gitweb / gitweb.perlon commit bash prompt: faster untracked status indicator with untracked directories (dd160d7)
   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", $hash)." | ".
3938                  quote_command($highlight_bin).
3939                  " --replace-tabs=8 --fragment --syntax $syntax |"
3940                or die_error(500, "Couldn't open file or run syntax highlighter");
3941        return $fd;
3942}
3943
3944## ======================================================================
3945## functions printing HTML: header, footer, error page
3946
3947sub get_page_title {
3948        my $title = to_utf8($site_name);
3949
3950        unless (defined $project) {
3951                if (defined $project_filter) {
3952                        $title .= " - projects in '" . esc_path($project_filter) . "'";
3953                }
3954                return $title;
3955        }
3956        $title .= " - " . to_utf8($project);
3957
3958        return $title unless (defined $action);
3959        $title .= "/$action"; # $action is US-ASCII (7bit ASCII)
3960
3961        return $title unless (defined $file_name);
3962        $title .= " - " . esc_path($file_name);
3963        if ($action eq "tree" && $file_name !~ m|/$|) {
3964                $title .= "/";
3965        }
3966
3967        return $title;
3968}
3969
3970sub get_content_type_html {
3971        # require explicit support from the UA if we are to send the page as
3972        # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
3973        # we have to do this because MSIE sometimes globs '*/*', pretending to
3974        # support xhtml+xml but choking when it gets what it asked for.
3975        if (defined $cgi->http('HTTP_ACCEPT') &&
3976            $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
3977            $cgi->Accept('application/xhtml+xml') != 0) {
3978                return 'application/xhtml+xml';
3979        } else {
3980                return 'text/html';
3981        }
3982}
3983
3984sub print_feed_meta {
3985        if (defined $project) {
3986                my %href_params = get_feed_info();
3987                if (!exists $href_params{'-title'}) {
3988                        $href_params{'-title'} = 'log';
3989                }
3990
3991                foreach my $format (qw(RSS Atom)) {
3992                        my $type = lc($format);
3993                        my %link_attr = (
3994                                '-rel' => 'alternate',
3995                                '-title' => esc_attr("$project - $href_params{'-title'} - $format feed"),
3996                                '-type' => "application/$type+xml"
3997                        );
3998
3999                        $href_params{'extra_options'} = undef;
4000                        $href_params{'action'} = $type;
4001                        $link_attr{'-href'} = href(%href_params);
4002                        print "<link ".
4003                              "rel=\"$link_attr{'-rel'}\" ".
4004                              "title=\"$link_attr{'-title'}\" ".
4005                              "href=\"$link_attr{'-href'}\" ".
4006                              "type=\"$link_attr{'-type'}\" ".
4007                              "/>\n";
4008
4009                        $href_params{'extra_options'} = '--no-merges';
4010                        $link_attr{'-href'} = href(%href_params);
4011                        $link_attr{'-title'} .= ' (no merges)';
4012                        print "<link ".
4013                              "rel=\"$link_attr{'-rel'}\" ".
4014                              "title=\"$link_attr{'-title'}\" ".
4015                              "href=\"$link_attr{'-href'}\" ".
4016                              "type=\"$link_attr{'-type'}\" ".
4017                              "/>\n";
4018                }
4019
4020        } else {
4021                printf('<link rel="alternate" title="%s projects list" '.
4022                       'href="%s" type="text/plain; charset=utf-8" />'."\n",
4023                       esc_attr($site_name), href(project=>undef, action=>"project_index"));
4024                printf('<link rel="alternate" title="%s projects feeds" '.
4025                       'href="%s" type="text/x-opml" />'."\n",
4026                       esc_attr($site_name), href(project=>undef, action=>"opml"));
4027        }
4028}
4029
4030sub print_header_links {
4031        my $status = shift;
4032
4033        # print out each stylesheet that exist, providing backwards capability
4034        # for those people who defined $stylesheet in a config file
4035        if (defined $stylesheet) {
4036                print '<link rel="stylesheet" type="text/css" href="'.esc_url($stylesheet).'"/>'."\n";
4037        } else {
4038                foreach my $stylesheet (@stylesheets) {
4039                        next unless $stylesheet;
4040                        print '<link rel="stylesheet" type="text/css" href="'.esc_url($stylesheet).'"/>'."\n";
4041                }
4042        }
4043        print_feed_meta()
4044                if ($status eq '200 OK');
4045        if (defined $favicon) {
4046                print qq(<link rel="shortcut icon" href=").esc_url($favicon).qq(" type="image/png" />\n);
4047        }
4048}
4049
4050sub print_nav_breadcrumbs_path {
4051        my $dirprefix = undef;
4052        while (my $part = shift) {
4053                $dirprefix .= "/" if defined $dirprefix;
4054                $dirprefix .= $part;
4055                print $cgi->a({-href => href(project => undef,
4056                                             project_filter => $dirprefix,
4057                                             action => "project_list")},
4058                              esc_html($part)) . " / ";
4059        }
4060}
4061
4062sub print_nav_breadcrumbs {
4063        my %opts = @_;
4064
4065        for my $crumb (@extra_breadcrumbs, [ $home_link_str => $home_link ]) {
4066                print $cgi->a({-href => esc_url($crumb->[1])}, $crumb->[0]) . " / ";
4067        }
4068        if (defined $project) {
4069                my @dirname = split '/', $project;
4070                my $projectbasename = pop @dirname;
4071                print_nav_breadcrumbs_path(@dirname);
4072                print $cgi->a({-href => href(action=>"summary")}, esc_html($projectbasename));
4073                if (defined $action) {
4074                        my $action_print = $action ;
4075                        if (defined $opts{-action_extra}) {
4076                                $action_print = $cgi->a({-href => href(action=>$action)},
4077                                        $action);
4078                        }
4079                        print " / $action_print";
4080                }
4081                if (defined $opts{-action_extra}) {
4082                        print " / $opts{-action_extra}";
4083                }
4084                print "\n";
4085        } elsif (defined $project_filter) {
4086                print_nav_breadcrumbs_path(split '/', $project_filter);
4087        }
4088}
4089
4090sub print_search_form {
4091        if (!defined $searchtext) {
4092                $searchtext = "";
4093        }
4094        my $search_hash;
4095        if (defined $hash_base) {
4096                $search_hash = $hash_base;
4097        } elsif (defined $hash) {
4098                $search_hash = $hash;
4099        } else {
4100                $search_hash = "HEAD";
4101        }
4102        my $action = $my_uri;
4103        my $use_pathinfo = gitweb_check_feature('pathinfo');
4104        if ($use_pathinfo) {
4105                $action .= "/".esc_url($project);
4106        }
4107        print $cgi->start_form(-method => "get", -action => $action) .
4108              "<div class=\"search\">\n" .
4109              (!$use_pathinfo &&
4110              $cgi->input({-name=>"p", -value=>$project, -type=>"hidden"}) . "\n") .
4111              $cgi->input({-name=>"a", -value=>"search", -type=>"hidden"}) . "\n" .
4112              $cgi->input({-name=>"h", -value=>$search_hash, -type=>"hidden"}) . "\n" .
4113              $cgi->popup_menu(-name => 'st', -default => 'commit',
4114                               -values => ['commit', 'grep', 'author', 'committer', 'pickaxe']) .
4115              " " . $cgi->a({-href => href(action=>"search_help"),
4116                             -title => "search help" }, "?") . " search:\n",
4117              $cgi->textfield(-name => "s", -value => $searchtext, -override => 1) . "\n" .
4118              "<span title=\"Extended regular expression\">" .
4119              $cgi->checkbox(-name => 'sr', -value => 1, -label => 're',
4120                             -checked => $search_use_regexp) .
4121              "</span>" .
4122              "</div>" .
4123              $cgi->end_form() . "\n";
4124}
4125
4126sub git_header_html {
4127        my $status = shift || "200 OK";
4128        my $expires = shift;
4129        my %opts = @_;
4130
4131        my $title = get_page_title();
4132        my $content_type = get_content_type_html();
4133        print $cgi->header(-type=>$content_type, -charset => 'utf-8',
4134                           -status=> $status, -expires => $expires)
4135                unless ($opts{'-no_http_header'});
4136        my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
4137        print <<EOF;
4138<?xml version="1.0" encoding="utf-8"?>
4139<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
4140<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
4141<!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
4142<!-- git core binaries version $git_version -->
4143<head>
4144<meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
4145<meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
4146<meta name="robots" content="index, nofollow"/>
4147<title>$title</title>
4148EOF
4149        # the stylesheet, favicon etc urls won't work correctly with path_info
4150        # unless we set the appropriate base URL
4151        if ($ENV{'PATH_INFO'}) {
4152                print "<base href=\"".esc_url($base_url)."\" />\n";
4153        }
4154        print_header_links($status);
4155
4156        if (defined $site_html_head_string) {
4157                print to_utf8($site_html_head_string);
4158        }
4159
4160        print "</head>\n" .
4161              "<body>\n";
4162
4163        if (defined $site_header && -f $site_header) {
4164                insert_file($site_header);
4165        }
4166
4167        print "<div class=\"page_header\">\n";
4168        if (defined $logo) {
4169                print $cgi->a({-href => esc_url($logo_url),
4170                               -title => $logo_label},
4171                              $cgi->img({-src => esc_url($logo),
4172                                         -width => 72, -height => 27,
4173                                         -alt => "git",
4174                                         -class => "logo"}));
4175        }
4176        print_nav_breadcrumbs(%opts);
4177        print "</div>\n";
4178
4179        my $have_search = gitweb_check_feature('search');
4180        if (defined $project && $have_search) {
4181                print_search_form();
4182        }
4183}
4184
4185sub git_footer_html {
4186        my $feed_class = 'rss_logo';
4187
4188        print "<div class=\"page_footer\">\n";
4189        if (defined $project) {
4190                my $descr = git_get_project_description($project);
4191                if (defined $descr) {
4192                        print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
4193                }
4194
4195                my %href_params = get_feed_info();
4196                if (!%href_params) {
4197                        $feed_class .= ' generic';
4198                }
4199                $href_params{'-title'} ||= 'log';
4200
4201                foreach my $format (qw(RSS Atom)) {
4202                        $href_params{'action'} = lc($format);
4203                        print $cgi->a({-href => href(%href_params),
4204                                      -title => "$href_params{'-title'} $format feed",
4205                                      -class => $feed_class}, $format)."\n";
4206                }
4207
4208        } else {
4209                print $cgi->a({-href => href(project=>undef, action=>"opml",
4210                                             project_filter => $project_filter),
4211                              -class => $feed_class}, "OPML") . " ";
4212                print $cgi->a({-href => href(project=>undef, action=>"project_index",
4213                                             project_filter => $project_filter),
4214                              -class => $feed_class}, "TXT") . "\n";
4215        }
4216        print "</div>\n"; # class="page_footer"
4217
4218        if (defined $t0 && gitweb_check_feature('timed')) {
4219                print "<div id=\"generating_info\">\n";
4220                print 'This page took '.
4221                      '<span id="generating_time" class="time_span">'.
4222                      tv_interval($t0, [ gettimeofday() ]).
4223                      ' seconds </span>'.
4224                      ' and '.
4225                      '<span id="generating_cmd">'.
4226                      $number_of_git_cmds.
4227                      '</span> git commands '.
4228                      " to generate.\n";
4229                print "</div>\n"; # class="page_footer"
4230        }
4231
4232        if (defined $site_footer && -f $site_footer) {
4233                insert_file($site_footer);
4234        }
4235
4236        print qq!<script type="text/javascript" src="!.esc_url($javascript).qq!"></script>\n!;
4237        if (defined $action &&
4238            $action eq 'blame_incremental') {
4239                print qq!<script type="text/javascript">\n!.
4240                      qq!startBlame("!. href(action=>"blame_data", -replay=>1) .qq!",\n!.
4241                      qq!           "!. href() .qq!");\n!.
4242                      qq!</script>\n!;
4243        } else {
4244                my ($jstimezone, $tz_cookie, $datetime_class) =
4245                        gitweb_get_feature('javascript-timezone');
4246
4247                print qq!<script type="text/javascript">\n!.
4248                      qq!window.onload = function () {\n!;
4249                if (gitweb_check_feature('javascript-actions')) {
4250                        print qq!       fixLinks();\n!;
4251                }
4252                if ($jstimezone && $tz_cookie && $datetime_class) {
4253                        print qq!       var tz_cookie = { name: '$tz_cookie', expires: 14, path: '/' };\n!. # in days
4254                              qq!       onloadTZSetup('$jstimezone', tz_cookie, '$datetime_class');\n!;
4255                }
4256                print qq!};\n!.
4257                      qq!</script>\n!;
4258        }
4259
4260        print "</body>\n" .
4261              "</html>";
4262}
4263
4264# die_error(<http_status_code>, <error_message>[, <detailed_html_description>])
4265# Example: die_error(404, 'Hash not found')
4266# By convention, use the following status codes (as defined in RFC 2616):
4267# 400: Invalid or missing CGI parameters, or
4268#      requested object exists but has wrong type.
4269# 403: Requested feature (like "pickaxe" or "snapshot") not enabled on
4270#      this server or project.
4271# 404: Requested object/revision/project doesn't exist.
4272# 500: The server isn't configured properly, or
4273#      an internal error occurred (e.g. failed assertions caused by bugs), or
4274#      an unknown error occurred (e.g. the git binary died unexpectedly).
4275# 503: The server is currently unavailable (because it is overloaded,
4276#      or down for maintenance).  Generally, this is a temporary state.
4277sub die_error {
4278        my $status = shift || 500;
4279        my $error = esc_html(shift) || "Internal Server Error";
4280        my $extra = shift;
4281        my %opts = @_;
4282
4283        my %http_responses = (
4284                400 => '400 Bad Request',
4285                403 => '403 Forbidden',
4286                404 => '404 Not Found',
4287                500 => '500 Internal Server Error',
4288                503 => '503 Service Unavailable',
4289        );
4290        git_header_html($http_responses{$status}, undef, %opts);
4291        print <<EOF;
4292<div class="page_body">
4293<br /><br />
4294$status - $error
4295<br />
4296EOF
4297        if (defined $extra) {
4298                print "<hr />\n" .
4299                      "$extra\n";
4300        }
4301        print "</div>\n";
4302
4303        git_footer_html();
4304        goto DONE_GITWEB
4305                unless ($opts{'-error_handler'});
4306}
4307
4308## ----------------------------------------------------------------------
4309## functions printing or outputting HTML: navigation
4310
4311sub git_print_page_nav {
4312        my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
4313        $extra = '' if !defined $extra; # pager or formats
4314
4315        my @navs = qw(summary shortlog log commit commitdiff tree);
4316        if ($suppress) {
4317                @navs = grep { $_ ne $suppress } @navs;
4318        }
4319
4320        my %arg = map { $_ => {action=>$_} } @navs;
4321        if (defined $head) {
4322                for (qw(commit commitdiff)) {
4323                        $arg{$_}{'hash'} = $head;
4324                }
4325                if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
4326                        for (qw(shortlog log)) {
4327                                $arg{$_}{'hash'} = $head;
4328                        }
4329                }
4330        }
4331
4332        $arg{'tree'}{'hash'} = $treehead if defined $treehead;
4333        $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
4334
4335        my @actions = gitweb_get_feature('actions');
4336        my %repl = (
4337                '%' => '%',
4338                'n' => $project,         # project name
4339                'f' => $git_dir,         # project path within filesystem
4340                'h' => $treehead || '',  # current hash ('h' parameter)
4341                'b' => $treebase || '',  # hash base ('hb' parameter)
4342        );
4343        while (@actions) {
4344                my ($label, $link, $pos) = splice(@actions,0,3);
4345                # insert
4346                @navs = map { $_ eq $pos ? ($_, $label) : $_ } @navs;
4347                # munch munch
4348                $link =~ s/%([%nfhb])/$repl{$1}/g;
4349                $arg{$label}{'_href'} = $link;
4350        }
4351
4352        print "<div class=\"page_nav\">\n" .
4353                (join " | ",
4354                 map { $_ eq $current ?
4355                       $_ : $cgi->a({-href => ($arg{$_}{_href} ? $arg{$_}{_href} : href(%{$arg{$_}}))}, "$_")
4356                 } @navs);
4357        print "<br/>\n$extra<br/>\n" .
4358              "</div>\n";
4359}
4360
4361# returns a submenu for the nagivation of the refs views (tags, heads,
4362# remotes) with the current view disabled and the remotes view only
4363# available if the feature is enabled
4364sub format_ref_views {
4365        my ($current) = @_;
4366        my @ref_views = qw{tags heads};
4367        push @ref_views, 'remotes' if gitweb_check_feature('remote_heads');
4368        return join " | ", map {
4369                $_ eq $current ? $_ :
4370                $cgi->a({-href => href(action=>$_)}, $_)
4371        } @ref_views
4372}
4373
4374sub format_paging_nav {
4375        my ($action, $page, $has_next_link) = @_;
4376        my $paging_nav;
4377
4378
4379        if ($page > 0) {
4380                $paging_nav .=
4381                        $cgi->a({-href => href(-replay=>1, page=>undef)}, "first") .
4382                        " &sdot; " .
4383                        $cgi->a({-href => href(-replay=>1, page=>$page-1),
4384                                 -accesskey => "p", -title => "Alt-p"}, "prev");
4385        } else {
4386                $paging_nav .= "first &sdot; prev";
4387        }
4388
4389        if ($has_next_link) {
4390                $paging_nav .= " &sdot; " .
4391                        $cgi->a({-href => href(-replay=>1, page=>$page+1),
4392                                 -accesskey => "n", -title => "Alt-n"}, "next");
4393        } else {
4394                $paging_nav .= " &sdot; next";
4395        }
4396
4397        return $paging_nav;
4398}
4399
4400## ......................................................................
4401## functions printing or outputting HTML: div
4402
4403sub git_print_header_div {
4404        my ($action, $title, $hash, $hash_base) = @_;
4405        my %args = ();
4406
4407        $args{'action'} = $action;
4408        $args{'hash'} = $hash if $hash;
4409        $args{'hash_base'} = $hash_base if $hash_base;
4410
4411        print "<div class=\"header\">\n" .
4412              $cgi->a({-href => href(%args), -class => "title"},
4413              $title ? $title : $action) .
4414              "\n</div>\n";
4415}
4416
4417sub format_repo_url {
4418        my ($name, $url) = @_;
4419        return "<tr class=\"metadata_url\"><td>$name</td><td>$url</td></tr>\n";
4420}
4421
4422# Group output by placing it in a DIV element and adding a header.
4423# Options for start_div() can be provided by passing a hash reference as the
4424# first parameter to the function.
4425# Options to git_print_header_div() can be provided by passing an array
4426# reference. This must follow the options to start_div if they are present.
4427# The content can be a scalar, which is output as-is, a scalar reference, which
4428# is output after html escaping, an IO handle passed either as *handle or
4429# *handle{IO}, or a function reference. In the latter case all following
4430# parameters will be taken as argument to the content function call.
4431sub git_print_section {
4432        my ($div_args, $header_args, $content);
4433        my $arg = shift;
4434        if (ref($arg) eq 'HASH') {
4435                $div_args = $arg;
4436                $arg = shift;
4437        }
4438        if (ref($arg) eq 'ARRAY') {
4439                $header_args = $arg;
4440                $arg = shift;
4441        }
4442        $content = $arg;
4443
4444        print $cgi->start_div($div_args);
4445        git_print_header_div(@$header_args);
4446
4447        if (ref($content) eq 'CODE') {
4448                $content->(@_);
4449        } elsif (ref($content) eq 'SCALAR') {
4450                print esc_html($$content);
4451        } elsif (ref($content) eq 'GLOB' or ref($content) eq 'IO::Handle') {
4452                print <$content>;
4453        } elsif (!ref($content) && defined($content)) {
4454                print $content;
4455        }
4456
4457        print $cgi->end_div;
4458}
4459
4460sub format_timestamp_html {
4461        my $date = shift;
4462        my $strtime = $date->{'rfc2822'};
4463
4464        my (undef, undef, $datetime_class) =
4465                gitweb_get_feature('javascript-timezone');
4466        if ($datetime_class) {
4467                $strtime = qq!<span class="$datetime_class">$strtime</span>!;
4468        }
4469
4470        my $localtime_format = '(%02d:%02d %s)';
4471        if ($date->{'hour_local'} < 6) {
4472                $localtime_format = '(<span class="atnight">%02d:%02d</span> %s)';
4473        }
4474        $strtime .= ' ' .
4475                    sprintf($localtime_format,
4476                            $date->{'hour_local'}, $date->{'minute_local'}, $date->{'tz_local'});
4477
4478        return $strtime;
4479}
4480
4481# Outputs the author name and date in long form
4482sub git_print_authorship {
4483        my $co = shift;
4484        my %opts = @_;
4485        my $tag = $opts{-tag} || 'div';
4486        my $author = $co->{'author_name'};
4487
4488        my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
4489        print "<$tag class=\"author_date\">" .
4490              format_search_author($author, "author", esc_html($author)) .
4491              " [".format_timestamp_html(\%ad)."]".
4492              git_get_avatar($co->{'author_email'}, -pad_before => 1) .
4493              "</$tag>\n";
4494}
4495
4496# Outputs table rows containing the full author or committer information,
4497# in the format expected for 'commit' view (& similar).
4498# Parameters are a commit hash reference, followed by the list of people
4499# to output information for. If the list is empty it defaults to both
4500# author and committer.
4501sub git_print_authorship_rows {
4502        my $co = shift;
4503        # too bad we can't use @people = @_ || ('author', 'committer')
4504        my @people = @_;
4505        @people = ('author', 'committer') unless @people;
4506        foreach my $who (@people) {
4507                my %wd = parse_date($co->{"${who}_epoch"}, $co->{"${who}_tz"});
4508                print "<tr><td>$who</td><td>" .
4509                      format_search_author($co->{"${who}_name"}, $who,
4510                                           esc_html($co->{"${who}_name"})) . " " .
4511                      format_search_author($co->{"${who}_email"}, $who,
4512                                           esc_html("<" . $co->{"${who}_email"} . ">")) .
4513                      "</td><td rowspan=\"2\">" .
4514                      git_get_avatar($co->{"${who}_email"}, -size => 'double') .
4515                      "</td></tr>\n" .
4516                      "<tr>" .
4517                      "<td></td><td>" .
4518                      format_timestamp_html(\%wd) .
4519                      "</td>" .
4520                      "</tr>\n";
4521        }
4522}
4523
4524sub git_print_page_path {
4525        my $name = shift;
4526        my $type = shift;
4527        my $hb = shift;
4528
4529
4530        print "<div class=\"page_path\">";
4531        print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
4532                      -title => 'tree root'}, to_utf8("[$project]"));
4533        print " / ";
4534        if (defined $name) {
4535                my @dirname = split '/', $name;
4536                my $basename = pop @dirname;
4537                my $fullname = '';
4538
4539                foreach my $dir (@dirname) {
4540                        $fullname .= ($fullname ? '/' : '') . $dir;
4541                        print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
4542                                                     hash_base=>$hb),
4543                                      -title => $fullname}, esc_path($dir));
4544                        print " / ";
4545                }
4546                if (defined $type && $type eq 'blob') {
4547                        print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
4548                                                     hash_base=>$hb),
4549                                      -title => $name}, esc_path($basename));
4550                } elsif (defined $type && $type eq 'tree') {
4551                        print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
4552                                                     hash_base=>$hb),
4553                                      -title => $name}, esc_path($basename));
4554                        print " / ";
4555                } else {
4556                        print esc_path($basename);
4557                }
4558        }
4559        print "<br/></div>\n";
4560}
4561
4562sub git_print_log {
4563        my $log = shift;
4564        my %opts = @_;
4565
4566        if ($opts{'-remove_title'}) {
4567                # remove title, i.e. first line of log
4568                shift @$log;
4569        }
4570        # remove leading empty lines
4571        while (defined $log->[0] && $log->[0] eq "") {
4572                shift @$log;
4573        }
4574
4575        # print log
4576        my $skip_blank_line = 0;
4577        foreach my $line (@$log) {
4578                if ($line =~ m/^\s*([A-Z][-A-Za-z]*-[Bb]y|C[Cc]): /) {
4579                        if (! $opts{'-remove_signoff'}) {
4580                                print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
4581                                $skip_blank_line = 1;
4582                        }
4583                        next;
4584                }
4585
4586                if ($line =~ m,\s*([a-z]*link): (https?://\S+),i) {
4587                        if (! $opts{'-remove_signoff'}) {
4588                                print "<span class=\"signoff\">" . esc_html($1) . ": " .
4589                                        "<a href=\"" . esc_html($2) . "\">" . esc_html($2) . "</a>" .
4590                                        "</span><br/>\n";
4591                                $skip_blank_line = 1;
4592                        }
4593                        next;
4594                }
4595
4596                # print only one empty line
4597                # do not print empty line after signoff
4598                if ($line eq "") {
4599                        next if ($skip_blank_line);
4600                        $skip_blank_line = 1;
4601                } else {
4602                        $skip_blank_line = 0;
4603                }
4604
4605                print format_log_line_html($line) . "<br/>\n";
4606        }
4607
4608        if ($opts{'-final_empty_line'}) {
4609                # end with single empty line
4610                print "<br/>\n" unless $skip_blank_line;
4611        }
4612}
4613
4614# return link target (what link points to)
4615sub git_get_link_target {
4616        my $hash = shift;
4617        my $link_target;
4618
4619        # read link
4620        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
4621                or return;
4622        {
4623                local $/ = undef;
4624                $link_target = <$fd>;
4625        }
4626        close $fd
4627                or return;
4628
4629        return $link_target;
4630}
4631
4632# given link target, and the directory (basedir) the link is in,
4633# return target of link relative to top directory (top tree);
4634# return undef if it is not possible (including absolute links).
4635sub normalize_link_target {
4636        my ($link_target, $basedir) = @_;
4637
4638        # absolute symlinks (beginning with '/') cannot be normalized
4639        return if (substr($link_target, 0, 1) eq '/');
4640
4641        # normalize link target to path from top (root) tree (dir)
4642        my $path;
4643        if ($basedir) {
4644                $path = $basedir . '/' . $link_target;
4645        } else {
4646                # we are in top (root) tree (dir)
4647                $path = $link_target;
4648        }
4649
4650        # remove //, /./, and /../
4651        my @path_parts;
4652        foreach my $part (split('/', $path)) {
4653                # discard '.' and ''
4654                next if (!$part || $part eq '.');
4655                # handle '..'
4656                if ($part eq '..') {
4657                        if (@path_parts) {
4658                                pop @path_parts;
4659                        } else {
4660                                # link leads outside repository (outside top dir)
4661                                return;
4662                        }
4663                } else {
4664                        push @path_parts, $part;
4665                }
4666        }
4667        $path = join('/', @path_parts);
4668
4669        return $path;
4670}
4671
4672# print tree entry (row of git_tree), but without encompassing <tr> element
4673sub git_print_tree_entry {
4674        my ($t, $basedir, $hash_base, $have_blame) = @_;
4675
4676        my %base_key = ();
4677        $base_key{'hash_base'} = $hash_base if defined $hash_base;
4678
4679        # The format of a table row is: mode list link.  Where mode is
4680        # the mode of the entry, list is the name of the entry, an href,
4681        # and link is the action links of the entry.
4682
4683        print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
4684        if (exists $t->{'size'}) {
4685                print "<td class=\"size\">$t->{'size'}</td>\n";
4686        }
4687        if ($t->{'type'} eq "blob") {
4688                print "<td class=\"list\">" .
4689                        $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
4690                                               file_name=>"$basedir$t->{'name'}", %base_key),
4691                                -class => "list"}, esc_path($t->{'name'}));
4692                if (S_ISLNK(oct $t->{'mode'})) {
4693                        my $link_target = git_get_link_target($t->{'hash'});
4694                        if ($link_target) {
4695                                my $norm_target = normalize_link_target($link_target, $basedir);
4696                                if (defined $norm_target) {
4697                                        print " -> " .
4698                                              $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
4699                                                                     file_name=>$norm_target),
4700                                                       -title => $norm_target}, esc_path($link_target));
4701                                } else {
4702                                        print " -> " . esc_path($link_target);
4703                                }
4704                        }
4705                }
4706                print "</td>\n";
4707                print "<td class=\"link\">";
4708                print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
4709                                             file_name=>"$basedir$t->{'name'}", %base_key)},
4710                              "blob");
4711                if ($have_blame) {
4712                        print " | " .
4713                              $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
4714                                                     file_name=>"$basedir$t->{'name'}", %base_key)},
4715                                      "blame");
4716                }
4717                if (defined $hash_base) {
4718                        print " | " .
4719                              $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
4720                                                     hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
4721                                      "history");
4722                }
4723                print " | " .
4724                        $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
4725                                               file_name=>"$basedir$t->{'name'}")},
4726                                "raw");
4727                print "</td>\n";
4728
4729        } elsif ($t->{'type'} eq "tree") {
4730                print "<td class=\"list\">";
4731                print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
4732                                             file_name=>"$basedir$t->{'name'}",
4733                                             %base_key)},
4734                              esc_path($t->{'name'}));
4735                print "</td>\n";
4736                print "<td class=\"link\">";
4737                print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
4738                                             file_name=>"$basedir$t->{'name'}",
4739                                             %base_key)},
4740                              "tree");
4741                if (defined $hash_base) {
4742                        print " | " .
4743                              $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
4744                                                     file_name=>"$basedir$t->{'name'}")},
4745                                      "history");
4746                }
4747                print "</td>\n";
4748        } else {
4749                # unknown object: we can only present history for it
4750                # (this includes 'commit' object, i.e. submodule support)
4751                print "<td class=\"list\">" .
4752                      esc_path($t->{'name'}) .
4753                      "</td>\n";
4754                print "<td class=\"link\">";
4755                if (defined $hash_base) {
4756                        print $cgi->a({-href => href(action=>"history",
4757                                                     hash_base=>$hash_base,
4758                                                     file_name=>"$basedir$t->{'name'}")},
4759                                      "history");
4760                }
4761                print "</td>\n";
4762        }
4763}
4764
4765## ......................................................................
4766## functions printing large fragments of HTML
4767
4768# get pre-image filenames for merge (combined) diff
4769sub fill_from_file_info {
4770        my ($diff, @parents) = @_;
4771
4772        $diff->{'from_file'} = [ ];
4773        $diff->{'from_file'}[$diff->{'nparents'} - 1] = undef;
4774        for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
4775                if ($diff->{'status'}[$i] eq 'R' ||
4776                    $diff->{'status'}[$i] eq 'C') {
4777                        $diff->{'from_file'}[$i] =
4778                                git_get_path_by_hash($parents[$i], $diff->{'from_id'}[$i]);
4779                }
4780        }
4781
4782        return $diff;
4783}
4784
4785# is current raw difftree line of file deletion
4786sub is_deleted {
4787        my $diffinfo = shift;
4788
4789        return $diffinfo->{'to_id'} eq ('0' x 40);
4790}
4791
4792# does patch correspond to [previous] difftree raw line
4793# $diffinfo  - hashref of parsed raw diff format
4794# $patchinfo - hashref of parsed patch diff format
4795#              (the same keys as in $diffinfo)
4796sub is_patch_split {
4797        my ($diffinfo, $patchinfo) = @_;
4798
4799        return defined $diffinfo && defined $patchinfo
4800                && $diffinfo->{'to_file'} eq $patchinfo->{'to_file'};
4801}
4802
4803
4804sub git_difftree_body {
4805        my ($difftree, $hash, @parents) = @_;
4806        my ($parent) = $parents[0];
4807        my $have_blame = gitweb_check_feature('blame');
4808        print "<div class=\"list_head\">\n";
4809        if ($#{$difftree} > 10) {
4810                print(($#{$difftree} + 1) . " files changed:\n");
4811        }
4812        print "</div>\n";
4813
4814        print "<table class=\"" .
4815              (@parents > 1 ? "combined " : "") .
4816              "diff_tree\">\n";
4817
4818        # header only for combined diff in 'commitdiff' view
4819        my $has_header = @$difftree && @parents > 1 && $action eq 'commitdiff';
4820        if ($has_header) {
4821                # table header
4822                print "<thead><tr>\n" .
4823                       "<th></th><th></th>\n"; # filename, patchN link
4824                for (my $i = 0; $i < @parents; $i++) {
4825                        my $par = $parents[$i];
4826                        print "<th>" .
4827                              $cgi->a({-href => href(action=>"commitdiff",
4828                                                     hash=>$hash, hash_parent=>$par),
4829                                       -title => 'commitdiff to parent number ' .
4830                                                  ($i+1) . ': ' . substr($par,0,7)},
4831                                      $i+1) .
4832                              "&nbsp;</th>\n";
4833                }
4834                print "</tr></thead>\n<tbody>\n";
4835        }
4836
4837        my $alternate = 1;
4838        my $patchno = 0;
4839        foreach my $line (@{$difftree}) {
4840                my $diff = parsed_difftree_line($line);
4841
4842                if ($alternate) {
4843                        print "<tr class=\"dark\">\n";
4844                } else {
4845                        print "<tr class=\"light\">\n";
4846                }
4847                $alternate ^= 1;
4848
4849                if (exists $diff->{'nparents'}) { # combined diff
4850
4851                        fill_from_file_info($diff, @parents)
4852                                unless exists $diff->{'from_file'};
4853
4854                        if (!is_deleted($diff)) {
4855                                # file exists in the result (child) commit
4856                                print "<td>" .
4857                                      $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
4858                                                             file_name=>$diff->{'to_file'},
4859                                                             hash_base=>$hash),
4860                                              -class => "list"}, esc_path($diff->{'to_file'})) .
4861                                      "</td>\n";
4862                        } else {
4863                                print "<td>" .
4864                                      esc_path($diff->{'to_file'}) .
4865                                      "</td>\n";
4866                        }
4867
4868                        if ($action eq 'commitdiff') {
4869                                # link to patch
4870                                $patchno++;
4871                                print "<td class=\"link\">" .
4872                                      $cgi->a({-href => href(-anchor=>"patch$patchno")},
4873                                              "patch") .
4874                                      " | " .
4875                                      "</td>\n";
4876                        }
4877
4878                        my $has_history = 0;
4879                        my $not_deleted = 0;
4880                        for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
4881                                my $hash_parent = $parents[$i];
4882                                my $from_hash = $diff->{'from_id'}[$i];
4883                                my $from_path = $diff->{'from_file'}[$i];
4884                                my $status = $diff->{'status'}[$i];
4885
4886                                $has_history ||= ($status ne 'A');
4887                                $not_deleted ||= ($status ne 'D');
4888
4889                                if ($status eq 'A') {
4890                                        print "<td  class=\"link\" align=\"right\"> | </td>\n";
4891                                } elsif ($status eq 'D') {
4892                                        print "<td class=\"link\">" .
4893                                              $cgi->a({-href => href(action=>"blob",
4894                                                                     hash_base=>$hash,
4895                                                                     hash=>$from_hash,
4896                                                                     file_name=>$from_path)},
4897                                                      "blob" . ($i+1)) .
4898                                              " | </td>\n";
4899                                } else {
4900                                        if ($diff->{'to_id'} eq $from_hash) {
4901                                                print "<td class=\"link nochange\">";
4902                                        } else {
4903                                                print "<td class=\"link\">";
4904                                        }
4905                                        print $cgi->a({-href => href(action=>"blobdiff",
4906                                                                     hash=>$diff->{'to_id'},
4907                                                                     hash_parent=>$from_hash,
4908                                                                     hash_base=>$hash,
4909                                                                     hash_parent_base=>$hash_parent,
4910                                                                     file_name=>$diff->{'to_file'},
4911                                                                     file_parent=>$from_path)},
4912                                                      "diff" . ($i+1)) .
4913                                              " | </td>\n";
4914                                }
4915                        }
4916
4917                        print "<td class=\"link\">";
4918                        if ($not_deleted) {
4919                                print $cgi->a({-href => href(action=>"blob",
4920                                                             hash=>$diff->{'to_id'},
4921                                                             file_name=>$diff->{'to_file'},
4922                                                             hash_base=>$hash)},
4923                                              "blob");
4924                                print " | " if ($has_history);
4925                        }
4926                        if ($has_history) {
4927                                print $cgi->a({-href => href(action=>"history",
4928                                                             file_name=>$diff->{'to_file'},
4929                                                             hash_base=>$hash)},
4930                                              "history");
4931                        }
4932                        print "</td>\n";
4933
4934                        print "</tr>\n";
4935                        next; # instead of 'else' clause, to avoid extra indent
4936                }
4937                # else ordinary diff
4938
4939                my ($to_mode_oct, $to_mode_str, $to_file_type);
4940                my ($from_mode_oct, $from_mode_str, $from_file_type);
4941                if ($diff->{'to_mode'} ne ('0' x 6)) {
4942                        $to_mode_oct = oct $diff->{'to_mode'};
4943                        if (S_ISREG($to_mode_oct)) { # only for regular file
4944                                $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
4945                        }
4946                        $to_file_type = file_type($diff->{'to_mode'});
4947                }
4948                if ($diff->{'from_mode'} ne ('0' x 6)) {
4949                        $from_mode_oct = oct $diff->{'from_mode'};
4950                        if (S_ISREG($from_mode_oct)) { # only for regular file
4951                                $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
4952                        }
4953                        $from_file_type = file_type($diff->{'from_mode'});
4954                }
4955
4956                if ($diff->{'status'} eq "A") { # created
4957                        my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
4958                        $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
4959                        $mode_chng   .= "]</span>";
4960                        print "<td>";
4961                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
4962                                                     hash_base=>$hash, file_name=>$diff->{'file'}),
4963                                      -class => "list"}, esc_path($diff->{'file'}));
4964                        print "</td>\n";
4965                        print "<td>$mode_chng</td>\n";
4966                        print "<td class=\"link\">";
4967                        if ($action eq 'commitdiff') {
4968                                # link to patch
4969                                $patchno++;
4970                                print $cgi->a({-href => href(-anchor=>"patch$patchno")},
4971                                              "patch") .
4972                                      " | ";
4973                        }
4974                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
4975                                                     hash_base=>$hash, file_name=>$diff->{'file'})},
4976                                      "blob");
4977                        print "</td>\n";
4978
4979                } elsif ($diff->{'status'} eq "D") { # deleted
4980                        my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
4981                        print "<td>";
4982                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
4983                                                     hash_base=>$parent, file_name=>$diff->{'file'}),
4984                                       -class => "list"}, esc_path($diff->{'file'}));
4985                        print "</td>\n";
4986                        print "<td>$mode_chng</td>\n";
4987                        print "<td class=\"link\">";
4988                        if ($action eq 'commitdiff') {
4989                                # link to patch
4990                                $patchno++;
4991                                print $cgi->a({-href => href(-anchor=>"patch$patchno")},
4992                                              "patch") .
4993                                      " | ";
4994                        }
4995                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
4996                                                     hash_base=>$parent, file_name=>$diff->{'file'})},
4997                                      "blob") . " | ";
4998                        if ($have_blame) {
4999                                print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
5000                                                             file_name=>$diff->{'file'})},
5001                                              "blame") . " | ";
5002                        }
5003                        print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
5004                                                     file_name=>$diff->{'file'})},
5005                                      "history");
5006                        print "</td>\n";
5007
5008                } elsif ($diff->{'status'} eq "M" || $diff->{'status'} eq "T") { # modified, or type changed
5009                        my $mode_chnge = "";
5010                        if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
5011                                $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
5012                                if ($from_file_type ne $to_file_type) {
5013                                        $mode_chnge .= " from $from_file_type to $to_file_type";
5014                                }
5015                                if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
5016                                        if ($from_mode_str && $to_mode_str) {
5017                                                $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
5018                                        } elsif ($to_mode_str) {
5019                                                $mode_chnge .= " mode: $to_mode_str";
5020                                        }
5021                                }
5022                                $mode_chnge .= "]</span>\n";
5023                        }
5024                        print "<td>";
5025                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
5026                                                     hash_base=>$hash, file_name=>$diff->{'file'}),
5027                                      -class => "list"}, esc_path($diff->{'file'}));
5028                        print "</td>\n";
5029                        print "<td>$mode_chnge</td>\n";
5030                        print "<td class=\"link\">";
5031                        if ($action eq 'commitdiff') {
5032                                # link to patch
5033                                $patchno++;
5034                                print $cgi->a({-href => href(-anchor=>"patch$patchno")},
5035                                              "patch") .
5036                                      " | ";
5037                        } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
5038                                # "commit" view and modified file (not onlu mode changed)
5039                                print $cgi->a({-href => href(action=>"blobdiff",
5040                                                             hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
5041                                                             hash_base=>$hash, hash_parent_base=>$parent,
5042                                                             file_name=>$diff->{'file'})},
5043                                              "diff") .
5044                                      " | ";
5045                        }
5046                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
5047                                                     hash_base=>$hash, file_name=>$diff->{'file'})},
5048                                       "blob") . " | ";
5049                        if ($have_blame) {
5050                                print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
5051                                                             file_name=>$diff->{'file'})},
5052                                              "blame") . " | ";
5053                        }
5054                        print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
5055                                                     file_name=>$diff->{'file'})},
5056                                      "history");
5057                        print "</td>\n";
5058
5059                } elsif ($diff->{'status'} eq "R" || $diff->{'status'} eq "C") { # renamed or copied
5060                        my %status_name = ('R' => 'moved', 'C' => 'copied');
5061                        my $nstatus = $status_name{$diff->{'status'}};
5062                        my $mode_chng = "";
5063                        if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
5064                                # mode also for directories, so we cannot use $to_mode_str
5065                                $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
5066                        }
5067                        print "<td>" .
5068                              $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
5069                                                     hash=>$diff->{'to_id'}, file_name=>$diff->{'to_file'}),
5070                                      -class => "list"}, esc_path($diff->{'to_file'})) . "</td>\n" .
5071                              "<td><span class=\"file_status $nstatus\">[$nstatus from " .
5072                              $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
5073                                                     hash=>$diff->{'from_id'}, file_name=>$diff->{'from_file'}),
5074                                      -class => "list"}, esc_path($diff->{'from_file'})) .
5075                              " with " . (int $diff->{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
5076                              "<td class=\"link\">";
5077                        if ($action eq 'commitdiff') {
5078                                # link to patch
5079                                $patchno++;
5080                                print $cgi->a({-href => href(-anchor=>"patch$patchno")},
5081                                              "patch") .
5082                                      " | ";
5083                        } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
5084                                # "commit" view and modified file (not only pure rename or copy)
5085                                print $cgi->a({-href => href(action=>"blobdiff",
5086                                                             hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
5087                                                             hash_base=>$hash, hash_parent_base=>$parent,
5088                                                             file_name=>$diff->{'to_file'}, file_parent=>$diff->{'from_file'})},
5089                                              "diff") .
5090                                      " | ";
5091                        }
5092                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
5093                                                     hash_base=>$parent, file_name=>$diff->{'to_file'})},
5094                                      "blob") . " | ";
5095                        if ($have_blame) {
5096                                print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
5097                                                             file_name=>$diff->{'to_file'})},
5098                                              "blame") . " | ";
5099                        }
5100                        print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
5101                                                    file_name=>$diff->{'to_file'})},
5102                                      "history");
5103                        print "</td>\n";
5104
5105                } # we should not encounter Unmerged (U) or Unknown (X) status
5106                print "</tr>\n";
5107        }
5108        print "</tbody>" if $has_header;
5109        print "</table>\n";
5110}
5111
5112# Print context lines and then rem/add lines in a side-by-side manner.
5113sub print_sidebyside_diff_lines {
5114        my ($ctx, $rem, $add) = @_;
5115
5116        # print context block before add/rem block
5117        if (@$ctx) {
5118                print join '',
5119                        '<div class="chunk_block ctx">',
5120                                '<div class="old">',
5121                                @$ctx,
5122                                '</div>',
5123                                '<div class="new">',
5124                                @$ctx,
5125                                '</div>',
5126                        '</div>';
5127        }
5128
5129        if (!@$add) {
5130                # pure removal
5131                print join '',
5132                        '<div class="chunk_block rem">',
5133                                '<div class="old">',
5134                                @$rem,
5135                                '</div>',
5136                        '</div>';
5137        } elsif (!@$rem) {
5138                # pure addition
5139                print join '',
5140                        '<div class="chunk_block add">',
5141                                '<div class="new">',
5142                                @$add,
5143                                '</div>',
5144                        '</div>';
5145        } else {
5146                print join '',
5147                        '<div class="chunk_block chg">',
5148                                '<div class="old">',
5149                                @$rem,
5150                                '</div>',
5151                                '<div class="new">',
5152                                @$add,
5153                                '</div>',
5154                        '</div>';
5155        }
5156}
5157
5158# Print context lines and then rem/add lines in inline manner.
5159sub print_inline_diff_lines {
5160        my ($ctx, $rem, $add) = @_;
5161
5162        print @$ctx, @$rem, @$add;
5163}
5164
5165# Format removed and added line, mark changed part and HTML-format them.
5166# Implementation is based on contrib/diff-highlight
5167sub format_rem_add_lines_pair {
5168        my ($rem, $add, $num_parents) = @_;
5169
5170        # We need to untabify lines before split()'ing them;
5171        # otherwise offsets would be invalid.
5172        chomp $rem;
5173        chomp $add;
5174        $rem = untabify($rem);
5175        $add = untabify($add);
5176
5177        my @rem = split(//, $rem);
5178        my @add = split(//, $add);
5179        my ($esc_rem, $esc_add);
5180        # Ignore leading +/- characters for each parent.
5181        my ($prefix_len, $suffix_len) = ($num_parents, 0);
5182        my ($prefix_has_nonspace, $suffix_has_nonspace);
5183
5184        my $shorter = (@rem < @add) ? @rem : @add;
5185        while ($prefix_len < $shorter) {
5186                last if ($rem[$prefix_len] ne $add[$prefix_len]);
5187
5188                $prefix_has_nonspace = 1 if ($rem[$prefix_len] !~ /\s/);
5189                $prefix_len++;
5190        }
5191
5192        while ($prefix_len + $suffix_len < $shorter) {
5193                last if ($rem[-1 - $suffix_len] ne $add[-1 - $suffix_len]);
5194
5195                $suffix_has_nonspace = 1 if ($rem[-1 - $suffix_len] !~ /\s/);
5196                $suffix_len++;
5197        }
5198
5199        # Mark lines that are different from each other, but have some common
5200        # part that isn't whitespace.  If lines are completely different, don't
5201        # mark them because that would make output unreadable, especially if
5202        # diff consists of multiple lines.
5203        if ($prefix_has_nonspace || $suffix_has_nonspace) {
5204                $esc_rem = esc_html_hl_regions($rem, 'marked',
5205                        [$prefix_len, @rem - $suffix_len], -nbsp=>1);
5206                $esc_add = esc_html_hl_regions($add, 'marked',
5207                        [$prefix_len, @add - $suffix_len], -nbsp=>1);
5208        } else {
5209                $esc_rem = esc_html($rem, -nbsp=>1);
5210                $esc_add = esc_html($add, -nbsp=>1);
5211        }
5212
5213        return format_diff_line(\$esc_rem, 'rem'),
5214               format_diff_line(\$esc_add, 'add');
5215}
5216
5217# HTML-format diff context, removed and added lines.
5218sub format_ctx_rem_add_lines {
5219        my ($ctx, $rem, $add, $num_parents) = @_;
5220        my (@new_ctx, @new_rem, @new_add);
5221        my $can_highlight = 0;
5222        my $is_combined = ($num_parents > 1);
5223
5224        # Highlight if every removed line has a corresponding added line.
5225        if (@$add > 0 && @$add == @$rem) {
5226                $can_highlight = 1;
5227
5228                # Highlight lines in combined diff only if the chunk contains
5229                # diff between the same version, e.g.
5230                #
5231                #    - a
5232                #   -  b
5233                #    + c
5234                #   +  d
5235                #
5236                # Otherwise the highlightling would be confusing.
5237                if ($is_combined) {
5238                        for (my $i = 0; $i < @$add; $i++) {
5239                                my $prefix_rem = substr($rem->[$i], 0, $num_parents);
5240                                my $prefix_add = substr($add->[$i], 0, $num_parents);
5241
5242                                $prefix_rem =~ s/-/+/g;
5243
5244                                if ($prefix_rem ne $prefix_add) {
5245                                        $can_highlight = 0;
5246                                        last;
5247                                }
5248                        }
5249                }
5250        }
5251
5252        if ($can_highlight) {
5253                for (my $i = 0; $i < @$add; $i++) {
5254                        my ($line_rem, $line_add) = format_rem_add_lines_pair(
5255                                $rem->[$i], $add->[$i], $num_parents);
5256                        push @new_rem, $line_rem;
5257                        push @new_add, $line_add;
5258                }
5259        } else {
5260                @new_rem = map { format_diff_line($_, 'rem') } @$rem;
5261                @new_add = map { format_diff_line($_, 'add') } @$add;
5262        }
5263
5264        @new_ctx = map { format_diff_line($_, 'ctx') } @$ctx;
5265
5266        return (\@new_ctx, \@new_rem, \@new_add);
5267}
5268
5269# Print context lines and then rem/add lines.
5270sub print_diff_lines {
5271        my ($ctx, $rem, $add, $diff_style, $num_parents) = @_;
5272        my $is_combined = $num_parents > 1;
5273
5274        ($ctx, $rem, $add) = format_ctx_rem_add_lines($ctx, $rem, $add,
5275                $num_parents);
5276
5277        if ($diff_style eq 'sidebyside' && !$is_combined) {
5278                print_sidebyside_diff_lines($ctx, $rem, $add);
5279        } else {
5280                # default 'inline' style and unknown styles
5281                print_inline_diff_lines($ctx, $rem, $add);
5282        }
5283}
5284
5285sub print_diff_chunk {
5286        my ($diff_style, $num_parents, $from, $to, @chunk) = @_;
5287        my (@ctx, @rem, @add);
5288
5289        # The class of the previous line.
5290        my $prev_class = '';
5291
5292        return unless @chunk;
5293
5294        # incomplete last line might be among removed or added lines,
5295        # or both, or among context lines: find which
5296        for (my $i = 1; $i < @chunk; $i++) {
5297                if ($chunk[$i][0] eq 'incomplete') {
5298                        $chunk[$i][0] = $chunk[$i-1][0];
5299                }
5300        }
5301
5302        # guardian
5303        push @chunk, ["", ""];
5304
5305        foreach my $line_info (@chunk) {
5306                my ($class, $line) = @$line_info;
5307
5308                # print chunk headers
5309                if ($class && $class eq 'chunk_header') {
5310                        print format_diff_line($line, $class, $from, $to);
5311                        next;
5312                }
5313
5314                ## print from accumulator when have some add/rem lines or end
5315                # of chunk (flush context lines), or when have add and rem
5316                # lines and new block is reached (otherwise add/rem lines could
5317                # be reordered)
5318                if (!$class || ((@rem || @add) && $class eq 'ctx') ||
5319                    (@rem && @add && $class ne $prev_class)) {
5320                        print_diff_lines(\@ctx, \@rem, \@add,
5321                                         $diff_style, $num_parents);
5322                        @ctx = @rem = @add = ();
5323                }
5324
5325                ## adding lines to accumulator
5326                # guardian value
5327                last unless $line;
5328                # rem, add or change
5329                if ($class eq 'rem') {
5330                        push @rem, $line;
5331                } elsif ($class eq 'add') {
5332                        push @add, $line;
5333                }
5334                # context line
5335                if ($class eq 'ctx') {
5336                        push @ctx, $line;
5337                }
5338
5339                $prev_class = $class;
5340        }
5341}
5342
5343sub git_patchset_body {
5344        my ($fd, $diff_style, $difftree, $hash, @hash_parents) = @_;
5345        my ($hash_parent) = $hash_parents[0];
5346
5347        my $is_combined = (@hash_parents > 1);
5348        my $patch_idx = 0;
5349        my $patch_number = 0;
5350        my $patch_line;
5351        my $diffinfo;
5352        my $to_name;
5353        my (%from, %to);
5354        my @chunk; # for side-by-side diff
5355
5356        print "<div class=\"patchset\">\n";
5357
5358        # skip to first patch
5359        while ($patch_line = <$fd>) {
5360                chomp $patch_line;
5361
5362                last if ($patch_line =~ m/^diff /);
5363        }
5364
5365 PATCH:
5366        while ($patch_line) {
5367
5368                # parse "git diff" header line
5369                if ($patch_line =~ m/^diff --git (\"(?:[^\\\"]*(?:\\.[^\\\"]*)*)\"|[^ "]*) (.*)$/) {
5370                        # $1 is from_name, which we do not use
5371                        $to_name = unquote($2);
5372                        $to_name =~ s!^b/!!;
5373                } elsif ($patch_line =~ m/^diff --(cc|combined) ("?.*"?)$/) {
5374                        # $1 is 'cc' or 'combined', which we do not use
5375                        $to_name = unquote($2);
5376                } else {
5377                        $to_name = undef;
5378                }
5379
5380                # check if current patch belong to current raw line
5381                # and parse raw git-diff line if needed
5382                if (is_patch_split($diffinfo, { 'to_file' => $to_name })) {
5383                        # this is continuation of a split patch
5384                        print "<div class=\"patch cont\">\n";
5385                } else {
5386                        # advance raw git-diff output if needed
5387                        $patch_idx++ if defined $diffinfo;
5388
5389                        # read and prepare patch information
5390                        $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
5391
5392                        # compact combined diff output can have some patches skipped
5393                        # find which patch (using pathname of result) we are at now;
5394                        if ($is_combined) {
5395                                while ($to_name ne $diffinfo->{'to_file'}) {
5396                                        print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
5397                                              format_diff_cc_simplified($diffinfo, @hash_parents) .
5398                                              "</div>\n";  # class="patch"
5399
5400                                        $patch_idx++;
5401                                        $patch_number++;
5402
5403                                        last if $patch_idx > $#$difftree;
5404                                        $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
5405                                }
5406                        }
5407
5408                        # modifies %from, %to hashes
5409                        parse_from_to_diffinfo($diffinfo, \%from, \%to, @hash_parents);
5410
5411                        # this is first patch for raw difftree line with $patch_idx index
5412                        # we index @$difftree array from 0, but number patches from 1
5413                        print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
5414                }
5415
5416                # git diff header
5417                #assert($patch_line =~ m/^diff /) if DEBUG;
5418                #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
5419                $patch_number++;
5420                # print "git diff" header
5421                print format_git_diff_header_line($patch_line, $diffinfo,
5422                                                  \%from, \%to);
5423
5424                # print extended diff header
5425                print "<div class=\"diff extended_header\">\n";
5426        EXTENDED_HEADER:
5427                while ($patch_line = <$fd>) {
5428                        chomp $patch_line;
5429
5430                        last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
5431
5432                        print format_extended_diff_header_line($patch_line, $diffinfo,
5433                                                               \%from, \%to);
5434                }
5435                print "</div>\n"; # class="diff extended_header"
5436
5437                # from-file/to-file diff header
5438                if (! $patch_line) {
5439                        print "</div>\n"; # class="patch"
5440                        last PATCH;
5441                }
5442                next PATCH if ($patch_line =~ m/^diff /);
5443                #assert($patch_line =~ m/^---/) if DEBUG;
5444
5445                my $last_patch_line = $patch_line;
5446                $patch_line = <$fd>;
5447                chomp $patch_line;
5448                #assert($patch_line =~ m/^\+\+\+/) if DEBUG;
5449
5450                print format_diff_from_to_header($last_patch_line, $patch_line,
5451                                                 $diffinfo, \%from, \%to,
5452                                                 @hash_parents);
5453
5454                # the patch itself
5455        LINE:
5456                while ($patch_line = <$fd>) {
5457                        chomp $patch_line;
5458
5459                        next PATCH if ($patch_line =~ m/^diff /);
5460
5461                        my $class = diff_line_class($patch_line, \%from, \%to);
5462
5463                        if ($class eq 'chunk_header') {
5464                                print_diff_chunk($diff_style, scalar @hash_parents, \%from, \%to, @chunk);
5465                                @chunk = ();
5466                        }
5467
5468                        push @chunk, [ $class, $patch_line ];
5469                }
5470
5471        } continue {
5472                if (@chunk) {
5473                        print_diff_chunk($diff_style, scalar @hash_parents, \%from, \%to, @chunk);
5474                        @chunk = ();
5475                }
5476                print "</div>\n"; # class="patch"
5477        }
5478
5479        # for compact combined (--cc) format, with chunk and patch simplification
5480        # the patchset might be empty, but there might be unprocessed raw lines
5481        for (++$patch_idx if $patch_number > 0;
5482             $patch_idx < @$difftree;
5483             ++$patch_idx) {
5484                # read and prepare patch information
5485                $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
5486
5487                # generate anchor for "patch" links in difftree / whatchanged part
5488                print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
5489                      format_diff_cc_simplified($diffinfo, @hash_parents) .
5490                      "</div>\n";  # class="patch"
5491
5492                $patch_number++;
5493        }
5494
5495        if ($patch_number == 0) {
5496                if (@hash_parents > 1) {
5497                        print "<div class=\"diff nodifferences\">Trivial merge</div>\n";
5498                } else {
5499                        print "<div class=\"diff nodifferences\">No differences found</div>\n";
5500                }
5501        }
5502
5503        print "</div>\n"; # class="patchset"
5504}
5505
5506# . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5507
5508sub git_project_search_form {
5509        my ($searchtext, $search_use_regexp) = @_;
5510
5511        my $limit = '';
5512        if ($project_filter) {
5513                $limit = " in '$project_filter/'";
5514        }
5515
5516        print "<div class=\"projsearch\">\n";
5517        print $cgi->start_form(-method => 'get', -action => $my_uri) .
5518              $cgi->hidden(-name => 'a', -value => 'project_list')  . "\n";
5519        print $cgi->hidden(-name => 'pf', -value => $project_filter). "\n"
5520                if (defined $project_filter);
5521        print $cgi->textfield(-name => 's', -value => $searchtext,
5522                              -title => "Search project by name and description$limit",
5523                              -size => 60) . "\n" .
5524              "<span title=\"Extended regular expression\">" .
5525              $cgi->checkbox(-name => 'sr', -value => 1, -label => 're',
5526                             -checked => $search_use_regexp) .
5527              "</span>\n" .
5528              $cgi->submit(-name => 'btnS', -value => 'Search') .
5529              $cgi->end_form() . "\n" .
5530              $cgi->a({-href => href(project => undef, searchtext => undef,
5531                                     project_filter => $project_filter)},
5532                      esc_html("List all projects$limit")) . "<br />\n";
5533        print "</div>\n";
5534}
5535
5536# entry for given @keys needs filling if at least one of keys in list
5537# is not present in %$project_info
5538sub project_info_needs_filling {
5539        my ($project_info, @keys) = @_;
5540
5541        # return List::MoreUtils::any { !exists $project_info->{$_} } @keys;
5542        foreach my $key (@keys) {
5543                if (!exists $project_info->{$key}) {
5544                        return 1;
5545                }
5546        }
5547        return;
5548}
5549
5550# fills project list info (age, description, owner, category, forks, etc.)
5551# for each project in the list, removing invalid projects from
5552# returned list, or fill only specified info.
5553#
5554# Invalid projects are removed from the returned list if and only if you
5555# ask 'age' or 'age_string' to be filled, because they are the only fields
5556# that run unconditionally git command that requires repository, and
5557# therefore do always check if project repository is invalid.
5558#
5559# USAGE:
5560# * fill_project_list_info(\@project_list, 'descr_long', 'ctags')
5561#   ensures that 'descr_long' and 'ctags' fields are filled
5562# * @project_list = fill_project_list_info(\@project_list)
5563#   ensures that all fields are filled (and invalid projects removed)
5564#
5565# NOTE: modifies $projlist, but does not remove entries from it
5566sub fill_project_list_info {
5567        my ($projlist, @wanted_keys) = @_;
5568        my @projects;
5569        my $filter_set = sub { return @_; };
5570        if (@wanted_keys) {
5571                my %wanted_keys = map { $_ => 1 } @wanted_keys;
5572                $filter_set = sub { return grep { $wanted_keys{$_} } @_; };
5573        }
5574
5575        my $show_ctags = gitweb_check_feature('ctags');
5576 PROJECT:
5577        foreach my $pr (@$projlist) {
5578                if (project_info_needs_filling($pr, $filter_set->('age', 'age_string'))) {
5579                        my (@activity) = git_get_last_activity($pr->{'path'});
5580                        unless (@activity) {
5581                                next PROJECT;
5582                        }
5583                        ($pr->{'age'}, $pr->{'age_string'}) = @activity;
5584                }
5585                if (project_info_needs_filling($pr, $filter_set->('descr', 'descr_long'))) {
5586                        my $descr = git_get_project_description($pr->{'path'}) || "";
5587                        $descr = to_utf8($descr);
5588                        $pr->{'descr_long'} = $descr;
5589                        $pr->{'descr'} = chop_str($descr, $projects_list_description_width, 5);
5590                }
5591                if (project_info_needs_filling($pr, $filter_set->('owner'))) {
5592                        $pr->{'owner'} = git_get_project_owner("$pr->{'path'}") || "";
5593                }
5594                if ($show_ctags &&
5595                    project_info_needs_filling($pr, $filter_set->('ctags'))) {
5596                        $pr->{'ctags'} = git_get_project_ctags($pr->{'path'});
5597                }
5598                if ($projects_list_group_categories &&
5599                    project_info_needs_filling($pr, $filter_set->('category'))) {
5600                        my $cat = git_get_project_category($pr->{'path'}) ||
5601                                                           $project_list_default_category;
5602                        $pr->{'category'} = to_utf8($cat);
5603                }
5604
5605                push @projects, $pr;
5606        }
5607
5608        return @projects;
5609}
5610
5611sub sort_projects_list {
5612        my ($projlist, $order) = @_;
5613
5614        sub order_str {
5615                my $key = shift;
5616                return sub { $a->{$key} cmp $b->{$key} };
5617        }
5618
5619        sub order_num_then_undef {
5620                my $key = shift;
5621                return sub {
5622                        defined $a->{$key} ?
5623                                (defined $b->{$key} ? $a->{$key} <=> $b->{$key} : -1) :
5624                                (defined $b->{$key} ? 1 : 0)
5625                };
5626        }
5627
5628        my %orderings = (
5629                project => order_str('path'),
5630                descr => order_str('descr_long'),
5631                owner => order_str('owner'),
5632                age => order_num_then_undef('age'),
5633        );
5634
5635        my $ordering = $orderings{$order};
5636        return defined $ordering ? sort $ordering @$projlist : @$projlist;
5637}
5638
5639# returns a hash of categories, containing the list of project
5640# belonging to each category
5641sub build_projlist_by_category {
5642        my ($projlist, $from, $to) = @_;
5643        my %categories;
5644
5645        $from = 0 unless defined $from;
5646        $to = $#$projlist if (!defined $to || $#$projlist < $to);
5647
5648        for (my $i = $from; $i <= $to; $i++) {
5649                my $pr = $projlist->[$i];
5650                push @{$categories{ $pr->{'category'} }}, $pr;
5651        }
5652
5653        return wantarray ? %categories : \%categories;
5654}
5655
5656# print 'sort by' <th> element, generating 'sort by $name' replay link
5657# if that order is not selected
5658sub print_sort_th {
5659        print format_sort_th(@_);
5660}
5661
5662sub format_sort_th {
5663        my ($name, $order, $header) = @_;
5664        my $sort_th = "";
5665        $header ||= ucfirst($name);
5666
5667        if ($order eq $name) {
5668                $sort_th .= "<th>$header</th>\n";
5669        } else {
5670                $sort_th .= "<th>" .
5671                            $cgi->a({-href => href(-replay=>1, order=>$name),
5672                                     -class => "header"}, $header) .
5673                            "</th>\n";
5674        }
5675
5676        return $sort_th;
5677}
5678
5679sub git_project_list_rows {
5680        my ($projlist, $from, $to, $check_forks) = @_;
5681
5682        $from = 0 unless defined $from;
5683        $to = $#$projlist if (!defined $to || $#$projlist < $to);
5684
5685        my $alternate = 1;
5686        for (my $i = $from; $i <= $to; $i++) {
5687                my $pr = $projlist->[$i];
5688
5689                if ($alternate) {
5690                        print "<tr class=\"dark\">\n";
5691                } else {
5692                        print "<tr class=\"light\">\n";
5693                }
5694                $alternate ^= 1;
5695
5696                if ($check_forks) {
5697                        print "<td>";
5698                        if ($pr->{'forks'}) {
5699                                my $nforks = scalar @{$pr->{'forks'}};
5700                                if ($nforks > 0) {
5701                                        print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks"),
5702                                                       -title => "$nforks forks"}, "+");
5703                                } else {
5704                                        print $cgi->span({-title => "$nforks forks"}, "+");
5705                                }
5706                        }
5707                        print "</td>\n";
5708                }
5709                print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
5710                                        -class => "list"},
5711                                       esc_html_match_hl($pr->{'path'}, $search_regexp)) .
5712                      "</td>\n" .
5713                      "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
5714                                        -class => "list",
5715                                        -title => $pr->{'descr_long'}},
5716                                        $search_regexp
5717                                        ? esc_html_match_hl_chopped($pr->{'descr_long'},
5718                                                                    $pr->{'descr'}, $search_regexp)
5719                                        : esc_html($pr->{'descr'})) .
5720                      "</td>\n";
5721                unless ($omit_owner) {
5722                        print "<td><i>" . chop_and_escape_str($pr->{'owner'}, 15) . "</i></td>\n";
5723                }
5724                unless ($omit_age_column) {
5725                        print "<td class=\"". age_class($pr->{'age'}) . "\">" .
5726                            (defined $pr->{'age_string'} ? $pr->{'age_string'} : "No commits") . "</td>\n";
5727                }
5728                print"<td class=\"link\">" .
5729                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
5730                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
5731                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
5732                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
5733                      ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
5734                      "</td>\n" .
5735                      "</tr>\n";
5736        }
5737}
5738
5739sub git_project_list_body {
5740        # actually uses global variable $project
5741        my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
5742        my @projects = @$projlist;
5743
5744        my $check_forks = gitweb_check_feature('forks');
5745        my $show_ctags  = gitweb_check_feature('ctags');
5746        my $tagfilter = $show_ctags ? $input_params{'ctag'} : undef;
5747        $check_forks = undef
5748                if ($tagfilter || $search_regexp);
5749
5750        # filtering out forks before filling info allows to do less work
5751        @projects = filter_forks_from_projects_list(\@projects)
5752                if ($check_forks);
5753        # search_projects_list pre-fills required info
5754        @projects = search_projects_list(\@projects,
5755                                         'search_regexp' => $search_regexp,
5756                                         'tagfilter'  => $tagfilter)
5757                if ($tagfilter || $search_regexp);
5758        # fill the rest
5759        my @all_fields = ('descr', 'descr_long', 'ctags', 'category');
5760        push @all_fields, ('age', 'age_string') unless($omit_age_column);
5761        push @all_fields, 'owner' unless($omit_owner);
5762        @projects = fill_project_list_info(\@projects, @all_fields);
5763
5764        $order ||= $default_projects_order;
5765        $from = 0 unless defined $from;
5766        $to = $#projects if (!defined $to || $#projects < $to);
5767
5768        # short circuit
5769        if ($from > $to) {
5770                print "<center>\n".
5771                      "<b>No such projects found</b><br />\n".
5772                      "Click ".$cgi->a({-href=>href(project=>undef)},"here")." to view all projects<br />\n".
5773                      "</center>\n<br />\n";
5774                return;
5775        }
5776
5777        @projects = sort_projects_list(\@projects, $order);
5778
5779        if ($show_ctags) {
5780                my $ctags = git_gather_all_ctags(\@projects);
5781                my $cloud = git_populate_project_tagcloud($ctags);
5782                print git_show_project_tagcloud($cloud, 64);
5783        }
5784
5785        print "<table class=\"project_list\">\n";
5786        unless ($no_header) {
5787                print "<tr>\n";
5788                if ($check_forks) {
5789                        print "<th></th>\n";
5790                }
5791                print_sort_th('project', $order, 'Project');
5792                print_sort_th('descr', $order, 'Description');
5793                print_sort_th('owner', $order, 'Owner') unless $omit_owner;
5794                print_sort_th('age', $order, 'Last Change') unless $omit_age_column;
5795                print "<th></th>\n" . # for links
5796                      "</tr>\n";
5797        }
5798
5799        if ($projects_list_group_categories) {
5800                # only display categories with projects in the $from-$to window
5801                @projects = sort {$a->{'category'} cmp $b->{'category'}} @projects[$from..$to];
5802                my %categories = build_projlist_by_category(\@projects, $from, $to);
5803                foreach my $cat (sort keys %categories) {
5804                        unless ($cat eq "") {
5805                                print "<tr>\n";
5806                                if ($check_forks) {
5807                                        print "<td></td>\n";
5808                                }
5809                                print "<td class=\"category\" colspan=\"5\">".esc_html($cat)."</td>\n";
5810                                print "</tr>\n";
5811                        }
5812
5813                        git_project_list_rows($categories{$cat}, undef, undef, $check_forks);
5814                }
5815        } else {
5816                git_project_list_rows(\@projects, $from, $to, $check_forks);
5817        }
5818
5819        if (defined $extra) {
5820                print "<tr>\n";
5821                if ($check_forks) {
5822                        print "<td></td>\n";
5823                }
5824                print "<td colspan=\"5\">$extra</td>\n" .
5825                      "</tr>\n";
5826        }
5827        print "</table>\n";
5828}
5829
5830sub git_log_body {
5831        # uses global variable $project
5832        my ($commitlist, $from, $to, $refs, $extra) = @_;
5833
5834        $from = 0 unless defined $from;
5835        $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
5836
5837        for (my $i = 0; $i <= $to; $i++) {
5838                my %co = %{$commitlist->[$i]};
5839                next if !%co;
5840                my $commit = $co{'id'};
5841                my $ref = format_ref_marker($refs, $commit);
5842                git_print_header_div('commit',
5843                               "<span class=\"age\">$co{'age_string'}</span>" .
5844                               esc_html($co{'title'}) . $ref,
5845                               $commit);
5846                print "<div class=\"title_text\">\n" .
5847                      "<div class=\"log_link\">\n" .
5848                      $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
5849                      " | " .
5850                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
5851                      " | " .
5852                      $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
5853                      "<br/>\n" .
5854                      "</div>\n";
5855                      git_print_authorship(\%co, -tag => 'span');
5856                      print "<br/>\n</div>\n";
5857
5858                print "<div class=\"log_body\">\n";
5859                git_print_log($co{'comment'}, -final_empty_line=> 1);
5860                print "</div>\n";
5861        }
5862        if ($extra) {
5863                print "<div class=\"page_nav\">\n";
5864                print "$extra\n";
5865                print "</div>\n";
5866        }
5867}
5868
5869sub git_shortlog_body {
5870        # uses global variable $project
5871        my ($commitlist, $from, $to, $refs, $extra) = @_;
5872
5873        $from = 0 unless defined $from;
5874        $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
5875
5876        print "<table class=\"shortlog\">\n";
5877        my $alternate = 1;
5878        for (my $i = $from; $i <= $to; $i++) {
5879                my %co = %{$commitlist->[$i]};
5880                my $commit = $co{'id'};
5881                my $ref = format_ref_marker($refs, $commit);
5882                if ($alternate) {
5883                        print "<tr class=\"dark\">\n";
5884                } else {
5885                        print "<tr class=\"light\">\n";
5886                }
5887                $alternate ^= 1;
5888                # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
5889                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
5890                      format_author_html('td', \%co, 10) . "<td>";
5891                print format_subject_html($co{'title'}, $co{'title_short'},
5892                                          href(action=>"commit", hash=>$commit), $ref);
5893                print "</td>\n" .
5894                      "<td class=\"link\">" .
5895                      $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
5896                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
5897                      $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
5898                my $snapshot_links = format_snapshot_links($commit);
5899                if (defined $snapshot_links) {
5900                        print " | " . $snapshot_links;
5901                }
5902                print "</td>\n" .
5903                      "</tr>\n";
5904        }
5905        if (defined $extra) {
5906                print "<tr>\n" .
5907                      "<td colspan=\"4\">$extra</td>\n" .
5908                      "</tr>\n";
5909        }
5910        print "</table>\n";
5911}
5912
5913sub git_history_body {
5914        # Warning: assumes constant type (blob or tree) during history
5915        my ($commitlist, $from, $to, $refs, $extra,
5916            $file_name, $file_hash, $ftype) = @_;
5917
5918        $from = 0 unless defined $from;
5919        $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
5920
5921        print "<table class=\"history\">\n";
5922        my $alternate = 1;
5923        for (my $i = $from; $i <= $to; $i++) {
5924                my %co = %{$commitlist->[$i]};
5925                if (!%co) {
5926                        next;
5927                }
5928                my $commit = $co{'id'};
5929
5930                my $ref = format_ref_marker($refs, $commit);
5931
5932                if ($alternate) {
5933                        print "<tr class=\"dark\">\n";
5934                } else {
5935                        print "<tr class=\"light\">\n";
5936                }
5937                $alternate ^= 1;
5938                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
5939        # shortlog:   format_author_html('td', \%co, 10)
5940                      format_author_html('td', \%co, 15, 3) . "<td>";
5941                # originally git_history used chop_str($co{'title'}, 50)
5942                print format_subject_html($co{'title'}, $co{'title_short'},
5943                                          href(action=>"commit", hash=>$commit), $ref);
5944                print "</td>\n" .
5945                      "<td class=\"link\">" .
5946                      $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
5947                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
5948
5949                if ($ftype eq 'blob') {
5950                        my $blob_current = $file_hash;
5951                        my $blob_parent  = git_get_hash_by_path($commit, $file_name);
5952                        if (defined $blob_current && defined $blob_parent &&
5953                                        $blob_current ne $blob_parent) {
5954                                print " | " .
5955                                        $cgi->a({-href => href(action=>"blobdiff",
5956                                                               hash=>$blob_current, hash_parent=>$blob_parent,
5957                                                               hash_base=>$hash_base, hash_parent_base=>$commit,
5958                                                               file_name=>$file_name)},
5959                                                "diff to current");
5960                        }
5961                }
5962                print "</td>\n" .
5963                      "</tr>\n";
5964        }
5965        if (defined $extra) {
5966                print "<tr>\n" .
5967                      "<td colspan=\"4\">$extra</td>\n" .
5968                      "</tr>\n";
5969        }
5970        print "</table>\n";
5971}
5972
5973sub git_tags_body {
5974        # uses global variable $project
5975        my ($taglist, $from, $to, $extra) = @_;
5976        $from = 0 unless defined $from;
5977        $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
5978
5979        print "<table class=\"tags\">\n";
5980        my $alternate = 1;
5981        for (my $i = $from; $i <= $to; $i++) {
5982                my $entry = $taglist->[$i];
5983                my %tag = %$entry;
5984                my $comment = $tag{'subject'};
5985                my $comment_short;
5986                if (defined $comment) {
5987                        $comment_short = chop_str($comment, 30, 5);
5988                }
5989                if ($alternate) {
5990                        print "<tr class=\"dark\">\n";
5991                } else {
5992                        print "<tr class=\"light\">\n";
5993                }
5994                $alternate ^= 1;
5995                if (defined $tag{'age'}) {
5996                        print "<td><i>$tag{'age'}</i></td>\n";
5997                } else {
5998                        print "<td></td>\n";
5999                }
6000                print "<td>" .
6001                      $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
6002                               -class => "list name"}, esc_html($tag{'name'})) .
6003                      "</td>\n" .
6004                      "<td>";
6005                if (defined $comment) {
6006                        print format_subject_html($comment, $comment_short,
6007                                                  href(action=>"tag", hash=>$tag{'id'}));
6008                }
6009                print "</td>\n" .
6010                      "<td class=\"selflink\">";
6011                if ($tag{'type'} eq "tag") {
6012                        print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
6013                } else {
6014                        print "&nbsp;";
6015                }
6016                print "</td>\n" .
6017                      "<td class=\"link\">" . " | " .
6018                      $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
6019                if ($tag{'reftype'} eq "commit") {
6020                        print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'fullname'})}, "shortlog") .
6021                              " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'fullname'})}, "log");
6022                } elsif ($tag{'reftype'} eq "blob") {
6023                        print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
6024                }
6025                print "</td>\n" .
6026                      "</tr>";
6027        }
6028        if (defined $extra) {
6029                print "<tr>\n" .
6030                      "<td colspan=\"5\">$extra</td>\n" .
6031                      "</tr>\n";
6032        }
6033        print "</table>\n";
6034}
6035
6036sub git_heads_body {
6037        # uses global variable $project
6038        my ($headlist, $head_at, $from, $to, $extra) = @_;
6039        $from = 0 unless defined $from;
6040        $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
6041
6042        print "<table class=\"heads\">\n";
6043        my $alternate = 1;
6044        for (my $i = $from; $i <= $to; $i++) {
6045                my $entry = $headlist->[$i];
6046                my %ref = %$entry;
6047                my $curr = defined $head_at && $ref{'id'} eq $head_at;
6048                if ($alternate) {
6049                        print "<tr class=\"dark\">\n";
6050                } else {
6051                        print "<tr class=\"light\">\n";
6052                }
6053                $alternate ^= 1;
6054                print "<td><i>$ref{'age'}</i></td>\n" .
6055                      ($curr ? "<td class=\"current_head\">" : "<td>") .
6056                      $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'fullname'}),
6057                               -class => "list name"},esc_html($ref{'name'})) .
6058                      "</td>\n" .
6059                      "<td class=\"link\">" .
6060                      $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'fullname'})}, "shortlog") . " | " .
6061                      $cgi->a({-href => href(action=>"log", hash=>$ref{'fullname'})}, "log") . " | " .
6062                      $cgi->a({-href => href(action=>"tree", hash=>$ref{'fullname'}, hash_base=>$ref{'fullname'})}, "tree") .
6063                      "</td>\n" .
6064                      "</tr>";
6065        }
6066        if (defined $extra) {
6067                print "<tr>\n" .
6068                      "<td colspan=\"3\">$extra</td>\n" .
6069                      "</tr>\n";
6070        }
6071        print "</table>\n";
6072}
6073
6074# Display a single remote block
6075sub git_remote_block {
6076        my ($remote, $rdata, $limit, $head) = @_;
6077
6078        my $heads = $rdata->{'heads'};
6079        my $fetch = $rdata->{'fetch'};
6080        my $push = $rdata->{'push'};
6081
6082        my $urls_table = "<table class=\"projects_list\">\n" ;
6083
6084        if (defined $fetch) {
6085                if ($fetch eq $push) {
6086                        $urls_table .= format_repo_url("URL", $fetch);
6087                } else {
6088                        $urls_table .= format_repo_url("Fetch URL", $fetch);
6089                        $urls_table .= format_repo_url("Push URL", $push) if defined $push;
6090                }
6091        } elsif (defined $push) {
6092                $urls_table .= format_repo_url("Push URL", $push);
6093        } else {
6094                $urls_table .= format_repo_url("", "No remote URL");
6095        }
6096
6097        $urls_table .= "</table>\n";
6098
6099        my $dots;
6100        if (defined $limit && $limit < @$heads) {
6101                $dots = $cgi->a({-href => href(action=>"remotes", hash=>$remote)}, "...");
6102        }
6103
6104        print $urls_table;
6105        git_heads_body($heads, $head, 0, $limit, $dots);
6106}
6107
6108# Display a list of remote names with the respective fetch and push URLs
6109sub git_remotes_list {
6110        my ($remotedata, $limit) = @_;
6111        print "<table class=\"heads\">\n";
6112        my $alternate = 1;
6113        my @remotes = sort keys %$remotedata;
6114
6115        my $limited = $limit && $limit < @remotes;
6116
6117        $#remotes = $limit - 1 if $limited;
6118
6119        while (my $remote = shift @remotes) {
6120                my $rdata = $remotedata->{$remote};
6121                my $fetch = $rdata->{'fetch'};
6122                my $push = $rdata->{'push'};
6123                if ($alternate) {
6124                        print "<tr class=\"dark\">\n";
6125                } else {
6126                        print "<tr class=\"light\">\n";
6127                }
6128                $alternate ^= 1;
6129                print "<td>" .
6130                      $cgi->a({-href=> href(action=>'remotes', hash=>$remote),
6131                               -class=> "list name"},esc_html($remote)) .
6132                      "</td>";
6133                print "<td class=\"link\">" .
6134                      (defined $fetch ? $cgi->a({-href=> $fetch}, "fetch") : "fetch") .
6135                      " | " .
6136                      (defined $push ? $cgi->a({-href=> $push}, "push") : "push") .
6137                      "</td>";
6138
6139                print "</tr>\n";
6140        }
6141
6142        if ($limited) {
6143                print "<tr>\n" .
6144                      "<td colspan=\"3\">" .
6145                      $cgi->a({-href => href(action=>"remotes")}, "...") .
6146                      "</td>\n" . "</tr>\n";
6147        }
6148
6149        print "</table>";
6150}
6151
6152# Display remote heads grouped by remote, unless there are too many
6153# remotes, in which case we only display the remote names
6154sub git_remotes_body {
6155        my ($remotedata, $limit, $head) = @_;
6156        if ($limit and $limit < keys %$remotedata) {
6157                git_remotes_list($remotedata, $limit);
6158        } else {
6159                fill_remote_heads($remotedata);
6160                while (my ($remote, $rdata) = each %$remotedata) {
6161                        git_print_section({-class=>"remote", -id=>$remote},
6162                                ["remotes", $remote, $remote], sub {
6163                                        git_remote_block($remote, $rdata, $limit, $head);
6164                                });
6165                }
6166        }
6167}
6168
6169sub git_search_message {
6170        my %co = @_;
6171
6172        my $greptype;
6173        if ($searchtype eq 'commit') {
6174                $greptype = "--grep=";
6175        } elsif ($searchtype eq 'author') {
6176                $greptype = "--author=";
6177        } elsif ($searchtype eq 'committer') {
6178                $greptype = "--committer=";
6179        }
6180        $greptype .= $searchtext;
6181        my @commitlist = parse_commits($hash, 101, (100 * $page), undef,
6182                                       $greptype, '--regexp-ignore-case',
6183                                       $search_use_regexp ? '--extended-regexp' : '--fixed-strings');
6184
6185        my $paging_nav = '';
6186        if ($page > 0) {
6187                $paging_nav .=
6188                        $cgi->a({-href => href(-replay=>1, page=>undef)},
6189                                "first") .
6190                        " &sdot; " .
6191                        $cgi->a({-href => href(-replay=>1, page=>$page-1),
6192                                 -accesskey => "p", -title => "Alt-p"}, "prev");
6193        } else {
6194                $paging_nav .= "first &sdot; prev";
6195        }
6196        my $next_link = '';
6197        if ($#commitlist >= 100) {
6198                $next_link =
6199                        $cgi->a({-href => href(-replay=>1, page=>$page+1),
6200                                 -accesskey => "n", -title => "Alt-n"}, "next");
6201                $paging_nav .= " &sdot; $next_link";
6202        } else {
6203                $paging_nav .= " &sdot; next";
6204        }
6205
6206        git_header_html();
6207
6208        git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
6209        git_print_header_div('commit', esc_html($co{'title'}), $hash);
6210        if ($page == 0 && !@commitlist) {
6211                print "<p>No match.</p>\n";
6212        } else {
6213                git_search_grep_body(\@commitlist, 0, 99, $next_link);
6214        }
6215
6216        git_footer_html();
6217}
6218
6219sub git_search_changes {
6220        my %co = @_;
6221
6222        local $/ = "\n";
6223        open my $fd, '-|', git_cmd(), '--no-pager', 'log', @diff_opts,
6224                '--pretty=format:%H', '--no-abbrev', '--raw', "-S$searchtext",
6225                ($search_use_regexp ? '--pickaxe-regex' : ())
6226                        or die_error(500, "Open git-log failed");
6227
6228        git_header_html();
6229
6230        git_print_page_nav('','', $hash,$co{'tree'},$hash);
6231        git_print_header_div('commit', esc_html($co{'title'}), $hash);
6232
6233        print "<table class=\"pickaxe search\">\n";
6234        my $alternate = 1;
6235        undef %co;
6236        my @files;
6237        while (my $line = <$fd>) {
6238                chomp $line;
6239                next unless $line;
6240
6241                my %set = parse_difftree_raw_line($line);
6242                if (defined $set{'commit'}) {
6243                        # finish previous commit
6244                        if (%co) {
6245                                print "</td>\n" .
6246                                      "<td class=\"link\">" .
6247                                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})},
6248                                              "commit") .
6249                                      " | " .
6250                                      $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'},
6251                                                             hash_base=>$co{'id'})},
6252                                              "tree") .
6253                                      "</td>\n" .
6254                                      "</tr>\n";
6255                        }
6256
6257                        if ($alternate) {
6258                                print "<tr class=\"dark\">\n";
6259                        } else {
6260                                print "<tr class=\"light\">\n";
6261                        }
6262                        $alternate ^= 1;
6263                        %co = parse_commit($set{'commit'});
6264                        my $author = chop_and_escape_str($co{'author_name'}, 15, 5);
6265                        print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
6266                              "<td><i>$author</i></td>\n" .
6267                              "<td>" .
6268                              $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
6269                                      -class => "list subject"},
6270                                      chop_and_escape_str($co{'title'}, 50) . "<br/>");
6271                } elsif (defined $set{'to_id'}) {
6272                        next if ($set{'to_id'} =~ m/^0{40}$/);
6273
6274                        print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
6275                                                     hash=>$set{'to_id'}, file_name=>$set{'to_file'}),
6276                                      -class => "list"},
6277                                      "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
6278                              "<br/>\n";
6279                }
6280        }
6281        close $fd;
6282
6283        # finish last commit (warning: repetition!)
6284        if (%co) {
6285                print "</td>\n" .
6286                      "<td class=\"link\">" .
6287                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})},
6288                              "commit") .
6289                      " | " .
6290                      $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'},
6291                                             hash_base=>$co{'id'})},
6292                              "tree") .
6293                      "</td>\n" .
6294                      "</tr>\n";
6295        }
6296
6297        print "</table>\n";
6298
6299        git_footer_html();
6300}
6301
6302sub git_search_files {
6303        my %co = @_;
6304
6305        local $/ = "\n";
6306        open my $fd, "-|", git_cmd(), 'grep', '-n', '-z',
6307                $search_use_regexp ? ('-E', '-i') : '-F',
6308                $searchtext, $co{'tree'}
6309                        or die_error(500, "Open git-grep failed");
6310
6311        git_header_html();
6312
6313        git_print_page_nav('','', $hash,$co{'tree'},$hash);
6314        git_print_header_div('commit', esc_html($co{'title'}), $hash);
6315
6316        print "<table class=\"grep_search\">\n";
6317        my $alternate = 1;
6318        my $matches = 0;
6319        my $lastfile = '';
6320        my $file_href;
6321        while (my $line = <$fd>) {
6322                chomp $line;
6323                my ($file, $lno, $ltext, $binary);
6324                last if ($matches++ > 1000);
6325                if ($line =~ /^Binary file (.+) matches$/) {
6326                        $file = $1;
6327                        $binary = 1;
6328                } else {
6329                        ($file, $lno, $ltext) = split(/\0/, $line, 3);
6330                        $file =~ s/^$co{'tree'}://;
6331                }
6332                if ($file ne $lastfile) {
6333                        $lastfile and print "</td></tr>\n";
6334                        if ($alternate++) {
6335                                print "<tr class=\"dark\">\n";
6336                        } else {
6337                                print "<tr class=\"light\">\n";
6338                        }
6339                        $file_href = href(action=>"blob", hash_base=>$co{'id'},
6340                                          file_name=>$file);
6341                        print "<td class=\"list\">".
6342                                $cgi->a({-href => $file_href, -class => "list"}, esc_path($file));
6343                        print "</td><td>\n";
6344                        $lastfile = $file;
6345                }
6346                if ($binary) {
6347                        print "<div class=\"binary\">Binary file</div>\n";
6348                } else {
6349                        $ltext = untabify($ltext);
6350                        if ($ltext =~ m/^(.*)($search_regexp)(.*)$/i) {
6351                                $ltext = esc_html($1, -nbsp=>1);
6352                                $ltext .= '<span class="match">';
6353                                $ltext .= esc_html($2, -nbsp=>1);
6354                                $ltext .= '</span>';
6355                                $ltext .= esc_html($3, -nbsp=>1);
6356                        } else {
6357                                $ltext = esc_html($ltext, -nbsp=>1);
6358                        }
6359                        print "<div class=\"pre\">" .
6360                                $cgi->a({-href => $file_href.'#l'.$lno,
6361                                        -class => "linenr"}, sprintf('%4i', $lno)) .
6362                                ' ' .  $ltext . "</div>\n";
6363                }
6364        }
6365        if ($lastfile) {
6366                print "</td></tr>\n";
6367                if ($matches > 1000) {
6368                        print "<div class=\"diff nodifferences\">Too many matches, listing trimmed</div>\n";
6369                }
6370        } else {
6371                print "<div class=\"diff nodifferences\">No matches found</div>\n";
6372        }
6373        close $fd;
6374
6375        print "</table>\n";
6376
6377        git_footer_html();
6378}
6379
6380sub git_search_grep_body {
6381        my ($commitlist, $from, $to, $extra) = @_;
6382        $from = 0 unless defined $from;
6383        $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
6384
6385        print "<table class=\"commit_search\">\n";
6386        my $alternate = 1;
6387        for (my $i = $from; $i <= $to; $i++) {
6388                my %co = %{$commitlist->[$i]};
6389                if (!%co) {
6390                        next;
6391                }
6392                my $commit = $co{'id'};
6393                if ($alternate) {
6394                        print "<tr class=\"dark\">\n";
6395                } else {
6396                        print "<tr class=\"light\">\n";
6397                }
6398                $alternate ^= 1;
6399                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
6400                      format_author_html('td', \%co, 15, 5) .
6401                      "<td>" .
6402                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
6403                               -class => "list subject"},
6404                              chop_and_escape_str($co{'title'}, 50) . "<br/>");
6405                my $comment = $co{'comment'};
6406                foreach my $line (@$comment) {
6407                        if ($line =~ m/^(.*?)($search_regexp)(.*)$/i) {
6408                                my ($lead, $match, $trail) = ($1, $2, $3);
6409                                $match = chop_str($match, 70, 5, 'center');
6410                                my $contextlen = int((80 - length($match))/2);
6411                                $contextlen = 30 if ($contextlen > 30);
6412                                $lead  = chop_str($lead,  $contextlen, 10, 'left');
6413                                $trail = chop_str($trail, $contextlen, 10, 'right');
6414
6415                                $lead  = esc_html($lead);
6416                                $match = esc_html($match);
6417                                $trail = esc_html($trail);
6418
6419                                print "$lead<span class=\"match\">$match</span>$trail<br />";
6420                        }
6421                }
6422                print "</td>\n" .
6423                      "<td class=\"link\">" .
6424                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
6425                      " | " .
6426                      $cgi->a({-href => href(action=>"commitdiff", hash=>$co{'id'})}, "commitdiff") .
6427                      " | " .
6428                      $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
6429                print "</td>\n" .
6430                      "</tr>\n";
6431        }
6432        if (defined $extra) {
6433                print "<tr>\n" .
6434                      "<td colspan=\"3\">$extra</td>\n" .
6435                      "</tr>\n";
6436        }
6437        print "</table>\n";
6438}
6439
6440## ======================================================================
6441## ======================================================================
6442## actions
6443
6444sub git_project_list {
6445        my $order = $input_params{'order'};
6446        if (defined $order && $order !~ m/none|project|descr|owner|age/) {
6447                die_error(400, "Unknown order parameter");
6448        }
6449
6450        my @list = git_get_projects_list($project_filter, $strict_export);
6451        if (!@list) {
6452                die_error(404, "No projects found");
6453        }
6454
6455        git_header_html();
6456        if (defined $home_text && -f $home_text) {
6457                print "<div class=\"index_include\">\n";
6458                insert_file($home_text);
6459                print "</div>\n";
6460        }
6461
6462        git_project_search_form($searchtext, $search_use_regexp);
6463        git_project_list_body(\@list, $order);
6464        git_footer_html();
6465}
6466
6467sub git_forks {
6468        my $order = $input_params{'order'};
6469        if (defined $order && $order !~ m/none|project|descr|owner|age/) {
6470                die_error(400, "Unknown order parameter");
6471        }
6472
6473        my $filter = $project;
6474        $filter =~ s/\.git$//;
6475        my @list = git_get_projects_list($filter);
6476        if (!@list) {
6477                die_error(404, "No forks found");
6478        }
6479
6480        git_header_html();
6481        git_print_page_nav('','');
6482        git_print_header_div('summary', "$project forks");
6483        git_project_list_body(\@list, $order);
6484        git_footer_html();
6485}
6486
6487sub git_project_index {
6488        my @projects = git_get_projects_list($project_filter, $strict_export);
6489        if (!@projects) {
6490                die_error(404, "No projects found");
6491        }
6492
6493        print $cgi->header(
6494                -type => 'text/plain',
6495                -charset => 'utf-8',
6496                -content_disposition => 'inline; filename="index.aux"');
6497
6498        foreach my $pr (@projects) {
6499                if (!exists $pr->{'owner'}) {
6500                        $pr->{'owner'} = git_get_project_owner("$pr->{'path'}");
6501                }
6502
6503                my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
6504                # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
6505                $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
6506                $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
6507                $path  =~ s/ /\+/g;
6508                $owner =~ s/ /\+/g;
6509
6510                print "$path $owner\n";
6511        }
6512}
6513
6514sub git_summary {
6515        my $descr = git_get_project_description($project) || "none";
6516        my %co = parse_commit("HEAD");
6517        my %cd = %co ? parse_date($co{'committer_epoch'}, $co{'committer_tz'}) : ();
6518        my $head = $co{'id'};
6519        my $remote_heads = gitweb_check_feature('remote_heads');
6520
6521        my $owner = git_get_project_owner($project);
6522
6523        my $refs = git_get_references();
6524        # These get_*_list functions return one more to allow us to see if
6525        # there are more ...
6526        my @taglist  = git_get_tags_list(16);
6527        my @headlist = git_get_heads_list(16);
6528        my %remotedata = $remote_heads ? git_get_remotes_list() : ();
6529        my @forklist;
6530        my $check_forks = gitweb_check_feature('forks');
6531
6532        if ($check_forks) {
6533                # find forks of a project
6534                my $filter = $project;
6535                $filter =~ s/\.git$//;
6536                @forklist = git_get_projects_list($filter);
6537                # filter out forks of forks
6538                @forklist = filter_forks_from_projects_list(\@forklist)
6539                        if (@forklist);
6540        }
6541
6542        git_header_html();
6543        git_print_page_nav('summary','', $head);
6544
6545        print "<div class=\"title\">&nbsp;</div>\n";
6546        print "<table class=\"projects_list\">\n" .
6547              "<tr id=\"metadata_desc\"><td>description</td><td>" . esc_html($descr) . "</td></tr>\n";
6548        if ($owner and not $omit_owner) {
6549                print  "<tr id=\"metadata_owner\"><td>owner</td><td>" . esc_html($owner) . "</td></tr>\n";
6550        }
6551        if (defined $cd{'rfc2822'}) {
6552                print "<tr id=\"metadata_lchange\"><td>last change</td>" .
6553                      "<td>".format_timestamp_html(\%cd)."</td></tr>\n";
6554        }
6555
6556        # use per project git URL list in $projectroot/$project/cloneurl
6557        # or make project git URL from git base URL and project name
6558        my $url_tag = "URL";
6559        my @url_list = git_get_project_url_list($project);
6560        @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
6561        foreach my $git_url (@url_list) {
6562                next unless $git_url;
6563                print format_repo_url($url_tag, $git_url);
6564                $url_tag = "";
6565        }
6566
6567        # Tag cloud
6568        my $show_ctags = gitweb_check_feature('ctags');
6569        if ($show_ctags) {
6570                my $ctags = git_get_project_ctags($project);
6571                if (%$ctags) {
6572                        # without ability to add tags, don't show if there are none
6573                        my $cloud = git_populate_project_tagcloud($ctags);
6574                        print "<tr id=\"metadata_ctags\">" .
6575                              "<td>content tags</td>" .
6576                              "<td>".git_show_project_tagcloud($cloud, 48)."</td>" .
6577                              "</tr>\n";
6578                }
6579        }
6580
6581        print "</table>\n";
6582
6583        # If XSS prevention is on, we don't include README.html.
6584        # TODO: Allow a readme in some safe format.
6585        if (!$prevent_xss && -s "$projectroot/$project/README.html") {
6586                print "<div class=\"title\">readme</div>\n" .
6587                      "<div class=\"readme\">\n";
6588                insert_file("$projectroot/$project/README.html");
6589                print "\n</div>\n"; # class="readme"
6590        }
6591
6592        # we need to request one more than 16 (0..15) to check if
6593        # those 16 are all
6594        my @commitlist = $head ? parse_commits($head, 17) : ();
6595        if (@commitlist) {
6596                git_print_header_div('shortlog');
6597                git_shortlog_body(\@commitlist, 0, 15, $refs,
6598                                  $#commitlist <=  15 ? undef :
6599                                  $cgi->a({-href => href(action=>"shortlog")}, "..."));
6600        }
6601
6602        if (@taglist) {
6603                git_print_header_div('tags');
6604                git_tags_body(\@taglist, 0, 15,
6605                              $#taglist <=  15 ? undef :
6606                              $cgi->a({-href => href(action=>"tags")}, "..."));
6607        }
6608
6609        if (@headlist) {
6610                git_print_header_div('heads');
6611                git_heads_body(\@headlist, $head, 0, 15,
6612                               $#headlist <= 15 ? undef :
6613                               $cgi->a({-href => href(action=>"heads")}, "..."));
6614        }
6615
6616        if (%remotedata) {
6617                git_print_header_div('remotes');
6618                git_remotes_body(\%remotedata, 15, $head);
6619        }
6620
6621        if (@forklist) {
6622                git_print_header_div('forks');
6623                git_project_list_body(\@forklist, 'age', 0, 15,
6624                                      $#forklist <= 15 ? undef :
6625                                      $cgi->a({-href => href(action=>"forks")}, "..."),
6626                                      'no_header');
6627        }
6628
6629        git_footer_html();
6630}
6631
6632sub git_tag {
6633        my %tag = parse_tag($hash);
6634
6635        if (! %tag) {
6636                die_error(404, "Unknown tag object");
6637        }
6638
6639        my $head = git_get_head_hash($project);
6640        git_header_html();
6641        git_print_page_nav('','', $head,undef,$head);
6642        git_print_header_div('commit', esc_html($tag{'name'}), $hash);
6643        print "<div class=\"title_text\">\n" .
6644              "<table class=\"object_header\">\n" .
6645              "<tr>\n" .
6646              "<td>object</td>\n" .
6647              "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
6648                               $tag{'object'}) . "</td>\n" .
6649              "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
6650                                              $tag{'type'}) . "</td>\n" .
6651              "</tr>\n";
6652        if (defined($tag{'author'})) {
6653                git_print_authorship_rows(\%tag, 'author');
6654        }
6655        print "</table>\n\n" .
6656              "</div>\n";
6657        print "<div class=\"page_body\">";
6658        my $comment = $tag{'comment'};
6659        foreach my $line (@$comment) {
6660                chomp $line;
6661                print esc_html($line, -nbsp=>1) . "<br/>\n";
6662        }
6663        print "</div>\n";
6664        git_footer_html();
6665}
6666
6667sub git_blame_common {
6668        my $format = shift || 'porcelain';
6669        if ($format eq 'porcelain' && $input_params{'javascript'}) {
6670                $format = 'incremental';
6671                $action = 'blame_incremental'; # for page title etc
6672        }
6673
6674        # permissions
6675        gitweb_check_feature('blame')
6676                or die_error(403, "Blame view not allowed");
6677
6678        # error checking
6679        die_error(400, "No file name given") unless $file_name;
6680        $hash_base ||= git_get_head_hash($project);
6681        die_error(404, "Couldn't find base commit") unless $hash_base;
6682        my %co = parse_commit($hash_base)
6683                or die_error(404, "Commit not found");
6684        my $ftype = "blob";
6685        if (!defined $hash) {
6686                $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
6687                        or die_error(404, "Error looking up file");
6688        } else {
6689                $ftype = git_get_type($hash);
6690                if ($ftype !~ "blob") {
6691                        die_error(400, "Object is not a blob");
6692                }
6693        }
6694
6695        my $fd;
6696        if ($format eq 'incremental') {
6697                # get file contents (as base)
6698                open $fd, "-|", git_cmd(), 'cat-file', 'blob', $hash
6699                        or die_error(500, "Open git-cat-file failed");
6700        } elsif ($format eq 'data') {
6701                # run git-blame --incremental
6702                open $fd, "-|", git_cmd(), "blame", "--incremental",
6703                        $hash_base, "--", $file_name
6704                        or die_error(500, "Open git-blame --incremental failed");
6705        } else {
6706                # run git-blame --porcelain
6707                open $fd, "-|", git_cmd(), "blame", '-p',
6708                        $hash_base, '--', $file_name
6709                        or die_error(500, "Open git-blame --porcelain failed");
6710        }
6711        binmode $fd, ':utf8';
6712
6713        # incremental blame data returns early
6714        if ($format eq 'data') {
6715                print $cgi->header(
6716                        -type=>"text/plain", -charset => "utf-8",
6717                        -status=> "200 OK");
6718                local $| = 1; # output autoflush
6719                while (my $line = <$fd>) {
6720                        print to_utf8($line);
6721                }
6722                close $fd
6723                        or print "ERROR $!\n";
6724
6725                print 'END';
6726                if (defined $t0 && gitweb_check_feature('timed')) {
6727                        print ' '.
6728                              tv_interval($t0, [ gettimeofday() ]).
6729                              ' '.$number_of_git_cmds;
6730                }
6731                print "\n";
6732
6733                return;
6734        }
6735
6736        # page header
6737        git_header_html();
6738        my $formats_nav =
6739                $cgi->a({-href => href(action=>"blob", -replay=>1)},
6740                        "blob") .
6741                " | ";
6742        if ($format eq 'incremental') {
6743                $formats_nav .=
6744                        $cgi->a({-href => href(action=>"blame", javascript=>0, -replay=>1)},
6745                                "blame") . " (non-incremental)";
6746        } else {
6747                $formats_nav .=
6748                        $cgi->a({-href => href(action=>"blame_incremental", -replay=>1)},
6749                                "blame") . " (incremental)";
6750        }
6751        $formats_nav .=
6752                " | " .
6753                $cgi->a({-href => href(action=>"history", -replay=>1)},
6754                        "history") .
6755                " | " .
6756                $cgi->a({-href => href(action=>$action, file_name=>$file_name)},
6757                        "HEAD");
6758        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
6759        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
6760        git_print_page_path($file_name, $ftype, $hash_base);
6761
6762        # page body
6763        if ($format eq 'incremental') {
6764                print "<noscript>\n<div class=\"error\"><center><b>\n".
6765                      "This page requires JavaScript to run.\n Use ".
6766                      $cgi->a({-href => href(action=>'blame',javascript=>0,-replay=>1)},
6767                              'this page').
6768                      " instead.\n".
6769                      "</b></center></div>\n</noscript>\n";
6770
6771                print qq!<div id="progress_bar" style="width: 100%; background-color: yellow"></div>\n!;
6772        }
6773
6774        print qq!<div class="page_body">\n!;
6775        print qq!<div id="progress_info">... / ...</div>\n!
6776                if ($format eq 'incremental');
6777        print qq!<table id="blame_table" class="blame" width="100%">\n!.
6778              #qq!<col width="5.5em" /><col width="2.5em" /><col width="*" />\n!.
6779              qq!<thead>\n!.
6780              qq!<tr><th>Commit</th><th>Line</th><th>Data</th></tr>\n!.
6781              qq!</thead>\n!.
6782              qq!<tbody>\n!;
6783
6784        my @rev_color = qw(light dark);
6785        my $num_colors = scalar(@rev_color);
6786        my $current_color = 0;
6787
6788        if ($format eq 'incremental') {
6789                my $color_class = $rev_color[$current_color];
6790
6791                #contents of a file
6792                my $linenr = 0;
6793        LINE:
6794                while (my $line = <$fd>) {
6795                        chomp $line;
6796                        $linenr++;
6797
6798                        print qq!<tr id="l$linenr" class="$color_class">!.
6799                              qq!<td class="sha1"><a href=""> </a></td>!.
6800                              qq!<td class="linenr">!.
6801                              qq!<a class="linenr" href="">$linenr</a></td>!;
6802                        print qq!<td class="pre">! . esc_html($line) . "</td>\n";
6803                        print qq!</tr>\n!;
6804                }
6805
6806        } else { # porcelain, i.e. ordinary blame
6807                my %metainfo = (); # saves information about commits
6808
6809                # blame data
6810        LINE:
6811                while (my $line = <$fd>) {
6812                        chomp $line;
6813                        # the header: <SHA-1> <src lineno> <dst lineno> [<lines in group>]
6814                        # no <lines in group> for subsequent lines in group of lines
6815                        my ($full_rev, $orig_lineno, $lineno, $group_size) =
6816                           ($line =~ /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/);
6817                        if (!exists $metainfo{$full_rev}) {
6818                                $metainfo{$full_rev} = { 'nprevious' => 0 };
6819                        }
6820                        my $meta = $metainfo{$full_rev};
6821                        my $data;
6822                        while ($data = <$fd>) {
6823                                chomp $data;
6824                                last if ($data =~ s/^\t//); # contents of line
6825                                if ($data =~ /^(\S+)(?: (.*))?$/) {
6826                                        $meta->{$1} = $2 unless exists $meta->{$1};
6827                                }
6828                                if ($data =~ /^previous /) {
6829                                        $meta->{'nprevious'}++;
6830                                }
6831                        }
6832                        my $short_rev = substr($full_rev, 0, 8);
6833                        my $author = $meta->{'author'};
6834                        my %date =
6835                                parse_date($meta->{'author-time'}, $meta->{'author-tz'});
6836                        my $date = $date{'iso-tz'};
6837                        if ($group_size) {
6838                                $current_color = ($current_color + 1) % $num_colors;
6839                        }
6840                        my $tr_class = $rev_color[$current_color];
6841                        $tr_class .= ' boundary' if (exists $meta->{'boundary'});
6842                        $tr_class .= ' no-previous' if ($meta->{'nprevious'} == 0);
6843                        $tr_class .= ' multiple-previous' if ($meta->{'nprevious'} > 1);
6844                        print "<tr id=\"l$lineno\" class=\"$tr_class\">\n";
6845                        if ($group_size) {
6846                                print "<td class=\"sha1\"";
6847                                print " title=\"". esc_html($author) . ", $date\"";
6848                                print " rowspan=\"$group_size\"" if ($group_size > 1);
6849                                print ">";
6850                                print $cgi->a({-href => href(action=>"commit",
6851                                                             hash=>$full_rev,
6852                                                             file_name=>$file_name)},
6853                                              esc_html($short_rev));
6854                                if ($group_size >= 2) {
6855                                        my @author_initials = ($author =~ /\b([[:upper:]])\B/g);
6856                                        if (@author_initials) {
6857                                                print "<br />" .
6858                                                      esc_html(join('', @author_initials));
6859                                                #           or join('.', ...)
6860                                        }
6861                                }
6862                                print "</td>\n";
6863                        }
6864                        # 'previous' <sha1 of parent commit> <filename at commit>
6865                        if (exists $meta->{'previous'} &&
6866                            $meta->{'previous'} =~ /^([a-fA-F0-9]{40}) (.*)$/) {
6867                                $meta->{'parent'} = $1;
6868                                $meta->{'file_parent'} = unquote($2);
6869                        }
6870                        my $linenr_commit =
6871                                exists($meta->{'parent'}) ?
6872                                $meta->{'parent'} : $full_rev;
6873                        my $linenr_filename =
6874                                exists($meta->{'file_parent'}) ?
6875                                $meta->{'file_parent'} : unquote($meta->{'filename'});
6876                        my $blamed = href(action => 'blame',
6877                                          file_name => $linenr_filename,
6878                                          hash_base => $linenr_commit);
6879                        print "<td class=\"linenr\">";
6880                        print $cgi->a({ -href => "$blamed#l$orig_lineno",
6881                                        -class => "linenr" },
6882                                      esc_html($lineno));
6883                        print "</td>";
6884                        print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
6885                        print "</tr>\n";
6886                } # end while
6887
6888        }
6889
6890        # footer
6891        print "</tbody>\n".
6892              "</table>\n"; # class="blame"
6893        print "</div>\n";   # class="blame_body"
6894        close $fd
6895                or print "Reading blob failed\n";
6896
6897        git_footer_html();
6898}
6899
6900sub git_blame {
6901        git_blame_common();
6902}
6903
6904sub git_blame_incremental {
6905        git_blame_common('incremental');
6906}
6907
6908sub git_blame_data {
6909        git_blame_common('data');
6910}
6911
6912sub git_tags {
6913        my $head = git_get_head_hash($project);
6914        git_header_html();
6915        git_print_page_nav('','', $head,undef,$head,format_ref_views('tags'));
6916        git_print_header_div('summary', $project);
6917
6918        my @tagslist = git_get_tags_list();
6919        if (@tagslist) {
6920                git_tags_body(\@tagslist);
6921        }
6922        git_footer_html();
6923}
6924
6925sub git_heads {
6926        my $head = git_get_head_hash($project);
6927        git_header_html();
6928        git_print_page_nav('','', $head,undef,$head,format_ref_views('heads'));
6929        git_print_header_div('summary', $project);
6930
6931        my @headslist = git_get_heads_list();
6932        if (@headslist) {
6933                git_heads_body(\@headslist, $head);
6934        }
6935        git_footer_html();
6936}
6937
6938# used both for single remote view and for list of all the remotes
6939sub git_remotes {
6940        gitweb_check_feature('remote_heads')
6941                or die_error(403, "Remote heads view is disabled");
6942
6943        my $head = git_get_head_hash($project);
6944        my $remote = $input_params{'hash'};
6945
6946        my $remotedata = git_get_remotes_list($remote);
6947        die_error(500, "Unable to get remote information") unless defined $remotedata;
6948
6949        unless (%$remotedata) {
6950                die_error(404, defined $remote ?
6951                        "Remote $remote not found" :
6952                        "No remotes found");
6953        }
6954
6955        git_header_html(undef, undef, -action_extra => $remote);
6956        git_print_page_nav('', '',  $head, undef, $head,
6957                format_ref_views($remote ? '' : 'remotes'));
6958
6959        fill_remote_heads($remotedata);
6960        if (defined $remote) {
6961                git_print_header_div('remotes', "$remote remote for $project");
6962                git_remote_block($remote, $remotedata->{$remote}, undef, $head);
6963        } else {
6964                git_print_header_div('summary', "$project remotes");
6965                git_remotes_body($remotedata, undef, $head);
6966        }
6967
6968        git_footer_html();
6969}
6970
6971sub git_blob_plain {
6972        my $type = shift;
6973        my $expires;
6974
6975        if (!defined $hash) {
6976                if (defined $file_name) {
6977                        my $base = $hash_base || git_get_head_hash($project);
6978                        $hash = git_get_hash_by_path($base, $file_name, "blob")
6979                                or die_error(404, "Cannot find file");
6980                } else {
6981                        die_error(400, "No file name defined");
6982                }
6983        } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
6984                # blobs defined by non-textual hash id's can be cached
6985                $expires = "+1d";
6986        }
6987
6988        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
6989                or die_error(500, "Open git-cat-file blob '$hash' failed");
6990
6991        # content-type (can include charset)
6992        $type = blob_contenttype($fd, $file_name, $type);
6993
6994        # "save as" filename, even when no $file_name is given
6995        my $save_as = "$hash";
6996        if (defined $file_name) {
6997                $save_as = $file_name;
6998        } elsif ($type =~ m/^text\//) {
6999                $save_as .= '.txt';
7000        }
7001
7002        # With XSS prevention on, blobs of all types except a few known safe
7003        # ones are served with "Content-Disposition: attachment" to make sure
7004        # they don't run in our security domain.  For certain image types,
7005        # blob view writes an <img> tag referring to blob_plain view, and we
7006        # want to be sure not to break that by serving the image as an
7007        # attachment (though Firefox 3 doesn't seem to care).
7008        my $sandbox = $prevent_xss &&
7009                $type !~ m!^(?:text/[a-z]+|image/(?:gif|png|jpeg))(?:[ ;]|$)!;
7010
7011        # serve text/* as text/plain
7012        if ($prevent_xss &&
7013            ($type =~ m!^text/[a-z]+\b(.*)$! ||
7014             ($type =~ m!^[a-z]+/[a-z]\+xml\b(.*)$! && -T $fd))) {
7015                my $rest = $1;
7016                $rest = defined $rest ? $rest : '';
7017                $type = "text/plain$rest";
7018        }
7019
7020        print $cgi->header(
7021                -type => $type,
7022                -expires => $expires,
7023                -content_disposition =>
7024                        ($sandbox ? 'attachment' : 'inline')
7025                        . '; filename="' . $save_as . '"');
7026        local $/ = undef;
7027        binmode STDOUT, ':raw';
7028        print <$fd>;
7029        binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
7030        close $fd;
7031}
7032
7033sub git_blob {
7034        my $expires;
7035
7036        if (!defined $hash) {
7037                if (defined $file_name) {
7038                        my $base = $hash_base || git_get_head_hash($project);
7039                        $hash = git_get_hash_by_path($base, $file_name, "blob")
7040                                or die_error(404, "Cannot find file");
7041                } else {
7042                        die_error(400, "No file name defined");
7043                }
7044        } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
7045                # blobs defined by non-textual hash id's can be cached
7046                $expires = "+1d";
7047        }
7048
7049        my $have_blame = gitweb_check_feature('blame');
7050        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
7051                or die_error(500, "Couldn't cat $file_name, $hash");
7052        my $mimetype = blob_mimetype($fd, $file_name);
7053        # use 'blob_plain' (aka 'raw') view for files that cannot be displayed
7054        if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)! && -B $fd) {
7055                close $fd;
7056                return git_blob_plain($mimetype);
7057        }
7058        # we can have blame only for text/* mimetype
7059        $have_blame &&= ($mimetype =~ m!^text/!);
7060
7061        my $highlight = gitweb_check_feature('highlight');
7062        my $syntax = guess_file_syntax($highlight, $mimetype, $file_name);
7063        $fd = run_highlighter($fd, $highlight, $syntax)
7064                if $syntax;
7065
7066        git_header_html(undef, $expires);
7067        my $formats_nav = '';
7068        if (defined $hash_base && (my %co = parse_commit($hash_base))) {
7069                if (defined $file_name) {
7070                        if ($have_blame) {
7071                                $formats_nav .=
7072                                        $cgi->a({-href => href(action=>"blame", -replay=>1)},
7073                                                "blame") .
7074                                        " | ";
7075                        }
7076                        $formats_nav .=
7077                                $cgi->a({-href => href(action=>"history", -replay=>1)},
7078                                        "history") .
7079                                " | " .
7080                                $cgi->a({-href => href(action=>"blob_plain", -replay=>1)},
7081                                        "raw") .
7082                                " | " .
7083                                $cgi->a({-href => href(action=>"blob",
7084                                                       hash_base=>"HEAD", file_name=>$file_name)},
7085                                        "HEAD");
7086                } else {
7087                        $formats_nav .=
7088                                $cgi->a({-href => href(action=>"blob_plain", -replay=>1)},
7089                                        "raw");
7090                }
7091                git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
7092                git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
7093        } else {
7094                print "<div class=\"page_nav\">\n" .
7095                      "<br/><br/></div>\n" .
7096                      "<div class=\"title\">".esc_html($hash)."</div>\n";
7097        }
7098        git_print_page_path($file_name, "blob", $hash_base);
7099        print "<div class=\"page_body\">\n";
7100        if ($mimetype =~ m!^image/!) {
7101                print qq!<img class="blob" type="!.esc_attr($mimetype).qq!"!;
7102                if ($file_name) {
7103                        print qq! alt="!.esc_attr($file_name).qq!" title="!.esc_attr($file_name).qq!"!;
7104                }
7105                print qq! src="! .
7106                      href(action=>"blob_plain", hash=>$hash,
7107                           hash_base=>$hash_base, file_name=>$file_name) .
7108                      qq!" />\n!;
7109        } else {
7110                my $nr;
7111                while (my $line = <$fd>) {
7112                        chomp $line;
7113                        $nr++;
7114                        $line = untabify($line);
7115                        printf qq!<div class="pre"><a id="l%i" href="%s#l%i" class="linenr">%4i</a> %s</div>\n!,
7116                               $nr, esc_attr(href(-replay => 1)), $nr, $nr,
7117                               $syntax ? sanitize($line) : esc_html($line, -nbsp=>1);
7118                }
7119        }
7120        close $fd
7121                or print "Reading blob failed.\n";
7122        print "</div>";
7123        git_footer_html();
7124}
7125
7126sub git_tree {
7127        if (!defined $hash_base) {
7128                $hash_base = "HEAD";
7129        }
7130        if (!defined $hash) {
7131                if (defined $file_name) {
7132                        $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
7133                } else {
7134                        $hash = $hash_base;
7135                }
7136        }
7137        die_error(404, "No such tree") unless defined($hash);
7138
7139        my $show_sizes = gitweb_check_feature('show-sizes');
7140        my $have_blame = gitweb_check_feature('blame');
7141
7142        my @entries = ();
7143        {
7144                local $/ = "\0";
7145                open my $fd, "-|", git_cmd(), "ls-tree", '-z',
7146                        ($show_sizes ? '-l' : ()), @extra_options, $hash
7147                        or die_error(500, "Open git-ls-tree failed");
7148                @entries = map { chomp; $_ } <$fd>;
7149                close $fd
7150                        or die_error(404, "Reading tree failed");
7151        }
7152
7153        my $refs = git_get_references();
7154        my $ref = format_ref_marker($refs, $hash_base);
7155        git_header_html();
7156        my $basedir = '';
7157        if (defined $hash_base && (my %co = parse_commit($hash_base))) {
7158                my @views_nav = ();
7159                if (defined $file_name) {
7160                        push @views_nav,
7161                                $cgi->a({-href => href(action=>"history", -replay=>1)},
7162                                        "history"),
7163                                $cgi->a({-href => href(action=>"tree",
7164                                                       hash_base=>"HEAD", file_name=>$file_name)},
7165                                        "HEAD"),
7166                }
7167                my $snapshot_links = format_snapshot_links($hash);
7168                if (defined $snapshot_links) {
7169                        # FIXME: Should be available when we have no hash base as well.
7170                        push @views_nav, $snapshot_links;
7171                }
7172                git_print_page_nav('tree','', $hash_base, undef, undef,
7173                                   join(' | ', @views_nav));
7174                git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
7175        } else {
7176                undef $hash_base;
7177                print "<div class=\"page_nav\">\n";
7178                print "<br/><br/></div>\n";
7179                print "<div class=\"title\">".esc_html($hash)."</div>\n";
7180        }
7181        if (defined $file_name) {
7182                $basedir = $file_name;
7183                if ($basedir ne '' && substr($basedir, -1) ne '/') {
7184                        $basedir .= '/';
7185                }
7186                git_print_page_path($file_name, 'tree', $hash_base);
7187        }
7188        print "<div class=\"page_body\">\n";
7189        print "<table class=\"tree\">\n";
7190        my $alternate = 1;
7191        # '..' (top directory) link if possible
7192        if (defined $hash_base &&
7193            defined $file_name && $file_name =~ m![^/]+$!) {
7194                if ($alternate) {
7195                        print "<tr class=\"dark\">\n";
7196                } else {
7197                        print "<tr class=\"light\">\n";
7198                }
7199                $alternate ^= 1;
7200
7201                my $up = $file_name;
7202                $up =~ s!/?[^/]+$!!;
7203                undef $up unless $up;
7204                # based on git_print_tree_entry
7205                print '<td class="mode">' . mode_str('040000') . "</td>\n";
7206                print '<td class="size">&nbsp;</td>'."\n" if $show_sizes;
7207                print '<td class="list">';
7208                print $cgi->a({-href => href(action=>"tree",
7209                                             hash_base=>$hash_base,
7210                                             file_name=>$up)},
7211                              "..");
7212                print "</td>\n";
7213                print "<td class=\"link\"></td>\n";
7214
7215                print "</tr>\n";
7216        }
7217        foreach my $line (@entries) {
7218                my %t = parse_ls_tree_line($line, -z => 1, -l => $show_sizes);
7219
7220                if ($alternate) {
7221                        print "<tr class=\"dark\">\n";
7222                } else {
7223                        print "<tr class=\"light\">\n";
7224                }
7225                $alternate ^= 1;
7226
7227                git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
7228
7229                print "</tr>\n";
7230        }
7231        print "</table>\n" .
7232              "</div>";
7233        git_footer_html();
7234}
7235
7236sub sanitize_for_filename {
7237    my $name = shift;
7238
7239    $name =~ s!/!-!g;
7240    $name =~ s/[^[:alnum:]_.-]//g;
7241
7242    return $name;
7243}
7244
7245sub snapshot_name {
7246        my ($project, $hash) = @_;
7247
7248        # path/to/project.git  -> project
7249        # path/to/project/.git -> project
7250        my $name = to_utf8($project);
7251        $name =~ s,([^/])/*\.git$,$1,;
7252        $name = sanitize_for_filename(basename($name));
7253
7254        my $ver = $hash;
7255        if ($hash =~ /^[0-9a-fA-F]+$/) {
7256                # shorten SHA-1 hash
7257                my $full_hash = git_get_full_hash($project, $hash);
7258                if ($full_hash =~ /^$hash/ && length($hash) > 7) {
7259                        $ver = git_get_short_hash($project, $hash);
7260                }
7261        } elsif ($hash =~ m!^refs/tags/(.*)$!) {
7262                # tags don't need shortened SHA-1 hash
7263                $ver = $1;
7264        } else {
7265                # branches and other need shortened SHA-1 hash
7266                my $strip_refs = join '|', map { quotemeta } get_branch_refs();
7267                if ($hash =~ m!^refs/($strip_refs|remotes)/(.*)$!) {
7268                        my $ref_dir = (defined $1) ? $1 : '';
7269                        $ver = $2;
7270
7271                        $ref_dir = sanitize_for_filename($ref_dir);
7272                        # for refs neither in heads nor remotes we want to
7273                        # add a ref dir to archive name
7274                        if ($ref_dir ne '' and $ref_dir ne 'heads' and $ref_dir ne 'remotes') {
7275                                $ver = $ref_dir . '-' . $ver;
7276                        }
7277                }
7278                $ver .= '-' . git_get_short_hash($project, $hash);
7279        }
7280        # special case of sanitization for filename - we change
7281        # slashes to dots instead of dashes
7282        # in case of hierarchical branch names
7283        $ver =~ s!/!.!g;
7284        $ver =~ s/[^[:alnum:]_.-]//g;
7285
7286        # name = project-version_string
7287        $name = "$name-$ver";
7288
7289        return wantarray ? ($name, $name) : $name;
7290}
7291
7292sub exit_if_unmodified_since {
7293        my ($latest_epoch) = @_;
7294        our $cgi;
7295
7296        my $if_modified = $cgi->http('IF_MODIFIED_SINCE');
7297        if (defined $if_modified) {
7298                my $since;
7299                if (eval { require HTTP::Date; 1; }) {
7300                        $since = HTTP::Date::str2time($if_modified);
7301                } elsif (eval { require Time::ParseDate; 1; }) {
7302                        $since = Time::ParseDate::parsedate($if_modified, GMT => 1);
7303                }
7304                if (defined $since && $latest_epoch <= $since) {
7305                        my %latest_date = parse_date($latest_epoch);
7306                        print $cgi->header(
7307                                -last_modified => $latest_date{'rfc2822'},
7308                                -status => '304 Not Modified');
7309                        goto DONE_GITWEB;
7310                }
7311        }
7312}
7313
7314sub git_snapshot {
7315        my $format = $input_params{'snapshot_format'};
7316        if (!@snapshot_fmts) {
7317                die_error(403, "Snapshots not allowed");
7318        }
7319        # default to first supported snapshot format
7320        $format ||= $snapshot_fmts[0];
7321        if ($format !~ m/^[a-z0-9]+$/) {
7322                die_error(400, "Invalid snapshot format parameter");
7323        } elsif (!exists($known_snapshot_formats{$format})) {
7324                die_error(400, "Unknown snapshot format");
7325        } elsif ($known_snapshot_formats{$format}{'disabled'}) {
7326                die_error(403, "Snapshot format not allowed");
7327        } elsif (!grep($_ eq $format, @snapshot_fmts)) {
7328                die_error(403, "Unsupported snapshot format");
7329        }
7330
7331        my $type = git_get_type("$hash^{}");
7332        if (!$type) {
7333                die_error(404, 'Object does not exist');
7334        }  elsif ($type eq 'blob') {
7335                die_error(400, 'Object is not a tree-ish');
7336        }
7337
7338        my ($name, $prefix) = snapshot_name($project, $hash);
7339        my $filename = "$name$known_snapshot_formats{$format}{'suffix'}";
7340
7341        my %co = parse_commit($hash);
7342        exit_if_unmodified_since($co{'committer_epoch'}) if %co;
7343
7344        my $cmd = quote_command(
7345                git_cmd(), 'archive',
7346                "--format=$known_snapshot_formats{$format}{'format'}",
7347                "--prefix=$prefix/", $hash);
7348        if (exists $known_snapshot_formats{$format}{'compressor'}) {
7349                $cmd .= ' | ' . quote_command(@{$known_snapshot_formats{$format}{'compressor'}});
7350        }
7351
7352        $filename =~ s/(["\\])/\\$1/g;
7353        my %latest_date;
7354        if (%co) {
7355                %latest_date = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
7356        }
7357
7358        print $cgi->header(
7359                -type => $known_snapshot_formats{$format}{'type'},
7360                -content_disposition => 'inline; filename="' . $filename . '"',
7361                %co ? (-last_modified => $latest_date{'rfc2822'}) : (),
7362                -status => '200 OK');
7363
7364        open my $fd, "-|", $cmd
7365                or die_error(500, "Execute git-archive failed");
7366        binmode STDOUT, ':raw';
7367        print <$fd>;
7368        binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
7369        close $fd;
7370}
7371
7372sub git_log_generic {
7373        my ($fmt_name, $body_subr, $base, $parent, $file_name, $file_hash) = @_;
7374
7375        my $head = git_get_head_hash($project);
7376        if (!defined $base) {
7377                $base = $head;
7378        }
7379        if (!defined $page) {
7380                $page = 0;
7381        }
7382        my $refs = git_get_references();
7383
7384        my $commit_hash = $base;
7385        if (defined $parent) {
7386                $commit_hash = "$parent..$base";
7387        }
7388        my @commitlist =
7389                parse_commits($commit_hash, 101, (100 * $page),
7390                              defined $file_name ? ($file_name, "--full-history") : ());
7391
7392        my $ftype;
7393        if (!defined $file_hash && defined $file_name) {
7394                # some commits could have deleted file in question,
7395                # and not have it in tree, but one of them has to have it
7396                for (my $i = 0; $i < @commitlist; $i++) {
7397                        $file_hash = git_get_hash_by_path($commitlist[$i]{'id'}, $file_name);
7398                        last if defined $file_hash;
7399                }
7400        }
7401        if (defined $file_hash) {
7402                $ftype = git_get_type($file_hash);
7403        }
7404        if (defined $file_name && !defined $ftype) {
7405                die_error(500, "Unknown type of object");
7406        }
7407        my %co;
7408        if (defined $file_name) {
7409                %co = parse_commit($base)
7410                        or die_error(404, "Unknown commit object");
7411        }
7412
7413
7414        my $paging_nav = format_paging_nav($fmt_name, $page, $#commitlist >= 100);
7415        my $next_link = '';
7416        if ($#commitlist >= 100) {
7417                $next_link =
7418                        $cgi->a({-href => href(-replay=>1, page=>$page+1),
7419                                 -accesskey => "n", -title => "Alt-n"}, "next");
7420        }
7421        my $patch_max = gitweb_get_feature('patches');
7422        if ($patch_max && !defined $file_name) {
7423                if ($patch_max < 0 || @commitlist <= $patch_max) {
7424                        $paging_nav .= " &sdot; " .
7425                                $cgi->a({-href => href(action=>"patches", -replay=>1)},
7426                                        "patches");
7427                }
7428        }
7429
7430        git_header_html();
7431        git_print_page_nav($fmt_name,'', $hash,$hash,$hash, $paging_nav);
7432        if (defined $file_name) {
7433                git_print_header_div('commit', esc_html($co{'title'}), $base);
7434        } else {
7435                git_print_header_div('summary', $project)
7436        }
7437        git_print_page_path($file_name, $ftype, $hash_base)
7438                if (defined $file_name);
7439
7440        $body_subr->(\@commitlist, 0, 99, $refs, $next_link,
7441                     $file_name, $file_hash, $ftype);
7442
7443        git_footer_html();
7444}
7445
7446sub git_log {
7447        git_log_generic('log', \&git_log_body,
7448                        $hash, $hash_parent);
7449}
7450
7451sub git_commit {
7452        $hash ||= $hash_base || "HEAD";
7453        my %co = parse_commit($hash)
7454            or die_error(404, "Unknown commit object");
7455
7456        my $parent  = $co{'parent'};
7457        my $parents = $co{'parents'}; # listref
7458
7459        # we need to prepare $formats_nav before any parameter munging
7460        my $formats_nav;
7461        if (!defined $parent) {
7462                # --root commitdiff
7463                $formats_nav .= '(initial)';
7464        } elsif (@$parents == 1) {
7465                # single parent commit
7466                $formats_nav .=
7467                        '(parent: ' .
7468                        $cgi->a({-href => href(action=>"commit",
7469                                               hash=>$parent)},
7470                                esc_html(substr($parent, 0, 7))) .
7471                        ')';
7472        } else {
7473                # merge commit
7474                $formats_nav .=
7475                        '(merge: ' .
7476                        join(' ', map {
7477                                $cgi->a({-href => href(action=>"commit",
7478                                                       hash=>$_)},
7479                                        esc_html(substr($_, 0, 7)));
7480                        } @$parents ) .
7481                        ')';
7482        }
7483        if (gitweb_check_feature('patches') && @$parents <= 1) {
7484                $formats_nav .= " | " .
7485                        $cgi->a({-href => href(action=>"patch", -replay=>1)},
7486                                "patch");
7487        }
7488
7489        if (!defined $parent) {
7490                $parent = "--root";
7491        }
7492        my @difftree;
7493        open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
7494                @diff_opts,
7495                (@$parents <= 1 ? $parent : '-c'),
7496                $hash, "--"
7497                or die_error(500, "Open git-diff-tree failed");
7498        @difftree = map { chomp; $_ } <$fd>;
7499        close $fd or die_error(404, "Reading git-diff-tree failed");
7500
7501        # non-textual hash id's can be cached
7502        my $expires;
7503        if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
7504                $expires = "+1d";
7505        }
7506        my $refs = git_get_references();
7507        my $ref = format_ref_marker($refs, $co{'id'});
7508
7509        git_header_html(undef, $expires);
7510        git_print_page_nav('commit', '',
7511                           $hash, $co{'tree'}, $hash,
7512                           $formats_nav);
7513
7514        if (defined $co{'parent'}) {
7515                git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
7516        } else {
7517                git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
7518        }
7519        print "<div class=\"title_text\">\n" .
7520              "<table class=\"object_header\">\n";
7521        git_print_authorship_rows(\%co);
7522        print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
7523        print "<tr>" .
7524              "<td>tree</td>" .
7525              "<td class=\"sha1\">" .
7526              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
7527                       class => "list"}, $co{'tree'}) .
7528              "</td>" .
7529              "<td class=\"link\">" .
7530              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
7531                      "tree");
7532        my $snapshot_links = format_snapshot_links($hash);
7533        if (defined $snapshot_links) {
7534                print " | " . $snapshot_links;
7535        }
7536        print "</td>" .
7537              "</tr>\n";
7538
7539        foreach my $par (@$parents) {
7540                print "<tr>" .
7541                      "<td>parent</td>" .
7542                      "<td class=\"sha1\">" .
7543                      $cgi->a({-href => href(action=>"commit", hash=>$par),
7544                               class => "list"}, $par) .
7545                      "</td>" .
7546                      "<td class=\"link\">" .
7547                      $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
7548                      " | " .
7549                      $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
7550                      "</td>" .
7551                      "</tr>\n";
7552        }
7553        print "</table>".
7554              "</div>\n";
7555
7556        print "<div class=\"page_body\">\n";
7557        git_print_log($co{'comment'});
7558        print "</div>\n";
7559
7560        git_difftree_body(\@difftree, $hash, @$parents);
7561
7562        git_footer_html();
7563}
7564
7565sub git_object {
7566        # object is defined by:
7567        # - hash or hash_base alone
7568        # - hash_base and file_name
7569        my $type;
7570
7571        # - hash or hash_base alone
7572        if ($hash || ($hash_base && !defined $file_name)) {
7573                my $object_id = $hash || $hash_base;
7574
7575                open my $fd, "-|", quote_command(
7576                        git_cmd(), 'cat-file', '-t', $object_id) . ' 2> /dev/null'
7577                        or die_error(404, "Object does not exist");
7578                $type = <$fd>;
7579                chomp $type;
7580                close $fd
7581                        or die_error(404, "Object does not exist");
7582
7583        # - hash_base and file_name
7584        } elsif ($hash_base && defined $file_name) {
7585                $file_name =~ s,/+$,,;
7586
7587                system(git_cmd(), "cat-file", '-e', $hash_base) == 0
7588                        or die_error(404, "Base object does not exist");
7589
7590                # here errors should not happen
7591                open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
7592                        or die_error(500, "Open git-ls-tree failed");
7593                my $line = <$fd>;
7594                close $fd;
7595
7596                #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
7597                unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
7598                        die_error(404, "File or directory for given base does not exist");
7599                }
7600                $type = $2;
7601                $hash = $3;
7602        } else {
7603                die_error(400, "Not enough information to find object");
7604        }
7605
7606        print $cgi->redirect(-uri => href(action=>$type, -full=>1,
7607                                          hash=>$hash, hash_base=>$hash_base,
7608                                          file_name=>$file_name),
7609                             -status => '302 Found');
7610}
7611
7612sub git_blobdiff {
7613        my $format = shift || 'html';
7614        my $diff_style = $input_params{'diff_style'} || 'inline';
7615
7616        my $fd;
7617        my @difftree;
7618        my %diffinfo;
7619        my $expires;
7620
7621        # preparing $fd and %diffinfo for git_patchset_body
7622        # new style URI
7623        if (defined $hash_base && defined $hash_parent_base) {
7624                if (defined $file_name) {
7625                        # read raw output
7626                        open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
7627                                $hash_parent_base, $hash_base,
7628                                "--", (defined $file_parent ? $file_parent : ()), $file_name
7629                                or die_error(500, "Open git-diff-tree failed");
7630                        @difftree = map { chomp; $_ } <$fd>;
7631                        close $fd
7632                                or die_error(404, "Reading git-diff-tree failed");
7633                        @difftree
7634                                or die_error(404, "Blob diff not found");
7635
7636                } elsif (defined $hash &&
7637                         $hash =~ /[0-9a-fA-F]{40}/) {
7638                        # try to find filename from $hash
7639
7640                        # read filtered raw output
7641                        open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
7642                                $hash_parent_base, $hash_base, "--"
7643                                or die_error(500, "Open git-diff-tree failed");
7644                        @difftree =
7645                                # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
7646                                # $hash == to_id
7647                                grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
7648                                map { chomp; $_ } <$fd>;
7649                        close $fd
7650                                or die_error(404, "Reading git-diff-tree failed");
7651                        @difftree
7652                                or die_error(404, "Blob diff not found");
7653
7654                } else {
7655                        die_error(400, "Missing one of the blob diff parameters");
7656                }
7657
7658                if (@difftree > 1) {
7659                        die_error(400, "Ambiguous blob diff specification");
7660                }
7661
7662                %diffinfo = parse_difftree_raw_line($difftree[0]);
7663                $file_parent ||= $diffinfo{'from_file'} || $file_name;
7664                $file_name   ||= $diffinfo{'to_file'};
7665
7666                $hash_parent ||= $diffinfo{'from_id'};
7667                $hash        ||= $diffinfo{'to_id'};
7668
7669                # non-textual hash id's can be cached
7670                if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
7671                    $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
7672                        $expires = '+1d';
7673                }
7674
7675                # open patch output
7676                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
7677                        '-p', ($format eq 'html' ? "--full-index" : ()),
7678                        $hash_parent_base, $hash_base,
7679                        "--", (defined $file_parent ? $file_parent : ()), $file_name
7680                        or die_error(500, "Open git-diff-tree failed");
7681        }
7682
7683        # old/legacy style URI -- not generated anymore since 1.4.3.
7684        if (!%diffinfo) {
7685                die_error('404 Not Found', "Missing one of the blob diff parameters")
7686        }
7687
7688        # header
7689        if ($format eq 'html') {
7690                my $formats_nav =
7691                        $cgi->a({-href => href(action=>"blobdiff_plain", -replay=>1)},
7692                                "raw");
7693                $formats_nav .= diff_style_nav($diff_style);
7694                git_header_html(undef, $expires);
7695                if (defined $hash_base && (my %co = parse_commit($hash_base))) {
7696                        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
7697                        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
7698                } else {
7699                        print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
7700                        print "<div class=\"title\">".esc_html("$hash vs $hash_parent")."</div>\n";
7701                }
7702                if (defined $file_name) {
7703                        git_print_page_path($file_name, "blob", $hash_base);
7704                } else {
7705                        print "<div class=\"page_path\"></div>\n";
7706                }
7707
7708        } elsif ($format eq 'plain') {
7709                print $cgi->header(
7710                        -type => 'text/plain',
7711                        -charset => 'utf-8',
7712                        -expires => $expires,
7713                        -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
7714
7715                print "X-Git-Url: " . $cgi->self_url() . "\n\n";
7716
7717        } else {
7718                die_error(400, "Unknown blobdiff format");
7719        }
7720
7721        # patch
7722        if ($format eq 'html') {
7723                print "<div class=\"page_body\">\n";
7724
7725                git_patchset_body($fd, $diff_style,
7726                                  [ \%diffinfo ], $hash_base, $hash_parent_base);
7727                close $fd;
7728
7729                print "</div>\n"; # class="page_body"
7730                git_footer_html();
7731
7732        } else {
7733                while (my $line = <$fd>) {
7734                        $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
7735                        $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
7736
7737                        print $line;
7738
7739                        last if $line =~ m!^\+\+\+!;
7740                }
7741                local $/ = undef;
7742                print <$fd>;
7743                close $fd;
7744        }
7745}
7746
7747sub git_blobdiff_plain {
7748        git_blobdiff('plain');
7749}
7750
7751# assumes that it is added as later part of already existing navigation,
7752# so it returns "| foo | bar" rather than just "foo | bar"
7753sub diff_style_nav {
7754        my ($diff_style, $is_combined) = @_;
7755        $diff_style ||= 'inline';
7756
7757        return "" if ($is_combined);
7758
7759        my @styles = (inline => 'inline', 'sidebyside' => 'side by side');
7760        my %styles = @styles;
7761        @styles =
7762                @styles[ map { $_ * 2 } 0..$#styles/2 ];
7763
7764        return join '',
7765                map { " | ".$_ }
7766                map {
7767                        $_ eq $diff_style ? $styles{$_} :
7768                        $cgi->a({-href => href(-replay=>1, diff_style => $_)}, $styles{$_})
7769                } @styles;
7770}
7771
7772sub git_commitdiff {
7773        my %params = @_;
7774        my $format = $params{-format} || 'html';
7775        my $diff_style = $input_params{'diff_style'} || 'inline';
7776
7777        my ($patch_max) = gitweb_get_feature('patches');
7778        if ($format eq 'patch') {
7779                die_error(403, "Patch view not allowed") unless $patch_max;
7780        }
7781
7782        $hash ||= $hash_base || "HEAD";
7783        my %co = parse_commit($hash)
7784            or die_error(404, "Unknown commit object");
7785
7786        # choose format for commitdiff for merge
7787        if (! defined $hash_parent && @{$co{'parents'}} > 1) {
7788                $hash_parent = '--cc';
7789        }
7790        # we need to prepare $formats_nav before almost any parameter munging
7791        my $formats_nav;
7792        if ($format eq 'html') {
7793                $formats_nav =
7794                        $cgi->a({-href => href(action=>"commitdiff_plain", -replay=>1)},
7795                                "raw");
7796                if ($patch_max && @{$co{'parents'}} <= 1) {
7797                        $formats_nav .= " | " .
7798                                $cgi->a({-href => href(action=>"patch", -replay=>1)},
7799                                        "patch");
7800                }
7801                $formats_nav .= diff_style_nav($diff_style, @{$co{'parents'}} > 1);
7802
7803                if (defined $hash_parent &&
7804                    $hash_parent ne '-c' && $hash_parent ne '--cc') {
7805                        # commitdiff with two commits given
7806                        my $hash_parent_short = $hash_parent;
7807                        if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
7808                                $hash_parent_short = substr($hash_parent, 0, 7);
7809                        }
7810                        $formats_nav .=
7811                                ' (from';
7812                        for (my $i = 0; $i < @{$co{'parents'}}; $i++) {
7813                                if ($co{'parents'}[$i] eq $hash_parent) {
7814                                        $formats_nav .= ' parent ' . ($i+1);
7815                                        last;
7816                                }
7817                        }
7818                        $formats_nav .= ': ' .
7819                                $cgi->a({-href => href(-replay=>1,
7820                                                       hash=>$hash_parent, hash_base=>undef)},
7821                                        esc_html($hash_parent_short)) .
7822                                ')';
7823                } elsif (!$co{'parent'}) {
7824                        # --root commitdiff
7825                        $formats_nav .= ' (initial)';
7826                } elsif (scalar @{$co{'parents'}} == 1) {
7827                        # single parent commit
7828                        $formats_nav .=
7829                                ' (parent: ' .
7830                                $cgi->a({-href => href(-replay=>1,
7831                                                       hash=>$co{'parent'}, hash_base=>undef)},
7832                                        esc_html(substr($co{'parent'}, 0, 7))) .
7833                                ')';
7834                } else {
7835                        # merge commit
7836                        if ($hash_parent eq '--cc') {
7837                                $formats_nav .= ' | ' .
7838                                        $cgi->a({-href => href(-replay=>1,
7839                                                               hash=>$hash, hash_parent=>'-c')},
7840                                                'combined');
7841                        } else { # $hash_parent eq '-c'
7842                                $formats_nav .= ' | ' .
7843                                        $cgi->a({-href => href(-replay=>1,
7844                                                               hash=>$hash, hash_parent=>'--cc')},
7845                                                'compact');
7846                        }
7847                        $formats_nav .=
7848                                ' (merge: ' .
7849                                join(' ', map {
7850                                        $cgi->a({-href => href(-replay=>1,
7851                                                               hash=>$_, hash_base=>undef)},
7852                                                esc_html(substr($_, 0, 7)));
7853                                } @{$co{'parents'}} ) .
7854                                ')';
7855                }
7856        }
7857
7858        my $hash_parent_param = $hash_parent;
7859        if (!defined $hash_parent_param) {
7860                # --cc for multiple parents, --root for parentless
7861                $hash_parent_param =
7862                        @{$co{'parents'}} > 1 ? '--cc' : $co{'parent'} || '--root';
7863        }
7864
7865        # read commitdiff
7866        my $fd;
7867        my @difftree;
7868        if ($format eq 'html') {
7869                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
7870                        "--no-commit-id", "--patch-with-raw", "--full-index",
7871                        $hash_parent_param, $hash, "--"
7872                        or die_error(500, "Open git-diff-tree failed");
7873
7874                while (my $line = <$fd>) {
7875                        chomp $line;
7876                        # empty line ends raw part of diff-tree output
7877                        last unless $line;
7878                        push @difftree, scalar parse_difftree_raw_line($line);
7879                }
7880
7881        } elsif ($format eq 'plain') {
7882                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
7883                        '-p', $hash_parent_param, $hash, "--"
7884                        or die_error(500, "Open git-diff-tree failed");
7885        } elsif ($format eq 'patch') {
7886                # For commit ranges, we limit the output to the number of
7887                # patches specified in the 'patches' feature.
7888                # For single commits, we limit the output to a single patch,
7889                # diverging from the git-format-patch default.
7890                my @commit_spec = ();
7891                if ($hash_parent) {
7892                        if ($patch_max > 0) {
7893                                push @commit_spec, "-$patch_max";
7894                        }
7895                        push @commit_spec, '-n', "$hash_parent..$hash";
7896                } else {
7897                        if ($params{-single}) {
7898                                push @commit_spec, '-1';
7899                        } else {
7900                                if ($patch_max > 0) {
7901                                        push @commit_spec, "-$patch_max";
7902                                }
7903                                push @commit_spec, "-n";
7904                        }
7905                        push @commit_spec, '--root', $hash;
7906                }
7907                open $fd, "-|", git_cmd(), "format-patch", @diff_opts,
7908                        '--encoding=utf8', '--stdout', @commit_spec
7909                        or die_error(500, "Open git-format-patch failed");
7910        } else {
7911                die_error(400, "Unknown commitdiff format");
7912        }
7913
7914        # non-textual hash id's can be cached
7915        my $expires;
7916        if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
7917                $expires = "+1d";
7918        }
7919
7920        # write commit message
7921        if ($format eq 'html') {
7922                my $refs = git_get_references();
7923                my $ref = format_ref_marker($refs, $co{'id'});
7924
7925                git_header_html(undef, $expires);
7926                git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
7927                git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
7928                print "<div class=\"title_text\">\n" .
7929                      "<table class=\"object_header\">\n";
7930                git_print_authorship_rows(\%co);
7931                print "</table>".
7932                      "</div>\n";
7933                print "<div class=\"page_body\">\n";
7934                if (@{$co{'comment'}} > 1) {
7935                        print "<div class=\"log\">\n";
7936                        git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
7937                        print "</div>\n"; # class="log"
7938                }
7939
7940        } elsif ($format eq 'plain') {
7941                my $refs = git_get_references("tags");
7942                my $tagname = git_get_rev_name_tags($hash);
7943                my $filename = basename($project) . "-$hash.patch";
7944
7945                print $cgi->header(
7946                        -type => 'text/plain',
7947                        -charset => 'utf-8',
7948                        -expires => $expires,
7949                        -content_disposition => 'inline; filename="' . "$filename" . '"');
7950                my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
7951                print "From: " . to_utf8($co{'author'}) . "\n";
7952                print "Date: $ad{'rfc2822'} ($ad{'tz_local'})\n";
7953                print "Subject: " . to_utf8($co{'title'}) . "\n";
7954
7955                print "X-Git-Tag: $tagname\n" if $tagname;
7956                print "X-Git-Url: " . $cgi->self_url() . "\n\n";
7957
7958                foreach my $line (@{$co{'comment'}}) {
7959                        print to_utf8($line) . "\n";
7960                }
7961                print "---\n\n";
7962        } elsif ($format eq 'patch') {
7963                my $filename = basename($project) . "-$hash.patch";
7964
7965                print $cgi->header(
7966                        -type => 'text/plain',
7967                        -charset => 'utf-8',
7968                        -expires => $expires,
7969                        -content_disposition => 'inline; filename="' . "$filename" . '"');
7970        }
7971
7972        # write patch
7973        if ($format eq 'html') {
7974                my $use_parents = !defined $hash_parent ||
7975                        $hash_parent eq '-c' || $hash_parent eq '--cc';
7976                git_difftree_body(\@difftree, $hash,
7977                                  $use_parents ? @{$co{'parents'}} : $hash_parent);
7978                print "<br/>\n";
7979
7980                git_patchset_body($fd, $diff_style,
7981                                  \@difftree, $hash,
7982                                  $use_parents ? @{$co{'parents'}} : $hash_parent);
7983                close $fd;
7984                print "</div>\n"; # class="page_body"
7985                git_footer_html();
7986
7987        } elsif ($format eq 'plain') {
7988                local $/ = undef;
7989                print <$fd>;
7990                close $fd
7991                        or print "Reading git-diff-tree failed\n";
7992        } elsif ($format eq 'patch') {
7993                local $/ = undef;
7994                print <$fd>;
7995                close $fd
7996                        or print "Reading git-format-patch failed\n";
7997        }
7998}
7999
8000sub git_commitdiff_plain {
8001        git_commitdiff(-format => 'plain');
8002}
8003
8004# format-patch-style patches
8005sub git_patch {
8006        git_commitdiff(-format => 'patch', -single => 1);
8007}
8008
8009sub git_patches {
8010        git_commitdiff(-format => 'patch');
8011}
8012
8013sub git_history {
8014        git_log_generic('history', \&git_history_body,
8015                        $hash_base, $hash_parent_base,
8016                        $file_name, $hash);
8017}
8018
8019sub git_search {
8020        $searchtype ||= 'commit';
8021
8022        # check if appropriate features are enabled
8023        gitweb_check_feature('search')
8024                or die_error(403, "Search is disabled");
8025        if ($searchtype eq 'pickaxe') {
8026                # pickaxe may take all resources of your box and run for several minutes
8027                # with every query - so decide by yourself how public you make this feature
8028                gitweb_check_feature('pickaxe')
8029                        or die_error(403, "Pickaxe search is disabled");
8030        }
8031        if ($searchtype eq 'grep') {
8032                # grep search might be potentially CPU-intensive, too
8033                gitweb_check_feature('grep')
8034                        or die_error(403, "Grep search is disabled");
8035        }
8036
8037        if (!defined $searchtext) {
8038                die_error(400, "Text field is empty");
8039        }
8040        if (!defined $hash) {
8041                $hash = git_get_head_hash($project);
8042        }
8043        my %co = parse_commit($hash);
8044        if (!%co) {
8045                die_error(404, "Unknown commit object");
8046        }
8047        if (!defined $page) {
8048                $page = 0;
8049        }
8050
8051        if ($searchtype eq 'commit' ||
8052            $searchtype eq 'author' ||
8053            $searchtype eq 'committer') {
8054                git_search_message(%co);
8055        } elsif ($searchtype eq 'pickaxe') {
8056                git_search_changes(%co);
8057        } elsif ($searchtype eq 'grep') {
8058                git_search_files(%co);
8059        } else {
8060                die_error(400, "Unknown search type");
8061        }
8062}
8063
8064sub git_search_help {
8065        git_header_html();
8066        git_print_page_nav('','', $hash,$hash,$hash);
8067        print <<EOT;
8068<p><strong>Pattern</strong> is by default a normal string that is matched precisely (but without
8069regard to case, except in the case of pickaxe). However, when you check the <em>re</em> checkbox,
8070the pattern entered is recognized as the POSIX extended
8071<a href="http://en.wikipedia.org/wiki/Regular_expression">regular expression</a> (also case
8072insensitive).</p>
8073<dl>
8074<dt><b>commit</b></dt>
8075<dd>The commit messages and authorship information will be scanned for the given pattern.</dd>
8076EOT
8077        my $have_grep = gitweb_check_feature('grep');
8078        if ($have_grep) {
8079                print <<EOT;
8080<dt><b>grep</b></dt>
8081<dd>All files in the currently selected tree (HEAD unless you are explicitly browsing
8082    a different one) are searched for the given pattern. On large trees, this search can take
8083a while and put some strain on the server, so please use it with some consideration. Note that
8084due to git-grep peculiarity, currently if regexp mode is turned off, the matches are
8085case-sensitive.</dd>
8086EOT
8087        }
8088        print <<EOT;
8089<dt><b>author</b></dt>
8090<dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given pattern.</dd>
8091<dt><b>committer</b></dt>
8092<dd>Name and e-mail of the committer and date of commit will be scanned for the given pattern.</dd>
8093EOT
8094        my $have_pickaxe = gitweb_check_feature('pickaxe');
8095        if ($have_pickaxe) {
8096                print <<EOT;
8097<dt><b>pickaxe</b></dt>
8098<dd>All commits that caused the string to appear or disappear from any file (changes that
8099added, removed or "modified" the string) will be listed. This search can take a while and
8100takes a lot of strain on the server, so please use it wisely. Note that since you may be
8101interested even in changes just changing the case as well, this search is case sensitive.</dd>
8102EOT
8103        }
8104        print "</dl>\n";
8105        git_footer_html();
8106}
8107
8108sub git_shortlog {
8109        git_log_generic('shortlog', \&git_shortlog_body,
8110                        $hash, $hash_parent);
8111}
8112
8113## ......................................................................
8114## feeds (RSS, Atom; OPML)
8115
8116sub git_feed {
8117        my $format = shift || 'atom';
8118        my $have_blame = gitweb_check_feature('blame');
8119
8120        # Atom: http://www.atomenabled.org/developers/syndication/
8121        # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
8122        if ($format ne 'rss' && $format ne 'atom') {
8123                die_error(400, "Unknown web feed format");
8124        }
8125
8126        # log/feed of current (HEAD) branch, log of given branch, history of file/directory
8127        my $head = $hash || 'HEAD';
8128        my @commitlist = parse_commits($head, 150, 0, $file_name);
8129
8130        my %latest_commit;
8131        my %latest_date;
8132        my $content_type = "application/$format+xml";
8133        if (defined $cgi->http('HTTP_ACCEPT') &&
8134                 $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
8135                # browser (feed reader) prefers text/xml
8136                $content_type = 'text/xml';
8137        }
8138        if (defined($commitlist[0])) {
8139                %latest_commit = %{$commitlist[0]};
8140                my $latest_epoch = $latest_commit{'committer_epoch'};
8141                exit_if_unmodified_since($latest_epoch);
8142                %latest_date = parse_date($latest_epoch, $latest_commit{'committer_tz'});
8143        }
8144        print $cgi->header(
8145                -type => $content_type,
8146                -charset => 'utf-8',
8147                %latest_date ? (-last_modified => $latest_date{'rfc2822'}) : (),
8148                -status => '200 OK');
8149
8150        # Optimization: skip generating the body if client asks only
8151        # for Last-Modified date.
8152        return if ($cgi->request_method() eq 'HEAD');
8153
8154        # header variables
8155        my $title = "$site_name - $project/$action";
8156        my $feed_type = 'log';
8157        if (defined $hash) {
8158                $title .= " - '$hash'";
8159                $feed_type = 'branch log';
8160                if (defined $file_name) {
8161                        $title .= " :: $file_name";
8162                        $feed_type = 'history';
8163                }
8164        } elsif (defined $file_name) {
8165                $title .= " - $file_name";
8166                $feed_type = 'history';
8167        }
8168        $title .= " $feed_type";
8169        $title = esc_html($title);
8170        my $descr = git_get_project_description($project);
8171        if (defined $descr) {
8172                $descr = esc_html($descr);
8173        } else {
8174                $descr = "$project " .
8175                         ($format eq 'rss' ? 'RSS' : 'Atom') .
8176                         " feed";
8177        }
8178        my $owner = git_get_project_owner($project);
8179        $owner = esc_html($owner);
8180
8181        #header
8182        my $alt_url;
8183        if (defined $file_name) {
8184                $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
8185        } elsif (defined $hash) {
8186                $alt_url = href(-full=>1, action=>"log", hash=>$hash);
8187        } else {
8188                $alt_url = href(-full=>1, action=>"summary");
8189        }
8190        print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
8191        if ($format eq 'rss') {
8192                print <<XML;
8193<rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
8194<channel>
8195XML
8196                print "<title>$title</title>\n" .
8197                      "<link>$alt_url</link>\n" .
8198                      "<description>$descr</description>\n" .
8199                      "<language>en</language>\n" .
8200                      # project owner is responsible for 'editorial' content
8201                      "<managingEditor>$owner</managingEditor>\n";
8202                if (defined $logo || defined $favicon) {
8203                        # prefer the logo to the favicon, since RSS
8204                        # doesn't allow both
8205                        my $img = esc_url($logo || $favicon);
8206                        print "<image>\n" .
8207                              "<url>$img</url>\n" .
8208                              "<title>$title</title>\n" .
8209                              "<link>$alt_url</link>\n" .
8210                              "</image>\n";
8211                }
8212                if (%latest_date) {
8213                        print "<pubDate>$latest_date{'rfc2822'}</pubDate>\n";
8214                        print "<lastBuildDate>$latest_date{'rfc2822'}</lastBuildDate>\n";
8215                }
8216                print "<generator>gitweb v.$version/$git_version</generator>\n";
8217        } elsif ($format eq 'atom') {
8218                print <<XML;
8219<feed xmlns="http://www.w3.org/2005/Atom">
8220XML
8221                print "<title>$title</title>\n" .
8222                      "<subtitle>$descr</subtitle>\n" .
8223                      '<link rel="alternate" type="text/html" href="' .
8224                      $alt_url . '" />' . "\n" .
8225                      '<link rel="self" type="' . $content_type . '" href="' .
8226                      $cgi->self_url() . '" />' . "\n" .
8227                      "<id>" . href(-full=>1) . "</id>\n" .
8228                      # use project owner for feed author
8229                      "<author><name>$owner</name></author>\n";
8230                if (defined $favicon) {
8231                        print "<icon>" . esc_url($favicon) . "</icon>\n";
8232                }
8233                if (defined $logo) {
8234                        # not twice as wide as tall: 72 x 27 pixels
8235                        print "<logo>" . esc_url($logo) . "</logo>\n";
8236                }
8237                if (! %latest_date) {
8238                        # dummy date to keep the feed valid until commits trickle in:
8239                        print "<updated>1970-01-01T00:00:00Z</updated>\n";
8240                } else {
8241                        print "<updated>$latest_date{'iso-8601'}</updated>\n";
8242                }
8243                print "<generator version='$version/$git_version'>gitweb</generator>\n";
8244        }
8245
8246        # contents
8247        for (my $i = 0; $i <= $#commitlist; $i++) {
8248                my %co = %{$commitlist[$i]};
8249                my $commit = $co{'id'};
8250                # we read 150, we always show 30 and the ones more recent than 48 hours
8251                if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
8252                        last;
8253                }
8254                my %cd = parse_date($co{'author_epoch'}, $co{'author_tz'});
8255
8256                # get list of changed files
8257                open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
8258                        $co{'parent'} || "--root",
8259                        $co{'id'}, "--", (defined $file_name ? $file_name : ())
8260                        or next;
8261                my @difftree = map { chomp; $_ } <$fd>;
8262                close $fd
8263                        or next;
8264
8265                # print element (entry, item)
8266                my $co_url = href(-full=>1, action=>"commitdiff", hash=>$commit);
8267                if ($format eq 'rss') {
8268                        print "<item>\n" .
8269                              "<title>" . esc_html($co{'title'}) . "</title>\n" .
8270                              "<author>" . esc_html($co{'author'}) . "</author>\n" .
8271                              "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
8272                              "<guid isPermaLink=\"true\">$co_url</guid>\n" .
8273                              "<link>$co_url</link>\n" .
8274                              "<description>" . esc_html($co{'title'}) . "</description>\n" .
8275                              "<content:encoded>" .
8276                              "<![CDATA[\n";
8277                } elsif ($format eq 'atom') {
8278                        print "<entry>\n" .
8279                              "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
8280                              "<updated>$cd{'iso-8601'}</updated>\n" .
8281                              "<author>\n" .
8282                              "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
8283                        if ($co{'author_email'}) {
8284                                print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
8285                        }
8286                        print "</author>\n" .
8287                              # use committer for contributor
8288                              "<contributor>\n" .
8289                              "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
8290                        if ($co{'committer_email'}) {
8291                                print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
8292                        }
8293                        print "</contributor>\n" .
8294                              "<published>$cd{'iso-8601'}</published>\n" .
8295                              "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
8296                              "<id>$co_url</id>\n" .
8297                              "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
8298                              "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
8299                }
8300                my $comment = $co{'comment'};
8301                print "<pre>\n";
8302                foreach my $line (@$comment) {
8303                        $line = esc_html($line);
8304                        print "$line\n";
8305                }
8306                print "</pre><ul>\n";
8307                foreach my $difftree_line (@difftree) {
8308                        my %difftree = parse_difftree_raw_line($difftree_line);
8309                        next if !$difftree{'from_id'};
8310
8311                        my $file = $difftree{'file'} || $difftree{'to_file'};
8312
8313                        print "<li>" .
8314                              "[" .
8315                              $cgi->a({-href => href(-full=>1, action=>"blobdiff",
8316                                                     hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
8317                                                     hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
8318                                                     file_name=>$file, file_parent=>$difftree{'from_file'}),
8319                                      -title => "diff"}, 'D');
8320                        if ($have_blame) {
8321                                print $cgi->a({-href => href(-full=>1, action=>"blame",
8322                                                             file_name=>$file, hash_base=>$commit),
8323                                              -title => "blame"}, 'B');
8324                        }
8325                        # if this is not a feed of a file history
8326                        if (!defined $file_name || $file_name ne $file) {
8327                                print $cgi->a({-href => href(-full=>1, action=>"history",
8328                                                             file_name=>$file, hash=>$commit),
8329                                              -title => "history"}, 'H');
8330                        }
8331                        $file = esc_path($file);
8332                        print "] ".
8333                              "$file</li>\n";
8334                }
8335                if ($format eq 'rss') {
8336                        print "</ul>]]>\n" .
8337                              "</content:encoded>\n" .
8338                              "</item>\n";
8339                } elsif ($format eq 'atom') {
8340                        print "</ul>\n</div>\n" .
8341                              "</content>\n" .
8342                              "</entry>\n";
8343                }
8344        }
8345
8346        # end of feed
8347        if ($format eq 'rss') {
8348                print "</channel>\n</rss>\n";
8349        } elsif ($format eq 'atom') {
8350                print "</feed>\n";
8351        }
8352}
8353
8354sub git_rss {
8355        git_feed('rss');
8356}
8357
8358sub git_atom {
8359        git_feed('atom');
8360}
8361
8362sub git_opml {
8363        my @list = git_get_projects_list($project_filter, $strict_export);
8364        if (!@list) {
8365                die_error(404, "No projects found");
8366        }
8367
8368        print $cgi->header(
8369                -type => 'text/xml',
8370                -charset => 'utf-8',
8371                -content_disposition => 'inline; filename="opml.xml"');
8372
8373        my $title = esc_html($site_name);
8374        my $filter = " within subdirectory ";
8375        if (defined $project_filter) {
8376                $filter .= esc_html($project_filter);
8377        } else {
8378                $filter = "";
8379        }
8380        print <<XML;
8381<?xml version="1.0" encoding="utf-8"?>
8382<opml version="1.0">
8383<head>
8384  <title>$title OPML Export$filter</title>
8385</head>
8386<body>
8387<outline text="git RSS feeds">
8388XML
8389
8390        foreach my $pr (@list) {
8391                my %proj = %$pr;
8392                my $head = git_get_head_hash($proj{'path'});
8393                if (!defined $head) {
8394                        next;
8395                }
8396                $git_dir = "$projectroot/$proj{'path'}";
8397                my %co = parse_commit($head);
8398                if (!%co) {
8399                        next;
8400                }
8401
8402                my $path = esc_html(chop_str($proj{'path'}, 25, 5));
8403                my $rss  = href('project' => $proj{'path'}, 'action' => 'rss', -full => 1);
8404                my $html = href('project' => $proj{'path'}, 'action' => 'summary', -full => 1);
8405                print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
8406        }
8407        print <<XML;
8408</outline>
8409</body>
8410</opml>
8411XML
8412}