heads');
6523
6524        my $owner = git_get_project_owner($project);
6525
6526        my $refs = git_get_references();
6527        # These get_*_list functions return one more to allow us to see if
6528        # there are more ...
6529        my @taglist  = git_get_tags_list(16);
6530        my @headlist = git_get_heads_list(16);
6531        my %remotedata = $remote_heads ? git_get_remotes_list() : ();
6532        my @forklist;
6533        my $check_forks = gitweb_check_feature('forks');
6534
6535        if ($check_forks) {
6536                # find forks of a project
6537                my $filter = $project;
6538                $filter =~ s/\.git$//;
6539                @forklist = git_get_projects_list($filter);
6540                # filter out forks of forks
6541                @forklist = filter_forks_from_projects_list(\@forklist)
6542                        if (@forklist);
6543        }
6544
6545        git_header_html();
6546        git_print_page_nav('summary','', $head);
6547
6548        print "<div class=\"title\">&nbsp;</div>\n";
6549        print "<table class=\"projects_list\">\n" .
6550              "<tr id=\"metadata_desc\"><td>description</td><td>" . esc_html($descr) . "</td></tr>\n";
6551        if ($owner and not $omit_owner) {
6552                print  "<tr id=\"metadata_owner\"><td>owner</td><td>" . esc_html($owner) . "</td></tr>\n";
6553        }
6554        if (defined $cd{'rfc2822'}) {
6555                print "<tr id=\"metadata_lchange\"><td>last change</td>" .
6556                      "<td>".format_timestamp_html(\%cd)."</td></tr>\n";
6557        }
6558
6559        # use per project git URL list in $projectroot/$project/cloneurl
6560        # or make project git URL from git base URL and project name
6561        my $url_tag = "URL";
6562        my @url_list = git_get_project_url_list($project);
6563        @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
6564        foreach my $git_url (@url_list) {
6565                next unless $git_url;
6566                print format_repo_url($url_tag, $git_url);
6567                $url_tag = "";
6568        }
6569
6570        # Tag cloud
6571        my $show_ctags = gitweb_check_feature('ctags');
6572        if ($show_ctags) {
6573                my $ctags = git_get_project_ctags($project);
6574                if (%$ctags) {
6575                        # without ability to add tags, don't show if there are none
6576                        my $cloud = git_populate_project_tagcloud($ctags);
6577                        print "<tr id=\"metadata_ctags\">" .
6578                              "<td>content tags</td>" .
6579                              "<td>".git_show_project_tagcloud($cloud, 48)."</td>" .
6580                              "</tr>\n";
6581                }
6582        }
6583
6584        print "</table>\n";
6585
6586        # If XSS prevention is on, we don't include README.html.
6587        # TODO: Allow a readme in some safe format.
6588        if (!$prevent_xss && -s "$projectroot/$project/README.html") {
6589                print "<div class=\"title\">readme</div>\n" .
6590                      "<div class=\"readme\">\n";
6591                insert_file("$projectroot/$project/README.html");
6592                print "\n</div>\n"; # class="readme"
6593        }
6594
6595        # we need to request one more than 16 (0..15) to check if
6596        # those 16 are all
6597        my @commitlist = $head ? parse_commits($head, 17) : ();
6598        if (@commitlist) {
6599                git_print_header_div('shortlog');
6600                git_shortlog_body(\@commitlist, 0, 15, $refs,
6601                                  $#commitlist <=  15 ? undef :
6602                                  $cgi->a({-href => href(action=>"shortlog")}, "..."));
6603        }
6604
6605        if (@taglist) {
6606                git_print_header_div('tags');
6607                git_tags_body(\@taglist, 0, 15,
6608                              $#taglist <=  15 ? undef :
6609                              $cgi->a({-href => href(action=>"tags")}, "..."));
6610        }
6611
6612        if (@headlist) {
6613                git_print_header_div('heads');
6614                git_heads_body(\@headlist, $head, 0, 15,
6615                               $#headlist <= 15 ? undef :
6616                               $cgi->a({-href => href(action=>"heads")}, "..."));
6617        }
6618
6619        if (%remotedata) {
6620                git_print_header_div('remotes');
6621                git_remotes_body(\%remotedata, 15, $head);
6622        }
6623
6624        if (@forklist) {
6625                git_print_header_div('forks');
6626                git_project_list_body(\@forklist, 'age', 0, 15,
6627                                      $#forklist <= 15 ? undef :
6628                                      $cgi->a({-href => href(action=>"forks")}, "..."),
6629                                      'no_header');
6630        }
6631
6632        git_footer_html();
6633}
6634
6635sub git_tag {
6636        my %tag = parse_tag($hash);
6637
6638        if (! %tag) {
6639                die_error(404, "Unknown tag object");
6640        }
6641
6642        my $head = git_get_head_hash($project);
6643        git_header_html();
6644        git_print_page_nav('','', $head,undef,$head);
6645        git_print_header_div('commit', esc_html($tag{'name'}), $hash);
6646        print "<div class=\"title_text\">\n" .
6647              "<table class=\"object_header\">\n" .
6648              "<tr>\n" .
6649              "<td>object</td>\n" .
6650              "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
6651                               $tag{'object'}) . "</td>\n" .
6652              "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
6653                                              $tag{'type'}) . "</td>\n" .
6654              "</tr>\n";
6655        if (defined($tag{'author'})) {
6656                git_print_authorship_rows(\%tag, 'author');
6657        }
6658        print "</table>\n\n" .
6659              "</div>\n";
6660        print "<div class=\"page_body\">";
6661        my $comment = $tag{'comment'};
6662        foreach my $line (@$comment) {
6663                chomp $line;
6664                print esc_html($line, -nbsp=>1) . "<br/>\n";
6665        }
6666        print "</div>\n";
6667        git_footer_html();
6668}
6669
6670sub git_blame_common {
6671        my $format = shift || 'porcelain';
6672        if ($format eq 'porcelain' && $input_params{'javascript'}) {
6673                $format = 'incremental';
6674                $action = 'blame_incremental'; # for page title etc
6675        }
6676
6677        # permissions
6678        gitweb_check_feature('blame')
6679                or die_error(403, "Blame view not allowed");
6680
6681        # error checking
6682        die_error(400, "No file name given") unless $file_name;
6683        $hash_base ||= git_get_head_hash($project);
6684        die_error(404, "Couldn't find base commit") unless $hash_base;
6685        my %co = parse_commit($hash_base)
6686                or die_error(404, "Commit not found");
6687        my $ftype = "blob";
6688        if (!defined $hash) {
6689                $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
6690                        or die_error(404, "Error looking up file");
6691        } else {
6692                $ftype = git_get_type($hash);
6693                if ($ftype !~ "blob") {
6694                        die_error(400, "Object is not a blob");
6695                }
6696        }
6697
6698        my $fd;
6699        if ($format eq 'incremental') {
6700                # get file contents (as base)
6701                open $fd, "-|", git_cmd(), 'cat-file', 'blob', $hash
6702                        or die_error(500, "Open git-cat-file failed");
6703        } elsif ($format eq 'data') {
6704                # run git-blame --incremental
6705                open $fd, "-|", git_cmd(), "blame", "--incremental",
6706                        $hash_base, "--", $file_name
6707                        or die_error(500, "Open git-blame --incremental failed");
6708        } else {
6709                # run git-blame --porcelain
6710                open $fd, "-|", git_cmd(), "blame", '-p',
6711                        $hash_base, '--', $file_name
6712                        or die_error(500, "Open git-blame --porcelain failed");
6713        }
6714        binmode $fd, ':utf8';
6715
6716        # incremental blame data returns early
6717        if ($format eq 'data') {
6718                print $cgi->header(
6719                        -type=>"text/plain", -charset => "utf-8",
6720                        -status=> "200 OK");
6721                local $| = 1; # output autoflush
6722                while (my $line = <$fd>) {
6723                        print to_utf8($line);
6724                }
6725                close $fd
6726                        or print "ERROR $!\n";
6727
6728                print 'END';
6729                if (defined $t0 && gitweb_check_feature('timed')) {
6730                        print ' '.
6731                              tv_interval($t0, [ gettimeofday() ]).
6732                              ' '.$number_of_git_cmds;
6733                }
6734                print "\n";
6735
6736                return;
6737        }
6738
6739        # page header
6740        git_header_html();
6741        my $formats_nav =
6742                $cgi->a({-href => href(action=>"blob", -replay=>1)},
6743                        "blob") .
6744                " | ";
6745        if ($format eq 'incremental') {
6746                $formats_nav .=
6747                        $cgi->a({-href => href(action=>"blame", javascript=>0, -replay=>1)},
6748                                "blame") . " (non-incremental)";
6749        } else {
6750                $formats_nav .=
6751                        $cgi->a({-href => href(action=>"blame_incremental", -replay=>1)},
6752                                "blame") . " (incremental)";
6753        }
6754        $formats_nav .=
6755                " | " .
6756                $cgi->a({-href => href(action=>"history", -replay=>1)},
6757                        "history") .
6758                " | " .
6759                $cgi->a({-href => href(action=>$action, file_name=>$file_name)},
6760                        "HEAD");
6761        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
6762        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
6763        git_print_page_path($file_name, $ftype, $hash_base);
6764
6765        # page body
6766        if ($format eq 'incremental') {
6767                print "<noscript>\n<div class=\"error\"><center><b>\n".
6768                      "This page requires JavaScript to run.\n Use ".
6769                      $cgi->a({-href => href(action=>'blame',javascript=>0,-replay=>1)},
6770                              'this page').
6771                      " instead.\n".
6772                      "</b></center></div>\n</noscript>\n";
6773
6774                print qq!<div id="progress_bar" style="width: 100%; background-color: yellow"></div>\n!;
6775        }
6776
6777        print qq!<div class="page_body">\n!;
6778        print qq!<div id="progress_info">... / ...</div>\n!
6779                if ($format eq 'incremental');
6780        print qq!<table id="blame_table" class="blame" width="100%">\n!.
6781              #qq!<col width="5.5em" /><col width="2.5em" /><col width="*" />\n!.
6782              qq!<thead>\n!.
6783              qq!<tr><th>Commit</th><th>Line</th><th>Data</th></tr>\n!.
6784              qq!</thead>\n!.
6785              qq!<tbody>\n!;
6786
6787        my @rev_color = qw(light dark);
6788        my $num_colors = scalar(@rev_color);
6789        my $current_color = 0;
6790
6791        if ($format eq 'incremental') {
6792                my $color_class = $rev_color[$current_color];
6793
6794                #contents of a file
6795                my $linenr = 0;
6796        LINE:
6797                while (my $line = <$fd>) {
6798                        chomp $line;
6799                        $linenr++;
6800
6801                        print qq!<tr id="l$linenr" class="$color_class">!.
6802                              qq!<td class="sha1"><a href=""> </a></td>!.
6803                              qq!<td class="linenr">!.
6804                              qq!<a class="linenr" href="">$linenr</a></td>!;
6805                        print qq!<td class="pre">! . esc_html($line) . "</td>\n";
6806                        print qq!</tr>\n!;
6807                }
6808
6809        } else { # porcelain, i.e. ordinary blame
6810                my %metainfo = (); # saves information about commits
6811
6812                # blame data
6813        LINE:
6814                while (my $line = <$fd>) {
6815                        chomp $line;
6816                        # the header: <SHA-1> <src lineno> <dst lineno> [<lines in group>]
6817                        # no <lines in group> for subsequent lines in group of lines
6818                        my ($full_rev, $orig_lineno, $lineno, $group_size) =
6819                           ($line =~ /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/);
6820                        if (!exists $metainfo{$full_rev}) {
6821                                $metainfo{$full_rev} = { 'nprevious' => 0 };
6822                        }
6823                        my $meta = $metainfo{$full_rev};
6824                        my $data;
6825                        while ($data = <$fd>) {
6826                                chomp $data;
6827                                last if ($data =~ s/^\t//); # contents of line
6828                                if ($data =~ /^(\S+)(?: (.*))?$/) {
6829                                        $meta->{$1} = $2 unless exists $meta->{$1};
6830                                }
6831                                if ($data =~ /^previous /) {
6832                                        $meta->{'nprevious'}++;
6833                                }
6834                        }
6835                        my $short_rev = substr($full_rev, 0, 8);
6836                        my $author = $meta->{'author'};
6837                        my %date =
6838                                parse_date($meta->{'author-time'}, $meta->{'author-tz'});
6839                        my $date = $date{'iso-tz'};
6840                        if ($group_size) {
6841                                $current_color = ($current_color + 1) % $num_colors;
6842                        }
6843                        my $tr_class = $rev_color[$current_color];
6844                        $tr_class .= ' boundary' if (exists $meta->{'boundary'});
6845                        $tr_class .= ' no-previous' if ($meta->{'nprevious'} == 0);
6846                        $tr_class .= ' multiple-previous' if ($meta->{'nprevious'} > 1);
6847                        print "<tr id=\"l$lineno\" class=\"$tr_class\">\n";
6848                        if ($group_size) {
6849                                print "<td class=\"sha1\"";
6850                                print " title=\"". esc_html($author) . ", $date\"";
6851                                print " rowspan=\"$group_size\"" if ($group_size > 1);
6852                                print ">";
6853                                print $cgi->a({-href => href(action=>"commit",
6854                                                             hash=>$full_rev,
6855                                                             file_name=>$file_name)},
6856                                              esc_html($short_rev));
6857                                if ($group_size >= 2) {
6858                                        my @author_initials = ($author =~ /\b([[:upper:]])\B/g);
6859                                        if (@author_initials) {
6860                                                print "<br />" .
6861                                                      esc_html(join('', @author_initials));
6862                                                #           or join('.', ...)
6863                                        }
6864                                }
6865                                print "</td>\n";
6866                        }
6867                        # 'previous' <sha1 of parent commit> <filename at commit>
6868                        if (exists $meta->{'previous'} &&
6869                            $meta->{'previous'} =~ /^([a-fA-F0-9]{40}) (.*)$/) {
6870                                $meta->{'parent'} = $1;
6871                                $meta->{'file_parent'} = unquote($2);
6872                        }
6873                        my $linenr_commit =
6874                                exists($meta->{'parent'}) ?
6875                                $meta->{'parent'} : $full_rev;
6876                        my $linenr_filename =
6877                                exists($meta->{'file_parent'}) ?
6878                                $meta->{'file_parent'} : unquote($meta->{'filename'});
6879                        my $blamed = href(action => 'blame',
6880                                          file_name => $linenr_filename,
6881                                          hash_base => $linenr_commit);
6882                        print "<td class=\"linenr\">";
6883                        print $cgi->a({ -href => "$blamed#l$orig_lineno",
6884                                        -class => "linenr" },
6885                                      esc_html($lineno));
6886                        print "</td>";
6887                        print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
6888                        print "</tr>\n";
6889                } # end while
6890
6891        }
6892
6893        # footer
6894        print "</tbody>\n".
6895              "</table>\n"; # class="blame"
6896        print "</div>\n";   # class="blame_body"
6897        close $fd
6898                or print "Reading blob failed\n";
6899
6900        git_footer_html();
6901}
6902
6903sub git_blame {
6904        git_blame_common();
6905}
6906
6907sub git_blame_incremental {
6908        git_blame_common('incremental');
6909}
6910
6911sub git_blame_data {
6912        git_blame_common('data');
6913}
6914
6915sub git_tags {
6916        my $head = git_get_head_hash($project);
6917        git_header_html();
6918        git_print_page_nav('','', $head,undef,$head,format_ref_views('tags'));
6919        git_print_header_div('summary', $project);
6920
6921        my @tagslist = git_get_tags_list();
6922        if (@tagslist) {
6923                git_tags_body(\@tagslist);
6924        }
6925        git_footer_html();
6926}
6927
6928sub git_heads {
6929        my $head = git_get_head_hash($project);
6930        git_header_html();
6931        git_print_page_nav('','', $head,undef,$head,format_ref_views('heads'));
6932        git_print_header_div('summary', $project);
6933
6934        my @headslist = git_get_heads_list();
6935        if (@headslist) {
6936                git_heads_body(\@headslist, $head);
6937        }
6938        git_footer_html();
6939}
6940
6941# used both for single remote view and for list of all the remotes
6942sub git_remotes {
6943        gitweb_check_feature('remote_heads')
6944                or die_error(403, "Remote heads view is disabled");
6945
6946        my $head = git_get_head_hash($project);
6947        my $remote = $input_params{'hash'};
6948
6949        my $remotedata = git_get_remotes_list($remote);
6950        die_error(500, "Unable to get remote information") unless defined $remotedata;
6951
6952        unless (%$remotedata) {
6953                die_error(404, defined $remote ?
6954                        "Remote $remote not found" :
6955                        "No remotes found");
6956        }
6957
6958        git_header_html(undef, undef, -action_extra => $remote);
6959        git_print_page_nav('', '',  $head, undef, $head,
6960                format_ref_views($remote ? '' : 'remotes'));
6961
6962        fill_remote_heads($remotedata);
6963        if (defined $remote) {
6964                git_print_header_div('remotes', "$remote remote for $project");
6965                git_remote_block($remote, $remotedata->{$remote}, undef, $head);
6966        } else {
6967                git_print_header_div('summary', "$project remotes");
6968                git_remotes_body($remotedata, undef, $head);
6969        }
6970
6971        git_footer_html();
6972}
6973
6974sub git_blob_plain {
6975        my $type = shift;
6976        my $expires;
6977
6978        if (!defined $hash) {
6979                if (defined $file_name) {
6980                        my $base = $hash_base || git_get_head_hash($project);
6981                        $hash = git_get_hash_by_path($base, $file_name, "blob")
6982                                or die_error(404, "Cannot find file");
6983                } else {
6984                        die_error(400, "No file name defined");
6985                }
6986        } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
6987                # blobs defined by non-textual hash id's can be cached
6988                $expires = "+1d";
6989        }
6990
6991        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
6992                or die_error(500, "Open git-cat-file blob '$hash' failed");
6993
6994        # content-type (can include charset)
6995        $type = blob_contenttype($fd, $file_name, $type);
6996
6997        # "save as" filename, even when no $file_name is given
6998        my $save_as = "$hash";
6999        if (defined $file_name) {
7000                $save_as = $file_name;
7001        } elsif ($type =~ m/^text\//) {
7002                $save_as .= '.txt';
7003        }
7004
7005        # With XSS prevention on, blobs of all types except a few known safe
7006        # ones are served with "Content-Disposition: attachment" to make sure
7007        # they don't run in our security domain.  For certain image types,
7008        # blob view writes an <img> tag referring to blob_plain view, and we
7009        # want to be sure not to break that by serving the image as an
7010        # attachment (though Firefox 3 doesn't seem to care).
7011        my $sandbox = $prevent_xss &&
7012                $type !~ m!^(?:text/[a-z]+|image/(?:gif|png|jpeg))(?:[ ;]|$)!;
7013
7014        # serve text/* as text/plain
7015        if ($prevent_xss &&
7016            ($type =~ m!^text/[a-z]+\b(.*)$! ||
7017             ($type =~ m!^[a-z]+/[a-z]\+xml\b(.*)$! && -T $fd))) {
7018                my $rest = $1;
7019                $rest = defined $rest ? $rest : '';
7020                $type = "text/plain$rest";
7021        }
7022
7023        print $cgi->header(
7024                -type => $type,
7025                -expires => $expires,
7026                -content_disposition =>
7027                        ($sandbox ? 'attachment' : 'inline')
7028                        . '; filename="' . $save_as . '"');
7029        local $/ = undef;
7030        binmode STDOUT, ':raw';
7031        print <$fd>;
7032        binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
7033        close $fd;
7034}
7035
7036sub git_blob {
7037        my $expires;
7038
7039        if (!defined $hash) {
7040                if (defined $file_name) {
7041                        my $base = $hash_base || git_get_head_hash($project);
7042                        $hash = git_get_hash_by_path($base, $file_name, "blob")
7043                                or die_error(404, "Cannot find file");
7044                } else {
7045                        die_error(400, "No file name defined");
7046                }
7047        } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
7048                # blobs defined by non-textual hash id's can be cached
7049                $expires = "+1d";
7050        }
7051
7052        my $have_blame = gitweb_check_feature('blame');
7053        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
7054                or die_error(500, "Couldn't cat $file_name, $hash");
7055        my $mimetype = blob_mimetype($fd, $file_name);
7056        # use 'blob_plain' (aka 'raw') view for files that cannot be displayed
7057        if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)! && -B $fd) {
7058                close $fd;
7059                return git_blob_plain($mimetype);
7060        }
7061        # we can have blame only for text/* mimetype
7062        $have_blame &&= ($mimetype =~ m!^text/!);
7063
7064        my $highlight = gitweb_check_feature('highlight');
7065        my $syntax = guess_file_syntax($highlight, $mimetype, $file_name);
7066        $fd = run_highlighter($fd, $highlight, $syntax)
7067                if $syntax;
7068
7069        git_header_html(undef, $expires);
7070        my $formats_nav = '';
7071        if (defined $hash_base && (my %co = parse_commit($hash_base))) {
7072                if (defined $file_name) {
7073                        if ($have_blame) {
7074                                $formats_nav .=
7075                                        $cgi->a({-href => href(action=>"blame", -replay=>1)},
7076                                                "blame") .
7077                                        " | ";
7078                        }
7079                        $formats_nav .=
7080                                $cgi->a({-href => href(action=>"history", -replay=>1)},
7081                                        "history") .
7082                                " | " .
7083                                $cgi->a({-href => href(action=>"blob_plain", -replay=>1)},
7084                                        "raw") .
7085                                " | " .
7086                                $cgi->a({-href => href(action=>"blob",
7087                                                       hash_base=>"HEAD", file_name=>$file_name)},
7088                                        "HEAD");
7089                } else {
7090                        $formats_nav .=
7091                                $cgi->a({-href => href(action=>"blob_plain", -replay=>1)},
7092                                        "raw");
7093                }
7094                git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
7095                git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
7096        } else {
7097                print "<div class=\"page_nav\">\n" .
7098                      "<br/><br/></div>\n" .
7099                      "<div class=\"title\">".esc_html($hash)."</div>\n";
7100        }
7101        git_print_page_path($file_name, "blob", $hash_base);
7102        print "<div class=\"page_body\">\n";
7103        if ($mimetype =~ m!^image/!) {
7104                print qq!<img class="blob" type="!.esc_attr($mimetype).qq!"!;
7105                if ($file_name) {
7106                        print qq! alt="!.esc_attr($file_name).qq!" title="!.esc_attr($file_name).qq!"!;
7107                }
7108                print qq! src="! .
7109                      href(action=>"blob_plain", hash=>$hash,
7110                           hash_base=>$hash_base, file_name=>$file_name) .
7111                      qq!" />\n!;
7112        } else {
7113                my $nr;
7114                while (my $line = <$fd>) {
7115                        chomp $line;
7116                        $nr++;
7117                        $line = untabify($line);
7118                        printf qq!<div class="pre"><a id="l%i" href="%s#l%i" class="linenr">%4i</a> %s</div>\n!,
7119                               $nr, esc_attr(href(-replay => 1)), $nr, $nr,
7120                               $syntax ? sanitize($line) : esc_html($line, -nbsp=>1);
7121                }
7122        }
7123        close $fd
7124                or print "Reading blob failed.\n";
7125        print "</div>";
7126        git_footer_html();
7127}
7128
7129sub git_tree {
7130        if (!defined $hash_base) {
7131                $hash_base = "HEAD";
7132        }
7133        if (!defined $hash) {
7134                if (defined $file_name) {
7135                        $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
7136                } else {
7137                        $hash = $hash_base;
7138                }
7139        }
7140        die_error(404, "No such tree") unless defined($hash);
7141
7142        my $show_sizes = gitweb_check_feature('show-sizes');
7143        my $have_blame = gitweb_check_feature('blame');
7144
7145        my @entries = ();
7146        {
7147                local $/ = "\0";
7148                open my $fd, "-|", git_cmd(), "ls-tree", '-z',
7149                        ($show_sizes ? '-l' : ()), @extra_options, $hash
7150                        or die_error(500, "Open git-ls-tree failed");
7151                @entries = map { chomp; $_ } <$fd>;
7152                close $fd
7153                        or die_error(404, "Reading tree failed");
7154        }
7155
7156        my $refs = git_get_references();
7157        my $ref = format_ref_marker($refs, $hash_base);
7158        git_header_html();
7159        my $basedir = '';
7160        if (defined $hash_base && (my %co = parse_commit($hash_base))) {
7161                my @views_nav = ();
7162                if (defined $file_name) {
7163                        push @views_nav,
7164                                $cgi->a({-href => href(action=>"history", -replay=>1)},
7165                                        "history"),
7166                                $cgi->a({-href => href(action=>"tree",
7167                                                       hash_base=>"HEAD", file_name=>$file_name)},
7168                                        "HEAD"),
7169                }
7170                my $snapshot_links = format_snapshot_links($hash);
7171                if (defined $snapshot_links) {
7172                        # FIXME: Should be available when we have no hash base as well.
7173                        push @views_nav, $snapshot_links;
7174                }
7175                git_print_page_nav('tree','', $hash_base, undef, undef,
7176                                   join(' | ', @views_nav));
7177                git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
7178        } else {
7179                undef $hash_base;
7180                print "<div class=\"page_nav\">\n";
7181                print "<br/><br/></div>\n";
7182                print "<div class=\"title\">".esc_html($hash)."</div>\n";
7183        }
7184        if (defined $file_name) {
7185                $basedir = $file_name;
7186                if ($basedir ne '' && substr($basedir, -1) ne '/') {
7187                        $basedir .= '/';
7188                }
7189                git_print_page_path($file_name, 'tree', $hash_base);
7190        }
7191        print "<div class=\"page_body\">\n";
7192        print "<table class=\"tree\">\n";
7193        my $alternate = 1;
7194        # '..' (top directory) link if possible
7195        if (defined $hash_base &&
7196            defined $file_name && $file_name =~ m![^/]+$!) {
7197                if ($alternate) {
7198                        print "<tr class=\"dark\">\n";
7199                } else {
7200                        print "<tr class=\"light\">\n";
7201                }
7202                $alternate ^= 1;
7203
7204                my $up = $file_name;
7205                $up =~ s!/?[^/]+$!!;
7206                undef $up unless $up;
7207                # based on git_print_tree_entry
7208                print '<td class="mode">' . mode_str('040000') . "</td>\n";
7209                print '<td class="size">&nbsp;</td>'."\n" if $show_sizes;
7210                print '<td class="list">';
7211                print $cgi->a({-href => href(action=>"tree",
7212                                             hash_base=>$hash_base,
7213                                             file_name=>$up)},
7214                              "..");
7215                print "</td>\n";
7216                print "<td class=\"link\"></td>\n";
7217
7218                print "</tr>\n";
7219        }
7220        foreach my $line (@entries) {
7221                my %t = parse_ls_tree_line($line, -z => 1, -l => $show_sizes);
7222
7223                if ($alternate) {
7224                        print "<tr class=\"dark\">\n";
7225                } else {
7226                        print "<tr class=\"light\">\n";
7227                }
7228                $alternate ^= 1;
7229
7230                git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
7231
7232                print "</tr>\n";
7233        }
7234        print "</table>\n" .
7235              "</div>";
7236        git_footer_html();
7237}
7238
7239sub sanitize_for_filename {
7240    my $name = shift;
7241
7242    $name =~ s!/!-!g;
7243    $name =~ s/[^[:alnum:]_.-]//g;
7244
7245    return $name;
7246}
7247
7248sub snapshot_name {
7249        my ($project, $hash) = @_;
7250
7251        # path/to/project.git  -> project
7252        # path/to/project/.git -> project
7253        my $name = to_utf8($project);
7254        $name =~ s,([^/])/*\.git$,$1,;
7255        $name = sanitize_for_filename(basename($name));
7256
7257        my $ver = $hash;
7258        if ($hash =~ /^[0-9a-fA-F]+$/) {
7259                # shorten SHA-1 hash
7260                my $full_hash = git_get_full_hash($project, $hash);
7261                if ($full_hash =~ /^$hash/ && length($hash) > 7) {
7262                        $ver = git_get_short_hash($project, $hash);
7263                }
7264        } elsif ($hash =~ m!^refs/tags/(.*)$!) {
7265                # tags don't need shortened SHA-1 hash
7266                $ver = $1;
7267        } else {
7268                # branches and other need shortened SHA-1 hash
7269                my $strip_refs = join '|', map { quotemeta } get_branch_refs();
7270                if ($hash =~ m!^refs/($strip_refs|remotes)/(.*)$!) {
7271                        my $ref_dir = (defined $1) ? $1 : '';
7272                        $ver = $2;
7273
7274                        $ref_dir = sanitize_for_filename($ref_dir);
7275                        # for refs neither in heads nor remotes we want to
7276                        # add a ref dir to archive name
7277                        if ($ref_dir ne '' and $ref_dir ne 'heads' and $ref_dir ne 'remotes') {
7278                                $ver = $ref_dir . '-' . $ver;
7279                        }
7280                }
7281                $ver .= '-' . git_get_short_hash($project, $hash);
7282        }
7283        # special case of sanitization for filename - we change
7284        # slashes to dots instead of dashes
7285        # in case of hierarchical branch names
7286        $ver =~ s!/!.!g;
7287        $ver =~ s/[^[:alnum:]_.-]//g;
7288
7289        # name = project-version_string
7290        $name = "$name-$ver";
7291
7292        return wantarray ? ($name, $name) : $name;
7293}
7294
7295sub exit_if_unmodified_since {
7296        my ($latest_epoch) = @_;
7297        our $cgi;
7298
7299        my $if_modified = $cgi->http('IF_MODIFIED_SINCE');
7300        if (defined $if_modified) {
7301                my $since;
7302                if (eval { require HTTP::Date; 1; }) {
7303                        $since = HTTP::Date::str2time($if_modified);
7304                } elsif (eval { require Time::ParseDate; 1; }) {
7305                        $since = Time::ParseDate::parsedate($if_modified, GMT => 1);
7306                }
7307                if (defined $since && $latest_epoch <= $since) {
7308                        my %latest_date = parse_date($latest_epoch);
7309                        print $cgi->header(
7310                                -last_modified => $latest_date{'rfc2822'},
7311                                -status => '304 Not Modified');
7312                        goto DONE_GITWEB;
7313                }
7314        }
7315}
7316
7317sub git_snapshot {
7318        my $format = $input_params{'snapshot_format'};
7319        if (!@snapshot_fmts) {
7320                die_error(403, "Snapshots not allowed");
7321        }
7322        # default to first supported snapshot format
7323        $format ||= $snapshot_fmts[0];
7324        if ($format !~ m/^[a-z0-9]+$/) {
7325                die_error(400, "Invalid snapshot format parameter");
7326        } elsif (!exists($known_snapshot_formats{$format})) {
7327                die_error(400, "Unknown snapshot format");
7328        } elsif ($known_snapshot_formats{$format}{'disabled'}) {
7329                die_error(403, "Snapshot format not allowed");
7330        } elsif (!grep($_ eq $format, @snapshot_fmts)) {
7331                die_error(403, "Unsupported snapshot format");
7332        }
7333
7334        my $type = git_get_type("$hash^{}");
7335        if (!$type) {
7336                die_error(404, 'Object does not exist');
7337        }  elsif ($type eq 'blob') {
7338                die_error(400, 'Object is not a tree-ish');
7339        }
7340
7341        my ($name, $prefix) = snapshot_name($project, $hash);
7342        my $filename = "$name$known_snapshot_formats{$format}{'suffix'}";
7343
7344        my %co = parse_commit($hash);
7345        exit_if_unmodified_since($co{'committer_epoch'}) if %co;
7346
7347        my $cmd = quote_command(
7348                git_cmd(), 'archive',
7349                "--format=$known_snapshot_formats{$format}{'format'}",
7350                "--prefix=$prefix/", $hash);
7351        if (exists $known_snapshot_formats{$format}{'compressor'}) {
7352                $cmd .= ' | ' . quote_command(@{$known_snapshot_formats{$format}{'compressor'}});
7353        }
7354
7355        $filename =~ s/(["\\])/\\$1/g;
7356        my %latest_date;
7357        if (%co) {
7358                %latest_date = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
7359        }
7360
7361        print $cgi->header(
7362                -type => $known_snapshot_formats{$format}{'type'},
7363                -content_disposition => 'inline; filename="' . $filename . '"',
7364                %co ? (-last_modified => $latest_date{'rfc2822'}) : (),
7365                -status => '200 OK');
7366
7367        open my $fd, "-|", $cmd
7368                or die_error(500, "Execute git-archive failed");
7369        binmode STDOUT, ':raw';
7370        print <$fd>;
7371        binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
7372        close $fd;
7373}
7374
7375sub git_log_generic {
7376        my ($fmt_name, $body_subr, $base, $parent, $file_name, $file_hash) = @_;
7377
7378        my $head = git_get_head_hash($project);
7379        if (!defined $base) {
7380                $base = $head;
7381        }
7382        if (!defined $page) {
7383                $page = 0;
7384        }
7385        my $refs = git_get_references();
7386
7387        my $commit_hash = $base;
7388        if (defined $parent) {
7389                $commit_hash = "$parent..$base";
7390        }
7391        my @commitlist =
7392                parse_commits($commit_hash, 101, (100 * $page),
7393                              defined $file_name ? ($file_name, "--full-history") : ());
7394
7395        my $ftype;
7396        if (!defined $file_hash && defined $file_name) {
7397                # some commits could have deleted file in question,
7398                # and not have it in tree, but one of them has to have it
7399                for (my $i = 0; $i < @commitlist; $i++) {
7400                        $file_hash = git_get_hash_by_path($commitlist[$i]{'id'}, $file_name);
7401                        last if defined $file_hash;
7402                }
7403        }
7404        if (defined $file_hash) {
7405                $ftype = git_get_type($file_hash);
7406        }
7407        if (defined $file_name && !defined $ftype) {
7408                die_error(500, "Unknown type of object");
7409        }
7410        my %co;
7411        if (defined $file_name) {
7412                %co = parse_commit($base)
7413                        or die_error(404, "Unknown commit object");
7414        }
7415
7416
7417        my $paging_nav = format_paging_nav($fmt_name, $page, $#commitlist >= 100);
7418        my $next_link = '';
7419        if ($#commitlist >= 100) {
7420                $next_link =
7421                        $cgi->a({-href => href(-replay=>1, page=>$page+1),
7422                                 -accesskey => "n", -title => "Alt-n"}, "next");
7423        }
7424        my $patch_max = gitweb_get_feature('patches');
7425        if ($patch_max && !defined $file_name) {
7426                if ($patch_max < 0 || @commitlist <= $patch_max) {
7427                        $paging_nav .= " &sdot; " .
7428                                $cgi->a({-href => href(action=>"patches", -replay=>1)},
7429                                        "patches");
7430                }
7431        }
7432
7433        git_header_html();
7434        git_print_page_nav($fmt_name,'', $hash,$hash,$hash, $paging_nav);
7435        if (defined $file_name) {
7436                git_print_header_div('commit', esc_html($co{'title'}), $base);
7437        } else {
7438                git_print_header_div('summary', $project)
7439        }
7440        git_print_page_path($file_name, $ftype, $hash_base)
7441                if (defined $file_name);
7442
7443        $body_subr->(\@commitlist, 0, 99, $refs, $next_link,
7444                     $file_name, $file_hash, $ftype);
7445
7446        git_footer_html();
7447}
7448
7449sub git_log {
7450        git_log_generic('log', \&git_log_body,
7451                        $hash, $hash_parent);
7452}
7453
7454sub git_commit {
7455        $hash ||= $hash_base || "HEAD";
7456        my %co = parse_commit($hash)
7457            or die_error(404, "Unknown commit object");
7458
7459        my $parent  = $co{'parent'};
7460        my $parents = $co{'parents'}; # listref
7461
7462        # we need to prepare $formats_nav before any parameter munging
7463        my $formats_nav;
7464        if (!defined $parent) {
7465                # --root commitdiff
7466                $formats_nav .= '(initial)';
7467        } elsif (@$parents == 1) {
7468                # single parent commit
7469                $formats_nav .=
7470                        '(parent: ' .
7471                        $cgi->a({-href => href(action=>"commit",
7472                                               hash=>$parent)},
7473                                esc_html(substr($parent, 0, 7))) .
7474                        ')';
7475        } else {
7476                # merge commit
7477                $formats_nav .=
7478                        '(merge: ' .
7479                        join(' ', map {
7480                                $cgi->a({-href => href(action=>"commit",
7481                                                       hash=>$_)},
7482                                        esc_html(substr($_, 0, 7)));
7483                        } @$parents ) .
7484                        ')';
7485        }
7486        if (gitweb_check_feature('patches') && @$parents <= 1) {
7487                $formats_nav .= " | " .
7488                        $cgi->a({-href => href(action=>"patch", -replay=>1)},
7489                                "patch");
7490        }
7491
7492        if (!defined $parent) {
7493                $parent = "--root";
7494        }
7495        my @difftree;
7496        open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
7497                @diff_opts,
7498                (@$parents <= 1 ? $parent : '-c'),
7499                $hash, "--"
7500                or die_error(500, "Open git-diff-tree failed");
7501        @difftree = map { chomp; $_ } <$fd>;
7502        close $fd or die_error(404, "Reading git-diff-tree failed");
7503
7504        # non-textual hash id's can be cached
7505        my $expires;
7506        if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
7507                $expires = "+1d";
7508        }
7509        my $refs = git_get_references();
7510        my $ref = format_ref_marker($refs, $co{'id'});
7511
7512        git_header_html(undef, $expires);
7513        git_print_page_nav('commit', '',
7514                           $hash, $co{'tree'}, $hash,
7515                           $formats_nav);
7516
7517        if (defined $co{'parent'}) {
7518                git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
7519        } else {
7520                git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
7521        }
7522        print "<div class=\"title_text\">\n" .
7523              "<table class=\"object_header\">\n";
7524        git_print_authorship_rows(\%co);
7525        print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
7526        print "<tr>" .
7527              "<td>tree</td>" .
7528              "<td class=\"sha1\">" .
7529              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
7530                       class => "list"}, $co{'tree'}) .
7531              "</td>" .
7532              "<td class=\"link\">" .
7533              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
7534                      "tree");
7535        my $snapshot_links = format_snapshot_links($hash);
7536        if (defined $snapshot_links) {
7537                print " | " . $snapshot_links;
7538        }
7539        print "</td>" .
7540              "</tr>\n";
7541
7542        foreach my $par (@$parents) {
7543                print "<tr>" .
7544                      "<td>parent</td>" .
7545                      "<td class=\"sha1\">" .
7546                      $cgi->a({-href => href(action=>"commit", hash=>$par),
7547                               class => "list"}, $par) .
7548                      "</td>" .
7549                      "<td class=\"link\">" .
7550                      $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
7551                      " | " .
7552                      $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
7553                      "</td>" .
7554                      "</tr>\n";
7555        }
7556        print "</table>".
7557              "</div>\n";
7558
7559        print "<div class=\"page_body\">\n";
7560        git_print_log($co{'comment'});
7561        print "</div>\n";
7562
7563        git_difftree_body(\@difftree, $hash, @$parents);
7564
7565        git_footer_html();
7566}
7567
7568sub git_object {
7569        # object is defined by:
7570        # - hash or hash_base alone
7571        # - hash_base and file_name
7572        my $type;
7573
7574        # - hash or hash_base alone
7575        if ($hash || ($hash_base && !defined $file_name)) {
7576                my $object_id = $hash || $hash_base;
7577
7578                open my $fd, "-|", quote_command(
7579                        git_cmd(), 'cat-file', '-t', $object_id) . ' 2> /dev/null'
7580                        or die_error(404, "Object does not exist");
7581                $type = <$fd>;
7582                defined $type && chomp $type;
7583                close $fd
7584                        or die_error(404, "Object does not exist");
7585
7586        # - hash_base and file_name
7587        } elsif ($hash_base && defined $file_name) {
7588                $file_name =~ s,/+$,,;
7589
7590                system(git_cmd(), "cat-file", '-e', $hash_base) == 0
7591                        or die_error(404, "Base object does not exist");
7592
7593                # here errors should not happen
7594                open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
7595                        or die_error(500, "Open git-ls-tree failed");
7596                my $line = <$fd>;
7597                close $fd;
7598
7599                #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
7600                unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
7601                        die_error(404, "File or directory for given base does not exist");
7602                }
7603                $type = $2;
7604                $hash = $3;
7605        } else {
7606                die_error(400, "Not enough information to find object");
7607        }
7608
7609        print $cgi->redirect(-uri => href(action=>$type, -full=>1,
7610                                          hash=>$hash, hash_base=>$hash_base,
7611                                          file_name=>$file_name),
7612                             -status => '302 Found');
7613}
7614
7615sub git_blobdiff {
7616        my $format = shift || 'html';
7617        my $diff_style = $input_params{'diff_style'} || 'inline';
7618
7619        my $fd;
7620        my @difftree;
7621        my %diffinfo;
7622        my $expires;
7623
7624        # preparing $fd and %diffinfo for git_patchset_body
7625        # new style URI
7626        if (defined $hash_base && defined $hash_parent_base) {
7627                if (defined $file_name) {
7628                        # read raw output
7629                        open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
7630                                $hash_parent_base, $hash_base,
7631                                "--", (defined $file_parent ? $file_parent : ()), $file_name
7632                                or die_error(500, "Open git-diff-tree failed");
7633                        @difftree = map { chomp; $_ } <$fd>;
7634                        close $fd
7635                                or die_error(404, "Reading git-diff-tree failed");
7636                        @difftree
7637                                or die_error(404, "Blob diff not found");
7638
7639                } elsif (defined $hash &&
7640                         $hash =~ /[0-9a-fA-F]{40}/) {
7641                        # try to find filename from $hash
7642
7643                        # read filtered raw output
7644                        open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
7645                                $hash_parent_base, $hash_base, "--"
7646                                or die_error(500, "Open git-diff-tree failed");
7647                        @difftree =
7648                                # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
7649                                # $hash == to_id
7650                                grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
7651                                map { chomp; $_ } <$fd>;
7652                        close $fd
7653                                or die_error(404, "Reading git-diff-tree failed");
7654                        @difftree
7655                                or die_error(404, "Blob diff not found");
7656
7657                } else {
7658                        die_error(400, "Missing one of the blob diff parameters");
7659                }
7660
7661                if (@difftree > 1) {
7662                        die_error(400, "Ambiguous blob diff specification");
7663                }
7664
7665                %diffinfo = parse_difftree_raw_line($difftree[0]);
7666                $file_parent ||= $diffinfo{'from_file'} || $file_name;
7667                $file_name   ||= $diffinfo{'to_file'};
7668
7669                $hash_parent ||= $diffinfo{'from_id'};
7670                $hash        ||= $diffinfo{'to_id'};
7671
7672                # non-textual hash id's can be cached
7673                if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
7674                    $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
7675                        $expires = '+1d';
7676                }
7677
7678                # open patch output
7679                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
7680                        '-p', ($format eq 'html' ? "--full-index" : ()),
7681                        $hash_parent_base, $hash_base,
7682                        "--", (defined $file_parent ? $file_parent : ()), $file_name
7683                        or die_error(500, "Open git-diff-tree failed");
7684        }
7685
7686        # old/legacy style URI -- not generated anymore since 1.4.3.
7687        if (!%diffinfo) {
7688                die_error('404 Not Found', "Missing one of the blob diff parameters")
7689        }
7690
7691        # header
7692        if ($format eq 'html') {
7693                my $formats_nav =
7694                        $cgi->a({-href => href(action=>"blobdiff_plain", -replay=>1)},
7695                                "raw");
7696                $formats_nav .= diff_style_nav($diff_style);
7697                git_header_html(undef, $expires);
7698                if (defined $hash_base && (my %co = parse_commit($hash_base))) {
7699                        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
7700                        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
7701                } else {
7702                        print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
7703                        print "<div class=\"title\">".esc_html("$hash vs $hash_parent")."</div>\n";
7704                }
7705                if (defined $file_name) {
7706                        git_print_page_path($file_name, "blob", $hash_base);
7707                } else {
7708                        print "<div class=\"page_path\"></div>\n";
7709                }
7710
7711        } elsif ($format eq 'plain') {
7712                print $cgi->header(
7713                        -type => 'text/plain',
7714                        -charset => 'utf-8',
7715                        -expires => $expires,
7716                        -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
7717
7718                print "X-Git-Url: " . $cgi->self_url() . "\n\n";
7719
7720        } else {
7721                die_error(400, "Unknown blobdiff format");
7722        }
7723
7724        # patch
7725        if ($format eq 'html') {
7726                print "<div class=\"page_body\">\n";
7727
7728                git_patchset_body($fd, $diff_style,
7729                                  [ \%diffinfo ], $hash_base, $hash_parent_base);
7730                close $fd;
7731
7732                print "</div>\n"; # class="page_body"
7733                git_footer_html();
7734
7735        } else {
7736                while (my $line = <$fd>) {
7737                        $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
7738                        $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
7739
7740                        print $line;
7741
7742                        last if $line =~ m!^\+\+\+!;
7743                }
7744                local $/ = undef;
7745                print <$fd>;
7746                close $fd;
7747        }
7748}
7749
7750sub git_blobdiff_plain {
7751        git_blobdiff('plain');
7752}
7753
7754# assumes that it is added as later part of already existing navigation,
7755# so it returns "| foo | bar" rather than just "foo | bar"
7756sub diff_style_nav {
7757        my ($diff_style, $is_combined) = @_;
7758        $diff_style ||= 'inline';
7759
7760        return "" if ($is_combined);
7761
7762        my @styles = (inline => 'inline', 'sidebyside' => 'side by side');
7763        my %styles = @styles;
7764        @styles =
7765                @styles[ map { $_ * 2 } 0..$#styles/2 ];
7766
7767        return join '',
7768                map { " | ".$_ }
7769                map {
7770                        $_ eq $diff_style ? $styles{$_} :
7771                        $cgi->a({-href => href(-replay=>1, diff_style => $_)}, $styles{$_})
7772                } @styles;
7773}
7774
7775sub git_commitdiff {
7776        my %params = @_;
7777        my $format = $params{-format} || 'html';
7778        my $diff_style = $input_params{'diff_style'} || 'inline';
7779
7780        my ($patch_max) = gitweb_get_feature('patches');
7781        if ($format eq 'patch') {
7782                die_error(403, "Patch view not allowed") unless $patch_max;
7783        }
7784
7785        $hash ||= $hash_base || "HEAD";
7786        my %co = parse_commit($hash)
7787            or die_error(404, "Unknown commit object");
7788
7789        # choose format for commitdiff for merge
7790        if (! defined $hash_parent && @{$co{'parents'}} > 1) {
7791                $hash_parent = '--cc';
7792        }
7793        # we need to prepare $formats_nav before almost any parameter munging
7794        my $formats_nav;
7795        if ($format eq 'html') {
7796                $formats_nav =
7797                        $cgi->a({-href => href(action=>"commitdiff_plain", -replay=>1)},
7798                                "raw");
7799                if ($patch_max && @{$co{'parents'}} <= 1) {
7800                        $formats_nav .= " | " .
7801                                $cgi->a({-href => href(action=>"patch", -replay=>1)},
7802                                        "patch");
7803                }
7804                $formats_nav .= diff_style_nav($diff_style, @{$co{'parents'}} > 1);
7805
7806                if (defined $hash_parent &&
7807                    $hash_parent ne '-c' && $hash_parent ne '--cc') {
7808                        # commitdiff with two commits given
7809                        my $hash_parent_short = $hash_parent;
7810                        if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
7811                                $hash_parent_short = substr($hash_parent, 0, 7);
7812                        }
7813                        $formats_nav .=
7814                                ' (from';
7815                        for (my $i = 0; $i < @{$co{'parents'}}; $i++) {
7816                                if ($co{'parents'}[$i] eq $hash_parent) {
7817                                        $formats_nav .= ' parent ' . ($i+1);
7818                                        last;
7819                                }
7820                        }
7821                        $formats_nav .= ': ' .
7822                                $cgi->a({-href => href(-replay=>1,
7823                                                       hash=>$hash_parent, hash_base=>undef)},
7824                                        esc_html($hash_parent_short)) .
7825                                ')';
7826                } elsif (!$co{'parent'}) {
7827                        # --root commitdiff
7828                        $formats_nav .= ' (initial)';
7829                } elsif (scalar @{$co{'parents'}} == 1) {
7830                        # single parent commit
7831                        $formats_nav .=
7832                                ' (parent: ' .
7833                                $cgi->a({-href => href(-replay=>1,
7834                                                       hash=>$co{'parent'}, hash_base=>undef)},
7835                                        esc_html(substr($co{'parent'}, 0, 7))) .
7836                                ')';
7837                } else {
7838                        # merge commit
7839                        if ($hash_parent eq '--cc') {
7840                                $formats_nav .= ' | ' .
7841                                        $cgi->a({-href => href(-replay=>1,
7842                                                               hash=>$hash, hash_parent=>'-c')},
7843                                                'combined');
7844                        } else { # $hash_parent eq '-c'
7845                                $formats_nav .= ' | ' .
7846                                        $cgi->a({-href => href(-replay=>1,
7847                                                               hash=>$hash, hash_parent=>'--cc')},
7848                                                'compact');
7849                        }
7850                        $formats_nav .=
7851                                ' (merge: ' .
7852                                join(' ', map {
7853                                        $cgi->a({-href => href(-replay=>1,
7854                                                               hash=>$_, hash_base=>undef)},
7855                                                esc_html(substr($_, 0, 7)));
7856                                } @{$co{'parents'}} ) .
7857                                ')';
7858                }
7859        }
7860
7861        my $hash_parent_param = $hash_parent;
7862        if (!defined $hash_parent_param) {
7863                # --cc for multiple parents, --root for parentless
7864                $hash_parent_param =
7865                        @{$co{'parents'}} > 1 ? '--cc' : $co{'parent'} || '--root';
7866        }
7867
7868        # read commitdiff
7869        my $fd;
7870        my @difftree;
7871        if ($format eq 'html') {
7872                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
7873                        "--no-commit-id", "--patch-with-raw", "--full-index",
7874                        $hash_parent_param, $hash, "--"
7875                        or die_error(500, "Open git-diff-tree failed");
7876
7877                while (my $line = <$fd>) {
7878                        chomp $line;
7879                        # empty line ends raw part of diff-tree output
7880                        last unless $line;
7881                        push @difftree, scalar parse_difftree_raw_line($line);
7882                }
7883
7884        } elsif ($format eq 'plain') {
7885                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
7886                        '-p', $hash_parent_param, $hash, "--"
7887                        or die_error(500, "Open git-diff-tree failed");
7888        } elsif ($format eq 'patch') {
7889                # For commit ranges, we limit the output to the number of
7890                # patches specified in the 'patches' feature.
7891                # For single commits, we limit the output to a single patch,
7892                # diverging from the git-format-patch default.
7893                my @commit_spec = ();
7894                if ($hash_parent) {
7895                        if ($patch_max > 0) {
7896                                push @commit_spec, "-$patch_max";
7897                        }
7898                        push @commit_spec, '-n', "$hash_parent..$hash";
7899                } else {
7900                        if ($params{-single}) {
7901                                push @commit_spec, '-1';
7902                        } else {
7903                                if ($patch_max > 0) {
7904                                        push @commit_spec, "-$patch_max";
7905                                }
7906                                push @commit_spec, "-n";
7907                        }
7908                        push @commit_spec, '--root', $hash;
7909                }
7910                open $fd, "-|", git_cmd(), "format-patch", @diff_opts,
7911                        '--encoding=utf8', '--stdout', @commit_spec
7912                        or die_error(500, "Open git-format-patch failed");
7913        } else {
7914                die_error(400, "Unknown commitdiff format");
7915        }
7916
7917        # non-textual hash id's can be cached
7918        my $expires;
7919        if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
7920                $expires = "+1d";
7921        }
7922
7923        # write commit message
7924        if ($format eq 'html') {
7925                my $refs = git_get_references();
7926                my $ref = format_ref_marker($refs, $co{'id'});
7927
7928                git_header_html(undef, $expires);
7929                git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
7930                git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
7931                print "<div class=\"title_text\">\n" .
7932                      "<table class=\"object_header\">\n";
7933                git_print_authorship_rows(\%co);
7934                print "</table>".
7935                      "</div>\n";
7936                print "<div class=\"page_body\">\n";
7937                if (@{$co{'comment'}} > 1) {
7938                        print "<div class=\"log\">\n";
7939                        git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
7940                        print "</div>\n"; # class="log"
7941                }
7942
7943        } elsif ($format eq 'plain') {
7944                my $refs = git_get_references("tags");
7945                my $tagname = git_get_rev_name_tags($hash);
7946                my $filename = basename($project) . "-$hash.patch";
7947
7948                print $cgi->header(
7949                        -type => 'text/plain',
7950                        -charset => 'utf-8',
7951                        -expires => $expires,
7952                        -content_disposition => 'inline; filename="' . "$filename" . '"');
7953                my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
7954                print "From: " . to_utf8($co{'author'}) . "\n";
7955                print "Date: $ad{'rfc2822'} ($ad{'tz_local'})\n";
7956                print "Subject: " . to_utf8($co{'title'}) . "\n";
7957
7958                print "X-Git-Tag: $tagname\n" if $tagname;
7959                print "X-Git-Url: " . $cgi->self_url() . "\n\n";
7960
7961                foreach my $line (@{$co{'comment'}}) {
7962                        print to_utf8($line) . "\n";
7963                }
7964                print "---\n\n";
7965        } elsif ($format eq 'patch') {
7966                my $filename = basename($project) . "-$hash.patch";
7967
7968                print $cgi->header(
7969                        -type => 'text/plain',
7970                        -charset => 'utf-8',
7971                        -expires => $expires,
7972                        -content_disposition => 'inline; filename="' . "$filename" . '"');
7973        }
7974
7975        # write patch
7976        if ($format eq 'html') {
7977                my $use_parents = !defined $hash_parent ||
7978                        $hash_parent eq '-c' || $hash_parent eq '--cc';
7979                git_difftree_body(\@difftree, $hash,
7980                                  $use_parents ? @{$co{'parents'}} : $hash_parent);
7981                print "<br/>\n";
7982
7983                git_patchset_body($fd, $diff_style,
7984                                  \@difftree, $hash,
7985                                  $use_parents ? @{$co{'parents'}} : $hash_parent);
7986                close $fd;
7987                print "</div>\n"; # class="page_body"
7988                git_footer_html();
7989
7990        } elsif ($format eq 'plain') {
7991                local $/ = undef;
7992                print <$fd>;
7993                close $fd
7994                        or print "Reading git-diff-tree failed\n";
7995        } elsif ($format eq 'patch') {
7996                local $/ = undef;
7997                print <$fd>;
7998                close $fd
7999                        or print "Reading git-format-patch failed\n";
8000        }
8001}
8002
8003sub git_commitdiff_plain {
8004        git_commitdiff(-format => 'plain');
8005}
8006
8007# format-patch-style patches
8008sub git_patch {
8009        git_commitdiff(-format => 'patch', -single => 1);
8010}
8011
8012sub git_patches {
8013        git_commitdiff(-format => 'patch');
8014}
8015
8016sub git_history {
8017        git_log_generic('history', \&git_history_body,
8018                        $hash_base, $hash_parent_base,
8019                        $file_name, $hash);
8020}
8021
8022sub git_search {
8023        $searchtype ||= 'commit';
8024
8025        # check if appropriate features are enabled
8026        gitweb_check_feature('search')
8027                or die_error(403, "Search is disabled");
8028        if ($searchtype eq 'pickaxe') {
8029                # pickaxe may take all resources of your box and run for several minutes
8030                # with every query - so decide by yourself how public you make this feature
8031                gitweb_check_feature('pickaxe')
8032                        or die_error(403, "Pickaxe search is disabled");
8033        }
8034        if ($searchtype eq 'grep') {
8035                # grep search might be potentially CPU-intensive, too
8036                gitweb_check_feature('grep')
8037                        or die_error(403, "Grep search is disabled");
8038        }
8039
8040        if (!defined $searchtext) {
8041                die_error(400, "Text field is empty");
8042        }
8043        if (!defined $hash) {
8044                $hash = git_get_head_hash($project);
8045        }
8046        my %co = parse_commit($hash);
8047        if (!%co) {
8048                die_error(404, "Unknown commit object");
8049        }
8050        if (!defined $page) {
8051                $page = 0;
8052        }
8053
8054        if ($searchtype eq 'commit' ||
8055            $searchtype eq 'author' ||
8056            $searchtype eq 'committer') {
8057                git_search_message(%co);
8058        } elsif ($searchtype eq 'pickaxe') {
8059                git_search_changes(%co);
8060        } elsif ($searchtype eq 'grep') {
8061                git_search_files(%co);
8062        } else {
8063                die_error(400, "Unknown search type");
8064        }
8065}
8066
8067sub git_search_help {
8068        git_header_html();
8069        git_print_page_nav('','', $hash,$hash,$hash);
8070        print <<EOT;
8071<p><strong>Pattern</strong> is by default a normal string that is matched precisely (but without
8072regard to case, except in the case of pickaxe). However, when you check the <em>re</em> checkbox,
8073the pattern entered is recognized as the POSIX extended
8074<a href="http://en.wikipedia.org/wiki/Regular_expression">regular expression</a> (also case
8075insensitive).</p>
8076<dl>
8077<dt><b>commit</b></dt>
8078<dd>The commit messages and authorship information will be scanned for the given pattern.</dd>
8079EOT
8080        my $have_grep = gitweb_check_feature('grep');
8081        if ($have_grep) {
8082                print <<EOT;
8083<dt><b>grep</b></dt>
8084<dd>All files in the currently selected tree (HEAD unless you are explicitly browsing
8085    a different one) are searched for the given pattern. On large trees, this search can take
8086a while and put some strain on the server, so please use it with some consideration. Note that
8087due to git-grep peculiarity, currently if regexp mode is turned off, the matches are
8088case-sensitive.</dd>
8089EOT
8090        }
8091        print <<EOT;
8092<dt><b>author</b></dt>
8093<dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given pattern.</dd>
8094<dt><b>committer</b></dt>
8095<dd>Name and e-mail of the committer and date of commit will be scanned for the given pattern.</dd>
8096EOT
8097        my $have_pickaxe = gitweb_check_feature('pickaxe');
8098        if ($have_pickaxe) {
8099                print <<EOT;
8100<dt><b>pickaxe</b></dt>
8101<dd>All commits that caused the string to appear or disappear from any file (changes that
8102added, removed or "modified" the string) will be listed. This search can take a while and
8103takes a lot of strain on the server, so please use it wisely. Note that since you may be
8104interested even in changes just changing the case as well, this search is case sensitive.</dd>
8105EOT
8106        }
8107        print "</dl>\n";
8108        git_footer_html();
8109}
8110
8111sub git_shortlog {
8112        git_log_generic('shortlog', \&git_shortlog_body,
8113                        $hash, $hash_parent);
8114}
8115
8116## ......................................................................
8117## feeds (RSS, Atom; OPML)
8118
8119sub git_feed {
8120        my $format = shift || 'atom';
8121        my $have_blame = gitweb_check_feature('blame');
8122
8123        # Atom: http://www.atomenabled.org/developers/syndication/
8124        # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
8125        if ($format ne 'rss' && $format ne 'atom') {
8126                die_error(400, "Unknown web feed format");
8127        }
8128
8129        # log/feed of current (HEAD) branch, log of given branch, history of file/directory
8130        my $head = $hash || 'HEAD';
8131        my @commitlist = parse_commits($head, 150, 0, $file_name);
8132
8133        my %latest_commit;
8134        my %latest_date;
8135        my $content_type = "application/$format+xml";
8136        if (defined $cgi->http('HTTP_ACCEPT') &&
8137                 $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
8138                # browser (feed reader) prefers text/xml
8139                $content_type = 'text/xml';
8140        }
8141        if (defined($commitlist[0])) {
8142                %latest_commit = %{$commitlist[0]};
8143                my $latest_epoch = $latest_commit{'committer_epoch'};
8144                exit_if_unmodified_since($latest_epoch);
8145                %latest_date = parse_date($latest_epoch, $latest_commit{'committer_tz'});
8146        }
8147        print $cgi->header(
8148                -type => $content_type,
8149                -charset => 'utf-8',
8150                %latest_date ? (-last_modified => $latest_date{'rfc2822'}) : (),
8151                -status => '200 OK');
8152
8153        # Optimization: skip generating the body if client asks only
8154        # for Last-Modified date.
8155        return if ($cgi->request_method() eq 'HEAD');
8156
8157        # header variables
8158        my $title = "$site_name - $project/$action";
8159        my $feed_type = 'log';
8160        if (defined $hash) {
8161                $title .= " - '$hash'";
8162                $feed_type = 'branch log';
8163                if (defined $file_name) {
8164                        $title .= " :: $file_name";
8165                        $feed_type = 'history';
8166                }
8167        } elsif (defined $file_name) {
8168                $title .= " - $file_name";
8169                $feed_type = 'history';
8170        }
8171        $title .= " $feed_type";
8172        $title = esc_html($title);
8173        my $descr = git_get_project_description($project);
8174        if (defined $descr) {
8175                $descr = esc_html($descr);
8176        } else {
8177                $descr = "$project " .
8178                         ($format eq 'rss' ? 'RSS' : 'Atom') .
8179                         " feed";
8180        }
8181        my $owner = git_get_project_owner($project);
8182        $owner = esc_html($owner);
8183
8184        #header
8185        my $alt_url;
8186        if (defined $file_name) {
8187                $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
8188        } elsif (defined $hash) {
8189                $alt_url = href(-full=>1, action=>"log", hash=>$hash);
8190        } else {
8191                $alt_url = href(-full=>1, action=>"summary");
8192        }
8193        print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
8194        if ($format eq 'rss') {
8195                print <<XML;
8196<rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
8197<channel>
8198XML
8199                print "<title>$title</title>\n" .
8200                      "<link>$alt_url</link>\n" .
8201                      "<description>$descr</description>\n" .
8202                      "<language>en</language>\n" .
8203                      # project owner is responsible for 'editorial' content
8204                      "<managingEditor>$owner</managingEditor>\n";
8205                if (defined $logo || defined $favicon) {
8206                        # prefer the logo to the favicon, since RSS
8207                        # doesn't allow both
8208                        my $img = esc_url($logo || $favicon);
8209                        print "<image>\n" .
8210                              "<url>$img</url>\n" .
8211                              "<title>$title</title>\n" .
8212                              "<link>$alt_url</link>\n" .
8213                              "</image>\n";
8214                }
8215                if (%latest_date) {
8216                        print "<pubDate>$latest_date{'rfc2822'}</pubDate>\n";
8217                        print "<lastBuildDate>$latest_date{'rfc2822'}</lastBuildDate>\n";
8218                }
8219                print "<generator>gitweb v.$version/$git_version</generator>\n";
8220        } elsif ($format eq 'atom') {
8221                print <<XML;
8222<feed xmlns="http://www.w3.org/2005/Atom">
8223XML
8224                print "<title>$title</title>\n" .
8225                      "<subtitle>$descr</subtitle>\n" .
8226                      '<link rel="alternate" type="text/html" href="' .
8227                      $alt_url . '" />' . "\n" .
8228                      '<link rel="self" type="' . $content_type . '" href="' .
8229                      $cgi->self_url() . '" />' . "\n" .
8230                      "<id>" . href(-full=>1) . "</id>\n" .
8231                      # use project owner for feed author
8232                      "<author><name>$owner</name></author>\n";
8233                if (defined $favicon) {
8234                        print "<icon>" . esc_url($favicon) . "</icon>\n";
8235                }
8236                if (defined $logo) {
8237                        # not twice as wide as tall: 72 x 27 pixels
8238                        print "<logo>" . esc_url($logo) . "</logo>\n";
8239                }
8240                if (! %latest_date) {
8241                        # dummy date to keep the feed valid until commits trickle in:
8242                        print "<updated>1970-01-01T00:00:00Z</updated>\n";
8243                } else {
8244                        print "<updated>$latest_date{'iso-8601'}</updated>\n";
8245                }
8246                print "<generator version='$version/$git_version'>gitweb</generator>\n";
8247        }
8248
8249        # contents
8250        for (my $i = 0; $i <= $#commitlist; $i++) {
8251                my %co = %{$commitlist[$i]};
8252                my $commit = $co{'id'};
8253                # we read 150, we always show 30 and the ones more recent than 48 hours
8254                if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
8255                        last;
8256                }
8257                my %cd = parse_date($co{'author_epoch'}, $co{'author_tz'});
8258
8259                # get list of changed files
8260                open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
8261                        $co{'parent'} || "--root",
8262                        $co{'id'}, "--", (defined $file_name ? $file_name : ())
8263                        or next;
8264                my @difftree = map { chomp; $_ } <$fd>;
8265                close $fd
8266                        or next;
8267
8268                # print element (entry, item)
8269                my $co_url = href(-full=>1, action=>"commitdiff", hash=>$commit);
8270                if ($format eq 'rss') {
8271                        print "<item>\n" .
8272                              "<title>" . esc_html($co{'title'}) . "</title>\n" .
8273                              "<author>" . esc_html($co{'author'}) . "</author>\n" .
8274                              "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
8275                              "<guid isPermaLink=\"true\">$co_url</guid>\n" .
8276                              "<link>$co_url</link>\n" .
8277                              "<description>" . esc_html($co{'title'}) . "</description>\n" .
8278                              "<content:encoded>" .
8279                              "<![CDATA[\n";
8280                } elsif ($format eq 'atom') {
8281                        print "<entry>\n" .
8282                              "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
8283                              "<updated>$cd{'iso-8601'}</updated>\n" .
8284                              "<author>\n" .
8285                              "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
8286                        if ($co{'author_email'}) {
8287                                print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
8288                        }
8289                        print "</author>\n" .
8290                              # use committer for contributor
8291                              "<contributor>\n" .
8292                              "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
8293                        if ($co{'committer_email'}) {
8294                                print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
8295                        }
8296                        print "</contributor>\n" .
8297                              "<published>$cd{'iso-8601'}</published>\n" .
8298                              "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
8299                              "<id>$co_url</id>\n" .
8300                              "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
8301                              "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
8302                }
8303                my $comment = $co{'comment'};
8304                print "<pre>\n";
8305                foreach my $line (@$comment) {
8306                        $line = esc_html($line);
8307                        print "$line\n";
8308                }
8309                print "</pre><ul>\n";
8310                foreach my $difftree_line (@difftree) {
8311                        my %difftree = parse_difftree_raw_line($difftree_line);
8312                        next if !$difftree{'from_id'};
8313
8314                        my $file = $difftree{'file'} || $difftree{'to_file'};
8315
8316                        print "<li>" .
8317                              "[" .
8318                              $cgi->a({-href => href(-full=>1, action=>"blobdiff",
8319                                                     hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
8320                                                     hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
8321                                                     file_name=>$file, file_parent=>$difftree{'from_file'}),
8322                                      -title => "diff"}, 'D');
8323                        if ($have_blame) {
8324                                print $cgi->a({-href => href(-full=>1, action=>"blame",
8325                                                             file_name=>$file, hash_base=>$commit),
8326                                              -title => "blame"}, 'B');
8327                        }
8328                        # if this is not a feed of a file history
8329                        if (!defined $file_name || $file_name ne $file) {
8330                                print $cgi->a({-href => href(-full=>1, action=>"history",
8331                                                             file_name=>$file, hash=>$commit),
8332                                              -title => "history"}, 'H');
8333                        }
8334                        $file = esc_path($file);
8335                        print "] ".
8336                              "$file</li>\n";
8337                }
8338                if ($format eq 'rss') {
8339                        print "</ul>]]>\n" .
8340                              "</content:encoded>\n" .
8341                              "</item>\n";
8342                } elsif ($format eq 'atom') {
8343                        print "</ul>\n</div>\n" .
8344                              "</content>\n" .
8345                              "</entry>\n";
8346                }
8347        }
8348
8349        # end of feed
8350        if ($format eq 'rss') {
8351                print "</channel>\n</rss>\n";
8352        } elsif ($format eq 'atom') {
8353                print "</feed>\n";
8354        }
8355}
8356
8357sub git_rss {
8358        git_feed('rss');
8359}
8360
8361sub git_atom {
8362        git_feed('atom');
8363}
8364
8365sub git_opml {
8366        my @list = git_get_projects_list($project_filter, $strict_export);
8367        if (!@list) {
8368                die_error(404, "No projects found");
8369        }
8370
8371        print $cgi->header(
8372                -type => 'text/xml',
8373                -charset => 'utf-8',
8374                -content_disposition => 'inline; filename="opml.xml"');
8375
8376        my $title = esc_html($site_name);
8377        my $filter = " within subdirectory ";
8378        if (defined $project_filter) {
8379                $filter .= esc_html($project_filter);
8380        } else {
8381                $filter = "";
8382        }
8383        print <<XML;
8384<?xml version="1.0" encoding="utf-8"?>
8385<opml version="1.0">
8386<head>
8387  <title>$title OPML Export$filter</title>
8388</head>
8389<body>
8390<outline text="git RSS feeds">
8391XML
8392
8393        foreach my $pr (@list) {
8394                my %proj = %$pr;
8395                my $head = git_get_head_hash($proj{'path'});
8396                if (!defined $head) {
8397                        next;
8398                }
8399                $git_dir = "$projectroot/$proj{'path'}";
8400                my %co = parse_commit($head);
8401                if (!%co) {
8402                        next;
8403                }
8404
8405                my $path = esc_html(chop_str($proj{'path'}, 25, 5));
8406                my $rss  = href('project' => $proj{'path'}, 'action' => 'rss', -full => 1);
8407                my $html = href('project' => $proj{'path'}, 'action' => 'summary', -full => 1);
8408                print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
8409        }
8410        print <<XML;
8411</outline>
8412</body>
8413</opml>
8414XML
8415}