Andrew's git - gitweb.git/blob

1d2f046736062b83fa63e349964232e8f665b6f8
   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
  23our $t0 = [ gettimeofday() ];
  24our $number_of_git_cmds = 0;
  25
  26BEGIN {
  27        CGI->compile() if $ENV{'MOD_PERL'};
  28}
  29
  30our $version = "++GIT_VERSION++";
  31
  32our ($my_url, $my_uri, $base_url, $path_info, $home_link);
  33sub evaluate_uri {
  34        our $cgi;
  35
  36        our $my_url = $cgi->url();
  37        our $my_uri = $cgi->url(-absolute => 1);
  38
  39        # Base URL for relative URLs in gitweb ($logo, $favicon, ...),
  40        # needed and used only for URLs with nonempty PATH_INFO
  41        our $base_url = $my_url;
  42
  43        # When the script is used as DirectoryIndex, the URL does not contain the name
  44        # of the script file itself, and $cgi->url() fails to strip PATH_INFO, so we
  45        # have to do it ourselves. We make $path_info global because it's also used
  46        # later on.
  47        #
  48        # Another issue with the script being the DirectoryIndex is that the resulting
  49        # $my_url data is not the full script URL: this is good, because we want
  50        # generated links to keep implying the script name if it wasn't explicitly
  51        # indicated in the URL we're handling, but it means that $my_url cannot be used
  52        # as base URL.
  53        # Therefore, if we needed to strip PATH_INFO, then we know that we have
  54        # to build the base URL ourselves:
  55        our $path_info = $ENV{"PATH_INFO"};
  56        if ($path_info) {
  57                if ($my_url =~ s,\Q$path_info\E$,, &&
  58                    $my_uri =~ s,\Q$path_info\E$,, &&
  59                    defined $ENV{'SCRIPT_NAME'}) {
  60                        $base_url = $cgi->url(-base => 1) . $ENV{'SCRIPT_NAME'};
  61                }
  62        }
  63
  64        # target of the home link on top of all pages
  65        our $home_link = $my_uri || "/";
  66}
  67
  68# core git executable to use
  69# this can just be "git" if your webserver has a sensible PATH
  70our $GIT = "++GIT_BINDIR++/git";
  71
  72# absolute fs-path which will be prepended to the project path
  73#our $projectroot = "/pub/scm";
  74our $projectroot = "++GITWEB_PROJECTROOT++";
  75
  76# fs traversing limit for getting project list
  77# the number is relative to the projectroot
  78our $project_maxdepth = "++GITWEB_PROJECT_MAXDEPTH++";
  79
  80# string of the home link on top of all pages
  81our $home_link_str = "++GITWEB_HOME_LINK_STR++";
  82
  83# name of your site or organization to appear in page titles
  84# replace this with something more descriptive for clearer bookmarks
  85our $site_name = "++GITWEB_SITENAME++"
  86                 || ($ENV{'SERVER_NAME'} || "Untitled") . " Git";
  87
  88# html snippet to include in the <head> section of each page
  89our $site_html_head_string = "++GITWEB_SITE_HTML_HEAD_STRING++";
  90# filename of html text to include at top of each page
  91our $site_header = "++GITWEB_SITE_HEADER++";
  92# html text to include at home page
  93our $home_text = "++GITWEB_HOMETEXT++";
  94# filename of html text to include at bottom of each page
  95our $site_footer = "++GITWEB_SITE_FOOTER++";
  96
  97# URI of stylesheets
  98our @stylesheets = ("++GITWEB_CSS++");
  99# URI of a single stylesheet, which can be overridden in GITWEB_CONFIG.
 100our $stylesheet = undef;
 101# URI of GIT logo (72x27 size)
 102our $logo = "++GITWEB_LOGO++";
 103# URI of GIT favicon, assumed to be image/png type
 104our $favicon = "++GITWEB_FAVICON++";
 105# URI of gitweb.js (JavaScript code for gitweb)
 106our $javascript = "++GITWEB_JS++";
 107
 108# URI and label (title) of GIT logo link
 109#our $logo_url = "http://www.kernel.org/pub/software/scm/git/docs/";
 110#our $logo_label = "git documentation";
 111our $logo_url = "http://git-scm.com/";
 112our $logo_label = "git homepage";
 113
 114# source of projects list
 115our $projects_list = "++GITWEB_LIST++";
 116
 117# the width (in characters) of the projects list "Description" column
 118our $projects_list_description_width = 25;
 119
 120# group projects by category on the projects list
 121# (enabled if this variable evaluates to true)
 122our $projects_list_group_categories = 0;
 123
 124# default category if none specified
 125# (leave the empty string for no category)
 126our $project_list_default_category = "";
 127
 128# default order of projects list
 129# valid values are none, project, descr, owner, and age
 130our $default_projects_order = "project";
 131
 132# show repository only if this file exists
 133# (only effective if this variable evaluates to true)
 134our $export_ok = "++GITWEB_EXPORT_OK++";
 135
 136# show repository only if this subroutine returns true
 137# when given the path to the project, for example:
 138#    sub { return -e "$_[0]/git-daemon-export-ok"; }
 139our $export_auth_hook = undef;
 140
 141# only allow viewing of repositories also shown on the overview page
 142our $strict_export = "++GITWEB_STRICT_EXPORT++";
 143
 144# list of git base URLs used for URL to where fetch project from,
 145# i.e. full URL is "$git_base_url/$project"
 146our @git_base_url_list = grep { $_ ne '' } ("++GITWEB_BASE_URL++");
 147
 148# default blob_plain mimetype and default charset for text/plain blob
 149our $default_blob_plain_mimetype = 'text/plain';
 150our $default_text_plain_charset  = undef;
 151
 152# file to use for guessing MIME types before trying /etc/mime.types
 153# (relative to the current git repository)
 154our $mimetypes_file = undef;
 155
 156# assume this charset if line contains non-UTF-8 characters;
 157# it should be valid encoding (see Encoding::Supported(3pm) for list),
 158# for which encoding all byte sequences are valid, for example
 159# 'iso-8859-1' aka 'latin1' (it is decoded without checking, so it
 160# could be even 'utf-8' for the old behavior)
 161our $fallback_encoding = 'latin1';
 162
 163# rename detection options for git-diff and git-diff-tree
 164# - default is '-M', with the cost proportional to
 165#   (number of removed files) * (number of new files).
 166# - more costly is '-C' (which implies '-M'), with the cost proportional to
 167#   (number of changed files + number of removed files) * (number of new files)
 168# - even more costly is '-C', '--find-copies-harder' with cost
 169#   (number of files in the original tree) * (number of new files)
 170# - one might want to include '-B' option, e.g. '-B', '-M'
 171our @diff_opts = ('-M'); # taken from git_commit
 172
 173# Disables features that would allow repository owners to inject script into
 174# the gitweb domain.
 175our $prevent_xss = 0;
 176
 177# Path to the highlight executable to use (must be the one from
 178# http://www.andre-simon.de due to assumptions about parameters and output).
 179# Useful if highlight is not installed on your webserver's PATH.
 180# [Default: highlight]
 181our $highlight_bin = "++HIGHLIGHT_BIN++";
 182
 183# information about snapshot formats that gitweb is capable of serving
 184our %known_snapshot_formats = (
 185        # name => {
 186        #       'display' => display name,
 187        #       'type' => mime type,
 188        #       'suffix' => filename suffix,
 189        #       'format' => --format for git-archive,
 190        #       'compressor' => [compressor command and arguments]
 191        #                       (array reference, optional)
 192        #       'disabled' => boolean (optional)}
 193        #
 194        'tgz' => {
 195                'display' => 'tar.gz',
 196                'type' => 'application/x-gzip',
 197                'suffix' => '.tar.gz',
 198                'format' => 'tar',
 199                'compressor' => ['gzip', '-n']},
 200
 201        'tbz2' => {
 202                'display' => 'tar.bz2',
 203                'type' => 'application/x-bzip2',
 204                'suffix' => '.tar.bz2',
 205                'format' => 'tar',
 206                'compressor' => ['bzip2']},
 207
 208        'txz' => {
 209                'display' => 'tar.xz',
 210                'type' => 'application/x-xz',
 211                'suffix' => '.tar.xz',
 212                'format' => 'tar',
 213                'compressor' => ['xz'],
 214                'disabled' => 1},
 215
 216        'zip' => {
 217                'display' => 'zip',
 218                'type' => 'application/x-zip',
 219                'suffix' => '.zip',
 220                'format' => 'zip'},
 221);
 222
 223# Aliases so we understand old gitweb.snapshot values in repository
 224# configuration.
 225our %known_snapshot_format_aliases = (
 226        'gzip'  => 'tgz',
 227        'bzip2' => 'tbz2',
 228        'xz'    => 'txz',
 229
 230        # backward compatibility: legacy gitweb config support
 231        'x-gzip' => undef, 'gz' => undef,
 232        'x-bzip2' => undef, 'bz2' => undef,
 233        'x-zip' => undef, '' => undef,
 234);
 235
 236# Pixel sizes for icons and avatars. If the default font sizes or lineheights
 237# are changed, it may be appropriate to change these values too via
 238# $GITWEB_CONFIG.
 239our %avatar_size = (
 240        'default' => 16,
 241        'double'  => 32
 242);
 243
 244# Used to set the maximum load that we will still respond to gitweb queries.
 245# If server load exceed this value then return "503 server busy" error.
 246# If gitweb cannot determined server load, it is taken to be 0.
 247# Leave it undefined (or set to 'undef') to turn off load checking.
 248our $maxload = 300;
 249
 250# configuration for 'highlight' (http://www.andre-simon.de/)
 251# match by basename
 252our %highlight_basename = (
 253        #'Program' => 'py',
 254        #'Library' => 'py',
 255        'SConstruct' => 'py', # SCons equivalent of Makefile
 256        'Makefile' => 'make',
 257);
 258# match by extension
 259our %highlight_ext = (
 260        # main extensions, defining name of syntax;
 261        # see files in /usr/share/highlight/langDefs/ directory
 262        map { $_ => $_ }
 263                qw(py c cpp rb java css php sh pl js tex bib xml awk bat ini spec tcl sql make),
 264        # alternate extensions, see /etc/highlight/filetypes.conf
 265        'h' => 'c',
 266        map { $_ => 'sh'  } qw(bash zsh ksh),
 267        map { $_ => 'cpp' } qw(cxx c++ cc),
 268        map { $_ => 'php' } qw(php3 php4 php5 phps),
 269        map { $_ => 'pl'  } qw(perl pm), # perhaps also 'cgi'
 270        map { $_ => 'make'} qw(mak mk),
 271        map { $_ => 'xml' } qw(xhtml html htm),
 272);
 273
 274# You define site-wide feature defaults here; override them with
 275# $GITWEB_CONFIG as necessary.
 276our %feature = (
 277        # feature => {
 278        #       'sub' => feature-sub (subroutine),
 279        #       'override' => allow-override (boolean),
 280        #       'default' => [ default options...] (array reference)}
 281        #
 282        # if feature is overridable (it means that allow-override has true value),
 283        # then feature-sub will be called with default options as parameters;
 284        # return value of feature-sub indicates if to enable specified feature
 285        #
 286        # if there is no 'sub' key (no feature-sub), then feature cannot be
 287        # overridden
 288        #
 289        # use gitweb_get_feature(<feature>) to retrieve the <feature> value
 290        # (an array) or gitweb_check_feature(<feature>) to check if <feature>
 291        # is enabled
 292
 293        # Enable the 'blame' blob view, showing the last commit that modified
 294        # each line in the file. This can be very CPU-intensive.
 295
 296        # To enable system wide have in $GITWEB_CONFIG
 297        # $feature{'blame'}{'default'} = [1];
 298        # To have project specific config enable override in $GITWEB_CONFIG
 299        # $feature{'blame'}{'override'} = 1;
 300        # and in project config gitweb.blame = 0|1;
 301        'blame' => {
 302                'sub' => sub { feature_bool('blame', @_) },
 303                'override' => 0,
 304                'default' => [0]},
 305
 306        # Enable the 'snapshot' link, providing a compressed archive of any
 307        # tree. This can potentially generate high traffic if you have large
 308        # project.
 309
 310        # Value is a list of formats defined in %known_snapshot_formats that
 311        # you wish to offer.
 312        # To disable system wide have in $GITWEB_CONFIG
 313        # $feature{'snapshot'}{'default'} = [];
 314        # To have project specific config enable override in $GITWEB_CONFIG
 315        # $feature{'snapshot'}{'override'} = 1;
 316        # and in project config, a comma-separated list of formats or "none"
 317        # to disable.  Example: gitweb.snapshot = tbz2,zip;
 318        'snapshot' => {
 319                'sub' => \&feature_snapshot,
 320                'override' => 0,
 321                'default' => ['tgz']},
 322
 323        # Enable text search, which will list the commits which match author,
 324        # committer or commit text to a given string.  Enabled by default.
 325        # Project specific override is not supported.
 326        #
 327        # Note that this controls all search features, which means that if
 328        # it is disabled, then 'grep' and 'pickaxe' search would also be
 329        # disabled.
 330        'search' => {
 331                'override' => 0,
 332                'default' => [1]},
 333
 334        # Enable grep search, which will list the files in currently selected
 335        # tree containing the given string. Enabled by default. This can be
 336        # potentially CPU-intensive, of course.
 337        # Note that you need to have 'search' feature enabled too.
 338
 339        # To enable system wide have in $GITWEB_CONFIG
 340        # $feature{'grep'}{'default'} = [1];
 341        # To have project specific config enable override in $GITWEB_CONFIG
 342        # $feature{'grep'}{'override'} = 1;
 343        # and in project config gitweb.grep = 0|1;
 344        'grep' => {
 345                'sub' => sub { feature_bool('grep', @_) },
 346                'override' => 0,
 347                'default' => [1]},
 348
 349        # Enable the pickaxe search, which will list the commits that modified
 350        # a given string in a file. This can be practical and quite faster
 351        # alternative to 'blame', but still potentially CPU-intensive.
 352        # Note that you need to have 'search' feature enabled too.
 353
 354        # To enable system wide have in $GITWEB_CONFIG
 355        # $feature{'pickaxe'}{'default'} = [1];
 356        # To have project specific config enable override in $GITWEB_CONFIG
 357        # $feature{'pickaxe'}{'override'} = 1;
 358        # and in project config gitweb.pickaxe = 0|1;
 359        'pickaxe' => {
 360                'sub' => sub { feature_bool('pickaxe', @_) },
 361                'override' => 0,
 362                'default' => [1]},
 363
 364        # Enable showing size of blobs in a 'tree' view, in a separate
 365        # column, similar to what 'ls -l' does.  This cost a bit of IO.
 366
 367        # To disable system wide have in $GITWEB_CONFIG
 368        # $feature{'show-sizes'}{'default'} = [0];
 369        # To have project specific config enable override in $GITWEB_CONFIG
 370        # $feature{'show-sizes'}{'override'} = 1;
 371        # and in project config gitweb.showsizes = 0|1;
 372        'show-sizes' => {
 373                'sub' => sub { feature_bool('showsizes', @_) },
 374                'override' => 0,
 375                'default' => [1]},
 376
 377        # Make gitweb use an alternative format of the URLs which can be
 378        # more readable and natural-looking: project name is embedded
 379        # directly in the path and the query string contains other
 380        # auxiliary information. All gitweb installations recognize
 381        # URL in either format; this configures in which formats gitweb
 382        # generates links.
 383
 384        # To enable system wide have in $GITWEB_CONFIG
 385        # $feature{'pathinfo'}{'default'} = [1];
 386        # Project specific override is not supported.
 387
 388        # Note that you will need to change the default location of CSS,
 389        # favicon, logo and possibly other files to an absolute URL. Also,
 390        # if gitweb.cgi serves as your indexfile, you will need to force
 391        # $my_uri to contain the script name in your $GITWEB_CONFIG.
 392        'pathinfo' => {
 393                'override' => 0,
 394                'default' => [0]},
 395
 396        # Make gitweb consider projects in project root subdirectories
 397        # to be forks of existing projects. Given project $projname.git,
 398        # projects matching $projname/*.git will not be shown in the main
 399        # projects list, instead a '+' mark will be added to $projname
 400        # there and a 'forks' view will be enabled for the project, listing
 401        # all the forks. If project list is taken from a file, forks have
 402        # to be listed after the main project.
 403
 404        # To enable system wide have in $GITWEB_CONFIG
 405        # $feature{'forks'}{'default'} = [1];
 406        # Project specific override is not supported.
 407        'forks' => {
 408                'override' => 0,
 409                'default' => [0]},
 410
 411        # Insert custom links to the action bar of all project pages.
 412        # This enables you mainly to link to third-party scripts integrating
 413        # into gitweb; e.g. git-browser for graphical history representation
 414        # or custom web-based repository administration interface.
 415
 416        # The 'default' value consists of a list of triplets in the form
 417        # (label, link, position) where position is the label after which
 418        # to insert the link and link is a format string where %n expands
 419        # to the project name, %f to the project path within the filesystem,
 420        # %h to the current hash (h gitweb parameter) and %b to the current
 421        # hash base (hb gitweb parameter); %% expands to %.
 422
 423        # To enable system wide have in $GITWEB_CONFIG e.g.
 424        # $feature{'actions'}{'default'} = [('graphiclog',
 425        #       '/git-browser/by-commit.html?r=%n', 'summary')];
 426        # Project specific override is not supported.
 427        'actions' => {
 428                'override' => 0,
 429                'default' => []},
 430
 431        # Allow gitweb scan project content tags of project repository,
 432        # and display the popular Web 2.0-ish "tag cloud" near the projects
 433        # list.  Note that this is something COMPLETELY different from the
 434        # normal Git tags.
 435
 436        # gitweb by itself can show existing tags, but it does not handle
 437        # tagging itself; you need to do it externally, outside gitweb.
 438        # The format is described in git_get_project_ctags() subroutine.
 439        # You may want to install the HTML::TagCloud Perl module to get
 440        # a pretty tag cloud instead of just a list of tags.
 441
 442        # To enable system wide have in $GITWEB_CONFIG
 443        # $feature{'ctags'}{'default'} = [1];
 444        # Project specific override is not supported.
 445
 446        # In the future whether ctags editing is enabled might depend
 447        # on the value, but using 1 should always mean no editing of ctags.
 448        'ctags' => {
 449                'override' => 0,
 450                'default' => [0]},
 451
 452        # The maximum number of patches in a patchset generated in patch
 453        # view. Set this to 0 or undef to disable patch view, or to a
 454        # negative number to remove any limit.
 455
 456        # To disable system wide have in $GITWEB_CONFIG
 457        # $feature{'patches'}{'default'} = [0];
 458        # To have project specific config enable override in $GITWEB_CONFIG
 459        # $feature{'patches'}{'override'} = 1;
 460        # and in project config gitweb.patches = 0|n;
 461        # where n is the maximum number of patches allowed in a patchset.
 462        'patches' => {
 463                'sub' => \&feature_patches,
 464                'override' => 0,
 465                'default' => [16]},
 466
 467        # Avatar support. When this feature is enabled, views such as
 468        # shortlog or commit will display an avatar associated with
 469        # the email of the committer(s) and/or author(s).
 470
 471        # Currently available providers are gravatar and picon.
 472        # If an unknown provider is specified, the feature is disabled.
 473
 474        # Gravatar depends on Digest::MD5.
 475        # Picon currently relies on the indiana.edu database.
 476
 477        # To enable system wide have in $GITWEB_CONFIG
 478        # $feature{'avatar'}{'default'} = ['<provider>'];
 479        # where <provider> is either gravatar or picon.
 480        # To have project specific config enable override in $GITWEB_CONFIG
 481        # $feature{'avatar'}{'override'} = 1;
 482        # and in project config gitweb.avatar = <provider>;
 483        'avatar' => {
 484                'sub' => \&feature_avatar,
 485                'override' => 0,
 486                'default' => ['']},
 487
 488        # Enable displaying how much time and how many git commands
 489        # it took to generate and display page.  Disabled by default.
 490        # Project specific override is not supported.
 491        'timed' => {
 492                'override' => 0,
 493                'default' => [0]},
 494
 495        # Enable turning some links into links to actions which require
 496        # JavaScript to run (like 'blame_incremental').  Not enabled by
 497        # default.  Project specific override is currently not supported.
 498        'javascript-actions' => {
 499                'override' => 0,
 500                'default' => [0]},
 501
 502        # Enable and configure ability to change common timezone for dates
 503        # in gitweb output via JavaScript.  Enabled by default.
 504        # Project specific override is not supported.
 505        'javascript-timezone' => {
 506                'override' => 0,
 507                'default' => [
 508                        'local',     # default timezone: 'utc', 'local', or '(-|+)HHMM' format,
 509                                     # or undef to turn off this feature
 510                        'gitweb_tz', # name of cookie where to store selected timezone
 511                        'datetime',  # CSS class used to mark up dates for manipulation
 512                ]},
 513
 514        # Syntax highlighting support. This is based on Daniel Svensson's
 515        # and Sham Chukoury's work in gitweb-xmms2.git.
 516        # It requires the 'highlight' program present in $PATH,
 517        # and therefore is disabled by default.
 518
 519        # To enable system wide have in $GITWEB_CONFIG
 520        # $feature{'highlight'}{'default'} = [1];
 521
 522        'highlight' => {
 523                'sub' => sub { feature_bool('highlight', @_) },
 524                'override' => 0,
 525                'default' => [0]},
 526
 527        # Enable displaying of remote heads in the heads list
 528
 529        # To enable system wide have in $GITWEB_CONFIG
 530        # $feature{'remote_heads'}{'default'} = [1];
 531        # To have project specific config enable override in $GITWEB_CONFIG
 532        # $feature{'remote_heads'}{'override'} = 1;
 533        # and in project config gitweb.remote_heads = 0|1;
 534        'remote_heads' => {
 535                'sub' => sub { feature_bool('remote_heads', @_) },
 536                'override' => 0,
 537                'default' => [0]},
 538);
 539
 540sub gitweb_get_feature {
 541        my ($name) = @_;
 542        return unless exists $feature{$name};
 543        my ($sub, $override, @defaults) = (
 544                $feature{$name}{'sub'},
 545                $feature{$name}{'override'},
 546                @{$feature{$name}{'default'}});
 547        # project specific override is possible only if we have project
 548        our $git_dir; # global variable, declared later
 549        if (!$override || !defined $git_dir) {
 550                return @defaults;
 551        }
 552        if (!defined $sub) {
 553                warn "feature $name is not overridable";
 554                return @defaults;
 555        }
 556        return $sub->(@defaults);
 557}
 558
 559# A wrapper to check if a given feature is enabled.
 560# With this, you can say
 561#
 562#   my $bool_feat = gitweb_check_feature('bool_feat');
 563#   gitweb_check_feature('bool_feat') or somecode;
 564#
 565# instead of
 566#
 567#   my ($bool_feat) = gitweb_get_feature('bool_feat');
 568#   (gitweb_get_feature('bool_feat'))[0] or somecode;
 569#
 570sub gitweb_check_feature {
 571        return (gitweb_get_feature(@_))[0];
 572}
 573
 574
 575sub feature_bool {
 576        my $key = shift;
 577        my ($val) = git_get_project_config($key, '--bool');
 578
 579        if (!defined $val) {
 580                return ($_[0]);
 581        } elsif ($val eq 'true') {
 582                return (1);
 583        } elsif ($val eq 'false') {
 584                return (0);
 585        }
 586}
 587
 588sub feature_snapshot {
 589        my (@fmts) = @_;
 590
 591        my ($val) = git_get_project_config('snapshot');
 592
 593        if ($val) {
 594                @fmts = ($val eq 'none' ? () : split /\s*[,\s]\s*/, $val);
 595        }
 596
 597        return @fmts;
 598}
 599
 600sub feature_patches {
 601        my @val = (git_get_project_config('patches', '--int'));
 602
 603        if (@val) {
 604                return @val;
 605        }
 606
 607        return ($_[0]);
 608}
 609
 610sub feature_avatar {
 611        my @val = (git_get_project_config('avatar'));
 612
 613        return @val ? @val : @_;
 614}
 615
 616# checking HEAD file with -e is fragile if the repository was
 617# initialized long time ago (i.e. symlink HEAD) and was pack-ref'ed
 618# and then pruned.
 619sub check_head_link {
 620        my ($dir) = @_;
 621        my $headfile = "$dir/HEAD";
 622        return ((-e $headfile) ||
 623                (-l $headfile && readlink($headfile) =~ /^refs\/heads\//));
 624}
 625
 626sub check_export_ok {
 627        my ($dir) = @_;
 628        return (check_head_link($dir) &&
 629                (!$export_ok || -e "$dir/$export_ok") &&
 630                (!$export_auth_hook || $export_auth_hook->($dir)));
 631}
 632
 633# process alternate names for backward compatibility
 634# filter out unsupported (unknown) snapshot formats
 635sub filter_snapshot_fmts {
 636        my @fmts = @_;
 637
 638        @fmts = map {
 639                exists $known_snapshot_format_aliases{$_} ?
 640                       $known_snapshot_format_aliases{$_} : $_} @fmts;
 641        @fmts = grep {
 642                exists $known_snapshot_formats{$_} &&
 643                !$known_snapshot_formats{$_}{'disabled'}} @fmts;
 644}
 645
 646# If it is set to code reference, it is code that it is to be run once per
 647# request, allowing updating configurations that change with each request,
 648# while running other code in config file only once.
 649#
 650# Otherwise, if it is false then gitweb would process config file only once;
 651# if it is true then gitweb config would be run for each request.
 652our $per_request_config = 1;
 653
 654# read and parse gitweb config file given by its parameter.
 655# returns true on success, false on recoverable error, allowing
 656# to chain this subroutine, using first file that exists.
 657# dies on errors during parsing config file, as it is unrecoverable.
 658sub read_config_file {
 659        my $filename = shift;
 660        return unless defined $filename;
 661        # die if there are errors parsing config file
 662        if (-e $filename) {
 663                do $filename;
 664                die $@ if $@;
 665                return 1;
 666        }
 667        return;
 668}
 669
 670our ($GITWEB_CONFIG, $GITWEB_CONFIG_SYSTEM, $GITWEB_CONFIG_COMMON);
 671sub evaluate_gitweb_config {
 672        our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 673        our $GITWEB_CONFIG_SYSTEM = $ENV{'GITWEB_CONFIG_SYSTEM'} || "++GITWEB_CONFIG_SYSTEM++";
 674        our $GITWEB_CONFIG_COMMON = $ENV{'GITWEB_CONFIG_COMMON'} || "++GITWEB_CONFIG_COMMON++";
 675
 676        # Protect agains duplications of file names, to not read config twice.
 677        # Only one of $GITWEB_CONFIG and $GITWEB_CONFIG_SYSTEM is used, so
 678        # there possibility of duplication of filename there doesn't matter.
 679        $GITWEB_CONFIG = ""        if ($GITWEB_CONFIG eq $GITWEB_CONFIG_COMMON);
 680        $GITWEB_CONFIG_SYSTEM = "" if ($GITWEB_CONFIG_SYSTEM eq $GITWEB_CONFIG_COMMON);
 681
 682        # Common system-wide settings for convenience.
 683        # Those settings can be ovverriden by GITWEB_CONFIG or GITWEB_CONFIG_SYSTEM.
 684        read_config_file($GITWEB_CONFIG_COMMON);
 685
 686        # Use first config file that exists.  This means use the per-instance
 687        # GITWEB_CONFIG if exists, otherwise use GITWEB_SYSTEM_CONFIG.
 688        read_config_file($GITWEB_CONFIG) and return;
 689        read_config_file($GITWEB_CONFIG_SYSTEM);
 690}
 691
 692# Get loadavg of system, to compare against $maxload.
 693# Currently it requires '/proc/loadavg' present to get loadavg;
 694# if it is not present it returns 0, which means no load checking.
 695sub get_loadavg {
 696        if( -e '/proc/loadavg' ){
 697                open my $fd, '<', '/proc/loadavg'
 698                        or return 0;
 699                my @load = split(/\s+/, scalar <$fd>);
 700                close $fd;
 701
 702                # The first three columns measure CPU and IO utilization of the last one,
 703                # five, and 10 minute periods.  The fourth column shows the number of
 704                # currently running processes and the total number of processes in the m/n
 705                # format.  The last column displays the last process ID used.
 706                return $load[0] || 0;
 707        }
 708        # additional checks for load average should go here for things that don't export
 709        # /proc/loadavg
 710
 711        return 0;
 712}
 713
 714# version of the core git binary
 715our $git_version;
 716sub evaluate_git_version {
 717        our $git_version = qx("$GIT" --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 718        $number_of_git_cmds++;
 719}
 720
 721sub check_loadavg {
 722        if (defined $maxload && get_loadavg() > $maxload) {
 723                die_error(503, "The load average on the server is too high");
 724        }
 725}
 726
 727# ======================================================================
 728# input validation and dispatch
 729
 730# input parameters can be collected from a variety of sources (presently, CGI
 731# and PATH_INFO), so we define an %input_params hash that collects them all
 732# together during validation: this allows subsequent uses (e.g. href()) to be
 733# agnostic of the parameter origin
 734
 735our %input_params = ();
 736
 737# input parameters are stored with the long parameter name as key. This will
 738# also be used in the href subroutine to convert parameters to their CGI
 739# equivalent, and since the href() usage is the most frequent one, we store
 740# the name -> CGI key mapping here, instead of the reverse.
 741#
 742# XXX: Warning: If you touch this, check the search form for updating,
 743# too.
 744
 745our @cgi_param_mapping = (
 746        project => "p",
 747        action => "a",
 748        file_name => "f",
 749        file_parent => "fp",
 750        hash => "h",
 751        hash_parent => "hp",
 752        hash_base => "hb",
 753        hash_parent_base => "hpb",
 754        page => "pg",
 755        order => "o",
 756        searchtext => "s",
 757        searchtype => "st",
 758        snapshot_format => "sf",
 759        extra_options => "opt",
 760        search_use_regexp => "sr",
 761        ctag => "by_tag",
 762        # this must be last entry (for manipulation from JavaScript)
 763        javascript => "js"
 764);
 765our %cgi_param_mapping = @cgi_param_mapping;
 766
 767# we will also need to know the possible actions, for validation
 768our %actions = (
 769        "blame" => \&git_blame,
 770        "blame_incremental" => \&git_blame_incremental,
 771        "blame_data" => \&git_blame_data,
 772        "blobdiff" => \&git_blobdiff,
 773        "blobdiff_plain" => \&git_blobdiff_plain,
 774        "blob" => \&git_blob,
 775        "blob_plain" => \&git_blob_plain,
 776        "commitdiff" => \&git_commitdiff,
 777        "commitdiff_plain" => \&git_commitdiff_plain,
 778        "commit" => \&git_commit,
 779        "forks" => \&git_forks,
 780        "heads" => \&git_heads,
 781        "history" => \&git_history,
 782        "log" => \&git_log,
 783        "patch" => \&git_patch,
 784        "patches" => \&git_patches,
 785        "remotes" => \&git_remotes,
 786        "rss" => \&git_rss,
 787        "atom" => \&git_atom,
 788        "search" => \&git_search,
 789        "search_help" => \&git_search_help,
 790        "shortlog" => \&git_shortlog,
 791        "summary" => \&git_summary,
 792        "tag" => \&git_tag,
 793        "tags" => \&git_tags,
 794        "tree" => \&git_tree,
 795        "snapshot" => \&git_snapshot,
 796        "object" => \&git_object,
 797        # those below don't need $project
 798        "opml" => \&git_opml,
 799        "project_list" => \&git_project_list,
 800        "project_index" => \&git_project_index,
 801);
 802
 803# finally, we have the hash of allowed extra_options for the commands that
 804# allow them
 805our %allowed_options = (
 806        "--no-merges" => [ qw(rss atom log shortlog history) ],
 807);
 808
 809# fill %input_params with the CGI parameters. All values except for 'opt'
 810# should be single values, but opt can be an array. We should probably
 811# build an array of parameters that can be multi-valued, but since for the time
 812# being it's only this one, we just single it out
 813sub evaluate_query_params {
 814        our $cgi;
 815
 816        while (my ($name, $symbol) = each %cgi_param_mapping) {
 817                if ($symbol eq 'opt') {
 818                        $input_params{$name} = [ $cgi->param($symbol) ];
 819                } else {
 820                        $input_params{$name} = $cgi->param($symbol);
 821                }
 822        }
 823}
 824
 825# now read PATH_INFO and update the parameter list for missing parameters
 826sub evaluate_path_info {
 827        return if defined $input_params{'project'};
 828        return if !$path_info;
 829        $path_info =~ s,^/+,,;
 830        return if !$path_info;
 831
 832        # find which part of PATH_INFO is project
 833        my $project = $path_info;
 834        $project =~ s,/+$,,;
 835        while ($project && !check_head_link("$projectroot/$project")) {
 836                $project =~ s,/*[^/]*$,,;
 837        }
 838        return unless $project;
 839        $input_params{'project'} = $project;
 840
 841        # do not change any parameters if an action is given using the query string
 842        return if $input_params{'action'};
 843        $path_info =~ s,^\Q$project\E/*,,;
 844
 845        # next, check if we have an action
 846        my $action = $path_info;
 847        $action =~ s,/.*$,,;
 848        if (exists $actions{$action}) {
 849                $path_info =~ s,^$action/*,,;
 850                $input_params{'action'} = $action;
 851        }
 852
 853        # list of actions that want hash_base instead of hash, but can have no
 854        # pathname (f) parameter
 855        my @wants_base = (
 856                'tree',
 857                'history',
 858        );
 859
 860        # we want to catch, among others
 861        # [$hash_parent_base[:$file_parent]..]$hash_parent[:$file_name]
 862        my ($parentrefname, $parentpathname, $refname, $pathname) =
 863                ($path_info =~ /^(?:(.+?)(?::(.+))?\.\.)?([^:]+?)?(?::(.+))?$/);
 864
 865        # first, analyze the 'current' part
 866        if (defined $pathname) {
 867                # we got "branch:filename" or "branch:dir/"
 868                # we could use git_get_type(branch:pathname), but:
 869                # - it needs $git_dir
 870                # - it does a git() call
 871                # - the convention of terminating directories with a slash
 872                #   makes it superfluous
 873                # - embedding the action in the PATH_INFO would make it even
 874                #   more superfluous
 875                $pathname =~ s,^/+,,;
 876                if (!$pathname || substr($pathname, -1) eq "/") {
 877                        $input_params{'action'} ||= "tree";
 878                        $pathname =~ s,/$,,;
 879                } else {
 880                        # the default action depends on whether we had parent info
 881                        # or not
 882                        if ($parentrefname) {
 883                                $input_params{'action'} ||= "blobdiff_plain";
 884                        } else {
 885                                $input_params{'action'} ||= "blob_plain";
 886                        }
 887                }
 888                $input_params{'hash_base'} ||= $refname;
 889                $input_params{'file_name'} ||= $pathname;
 890        } elsif (defined $refname) {
 891                # we got "branch". In this case we have to choose if we have to
 892                # set hash or hash_base.
 893                #
 894                # Most of the actions without a pathname only want hash to be
 895                # set, except for the ones specified in @wants_base that want
 896                # hash_base instead. It should also be noted that hand-crafted
 897                # links having 'history' as an action and no pathname or hash
 898                # set will fail, but that happens regardless of PATH_INFO.
 899                if (defined $parentrefname) {
 900                        # if there is parent let the default be 'shortlog' action
 901                        # (for http://git.example.com/repo.git/A..B links); if there
 902                        # is no parent, dispatch will detect type of object and set
 903                        # action appropriately if required (if action is not set)
 904                        $input_params{'action'} ||= "shortlog";
 905                }
 906                if ($input_params{'action'} &&
 907                    grep { $_ eq $input_params{'action'} } @wants_base) {
 908                        $input_params{'hash_base'} ||= $refname;
 909                } else {
 910                        $input_params{'hash'} ||= $refname;
 911                }
 912        }
 913
 914        # next, handle the 'parent' part, if present
 915        if (defined $parentrefname) {
 916                # a missing pathspec defaults to the 'current' filename, allowing e.g.
 917                # someproject/blobdiff/oldrev..newrev:/filename
 918                if ($parentpathname) {
 919                        $parentpathname =~ s,^/+,,;
 920                        $parentpathname =~ s,/$,,;
 921                        $input_params{'file_parent'} ||= $parentpathname;
 922                } else {
 923                        $input_params{'file_parent'} ||= $input_params{'file_name'};
 924                }
 925                # we assume that hash_parent_base is wanted if a path was specified,
 926                # or if the action wants hash_base instead of hash
 927                if (defined $input_params{'file_parent'} ||
 928                        grep { $_ eq $input_params{'action'} } @wants_base) {
 929                        $input_params{'hash_parent_base'} ||= $parentrefname;
 930                } else {
 931                        $input_params{'hash_parent'} ||= $parentrefname;
 932                }
 933        }
 934
 935        # for the snapshot action, we allow URLs in the form
 936        # $project/snapshot/$hash.ext
 937        # where .ext determines the snapshot and gets removed from the
 938        # passed $refname to provide the $hash.
 939        #
 940        # To be able to tell that $refname includes the format extension, we
 941        # require the following two conditions to be satisfied:
 942        # - the hash input parameter MUST have been set from the $refname part
 943        #   of the URL (i.e. they must be equal)
 944        # - the snapshot format MUST NOT have been defined already (e.g. from
 945        #   CGI parameter sf)
 946        # It's also useless to try any matching unless $refname has a dot,
 947        # so we check for that too
 948        if (defined $input_params{'action'} &&
 949                $input_params{'action'} eq 'snapshot' &&
 950                defined $refname && index($refname, '.') != -1 &&
 951                $refname eq $input_params{'hash'} &&
 952                !defined $input_params{'snapshot_format'}) {
 953                # We loop over the known snapshot formats, checking for
 954                # extensions. Allowed extensions are both the defined suffix
 955                # (which includes the initial dot already) and the snapshot
 956                # format key itself, with a prepended dot
 957                while (my ($fmt, $opt) = each %known_snapshot_formats) {
 958                        my $hash = $refname;
 959                        unless ($hash =~ s/(\Q$opt->{'suffix'}\E|\Q.$fmt\E)$//) {
 960                                next;
 961                        }
 962                        my $sfx = $1;
 963                        # a valid suffix was found, so set the snapshot format
 964                        # and reset the hash parameter
 965                        $input_params{'snapshot_format'} = $fmt;
 966                        $input_params{'hash'} = $hash;
 967                        # we also set the format suffix to the one requested
 968                        # in the URL: this way a request for e.g. .tgz returns
 969                        # a .tgz instead of a .tar.gz
 970                        $known_snapshot_formats{$fmt}{'suffix'} = $sfx;
 971                        last;
 972                }
 973        }
 974}
 975
 976our ($action, $project, $file_name, $file_parent, $hash, $hash_parent, $hash_base,
 977     $hash_parent_base, @extra_options, $page, $searchtype, $search_use_regexp,
 978     $searchtext, $search_regexp);
 979sub evaluate_and_validate_params {
 980        our $action = $input_params{'action'};
 981        if (defined $action) {
 982                if (!validate_action($action)) {
 983                        die_error(400, "Invalid action parameter");
 984                }
 985        }
 986
 987        # parameters which are pathnames
 988        our $project = $input_params{'project'};
 989        if (defined $project) {
 990                if (!validate_project($project)) {
 991                        undef $project;
 992                        die_error(404, "No such project");
 993                }
 994        }
 995
 996        our $file_name = $input_params{'file_name'};
 997        if (defined $file_name) {
 998                if (!validate_pathname($file_name)) {
 999                        die_error(400, "Invalid file parameter");
1000                }
1001        }
1002
1003        our $file_parent = $input_params{'file_parent'};
1004        if (defined $file_parent) {
1005                if (!validate_pathname($file_parent)) {
1006                        die_error(400, "Invalid file parent parameter");
1007                }
1008        }
1009
1010        # parameters which are refnames
1011        our $hash = $input_params{'hash'};
1012        if (defined $hash) {
1013                if (!validate_refname($hash)) {
1014                        die_error(400, "Invalid hash parameter");
1015                }
1016        }
1017
1018        our $hash_parent = $input_params{'hash_parent'};
1019        if (defined $hash_parent) {
1020                if (!validate_refname($hash_parent)) {
1021                        die_error(400, "Invalid hash parent parameter");
1022                }
1023        }
1024
1025        our $hash_base = $input_params{'hash_base'};
1026        if (defined $hash_base) {
1027                if (!validate_refname($hash_base)) {
1028                        die_error(400, "Invalid hash base parameter");
1029                }
1030        }
1031
1032        our @extra_options = @{$input_params{'extra_options'}};
1033        # @extra_options is always defined, since it can only be (currently) set from
1034        # CGI, and $cgi->param() returns the empty array in array context if the param
1035        # is not set
1036        foreach my $opt (@extra_options) {
1037                if (not exists $allowed_options{$opt}) {
1038                        die_error(400, "Invalid option parameter");
1039                }
1040                if (not grep(/^$action$/, @{$allowed_options{$opt}})) {
1041                        die_error(400, "Invalid option parameter for this action");
1042                }
1043        }
1044
1045        our $hash_parent_base = $input_params{'hash_parent_base'};
1046        if (defined $hash_parent_base) {
1047                if (!validate_refname($hash_parent_base)) {
1048                        die_error(400, "Invalid hash parent base parameter");
1049                }
1050        }
1051
1052        # other parameters
1053        our $page = $input_params{'page'};
1054        if (defined $page) {
1055                if ($page =~ m/[^0-9]/) {
1056                        die_error(400, "Invalid page parameter");
1057                }
1058        }
1059
1060        our $searchtype = $input_params{'searchtype'};
1061        if (defined $searchtype) {
1062                if ($searchtype =~ m/[^a-z]/) {
1063                        die_error(400, "Invalid searchtype parameter");
1064                }
1065        }
1066
1067        our $search_use_regexp = $input_params{'search_use_regexp'};
1068
1069        our $searchtext = $input_params{'searchtext'};
1070        our $search_regexp;
1071        if (defined $searchtext) {
1072                if (length($searchtext) < 2) {
1073                        die_error(403, "At least two characters are required for search parameter");
1074                }
1075                $search_regexp = $search_use_regexp ? $searchtext : quotemeta $searchtext;
1076        }
1077}
1078
1079# path to the current git repository
1080our $git_dir;
1081sub evaluate_git_dir {
1082        our $git_dir = "$projectroot/$project" if $project;
1083}
1084
1085our (@snapshot_fmts, $git_avatar);
1086sub configure_gitweb_features {
1087        # list of supported snapshot formats
1088        our @snapshot_fmts = gitweb_get_feature('snapshot');
1089        @snapshot_fmts = filter_snapshot_fmts(@snapshot_fmts);
1090
1091        # check that the avatar feature is set to a known provider name,
1092        # and for each provider check if the dependencies are satisfied.
1093        # if the provider name is invalid or the dependencies are not met,
1094        # reset $git_avatar to the empty string.
1095        our ($git_avatar) = gitweb_get_feature('avatar');
1096        if ($git_avatar eq 'gravatar') {
1097                $git_avatar = '' unless (eval { require Digest::MD5; 1; });
1098        } elsif ($git_avatar eq 'picon') {
1099                # no dependencies
1100        } else {
1101                $git_avatar = '';
1102        }
1103}
1104
1105# custom error handler: 'die <message>' is Internal Server Error
1106sub handle_errors_html {
1107        my $msg = shift; # it is already HTML escaped
1108
1109        # to avoid infinite loop where error occurs in die_error,
1110        # change handler to default handler, disabling handle_errors_html
1111        set_message("Error occured when inside die_error:\n$msg");
1112
1113        # you cannot jump out of die_error when called as error handler;
1114        # the subroutine set via CGI::Carp::set_message is called _after_
1115        # HTTP headers are already written, so it cannot write them itself
1116        die_error(undef, undef, $msg, -error_handler => 1, -no_http_header => 1);
1117}
1118set_message(\&handle_errors_html);
1119
1120# dispatch
1121sub dispatch {
1122        if (!defined $action) {
1123                if (defined $hash) {
1124                        $action = git_get_type($hash);
1125                } elsif (defined $hash_base && defined $file_name) {
1126                        $action = git_get_type("$hash_base:$file_name");
1127                } elsif (defined $project) {
1128                        $action = 'summary';
1129                } else {
1130                        $action = 'project_list';
1131                }
1132        }
1133        if (!defined($actions{$action})) {
1134                die_error(400, "Unknown action");
1135        }
1136        if ($action !~ m/^(?:opml|project_list|project_index)$/ &&
1137            !$project) {
1138                die_error(400, "Project needed");
1139        }
1140        $actions{$action}->();
1141}
1142
1143sub reset_timer {
1144        our $t0 = [ gettimeofday() ]
1145                if defined $t0;
1146        our $number_of_git_cmds = 0;
1147}
1148
1149our $first_request = 1;
1150sub run_request {
1151        reset_timer();
1152
1153        evaluate_uri();
1154        if ($first_request) {
1155                evaluate_gitweb_config();
1156                evaluate_git_version();
1157        }
1158        if ($per_request_config) {
1159                if (ref($per_request_config) eq 'CODE') {
1160                        $per_request_config->();
1161                } elsif (!$first_request) {
1162                        evaluate_gitweb_config();
1163                }
1164        }
1165        check_loadavg();
1166
1167        # $projectroot and $projects_list might be set in gitweb config file
1168        $projects_list ||= $projectroot;
1169
1170        evaluate_query_params();
1171        evaluate_path_info();
1172        evaluate_and_validate_params();
1173        evaluate_git_dir();
1174
1175        configure_gitweb_features();
1176
1177        dispatch();
1178}
1179
1180our $is_last_request = sub { 1 };
1181our ($pre_dispatch_hook, $post_dispatch_hook, $pre_listen_hook);
1182our $CGI = 'CGI';
1183our $cgi;
1184sub configure_as_fcgi {
1185        require CGI::Fast;
1186        our $CGI = 'CGI::Fast';
1187
1188        my $request_number = 0;
1189        # let each child service 100 requests
1190        our $is_last_request = sub { ++$request_number > 100 };
1191}
1192sub evaluate_argv {
1193        my $script_name = $ENV{'SCRIPT_NAME'} || $ENV{'SCRIPT_FILENAME'} || __FILE__;
1194        configure_as_fcgi()
1195                if $script_name =~ /\.fcgi$/;
1196
1197        return unless (@ARGV);
1198
1199        require Getopt::Long;
1200        Getopt::Long::GetOptions(
1201                'fastcgi|fcgi|f' => \&configure_as_fcgi,
1202                'nproc|n=i' => sub {
1203                        my ($arg, $val) = @_;
1204                        return unless eval { require FCGI::ProcManager; 1; };
1205                        my $proc_manager = FCGI::ProcManager->new({
1206                                n_processes => $val,
1207                        });
1208                        our $pre_listen_hook    = sub { $proc_manager->pm_manage()        };
1209                        our $pre_dispatch_hook  = sub { $proc_manager->pm_pre_dispatch()  };
1210                        our $post_dispatch_hook = sub { $proc_manager->pm_post_dispatch() };
1211                },
1212        );
1213}
1214
1215sub run {
1216        evaluate_argv();
1217
1218        $first_request = 1;
1219        $pre_listen_hook->()
1220                if $pre_listen_hook;
1221
1222 REQUEST:
1223        while ($cgi = $CGI->new()) {
1224                $pre_dispatch_hook->()
1225                        if $pre_dispatch_hook;
1226
1227                run_request();
1228
1229                $post_dispatch_hook->()
1230                        if $post_dispatch_hook;
1231                $first_request = 0;
1232
1233                last REQUEST if ($is_last_request->());
1234        }
1235
1236 DONE_GITWEB:
1237        1;
1238}
1239
1240run();
1241
1242if (defined caller) {
1243        # wrapped in a subroutine processing requests,
1244        # e.g. mod_perl with ModPerl::Registry, or PSGI with Plack::App::WrapCGI
1245        return;
1246} else {
1247        # pure CGI script, serving single request
1248        exit;
1249}
1250
1251## ======================================================================
1252## action links
1253
1254# possible values of extra options
1255# -full => 0|1      - use absolute/full URL ($my_uri/$my_url as base)
1256# -replay => 1      - start from a current view (replay with modifications)
1257# -path_info => 0|1 - don't use/use path_info URL (if possible)
1258# -anchor => ANCHOR - add #ANCHOR to end of URL, implies -replay if used alone
1259sub href {
1260        my %params = @_;
1261        # default is to use -absolute url() i.e. $my_uri
1262        my $href = $params{-full} ? $my_url : $my_uri;
1263
1264        # implicit -replay, must be first of implicit params
1265        $params{-replay} = 1 if (keys %params == 1 && $params{-anchor});
1266
1267        $params{'project'} = $project unless exists $params{'project'};
1268
1269        if ($params{-replay}) {
1270                while (my ($name, $symbol) = each %cgi_param_mapping) {
1271                        if (!exists $params{$name}) {
1272                                $params{$name} = $input_params{$name};
1273                        }
1274                }
1275        }
1276
1277        my $use_pathinfo = gitweb_check_feature('pathinfo');
1278        if (defined $params{'project'} &&
1279            (exists $params{-path_info} ? $params{-path_info} : $use_pathinfo)) {
1280                # try to put as many parameters as possible in PATH_INFO:
1281                #   - project name
1282                #   - action
1283                #   - hash_parent or hash_parent_base:/file_parent
1284                #   - hash or hash_base:/filename
1285                #   - the snapshot_format as an appropriate suffix
1286
1287                # When the script is the root DirectoryIndex for the domain,
1288                # $href here would be something like http://gitweb.example.com/
1289                # Thus, we strip any trailing / from $href, to spare us double
1290                # slashes in the final URL
1291                $href =~ s,/$,,;
1292
1293                # Then add the project name, if present
1294                $href .= "/".esc_path_info($params{'project'});
1295                delete $params{'project'};
1296
1297                # since we destructively absorb parameters, we keep this
1298                # boolean that remembers if we're handling a snapshot
1299                my $is_snapshot = $params{'action'} eq 'snapshot';
1300
1301                # Summary just uses the project path URL, any other action is
1302                # added to the URL
1303                if (defined $params{'action'}) {
1304                        $href .= "/".esc_path_info($params{'action'})
1305                                unless $params{'action'} eq 'summary';
1306                        delete $params{'action'};
1307                }
1308
1309                # Next, we put hash_parent_base:/file_parent..hash_base:/file_name,
1310                # stripping nonexistent or useless pieces
1311                $href .= "/" if ($params{'hash_base'} || $params{'hash_parent_base'}
1312                        || $params{'hash_parent'} || $params{'hash'});
1313                if (defined $params{'hash_base'}) {
1314                        if (defined $params{'hash_parent_base'}) {
1315                                $href .= esc_path_info($params{'hash_parent_base'});
1316                                # skip the file_parent if it's the same as the file_name
1317                                if (defined $params{'file_parent'}) {
1318                                        if (defined $params{'file_name'} && $params{'file_parent'} eq $params{'file_name'}) {
1319                                                delete $params{'file_parent'};
1320                                        } elsif ($params{'file_parent'} !~ /\.\./) {
1321                                                $href .= ":/".esc_path_info($params{'file_parent'});
1322                                                delete $params{'file_parent'};
1323                                        }
1324                                }
1325                                $href .= "..";
1326                                delete $params{'hash_parent'};
1327                                delete $params{'hash_parent_base'};
1328                        } elsif (defined $params{'hash_parent'}) {
1329                                $href .= esc_path_info($params{'hash_parent'}). "..";
1330                                delete $params{'hash_parent'};
1331                        }
1332
1333                        $href .= esc_path_info($params{'hash_base'});
1334                        if (defined $params{'file_name'} && $params{'file_name'} !~ /\.\./) {
1335                                $href .= ":/".esc_path_info($params{'file_name'});
1336                                delete $params{'file_name'};
1337                        }
1338                        delete $params{'hash'};
1339                        delete $params{'hash_base'};
1340                } elsif (defined $params{'hash'}) {
1341                        $href .= esc_path_info($params{'hash'});
1342                        delete $params{'hash'};
1343                }
1344
1345                # If the action was a snapshot, we can absorb the
1346                # snapshot_format parameter too
1347                if ($is_snapshot) {
1348                        my $fmt = $params{'snapshot_format'};
1349                        # snapshot_format should always be defined when href()
1350                        # is called, but just in case some code forgets, we
1351                        # fall back to the default
1352                        $fmt ||= $snapshot_fmts[0];
1353                        $href .= $known_snapshot_formats{$fmt}{'suffix'};
1354                        delete $params{'snapshot_format'};
1355                }
1356        }
1357
1358        # now encode the parameters explicitly
1359        my @result = ();
1360        for (my $i = 0; $i < @cgi_param_mapping; $i += 2) {
1361                my ($name, $symbol) = ($cgi_param_mapping[$i], $cgi_param_mapping[$i+1]);
1362                if (defined $params{$name}) {
1363                        if (ref($params{$name}) eq "ARRAY") {
1364                                foreach my $par (@{$params{$name}}) {
1365                                        push @result, $symbol . "=" . esc_param($par);
1366                                }
1367                        } else {
1368                                push @result, $symbol . "=" . esc_param($params{$name});
1369                        }
1370                }
1371        }
1372        $href .= "?" . join(';', @result) if scalar @result;
1373
1374        # final transformation: trailing spaces must be escaped (URI-encoded)
1375        $href =~ s/(\s+)$/CGI::escape($1)/e;
1376
1377        if ($params{-anchor}) {
1378                $href .= "#".esc_param($params{-anchor});
1379        }
1380
1381        return $href;
1382}
1383
1384
1385## ======================================================================
1386## validation, quoting/unquoting and escaping
1387
1388sub validate_action {
1389        my $input = shift || return undef;
1390        return undef unless exists $actions{$input};
1391        return $input;
1392}
1393
1394sub validate_project {
1395        my $input = shift || return undef;
1396        if (!validate_pathname($input) ||
1397                !(-d "$projectroot/$input") ||
1398                !check_export_ok("$projectroot/$input") ||
1399                ($strict_export && !project_in_list($input))) {
1400                return undef;
1401        } else {
1402                return $input;
1403        }
1404}
1405
1406sub validate_pathname {
1407        my $input = shift || return undef;
1408
1409        # no '.' or '..' as elements of path, i.e. no '.' nor '..'
1410        # at the beginning, at the end, and between slashes.
1411        # also this catches doubled slashes
1412        if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
1413                return undef;
1414        }
1415        # no null characters
1416        if ($input =~ m!\0!) {
1417                return undef;
1418        }
1419        return $input;
1420}
1421
1422sub validate_refname {
1423        my $input = shift || return undef;
1424
1425        # textual hashes are O.K.
1426        if ($input =~ m/^[0-9a-fA-F]{40}$/) {
1427                return $input;
1428        }
1429        # it must be correct pathname
1430        $input = validate_pathname($input)
1431                or return undef;
1432        # restrictions on ref name according to git-check-ref-format
1433        if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
1434                return undef;
1435        }
1436        return $input;
1437}
1438
1439# decode sequences of octets in utf8 into Perl's internal form,
1440# which is utf-8 with utf8 flag set if needed.  gitweb writes out
1441# in utf-8 thanks to "binmode STDOUT, ':utf8'" at beginning
1442sub to_utf8 {
1443        my $str = shift;
1444        return undef unless defined $str;
1445        if (utf8::valid($str)) {
1446                utf8::decode($str);
1447                return $str;
1448        } else {
1449                return decode($fallback_encoding, $str, Encode::FB_DEFAULT);
1450        }
1451}
1452
1453# quote unsafe chars, but keep the slash, even when it's not
1454# correct, but quoted slashes look too horrible in bookmarks
1455sub esc_param {
1456        my $str = shift;
1457        return undef unless defined $str;
1458        $str =~ s/([^A-Za-z0-9\-_.~()\/:@ ]+)/CGI::escape($1)/eg;
1459        $str =~ s/ /\+/g;
1460        return $str;
1461}
1462
1463# the quoting rules for path_info fragment are slightly different
1464sub esc_path_info {
1465        my $str = shift;
1466        return undef unless defined $str;
1467
1468        # path_info doesn't treat '+' as space (specially), but '?' must be escaped
1469        $str =~ s/([^A-Za-z0-9\-_.~();\/;:@&= +]+)/CGI::escape($1)/eg;
1470
1471        return $str;
1472}
1473
1474# quote unsafe chars in whole URL, so some characters cannot be quoted
1475sub esc_url {
1476        my $str = shift;
1477        return undef unless defined $str;
1478        $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&= ]+)/CGI::escape($1)/eg;
1479        $str =~ s/ /\+/g;
1480        return $str;
1481}
1482
1483# quote unsafe characters in HTML attributes
1484sub esc_attr {
1485
1486        # for XHTML conformance escaping '"' to '&quot;' is not enough
1487        return esc_html(@_);
1488}
1489
1490# replace invalid utf8 character with SUBSTITUTION sequence
1491sub esc_html {
1492        my $str = shift;
1493        my %opts = @_;
1494
1495        return undef unless defined $str;
1496
1497        $str = to_utf8($str);
1498        $str = $cgi->escapeHTML($str);
1499        if ($opts{'-nbsp'}) {
1500                $str =~ s/ /&nbsp;/g;
1501        }
1502        $str =~ s|([[:cntrl:]])|(($1 ne "\t") ? quot_cec($1) : $1)|eg;
1503        return $str;
1504}
1505
1506# quote control characters and escape filename to HTML
1507sub esc_path {
1508        my $str = shift;
1509        my %opts = @_;
1510
1511        return undef unless defined $str;
1512
1513        $str = to_utf8($str);
1514        $str = $cgi->escapeHTML($str);
1515        if ($opts{'-nbsp'}) {
1516                $str =~ s/ /&nbsp;/g;
1517        }
1518        $str =~ s|([[:cntrl:]])|quot_cec($1)|eg;
1519        return $str;
1520}
1521
1522# Sanitize for use in XHTML + application/xml+xhtm (valid XML 1.0)
1523sub sanitize {
1524        my $str = shift;
1525
1526        return undef unless defined $str;
1527
1528        $str = to_utf8($str);
1529        $str =~ s|([[:cntrl:]])|($1 =~ /[\t\n\r]/ ? $1 : quot_cec($1))|eg;
1530        return $str;
1531}
1532
1533# Make control characters "printable", using character escape codes (CEC)
1534sub quot_cec {
1535        my $cntrl = shift;
1536        my %opts = @_;
1537        my %es = ( # character escape codes, aka escape sequences
1538                "\t" => '\t',   # tab            (HT)
1539                "\n" => '\n',   # line feed      (LF)
1540                "\r" => '\r',   # carrige return (CR)
1541                "\f" => '\f',   # form feed      (FF)
1542                "\b" => '\b',   # backspace      (BS)
1543                "\a" => '\a',   # alarm (bell)   (BEL)
1544                "\e" => '\e',   # escape         (ESC)
1545                "\013" => '\v', # vertical tab   (VT)
1546                "\000" => '\0', # nul character  (NUL)
1547        );
1548        my $chr = ( (exists $es{$cntrl})
1549                    ? $es{$cntrl}
1550                    : sprintf('\%2x', ord($cntrl)) );
1551        if ($opts{-nohtml}) {
1552                return $chr;
1553        } else {
1554                return "<span class=\"cntrl\">$chr</span>";
1555        }
1556}
1557
1558# Alternatively use unicode control pictures codepoints,
1559# Unicode "printable representation" (PR)
1560sub quot_upr {
1561        my $cntrl = shift;
1562        my %opts = @_;
1563
1564        my $chr = sprintf('&#%04d;', 0x2400+ord($cntrl));
1565        if ($opts{-nohtml}) {
1566                return $chr;
1567        } else {
1568                return "<span class=\"cntrl\">$chr</span>";
1569        }
1570}
1571
1572# git may return quoted and escaped filenames
1573sub unquote {
1574        my $str = shift;
1575
1576        sub unq {
1577                my $seq = shift;
1578                my %es = ( # character escape codes, aka escape sequences
1579                        't' => "\t",   # tab            (HT, TAB)
1580                        'n' => "\n",   # newline        (NL)
1581                        'r' => "\r",   # return         (CR)
1582                        'f' => "\f",   # form feed      (FF)
1583                        'b' => "\b",   # backspace      (BS)
1584                        'a' => "\a",   # alarm (bell)   (BEL)
1585                        'e' => "\e",   # escape         (ESC)
1586                        'v' => "\013", # vertical tab   (VT)
1587                );
1588
1589                if ($seq =~ m/^[0-7]{1,3}$/) {
1590                        # octal char sequence
1591                        return chr(oct($seq));
1592                } elsif (exists $es{$seq}) {
1593                        # C escape sequence, aka character escape code
1594                        return $es{$seq};
1595                }
1596                # quoted ordinary character
1597                return $seq;
1598        }
1599
1600        if ($str =~ m/^"(.*)"$/) {
1601                # needs unquoting
1602                $str = $1;
1603                $str =~ s/\\([^0-7]|[0-7]{1,3})/unq($1)/eg;
1604        }
1605        return $str;
1606}
1607
1608# escape tabs (convert tabs to spaces)
1609sub untabify {
1610        my $line = shift;
1611
1612        while ((my $pos = index($line, "\t")) != -1) {
1613                if (my $count = (8 - ($pos % 8))) {
1614                        my $spaces = ' ' x $count;
1615                        $line =~ s/\t/$spaces/;
1616                }
1617        }
1618
1619        return $line;
1620}
1621
1622sub project_in_list {
1623        my $project = shift;
1624        my @list = git_get_projects_list();
1625        return @list && scalar(grep { $_->{'path'} eq $project } @list);
1626}
1627
1628## ----------------------------------------------------------------------
1629## HTML aware string manipulation
1630
1631# Try to chop given string on a word boundary between position
1632# $len and $len+$add_len. If there is no word boundary there,
1633# chop at $len+$add_len. Do not chop if chopped part plus ellipsis
1634# (marking chopped part) would be longer than given string.
1635sub chop_str {
1636        my $str = shift;
1637        my $len = shift;
1638        my $add_len = shift || 10;
1639        my $where = shift || 'right'; # 'left' | 'center' | 'right'
1640
1641        # Make sure perl knows it is utf8 encoded so we don't
1642        # cut in the middle of a utf8 multibyte char.
1643        $str = to_utf8($str);
1644
1645        # allow only $len chars, but don't cut a word if it would fit in $add_len
1646        # if it doesn't fit, cut it if it's still longer than the dots we would add
1647        # remove chopped character entities entirely
1648
1649        # when chopping in the middle, distribute $len into left and right part
1650        # return early if chopping wouldn't make string shorter
1651        if ($where eq 'center') {
1652                return $str if ($len + 5 >= length($str)); # filler is length 5
1653                $len = int($len/2);
1654        } else {
1655                return $str if ($len + 4 >= length($str)); # filler is length 4
1656        }
1657
1658        # regexps: ending and beginning with word part up to $add_len
1659        my $endre = qr/.{$len}\w{0,$add_len}/;
1660        my $begre = qr/\w{0,$add_len}.{$len}/;
1661
1662        if ($where eq 'left') {
1663                $str =~ m/^(.*?)($begre)$/;
1664                my ($lead, $body) = ($1, $2);
1665                if (length($lead) > 4) {
1666                        $lead = " ...";
1667                }
1668                return "$lead$body";
1669
1670        } elsif ($where eq 'center') {
1671                $str =~ m/^($endre)(.*)$/;
1672                my ($left, $str)  = ($1, $2);
1673                $str =~ m/^(.*?)($begre)$/;
1674                my ($mid, $right) = ($1, $2);
1675                if (length($mid) > 5) {
1676                        $mid = " ... ";
1677                }
1678                return "$left$mid$right";
1679
1680        } else {
1681                $str =~ m/^($endre)(.*)$/;
1682                my $body = $1;
1683                my $tail = $2;
1684                if (length($tail) > 4) {
1685                        $tail = "... ";
1686                }
1687                return "$body$tail";
1688        }
1689}
1690
1691# takes the same arguments as chop_str, but also wraps a <span> around the
1692# result with a title attribute if it does get chopped. Additionally, the
1693# string is HTML-escaped.
1694sub chop_and_escape_str {
1695        my ($str) = @_;
1696
1697        my $chopped = chop_str(@_);
1698        if ($chopped eq $str) {
1699                return esc_html($chopped);
1700        } else {
1701                $str =~ s/[[:cntrl:]]/?/g;
1702                return $cgi->span({-title=>$str}, esc_html($chopped));
1703        }
1704}
1705
1706## ----------------------------------------------------------------------
1707## functions returning short strings
1708
1709# CSS class for given age value (in seconds)
1710sub age_class {
1711        my $age = shift;
1712
1713        if (!defined $age) {
1714                return "noage";
1715        } elsif ($age < 60*60*2) {
1716                return "age0";
1717        } elsif ($age < 60*60*24*2) {
1718                return "age1";
1719        } else {
1720                return "age2";
1721        }
1722}
1723
1724# convert age in seconds to "nn units ago" string
1725sub age_string {
1726        my $age = shift;
1727        my $age_str;
1728
1729        if ($age > 60*60*24*365*2) {
1730                $age_str = (int $age/60/60/24/365);
1731                $age_str .= " years ago";
1732        } elsif ($age > 60*60*24*(365/12)*2) {
1733                $age_str = int $age/60/60/24/(365/12);
1734                $age_str .= " months ago";
1735        } elsif ($age > 60*60*24*7*2) {
1736                $age_str = int $age/60/60/24/7;
1737                $age_str .= " weeks ago";
1738        } elsif ($age > 60*60*24*2) {
1739                $age_str = int $age/60/60/24;
1740                $age_str .= " days ago";
1741        } elsif ($age > 60*60*2) {
1742                $age_str = int $age/60/60;
1743                $age_str .= " hours ago";
1744        } elsif ($age > 60*2) {
1745                $age_str = int $age/60;
1746                $age_str .= " min ago";
1747        } elsif ($age > 2) {
1748                $age_str = int $age;
1749                $age_str .= " sec ago";
1750        } else {
1751                $age_str .= " right now";
1752        }
1753        return $age_str;
1754}
1755
1756use constant {
1757        S_IFINVALID => 0030000,
1758        S_IFGITLINK => 0160000,
1759};
1760
1761# submodule/subproject, a commit object reference
1762sub S_ISGITLINK {
1763        my $mode = shift;
1764
1765        return (($mode & S_IFMT) == S_IFGITLINK)
1766}
1767
1768# convert file mode in octal to symbolic file mode string
1769sub mode_str {
1770        my $mode = oct shift;
1771
1772        if (S_ISGITLINK($mode)) {
1773                return 'm---------';
1774        } elsif (S_ISDIR($mode & S_IFMT)) {
1775                return 'drwxr-xr-x';
1776        } elsif (S_ISLNK($mode)) {
1777                return 'lrwxrwxrwx';
1778        } elsif (S_ISREG($mode)) {
1779                # git cares only about the executable bit
1780                if ($mode & S_IXUSR) {
1781                        return '-rwxr-xr-x';
1782                } else {
1783                        return '-rw-r--r--';
1784                };
1785        } else {
1786                return '----------';
1787        }
1788}
1789
1790# convert file mode in octal to file type string
1791sub file_type {
1792        my $mode = shift;
1793
1794        if ($mode !~ m/^[0-7]+$/) {
1795                return $mode;
1796        } else {
1797                $mode = oct $mode;
1798        }
1799
1800        if (S_ISGITLINK($mode)) {
1801                return "submodule";
1802        } elsif (S_ISDIR($mode & S_IFMT)) {
1803                return "directory";
1804        } elsif (S_ISLNK($mode)) {
1805                return "symlink";
1806        } elsif (S_ISREG($mode)) {
1807                return "file";
1808        } else {
1809                return "unknown";
1810        }
1811}
1812
1813# convert file mode in octal to file type description string
1814sub file_type_long {
1815        my $mode = shift;
1816
1817        if ($mode !~ m/^[0-7]+$/) {
1818                return $mode;
1819        } else {
1820                $mode = oct $mode;
1821        }
1822
1823        if (S_ISGITLINK($mode)) {
1824                return "submodule";
1825        } elsif (S_ISDIR($mode & S_IFMT)) {
1826                return "directory";
1827        } elsif (S_ISLNK($mode)) {
1828                return "symlink";
1829        } elsif (S_ISREG($mode)) {
1830                if ($mode & S_IXUSR) {
1831                        return "executable";
1832                } else {
1833                        return "file";
1834                };
1835        } else {
1836                return "unknown";
1837        }
1838}
1839
1840
1841## ----------------------------------------------------------------------
1842## functions returning short HTML fragments, or transforming HTML fragments
1843## which don't belong to other sections
1844
1845# format line of commit message.
1846sub format_log_line_html {
1847        my $line = shift;
1848
1849        $line = esc_html($line, -nbsp=>1);
1850        $line =~ s{\b([0-9a-fA-F]{8,40})\b}{
1851                $cgi->a({-href => href(action=>"object", hash=>$1),
1852                                        -class => "text"}, $1);
1853        }eg;
1854
1855        return $line;
1856}
1857
1858# format marker of refs pointing to given object
1859
1860# the destination action is chosen based on object type and current context:
1861# - for annotated tags, we choose the tag view unless it's the current view
1862#   already, in which case we go to shortlog view
1863# - for other refs, we keep the current view if we're in history, shortlog or
1864#   log view, and select shortlog otherwise
1865sub format_ref_marker {
1866        my ($refs, $id) = @_;
1867        my $markers = '';
1868
1869        if (defined $refs->{$id}) {
1870                foreach my $ref (@{$refs->{$id}}) {
1871                        # this code exploits the fact that non-lightweight tags are the
1872                        # only indirect objects, and that they are the only objects for which
1873                        # we want to use tag instead of shortlog as action
1874                        my ($type, $name) = qw();
1875                        my $indirect = ($ref =~ s/\^\{\}$//);
1876                        # e.g. tags/v2.6.11 or heads/next
1877                        if ($ref =~ m!^(.*?)s?/(.*)$!) {
1878                                $type = $1;
1879                                $name = $2;
1880                        } else {
1881                                $type = "ref";
1882                                $name = $ref;
1883                        }
1884
1885                        my $class = $type;
1886                        $class .= " indirect" if $indirect;
1887
1888                        my $dest_action = "shortlog";
1889
1890                        if ($indirect) {
1891                                $dest_action = "tag" unless $action eq "tag";
1892                        } elsif ($action =~ /^(history|(short)?log)$/) {
1893                                $dest_action = $action;
1894                        }
1895
1896                        my $dest = "";
1897                        $dest .= "refs/" unless $ref =~ m!^refs/!;
1898                        $dest .= $ref;
1899
1900                        my $link = $cgi->a({
1901                                -href => href(
1902                                        action=>$dest_action,
1903                                        hash=>$dest
1904                                )}, $name);
1905
1906                        $markers .= " <span class=\"".esc_attr($class)."\" title=\"".esc_attr($ref)."\">" .
1907                                $link . "</span>";
1908                }
1909        }
1910
1911        if ($markers) {
1912                return ' <span class="refs">'. $markers . '</span>';
1913        } else {
1914                return "";
1915        }
1916}
1917
1918# format, perhaps shortened and with markers, title line
1919sub format_subject_html {
1920        my ($long, $short, $href, $extra) = @_;
1921        $extra = '' unless defined($extra);
1922
1923        if (length($short) < length($long)) {
1924                $long =~ s/[[:cntrl:]]/?/g;
1925                return $cgi->a({-href => $href, -class => "list subject",
1926                                -title => to_utf8($long)},
1927                       esc_html($short)) . $extra;
1928        } else {
1929                return $cgi->a({-href => $href, -class => "list subject"},
1930                       esc_html($long)) . $extra;
1931        }
1932}
1933
1934# Rather than recomputing the url for an email multiple times, we cache it
1935# after the first hit. This gives a visible benefit in views where the avatar
1936# for the same email is used repeatedly (e.g. shortlog).
1937# The cache is shared by all avatar engines (currently gravatar only), which
1938# are free to use it as preferred. Since only one avatar engine is used for any
1939# given page, there's no risk for cache conflicts.
1940our %avatar_cache = ();
1941
1942# Compute the picon url for a given email, by using the picon search service over at
1943# http://www.cs.indiana.edu/picons/search.html
1944sub picon_url {
1945        my $email = lc shift;
1946        if (!$avatar_cache{$email}) {
1947                my ($user, $domain) = split('@', $email);
1948                $avatar_cache{$email} =
1949                        "http://www.cs.indiana.edu/cgi-pub/kinzler/piconsearch.cgi/" .
1950                        "$domain/$user/" .
1951                        "users+domains+unknown/up/single";
1952        }
1953        return $avatar_cache{$email};
1954}
1955
1956# Compute the gravatar url for a given email, if it's not in the cache already.
1957# Gravatar stores only the part of the URL before the size, since that's the
1958# one computationally more expensive. This also allows reuse of the cache for
1959# different sizes (for this particular engine).
1960sub gravatar_url {
1961        my $email = lc shift;
1962        my $size = shift;
1963        $avatar_cache{$email} ||=
1964                "http://www.gravatar.com/avatar/" .
1965                        Digest::MD5::md5_hex($email) . "?s=";
1966        return $avatar_cache{$email} . $size;
1967}
1968
1969# Insert an avatar for the given $email at the given $size if the feature
1970# is enabled.
1971sub git_get_avatar {
1972        my ($email, %opts) = @_;
1973        my $pre_white  = ($opts{-pad_before} ? "&nbsp;" : "");
1974        my $post_white = ($opts{-pad_after}  ? "&nbsp;" : "");
1975        $opts{-size} ||= 'default';
1976        my $size = $avatar_size{$opts{-size}} || $avatar_size{'default'};
1977        my $url = "";
1978        if ($git_avatar eq 'gravatar') {
1979                $url = gravatar_url($email, $size);
1980        } elsif ($git_avatar eq 'picon') {
1981                $url = picon_url($email);
1982        }
1983        # Other providers can be added by extending the if chain, defining $url
1984        # as needed. If no variant puts something in $url, we assume avatars
1985        # are completely disabled/unavailable.
1986        if ($url) {
1987                return $pre_white .
1988                       "<img width=\"$size\" " .
1989                            "class=\"avatar\" " .
1990                            "src=\"".esc_url($url)."\" " .
1991                            "alt=\"\" " .
1992                       "/>" . $post_white;
1993        } else {
1994                return "";
1995        }
1996}
1997
1998sub format_search_author {
1999        my ($author, $searchtype, $displaytext) = @_;
2000        my $have_search = gitweb_check_feature('search');
2001
2002        if ($have_search) {
2003                my $performed = "";
2004                if ($searchtype eq 'author') {
2005                        $performed = "authored";
2006                } elsif ($searchtype eq 'committer') {
2007                        $performed = "committed";
2008                }
2009
2010                return $cgi->a({-href => href(action=>"search", hash=>$hash,
2011                                searchtext=>$author,
2012                                searchtype=>$searchtype), class=>"list",
2013                                title=>"Search for commits $performed by $author"},
2014                                $displaytext);
2015
2016        } else {
2017                return $displaytext;
2018        }
2019}
2020
2021# format the author name of the given commit with the given tag
2022# the author name is chopped and escaped according to the other
2023# optional parameters (see chop_str).
2024sub format_author_html {
2025        my $tag = shift;
2026        my $co = shift;
2027        my $author = chop_and_escape_str($co->{'author_name'}, @_);
2028        return "<$tag class=\"author\">" .
2029               format_search_author($co->{'author_name'}, "author",
2030                       git_get_avatar($co->{'author_email'}, -pad_after => 1) .
2031                       $author) .
2032               "</$tag>";
2033}
2034
2035# format git diff header line, i.e. "diff --(git|combined|cc) ..."
2036sub format_git_diff_header_line {
2037        my $line = shift;
2038        my $diffinfo = shift;
2039        my ($from, $to) = @_;
2040
2041        if ($diffinfo->{'nparents'}) {
2042                # combined diff
2043                $line =~ s!^(diff (.*?) )"?.*$!$1!;
2044                if ($to->{'href'}) {
2045                        $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
2046                                         esc_path($to->{'file'}));
2047                } else { # file was deleted (no href)
2048                        $line .= esc_path($to->{'file'});
2049                }
2050        } else {
2051                # "ordinary" diff
2052                $line =~ s!^(diff (.*?) )"?a/.*$!$1!;
2053                if ($from->{'href'}) {
2054                        $line .= $cgi->a({-href => $from->{'href'}, -class => "path"},
2055                                         'a/' . esc_path($from->{'file'}));
2056                } else { # file was added (no href)
2057                        $line .= 'a/' . esc_path($from->{'file'});
2058                }
2059                $line .= ' ';
2060                if ($to->{'href'}) {
2061                        $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
2062                                         'b/' . esc_path($to->{'file'}));
2063                } else { # file was deleted
2064                        $line .= 'b/' . esc_path($to->{'file'});
2065                }
2066        }
2067
2068        return "<div class=\"diff header\">$line</div>\n";
2069}
2070
2071# format extended diff header line, before patch itself
2072sub format_extended_diff_header_line {
2073        my $line = shift;
2074        my $diffinfo = shift;
2075        my ($from, $to) = @_;
2076
2077        # match <path>
2078        if ($line =~ s!^((copy|rename) from ).*$!$1! && $from->{'href'}) {
2079                $line .= $cgi->a({-href=>$from->{'href'}, -class=>"path"},
2080                                       esc_path($from->{'file'}));
2081        }
2082        if ($line =~ s!^((copy|rename) to ).*$!$1! && $to->{'href'}) {
2083                $line .= $cgi->a({-href=>$to->{'href'}, -class=>"path"},
2084                                 esc_path($to->{'file'}));
2085        }
2086        # match single <mode>
2087        if ($line =~ m/\s(\d{6})$/) {
2088                $line .= '<span class="info"> (' .
2089                         file_type_long($1) .
2090                         ')</span>';
2091        }
2092        # match <hash>
2093        if ($line =~ m/^index [0-9a-fA-F]{40},[0-9a-fA-F]{40}/) {
2094                # can match only for combined diff
2095                $line = 'index ';
2096                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2097                        if ($from->{'href'}[$i]) {
2098                                $line .= $cgi->a({-href=>$from->{'href'}[$i],
2099                                                  -class=>"hash"},
2100                                                 substr($diffinfo->{'from_id'}[$i],0,7));
2101                        } else {
2102                                $line .= '0' x 7;
2103                        }
2104                        # separator
2105                        $line .= ',' if ($i < $diffinfo->{'nparents'} - 1);
2106                }
2107                $line .= '..';
2108                if ($to->{'href'}) {
2109                        $line .= $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
2110                                         substr($diffinfo->{'to_id'},0,7));
2111                } else {
2112                        $line .= '0' x 7;
2113                }
2114
2115        } elsif ($line =~ m/^index [0-9a-fA-F]{40}..[0-9a-fA-F]{40}/) {
2116                # can match only for ordinary diff
2117                my ($from_link, $to_link);
2118                if ($from->{'href'}) {
2119                        $from_link = $cgi->a({-href=>$from->{'href'}, -class=>"hash"},
2120                                             substr($diffinfo->{'from_id'},0,7));
2121                } else {
2122                        $from_link = '0' x 7;
2123                }
2124                if ($to->{'href'}) {
2125                        $to_link = $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
2126                                           substr($diffinfo->{'to_id'},0,7));
2127                } else {
2128                        $to_link = '0' x 7;
2129                }
2130                my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2131                $line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
2132        }
2133
2134        return $line . "<br/>\n";
2135}
2136
2137# format from-file/to-file diff header
2138sub format_diff_from_to_header {
2139        my ($from_line, $to_line, $diffinfo, $from, $to, @parents) = @_;
2140        my $line;
2141        my $result = '';
2142
2143        $line = $from_line;
2144        #assert($line =~ m/^---/) if DEBUG;
2145        # no extra formatting for "^--- /dev/null"
2146        if (! $diffinfo->{'nparents'}) {
2147                # ordinary (single parent) diff
2148                if ($line =~ m!^--- "?a/!) {
2149                        if ($from->{'href'}) {
2150                                $line = '--- a/' .
2151                                        $cgi->a({-href=>$from->{'href'}, -class=>"path"},
2152                                                esc_path($from->{'file'}));
2153                        } else {
2154                                $line = '--- a/' .
2155                                        esc_path($from->{'file'});
2156                        }
2157                }
2158                $result .= qq!<div class="diff from_file">$line</div>\n!;
2159
2160        } else {
2161                # combined diff (merge commit)
2162                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2163                        if ($from->{'href'}[$i]) {
2164                                $line = '--- ' .
2165                                        $cgi->a({-href=>href(action=>"blobdiff",
2166                                                             hash_parent=>$diffinfo->{'from_id'}[$i],
2167                                                             hash_parent_base=>$parents[$i],
2168                                                             file_parent=>$from->{'file'}[$i],
2169                                                             hash=>$diffinfo->{'to_id'},
2170                                                             hash_base=>$hash,
2171                                                             file_name=>$to->{'file'}),
2172                                                 -class=>"path",
2173                                                 -title=>"diff" . ($i+1)},
2174                                                $i+1) .
2175                                        '/' .
2176                                        $cgi->a({-href=>$from->{'href'}[$i], -class=>"path"},
2177                                                esc_path($from->{'file'}[$i]));
2178                        } else {
2179                                $line = '--- /dev/null';
2180                        }
2181                        $result .= qq!<div class="diff from_file">$line</div>\n!;
2182                }
2183        }
2184
2185        $line = $to_line;
2186        #assert($line =~ m/^\+\+\+/) if DEBUG;
2187        # no extra formatting for "^+++ /dev/null"
2188        if ($line =~ m!^\+\+\+ "?b/!) {
2189                if ($to->{'href'}) {
2190                        $line = '+++ b/' .
2191                                $cgi->a({-href=>$to->{'href'}, -class=>"path"},
2192                                        esc_path($to->{'file'}));
2193                } else {
2194                        $line = '+++ b/' .
2195                                esc_path($to->{'file'});
2196                }
2197        }
2198        $result .= qq!<div class="diff to_file">$line</div>\n!;
2199
2200        return $result;
2201}
2202
2203# create note for patch simplified by combined diff
2204sub format_diff_cc_simplified {
2205        my ($diffinfo, @parents) = @_;
2206        my $result = '';
2207
2208        $result .= "<div class=\"diff header\">" .
2209                   "diff --cc ";
2210        if (!is_deleted($diffinfo)) {
2211                $result .= $cgi->a({-href => href(action=>"blob",
2212                                                  hash_base=>$hash,
2213                                                  hash=>$diffinfo->{'to_id'},
2214                                                  file_name=>$diffinfo->{'to_file'}),
2215                                    -class => "path"},
2216                                   esc_path($diffinfo->{'to_file'}));
2217        } else {
2218                $result .= esc_path($diffinfo->{'to_file'});
2219        }
2220        $result .= "</div>\n" . # class="diff header"
2221                   "<div class=\"diff nodifferences\">" .
2222                   "Simple merge" .
2223                   "</div>\n"; # class="diff nodifferences"
2224
2225        return $result;
2226}
2227
2228# format patch (diff) line (not to be used for diff headers)
2229sub format_diff_line {
2230        my $line = shift;
2231        my ($from, $to) = @_;
2232        my $diff_class = "";
2233
2234        chomp $line;
2235
2236        if ($from && $to && ref($from->{'href'}) eq "ARRAY") {
2237                # combined diff
2238                my $prefix = substr($line, 0, scalar @{$from->{'href'}});
2239                if ($line =~ m/^\@{3}/) {
2240                        $diff_class = " chunk_header";
2241                } elsif ($line =~ m/^\\/) {
2242                        $diff_class = " incomplete";
2243                } elsif ($prefix =~ tr/+/+/) {
2244                        $diff_class = " add";
2245                } elsif ($prefix =~ tr/-/-/) {
2246                        $diff_class = " rem";
2247                }
2248        } else {
2249                # assume ordinary diff
2250                my $char = substr($line, 0, 1);
2251                if ($char eq '+') {
2252                        $diff_class = " add";
2253                } elsif ($char eq '-') {
2254                        $diff_class = " rem";
2255                } elsif ($char eq '@') {
2256                        $diff_class = " chunk_header";
2257                } elsif ($char eq "\\") {
2258                        $diff_class = " incomplete";
2259                }
2260        }
2261        $line = untabify($line);
2262        if ($from && $to && $line =~ m/^\@{2} /) {
2263                my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
2264                        $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
2265
2266                $from_lines = 0 unless defined $from_lines;
2267                $to_lines   = 0 unless defined $to_lines;
2268
2269                if ($from->{'href'}) {
2270                        $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
2271                                             -class=>"list"}, $from_text);
2272                }
2273                if ($to->{'href'}) {
2274                        $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
2275                                             -class=>"list"}, $to_text);
2276                }
2277                $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
2278                        "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
2279                return "<div class=\"diff$diff_class\">$line</div>\n";
2280        } elsif ($from && $to && $line =~ m/^\@{3}/) {
2281                my ($prefix, $ranges, $section) = $line =~ m/^(\@+) (.*?) \@+(.*)$/;
2282                my (@from_text, @from_start, @from_nlines, $to_text, $to_start, $to_nlines);
2283
2284                @from_text = split(' ', $ranges);
2285                for (my $i = 0; $i < @from_text; ++$i) {
2286                        ($from_start[$i], $from_nlines[$i]) =
2287                                (split(',', substr($from_text[$i], 1)), 0);
2288                }
2289
2290                $to_text   = pop @from_text;
2291                $to_start  = pop @from_start;
2292                $to_nlines = pop @from_nlines;
2293
2294                $line = "<span class=\"chunk_info\">$prefix ";
2295                for (my $i = 0; $i < @from_text; ++$i) {
2296                        if ($from->{'href'}[$i]) {
2297                                $line .= $cgi->a({-href=>"$from->{'href'}[$i]#l$from_start[$i]",
2298                                                  -class=>"list"}, $from_text[$i]);
2299                        } else {
2300                                $line .= $from_text[$i];
2301                        }
2302                        $line .= " ";
2303                }
2304                if ($to->{'href'}) {
2305                        $line .= $cgi->a({-href=>"$to->{'href'}#l$to_start",
2306                                          -class=>"list"}, $to_text);
2307                } else {
2308                        $line .= $to_text;
2309                }
2310                $line .= " $prefix</span>" .
2311                         "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
2312                return "<div class=\"diff$diff_class\">$line</div>\n";
2313        }
2314        return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
2315}
2316
2317# Generates undef or something like "_snapshot_" or "snapshot (_tbz2_ _zip_)",
2318# linked.  Pass the hash of the tree/commit to snapshot.
2319sub format_snapshot_links {
2320        my ($hash) = @_;
2321        my $num_fmts = @snapshot_fmts;
2322        if ($num_fmts > 1) {
2323                # A parenthesized list of links bearing format names.
2324                # e.g. "snapshot (_tar.gz_ _zip_)"
2325                return "snapshot (" . join(' ', map
2326                        $cgi->a({
2327                                -href => href(
2328                                        action=>"snapshot",
2329                                        hash=>$hash,
2330                                        snapshot_format=>$_
2331                                )
2332                        }, $known_snapshot_formats{$_}{'display'})
2333                , @snapshot_fmts) . ")";
2334        } elsif ($num_fmts == 1) {
2335                # A single "snapshot" link whose tooltip bears the format name.
2336                # i.e. "_snapshot_"
2337                my ($fmt) = @snapshot_fmts;
2338                return
2339                        $cgi->a({
2340                                -href => href(
2341                                        action=>"snapshot",
2342                                        hash=>$hash,
2343                                        snapshot_format=>$fmt
2344                                ),
2345                                -title => "in format: $known_snapshot_formats{$fmt}{'display'}"
2346                        }, "snapshot");
2347        } else { # $num_fmts == 0
2348                return undef;
2349        }
2350}
2351
2352## ......................................................................
2353## functions returning values to be passed, perhaps after some
2354## transformation, to other functions; e.g. returning arguments to href()
2355
2356# returns hash to be passed to href to generate gitweb URL
2357# in -title key it returns description of link
2358sub get_feed_info {
2359        my $format = shift || 'Atom';
2360        my %res = (action => lc($format));
2361
2362        # feed links are possible only for project views
2363        return unless (defined $project);
2364        # some views should link to OPML, or to generic project feed,
2365        # or don't have specific feed yet (so they should use generic)
2366        return if ($action =~ /^(?:tags|heads|forks|tag|search)$/x);
2367
2368        my $branch;
2369        # branches refs uses 'refs/heads/' prefix (fullname) to differentiate
2370        # from tag links; this also makes possible to detect branch links
2371        if ((defined $hash_base && $hash_base =~ m!^refs/heads/(.*)$!) ||
2372            (defined $hash      && $hash      =~ m!^refs/heads/(.*)$!)) {
2373                $branch = $1;
2374        }
2375        # find log type for feed description (title)
2376        my $type = 'log';
2377        if (defined $file_name) {
2378                $type  = "history of $file_name";
2379                $type .= "/" if ($action eq 'tree');
2380                $type .= " on '$branch'" if (defined $branch);
2381        } else {
2382                $type = "log of $branch" if (defined $branch);
2383        }
2384
2385        $res{-title} = $type;
2386        $res{'hash'} = (defined $branch ? "refs/heads/$branch" : undef);
2387        $res{'file_name'} = $file_name;
2388
2389        return %res;
2390}
2391
2392## ----------------------------------------------------------------------
2393## git utility subroutines, invoking git commands
2394
2395# returns path to the core git executable and the --git-dir parameter as list
2396sub git_cmd {
2397        $number_of_git_cmds++;
2398        return $GIT, '--git-dir='.$git_dir;
2399}
2400
2401# quote the given arguments for passing them to the shell
2402# quote_command("command", "arg 1", "arg with ' and ! characters")
2403# => "'command' 'arg 1' 'arg with '\'' and '\!' characters'"
2404# Try to avoid using this function wherever possible.
2405sub quote_command {
2406        return join(' ',
2407                map { my $a = $_; $a =~ s/(['!])/'\\$1'/g; "'$a'" } @_ );
2408}
2409
2410# get HEAD ref of given project as hash
2411sub git_get_head_hash {
2412        return git_get_full_hash(shift, 'HEAD');
2413}
2414
2415sub git_get_full_hash {
2416        return git_get_hash(@_);
2417}
2418
2419sub git_get_short_hash {
2420        return git_get_hash(@_, '--short=7');
2421}
2422
2423sub git_get_hash {
2424        my ($project, $hash, @options) = @_;
2425        my $o_git_dir = $git_dir;
2426        my $retval = undef;
2427        $git_dir = "$projectroot/$project";
2428        if (open my $fd, '-|', git_cmd(), 'rev-parse',
2429            '--verify', '-q', @options, $hash) {
2430                $retval = <$fd>;
2431                chomp $retval if defined $retval;
2432                close $fd;
2433        }
2434        if (defined $o_git_dir) {
2435                $git_dir = $o_git_dir;
2436        }
2437        return $retval;
2438}
2439
2440# get type of given object
2441sub git_get_type {
2442        my $hash = shift;
2443
2444        open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
2445        my $type = <$fd>;
2446        close $fd or return;
2447        chomp $type;
2448        return $type;
2449}
2450
2451# repository configuration
2452our $config_file = '';
2453our %config;
2454
2455# store multiple values for single key as anonymous array reference
2456# single values stored directly in the hash, not as [ <value> ]
2457sub hash_set_multi {
2458        my ($hash, $key, $value) = @_;
2459
2460        if (!exists $hash->{$key}) {
2461                $hash->{$key} = $value;
2462        } elsif (!ref $hash->{$key}) {
2463                $hash->{$key} = [ $hash->{$key}, $value ];
2464        } else {
2465                push @{$hash->{$key}}, $value;
2466        }
2467}
2468
2469# return hash of git project configuration
2470# optionally limited to some section, e.g. 'gitweb'
2471sub git_parse_project_config {
2472        my $section_regexp = shift;
2473        my %config;
2474
2475        local $/ = "\0";
2476
2477        open my $fh, "-|", git_cmd(), "config", '-z', '-l',
2478                or return;
2479
2480        while (my $keyval = <$fh>) {
2481                chomp $keyval;
2482                my ($key, $value) = split(/\n/, $keyval, 2);
2483
2484                hash_set_multi(\%config, $key, $value)
2485                        if (!defined $section_regexp || $key =~ /^(?:$section_regexp)\./o);
2486        }
2487        close $fh;
2488
2489        return %config;
2490}
2491
2492# convert config value to boolean: 'true' or 'false'
2493# no value, number > 0, 'true' and 'yes' values are true
2494# rest of values are treated as false (never as error)
2495sub config_to_bool {
2496        my $val = shift;
2497
2498        return 1 if !defined $val;             # section.key
2499
2500        # strip leading and trailing whitespace
2501        $val =~ s/^\s+//;
2502        $val =~ s/\s+$//;
2503
2504        return (($val =~ /^\d+$/ && $val) ||   # section.key = 1
2505                ($val =~ /^(?:true|yes)$/i));  # section.key = true
2506}
2507
2508# convert config value to simple decimal number
2509# an optional value suffix of 'k', 'm', or 'g' will cause the value
2510# to be multiplied by 1024, 1048576, or 1073741824
2511sub config_to_int {
2512        my $val = shift;
2513
2514        # strip leading and trailing whitespace
2515        $val =~ s/^\s+//;
2516        $val =~ s/\s+$//;
2517
2518        if (my ($num, $unit) = ($val =~ /^([0-9]*)([kmg])$/i)) {
2519                $unit = lc($unit);
2520                # unknown unit is treated as 1
2521                return $num * ($unit eq 'g' ? 1073741824 :
2522                               $unit eq 'm' ?    1048576 :
2523                               $unit eq 'k' ?       1024 : 1);
2524        }
2525        return $val;
2526}
2527
2528# convert config value to array reference, if needed
2529sub config_to_multi {
2530        my $val = shift;
2531
2532        return ref($val) ? $val : (defined($val) ? [ $val ] : []);
2533}
2534
2535sub git_get_project_config {
2536        my ($key, $type) = @_;
2537
2538        return unless defined $git_dir;
2539
2540        # key sanity check
2541        return unless ($key);
2542        # only subsection, if exists, is case sensitive,
2543        # and not lowercased by 'git config -z -l'
2544        if (my ($hi, $mi, $lo) = ($key =~ /^([^.]*)\.(.*)\.([^.]*)$/)) {
2545                $key = join(".", lc($hi), $mi, lc($lo));
2546        } else {
2547                $key = lc($key);
2548        }
2549        $key =~ s/^gitweb\.//;
2550        return if ($key =~ m/\W/);
2551
2552        # type sanity check
2553        if (defined $type) {
2554                $type =~ s/^--//;
2555                $type = undef
2556                        unless ($type eq 'bool' || $type eq 'int');
2557        }
2558
2559        # get config
2560        if (!defined $config_file ||
2561            $config_file ne "$git_dir/config") {
2562                %config = git_parse_project_config('gitweb');
2563                $config_file = "$git_dir/config";
2564        }
2565
2566        # check if config variable (key) exists
2567        return unless exists $config{"gitweb.$key"};
2568
2569        # ensure given type
2570        if (!defined $type) {
2571                return $config{"gitweb.$key"};
2572        } elsif ($type eq 'bool') {
2573                # backward compatibility: 'git config --bool' returns true/false
2574                return config_to_bool($config{"gitweb.$key"}) ? 'true' : 'false';
2575        } elsif ($type eq 'int') {
2576                return config_to_int($config{"gitweb.$key"});
2577        }
2578        return $config{"gitweb.$key"};
2579}
2580
2581# get hash of given path at given ref
2582sub git_get_hash_by_path {
2583        my $base = shift;
2584        my $path = shift || return undef;
2585        my $type = shift;
2586
2587        $path =~ s,/+$,,;
2588
2589        open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
2590                or die_error(500, "Open git-ls-tree failed");
2591        my $line = <$fd>;
2592        close $fd or return undef;
2593
2594        if (!defined $line) {
2595                # there is no tree or hash given by $path at $base
2596                return undef;
2597        }
2598
2599        #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
2600        $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
2601        if (defined $type && $type ne $2) {
2602                # type doesn't match
2603                return undef;
2604        }
2605        return $3;
2606}
2607
2608# get path of entry with given hash at given tree-ish (ref)
2609# used to get 'from' filename for combined diff (merge commit) for renames
2610sub git_get_path_by_hash {
2611        my $base = shift || return;
2612        my $hash = shift || return;
2613
2614        local $/ = "\0";
2615
2616        open my $fd, "-|", git_cmd(), "ls-tree", '-r', '-t', '-z', $base
2617                or return undef;
2618        while (my $line = <$fd>) {
2619                chomp $line;
2620
2621                #'040000 tree 595596a6a9117ddba9fe379b6b012b558bac8423  gitweb'
2622                #'100644 blob e02e90f0429be0d2a69b76571101f20b8f75530f  gitweb/README'
2623                if ($line =~ m/(?:[0-9]+) (?:.+) $hash\t(.+)$/) {
2624                        close $fd;
2625                        return $1;
2626                }
2627        }
2628        close $fd;
2629        return undef;
2630}
2631
2632## ......................................................................
2633## git utility functions, directly accessing git repository
2634
2635# get the value of config variable either from file named as the variable
2636# itself in the repository ($GIT_DIR/$name file), or from gitweb.$name
2637# configuration variable in the repository config file.
2638sub git_get_file_or_project_config {
2639        my ($path, $name) = @_;
2640
2641        $git_dir = "$projectroot/$path";
2642        open my $fd, '<', "$git_dir/$name"
2643                or return git_get_project_config($name);
2644        my $conf = <$fd>;
2645        close $fd;
2646        if (defined $conf) {
2647                chomp $conf;
2648        }
2649        return $conf;
2650}
2651
2652sub git_get_project_description {
2653        my $path = shift;
2654        return git_get_file_or_project_config($path, 'description');
2655}
2656
2657sub git_get_project_category {
2658        my $path = shift;
2659        return git_get_file_or_project_config($path, 'category');
2660}
2661
2662
2663# supported formats:
2664# * $GIT_DIR/ctags/<tagname> file (in 'ctags' subdirectory)
2665#   - if its contents is a number, use it as tag weight,
2666#   - otherwise add a tag with weight 1
2667# * $GIT_DIR/ctags file, each line is a tag (with weight 1)
2668#   the same value multiple times increases tag weight
2669# * `gitweb.ctag' multi-valued repo config variable
2670sub git_get_project_ctags {
2671        my $project = shift;
2672        my $ctags = {};
2673
2674        $git_dir = "$projectroot/$project";
2675        if (opendir my $dh, "$git_dir/ctags") {
2676                my @files = grep { -f $_ } map { "$git_dir/ctags/$_" } readdir($dh);
2677                foreach my $tagfile (@files) {
2678                        open my $ct, '<', $tagfile
2679                                or next;
2680                        my $val = <$ct>;
2681                        chomp $val if $val;
2682                        close $ct;
2683
2684                        (my $ctag = $tagfile) =~ s#.*/##;
2685                        if ($val =~ /^\d+$/) {
2686                                $ctags->{$ctag} = $val;
2687                        } else {
2688                                $ctags->{$ctag} = 1;
2689                        }
2690                }
2691                closedir $dh;
2692
2693        } elsif (open my $fh, '<', "$git_dir/ctags") {
2694                while (my $line = <$fh>) {
2695                        chomp $line;
2696                        $ctags->{$line}++ if $line;
2697                }
2698                close $fh;
2699
2700        } else {
2701                my $taglist = config_to_multi(git_get_project_config('ctag'));
2702                foreach my $tag (@$taglist) {
2703                        $ctags->{$tag}++;
2704                }
2705        }
2706
2707        return $ctags;
2708}
2709
2710# return hash, where keys are content tags ('ctags'),
2711# and values are sum of weights of given tag in every project
2712sub git_gather_all_ctags {
2713        my $projects = shift;
2714        my $ctags = {};
2715
2716        foreach my $p (@$projects) {
2717                foreach my $ct (keys %{$p->{'ctags'}}) {
2718                        $ctags->{$ct} += $p->{'ctags'}->{$ct};
2719                }
2720        }
2721
2722        return $ctags;
2723}
2724
2725sub git_populate_project_tagcloud {
2726        my $ctags = shift;
2727
2728        # First, merge different-cased tags; tags vote on casing
2729        my %ctags_lc;
2730        foreach (keys %$ctags) {
2731                $ctags_lc{lc $_}->{count} += $ctags->{$_};
2732                if (not $ctags_lc{lc $_}->{topcount}
2733                    or $ctags_lc{lc $_}->{topcount} < $ctags->{$_}) {
2734                        $ctags_lc{lc $_}->{topcount} = $ctags->{$_};
2735                        $ctags_lc{lc $_}->{topname} = $_;
2736                }
2737        }
2738
2739        my $cloud;
2740        my $matched = $cgi->param('by_tag');
2741        if (eval { require HTML::TagCloud; 1; }) {
2742                $cloud = HTML::TagCloud->new;
2743                foreach my $ctag (sort keys %ctags_lc) {
2744                        # Pad the title with spaces so that the cloud looks
2745                        # less crammed.
2746                        my $title = esc_html($ctags_lc{$ctag}->{topname});
2747                        $title =~ s/ /&nbsp;/g;
2748                        $title =~ s/^/&nbsp;/g;
2749                        $title =~ s/$/&nbsp;/g;
2750                        if (defined $matched && $matched eq $ctag) {
2751                                $title = qq(<span class="match">$title</span>);
2752                        }
2753                        $cloud->add($title, href(project=>undef, ctag=>$ctag),
2754                                    $ctags_lc{$ctag}->{count});
2755                }
2756        } else {
2757                $cloud = {};
2758                foreach my $ctag (keys %ctags_lc) {
2759                        my $title = esc_html($ctags_lc{$ctag}->{topname}, -nbsp=>1);
2760                        if (defined $matched && $matched eq $ctag) {
2761                                $title = qq(<span class="match">$title</span>);
2762                        }
2763                        $cloud->{$ctag}{count} = $ctags_lc{$ctag}->{count};
2764                        $cloud->{$ctag}{ctag} =
2765                                $cgi->a({-href=>href(project=>undef, ctag=>$ctag)}, $title);
2766                }
2767        }
2768        return $cloud;
2769}
2770
2771sub git_show_project_tagcloud {
2772        my ($cloud, $count) = @_;
2773        if (ref $cloud eq 'HTML::TagCloud') {
2774                return $cloud->html_and_css($count);
2775        } else {
2776                my @tags = sort { $cloud->{$a}->{'count'} <=> $cloud->{$b}->{'count'} } keys %$cloud;
2777                return
2778                        '<div id="htmltagcloud"'.($project ? '' : ' align="center"').'>' .
2779                        join (', ', map {
2780                                $cloud->{$_}->{'ctag'}
2781                        } splice(@tags, 0, $count)) .
2782                        '</div>';
2783        }
2784}
2785
2786sub git_get_project_url_list {
2787        my $path = shift;
2788
2789        $git_dir = "$projectroot/$path";
2790        open my $fd, '<', "$git_dir/cloneurl"
2791                or return wantarray ?
2792                @{ config_to_multi(git_get_project_config('url')) } :
2793                   config_to_multi(git_get_project_config('url'));
2794        my @git_project_url_list = map { chomp; $_ } <$fd>;
2795        close $fd;
2796
2797        return wantarray ? @git_project_url_list : \@git_project_url_list;
2798}
2799
2800sub git_get_projects_list {
2801        my $filter = shift || '';
2802        my @list;
2803
2804        $filter =~ s/\.git$//;
2805
2806        if (-d $projects_list) {
2807                # search in directory
2808                my $dir = $projects_list;
2809                # remove the trailing "/"
2810                $dir =~ s!/+$!!;
2811                my $pfxlen = length("$projects_list");
2812                my $pfxdepth = ($projects_list =~ tr!/!!);
2813                # when filtering, search only given subdirectory
2814                if ($filter) {
2815                        $dir .= "/$filter";
2816                        $dir =~ s!/+$!!;
2817                }
2818
2819                File::Find::find({
2820                        follow_fast => 1, # follow symbolic links
2821                        follow_skip => 2, # ignore duplicates
2822                        dangling_symlinks => 0, # ignore dangling symlinks, silently
2823                        wanted => sub {
2824                                # global variables
2825                                our $project_maxdepth;
2826                                our $projectroot;
2827                                # skip project-list toplevel, if we get it.
2828                                return if (m!^[/.]$!);
2829                                # only directories can be git repositories
2830                                return unless (-d $_);
2831                                # don't traverse too deep (Find is super slow on os x)
2832                                # $project_maxdepth excludes depth of $projectroot
2833                                if (($File::Find::name =~ tr!/!!) - $pfxdepth > $project_maxdepth) {
2834                                        $File::Find::prune = 1;
2835                                        return;
2836                                }
2837
2838                                my $path = substr($File::Find::name, $pfxlen + 1);
2839                                # we check related file in $projectroot
2840                                if (check_export_ok("$projectroot/$path")) {
2841                                        push @list, { path => $path };
2842                                        $File::Find::prune = 1;
2843                                }
2844                        },
2845                }, "$dir");
2846
2847        } elsif (-f $projects_list) {
2848                # read from file(url-encoded):
2849                # 'git%2Fgit.git Linus+Torvalds'
2850                # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
2851                # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
2852                open my $fd, '<', $projects_list or return;
2853        PROJECT:
2854                while (my $line = <$fd>) {
2855                        chomp $line;
2856                        my ($path, $owner) = split ' ', $line;
2857                        $path = unescape($path);
2858                        $owner = unescape($owner);
2859                        if (!defined $path) {
2860                                next;
2861                        }
2862                        # if $filter is rpovided, check if $path begins with $filter
2863                        if ($filter && $path !~ m!^\Q$filter\E/!) {
2864                                next;
2865                        }
2866                        if (check_export_ok("$projectroot/$path")) {
2867                                my $pr = {
2868                                        path => $path,
2869                                        owner => to_utf8($owner),
2870                                };
2871                                push @list, $pr;
2872                        }
2873                }
2874                close $fd;
2875        }
2876        return @list;
2877}
2878
2879# written with help of Tree::Trie module (Perl Artistic License, GPL compatibile)
2880# as side effects it sets 'forks' field to list of forks for forked projects
2881sub filter_forks_from_projects_list {
2882        my $projects = shift;
2883
2884        my %trie; # prefix tree of directories (path components)
2885        # generate trie out of those directories that might contain forks
2886        foreach my $pr (@$projects) {
2887                my $path = $pr->{'path'};
2888                $path =~ s/\.git$//;      # forks of 'repo.git' are in 'repo/' directory
2889                next if ($path =~ m!/$!); # skip non-bare repositories, e.g. 'repo/.git'
2890                next unless ($path);      # skip '.git' repository: tests, git-instaweb
2891                next unless (-d "$projectroot/$path"); # containing directory exists
2892                $pr->{'forks'} = [];      # there can be 0 or more forks of project
2893
2894                # add to trie
2895                my @dirs = split('/', $path);
2896                # walk the trie, until either runs out of components or out of trie
2897                my $ref = \%trie;
2898                while (scalar @dirs &&
2899                       exists($ref->{$dirs[0]})) {
2900                        $ref = $ref->{shift @dirs};
2901                }
2902                # create rest of trie structure from rest of components
2903                foreach my $dir (@dirs) {
2904                        $ref = $ref->{$dir} = {};
2905                }
2906                # create end marker, store $pr as a data
2907                $ref->{''} = $pr if (!exists $ref->{''});
2908        }
2909
2910        # filter out forks, by finding shortest prefix match for paths
2911        my @filtered;
2912 PROJECT:
2913        foreach my $pr (@$projects) {
2914                # trie lookup
2915                my $ref = \%trie;
2916        DIR:
2917                foreach my $dir (split('/', $pr->{'path'})) {
2918                        if (exists $ref->{''}) {
2919                                # found [shortest] prefix, is a fork - skip it
2920                                push @{$ref->{''}{'forks'}}, $pr;
2921                                next PROJECT;
2922                        }
2923                        if (!exists $ref->{$dir}) {
2924                                # not in trie, cannot have prefix, not a fork
2925                                push @filtered, $pr;
2926                                next PROJECT;
2927                        }
2928                        # If the dir is there, we just walk one step down the trie.
2929                        $ref = $ref->{$dir};
2930                }
2931                # we ran out of trie
2932                # (shouldn't happen: it's either no match, or end marker)
2933                push @filtered, $pr;
2934        }
2935
2936        return @filtered;
2937}
2938
2939# note: fill_project_list_info must be run first,
2940# for 'descr_long' and 'ctags' to be filled
2941sub search_projects_list {
2942        my ($projlist, %opts) = @_;
2943        my $tagfilter  = $opts{'tagfilter'};
2944        my $searchtext = $opts{'searchtext'};
2945
2946        return @$projlist
2947                unless ($tagfilter || $searchtext);
2948
2949        my @projects;
2950 PROJECT:
2951        foreach my $pr (@$projlist) {
2952
2953                if ($tagfilter) {
2954                        next unless ref($pr->{'ctags'}) eq 'HASH';
2955                        next unless
2956                                grep { lc($_) eq lc($tagfilter) } keys %{$pr->{'ctags'}};
2957                }
2958
2959                if ($searchtext) {
2960                        next unless
2961                                $pr->{'path'} =~ /$searchtext/ ||
2962                                $pr->{'descr_long'} =~ /$searchtext/;
2963                }
2964
2965                push @projects, $pr;
2966        }
2967
2968        return @projects;
2969}
2970
2971our $gitweb_project_owner = undef;
2972sub git_get_project_list_from_file {
2973
2974        return if (defined $gitweb_project_owner);
2975
2976        $gitweb_project_owner = {};
2977        # read from file (url-encoded):
2978        # 'git%2Fgit.git Linus+Torvalds'
2979        # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
2980        # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
2981        if (-f $projects_list) {
2982                open(my $fd, '<', $projects_list);
2983                while (my $line = <$fd>) {
2984                        chomp $line;
2985                        my ($pr, $ow) = split ' ', $line;
2986                        $pr = unescape($pr);
2987                        $ow = unescape($ow);
2988                        $gitweb_project_owner->{$pr} = to_utf8($ow);
2989                }
2990                close $fd;
2991        }
2992}
2993
2994sub git_get_project_owner {
2995        my $project = shift;
2996        my $owner;
2997
2998        return undef unless $project;
2999        $git_dir = "$projectroot/$project";
3000
3001        if (!defined $gitweb_project_owner) {
3002                git_get_project_list_from_file();
3003        }
3004
3005        if (exists $gitweb_project_owner->{$project}) {
3006                $owner = $gitweb_project_owner->{$project};
3007        }
3008        if (!defined $owner){
3009                $owner = git_get_project_config('owner');
3010        }
3011        if (!defined $owner) {
3012                $owner = get_file_owner("$git_dir");
3013        }
3014
3015        return $owner;
3016}
3017
3018sub git_get_last_activity {
3019        my ($path) = @_;
3020        my $fd;
3021
3022        $git_dir = "$projectroot/$path";
3023        open($fd, "-|", git_cmd(), 'for-each-ref',
3024             '--format=%(committer)',
3025             '--sort=-committerdate',
3026             '--count=1',
3027             'refs/heads') or return;
3028        my $most_recent = <$fd>;
3029        close $fd or return;
3030        if (defined $most_recent &&
3031            $most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
3032                my $timestamp = $1;
3033                my $age = time - $timestamp;
3034                return ($age, age_string($age));
3035        }
3036        return (undef, undef);
3037}
3038
3039# Implementation note: when a single remote is wanted, we cannot use 'git
3040# remote show -n' because that command always work (assuming it's a remote URL
3041# if it's not defined), and we cannot use 'git remote show' because that would
3042# try to make a network roundtrip. So the only way to find if that particular
3043# remote is defined is to walk the list provided by 'git remote -v' and stop if
3044# and when we find what we want.
3045sub git_get_remotes_list {
3046        my $wanted = shift;
3047        my %remotes = ();
3048
3049        open my $fd, '-|' , git_cmd(), 'remote', '-v';
3050        return unless $fd;
3051        while (my $remote = <$fd>) {
3052                chomp $remote;
3053                $remote =~ s!\t(.*?)\s+\((\w+)\)$!!;
3054                next if $wanted and not $remote eq $wanted;
3055                my ($url, $key) = ($1, $2);
3056
3057                $remotes{$remote} ||= { 'heads' => () };
3058                $remotes{$remote}{$key} = $url;
3059        }
3060        close $fd or return;
3061        return wantarray ? %remotes : \%remotes;
3062}
3063
3064# Takes a hash of remotes as first parameter and fills it by adding the
3065# available remote heads for each of the indicated remotes.
3066sub fill_remote_heads {
3067        my $remotes = shift;
3068        my @heads = map { "remotes/$_" } keys %$remotes;
3069        my @remoteheads = git_get_heads_list(undef, @heads);
3070        foreach my $remote (keys %$remotes) {
3071                $remotes->{$remote}{'heads'} = [ grep {
3072                        $_->{'name'} =~ s!^$remote/!!
3073                        } @remoteheads ];
3074        }
3075}
3076
3077sub git_get_references {
3078        my $type = shift || "";
3079        my %refs;
3080        # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
3081        # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
3082        open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
3083                ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
3084                or return;
3085
3086        while (my $line = <$fd>) {
3087                chomp $line;
3088                if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type.*)$!) {
3089                        if (defined $refs{$1}) {
3090                                push @{$refs{$1}}, $2;
3091                        } else {
3092                                $refs{$1} = [ $2 ];
3093                        }
3094                }
3095        }
3096        close $fd or return;
3097        return \%refs;
3098}
3099
3100sub git_get_rev_name_tags {
3101        my $hash = shift || return undef;
3102
3103        open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
3104                or return;
3105        my $name_rev = <$fd>;
3106        close $fd;
3107
3108        if ($name_rev =~ m|^$hash tags/(.*)$|) {
3109                return $1;
3110        } else {
3111                # catches also '$hash undefined' output
3112                return undef;
3113        }
3114}
3115
3116## ----------------------------------------------------------------------
3117## parse to hash functions
3118
3119sub parse_date {
3120        my $epoch = shift;
3121        my $tz = shift || "-0000";
3122
3123        my %date;
3124        my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
3125        my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
3126        my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
3127        $date{'hour'} = $hour;
3128        $date{'minute'} = $min;
3129        $date{'mday'} = $mday;
3130        $date{'day'} = $days[$wday];
3131        $date{'month'} = $months[$mon];
3132        $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
3133                             $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
3134        $date{'mday-time'} = sprintf "%d %s %02d:%02d",
3135                             $mday, $months[$mon], $hour ,$min;
3136        $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
3137                             1900+$year, 1+$mon, $mday, $hour ,$min, $sec;
3138
3139        my ($tz_sign, $tz_hour, $tz_min) =
3140                ($tz =~ m/^([-+])(\d\d)(\d\d)$/);
3141        $tz_sign = ($tz_sign eq '-' ? -1 : +1);
3142        my $local = $epoch + $tz_sign*((($tz_hour*60) + $tz_min)*60);
3143        ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
3144        $date{'hour_local'} = $hour;
3145        $date{'minute_local'} = $min;
3146        $date{'tz_local'} = $tz;
3147        $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
3148                                  1900+$year, $mon+1, $mday,
3149                                  $hour, $min, $sec, $tz);
3150        return %date;
3151}
3152
3153sub parse_tag {
3154        my $tag_id = shift;
3155        my %tag;
3156        my @comment;
3157
3158        open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
3159        $tag{'id'} = $tag_id;
3160        while (my $line = <$fd>) {
3161                chomp $line;
3162                if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
3163                        $tag{'object'} = $1;
3164                } elsif ($line =~ m/^type (.+)$/) {
3165                        $tag{'type'} = $1;
3166                } elsif ($line =~ m/^tag (.+)$/) {
3167                        $tag{'name'} = $1;
3168                } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
3169                        $tag{'author'} = $1;
3170                        $tag{'author_epoch'} = $2;
3171                        $tag{'author_tz'} = $3;
3172                        if ($tag{'author'} =~ m/^([^<]+) <([^>]*)>/) {
3173                                $tag{'author_name'}  = $1;
3174                                $tag{'author_email'} = $2;
3175                        } else {
3176                                $tag{'author_name'} = $tag{'author'};
3177                        }
3178                } elsif ($line =~ m/--BEGIN/) {
3179                        push @comment, $line;
3180                        last;
3181                } elsif ($line eq "") {
3182                        last;
3183                }
3184        }
3185        push @comment, <$fd>;
3186        $tag{'comment'} = \@comment;
3187        close $fd or return;
3188        if (!defined $tag{'name'}) {
3189                return
3190        };
3191        return %tag
3192}
3193
3194sub parse_commit_text {
3195        my ($commit_text, $withparents) = @_;
3196        my @commit_lines = split '\n', $commit_text;
3197        my %co;
3198
3199        pop @commit_lines; # Remove '\0'
3200
3201        if (! @commit_lines) {
3202                return;
3203        }
3204
3205        my $header = shift @commit_lines;
3206        if ($header !~ m/^[0-9a-fA-F]{40}/) {
3207                return;
3208        }
3209        ($co{'id'}, my @parents) = split ' ', $header;
3210        while (my $line = shift @commit_lines) {
3211                last if $line eq "\n";
3212                if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
3213                        $co{'tree'} = $1;
3214                } elsif ((!defined $withparents) && ($line =~ m/^parent ([0-9a-fA-F]{40})$/)) {
3215                        push @parents, $1;
3216                } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
3217                        $co{'author'} = to_utf8($1);
3218                        $co{'author_epoch'} = $2;
3219                        $co{'author_tz'} = $3;
3220                        if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
3221                                $co{'author_name'}  = $1;
3222                                $co{'author_email'} = $2;
3223                        } else {
3224                                $co{'author_name'} = $co{'author'};
3225                        }
3226                } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
3227                        $co{'committer'} = to_utf8($1);
3228                        $co{'committer_epoch'} = $2;
3229                        $co{'committer_tz'} = $3;
3230                        if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
3231                                $co{'committer_name'}  = $1;
3232                                $co{'committer_email'} = $2;
3233                        } else {
3234                                $co{'committer_name'} = $co{'committer'};
3235                        }
3236                }
3237        }
3238        if (!defined $co{'tree'}) {
3239                return;
3240        };
3241        $co{'parents'} = \@parents;
3242        $co{'parent'} = $parents[0];
3243
3244        foreach my $title (@commit_lines) {
3245                $title =~ s/^    //;
3246                if ($title ne "") {
3247                        $co{'title'} = chop_str($title, 80, 5);
3248                        # remove leading stuff of merges to make the interesting part visible
3249                        if (length($title) > 50) {
3250                                $title =~ s/^Automatic //;
3251                                $title =~ s/^merge (of|with) /Merge ... /i;
3252                                if (length($title) > 50) {
3253                                        $title =~ s/(http|rsync):\/\///;
3254                                }
3255                                if (length($title) > 50) {
3256                                        $title =~ s/(master|www|rsync)\.//;
3257                                }
3258                                if (length($title) > 50) {
3259                                        $title =~ s/kernel.org:?//;
3260                                }
3261                                if (length($title) > 50) {
3262                                        $title =~ s/\/pub\/scm//;
3263                                }
3264                        }
3265                        $co{'title_short'} = chop_str($title, 50, 5);
3266                        last;
3267                }
3268        }
3269        if (! defined $co{'title'} || $co{'title'} eq "") {
3270                $co{'title'} = $co{'title_short'} = '(no commit message)';
3271        }
3272        # remove added spaces
3273        foreach my $line (@commit_lines) {
3274                $line =~ s/^    //;
3275        }
3276        $co{'comment'} = \@commit_lines;
3277
3278        my $age = time - $co{'committer_epoch'};
3279        $co{'age'} = $age;
3280        $co{'age_string'} = age_string($age);
3281        my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
3282        if ($age > 60*60*24*7*2) {
3283                $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
3284                $co{'age_string_age'} = $co{'age_string'};
3285        } else {
3286                $co{'age_string_date'} = $co{'age_string'};
3287                $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
3288        }
3289        return %co;
3290}
3291
3292sub parse_commit {
3293        my ($commit_id) = @_;
3294        my %co;
3295
3296        local $/ = "\0";
3297
3298        open my $fd, "-|", git_cmd(), "rev-list",
3299                "--parents",
3300                "--header",
3301                "--max-count=1",
3302                $commit_id,
3303                "--",
3304                or die_error(500, "Open git-rev-list failed");
3305        %co = parse_commit_text(<$fd>, 1);
3306        close $fd;
3307
3308        return %co;
3309}
3310
3311sub parse_commits {
3312        my ($commit_id, $maxcount, $skip, $filename, @args) = @_;
3313        my @cos;
3314
3315        $maxcount ||= 1;
3316        $skip ||= 0;
3317
3318        local $/ = "\0";
3319
3320        open my $fd, "-|", git_cmd(), "rev-list",
3321                "--header",
3322                @args,
3323                ("--max-count=" . $maxcount),
3324                ("--skip=" . $skip),
3325                @extra_options,
3326                $commit_id,
3327                "--",
3328                ($filename ? ($filename) : ())
3329                or die_error(500, "Open git-rev-list failed");
3330        while (my $line = <$fd>) {
3331                my %co = parse_commit_text($line);
3332                push @cos, \%co;
3333        }
3334        close $fd;
3335
3336        return wantarray ? @cos : \@cos;
3337}
3338
3339# parse line of git-diff-tree "raw" output
3340sub parse_difftree_raw_line {
3341        my $line = shift;
3342        my %res;
3343
3344        # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
3345        # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
3346        if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
3347                $res{'from_mode'} = $1;
3348                $res{'to_mode'} = $2;
3349                $res{'from_id'} = $3;
3350                $res{'to_id'} = $4;
3351                $res{'status'} = $5;
3352                $res{'similarity'} = $6;
3353                if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
3354                        ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
3355                } else {
3356                        $res{'from_file'} = $res{'to_file'} = $res{'file'} = unquote($7);
3357                }
3358        }
3359        # '::100755 100755 100755 60e79ca1b01bc8b057abe17ddab484699a7f5fdb 94067cc5f73388f33722d52ae02f44692bc07490 94067cc5f73388f33722d52ae02f44692bc07490 MR git-gui/git-gui.sh'
3360        # combined diff (for merge commit)
3361        elsif ($line =~ s/^(::+)((?:[0-7]{6} )+)((?:[0-9a-fA-F]{40} )+)([a-zA-Z]+)\t(.*)$//) {
3362                $res{'nparents'}  = length($1);
3363                $res{'from_mode'} = [ split(' ', $2) ];
3364                $res{'to_mode'} = pop @{$res{'from_mode'}};
3365                $res{'from_id'} = [ split(' ', $3) ];
3366                $res{'to_id'} = pop @{$res{'from_id'}};
3367                $res{'status'} = [ split('', $4) ];
3368                $res{'to_file'} = unquote($5);
3369        }
3370        # 'c512b523472485aef4fff9e57b229d9d243c967f'
3371        elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
3372                $res{'commit'} = $1;
3373        }
3374
3375        return wantarray ? %res : \%res;
3376}
3377
3378# wrapper: return parsed line of git-diff-tree "raw" output
3379# (the argument might be raw line, or parsed info)
3380sub parsed_difftree_line {
3381        my $line_or_ref = shift;
3382
3383        if (ref($line_or_ref) eq "HASH") {
3384                # pre-parsed (or generated by hand)
3385                return $line_or_ref;
3386        } else {
3387                return parse_difftree_raw_line($line_or_ref);
3388        }
3389}
3390
3391# parse line of git-ls-tree output
3392sub parse_ls_tree_line {
3393        my $line = shift;
3394        my %opts = @_;
3395        my %res;
3396
3397        if ($opts{'-l'}) {
3398                #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa   16717  panic.c'
3399                $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40}) +(-|[0-9]+)\t(.+)$/s;
3400
3401                $res{'mode'} = $1;
3402                $res{'type'} = $2;
3403                $res{'hash'} = $3;
3404                $res{'size'} = $4;
3405                if ($opts{'-z'}) {
3406                        $res{'name'} = $5;
3407                } else {
3408                        $res{'name'} = unquote($5);
3409                }
3410        } else {
3411                #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
3412                $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
3413
3414                $res{'mode'} = $1;
3415                $res{'type'} = $2;
3416                $res{'hash'} = $3;
3417                if ($opts{'-z'}) {
3418                        $res{'name'} = $4;
3419                } else {
3420                        $res{'name'} = unquote($4);
3421                }
3422        }
3423
3424        return wantarray ? %res : \%res;
3425}
3426
3427# generates _two_ hashes, references to which are passed as 2 and 3 argument
3428sub parse_from_to_diffinfo {
3429        my ($diffinfo, $from, $to, @parents) = @_;
3430
3431        if ($diffinfo->{'nparents'}) {
3432                # combined diff
3433                $from->{'file'} = [];
3434                $from->{'href'} = [];
3435                fill_from_file_info($diffinfo, @parents)
3436                        unless exists $diffinfo->{'from_file'};
3437                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
3438                        $from->{'file'}[$i] =
3439                                defined $diffinfo->{'from_file'}[$i] ?
3440                                        $diffinfo->{'from_file'}[$i] :
3441                                        $diffinfo->{'to_file'};
3442                        if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
3443                                $from->{'href'}[$i] = href(action=>"blob",
3444                                                           hash_base=>$parents[$i],
3445                                                           hash=>$diffinfo->{'from_id'}[$i],
3446                                                           file_name=>$from->{'file'}[$i]);
3447                        } else {
3448                                $from->{'href'}[$i] = undef;
3449                        }
3450                }
3451        } else {
3452                # ordinary (not combined) diff
3453                $from->{'file'} = $diffinfo->{'from_file'};
3454                if ($diffinfo->{'status'} ne "A") { # not new (added) file
3455                        $from->{'href'} = href(action=>"blob", hash_base=>$hash_parent,
3456                                               hash=>$diffinfo->{'from_id'},
3457                                               file_name=>$from->{'file'});
3458                } else {
3459                        delete $from->{'href'};
3460                }
3461        }
3462
3463        $to->{'file'} = $diffinfo->{'to_file'};
3464        if (!is_deleted($diffinfo)) { # file exists in result
3465                $to->{'href'} = href(action=>"blob", hash_base=>$hash,
3466                                     hash=>$diffinfo->{'to_id'},
3467                                     file_name=>$to->{'file'});
3468        } else {
3469                delete $to->{'href'};
3470        }
3471}
3472
3473## ......................................................................
3474## parse to array of hashes functions
3475
3476sub git_get_heads_list {
3477        my ($limit, @classes) = @_;
3478        @classes = ('heads') unless @classes;
3479        my @patterns = map { "refs/$_" } @classes;
3480        my @headslist;
3481
3482        open my $fd, '-|', git_cmd(), 'for-each-ref',
3483                ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
3484                '--format=%(objectname) %(refname) %(subject)%00%(committer)',
3485                @patterns
3486                or return;
3487        while (my $line = <$fd>) {
3488                my %ref_item;
3489
3490                chomp $line;
3491                my ($refinfo, $committerinfo) = split(/\0/, $line);
3492                my ($hash, $name, $title) = split(' ', $refinfo, 3);
3493                my ($committer, $epoch, $tz) =
3494                        ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
3495                $ref_item{'fullname'}  = $name;
3496                $name =~ s!^refs/(?:head|remote)s/!!;
3497
3498                $ref_item{'name'}  = $name;
3499                $ref_item{'id'}    = $hash;
3500                $ref_item{'title'} = $title || '(no commit message)';
3501                $ref_item{'epoch'} = $epoch;
3502                if ($epoch) {
3503                        $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
3504                } else {
3505                        $ref_item{'age'} = "unknown";
3506                }
3507
3508                push @headslist, \%ref_item;
3509        }
3510        close $fd;
3511
3512        return wantarray ? @headslist : \@headslist;
3513}
3514
3515sub git_get_tags_list {
3516        my $limit = shift;
3517        my @tagslist;
3518
3519        open my $fd, '-|', git_cmd(), 'for-each-ref',
3520                ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
3521                '--format=%(objectname) %(objecttype) %(refname) '.
3522                '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
3523                'refs/tags'
3524                or return;
3525        while (my $line = <$fd>) {
3526                my %ref_item;
3527
3528                chomp $line;
3529                my ($refinfo, $creatorinfo) = split(/\0/, $line);
3530                my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
3531                my ($creator, $epoch, $tz) =
3532                        ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
3533                $ref_item{'fullname'} = $name;
3534                $name =~ s!^refs/tags/!!;
3535
3536                $ref_item{'type'} = $type;
3537                $ref_item{'id'} = $id;
3538                $ref_item{'name'} = $name;
3539                if ($type eq "tag") {
3540                        $ref_item{'subject'} = $title;
3541                        $ref_item{'reftype'} = $reftype;
3542                        $ref_item{'refid'}   = $refid;
3543                } else {
3544                        $ref_item{'reftype'} = $type;
3545                        $ref_item{'refid'}   = $id;
3546                }
3547
3548                if ($type eq "tag" || $type eq "commit") {
3549                        $ref_item{'epoch'} = $epoch;
3550                        if ($epoch) {
3551                                $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
3552                        } else {
3553                                $ref_item{'age'} = "unknown";
3554                        }
3555                }
3556
3557                push @tagslist, \%ref_item;
3558        }
3559        close $fd;
3560
3561        return wantarray ? @tagslist : \@tagslist;
3562}
3563
3564## ----------------------------------------------------------------------
3565## filesystem-related functions
3566
3567sub get_file_owner {
3568        my $path = shift;
3569
3570        my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
3571        my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
3572        if (!defined $gcos) {
3573                return undef;
3574        }
3575        my $owner = $gcos;
3576        $owner =~ s/[,;].*$//;
3577        return to_utf8($owner);
3578}
3579
3580# assume that file exists
3581sub insert_file {
3582        my $filename = shift;
3583
3584        open my $fd, '<', $filename;
3585        print map { to_utf8($_) } <$fd>;
3586        close $fd;
3587}
3588
3589## ......................................................................
3590## mimetype related functions
3591
3592sub mimetype_guess_file {
3593        my $filename = shift;
3594        my $mimemap = shift;
3595        -r $mimemap or return undef;
3596
3597        my %mimemap;
3598        open(my $mh, '<', $mimemap) or return undef;
3599        while (<$mh>) {
3600                next if m/^#/; # skip comments
3601                my ($mimetype, @exts) = split(/\s+/);
3602                foreach my $ext (@exts) {
3603                        $mimemap{$ext} = $mimetype;
3604                }
3605        }
3606        close($mh);
3607
3608        $filename =~ /\.([^.]*)$/;
3609        return $mimemap{$1};
3610}
3611
3612sub mimetype_guess {
3613        my $filename = shift;
3614        my $mime;
3615        $filename =~ /\./ or return undef;
3616
3617        if ($mimetypes_file) {
3618                my $file = $mimetypes_file;
3619                if ($file !~ m!^/!) { # if it is relative path
3620                        # it is relative to project
3621                        $file = "$projectroot/$project/$file";
3622                }
3623                $mime = mimetype_guess_file($filename, $file);
3624        }
3625        $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
3626        return $mime;
3627}
3628
3629sub blob_mimetype {
3630        my $fd = shift;
3631        my $filename = shift;
3632
3633        if ($filename) {
3634                my $mime = mimetype_guess($filename);
3635                $mime and return $mime;
3636        }
3637
3638        # just in case
3639        return $default_blob_plain_mimetype unless $fd;
3640
3641        if (-T $fd) {
3642                return 'text/plain';
3643        } elsif (! $filename) {
3644                return 'application/octet-stream';
3645        } elsif ($filename =~ m/\.png$/i) {
3646                return 'image/png';
3647        } elsif ($filename =~ m/\.gif$/i) {
3648                return 'image/gif';
3649        } elsif ($filename =~ m/\.jpe?g$/i) {
3650                return 'image/jpeg';
3651        } else {
3652                return 'application/octet-stream';
3653        }
3654}
3655
3656sub blob_contenttype {
3657        my ($fd, $file_name, $type) = @_;
3658
3659        $type ||= blob_mimetype($fd, $file_name);
3660        if ($type eq 'text/plain' && defined $default_text_plain_charset) {
3661                $type .= "; charset=$default_text_plain_charset";
3662        }
3663
3664        return $type;
3665}
3666
3667# guess file syntax for syntax highlighting; return undef if no highlighting
3668# the name of syntax can (in the future) depend on syntax highlighter used
3669sub guess_file_syntax {
3670        my ($highlight, $mimetype, $file_name) = @_;
3671        return undef unless ($highlight && defined $file_name);
3672        my $basename = basename($file_name, '.in');
3673        return $highlight_basename{$basename}
3674                if exists $highlight_basename{$basename};
3675
3676        $basename =~ /\.([^.]*)$/;
3677        my $ext = $1 or return undef;
3678        return $highlight_ext{$ext}
3679                if exists $highlight_ext{$ext};
3680
3681        return undef;
3682}
3683
3684# run highlighter and return FD of its output,
3685# or return original FD if no highlighting
3686sub run_highlighter {
3687        my ($fd, $highlight, $syntax) = @_;
3688        return $fd unless ($highlight && defined $syntax);
3689
3690        close $fd;
3691        open $fd, quote_command(git_cmd(), "cat-file", "blob", $hash)." | ".
3692                  quote_command($highlight_bin).
3693                  " --replace-tabs=8 --fragment --syntax $syntax |"
3694                or die_error(500, "Couldn't open file or run syntax highlighter");
3695        return $fd;
3696}
3697
3698## ======================================================================
3699## functions printing HTML: header, footer, error page
3700
3701sub get_page_title {
3702        my $title = to_utf8($site_name);
3703
3704        return $title unless (defined $project);
3705        $title .= " - " . to_utf8($project);
3706
3707        return $title unless (defined $action);
3708        $title .= "/$action"; # $action is US-ASCII (7bit ASCII)
3709
3710        return $title unless (defined $file_name);
3711        $title .= " - " . esc_path($file_name);
3712        if ($action eq "tree" && $file_name !~ m|/$|) {
3713                $title .= "/";
3714        }
3715
3716        return $title;
3717}
3718
3719sub get_content_type_html {
3720        # require explicit support from the UA if we are to send the page as
3721        # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
3722        # we have to do this because MSIE sometimes globs '*/*', pretending to
3723        # support xhtml+xml but choking when it gets what it asked for.
3724        if (defined $cgi->http('HTTP_ACCEPT') &&
3725            $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
3726            $cgi->Accept('application/xhtml+xml') != 0) {
3727                return 'application/xhtml+xml';
3728        } else {
3729                return 'text/html';
3730        }
3731}
3732
3733sub print_feed_meta {
3734        if (defined $project) {
3735                my %href_params = get_feed_info();
3736                if (!exists $href_params{'-title'}) {
3737                        $href_params{'-title'} = 'log';
3738                }
3739
3740                foreach my $format (qw(RSS Atom)) {
3741                        my $type = lc($format);
3742                        my %link_attr = (
3743                                '-rel' => 'alternate',
3744                                '-title' => esc_attr("$project - $href_params{'-title'} - $format feed"),
3745                                '-type' => "application/$type+xml"
3746                        );
3747
3748                        $href_params{'action'} = $type;
3749                        $link_attr{'-href'} = href(%href_params);
3750                        print "<link ".
3751                              "rel=\"$link_attr{'-rel'}\" ".
3752                              "title=\"$link_attr{'-title'}\" ".
3753                              "href=\"$link_attr{'-href'}\" ".
3754                              "type=\"$link_attr{'-type'}\" ".
3755                              "/>\n";
3756
3757                        $href_params{'extra_options'} = '--no-merges';
3758                        $link_attr{'-href'} = href(%href_params);
3759                        $link_attr{'-title'} .= ' (no merges)';
3760                        print "<link ".
3761                              "rel=\"$link_attr{'-rel'}\" ".
3762                              "title=\"$link_attr{'-title'}\" ".
3763                              "href=\"$link_attr{'-href'}\" ".
3764                              "type=\"$link_attr{'-type'}\" ".
3765                              "/>\n";
3766                }
3767
3768        } else {
3769                printf('<link rel="alternate" title="%s projects list" '.
3770                       'href="%s" type="text/plain; charset=utf-8" />'."\n",
3771                       esc_attr($site_name), href(project=>undef, action=>"project_index"));
3772                printf('<link rel="alternate" title="%s projects feeds" '.
3773                       'href="%s" type="text/x-opml" />'."\n",
3774                       esc_attr($site_name), href(project=>undef, action=>"opml"));
3775        }
3776}
3777
3778sub print_header_links {
3779        my $status = shift;
3780
3781        # print out each stylesheet that exist, providing backwards capability
3782        # for those people who defined $stylesheet in a config file
3783        if (defined $stylesheet) {
3784                print '<link rel="stylesheet" type="text/css" href="'.esc_url($stylesheet).'"/>'."\n";
3785        } else {
3786                foreach my $stylesheet (@stylesheets) {
3787                        next unless $stylesheet;
3788                        print '<link rel="stylesheet" type="text/css" href="'.esc_url($stylesheet).'"/>'."\n";
3789                }
3790        }
3791        print_feed_meta()
3792                if ($status eq '200 OK');
3793        if (defined $favicon) {
3794                print qq(<link rel="shortcut icon" href=").esc_url($favicon).qq(" type="image/png" />\n);
3795        }
3796}
3797
3798sub print_nav_breadcrumbs {
3799        my %opts = @_;
3800
3801        print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
3802        if (defined $project) {
3803                print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
3804                if (defined $action) {
3805                        my $action_print = $action ;
3806                        if (defined $opts{-action_extra}) {
3807                                $action_print = $cgi->a({-href => href(action=>$action)},
3808                                        $action);
3809                        }
3810                        print " / $action_print";
3811                }
3812                if (defined $opts{-action_extra}) {
3813                        print " / $opts{-action_extra}";
3814                }
3815                print "\n";
3816        }
3817}
3818
3819sub print_search_form {
3820        if (!defined $searchtext) {
3821                $searchtext = "";
3822        }
3823        my $search_hash;
3824        if (defined $hash_base) {
3825                $search_hash = $hash_base;
3826        } elsif (defined $hash) {
3827                $search_hash = $hash;
3828        } else {
3829                $search_hash = "HEAD";
3830        }
3831        my $action = $my_uri;
3832        my $use_pathinfo = gitweb_check_feature('pathinfo');
3833        if ($use_pathinfo) {
3834                $action .= "/".esc_url($project);
3835        }
3836        print $cgi->startform(-method => "get", -action => $action) .
3837              "<div class=\"search\">\n" .
3838              (!$use_pathinfo &&
3839              $cgi->input({-name=>"p", -value=>$project, -type=>"hidden"}) . "\n") .
3840              $cgi->input({-name=>"a", -value=>"search", -type=>"hidden"}) . "\n" .
3841              $cgi->input({-name=>"h", -value=>$search_hash, -type=>"hidden"}) . "\n" .
3842              $cgi->popup_menu(-name => 'st', -default => 'commit',
3843                               -values => ['commit', 'grep', 'author', 'committer', 'pickaxe']) .
3844              $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
3845              " search:\n",
3846              $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
3847              "<span title=\"Extended regular expression\">" .
3848              $cgi->checkbox(-name => 'sr', -value => 1, -label => 're',
3849                             -checked => $search_use_regexp) .
3850              "</span>" .
3851              "</div>" .
3852              $cgi->end_form() . "\n";
3853}
3854
3855sub git_header_html {
3856        my $status = shift || "200 OK";
3857        my $expires = shift;
3858        my %opts = @_;
3859
3860        my $title = get_page_title();
3861        my $content_type = get_content_type_html();
3862        print $cgi->header(-type=>$content_type, -charset => 'utf-8',
3863                           -status=> $status, -expires => $expires)
3864                unless ($opts{'-no_http_header'});
3865        my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
3866        print <<EOF;
3867<?xml version="1.0" encoding="utf-8"?>
3868<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
3869<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
3870<!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
3871<!-- git core binaries version $git_version -->
3872<head>
3873<meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
3874<meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
3875<meta name="robots" content="index, nofollow"/>
3876<title>$title</title>
3877EOF
3878        # the stylesheet, favicon etc urls won't work correctly with path_info
3879        # unless we set the appropriate base URL
3880        if ($ENV{'PATH_INFO'}) {
3881                print "<base href=\"".esc_url($base_url)."\" />\n";
3882        }
3883        print_header_links($status);
3884
3885        if (defined $site_html_head_string) {
3886                print to_utf8($site_html_head_string);
3887        }
3888
3889        print "</head>\n" .
3890              "<body>\n";
3891
3892        if (defined $site_header && -f $site_header) {
3893                insert_file($site_header);
3894        }
3895
3896        print "<div class=\"page_header\">\n";
3897        if (defined $logo) {
3898                print $cgi->a({-href => esc_url($logo_url),
3899                               -title => $logo_label},
3900                              $cgi->img({-src => esc_url($logo),
3901                                         -width => 72, -height => 27,
3902                                         -alt => "git",
3903                                         -class => "logo"}));
3904        }
3905        print_nav_breadcrumbs(%opts);
3906        print "</div>\n";
3907
3908        my $have_search = gitweb_check_feature('search');
3909        if (defined $project && $have_search) {
3910                print_search_form();
3911        }
3912}
3913
3914sub git_footer_html {
3915        my $feed_class = 'rss_logo';
3916
3917        print "<div class=\"page_footer\">\n";
3918        if (defined $project) {
3919                my $descr = git_get_project_description($project);
3920                if (defined $descr) {
3921                        print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
3922                }
3923
3924                my %href_params = get_feed_info();
3925                if (!%href_params) {
3926                        $feed_class .= ' generic';
3927                }
3928                $href_params{'-title'} ||= 'log';
3929
3930                foreach my $format (qw(RSS Atom)) {
3931                        $href_params{'action'} = lc($format);
3932                        print $cgi->a({-href => href(%href_params),
3933                                      -title => "$href_params{'-title'} $format feed",
3934                                      -class => $feed_class}, $format)."\n";
3935                }
3936
3937        } else {
3938                print $cgi->a({-href => href(project=>undef, action=>"opml"),
3939                              -class => $feed_class}, "OPML") . " ";
3940                print $cgi->a({-href => href(project=>undef, action=>"project_index"),
3941                              -class => $feed_class}, "TXT") . "\n";
3942        }
3943        print "</div>\n"; # class="page_footer"
3944
3945        if (defined $t0 && gitweb_check_feature('timed')) {
3946                print "<div id=\"generating_info\">\n";
3947                print 'This page took '.
3948                      '<span id="generating_time" class="time_span">'.
3949                      tv_interval($t0, [ gettimeofday() ]).
3950                      ' seconds </span>'.
3951                      ' and '.
3952                      '<span id="generating_cmd">'.
3953                      $number_of_git_cmds.
3954                      '</span> git commands '.
3955                      " to generate.\n";
3956                print "</div>\n"; # class="page_footer"
3957        }
3958
3959        if (defined $site_footer && -f $site_footer) {
3960                insert_file($site_footer);
3961        }
3962
3963        print qq!<script type="text/javascript" src="!.esc_url($javascript).qq!"></script>\n!;
3964        if (defined $action &&
3965            $action eq 'blame_incremental') {
3966                print qq!<script type="text/javascript">\n!.
3967                      qq!startBlame("!. href(action=>"blame_data", -replay=>1) .qq!",\n!.
3968                      qq!           "!. href() .qq!");\n!.
3969                      qq!</script>\n!;
3970        } else {
3971                my ($jstimezone, $tz_cookie, $datetime_class) =
3972                        gitweb_get_feature('javascript-timezone');
3973
3974                print qq!<script type="text/javascript">\n!.
3975                      qq!window.onload = function () {\n!;
3976                if (gitweb_check_feature('javascript-actions')) {
3977                        print qq!       fixLinks();\n!;
3978                }
3979                if ($jstimezone && $tz_cookie && $datetime_class) {
3980                        print qq!       var tz_cookie = { name: '$tz_cookie', expires: 14, path: '/' };\n!. # in days
3981                              qq!       onloadTZSetup('$jstimezone', tz_cookie, '$datetime_class');\n!;
3982                }
3983                print qq!};\n!.
3984                      qq!</script>\n!;
3985        }
3986
3987        print "</body>\n" .
3988              "</html>";
3989}
3990
3991# die_error(<http_status_code>, <error_message>[, <detailed_html_description>])
3992# Example: die_error(404, 'Hash not found')
3993# By convention, use the following status codes (as defined in RFC 2616):
3994# 400: Invalid or missing CGI parameters, or
3995#      requested object exists but has wrong type.
3996# 403: Requested feature (like "pickaxe" or "snapshot") not enabled on
3997#      this server or project.
3998# 404: Requested object/revision/project doesn't exist.
3999# 500: The server isn't configured properly, or
4000#      an internal error occurred (e.g. failed assertions caused by bugs), or
4001#      an unknown error occurred (e.g. the git binary died unexpectedly).
4002# 503: The server is currently unavailable (because it is overloaded,
4003#      or down for maintenance).  Generally, this is a temporary state.
4004sub die_error {
4005        my $status = shift || 500;
4006        my $error = esc_html(shift) || "Internal Server Error";
4007        my $extra = shift;
4008        my %opts = @_;
4009
4010        my %http_responses = (
4011                400 => '400 Bad Request',
4012                403 => '403 Forbidden',
4013                404 => '404 Not Found',
4014                500 => '500 Internal Server Error',
4015                503 => '503 Service Unavailable',
4016        );
4017        git_header_html($http_responses{$status}, undef, %opts);
4018        print <<EOF;
4019<div class="page_body">
4020<br /><br />
4021$status - $error
4022<br />
4023EOF
4024        if (defined $extra) {
4025                print "<hr />\n" .
4026                      "$extra\n";
4027        }
4028        print "</div>\n";
4029
4030        git_footer_html();
4031        goto DONE_GITWEB
4032                unless ($opts{'-error_handler'});
4033}
4034
4035## ----------------------------------------------------------------------
4036## functions printing or outputting HTML: navigation
4037
4038sub git_print_page_nav {
4039        my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
4040        $extra = '' if !defined $extra; # pager or formats
4041
4042        my @navs = qw(summary shortlog log commit commitdiff tree);
4043        if ($suppress) {
4044                @navs = grep { $_ ne $suppress } @navs;
4045        }
4046
4047        my %arg = map { $_ => {action=>$_} } @navs;
4048        if (defined $head) {
4049                for (qw(commit commitdiff)) {
4050                        $arg{$_}{'hash'} = $head;
4051                }
4052                if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
4053                        for (qw(shortlog log)) {
4054                                $arg{$_}{'hash'} = $head;
4055                        }
4056                }
4057        }
4058
4059        $arg{'tree'}{'hash'} = $treehead if defined $treehead;
4060        $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
4061
4062        my @actions = gitweb_get_feature('actions');
4063        my %repl = (
4064                '%' => '%',
4065                'n' => $project,         # project name
4066                'f' => $git_dir,         # project path within filesystem
4067                'h' => $treehead || '',  # current hash ('h' parameter)
4068                'b' => $treebase || '',  # hash base ('hb' parameter)
4069        );
4070        while (@actions) {
4071                my ($label, $link, $pos) = splice(@actions,0,3);
4072                # insert
4073                @navs = map { $_ eq $pos ? ($_, $label) : $_ } @navs;
4074                # munch munch
4075                $link =~ s/%([%nfhb])/$repl{$1}/g;
4076                $arg{$label}{'_href'} = $link;
4077        }
4078
4079        print "<div class=\"page_nav\">\n" .
4080                (join " | ",
4081                 map { $_ eq $current ?
4082                       $_ : $cgi->a({-href => ($arg{$_}{_href} ? $arg{$_}{_href} : href(%{$arg{$_}}))}, "$_")
4083                 } @navs);
4084        print "<br/>\n$extra<br/>\n" .
4085              "</div>\n";
4086}
4087
4088# returns a submenu for the nagivation of the refs views (tags, heads,
4089# remotes) with the current view disabled and the remotes view only
4090# available if the feature is enabled
4091sub format_ref_views {
4092        my ($current) = @_;
4093        my @ref_views = qw{tags heads};
4094        push @ref_views, 'remotes' if gitweb_check_feature('remote_heads');
4095        return join " | ", map {
4096                $_ eq $current ? $_ :
4097                $cgi->a({-href => href(action=>$_)}, $_)
4098        } @ref_views
4099}
4100
4101sub format_paging_nav {
4102        my ($action, $page, $has_next_link) = @_;
4103        my $paging_nav;
4104
4105
4106        if ($page > 0) {
4107                $paging_nav .=
4108                        $cgi->a({-href => href(-replay=>1, page=>undef)}, "first") .
4109                        " &sdot; " .
4110                        $cgi->a({-href => href(-replay=>1, page=>$page-1),
4111                                 -accesskey => "p", -title => "Alt-p"}, "prev");
4112        } else {
4113                $paging_nav .= "first &sdot; prev";
4114        }
4115
4116        if ($has_next_link) {
4117                $paging_nav .= " &sdot; " .
4118                        $cgi->a({-href => href(-replay=>1, page=>$page+1),
4119                                 -accesskey => "n", -title => "Alt-n"}, "next");
4120        } else {
4121                $paging_nav .= " &sdot; next";
4122        }
4123
4124        return $paging_nav;
4125}
4126
4127## ......................................................................
4128## functions printing or outputting HTML: div
4129
4130sub git_print_header_div {
4131        my ($action, $title, $hash, $hash_base) = @_;
4132        my %args = ();
4133
4134        $args{'action'} = $action;
4135        $args{'hash'} = $hash if $hash;
4136        $args{'hash_base'} = $hash_base if $hash_base;
4137
4138        print "<div class=\"header\">\n" .
4139              $cgi->a({-href => href(%args), -class => "title"},
4140              $title ? $title : $action) .
4141              "\n</div>\n";
4142}
4143
4144sub format_repo_url {
4145        my ($name, $url) = @_;
4146        return "<tr class=\"metadata_url\"><td>$name</td><td>$url</td></tr>\n";
4147}
4148
4149# Group output by placing it in a DIV element and adding a header.
4150# Options for start_div() can be provided by passing a hash reference as the
4151# first parameter to the function.
4152# Options to git_print_header_div() can be provided by passing an array
4153# reference. This must follow the options to start_div if they are present.
4154# The content can be a scalar, which is output as-is, a scalar reference, which
4155# is output after html escaping, an IO handle passed either as *handle or
4156# *handle{IO}, or a function reference. In the latter case all following
4157# parameters will be taken as argument to the content function call.
4158sub git_print_section {
4159        my ($div_args, $header_args, $content);
4160        my $arg = shift;
4161        if (ref($arg) eq 'HASH') {
4162                $div_args = $arg;
4163                $arg = shift;
4164        }
4165        if (ref($arg) eq 'ARRAY') {
4166                $header_args = $arg;
4167                $arg = shift;
4168        }
4169        $content = $arg;
4170
4171        print $cgi->start_div($div_args);
4172        git_print_header_div(@$header_args);
4173
4174        if (ref($content) eq 'CODE') {
4175                $content->(@_);
4176        } elsif (ref($content) eq 'SCALAR') {
4177                print esc_html($$content);
4178        } elsif (ref($content) eq 'GLOB' or ref($content) eq 'IO::Handle') {
4179                print <$content>;
4180        } elsif (!ref($content) && defined($content)) {
4181                print $content;
4182        }
4183
4184        print $cgi->end_div;
4185}
4186
4187sub format_timestamp_html {
4188        my $date = shift;
4189        my $strtime = $date->{'rfc2822'};
4190
4191        my (undef, undef, $datetime_class) =
4192                gitweb_get_feature('javascript-timezone');
4193        if ($datetime_class) {
4194                $strtime = qq!<span class="$datetime_class">$strtime</span>!;
4195        }
4196
4197        my $localtime_format = '(%02d:%02d %s)';
4198        if ($date->{'hour_local'} < 6) {
4199                $localtime_format = '(<span class="atnight">%02d:%02d</span> %s)';
4200        }
4201        $strtime .= ' ' .
4202                    sprintf($localtime_format,
4203                            $date->{'hour_local'}, $date->{'minute_local'}, $date->{'tz_local'});
4204
4205        return $strtime;
4206}
4207
4208# Outputs the author name and date in long form
4209sub git_print_authorship {
4210        my $co = shift;
4211        my %opts = @_;
4212        my $tag = $opts{-tag} || 'div';
4213        my $author = $co->{'author_name'};
4214
4215        my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
4216        print "<$tag class=\"author_date\">" .
4217              format_search_author($author, "author", esc_html($author)) .
4218              " [".format_timestamp_html(\%ad)."]".
4219              git_get_avatar($co->{'author_email'}, -pad_before => 1) .
4220              "</$tag>\n";
4221}
4222
4223# Outputs table rows containing the full author or committer information,
4224# in the format expected for 'commit' view (& similar).
4225# Parameters are a commit hash reference, followed by the list of people
4226# to output information for. If the list is empty it defaults to both
4227# author and committer.
4228sub git_print_authorship_rows {
4229        my $co = shift;
4230        # too bad we can't use @people = @_ || ('author', 'committer')
4231        my @people = @_;
4232        @people = ('author', 'committer') unless @people;
4233        foreach my $who (@people) {
4234                my %wd = parse_date($co->{"${who}_epoch"}, $co->{"${who}_tz"});
4235                print "<tr><td>$who</td><td>" .
4236                      format_search_author($co->{"${who}_name"}, $who,
4237                                           esc_html($co->{"${who}_name"})) . " " .
4238                      format_search_author($co->{"${who}_email"}, $who,
4239                                           esc_html("<" . $co->{"${who}_email"} . ">")) .
4240                      "</td><td rowspan=\"2\">" .
4241                      git_get_avatar($co->{"${who}_email"}, -size => 'double') .
4242                      "</td></tr>\n" .
4243                      "<tr>" .
4244                      "<td></td><td>" .
4245                      format_timestamp_html(\%wd) .
4246                      "</td>" .
4247                      "</tr>\n";
4248        }
4249}
4250
4251sub git_print_page_path {
4252        my $name = shift;
4253        my $type = shift;
4254        my $hb = shift;
4255
4256
4257        print "<div class=\"page_path\">";
4258        print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
4259                      -title => 'tree root'}, to_utf8("[$project]"));
4260        print " / ";
4261        if (defined $name) {
4262                my @dirname = split '/', $name;
4263                my $basename = pop @dirname;
4264                my $fullname = '';
4265
4266                foreach my $dir (@dirname) {
4267                        $fullname .= ($fullname ? '/' : '') . $dir;
4268                        print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
4269                                                     hash_base=>$hb),
4270                                      -title => $fullname}, esc_path($dir));
4271                        print " / ";
4272                }
4273                if (defined $type && $type eq 'blob') {
4274                        print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
4275                                                     hash_base=>$hb),
4276                                      -title => $name}, esc_path($basename));
4277                } elsif (defined $type && $type eq 'tree') {
4278                        print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
4279                                                     hash_base=>$hb),
4280                                      -title => $name}, esc_path($basename));
4281                        print " / ";
4282                } else {
4283                        print esc_path($basename);
4284                }
4285        }
4286        print "<br/></div>\n";
4287}
4288
4289sub git_print_log {
4290        my $log = shift;
4291        my %opts = @_;
4292
4293        if ($opts{'-remove_title'}) {
4294                # remove title, i.e. first line of log
4295                shift @$log;
4296        }
4297        # remove leading empty lines
4298        while (defined $log->[0] && $log->[0] eq "") {
4299                shift @$log;
4300        }
4301
4302        # print log
4303        my $signoff = 0;
4304        my $empty = 0;
4305        foreach my $line (@$log) {
4306                if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
4307                        $signoff = 1;
4308                        $empty = 0;
4309                        if (! $opts{'-remove_signoff'}) {
4310                                print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
4311                                next;
4312                        } else {
4313                                # remove signoff lines
4314                                next;
4315                        }
4316                } else {
4317                        $signoff = 0;
4318                }
4319
4320                # print only one empty line
4321                # do not print empty line after signoff
4322                if ($line eq "") {
4323                        next if ($empty || $signoff);
4324                        $empty = 1;
4325                } else {
4326                        $empty = 0;
4327                }
4328
4329                print format_log_line_html($line) . "<br/>\n";
4330        }
4331
4332        if ($opts{'-final_empty_line'}) {
4333                # end with single empty line
4334                print "<br/>\n" unless $empty;
4335        }
4336}
4337
4338# return link target (what link points to)
4339sub git_get_link_target {
4340        my $hash = shift;
4341        my $link_target;
4342
4343        # read link
4344        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
4345                or return;
4346        {
4347                local $/ = undef;
4348                $link_target = <$fd>;
4349        }
4350        close $fd
4351                or return;
4352
4353        return $link_target;
4354}
4355
4356# given link target, and the directory (basedir) the link is in,
4357# return target of link relative to top directory (top tree);
4358# return undef if it is not possible (including absolute links).
4359sub normalize_link_target {
4360        my ($link_target, $basedir) = @_;
4361
4362        # absolute symlinks (beginning with '/') cannot be normalized
4363        return if (substr($link_target, 0, 1) eq '/');
4364
4365        # normalize link target to path from top (root) tree (dir)
4366        my $path;
4367        if ($basedir) {
4368                $path = $basedir . '/' . $link_target;
4369        } else {
4370                # we are in top (root) tree (dir)
4371                $path = $link_target;
4372        }
4373
4374        # remove //, /./, and /../
4375        my @path_parts;
4376        foreach my $part (split('/', $path)) {
4377                # discard '.' and ''
4378                next if (!$part || $part eq '.');
4379                # handle '..'
4380                if ($part eq '..') {
4381                        if (@path_parts) {
4382                                pop @path_parts;
4383                        } else {
4384                                # link leads outside repository (outside top dir)
4385                                return;
4386                        }
4387                } else {
4388                        push @path_parts, $part;
4389                }
4390        }
4391        $path = join('/', @path_parts);
4392
4393        return $path;
4394}
4395
4396# print tree entry (row of git_tree), but without encompassing <tr> element
4397sub git_print_tree_entry {
4398        my ($t, $basedir, $hash_base, $have_blame) = @_;
4399
4400        my %base_key = ();
4401        $base_key{'hash_base'} = $hash_base if defined $hash_base;
4402
4403        # The format of a table row is: mode list link.  Where mode is
4404        # the mode of the entry, list is the name of the entry, an href,
4405        # and link is the action links of the entry.
4406
4407        print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
4408        if (exists $t->{'size'}) {
4409                print "<td class=\"size\">$t->{'size'}</td>\n";
4410        }
4411        if ($t->{'type'} eq "blob") {
4412                print "<td class=\"list\">" .
4413                        $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
4414                                               file_name=>"$basedir$t->{'name'}", %base_key),
4415                                -class => "list"}, esc_path($t->{'name'}));
4416                if (S_ISLNK(oct $t->{'mode'})) {
4417                        my $link_target = git_get_link_target($t->{'hash'});
4418                        if ($link_target) {
4419                                my $norm_target = normalize_link_target($link_target, $basedir);
4420                                if (defined $norm_target) {
4421                                        print " -> " .
4422                                              $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
4423                                                                     file_name=>$norm_target),
4424                                                       -title => $norm_target}, esc_path($link_target));
4425                                } else {
4426                                        print " -> " . esc_path($link_target);
4427                                }
4428                        }
4429                }
4430                print "</td>\n";
4431                print "<td class=\"link\">";
4432                print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
4433                                             file_name=>"$basedir$t->{'name'}", %base_key)},
4434                              "blob");
4435                if ($have_blame) {
4436                        print " | " .
4437                              $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
4438                                                     file_name=>"$basedir$t->{'name'}", %base_key)},
4439                                      "blame");
4440                }
4441                if (defined $hash_base) {
4442                        print " | " .
4443                              $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
4444                                                     hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
4445                                      "history");
4446                }
4447                print " | " .
4448                        $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
4449                                               file_name=>"$basedir$t->{'name'}")},
4450                                "raw");
4451                print "</td>\n";
4452
4453        } elsif ($t->{'type'} eq "tree") {
4454                print "<td class=\"list\">";
4455                print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
4456                                             file_name=>"$basedir$t->{'name'}",
4457                                             %base_key)},
4458                              esc_path($t->{'name'}));
4459                print "</td>\n";
4460                print "<td class=\"link\">";
4461                print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
4462                                             file_name=>"$basedir$t->{'name'}",
4463                                             %base_key)},
4464                              "tree");
4465                if (defined $hash_base) {
4466                        print " | " .
4467                              $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
4468                                                     file_name=>"$basedir$t->{'name'}")},
4469                                      "history");
4470                }
4471                print "</td>\n";
4472        } else {
4473                # unknown object: we can only present history for it
4474                # (this includes 'commit' object, i.e. submodule support)
4475                print "<td class=\"list\">" .
4476                      esc_path($t->{'name'}) .
4477                      "</td>\n";
4478                print "<td class=\"link\">";
4479                if (defined $hash_base) {
4480                        print $cgi->a({-href => href(action=>"history",
4481                                                     hash_base=>$hash_base,
4482                                                     file_name=>"$basedir$t->{'name'}")},
4483                                      "history");
4484                }
4485                print "</td>\n";
4486        }
4487}
4488
4489## ......................................................................
4490## functions printing large fragments of HTML
4491
4492# get pre-image filenames for merge (combined) diff
4493sub fill_from_file_info {
4494        my ($diff, @parents) = @_;
4495
4496        $diff->{'from_file'} = [ ];
4497        $diff->{'from_file'}[$diff->{'nparents'} - 1] = undef;
4498        for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
4499                if ($diff->{'status'}[$i] eq 'R' ||
4500                    $diff->{'status'}[$i] eq 'C') {
4501                        $diff->{'from_file'}[$i] =
4502                                git_get_path_by_hash($parents[$i], $diff->{'from_id'}[$i]);
4503                }
4504        }
4505
4506        return $diff;
4507}
4508
4509# is current raw difftree line of file deletion
4510sub is_deleted {
4511        my $diffinfo = shift;
4512
4513        return $diffinfo->{'to_id'} eq ('0' x 40);
4514}
4515
4516# does patch correspond to [previous] difftree raw line
4517# $diffinfo  - hashref of parsed raw diff format
4518# $patchinfo - hashref of parsed patch diff format
4519#              (the same keys as in $diffinfo)
4520sub is_patch_split {
4521        my ($diffinfo, $patchinfo) = @_;
4522
4523        return defined $diffinfo && defined $patchinfo
4524                && $diffinfo->{'to_file'} eq $patchinfo->{'to_file'};
4525}
4526
4527
4528sub git_difftree_body {
4529        my ($difftree, $hash, @parents) = @_;
4530        my ($parent) = $parents[0];
4531        my $have_blame = gitweb_check_feature('blame');
4532        print "<div class=\"list_head\">\n";
4533        if ($#{$difftree} > 10) {
4534                print(($#{$difftree} + 1) . " files changed:\n");
4535        }
4536        print "</div>\n";
4537
4538        print "<table class=\"" .
4539              (@parents > 1 ? "combined " : "") .
4540              "diff_tree\">\n";
4541
4542        # header only for combined diff in 'commitdiff' view
4543        my $has_header = @$difftree && @parents > 1 && $action eq 'commitdiff';
4544        if ($has_header) {
4545                # table header
4546                print "<thead><tr>\n" .
4547                       "<th></th><th></th>\n"; # filename, patchN link
4548                for (my $i = 0; $i < @parents; $i++) {
4549                        my $par = $parents[$i];
4550                        print "<th>" .
4551                              $cgi->a({-href => href(action=>"commitdiff",
4552                                                     hash=>$hash, hash_parent=>$par),
4553                                       -title => 'commitdiff to parent number ' .
4554                                                  ($i+1) . ': ' . substr($par,0,7)},
4555                                      $i+1) .
4556                              "&nbsp;</th>\n";
4557                }
4558                print "</tr></thead>\n<tbody>\n";
4559        }
4560
4561        my $alternate = 1;
4562        my $patchno = 0;
4563        foreach my $line (@{$difftree}) {
4564                my $diff = parsed_difftree_line($line);
4565
4566                if ($alternate) {
4567                        print "<tr class=\"dark\">\n";
4568                } else {
4569                        print "<tr class=\"light\">\n";
4570                }
4571                $alternate ^= 1;
4572
4573                if (exists $diff->{'nparents'}) { # combined diff
4574
4575                        fill_from_file_info($diff, @parents)
4576                                unless exists $diff->{'from_file'};
4577
4578                        if (!is_deleted($diff)) {
4579                                # file exists in the result (child) commit
4580                                print "<td>" .
4581                                      $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
4582                                                             file_name=>$diff->{'to_file'},
4583                                                             hash_base=>$hash),
4584                                              -class => "list"}, esc_path($diff->{'to_file'})) .
4585                                      "</td>\n";
4586                        } else {
4587                                print "<td>" .
4588                                      esc_path($diff->{'to_file'}) .
4589                                      "</td>\n";
4590                        }
4591
4592                        if ($action eq 'commitdiff') {
4593                                # link to patch
4594                                $patchno++;
4595                                print "<td class=\"link\">" .
4596                                      $cgi->a({-href => href(-anchor=>"patch$patchno")},
4597                                              "patch") .
4598                                      " | " .
4599                                      "</td>\n";
4600                        }
4601
4602                        my $has_history = 0;
4603                        my $not_deleted = 0;
4604                        for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
4605                                my $hash_parent = $parents[$i];
4606                                my $from_hash = $diff->{'from_id'}[$i];
4607                                my $from_path = $diff->{'from_file'}[$i];
4608                                my $status = $diff->{'status'}[$i];
4609
4610                                $has_history ||= ($status ne 'A');
4611                                $not_deleted ||= ($status ne 'D');
4612
4613                                if ($status eq 'A') {
4614                                        print "<td  class=\"link\" align=\"right\"> | </td>\n";
4615                                } elsif ($status eq 'D') {
4616                                        print "<td class=\"link\">" .
4617                                              $cgi->a({-href => href(action=>"blob",
4618                                                                     hash_base=>$hash,
4619                                                                     hash=>$from_hash,
4620                                                                     file_name=>$from_path)},
4621                                                      "blob" . ($i+1)) .
4622                                              " | </td>\n";
4623                                } else {
4624                                        if ($diff->{'to_id'} eq $from_hash) {
4625                                                print "<td class=\"link nochange\">";
4626                                        } else {
4627                                                print "<td class=\"link\">";
4628                                        }
4629                                        print $cgi->a({-href => href(action=>"blobdiff",
4630                                                                     hash=>$diff->{'to_id'},
4631                                                                     hash_parent=>$from_hash,
4632                                                                     hash_base=>$hash,
4633                                                                     hash_parent_base=>$hash_parent,
4634                                                                     file_name=>$diff->{'to_file'},
4635                                                                     file_parent=>$from_path)},
4636                                                      "diff" . ($i+1)) .
4637                                              " | </td>\n";
4638                                }
4639                        }
4640
4641                        print "<td class=\"link\">";
4642                        if ($not_deleted) {
4643                                print $cgi->a({-href => href(action=>"blob",
4644                                                             hash=>$diff->{'to_id'},
4645                                                             file_name=>$diff->{'to_file'},
4646                                                             hash_base=>$hash)},
4647                                              "blob");
4648                                print " | " if ($has_history);
4649                        }
4650                        if ($has_history) {
4651                                print $cgi->a({-href => href(action=>"history",
4652                                                             file_name=>$diff->{'to_file'},
4653                                                             hash_base=>$hash)},
4654                                              "history");
4655                        }
4656                        print "</td>\n";
4657
4658                        print "</tr>\n";
4659                        next; # instead of 'else' clause, to avoid extra indent
4660                }
4661                # else ordinary diff
4662
4663                my ($to_mode_oct, $to_mode_str, $to_file_type);
4664                my ($from_mode_oct, $from_mode_str, $from_file_type);
4665                if ($diff->{'to_mode'} ne ('0' x 6)) {
4666                        $to_mode_oct = oct $diff->{'to_mode'};
4667                        if (S_ISREG($to_mode_oct)) { # only for regular file
4668                                $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
4669                        }
4670                        $to_file_type = file_type($diff->{'to_mode'});
4671                }
4672                if ($diff->{'from_mode'} ne ('0' x 6)) {
4673                        $from_mode_oct = oct $diff->{'from_mode'};
4674                        if (S_ISREG($from_mode_oct)) { # only for regular file
4675                                $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
4676                        }
4677                        $from_file_type = file_type($diff->{'from_mode'});
4678                }
4679
4680                if ($diff->{'status'} eq "A") { # created
4681                        my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
4682                        $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
4683                        $mode_chng   .= "]</span>";
4684                        print "<td>";
4685                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
4686                                                     hash_base=>$hash, file_name=>$diff->{'file'}),
4687                                      -class => "list"}, esc_path($diff->{'file'}));
4688                        print "</td>\n";
4689                        print "<td>$mode_chng</td>\n";
4690                        print "<td class=\"link\">";
4691                        if ($action eq 'commitdiff') {
4692                                # link to patch
4693                                $patchno++;
4694                                print $cgi->a({-href => href(-anchor=>"patch$patchno")},
4695                                              "patch") .
4696                                      " | ";
4697                        }
4698                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
4699                                                     hash_base=>$hash, file_name=>$diff->{'file'})},
4700                                      "blob");
4701                        print "</td>\n";
4702
4703                } elsif ($diff->{'status'} eq "D") { # deleted
4704                        my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
4705                        print "<td>";
4706                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
4707                                                     hash_base=>$parent, file_name=>$diff->{'file'}),
4708                                       -class => "list"}, esc_path($diff->{'file'}));
4709                        print "</td>\n";
4710                        print "<td>$mode_chng</td>\n";
4711                        print "<td class=\"link\">";
4712                        if ($action eq 'commitdiff') {
4713                                # link to patch
4714                                $patchno++;
4715                                print $cgi->a({-href => href(-anchor=>"patch$patchno")},
4716                                              "patch") .
4717                                      " | ";
4718                        }
4719                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
4720                                                     hash_base=>$parent, file_name=>$diff->{'file'})},
4721                                      "blob") . " | ";
4722                        if ($have_blame) {
4723                                print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
4724                                                             file_name=>$diff->{'file'})},
4725                                              "blame") . " | ";
4726                        }
4727                        print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
4728                                                     file_name=>$diff->{'file'})},
4729                                      "history");
4730                        print "</td>\n";
4731
4732                } elsif ($diff->{'status'} eq "M" || $diff->{'status'} eq "T") { # modified, or type changed
4733                        my $mode_chnge = "";
4734                        if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
4735                                $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
4736                                if ($from_file_type ne $to_file_type) {
4737                                        $mode_chnge .= " from $from_file_type to $to_file_type";
4738                                }
4739                                if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
4740                                        if ($from_mode_str && $to_mode_str) {
4741                                                $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
4742                                        } elsif ($to_mode_str) {
4743                                                $mode_chnge .= " mode: $to_mode_str";
4744                                        }
4745                                }
4746                                $mode_chnge .= "]</span>\n";
4747                        }
4748                        print "<td>";
4749                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
4750                                                     hash_base=>$hash, file_name=>$diff->{'file'}),
4751                                      -class => "list"}, esc_path($diff->{'file'}));
4752                        print "</td>\n";
4753                        print "<td>$mode_chnge</td>\n";
4754                        print "<td class=\"link\">";
4755                        if ($action eq 'commitdiff') {
4756                                # link to patch
4757                                $patchno++;
4758                                print $cgi->a({-href => href(-anchor=>"patch$patchno")},
4759                                              "patch") .
4760                                      " | ";
4761                        } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
4762                                # "commit" view and modified file (not onlu mode changed)
4763                                print $cgi->a({-href => href(action=>"blobdiff",
4764                                                             hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
4765                                                             hash_base=>$hash, hash_parent_base=>$parent,
4766                                                             file_name=>$diff->{'file'})},
4767                                              "diff") .
4768                                      " | ";
4769                        }
4770                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
4771                                                     hash_base=>$hash, file_name=>$diff->{'file'})},
4772                                       "blob") . " | ";
4773                        if ($have_blame) {
4774                                print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
4775                                                             file_name=>$diff->{'file'})},
4776                                              "blame") . " | ";
4777                        }
4778                        print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
4779                                                     file_name=>$diff->{'file'})},
4780                                      "history");
4781                        print "</td>\n";
4782
4783                } elsif ($diff->{'status'} eq "R" || $diff->{'status'} eq "C") { # renamed or copied
4784                        my %status_name = ('R' => 'moved', 'C' => 'copied');
4785                        my $nstatus = $status_name{$diff->{'status'}};
4786                        my $mode_chng = "";
4787                        if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
4788                                # mode also for directories, so we cannot use $to_mode_str
4789                                $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
4790                        }
4791                        print "<td>" .
4792                              $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
4793                                                     hash=>$diff->{'to_id'}, file_name=>$diff->{'to_file'}),
4794                                      -class => "list"}, esc_path($diff->{'to_file'})) . "</td>\n" .
4795                              "<td><span class=\"file_status $nstatus\">[$nstatus from " .
4796                              $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
4797                                                     hash=>$diff->{'from_id'}, file_name=>$diff->{'from_file'}),
4798                                      -class => "list"}, esc_path($diff->{'from_file'})) .
4799                              " with " . (int $diff->{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
4800                              "<td class=\"link\">";
4801                        if ($action eq 'commitdiff') {
4802                                # link to patch
4803                                $patchno++;
4804                                print $cgi->a({-href => href(-anchor=>"patch$patchno")},
4805                                              "patch") .
4806                                      " | ";
4807                        } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
4808                                # "commit" view and modified file (not only pure rename or copy)
4809                                print $cgi->a({-href => href(action=>"blobdiff",
4810                                                             hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
4811                                                             hash_base=>$hash, hash_parent_base=>$parent,
4812                                                             file_name=>$diff->{'to_file'}, file_parent=>$diff->{'from_file'})},
4813                                              "diff") .
4814                                      " | ";
4815                        }
4816                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
4817                                                     hash_base=>$parent, file_name=>$diff->{'to_file'})},
4818                                      "blob") . " | ";
4819                        if ($have_blame) {
4820                                print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
4821                                                             file_name=>$diff->{'to_file'})},
4822                                              "blame") . " | ";
4823                        }
4824                        print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
4825                                                    file_name=>$diff->{'to_file'})},
4826                                      "history");
4827                        print "</td>\n";
4828
4829                } # we should not encounter Unmerged (U) or Unknown (X) status
4830                print "</tr>\n";
4831        }
4832        print "</tbody>" if $has_header;
4833        print "</table>\n";
4834}
4835
4836sub git_patchset_body {
4837        my ($fd, $difftree, $hash, @hash_parents) = @_;
4838        my ($hash_parent) = $hash_parents[0];
4839
4840        my $is_combined = (@hash_parents > 1);
4841        my $patch_idx = 0;
4842        my $patch_number = 0;
4843        my $patch_line;
4844        my $diffinfo;
4845        my $to_name;
4846        my (%from, %to);
4847
4848        print "<div class=\"patchset\">\n";
4849
4850        # skip to first patch
4851        while ($patch_line = <$fd>) {
4852                chomp $patch_line;
4853
4854                last if ($patch_line =~ m/^diff /);
4855        }
4856
4857 PATCH:
4858        while ($patch_line) {
4859
4860                # parse "git diff" header line
4861                if ($patch_line =~ m/^diff --git (\"(?:[^\\\"]*(?:\\.[^\\\"]*)*)\"|[^ "]*) (.*)$/) {
4862                        # $1 is from_name, which we do not use
4863                        $to_name = unquote($2);
4864                        $to_name =~ s!^b/!!;
4865                } elsif ($patch_line =~ m/^diff --(cc|combined) ("?.*"?)$/) {
4866                        # $1 is 'cc' or 'combined', which we do not use
4867                        $to_name = unquote($2);
4868                } else {
4869                        $to_name = undef;
4870                }
4871
4872                # check if current patch belong to current raw line
4873                # and parse raw git-diff line if needed
4874                if (is_patch_split($diffinfo, { 'to_file' => $to_name })) {
4875                        # this is continuation of a split patch
4876                        print "<div class=\"patch cont\">\n";
4877                } else {
4878                        # advance raw git-diff output if needed
4879                        $patch_idx++ if defined $diffinfo;
4880
4881                        # read and prepare patch information
4882                        $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
4883
4884                        # compact combined diff output can have some patches skipped
4885                        # find which patch (using pathname of result) we are at now;
4886                        if ($is_combined) {
4887                                while ($to_name ne $diffinfo->{'to_file'}) {
4888                                        print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
4889                                              format_diff_cc_simplified($diffinfo, @hash_parents) .
4890                                              "</div>\n";  # class="patch"
4891
4892                                        $patch_idx++;
4893                                        $patch_number++;
4894
4895                                        last if $patch_idx > $#$difftree;
4896                                        $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
4897                                }
4898                        }
4899
4900                        # modifies %from, %to hashes
4901                        parse_from_to_diffinfo($diffinfo, \%from, \%to, @hash_parents);
4902
4903                        # this is first patch for raw difftree line with $patch_idx index
4904                        # we index @$difftree array from 0, but number patches from 1
4905                        print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
4906                }
4907
4908                # git diff header
4909                #assert($patch_line =~ m/^diff /) if DEBUG;
4910                #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
4911                $patch_number++;
4912                # print "git diff" header
4913                print format_git_diff_header_line($patch_line, $diffinfo,
4914                                                  \%from, \%to);
4915
4916                # print extended diff header
4917                print "<div class=\"diff extended_header\">\n";
4918        EXTENDED_HEADER:
4919                while ($patch_line = <$fd>) {
4920                        chomp $patch_line;
4921
4922                        last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
4923
4924                        print format_extended_diff_header_line($patch_line, $diffinfo,
4925                                                               \%from, \%to);
4926                }
4927                print "</div>\n"; # class="diff extended_header"
4928
4929                # from-file/to-file diff header
4930                if (! $patch_line) {
4931                        print "</div>\n"; # class="patch"
4932                        last PATCH;
4933                }
4934                next PATCH if ($patch_line =~ m/^diff /);
4935                #assert($patch_line =~ m/^---/) if DEBUG;
4936
4937                my $last_patch_line = $patch_line;
4938                $patch_line = <$fd>;
4939                chomp $patch_line;
4940                #assert($patch_line =~ m/^\+\+\+/) if DEBUG;
4941
4942                print format_diff_from_to_header($last_patch_line, $patch_line,
4943                                                 $diffinfo, \%from, \%to,
4944                                                 @hash_parents);
4945
4946                # the patch itself
4947        LINE:
4948                while ($patch_line = <$fd>) {
4949                        chomp $patch_line;
4950
4951                        next PATCH if ($patch_line =~ m/^diff /);
4952
4953                        print format_diff_line($patch_line, \%from, \%to);
4954                }
4955
4956        } continue {
4957                print "</div>\n"; # class="patch"
4958        }
4959
4960        # for compact combined (--cc) format, with chunk and patch simplification
4961        # the patchset might be empty, but there might be unprocessed raw lines
4962        for (++$patch_idx if $patch_number > 0;
4963             $patch_idx < @$difftree;
4964             ++$patch_idx) {
4965                # read and prepare patch information
4966                $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
4967
4968                # generate anchor for "patch" links in difftree / whatchanged part
4969                print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
4970                      format_diff_cc_simplified($diffinfo, @hash_parents) .
4971                      "</div>\n";  # class="patch"
4972
4973                $patch_number++;
4974        }
4975
4976        if ($patch_number == 0) {
4977                if (@hash_parents > 1) {
4978                        print "<div class=\"diff nodifferences\">Trivial merge</div>\n";
4979                } else {
4980                        print "<div class=\"diff nodifferences\">No differences found</div>\n";
4981                }
4982        }
4983
4984        print "</div>\n"; # class="patchset"
4985}
4986
4987# . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4988
4989# fills project list info (age, description, owner, category, forks)
4990# for each project in the list, removing invalid projects from
4991# returned list
4992# NOTE: modifies $projlist, but does not remove entries from it
4993sub fill_project_list_info {
4994        my $projlist = shift;
4995        my @projects;
4996
4997        my $show_ctags = gitweb_check_feature('ctags');
4998 PROJECT:
4999        foreach my $pr (@$projlist) {
5000                my (@activity) = git_get_last_activity($pr->{'path'});
5001                unless (@activity) {
5002                        next PROJECT;
5003                }
5004                ($pr->{'age'}, $pr->{'age_string'}) = @activity;
5005                if (!defined $pr->{'descr'}) {
5006                        my $descr = git_get_project_description($pr->{'path'}) || "";
5007                        $descr = to_utf8($descr);
5008                        $pr->{'descr_long'} = $descr;
5009                        $pr->{'descr'} = chop_str($descr, $projects_list_description_width, 5);
5010                }
5011                if (!defined $pr->{'owner'}) {
5012                        $pr->{'owner'} = git_get_project_owner("$pr->{'path'}") || "";
5013                }
5014                if ($show_ctags) {
5015                        $pr->{'ctags'} = git_get_project_ctags($pr->{'path'});
5016                }
5017                if ($projects_list_group_categories && !defined $pr->{'category'}) {
5018                        my $cat = git_get_project_category($pr->{'path'}) ||
5019                                                           $project_list_default_category;
5020                        $pr->{'category'} = to_utf8($cat);
5021                }
5022
5023                push @projects, $pr;
5024        }
5025
5026        return @projects;
5027}
5028
5029sub sort_projects_list {
5030        my ($projlist, $order) = @_;
5031        my @projects;
5032
5033        my %order_info = (
5034                project => { key => 'path', type => 'str' },
5035                descr => { key => 'descr_long', type => 'str' },
5036                owner => { key => 'owner', type => 'str' },
5037                age => { key => 'age', type => 'num' }
5038        );
5039        my $oi = $order_info{$order};
5040        return @$projlist unless defined $oi;
5041        if ($oi->{'type'} eq 'str') {
5042                @projects = sort {$a->{$oi->{'key'}} cmp $b->{$oi->{'key'}}} @$projlist;
5043        } else {
5044                @projects = sort {$a->{$oi->{'key'}} <=> $b->{$oi->{'key'}}} @$projlist;
5045        }
5046
5047        return @projects;
5048}
5049
5050# returns a hash of categories, containing the list of project
5051# belonging to each category
5052sub build_projlist_by_category {
5053        my ($projlist, $from, $to) = @_;
5054        my %categories;
5055
5056        $from = 0 unless defined $from;
5057        $to = $#$projlist if (!defined $to || $#$projlist < $to);
5058
5059        for (my $i = $from; $i <= $to; $i++) {
5060                my $pr = $projlist->[$i];
5061                push @{$categories{ $pr->{'category'} }}, $pr;
5062        }
5063
5064        return wantarray ? %categories : \%categories;
5065}
5066
5067# print 'sort by' <th> element, generating 'sort by $name' replay link
5068# if that order is not selected
5069sub print_sort_th {
5070        print format_sort_th(@_);
5071}
5072
5073sub format_sort_th {
5074        my ($name, $order, $header) = @_;
5075        my $sort_th = "";
5076        $header ||= ucfirst($name);
5077
5078        if ($order eq $name) {
5079                $sort_th .= "<th>$header</th>\n";
5080        } else {
5081                $sort_th .= "<th>" .
5082                            $cgi->a({-href => href(-replay=>1, order=>$name),
5083                                     -class => "header"}, $header) .
5084                            "</th>\n";
5085        }
5086
5087        return $sort_th;
5088}
5089
5090sub git_project_list_rows {
5091        my ($projlist, $from, $to, $check_forks) = @_;
5092
5093        $from = 0 unless defined $from;
5094        $to = $#$projlist if (!defined $to || $#$projlist < $to);
5095
5096        my $alternate = 1;
5097        for (my $i = $from; $i <= $to; $i++) {
5098                my $pr = $projlist->[$i];
5099
5100                if ($alternate) {
5101                        print "<tr class=\"dark\">\n";
5102                } else {
5103                        print "<tr class=\"light\">\n";
5104                }
5105                $alternate ^= 1;
5106
5107                if ($check_forks) {
5108                        print "<td>";
5109                        if ($pr->{'forks'}) {
5110                                my $nforks = scalar @{$pr->{'forks'}};
5111                                if ($nforks > 0) {
5112                                        print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks"),
5113                                                       -title => "$nforks forks"}, "+");
5114                                } else {
5115                                        print $cgi->span({-title => "$nforks forks"}, "+");
5116                                }
5117                        }
5118                        print "</td>\n";
5119                }
5120                print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
5121                                        -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
5122                      "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
5123                                        -class => "list", -title => $pr->{'descr_long'}},
5124                                        esc_html($pr->{'descr'})) . "</td>\n" .
5125                      "<td><i>" . chop_and_escape_str($pr->{'owner'}, 15) . "</i></td>\n";
5126                print "<td class=\"". age_class($pr->{'age'}) . "\">" .
5127                      (defined $pr->{'age_string'} ? $pr->{'age_string'} : "No commits") . "</td>\n" .
5128                      "<td class=\"link\">" .
5129                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
5130                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
5131                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
5132                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
5133                      ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
5134                      "</td>\n" .
5135                      "</tr>\n";
5136        }
5137}
5138
5139sub git_project_list_body {
5140        # actually uses global variable $project
5141        my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
5142        my @projects = @$projlist;
5143
5144        my $check_forks = gitweb_check_feature('forks');
5145        my $show_ctags  = gitweb_check_feature('ctags');
5146        my $tagfilter = $show_ctags ? $cgi->param('by_tag') : undef;
5147        $check_forks = undef
5148                if ($tagfilter || $searchtext);
5149
5150        # filtering out forks before filling info allows to do less work
5151        @projects = filter_forks_from_projects_list(\@projects)
5152                if ($check_forks);
5153        @projects = fill_project_list_info(\@projects);
5154        # searching projects require filling to be run before it
5155        @projects = search_projects_list(\@projects,
5156                                         'searchtext' => $searchtext,
5157                                         'tagfilter'  => $tagfilter)
5158                if ($tagfilter || $searchtext);
5159
5160        $order ||= $default_projects_order;
5161        $from = 0 unless defined $from;
5162        $to = $#projects if (!defined $to || $#projects < $to);
5163
5164        # short circuit
5165        if ($from > $to) {
5166                print "<center>\n".
5167                      "<b>No such projects found</b><br />\n".
5168                      "Click ".$cgi->a({-href=>href(project=>undef)},"here")." to view all projects<br />\n".
5169                      "</center>\n<br />\n";
5170                return;
5171        }
5172
5173        @projects = sort_projects_list(\@projects, $order);
5174
5175        if ($show_ctags) {
5176                my $ctags = git_gather_all_ctags(\@projects);
5177                my $cloud = git_populate_project_tagcloud($ctags);
5178                print git_show_project_tagcloud($cloud, 64);
5179        }
5180
5181        print "<table class=\"project_list\">\n";
5182        unless ($no_header) {
5183                print "<tr>\n";
5184                if ($check_forks) {
5185                        print "<th></th>\n";
5186                }
5187                print_sort_th('project', $order, 'Project');
5188                print_sort_th('descr', $order, 'Description');
5189                print_sort_th('owner', $order, 'Owner');
5190                print_sort_th('age', $order, 'Last Change');
5191                print "<th></th>\n" . # for links
5192                      "</tr>\n";
5193        }
5194
5195        if ($projects_list_group_categories) {
5196                # only display categories with projects in the $from-$to window
5197                @projects = sort {$a->{'category'} cmp $b->{'category'}} @projects[$from..$to];
5198                my %categories = build_projlist_by_category(\@projects, $from, $to);
5199                foreach my $cat (sort keys %categories) {
5200                        unless ($cat eq "") {
5201                                print "<tr>\n";
5202                                if ($check_forks) {
5203                                        print "<td></td>\n";
5204                                }
5205                                print "<td class=\"category\" colspan=\"5\">".esc_html($cat)."</td>\n";
5206                                print "</tr>\n";
5207                        }
5208
5209                        git_project_list_rows($categories{$cat}, undef, undef, $check_forks);
5210                }
5211        } else {
5212                git_project_list_rows(\@projects, $from, $to, $check_forks);
5213        }
5214
5215        if (defined $extra) {
5216                print "<tr>\n";
5217                if ($check_forks) {
5218                        print "<td></td>\n";
5219                }
5220                print "<td colspan=\"5\">$extra</td>\n" .
5221                      "</tr>\n";
5222        }
5223        print "</table>\n";
5224}
5225
5226sub git_log_body {
5227        # uses global variable $project
5228        my ($commitlist, $from, $to, $refs, $extra) = @_;
5229
5230        $from = 0 unless defined $from;
5231        $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
5232
5233        for (my $i = 0; $i <= $to; $i++) {
5234                my %co = %{$commitlist->[$i]};
5235                next if !%co;
5236                my $commit = $co{'id'};
5237                my $ref = format_ref_marker($refs, $commit);
5238                git_print_header_div('commit',
5239                               "<span class=\"age\">$co{'age_string'}</span>" .
5240                               esc_html($co{'title'}) . $ref,
5241                               $commit);
5242                print "<div class=\"title_text\">\n" .
5243                      "<div class=\"log_link\">\n" .
5244                      $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
5245                      " | " .
5246                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
5247                      " | " .
5248                      $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
5249                      "<br/>\n" .
5250                      "</div>\n";
5251                      git_print_authorship(\%co, -tag => 'span');
5252                      print "<br/>\n</div>\n";
5253
5254                print "<div class=\"log_body\">\n";
5255                git_print_log($co{'comment'}, -final_empty_line=> 1);
5256                print "</div>\n";
5257        }
5258        if ($extra) {
5259                print "<div class=\"page_nav\">\n";
5260                print "$extra\n";
5261                print "</div>\n";
5262        }
5263}
5264
5265sub git_shortlog_body {
5266        # uses global variable $project
5267        my ($commitlist, $from, $to, $refs, $extra) = @_;
5268
5269        $from = 0 unless defined $from;
5270        $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
5271
5272        print "<table class=\"shortlog\">\n";
5273        my $alternate = 1;
5274        for (my $i = $from; $i <= $to; $i++) {
5275                my %co = %{$commitlist->[$i]};
5276                my $commit = $co{'id'};
5277                my $ref = format_ref_marker($refs, $commit);
5278                if ($alternate) {
5279                        print "<tr class=\"dark\">\n";
5280                } else {
5281                        print "<tr class=\"light\">\n";
5282                }
5283                $alternate ^= 1;
5284                # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
5285                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
5286                      format_author_html('td', \%co, 10) . "<td>";
5287                print format_subject_html($co{'title'}, $co{'title_short'},
5288                                          href(action=>"commit", hash=>$commit), $ref);
5289                print "</td>\n" .
5290                      "<td class=\"link\">" .
5291                      $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
5292                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
5293                      $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
5294                my $snapshot_links = format_snapshot_links($commit);
5295                if (defined $snapshot_links) {
5296                        print " | " . $snapshot_links;
5297                }
5298                print "</td>\n" .
5299                      "</tr>\n";
5300        }
5301        if (defined $extra) {
5302                print "<tr>\n" .
5303                      "<td colspan=\"4\">$extra</td>\n" .
5304                      "</tr>\n";
5305        }
5306        print "</table>\n";
5307}
5308
5309sub git_history_body {
5310        # Warning: assumes constant type (blob or tree) during history
5311        my ($commitlist, $from, $to, $refs, $extra,
5312            $file_name, $file_hash, $ftype) = @_;
5313
5314        $from = 0 unless defined $from;
5315        $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
5316
5317        print "<table class=\"history\">\n";
5318        my $alternate = 1;
5319        for (my $i = $from; $i <= $to; $i++) {
5320                my %co = %{$commitlist->[$i]};
5321                if (!%co) {
5322                        next;
5323                }
5324                my $commit = $co{'id'};
5325
5326                my $ref = format_ref_marker($refs, $commit);
5327
5328                if ($alternate) {
5329                        print "<tr class=\"dark\">\n";
5330                } else {
5331                        print "<tr class=\"light\">\n";
5332                }
5333                $alternate ^= 1;
5334                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
5335        # shortlog:   format_author_html('td', \%co, 10)
5336                      format_author_html('td', \%co, 15, 3) . "<td>";
5337                # originally git_history used chop_str($co{'title'}, 50)
5338                print format_subject_html($co{'title'}, $co{'title_short'},
5339                                          href(action=>"commit", hash=>$commit), $ref);
5340                print "</td>\n" .
5341                      "<td class=\"link\">" .
5342                      $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
5343                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
5344
5345                if ($ftype eq 'blob') {
5346                        my $blob_current = $file_hash;
5347                        my $blob_parent  = git_get_hash_by_path($commit, $file_name);
5348                        if (defined $blob_current && defined $blob_parent &&
5349                                        $blob_current ne $blob_parent) {
5350                                print " | " .
5351                                        $cgi->a({-href => href(action=>"blobdiff",
5352                                                               hash=>$blob_current, hash_parent=>$blob_parent,
5353                                                               hash_base=>$hash_base, hash_parent_base=>$commit,
5354                                                               file_name=>$file_name)},
5355                                                "diff to current");
5356                        }
5357                }
5358                print "</td>\n" .
5359                      "</tr>\n";
5360        }
5361        if (defined $extra) {
5362                print "<tr>\n" .
5363                      "<td colspan=\"4\">$extra</td>\n" .
5364                      "</tr>\n";
5365        }
5366        print "</table>\n";
5367}
5368
5369sub git_tags_body {
5370        # uses global variable $project
5371        my ($taglist, $from, $to, $extra) = @_;
5372        $from = 0 unless defined $from;
5373        $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
5374
5375        print "<table class=\"tags\">\n";
5376        my $alternate = 1;
5377        for (my $i = $from; $i <= $to; $i++) {
5378                my $entry = $taglist->[$i];
5379                my %tag = %$entry;
5380                my $comment = $tag{'subject'};
5381                my $comment_short;
5382                if (defined $comment) {
5383                        $comment_short = chop_str($comment, 30, 5);
5384                }
5385                if ($alternate) {
5386                        print "<tr class=\"dark\">\n";
5387                } else {
5388                        print "<tr class=\"light\">\n";
5389                }
5390                $alternate ^= 1;
5391                if (defined $tag{'age'}) {
5392                        print "<td><i>$tag{'age'}</i></td>\n";
5393                } else {
5394                        print "<td></td>\n";
5395                }
5396                print "<td>" .
5397                      $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
5398                               -class => "list name"}, esc_html($tag{'name'})) .
5399                      "</td>\n" .
5400                      "<td>";
5401                if (defined $comment) {
5402                        print format_subject_html($comment, $comment_short,
5403                                                  href(action=>"tag", hash=>$tag{'id'}));
5404                }
5405                print "</td>\n" .
5406                      "<td class=\"selflink\">";
5407                if ($tag{'type'} eq "tag") {
5408                        print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
5409                } else {
5410                        print "&nbsp;";
5411                }
5412                print "</td>\n" .
5413                      "<td class=\"link\">" . " | " .
5414                      $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
5415                if ($tag{'reftype'} eq "commit") {
5416                        print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'fullname'})}, "shortlog") .
5417                              " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'fullname'})}, "log");
5418                } elsif ($tag{'reftype'} eq "blob") {
5419                        print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
5420                }
5421                print "</td>\n" .
5422                      "</tr>";
5423        }
5424        if (defined $extra) {
5425                print "<tr>\n" .
5426                      "<td colspan=\"5\">$extra</td>\n" .
5427                      "</tr>\n";
5428        }
5429        print "</table>\n";
5430}
5431
5432sub git_heads_body {
5433        # uses global variable $project
5434        my ($headlist, $head, $from, $to, $extra) = @_;
5435        $from = 0 unless defined $from;
5436        $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
5437
5438        print "<table class=\"heads\">\n";
5439        my $alternate = 1;
5440        for (my $i = $from; $i <= $to; $i++) {
5441                my $entry = $headlist->[$i];
5442                my %ref = %$entry;
5443                my $curr = $ref{'id'} eq $head;
5444                if ($alternate) {
5445                        print "<tr class=\"dark\">\n";
5446                } else {
5447                        print "<tr class=\"light\">\n";
5448                }
5449                $alternate ^= 1;
5450                print "<td><i>$ref{'age'}</i></td>\n" .
5451                      ($curr ? "<td class=\"current_head\">" : "<td>") .
5452                      $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'fullname'}),
5453                               -class => "list name"},esc_html($ref{'name'})) .
5454                      "</td>\n" .
5455                      "<td class=\"link\">" .
5456                      $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'fullname'})}, "shortlog") . " | " .
5457                      $cgi->a({-href => href(action=>"log", hash=>$ref{'fullname'})}, "log") . " | " .
5458                      $cgi->a({-href => href(action=>"tree", hash=>$ref{'fullname'}, hash_base=>$ref{'fullname'})}, "tree") .
5459                      "</td>\n" .
5460                      "</tr>";
5461        }
5462        if (defined $extra) {
5463                print "<tr>\n" .
5464                      "<td colspan=\"3\">$extra</td>\n" .
5465                      "</tr>\n";
5466        }
5467        print "</table>\n";
5468}
5469
5470# Display a single remote block
5471sub git_remote_block {
5472        my ($remote, $rdata, $limit, $head) = @_;
5473
5474        my $heads = $rdata->{'heads'};
5475        my $fetch = $rdata->{'fetch'};
5476        my $push = $rdata->{'push'};
5477
5478        my $urls_table = "<table class=\"projects_list\">\n" ;
5479
5480        if (defined $fetch) {
5481                if ($fetch eq $push) {
5482                        $urls_table .= format_repo_url("URL", $fetch);
5483                } else {
5484                        $urls_table .= format_repo_url("Fetch URL", $fetch);
5485                        $urls_table .= format_repo_url("Push URL", $push) if defined $push;
5486                }
5487        } elsif (defined $push) {
5488                $urls_table .= format_repo_url("Push URL", $push);
5489        } else {
5490                $urls_table .= format_repo_url("", "No remote URL");
5491        }
5492
5493        $urls_table .= "</table>\n";
5494
5495        my $dots;
5496        if (defined $limit && $limit < @$heads) {
5497                $dots = $cgi->a({-href => href(action=>"remotes", hash=>$remote)}, "...");
5498        }
5499
5500        print $urls_table;
5501        git_heads_body($heads, $head, 0, $limit, $dots);
5502}
5503
5504# Display a list of remote names with the respective fetch and push URLs
5505sub git_remotes_list {
5506        my ($remotedata, $limit) = @_;
5507        print "<table class=\"heads\">\n";
5508        my $alternate = 1;
5509        my @remotes = sort keys %$remotedata;
5510
5511        my $limited = $limit && $limit < @remotes;
5512
5513        $#remotes = $limit - 1 if $limited;
5514
5515        while (my $remote = shift @remotes) {
5516                my $rdata = $remotedata->{$remote};
5517                my $fetch = $rdata->{'fetch'};
5518                my $push = $rdata->{'push'};
5519                if ($alternate) {
5520                        print "<tr class=\"dark\">\n";
5521                } else {
5522                        print "<tr class=\"light\">\n";
5523                }
5524                $alternate ^= 1;
5525                print "<td>" .
5526                      $cgi->a({-href=> href(action=>'remotes', hash=>$remote),
5527                               -class=> "list name"},esc_html($remote)) .
5528                      "</td>";
5529                print "<td class=\"link\">" .
5530                      (defined $fetch ? $cgi->a({-href=> $fetch}, "fetch") : "fetch") .
5531                      " | " .
5532                      (defined $push ? $cgi->a({-href=> $push}, "push") : "push") .
5533                      "</td>";
5534
5535                print "</tr>\n";
5536        }
5537
5538        if ($limited) {
5539                print "<tr>\n" .
5540                      "<td colspan=\"3\">" .
5541                      $cgi->a({-href => href(action=>"remotes")}, "...") .
5542                      "</td>\n" . "</tr>\n";
5543        }
5544
5545        print "</table>";
5546}
5547
5548# Display remote heads grouped by remote, unless there are too many
5549# remotes, in which case we only display the remote names
5550sub git_remotes_body {
5551        my ($remotedata, $limit, $head) = @_;
5552        if ($limit and $limit < keys %$remotedata) {
5553                git_remotes_list($remotedata, $limit);
5554        } else {
5555                fill_remote_heads($remotedata);
5556                while (my ($remote, $rdata) = each %$remotedata) {
5557                        git_print_section({-class=>"remote", -id=>$remote},
5558                                ["remotes", $remote, $remote], sub {
5559                                        git_remote_block($remote, $rdata, $limit, $head);
5560                                });
5561                }
5562        }
5563}
5564
5565sub git_search_message {
5566        my %co = @_;
5567
5568        my $greptype;
5569        if ($searchtype eq 'commit') {
5570                $greptype = "--grep=";
5571        } elsif ($searchtype eq 'author') {
5572                $greptype = "--author=";
5573        } elsif ($searchtype eq 'committer') {
5574                $greptype = "--committer=";
5575        }
5576        $greptype .= $searchtext;
5577        my @commitlist = parse_commits($hash, 101, (100 * $page), undef,
5578                                       $greptype, '--regexp-ignore-case',
5579                                       $search_use_regexp ? '--extended-regexp' : '--fixed-strings');
5580
5581        my $paging_nav = '';
5582        if ($page > 0) {
5583                $paging_nav .=
5584                        $cgi->a({-href => href(-replay=>1, page=>undef)},
5585                                "first") .
5586                        " &sdot; " .
5587                        $cgi->a({-href => href(-replay=>1, page=>$page-1),
5588                                 -accesskey => "p", -title => "Alt-p"}, "prev");
5589        } else {
5590                $paging_nav .= "first &sdot; prev";
5591        }
5592        my $next_link = '';
5593        if ($#commitlist >= 100) {
5594                $next_link =
5595                        $cgi->a({-href => href(-replay=>1, page=>$page+1),
5596                                 -accesskey => "n", -title => "Alt-n"}, "next");
5597                $paging_nav .= " &sdot; $next_link";
5598        } else {
5599                $paging_nav .= " &sdot; next";
5600        }
5601
5602        git_header_html();
5603
5604        git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
5605        git_print_header_div('commit', esc_html($co{'title'}), $hash);
5606        if ($page == 0 && !@commitlist) {
5607                print "<p>No match.</p>\n";
5608        } else {
5609                git_search_grep_body(\@commitlist, 0, 99, $next_link);
5610        }
5611
5612        git_footer_html();
5613}
5614
5615sub git_search_changes {
5616        my %co = @_;
5617
5618        local $/ = "\n";
5619        open my $fd, '-|', git_cmd(), '--no-pager', 'log', @diff_opts,
5620                '--pretty=format:%H', '--no-abbrev', '--raw', "-S$searchtext",
5621                ($search_use_regexp ? '--pickaxe-regex' : ())
5622                        or die_error(500, "Open git-log failed");
5623
5624        git_header_html();
5625
5626        git_print_page_nav('','', $hash,$co{'tree'},$hash);
5627        git_print_header_div('commit', esc_html($co{'title'}), $hash);
5628
5629        print "<table class=\"pickaxe search\">\n";
5630        my $alternate = 1;
5631        undef %co;
5632        my @files;
5633        while (my $line = <$fd>) {
5634                chomp $line;
5635                next unless $line;
5636
5637                my %set = parse_difftree_raw_line($line);
5638                if (defined $set{'commit'}) {
5639                        # finish previous commit
5640                        if (%co) {
5641                                print "</td>\n" .
5642                                      "<td class=\"link\">" .
5643                                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})},
5644                                              "commit") .
5645                                      " | " .
5646                                      $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'},
5647                                                             hash_base=>$co{'id'})},
5648                                              "tree") .
5649                                      "</td>\n" .
5650                                      "</tr>\n";
5651                        }
5652
5653                        if ($alternate) {
5654                                print "<tr class=\"dark\">\n";
5655                        } else {
5656                                print "<tr class=\"light\">\n";
5657                        }
5658                        $alternate ^= 1;
5659                        %co = parse_commit($set{'commit'});
5660                        my $author = chop_and_escape_str($co{'author_name'}, 15, 5);
5661                        print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
5662                              "<td><i>$author</i></td>\n" .
5663                              "<td>" .
5664                              $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
5665                                      -class => "list subject"},
5666                                      chop_and_escape_str($co{'title'}, 50) . "<br/>");
5667                } elsif (defined $set{'to_id'}) {
5668                        next if ($set{'to_id'} =~ m/^0{40}$/);
5669
5670                        print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
5671                                                     hash=>$set{'to_id'}, file_name=>$set{'to_file'}),
5672                                      -class => "list"},
5673                                      "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
5674                              "<br/>\n";
5675                }
5676        }
5677        close $fd;
5678
5679        # finish last commit (warning: repetition!)
5680        if (%co) {
5681                print "</td>\n" .
5682                      "<td class=\"link\">" .
5683                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})},
5684                              "commit") .
5685                      " | " .
5686                      $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'},
5687                                             hash_base=>$co{'id'})},
5688                              "tree") .
5689                      "</td>\n" .
5690                      "</tr>\n";
5691        }
5692
5693        print "</table>\n";
5694
5695        git_footer_html();
5696}
5697
5698sub git_search_files {
5699        my %co = @_;
5700
5701        local $/ = "\n";
5702        open my $fd, "-|", git_cmd(), 'grep', '-n',
5703                $search_use_regexp ? ('-E', '-i') : '-F',
5704                $searchtext, $co{'tree'}
5705                        or die_error(500, "Open git-grep failed");
5706
5707        git_header_html();
5708
5709        git_print_page_nav('','', $hash,$co{'tree'},$hash);
5710        git_print_header_div('commit', esc_html($co{'title'}), $hash);
5711
5712        print "<table class=\"grep_search\">\n";
5713        my $alternate = 1;
5714        my $matches = 0;
5715        my $lastfile = '';
5716        while (my $line = <$fd>) {
5717                chomp $line;
5718                my ($file, $file_href, $lno, $ltext, $binary);
5719                last if ($matches++ > 1000);
5720                if ($line =~ /^Binary file (.+) matches$/) {
5721                        $file = $1;
5722                        $binary = 1;
5723                } else {
5724                        (undef, $file, $lno, $ltext) = split(/:/, $line, 4);
5725                }
5726                if ($file ne $lastfile) {
5727                        $lastfile and print "</td></tr>\n";
5728                        if ($alternate++) {
5729                                print "<tr class=\"dark\">\n";
5730                        } else {
5731                                print "<tr class=\"light\">\n";
5732                        }
5733                        $file_href = href(action=>"blob", hash_base=>$co{'id'},
5734                                          file_name=>$file);
5735                        print "<td class=\"list\">".
5736                                $cgi->a({-href => $file_href, -class => "list"}, esc_path($file));
5737                        print "</td><td>\n";
5738                        $lastfile = $file;
5739                }
5740                if ($binary) {
5741                        print "<div class=\"binary\">Binary file</div>\n";
5742                } else {
5743                        $ltext = untabify($ltext);
5744                        if ($ltext =~ m/^(.*)($search_regexp)(.*)$/i) {
5745                                $ltext = esc_html($1, -nbsp=>1);
5746                                $ltext .= '<span class="match">';
5747                                $ltext .= esc_html($2, -nbsp=>1);
5748                                $ltext .= '</span>';
5749                                $ltext .= esc_html($3, -nbsp=>1);
5750                        } else {
5751                                $ltext = esc_html($ltext, -nbsp=>1);
5752                        }
5753                        print "<div class=\"pre\">" .
5754                                $cgi->a({-href => $file_href.'#l'.$lno,
5755                                        -class => "linenr"}, sprintf('%4i', $lno)) .
5756                                ' ' .  $ltext . "</div>\n";
5757                }
5758        }
5759        if ($lastfile) {
5760                print "</td></tr>\n";
5761                if ($matches > 1000) {
5762                        print "<div class=\"diff nodifferences\">Too many matches, listing trimmed</div>\n";
5763                }
5764        } else {
5765                print "<div class=\"diff nodifferences\">No matches found</div>\n";
5766        }
5767        close $fd;
5768
5769        print "</table>\n";
5770
5771        git_footer_html();
5772}
5773
5774sub git_search_grep_body {
5775        my ($commitlist, $from, $to, $extra) = @_;
5776        $from = 0 unless defined $from;
5777        $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
5778
5779        print "<table class=\"commit_search\">\n";
5780        my $alternate = 1;
5781        for (my $i = $from; $i <= $to; $i++) {
5782                my %co = %{$commitlist->[$i]};
5783                if (!%co) {
5784                        next;
5785                }
5786                my $commit = $co{'id'};
5787                if ($alternate) {
5788                        print "<tr class=\"dark\">\n";
5789                } else {
5790                        print "<tr class=\"light\">\n";
5791                }
5792                $alternate ^= 1;
5793                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
5794                      format_author_html('td', \%co, 15, 5) .
5795                      "<td>" .
5796                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
5797                               -class => "list subject"},
5798                              chop_and_escape_str($co{'title'}, 50) . "<br/>");
5799                my $comment = $co{'comment'};
5800                foreach my $line (@$comment) {
5801                        if ($line =~ m/^(.*?)($search_regexp)(.*)$/i) {
5802                                my ($lead, $match, $trail) = ($1, $2, $3);
5803                                $match = chop_str($match, 70, 5, 'center');
5804                                my $contextlen = int((80 - length($match))/2);
5805                                $contextlen = 30 if ($contextlen > 30);
5806                                $lead  = chop_str($lead,  $contextlen, 10, 'left');
5807                                $trail = chop_str($trail, $contextlen, 10, 'right');
5808
5809                                $lead  = esc_html($lead);
5810                                $match = esc_html($match);
5811                                $trail = esc_html($trail);
5812
5813                                print "$lead<span class=\"match\">$match</span>$trail<br />";
5814                        }
5815                }
5816                print "</td>\n" .
5817                      "<td class=\"link\">" .
5818                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
5819                      " | " .
5820                      $cgi->a({-href => href(action=>"commitdiff", hash=>$co{'id'})}, "commitdiff") .
5821                      " | " .
5822                      $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
5823                print "</td>\n" .
5824                      "</tr>\n";
5825        }
5826        if (defined $extra) {
5827                print "<tr>\n" .
5828                      "<td colspan=\"3\">$extra</td>\n" .
5829                      "</tr>\n";
5830        }
5831        print "</table>\n";
5832}
5833
5834## ======================================================================
5835## ======================================================================
5836## actions
5837
5838sub git_project_list {
5839        my $order = $input_params{'order'};
5840        if (defined $order && $order !~ m/none|project|descr|owner|age/) {
5841                die_error(400, "Unknown order parameter");
5842        }
5843
5844        my @list = git_get_projects_list();
5845        if (!@list) {
5846                die_error(404, "No projects found");
5847        }
5848
5849        git_header_html();
5850        if (defined $home_text && -f $home_text) {
5851                print "<div class=\"index_include\">\n";
5852                insert_file($home_text);
5853                print "</div>\n";
5854        }
5855        print $cgi->startform(-method => "get") .
5856              "<p class=\"projsearch\">Search:\n" .
5857              $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
5858              "</p>" .
5859              $cgi->end_form() . "\n";
5860        git_project_list_body(\@list, $order);
5861        git_footer_html();
5862}
5863
5864sub git_forks {
5865        my $order = $input_params{'order'};
5866        if (defined $order && $order !~ m/none|project|descr|owner|age/) {
5867                die_error(400, "Unknown order parameter");
5868        }
5869
5870        my @list = git_get_projects_list($project);
5871        if (!@list) {
5872                die_error(404, "No forks found");
5873        }
5874
5875        git_header_html();
5876        git_print_page_nav('','');
5877        git_print_header_div('summary', "$project forks");
5878        git_project_list_body(\@list, $order);
5879        git_footer_html();
5880}
5881
5882sub git_project_index {
5883        my @projects = git_get_projects_list();
5884        if (!@projects) {
5885                die_error(404, "No projects found");
5886        }
5887
5888        print $cgi->header(
5889                -type => 'text/plain',
5890                -charset => 'utf-8',
5891                -content_disposition => 'inline; filename="index.aux"');
5892
5893        foreach my $pr (@projects) {
5894                if (!exists $pr->{'owner'}) {
5895                        $pr->{'owner'} = git_get_project_owner("$pr->{'path'}");
5896                }
5897
5898                my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
5899                # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
5900                $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
5901                $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
5902                $path  =~ s/ /\+/g;
5903                $owner =~ s/ /\+/g;
5904
5905                print "$path $owner\n";
5906        }
5907}
5908
5909sub git_summary {
5910        my $descr = git_get_project_description($project) || "none";
5911        my %co = parse_commit("HEAD");
5912        my %cd = %co ? parse_date($co{'committer_epoch'}, $co{'committer_tz'}) : ();
5913        my $head = $co{'id'};
5914        my $remote_heads = gitweb_check_feature('remote_heads');
5915
5916        my $owner = git_get_project_owner($project);
5917
5918        my $refs = git_get_references();
5919        # These get_*_list functions return one more to allow us to see if
5920        # there are more ...
5921        my @taglist  = git_get_tags_list(16);
5922        my @headlist = git_get_heads_list(16);
5923        my %remotedata = $remote_heads ? git_get_remotes_list() : ();
5924        my @forklist;
5925        my $check_forks = gitweb_check_feature('forks');
5926
5927        if ($check_forks) {
5928                # find forks of a project
5929                @forklist = git_get_projects_list($project);
5930                # filter out forks of forks
5931                @forklist = filter_forks_from_projects_list(\@forklist)
5932                        if (@forklist);
5933        }
5934
5935        git_header_html();
5936        git_print_page_nav('summary','', $head);
5937
5938        print "<div class=\"title\">&nbsp;</div>\n";
5939        print "<table class=\"projects_list\">\n" .
5940              "<tr id=\"metadata_desc\"><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
5941              "<tr id=\"metadata_owner\"><td>owner</td><td>" . esc_html($owner) . "</td></tr>\n";
5942        if (defined $cd{'rfc2822'}) {
5943                print "<tr id=\"metadata_lchange\"><td>last change</td>" .
5944                      "<td>".format_timestamp_html(\%cd)."</td></tr>\n";
5945        }
5946
5947        # use per project git URL list in $projectroot/$project/cloneurl
5948        # or make project git URL from git base URL and project name
5949        my $url_tag = "URL";
5950        my @url_list = git_get_project_url_list($project);
5951        @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
5952        foreach my $git_url (@url_list) {
5953                next unless $git_url;
5954                print format_repo_url($url_tag, $git_url);
5955                $url_tag = "";
5956        }
5957
5958        # Tag cloud
5959        my $show_ctags = gitweb_check_feature('ctags');
5960        if ($show_ctags) {
5961                my $ctags = git_get_project_ctags($project);
5962                if (%$ctags) {
5963                        # without ability to add tags, don't show if there are none
5964                        my $cloud = git_populate_project_tagcloud($ctags);
5965                        print "<tr id=\"metadata_ctags\">" .
5966                              "<td>content tags</td>" .
5967                              "<td>".git_show_project_tagcloud($cloud, 48)."</td>" .
5968                              "</tr>\n";
5969                }
5970        }
5971
5972        print "</table>\n";
5973
5974        # If XSS prevention is on, we don't include README.html.
5975        # TODO: Allow a readme in some safe format.
5976        if (!$prevent_xss && -s "$projectroot/$project/README.html") {
5977                print "<div class=\"title\">readme</div>\n" .
5978                      "<div class=\"readme\">\n";
5979                insert_file("$projectroot/$project/README.html");
5980                print "\n</div>\n"; # class="readme"
5981        }
5982
5983        # we need to request one more than 16 (0..15) to check if
5984        # those 16 are all
5985        my @commitlist = $head ? parse_commits($head, 17) : ();
5986        if (@commitlist) {
5987                git_print_header_div('shortlog');
5988                git_shortlog_body(\@commitlist, 0, 15, $refs,
5989                                  $#commitlist <=  15 ? undef :
5990                                  $cgi->a({-href => href(action=>"shortlog")}, "..."));
5991        }
5992
5993        if (@taglist) {
5994                git_print_header_div('tags');
5995                git_tags_body(\@taglist, 0, 15,
5996                              $#taglist <=  15 ? undef :
5997                              $cgi->a({-href => href(action=>"tags")}, "..."));
5998        }
5999
6000        if (@headlist) {
6001                git_print_header_div('heads');
6002                git_heads_body(\@headlist, $head, 0, 15,
6003                               $#headlist <= 15 ? undef :
6004                               $cgi->a({-href => href(action=>"heads")}, "..."));
6005        }
6006
6007        if (%remotedata) {
6008                git_print_header_div('remotes');
6009                git_remotes_body(\%remotedata, 15, $head);
6010        }
6011
6012        if (@forklist) {
6013                git_print_header_div('forks');
6014                git_project_list_body(\@forklist, 'age', 0, 15,
6015                                      $#forklist <= 15 ? undef :
6016                                      $cgi->a({-href => href(action=>"forks")}, "..."),
6017                                      'no_header');
6018        }
6019
6020        git_footer_html();
6021}
6022
6023sub git_tag {
6024        my %tag = parse_tag($hash);
6025
6026        if (! %tag) {
6027                die_error(404, "Unknown tag object");
6028        }
6029
6030        my $head = git_get_head_hash($project);
6031        git_header_html();
6032        git_print_page_nav('','', $head,undef,$head);
6033        git_print_header_div('commit', esc_html($tag{'name'}), $hash);
6034        print "<div class=\"title_text\">\n" .
6035              "<table class=\"object_header\">\n" .
6036              "<tr>\n" .
6037              "<td>object</td>\n" .
6038              "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
6039                               $tag{'object'}) . "</td>\n" .
6040              "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
6041                                              $tag{'type'}) . "</td>\n" .
6042              "</tr>\n";
6043        if (defined($tag{'author'})) {
6044                git_print_authorship_rows(\%tag, 'author');
6045        }
6046        print "</table>\n\n" .
6047              "</div>\n";
6048        print "<div class=\"page_body\">";
6049        my $comment = $tag{'comment'};
6050        foreach my $line (@$comment) {
6051                chomp $line;
6052                print esc_html($line, -nbsp=>1) . "<br/>\n";
6053        }
6054        print "</div>\n";
6055        git_footer_html();
6056}
6057
6058sub git_blame_common {
6059        my $format = shift || 'porcelain';
6060        if ($format eq 'porcelain' && $cgi->param('js')) {
6061                $format = 'incremental';
6062                $action = 'blame_incremental'; # for page title etc
6063        }
6064
6065        # permissions
6066        gitweb_check_feature('blame')
6067                or die_error(403, "Blame view not allowed");
6068
6069        # error checking
6070        die_error(400, "No file name given") unless $file_name;
6071        $hash_base ||= git_get_head_hash($project);
6072        die_error(404, "Couldn't find base commit") unless $hash_base;
6073        my %co = parse_commit($hash_base)
6074                or die_error(404, "Commit not found");
6075        my $ftype = "blob";
6076        if (!defined $hash) {
6077                $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
6078                        or die_error(404, "Error looking up file");
6079        } else {
6080                $ftype = git_get_type($hash);
6081                if ($ftype !~ "blob") {
6082                        die_error(400, "Object is not a blob");
6083                }
6084        }
6085
6086        my $fd;
6087        if ($format eq 'incremental') {
6088                # get file contents (as base)
6089                open $fd, "-|", git_cmd(), 'cat-file', 'blob', $hash
6090                        or die_error(500, "Open git-cat-file failed");
6091        } elsif ($format eq 'data') {
6092                # run git-blame --incremental
6093                open $fd, "-|", git_cmd(), "blame", "--incremental",
6094                        $hash_base, "--", $file_name
6095                        or die_error(500, "Open git-blame --incremental failed");
6096        } else {
6097                # run git-blame --porcelain
6098                open $fd, "-|", git_cmd(), "blame", '-p',
6099                        $hash_base, '--', $file_name
6100                        or die_error(500, "Open git-blame --porcelain failed");
6101        }
6102
6103        # incremental blame data returns early
6104        if ($format eq 'data') {
6105                print $cgi->header(
6106                        -type=>"text/plain", -charset => "utf-8",
6107                        -status=> "200 OK");
6108                local $| = 1; # output autoflush
6109                print while <$fd>;
6110                close $fd
6111                        or print "ERROR $!\n";
6112
6113                print 'END';
6114                if (defined $t0 && gitweb_check_feature('timed')) {
6115                        print ' '.
6116                              tv_interval($t0, [ gettimeofday() ]).
6117                              ' '.$number_of_git_cmds;
6118                }
6119                print "\n";
6120
6121                return;
6122        }
6123
6124        # page header
6125        git_header_html();
6126        my $formats_nav =
6127                $cgi->a({-href => href(action=>"blob", -replay=>1)},
6128                        "blob") .
6129                " | ";
6130        if ($format eq 'incremental') {
6131                $formats_nav .=
6132                        $cgi->a({-href => href(action=>"blame", javascript=>0, -replay=>1)},
6133                                "blame") . " (non-incremental)";
6134        } else {
6135                $formats_nav .=
6136                        $cgi->a({-href => href(action=>"blame_incremental", -replay=>1)},
6137                                "blame") . " (incremental)";
6138        }
6139        $formats_nav .=
6140                " | " .
6141                $cgi->a({-href => href(action=>"history", -replay=>1)},
6142                        "history") .
6143                " | " .
6144                $cgi->a({-href => href(action=>$action, file_name=>$file_name)},
6145                        "HEAD");
6146        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
6147        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
6148        git_print_page_path($file_name, $ftype, $hash_base);
6149
6150        # page body
6151        if ($format eq 'incremental') {
6152                print "<noscript>\n<div class=\"error\"><center><b>\n".
6153                      "This page requires JavaScript to run.\n Use ".
6154                      $cgi->a({-href => href(action=>'blame',javascript=>0,-replay=>1)},
6155                              'this page').
6156                      " instead.\n".
6157                      "</b></center></div>\n</noscript>\n";
6158
6159                print qq!<div id="progress_bar" style="width: 100%; background-color: yellow"></div>\n!;
6160        }
6161
6162        print qq!<div class="page_body">\n!;
6163        print qq!<div id="progress_info">... / ...</div>\n!
6164                if ($format eq 'incremental');
6165        print qq!<table id="blame_table" class="blame" width="100%">\n!.
6166              #qq!<col width="5.5em" /><col width="2.5em" /><col width="*" />\n!.
6167              qq!<thead>\n!.
6168              qq!<tr><th>Commit</th><th>Line</th><th>Data</th></tr>\n!.
6169              qq!</thead>\n!.
6170              qq!<tbody>\n!;
6171
6172        my @rev_color = qw(light dark);
6173        my $num_colors = scalar(@rev_color);
6174        my $current_color = 0;
6175
6176        if ($format eq 'incremental') {
6177                my $color_class = $rev_color[$current_color];
6178
6179                #contents of a file
6180                my $linenr = 0;
6181        LINE:
6182                while (my $line = <$fd>) {
6183                        chomp $line;
6184                        $linenr++;
6185
6186                        print qq!<tr id="l$linenr" class="$color_class">!.
6187                              qq!<td class="sha1"><a href=""> </a></td>!.
6188                              qq!<td class="linenr">!.
6189                              qq!<a class="linenr" href="">$linenr</a></td>!;
6190                        print qq!<td class="pre">! . esc_html($line) . "</td>\n";
6191                        print qq!</tr>\n!;
6192                }
6193
6194        } else { # porcelain, i.e. ordinary blame
6195                my %metainfo = (); # saves information about commits
6196
6197                # blame data
6198        LINE:
6199                while (my $line = <$fd>) {
6200                        chomp $line;
6201                        # the header: <SHA-1> <src lineno> <dst lineno> [<lines in group>]
6202                        # no <lines in group> for subsequent lines in group of lines
6203                        my ($full_rev, $orig_lineno, $lineno, $group_size) =
6204                           ($line =~ /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/);
6205                        if (!exists $metainfo{$full_rev}) {
6206                                $metainfo{$full_rev} = { 'nprevious' => 0 };
6207                        }
6208                        my $meta = $metainfo{$full_rev};
6209                        my $data;
6210                        while ($data = <$fd>) {
6211                                chomp $data;
6212                                last if ($data =~ s/^\t//); # contents of line
6213                                if ($data =~ /^(\S+)(?: (.*))?$/) {
6214                                        $meta->{$1} = $2 unless exists $meta->{$1};
6215                                }
6216                                if ($data =~ /^previous /) {
6217                                        $meta->{'nprevious'}++;
6218                                }
6219                        }
6220                        my $short_rev = substr($full_rev, 0, 8);
6221                        my $author = $meta->{'author'};
6222                        my %date =
6223                                parse_date($meta->{'author-time'}, $meta->{'author-tz'});
6224                        my $date = $date{'iso-tz'};
6225                        if ($group_size) {
6226                                $current_color = ($current_color + 1) % $num_colors;
6227                        }
6228                        my $tr_class = $rev_color[$current_color];
6229                        $tr_class .= ' boundary' if (exists $meta->{'boundary'});
6230                        $tr_class .= ' no-previous' if ($meta->{'nprevious'} == 0);
6231                        $tr_class .= ' multiple-previous' if ($meta->{'nprevious'} > 1);
6232                        print "<tr id=\"l$lineno\" class=\"$tr_class\">\n";
6233                        if ($group_size) {
6234                                print "<td class=\"sha1\"";
6235                                print " title=\"". esc_html($author) . ", $date\"";
6236                                print " rowspan=\"$group_size\"" if ($group_size > 1);
6237                                print ">";
6238                                print $cgi->a({-href => href(action=>"commit",
6239                                                             hash=>$full_rev,
6240                                                             file_name=>$file_name)},
6241                                              esc_html($short_rev));
6242                                if ($group_size >= 2) {
6243                                        my @author_initials = ($author =~ /\b([[:upper:]])\B/g);
6244                                        if (@author_initials) {
6245                                                print "<br />" .
6246                                                      esc_html(join('', @author_initials));
6247                                                #           or join('.', ...)
6248                                        }
6249                                }
6250                                print "</td>\n";
6251                        }
6252                        # 'previous' <sha1 of parent commit> <filename at commit>
6253                        if (exists $meta->{'previous'} &&
6254                            $meta->{'previous'} =~ /^([a-fA-F0-9]{40}) (.*)$/) {
6255                                $meta->{'parent'} = $1;
6256                                $meta->{'file_parent'} = unquote($2);
6257                        }
6258                        my $linenr_commit =
6259                                exists($meta->{'parent'}) ?
6260                                $meta->{'parent'} : $full_rev;
6261                        my $linenr_filename =
6262                                exists($meta->{'file_parent'}) ?
6263                                $meta->{'file_parent'} : unquote($meta->{'filename'});
6264                        my $blamed = href(action => 'blame',
6265                                          file_name => $linenr_filename,
6266                                          hash_base => $linenr_commit);
6267                        print "<td class=\"linenr\">";
6268                        print $cgi->a({ -href => "$blamed#l$orig_lineno",
6269                                        -class => "linenr" },
6270                                      esc_html($lineno));
6271                        print "</td>";
6272                        print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
6273                        print "</tr>\n";
6274                } # end while
6275
6276        }
6277
6278        # footer
6279        print "</tbody>\n".
6280              "</table>\n"; # class="blame"
6281        print "</div>\n";   # class="blame_body"
6282        close $fd
6283                or print "Reading blob failed\n";
6284
6285        git_footer_html();
6286}
6287
6288sub git_blame {
6289        git_blame_common();
6290}
6291
6292sub git_blame_incremental {
6293        git_blame_common('incremental');
6294}
6295
6296sub git_blame_data {
6297        git_blame_common('data');
6298}
6299
6300sub git_tags {
6301        my $head = git_get_head_hash($project);
6302        git_header_html();
6303        git_print_page_nav('','', $head,undef,$head,format_ref_views('tags'));
6304        git_print_header_div('summary', $project);
6305
6306        my @tagslist = git_get_tags_list();
6307        if (@tagslist) {
6308                git_tags_body(\@tagslist);
6309        }
6310        git_footer_html();
6311}
6312
6313sub git_heads {
6314        my $head = git_get_head_hash($project);
6315        git_header_html();
6316        git_print_page_nav('','', $head,undef,$head,format_ref_views('heads'));
6317        git_print_header_div('summary', $project);
6318
6319        my @headslist = git_get_heads_list();
6320        if (@headslist) {
6321                git_heads_body(\@headslist, $head);
6322        }
6323        git_footer_html();
6324}
6325
6326# used both for single remote view and for list of all the remotes
6327sub git_remotes {
6328        gitweb_check_feature('remote_heads')
6329                or die_error(403, "Remote heads view is disabled");
6330
6331        my $head = git_get_head_hash($project);
6332        my $remote = $input_params{'hash'};
6333
6334        my $remotedata = git_get_remotes_list($remote);
6335        die_error(500, "Unable to get remote information") unless defined $remotedata;
6336
6337        unless (%$remotedata) {
6338                die_error(404, defined $remote ?
6339                        "Remote $remote not found" :
6340                        "No remotes found");
6341        }
6342
6343        git_header_html(undef, undef, -action_extra => $remote);
6344        git_print_page_nav('', '',  $head, undef, $head,
6345                format_ref_views($remote ? '' : 'remotes'));
6346
6347        fill_remote_heads($remotedata);
6348        if (defined $remote) {
6349                git_print_header_div('remotes', "$remote remote for $project");
6350                git_remote_block($remote, $remotedata->{$remote}, undef, $head);
6351        } else {
6352                git_print_header_div('summary', "$project remotes");
6353                git_remotes_body($remotedata, undef, $head);
6354        }
6355
6356        git_footer_html();
6357}
6358
6359sub git_blob_plain {
6360        my $type = shift;
6361        my $expires;
6362
6363        if (!defined $hash) {
6364                if (defined $file_name) {
6365                        my $base = $hash_base || git_get_head_hash($project);
6366                        $hash = git_get_hash_by_path($base, $file_name, "blob")
6367                                or die_error(404, "Cannot find file");
6368                } else {
6369                        die_error(400, "No file name defined");
6370                }
6371        } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
6372                # blobs defined by non-textual hash id's can be cached
6373                $expires = "+1d";
6374        }
6375
6376        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
6377                or die_error(500, "Open git-cat-file blob '$hash' failed");
6378
6379        # content-type (can include charset)
6380        $type = blob_contenttype($fd, $file_name, $type);
6381
6382        # "save as" filename, even when no $file_name is given
6383        my $save_as = "$hash";
6384        if (defined $file_name) {
6385                $save_as = $file_name;
6386        } elsif ($type =~ m/^text\//) {
6387                $save_as .= '.txt';
6388        }
6389
6390        # With XSS prevention on, blobs of all types except a few known safe
6391        # ones are served with "Content-Disposition: attachment" to make sure
6392        # they don't run in our security domain.  For certain image types,
6393        # blob view writes an <img> tag referring to blob_plain view, and we
6394        # want to be sure not to break that by serving the image as an
6395        # attachment (though Firefox 3 doesn't seem to care).
6396        my $sandbox = $prevent_xss &&
6397                $type !~ m!^(?:text/[a-z]+|image/(?:gif|png|jpeg))(?:[ ;]|$)!;
6398
6399        # serve text/* as text/plain
6400        if ($prevent_xss &&
6401            ($type =~ m!^text/[a-z]+\b(.*)$! ||
6402             ($type =~ m!^[a-z]+/[a-z]\+xml\b(.*)$! && -T $fd))) {
6403                my $rest = $1;
6404                $rest = defined $rest ? $rest : '';
6405                $type = "text/plain$rest";
6406        }
6407
6408        print $cgi->header(
6409                -type => $type,
6410                -expires => $expires,
6411                -content_disposition =>
6412                        ($sandbox ? 'attachment' : 'inline')
6413                        . '; filename="' . $save_as . '"');
6414        local $/ = undef;
6415        binmode STDOUT, ':raw';
6416        print <$fd>;
6417        binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
6418        close $fd;
6419}
6420
6421sub git_blob {
6422        my $expires;
6423
6424        if (!defined $hash) {
6425                if (defined $file_name) {
6426                        my $base = $hash_base || git_get_head_hash($project);
6427                        $hash = git_get_hash_by_path($base, $file_name, "blob")
6428                                or die_error(404, "Cannot find file");
6429                } else {
6430                        die_error(400, "No file name defined");
6431                }
6432        } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
6433                # blobs defined by non-textual hash id's can be cached
6434                $expires = "+1d";
6435        }
6436
6437        my $have_blame = gitweb_check_feature('blame');
6438        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
6439                or die_error(500, "Couldn't cat $file_name, $hash");
6440        my $mimetype = blob_mimetype($fd, $file_name);
6441        # use 'blob_plain' (aka 'raw') view for files that cannot be displayed
6442        if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)! && -B $fd) {
6443                close $fd;
6444                return git_blob_plain($mimetype);
6445        }
6446        # we can have blame only for text/* mimetype
6447        $have_blame &&= ($mimetype =~ m!^text/!);
6448
6449        my $highlight = gitweb_check_feature('highlight');
6450        my $syntax = guess_file_syntax($highlight, $mimetype, $file_name);
6451        $fd = run_highlighter($fd, $highlight, $syntax)
6452                if $syntax;
6453
6454        git_header_html(undef, $expires);
6455        my $formats_nav = '';
6456        if (defined $hash_base && (my %co = parse_commit($hash_base))) {
6457                if (defined $file_name) {
6458                        if ($have_blame) {
6459                                $formats_nav .=
6460                                        $cgi->a({-href => href(action=>"blame", -replay=>1)},
6461                                                "blame") .
6462                                        " | ";
6463                        }
6464                        $formats_nav .=
6465                                $cgi->a({-href => href(action=>"history", -replay=>1)},
6466                                        "history") .
6467                                " | " .
6468                                $cgi->a({-href => href(action=>"blob_plain", -replay=>1)},
6469                                        "raw") .
6470                                " | " .
6471                                $cgi->a({-href => href(action=>"blob",
6472                                                       hash_base=>"HEAD", file_name=>$file_name)},
6473                                        "HEAD");
6474                } else {
6475                        $formats_nav .=
6476                                $cgi->a({-href => href(action=>"blob_plain", -replay=>1)},
6477                                        "raw");
6478                }
6479                git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
6480                git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
6481        } else {
6482                print "<div class=\"page_nav\">\n" .
6483                      "<br/><br/></div>\n" .
6484                      "<div class=\"title\">".esc_html($hash)."</div>\n";
6485        }
6486        git_print_page_path($file_name, "blob", $hash_base);
6487        print "<div class=\"page_body\">\n";
6488        if ($mimetype =~ m!^image/!) {
6489                print qq!<img type="!.esc_attr($mimetype).qq!"!;
6490                if ($file_name) {
6491                        print qq! alt="!.esc_attr($file_name).qq!" title="!.esc_attr($file_name).qq!"!;
6492                }
6493                print qq! src="! .
6494                      href(action=>"blob_plain", hash=>$hash,
6495                           hash_base=>$hash_base, file_name=>$file_name) .
6496                      qq!" />\n!;
6497        } else {
6498                my $nr;
6499                while (my $line = <$fd>) {
6500                        chomp $line;
6501                        $nr++;
6502                        $line = untabify($line);
6503                        printf qq!<div class="pre"><a id="l%i" href="%s#l%i" class="linenr">%4i</a> %s</div>\n!,
6504                               $nr, esc_attr(href(-replay => 1)), $nr, $nr,
6505                               $syntax ? sanitize($line) : esc_html($line, -nbsp=>1);
6506                }
6507        }
6508        close $fd
6509                or print "Reading blob failed.\n";
6510        print "</div>";
6511        git_footer_html();
6512}
6513
6514sub git_tree {
6515        if (!defined $hash_base) {
6516                $hash_base = "HEAD";
6517        }
6518        if (!defined $hash) {
6519                if (defined $file_name) {
6520                        $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
6521                } else {
6522                        $hash = $hash_base;
6523                }
6524        }
6525        die_error(404, "No such tree") unless defined($hash);
6526
6527        my $show_sizes = gitweb_check_feature('show-sizes');
6528        my $have_blame = gitweb_check_feature('blame');
6529
6530        my @entries = ();
6531        {
6532                local $/ = "\0";
6533                open my $fd, "-|", git_cmd(), "ls-tree", '-z',
6534                        ($show_sizes ? '-l' : ()), @extra_options, $hash
6535                        or die_error(500, "Open git-ls-tree failed");
6536                @entries = map { chomp; $_ } <$fd>;
6537                close $fd
6538                        or die_error(404, "Reading tree failed");
6539        }
6540
6541        my $refs = git_get_references();
6542        my $ref = format_ref_marker($refs, $hash_base);
6543        git_header_html();
6544        my $basedir = '';
6545        if (defined $hash_base && (my %co = parse_commit($hash_base))) {
6546                my @views_nav = ();
6547                if (defined $file_name) {
6548                        push @views_nav,
6549                                $cgi->a({-href => href(action=>"history", -replay=>1)},
6550                                        "history"),
6551                                $cgi->a({-href => href(action=>"tree",
6552                                                       hash_base=>"HEAD", file_name=>$file_name)},
6553                                        "HEAD"),
6554                }
6555                my $snapshot_links = format_snapshot_links($hash);
6556                if (defined $snapshot_links) {
6557                        # FIXME: Should be available when we have no hash base as well.
6558                        push @views_nav, $snapshot_links;
6559                }
6560                git_print_page_nav('tree','', $hash_base, undef, undef,
6561                                   join(' | ', @views_nav));
6562                git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
6563        } else {
6564                undef $hash_base;
6565                print "<div class=\"page_nav\">\n";
6566                print "<br/><br/></div>\n";
6567                print "<div class=\"title\">".esc_html($hash)."</div>\n";
6568        }
6569        if (defined $file_name) {
6570                $basedir = $file_name;
6571                if ($basedir ne '' && substr($basedir, -1) ne '/') {
6572                        $basedir .= '/';
6573                }
6574                git_print_page_path($file_name, 'tree', $hash_base);
6575        }
6576        print "<div class=\"page_body\">\n";
6577        print "<table class=\"tree\">\n";
6578        my $alternate = 1;
6579        # '..' (top directory) link if possible
6580        if (defined $hash_base &&
6581            defined $file_name && $file_name =~ m![^/]+$!) {
6582                if ($alternate) {
6583                        print "<tr class=\"dark\">\n";
6584                } else {
6585                        print "<tr class=\"light\">\n";
6586                }
6587                $alternate ^= 1;
6588
6589                my $up = $file_name;
6590                $up =~ s!/?[^/]+$!!;
6591                undef $up unless $up;
6592                # based on git_print_tree_entry
6593                print '<td class="mode">' . mode_str('040000') . "</td>\n";
6594                print '<td class="size">&nbsp;</td>'."\n" if $show_sizes;
6595                print '<td class="list">';
6596                print $cgi->a({-href => href(action=>"tree",
6597                                             hash_base=>$hash_base,
6598                                             file_name=>$up)},
6599                              "..");
6600                print "</td>\n";
6601                print "<td class=\"link\"></td>\n";
6602
6603                print "</tr>\n";
6604        }
6605        foreach my $line (@entries) {
6606                my %t = parse_ls_tree_line($line, -z => 1, -l => $show_sizes);
6607
6608                if ($alternate) {
6609                        print "<tr class=\"dark\">\n";
6610                } else {
6611                        print "<tr class=\"light\">\n";
6612                }
6613                $alternate ^= 1;
6614
6615                git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
6616
6617                print "</tr>\n";
6618        }
6619        print "</table>\n" .
6620              "</div>";
6621        git_footer_html();
6622}
6623
6624sub snapshot_name {
6625        my ($project, $hash) = @_;
6626
6627        # path/to/project.git  -> project
6628        # path/to/project/.git -> project
6629        my $name = to_utf8($project);
6630        $name =~ s,([^/])/*\.git$,$1,;
6631        $name = basename($name);
6632        # sanitize name
6633        $name =~ s/[[:cntrl:]]/?/g;
6634
6635        my $ver = $hash;
6636        if ($hash =~ /^[0-9a-fA-F]+$/) {
6637                # shorten SHA-1 hash
6638                my $full_hash = git_get_full_hash($project, $hash);
6639                if ($full_hash =~ /^$hash/ && length($hash) > 7) {
6640                        $ver = git_get_short_hash($project, $hash);
6641                }
6642        } elsif ($hash =~ m!^refs/tags/(.*)$!) {
6643                # tags don't need shortened SHA-1 hash
6644                $ver = $1;
6645        } else {
6646                # branches and other need shortened SHA-1 hash
6647                if ($hash =~ m!^refs/(?:heads|remotes)/(.*)$!) {
6648                        $ver = $1;
6649                }
6650                $ver .= '-' . git_get_short_hash($project, $hash);
6651        }
6652        # in case of hierarchical branch names
6653        $ver =~ s!/!.!g;
6654
6655        # name = project-version_string
6656        $name = "$name-$ver";
6657
6658        return wantarray ? ($name, $name) : $name;
6659}
6660
6661sub git_snapshot {
6662        my $format = $input_params{'snapshot_format'};
6663        if (!@snapshot_fmts) {
6664                die_error(403, "Snapshots not allowed");
6665        }
6666        # default to first supported snapshot format
6667        $format ||= $snapshot_fmts[0];
6668        if ($format !~ m/^[a-z0-9]+$/) {
6669                die_error(400, "Invalid snapshot format parameter");
6670        } elsif (!exists($known_snapshot_formats{$format})) {
6671                die_error(400, "Unknown snapshot format");
6672        } elsif ($known_snapshot_formats{$format}{'disabled'}) {
6673                die_error(403, "Snapshot format not allowed");
6674        } elsif (!grep($_ eq $format, @snapshot_fmts)) {
6675                die_error(403, "Unsupported snapshot format");
6676        }
6677
6678        my $type = git_get_type("$hash^{}");
6679        if (!$type) {
6680                die_error(404, 'Object does not exist');
6681        }  elsif ($type eq 'blob') {
6682                die_error(400, 'Object is not a tree-ish');
6683        }
6684
6685        my ($name, $prefix) = snapshot_name($project, $hash);
6686        my $filename = "$name$known_snapshot_formats{$format}{'suffix'}";
6687        my $cmd = quote_command(
6688                git_cmd(), 'archive',
6689                "--format=$known_snapshot_formats{$format}{'format'}",
6690                "--prefix=$prefix/", $hash);
6691        if (exists $known_snapshot_formats{$format}{'compressor'}) {
6692                $cmd .= ' | ' . quote_command(@{$known_snapshot_formats{$format}{'compressor'}});
6693        }
6694
6695        $filename =~ s/(["\\])/\\$1/g;
6696        print $cgi->header(
6697                -type => $known_snapshot_formats{$format}{'type'},
6698                -content_disposition => 'inline; filename="' . $filename . '"',
6699                -status => '200 OK');
6700
6701        open my $fd, "-|", $cmd
6702                or die_error(500, "Execute git-archive failed");
6703        binmode STDOUT, ':raw';
6704        print <$fd>;
6705        binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
6706        close $fd;
6707}
6708
6709sub git_log_generic {
6710        my ($fmt_name, $body_subr, $base, $parent, $file_name, $file_hash) = @_;
6711
6712        my $head = git_get_head_hash($project);
6713        if (!defined $base) {
6714                $base = $head;
6715        }
6716        if (!defined $page) {
6717                $page = 0;
6718        }
6719        my $refs = git_get_references();
6720
6721        my $commit_hash = $base;
6722        if (defined $parent) {
6723                $commit_hash = "$parent..$base";
6724        }
6725        my @commitlist =
6726                parse_commits($commit_hash, 101, (100 * $page),
6727                              defined $file_name ? ($file_name, "--full-history") : ());
6728
6729        my $ftype;
6730        if (!defined $file_hash && defined $file_name) {
6731                # some commits could have deleted file in question,
6732                # and not have it in tree, but one of them has to have it
6733                for (my $i = 0; $i < @commitlist; $i++) {
6734                        $file_hash = git_get_hash_by_path($commitlist[$i]{'id'}, $file_name);
6735                        last if defined $file_hash;
6736                }
6737        }
6738        if (defined $file_hash) {
6739                $ftype = git_get_type($file_hash);
6740        }
6741        if (defined $file_name && !defined $ftype) {
6742                die_error(500, "Unknown type of object");
6743        }
6744        my %co;
6745        if (defined $file_name) {
6746                %co = parse_commit($base)
6747                        or die_error(404, "Unknown commit object");
6748        }
6749
6750
6751        my $paging_nav = format_paging_nav($fmt_name, $page, $#commitlist >= 100);
6752        my $next_link = '';
6753        if ($#commitlist >= 100) {
6754                $next_link =
6755                        $cgi->a({-href => href(-replay=>1, page=>$page+1),
6756                                 -accesskey => "n", -title => "Alt-n"}, "next");
6757        }
6758        my $patch_max = gitweb_get_feature('patches');
6759        if ($patch_max && !defined $file_name) {
6760                if ($patch_max < 0 || @commitlist <= $patch_max) {
6761                        $paging_nav .= " &sdot; " .
6762                                $cgi->a({-href => href(action=>"patches", -replay=>1)},
6763                                        "patches");
6764                }
6765        }
6766
6767        git_header_html();
6768        git_print_page_nav($fmt_name,'', $hash,$hash,$hash, $paging_nav);
6769        if (defined $file_name) {
6770                git_print_header_div('commit', esc_html($co{'title'}), $base);
6771        } else {
6772                git_print_header_div('summary', $project)
6773        }
6774        git_print_page_path($file_name, $ftype, $hash_base)
6775                if (defined $file_name);
6776
6777        $body_subr->(\@commitlist, 0, 99, $refs, $next_link,
6778                     $file_name, $file_hash, $ftype);
6779
6780        git_footer_html();
6781}
6782
6783sub git_log {
6784        git_log_generic('log', \&git_log_body,
6785                        $hash, $hash_parent);
6786}
6787
6788sub git_commit {
6789        $hash ||= $hash_base || "HEAD";
6790        my %co = parse_commit($hash)
6791            or die_error(404, "Unknown commit object");
6792
6793        my $parent  = $co{'parent'};
6794        my $parents = $co{'parents'}; # listref
6795
6796        # we need to prepare $formats_nav before any parameter munging
6797        my $formats_nav;
6798        if (!defined $parent) {
6799                # --root commitdiff
6800                $formats_nav .= '(initial)';
6801        } elsif (@$parents == 1) {
6802                # single parent commit
6803                $formats_nav .=
6804                        '(parent: ' .
6805                        $cgi->a({-href => href(action=>"commit",
6806                                               hash=>$parent)},
6807                                esc_html(substr($parent, 0, 7))) .
6808                        ')';
6809        } else {
6810                # merge commit
6811                $formats_nav .=
6812                        '(merge: ' .
6813                        join(' ', map {
6814                                $cgi->a({-href => href(action=>"commit",
6815                                                       hash=>$_)},
6816                                        esc_html(substr($_, 0, 7)));
6817                        } @$parents ) .
6818                        ')';
6819        }
6820        if (gitweb_check_feature('patches') && @$parents <= 1) {
6821                $formats_nav .= " | " .
6822                        $cgi->a({-href => href(action=>"patch", -replay=>1)},
6823                                "patch");
6824        }
6825
6826        if (!defined $parent) {
6827                $parent = "--root";
6828        }
6829        my @difftree;
6830        open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
6831                @diff_opts,
6832                (@$parents <= 1 ? $parent : '-c'),
6833                $hash, "--"
6834                or die_error(500, "Open git-diff-tree failed");
6835        @difftree = map { chomp; $_ } <$fd>;
6836        close $fd or die_error(404, "Reading git-diff-tree failed");
6837
6838        # non-textual hash id's can be cached
6839        my $expires;
6840        if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
6841                $expires = "+1d";
6842        }
6843        my $refs = git_get_references();
6844        my $ref = format_ref_marker($refs, $co{'id'});
6845
6846        git_header_html(undef, $expires);
6847        git_print_page_nav('commit', '',
6848                           $hash, $co{'tree'}, $hash,
6849                           $formats_nav);
6850
6851        if (defined $co{'parent'}) {
6852                git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
6853        } else {
6854                git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
6855        }
6856        print "<div class=\"title_text\">\n" .
6857              "<table class=\"object_header\">\n";
6858        git_print_authorship_rows(\%co);
6859        print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
6860        print "<tr>" .
6861              "<td>tree</td>" .
6862              "<td class=\"sha1\">" .
6863              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
6864                       class => "list"}, $co{'tree'}) .
6865              "</td>" .
6866              "<td class=\"link\">" .
6867              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
6868                      "tree");
6869        my $snapshot_links = format_snapshot_links($hash);
6870        if (defined $snapshot_links) {
6871                print " | " . $snapshot_links;
6872        }
6873        print "</td>" .
6874              "</tr>\n";
6875
6876        foreach my $par (@$parents) {
6877                print "<tr>" .
6878                      "<td>parent</td>" .
6879                      "<td class=\"sha1\">" .
6880                      $cgi->a({-href => href(action=>"commit", hash=>$par),
6881                               class => "list"}, $par) .
6882                      "</td>" .
6883                      "<td class=\"link\">" .
6884                      $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
6885                      " | " .
6886                      $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
6887                      "</td>" .
6888                      "</tr>\n";
6889        }
6890        print "</table>".
6891              "</div>\n";
6892
6893        print "<div class=\"page_body\">\n";
6894        git_print_log($co{'comment'});
6895        print "</div>\n";
6896
6897        git_difftree_body(\@difftree, $hash, @$parents);
6898
6899        git_footer_html();
6900}
6901
6902sub git_object {
6903        # object is defined by:
6904        # - hash or hash_base alone
6905        # - hash_base and file_name
6906        my $type;
6907
6908        # - hash or hash_base alone
6909        if ($hash || ($hash_base && !defined $file_name)) {
6910                my $object_id = $hash || $hash_base;
6911
6912                open my $fd, "-|", quote_command(
6913                        git_cmd(), 'cat-file', '-t', $object_id) . ' 2> /dev/null'
6914                        or die_error(404, "Object does not exist");
6915                $type = <$fd>;
6916                chomp $type;
6917                close $fd
6918                        or die_error(404, "Object does not exist");
6919
6920        # - hash_base and file_name
6921        } elsif ($hash_base && defined $file_name) {
6922                $file_name =~ s,/+$,,;
6923
6924                system(git_cmd(), "cat-file", '-e', $hash_base) == 0
6925                        or die_error(404, "Base object does not exist");
6926
6927                # here errors should not hapen
6928                open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
6929                        or die_error(500, "Open git-ls-tree failed");
6930                my $line = <$fd>;
6931                close $fd;
6932
6933                #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
6934                unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
6935                        die_error(404, "File or directory for given base does not exist");
6936                }
6937                $type = $2;
6938                $hash = $3;
6939        } else {
6940                die_error(400, "Not enough information to find object");
6941        }
6942
6943        print $cgi->redirect(-uri => href(action=>$type, -full=>1,
6944                                          hash=>$hash, hash_base=>$hash_base,
6945                                          file_name=>$file_name),
6946                             -status => '302 Found');
6947}
6948
6949sub git_blobdiff {
6950        my $format = shift || 'html';
6951
6952        my $fd;
6953        my @difftree;
6954        my %diffinfo;
6955        my $expires;
6956
6957        # preparing $fd and %diffinfo for git_patchset_body
6958        # new style URI
6959        if (defined $hash_base && defined $hash_parent_base) {
6960                if (defined $file_name) {
6961                        # read raw output
6962                        open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
6963                                $hash_parent_base, $hash_base,
6964                                "--", (defined $file_parent ? $file_parent : ()), $file_name
6965                                or die_error(500, "Open git-diff-tree failed");
6966                        @difftree = map { chomp; $_ } <$fd>;
6967                        close $fd
6968                                or die_error(404, "Reading git-diff-tree failed");
6969                        @difftree
6970                                or die_error(404, "Blob diff not found");
6971
6972                } elsif (defined $hash &&
6973                         $hash =~ /[0-9a-fA-F]{40}/) {
6974                        # try to find filename from $hash
6975
6976                        # read filtered raw output
6977                        open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
6978                                $hash_parent_base, $hash_base, "--"
6979                                or die_error(500, "Open git-diff-tree failed");
6980                        @difftree =
6981                                # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
6982                                # $hash == to_id
6983                                grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
6984                                map { chomp; $_ } <$fd>;
6985                        close $fd
6986                                or die_error(404, "Reading git-diff-tree failed");
6987                        @difftree
6988                                or die_error(404, "Blob diff not found");
6989
6990                } else {
6991                        die_error(400, "Missing one of the blob diff parameters");
6992                }
6993
6994                if (@difftree > 1) {
6995                        die_error(400, "Ambiguous blob diff specification");
6996                }
6997
6998                %diffinfo = parse_difftree_raw_line($difftree[0]);
6999                $file_parent ||= $diffinfo{'from_file'} || $file_name;
7000                $file_name   ||= $diffinfo{'to_file'};
7001
7002                $hash_parent ||= $diffinfo{'from_id'};
7003                $hash        ||= $diffinfo{'to_id'};
7004
7005                # non-textual hash id's can be cached
7006                if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
7007                    $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
7008                        $expires = '+1d';
7009                }
7010
7011                # open patch output
7012                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
7013                        '-p', ($format eq 'html' ? "--full-index" : ()),
7014                        $hash_parent_base, $hash_base,
7015                        "--", (defined $file_parent ? $file_parent : ()), $file_name
7016                        or die_error(500, "Open git-diff-tree failed");
7017        }
7018
7019        # old/legacy style URI -- not generated anymore since 1.4.3.
7020        if (!%diffinfo) {
7021                die_error('404 Not Found', "Missing one of the blob diff parameters")
7022        }
7023
7024        # header
7025        if ($format eq 'html') {
7026                my $formats_nav =
7027                        $cgi->a({-href => href(action=>"blobdiff_plain", -replay=>1)},
7028                                "raw");
7029                git_header_html(undef, $expires);
7030                if (defined $hash_base && (my %co = parse_commit($hash_base))) {
7031                        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
7032                        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
7033                } else {
7034                        print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
7035                        print "<div class=\"title\">".esc_html("$hash vs $hash_parent")."</div>\n";
7036                }
7037                if (defined $file_name) {
7038                        git_print_page_path($file_name, "blob", $hash_base);
7039                } else {
7040                        print "<div class=\"page_path\"></div>\n";
7041                }
7042
7043        } elsif ($format eq 'plain') {
7044                print $cgi->header(
7045                        -type => 'text/plain',
7046                        -charset => 'utf-8',
7047                        -expires => $expires,
7048                        -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
7049
7050                print "X-Git-Url: " . $cgi->self_url() . "\n\n";
7051
7052        } else {
7053                die_error(400, "Unknown blobdiff format");
7054        }
7055
7056        # patch
7057        if ($format eq 'html') {
7058                print "<div class=\"page_body\">\n";
7059
7060                git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
7061                close $fd;
7062
7063                print "</div>\n"; # class="page_body"
7064                git_footer_html();
7065
7066        } else {
7067                while (my $line = <$fd>) {
7068                        $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
7069                        $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
7070
7071                        print $line;
7072
7073                        last if $line =~ m!^\+\+\+!;
7074                }
7075                local $/ = undef;
7076                print <$fd>;
7077                close $fd;
7078        }
7079}
7080
7081sub git_blobdiff_plain {
7082        git_blobdiff('plain');
7083}
7084
7085sub git_commitdiff {
7086        my %params = @_;
7087        my $format = $params{-format} || 'html';
7088
7089        my ($patch_max) = gitweb_get_feature('patches');
7090        if ($format eq 'patch') {
7091                die_error(403, "Patch view not allowed") unless $patch_max;
7092        }
7093
7094        $hash ||= $hash_base || "HEAD";
7095        my %co = parse_commit($hash)
7096            or die_error(404, "Unknown commit object");
7097
7098        # choose format for commitdiff for merge
7099        if (! defined $hash_parent && @{$co{'parents'}} > 1) {
7100                $hash_parent = '--cc';
7101        }
7102        # we need to prepare $formats_nav before almost any parameter munging
7103        my $formats_nav;
7104        if ($format eq 'html') {
7105                $formats_nav =
7106                        $cgi->a({-href => href(action=>"commitdiff_plain", -replay=>1)},
7107                                "raw");
7108                if ($patch_max && @{$co{'parents'}} <= 1) {
7109                        $formats_nav .= " | " .
7110                                $cgi->a({-href => href(action=>"patch", -replay=>1)},
7111                                        "patch");
7112                }
7113
7114                if (defined $hash_parent &&
7115                    $hash_parent ne '-c' && $hash_parent ne '--cc') {
7116                        # commitdiff with two commits given
7117                        my $hash_parent_short = $hash_parent;
7118                        if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
7119                                $hash_parent_short = substr($hash_parent, 0, 7);
7120                        }
7121                        $formats_nav .=
7122                                ' (from';
7123                        for (my $i = 0; $i < @{$co{'parents'}}; $i++) {
7124                                if ($co{'parents'}[$i] eq $hash_parent) {
7125                                        $formats_nav .= ' parent ' . ($i+1);
7126                                        last;
7127                                }
7128                        }
7129                        $formats_nav .= ': ' .
7130                                $cgi->a({-href => href(action=>"commitdiff",
7131                                                       hash=>$hash_parent)},
7132                                        esc_html($hash_parent_short)) .
7133                                ')';
7134                } elsif (!$co{'parent'}) {
7135                        # --root commitdiff
7136                        $formats_nav .= ' (initial)';
7137                } elsif (scalar @{$co{'parents'}} == 1) {
7138                        # single parent commit
7139                        $formats_nav .=
7140                                ' (parent: ' .
7141                                $cgi->a({-href => href(action=>"commitdiff",
7142                                                       hash=>$co{'parent'})},
7143                                        esc_html(substr($co{'parent'}, 0, 7))) .
7144                                ')';
7145                } else {
7146                        # merge commit
7147                        if ($hash_parent eq '--cc') {
7148                                $formats_nav .= ' | ' .
7149                                        $cgi->a({-href => href(action=>"commitdiff",
7150                                                               hash=>$hash, hash_parent=>'-c')},
7151                                                'combined');
7152                        } else { # $hash_parent eq '-c'
7153                                $formats_nav .= ' | ' .
7154                                        $cgi->a({-href => href(action=>"commitdiff",
7155                                                               hash=>$hash, hash_parent=>'--cc')},
7156                                                'compact');
7157                        }
7158                        $formats_nav .=
7159                                ' (merge: ' .
7160                                join(' ', map {
7161                                        $cgi->a({-href => href(action=>"commitdiff",
7162                                                               hash=>$_)},
7163                                                esc_html(substr($_, 0, 7)));
7164                                } @{$co{'parents'}} ) .
7165                                ')';
7166                }
7167        }
7168
7169        my $hash_parent_param = $hash_parent;
7170        if (!defined $hash_parent_param) {
7171                # --cc for multiple parents, --root for parentless
7172                $hash_parent_param =
7173                        @{$co{'parents'}} > 1 ? '--cc' : $co{'parent'} || '--root';
7174        }
7175
7176        # read commitdiff
7177        my $fd;
7178        my @difftree;
7179        if ($format eq 'html') {
7180                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
7181                        "--no-commit-id", "--patch-with-raw", "--full-index",
7182                        $hash_parent_param, $hash, "--"
7183                        or die_error(500, "Open git-diff-tree failed");
7184
7185                while (my $line = <$fd>) {
7186                        chomp $line;
7187                        # empty line ends raw part of diff-tree output
7188                        last unless $line;
7189                        push @difftree, scalar parse_difftree_raw_line($line);
7190                }
7191
7192        } elsif ($format eq 'plain') {
7193                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
7194                        '-p', $hash_parent_param, $hash, "--"
7195                        or die_error(500, "Open git-diff-tree failed");
7196        } elsif ($format eq 'patch') {
7197                # For commit ranges, we limit the output to the number of
7198                # patches specified in the 'patches' feature.
7199                # For single commits, we limit the output to a single patch,
7200                # diverging from the git-format-patch default.
7201                my @commit_spec = ();
7202                if ($hash_parent) {
7203                        if ($patch_max > 0) {
7204                                push @commit_spec, "-$patch_max";
7205                        }
7206                        push @commit_spec, '-n', "$hash_parent..$hash";
7207                } else {
7208                        if ($params{-single}) {
7209                                push @commit_spec, '-1';
7210                        } else {
7211                                if ($patch_max > 0) {
7212                                        push @commit_spec, "-$patch_max";
7213                                }
7214                                push @commit_spec, "-n";
7215                        }
7216                        push @commit_spec, '--root', $hash;
7217                }
7218                open $fd, "-|", git_cmd(), "format-patch", @diff_opts,
7219                        '--encoding=utf8', '--stdout', @commit_spec
7220                        or die_error(500, "Open git-format-patch failed");
7221        } else {
7222                die_error(400, "Unknown commitdiff format");
7223        }
7224
7225        # non-textual hash id's can be cached
7226        my $expires;
7227        if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
7228                $expires = "+1d";
7229        }
7230
7231        # write commit message
7232        if ($format eq 'html') {
7233                my $refs = git_get_references();
7234                my $ref = format_ref_marker($refs, $co{'id'});
7235
7236                git_header_html(undef, $expires);
7237                git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
7238                git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
7239                print "<div class=\"title_text\">\n" .
7240                      "<table class=\"object_header\">\n";
7241                git_print_authorship_rows(\%co);
7242                print "</table>".
7243                      "</div>\n";
7244                print "<div class=\"page_body\">\n";
7245                if (@{$co{'comment'}} > 1) {
7246                        print "<div class=\"log\">\n";
7247                        git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
7248                        print "</div>\n"; # class="log"
7249                }
7250
7251        } elsif ($format eq 'plain') {
7252                my $refs = git_get_references("tags");
7253                my $tagname = git_get_rev_name_tags($hash);
7254                my $filename = basename($project) . "-$hash.patch";
7255
7256                print $cgi->header(
7257                        -type => 'text/plain',
7258                        -charset => 'utf-8',
7259                        -expires => $expires,
7260                        -content_disposition => 'inline; filename="' . "$filename" . '"');
7261                my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
7262                print "From: " . to_utf8($co{'author'}) . "\n";
7263                print "Date: $ad{'rfc2822'} ($ad{'tz_local'})\n";
7264                print "Subject: " . to_utf8($co{'title'}) . "\n";
7265
7266                print "X-Git-Tag: $tagname\n" if $tagname;
7267                print "X-Git-Url: " . $cgi->self_url() . "\n\n";
7268
7269                foreach my $line (@{$co{'comment'}}) {
7270                        print to_utf8($line) . "\n";
7271                }
7272                print "---\n\n";
7273        } elsif ($format eq 'patch') {
7274                my $filename = basename($project) . "-$hash.patch";
7275
7276                print $cgi->header(
7277                        -type => 'text/plain',
7278                        -charset => 'utf-8',
7279                        -expires => $expires,
7280                        -content_disposition => 'inline; filename="' . "$filename" . '"');
7281        }
7282
7283        # write patch
7284        if ($format eq 'html') {
7285                my $use_parents = !defined $hash_parent ||
7286                        $hash_parent eq '-c' || $hash_parent eq '--cc';
7287                git_difftree_body(\@difftree, $hash,
7288                                  $use_parents ? @{$co{'parents'}} : $hash_parent);
7289                print "<br/>\n";
7290
7291                git_patchset_body($fd, \@difftree, $hash,
7292                                  $use_parents ? @{$co{'parents'}} : $hash_parent);
7293                close $fd;
7294                print "</div>\n"; # class="page_body"
7295                git_footer_html();
7296
7297        } elsif ($format eq 'plain') {
7298                local $/ = undef;
7299                print <$fd>;
7300                close $fd
7301                        or print "Reading git-diff-tree failed\n";
7302        } elsif ($format eq 'patch') {
7303                local $/ = undef;
7304                print <$fd>;
7305                close $fd
7306                        or print "Reading git-format-patch failed\n";
7307        }
7308}
7309
7310sub git_commitdiff_plain {
7311        git_commitdiff(-format => 'plain');
7312}
7313
7314# format-patch-style patches
7315sub git_patch {
7316        git_commitdiff(-format => 'patch', -single => 1);
7317}
7318
7319sub git_patches {
7320        git_commitdiff(-format => 'patch');
7321}
7322
7323sub git_history {
7324        git_log_generic('history', \&git_history_body,
7325                        $hash_base, $hash_parent_base,
7326                        $file_name, $hash);
7327}
7328
7329sub git_search {
7330        $searchtype ||= 'commit';
7331
7332        # check if appropriate features are enabled
7333        gitweb_check_feature('search')
7334                or die_error(403, "Search is disabled");
7335        if ($searchtype eq 'pickaxe') {
7336                # pickaxe may take all resources of your box and run for several minutes
7337                # with every query - so decide by yourself how public you make this feature
7338                gitweb_check_feature('pickaxe')
7339                        or die_error(403, "Pickaxe search is disabled");
7340        }
7341        if ($searchtype eq 'grep') {
7342                # grep search might be potentially CPU-intensive, too
7343                gitweb_check_feature('grep')
7344                        or die_error(403, "Grep search is disabled");
7345        }
7346
7347        if (!defined $searchtext) {
7348                die_error(400, "Text field is empty");
7349        }
7350        if (!defined $hash) {
7351                $hash = git_get_head_hash($project);
7352        }
7353        my %co = parse_commit($hash);
7354        if (!%co) {
7355                die_error(404, "Unknown commit object");
7356        }
7357        if (!defined $page) {
7358                $page = 0;
7359        }
7360
7361        if ($searchtype eq 'commit' ||
7362            $searchtype eq 'author' ||
7363            $searchtype eq 'committer') {
7364                git_search_message(%co);
7365        } elsif ($searchtype eq 'pickaxe') {
7366                git_search_changes(%co);
7367        } elsif ($searchtype eq 'grep') {
7368                git_search_files(%co);
7369        } else {
7370                die_error(400, "Unknown search type");
7371        }
7372}
7373
7374sub git_search_help {
7375        git_header_html();
7376        git_print_page_nav('','', $hash,$hash,$hash);
7377        print <<EOT;
7378<p><strong>Pattern</strong> is by default a normal string that is matched precisely (but without
7379regard to case, except in the case of pickaxe). However, when you check the <em>re</em> checkbox,
7380the pattern entered is recognized as the POSIX extended
7381<a href="http://en.wikipedia.org/wiki/Regular_expression">regular expression</a> (also case
7382insensitive).</p>
7383<dl>
7384<dt><b>commit</b></dt>
7385<dd>The commit messages and authorship information will be scanned for the given pattern.</dd>
7386EOT
7387        my $have_grep = gitweb_check_feature('grep');
7388        if ($have_grep) {
7389                print <<EOT;
7390<dt><b>grep</b></dt>
7391<dd>All files in the currently selected tree (HEAD unless you are explicitly browsing
7392    a different one) are searched for the given pattern. On large trees, this search can take
7393a while and put some strain on the server, so please use it with some consideration. Note that
7394due to git-grep peculiarity, currently if regexp mode is turned off, the matches are
7395case-sensitive.</dd>
7396EOT
7397        }
7398        print <<EOT;
7399<dt><b>author</b></dt>
7400<dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given pattern.</dd>
7401<dt><b>committer</b></dt>
7402<dd>Name and e-mail of the committer and date of commit will be scanned for the given pattern.</dd>
7403EOT
7404        my $have_pickaxe = gitweb_check_feature('pickaxe');
7405        if ($have_pickaxe) {
7406                print <<EOT;
7407<dt><b>pickaxe</b></dt>
7408<dd>All commits that caused the string to appear or disappear from any file (changes that
7409added, removed or "modified" the string) will be listed. This search can take a while and
7410takes a lot of strain on the server, so please use it wisely. Note that since you may be
7411interested even in changes just changing the case as well, this search is case sensitive.</dd>
7412EOT
7413        }
7414        print "</dl>\n";
7415        git_footer_html();
7416}
7417
7418sub git_shortlog {
7419        git_log_generic('shortlog', \&git_shortlog_body,
7420                        $hash, $hash_parent);
7421}
7422
7423## ......................................................................
7424## feeds (RSS, Atom; OPML)
7425
7426sub git_feed {
7427        my $format = shift || 'atom';
7428        my $have_blame = gitweb_check_feature('blame');
7429
7430        # Atom: http://www.atomenabled.org/developers/syndication/
7431        # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
7432        if ($format ne 'rss' && $format ne 'atom') {
7433                die_error(400, "Unknown web feed format");
7434        }
7435
7436        # log/feed of current (HEAD) branch, log of given branch, history of file/directory
7437        my $head = $hash || 'HEAD';
7438        my @commitlist = parse_commits($head, 150, 0, $file_name);
7439
7440        my %latest_commit;
7441        my %latest_date;
7442        my $content_type = "application/$format+xml";
7443        if (defined $cgi->http('HTTP_ACCEPT') &&
7444                 $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
7445                # browser (feed reader) prefers text/xml
7446                $content_type = 'text/xml';
7447        }
7448        if (defined($commitlist[0])) {
7449                %latest_commit = %{$commitlist[0]};
7450                my $latest_epoch = $latest_commit{'committer_epoch'};
7451                %latest_date   = parse_date($latest_epoch, $latest_commit{'comitter_tz'});
7452                my $if_modified = $cgi->http('IF_MODIFIED_SINCE');
7453                if (defined $if_modified) {
7454                        my $since;
7455                        if (eval { require HTTP::Date; 1; }) {
7456                                $since = HTTP::Date::str2time($if_modified);
7457                        } elsif (eval { require Time::ParseDate; 1; }) {
7458                                $since = Time::ParseDate::parsedate($if_modified, GMT => 1);
7459                        }
7460                        if (defined $since && $latest_epoch <= $since) {
7461                                print $cgi->header(
7462                                        -type => $content_type,
7463                                        -charset => 'utf-8',
7464                                        -last_modified => $latest_date{'rfc2822'},
7465                                        -status => '304 Not Modified');
7466                                return;
7467                        }
7468                }
7469                print $cgi->header(
7470                        -type => $content_type,
7471                        -charset => 'utf-8',
7472                        -last_modified => $latest_date{'rfc2822'});
7473        } else {
7474                print $cgi->header(
7475                        -type => $content_type,
7476                        -charset => 'utf-8');
7477        }
7478
7479        # Optimization: skip generating the body if client asks only
7480        # for Last-Modified date.
7481        return if ($cgi->request_method() eq 'HEAD');
7482
7483        # header variables
7484        my $title = "$site_name - $project/$action";
7485        my $feed_type = 'log';
7486        if (defined $hash) {
7487                $title .= " - '$hash'";
7488                $feed_type = 'branch log';
7489                if (defined $file_name) {
7490                        $title .= " :: $file_name";
7491                        $feed_type = 'history';
7492                }
7493        } elsif (defined $file_name) {
7494                $title .= " - $file_name";
7495                $feed_type = 'history';
7496        }
7497        $title .= " $feed_type";
7498        my $descr = git_get_project_description($project);
7499        if (defined $descr) {
7500                $descr = esc_html($descr);
7501        } else {
7502                $descr = "$project " .
7503                         ($format eq 'rss' ? 'RSS' : 'Atom') .
7504                         " feed";
7505        }
7506        my $owner = git_get_project_owner($project);
7507        $owner = esc_html($owner);
7508
7509        #header
7510        my $alt_url;
7511        if (defined $file_name) {
7512                $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
7513        } elsif (defined $hash) {
7514                $alt_url = href(-full=>1, action=>"log", hash=>$hash);
7515        } else {
7516                $alt_url = href(-full=>1, action=>"summary");
7517        }
7518        print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
7519        if ($format eq 'rss') {
7520                print <<XML;
7521<rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
7522<channel>
7523XML
7524                print "<title>$title</title>\n" .
7525                      "<link>$alt_url</link>\n" .
7526                      "<description>$descr</description>\n" .
7527                      "<language>en</language>\n" .
7528                      # project owner is responsible for 'editorial' content
7529                      "<managingEditor>$owner</managingEditor>\n";
7530                if (defined $logo || defined $favicon) {
7531                        # prefer the logo to the favicon, since RSS
7532                        # doesn't allow both
7533                        my $img = esc_url($logo || $favicon);
7534                        print "<image>\n" .
7535                              "<url>$img</url>\n" .
7536                              "<title>$title</title>\n" .
7537                              "<link>$alt_url</link>\n" .
7538                              "</image>\n";
7539                }
7540                if (%latest_date) {
7541                        print "<pubDate>$latest_date{'rfc2822'}</pubDate>\n";
7542                        print "<lastBuildDate>$latest_date{'rfc2822'}</lastBuildDate>\n";
7543                }
7544                print "<generator>gitweb v.$version/$git_version</generator>\n";
7545        } elsif ($format eq 'atom') {
7546                print <<XML;
7547<feed xmlns="http://www.w3.org/2005/Atom">
7548XML
7549                print "<title>$title</title>\n" .
7550                      "<subtitle>$descr</subtitle>\n" .
7551                      '<link rel="alternate" type="text/html" href="' .
7552                      $alt_url . '" />' . "\n" .
7553                      '<link rel="self" type="' . $content_type . '" href="' .
7554                      $cgi->self_url() . '" />' . "\n" .
7555                      "<id>" . href(-full=>1) . "</id>\n" .
7556                      # use project owner for feed author
7557                      "<author><name>$owner</name></author>\n";
7558                if (defined $favicon) {
7559                        print "<icon>" . esc_url($favicon) . "</icon>\n";
7560                }
7561                if (defined $logo) {
7562                        # not twice as wide as tall: 72 x 27 pixels
7563                        print "<logo>" . esc_url($logo) . "</logo>\n";
7564                }
7565                if (! %latest_date) {
7566                        # dummy date to keep the feed valid until commits trickle in:
7567                        print "<updated>1970-01-01T00:00:00Z</updated>\n";
7568                } else {
7569                        print "<updated>$latest_date{'iso-8601'}</updated>\n";
7570                }
7571                print "<generator version='$version/$git_version'>gitweb</generator>\n";
7572        }
7573
7574        # contents
7575        for (my $i = 0; $i <= $#commitlist; $i++) {
7576                my %co = %{$commitlist[$i]};
7577                my $commit = $co{'id'};
7578                # we read 150, we always show 30 and the ones more recent than 48 hours
7579                if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
7580                        last;
7581                }
7582                my %cd = parse_date($co{'author_epoch'}, $co{'author_tz'});
7583
7584                # get list of changed files
7585                open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
7586                        $co{'parent'} || "--root",
7587                        $co{'id'}, "--", (defined $file_name ? $file_name : ())
7588                        or next;
7589                my @difftree = map { chomp; $_ } <$fd>;
7590                close $fd
7591                        or next;
7592
7593                # print element (entry, item)
7594                my $co_url = href(-full=>1, action=>"commitdiff", hash=>$commit);
7595                if ($format eq 'rss') {
7596                        print "<item>\n" .
7597                              "<title>" . esc_html($co{'title'}) . "</title>\n" .
7598                              "<author>" . esc_html($co{'author'}) . "</author>\n" .
7599                              "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
7600                              "<guid isPermaLink=\"true\">$co_url</guid>\n" .
7601                              "<link>$co_url</link>\n" .
7602                              "<description>" . esc_html($co{'title'}) . "</description>\n" .
7603                              "<content:encoded>" .
7604                              "<![CDATA[\n";
7605                } elsif ($format eq 'atom') {
7606                        print "<entry>\n" .
7607                              "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
7608                              "<updated>$cd{'iso-8601'}</updated>\n" .
7609                              "<author>\n" .
7610                              "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
7611                        if ($co{'author_email'}) {
7612                                print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
7613                        }
7614                        print "</author>\n" .
7615                              # use committer for contributor
7616                              "<contributor>\n" .
7617                              "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
7618                        if ($co{'committer_email'}) {
7619                                print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
7620                        }
7621                        print "</contributor>\n" .
7622                              "<published>$cd{'iso-8601'}</published>\n" .
7623                              "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
7624                              "<id>$co_url</id>\n" .
7625                              "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
7626                              "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
7627                }
7628                my $comment = $co{'comment'};
7629                print "<pre>\n";
7630                foreach my $line (@$comment) {
7631                        $line = esc_html($line);
7632                        print "$line\n";
7633                }
7634                print "</pre><ul>\n";
7635                foreach my $difftree_line (@difftree) {
7636                        my %difftree = parse_difftree_raw_line($difftree_line);
7637                        next if !$difftree{'from_id'};
7638
7639                        my $file = $difftree{'file'} || $difftree{'to_file'};
7640
7641                        print "<li>" .
7642                              "[" .
7643                              $cgi->a({-href => href(-full=>1, action=>"blobdiff",
7644                                                     hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
7645                                                     hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
7646                                                     file_name=>$file, file_parent=>$difftree{'from_file'}),
7647                                      -title => "diff"}, 'D');
7648                        if ($have_blame) {
7649                                print $cgi->a({-href => href(-full=>1, action=>"blame",
7650                                                             file_name=>$file, hash_base=>$commit),
7651                                              -title => "blame"}, 'B');
7652                        }
7653                        # if this is not a feed of a file history
7654                        if (!defined $file_name || $file_name ne $file) {
7655                                print $cgi->a({-href => href(-full=>1, action=>"history",
7656                                                             file_name=>$file, hash=>$commit),
7657                                              -title => "history"}, 'H');
7658                        }
7659                        $file = esc_path($file);
7660                        print "] ".
7661                              "$file</li>\n";
7662                }
7663                if ($format eq 'rss') {
7664                        print "</ul>]]>\n" .
7665                              "</content:encoded>\n" .
7666                              "</item>\n";
7667                } elsif ($format eq 'atom') {
7668                        print "</ul>\n</div>\n" .
7669                              "</content>\n" .
7670                              "</entry>\n";
7671                }
7672        }
7673
7674        # end of feed
7675        if ($format eq 'rss') {
7676                print "</channel>\n</rss>\n";
7677        } elsif ($format eq 'atom') {
7678                print "</feed>\n";
7679        }
7680}
7681
7682sub git_rss {
7683        git_feed('rss');
7684}
7685
7686sub git_atom {
7687        git_feed('atom');
7688}
7689
7690sub git_opml {
7691        my @list = git_get_projects_list();
7692        if (!@list) {
7693                die_error(404, "No projects found");
7694        }
7695
7696        print $cgi->header(
7697                -type => 'text/xml',
7698                -charset => 'utf-8',
7699                -content_disposition => 'inline; filename="opml.xml"');
7700
7701        print <<XML;
7702<?xml version="1.0" encoding="utf-8"?>
7703<opml version="1.0">
7704<head>
7705  <title>$site_name OPML Export</title>
7706</head>
7707<body>
7708<outline text="git RSS feeds">
7709XML
7710
7711        foreach my $pr (@list) {
7712                my %proj = %$pr;
7713                my $head = git_get_head_hash($proj{'path'});
7714                if (!defined $head) {
7715                        next;
7716                }
7717                $git_dir = "$projectroot/$proj{'path'}";
7718                my %co = parse_commit($head);
7719                if (!%co) {
7720                        next;
7721                }
7722
7723                my $path = esc_html(chop_str($proj{'path'}, 25, 5));
7724                my $rss  = href('project' => $proj{'path'}, 'action' => 'rss', -full => 1);
7725                my $html = href('project' => $proj{'path'}, 'action' => 'summary', -full => 1);
7726                print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
7727        }
7728        print <<XML;
7729</outline>
7730</body>
7731</opml>
7732XML
7733}