Andrew's git - gitweb.git/blob - gitweb/gitweb.perl

   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 $str;
1445
1446        if (utf8::is_utf8($str) || 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        $str = to_utf8($str);
1699        if ($chopped eq $str) {
1700                return esc_html($chopped);
1701        } else {
1702                $str =~ s/[[:cntrl:]]/?/g;
1703                return $cgi->span({-title=>$str}, esc_html($chopped));
1704        }
1705}
1706
1707## ----------------------------------------------------------------------
1708## functions returning short strings
1709
1710# CSS class for given age value (in seconds)
1711sub age_class {
1712        my $age = shift;
1713
1714        if (!defined $age) {
1715                return "noage";
1716        } elsif ($age < 60*60*2) {
1717                return "age0";
1718        } elsif ($age < 60*60*24*2) {
1719                return "age1";
1720        } else {
1721                return "age2";
1722        }
1723}
1724
1725# convert age in seconds to "nn units ago" string
1726sub age_string {
1727        my $age = shift;
1728        my $age_str;
1729
1730        if ($age > 60*60*24*365*2) {
1731                $age_str = (int $age/60/60/24/365);
1732                $age_str .= " years ago";
1733        } elsif ($age > 60*60*24*(365/12)*2) {
1734                $age_str = int $age/60/60/24/(365/12);
1735                $age_str .= " months ago";
1736        } elsif ($age > 60*60*24*7*2) {
1737                $age_str = int $age/60/60/24/7;
1738                $age_str .= " weeks ago";
1739        } elsif ($age > 60*60*24*2) {
1740                $age_str = int $age/60/60/24;
1741                $age_str .= " days ago";
1742        } elsif ($age > 60*60*2) {
1743                $age_str = int $age/60/60;
1744                $age_str .= " hours ago";
1745        } elsif ($age > 60*2) {
1746                $age_str = int $age/60;
1747                $age_str .= " min ago";
1748        } elsif ($age > 2) {
1749                $age_str = int $age;
1750                $age_str .= " sec ago";
1751        } else {
1752                $age_str .= " right now";
1753        }
1754        return $age_str;
1755}
1756
1757use constant {
1758        S_IFINVALID => 0030000,
1759        S_IFGITLINK => 0160000,
1760};
1761
1762# submodule/subproject, a commit object reference
1763sub S_ISGITLINK {
1764        my $mode = shift;
1765
1766        return (($mode & S_IFMT) == S_IFGITLINK)
1767}
1768
1769# convert file mode in octal to symbolic file mode string
1770sub mode_str {
1771        my $mode = oct shift;
1772
1773        if (S_ISGITLINK($mode)) {
1774                return 'm---------';
1775        } elsif (S_ISDIR($mode & S_IFMT)) {
1776                return 'drwxr-xr-x';
1777        } elsif (S_ISLNK($mode)) {
1778                return 'lrwxrwxrwx';
1779        } elsif (S_ISREG($mode)) {
1780                # git cares only about the executable bit
1781                if ($mode & S_IXUSR) {
1782                        return '-rwxr-xr-x';
1783                } else {
1784                        return '-rw-r--r--';
1785                };
1786        } else {
1787                return '----------';
1788        }
1789}
1790
1791# convert file mode in octal to file type string
1792sub file_type {
1793        my $mode = shift;
1794
1795        if ($mode !~ m/^[0-7]+$/) {
1796                return $mode;
1797        } else {
1798                $mode = oct $mode;
1799        }
1800
1801        if (S_ISGITLINK($mode)) {
1802                return "submodule";
1803        } elsif (S_ISDIR($mode & S_IFMT)) {
1804                return "directory";
1805        } elsif (S_ISLNK($mode)) {
1806                return "symlink";
1807        } elsif (S_ISREG($mode)) {
1808                return "file";
1809        } else {
1810                return "unknown";
1811        }
1812}
1813
1814# convert file mode in octal to file type description string
1815sub file_type_long {
1816        my $mode = shift;
1817
1818        if ($mode !~ m/^[0-7]+$/) {
1819                return $mode;
1820        } else {
1821                $mode = oct $mode;
1822        }
1823
1824        if (S_ISGITLINK($mode)) {
1825                return "submodule";
1826        } elsif (S_ISDIR($mode & S_IFMT)) {
1827                return "directory";
1828        } elsif (S_ISLNK($mode)) {
1829                return "symlink";
1830        } elsif (S_ISREG($mode)) {
1831                if ($mode & S_IXUSR) {
1832                        return "executable";
1833                } else {
1834                        return "file";
1835                };
1836        } else {
1837                return "unknown";
1838        }
1839}
1840
1841
1842## ----------------------------------------------------------------------
1843## functions returning short HTML fragments, or transforming HTML fragments
1844## which don't belong to other sections
1845
1846# format line of commit message.
1847sub format_log_line_html {
1848        my $line = shift;
1849
1850        $line = esc_html($line, -nbsp=>1);
1851        $line =~ s{\b([0-9a-fA-F]{8,40})\b}{
1852                $cgi->a({-href => href(action=>"object", hash=>$1),
1853                                        -class => "text"}, $1);
1854        }eg;
1855
1856        return $line;
1857}
1858
1859# format marker of refs pointing to given object
1860
1861# the destination action is chosen based on object type and current context:
1862# - for annotated tags, we choose the tag view unless it's the current view
1863#   already, in which case we go to shortlog view
1864# - for other refs, we keep the current view if we're in history, shortlog or
1865#   log view, and select shortlog otherwise
1866sub format_ref_marker {
1867        my ($refs, $id) = @_;
1868        my $markers = '';
1869
1870        if (defined $refs->{$id}) {
1871                foreach my $ref (@{$refs->{$id}}) {
1872                        # this code exploits the fact that non-lightweight tags are the
1873                        # only indirect objects, and that they are the only objects for which
1874                        # we want to use tag instead of shortlog as action
1875                        my ($type, $name) = qw();
1876                        my $indirect = ($ref =~ s/\^\{\}$//);
1877                        # e.g. tags/v2.6.11 or heads/next
1878                        if ($ref =~ m!^(.*?)s?/(.*)$!) {
1879                                $type = $1;
1880                                $name = $2;
1881                        } else {
1882                                $type = "ref";
1883                                $name = $ref;
1884                        }
1885
1886                        my $class = $type;
1887                        $class .= " indirect" if $indirect;
1888
1889                        my $dest_action = "shortlog";
1890
1891                        if ($indirect) {
1892                                $dest_action = "tag" unless $action eq "tag";
1893                        } elsif ($action =~ /^(history|(short)?log)$/) {
1894                                $dest_action = $action;
1895                        }
1896
1897                        my $dest = "";
1898                        $dest .= "refs/" unless $ref =~ m!^refs/!;
1899                        $dest .= $ref;
1900
1901                        my $link = $cgi->a({
1902                                -href => href(
1903                                        action=>$dest_action,
1904                                        hash=>$dest
1905                                )}, $name);
1906
1907                        $markers .= " <span class=\"".esc_attr($class)."\" title=\"".esc_attr($ref)."\">" .
1908                                $link . "</span>";
1909                }
1910        }
1911
1912        if ($markers) {
1913                return ' <span class="refs">'. $markers . '</span>';
1914        } else {
1915                return "";
1916        }
1917}
1918
1919# format, perhaps shortened and with markers, title line
1920sub format_subject_html {
1921        my ($long, $short, $href, $extra) = @_;
1922        $extra = '' unless defined($extra);
1923
1924        if (length($short) < length($long)) {
1925                $long =~ s/[[:cntrl:]]/?/g;
1926                return $cgi->a({-href => $href, -class => "list subject",
1927                                -title => to_utf8($long)},
1928                       esc_html($short)) . $extra;
1929        } else {
1930                return $cgi->a({-href => $href, -class => "list subject"},
1931                       esc_html($long)) . $extra;
1932        }
1933}
1934
1935# Rather than recomputing the url for an email multiple times, we cache it
1936# after the first hit. This gives a visible benefit in views where the avatar
1937# for the same email is used repeatedly (e.g. shortlog).
1938# The cache is shared by all avatar engines (currently gravatar only), which
1939# are free to use it as preferred. Since only one avatar engine is used for any
1940# given page, there's no risk for cache conflicts.
1941our %avatar_cache = ();
1942
1943# Compute the picon url for a given email, by using the picon search service over at
1944# http://www.cs.indiana.edu/picons/search.html
1945sub picon_url {
1946        my $email = lc shift;
1947        if (!$avatar_cache{$email}) {
1948                my ($user, $domain) = split('@', $email);
1949                $avatar_cache{$email} =
1950                        "http://www.cs.indiana.edu/cgi-pub/kinzler/piconsearch.cgi/" .
1951                        "$domain/$user/" .
1952                        "users+domains+unknown/up/single";
1953        }
1954        return $avatar_cache{$email};
1955}
1956
1957# Compute the gravatar url for a given email, if it's not in the cache already.
1958# Gravatar stores only the part of the URL before the size, since that's the
1959# one computationally more expensive. This also allows reuse of the cache for
1960# different sizes (for this particular engine).
1961sub gravatar_url {
1962        my $email = lc shift;
1963        my $size = shift;
1964        $avatar_cache{$email} ||=
1965                "http://www.gravatar.com/avatar/" .
1966                        Digest::MD5::md5_hex($email) . "?s=";
1967        return $avatar_cache{$email} . $size;
1968}
1969
1970# Insert an avatar for the given $email at the given $size if the feature
1971# is enabled.
1972sub git_get_avatar {
1973        my ($email, %opts) = @_;
1974        my $pre_white  = ($opts{-pad_before} ? "&nbsp;" : "");
1975        my $post_white = ($opts{-pad_after}  ? "&nbsp;" : "");
1976        $opts{-size} ||= 'default';
1977        my $size = $avatar_size{$opts{-size}} || $avatar_size{'default'};
1978        my $url = "";
1979        if ($git_avatar eq 'gravatar') {
1980                $url = gravatar_url($email, $size);
1981        } elsif ($git_avatar eq 'picon') {
1982                $url = picon_url($email);
1983        }
1984        # Other providers can be added by extending the if chain, defining $url
1985        # as needed. If no variant puts something in $url, we assume avatars
1986        # are completely disabled/unavailable.
1987        if ($url) {
1988                return $pre_white .
1989                       "<img width=\"$size\" " .
1990                            "class=\"avatar\" " .
1991                            "src=\"".esc_url($url)."\" " .
1992                            "alt=\"\" " .
1993                       "/>" . $post_white;
1994        } else {
1995                return "";
1996        }
1997}
1998
1999sub format_search_author {
2000        my ($author, $searchtype, $displaytext) = @_;
2001        my $have_search = gitweb_check_feature('search');
2002
2003        if ($have_search) {
2004                my $performed = "";
2005                if ($searchtype eq 'author') {
2006                        $performed = "authored";
2007                } elsif ($searchtype eq 'committer') {
2008                        $performed = "committed";
2009                }
2010
2011                return $cgi->a({-href => href(action=>"search", hash=>$hash,
2012                                searchtext=>$author,
2013                                searchtype=>$searchtype), class=>"list",
2014                                title=>"Search for commits $performed by $author"},
2015                                $displaytext);
2016
2017        } else {
2018                return $displaytext;
2019        }
2020}
2021
2022# format the author name of the given commit with the given tag
2023# the author name is chopped and escaped according to the other
2024# optional parameters (see chop_str).
2025sub format_author_html {
2026        my $tag = shift;
2027        my $co = shift;
2028        my $author = chop_and_escape_str($co->{'author_name'}, @_);
2029        return "<$tag class=\"author\">" .
2030               format_search_author($co->{'author_name'}, "author",
2031                       git_get_avatar($co->{'author_email'}, -pad_after => 1) .
2032                       $author) .
2033               "</$tag>";
2034}
2035
2036# format git diff header line, i.e. "diff --(git|combined|cc) ..."
2037sub format_git_diff_header_line {
2038        my $line = shift;
2039        my $diffinfo = shift;
2040        my ($from, $to) = @_;
2041
2042        if ($diffinfo->{'nparents'}) {
2043                # combined diff
2044                $line =~ s!^(diff (.*?) )"?.*$!$1!;
2045                if ($to->{'href'}) {
2046                        $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
2047                                         esc_path($to->{'file'}));
2048                } else { # file was deleted (no href)
2049                        $line .= esc_path($to->{'file'});
2050                }
2051        } else {
2052                # "ordinary" diff
2053                $line =~ s!^(diff (.*?) )"?a/.*$!$1!;
2054                if ($from->{'href'}) {
2055                        $line .= $cgi->a({-href => $from->{'href'}, -class => "path"},
2056                                         'a/' . esc_path($from->{'file'}));
2057                } else { # file was added (no href)
2058                        $line .= 'a/' . esc_path($from->{'file'});
2059                }
2060                $line .= ' ';
2061                if ($to->{'href'}) {
2062                        $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
2063                                         'b/' . esc_path($to->{'file'}));
2064                } else { # file was deleted
2065                        $line .= 'b/' . esc_path($to->{'file'});
2066                }
2067        }
2068
2069        return "<div class=\"diff header\">$line</div>\n";
2070}
2071
2072# format extended diff header line, before patch itself
2073sub format_extended_diff_header_line {
2074        my $line = shift;
2075        my $diffinfo = shift;
2076        my ($from, $to) = @_;
2077
2078        # match <path>
2079        if ($line =~ s!^((copy|rename) from ).*$!$1! && $from->{'href'}) {
2080                $line .= $cgi->a({-href=>$from->{'href'}, -class=>"path"},
2081                                       esc_path($from->{'file'}));
2082        }
2083        if ($line =~ s!^((copy|rename) to ).*$!$1! && $to->{'href'}) {
2084                $line .= $cgi->a({-href=>$to->{'href'}, -class=>"path"},
2085                                 esc_path($to->{'file'}));
2086        }
2087        # match single <mode>
2088        if ($line =~ m/\s(\d{6})$/) {
2089                $line .= '<span class="info"> (' .
2090                         file_type_long($1) .
2091                         ')</span>';
2092        }
2093        # match <hash>
2094        if ($line =~ m/^index [0-9a-fA-F]{40},[0-9a-fA-F]{40}/) {
2095                # can match only for combined diff
2096                $line = 'index ';
2097                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2098                        if ($from->{'href'}[$i]) {
2099                                $line .= $cgi->a({-href=>$from->{'href'}[$i],
2100                                                  -class=>"hash"},
2101                                                 substr($diffinfo->{'from_id'}[$i],0,7));
2102                        } else {
2103                                $line .= '0' x 7;
2104                        }
2105                        # separator
2106                        $line .= ',' if ($i < $diffinfo->{'nparents'} - 1);
2107                }
2108                $line .= '..';
2109                if ($to->{'href'}) {
2110                        $line .= $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
2111                                         substr($diffinfo->{'to_id'},0,7));
2112                } else {
2113                        $line .= '0' x 7;
2114                }
2115
2116        } elsif ($line =~ m/^index [0-9a-fA-F]{40}..[0-9a-fA-F]{40}/) {
2117                # can match only for ordinary diff
2118                my ($from_link, $to_link);
2119                if ($from->{'href'}) {
2120                        $from_link = $cgi->a({-href=>$from->{'href'}, -class=>"hash"},
2121                                             substr($diffinfo->{'from_id'},0,7));
2122                } else {
2123                        $from_link = '0' x 7;
2124                }
2125                if ($to->{'href'}) {
2126                        $to_link = $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
2127                                           substr($diffinfo->{'to_id'},0,7));
2128                } else {
2129                        $to_link = '0' x 7;
2130                }
2131                my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2132                $line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
2133        }
2134
2135        return $line . "<br/>\n";
2136}
2137
2138# format from-file/to-file diff header
2139sub format_diff_from_to_header {
2140        my ($from_line, $to_line, $diffinfo, $from, $to, @parents) = @_;
2141        my $line;
2142        my $result = '';
2143
2144        $line = $from_line;
2145        #assert($line =~ m/^---/) if DEBUG;
2146        # no extra formatting for "^--- /dev/null"
2147        if (! $diffinfo->{'nparents'}) {
2148                # ordinary (single parent) diff
2149                if ($line =~ m!^--- "?a/!) {
2150                        if ($from->{'href'}) {
2151                                $line = '--- a/' .
2152                                        $cgi->a({-href=>$from->{'href'}, -class=>"path"},
2153                                                esc_path($from->{'file'}));
2154                        } else {
2155                                $line = '--- a/' .
2156                                        esc_path($from->{'file'});
2157                        }
2158                }
2159                $result .= qq!<div class="diff from_file">$line</div>\n!;
2160
2161        } else {
2162                # combined diff (merge commit)
2163                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2164                        if ($from->{'href'}[$i]) {
2165                                $line = '--- ' .
2166                                        $cgi->a({-href=>href(action=>"blobdiff",
2167                                                             hash_parent=>$diffinfo->{'from_id'}[$i],
2168                                                             hash_parent_base=>$parents[$i],
2169                                                             file_parent=>$from->{'file'}[$i],
2170                                                             hash=>$diffinfo->{'to_id'},
2171                                                             hash_base=>$hash,
2172                                                             file_name=>$to->{'file'}),
2173                                                 -class=>"path",
2174                                                 -title=>"diff" . ($i+1)},
2175                                                $i+1) .
2176                                        '/' .
2177                                        $cgi->a({-href=>$from->{'href'}[$i], -class=>"path"},
2178                                                esc_path($from->{'file'}[$i]));
2179                        } else {
2180                                $line = '--- /dev/null';
2181                        }
2182                        $result .= qq!<div class="diff from_file">$line</div>\n!;
2183                }
2184        }
2185
2186        $line = $to_line;
2187        #assert($line =~ m/^\+\+\+/) if DEBUG;
2188        # no extra formatting for "^+++ /dev/null"
2189        if ($line =~ m!^\+\+\+ "?b/!) {
2190                if ($to->{'href'}) {
2191                        $line = '+++ b/' .
2192                                $cgi->a({-href=>$to->{'href'}, -class=>"path"},
2193                                        esc_path($to->{'file'}));
2194                } else {
2195                        $line = '+++ b/' .
2196                                esc_path($to->{'file'});
2197                }
2198        }
2199        $result .= qq!<div class="diff to_file">$line</div>\n!;
2200
2201        return $result;
2202}
2203
2204# create note for patch simplified by combined diff
2205sub format_diff_cc_simplified {
2206        my ($diffinfo, @parents) = @_;
2207        my $result = '';
2208
2209        $result .= "<div class=\"diff header\">" .
2210                   "diff --cc ";
2211        if (!is_deleted($diffinfo)) {
2212                $result .= $cgi->a({-href => href(action=>"blob",
2213                                                  hash_base=>$hash,
2214                                                  hash=>$diffinfo->{'to_id'},
2215                                                  file_name=>$diffinfo->{'to_file'}),
2216                                    -class => "path"},
2217                                   esc_path($diffinfo->{'to_file'}));
2218        } else {
2219                $result .= esc_path($diffinfo->{'to_file'});
2220        }
2221        $result .= "</div>\n" . # class="diff header"
2222                   "<div class=\"diff nodifferences\">" .
2223                   "Simple merge" .
2224                   "</div>\n"; # class="diff nodifferences"
2225
2226        return $result;
2227}
2228
2229# format patch (diff) line (not to be used for diff headers)
2230sub format_diff_line {
2231        my $line = shift;
2232        my ($from, $to) = @_;
2233        my $diff_class = "";
2234
2235        chomp $line;
2236
2237        if ($from && $to && ref($from->{'href'}) eq "ARRAY") {
2238                # combined diff
2239                my $prefix = substr($line, 0, scalar @{$from->{'href'}});
2240                if ($line =~ m/^\@{3}/) {
2241                        $diff_class = " chunk_header";
2242                } elsif ($line =~ m/^\\/) {
2243                        $diff_class = " incomplete";
2244                } elsif ($prefix =~ tr/+/+/) {
2245                        $diff_class = " add";
2246                } elsif ($prefix =~ tr/-/-/) {
2247                        $diff_class = " rem";
2248                }
2249        } else {
2250                # assume ordinary diff
2251                my $char = substr($line, 0, 1);
2252                if ($char eq '+') {
2253                        $diff_class = " add";
2254                } elsif ($char eq '-') {
2255                        $diff_class = " rem";
2256                } elsif ($char eq '@') {
2257                        $diff_class = " chunk_header";
2258                } elsif ($char eq "\\") {
2259                        $diff_class = " incomplete";
2260                }
2261        }
2262        $line = untabify($line);
2263        if ($from && $to && $line =~ m/^\@{2} /) {
2264                my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
2265                        $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
2266
2267                $from_lines = 0 unless defined $from_lines;
2268                $to_lines   = 0 unless defined $to_lines;
2269
2270                if ($from->{'href'}) {
2271                        $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
2272                                             -class=>"list"}, $from_text);
2273                }
2274                if ($to->{'href'}) {
2275                        $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
2276                                             -class=>"list"}, $to_text);
2277                }
2278                $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
2279                        "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
2280                return "<div class=\"diff$diff_class\">$line</div>\n";
2281        } elsif ($from && $to && $line =~ m/^\@{3}/) {
2282                my ($prefix, $ranges, $section) = $line =~ m/^(\@+) (.*?) \@+(.*)$/;
2283                my (@from_text, @from_start, @from_nlines, $to_text, $to_start, $to_nlines);
2284
2285                @from_text = split(' ', $ranges);
2286                for (my $i = 0; $i < @from_text; ++$i) {
2287                        ($from_start[$i], $from_nlines[$i]) =
2288                                (split(',', substr($from_text[$i], 1)), 0);
2289                }
2290
2291                $to_text   = pop @from_text;
2292                $to_start  = pop @from_start;
2293                $to_nlines = pop @from_nlines;
2294
2295                $line = "<span class=\"chunk_info\">$prefix ";
2296                for (my $i = 0; $i < @from_text; ++$i) {
2297                        if ($from->{'href'}[$i]) {
2298                                $line .= $cgi->a({-href=>"$from->{'href'}[$i]#l$from_start[$i]",
2299                                                  -class=>"list"}, $from_text[$i]);
2300                        } else {
2301                                $line .= $from_text[$i];
2302                        }
2303                        $line .= " ";
2304                }
2305                if ($to->{'href'}) {
2306                        $line .= $cgi->a({-href=>"$to->{'href'}#l$to_start",
2307                                          -class=>"list"}, $to_text);
2308                } else {
2309                        $line .= $to_text;
2310                }
2311                $line .= " $prefix</span>" .
2312                         "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
2313                return "<div class=\"diff$diff_class\">$line</div>\n";
2314        }
2315        return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
2316}
2317
2318# Generates undef or something like "_snapshot_" or "snapshot (_tbz2_ _zip_)",
2319# linked.  Pass the hash of the tree/commit to snapshot.
2320sub format_snapshot_links {
2321        my ($hash) = @_;
2322        my $num_fmts = @snapshot_fmts;
2323        if ($num_fmts > 1) {
2324                # A parenthesized list of links bearing format names.
2325                # e.g. "snapshot (_tar.gz_ _zip_)"
2326                return "snapshot (" . join(' ', map
2327                        $cgi->a({
2328                                -href => href(
2329                                        action=>"snapshot",
2330                                        hash=>$hash,
2331                                        snapshot_format=>$_
2332                                )
2333                        }, $known_snapshot_formats{$_}{'display'})
2334                , @snapshot_fmts) . ")";
2335        } elsif ($num_fmts == 1) {
2336                # A single "snapshot" link whose tooltip bears the format name.
2337                # i.e. "_snapshot_"
2338                my ($fmt) = @snapshot_fmts;
2339                return
2340                        $cgi->a({
2341                                -href => href(
2342                                        action=>"snapshot",
2343                                        hash=>$hash,
2344                                        snapshot_format=>$fmt
2345                                ),
2346                                -title => "in format: $known_snapshot_formats{$fmt}{'display'}"
2347                        }, "snapshot");
2348        } else { # $num_fmts == 0
2349                return undef;
2350        }
2351}
2352
2353## ......................................................................
2354## functions returning values to be passed, perhaps after some
2355## transformation, to other functions; e.g. returning arguments to href()
2356
2357# returns hash to be passed to href to generate gitweb URL
2358# in -title key it returns description of link
2359sub get_feed_info {
2360        my $format = shift || 'Atom';
2361        my %res = (action => lc($format));
2362
2363        # feed links are possible only for project views
2364        return unless (defined $project);
2365        # some views should link to OPML, or to generic project feed,
2366        # or don't have specific feed yet (so they should use generic)
2367        return if ($action =~ /^(?:tags|heads|forks|tag|search)$/x);
2368
2369        my $branch;
2370        # branches refs uses 'refs/heads/' prefix (fullname) to differentiate
2371        # from tag links; this also makes possible to detect branch links
2372        if ((defined $hash_base && $hash_base =~ m!^refs/heads/(.*)$!) ||
2373            (defined $hash      && $hash      =~ m!^refs/heads/(.*)$!)) {
2374                $branch = $1;
2375        }
2376        # find log type for feed description (title)
2377        my $type = 'log';
2378        if (defined $file_name) {
2379                $type  = "history of $file_name";
2380                $type .= "/" if ($action eq 'tree');
2381                $type .= " on '$branch'" if (defined $branch);
2382        } else {
2383                $type = "log of $branch" if (defined $branch);
2384        }
2385
2386        $res{-title} = $type;
2387        $res{'hash'} = (defined $branch ? "refs/heads/$branch" : undef);
2388        $res{'file_name'} = $file_name;
2389
2390        return %res;
2391}
2392
2393## ----------------------------------------------------------------------
2394## git utility subroutines, invoking git commands
2395
2396# returns path to the core git executable and the --git-dir parameter as list
2397sub git_cmd {
2398        $number_of_git_cmds++;
2399        return $GIT, '--git-dir='.$git_dir;
2400}
2401
2402# quote the given arguments for passing them to the shell
2403# quote_command("command", "arg 1", "arg with ' and ! characters")
2404# => "'command' 'arg 1' 'arg with '\'' and '\!' characters'"
2405# Try to avoid using this function wherever possible.
2406sub quote_command {
2407        return join(' ',
2408                map { my $a = $_; $a =~ s/(['!])/'\\$1'/g; "'$a'" } @_ );
2409}
2410
2411# get HEAD ref of given project as hash
2412sub git_get_head_hash {
2413        return git_get_full_hash(shift, 'HEAD');
2414}
2415
2416sub git_get_full_hash {
2417        return git_get_hash(@_);
2418}
2419
2420sub git_get_short_hash {
2421        return git_get_hash(@_, '--short=7');
2422}
2423
2424sub git_get_hash {
2425        my ($project, $hash, @options) = @_;
2426        my $o_git_dir = $git_dir;
2427        my $retval = undef;
2428        $git_dir = "$projectroot/$project";
2429        if (open my $fd, '-|', git_cmd(), 'rev-parse',
2430            '--verify', '-q', @options, $hash) {
2431                $retval = <$fd>;
2432                chomp $retval if defined $retval;
2433                close $fd;
2434        }
2435        if (defined $o_git_dir) {
2436                $git_dir = $o_git_dir;
2437        }
2438        return $retval;
2439}
2440
2441# get type of given object
2442sub git_get_type {
2443        my $hash = shift;
2444
2445        open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
2446        my $type = <$fd>;
2447        close $fd or return;
2448        chomp $type;
2449        return $type;
2450}
2451
2452# repository configuration
2453our $config_file = '';
2454our %config;
2455
2456# store multiple values for single key as anonymous array reference
2457# single values stored directly in the hash, not as [ <value> ]
2458sub hash_set_multi {
2459        my ($hash, $key, $value) = @_;
2460
2461        if (!exists $hash->{$key}) {
2462                $hash->{$key} = $value;
2463        } elsif (!ref $hash->{$key}) {
2464                $hash->{$key} = [ $hash->{$key}, $value ];
2465        } else {
2466                push @{$hash->{$key}}, $value;
2467        }
2468}
2469
2470# return hash of git project configuration
2471# optionally limited to some section, e.g. 'gitweb'
2472sub git_parse_project_config {
2473        my $section_regexp = shift;
2474        my %config;
2475
2476        local $/ = "\0";
2477
2478        open my $fh, "-|", git_cmd(), "config", '-z', '-l',
2479                or return;
2480
2481        while (my $keyval = <$fh>) {
2482                chomp $keyval;
2483                my ($key, $value) = split(/\n/, $keyval, 2);
2484
2485                hash_set_multi(\%config, $key, $value)
2486                        if (!defined $section_regexp || $key =~ /^(?:$section_regexp)\./o);
2487        }
2488        close $fh;
2489
2490        return %config;
2491}
2492
2493# convert config value to boolean: 'true' or 'false'
2494# no value, number > 0, 'true' and 'yes' values are true
2495# rest of values are treated as false (never as error)
2496sub config_to_bool {
2497        my $val = shift;
2498
2499        return 1 if !defined $val;             # section.key
2500
2501        # strip leading and trailing whitespace
2502        $val =~ s/^\s+//;
2503        $val =~ s/\s+$//;
2504
2505        return (($val =~ /^\d+$/ && $val) ||   # section.key = 1
2506                ($val =~ /^(?:true|yes)$/i));  # section.key = true
2507}
2508
2509# convert config value to simple decimal number
2510# an optional value suffix of 'k', 'm', or 'g' will cause the value
2511# to be multiplied by 1024, 1048576, or 1073741824
2512sub config_to_int {
2513        my $val = shift;
2514
2515        # strip leading and trailing whitespace
2516        $val =~ s/^\s+//;
2517        $val =~ s/\s+$//;
2518
2519        if (my ($num, $unit) = ($val =~ /^([0-9]*)([kmg])$/i)) {
2520                $unit = lc($unit);
2521                # unknown unit is treated as 1
2522                return $num * ($unit eq 'g' ? 1073741824 :
2523                               $unit eq 'm' ?    1048576 :
2524                               $unit eq 'k' ?       1024 : 1);
2525        }
2526        return $val;
2527}
2528
2529# convert config value to array reference, if needed
2530sub config_to_multi {
2531        my $val = shift;
2532
2533        return ref($val) ? $val : (defined($val) ? [ $val ] : []);
2534}
2535
2536sub git_get_project_config {
2537        my ($key, $type) = @_;
2538
2539        return unless defined $git_dir;
2540
2541        # key sanity check
2542        return unless ($key);
2543        # only subsection, if exists, is case sensitive,
2544        # and not lowercased by 'git config -z -l'
2545        if (my ($hi, $mi, $lo) = ($key =~ /^([^.]*)\.(.*)\.([^.]*)$/)) {
2546                $key = join(".", lc($hi), $mi, lc($lo));
2547        } else {
2548                $key = lc($key);
2549        }
2550        $key =~ s/^gitweb\.//;
2551        return if ($key =~ m/\W/);
2552
2553        # type sanity check
2554        if (defined $type) {
2555                $type =~ s/^--//;
2556                $type = undef
2557                        unless ($type eq 'bool' || $type eq 'int');
2558        }
2559
2560        # get config
2561        if (!defined $config_file ||
2562            $config_file ne "$git_dir/config") {
2563                %config = git_parse_project_config('gitweb');
2564                $config_file = "$git_dir/config";
2565        }
2566
2567        # check if config variable (key) exists
2568        return unless exists $config{"gitweb.$key"};
2569
2570        # ensure given type
2571        if (!defined $type) {
2572                return $config{"gitweb.$key"};
2573        } elsif ($type eq 'bool') {
2574                # backward compatibility: 'git config --bool' returns true/false
2575                return config_to_bool($config{"gitweb.$key"}) ? 'true' : 'false';
2576        } elsif ($type eq 'int') {
2577                return config_to_int($config{"gitweb.$key"});
2578        }
2579        return $config{"gitweb.$key"};
2580}
2581
2582# get hash of given path at given ref
2583sub git_get_hash_by_path {
2584        my $base = shift;
2585        my $path = shift || return undef;
2586        my $type = shift;
2587
2588        $path =~ s,/+$,,;
2589
2590        open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
2591                or die_error(500, "Open git-ls-tree failed");
2592        my $line = <$fd>;
2593        close $fd or return undef;
2594
2595        if (!defined $line) {
2596                # there is no tree or hash given by $path at $base
2597                return undef;
2598        }
2599
2600        #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
2601        $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
2602        if (defined $type && $type ne $2) {
2603                # type doesn't match
2604                return undef;
2605        }
2606        return $3;
2607}
2608
2609# get path of entry with given hash at given tree-ish (ref)
2610# used to get 'from' filename for combined diff (merge commit) for renames
2611sub git_get_path_by_hash {
2612        my $base = shift || return;
2613        my $hash = shift || return;
2614
2615        local $/ = "\0";
2616
2617        open my $fd, "-|", git_cmd(), "ls-tree", '-r', '-t', '-z', $base
2618                or return undef;
2619        while (my $line = <$fd>) {
2620                chomp $line;
2621
2622                #'040000 tree 595596a6a9117ddba9fe379b6b012b558bac8423  gitweb'
2623                #'100644 blob e02e90f0429be0d2a69b76571101f20b8f75530f  gitweb/README'
2624                if ($line =~ m/(?:[0-9]+) (?:.+) $hash\t(.+)$/) {
2625                        close $fd;
2626                        return $1;
2627                }
2628        }
2629        close $fd;
2630        return undef;
2631}
2632
2633## ......................................................................
2634## git utility functions, directly accessing git repository
2635
2636# get the value of config variable either from file named as the variable
2637# itself in the repository ($GIT_DIR/$name file), or from gitweb.$name
2638# configuration variable in the repository config file.
2639sub git_get_file_or_project_config {
2640        my ($path, $name) = @_;
2641
2642        $git_dir = "$projectroot/$path";
2643        open my $fd, '<', "$git_dir/$name"
2644                or return git_get_project_config($name);
2645        my $conf = <$fd>;
2646        close $fd;
2647        if (defined $conf) {
2648                chomp $conf;
2649        }
2650        return $conf;
2651}
2652
2653sub git_get_project_description {
2654        my $path = shift;
2655        return git_get_file_or_project_config($path, 'description');
2656}
2657
2658sub git_get_project_category {
2659        my $path = shift;
2660        return git_get_file_or_project_config($path, 'category');
2661}
2662
2663
2664# supported formats:
2665# * $GIT_DIR/ctags/<tagname> file (in 'ctags' subdirectory)
2666#   - if its contents is a number, use it as tag weight,
2667#   - otherwise add a tag with weight 1
2668# * $GIT_DIR/ctags file, each line is a tag (with weight 1)
2669#   the same value multiple times increases tag weight
2670# * `gitweb.ctag' multi-valued repo config variable
2671sub git_get_project_ctags {
2672        my $project = shift;
2673        my $ctags = {};
2674
2675        $git_dir = "$projectroot/$project";
2676        if (opendir my $dh, "$git_dir/ctags") {
2677                my @files = grep { -f $_ } map { "$git_dir/ctags/$_" } readdir($dh);
2678                foreach my $tagfile (@files) {
2679                        open my $ct, '<', $tagfile
2680                                or next;
2681                        my $val = <$ct>;
2682                        chomp $val if $val;
2683                        close $ct;
2684
2685                        (my $ctag = $tagfile) =~ s#.*/##;
2686                        if ($val =~ /^\d+$/) {
2687                                $ctags->{$ctag} = $val;
2688                        } else {
2689                                $ctags->{$ctag} = 1;
2690                        }
2691                }
2692                closedir $dh;
2693
2694        } elsif (open my $fh, '<', "$git_dir/ctags") {
2695                while (my $line = <$fh>) {
2696                        chomp $line;
2697                        $ctags->{$line}++ if $line;
2698                }
2699                close $fh;
2700
2701        } else {
2702                my $taglist = config_to_multi(git_get_project_config('ctag'));
2703                foreach my $tag (@$taglist) {
2704                        $ctags->{$tag}++;
2705                }
2706        }
2707
2708        return $ctags;
2709}
2710
2711# return hash, where keys are content tags ('ctags'),
2712# and values are sum of weights of given tag in every project
2713sub git_gather_all_ctags {
2714        my $projects = shift;
2715        my $ctags = {};
2716
2717        foreach my $p (@$projects) {
2718                foreach my $ct (keys %{$p->{'ctags'}}) {
2719                        $ctags->{$ct} += $p->{'ctags'}->{$ct};
2720                }
2721        }
2722
2723        return $ctags;
2724}
2725
2726sub git_populate_project_tagcloud {
2727        my $ctags = shift;
2728
2729        # First, merge different-cased tags; tags vote on casing
2730        my %ctags_lc;
2731        foreach (keys %$ctags) {
2732                $ctags_lc{lc $_}->{count} += $ctags->{$_};
2733                if (not $ctags_lc{lc $_}->{topcount}
2734                    or $ctags_lc{lc $_}->{topcount} < $ctags->{$_}) {
2735                        $ctags_lc{lc $_}->{topcount} = $ctags->{$_};
2736                        $ctags_lc{lc $_}->{topname} = $_;
2737                }
2738        }
2739
2740        my $cloud;
2741        my $matched = $cgi->param('by_tag');
2742        if (eval { require HTML::TagCloud; 1; }) {
2743                $cloud = HTML::TagCloud->new;
2744                foreach my $ctag (sort keys %ctags_lc) {
2745                        # Pad the title with spaces so that the cloud looks
2746                        # less crammed.
2747                        my $title = esc_html($ctags_lc{$ctag}->{topname});
2748                        $title =~ s/ /&nbsp;/g;
2749                        $title =~ s/^/&nbsp;/g;
2750                        $title =~ s/$/&nbsp;/g;
2751                        if (defined $matched && $matched eq $ctag) {
2752                                $title = qq(<span class="match">$title</span>);
2753                        }
2754                        $cloud->add($title, href(project=>undef, ctag=>$ctag),
2755                                    $ctags_lc{$ctag}->{count});
2756                }
2757        } else {
2758                $cloud = {};
2759                foreach my $ctag (keys %ctags_lc) {
2760                        my $title = esc_html($ctags_lc{$ctag}->{topname}, -nbsp=>1);
2761                        if (defined $matched && $matched eq $ctag) {
2762                                $title = qq(<span class="match">$title</span>);
2763                        }
2764                        $cloud->{$ctag}{count} = $ctags_lc{$ctag}->{count};
2765                        $cloud->{$ctag}{ctag} =
2766                                $cgi->a({-href=>href(project=>undef, ctag=>$ctag)}, $title);
2767                }
2768        }
2769        return $cloud;
2770}
2771
2772sub git_show_project_tagcloud {
2773        my ($cloud, $count) = @_;
2774        if (ref $cloud eq 'HTML::TagCloud') {
2775                return $cloud->html_and_css($count);
2776        } else {
2777                my @tags = sort { $cloud->{$a}->{'count'} <=> $cloud->{$b}->{'count'} } keys %$cloud;
2778                return
2779                        '<div id="htmltagcloud"'.($project ? '' : ' align="center"').'>' .
2780                        join (', ', map {
2781                                $cloud->{$_}->{'ctag'}
2782                        } splice(@tags, 0, $count)) .
2783                        '</div>';
2784        }
2785}
2786
2787sub git_get_project_url_list {
2788        my $path = shift;
2789
2790        $git_dir = "$projectroot/$path";
2791        open my $fd, '<', "$git_dir/cloneurl"
2792                or return wantarray ?
2793                @{ config_to_multi(git_get_project_config('url')) } :
2794                   config_to_multi(git_get_project_config('url'));
2795        my @git_project_url_list = map { chomp; $_ } <$fd>;
2796        close $fd;
2797
2798        return wantarray ? @git_project_url_list : \@git_project_url_list;
2799}
2800
2801sub git_get_projects_list {
2802        my $filter = shift || '';
2803        my @list;
2804
2805        $filter =~ s/\.git$//;
2806
2807        if (-d $projects_list) {
2808                # search in directory
2809                my $dir = $projects_list;
2810                # remove the trailing "/"
2811                $dir =~ s!/+$!!;
2812                my $pfxlen = length("$projects_list");
2813                my $pfxdepth = ($projects_list =~ tr!/!!);
2814                # when filtering, search only given subdirectory
2815                if ($filter) {
2816                        $dir .= "/$filter";
2817                        $dir =~ s!/+$!!;
2818                }
2819
2820                File::Find::find({
2821                        follow_fast => 1, # follow symbolic links
2822                        follow_skip => 2, # ignore duplicates
2823                        dangling_symlinks => 0, # ignore dangling symlinks, silently
2824                        wanted => sub {
2825                                # global variables
2826                                our $project_maxdepth;
2827                                our $projectroot;
2828                                # skip project-list toplevel, if we get it.
2829                                return if (m!^[/.]$!);
2830                                # only directories can be git repositories
2831                                return unless (-d $_);
2832                                # don't traverse too deep (Find is super slow on os x)
2833                                # $project_maxdepth excludes depth of $projectroot
2834                                if (($File::Find::name =~ tr!/!!) - $pfxdepth > $project_maxdepth) {
2835                                        $File::Find::prune = 1;
2836                                        return;
2837                                }
2838
2839                                my $path = substr($File::Find::name, $pfxlen + 1);
2840                                # we check related file in $projectroot
2841                                if (check_export_ok("$projectroot/$path")) {
2842                                        push @list, { path => $path };
2843                                        $File::Find::prune = 1;
2844                                }
2845                        },
2846                }, "$dir");
2847
2848        } elsif (-f $projects_list) {
2849                # read from file(url-encoded):
2850                # 'git%2Fgit.git Linus+Torvalds'
2851                # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
2852                # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
2853                open my $fd, '<', $projects_list or return;
2854        PROJECT:
2855                while (my $line = <$fd>) {
2856                        chomp $line;
2857                        my ($path, $owner) = split ' ', $line;
2858                        $path = unescape($path);
2859                        $owner = unescape($owner);
2860                        if (!defined $path) {
2861                                next;
2862                        }
2863                        # if $filter is rpovided, check if $path begins with $filter
2864                        if ($filter && $path !~ m!^\Q$filter\E/!) {
2865                                next;
2866                        }
2867                        if (check_export_ok("$projectroot/$path")) {
2868                                my $pr = {
2869                                        path => $path,
2870                                        owner => to_utf8($owner),
2871                                };
2872                                push @list, $pr;
2873                        }
2874                }
2875                close $fd;
2876        }
2877        return @list;
2878}
2879
2880# written with help of Tree::Trie module (Perl Artistic License, GPL compatibile)
2881# as side effects it sets 'forks' field to list of forks for forked projects
2882sub filter_forks_from_projects_list {
2883        my $projects = shift;
2884
2885        my %trie; # prefix tree of directories (path components)
2886        # generate trie out of those directories that might contain forks
2887        foreach my $pr (@$projects) {
2888                my $path = $pr->{'path'};
2889                $path =~ s/\.git$//;      # forks of 'repo.git' are in 'repo/' directory
2890                next if ($path =~ m!/$!); # skip non-bare repositories, e.g. 'repo/.git'
2891                next unless ($path);      # skip '.git' repository: tests, git-instaweb
2892                next unless (-d "$projectroot/$path"); # containing directory exists
2893                $pr->{'forks'} = [];      # there can be 0 or more forks of project
2894
2895                # add to trie
2896                my @dirs = split('/', $path);
2897                # walk the trie, until either runs out of components or out of trie
2898                my $ref = \%trie;
2899                while (scalar @dirs &&
2900                       exists($ref->{$dirs[0]})) {
2901                        $ref = $ref->{shift @dirs};
2902                }
2903                # create rest of trie structure from rest of components
2904                foreach my $dir (@dirs) {
2905                        $ref = $ref->{$dir} = {};
2906                }
2907                # create end marker, store $pr as a data
2908                $ref->{''} = $pr if (!exists $ref->{''});
2909        }
2910
2911        # filter out forks, by finding shortest prefix match for paths
2912        my @filtered;
2913 PROJECT:
2914        foreach my $pr (@$projects) {
2915                # trie lookup
2916                my $ref = \%trie;
2917        DIR:
2918                foreach my $dir (split('/', $pr->{'path'})) {
2919                        if (exists $ref->{''}) {
2920                                # found [shortest] prefix, is a fork - skip it
2921                                push @{$ref->{''}{'forks'}}, $pr;
2922                                next PROJECT;
2923                        }
2924                        if (!exists $ref->{$dir}) {
2925                                # not in trie, cannot have prefix, not a fork
2926                                push @filtered, $pr;
2927                                next PROJECT;
2928                        }
2929                        # If the dir is there, we just walk one step down the trie.
2930                        $ref = $ref->{$dir};
2931                }
2932                # we ran out of trie
2933                # (shouldn't happen: it's either no match, or end marker)
2934                push @filtered, $pr;
2935        }
2936
2937        return @filtered;
2938}
2939
2940# note: fill_project_list_info must be run first,
2941# for 'descr_long' and 'ctags' to be filled
2942sub search_projects_list {
2943        my ($projlist, %opts) = @_;
2944        my $tagfilter  = $opts{'tagfilter'};
2945        my $searchtext = $opts{'searchtext'};
2946
2947        return @$projlist
2948                unless ($tagfilter || $searchtext);
2949
2950        my @projects;
2951 PROJECT:
2952        foreach my $pr (@$projlist) {
2953
2954                if ($tagfilter) {
2955                        next unless ref($pr->{'ctags'}) eq 'HASH';
2956                        next unless
2957                                grep { lc($_) eq lc($tagfilter) } keys %{$pr->{'ctags'}};
2958                }
2959
2960                if ($searchtext) {
2961                        next unless
2962                                $pr->{'path'} =~ /$searchtext/ ||
2963                                $pr->{'descr_long'} =~ /$searchtext/;
2964                }
2965
2966                push @projects, $pr;
2967        }
2968
2969        return @projects;
2970}
2971
2972our $gitweb_project_owner = undef;
2973sub git_get_project_list_from_file {
2974
2975        return if (defined $gitweb_project_owner);
2976
2977        $gitweb_project_owner = {};
2978        # read from file (url-encoded):
2979        # 'git%2Fgit.git Linus+Torvalds'
2980        # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
2981        # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
2982        if (-f $projects_list) {
2983                open(my $fd, '<', $projects_list);
2984                while (my $line = <$fd>) {
2985                        chomp $line;
2986                        my ($pr, $ow) = split ' ', $line;
2987                        $pr = unescape($pr);
2988                        $ow = unescape($ow);
2989                        $gitweb_project_owner->{$pr} = to_utf8($ow);
2990                }
2991                close $fd;
2992        }
2993}
2994
2995sub git_get_project_owner {
2996        my $project = shift;
2997        my $owner;
2998
2999        return undef unless $project;
3000        $git_dir = "$projectroot/$project";
3001
3002        if (!defined $gitweb_project_owner) {
3003                git_get_project_list_from_file();
3004        }
3005
3006        if (exists $gitweb_project_owner->{$project}) {
3007                $owner = $gitweb_project_owner->{$project};
3008        }
3009        if (!defined $owner){
3010                $owner = git_get_project_config('owner');
3011        }
3012        if (!defined $owner) {
3013                $owner = get_file_owner("$git_dir");
3014        }
3015
3016        return $owner;
3017}
3018
3019sub git_get_last_activity {
3020        my ($path) = @_;
3021        my $fd;
3022
3023        $git_dir = "$projectroot/$path";
3024        open($fd, "-|", git_cmd(), 'for-each-ref',
3025             '--format=%(committer)',
3026             '--sort=-committerdate',
3027             '--count=1',
3028             'refs/heads') or return;
3029        my $most_recent = <$fd>;
3030        close $fd or return;
3031        if (defined $most_recent &&
3032            $most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
3033                my $timestamp = $1;
3034                my $age = time - $timestamp;
3035                return ($age, age_string($age));
3036        }
3037        return (undef, undef);
3038}
3039
3040# Implementation note: when a single remote is wanted, we cannot use 'git
3041# remote show -n' because that command always work (assuming it's a remote URL
3042# if it's not defined), and we cannot use 'git remote show' because that would
3043# try to make a network roundtrip. So the only way to find if that particular
3044# remote is defined is to walk the list provided by 'git remote -v' and stop if
3045# and when we find what we want.
3046sub git_get_remotes_list {
3047        my $wanted = shift;
3048        my %remotes = ();
3049
3050        open my $fd, '-|' , git_cmd(), 'remote', '-v';
3051        return unless $fd;
3052        while (my $remote = <$fd>) {
3053                chomp $remote;
3054                $remote =~ s!\t(.*?)\s+\((\w+)\)$!!;
3055                next if $wanted and not $remote eq $wanted;
3056                my ($url, $key) = ($1, $2);
3057
3058                $remotes{$remote} ||= { 'heads' => () };
3059                $remotes{$remote}{$key} = $url;
3060        }
3061        close $fd or return;
3062        return wantarray ? %remotes : \%remotes;
3063}
3064
3065# Takes a hash of remotes as first parameter and fills it by adding the
3066# available remote heads for each of the indicated remotes.
3067sub fill_remote_heads {
3068        my $remotes = shift;
3069        my @heads = map { "remotes/$_" } keys %$remotes;
3070        my @remoteheads = git_get_heads_list(undef, @heads);
3071        foreach my $remote (keys %$remotes) {
3072                $remotes->{$remote}{'heads'} = [ grep {
3073                        $_->{'name'} =~ s!^$remote/!!
3074                        } @remoteheads ];
3075        }
3076}
3077
3078sub git_get_references {
3079        my $type = shift || "";
3080        my %refs;
3081        # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
3082        # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
3083        open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
3084                ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
3085                or return;
3086
3087        while (my $line = <$fd>) {
3088                chomp $line;
3089                if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type.*)$!) {
3090                        if (defined $refs{$1}) {
3091                                push @{$refs{$1}}, $2;
3092                        } else {
3093                                $refs{$1} = [ $2 ];
3094                        }
3095                }
3096        }
3097        close $fd or return;
3098        return \%refs;
3099}
3100
3101sub git_get_rev_name_tags {
3102        my $hash = shift || return undef;
3103
3104        open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
3105                or return;
3106        my $name_rev = <$fd>;
3107        close $fd;
3108
3109        if ($name_rev =~ m|^$hash tags/(.*)$|) {
3110                return $1;
3111        } else {
3112                # catches also '$hash undefined' output
3113                return undef;
3114        }
3115}
3116
3117## ----------------------------------------------------------------------
3118## parse to hash functions
3119
3120sub parse_date {
3121        my $epoch = shift;
3122        my $tz = shift || "-0000";
3123
3124        my %date;
3125        my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
3126        my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
3127        my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
3128        $date{'hour'} = $hour;
3129        $date{'minute'} = $min;
3130        $date{'mday'} = $mday;
3131        $date{'day'} = $days[$wday];
3132        $date{'month'} = $months[$mon];
3133        $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
3134                             $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
3135        $date{'mday-time'} = sprintf "%d %s %02d:%02d",
3136                             $mday, $months[$mon], $hour ,$min;
3137        $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
3138                             1900+$year, 1+$mon, $mday, $hour ,$min, $sec;
3139
3140        my ($tz_sign, $tz_hour, $tz_min) =
3141                ($tz =~ m/^([-+])(\d\d)(\d\d)$/);
3142        $tz_sign = ($tz_sign eq '-' ? -1 : +1);
3143        my $local = $epoch + $tz_sign*((($tz_hour*60) + $tz_min)*60);
3144        ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
3145        $date{'hour_local'} = $hour;
3146        $date{'minute_local'} = $min;
3147        $date{'tz_local'} = $tz;
3148        $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
3149                                  1900+$year, $mon+1, $mday,
3150                                  $hour, $min, $sec, $tz);
3151        return %date;
3152}
3153
3154sub parse_tag {
3155        my $tag_id = shift;
3156        my %tag;
3157        my @comment;
3158
3159        open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
3160        $tag{'id'} = $tag_id;
3161        while (my $line = <$fd>) {
3162                chomp $line;
3163                if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
3164                        $tag{'object'} = $1;
3165                } elsif ($line =~ m/^type (.+)$/) {
3166                        $tag{'type'} = $1;
3167                } elsif ($line =~ m/^tag (.+)$/) {
3168                        $tag{'name'} = $1;
3169                } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
3170                        $tag{'author'} = $1;
3171                        $tag{'author_epoch'} = $2;
3172                        $tag{'author_tz'} = $3;
3173                        if ($tag{'author'} =~ m/^([^<]+) <([^>]*)>/) {
3174                                $tag{'author_name'}  = $1;
3175                                $tag{'author_email'} = $2;
3176                        } else {
3177                                $tag{'author_name'} = $tag{'author'};
3178                        }
3179                } elsif ($line =~ m/--BEGIN/) {
3180                        push @comment, $line;
3181                        last;
3182                } elsif ($line eq "") {
3183                        last;
3184                }
3185        }
3186        push @comment, <$fd>;
3187        $tag{'comment'} = \@comment;
3188        close $fd or return;
3189        if (!defined $tag{'name'}) {
3190                return
3191        };
3192        return %tag
3193}
3194
3195sub parse_commit_text {
3196        my ($commit_text, $withparents) = @_;
3197        my @commit_lines = split '\n', $commit_text;
3198        my %co;
3199
3200        pop @commit_lines; # Remove '\0'
3201
3202        if (! @commit_lines) {
3203                return;
3204        }
3205
3206        my $header = shift @commit_lines;
3207        if ($header !~ m/^[0-9a-fA-F]{40}/) {
3208                return;
3209        }
3210        ($co{'id'}, my @parents) = split ' ', $header;
3211        while (my $line = shift @commit_lines) {
3212                last if $line eq "\n";
3213                if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
3214                        $co{'tree'} = $1;
3215                } elsif ((!defined $withparents) && ($line =~ m/^parent ([0-9a-fA-F]{40})$/)) {
3216                        push @parents, $1;
3217                } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
3218                        $co{'author'} = to_utf8($1);
3219                        $co{'author_epoch'} = $2;
3220                        $co{'author_tz'} = $3;
3221                        if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
3222                                $co{'author_name'}  = $1;
3223                                $co{'author_email'} = $2;
3224                        } else {
3225                                $co{'author_name'} = $co{'author'};
3226                        }
3227                } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
3228                        $co{'committer'} = to_utf8($1);
3229                        $co{'committer_epoch'} = $2;
3230                        $co{'committer_tz'} = $3;
3231                        if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
3232                                $co{'committer_name'}  = $1;
3233                                $co{'committer_email'} = $2;
3234                        } else {
3235                                $co{'committer_name'} = $co{'committer'};
3236                        }
3237                }
3238        }
3239        if (!defined $co{'tree'}) {
3240                return;
3241        };
3242        $co{'parents'} = \@parents;
3243        $co{'parent'} = $parents[0];
3244
3245        foreach my $title (@commit_lines) {
3246                $title =~ s/^    //;
3247                if ($title ne "") {
3248                        $co{'title'} = chop_str($title, 80, 5);
3249                        # remove leading stuff of merges to make the interesting part visible
3250                        if (length($title) > 50) {
3251                                $title =~ s/^Automatic //;
3252                                $title =~ s/^merge (of|with) /Merge ... /i;
3253                                if (length($title) > 50) {
3254                                        $title =~ s/(http|rsync):\/\///;
3255                                }
3256                                if (length($title) > 50) {
3257                                        $title =~ s/(master|www|rsync)\.//;
3258                                }
3259                                if (length($title) > 50) {
3260                                        $title =~ s/kernel.org:?//;
3261                                }
3262                                if (length($title) > 50) {
3263                                        $title =~ s/\/pub\/scm//;
3264                                }
3265                        }
3266                        $co{'title_short'} = chop_str($title, 50, 5);
3267                        last;
3268                }
3269        }
3270        if (! defined $co{'title'} || $co{'title'} eq "") {
3271                $co{'title'} = $co{'title_short'} = '(no commit message)';
3272        }
3273        # remove added spaces
3274        foreach my $line (@commit_lines) {
3275                $line =~ s/^    //;
3276        }
3277        $co{'comment'} = \@commit_lines;
3278
3279        my $age = time - $co{'committer_epoch'};
3280        $co{'age'} = $age;
3281        $co{'age_string'} = age_string($age);
3282        my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
3283        if ($age > 60*60*24*7*2) {
3284                $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
3285                $co{'age_string_age'} = $co{'age_string'};
3286        } else {
3287                $co{'age_string_date'} = $co{'age_string'};
3288                $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
3289        }
3290        return %co;
3291}
3292
3293sub parse_commit {
3294        my ($commit_id) = @_;
3295        my %co;
3296
3297        local $/ = "\0";
3298
3299        open my $fd, "-|", git_cmd(), "rev-list",
3300                "--parents",
3301                "--header",
3302                "--max-count=1",
3303                $commit_id,
3304                "--",
3305                or die_error(500, "Open git-rev-list failed");
3306        %co = parse_commit_text(<$fd>, 1);
3307        close $fd;
3308
3309        return %co;
3310}
3311
3312sub parse_commits {
3313        my ($commit_id, $maxcount, $skip, $filename, @args) = @_;
3314        my @cos;
3315
3316        $maxcount ||= 1;
3317        $skip ||= 0;
3318
3319        local $/ = "\0";
3320
3321        open my $fd, "-|", git_cmd(), "rev-list",
3322                "--header",
3323                @args,
3324                ("--max-count=" . $maxcount),
3325                ("--skip=" . $skip),
3326                @extra_options,
3327                $commit_id,
3328                "--",
3329                ($filename ? ($filename) : ())
3330                or die_error(500, "Open git-rev-list failed");
3331        while (my $line = <$fd>) {
3332                my %co = parse_commit_text($line);
3333                push @cos, \%co;
3334        }
3335        close $fd;
3336
3337        return wantarray ? @cos : \@cos;
3338}
3339
3340# parse line of git-diff-tree "raw" output
3341sub parse_difftree_raw_line {
3342        my $line = shift;
3343        my %res;
3344
3345        # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
3346        # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
3347        if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
3348                $res{'from_mode'} = $1;
3349                $res{'to_mode'} = $2;
3350                $res{'from_id'} = $3;
3351                $res{'to_id'} = $4;
3352                $res{'status'} = $5;
3353                $res{'similarity'} = $6;
3354                if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
3355                        ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
3356                } else {
3357                        $res{'from_file'} = $res{'to_file'} = $res{'file'} = unquote($7);
3358                }
3359        }
3360        # '::100755 100755 100755 60e79ca1b01bc8b057abe17ddab484699a7f5fdb 94067cc5f73388f33722d52ae02f44692bc07490 94067cc5f73388f33722d52ae02f44692bc07490 MR git-gui/git-gui.sh'
3361        # combined diff (for merge commit)
3362        elsif ($line =~ s/^(::+)((?:[0-7]{6} )+)((?:[0-9a-fA-F]{40} )+)([a-zA-Z]+)\t(.*)$//) {
3363                $res{'nparents'}  = length($1);
3364                $res{'from_mode'} = [ split(' ', $2) ];
3365                $res{'to_mode'} = pop @{$res{'from_mode'}};
3366                $res{'from_id'} = [ split(' ', $3) ];
3367                $res{'to_id'} = pop @{$res{'from_id'}};
3368                $res{'status'} = [ split('', $4) ];
3369                $res{'to_file'} = unquote($5);
3370        }
3371        # 'c512b523472485aef4fff9e57b229d9d243c967f'
3372        elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
3373                $res{'commit'} = $1;
3374        }
3375
3376        return wantarray ? %res : \%res;
3377}
3378
3379# wrapper: return parsed line of git-diff-tree "raw" output
3380# (the argument might be raw line, or parsed info)
3381sub parsed_difftree_line {
3382        my $line_or_ref = shift;
3383
3384        if (ref($line_or_ref) eq "HASH") {
3385                # pre-parsed (or generated by hand)
3386                return $line_or_ref;
3387        } else {
3388                return parse_difftree_raw_line($line_or_ref);
3389        }
3390}
3391
3392# parse line of git-ls-tree output
3393sub parse_ls_tree_line {
3394        my $line = shift;
3395        my %opts = @_;
3396        my %res;
3397
3398        if ($opts{'-l'}) {
3399                #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa   16717  panic.c'
3400                $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40}) +(-|[0-9]+)\t(.+)$/s;
3401
3402                $res{'mode'} = $1;
3403                $res{'type'} = $2;
3404                $res{'hash'} = $3;
3405                $res{'size'} = $4;
3406                if ($opts{'-z'}) {
3407                        $res{'name'} = $5;
3408                } else {
3409                        $res{'name'} = unquote($5);
3410                }
3411        } else {
3412                #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
3413                $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
3414
3415                $res{'mode'} = $1;
3416                $res{'type'} = $2;
3417                $res{'hash'} = $3;
3418                if ($opts{'-z'}) {
3419                        $res{'name'} = $4;
3420                } else {
3421                        $res{'name'} = unquote($4);
3422                }
3423        }
3424
3425        return wantarray ? %res : \%res;
3426}
3427
3428# generates _two_ hashes, references to which are passed as 2 and 3 argument
3429sub parse_from_to_diffinfo {
3430        my ($diffinfo, $from, $to, @parents) = @_;
3431
3432        if ($diffinfo->{'nparents'}) {
3433                # combined diff
3434                $from->{'file'} = [];
3435                $from->{'href'} = [];
3436                fill_from_file_info($diffinfo, @parents)
3437                        unless exists $diffinfo->{'from_file'};
3438                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
3439                        $from->{'file'}[$i] =
3440                                defined $diffinfo->{'from_file'}[$i] ?
3441                                        $diffinfo->{'from_file'}[$i] :
3442                                        $diffinfo->{'to_file'};
3443                        if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
3444                                $from->{'href'}[$i] = href(action=>"blob",
3445                                                           hash_base=>$parents[$i],
3446                                                           hash=>$diffinfo->{'from_id'}[$i],
3447                                                           file_name=>$from->{'file'}[$i]);
3448                        } else {
3449                                $from->{'href'}[$i] = undef;
3450                        }
3451                }
3452        } else {
3453                # ordinary (not combined) diff
3454                $from->{'file'} = $diffinfo->{'from_file'};
3455                if ($diffinfo->{'status'} ne "A") { # not new (added) file
3456                        $from->{'href'} = href(action=>"blob", hash_base=>$hash_parent,
3457                                               hash=>$diffinfo->{'from_id'},
3458                                               file_name=>$from->{'file'});
3459                } else {
3460                        delete $from->{'href'};
3461                }
3462        }
3463
3464        $to->{'file'} = $diffinfo->{'to_file'};
3465        if (!is_deleted($diffinfo)) { # file exists in result
3466                $to->{'href'} = href(action=>"blob", hash_base=>$hash,
3467                                     hash=>$diffinfo->{'to_id'},
3468                                     file_name=>$to->{'file'});
3469        } else {
3470                delete $to->{'href'};
3471        }
3472}
3473
3474## ......................................................................
3475## parse to array of hashes functions
3476
3477sub git_get_heads_list {
3478        my ($limit, @classes) = @_;
3479        @classes = ('heads') unless @classes;
3480        my @patterns = map { "refs/$_" } @classes;
3481        my @headslist;
3482
3483        open my $fd, '-|', git_cmd(), 'for-each-ref',
3484                ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
3485                '--format=%(objectname) %(refname) %(subject)%00%(committer)',
3486                @patterns
3487                or return;
3488        while (my $line = <$fd>) {
3489                my %ref_item;
3490
3491                chomp $line;
3492                my ($refinfo, $committerinfo) = split(/\0/, $line);
3493                my ($hash, $name, $title) = split(' ', $refinfo, 3);
3494                my ($committer, $epoch, $tz) =
3495                        ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
3496                $ref_item{'fullname'}  = $name;
3497                $name =~ s!^refs/(?:head|remote)s/!!;
3498
3499                $ref_item{'name'}  = $name;
3500                $ref_item{'id'}    = $hash;
3501                $ref_item{'title'} = $title || '(no commit message)';
3502                $ref_item{'epoch'} = $epoch;
3503                if ($epoch) {
3504                        $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
3505                } else {
3506                        $ref_item{'age'} = "unknown";
3507                }
3508
3509                push @headslist, \%ref_item;
3510        }
3511        close $fd;
3512
3513        return wantarray ? @headslist : \@headslist;
3514}
3515
3516sub git_get_tags_list {
3517        my $limit = shift;
3518        my @tagslist;
3519
3520        open my $fd, '-|', git_cmd(), 'for-each-ref',
3521                ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
3522                '--format=%(objectname) %(objecttype) %(refname) '.
3523                '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
3524                'refs/tags'
3525                or return;
3526        while (my $line = <$fd>) {
3527                my %ref_item;
3528
3529                chomp $line;
3530                my ($refinfo, $creatorinfo) = split(/\0/, $line);
3531                my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
3532                my ($creator, $epoch, $tz) =
3533                        ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
3534                $ref_item{'fullname'} = $name;
3535                $name =~ s!^refs/tags/!!;
3536
3537                $ref_item{'type'} = $type;
3538                $ref_item{'id'} = $id;
3539                $ref_item{'name'} = $name;
3540                if ($type eq "tag") {
3541                        $ref_item{'subject'} = $title;
3542                        $ref_item{'reftype'} = $reftype;
3543                        $ref_item{'refid'}   = $refid;
3544                } else {
3545                        $ref_item{'reftype'} = $type;
3546                        $ref_item{'refid'}   = $id;
3547                }
3548
3549                if ($type eq "tag" || $type eq "commit") {
3550                        $ref_item{'epoch'} = $epoch;
3551                        if ($epoch) {
3552                                $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
3553                        } else {
3554                                $ref_item{'age'} = "unknown";
3555                        }
3556                }
3557
3558                push @tagslist, \%ref_item;
3559        }
3560        close $fd;
3561
3562        return wantarray ? @tagslist : \@tagslist;
3563}
3564
3565## ----------------------------------------------------------------------
3566## filesystem-related functions
3567
3568sub get_file_owner {
3569        my $path = shift;
3570
3571        my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
3572        my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
3573        if (!defined $gcos) {
3574                return undef;
3575        }
3576        my $owner = $gcos;
3577        $owner =~ s/[,;].*$//;
3578        return to_utf8($owner);
3579}
3580
3581# assume that file exists
3582sub insert_file {
3583        my $filename = shift;
3584
3585        open my $fd, '<', $filename;
3586        print map { to_utf8($_) } <$fd>;
3587        close $fd;
3588}
3589
3590## ......................................................................
3591## mimetype related functions
3592
3593sub mimetype_guess_file {
3594        my $filename = shift;
3595        my $mimemap = shift;
3596        -r $mimemap or return undef;
3597
3598        my %mimemap;
3599        open(my $mh, '<', $mimemap) or return undef;
3600        while (<$mh>) {
3601                next if m/^#/; # skip comments
3602                my ($mimetype, @exts) = split(/\s+/);
3603                foreach my $ext (@exts) {
3604                        $mimemap{$ext} = $mimetype;
3605                }
3606        }
3607        close($mh);
3608
3609        $filename =~ /\.([^.]*)$/;
3610        return $mimemap{$1};
3611}
3612
3613sub mimetype_guess {
3614        my $filename = shift;
3615        my $mime;
3616        $filename =~ /\./ or return undef;
3617
3618        if ($mimetypes_file) {
3619                my $file = $mimetypes_file;
3620                if ($file !~ m!^/!) { # if it is relative path
3621                        # it is relative to project
3622                        $file = "$projectroot/$project/$file";
3623                }
3624                $mime = mimetype_guess_file($filename, $file);
3625        }
3626        $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
3627        return $mime;
3628}
3629
3630sub blob_mimetype {
3631        my $fd = shift;
3632        my $filename = shift;
3633
3634        if ($filename) {
3635                my $mime = mimetype_guess($filename);
3636                $mime and return $mime;
3637        }
3638
3639        # just in case
3640        return $default_blob_plain_mimetype unless $fd;
3641
3642        if (-T $fd) {
3643                return 'text/plain';
3644        } elsif (! $filename) {
3645                return 'application/octet-stream';
3646        } elsif ($filename =~ m/\.png$/i) {
3647                return 'image/png';
3648        } elsif ($filename =~ m/\.gif$/i) {
3649                return 'image/gif';
3650        } elsif ($filename =~ m/\.jpe?g$/i) {
3651                return 'image/jpeg';
3652        } else {
3653                return 'application/octet-stream';
3654        }
3655}
3656
3657sub blob_contenttype {
3658        my ($fd, $file_name, $type) = @_;
3659
3660        $type ||= blob_mimetype($fd, $file_name);
3661        if ($type eq 'text/plain' && defined $default_text_plain_charset) {
3662                $type .= "; charset=$default_text_plain_charset";
3663        }
3664
3665        return $type;
3666}
3667
3668# guess file syntax for syntax highlighting; return undef if no highlighting
3669# the name of syntax can (in the future) depend on syntax highlighter used
3670sub guess_file_syntax {
3671        my ($highlight, $mimetype, $file_name) = @_;
3672        return undef unless ($highlight && defined $file_name);
3673        my $basename = basename($file_name, '.in');
3674        return $highlight_basename{$basename}
3675                if exists $highlight_basename{$basename};
3676
3677        $basename =~ /\.([^.]*)$/;
3678        my $ext = $1 or return undef;
3679        return $highlight_ext{$ext}
3680                if exists $highlight_ext{$ext};
3681
3682        return undef;
3683}
3684
3685# run highlighter and return FD of its output,
3686# or return original FD if no highlighting
3687sub run_highlighter {
3688        my ($fd, $highlight, $syntax) = @_;
3689        return $fd unless ($highlight && defined $syntax);
3690
3691        close $fd;
3692        open $fd, quote_command(git_cmd(), "cat-file", "blob", $hash)." | ".
3693                  quote_command($highlight_bin).
3694                  " --replace-tabs=8 --fragment --syntax $syntax |"
3695                or die_error(500, "Couldn't open file or run syntax highlighter");
3696        return $fd;
3697}
3698
3699## ======================================================================
3700## functions printing HTML: header, footer, error page
3701
3702sub get_page_title {
3703        my $title = to_utf8($site_name);
3704
3705        return $title unless (defined $project);
3706        $title .= " - " . to_utf8($project);
3707
3708        return $title unless (defined $action);
3709        $title .= "/$action"; # $action is US-ASCII (7bit ASCII)
3710
3711        return $title unless (defined $file_name);
3712        $title .= " - " . esc_path($file_name);
3713        if ($action eq "tree" && $file_name !~ m|/$|) {
3714                $title .= "/";
3715        }
3716
3717        return $title;
3718}
3719
3720sub get_content_type_html {
3721        # require explicit support from the UA if we are to send the page as
3722        # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
3723        # we have to do this because MSIE sometimes globs '*/*', pretending to
3724        # support xhtml+xml but choking when it gets what it asked for.
3725        if (defined $cgi->http('HTTP_ACCEPT') &&
3726            $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
3727            $cgi->Accept('application/xhtml+xml') != 0) {
3728                return 'application/xhtml+xml';
3729        } else {
3730                return 'text/html';
3731        }
3732}
3733
3734sub print_feed_meta {
3735        if (defined $project) {
3736                my %href_params = get_feed_info();
3737                if (!exists $href_params{'-title'}) {
3738                        $href_params{'-title'} = 'log';
3739                }
3740
3741                foreach my $format (qw(RSS Atom)) {
3742                        my $type = lc($format);
3743                        my %link_attr = (
3744                                '-rel' => 'alternate',
3745                                '-title' => esc_attr("$project - $href_params{'-title'} - $format feed"),
3746                                '-type' => "application/$type+xml"
3747                        );
3748
3749                        $href_params{'action'} = $type;
3750                        $link_attr{'-href'} = href(%href_params);
3751                        print "<link ".
3752                              "rel=\"$link_attr{'-rel'}\" ".
3753                              "title=\"$link_attr{'-title'}\" ".
3754                              "href=\"$link_attr{'-href'}\" ".
3755                              "type=\"$link_attr{'-type'}\" ".
3756                              "/>\n";
3757
3758                        $href_params{'extra_options'} = '--no-merges';
3759                        $link_attr{'-href'} = href(%href_params);
3760                        $link_attr{'-title'} .= ' (no merges)';
3761                        print "<link ".
3762                              "rel=\"$link_attr{'-rel'}\" ".
3763                              "title=\"$link_attr{'-title'}\" ".
3764                              "href=\"$link_attr{'-href'}\" ".
3765                              "type=\"$link_attr{'-type'}\" ".
3766                              "/>\n";
3767                }
3768
3769        } else {
3770                printf('<link rel="alternate" title="%s projects list" '.
3771                       'href="%s" type="text/plain; charset=utf-8" />'."\n",
3772                       esc_attr($site_name), href(project=>undef, action=>"project_index"));
3773                printf('<link rel="alternate" title="%s projects feeds" '.
3774                       'href="%s" type="text/x-opml" />'."\n",
3775                       esc_attr($site_name), href(project=>undef, action=>"opml"));
3776        }
3777}
3778
3779sub print_header_links {
3780        my $status = shift;
3781
3782        # print out each stylesheet that exist, providing backwards capability
3783        # for those people who defined $stylesheet in a config file
3784        if (defined $stylesheet) {
3785                print '<link rel="stylesheet" type="text/css" href="'.esc_url($stylesheet).'"/>'."\n";
3786        } else {
3787                foreach my $stylesheet (@stylesheets) {
3788                        next unless $stylesheet;
3789                        print '<link rel="stylesheet" type="text/css" href="'.esc_url($stylesheet).'"/>'."\n";
3790                }
3791        }
3792        print_feed_meta()
3793                if ($status eq '200 OK');
3794        if (defined $favicon) {
3795                print qq(<link rel="shortcut icon" href=").esc_url($favicon).qq(" type="image/png" />\n);
3796        }
3797}
3798
3799sub print_nav_breadcrumbs {
3800        my %opts = @_;
3801
3802        print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
3803        if (defined $project) {
3804                print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
3805                if (defined $action) {
3806                        my $action_print = $action ;
3807                        if (defined $opts{-action_extra}) {
3808                                $action_print = $cgi->a({-href => href(action=>$action)},
3809                                        $action);
3810                        }
3811                        print " / $action_print";
3812                }
3813                if (defined $opts{-action_extra}) {
3814                        print " / $opts{-action_extra}";
3815                }
3816                print "\n";
3817        }
3818}
3819
3820sub print_search_form {
3821        if (!defined $searchtext) {
3822                $searchtext = "";
3823        }
3824        my $search_hash;
3825        if (defined $hash_base) {
3826                $search_hash = $hash_base;
3827        } elsif (defined $hash) {
3828                $search_hash = $hash;
3829        } else {
3830                $search_hash = "HEAD";
3831        }
3832        my $action = $my_uri;
3833        my $use_pathinfo = gitweb_check_feature('pathinfo');
3834        if ($use_pathinfo) {
3835                $action .= "/".esc_url($project);
3836        }
3837        print $cgi->startform(-method => "get", -action => $action) .
3838              "<div class=\"search\">\n" .
3839              (!$use_pathinfo &&
3840              $cgi->input({-name=>"p", -value=>$project, -type=>"hidden"}) . "\n") .
3841              $cgi->input({-name=>"a", -value=>"search", -type=>"hidden"}) . "\n" .
3842              $cgi->input({-name=>"h", -value=>$search_hash, -type=>"hidden"}) . "\n" .
3843              $cgi->popup_menu(-name => 'st', -default => 'commit',
3844                               -values => ['commit', 'grep', 'author', 'committer', 'pickaxe']) .
3845              $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
3846              " search:\n",
3847              $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
3848              "<span title=\"Extended regular expression\">" .
3849              $cgi->checkbox(-name => 'sr', -value => 1, -label => 're',
3850                             -checked => $search_use_regexp) .
3851              "</span>" .
3852              "</div>" .
3853              $cgi->end_form() . "\n";
3854}
3855
3856sub git_header_html {
3857        my $status = shift || "200 OK";
3858        my $expires = shift;
3859        my %opts = @_;
3860
3861        my $title = get_page_title();
3862        my $content_type = get_content_type_html();
3863        print $cgi->header(-type=>$content_type, -charset => 'utf-8',
3864                           -status=> $status, -expires => $expires)
3865                unless ($opts{'-no_http_header'});
3866        my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
3867        print <<EOF;
3868<?xml version="1.0" encoding="utf-8"?>
3869<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
3870<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
3871<!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
3872<!-- git core binaries version $git_version -->
3873<head>
3874<meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
3875<meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
3876<meta name="robots" content="index, nofollow"/>
3877<title>$title</title>
3878EOF
3879        # the stylesheet, favicon etc urls won't work correctly with path_info
3880        # unless we set the appropriate base URL
3881        if ($ENV{'PATH_INFO'}) {
3882                print "<base href=\"".esc_url($base_url)."\" />\n";
3883        }
3884        print_header_links($status);
3885
3886        if (defined $site_html_head_string) {
3887                print to_utf8($site_html_head_string);
3888        }
3889
3890        print "</head>\n" .
3891              "<body>\n";
3892
3893        if (defined $site_header && -f $site_header) {
3894                insert_file($site_header);
3895        }
3896
3897        print "<div class=\"page_header\">\n";
3898        if (defined $logo) {
3899                print $cgi->a({-href => esc_url($logo_url),
3900                               -title => $logo_label},
3901                              $cgi->img({-src => esc_url($logo),
3902                                         -width => 72, -height => 27,
3903                                         -alt => "git",
3904                                         -class => "logo"}));
3905        }
3906        print_nav_breadcrumbs(%opts);
3907        print "</div>\n";
3908
3909        my $have_search = gitweb_check_feature('search');
3910        if (defined $project && $have_search) {
3911                print_search_form();
3912        }
3913}
3914
3915sub git_footer_html {
3916        my $feed_class = 'rss_logo';
3917
3918        print "<div class=\"page_footer\">\n";
3919        if (defined $project) {
3920                my $descr = git_get_project_description($project);
3921                if (defined $descr) {
3922                        print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
3923                }
3924
3925                my %href_params = get_feed_info();
3926                if (!%href_params) {
3927                        $feed_class .= ' generic';
3928                }
3929                $href_params{'-title'} ||= 'log';
3930
3931                foreach my $format (qw(RSS Atom)) {
3932                        $href_params{'action'} = lc($format);
3933                        print $cgi->a({-href => href(%href_params),
3934                                      -title => "$href_params{'-title'} $format feed",
3935                                      -class => $feed_class}, $format)."\n";
3936                }
3937
3938        } else {
3939                print $cgi->a({-href => href(project=>undef, action=>"opml"),
3940                              -class => $feed_class}, "OPML") . " ";
3941                print $cgi->a({-href => href(project=>undef, action=>"project_index"),
3942                              -class => $feed_class}, "TXT") . "\n";
3943        }
3944        print "</div>\n"; # class="page_footer"
3945
3946        if (defined $t0 && gitweb_check_feature('timed')) {
3947                print "<div id=\"generating_info\">\n";
3948                print 'This page took '.
3949                      '<span id="generating_time" class="time_span">'.
3950                      tv_interval($t0, [ gettimeofday() ]).
3951                      ' seconds </span>'.
3952                      ' and '.
3953                      '<span id="generating_cmd">'.
3954                      $number_of_git_cmds.
3955                      '</span> git commands '.
3956                      " to generate.\n";
3957                print "</div>\n"; # class="page_footer"
3958        }
3959
3960        if (defined $site_footer && -f $site_footer) {
3961                insert_file($site_footer);
3962        }
3963
3964        print qq!<script type="text/javascript" src="!.esc_url($javascript).qq!"></script>\n!;
3965        if (defined $action &&
3966            $action eq 'blame_incremental') {
3967                print qq!<script type="text/javascript">\n!.
3968                      qq!startBlame("!. href(action=>"blame_data", -replay=>1) .qq!",\n!.
3969                      qq!           "!. href() .qq!");\n!.
3970                      qq!</script>\n!;
3971        } else {
3972                my ($jstimezone, $tz_cookie, $datetime_class) =
3973                        gitweb_get_feature('javascript-timezone');
3974
3975                print qq!<script type="text/javascript">\n!.
3976                      qq!window.onload = function () {\n!;
3977                if (gitweb_check_feature('javascript-actions')) {
3978                        print qq!       fixLinks();\n!;
3979                }
3980                if ($jstimezone && $tz_cookie && $datetime_class) {
3981                        print qq!       var tz_cookie = { name: '$tz_cookie', expires: 14, path: '/' };\n!. # in days
3982                              qq!       onloadTZSetup('$jstimezone', tz_cookie, '$datetime_class');\n!;
3983                }
3984                print qq!};\n!.
3985                      qq!</script>\n!;
3986        }
3987
3988        print "</body>\n" .
3989              "</html>";
3990}
3991
3992# die_error(<http_status_code>, <error_message>[, <detailed_html_description>])
3993# Example: die_error(404, 'Hash not found')
3994# By convention, use the following status codes (as defined in RFC 2616):
3995# 400: Invalid or missing CGI parameters, or
3996#      requested object exists but has wrong type.
3997# 403: Requested feature (like "pickaxe" or "snapshot") not enabled on
3998#      this server or project.
3999# 404: Requested object/revision/project doesn't exist.
4000# 500: The server isn't configured properly, or
4001#      an internal error occurred (e.g. failed assertions caused by bugs), or
4002#      an unknown error occurred (e.g. the git binary died unexpectedly).
4003# 503: The server is currently unavailable (because it is overloaded,
4004#      or down for maintenance).  Generally, this is a temporary state.
4005sub die_error {
4006        my $status = shift || 500;
4007        my $error = esc_html(shift) || "Internal Server Error";
4008        my $extra = shift;
4009        my %opts = @_;
4010
4011        my %http_responses = (
4012                400 => '400 Bad Request',
4013                403 => '403 Forbidden',
4014                404 => '404 Not Found',
4015                500 => '500 Internal Server Error',
4016                503 => '503 Service Unavailable',
4017        );
4018        git_header_html($http_responses{$status}, undef, %opts);
4019        print <<EOF;
4020<div class="page_body">
4021<br /><br />
4022$status - $error
4023<br />
4024EOF
4025        if (defined $extra) {
4026                print "<hr />\n" .
4027                      "$extra\n";
4028        }
4029        print "</div>\n";
4030
4031        git_footer_html();
4032        goto DONE_GITWEB
4033                unless ($opts{'-error_handler'});
4034}
4035
4036## ----------------------------------------------------------------------
4037## functions printing or outputting HTML: navigation
4038
4039sub git_print_page_nav {
4040        my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
4041        $extra = '' if !defined $extra; # pager or formats
4042
4043        my @navs = qw(summary shortlog log commit commitdiff tree);
4044        if ($suppress) {
4045                @navs = grep { $_ ne $suppress } @navs;
4046        }
4047
4048        my %arg = map { $_ => {action=>$_} } @navs;
4049        if (defined $head) {
4050                for (qw(commit commitdiff)) {
4051                        $arg{$_}{'hash'} = $head;
4052                }
4053                if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
4054                        for (qw(shortlog log)) {
4055                                $arg{$_}{'hash'} = $head;
4056                        }
4057                }
4058        }
4059
4060        $arg{'tree'}{'hash'} = $treehead if defined $treehead;
4061        $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
4062
4063        my @actions = gitweb_get_feature('actions');
4064        my %repl = (
4065                '%' => '%',
4066                'n' => $project,         # project name
4067                'f' => $git_dir,         # project path within filesystem
4068                'h' => $treehead || '',  # current hash ('h' parameter)
4069                'b' => $treebase || '',  # hash base ('hb' parameter)
4070        );
4071        while (@actions) {
4072                my ($label, $link, $pos) = splice(@actions,0,3);
4073                # insert
4074                @navs = map { $_ eq $pos ? ($_, $label) : $_ } @navs;
4075                # munch munch
4076                $link =~ s/%([%nfhb])/$repl{$1}/g;
4077                $arg{$label}{'_href'} = $link;
4078        }
4079
4080        print "<div class=\"page_nav\">\n" .
4081                (join " | ",
4082                 map { $_ eq $current ?
4083                       $_ : $cgi->a({-href => ($arg{$_}{_href} ? $arg{$_}{_href} : href(%{$arg{$_}}))}, "$_")
4084                 } @navs);
4085        print "<br/>\n$extra<br/>\n" .
4086              "</div>\n";
4087}
4088
4089# returns a submenu for the nagivation of the refs views (tags, heads,
4090# remotes) with the current view disabled and the remotes view only
4091# available if the feature is enabled
4092sub format_ref_views {
4093        my ($current) = @_;
4094        my @ref_views = qw{tags heads};
4095        push @ref_views, 'remotes' if gitweb_check_feature('remote_heads');
4096        return join " | ", map {
4097                $_ eq $current ? $_ :
4098                $cgi->a({-href => href(action=>$_)}, $_)
4099        } @ref_views
4100}
4101
4102sub format_paging_nav {
4103        my ($action, $page, $has_next_link) = @_;
4104        my $paging_nav;
4105
4106
4107        if ($page > 0) {
4108                $paging_nav .=
4109                        $cgi->a({-href => href(-replay=>1, page=>undef)}, "first") .
4110                        " &sdot; " .
4111                        $cgi->a({-href => href(-replay=>1, page=>$page-1),
4112                                 -accesskey => "p", -title => "Alt-p"}, "prev");
4113        } else {
4114                $paging_nav .= "first &sdot; prev";
4115        }
4116
4117        if ($has_next_link) {
4118                $paging_nav .= " &sdot; " .
4119                        $cgi->a({-href => href(-replay=>1, page=>$page+1),
4120                                 -accesskey => "n", -title => "Alt-n"}, "next");
4121        } else {
4122                $paging_nav .= " &sdot; next";
4123        }
4124
4125        return $paging_nav;
4126}
4127
4128## ......................................................................
4129## functions printing or outputting HTML: div
4130
4131sub git_print_header_div {
4132        my ($action, $title, $hash, $hash_base) = @_;
4133        my %args = ();
4134
4135        $args{'action'} = $action;
4136        $args{'hash'} = $hash if $hash;
4137        $args{'hash_base'} = $hash_base if $hash_base;
4138
4139        print "<div class=\"header\">\n" .
4140              $cgi->a({-href => href(%args), -class => "title"},
4141              $title ? $title : $action) .
4142              "\n</div>\n";
4143}
4144
4145sub format_repo_url {
4146        my ($name, $url) = @_;
4147        return "<tr class=\"metadata_url\"><td>$name</td><td>$url</td></tr>\n";
4148}
4149
4150# Group output by placing it in a DIV element and adding a header.
4151# Options for start_div() can be provided by passing a hash reference as the
4152# first parameter to the function.
4153# Options to git_print_header_div() can be provided by passing an array
4154# reference. This must follow the options to start_div if they are present.
4155# The content can be a scalar, which is output as-is, a scalar reference, which
4156# is output after html escaping, an IO handle passed either as *handle or
4157# *handle{IO}, or a function reference. In the latter case all following
4158# parameters will be taken as argument to the content function call.
4159sub git_print_section {
4160        my ($div_args, $header_args, $content);
4161        my $arg = shift;
4162        if (ref($arg) eq 'HASH') {
4163                $div_args = $arg;
4164                $arg = shift;
4165        }
4166        if (ref($arg) eq 'ARRAY') {
4167                $header_args = $arg;
4168                $arg = shift;
4169        }
4170        $content = $arg;
4171
4172        print $cgi->start_div($div_args);
4173        git_print_header_div(@$header_args);
4174
4175        if (ref($content) eq 'CODE') {
4176                $content->(@_);
4177        } elsif (ref($content) eq 'SCALAR') {
4178                print esc_html($$content);
4179        } elsif (ref($content) eq 'GLOB' or ref($content) eq 'IO::Handle') {
4180                print <$content>;
4181        } elsif (!ref($content) && defined($content)) {
4182                print $content;
4183        }
4184
4185        print $cgi->end_div;
4186}
4187
4188sub format_timestamp_html {
4189        my $date = shift;
4190        my $strtime = $date->{'rfc2822'};
4191
4192        my (undef, undef, $datetime_class) =
4193                gitweb_get_feature('javascript-timezone');
4194        if ($datetime_class) {
4195                $strtime = qq!<span class="$datetime_class">$strtime</span>!;
4196        }
4197
4198        my $localtime_format = '(%02d:%02d %s)';
4199        if ($date->{'hour_local'} < 6) {
4200                $localtime_format = '(<span class="atnight">%02d:%02d</span> %s)';
4201        }
4202        $strtime .= ' ' .
4203                    sprintf($localtime_format,
4204                            $date->{'hour_local'}, $date->{'minute_local'}, $date->{'tz_local'});
4205
4206        return $strtime;
4207}
4208
4209# Outputs the author name and date in long form
4210sub git_print_authorship {
4211        my $co = shift;
4212        my %opts = @_;
4213        my $tag = $opts{-tag} || 'div';
4214        my $author = $co->{'author_name'};
4215
4216        my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
4217        print "<$tag class=\"author_date\">" .
4218              format_search_author($author, "author", esc_html($author)) .
4219              " [".format_timestamp_html(\%ad)."]".
4220              git_get_avatar($co->{'author_email'}, -pad_before => 1) .
4221              "</$tag>\n";
4222}
4223
4224# Outputs table rows containing the full author or committer information,
4225# in the format expected for 'commit' view (& similar).
4226# Parameters are a commit hash reference, followed by the list of people
4227# to output information for. If the list is empty it defaults to both
4228# author and committer.
4229sub git_print_authorship_rows {
4230        my $co = shift;
4231        # too bad we can't use @people = @_ || ('author', 'committer')
4232        my @people = @_;
4233        @people = ('author', 'committer') unless @people;
4234        foreach my $who (@people) {
4235                my %wd = parse_date($co->{"${who}_epoch"}, $co->{"${who}_tz"});
4236                print "<tr><td>$who</td><td>" .
4237                      format_search_author($co->{"${who}_name"}, $who,
4238                                           esc_html($co->{"${who}_name"})) . " " .
4239                      format_search_author($co->{"${who}_email"}, $who,
4240                                           esc_html("<" . $co->{"${who}_email"} . ">")) .
4241                      "</td><td rowspan=\"2\">" .
4242                      git_get_avatar($co->{"${who}_email"}, -size => 'double') .
4243                      "</td></tr>\n" .
4244                      "<tr>" .
4245                      "<td></td><td>" .
4246                      format_timestamp_html(\%wd) .
4247                      "</td>" .
4248                      "</tr>\n";
4249        }
4250}
4251
4252sub git_print_page_path {
4253        my $name = shift;
4254        my $type = shift;
4255        my $hb = shift;
4256
4257
4258        print "<div class=\"page_path\">";
4259        print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
4260                      -title => 'tree root'}, to_utf8("[$project]"));
4261        print " / ";
4262        if (defined $name) {
4263                my @dirname = split '/', $name;
4264                my $basename = pop @dirname;
4265                my $fullname = '';
4266
4267                foreach my $dir (@dirname) {
4268                        $fullname .= ($fullname ? '/' : '') . $dir;
4269                        print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
4270                                                     hash_base=>$hb),
4271                                      -title => $fullname}, esc_path($dir));
4272                        print " / ";
4273                }
4274                if (defined $type && $type eq 'blob') {
4275                        print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
4276                                                     hash_base=>$hb),
4277                                      -title => $name}, esc_path($basename));
4278                } elsif (defined $type && $type eq 'tree') {
4279                        print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
4280                                                     hash_base=>$hb),
4281                                      -title => $name}, esc_path($basename));
4282                        print " / ";
4283                } else {
4284                        print esc_path($basename);
4285                }
4286        }
4287        print "<br/></div>\n";
4288}
4289
4290sub git_print_log {
4291        my $log = shift;
4292        my %opts = @_;
4293
4294        if ($opts{'-remove_title'}) {
4295                # remove title, i.e. first line of log
4296                shift @$log;
4297        }
4298        # remove leading empty lines
4299        while (defined $log->[0] && $log->[0] eq "") {
4300                shift @$log;
4301        }
4302
4303        # print log
4304        my $signoff = 0;
4305        my $empty = 0;
4306        foreach my $line (@$log) {
4307                if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
4308                        $signoff = 1;
4309                        $empty = 0;
4310                        if (! $opts{'-remove_signoff'}) {
4311                                print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
4312                                next;
4313                        } else {
4314                                # remove signoff lines
4315                                next;
4316                        }
4317                } else {
4318                        $signoff = 0;
4319                }
4320
4321                # print only one empty line
4322                # do not print empty line after signoff
4323                if ($line eq "") {
4324                        next if ($empty || $signoff);
4325                        $empty = 1;
4326                } else {
4327                        $empty = 0;
4328                }
4329
4330                print format_log_line_html($line) . "<br/>\n";
4331        }
4332
4333        if ($opts{'-final_empty_line'}) {
4334                # end with single empty line
4335                print "<br/>\n" unless $empty;
4336        }
4337}
4338
4339# return link target (what link points to)
4340sub git_get_link_target {
4341        my $hash = shift;
4342        my $link_target;
4343
4344        # read link
4345        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
4346                or return;
4347        {
4348                local $/ = undef;
4349                $link_target = <$fd>;
4350        }
4351        close $fd
4352                or return;
4353
4354        return $link_target;
4355}
4356
4357# given link target, and the directory (basedir) the link is in,
4358# return target of link relative to top directory (top tree);
4359# return undef if it is not possible (including absolute links).
4360sub normalize_link_target {
4361        my ($link_target, $basedir) = @_;
4362
4363        # absolute symlinks (beginning with '/') cannot be normalized
4364        return if (substr($link_target, 0, 1) eq '/');
4365
4366        # normalize link target to path from top (root) tree (dir)
4367        my $path;
4368        if ($basedir) {
4369                $path = $basedir . '/' . $link_target;
4370        } else {
4371                # we are in top (root) tree (dir)
4372                $path = $link_target;
4373        }
4374
4375        # remove //, /./, and /../
4376        my @path_parts;
4377        foreach my $part (split('/', $path)) {
4378                # discard '.' and ''
4379                next if (!$part || $part eq '.');
4380                # handle '..'
4381                if ($part eq '..') {
4382                        if (@path_parts) {
4383                                pop @path_parts;
4384                        } else {
4385                                # link leads outside repository (outside top dir)
4386                                return;
4387                        }
4388                } else {
4389                        push @path_parts, $part;
4390                }
4391        }
4392        $path = join('/', @path_parts);
4393
4394        return $path;
4395}
4396
4397# print tree entry (row of git_tree), but without encompassing <tr> element
4398sub git_print_tree_entry {
4399        my ($t, $basedir, $hash_base, $have_blame) = @_;
4400
4401        my %base_key = ();
4402        $base_key{'hash_base'} = $hash_base if defined $hash_base;
4403
4404        # The format of a table row is: mode list link.  Where mode is
4405        # the mode of the entry, list is the name of the entry, an href,
4406        # and link is the action links of the entry.
4407
4408        print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
4409        if (exists $t->{'size'}) {
4410                print "<td class=\"size\">$t->{'size'}</td>\n";
4411        }
4412        if ($t->{'type'} eq "blob") {
4413                print "<td class=\"list\">" .
4414                        $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
4415                                               file_name=>"$basedir$t->{'name'}", %base_key),
4416                                -class => "list"}, esc_path($t->{'name'}));
4417                if (S_ISLNK(oct $t->{'mode'})) {
4418                        my $link_target = git_get_link_target($t->{'hash'});
4419                        if ($link_target) {
4420                                my $norm_target = normalize_link_target($link_target, $basedir);
4421                                if (defined $norm_target) {
4422                                        print " -> " .
4423                                              $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
4424                                                                     file_name=>$norm_target),
4425                                                       -title => $norm_target}, esc_path($link_target));
4426                                } else {
4427                                        print " -> " . esc_path($link_target);
4428                                }
4429                        }
4430                }
4431                print "</td>\n";
4432                print "<td class=\"link\">";
4433                print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
4434                                             file_name=>"$basedir$t->{'name'}", %base_key)},
4435                              "blob");
4436                if ($have_blame) {
4437                        print " | " .
4438                              $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
4439                                                     file_name=>"$basedir$t->{'name'}", %base_key)},
4440                                      "blame");
4441                }
4442                if (defined $hash_base) {
4443                        print " | " .
4444                              $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
4445                                                     hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
4446                                      "history");
4447                }
4448                print " | " .
4449                        $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
4450                                               file_name=>"$basedir$t->{'name'}")},
4451                                "raw");
4452                print "</td>\n";
4453
4454        } elsif ($t->{'type'} eq "tree") {
4455                print "<td class=\"list\">";
4456                print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
4457                                             file_name=>"$basedir$t->{'name'}",
4458                                             %base_key)},
4459                              esc_path($t->{'name'}));
4460                print "</td>\n";
4461                print "<td class=\"link\">";
4462                print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
4463                                             file_name=>"$basedir$t->{'name'}",
4464                                             %base_key)},
4465                              "tree");
4466                if (defined $hash_base) {
4467                        print " | " .
4468                              $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
4469                                                     file_name=>"$basedir$t->{'name'}")},
4470                                      "history");
4471                }
4472                print "</td>\n";
4473        } else {
4474                # unknown object: we can only present history for it
4475                # (this includes 'commit' object, i.e. submodule support)
4476                print "<td class=\"list\">" .
4477                      esc_path($t->{'name'}) .
4478                      "</td>\n";
4479                print "<td class=\"link\">";
4480                if (defined $hash_base) {
4481                        print $cgi->a({-href => href(action=>"history",
4482                                                     hash_base=>$hash_base,
4483                                                     file_name=>"$basedir$t->{'name'}")},
4484                                      "history");
4485                }
4486                print "</td>\n";
4487        }
4488}
4489
4490## ......................................................................
4491## functions printing large fragments of HTML
4492
4493# get pre-image filenames for merge (combined) diff
4494sub fill_from_file_info {
4495        my ($diff, @parents) = @_;
4496
4497        $diff->{'from_file'} = [ ];
4498        $diff->{'from_file'}[$diff->{'nparents'} - 1] = undef;
4499        for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
4500                if ($diff->{'status'}[$i] eq 'R' ||
4501                    $diff->{'status'}[$i] eq 'C') {
4502                        $diff->{'from_file'}[$i] =
4503                                git_get_path_by_hash($parents[$i], $diff->{'from_id'}[$i]);
4504                }
4505        }
4506
4507        return $diff;
4508}
4509
4510# is current raw difftree line of file deletion
4511sub is_deleted {
4512        my $diffinfo = shift;
4513
4514        return $diffinfo->{'to_id'} eq ('0' x 40);
4515}
4516
4517# does patch correspond to [previous] difftree raw line
4518# $diffinfo  - hashref of parsed raw diff format
4519# $patchinfo - hashref of parsed patch diff format
4520#              (the same keys as in $diffinfo)
4521sub is_patch_split {
4522        my ($diffinfo, $patchinfo) = @_;
4523
4524        return defined $diffinfo && defined $patchinfo
4525                && $diffinfo->{'to_file'} eq $patchinfo->{'to_file'};
4526}
4527
4528
4529sub git_difftree_body {
4530        my ($difftree, $hash, @parents) = @_;
4531        my ($parent) = $parents[0];
4532        my $have_blame = gitweb_check_feature('blame');
4533        print "<div class=\"list_head\">\n";
4534        if ($#{$difftree} > 10) {
4535                print(($#{$difftree} + 1) . " files changed:\n");
4536        }
4537        print "</div>\n";
4538
4539        print "<table class=\"" .
4540              (@parents > 1 ? "combined " : "") .
4541              "diff_tree\">\n";
4542
4543        # header only for combined diff in 'commitdiff' view
4544        my $has_header = @$difftree && @parents > 1 && $action eq 'commitdiff';
4545        if ($has_header) {
4546                # table header
4547                print "<thead><tr>\n" .
4548                       "<th></th><th></th>\n"; # filename, patchN link
4549                for (my $i = 0; $i < @parents; $i++) {
4550                        my $par = $parents[$i];
4551                        print "<th>" .
4552                              $cgi->a({-href => href(action=>"commitdiff",
4553                                                     hash=>$hash, hash_parent=>$par),
4554                                       -title => 'commitdiff to parent number ' .
4555                                                  ($i+1) . ': ' . substr($par,0,7)},
4556                                      $i+1) .
4557                              "&nbsp;</th>\n";
4558                }
4559                print "</tr></thead>\n<tbody>\n";
4560        }
4561
4562        my $alternate = 1;
4563        my $patchno = 0;
4564        foreach my $line (@{$difftree}) {
4565                my $diff = parsed_difftree_line($line);
4566
4567                if ($alternate) {
4568                        print "<tr class=\"dark\">\n";
4569                } else {
4570                        print "<tr class=\"light\">\n";
4571                }
4572                $alternate ^= 1;
4573
4574                if (exists $diff->{'nparents'}) { # combined diff
4575
4576                        fill_from_file_info($diff, @parents)
4577                                unless exists $diff->{'from_file'};
4578
4579                        if (!is_deleted($diff)) {
4580                                # file exists in the result (child) commit
4581                                print "<td>" .
4582                                      $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
4583                                                             file_name=>$diff->{'to_file'},
4584                                                             hash_base=>$hash),
4585                                              -class => "list"}, esc_path($diff->{'to_file'})) .
4586                                      "</td>\n";
4587                        } else {
4588                                print "<td>" .
4589                                      esc_path($diff->{'to_file'}) .
4590                                      "</td>\n";
4591                        }
4592
4593                        if ($action eq 'commitdiff') {
4594                                # link to patch
4595                                $patchno++;
4596                                print "<td class=\"link\">" .
4597                                      $cgi->a({-href => href(-anchor=>"patch$patchno")},
4598                                              "patch") .
4599                                      " | " .
4600                                      "</td>\n";
4601                        }
4602
4603                        my $has_history = 0;
4604                        my $not_deleted = 0;
4605                        for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
4606                                my $hash_parent = $parents[$i];
4607                                my $from_hash = $diff->{'from_id'}[$i];
4608                                my $from_path = $diff->{'from_file'}[$i];
4609                                my $status = $diff->{'status'}[$i];
4610
4611                                $has_history ||= ($status ne 'A');
4612                                $not_deleted ||= ($status ne 'D');
4613
4614                                if ($status eq 'A') {
4615                                        print "<td  class=\"link\" align=\"right\"> | </td>\n";
4616                                } elsif ($status eq 'D') {
4617                                        print "<td class=\"link\">" .
4618                                              $cgi->a({-href => href(action=>"blob",
4619                                                                     hash_base=>$hash,
4620                                                                     hash=>$from_hash,
4621                                                                     file_name=>$from_path)},
4622                                                      "blob" . ($i+1)) .
4623                                              " | </td>\n";
4624                                } else {
4625                                        if ($diff->{'to_id'} eq $from_hash) {
4626                                                print "<td class=\"link nochange\">";
4627                                        } else {
4628                                                print "<td class=\"link\">";
4629                                        }
4630                                        print $cgi->a({-href => href(action=>"blobdiff",
4631                                                                     hash=>$diff->{'to_id'},
4632                                                                     hash_parent=>$from_hash,
4633                                                                     hash_base=>$hash,
4634                                                                     hash_parent_base=>$hash_parent,
4635                                                                     file_name=>$diff->{'to_file'},
4636                                                                     file_parent=>$from_path)},
4637                                                      "diff" . ($i+1)) .
4638                                              " | </td>\n";
4639                                }
4640                        }
4641
4642                        print "<td class=\"link\">";
4643                        if ($not_deleted) {
4644                                print $cgi->a({-href => href(action=>"blob",
4645                                                             hash=>$diff->{'to_id'},
4646                                                             file_name=>$diff->{'to_file'},
4647                                                             hash_base=>$hash)},
4648                                              "blob");
4649                                print " | " if ($has_history);
4650                        }
4651                        if ($has_history) {
4652                                print $cgi->a({-href => href(action=>"history",
4653                                                             file_name=>$diff->{'to_file'},
4654                                                             hash_base=>$hash)},
4655                                              "history");
4656                        }
4657                        print "</td>\n";
4658
4659                        print "</tr>\n";
4660                        next; # instead of 'else' clause, to avoid extra indent
4661                }
4662                # else ordinary diff
4663
4664                my ($to_mode_oct, $to_mode_str, $to_file_type);
4665                my ($from_mode_oct, $from_mode_str, $from_file_type);
4666                if ($diff->{'to_mode'} ne ('0' x 6)) {
4667                        $to_mode_oct = oct $diff->{'to_mode'};
4668                        if (S_ISREG($to_mode_oct)) { # only for regular file
4669                                $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
4670                        }
4671                        $to_file_type = file_type($diff->{'to_mode'});
4672                }
4673                if ($diff->{'from_mode'} ne ('0' x 6)) {
4674                        $from_mode_oct = oct $diff->{'from_mode'};
4675                        if (S_ISREG($from_mode_oct)) { # only for regular file
4676                                $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
4677                        }
4678                        $from_file_type = file_type($diff->{'from_mode'});
4679                }
4680
4681                if ($diff->{'status'} eq "A") { # created
4682                        my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
4683                        $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
4684                        $mode_chng   .= "]</span>";
4685                        print "<td>";
4686                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
4687                                                     hash_base=>$hash, file_name=>$diff->{'file'}),
4688                                      -class => "list"}, esc_path($diff->{'file'}));
4689                        print "</td>\n";
4690                        print "<td>$mode_chng</td>\n";
4691                        print "<td class=\"link\">";
4692                        if ($action eq 'commitdiff') {
4693                                # link to patch
4694                                $patchno++;
4695                                print $cgi->a({-href => href(-anchor=>"patch$patchno")},
4696                                              "patch") .
4697                                      " | ";
4698                        }
4699                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
4700                                                     hash_base=>$hash, file_name=>$diff->{'file'})},
4701                                      "blob");
4702                        print "</td>\n";
4703
4704                } elsif ($diff->{'status'} eq "D") { # deleted
4705                        my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
4706                        print "<td>";
4707                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
4708                                                     hash_base=>$parent, file_name=>$diff->{'file'}),
4709                                       -class => "list"}, esc_path($diff->{'file'}));
4710                        print "</td>\n";
4711                        print "<td>$mode_chng</td>\n";
4712                        print "<td class=\"link\">";
4713                        if ($action eq 'commitdiff') {
4714                                # link to patch
4715                                $patchno++;
4716                                print $cgi->a({-href => href(-anchor=>"patch$patchno")},
4717                                              "patch") .
4718                                      " | ";
4719                        }
4720                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
4721                                                     hash_base=>$parent, file_name=>$diff->{'file'})},
4722                                      "blob") . " | ";
4723                        if ($have_blame) {
4724                                print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
4725                                                             file_name=>$diff->{'file'})},
4726                                              "blame") . " | ";
4727                        }
4728                        print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
4729                                                     file_name=>$diff->{'file'})},
4730                                      "history");
4731                        print "</td>\n";
4732
4733                } elsif ($diff->{'status'} eq "M" || $diff->{'status'} eq "T") { # modified, or type changed
4734                        my $mode_chnge = "";
4735                        if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
4736                                $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
4737                                if ($from_file_type ne $to_file_type) {
4738                                        $mode_chnge .= " from $from_file_type to $to_file_type";
4739                                }
4740                                if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
4741                                        if ($from_mode_str && $to_mode_str) {
4742                                                $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
4743                                        } elsif ($to_mode_str) {
4744                                                $mode_chnge .= " mode: $to_mode_str";
4745                                        }
4746                                }
4747                                $mode_chnge .= "]</span>\n";
4748                        }
4749                        print "<td>";
4750                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
4751                                                     hash_base=>$hash, file_name=>$diff->{'file'}),
4752                                      -class => "list"}, esc_path($diff->{'file'}));
4753                        print "</td>\n";
4754                        print "<td>$mode_chnge</td>\n";
4755                        print "<td class=\"link\">";
4756                        if ($action eq 'commitdiff') {
4757                                # link to patch
4758                                $patchno++;
4759                                print $cgi->a({-href => href(-anchor=>"patch$patchno")},
4760                                              "patch") .
4761                                      " | ";
4762                        } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
4763                                # "commit" view and modified file (not onlu mode changed)
4764                                print $cgi->a({-href => href(action=>"blobdiff",
4765                                                             hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
4766                                                             hash_base=>$hash, hash_parent_base=>$parent,
4767                                                             file_name=>$diff->{'file'})},
4768                                              "diff") .
4769                                      " | ";
4770                        }
4771                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
4772                                                     hash_base=>$hash, file_name=>$diff->{'file'})},
4773                                       "blob") . " | ";
4774                        if ($have_blame) {
4775                                print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
4776                                                             file_name=>$diff->{'file'})},
4777                                              "blame") . " | ";
4778                        }
4779                        print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
4780                                                     file_name=>$diff->{'file'})},
4781                                      "history");
4782                        print "</td>\n";
4783
4784                } elsif ($diff->{'status'} eq "R" || $diff->{'status'} eq "C") { # renamed or copied
4785                        my %status_name = ('R' => 'moved', 'C' => 'copied');
4786                        my $nstatus = $status_name{$diff->{'status'}};
4787                        my $mode_chng = "";
4788                        if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
4789                                # mode also for directories, so we cannot use $to_mode_str
4790                                $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
4791                        }
4792                        print "<td>" .
4793                              $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
4794                                                     hash=>$diff->{'to_id'}, file_name=>$diff->{'to_file'}),
4795                                      -class => "list"}, esc_path($diff->{'to_file'})) . "</td>\n" .
4796                              "<td><span class=\"file_status $nstatus\">[$nstatus from " .
4797                              $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
4798                                                     hash=>$diff->{'from_id'}, file_name=>$diff->{'from_file'}),
4799                                      -class => "list"}, esc_path($diff->{'from_file'})) .
4800                              " with " . (int $diff->{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
4801                              "<td class=\"link\">";
4802                        if ($action eq 'commitdiff') {
4803                                # link to patch
4804                                $patchno++;
4805                                print $cgi->a({-href => href(-anchor=>"patch$patchno")},
4806                                              "patch") .
4807                                      " | ";
4808                        } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
4809                                # "commit" view and modified file (not only pure rename or copy)
4810                                print $cgi->a({-href => href(action=>"blobdiff",
4811                                                             hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
4812                                                             hash_base=>$hash, hash_parent_base=>$parent,
4813                                                             file_name=>$diff->{'to_file'}, file_parent=>$diff->{'from_file'})},
4814                                              "diff") .
4815                                      " | ";
4816                        }
4817                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
4818                                                     hash_base=>$parent, file_name=>$diff->{'to_file'})},
4819                                      "blob") . " | ";
4820                        if ($have_blame) {
4821                                print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
4822                                                             file_name=>$diff->{'to_file'})},
4823                                              "blame") . " | ";
4824                        }
4825                        print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
4826                                                    file_name=>$diff->{'to_file'})},
4827                                      "history");
4828                        print "</td>\n";
4829
4830                } # we should not encounter Unmerged (U) or Unknown (X) status
4831                print "</tr>\n";
4832        }
4833        print "</tbody>" if $has_header;
4834        print "</table>\n";
4835}
4836
4837sub git_patchset_body {
4838        my ($fd, $difftree, $hash, @hash_parents) = @_;
4839        my ($hash_parent) = $hash_parents[0];
4840
4841        my $is_combined = (@hash_parents > 1);
4842        my $patch_idx = 0;
4843        my $patch_number = 0;
4844        my $patch_line;
4845        my $diffinfo;
4846        my $to_name;
4847        my (%from, %to);
4848
4849        print "<div class=\"patchset\">\n";
4850
4851        # skip to first patch
4852        while ($patch_line = <$fd>) {
4853                chomp $patch_line;
4854
4855                last if ($patch_line =~ m/^diff /);
4856        }
4857
4858 PATCH:
4859        while ($patch_line) {
4860
4861                # parse "git diff" header line
4862                if ($patch_line =~ m/^diff --git (\"(?:[^\\\"]*(?:\\.[^\\\"]*)*)\"|[^ "]*) (.*)$/) {
4863                        # $1 is from_name, which we do not use
4864                        $to_name = unquote($2);
4865                        $to_name =~ s!^b/!!;
4866                } elsif ($patch_line =~ m/^diff --(cc|combined) ("?.*"?)$/) {
4867                        # $1 is 'cc' or 'combined', which we do not use
4868                        $to_name = unquote($2);
4869                } else {
4870                        $to_name = undef;
4871                }
4872
4873                # check if current patch belong to current raw line
4874                # and parse raw git-diff line if needed
4875                if (is_patch_split($diffinfo, { 'to_file' => $to_name })) {
4876                        # this is continuation of a split patch
4877                        print "<div class=\"patch cont\">\n";
4878                } else {
4879                        # advance raw git-diff output if needed
4880                        $patch_idx++ if defined $diffinfo;
4881
4882                        # read and prepare patch information
4883                        $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
4884
4885                        # compact combined diff output can have some patches skipped
4886                        # find which patch (using pathname of result) we are at now;
4887                        if ($is_combined) {
4888                                while ($to_name ne $diffinfo->{'to_file'}) {
4889                                        print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
4890                                              format_diff_cc_simplified($diffinfo, @hash_parents) .
4891                                              "</div>\n";  # class="patch"
4892
4893                                        $patch_idx++;
4894                                        $patch_number++;
4895
4896                                        last if $patch_idx > $#$difftree;
4897                                        $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
4898                                }
4899                        }
4900
4901                        # modifies %from, %to hashes
4902                        parse_from_to_diffinfo($diffinfo, \%from, \%to, @hash_parents);
4903
4904                        # this is first patch for raw difftree line with $patch_idx index
4905                        # we index @$difftree array from 0, but number patches from 1
4906                        print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
4907                }
4908
4909                # git diff header
4910                #assert($patch_line =~ m/^diff /) if DEBUG;
4911                #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
4912                $patch_number++;
4913                # print "git diff" header
4914                print format_git_diff_header_line($patch_line, $diffinfo,
4915                                                  \%from, \%to);
4916
4917                # print extended diff header
4918                print "<div class=\"diff extended_header\">\n";
4919        EXTENDED_HEADER:
4920                while ($patch_line = <$fd>) {
4921                        chomp $patch_line;
4922
4923                        last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
4924
4925                        print format_extended_diff_header_line($patch_line, $diffinfo,
4926                                                               \%from, \%to);
4927                }
4928                print "</div>\n"; # class="diff extended_header"
4929
4930                # from-file/to-file diff header
4931                if (! $patch_line) {
4932                        print "</div>\n"; # class="patch"
4933                        last PATCH;
4934                }
4935                next PATCH if ($patch_line =~ m/^diff /);
4936                #assert($patch_line =~ m/^---/) if DEBUG;
4937
4938                my $last_patch_line = $patch_line;
4939                $patch_line = <$fd>;
4940                chomp $patch_line;
4941                #assert($patch_line =~ m/^\+\+\+/) if DEBUG;
4942
4943                print format_diff_from_to_header($last_patch_line, $patch_line,
4944                                                 $diffinfo, \%from, \%to,
4945                                                 @hash_parents);
4946
4947                # the patch itself
4948        LINE:
4949                while ($patch_line = <$fd>) {
4950                        chomp $patch_line;
4951
4952                        next PATCH if ($patch_line =~ m/^diff /);
4953
4954                        print format_diff_line($patch_line, \%from, \%to);
4955                }
4956
4957        } continue {
4958                print "</div>\n"; # class="patch"
4959        }
4960
4961        # for compact combined (--cc) format, with chunk and patch simplification
4962        # the patchset might be empty, but there might be unprocessed raw lines
4963        for (++$patch_idx if $patch_number > 0;
4964             $patch_idx < @$difftree;
4965             ++$patch_idx) {
4966                # read and prepare patch information
4967                $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
4968
4969                # generate anchor for "patch" links in difftree / whatchanged part
4970                print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
4971                      format_diff_cc_simplified($diffinfo, @hash_parents) .
4972                      "</div>\n";  # class="patch"
4973
4974                $patch_number++;
4975        }
4976
4977        if ($patch_number == 0) {
4978                if (@hash_parents > 1) {
4979                        print "<div class=\"diff nodifferences\">Trivial merge</div>\n";
4980                } else {
4981                        print "<div class=\"diff nodifferences\">No differences found</div>\n";
4982                }
4983        }
4984
4985        print "</div>\n"; # class="patchset"
4986}
4987
4988# . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4989
4990# fills project list info (age, description, owner, category, forks)
4991# for each project in the list, removing invalid projects from
4992# returned list
4993# NOTE: modifies $projlist, but does not remove entries from it
4994sub fill_project_list_info {
4995        my $projlist = shift;
4996        my @projects;
4997
4998        my $show_ctags = gitweb_check_feature('ctags');
4999 PROJECT:
5000        foreach my $pr (@$projlist) {
5001                my (@activity) = git_get_last_activity($pr->{'path'});
5002                unless (@activity) {
5003                        next PROJECT;
5004                }
5005                ($pr->{'age'}, $pr->{'age_string'}) = @activity;
5006                if (!defined $pr->{'descr'}) {
5007                        my $descr = git_get_project_description($pr->{'path'}) || "";
5008                        $descr = to_utf8($descr);
5009                        $pr->{'descr_long'} = $descr;
5010                        $pr->{'descr'} = chop_str($descr, $projects_list_description_width, 5);
5011                }
5012                if (!defined $pr->{'owner'}) {
5013                        $pr->{'owner'} = git_get_project_owner("$pr->{'path'}") || "";
5014                }
5015                if ($show_ctags) {
5016                        $pr->{'ctags'} = git_get_project_ctags($pr->{'path'});
5017                }
5018                if ($projects_list_group_categories && !defined $pr->{'category'}) {
5019                        my $cat = git_get_project_category($pr->{'path'}) ||
5020                                                           $project_list_default_category;
5021                        $pr->{'category'} = to_utf8($cat);
5022                }
5023
5024                push @projects, $pr;
5025        }
5026
5027        return @projects;
5028}
5029
5030sub sort_projects_list {
5031        my ($projlist, $order) = @_;
5032        my @projects;
5033
5034        my %order_info = (
5035                project => { key => 'path', type => 'str' },
5036                descr => { key => 'descr_long', type => 'str' },
5037                owner => { key => 'owner', type => 'str' },
5038                age => { key => 'age', type => 'num' }
5039        );
5040        my $oi = $order_info{$order};
5041        return @$projlist unless defined $oi;
5042        if ($oi->{'type'} eq 'str') {
5043                @projects = sort {$a->{$oi->{'key'}} cmp $b->{$oi->{'key'}}} @$projlist;
5044        } else {
5045                @projects = sort {$a->{$oi->{'key'}} <=> $b->{$oi->{'key'}}} @$projlist;
5046        }
5047
5048        return @projects;
5049}
5050
5051# returns a hash of categories, containing the list of project
5052# belonging to each category
5053sub build_projlist_by_category {
5054        my ($projlist, $from, $to) = @_;
5055        my %categories;
5056
5057        $from = 0 unless defined $from;
5058        $to = $#$projlist if (!defined $to || $#$projlist < $to);
5059
5060        for (my $i = $from; $i <= $to; $i++) {
5061                my $pr = $projlist->[$i];
5062                push @{$categories{ $pr->{'category'} }}, $pr;
5063        }
5064
5065        return wantarray ? %categories : \%categories;
5066}
5067
5068# print 'sort by' <th> element, generating 'sort by $name' replay link
5069# if that order is not selected
5070sub print_sort_th {
5071        print format_sort_th(@_);
5072}
5073
5074sub format_sort_th {
5075        my ($name, $order, $header) = @_;
5076        my $sort_th = "";
5077        $header ||= ucfirst($name);
5078
5079        if ($order eq $name) {
5080                $sort_th .= "<th>$header</th>\n";
5081        } else {
5082                $sort_th .= "<th>" .
5083                            $cgi->a({-href => href(-replay=>1, order=>$name),
5084                                     -class => "header"}, $header) .
5085                            "</th>\n";
5086        }
5087
5088        return $sort_th;
5089}
5090
5091sub git_project_list_rows {
5092        my ($projlist, $from, $to, $check_forks) = @_;
5093
5094        $from = 0 unless defined $from;
5095        $to = $#$projlist if (!defined $to || $#$projlist < $to);
5096
5097        my $alternate = 1;
5098        for (my $i = $from; $i <= $to; $i++) {
5099                my $pr = $projlist->[$i];
5100
5101                if ($alternate) {
5102                        print "<tr class=\"dark\">\n";
5103                } else {
5104                        print "<tr class=\"light\">\n";
5105                }
5106                $alternate ^= 1;
5107
5108                if ($check_forks) {
5109                        print "<td>";
5110                        if ($pr->{'forks'}) {
5111                                my $nforks = scalar @{$pr->{'forks'}};
5112                                if ($nforks > 0) {
5113                                        print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks"),
5114                                                       -title => "$nforks forks"}, "+");
5115                                } else {
5116                                        print $cgi->span({-title => "$nforks forks"}, "+");
5117                                }
5118                        }
5119                        print "</td>\n";
5120                }
5121                print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
5122                                        -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
5123                      "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
5124                                        -class => "list", -title => $pr->{'descr_long'}},
5125                                        esc_html($pr->{'descr'})) . "</td>\n" .
5126                      "<td><i>" . chop_and_escape_str($pr->{'owner'}, 15) . "</i></td>\n";
5127                print "<td class=\"". age_class($pr->{'age'}) . "\">" .
5128                      (defined $pr->{'age_string'} ? $pr->{'age_string'} : "No commits") . "</td>\n" .
5129                      "<td class=\"link\">" .
5130                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
5131                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
5132                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
5133                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
5134                      ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
5135                      "</td>\n" .
5136                      "</tr>\n";
5137        }
5138}
5139
5140sub git_project_list_body {
5141        # actually uses global variable $project
5142        my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
5143        my @projects = @$projlist;
5144
5145        my $check_forks = gitweb_check_feature('forks');
5146        my $show_ctags  = gitweb_check_feature('ctags');
5147        my $tagfilter = $show_ctags ? $cgi->param('by_tag') : undef;
5148        $check_forks = undef
5149                if ($tagfilter || $searchtext);
5150
5151        # filtering out forks before filling info allows to do less work
5152        @projects = filter_forks_from_projects_list(\@projects)
5153                if ($check_forks);
5154        @projects = fill_project_list_info(\@projects);
5155        # searching projects require filling to be run before it
5156        @projects = search_projects_list(\@projects,
5157                                         'searchtext' => $searchtext,
5158                                         'tagfilter'  => $tagfilter)
5159                if ($tagfilter || $searchtext);
5160
5161        $order ||= $default_projects_order;
5162        $from = 0 unless defined $from;
5163        $to = $#projects if (!defined $to || $#projects < $to);
5164
5165        # short circuit
5166        if ($from > $to) {
5167                print "<center>\n".
5168                      "<b>No such projects found</b><br />\n".
5169                      "Click ".$cgi->a({-href=>href(project=>undef)},"here")." to view all projects<br />\n".
5170                      "</center>\n<br />\n";
5171                return;
5172        }
5173
5174        @projects = sort_projects_list(\@projects, $order);
5175
5176        if ($show_ctags) {
5177                my $ctags = git_gather_all_ctags(\@projects);
5178                my $cloud = git_populate_project_tagcloud($ctags);
5179                print git_show_project_tagcloud($cloud, 64);
5180        }
5181
5182        print "<table class=\"project_list\">\n";
5183        unless ($no_header) {
5184                print "<tr>\n";
5185                if ($check_forks) {
5186                        print "<th></th>\n";
5187                }
5188                print_sort_th('project', $order, 'Project');
5189                print_sort_th('descr', $order, 'Description');
5190                print_sort_th('owner', $order, 'Owner');
5191                print_sort_th('age', $order, 'Last Change');
5192                print "<th></th>\n" . # for links
5193                      "</tr>\n";
5194        }
5195
5196        if ($projects_list_group_categories) {
5197                # only display categories with projects in the $from-$to window
5198                @projects = sort {$a->{'category'} cmp $b->{'category'}} @projects[$from..$to];
5199                my %categories = build_projlist_by_category(\@projects, $from, $to);
5200                foreach my $cat (sort keys %categories) {
5201                        unless ($cat eq "") {
5202                                print "<tr>\n";
5203                                if ($check_forks) {
5204                                        print "<td></td>\n";
5205                                }
5206                                print "<td class=\"category\" colspan=\"5\">".esc_html($cat)."</td>\n";
5207                                print "</tr>\n";
5208                        }
5209
5210                        git_project_list_rows($categories{$cat}, undef, undef, $check_forks);
5211                }
5212        } else {
5213                git_project_list_rows(\@projects, $from, $to, $check_forks);
5214        }
5215
5216        if (defined $extra) {
5217                print "<tr>\n";
5218                if ($check_forks) {
5219                        print "<td></td>\n";
5220                }
5221                print "<td colspan=\"5\">$extra</td>\n" .
5222                      "</tr>\n";
5223        }
5224        print "</table>\n";
5225}
5226
5227sub git_log_body {
5228        # uses global variable $project
5229        my ($commitlist, $from, $to, $refs, $extra) = @_;
5230
5231        $from = 0 unless defined $from;
5232        $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
5233
5234        for (my $i = 0; $i <= $to; $i++) {
5235                my %co = %{$commitlist->[$i]};
5236                next if !%co;
5237                my $commit = $co{'id'};
5238                my $ref = format_ref_marker($refs, $commit);
5239                git_print_header_div('commit',
5240                               "<span class=\"age\">$co{'age_string'}</span>" .
5241                               esc_html($co{'title'}) . $ref,
5242                               $commit);
5243                print "<div class=\"title_text\">\n" .
5244                      "<div class=\"log_link\">\n" .
5245                      $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
5246                      " | " .
5247                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
5248                      " | " .
5249                      $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
5250                      "<br/>\n" .
5251                      "</div>\n";
5252                      git_print_authorship(\%co, -tag => 'span');
5253                      print "<br/>\n</div>\n";
5254
5255                print "<div class=\"log_body\">\n";
5256                git_print_log($co{'comment'}, -final_empty_line=> 1);
5257                print "</div>\n";
5258        }
5259        if ($extra) {
5260                print "<div class=\"page_nav\">\n";
5261                print "$extra\n";
5262                print "</div>\n";
5263        }
5264}
5265
5266sub git_shortlog_body {
5267        # uses global variable $project
5268        my ($commitlist, $from, $to, $refs, $extra) = @_;
5269
5270        $from = 0 unless defined $from;
5271        $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
5272
5273        print "<table class=\"shortlog\">\n";
5274        my $alternate = 1;
5275        for (my $i = $from; $i <= $to; $i++) {
5276                my %co = %{$commitlist->[$i]};
5277                my $commit = $co{'id'};
5278                my $ref = format_ref_marker($refs, $commit);
5279                if ($alternate) {
5280                        print "<tr class=\"dark\">\n";
5281                } else {
5282                        print "<tr class=\"light\">\n";
5283                }
5284                $alternate ^= 1;
5285                # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
5286                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
5287                      format_author_html('td', \%co, 10) . "<td>";
5288                print format_subject_html($co{'title'}, $co{'title_short'},
5289                                          href(action=>"commit", hash=>$commit), $ref);
5290                print "</td>\n" .
5291                      "<td class=\"link\">" .
5292                      $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
5293                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
5294                      $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
5295                my $snapshot_links = format_snapshot_links($commit);
5296                if (defined $snapshot_links) {
5297                        print " | " . $snapshot_links;
5298                }
5299                print "</td>\n" .
5300                      "</tr>\n";
5301        }
5302        if (defined $extra) {
5303                print "<tr>\n" .
5304                      "<td colspan=\"4\">$extra</td>\n" .
5305                      "</tr>\n";
5306        }
5307        print "</table>\n";
5308}
5309
5310sub git_history_body {
5311        # Warning: assumes constant type (blob or tree) during history
5312        my ($commitlist, $from, $to, $refs, $extra,
5313            $file_name, $file_hash, $ftype) = @_;
5314
5315        $from = 0 unless defined $from;
5316        $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
5317
5318        print "<table class=\"history\">\n";
5319        my $alternate = 1;
5320        for (my $i = $from; $i <= $to; $i++) {
5321                my %co = %{$commitlist->[$i]};
5322                if (!%co) {
5323                        next;
5324                }
5325                my $commit = $co{'id'};
5326
5327                my $ref = format_ref_marker($refs, $commit);
5328
5329                if ($alternate) {
5330                        print "<tr class=\"dark\">\n";
5331                } else {
5332                        print "<tr class=\"light\">\n";
5333                }
5334                $alternate ^= 1;
5335                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
5336        # shortlog:   format_author_html('td', \%co, 10)
5337                      format_author_html('td', \%co, 15, 3) . "<td>";
5338                # originally git_history used chop_str($co{'title'}, 50)
5339                print format_subject_html($co{'title'}, $co{'title_short'},
5340                                          href(action=>"commit", hash=>$commit), $ref);
5341                print "</td>\n" .
5342                      "<td class=\"link\">" .
5343                      $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
5344                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
5345
5346                if ($ftype eq 'blob') {
5347                        my $blob_current = $file_hash;
5348                        my $blob_parent  = git_get_hash_by_path($commit, $file_name);
5349                        if (defined $blob_current && defined $blob_parent &&
5350                                        $blob_current ne $blob_parent) {
5351                                print " | " .
5352                                        $cgi->a({-href => href(action=>"blobdiff",
5353                                                               hash=>$blob_current, hash_parent=>$blob_parent,
5354                                                               hash_base=>$hash_base, hash_parent_base=>$commit,
5355                                                               file_name=>$file_name)},
5356                                                "diff to current");
5357                        }
5358                }
5359                print "</td>\n" .
5360                      "</tr>\n";
5361        }
5362        if (defined $extra) {
5363                print "<tr>\n" .
5364                      "<td colspan=\"4\">$extra</td>\n" .
5365                      "</tr>\n";
5366        }
5367        print "</table>\n";
5368}
5369
5370sub git_tags_body {
5371        # uses global variable $project
5372        my ($taglist, $from, $to, $extra) = @_;
5373        $from = 0 unless defined $from;
5374        $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
5375
5376        print "<table class=\"tags\">\n";
5377        my $alternate = 1;
5378        for (my $i = $from; $i <= $to; $i++) {
5379                my $entry = $taglist->[$i];
5380                my %tag = %$entry;
5381                my $comment = $tag{'subject'};
5382                my $comment_short;
5383                if (defined $comment) {
5384                        $comment_short = chop_str($comment, 30, 5);
5385                }
5386                if ($alternate) {
5387                        print "<tr class=\"dark\">\n";
5388                } else {
5389                        print "<tr class=\"light\">\n";
5390                }
5391                $alternate ^= 1;
5392                if (defined $tag{'age'}) {
5393                        print "<td><i>$tag{'age'}</i></td>\n";
5394                } else {
5395                        print "<td></td>\n";
5396                }
5397                print "<td>" .
5398                      $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
5399                               -class => "list name"}, esc_html($tag{'name'})) .
5400                      "</td>\n" .
5401                      "<td>";
5402                if (defined $comment) {
5403                        print format_subject_html($comment, $comment_short,
5404                                                  href(action=>"tag", hash=>$tag{'id'}));
5405                }
5406                print "</td>\n" .
5407                      "<td class=\"selflink\">";
5408                if ($tag{'type'} eq "tag") {
5409                        print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
5410                } else {
5411                        print "&nbsp;";
5412                }
5413                print "</td>\n" .
5414                      "<td class=\"link\">" . " | " .
5415                      $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
5416                if ($tag{'reftype'} eq "commit") {
5417                        print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'fullname'})}, "shortlog") .
5418                              " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'fullname'})}, "log");
5419                } elsif ($tag{'reftype'} eq "blob") {
5420                        print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
5421                }
5422                print "</td>\n" .
5423                      "</tr>";
5424        }
5425        if (defined $extra) {
5426                print "<tr>\n" .
5427                      "<td colspan=\"5\">$extra</td>\n" .
5428                      "</tr>\n";
5429        }
5430        print "</table>\n";
5431}
5432
5433sub git_heads_body {
5434        # uses global variable $project
5435        my ($headlist, $head, $from, $to, $extra) = @_;
5436        $from = 0 unless defined $from;
5437        $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
5438
5439        print "<table class=\"heads\">\n";
5440        my $alternate = 1;
5441        for (my $i = $from; $i <= $to; $i++) {
5442                my $entry = $headlist->[$i];
5443                my %ref = %$entry;
5444                my $curr = $ref{'id'} eq $head;
5445                if ($alternate) {
5446                        print "<tr class=\"dark\">\n";
5447                } else {
5448                        print "<tr class=\"light\">\n";
5449                }
5450                $alternate ^= 1;
5451                print "<td><i>$ref{'age'}</i></td>\n" .
5452                      ($curr ? "<td class=\"current_head\">" : "<td>") .
5453                      $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'fullname'}),
5454                               -class => "list name"},esc_html($ref{'name'})) .
5455                      "</td>\n" .
5456                      "<td class=\"link\">" .
5457                      $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'fullname'})}, "shortlog") . " | " .
5458                      $cgi->a({-href => href(action=>"log", hash=>$ref{'fullname'})}, "log") . " | " .
5459                      $cgi->a({-href => href(action=>"tree", hash=>$ref{'fullname'}, hash_base=>$ref{'fullname'})}, "tree") .
5460                      "</td>\n" .
5461                      "</tr>";
5462        }
5463        if (defined $extra) {
5464                print "<tr>\n" .
5465                      "<td colspan=\"3\">$extra</td>\n" .
5466                      "</tr>\n";
5467        }
5468        print "</table>\n";
5469}
5470
5471# Display a single remote block
5472sub git_remote_block {
5473        my ($remote, $rdata, $limit, $head) = @_;
5474
5475        my $heads = $rdata->{'heads'};
5476        my $fetch = $rdata->{'fetch'};
5477        my $push = $rdata->{'push'};
5478
5479        my $urls_table = "<table class=\"projects_list\">\n" ;
5480
5481        if (defined $fetch) {
5482                if ($fetch eq $push) {
5483                        $urls_table .= format_repo_url("URL", $fetch);
5484                } else {
5485                        $urls_table .= format_repo_url("Fetch URL", $fetch);
5486                        $urls_table .= format_repo_url("Push URL", $push) if defined $push;
5487                }
5488        } elsif (defined $push) {
5489                $urls_table .= format_repo_url("Push URL", $push);
5490        } else {
5491                $urls_table .= format_repo_url("", "No remote URL");
5492        }
5493
5494        $urls_table .= "</table>\n";
5495
5496        my $dots;
5497        if (defined $limit && $limit < @$heads) {
5498                $dots = $cgi->a({-href => href(action=>"remotes", hash=>$remote)}, "...");
5499        }
5500
5501        print $urls_table;
5502        git_heads_body($heads, $head, 0, $limit, $dots);
5503}
5504
5505# Display a list of remote names with the respective fetch and push URLs
5506sub git_remotes_list {
5507        my ($remotedata, $limit) = @_;
5508        print "<table class=\"heads\">\n";
5509        my $alternate = 1;
5510        my @remotes = sort keys %$remotedata;
5511
5512        my $limited = $limit && $limit < @remotes;
5513
5514        $#remotes = $limit - 1 if $limited;
5515
5516        while (my $remote = shift @remotes) {
5517                my $rdata = $remotedata->{$remote};
5518                my $fetch = $rdata->{'fetch'};
5519                my $push = $rdata->{'push'};
5520                if ($alternate) {
5521                        print "<tr class=\"dark\">\n";
5522                } else {
5523                        print "<tr class=\"light\">\n";
5524                }
5525                $alternate ^= 1;
5526                print "<td>" .
5527                      $cgi->a({-href=> href(action=>'remotes', hash=>$remote),
5528                               -class=> "list name"},esc_html($remote)) .
5529                      "</td>";
5530                print "<td class=\"link\">" .
5531                      (defined $fetch ? $cgi->a({-href=> $fetch}, "fetch") : "fetch") .
5532                      " | " .
5533                      (defined $push ? $cgi->a({-href=> $push}, "push") : "push") .
5534                      "</td>";
5535
5536                print "</tr>\n";
5537        }
5538
5539        if ($limited) {
5540                print "<tr>\n" .
5541                      "<td colspan=\"3\">" .
5542                      $cgi->a({-href => href(action=>"remotes")}, "...") .
5543                      "</td>\n" . "</tr>\n";
5544        }
5545
5546        print "</table>";
5547}
5548
5549# Display remote heads grouped by remote, unless there are too many
5550# remotes, in which case we only display the remote names
5551sub git_remotes_body {
5552        my ($remotedata, $limit, $head) = @_;
5553        if ($limit and $limit < keys %$remotedata) {
5554                git_remotes_list($remotedata, $limit);
5555        } else {
5556                fill_remote_heads($remotedata);
5557                while (my ($remote, $rdata) = each %$remotedata) {
5558                        git_print_section({-class=>"remote", -id=>$remote},
5559                                ["remotes", $remote, $remote], sub {
5560                                        git_remote_block($remote, $rdata, $limit, $head);
5561                                });
5562                }
5563        }
5564}
5565
5566sub git_search_message {
5567        my %co = @_;
5568
5569        my $greptype;
5570        if ($searchtype eq 'commit') {
5571                $greptype = "--grep=";
5572        } elsif ($searchtype eq 'author') {
5573                $greptype = "--author=";
5574        } elsif ($searchtype eq 'committer') {
5575                $greptype = "--committer=";
5576        }
5577        $greptype .= $searchtext;
5578        my @commitlist = parse_commits($hash, 101, (100 * $page), undef,
5579                                       $greptype, '--regexp-ignore-case',
5580                                       $search_use_regexp ? '--extended-regexp' : '--fixed-strings');
5581
5582        my $paging_nav = '';
5583        if ($page > 0) {
5584                $paging_nav .=
5585                        $cgi->a({-href => href(-replay=>1, page=>undef)},
5586                                "first") .
5587                        " &sdot; " .
5588                        $cgi->a({-href => href(-replay=>1, page=>$page-1),
5589                                 -accesskey => "p", -title => "Alt-p"}, "prev");
5590        } else {
5591                $paging_nav .= "first &sdot; prev";
5592        }
5593        my $next_link = '';
5594        if ($#commitlist >= 100) {
5595                $next_link =
5596                        $cgi->a({-href => href(-replay=>1, page=>$page+1),
5597                                 -accesskey => "n", -title => "Alt-n"}, "next");
5598                $paging_nav .= " &sdot; $next_link";
5599        } else {
5600                $paging_nav .= " &sdot; next";
5601        }
5602
5603        git_header_html();
5604
5605        git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
5606        git_print_header_div('commit', esc_html($co{'title'}), $hash);
5607        if ($page == 0 && !@commitlist) {
5608                print "<p>No match.</p>\n";
5609        } else {
5610                git_search_grep_body(\@commitlist, 0, 99, $next_link);
5611        }
5612
5613        git_footer_html();
5614}
5615
5616sub git_search_changes {
5617        my %co = @_;
5618
5619        local $/ = "\n";
5620        open my $fd, '-|', git_cmd(), '--no-pager', 'log', @diff_opts,
5621                '--pretty=format:%H', '--no-abbrev', '--raw', "-S$searchtext",
5622                ($search_use_regexp ? '--pickaxe-regex' : ())
5623                        or die_error(500, "Open git-log failed");
5624
5625        git_header_html();
5626
5627        git_print_page_nav('','', $hash,$co{'tree'},$hash);
5628        git_print_header_div('commit', esc_html($co{'title'}), $hash);
5629
5630        print "<table class=\"pickaxe search\">\n";
5631        my $alternate = 1;
5632        undef %co;
5633        my @files;
5634        while (my $line = <$fd>) {
5635                chomp $line;
5636                next unless $line;
5637
5638                my %set = parse_difftree_raw_line($line);
5639                if (defined $set{'commit'}) {
5640                        # finish previous commit
5641                        if (%co) {
5642                                print "</td>\n" .
5643                                      "<td class=\"link\">" .
5644                                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})},
5645                                              "commit") .
5646                                      " | " .
5647                                      $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'},
5648                                                             hash_base=>$co{'id'})},
5649                                              "tree") .
5650                                      "</td>\n" .
5651                                      "</tr>\n";
5652                        }
5653
5654                        if ($alternate) {
5655                                print "<tr class=\"dark\">\n";
5656                        } else {
5657                                print "<tr class=\"light\">\n";
5658                        }
5659                        $alternate ^= 1;
5660                        %co = parse_commit($set{'commit'});
5661                        my $author = chop_and_escape_str($co{'author_name'}, 15, 5);
5662                        print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
5663                              "<td><i>$author</i></td>\n" .
5664                              "<td>" .
5665                              $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
5666                                      -class => "list subject"},
5667                                      chop_and_escape_str($co{'title'}, 50) . "<br/>");
5668                } elsif (defined $set{'to_id'}) {
5669                        next if ($set{'to_id'} =~ m/^0{40}$/);
5670
5671                        print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
5672                                                     hash=>$set{'to_id'}, file_name=>$set{'to_file'}),
5673                                      -class => "list"},
5674                                      "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
5675                              "<br/>\n";
5676                }
5677        }
5678        close $fd;
5679
5680        # finish last commit (warning: repetition!)
5681        if (%co) {
5682                print "</td>\n" .
5683                      "<td class=\"link\">" .
5684                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})},
5685                              "commit") .
5686                      " | " .
5687                      $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'},
5688                                             hash_base=>$co{'id'})},
5689                              "tree") .
5690                      "</td>\n" .
5691                      "</tr>\n";
5692        }
5693
5694        print "</table>\n";
5695
5696        git_footer_html();
5697}
5698
5699sub git_search_files {
5700        my %co = @_;
5701
5702        local $/ = "\n";
5703        open my $fd, "-|", git_cmd(), 'grep', '-n',
5704                $search_use_regexp ? ('-E', '-i') : '-F',
5705                $searchtext, $co{'tree'}
5706                        or die_error(500, "Open git-grep failed");
5707
5708        git_header_html();
5709
5710        git_print_page_nav('','', $hash,$co{'tree'},$hash);
5711        git_print_header_div('commit', esc_html($co{'title'}), $hash);
5712
5713        print "<table class=\"grep_search\">\n";
5714        my $alternate = 1;
5715        my $matches = 0;
5716        my $lastfile = '';
5717        while (my $line = <$fd>) {
5718                chomp $line;
5719                my ($file, $lno, $ltext, $binary);
5720                last if ($matches++ > 1000);
5721                if ($line =~ /^Binary file (.+) matches$/) {
5722                        $file = $1;
5723                        $binary = 1;
5724                } else {
5725                        (undef, $file, $lno, $ltext) = split(/:/, $line, 4);
5726                }
5727                if ($file ne $lastfile) {
5728                        $lastfile and print "</td></tr>\n";
5729                        if ($alternate++) {
5730                                print "<tr class=\"dark\">\n";
5731                        } else {
5732                                print "<tr class=\"light\">\n";
5733                        }
5734                        print "<td class=\"list\">".
5735                                $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
5736                                                       file_name=>"$file"),
5737                                        -class => "list"}, esc_path($file));
5738                        print "</td><td>\n";
5739                        $lastfile = $file;
5740                }
5741                if ($binary) {
5742                        print "<div class=\"binary\">Binary file</div>\n";
5743                } else {
5744                        $ltext = untabify($ltext);
5745                        if ($ltext =~ m/^(.*)($search_regexp)(.*)$/i) {
5746                                $ltext = esc_html($1, -nbsp=>1);
5747                                $ltext .= '<span class="match">';
5748                                $ltext .= esc_html($2, -nbsp=>1);
5749                                $ltext .= '</span>';
5750                                $ltext .= esc_html($3, -nbsp=>1);
5751                        } else {
5752                                $ltext = esc_html($ltext, -nbsp=>1);
5753                        }
5754                        print "<div class=\"pre\">" .
5755                                $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
5756                                                       file_name=>"$file").'#l'.$lno,
5757                                        -class => "linenr"}, sprintf('%4i', $lno))
5758                                . ' ' .  $ltext . "</div>\n";
5759                }
5760        }
5761        if ($lastfile) {
5762                print "</td></tr>\n";
5763                if ($matches > 1000) {
5764                        print "<div class=\"diff nodifferences\">Too many matches, listing trimmed</div>\n";
5765                }
5766        } else {
5767                print "<div class=\"diff nodifferences\">No matches found</div>\n";
5768        }
5769        close $fd;
5770
5771        print "</table>\n";
5772
5773        git_footer_html();
5774}
5775
5776sub git_search_grep_body {
5777        my ($commitlist, $from, $to, $extra) = @_;
5778        $from = 0 unless defined $from;
5779        $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
5780
5781        print "<table class=\"commit_search\">\n";
5782        my $alternate = 1;
5783        for (my $i = $from; $i <= $to; $i++) {
5784                my %co = %{$commitlist->[$i]};
5785                if (!%co) {
5786                        next;
5787                }
5788                my $commit = $co{'id'};
5789                if ($alternate) {
5790                        print "<tr class=\"dark\">\n";
5791                } else {
5792                        print "<tr class=\"light\">\n";
5793                }
5794                $alternate ^= 1;
5795                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
5796                      format_author_html('td', \%co, 15, 5) .
5797                      "<td>" .
5798                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
5799                               -class => "list subject"},
5800                              chop_and_escape_str($co{'title'}, 50) . "<br/>");
5801                my $comment = $co{'comment'};
5802                foreach my $line (@$comment) {
5803                        if ($line =~ m/^(.*?)($search_regexp)(.*)$/i) {
5804                                my ($lead, $match, $trail) = ($1, $2, $3);
5805                                $match = chop_str($match, 70, 5, 'center');
5806                                my $contextlen = int((80 - length($match))/2);
5807                                $contextlen = 30 if ($contextlen > 30);
5808                                $lead  = chop_str($lead,  $contextlen, 10, 'left');
5809                                $trail = chop_str($trail, $contextlen, 10, 'right');
5810
5811                                $lead  = esc_html($lead);
5812                                $match = esc_html($match);
5813                                $trail = esc_html($trail);
5814
5815                                print "$lead<span class=\"match\">$match</span>$trail<br />";
5816                        }
5817                }
5818                print "</td>\n" .
5819                      "<td class=\"link\">" .
5820                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
5821                      " | " .
5822                      $cgi->a({-href => href(action=>"commitdiff", hash=>$co{'id'})}, "commitdiff") .
5823                      " | " .
5824                      $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
5825                print "</td>\n" .
5826                      "</tr>\n";
5827        }
5828        if (defined $extra) {
5829                print "<tr>\n" .
5830                      "<td colspan=\"3\">$extra</td>\n" .
5831                      "</tr>\n";
5832        }
5833        print "</table>\n";
5834}
5835
5836## ======================================================================
5837## ======================================================================
5838## actions
5839
5840sub git_project_list {
5841        my $order = $input_params{'order'};
5842        if (defined $order && $order !~ m/none|project|descr|owner|age/) {
5843                die_error(400, "Unknown order parameter");
5844        }
5845
5846        my @list = git_get_projects_list();
5847        if (!@list) {
5848                die_error(404, "No projects found");
5849        }
5850
5851        git_header_html();
5852        if (defined $home_text && -f $home_text) {
5853                print "<div class=\"index_include\">\n";
5854                insert_file($home_text);
5855                print "</div>\n";
5856        }
5857        print $cgi->startform(-method => "get") .
5858              "<p class=\"projsearch\">Search:\n" .
5859              $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
5860              "</p>" .
5861              $cgi->end_form() . "\n";
5862        git_project_list_body(\@list, $order);
5863        git_footer_html();
5864}
5865
5866sub git_forks {
5867        my $order = $input_params{'order'};
5868        if (defined $order && $order !~ m/none|project|descr|owner|age/) {
5869                die_error(400, "Unknown order parameter");
5870        }
5871
5872        my @list = git_get_projects_list($project);
5873        if (!@list) {
5874                die_error(404, "No forks found");
5875        }
5876
5877        git_header_html();
5878        git_print_page_nav('','');
5879        git_print_header_div('summary', "$project forks");
5880        git_project_list_body(\@list, $order);
5881        git_footer_html();
5882}
5883
5884sub git_project_index {
5885        my @projects = git_get_projects_list();
5886        if (!@projects) {
5887                die_error(404, "No projects found");
5888        }
5889
5890        print $cgi->header(
5891                -type => 'text/plain',
5892                -charset => 'utf-8',
5893                -content_disposition => 'inline; filename="index.aux"');
5894
5895        foreach my $pr (@projects) {
5896                if (!exists $pr->{'owner'}) {
5897                        $pr->{'owner'} = git_get_project_owner("$pr->{'path'}");
5898                }
5899
5900                my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
5901                # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
5902                $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
5903                $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
5904                $path  =~ s/ /\+/g;
5905                $owner =~ s/ /\+/g;
5906
5907                print "$path $owner\n";
5908        }
5909}
5910
5911sub git_summary {
5912        my $descr = git_get_project_description($project) || "none";
5913        my %co = parse_commit("HEAD");
5914        my %cd = %co ? parse_date($co{'committer_epoch'}, $co{'committer_tz'}) : ();
5915        my $head = $co{'id'};
5916        my $remote_heads = gitweb_check_feature('remote_heads');
5917
5918        my $owner = git_get_project_owner($project);
5919
5920        my $refs = git_get_references();
5921        # These get_*_list functions return one more to allow us to see if
5922        # there are more ...
5923        my @taglist  = git_get_tags_list(16);
5924        my @headlist = git_get_heads_list(16);
5925        my %remotedata = $remote_heads ? git_get_remotes_list() : ();
5926        my @forklist;
5927        my $check_forks = gitweb_check_feature('forks');
5928
5929        if ($check_forks) {
5930                # find forks of a project
5931                @forklist = git_get_projects_list($project);
5932                # filter out forks of forks
5933                @forklist = filter_forks_from_projects_list(\@forklist)
5934                        if (@forklist);
5935        }
5936
5937        git_header_html();
5938        git_print_page_nav('summary','', $head);
5939
5940        print "<div class=\"title\">&nbsp;</div>\n";
5941        print "<table class=\"projects_list\">\n" .
5942              "<tr id=\"metadata_desc\"><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
5943              "<tr id=\"metadata_owner\"><td>owner</td><td>" . esc_html($owner) . "</td></tr>\n";
5944        if (defined $cd{'rfc2822'}) {
5945                print "<tr id=\"metadata_lchange\"><td>last change</td>" .
5946                      "<td>".format_timestamp_html(\%cd)."</td></tr>\n";
5947        }
5948
5949        # use per project git URL list in $projectroot/$project/cloneurl
5950        # or make project git URL from git base URL and project name
5951        my $url_tag = "URL";
5952        my @url_list = git_get_project_url_list($project);
5953        @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
5954        foreach my $git_url (@url_list) {
5955                next unless $git_url;
5956                print format_repo_url($url_tag, $git_url);
5957                $url_tag = "";
5958        }
5959
5960        # Tag cloud
5961        my $show_ctags = gitweb_check_feature('ctags');
5962        if ($show_ctags) {
5963                my $ctags = git_get_project_ctags($project);
5964                if (%$ctags) {
5965                        # without ability to add tags, don't show if there are none
5966                        my $cloud = git_populate_project_tagcloud($ctags);
5967                        print "<tr id=\"metadata_ctags\">" .
5968                              "<td>content tags</td>" .
5969                              "<td>".git_show_project_tagcloud($cloud, 48)."</td>" .
5970                              "</tr>\n";
5971                }
5972        }
5973
5974        print "</table>\n";
5975
5976        # If XSS prevention is on, we don't include README.html.
5977        # TODO: Allow a readme in some safe format.
5978        if (!$prevent_xss && -s "$projectroot/$project/README.html") {
5979                print "<div class=\"title\">readme</div>\n" .
5980                      "<div class=\"readme\">\n";
5981                insert_file("$projectroot/$project/README.html");
5982                print "\n</div>\n"; # class="readme"
5983        }
5984
5985        # we need to request one more than 16 (0..15) to check if
5986        # those 16 are all
5987        my @commitlist = $head ? parse_commits($head, 17) : ();
5988        if (@commitlist) {
5989                git_print_header_div('shortlog');
5990                git_shortlog_body(\@commitlist, 0, 15, $refs,
5991                                  $#commitlist <=  15 ? undef :
5992                                  $cgi->a({-href => href(action=>"shortlog")}, "..."));
5993        }
5994
5995        if (@taglist) {
5996                git_print_header_div('tags');
5997                git_tags_body(\@taglist, 0, 15,
5998                              $#taglist <=  15 ? undef :
5999                              $cgi->a({-href => href(action=>"tags")}, "..."));
6000        }
6001
6002        if (@headlist) {
6003                git_print_header_div('heads');
6004                git_heads_body(\@headlist, $head, 0, 15,
6005                               $#headlist <= 15 ? undef :
6006                               $cgi->a({-href => href(action=>"heads")}, "..."));
6007        }
6008
6009        if (%remotedata) {
6010                git_print_header_div('remotes');
6011                git_remotes_body(\%remotedata, 15, $head);
6012        }
6013
6014        if (@forklist) {
6015                git_print_header_div('forks');
6016                git_project_list_body(\@forklist, 'age', 0, 15,
6017                                      $#forklist <= 15 ? undef :
6018                                      $cgi->a({-href => href(action=>"forks")}, "..."),
6019                                      'no_header');
6020        }
6021
6022        git_footer_html();
6023}
6024
6025sub git_tag {
6026        my %tag = parse_tag($hash);
6027
6028        if (! %tag) {
6029                die_error(404, "Unknown tag object");
6030        }
6031
6032        my $head = git_get_head_hash($project);
6033        git_header_html();
6034        git_print_page_nav('','', $head,undef,$head);
6035        git_print_header_div('commit', esc_html($tag{'name'}), $hash);
6036        print "<div class=\"title_text\">\n" .
6037              "<table class=\"object_header\">\n" .
6038              "<tr>\n" .
6039              "<td>object</td>\n" .
6040              "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
6041                               $tag{'object'}) . "</td>\n" .
6042              "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
6043                                              $tag{'type'}) . "</td>\n" .
6044              "</tr>\n";
6045        if (defined($tag{'author'})) {
6046                git_print_authorship_rows(\%tag, 'author');
6047        }
6048        print "</table>\n\n" .
6049              "</div>\n";
6050        print "<div class=\"page_body\">";
6051        my $comment = $tag{'comment'};
6052        foreach my $line (@$comment) {
6053                chomp $line;
6054                print esc_html($line, -nbsp=>1) . "<br/>\n";
6055        }
6056        print "</div>\n";
6057        git_footer_html();
6058}
6059
6060sub git_blame_common {
6061        my $format = shift || 'porcelain';
6062        if ($format eq 'porcelain' && $cgi->param('js')) {
6063                $format = 'incremental';
6064                $action = 'blame_incremental'; # for page title etc
6065        }
6066
6067        # permissions
6068        gitweb_check_feature('blame')
6069                or die_error(403, "Blame view not allowed");
6070
6071        # error checking
6072        die_error(400, "No file name given") unless $file_name;
6073        $hash_base ||= git_get_head_hash($project);
6074        die_error(404, "Couldn't find base commit") unless $hash_base;
6075        my %co = parse_commit($hash_base)
6076                or die_error(404, "Commit not found");
6077        my $ftype = "blob";
6078        if (!defined $hash) {
6079                $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
6080                        or die_error(404, "Error looking up file");
6081        } else {
6082                $ftype = git_get_type($hash);
6083                if ($ftype !~ "blob") {
6084                        die_error(400, "Object is not a blob");
6085                }
6086        }
6087
6088        my $fd;
6089        if ($format eq 'incremental') {
6090                # get file contents (as base)
6091                open $fd, "-|", git_cmd(), 'cat-file', 'blob', $hash
6092                        or die_error(500, "Open git-cat-file failed");
6093        } elsif ($format eq 'data') {
6094                # run git-blame --incremental
6095                open $fd, "-|", git_cmd(), "blame", "--incremental",
6096                        $hash_base, "--", $file_name
6097                        or die_error(500, "Open git-blame --incremental failed");
6098        } else {
6099                # run git-blame --porcelain
6100                open $fd, "-|", git_cmd(), "blame", '-p',
6101                        $hash_base, '--', $file_name
6102                        or die_error(500, "Open git-blame --porcelain failed");
6103        }
6104
6105        # incremental blame data returns early
6106        if ($format eq 'data') {
6107                print $cgi->header(
6108                        -type=>"text/plain", -charset => "utf-8",
6109                        -status=> "200 OK");
6110                local $| = 1; # output autoflush
6111                while (my $line = <$fd>) {
6112                        print to_utf8($line);
6113                }
6114                close $fd
6115                        or print "ERROR $!\n";
6116
6117                print 'END';
6118                if (defined $t0 && gitweb_check_feature('timed')) {
6119                        print ' '.
6120                              tv_interval($t0, [ gettimeofday() ]).
6121                              ' '.$number_of_git_cmds;
6122                }
6123                print "\n";
6124
6125                return;
6126        }
6127
6128        # page header
6129        git_header_html();
6130        my $formats_nav =
6131                $cgi->a({-href => href(action=>"blob", -replay=>1)},
6132                        "blob") .
6133                " | ";
6134        if ($format eq 'incremental') {
6135                $formats_nav .=
6136                        $cgi->a({-href => href(action=>"blame", javascript=>0, -replay=>1)},
6137                                "blame") . " (non-incremental)";
6138        } else {
6139                $formats_nav .=
6140                        $cgi->a({-href => href(action=>"blame_incremental", -replay=>1)},
6141                                "blame") . " (incremental)";
6142        }
6143        $formats_nav .=
6144                " | " .
6145                $cgi->a({-href => href(action=>"history", -replay=>1)},
6146                        "history") .
6147                " | " .
6148                $cgi->a({-href => href(action=>$action, file_name=>$file_name)},
6149                        "HEAD");
6150        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
6151        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
6152        git_print_page_path($file_name, $ftype, $hash_base);
6153
6154        # page body
6155        if ($format eq 'incremental') {
6156                print "<noscript>\n<div class=\"error\"><center><b>\n".
6157                      "This page requires JavaScript to run.\n Use ".
6158                      $cgi->a({-href => href(action=>'blame',javascript=>0,-replay=>1)},
6159                              'this page').
6160                      " instead.\n".
6161                      "</b></center></div>\n</noscript>\n";
6162
6163                print qq!<div id="progress_bar" style="width: 100%; background-color: yellow"></div>\n!;
6164        }
6165
6166        print qq!<div class="page_body">\n!;
6167        print qq!<div id="progress_info">... / ...</div>\n!
6168                if ($format eq 'incremental');
6169        print qq!<table id="blame_table" class="blame" width="100%">\n!.
6170              #qq!<col width="5.5em" /><col width="2.5em" /><col width="*" />\n!.
6171              qq!<thead>\n!.
6172              qq!<tr><th>Commit</th><th>Line</th><th>Data</th></tr>\n!.
6173              qq!</thead>\n!.
6174              qq!<tbody>\n!;
6175
6176        my @rev_color = qw(light dark);
6177        my $num_colors = scalar(@rev_color);
6178        my $current_color = 0;
6179
6180        if ($format eq 'incremental') {
6181                my $color_class = $rev_color[$current_color];
6182
6183                #contents of a file
6184                my $linenr = 0;
6185        LINE:
6186                while (my $line = <$fd>) {
6187                        chomp $line;
6188                        $linenr++;
6189
6190                        print qq!<tr id="l$linenr" class="$color_class">!.
6191                              qq!<td class="sha1"><a href=""> </a></td>!.
6192                              qq!<td class="linenr">!.
6193                              qq!<a class="linenr" href="">$linenr</a></td>!;
6194                        print qq!<td class="pre">! . esc_html($line) . "</td>\n";
6195                        print qq!</tr>\n!;
6196                }
6197
6198        } else { # porcelain, i.e. ordinary blame
6199                my %metainfo = (); # saves information about commits
6200
6201                # blame data
6202        LINE:
6203                while (my $line = <$fd>) {
6204                        chomp $line;
6205                        # the header: <SHA-1> <src lineno> <dst lineno> [<lines in group>]
6206                        # no <lines in group> for subsequent lines in group of lines
6207                        my ($full_rev, $orig_lineno, $lineno, $group_size) =
6208                           ($line =~ /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/);
6209                        if (!exists $metainfo{$full_rev}) {
6210                                $metainfo{$full_rev} = { 'nprevious' => 0 };
6211                        }
6212                        my $meta = $metainfo{$full_rev};
6213                        my $data;
6214                        while ($data = <$fd>) {
6215                                chomp $data;
6216                                last if ($data =~ s/^\t//); # contents of line
6217                                if ($data =~ /^(\S+)(?: (.*))?$/) {
6218                                        $meta->{$1} = $2 unless exists $meta->{$1};
6219                                }
6220                                if ($data =~ /^previous /) {
6221                                        $meta->{'nprevious'}++;
6222                                }
6223                        }
6224                        my $short_rev = substr($full_rev, 0, 8);
6225                        my $author = $meta->{'author'};
6226                        my %date =
6227                                parse_date($meta->{'author-time'}, $meta->{'author-tz'});
6228                        my $date = $date{'iso-tz'};
6229                        if ($group_size) {
6230                                $current_color = ($current_color + 1) % $num_colors;
6231                        }
6232                        my $tr_class = $rev_color[$current_color];
6233                        $tr_class .= ' boundary' if (exists $meta->{'boundary'});
6234                        $tr_class .= ' no-previous' if ($meta->{'nprevious'} == 0);
6235                        $tr_class .= ' multiple-previous' if ($meta->{'nprevious'} > 1);
6236                        print "<tr id=\"l$lineno\" class=\"$tr_class\">\n";
6237                        if ($group_size) {
6238                                print "<td class=\"sha1\"";
6239                                print " title=\"". esc_html($author) . ", $date\"";
6240                                print " rowspan=\"$group_size\"" if ($group_size > 1);
6241                                print ">";
6242                                print $cgi->a({-href => href(action=>"commit",
6243                                                             hash=>$full_rev,
6244                                                             file_name=>$file_name)},
6245                                              esc_html($short_rev));
6246                                if ($group_size >= 2) {
6247                                        my @author_initials = ($author =~ /\b([[:upper:]])\B/g);
6248                                        if (@author_initials) {
6249                                                print "<br />" .
6250                                                      esc_html(join('', @author_initials));
6251                                                #           or join('.', ...)
6252                                        }
6253                                }
6254                                print "</td>\n";
6255                        }
6256                        # 'previous' <sha1 of parent commit> <filename at commit>
6257                        if (exists $meta->{'previous'} &&
6258                            $meta->{'previous'} =~ /^([a-fA-F0-9]{40}) (.*)$/) {
6259                                $meta->{'parent'} = $1;
6260                                $meta->{'file_parent'} = unquote($2);
6261                        }
6262                        my $linenr_commit =
6263                                exists($meta->{'parent'}) ?
6264                                $meta->{'parent'} : $full_rev;
6265                        my $linenr_filename =
6266                                exists($meta->{'file_parent'}) ?
6267                                $meta->{'file_parent'} : unquote($meta->{'filename'});
6268                        my $blamed = href(action => 'blame',
6269                                          file_name => $linenr_filename,
6270                                          hash_base => $linenr_commit);
6271                        print "<td class=\"linenr\">";
6272                        print $cgi->a({ -href => "$blamed#l$orig_lineno",
6273                                        -class => "linenr" },
6274                                      esc_html($lineno));
6275                        print "</td>";
6276                        print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
6277                        print "</tr>\n";
6278                } # end while
6279
6280        }
6281
6282        # footer
6283        print "</tbody>\n".
6284              "</table>\n"; # class="blame"
6285        print "</div>\n";   # class="blame_body"
6286        close $fd
6287                or print "Reading blob failed\n";
6288
6289        git_footer_html();
6290}
6291
6292sub git_blame {
6293        git_blame_common();
6294}
6295
6296sub git_blame_incremental {
6297        git_blame_common('incremental');
6298}
6299
6300sub git_blame_data {
6301        git_blame_common('data');
6302}
6303
6304sub git_tags {
6305        my $head = git_get_head_hash($project);
6306        git_header_html();
6307        git_print_page_nav('','', $head,undef,$head,format_ref_views('tags'));
6308        git_print_header_div('summary', $project);
6309
6310        my @tagslist = git_get_tags_list();
6311        if (@tagslist) {
6312                git_tags_body(\@tagslist);
6313        }
6314        git_footer_html();
6315}
6316
6317sub git_heads {
6318        my $head = git_get_head_hash($project);
6319        git_header_html();
6320        git_print_page_nav('','', $head,undef,$head,format_ref_views('heads'));
6321        git_print_header_div('summary', $project);
6322
6323        my @headslist = git_get_heads_list();
6324        if (@headslist) {
6325                git_heads_body(\@headslist, $head);
6326        }
6327        git_footer_html();
6328}
6329
6330# used both for single remote view and for list of all the remotes
6331sub git_remotes {
6332        gitweb_check_feature('remote_heads')
6333                or die_error(403, "Remote heads view is disabled");
6334
6335        my $head = git_get_head_hash($project);
6336        my $remote = $input_params{'hash'};
6337
6338        my $remotedata = git_get_remotes_list($remote);
6339        die_error(500, "Unable to get remote information") unless defined $remotedata;
6340
6341        unless (%$remotedata) {
6342                die_error(404, defined $remote ?
6343                        "Remote $remote not found" :
6344                        "No remotes found");
6345        }
6346
6347        git_header_html(undef, undef, -action_extra => $remote);
6348        git_print_page_nav('', '',  $head, undef, $head,
6349                format_ref_views($remote ? '' : 'remotes'));
6350
6351        fill_remote_heads($remotedata);
6352        if (defined $remote) {
6353                git_print_header_div('remotes', "$remote remote for $project");
6354                git_remote_block($remote, $remotedata->{$remote}, undef, $head);
6355        } else {
6356                git_print_header_div('summary', "$project remotes");
6357                git_remotes_body($remotedata, undef, $head);
6358        }
6359
6360        git_footer_html();
6361}
6362
6363sub git_blob_plain {
6364        my $type = shift;
6365        my $expires;
6366
6367        if (!defined $hash) {
6368                if (defined $file_name) {
6369                        my $base = $hash_base || git_get_head_hash($project);
6370                        $hash = git_get_hash_by_path($base, $file_name, "blob")
6371                                or die_error(404, "Cannot find file");
6372                } else {
6373                        die_error(400, "No file name defined");
6374                }
6375        } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
6376                # blobs defined by non-textual hash id's can be cached
6377                $expires = "+1d";
6378        }
6379
6380        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
6381                or die_error(500, "Open git-cat-file blob '$hash' failed");
6382
6383        # content-type (can include charset)
6384        $type = blob_contenttype($fd, $file_name, $type);
6385
6386        # "save as" filename, even when no $file_name is given
6387        my $save_as = "$hash";
6388        if (defined $file_name) {
6389                $save_as = $file_name;
6390        } elsif ($type =~ m/^text\//) {
6391                $save_as .= '.txt';
6392        }
6393
6394        # With XSS prevention on, blobs of all types except a few known safe
6395        # ones are served with "Content-Disposition: attachment" to make sure
6396        # they don't run in our security domain.  For certain image types,
6397        # blob view writes an <img> tag referring to blob_plain view, and we
6398        # want to be sure not to break that by serving the image as an
6399        # attachment (though Firefox 3 doesn't seem to care).
6400        my $sandbox = $prevent_xss &&
6401                $type !~ m!^(?:text/[a-z]+|image/(?:gif|png|jpeg))(?:[ ;]|$)!;
6402
6403        # serve text/* as text/plain
6404        if ($prevent_xss &&
6405            ($type =~ m!^text/[a-z]+\b(.*)$! ||
6406             ($type =~ m!^[a-z]+/[a-z]\+xml\b(.*)$! && -T $fd))) {
6407                my $rest = $1;
6408                $rest = defined $rest ? $rest : '';
6409                $type = "text/plain$rest";
6410        }
6411
6412        print $cgi->header(
6413                -type => $type,
6414                -expires => $expires,
6415                -content_disposition =>
6416                        ($sandbox ? 'attachment' : 'inline')
6417                        . '; filename="' . $save_as . '"');
6418        local $/ = undef;
6419        binmode STDOUT, ':raw';
6420        print <$fd>;
6421        binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
6422        close $fd;
6423}
6424
6425sub git_blob {
6426        my $expires;
6427
6428        if (!defined $hash) {
6429                if (defined $file_name) {
6430                        my $base = $hash_base || git_get_head_hash($project);
6431                        $hash = git_get_hash_by_path($base, $file_name, "blob")
6432                                or die_error(404, "Cannot find file");
6433                } else {
6434                        die_error(400, "No file name defined");
6435                }
6436        } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
6437                # blobs defined by non-textual hash id's can be cached
6438                $expires = "+1d";
6439        }
6440
6441        my $have_blame = gitweb_check_feature('blame');
6442        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
6443                or die_error(500, "Couldn't cat $file_name, $hash");
6444        my $mimetype = blob_mimetype($fd, $file_name);
6445        # use 'blob_plain' (aka 'raw') view for files that cannot be displayed
6446        if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)! && -B $fd) {
6447                close $fd;
6448                return git_blob_plain($mimetype);
6449        }
6450        # we can have blame only for text/* mimetype
6451        $have_blame &&= ($mimetype =~ m!^text/!);
6452
6453        my $highlight = gitweb_check_feature('highlight');
6454        my $syntax = guess_file_syntax($highlight, $mimetype, $file_name);
6455        $fd = run_highlighter($fd, $highlight, $syntax)
6456                if $syntax;
6457
6458        git_header_html(undef, $expires);
6459        my $formats_nav = '';
6460        if (defined $hash_base && (my %co = parse_commit($hash_base))) {
6461                if (defined $file_name) {
6462                        if ($have_blame) {
6463                                $formats_nav .=
6464                                        $cgi->a({-href => href(action=>"blame", -replay=>1)},
6465                                                "blame") .
6466                                        " | ";
6467                        }
6468                        $formats_nav .=
6469                                $cgi->a({-href => href(action=>"history", -replay=>1)},
6470                                        "history") .
6471                                " | " .
6472                                $cgi->a({-href => href(action=>"blob_plain", -replay=>1)},
6473                                        "raw") .
6474                                " | " .
6475                                $cgi->a({-href => href(action=>"blob",
6476                                                       hash_base=>"HEAD", file_name=>$file_name)},
6477                                        "HEAD");
6478                } else {
6479                        $formats_nav .=
6480                                $cgi->a({-href => href(action=>"blob_plain", -replay=>1)},
6481                                        "raw");
6482                }
6483                git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
6484                git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
6485        } else {
6486                print "<div class=\"page_nav\">\n" .
6487                      "<br/><br/></div>\n" .
6488                      "<div class=\"title\">".esc_html($hash)."</div>\n";
6489        }
6490        git_print_page_path($file_name, "blob", $hash_base);
6491        print "<div class=\"page_body\">\n";
6492        if ($mimetype =~ m!^image/!) {
6493                print qq!<img type="!.esc_attr($mimetype).qq!"!;
6494                if ($file_name) {
6495                        print qq! alt="!.esc_attr($file_name).qq!" title="!.esc_attr($file_name).qq!"!;
6496                }
6497                print qq! src="! .
6498                      href(action=>"blob_plain", hash=>$hash,
6499                           hash_base=>$hash_base, file_name=>$file_name) .
6500                      qq!" />\n!;
6501        } else {
6502                my $nr;
6503                while (my $line = <$fd>) {
6504                        chomp $line;
6505                        $nr++;
6506                        $line = untabify($line);
6507                        printf qq!<div class="pre"><a id="l%i" href="%s#l%i" class="linenr">%4i</a> %s</div>\n!,
6508                               $nr, esc_attr(href(-replay => 1)), $nr, $nr,
6509                               $syntax ? sanitize($line) : esc_html($line, -nbsp=>1);
6510                }
6511        }
6512        close $fd
6513                or print "Reading blob failed.\n";
6514        print "</div>";
6515        git_footer_html();
6516}
6517
6518sub git_tree {
6519        if (!defined $hash_base) {
6520                $hash_base = "HEAD";
6521        }
6522        if (!defined $hash) {
6523                if (defined $file_name) {
6524                        $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
6525                } else {
6526                        $hash = $hash_base;
6527                }
6528        }
6529        die_error(404, "No such tree") unless defined($hash);
6530
6531        my $show_sizes = gitweb_check_feature('show-sizes');
6532        my $have_blame = gitweb_check_feature('blame');
6533
6534        my @entries = ();
6535        {
6536                local $/ = "\0";
6537                open my $fd, "-|", git_cmd(), "ls-tree", '-z',
6538                        ($show_sizes ? '-l' : ()), @extra_options, $hash
6539                        or die_error(500, "Open git-ls-tree failed");
6540                @entries = map { chomp; $_ } <$fd>;
6541                close $fd
6542                        or die_error(404, "Reading tree failed");
6543        }
6544
6545        my $refs = git_get_references();
6546        my $ref = format_ref_marker($refs, $hash_base);
6547        git_header_html();
6548        my $basedir = '';
6549        if (defined $hash_base && (my %co = parse_commit($hash_base))) {
6550                my @views_nav = ();
6551                if (defined $file_name) {
6552                        push @views_nav,
6553                                $cgi->a({-href => href(action=>"history", -replay=>1)},
6554                                        "history"),
6555                                $cgi->a({-href => href(action=>"tree",
6556                                                       hash_base=>"HEAD", file_name=>$file_name)},
6557                                        "HEAD"),
6558                }
6559                my $snapshot_links = format_snapshot_links($hash);
6560                if (defined $snapshot_links) {
6561                        # FIXME: Should be available when we have no hash base as well.
6562                        push @views_nav, $snapshot_links;
6563                }
6564                git_print_page_nav('tree','', $hash_base, undef, undef,
6565                                   join(' | ', @views_nav));
6566                git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
6567        } else {
6568                undef $hash_base;
6569                print "<div class=\"page_nav\">\n";
6570                print "<br/><br/></div>\n";
6571                print "<div class=\"title\">".esc_html($hash)."</div>\n";
6572        }
6573        if (defined $file_name) {
6574                $basedir = $file_name;
6575                if ($basedir ne '' && substr($basedir, -1) ne '/') {
6576                        $basedir .= '/';
6577                }
6578                git_print_page_path($file_name, 'tree', $hash_base);
6579        }
6580        print "<div class=\"page_body\">\n";
6581        print "<table class=\"tree\">\n";
6582        my $alternate = 1;
6583        # '..' (top directory) link if possible
6584        if (defined $hash_base &&
6585            defined $file_name && $file_name =~ m![^/]+$!) {
6586                if ($alternate) {
6587                        print "<tr class=\"dark\">\n";
6588                } else {
6589                        print "<tr class=\"light\">\n";
6590                }
6591                $alternate ^= 1;
6592
6593                my $up = $file_name;
6594                $up =~ s!/?[^/]+$!!;
6595                undef $up unless $up;
6596                # based on git_print_tree_entry
6597                print '<td class="mode">' . mode_str('040000') . "</td>\n";
6598                print '<td class="size">&nbsp;</td>'."\n" if $show_sizes;
6599                print '<td class="list">';
6600                print $cgi->a({-href => href(action=>"tree",
6601                                             hash_base=>$hash_base,
6602                                             file_name=>$up)},
6603                              "..");
6604                print "</td>\n";
6605                print "<td class=\"link\"></td>\n";
6606
6607                print "</tr>\n";
6608        }
6609        foreach my $line (@entries) {
6610                my %t = parse_ls_tree_line($line, -z => 1, -l => $show_sizes);
6611
6612                if ($alternate) {
6613                        print "<tr class=\"dark\">\n";
6614                } else {
6615                        print "<tr class=\"light\">\n";
6616                }
6617                $alternate ^= 1;
6618
6619                git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
6620
6621                print "</tr>\n";
6622        }
6623        print "</table>\n" .
6624              "</div>";
6625        git_footer_html();
6626}
6627
6628sub snapshot_name {
6629        my ($project, $hash) = @_;
6630
6631        # path/to/project.git  -> project
6632        # path/to/project/.git -> project
6633        my $name = to_utf8($project);
6634        $name =~ s,([^/])/*\.git$,$1,;
6635        $name = basename($name);
6636        # sanitize name
6637        $name =~ s/[[:cntrl:]]/?/g;
6638
6639        my $ver = $hash;
6640        if ($hash =~ /^[0-9a-fA-F]+$/) {
6641                # shorten SHA-1 hash
6642                my $full_hash = git_get_full_hash($project, $hash);
6643                if ($full_hash =~ /^$hash/ && length($hash) > 7) {
6644                        $ver = git_get_short_hash($project, $hash);
6645                }
6646        } elsif ($hash =~ m!^refs/tags/(.*)$!) {
6647                # tags don't need shortened SHA-1 hash
6648                $ver = $1;
6649        } else {
6650                # branches and other need shortened SHA-1 hash
6651                if ($hash =~ m!^refs/(?:heads|remotes)/(.*)$!) {
6652                        $ver = $1;
6653                }
6654                $ver .= '-' . git_get_short_hash($project, $hash);
6655        }
6656        # in case of hierarchical branch names
6657        $ver =~ s!/!.!g;
6658
6659        # name = project-version_string
6660        $name = "$name-$ver";
6661
6662        return wantarray ? ($name, $name) : $name;
6663}
6664
6665sub git_snapshot {
6666        my $format = $input_params{'snapshot_format'};
6667        if (!@snapshot_fmts) {
6668                die_error(403, "Snapshots not allowed");
6669        }
6670        # default to first supported snapshot format
6671        $format ||= $snapshot_fmts[0];
6672        if ($format !~ m/^[a-z0-9]+$/) {
6673                die_error(400, "Invalid snapshot format parameter");
6674        } elsif (!exists($known_snapshot_formats{$format})) {
6675                die_error(400, "Unknown snapshot format");
6676        } elsif ($known_snapshot_formats{$format}{'disabled'}) {
6677                die_error(403, "Snapshot format not allowed");
6678        } elsif (!grep($_ eq $format, @snapshot_fmts)) {
6679                die_error(403, "Unsupported snapshot format");
6680        }
6681
6682        my $type = git_get_type("$hash^{}");
6683        if (!$type) {
6684                die_error(404, 'Object does not exist');
6685        }  elsif ($type eq 'blob') {
6686                die_error(400, 'Object is not a tree-ish');
6687        }
6688
6689        my ($name, $prefix) = snapshot_name($project, $hash);
6690        my $filename = "$name$known_snapshot_formats{$format}{'suffix'}";
6691        my $cmd = quote_command(
6692                git_cmd(), 'archive',
6693                "--format=$known_snapshot_formats{$format}{'format'}",
6694                "--prefix=$prefix/", $hash);
6695        if (exists $known_snapshot_formats{$format}{'compressor'}) {
6696                $cmd .= ' | ' . quote_command(@{$known_snapshot_formats{$format}{'compressor'}});
6697        }
6698
6699        $filename =~ s/(["\\])/\\$1/g;
6700        print $cgi->header(
6701                -type => $known_snapshot_formats{$format}{'type'},
6702                -content_disposition => 'inline; filename="' . $filename . '"',
6703                -status => '200 OK');
6704
6705        open my $fd, "-|", $cmd
6706                or die_error(500, "Execute git-archive failed");
6707        binmode STDOUT, ':raw';
6708        print <$fd>;
6709        binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
6710        close $fd;
6711}
6712
6713sub git_log_generic {
6714        my ($fmt_name, $body_subr, $base, $parent, $file_name, $file_hash) = @_;
6715
6716        my $head = git_get_head_hash($project);
6717        if (!defined $base) {
6718                $base = $head;
6719        }
6720        if (!defined $page) {
6721                $page = 0;
6722        }
6723        my $refs = git_get_references();
6724
6725        my $commit_hash = $base;
6726        if (defined $parent) {
6727                $commit_hash = "$parent..$base";
6728        }
6729        my @commitlist =
6730                parse_commits($commit_hash, 101, (100 * $page),
6731                              defined $file_name ? ($file_name, "--full-history") : ());
6732
6733        my $ftype;
6734        if (!defined $file_hash && defined $file_name) {
6735                # some commits could have deleted file in question,
6736                # and not have it in tree, but one of them has to have it
6737                for (my $i = 0; $i < @commitlist; $i++) {
6738                        $file_hash = git_get_hash_by_path($commitlist[$i]{'id'}, $file_name);
6739                        last if defined $file_hash;
6740                }
6741        }
6742        if (defined $file_hash) {
6743                $ftype = git_get_type($file_hash);
6744        }
6745        if (defined $file_name && !defined $ftype) {
6746                die_error(500, "Unknown type of object");
6747        }
6748        my %co;
6749        if (defined $file_name) {
6750                %co = parse_commit($base)
6751                        or die_error(404, "Unknown commit object");
6752        }
6753
6754
6755        my $paging_nav = format_paging_nav($fmt_name, $page, $#commitlist >= 100);
6756        my $next_link = '';
6757        if ($#commitlist >= 100) {
6758                $next_link =
6759                        $cgi->a({-href => href(-replay=>1, page=>$page+1),
6760                                 -accesskey => "n", -title => "Alt-n"}, "next");
6761        }
6762        my $patch_max = gitweb_get_feature('patches');
6763        if ($patch_max && !defined $file_name) {
6764                if ($patch_max < 0 || @commitlist <= $patch_max) {
6765                        $paging_nav .= " &sdot; " .
6766                                $cgi->a({-href => href(action=>"patches", -replay=>1)},
6767                                        "patches");
6768                }
6769        }
6770
6771        git_header_html();
6772        git_print_page_nav($fmt_name,'', $hash,$hash,$hash, $paging_nav);
6773        if (defined $file_name) {
6774                git_print_header_div('commit', esc_html($co{'title'}), $base);
6775        } else {
6776                git_print_header_div('summary', $project)
6777        }
6778        git_print_page_path($file_name, $ftype, $hash_base)
6779                if (defined $file_name);
6780
6781        $body_subr->(\@commitlist, 0, 99, $refs, $next_link,
6782                     $file_name, $file_hash, $ftype);
6783
6784        git_footer_html();
6785}
6786
6787sub git_log {
6788        git_log_generic('log', \&git_log_body,
6789                        $hash, $hash_parent);
6790}
6791
6792sub git_commit {
6793        $hash ||= $hash_base || "HEAD";
6794        my %co = parse_commit($hash)
6795            or die_error(404, "Unknown commit object");
6796
6797        my $parent  = $co{'parent'};
6798        my $parents = $co{'parents'}; # listref
6799
6800        # we need to prepare $formats_nav before any parameter munging
6801        my $formats_nav;
6802        if (!defined $parent) {
6803                # --root commitdiff
6804                $formats_nav .= '(initial)';
6805        } elsif (@$parents == 1) {
6806                # single parent commit
6807                $formats_nav .=
6808                        '(parent: ' .
6809                        $cgi->a({-href => href(action=>"commit",
6810                                               hash=>$parent)},
6811                                esc_html(substr($parent, 0, 7))) .
6812                        ')';
6813        } else {
6814                # merge commit
6815                $formats_nav .=
6816                        '(merge: ' .
6817                        join(' ', map {
6818                                $cgi->a({-href => href(action=>"commit",
6819                                                       hash=>$_)},
6820                                        esc_html(substr($_, 0, 7)));
6821                        } @$parents ) .
6822                        ')';
6823        }
6824        if (gitweb_check_feature('patches') && @$parents <= 1) {
6825                $formats_nav .= " | " .
6826                        $cgi->a({-href => href(action=>"patch", -replay=>1)},
6827                                "patch");
6828        }
6829
6830        if (!defined $parent) {
6831                $parent = "--root";
6832        }
6833        my @difftree;
6834        open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
6835                @diff_opts,
6836                (@$parents <= 1 ? $parent : '-c'),
6837                $hash, "--"
6838                or die_error(500, "Open git-diff-tree failed");
6839        @difftree = map { chomp; $_ } <$fd>;
6840        close $fd or die_error(404, "Reading git-diff-tree failed");
6841
6842        # non-textual hash id's can be cached
6843        my $expires;
6844        if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
6845                $expires = "+1d";
6846        }
6847        my $refs = git_get_references();
6848        my $ref = format_ref_marker($refs, $co{'id'});
6849
6850        git_header_html(undef, $expires);
6851        git_print_page_nav('commit', '',
6852                           $hash, $co{'tree'}, $hash,
6853                           $formats_nav);
6854
6855        if (defined $co{'parent'}) {
6856                git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
6857        } else {
6858                git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
6859        }
6860        print "<div class=\"title_text\">\n" .
6861              "<table class=\"object_header\">\n";
6862        git_print_authorship_rows(\%co);
6863        print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
6864        print "<tr>" .
6865              "<td>tree</td>" .
6866              "<td class=\"sha1\">" .
6867              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
6868                       class => "list"}, $co{'tree'}) .
6869              "</td>" .
6870              "<td class=\"link\">" .
6871              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
6872                      "tree");
6873        my $snapshot_links = format_snapshot_links($hash);
6874        if (defined $snapshot_links) {
6875                print " | " . $snapshot_links;
6876        }
6877        print "</td>" .
6878              "</tr>\n";
6879
6880        foreach my $par (@$parents) {
6881                print "<tr>" .
6882                      "<td>parent</td>" .
6883                      "<td class=\"sha1\">" .
6884                      $cgi->a({-href => href(action=>"commit", hash=>$par),
6885                               class => "list"}, $par) .
6886                      "</td>" .
6887                      "<td class=\"link\">" .
6888                      $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
6889                      " | " .
6890                      $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
6891                      "</td>" .
6892                      "</tr>\n";
6893        }
6894        print "</table>".
6895              "</div>\n";
6896
6897        print "<div class=\"page_body\">\n";
6898        git_print_log($co{'comment'});
6899        print "</div>\n";
6900
6901        git_difftree_body(\@difftree, $hash, @$parents);
6902
6903        git_footer_html();
6904}
6905
6906sub git_object {
6907        # object is defined by:
6908        # - hash or hash_base alone
6909        # - hash_base and file_name
6910        my $type;
6911
6912        # - hash or hash_base alone
6913        if ($hash || ($hash_base && !defined $file_name)) {
6914                my $object_id = $hash || $hash_base;
6915
6916                open my $fd, "-|", quote_command(
6917                        git_cmd(), 'cat-file', '-t', $object_id) . ' 2> /dev/null'
6918                        or die_error(404, "Object does not exist");
6919                $type = <$fd>;
6920                chomp $type;
6921                close $fd
6922                        or die_error(404, "Object does not exist");
6923
6924        # - hash_base and file_name
6925        } elsif ($hash_base && defined $file_name) {
6926                $file_name =~ s,/+$,,;
6927
6928                system(git_cmd(), "cat-file", '-e', $hash_base) == 0
6929                        or die_error(404, "Base object does not exist");
6930
6931                # here errors should not hapen
6932                open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
6933                        or die_error(500, "Open git-ls-tree failed");
6934                my $line = <$fd>;
6935                close $fd;
6936
6937                #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
6938                unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
6939                        die_error(404, "File or directory for given base does not exist");
6940                }
6941                $type = $2;
6942                $hash = $3;
6943        } else {
6944                die_error(400, "Not enough information to find object");
6945        }
6946
6947        print $cgi->redirect(-uri => href(action=>$type, -full=>1,
6948                                          hash=>$hash, hash_base=>$hash_base,
6949                                          file_name=>$file_name),
6950                             -status => '302 Found');
6951}
6952
6953sub git_blobdiff {
6954        my $format = shift || 'html';
6955
6956        my $fd;
6957        my @difftree;
6958        my %diffinfo;
6959        my $expires;
6960
6961        # preparing $fd and %diffinfo for git_patchset_body
6962        # new style URI
6963        if (defined $hash_base && defined $hash_parent_base) {
6964                if (defined $file_name) {
6965                        # read raw output
6966                        open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
6967                                $hash_parent_base, $hash_base,
6968                                "--", (defined $file_parent ? $file_parent : ()), $file_name
6969                                or die_error(500, "Open git-diff-tree failed");
6970                        @difftree = map { chomp; $_ } <$fd>;
6971                        close $fd
6972                                or die_error(404, "Reading git-diff-tree failed");
6973                        @difftree
6974                                or die_error(404, "Blob diff not found");
6975
6976                } elsif (defined $hash &&
6977                         $hash =~ /[0-9a-fA-F]{40}/) {
6978                        # try to find filename from $hash
6979
6980                        # read filtered raw output
6981                        open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
6982                                $hash_parent_base, $hash_base, "--"
6983                                or die_error(500, "Open git-diff-tree failed");
6984                        @difftree =
6985                                # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
6986                                # $hash == to_id
6987                                grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
6988                                map { chomp; $_ } <$fd>;
6989                        close $fd
6990                                or die_error(404, "Reading git-diff-tree failed");
6991                        @difftree
6992                                or die_error(404, "Blob diff not found");
6993
6994                } else {
6995                        die_error(400, "Missing one of the blob diff parameters");
6996                }
6997
6998                if (@difftree > 1) {
6999                        die_error(400, "Ambiguous blob diff specification");
7000                }
7001
7002                %diffinfo = parse_difftree_raw_line($difftree[0]);
7003                $file_parent ||= $diffinfo{'from_file'} || $file_name;
7004                $file_name   ||= $diffinfo{'to_file'};
7005
7006                $hash_parent ||= $diffinfo{'from_id'};
7007                $hash        ||= $diffinfo{'to_id'};
7008
7009                # non-textual hash id's can be cached
7010                if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
7011                    $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
7012                        $expires = '+1d';
7013                }
7014
7015                # open patch output
7016                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
7017                        '-p', ($format eq 'html' ? "--full-index" : ()),
7018                        $hash_parent_base, $hash_base,
7019                        "--", (defined $file_parent ? $file_parent : ()), $file_name
7020                        or die_error(500, "Open git-diff-tree failed");
7021        }
7022
7023        # old/legacy style URI -- not generated anymore since 1.4.3.
7024        if (!%diffinfo) {
7025                die_error('404 Not Found', "Missing one of the blob diff parameters")
7026        }
7027
7028        # header
7029        if ($format eq 'html') {
7030                my $formats_nav =
7031                        $cgi->a({-href => href(action=>"blobdiff_plain", -replay=>1)},
7032                                "raw");
7033                git_header_html(undef, $expires);
7034                if (defined $hash_base && (my %co = parse_commit($hash_base))) {
7035                        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
7036                        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
7037                } else {
7038                        print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
7039                        print "<div class=\"title\">".esc_html("$hash vs $hash_parent")."</div>\n";
7040                }
7041                if (defined $file_name) {
7042                        git_print_page_path($file_name, "blob", $hash_base);
7043                } else {
7044                        print "<div class=\"page_path\"></div>\n";
7045                }
7046
7047        } elsif ($format eq 'plain') {
7048                print $cgi->header(
7049                        -type => 'text/plain',
7050                        -charset => 'utf-8',
7051                        -expires => $expires,
7052                        -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
7053
7054                print "X-Git-Url: " . $cgi->self_url() . "\n\n";
7055
7056        } else {
7057                die_error(400, "Unknown blobdiff format");
7058        }
7059
7060        # patch
7061        if ($format eq 'html') {
7062                print "<div class=\"page_body\">\n";
7063
7064                git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
7065                close $fd;
7066
7067                print "</div>\n"; # class="page_body"
7068                git_footer_html();
7069
7070        } else {
7071                while (my $line = <$fd>) {
7072                        $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
7073                        $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
7074
7075                        print $line;
7076
7077                        last if $line =~ m!^\+\+\+!;
7078                }
7079                local $/ = undef;
7080                print <$fd>;
7081                close $fd;
7082        }
7083}
7084
7085sub git_blobdiff_plain {
7086        git_blobdiff('plain');
7087}
7088
7089sub git_commitdiff {
7090        my %params = @_;
7091        my $format = $params{-format} || 'html';
7092
7093        my ($patch_max) = gitweb_get_feature('patches');
7094        if ($format eq 'patch') {
7095                die_error(403, "Patch view not allowed") unless $patch_max;
7096        }
7097
7098        $hash ||= $hash_base || "HEAD";
7099        my %co = parse_commit($hash)
7100            or die_error(404, "Unknown commit object");
7101
7102        # choose format for commitdiff for merge
7103        if (! defined $hash_parent && @{$co{'parents'}} > 1) {
7104                $hash_parent = '--cc';
7105        }
7106        # we need to prepare $formats_nav before almost any parameter munging
7107        my $formats_nav;
7108        if ($format eq 'html') {
7109                $formats_nav =
7110                        $cgi->a({-href => href(action=>"commitdiff_plain", -replay=>1)},
7111                                "raw");
7112                if ($patch_max && @{$co{'parents'}} <= 1) {
7113                        $formats_nav .= " | " .
7114                                $cgi->a({-href => href(action=>"patch", -replay=>1)},
7115                                        "patch");
7116                }
7117
7118                if (defined $hash_parent &&
7119                    $hash_parent ne '-c' && $hash_parent ne '--cc') {
7120                        # commitdiff with two commits given
7121                        my $hash_parent_short = $hash_parent;
7122                        if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
7123                                $hash_parent_short = substr($hash_parent, 0, 7);
7124                        }
7125                        $formats_nav .=
7126                                ' (from';
7127                        for (my $i = 0; $i < @{$co{'parents'}}; $i++) {
7128                                if ($co{'parents'}[$i] eq $hash_parent) {
7129                                        $formats_nav .= ' parent ' . ($i+1);
7130                                        last;
7131                                }
7132                        }
7133                        $formats_nav .= ': ' .
7134                                $cgi->a({-href => href(action=>"commitdiff",
7135                                                       hash=>$hash_parent)},
7136                                        esc_html($hash_parent_short)) .
7137                                ')';
7138                } elsif (!$co{'parent'}) {
7139                        # --root commitdiff
7140                        $formats_nav .= ' (initial)';
7141                } elsif (scalar @{$co{'parents'}} == 1) {
7142                        # single parent commit
7143                        $formats_nav .=
7144                                ' (parent: ' .
7145                                $cgi->a({-href => href(action=>"commitdiff",
7146                                                       hash=>$co{'parent'})},
7147                                        esc_html(substr($co{'parent'}, 0, 7))) .
7148                                ')';
7149                } else {
7150                        # merge commit
7151                        if ($hash_parent eq '--cc') {
7152                                $formats_nav .= ' | ' .
7153                                        $cgi->a({-href => href(action=>"commitdiff",
7154                                                               hash=>$hash, hash_parent=>'-c')},
7155                                                'combined');
7156                        } else { # $hash_parent eq '-c'
7157                                $formats_nav .= ' | ' .
7158                                        $cgi->a({-href => href(action=>"commitdiff",
7159                                                               hash=>$hash, hash_parent=>'--cc')},
7160                                                'compact');
7161                        }
7162                        $formats_nav .=
7163                                ' (merge: ' .
7164                                join(' ', map {
7165                                        $cgi->a({-href => href(action=>"commitdiff",
7166                                                               hash=>$_)},
7167                                                esc_html(substr($_, 0, 7)));
7168                                } @{$co{'parents'}} ) .
7169                                ')';
7170                }
7171        }
7172
7173        my $hash_parent_param = $hash_parent;
7174        if (!defined $hash_parent_param) {
7175                # --cc for multiple parents, --root for parentless
7176                $hash_parent_param =
7177                        @{$co{'parents'}} > 1 ? '--cc' : $co{'parent'} || '--root';
7178        }
7179
7180        # read commitdiff
7181        my $fd;
7182        my @difftree;
7183        if ($format eq 'html') {
7184                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
7185                        "--no-commit-id", "--patch-with-raw", "--full-index",
7186                        $hash_parent_param, $hash, "--"
7187                        or die_error(500, "Open git-diff-tree failed");
7188
7189                while (my $line = <$fd>) {
7190                        chomp $line;
7191                        # empty line ends raw part of diff-tree output
7192                        last unless $line;
7193                        push @difftree, scalar parse_difftree_raw_line($line);
7194                }
7195
7196        } elsif ($format eq 'plain') {
7197                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
7198                        '-p', $hash_parent_param, $hash, "--"
7199                        or die_error(500, "Open git-diff-tree failed");
7200        } elsif ($format eq 'patch') {
7201                # For commit ranges, we limit the output to the number of
7202                # patches specified in the 'patches' feature.
7203                # For single commits, we limit the output to a single patch,
7204                # diverging from the git-format-patch default.
7205                my @commit_spec = ();
7206                if ($hash_parent) {
7207                        if ($patch_max > 0) {
7208                                push @commit_spec, "-$patch_max";
7209                        }
7210                        push @commit_spec, '-n', "$hash_parent..$hash";
7211                } else {
7212                        if ($params{-single}) {
7213                                push @commit_spec, '-1';
7214                        } else {
7215                                if ($patch_max > 0) {
7216                                        push @commit_spec, "-$patch_max";
7217                                }
7218                                push @commit_spec, "-n";
7219                        }
7220                        push @commit_spec, '--root', $hash;
7221                }
7222                open $fd, "-|", git_cmd(), "format-patch", @diff_opts,
7223                        '--encoding=utf8', '--stdout', @commit_spec
7224                        or die_error(500, "Open git-format-patch failed");
7225        } else {
7226                die_error(400, "Unknown commitdiff format");
7227        }
7228
7229        # non-textual hash id's can be cached
7230        my $expires;
7231        if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
7232                $expires = "+1d";
7233        }
7234
7235        # write commit message
7236        if ($format eq 'html') {
7237                my $refs = git_get_references();
7238                my $ref = format_ref_marker($refs, $co{'id'});
7239
7240                git_header_html(undef, $expires);
7241                git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
7242                git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
7243                print "<div class=\"title_text\">\n" .
7244                      "<table class=\"object_header\">\n";
7245                git_print_authorship_rows(\%co);
7246                print "</table>".
7247                      "</div>\n";
7248                print "<div class=\"page_body\">\n";
7249                if (@{$co{'comment'}} > 1) {
7250                        print "<div class=\"log\">\n";
7251                        git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
7252                        print "</div>\n"; # class="log"
7253                }
7254
7255        } elsif ($format eq 'plain') {
7256                my $refs = git_get_references("tags");
7257                my $tagname = git_get_rev_name_tags($hash);
7258                my $filename = basename($project) . "-$hash.patch";
7259
7260                print $cgi->header(
7261                        -type => 'text/plain',
7262                        -charset => 'utf-8',
7263                        -expires => $expires,
7264                        -content_disposition => 'inline; filename="' . "$filename" . '"');
7265                my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
7266                print "From: " . to_utf8($co{'author'}) . "\n";
7267                print "Date: $ad{'rfc2822'} ($ad{'tz_local'})\n";
7268                print "Subject: " . to_utf8($co{'title'}) . "\n";
7269
7270                print "X-Git-Tag: $tagname\n" if $tagname;
7271                print "X-Git-Url: " . $cgi->self_url() . "\n\n";
7272
7273                foreach my $line (@{$co{'comment'}}) {
7274                        print to_utf8($line) . "\n";
7275                }
7276                print "---\n\n";
7277        } elsif ($format eq 'patch') {
7278                my $filename = basename($project) . "-$hash.patch";
7279
7280                print $cgi->header(
7281                        -type => 'text/plain',
7282                        -charset => 'utf-8',
7283                        -expires => $expires,
7284                        -content_disposition => 'inline; filename="' . "$filename" . '"');
7285        }
7286
7287        # write patch
7288        if ($format eq 'html') {
7289                my $use_parents = !defined $hash_parent ||
7290                        $hash_parent eq '-c' || $hash_parent eq '--cc';
7291                git_difftree_body(\@difftree, $hash,
7292                                  $use_parents ? @{$co{'parents'}} : $hash_parent);
7293                print "<br/>\n";
7294
7295                git_patchset_body($fd, \@difftree, $hash,
7296                                  $use_parents ? @{$co{'parents'}} : $hash_parent);
7297                close $fd;
7298                print "</div>\n"; # class="page_body"
7299                git_footer_html();
7300
7301        } elsif ($format eq 'plain') {
7302                local $/ = undef;
7303                print <$fd>;
7304                close $fd
7305                        or print "Reading git-diff-tree failed\n";
7306        } elsif ($format eq 'patch') {
7307                local $/ = undef;
7308                print <$fd>;
7309                close $fd
7310                        or print "Reading git-format-patch failed\n";
7311        }
7312}
7313
7314sub git_commitdiff_plain {
7315        git_commitdiff(-format => 'plain');
7316}
7317
7318# format-patch-style patches
7319sub git_patch {
7320        git_commitdiff(-format => 'patch', -single => 1);
7321}
7322
7323sub git_patches {
7324        git_commitdiff(-format => 'patch');
7325}
7326
7327sub git_history {
7328        git_log_generic('history', \&git_history_body,
7329                        $hash_base, $hash_parent_base,
7330                        $file_name, $hash);
7331}
7332
7333sub git_search {
7334        $searchtype ||= 'commit';
7335
7336        # check if appropriate features are enabled
7337        gitweb_check_feature('search')
7338                or die_error(403, "Search is disabled");
7339        if ($searchtype eq 'pickaxe') {
7340                # pickaxe may take all resources of your box and run for several minutes
7341                # with every query - so decide by yourself how public you make this feature
7342                gitweb_check_feature('pickaxe')
7343                        or die_error(403, "Pickaxe search is disabled");
7344        }
7345        if ($searchtype eq 'grep') {
7346                # grep search might be potentially CPU-intensive, too
7347                gitweb_check_feature('grep')
7348                        or die_error(403, "Grep search is disabled");
7349        }
7350
7351        if (!defined $searchtext) {
7352                die_error(400, "Text field is empty");
7353        }
7354        if (!defined $hash) {
7355                $hash = git_get_head_hash($project);
7356        }
7357        my %co = parse_commit($hash);
7358        if (!%co) {
7359                die_error(404, "Unknown commit object");
7360        }
7361        if (!defined $page) {
7362                $page = 0;
7363        }
7364
7365        if ($searchtype eq 'commit' ||
7366            $searchtype eq 'author' ||
7367            $searchtype eq 'committer') {
7368                git_search_message(%co);
7369        } elsif ($searchtype eq 'pickaxe') {
7370                git_search_changes(%co);
7371        } elsif ($searchtype eq 'grep') {
7372                git_search_files(%co);
7373        } else {
7374                die_error(400, "Unknown search type");
7375        }
7376}
7377
7378sub git_search_help {
7379        git_header_html();
7380        git_print_page_nav('','', $hash,$hash,$hash);
7381        print <<EOT;
7382<p><strong>Pattern</strong> is by default a normal string that is matched precisely (but without
7383regard to case, except in the case of pickaxe). However, when you check the <em>re</em> checkbox,
7384the pattern entered is recognized as the POSIX extended
7385<a href="http://en.wikipedia.org/wiki/Regular_expression">regular expression</a> (also case
7386insensitive).</p>
7387<dl>
7388<dt><b>commit</b></dt>
7389<dd>The commit messages and authorship information will be scanned for the given pattern.</dd>
7390EOT
7391        my $have_grep = gitweb_check_feature('grep');
7392        if ($have_grep) {
7393                print <<EOT;
7394<dt><b>grep</b></dt>
7395<dd>All files in the currently selected tree (HEAD unless you are explicitly browsing
7396    a different one) are searched for the given pattern. On large trees, this search can take
7397a while and put some strain on the server, so please use it with some consideration. Note that
7398due to git-grep peculiarity, currently if regexp mode is turned off, the matches are
7399case-sensitive.</dd>
7400EOT
7401        }
7402        print <<EOT;
7403<dt><b>author</b></dt>
7404<dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given pattern.</dd>
7405<dt><b>committer</b></dt>
7406<dd>Name and e-mail of the committer and date of commit will be scanned for the given pattern.</dd>
7407EOT
7408        my $have_pickaxe = gitweb_check_feature('pickaxe');
7409        if ($have_pickaxe) {
7410                print <<EOT;
7411<dt><b>pickaxe</b></dt>
7412<dd>All commits that caused the string to appear or disappear from any file (changes that
7413added, removed or "modified" the string) will be listed. This search can take a while and
7414takes a lot of strain on the server, so please use it wisely. Note that since you may be
7415interested even in changes just changing the case as well, this search is case sensitive.</dd>
7416EOT
7417        }
7418        print "</dl>\n";
7419        git_footer_html();
7420}
7421
7422sub git_shortlog {
7423        git_log_generic('shortlog', \&git_shortlog_body,
7424                        $hash, $hash_parent);
7425}
7426
7427## ......................................................................
7428## feeds (RSS, Atom; OPML)
7429
7430sub git_feed {
7431        my $format = shift || 'atom';
7432        my $have_blame = gitweb_check_feature('blame');
7433
7434        # Atom: http://www.atomenabled.org/developers/syndication/
7435        # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
7436        if ($format ne 'rss' && $format ne 'atom') {
7437                die_error(400, "Unknown web feed format");
7438        }
7439
7440        # log/feed of current (HEAD) branch, log of given branch, history of file/directory
7441        my $head = $hash || 'HEAD';
7442        my @commitlist = parse_commits($head, 150, 0, $file_name);
7443
7444        my %latest_commit;
7445        my %latest_date;
7446        my $content_type = "application/$format+xml";
7447        if (defined $cgi->http('HTTP_ACCEPT') &&
7448                 $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
7449                # browser (feed reader) prefers text/xml
7450                $content_type = 'text/xml';
7451        }
7452        if (defined($commitlist[0])) {
7453                %latest_commit = %{$commitlist[0]};
7454                my $latest_epoch = $latest_commit{'committer_epoch'};
7455                %latest_date   = parse_date($latest_epoch, $latest_commit{'comitter_tz'});
7456                my $if_modified = $cgi->http('IF_MODIFIED_SINCE');
7457                if (defined $if_modified) {
7458                        my $since;
7459                        if (eval { require HTTP::Date; 1; }) {
7460                                $since = HTTP::Date::str2time($if_modified);
7461                        } elsif (eval { require Time::ParseDate; 1; }) {
7462                                $since = Time::ParseDate::parsedate($if_modified, GMT => 1);
7463                        }
7464                        if (defined $since && $latest_epoch <= $since) {
7465                                print $cgi->header(
7466                                        -type => $content_type,
7467                                        -charset => 'utf-8',
7468                                        -last_modified => $latest_date{'rfc2822'},
7469                                        -status => '304 Not Modified');
7470                                return;
7471                        }
7472                }
7473                print $cgi->header(
7474                        -type => $content_type,
7475                        -charset => 'utf-8',
7476                        -last_modified => $latest_date{'rfc2822'});
7477        } else {
7478                print $cgi->header(
7479                        -type => $content_type,
7480                        -charset => 'utf-8');
7481        }
7482
7483        # Optimization: skip generating the body if client asks only
7484        # for Last-Modified date.
7485        return if ($cgi->request_method() eq 'HEAD');
7486
7487        # header variables
7488        my $title = "$site_name - $project/$action";
7489        my $feed_type = 'log';
7490        if (defined $hash) {
7491                $title .= " - '$hash'";
7492                $feed_type = 'branch log';
7493                if (defined $file_name) {
7494                        $title .= " :: $file_name";
7495                        $feed_type = 'history';
7496                }
7497        } elsif (defined $file_name) {
7498                $title .= " - $file_name";
7499                $feed_type = 'history';
7500        }
7501        $title .= " $feed_type";
7502        my $descr = git_get_project_description($project);
7503        if (defined $descr) {
7504                $descr = esc_html($descr);
7505        } else {
7506                $descr = "$project " .
7507                         ($format eq 'rss' ? 'RSS' : 'Atom') .
7508                         " feed";
7509        }
7510        my $owner = git_get_project_owner($project);
7511        $owner = esc_html($owner);
7512
7513        #header
7514        my $alt_url;
7515        if (defined $file_name) {
7516                $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
7517        } elsif (defined $hash) {
7518                $alt_url = href(-full=>1, action=>"log", hash=>$hash);
7519        } else {
7520                $alt_url = href(-full=>1, action=>"summary");
7521        }
7522        print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
7523        if ($format eq 'rss') {
7524                print <<XML;
7525<rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
7526<channel>
7527XML
7528                print "<title>$title</title>\n" .
7529                      "<link>$alt_url</link>\n" .
7530                      "<description>$descr</description>\n" .
7531                      "<language>en</language>\n" .
7532                      # project owner is responsible for 'editorial' content
7533                      "<managingEditor>$owner</managingEditor>\n";
7534                if (defined $logo || defined $favicon) {
7535                        # prefer the logo to the favicon, since RSS
7536                        # doesn't allow both
7537                        my $img = esc_url($logo || $favicon);
7538                        print "<image>\n" .
7539                              "<url>$img</url>\n" .
7540                              "<title>$title</title>\n" .
7541                              "<link>$alt_url</link>\n" .
7542                              "</image>\n";
7543                }
7544                if (%latest_date) {
7545                        print "<pubDate>$latest_date{'rfc2822'}</pubDate>\n";
7546                        print "<lastBuildDate>$latest_date{'rfc2822'}</lastBuildDate>\n";
7547                }
7548                print "<generator>gitweb v.$version/$git_version</generator>\n";
7549        } elsif ($format eq 'atom') {
7550                print <<XML;
7551<feed xmlns="http://www.w3.org/2005/Atom">
7552XML
7553                print "<title>$title</title>\n" .
7554                      "<subtitle>$descr</subtitle>\n" .
7555                      '<link rel="alternate" type="text/html" href="' .
7556                      $alt_url . '" />' . "\n" .
7557                      '<link rel="self" type="' . $content_type . '" href="' .
7558                      $cgi->self_url() . '" />' . "\n" .
7559                      "<id>" . href(-full=>1) . "</id>\n" .
7560                      # use project owner for feed author
7561                      "<author><name>$owner</name></author>\n";
7562                if (defined $favicon) {
7563                        print "<icon>" . esc_url($favicon) . "</icon>\n";
7564                }
7565                if (defined $logo) {
7566                        # not twice as wide as tall: 72 x 27 pixels
7567                        print "<logo>" . esc_url($logo) . "</logo>\n";
7568                }
7569                if (! %latest_date) {
7570                        # dummy date to keep the feed valid until commits trickle in:
7571                        print "<updated>1970-01-01T00:00:00Z</updated>\n";
7572                } else {
7573                        print "<updated>$latest_date{'iso-8601'}</updated>\n";
7574                }
7575                print "<generator version='$version/$git_version'>gitweb</generator>\n";
7576        }
7577
7578        # contents
7579        for (my $i = 0; $i <= $#commitlist; $i++) {
7580                my %co = %{$commitlist[$i]};
7581                my $commit = $co{'id'};
7582                # we read 150, we always show 30 and the ones more recent than 48 hours
7583                if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
7584                        last;
7585                }
7586                my %cd = parse_date($co{'author_epoch'}, $co{'author_tz'});
7587
7588                # get list of changed files
7589                open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
7590                        $co{'parent'} || "--root",
7591                        $co{'id'}, "--", (defined $file_name ? $file_name : ())
7592                        or next;
7593                my @difftree = map { chomp; $_ } <$fd>;
7594                close $fd
7595                        or next;
7596
7597                # print element (entry, item)
7598                my $co_url = href(-full=>1, action=>"commitdiff", hash=>$commit);
7599                if ($format eq 'rss') {
7600                        print "<item>\n" .
7601                              "<title>" . esc_html($co{'title'}) . "</title>\n" .
7602                              "<author>" . esc_html($co{'author'}) . "</author>\n" .
7603                              "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
7604                              "<guid isPermaLink=\"true\">$co_url</guid>\n" .
7605                              "<link>$co_url</link>\n" .
7606                              "<description>" . esc_html($co{'title'}) . "</description>\n" .
7607                              "<content:encoded>" .
7608                              "<![CDATA[\n";
7609                } elsif ($format eq 'atom') {
7610                        print "<entry>\n" .
7611                              "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
7612                              "<updated>$cd{'iso-8601'}</updated>\n" .
7613                              "<author>\n" .
7614                              "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
7615                        if ($co{'author_email'}) {
7616                                print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
7617                        }
7618                        print "</author>\n" .
7619                              # use committer for contributor
7620                              "<contributor>\n" .
7621                              "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
7622                        if ($co{'committer_email'}) {
7623                                print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
7624                        }
7625                        print "</contributor>\n" .
7626                              "<published>$cd{'iso-8601'}</published>\n" .
7627                              "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
7628                              "<id>$co_url</id>\n" .
7629                              "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
7630                              "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
7631                }
7632                my $comment = $co{'comment'};
7633                print "<pre>\n";
7634                foreach my $line (@$comment) {
7635                        $line = esc_html($line);
7636                        print "$line\n";
7637                }
7638                print "</pre><ul>\n";
7639                foreach my $difftree_line (@difftree) {
7640                        my %difftree = parse_difftree_raw_line($difftree_line);
7641                        next if !$difftree{'from_id'};
7642
7643                        my $file = $difftree{'file'} || $difftree{'to_file'};
7644
7645                        print "<li>" .
7646                              "[" .
7647                              $cgi->a({-href => href(-full=>1, action=>"blobdiff",
7648                                                     hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
7649                                                     hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
7650                                                     file_name=>$file, file_parent=>$difftree{'from_file'}),
7651                                      -title => "diff"}, 'D');
7652                        if ($have_blame) {
7653                                print $cgi->a({-href => href(-full=>1, action=>"blame",
7654                                                             file_name=>$file, hash_base=>$commit),
7655                                              -title => "blame"}, 'B');
7656                        }
7657                        # if this is not a feed of a file history
7658                        if (!defined $file_name || $file_name ne $file) {
7659                                print $cgi->a({-href => href(-full=>1, action=>"history",
7660                                                             file_name=>$file, hash=>$commit),
7661                                              -title => "history"}, 'H');
7662                        }
7663                        $file = esc_path($file);
7664                        print "] ".
7665                              "$file</li>\n";
7666                }
7667                if ($format eq 'rss') {
7668                        print "</ul>]]>\n" .
7669                              "</content:encoded>\n" .
7670                              "</item>\n";
7671                } elsif ($format eq 'atom') {
7672                        print "</ul>\n</div>\n" .
7673                              "</content>\n" .
7674                              "</entry>\n";
7675                }
7676        }
7677
7678        # end of feed
7679        if ($format eq 'rss') {
7680                print "</channel>\n</rss>\n";
7681        } elsif ($format eq 'atom') {
7682                print "</feed>\n";
7683        }
7684}
7685
7686sub git_rss {
7687        git_feed('rss');
7688}
7689
7690sub git_atom {
7691        git_feed('atom');
7692}
7693
7694sub git_opml {
7695        my @list = git_get_projects_list();
7696        if (!@list) {
7697                die_error(404, "No projects found");
7698        }
7699
7700        print $cgi->header(
7701                -type => 'text/xml',
7702                -charset => 'utf-8',
7703                -content_disposition => 'inline; filename="opml.xml"');
7704
7705        my $title = esc_html($site_name);
7706        print <<XML;
7707<?xml version="1.0" encoding="utf-8"?>
7708<opml version="1.0">
7709<head>
7710  <title>$title OPML Export</title>
7711</head>
7712<body>
7713<outline text="git RSS feeds">
7714XML
7715
7716        foreach my $pr (@list) {
7717                my %proj = %$pr;
7718                my $head = git_get_head_hash($proj{'path'});
7719                if (!defined $head) {
7720                        next;
7721                }
7722                $git_dir = "$projectroot/$proj{'path'}";
7723                my %co = parse_commit($head);
7724                if (!%co) {
7725                        next;
7726                }
7727
7728                my $path = esc_html(chop_str($proj{'path'}, 25, 5));
7729                my $rss  = href('project' => $proj{'path'}, 'action' => 'rss', -full => 1);
7730                my $html = href('project' => $proj{'path'}, 'action' => 'summary', -full => 1);
7731                print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
7732        }
7733        print <<XML;
7734</outline>
7735</body>
7736</opml>
7737XML
7738}