95d278acc84ba7ff698493ab6a495673a236f735
   1#!/usr/bin/perl
   2
   3# gitweb - simple web interface to track changes in git repositories
   4#
   5# (C) 2005-2006, Kay Sievers <kay.sievers@vrfy.org>
   6# (C) 2005, Christian Gierke
   7#
   8# This program is licensed under the GPLv2
   9
  10use 5.008;
  11use strict;
  12use warnings;
  13use CGI qw(:standard :escapeHTML -nosticky);
  14use CGI::Util qw(unescape);
  15use CGI::Carp qw(fatalsToBrowser set_message);
  16use Encode;
  17use Fcntl ':mode';
  18use File::Find qw();
  19use File::Basename qw(basename);
  20use Time::HiRes qw(gettimeofday tv_interval);
  21binmode STDOUT, ':utf8';
  22
  23our $t0 = [ gettimeofday() ];
  24our $number_of_git_cmds = 0;
  25
  26BEGIN {
  27        CGI->compile() if $ENV{'MOD_PERL'};
  28}
  29
  30our $version = "++GIT_VERSION++";
  31
  32our ($my_url, $my_uri, $base_url, $path_info, $home_link);
  33sub evaluate_uri {
  34        our $cgi;
  35
  36        our $my_url = $cgi->url();
  37        our $my_uri = $cgi->url(-absolute => 1);
  38
  39        # Base URL for relative URLs in gitweb ($logo, $favicon, ...),
  40        # needed and used only for URLs with nonempty PATH_INFO
  41        our $base_url = $my_url;
  42
  43        # When the script is used as DirectoryIndex, the URL does not contain the name
  44        # of the script file itself, and $cgi->url() fails to strip PATH_INFO, so we
  45        # have to do it ourselves. We make $path_info global because it's also used
  46        # later on.
  47        #
  48        # Another issue with the script being the DirectoryIndex is that the resulting
  49        # $my_url data is not the full script URL: this is good, because we want
  50        # generated links to keep implying the script name if it wasn't explicitly
  51        # indicated in the URL we're handling, but it means that $my_url cannot be used
  52        # as base URL.
  53        # Therefore, if we needed to strip PATH_INFO, then we know that we have
  54        # to build the base URL ourselves:
  55        our $path_info = $ENV{"PATH_INFO"};
  56        if ($path_info) {
  57                if ($my_url =~ s,\Q$path_info\E$,, &&
  58                    $my_uri =~ s,\Q$path_info\E$,, &&
  59                    defined $ENV{'SCRIPT_NAME'}) {
  60                        $base_url = $cgi->url(-base => 1) . $ENV{'SCRIPT_NAME'};
  61                }
  62        }
  63
  64        # target of the home link on top of all pages
  65        our $home_link = $my_uri || "/";
  66}
  67
  68# core git executable to use
  69# this can just be "git" if your webserver has a sensible PATH
  70our $GIT = "++GIT_BINDIR++/git";
  71
  72# absolute fs-path which will be prepended to the project path
  73#our $projectroot = "/pub/scm";
  74our $projectroot = "++GITWEB_PROJECTROOT++";
  75
  76# fs traversing limit for getting project list
  77# the number is relative to the projectroot
  78our $project_maxdepth = "++GITWEB_PROJECT_MAXDEPTH++";
  79
  80# string of the home link on top of all pages
  81our $home_link_str = "++GITWEB_HOME_LINK_STR++";
  82
  83# name of your site or organization to appear in page titles
  84# replace this with something more descriptive for clearer bookmarks
  85our $site_name = "++GITWEB_SITENAME++"
  86                 || ($ENV{'SERVER_NAME'} || "Untitled") . " Git";
  87
  88# html snippet to include in the <head> section of each page
  89our $site_html_head_string = "++GITWEB_SITE_HTML_HEAD_STRING++";
  90# filename of html text to include at top of each page
  91our $site_header = "++GITWEB_SITE_HEADER++";
  92# html text to include at home page
  93our $home_text = "++GITWEB_HOMETEXT++";
  94# filename of html text to include at bottom of each page
  95our $site_footer = "++GITWEB_SITE_FOOTER++";
  96
  97# URI of stylesheets
  98our @stylesheets = ("++GITWEB_CSS++");
  99# URI of a single stylesheet, which can be overridden in GITWEB_CONFIG.
 100our $stylesheet = undef;
 101# URI of GIT logo (72x27 size)
 102our $logo = "++GITWEB_LOGO++";
 103# URI of GIT favicon, assumed to be image/png type
 104our $favicon = "++GITWEB_FAVICON++";
 105# URI of gitweb.js (JavaScript code for gitweb)
 106our $javascript = "++GITWEB_JS++";
 107
 108# URI and label (title) of GIT logo link
 109#our $logo_url = "http://www.kernel.org/pub/software/scm/git/docs/";
 110#our $logo_label = "git documentation";
 111our $logo_url = "http://git-scm.com/";
 112our $logo_label = "git homepage";
 113
 114# source of projects list
 115our $projects_list = "++GITWEB_LIST++";
 116
 117# the width (in characters) of the projects list "Description" column
 118our $projects_list_description_width = 25;
 119
 120# group projects by category on the projects list
 121# (enabled if this variable evaluates to true)
 122our $projects_list_group_categories = 0;
 123
 124# default category if none specified
 125# (leave the empty string for no category)
 126our $project_list_default_category = "";
 127
 128# default order of projects list
 129# valid values are none, project, descr, owner, and age
 130our $default_projects_order = "project";
 131
 132# show repository only if this file exists
 133# (only effective if this variable evaluates to true)
 134our $export_ok = "++GITWEB_EXPORT_OK++";
 135
 136# show repository only if this subroutine returns true
 137# when given the path to the project, for example:
 138#    sub { return -e "$_[0]/git-daemon-export-ok"; }
 139our $export_auth_hook = undef;
 140
 141# only allow viewing of repositories also shown on the overview page
 142our $strict_export = "++GITWEB_STRICT_EXPORT++";
 143
 144# list of git base URLs used for URL to where fetch project from,
 145# i.e. full URL is "$git_base_url/$project"
 146our @git_base_url_list = grep { $_ ne '' } ("++GITWEB_BASE_URL++");
 147
 148# default blob_plain mimetype and default charset for text/plain blob
 149our $default_blob_plain_mimetype = 'text/plain';
 150our $default_text_plain_charset  = undef;
 151
 152# file to use for guessing MIME types before trying /etc/mime.types
 153# (relative to the current git repository)
 154our $mimetypes_file = undef;
 155
 156# assume this charset if line contains non-UTF-8 characters;
 157# it should be valid encoding (see Encoding::Supported(3pm) for list),
 158# for which encoding all byte sequences are valid, for example
 159# 'iso-8859-1' aka 'latin1' (it is decoded without checking, so it
 160# could be even 'utf-8' for the old behavior)
 161our $fallback_encoding = 'latin1';
 162
 163# rename detection options for git-diff and git-diff-tree
 164# - default is '-M', with the cost proportional to
 165#   (number of removed files) * (number of new files).
 166# - more costly is '-C' (which implies '-M'), with the cost proportional to
 167#   (number of changed files + number of removed files) * (number of new files)
 168# - even more costly is '-C', '--find-copies-harder' with cost
 169#   (number of files in the original tree) * (number of new files)
 170# - one might want to include '-B' option, e.g. '-B', '-M'
 171our @diff_opts = ('-M'); # taken from git_commit
 172
 173# Disables features that would allow repository owners to inject script into
 174# the gitweb domain.
 175our $prevent_xss = 0;
 176
 177# Path to the highlight executable to use (must be the one from
 178# http://www.andre-simon.de due to assumptions about parameters and output).
 179# Useful if highlight is not installed on your webserver's PATH.
 180# [Default: highlight]
 181our $highlight_bin = "++HIGHLIGHT_BIN++";
 182
 183# information about snapshot formats that gitweb is capable of serving
 184our %known_snapshot_formats = (
 185        # name => {
 186        #       'display' => display name,
 187        #       'type' => mime type,
 188        #       'suffix' => filename suffix,
 189        #       'format' => --format for git-archive,
 190        #       'compressor' => [compressor command and arguments]
 191        #                       (array reference, optional)
 192        #       'disabled' => boolean (optional)}
 193        #
 194        'tgz' => {
 195                'display' => 'tar.gz',
 196                'type' => 'application/x-gzip',
 197                'suffix' => '.tar.gz',
 198                'format' => 'tar',
 199                'compressor' => ['gzip', '-n']},
 200
 201        'tbz2' => {
 202                'display' => 'tar.bz2',
 203                'type' => 'application/x-bzip2',
 204                'suffix' => '.tar.bz2',
 205                'format' => 'tar',
 206                'compressor' => ['bzip2']},
 207
 208        'txz' => {
 209                'display' => 'tar.xz',
 210                'type' => 'application/x-xz',
 211                'suffix' => '.tar.xz',
 212                'format' => 'tar',
 213                'compressor' => ['xz'],
 214                'disabled' => 1},
 215
 216        'zip' => {
 217                'display' => 'zip',
 218                'type' => 'application/x-zip',
 219                'suffix' => '.zip',
 220                'format' => 'zip'},
 221);
 222
 223# Aliases so we understand old gitweb.snapshot values in repository
 224# configuration.
 225our %known_snapshot_format_aliases = (
 226        'gzip'  => 'tgz',
 227        'bzip2' => 'tbz2',
 228        'xz'    => 'txz',
 229
 230        # backward compatibility: legacy gitweb config support
 231        'x-gzip' => undef, 'gz' => undef,
 232        'x-bzip2' => undef, 'bz2' => undef,
 233        'x-zip' => undef, '' => undef,
 234);
 235
 236# Pixel sizes for icons and avatars. If the default font sizes or lineheights
 237# are changed, it may be appropriate to change these values too via
 238# $GITWEB_CONFIG.
 239our %avatar_size = (
 240        'default' => 16,
 241        'double'  => 32
 242);
 243
 244# Used to set the maximum load that we will still respond to gitweb queries.
 245# If server load exceed this value then return "503 server busy" error.
 246# If gitweb cannot determined server load, it is taken to be 0.
 247# Leave it undefined (or set to 'undef') to turn off load checking.
 248our $maxload = 300;
 249
 250# configuration for 'highlight' (http://www.andre-simon.de/)
 251# match by basename
 252our %highlight_basename = (
 253        #'Program' => 'py',
 254        #'Library' => 'py',
 255        'SConstruct' => 'py', # SCons equivalent of Makefile
 256        'Makefile' => 'make',
 257);
 258# match by extension
 259our %highlight_ext = (
 260        # main extensions, defining name of syntax;
 261        # see files in /usr/share/highlight/langDefs/ directory
 262        map { $_ => $_ }
 263                qw(py c cpp rb java css php sh pl js tex bib xml awk bat ini spec tcl sql make),
 264        # alternate extensions, see /etc/highlight/filetypes.conf
 265        'h' => 'c',
 266        map { $_ => 'sh'  } qw(bash zsh ksh),
 267        map { $_ => 'cpp' } qw(cxx c++ cc),
 268        map { $_ => 'php' } qw(php3 php4 php5 phps),
 269        map { $_ => 'pl'  } qw(perl pm), # perhaps also 'cgi'
 270        map { $_ => 'make'} qw(mak mk),
 271        map { $_ => 'xml' } qw(xhtml html htm),
 272);
 273
 274# You define site-wide feature defaults here; override them with
 275# $GITWEB_CONFIG as necessary.
 276our %feature = (
 277        # feature => {
 278        #       'sub' => feature-sub (subroutine),
 279        #       'override' => allow-override (boolean),
 280        #       'default' => [ default options...] (array reference)}
 281        #
 282        # if feature is overridable (it means that allow-override has true value),
 283        # then feature-sub will be called with default options as parameters;
 284        # return value of feature-sub indicates if to enable specified feature
 285        #
 286        # if there is no 'sub' key (no feature-sub), then feature cannot be
 287        # overridden
 288        #
 289        # use gitweb_get_feature(<feature>) to retrieve the <feature> value
 290        # (an array) or gitweb_check_feature(<feature>) to check if <feature>
 291        # is enabled
 292
 293        # Enable the 'blame' blob view, showing the last commit that modified
 294        # each line in the file. This can be very CPU-intensive.
 295
 296        # To enable system wide have in $GITWEB_CONFIG
 297        # $feature{'blame'}{'default'} = [1];
 298        # To have project specific config enable override in $GITWEB_CONFIG
 299        # $feature{'blame'}{'override'} = 1;
 300        # and in project config gitweb.blame = 0|1;
 301        'blame' => {
 302                'sub' => sub { feature_bool('blame', @_) },
 303                'override' => 0,
 304                'default' => [0]},
 305
 306        # Enable the 'snapshot' link, providing a compressed archive of any
 307        # tree. This can potentially generate high traffic if you have large
 308        # project.
 309
 310        # Value is a list of formats defined in %known_snapshot_formats that
 311        # you wish to offer.
 312        # To disable system wide have in $GITWEB_CONFIG
 313        # $feature{'snapshot'}{'default'} = [];
 314        # To have project specific config enable override in $GITWEB_CONFIG
 315        # $feature{'snapshot'}{'override'} = 1;
 316        # and in project config, a comma-separated list of formats or "none"
 317        # to disable.  Example: gitweb.snapshot = tbz2,zip;
 318        'snapshot' => {
 319                'sub' => \&feature_snapshot,
 320                'override' => 0,
 321                'default' => ['tgz']},
 322
 323        # Enable text search, which will list the commits which match author,
 324        # committer or commit text to a given string.  Enabled by default.
 325        # Project specific override is not supported.
 326        #
 327        # Note that this controls all search features, which means that if
 328        # it is disabled, then 'grep' and 'pickaxe' search would also be
 329        # disabled.
 330        'search' => {
 331                'override' => 0,
 332                'default' => [1]},
 333
 334        # Enable grep search, which will list the files in currently selected
 335        # tree containing the given string. Enabled by default. This can be
 336        # potentially CPU-intensive, of course.
 337        # Note that you need to have 'search' feature enabled too.
 338
 339        # To enable system wide have in $GITWEB_CONFIG
 340        # $feature{'grep'}{'default'} = [1];
 341        # To have project specific config enable override in $GITWEB_CONFIG
 342        # $feature{'grep'}{'override'} = 1;
 343        # and in project config gitweb.grep = 0|1;
 344        'grep' => {
 345                'sub' => sub { feature_bool('grep', @_) },
 346                'override' => 0,
 347                'default' => [1]},
 348
 349        # Enable the pickaxe search, which will list the commits that modified
 350        # a given string in a file. This can be practical and quite faster
 351        # alternative to 'blame', but still potentially CPU-intensive.
 352        # Note that you need to have 'search' feature enabled too.
 353
 354        # To enable system wide have in $GITWEB_CONFIG
 355        # $feature{'pickaxe'}{'default'} = [1];
 356        # To have project specific config enable override in $GITWEB_CONFIG
 357        # $feature{'pickaxe'}{'override'} = 1;
 358        # and in project config gitweb.pickaxe = 0|1;
 359        'pickaxe' => {
 360                'sub' => sub { feature_bool('pickaxe', @_) },
 361                'override' => 0,
 362                'default' => [1]},
 363
 364        # Enable showing size of blobs in a 'tree' view, in a separate
 365        # column, similar to what 'ls -l' does.  This cost a bit of IO.
 366
 367        # To disable system wide have in $GITWEB_CONFIG
 368        # $feature{'show-sizes'}{'default'} = [0];
 369        # To have project specific config enable override in $GITWEB_CONFIG
 370        # $feature{'show-sizes'}{'override'} = 1;
 371        # and in project config gitweb.showsizes = 0|1;
 372        'show-sizes' => {
 373                'sub' => sub { feature_bool('showsizes', @_) },
 374                'override' => 0,
 375                'default' => [1]},
 376
 377        # Make gitweb use an alternative format of the URLs which can be
 378        # more readable and natural-looking: project name is embedded
 379        # directly in the path and the query string contains other
 380        # auxiliary information. All gitweb installations recognize
 381        # URL in either format; this configures in which formats gitweb
 382        # generates links.
 383
 384        # To enable system wide have in $GITWEB_CONFIG
 385        # $feature{'pathinfo'}{'default'} = [1];
 386        # Project specific override is not supported.
 387
 388        # Note that you will need to change the default location of CSS,
 389        # favicon, logo and possibly other files to an absolute URL. Also,
 390        # if gitweb.cgi serves as your indexfile, you will need to force
 391        # $my_uri to contain the script name in your $GITWEB_CONFIG.
 392        'pathinfo' => {
 393                'override' => 0,
 394                'default' => [0]},
 395
 396        # Make gitweb consider projects in project root subdirectories
 397        # to be forks of existing projects. Given project $projname.git,
 398        # projects matching $projname/*.git will not be shown in the main
 399        # projects list, instead a '+' mark will be added to $projname
 400        # there and a 'forks' view will be enabled for the project, listing
 401        # all the forks. If project list is taken from a file, forks have
 402        # to be listed after the main project.
 403
 404        # To enable system wide have in $GITWEB_CONFIG
 405        # $feature{'forks'}{'default'} = [1];
 406        # Project specific override is not supported.
 407        'forks' => {
 408                'override' => 0,
 409                'default' => [0]},
 410
 411        # Insert custom links to the action bar of all project pages.
 412        # This enables you mainly to link to third-party scripts integrating
 413        # into gitweb; e.g. git-browser for graphical history representation
 414        # or custom web-based repository administration interface.
 415
 416        # The 'default' value consists of a list of triplets in the form
 417        # (label, link, position) where position is the label after which
 418        # to insert the link and link is a format string where %n expands
 419        # to the project name, %f to the project path within the filesystem,
 420        # %h to the current hash (h gitweb parameter) and %b to the current
 421        # hash base (hb gitweb parameter); %% expands to %.
 422
 423        # To enable system wide have in $GITWEB_CONFIG e.g.
 424        # $feature{'actions'}{'default'} = [('graphiclog',
 425        #       '/git-browser/by-commit.html?r=%n', 'summary')];
 426        # Project specific override is not supported.
 427        'actions' => {
 428                'override' => 0,
 429                'default' => []},
 430
 431        # Allow gitweb scan project content tags of project repository,
 432        # and display the popular Web 2.0-ish "tag cloud" near the projects
 433        # list.  Note that this is something COMPLETELY different from the
 434        # normal Git tags.
 435
 436        # gitweb by itself can show existing tags, but it does not handle
 437        # tagging itself; you need to do it externally, outside gitweb.
 438        # The format is described in git_get_project_ctags() subroutine.
 439        # You may want to install the HTML::TagCloud Perl module to get
 440        # a pretty tag cloud instead of just a list of tags.
 441
 442        # To enable system wide have in $GITWEB_CONFIG
 443        # $feature{'ctags'}{'default'} = [1];
 444        # Project specific override is not supported.
 445
 446        # In the future whether ctags editing is enabled might depend
 447        # on the value, but using 1 should always mean no editing of ctags.
 448        'ctags' => {
 449                'override' => 0,
 450                'default' => [0]},
 451
 452        # The maximum number of patches in a patchset generated in patch
 453        # view. Set this to 0 or undef to disable patch view, or to a
 454        # negative number to remove any limit.
 455
 456        # To disable system wide have in $GITWEB_CONFIG
 457        # $feature{'patches'}{'default'} = [0];
 458        # To have project specific config enable override in $GITWEB_CONFIG
 459        # $feature{'patches'}{'override'} = 1;
 460        # and in project config gitweb.patches = 0|n;
 461        # where n is the maximum number of patches allowed in a patchset.
 462        'patches' => {
 463                'sub' => \&feature_patches,
 464                'override' => 0,
 465                'default' => [16]},
 466
 467        # Avatar support. When this feature is enabled, views such as
 468        # shortlog or commit will display an avatar associated with
 469        # the email of the committer(s) and/or author(s).
 470
 471        # Currently available providers are gravatar and picon.
 472        # If an unknown provider is specified, the feature is disabled.
 473
 474        # Gravatar depends on Digest::MD5.
 475        # Picon currently relies on the indiana.edu database.
 476
 477        # To enable system wide have in $GITWEB_CONFIG
 478        # $feature{'avatar'}{'default'} = ['<provider>'];
 479        # where <provider> is either gravatar or picon.
 480        # To have project specific config enable override in $GITWEB_CONFIG
 481        # $feature{'avatar'}{'override'} = 1;
 482        # and in project config gitweb.avatar = <provider>;
 483        'avatar' => {
 484                'sub' => \&feature_avatar,
 485                'override' => 0,
 486                'default' => ['']},
 487
 488        # Enable displaying how much time and how many git commands
 489        # it took to generate and display page.  Disabled by default.
 490        # Project specific override is not supported.
 491        'timed' => {
 492                'override' => 0,
 493                'default' => [0]},
 494
 495        # Enable turning some links into links to actions which require
 496        # JavaScript to run (like 'blame_incremental').  Not enabled by
 497        # default.  Project specific override is currently not supported.
 498        'javascript-actions' => {
 499                'override' => 0,
 500                'default' => [0]},
 501
 502        # Enable and configure ability to change common timezone for dates
 503        # in gitweb output via JavaScript.  Enabled by default.
 504        # Project specific override is not supported.
 505        'javascript-timezone' => {
 506                'override' => 0,
 507                'default' => [
 508                        'local',     # default timezone: 'utc', 'local', or '(-|+)HHMM' format,
 509                                     # or undef to turn off this feature
 510                        'gitweb_tz', # name of cookie where to store selected timezone
 511                        'datetime',  # CSS class used to mark up dates for manipulation
 512                ]},
 513
 514        # Syntax highlighting support. This is based on Daniel Svensson's
 515        # and Sham Chukoury's work in gitweb-xmms2.git.
 516        # It requires the 'highlight' program present in $PATH,
 517        # and therefore is disabled by default.
 518
 519        # To enable system wide have in $GITWEB_CONFIG
 520        # $feature{'highlight'}{'default'} = [1];
 521
 522        'highlight' => {
 523                'sub' => sub { feature_bool('highlight', @_) },
 524                'override' => 0,
 525                'default' => [0]},
 526
 527        # Enable displaying of remote heads in the heads list
 528
 529        # To enable system wide have in $GITWEB_CONFIG
 530        # $feature{'remote_heads'}{'default'} = [1];
 531        # To have project specific config enable override in $GITWEB_CONFIG
 532        # $feature{'remote_heads'}{'override'} = 1;
 533        # and in project config gitweb.remote_heads = 0|1;
 534        'remote_heads' => {
 535                'sub' => sub { feature_bool('remote_heads', @_) },
 536                'override' => 0,
 537                'default' => [0]},
 538);
 539
 540sub gitweb_get_feature {
 541        my ($name) = @_;
 542        return unless exists $feature{$name};
 543        my ($sub, $override, @defaults) = (
 544                $feature{$name}{'sub'},
 545                $feature{$name}{'override'},
 546                @{$feature{$name}{'default'}});
 547        # project specific override is possible only if we have project
 548        our $git_dir; # global variable, declared later
 549        if (!$override || !defined $git_dir) {
 550                return @defaults;
 551        }
 552        if (!defined $sub) {
 553                warn "feature $name is not overridable";
 554                return @defaults;
 555        }
 556        return $sub->(@defaults);
 557}
 558
 559# A wrapper to check if a given feature is enabled.
 560# With this, you can say
 561#
 562#   my $bool_feat = gitweb_check_feature('bool_feat');
 563#   gitweb_check_feature('bool_feat') or somecode;
 564#
 565# instead of
 566#
 567#   my ($bool_feat) = gitweb_get_feature('bool_feat');
 568#   (gitweb_get_feature('bool_feat'))[0] or somecode;
 569#
 570sub gitweb_check_feature {
 571        return (gitweb_get_feature(@_))[0];
 572}
 573
 574
 575sub feature_bool {
 576        my $key = shift;
 577        my ($val) = git_get_project_config($key, '--bool');
 578
 579        if (!defined $val) {
 580                return ($_[0]);
 581        } elsif ($val eq 'true') {
 582                return (1);
 583        } elsif ($val eq 'false') {
 584                return (0);
 585        }
 586}
 587
 588sub feature_snapshot {
 589        my (@fmts) = @_;
 590
 591        my ($val) = git_get_project_config('snapshot');
 592
 593        if ($val) {
 594                @fmts = ($val eq 'none' ? () : split /\s*[,\s]\s*/, $val);
 595        }
 596
 597        return @fmts;
 598}
 599
 600sub feature_patches {
 601        my @val = (git_get_project_config('patches', '--int'));
 602
 603        if (@val) {
 604                return @val;
 605        }
 606
 607        return ($_[0]);
 608}
 609
 610sub feature_avatar {
 611        my @val = (git_get_project_config('avatar'));
 612
 613        return @val ? @val : @_;
 614}
 615
 616# checking HEAD file with -e is fragile if the repository was
 617# initialized long time ago (i.e. symlink HEAD) and was pack-ref'ed
 618# and then pruned.
 619sub check_head_link {
 620        my ($dir) = @_;
 621        my $headfile = "$dir/HEAD";
 622        return ((-e $headfile) ||
 623                (-l $headfile && readlink($headfile) =~ /^refs\/heads\//));
 624}
 625
 626sub check_export_ok {
 627        my ($dir) = @_;
 628        return (check_head_link($dir) &&
 629                (!$export_ok || -e "$dir/$export_ok") &&
 630                (!$export_auth_hook || $export_auth_hook->($dir)));
 631}
 632
 633# process alternate names for backward compatibility
 634# filter out unsupported (unknown) snapshot formats
 635sub filter_snapshot_fmts {
 636        my @fmts = @_;
 637
 638        @fmts = map {
 639                exists $known_snapshot_format_aliases{$_} ?
 640                       $known_snapshot_format_aliases{$_} : $_} @fmts;
 641        @fmts = grep {
 642                exists $known_snapshot_formats{$_} &&
 643                !$known_snapshot_formats{$_}{'disabled'}} @fmts;
 644}
 645
 646# If it is set to code reference, it is code that it is to be run once per
 647# request, allowing updating configurations that change with each request,
 648# while running other code in config file only once.
 649#
 650# Otherwise, if it is false then gitweb would process config file only once;
 651# if it is true then gitweb config would be run for each request.
 652our $per_request_config = 1;
 653
 654# read and parse gitweb config file given by its parameter.
 655# returns true on success, false on recoverable error, allowing
 656# to chain this subroutine, using first file that exists.
 657# dies on errors during parsing config file, as it is unrecoverable.
 658sub read_config_file {
 659        my $filename = shift;
 660        return unless defined $filename;
 661        # die if there are errors parsing config file
 662        if (-e $filename) {
 663                do $filename;
 664                die $@ if $@;
 665                return 1;
 666        }
 667        return;
 668}
 669
 670our ($GITWEB_CONFIG, $GITWEB_CONFIG_SYSTEM, $GITWEB_CONFIG_COMMON);
 671sub evaluate_gitweb_config {
 672        our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 673        our $GITWEB_CONFIG_SYSTEM = $ENV{'GITWEB_CONFIG_SYSTEM'} || "++GITWEB_CONFIG_SYSTEM++";
 674        our $GITWEB_CONFIG_COMMON = $ENV{'GITWEB_CONFIG_COMMON'} || "++GITWEB_CONFIG_COMMON++";
 675
 676        # Protect agains duplications of file names, to not read config twice.
 677        # Only one of $GITWEB_CONFIG and $GITWEB_CONFIG_SYSTEM is used, so
 678        # there possibility of duplication of filename there doesn't matter.
 679        $GITWEB_CONFIG = ""        if ($GITWEB_CONFIG eq $GITWEB_CONFIG_COMMON);
 680        $GITWEB_CONFIG_SYSTEM = "" if ($GITWEB_CONFIG_SYSTEM eq $GITWEB_CONFIG_COMMON);
 681
 682        # Common system-wide settings for convenience.
 683        # Those settings can be ovverriden by GITWEB_CONFIG or GITWEB_CONFIG_SYSTEM.
 684        read_config_file($GITWEB_CONFIG_COMMON);
 685
 686        # Use first config file that exists.  This means use the per-instance
 687        # GITWEB_CONFIG if exists, otherwise use GITWEB_SYSTEM_CONFIG.
 688        read_config_file($GITWEB_CONFIG) and return;
 689        read_config_file($GITWEB_CONFIG_SYSTEM);
 690}
 691
 692# Get loadavg of system, to compare against $maxload.
 693# Currently it requires '/proc/loadavg' present to get loadavg;
 694# if it is not present it returns 0, which means no load checking.
 695sub get_loadavg {
 696        if( -e '/proc/loadavg' ){
 697                open my $fd, '<', '/proc/loadavg'
 698                        or return 0;
 699                my @load = split(/\s+/, scalar <$fd>);
 700                close $fd;
 701
 702                # The first three columns measure CPU and IO utilization of the last one,
 703                # five, and 10 minute periods.  The fourth column shows the number of
 704                # currently running processes and the total number of processes in the m/n
 705                # format.  The last column displays the last process ID used.
 706                return $load[0] || 0;
 707        }
 708        # additional checks for load average should go here for things that don't export
 709        # /proc/loadavg
 710
 711        return 0;
 712}
 713
 714# version of the core git binary
 715our $git_version;
 716sub evaluate_git_version {
 717        our $git_version = qx("$GIT" --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 718        $number_of_git_cmds++;
 719}
 720
 721sub check_loadavg {
 722        if (defined $maxload && get_loadavg() > $maxload) {
 723                die_error(503, "The load average on the server is too high");
 724        }
 725}
 726
 727# ======================================================================
 728# input validation and dispatch
 729
 730# input parameters can be collected from a variety of sources (presently, CGI
 731# and PATH_INFO), so we define an %input_params hash that collects them all
 732# together during validation: this allows subsequent uses (e.g. href()) to be
 733# agnostic of the parameter origin
 734
 735our %input_params = ();
 736
 737# input parameters are stored with the long parameter name as key. This will
 738# also be used in the href subroutine to convert parameters to their CGI
 739# equivalent, and since the href() usage is the most frequent one, we store
 740# the name -> CGI key mapping here, instead of the reverse.
 741#
 742# XXX: Warning: If you touch this, check the search form for updating,
 743# too.
 744
 745our @cgi_param_mapping = (
 746        project => "p",
 747        action => "a",
 748        file_name => "f",
 749        file_parent => "fp",
 750        hash => "h",
 751        hash_parent => "hp",
 752        hash_base => "hb",
 753        hash_parent_base => "hpb",
 754        page => "pg",
 755        order => "o",
 756        searchtext => "s",
 757        searchtype => "st",
 758        snapshot_format => "sf",
 759        extra_options => "opt",
 760        search_use_regexp => "sr",
 761        ctag => "by_tag",
 762        # this must be last entry (for manipulation from JavaScript)
 763        javascript => "js"
 764);
 765our %cgi_param_mapping = @cgi_param_mapping;
 766
 767# we will also need to know the possible actions, for validation
 768our %actions = (
 769        "blame" => \&git_blame,
 770        "blame_incremental" => \&git_blame_incremental,
 771        "blame_data" => \&git_blame_data,
 772        "blobdiff" => \&git_blobdiff,
 773        "blobdiff_plain" => \&git_blobdiff_plain,
 774        "blob" => \&git_blob,
 775        "blob_plain" => \&git_blob_plain,
 776        "commitdiff" => \&git_commitdiff,
 777        "commitdiff_plain" => \&git_commitdiff_plain,
 778        "commit" => \&git_commit,
 779        "forks" => \&git_forks,
 780        "heads" => \&git_heads,
 781        "history" => \&git_history,
 782        "log" => \&git_log,
 783        "patch" => \&git_patch,
 784        "patches" => \&git_patches,
 785        "remotes" => \&git_remotes,
 786        "rss" => \&git_rss,
 787        "atom" => \&git_atom,
 788        "search" => \&git_search,
 789        "search_help" => \&git_search_help,
 790        "shortlog" => \&git_shortlog,
 791        "summary" => \&git_summary,
 792        "tag" => \&git_tag,
 793        "tags" => \&git_tags,
 794        "tree" => \&git_tree,
 795        "snapshot" => \&git_snapshot,
 796        "object" => \&git_object,
 797        # those below don't need $project
 798        "opml" => \&git_opml,
 799        "project_list" => \&git_project_list,
 800        "project_index" => \&git_project_index,
 801);
 802
 803# finally, we have the hash of allowed extra_options for the commands that
 804# allow them
 805our %allowed_options = (
 806        "--no-merges" => [ qw(rss atom log shortlog history) ],
 807);
 808
 809# fill %input_params with the CGI parameters. All values except for 'opt'
 810# should be single values, but opt can be an array. We should probably
 811# build an array of parameters that can be multi-valued, but since for the time
 812# being it's only this one, we just single it out
 813sub evaluate_query_params {
 814        our $cgi;
 815
 816        while (my ($name, $symbol) = each %cgi_param_mapping) {
 817                if ($symbol eq 'opt') {
 818                        $input_params{$name} = [ $cgi->param($symbol) ];
 819                } else {
 820                        $input_params{$name} = $cgi->param($symbol);
 821                }
 822        }
 823}
 824
 825# now read PATH_INFO and update the parameter list for missing parameters
 826sub evaluate_path_info {
 827        return if defined $input_params{'project'};
 828        return if !$path_info;
 829        $path_info =~ s,^/+,,;
 830        return if !$path_info;
 831
 832        # find which part of PATH_INFO is project
 833        my $project = $path_info;
 834        $project =~ s,/+$,,;
 835        while ($project && !check_head_link("$projectroot/$project")) {
 836                $project =~ s,/*[^/]*$,,;
 837        }
 838        return unless $project;
 839        $input_params{'project'} = $project;
 840
 841        # do not change any parameters if an action is given using the query string
 842        return if $input_params{'action'};
 843        $path_info =~ s,^\Q$project\E/*,,;
 844
 845        # next, check if we have an action
 846        my $action = $path_info;
 847        $action =~ s,/.*$,,;
 848        if (exists $actions{$action}) {
 849                $path_info =~ s,^$action/*,,;
 850                $input_params{'action'} = $action;
 851        }
 852
 853        # list of actions that want hash_base instead of hash, but can have no
 854        # pathname (f) parameter
 855        my @wants_base = (
 856                'tree',
 857                'history',
 858        );
 859
 860        # we want to catch, among others
 861        # [$hash_parent_base[:$file_parent]..]$hash_parent[:$file_name]
 862        my ($parentrefname, $parentpathname, $refname, $pathname) =
 863                ($path_info =~ /^(?:(.+?)(?::(.+))?\.\.)?([^:]+?)?(?::(.+))?$/);
 864
 865        # first, analyze the 'current' part
 866        if (defined $pathname) {
 867                # we got "branch:filename" or "branch:dir/"
 868                # we could use git_get_type(branch:pathname), but:
 869                # - it needs $git_dir
 870                # - it does a git() call
 871                # - the convention of terminating directories with a slash
 872                #   makes it superfluous
 873                # - embedding the action in the PATH_INFO would make it even
 874                #   more superfluous
 875                $pathname =~ s,^/+,,;
 876                if (!$pathname || substr($pathname, -1) eq "/") {
 877                        $input_params{'action'} ||= "tree";
 878                        $pathname =~ s,/$,,;
 879                } else {
 880                        # the default action depends on whether we had parent info
 881                        # or not
 882                        if ($parentrefname) {
 883                                $input_params{'action'} ||= "blobdiff_plain";
 884                        } else {
 885                                $input_params{'action'} ||= "blob_plain";
 886                        }
 887                }
 888                $input_params{'hash_base'} ||= $refname;
 889                $input_params{'file_name'} ||= $pathname;
 890        } elsif (defined $refname) {
 891                # we got "branch". In this case we have to choose if we have to
 892                # set hash or hash_base.
 893                #
 894                # Most of the actions without a pathname only want hash to be
 895                # set, except for the ones specified in @wants_base that want
 896                # hash_base instead. It should also be noted that hand-crafted
 897                # links having 'history' as an action and no pathname or hash
 898                # set will fail, but that happens regardless of PATH_INFO.
 899                if (defined $parentrefname) {
 900                        # if there is parent let the default be 'shortlog' action
 901                        # (for http://git.example.com/repo.git/A..B links); if there
 902                        # is no parent, dispatch will detect type of object and set
 903                        # action appropriately if required (if action is not set)
 904                        $input_params{'action'} ||= "shortlog";
 905                }
 906                if ($input_params{'action'} &&
 907                    grep { $_ eq $input_params{'action'} } @wants_base) {
 908                        $input_params{'hash_base'} ||= $refname;
 909                } else {
 910                        $input_params{'hash'} ||= $refname;
 911                }
 912        }
 913
 914        # next, handle the 'parent' part, if present
 915        if (defined $parentrefname) {
 916                # a missing pathspec defaults to the 'current' filename, allowing e.g.
 917                # someproject/blobdiff/oldrev..newrev:/filename
 918                if ($parentpathname) {
 919                        $parentpathname =~ s,^/+,,;
 920                        $parentpathname =~ s,/$,,;
 921                        $input_params{'file_parent'} ||= $parentpathname;
 922                } else {
 923                        $input_params{'file_parent'} ||= $input_params{'file_name'};
 924                }
 925                # we assume that hash_parent_base is wanted if a path was specified,
 926                # or if the action wants hash_base instead of hash
 927                if (defined $input_params{'file_parent'} ||
 928                        grep { $_ eq $input_params{'action'} } @wants_base) {
 929                        $input_params{'hash_parent_base'} ||= $parentrefname;
 930                } else {
 931                        $input_params{'hash_parent'} ||= $parentrefname;
 932                }
 933        }
 934
 935        # for the snapshot action, we allow URLs in the form
 936        # $project/snapshot/$hash.ext
 937        # where .ext determines the snapshot and gets removed from the
 938        # passed $refname to provide the $hash.
 939        #
 940        # To be able to tell that $refname includes the format extension, we
 941        # require the following two conditions to be satisfied:
 942        # - the hash input parameter MUST have been set from the $refname part
 943        #   of the URL (i.e. they must be equal)
 944        # - the snapshot format MUST NOT have been defined already (e.g. from
 945        #   CGI parameter sf)
 946        # It's also useless to try any matching unless $refname has a dot,
 947        # so we check for that too
 948        if (defined $input_params{'action'} &&
 949                $input_params{'action'} eq 'snapshot' &&
 950                defined $refname && index($refname, '.') != -1 &&
 951                $refname eq $input_params{'hash'} &&
 952                !defined $input_params{'snapshot_format'}) {
 953                # We loop over the known snapshot formats, checking for
 954                # extensions. Allowed extensions are both the defined suffix
 955                # (which includes the initial dot already) and the snapshot
 956                # format key itself, with a prepended dot
 957                while (my ($fmt, $opt) = each %known_snapshot_formats) {
 958                        my $hash = $refname;
 959                        unless ($hash =~ s/(\Q$opt->{'suffix'}\E|\Q.$fmt\E)$//) {
 960                                next;
 961                        }
 962                        my $sfx = $1;
 963                        # a valid suffix was found, so set the snapshot format
 964                        # and reset the hash parameter
 965                        $input_params{'snapshot_format'} = $fmt;
 966                        $input_params{'hash'} = $hash;
 967                        # we also set the format suffix to the one requested
 968                        # in the URL: this way a request for e.g. .tgz returns
 969                        # a .tgz instead of a .tar.gz
 970                        $known_snapshot_formats{$fmt}{'suffix'} = $sfx;
 971                        last;
 972                }
 973        }
 974}
 975
 976our ($action, $project, $file_name, $file_parent, $hash, $hash_parent, $hash_base,
 977     $hash_parent_base, @extra_options, $page, $searchtype, $search_use_regexp,
 978     $searchtext, $search_regexp);
 979sub evaluate_and_validate_params {
 980        our $action = $input_params{'action'};
 981        if (defined $action) {
 982                if (!validate_action($action)) {
 983                        die_error(400, "Invalid action parameter");
 984                }
 985        }
 986
 987        # parameters which are pathnames
 988        our $project = $input_params{'project'};
 989        if (defined $project) {
 990                if (!validate_project($project)) {
 991                        undef $project;
 992                        die_error(404, "No such project");
 993                }
 994        }
 995
 996        our $file_name = $input_params{'file_name'};
 997        if (defined $file_name) {
 998                if (!validate_pathname($file_name)) {
 999                        die_error(400, "Invalid file parameter");
1000                }
1001        }
1002
1003        our $file_parent = $input_params{'file_parent'};
1004        if (defined $file_parent) {
1005                if (!validate_pathname($file_parent)) {
1006                        die_error(400, "Invalid file parent parameter");
1007                }
1008        }
1009
1010        # parameters which are refnames
1011        our $hash = $input_params{'hash'};
1012        if (defined $hash) {
1013                if (!validate_refname($hash)) {
1014                        die_error(400, "Invalid hash parameter");
1015                }
1016        }
1017
1018        our $hash_parent = $input_params{'hash_parent'};
1019        if (defined $hash_parent) {
1020                if (!validate_refname($hash_parent)) {
1021                        die_error(400, "Invalid hash parent parameter");
1022                }
1023        }
1024
1025        our $hash_base = $input_params{'hash_base'};
1026        if (defined $hash_base) {
1027                if (!validate_refname($hash_base)) {
1028                        die_error(400, "Invalid hash base parameter");
1029                }
1030        }
1031
1032        our @extra_options = @{$input_params{'extra_options'}};
1033        # @extra_options is always defined, since it can only be (currently) set from
1034        # CGI, and $cgi->param() returns the empty array in array context if the param
1035        # is not set
1036        foreach my $opt (@extra_options) {
1037                if (not exists $allowed_options{$opt}) {
1038                        die_error(400, "Invalid option parameter");
1039                }
1040                if (not grep(/^$action$/, @{$allowed_options{$opt}})) {
1041                        die_error(400, "Invalid option parameter for this action");
1042                }
1043        }
1044
1045        our $hash_parent_base = $input_params{'hash_parent_base'};
1046        if (defined $hash_parent_base) {
1047                if (!validate_refname($hash_parent_base)) {
1048                        die_error(400, "Invalid hash parent base parameter");
1049                }
1050        }
1051
1052        # other parameters
1053        our $page = $input_params{'page'};
1054        if (defined $page) {
1055                if ($page =~ m/[^0-9]/) {
1056                        die_error(400, "Invalid page parameter");
1057                }
1058        }
1059
1060        our $searchtype = $input_params{'searchtype'};
1061        if (defined $searchtype) {
1062                if ($searchtype =~ m/[^a-z]/) {
1063                        die_error(400, "Invalid searchtype parameter");
1064                }
1065        }
1066
1067        our $search_use_regexp = $input_params{'search_use_regexp'};
1068
1069        our $searchtext = $input_params{'searchtext'};
1070        our $search_regexp;
1071        if (defined $searchtext) {
1072                if (length($searchtext) < 2) {
1073                        die_error(403, "At least two characters are required for search parameter");
1074                }
1075                $search_regexp = $search_use_regexp ? $searchtext : quotemeta $searchtext;
1076        }
1077}
1078
1079# path to the current git repository
1080our $git_dir;
1081sub evaluate_git_dir {
1082        our $git_dir = "$projectroot/$project" if $project;
1083}
1084
1085our (@snapshot_fmts, $git_avatar);
1086sub configure_gitweb_features {
1087        # list of supported snapshot formats
1088        our @snapshot_fmts = gitweb_get_feature('snapshot');
1089        @snapshot_fmts = filter_snapshot_fmts(@snapshot_fmts);
1090
1091        # check that the avatar feature is set to a known provider name,
1092        # and for each provider check if the dependencies are satisfied.
1093        # if the provider name is invalid or the dependencies are not met,
1094        # reset $git_avatar to the empty string.
1095        our ($git_avatar) = gitweb_get_feature('avatar');
1096        if ($git_avatar eq 'gravatar') {
1097                $git_avatar = '' unless (eval { require Digest::MD5; 1; });
1098        } elsif ($git_avatar eq 'picon') {
1099                # no dependencies
1100        } else {
1101                $git_avatar = '';
1102        }
1103}
1104
1105# custom error handler: 'die <message>' is Internal Server Error
1106sub handle_errors_html {
1107        my $msg = shift; # it is already HTML escaped
1108
1109        # to avoid infinite loop where error occurs in die_error,
1110        # change handler to default handler, disabling handle_errors_html
1111        set_message("Error occured when inside die_error:\n$msg");
1112
1113        # you cannot jump out of die_error when called as error handler;
1114        # the subroutine set via CGI::Carp::set_message is called _after_
1115        # HTTP headers are already written, so it cannot write them itself
1116        die_error(undef, undef, $msg, -error_handler => 1, -no_http_header => 1);
1117}
1118set_message(\&handle_errors_html);
1119
1120# dispatch
1121sub dispatch {
1122        if (!defined $action) {
1123                if (defined $hash) {
1124                        $action = git_get_type($hash);
1125                } elsif (defined $hash_base && defined $file_name) {
1126                        $action = git_get_type("$hash_base:$file_name");
1127                } elsif (defined $project) {
1128                        $action = 'summary';
1129                } else {
1130                        $action = 'project_list';
1131                }
1132        }
1133        if (!defined($actions{$action})) {
1134                die_error(400, "Unknown action");
1135        }
1136        if ($action !~ m/^(?:opml|project_list|project_index)$/ &&
1137            !$project) {
1138                die_error(400, "Project needed");
1139        }
1140        $actions{$action}->();
1141}
1142
1143sub reset_timer {
1144        our $t0 = [ gettimeofday() ]
1145                if defined $t0;
1146        our $number_of_git_cmds = 0;
1147}
1148
1149our $first_request = 1;
1150sub run_request {
1151        reset_timer();
1152
1153        evaluate_uri();
1154        if ($first_request) {
1155                evaluate_gitweb_config();
1156                evaluate_git_version();
1157        }
1158        if ($per_request_config) {
1159                if (ref($per_request_config) eq 'CODE') {
1160                        $per_request_config->();
1161                } elsif (!$first_request) {
1162                        evaluate_gitweb_config();
1163                }
1164        }
1165        check_loadavg();
1166
1167        # $projectroot and $projects_list might be set in gitweb config file
1168        $projects_list ||= $projectroot;
1169
1170        evaluate_query_params();
1171        evaluate_path_info();
1172        evaluate_and_validate_params();
1173        evaluate_git_dir();
1174
1175        configure_gitweb_features();
1176
1177        dispatch();
1178}
1179
1180our $is_last_request = sub { 1 };
1181our ($pre_dispatch_hook, $post_dispatch_hook, $pre_listen_hook);
1182our $CGI = 'CGI';
1183our $cgi;
1184sub configure_as_fcgi {
1185        require CGI::Fast;
1186        our $CGI = 'CGI::Fast';
1187
1188        my $request_number = 0;
1189        # let each child service 100 requests
1190        our $is_last_request = sub { ++$request_number > 100 };
1191}
1192sub evaluate_argv {
1193        my $script_name = $ENV{'SCRIPT_NAME'} || $ENV{'SCRIPT_FILENAME'} || __FILE__;
1194        configure_as_fcgi()
1195                if $script_name =~ /\.fcgi$/;
1196
1197        return unless (@ARGV);
1198
1199        require Getopt::Long;
1200        Getopt::Long::GetOptions(
1201                'fastcgi|fcgi|f' => \&configure_as_fcgi,
1202                'nproc|n=i' => sub {
1203                        my ($arg, $val) = @_;
1204                        return unless eval { require FCGI::ProcManager; 1; };
1205                        my $proc_manager = FCGI::ProcManager->new({
1206                                n_processes => $val,
1207                        });
1208                        our $pre_listen_hook    = sub { $proc_manager->pm_manage()        };
1209                        our $pre_dispatch_hook  = sub { $proc_manager->pm_pre_dispatch()  };
1210                        our $post_dispatch_hook = sub { $proc_manager->pm_post_dispatch() };
1211                },
1212        );
1213}
1214
1215sub run {
1216        evaluate_argv();
1217
1218        $first_request = 1;
1219        $pre_listen_hook->()
1220                if $pre_listen_hook;
1221
1222 REQUEST:
1223        while ($cgi = $CGI->new()) {
1224                $pre_dispatch_hook->()
1225                        if $pre_dispatch_hook;
1226
1227                run_request();
1228
1229                $post_dispatch_hook->()
1230                        if $post_dispatch_hook;
1231                $first_request = 0;
1232
1233                last REQUEST if ($is_last_request->());
1234        }
1235
1236 DONE_GITWEB:
1237        1;
1238}
1239
1240run();
1241
1242if (defined caller) {
1243        # wrapped in a subroutine processing requests,
1244        # e.g. mod_perl with ModPerl::Registry, or PSGI with Plack::App::WrapCGI
1245        return;
1246} else {
1247        # pure CGI script, serving single request
1248        exit;
1249}
1250
1251## ======================================================================
1252## action links
1253
1254# possible values of extra options
1255# -full => 0|1      - use absolute/full URL ($my_uri/$my_url as base)
1256# -replay => 1      - start from a current view (replay with modifications)
1257# -path_info => 0|1 - don't use/use path_info URL (if possible)
1258# -anchor => ANCHOR - add #ANCHOR to end of URL, implies -replay if used alone
1259sub href {
1260        my %params = @_;
1261        # default is to use -absolute url() i.e. $my_uri
1262        my $href = $params{-full} ? $my_url : $my_uri;
1263
1264        # implicit -replay, must be first of implicit params
1265        $params{-replay} = 1 if (keys %params == 1 && $params{-anchor});
1266
1267        $params{'project'} = $project unless exists $params{'project'};
1268
1269        if ($params{-replay}) {
1270                while (my ($name, $symbol) = each %cgi_param_mapping) {
1271                        if (!exists $params{$name}) {
1272                                $params{$name} = $input_params{$name};
1273                        }
1274                }
1275        }
1276
1277        my $use_pathinfo = gitweb_check_feature('pathinfo');
1278        if (defined $params{'project'} &&
1279            (exists $params{-path_info} ? $params{-path_info} : $use_pathinfo)) {
1280                # try to put as many parameters as possible in PATH_INFO:
1281                #   - project name
1282                #   - action
1283                #   - hash_parent or hash_parent_base:/file_parent
1284                #   - hash or hash_base:/filename
1285                #   - the snapshot_format as an appropriate suffix
1286
1287                # When the script is the root DirectoryIndex for the domain,
1288                # $href here would be something like http://gitweb.example.com/
1289                # Thus, we strip any trailing / from $href, to spare us double
1290                # slashes in the final URL
1291                $href =~ s,/$,,;
1292
1293                # Then add the project name, if present
1294                $href .= "/".esc_path_info($params{'project'});
1295                delete $params{'project'};
1296
1297                # since we destructively absorb parameters, we keep this
1298                # boolean that remembers if we're handling a snapshot
1299                my $is_snapshot = $params{'action'} eq 'snapshot';
1300
1301                # Summary just uses the project path URL, any other action is
1302                # added to the URL
1303                if (defined $params{'action'}) {
1304                        $href .= "/".esc_path_info($params{'action'})
1305                                unless $params{'action'} eq 'summary';
1306                        delete $params{'action'};
1307                }
1308
1309                # Next, we put hash_parent_base:/file_parent..hash_base:/file_name,
1310                # stripping nonexistent or useless pieces
1311                $href .= "/" if ($params{'hash_base'} || $params{'hash_parent_base'}
1312                        || $params{'hash_parent'} || $params{'hash'});
1313                if (defined $params{'hash_base'}) {
1314                        if (defined $params{'hash_parent_base'}) {
1315                                $href .= esc_path_info($params{'hash_parent_base'});
1316                                # skip the file_parent if it's the same as the file_name
1317                                if (defined $params{'file_parent'}) {
1318                                        if (defined $params{'file_name'} && $params{'file_parent'} eq $params{'file_name'}) {
1319                                                delete $params{'file_parent'};
1320                                        } elsif ($params{'file_parent'} !~ /\.\./) {
1321                                                $href .= ":/".esc_path_info($params{'file_parent'});
1322                                                delete $params{'file_parent'};
1323                                        }
1324                                }
1325                                $href .= "..";
1326                                delete $params{'hash_parent'};
1327                                delete $params{'hash_parent_base'};
1328                        } elsif (defined $params{'hash_parent'}) {
1329                                $href .= esc_path_info($params{'hash_parent'}). "..";
1330                                delete $params{'hash_parent'};
1331                        }
1332
1333                        $href .= esc_path_info($params{'hash_base'});
1334                        if (defined $params{'file_name'} && $params{'file_name'} !~ /\.\./) {
1335                                $href .= ":/".esc_path_info($params{'file_name'});
1336                                delete $params{'file_name'};
1337                        }
1338                        delete $params{'hash'};
1339                        delete $params{'hash_base'};
1340                } elsif (defined $params{'hash'}) {
1341                        $href .= esc_path_info($params{'hash'});
1342                        delete $params{'hash'};
1343                }
1344
1345                # If the action was a snapshot, we can absorb the
1346                # snapshot_format parameter too
1347                if ($is_snapshot) {
1348                        my $fmt = $params{'snapshot_format'};
1349                        # snapshot_format should always be defined when href()
1350                        # is called, but just in case some code forgets, we
1351                        # fall back to the default
1352                        $fmt ||= $snapshot_fmts[0];
1353                        $href .= $known_snapshot_formats{$fmt}{'suffix'};
1354                        delete $params{'snapshot_format'};
1355                }
1356        }
1357
1358        # now encode the parameters explicitly
1359        my @result = ();
1360        for (my $i = 0; $i < @cgi_param_mapping; $i += 2) {
1361                my ($name, $symbol) = ($cgi_param_mapping[$i], $cgi_param_mapping[$i+1]);
1362                if (defined $params{$name}) {
1363                        if (ref($params{$name}) eq "ARRAY") {
1364                                foreach my $par (@{$params{$name}}) {
1365                                        push @result, $symbol . "=" . esc_param($par);
1366                                }
1367                        } else {
1368                                push @result, $symbol . "=" . esc_param($params{$name});
1369                        }
1370                }
1371        }
1372        $href .= "?" . join(';', @result) if scalar @result;
1373
1374        # final transformation: trailing spaces must be escaped (URI-encoded)
1375        $href =~ s/(\s+)$/CGI::escape($1)/e;
1376
1377        if ($params{-anchor}) {
1378                $href .= "#".esc_param($params{-anchor});
1379        }
1380
1381        return $href;
1382}
1383
1384
1385## ======================================================================
1386## validation, quoting/unquoting and escaping
1387
1388sub validate_action {
1389        my $input = shift || return undef;
1390        return undef unless exists $actions{$input};
1391        return $input;
1392}
1393
1394sub validate_project {
1395        my $input = shift || return undef;
1396        if (!validate_pathname($input) ||
1397                !(-d "$projectroot/$input") ||
1398                !check_export_ok("$projectroot/$input") ||
1399                ($strict_export && !project_in_list($input))) {
1400                return undef;
1401        } else {
1402                return $input;
1403        }
1404}
1405
1406sub validate_pathname {
1407        my $input = shift || return undef;
1408
1409        # no '.' or '..' as elements of path, i.e. no '.' nor '..'
1410        # at the beginning, at the end, and between slashes.
1411        # also this catches doubled slashes
1412        if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
1413                return undef;
1414        }
1415        # no null characters
1416        if ($input =~ m!\0!) {
1417                return undef;
1418        }
1419        return $input;
1420}
1421
1422sub validate_refname {
1423        my $input = shift || return undef;
1424
1425        # textual hashes are O.K.
1426        if ($input =~ m/^[0-9a-fA-F]{40}$/) {
1427                return $input;
1428        }
1429        # it must be correct pathname
1430        $input = validate_pathname($input)
1431                or return undef;
1432        # restrictions on ref name according to git-check-ref-format
1433        if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
1434                return undef;
1435        }
1436        return $input;
1437}
1438
1439# decode sequences of octets in utf8 into Perl's internal form,
1440# which is utf-8 with utf8 flag set if needed.  gitweb writes out
1441# in utf-8 thanks to "binmode STDOUT, ':utf8'" at beginning
1442sub to_utf8 {
1443        my $str = shift;
1444        return undef unless defined $str;
1445        if (utf8::valid($str)) {
1446                utf8::decode($str);
1447                return $str;
1448        } else {
1449                return decode($fallback_encoding, $str, Encode::FB_DEFAULT);
1450        }
1451}
1452
1453# quote unsafe chars, but keep the slash, even when it's not
1454# correct, but quoted slashes look too horrible in bookmarks
1455sub esc_param {
1456        my $str = shift;
1457        return undef unless defined $str;
1458        $str =~ s/([^A-Za-z0-9\-_.~()\/:@ ]+)/CGI::escape($1)/eg;
1459        $str =~ s/ /\+/g;
1460        return $str;
1461}
1462
1463# the quoting rules for path_info fragment are slightly different
1464sub esc_path_info {
1465        my $str = shift;
1466        return undef unless defined $str;
1467
1468        # path_info doesn't treat '+' as space (specially), but '?' must be escaped
1469        $str =~ s/([^A-Za-z0-9\-_.~();\/;:@&= +]+)/CGI::escape($1)/eg;
1470
1471        return $str;
1472}
1473
1474# quote unsafe chars in whole URL, so some characters cannot be quoted
1475sub esc_url {
1476        my $str = shift;
1477        return undef unless defined $str;
1478        $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&= ]+)/CGI::escape($1)/eg;
1479        $str =~ s/ /\+/g;
1480        return $str;
1481}
1482
1483# quote unsafe characters in HTML attributes
1484sub esc_attr {
1485
1486        # for XHTML conformance escaping '"' to '&quot;' is not enough
1487        return esc_html(@_);
1488}
1489
1490# replace invalid utf8 character with SUBSTITUTION sequence
1491sub esc_html {
1492        my $str = shift;
1493        my %opts = @_;
1494
1495        return undef unless defined $str;
1496
1497        $str = to_utf8($str);
1498        $str = $cgi->escapeHTML($str);
1499        if ($opts{'-nbsp'}) {
1500                $str =~ s/ /&nbsp;/g;
1501        }
1502        $str =~ s|([[:cntrl:]])|(($1 ne "\t") ? quot_cec($1) : $1)|eg;
1503        return $str;
1504}
1505
1506# quote control characters and escape filename to HTML
1507sub esc_path {
1508        my $str = shift;
1509        my %opts = @_;
1510
1511        return undef unless defined $str;
1512
1513        $str = to_utf8($str);
1514        $str = $cgi->escapeHTML($str);
1515        if ($opts{'-nbsp'}) {
1516                $str =~ s/ /&nbsp;/g;
1517        }
1518        $str =~ s|([[:cntrl:]])|quot_cec($1)|eg;
1519        return $str;
1520}
1521
1522# Sanitize for use in XHTML + application/xml+xhtm (valid XML 1.0)
1523sub sanitize {
1524        my $str = shift;
1525
1526        return undef unless defined $str;
1527
1528        $str = to_utf8($str);
1529        $str =~ s|([[:cntrl:]])|($1 =~ /[\t\n\r]/ ? $1 : quot_cec($1))|eg;
1530        return $str;
1531}
1532
1533# Make control characters "printable", using character escape codes (CEC)
1534sub quot_cec {
1535        my $cntrl = shift;
1536        my %opts = @_;
1537        my %es = ( # character escape codes, aka escape sequences
1538                "\t" => '\t',   # tab            (HT)
1539                "\n" => '\n',   # line feed      (LF)
1540                "\r" => '\r',   # carrige return (CR)
1541                "\f" => '\f',   # form feed      (FF)
1542                "\b" => '\b',   # backspace      (BS)
1543                "\a" => '\a',   # alarm (bell)   (BEL)
1544                "\e" => '\e',   # escape         (ESC)
1545                "\013" => '\v', # vertical tab   (VT)
1546                "\000" => '\0', # nul character  (NUL)
1547        );
1548        my $chr = ( (exists $es{$cntrl})
1549                    ? $es{$cntrl}
1550                    : sprintf('\%2x', ord($cntrl)) );
1551        if ($opts{-nohtml}) {
1552                return $chr;
1553        } else {
1554                return "<span class=\"cntrl\">$chr</span>";
1555        }
1556}
1557
1558# Alternatively use unicode control pictures codepoints,
1559# Unicode "printable representation" (PR)
1560sub quot_upr {
1561        my $cntrl = shift;
1562        my %opts = @_;
1563
1564        my $chr = sprintf('&#%04d;', 0x2400+ord($cntrl));
1565        if ($opts{-nohtml}) {
1566                return $chr;
1567        } else {
1568                return "<span class=\"cntrl\">$chr</span>";
1569        }
1570}
1571
1572# git may return quoted and escaped filenames
1573sub unquote {
1574        my $str = shift;
1575
1576        sub unq {
1577                my $seq = shift;
1578                my %es = ( # character escape codes, aka escape sequences
1579                        't' => "\t",   # tab            (HT, TAB)
1580                        'n' => "\n",   # newline        (NL)
1581                        'r' => "\r",   # return         (CR)
1582                        'f' => "\f",   # form feed      (FF)
1583                        'b' => "\b",   # backspace      (BS)
1584                        'a' => "\a",   # alarm (bell)   (BEL)
1585                        'e' => "\e",   # escape         (ESC)
1586                        'v' => "\013", # vertical tab   (VT)
1587                );
1588
1589                if ($seq =~ m/^[0-7]{1,3}$/) {
1590                        # octal char sequence
1591                        return chr(oct($seq));
1592                } elsif (exists $es{$seq}) {
1593                        # C escape sequence, aka character escape code
1594                        return $es{$seq};
1595                }
1596                # quoted ordinary character
1597                return $seq;
1598        }
1599
1600        if ($str =~ m/^"(.*)"$/) {
1601                # needs unquoting
1602                $str = $1;
1603                $str =~ s/\\([^0-7]|[0-7]{1,3})/unq($1)/eg;
1604        }
1605        return $str;
1606}
1607
1608# escape tabs (convert tabs to spaces)
1609sub untabify {
1610        my $line = shift;
1611
1612        while ((my $pos = index($line, "\t")) != -1) {
1613                if (my $count = (8 - ($pos % 8))) {
1614                        my $spaces = ' ' x $count;
1615                        $line =~ s/\t/$spaces/;
1616                }
1617        }
1618
1619        return $line;
1620}
1621
1622sub project_in_list {
1623        my $project = shift;
1624        my @list = git_get_projects_list();
1625        return @list && scalar(grep { $_->{'path'} eq $project } @list);
1626}
1627
1628## ----------------------------------------------------------------------
1629## HTML aware string manipulation
1630
1631# Try to chop given string on a word boundary between position
1632# $len and $len+$add_len. If there is no word boundary there,
1633# chop at $len+$add_len. Do not chop if chopped part plus ellipsis
1634# (marking chopped part) would be longer than given string.
1635sub chop_str {
1636        my $str = shift;
1637        my $len = shift;
1638        my $add_len = shift || 10;
1639        my $where = shift || 'right'; # 'left' | 'center' | 'right'
1640
1641        # Make sure perl knows it is utf8 encoded so we don't
1642        # cut in the middle of a utf8 multibyte char.
1643        $str = to_utf8($str);
1644
1645        # allow only $len chars, but don't cut a word if it would fit in $add_len
1646        # if it doesn't fit, cut it if it's still longer than the dots we would add
1647        # remove chopped character entities entirely
1648
1649        # when chopping in the middle, distribute $len into left and right part
1650        # return early if chopping wouldn't make string shorter
1651        if ($where eq 'center') {
1652                return $str if ($len + 5 >= length($str)); # filler is length 5
1653                $len = int($len/2);
1654        } else {
1655                return $str if ($len + 4 >= length($str)); # filler is length 4
1656        }
1657
1658        # regexps: ending and beginning with word part up to $add_len
1659        my $endre = qr/.{$len}\w{0,$add_len}/;
1660        my $begre = qr/\w{0,$add_len}.{$len}/;
1661
1662        if ($where eq 'left') {
1663                $str =~ m/^(.*?)($begre)$/;
1664                my ($lead, $body) = ($1, $2);
1665                if (length($lead) > 4) {
1666                        $lead = " ...";
1667                }
1668                return "$lead$body";
1669
1670        } elsif ($where eq 'center') {
1671                $str =~ m/^($endre)(.*)$/;
1672                my ($left, $str)  = ($1, $2);
1673                $str =~ m/^(.*?)($begre)$/;
1674                my ($mid, $right) = ($1, $2);
1675                if (length($mid) > 5) {
1676                        $mid = " ... ";
1677                }
1678                return "$left$mid$right";
1679
1680        } else {
1681                $str =~ m/^($endre)(.*)$/;
1682                my $body = $1;
1683                my $tail = $2;
1684                if (length($tail) > 4) {
1685                        $tail = "... ";
1686                }
1687                return "$body$tail";
1688        }
1689}
1690
1691# takes the same arguments as chop_str, but also wraps a <span> around the
1692# result with a title attribute if it does get chopped. Additionally, the
1693# string is HTML-escaped.
1694sub chop_and_escape_str {
1695        my ($str) = @_;
1696
1697        my $chopped = chop_str(@_);
1698        if ($chopped eq $str) {
1699                return esc_html($chopped);
1700        } else {
1701                $str =~ s/[[:cntrl:]]/?/g;
1702                return $cgi->span({-title=>$str}, esc_html($chopped));
1703        }
1704}
1705
1706## ----------------------------------------------------------------------
1707## functions returning short strings
1708
1709# CSS class for given age value (in seconds)
1710sub age_class {
1711        my $age = shift;
1712
1713        if (!defined $age) {
1714                return "noage";
1715        } elsif ($age < 60*60*2) {
1716                return "age0";
1717        } elsif ($age < 60*60*24*2) {
1718                return "age1";
1719        } else {
1720                return "age2";
1721        }
1722}
1723
1724# convert age in seconds to "nn units ago" string
1725sub age_string {
1726        my $age = shift;
1727        my $age_str;
1728
1729        if ($age > 60*60*24*365*2) {
1730                $age_str = (int $age/60/60/24/365);
1731                $age_str .= " years ago";
1732        } elsif ($age > 60*60*24*(365/12)*2) {
1733                $age_str = int $age/60/60/24/(365/12);
1734                $age_str .= " months ago";
1735        } elsif ($age > 60*60*24*7*2) {
1736                $age_str = int $age/60/60/24/7;
1737                $age_str .= " weeks ago";
1738        } elsif ($age > 60*60*24*2) {
1739                $age_str = int $age/60/60/24;
1740                $age_str .= " days ago";
1741        } elsif ($age > 60*60*2) {
1742                $age_str = int $age/60/60;
1743                $age_str .= " hours ago";
1744        } elsif ($age > 60*2) {
1745                $age_str = int $age/60;
1746                $age_str .= " min ago";
1747        } elsif ($age > 2) {
1748                $age_str = int $age;
1749                $age_str .= " sec ago";
1750        } else {
1751                $age_str .= " right now";
1752        }
1753        return $age_str;
1754}
1755
1756use constant {
1757        S_IFINVALID => 0030000,
1758        S_IFGITLINK => 0160000,
1759};
1760
1761# submodule/subproject, a commit object reference
1762sub S_ISGITLINK {
1763        my $mode = shift;
1764
1765        return (($mode & S_IFMT) == S_IFGITLINK)
1766}
1767
1768# convert file mode in octal to symbolic file mode string
1769sub mode_str {
1770        my $mode = oct shift;
1771
1772        if (S_ISGITLINK($mode)) {
1773                return 'm---------';
1774        } elsif (S_ISDIR($mode & S_IFMT)) {
1775                return 'drwxr-xr-x';
1776        } elsif (S_ISLNK($mode)) {
1777                return 'lrwxrwxrwx';
1778        } elsif (S_ISREG($mode)) {
1779                # git cares only about the executable bit
1780                if ($mode & S_IXUSR) {
1781                        return '-rwxr-xr-x';
1782                } else {
1783                        return '-rw-r--r--';
1784                };
1785        } else {
1786                return '----------';
1787        }
1788}
1789
1790# convert file mode in octal to file type string
1791sub file_type {
1792        my $mode = shift;
1793
1794        if ($mode !~ m/^[0-7]+$/) {
1795                return $mode;
1796        } else {
1797                $mode = oct $mode;
1798        }
1799
1800        if (S_ISGITLINK($mode)) {
1801                return "submodule";
1802        } elsif (S_ISDIR($mode & S_IFMT)) {
1803                return "directory";
1804        } elsif (S_ISLNK($mode)) {
1805                return "symlink";
1806        } elsif (S_ISREG($mode)) {
1807                return "file";
1808        } else {
1809                return "unknown";
1810        }
1811}
1812
1813# convert file mode in octal to file type description string
1814sub file_type_long {
1815        my $mode = shift;
1816
1817        if ($mode !~ m/^[0-7]+$/) {
1818                return $mode;
1819        } else {
1820                $mode = oct $mode;
1821        }
1822
1823        if (S_ISGITLINK($mode)) {
1824                return "submodule";
1825        } elsif (S_ISDIR($mode & S_IFMT)) {
1826                return "directory";
1827        } elsif (S_ISLNK($mode)) {
1828                return "symlink";
1829        } elsif (S_ISREG($mode)) {
1830                if ($mode & S_IXUSR) {
1831                        return "executable";
1832                } else {
1833                        return "file";
1834                };
1835        } else {
1836                return "unknown";
1837        }
1838}
1839
1840
1841## ----------------------------------------------------------------------
1842## functions returning short HTML fragments, or transforming HTML fragments
1843## which don't belong to other sections
1844
1845# format line of commit message.
1846sub format_log_line_html {
1847        my $line = shift;
1848
1849        $line = esc_html($line, -nbsp=>1);
1850        $line =~ s{\b([0-9a-fA-F]{8,40})\b}{
1851                $cgi->a({-href => href(action=>"object", hash=>$1),
1852                                        -class => "text"}, $1);
1853        }eg;
1854
1855        return $line;
1856}
1857
1858# format marker of refs pointing to given object
1859
1860# the destination action is chosen based on object type and current context:
1861# - for annotated tags, we choose the tag view unless it's the current view
1862#   already, in which case we go to shortlog view
1863# - for other refs, we keep the current view if we're in history, shortlog or
1864#   log view, and select shortlog otherwise
1865sub format_ref_marker {
1866        my ($refs, $id) = @_;
1867        my $markers = '';
1868
1869        if (defined $refs->{$id}) {
1870                foreach my $ref (@{$refs->{$id}}) {
1871                        # this code exploits the fact that non-lightweight tags are the
1872                        # only indirect objects, and that they are the only objects for which
1873                        # we want to use tag instead of shortlog as action
1874                        my ($type, $name) = qw();
1875                        my $indirect = ($ref =~ s/\^\{\}$//);
1876                        # e.g. tags/v2.6.11 or heads/next
1877                        if ($ref =~ m!^(.*?)s?/(.*)$!) {
1878                                $type = $1;
1879                                $name = $2;
1880                        } else {
1881                                $type = "ref";
1882                                $name = $ref;
1883                        }
1884
1885                        my $class = $type;
1886                        $class .= " indirect" if $indirect;
1887
1888                        my $dest_action = "shortlog";
1889
1890                        if ($indirect) {
1891                                $dest_action = "tag" unless $action eq "tag";
1892                        } elsif ($action =~ /^(history|(short)?log)$/) {
1893                                $dest_action = $action;
1894                        }
1895
1896                        my $dest = "";
1897                        $dest .= "refs/" unless $ref =~ m!^refs/!;
1898                        $dest .= $ref;
1899
1900                        my $link = $cgi->a({
1901                                -href => href(
1902                                        action=>$dest_action,
1903                                        hash=>$dest
1904                                )}, $name);
1905
1906                        $markers .= " <span class=\"".esc_attr($class)."\" title=\"".esc_attr($ref)."\">" .
1907                                $link . "</span>";
1908                }
1909        }
1910
1911        if ($markers) {
1912                return ' <span class="refs">'. $markers . '</span>';
1913        } else {
1914                return "";
1915        }
1916}
1917
1918# format, perhaps shortened and with markers, title line
1919sub format_subject_html {
1920        my ($long, $short, $href, $extra) = @_;
1921        $extra = '' unless defined($extra);
1922
1923        if (length($short) < length($long)) {
1924                $long =~ s/[[:cntrl:]]/?/g;
1925                return $cgi->a({-href => $href, -class => "list subject",
1926                                -title => to_utf8($long)},
1927                       esc_html($short)) . $extra;
1928        } else {
1929                return $cgi->a({-href => $href, -class => "list subject"},
1930                       esc_html($long)) . $extra;
1931        }
1932}
1933
1934# Rather than recomputing the url for an email multiple times, we cache it
1935# after the first hit. This gives a visible benefit in views where the avatar
1936# for the same email is used repeatedly (e.g. shortlog).
1937# The cache is shared by all avatar engines (currently gravatar only), which
1938# are free to use it as preferred. Since only one avatar engine is used for any
1939# given page, there's no risk for cache conflicts.
1940our %avatar_cache = ();
1941
1942# Compute the picon url for a given email, by using the picon search service over at
1943# http://www.cs.indiana.edu/picons/search.html
1944sub picon_url {
1945        my $email = lc shift;
1946        if (!$avatar_cache{$email}) {
1947                my ($user, $domain) = split('@', $email);
1948                $avatar_cache{$email} =
1949                        "http://www.cs.indiana.edu/cgi-pub/kinzler/piconsearch.cgi/" .
1950                        "$domain/$user/" .
1951                        "users+domains+unknown/up/single";
1952        }
1953        return $avatar_cache{$email};
1954}
1955
1956# Compute the gravatar url for a given email, if it's not in the cache already.
1957# Gravatar stores only the part of the URL before the size, since that's the
1958# one computationally more expensive. This also allows reuse of the cache for
1959# different sizes (for this particular engine).
1960sub gravatar_url {
1961        my $email = lc shift;
1962        my $size = shift;
1963        $avatar_cache{$email} ||=
1964                "http://www.gravatar.com/avatar/" .
1965                        Digest::MD5::md5_hex($email) . "?s=";
1966        return $avatar_cache{$email} . $size;
1967}
1968
1969# Insert an avatar for the given $email at the given $size if the feature
1970# is enabled.
1971sub git_get_avatar {
1972        my ($email, %opts) = @_;
1973        my $pre_white  = ($opts{-pad_before} ? "&nbsp;" : "");
1974        my $post_white = ($opts{-pad_after}  ? "&nbsp;" : "");
1975        $opts{-size} ||= 'default';
1976        my $size = $avatar_size{$opts{-size}} || $avatar_size{'default'};
1977        my $url = "";
1978        if ($git_avatar eq 'gravatar') {
1979                $url = gravatar_url($email, $size);
1980        } elsif ($git_avatar eq 'picon') {
1981                $url = picon_url($email);
1982        }
1983        # Other providers can be added by extending the if chain, defining $url
1984        # as needed. If no variant puts something in $url, we assume avatars
1985        # are completely disabled/unavailable.
1986        if ($url) {
1987                return $pre_white .
1988                       "<img width=\"$size\" " .
1989                            "class=\"avatar\" " .
1990                            "src=\"".esc_url($url)."\" " .
1991                            "alt=\"\" " .
1992                       "/>" . $post_white;
1993        } else {
1994                return "";
1995        }
1996}
1997
1998sub format_search_author {
1999        my ($author, $searchtype, $displaytext) = @_;
2000        my $have_search = gitweb_check_feature('search');
2001
2002        if ($have_search) {
2003                my $performed = "";
2004                if ($searchtype eq 'author') {
2005                        $performed = "authored";
2006                } elsif ($searchtype eq 'committer') {
2007                        $performed = "committed";
2008                }
2009
2010                return $cgi->a({-href => href(action=>"search", hash=>$hash,
2011                                searchtext=>$author,
2012                                searchtype=>$searchtype), class=>"list",
2013                                title=>"Search for commits $performed by $author"},
2014                                $displaytext);
2015
2016        } else {
2017                return $displaytext;
2018        }
2019}
2020
2021# format the author name of the given commit with the given tag
2022# the author name is chopped and escaped according to the other
2023# optional parameters (see chop_str).
2024sub format_author_html {
2025        my $tag = shift;
2026        my $co = shift;
2027        my $author = chop_and_escape_str($co->{'author_name'}, @_);
2028        return "<$tag class=\"author\">" .
2029               format_search_author($co->{'author_name'}, "author",
2030                       git_get_avatar($co->{'author_email'}, -pad_after => 1) .
2031                       $author) .
2032               "</$tag>";
2033}
2034
2035# format git diff header line, i.e. "diff --(git|combined|cc) ..."
2036sub format_git_diff_header_line {
2037        my $line = shift;
2038        my $diffinfo = shift;
2039        my ($from, $to) = @_;
2040
2041        if ($diffinfo->{'nparents'}) {
2042                # combined diff
2043                $line =~ s!^(diff (.*?) )"?.*$!$1!;
2044                if ($to->{'href'}) {
2045                        $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
2046                                         esc_path($to->{'file'}));
2047                } else { # file was deleted (no href)
2048                        $line .= esc_path($to->{'file'});
2049                }
2050        } else {
2051                # "ordinary" diff
2052                $line =~ s!^(diff (.*?) )"?a/.*$!$1!;
2053                if ($from->{'href'}) {
2054                        $line .= $cgi->a({-href => $from->{'href'}, -class => "path"},
2055                                         'a/' . esc_path($from->{'file'}));
2056                } else { # file was added (no href)
2057                        $line .= 'a/' . esc_path($from->{'file'});
2058                }
2059                $line .= ' ';
2060                if ($to->{'href'}) {
2061                        $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
2062                                         'b/' . esc_path($to->{'file'}));
2063                } else { # file was deleted
2064                        $line .= 'b/' . esc_path($to->{'file'});
2065                }
2066        }
2067
2068        return "<div class=\"diff header\">$line</div>\n";
2069}
2070
2071# format extended diff header line, before patch itself
2072sub format_extended_diff_header_line {
2073        my $line = shift;
2074        my $diffinfo = shift;
2075        my ($from, $to) = @_;
2076
2077        # match <path>
2078        if ($line =~ s!^((copy|rename) from ).*$!$1! && $from->{'href'}) {
2079                $line .= $cgi->a({-href=>$from->{'href'}, -class=>"path"},
2080                                       esc_path($from->{'file'}));
2081        }
2082        if ($line =~ s!^((copy|rename) to ).*$!$1! && $to->{'href'}) {
2083                $line .= $cgi->a({-href=>$to->{'href'}, -class=>"path"},
2084                                 esc_path($to->{'file'}));
2085        }
2086        # match single <mode>
2087        if ($line =~ m/\s(\d{6})$/) {
2088                $line .= '<span class="info"> (' .
2089                         file_type_long($1) .
2090                         ')</span>';
2091        }
2092        # match <hash>
2093        if ($line =~ m/^index [0-9a-fA-F]{40},[0-9a-fA-F]{40}/) {
2094                # can match only for combined diff
2095                $line = 'index ';
2096                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2097                        if ($from->{'href'}[$i]) {
2098                                $line .= $cgi->a({-href=>$from->{'href'}[$i],
2099                                                  -class=>"hash"},
2100                                                 substr($diffinfo->{'from_id'}[$i],0,7));
2101                        } else {
2102                                $line .= '0' x 7;
2103                        }
2104                        # separator
2105                        $line .= ',' if ($i < $diffinfo->{'nparents'} - 1);
2106                }
2107                $line .= '..';
2108                if ($to->{'href'}) {
2109                        $line .= $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
2110                                         substr($diffinfo->{'to_id'},0,7));
2111                } else {
2112                        $line .= '0' x 7;
2113                }
2114
2115        } elsif ($line =~ m/^index [0-9a-fA-F]{40}..[0-9a-fA-F]{40}/) {
2116                # can match only for ordinary diff
2117                my ($from_link, $to_link);
2118                if ($from->{'href'}) {
2119                        $from_link = $cgi->a({-href=>$from->{'href'}, -class=>"hash"},
2120                                             substr($diffinfo->{'from_id'},0,7));
2121                } else {
2122                        $from_link = '0' x 7;
2123                }
2124                if ($to->{'href'}) {
2125                        $to_link = $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
2126                                           substr($diffinfo->{'to_id'},0,7));
2127                } else {
2128                        $to_link = '0' x 7;
2129                }
2130                my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2131                $line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
2132        }
2133
2134        return $line . "<br/>\n";
2135}
2136
2137# format from-file/to-file diff header
2138sub format_diff_from_to_header {
2139        my ($from_line, $to_line, $diffinfo, $from, $to, @parents) = @_;
2140        my $line;
2141        my $result = '';
2142
2143        $line = $from_line;
2144        #assert($line =~ m/^---/) if DEBUG;
2145        # no extra formatting for "^--- /dev/null"
2146        if (! $diffinfo->{'nparents'}) {
2147                # ordinary (single parent) diff
2148                if ($line =~ m!^--- "?a/!) {
2149                        if ($from->{'href'}) {
2150                                $line = '--- a/' .
2151                                        $cgi->a({-href=>$from->{'href'}, -class=>"path"},
2152                                                esc_path($from->{'file'}));
2153                        } else {
2154                                $line = '--- a/' .
2155                                        esc_path($from->{'file'});
2156                        }
2157                }
2158                $result .= qq!<div class="diff from_file">$line</div>\n!;
2159
2160        } else {
2161                # combined diff (merge commit)
2162                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2163                        if ($from->{'href'}[$i]) {
2164                                $line = '--- ' .
2165                                        $cgi->a({-href=>href(action=>"blobdiff",
2166                                                             hash_parent=>$diffinfo->{'from_id'}[$i],
2167                                                             hash_parent_base=>$parents[$i],
2168                                                             file_parent=>$from->{'file'}[$i],
2169                                                             hash=>$diffinfo->{'to_id'},
2170                                                             hash_base=>$hash,
2171                                                             file_name=>$to->{'file'}),
2172                                                 -class=>"path",
2173                                                 -title=>"diff" . ($i+1)},
2174                                                $i+1) .
2175                                        '/' .
2176                                        $cgi->a({-href=>$from->{'href'}[$i], -class=>"path"},
2177                                                esc_path($from->{'file'}[$i]));
2178                        } else {
2179                                $line = '--- /dev/null';
2180                        }
2181                        $result .= qq!<div class="diff from_file">$line</div>\n!;
2182                }
2183        }
2184
2185        $line = $to_line;
2186        #assert($line =~ m/^\+\+\+/) if DEBUG;
2187        # no extra formatting for "^+++ /dev/null"
2188        if ($line =~ m!^\+\+\+ "?b/!) {
2189                if ($to->{'href'}) {
2190                        $line = '+++ b/' .
2191                                $cgi->a({-href=>$to->{'href'}, -class=>"path"},
2192                                        esc_path($to->{'file'}));
2193                } else {
2194                        $line = '+++ b/' .
2195                                esc_path($to->{'file'});
2196                }
2197        }
2198        $result .= qq!<div class="diff to_file">$line</div>\n!;
2199
2200        return $result;
2201}
2202
2203# create note for patch simplified by combined diff
2204sub format_diff_cc_simplified {
2205        my ($diffinfo, @parents) = @_;
2206        my $result = '';
2207
2208        $result .= "<div class=\"diff header\">" .
2209                   "diff --cc ";
2210        if (!is_deleted($diffinfo)) {
2211                $result .= $cgi->a({-href => href(action=>"blob",
2212                                                  hash_base=>$hash,
2213                                                  hash=>$diffinfo->{'to_id'},
2214                                                  file_name=>$diffinfo->{'to_file'}),
2215                                    -class => "path"},
2216                                   esc_path($diffinfo->{'to_file'}));
2217        } else {
2218                $result .= esc_path($diffinfo->{'to_file'});
2219        }
2220        $result .= "</div>\n" . # class="diff header"
2221                   "<div class=\"diff nodifferences\">" .
2222                   "Simple merge" .
2223                   "</div>\n"; # class="diff nodifferences"
2224
2225        return $result;
2226}
2227
2228sub diff_line_class {
2229        my ($line, $from, $to) = @_;
2230
2231        # ordinary diff
2232        my $num_sign = 1;
2233        # combined diff
2234        if ($from && $to && ref($from->{'href'}) eq "ARRAY") {
2235                $num_sign = scalar @{$from->{'href'}};
2236        }
2237
2238        my @diff_line_classifier = (
2239                { regexp => qr/^\@\@{$num_sign} /, class => "chunk_header"},
2240                { regexp => qr/^\\/,               class => "incomplete"  },
2241                { regexp => qr/^ {$num_sign}/,     class => "ctx" },
2242                # classifier for context must come before classifier add/rem,
2243                # or we would have to use more complicated regexp, for example
2244                # qr/(?= {0,$m}\+)[+ ]{$num_sign}/, where $m = $num_sign - 1;
2245                { regexp => qr/^[+ ]{$num_sign}/,   class => "add" },
2246                { regexp => qr/^[- ]{$num_sign}/,   class => "rem" },
2247        );
2248        for my $clsfy (@diff_line_classifier) {
2249                return $clsfy->{'class'}
2250                        if ($line =~ $clsfy->{'regexp'});
2251        }
2252
2253        # fallback
2254        return "";
2255}
2256
2257# assumes that $from and $to are defined and correctly filled,
2258# and that $line holds a line of chunk header for unified diff
2259sub format_unidiff_chunk_header {
2260        my ($line, $from, $to) = @_;
2261
2262        my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
2263                $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
2264
2265        $from_lines = 0 unless defined $from_lines;
2266        $to_lines   = 0 unless defined $to_lines;
2267
2268        if ($from->{'href'}) {
2269                $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
2270                                     -class=>"list"}, $from_text);
2271        }
2272        if ($to->{'href'}) {
2273                $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
2274                                     -class=>"list"}, $to_text);
2275        }
2276        $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
2277                "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
2278        return $line;
2279}
2280
2281# assumes that $from and $to are defined and correctly filled,
2282# and that $line holds a line of chunk header for combined diff
2283sub format_cc_diff_chunk_header {
2284        my ($line, $from, $to) = @_;
2285
2286        my ($prefix, $ranges, $section) = $line =~ m/^(\@+) (.*?) \@+(.*)$/;
2287        my (@from_text, @from_start, @from_nlines, $to_text, $to_start, $to_nlines);
2288
2289        @from_text = split(' ', $ranges);
2290        for (my $i = 0; $i < @from_text; ++$i) {
2291                ($from_start[$i], $from_nlines[$i]) =
2292                        (split(',', substr($from_text[$i], 1)), 0);
2293        }
2294
2295        $to_text   = pop @from_text;
2296        $to_start  = pop @from_start;
2297        $to_nlines = pop @from_nlines;
2298
2299        $line = "<span class=\"chunk_info\">$prefix ";
2300        for (my $i = 0; $i < @from_text; ++$i) {
2301                if ($from->{'href'}[$i]) {
2302                        $line .= $cgi->a({-href=>"$from->{'href'}[$i]#l$from_start[$i]",
2303                                          -class=>"list"}, $from_text[$i]);
2304                } else {
2305                        $line .= $from_text[$i];
2306                }
2307                $line .= " ";
2308        }
2309        if ($to->{'href'}) {
2310                $line .= $cgi->a({-href=>"$to->{'href'}#l$to_start",
2311                                  -class=>"list"}, $to_text);
2312        } else {
2313                $line .= $to_text;
2314        }
2315        $line .= " $prefix</span>" .
2316                 "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
2317        return $line;
2318}
2319
2320# format patch (diff) line (not to be used for diff headers)
2321sub format_diff_line {
2322        my $line = shift;
2323        my ($from, $to) = @_;
2324
2325        my $diff_class = diff_line_class($line, $from, $to);
2326        my $diff_classes = "diff";
2327        $diff_classes .= " $diff_class" if ($diff_class);
2328
2329        chomp $line;
2330        $line = untabify($line);
2331
2332        if ($from && $to && $line =~ m/^\@{2} /) {
2333                $line = format_unidiff_chunk_header($line, $from, $to);
2334                return "<div class=\"$diff_classes\">$line</div>\n";
2335
2336        } elsif ($from && $to && $line =~ m/^\@{3}/) {
2337                $line = format_cc_diff_chunk_header($line, $from, $to);
2338                return "<div class=\"$diff_classes\">$line</div>\n";
2339
2340        }
2341        return "<div class=\"$diff_classes\">" . esc_html($line, -nbsp=>1) . "</div>\n";
2342}
2343
2344# Generates undef or something like "_snapshot_" or "snapshot (_tbz2_ _zip_)",
2345# linked.  Pass the hash of the tree/commit to snapshot.
2346sub format_snapshot_links {
2347        my ($hash) = @_;
2348        my $num_fmts = @snapshot_fmts;
2349        if ($num_fmts > 1) {
2350                # A parenthesized list of links bearing format names.
2351                # e.g. "snapshot (_tar.gz_ _zip_)"
2352                return "snapshot (" . join(' ', map
2353                        $cgi->a({
2354                                -href => href(
2355                                        action=>"snapshot",
2356                                        hash=>$hash,
2357                                        snapshot_format=>$_
2358                                )
2359                        }, $known_snapshot_formats{$_}{'display'})
2360                , @snapshot_fmts) . ")";
2361        } elsif ($num_fmts == 1) {
2362                # A single "snapshot" link whose tooltip bears the format name.
2363                # i.e. "_snapshot_"
2364                my ($fmt) = @snapshot_fmts;
2365                return
2366                        $cgi->a({
2367                                -href => href(
2368                                        action=>"snapshot",
2369                                        hash=>$hash,
2370                                        snapshot_format=>$fmt
2371                                ),
2372                                -title => "in format: $known_snapshot_formats{$fmt}{'display'}"
2373                        }, "snapshot");
2374        } else { # $num_fmts == 0
2375                return undef;
2376        }
2377}
2378
2379## ......................................................................
2380## functions returning values to be passed, perhaps after some
2381## transformation, to other functions; e.g. returning arguments to href()
2382
2383# returns hash to be passed to href to generate gitweb URL
2384# in -title key it returns description of link
2385sub get_feed_info {
2386        my $format = shift || 'Atom';
2387        my %res = (action => lc($format));
2388
2389        # feed links are possible only for project views
2390        return unless (defined $project);
2391        # some views should link to OPML, or to generic project feed,
2392        # or don't have specific feed yet (so they should use generic)
2393        return if ($action =~ /^(?:tags|heads|forks|tag|search)$/x);
2394
2395        my $branch;
2396        # branches refs uses 'refs/heads/' prefix (fullname) to differentiate
2397        # from tag links; this also makes possible to detect branch links
2398        if ((defined $hash_base && $hash_base =~ m!^refs/heads/(.*)$!) ||
2399            (defined $hash      && $hash      =~ m!^refs/heads/(.*)$!)) {
2400                $branch = $1;
2401        }
2402        # find log type for feed description (title)
2403        my $type = 'log';
2404        if (defined $file_name) {
2405                $type  = "history of $file_name";
2406                $type .= "/" if ($action eq 'tree');
2407                $type .= " on '$branch'" if (defined $branch);
2408        } else {
2409                $type = "log of $branch" if (defined $branch);
2410        }
2411
2412        $res{-title} = $type;
2413        $res{'hash'} = (defined $branch ? "refs/heads/$branch" : undef);
2414        $res{'file_name'} = $file_name;
2415
2416        return %res;
2417}
2418
2419## ----------------------------------------------------------------------
2420## git utility subroutines, invoking git commands
2421
2422# returns path to the core git executable and the --git-dir parameter as list
2423sub git_cmd {
2424        $number_of_git_cmds++;
2425        return $GIT, '--git-dir='.$git_dir;
2426}
2427
2428# quote the given arguments for passing them to the shell
2429# quote_command("command", "arg 1", "arg with ' and ! characters")
2430# => "'command' 'arg 1' 'arg with '\'' and '\!' characters'"
2431# Try to avoid using this function wherever possible.
2432sub quote_command {
2433        return join(' ',
2434                map { my $a = $_; $a =~ s/(['!])/'\\$1'/g; "'$a'" } @_ );
2435}
2436
2437# get HEAD ref of given project as hash
2438sub git_get_head_hash {
2439        return git_get_full_hash(shift, 'HEAD');
2440}
2441
2442sub git_get_full_hash {
2443        return git_get_hash(@_);
2444}
2445
2446sub git_get_short_hash {
2447        return git_get_hash(@_, '--short=7');
2448}
2449
2450sub git_get_hash {
2451        my ($project, $hash, @options) = @_;
2452        my $o_git_dir = $git_dir;
2453        my $retval = undef;
2454        $git_dir = "$projectroot/$project";
2455        if (open my $fd, '-|', git_cmd(), 'rev-parse',
2456            '--verify', '-q', @options, $hash) {
2457                $retval = <$fd>;
2458                chomp $retval if defined $retval;
2459                close $fd;
2460        }
2461        if (defined $o_git_dir) {
2462                $git_dir = $o_git_dir;
2463        }
2464        return $retval;
2465}
2466
2467# get type of given object
2468sub git_get_type {
2469        my $hash = shift;
2470
2471        open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
2472        my $type = <$fd>;
2473        close $fd or return;
2474        chomp $type;
2475        return $type;
2476}
2477
2478# repository configuration
2479our $config_file = '';
2480our %config;
2481
2482# store multiple values for single key as anonymous array reference
2483# single values stored directly in the hash, not as [ <value> ]
2484sub hash_set_multi {
2485        my ($hash, $key, $value) = @_;
2486
2487        if (!exists $hash->{$key}) {
2488                $hash->{$key} = $value;
2489        } elsif (!ref $hash->{$key}) {
2490                $hash->{$key} = [ $hash->{$key}, $value ];
2491        } else {
2492                push @{$hash->{$key}}, $value;
2493        }
2494}
2495
2496# return hash of git project configuration
2497# optionally limited to some section, e.g. 'gitweb'
2498sub git_parse_project_config {
2499        my $section_regexp = shift;
2500        my %config;
2501
2502        local $/ = "\0";
2503
2504        open my $fh, "-|", git_cmd(), "config", '-z', '-l',
2505                or return;
2506
2507        while (my $keyval = <$fh>) {
2508                chomp $keyval;
2509                my ($key, $value) = split(/\n/, $keyval, 2);
2510
2511                hash_set_multi(\%config, $key, $value)
2512                        if (!defined $section_regexp || $key =~ /^(?:$section_regexp)\./o);
2513        }
2514        close $fh;
2515
2516        return %config;
2517}
2518
2519# convert config value to boolean: 'true' or 'false'
2520# no value, number > 0, 'true' and 'yes' values are true
2521# rest of values are treated as false (never as error)
2522sub config_to_bool {
2523        my $val = shift;
2524
2525        return 1 if !defined $val;             # section.key
2526
2527        # strip leading and trailing whitespace
2528        $val =~ s/^\s+//;
2529        $val =~ s/\s+$//;
2530
2531        return (($val =~ /^\d+$/ && $val) ||   # section.key = 1
2532                ($val =~ /^(?:true|yes)$/i));  # section.key = true
2533}
2534
2535# convert config value to simple decimal number
2536# an optional value suffix of 'k', 'm', or 'g' will cause the value
2537# to be multiplied by 1024, 1048576, or 1073741824
2538sub config_to_int {
2539        my $val = shift;
2540
2541        # strip leading and trailing whitespace
2542        $val =~ s/^\s+//;
2543        $val =~ s/\s+$//;
2544
2545        if (my ($num, $unit) = ($val =~ /^([0-9]*)([kmg])$/i)) {
2546                $unit = lc($unit);
2547                # unknown unit is treated as 1
2548                return $num * ($unit eq 'g' ? 1073741824 :
2549                               $unit eq 'm' ?    1048576 :
2550                               $unit eq 'k' ?       1024 : 1);
2551        }
2552        return $val;
2553}
2554
2555# convert config value to array reference, if needed
2556sub config_to_multi {
2557        my $val = shift;
2558
2559        return ref($val) ? $val : (defined($val) ? [ $val ] : []);
2560}
2561
2562sub git_get_project_config {
2563        my ($key, $type) = @_;
2564
2565        return unless defined $git_dir;
2566
2567        # key sanity check
2568        return unless ($key);
2569        # only subsection, if exists, is case sensitive,
2570        # and not lowercased by 'git config -z -l'
2571        if (my ($hi, $mi, $lo) = ($key =~ /^([^.]*)\.(.*)\.([^.]*)$/)) {
2572                $key = join(".", lc($hi), $mi, lc($lo));
2573        } else {
2574                $key = lc($key);
2575        }
2576        $key =~ s/^gitweb\.//;
2577        return if ($key =~ m/\W/);
2578
2579        # type sanity check
2580        if (defined $type) {
2581                $type =~ s/^--//;
2582                $type = undef
2583                        unless ($type eq 'bool' || $type eq 'int');
2584        }
2585
2586        # get config
2587        if (!defined $config_file ||
2588            $config_file ne "$git_dir/config") {
2589                %config = git_parse_project_config('gitweb');
2590                $config_file = "$git_dir/config";
2591        }
2592
2593        # check if config variable (key) exists
2594        return unless exists $config{"gitweb.$key"};
2595
2596        # ensure given type
2597        if (!defined $type) {
2598                return $config{"gitweb.$key"};
2599        } elsif ($type eq 'bool') {
2600                # backward compatibility: 'git config --bool' returns true/false
2601                return config_to_bool($config{"gitweb.$key"}) ? 'true' : 'false';
2602        } elsif ($type eq 'int') {
2603                return config_to_int($config{"gitweb.$key"});
2604        }
2605        return $config{"gitweb.$key"};
2606}
2607
2608# get hash of given path at given ref
2609sub git_get_hash_by_path {
2610        my $base = shift;
2611        my $path = shift || return undef;
2612        my $type = shift;
2613
2614        $path =~ s,/+$,,;
2615
2616        open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
2617                or die_error(500, "Open git-ls-tree failed");
2618        my $line = <$fd>;
2619        close $fd or return undef;
2620
2621        if (!defined $line) {
2622                # there is no tree or hash given by $path at $base
2623                return undef;
2624        }
2625
2626        #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
2627        $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
2628        if (defined $type && $type ne $2) {
2629                # type doesn't match
2630                return undef;
2631        }
2632        return $3;
2633}
2634
2635# get path of entry with given hash at given tree-ish (ref)
2636# used to get 'from' filename for combined diff (merge commit) for renames
2637sub git_get_path_by_hash {
2638        my $base = shift || return;
2639        my $hash = shift || return;
2640
2641        local $/ = "\0";
2642
2643        open my $fd, "-|", git_cmd(), "ls-tree", '-r', '-t', '-z', $base
2644                or return undef;
2645        while (my $line = <$fd>) {
2646                chomp $line;
2647
2648                #'040000 tree 595596a6a9117ddba9fe379b6b012b558bac8423  gitweb'
2649                #'100644 blob e02e90f0429be0d2a69b76571101f20b8f75530f  gitweb/README'
2650                if ($line =~ m/(?:[0-9]+) (?:.+) $hash\t(.+)$/) {
2651                        close $fd;
2652                        return $1;
2653                }
2654        }
2655        close $fd;
2656        return undef;
2657}
2658
2659## ......................................................................
2660## git utility functions, directly accessing git repository
2661
2662# get the value of config variable either from file named as the variable
2663# itself in the repository ($GIT_DIR/$name file), or from gitweb.$name
2664# configuration variable in the repository config file.
2665sub git_get_file_or_project_config {
2666        my ($path, $name) = @_;
2667
2668        $git_dir = "$projectroot/$path";
2669        open my $fd, '<', "$git_dir/$name"
2670                or return git_get_project_config($name);
2671        my $conf = <$fd>;
2672        close $fd;
2673        if (defined $conf) {
2674                chomp $conf;
2675        }
2676        return $conf;
2677}
2678
2679sub git_get_project_description {
2680        my $path = shift;
2681        return git_get_file_or_project_config($path, 'description');
2682}
2683
2684sub git_get_project_category {
2685        my $path = shift;
2686        return git_get_file_or_project_config($path, 'category');
2687}
2688
2689
2690# supported formats:
2691# * $GIT_DIR/ctags/<tagname> file (in 'ctags' subdirectory)
2692#   - if its contents is a number, use it as tag weight,
2693#   - otherwise add a tag with weight 1
2694# * $GIT_DIR/ctags file, each line is a tag (with weight 1)
2695#   the same value multiple times increases tag weight
2696# * `gitweb.ctag' multi-valued repo config variable
2697sub git_get_project_ctags {
2698        my $project = shift;
2699        my $ctags = {};
2700
2701        $git_dir = "$projectroot/$project";
2702        if (opendir my $dh, "$git_dir/ctags") {
2703                my @files = grep { -f $_ } map { "$git_dir/ctags/$_" } readdir($dh);
2704                foreach my $tagfile (@files) {
2705                        open my $ct, '<', $tagfile
2706                                or next;
2707                        my $val = <$ct>;
2708                        chomp $val if $val;
2709                        close $ct;
2710
2711                        (my $ctag = $tagfile) =~ s#.*/##;
2712                        if ($val =~ /^\d+$/) {
2713                                $ctags->{$ctag} = $val;
2714                        } else {
2715                                $ctags->{$ctag} = 1;
2716                        }
2717                }
2718                closedir $dh;
2719
2720        } elsif (open my $fh, '<', "$git_dir/ctags") {
2721                while (my $line = <$fh>) {
2722                        chomp $line;
2723                        $ctags->{$line}++ if $line;
2724                }
2725                close $fh;
2726
2727        } else {
2728                my $taglist = config_to_multi(git_get_project_config('ctag'));
2729                foreach my $tag (@$taglist) {
2730                        $ctags->{$tag}++;
2731                }
2732        }
2733
2734        return $ctags;
2735}
2736
2737# return hash, where keys are content tags ('ctags'),
2738# and values are sum of weights of given tag in every project
2739sub git_gather_all_ctags {
2740        my $projects = shift;
2741        my $ctags = {};
2742
2743        foreach my $p (@$projects) {
2744                foreach my $ct (keys %{$p->{'ctags'}}) {
2745                        $ctags->{$ct} += $p->{'ctags'}->{$ct};
2746                }
2747        }
2748
2749        return $ctags;
2750}
2751
2752sub git_populate_project_tagcloud {
2753        my $ctags = shift;
2754
2755        # First, merge different-cased tags; tags vote on casing
2756        my %ctags_lc;
2757        foreach (keys %$ctags) {
2758                $ctags_lc{lc $_}->{count} += $ctags->{$_};
2759                if (not $ctags_lc{lc $_}->{topcount}
2760                    or $ctags_lc{lc $_}->{topcount} < $ctags->{$_}) {
2761                        $ctags_lc{lc $_}->{topcount} = $ctags->{$_};
2762                        $ctags_lc{lc $_}->{topname} = $_;
2763                }
2764        }
2765
2766        my $cloud;
2767        my $matched = $cgi->param('by_tag');
2768        if (eval { require HTML::TagCloud; 1; }) {
2769                $cloud = HTML::TagCloud->new;
2770                foreach my $ctag (sort keys %ctags_lc) {
2771                        # Pad the title with spaces so that the cloud looks
2772                        # less crammed.
2773                        my $title = esc_html($ctags_lc{$ctag}->{topname});
2774                        $title =~ s/ /&nbsp;/g;
2775                        $title =~ s/^/&nbsp;/g;
2776                        $title =~ s/$/&nbsp;/g;
2777                        if (defined $matched && $matched eq $ctag) {
2778                                $title = qq(<span class="match">$title</span>);
2779                        }
2780                        $cloud->add($title, href(project=>undef, ctag=>$ctag),
2781                                    $ctags_lc{$ctag}->{count});
2782                }
2783        } else {
2784                $cloud = {};
2785                foreach my $ctag (keys %ctags_lc) {
2786                        my $title = esc_html($ctags_lc{$ctag}->{topname}, -nbsp=>1);
2787                        if (defined $matched && $matched eq $ctag) {
2788                                $title = qq(<span class="match">$title</span>);
2789                        }
2790                        $cloud->{$ctag}{count} = $ctags_lc{$ctag}->{count};
2791                        $cloud->{$ctag}{ctag} =
2792                                $cgi->a({-href=>href(project=>undef, ctag=>$ctag)}, $title);
2793                }
2794        }
2795        return $cloud;
2796}
2797
2798sub git_show_project_tagcloud {
2799        my ($cloud, $count) = @_;
2800        if (ref $cloud eq 'HTML::TagCloud') {
2801                return $cloud->html_and_css($count);
2802        } else {
2803                my @tags = sort { $cloud->{$a}->{'count'} <=> $cloud->{$b}->{'count'} } keys %$cloud;
2804                return
2805                        '<div id="htmltagcloud"'.($project ? '' : ' align="center"').'>' .
2806                        join (', ', map {
2807                                $cloud->{$_}->{'ctag'}
2808                        } splice(@tags, 0, $count)) .
2809                        '</div>';
2810        }
2811}
2812
2813sub git_get_project_url_list {
2814        my $path = shift;
2815
2816        $git_dir = "$projectroot/$path";
2817        open my $fd, '<', "$git_dir/cloneurl"
2818                or return wantarray ?
2819                @{ config_to_multi(git_get_project_config('url')) } :
2820                   config_to_multi(git_get_project_config('url'));
2821        my @git_project_url_list = map { chomp; $_ } <$fd>;
2822        close $fd;
2823
2824        return wantarray ? @git_project_url_list : \@git_project_url_list;
2825}
2826
2827sub git_get_projects_list {
2828        my $filter = shift || '';
2829        my @list;
2830
2831        $filter =~ s/\.git$//;
2832
2833        if (-d $projects_list) {
2834                # search in directory
2835                my $dir = $projects_list;
2836                # remove the trailing "/"
2837                $dir =~ s!/+$!!;
2838                my $pfxlen = length("$projects_list");
2839                my $pfxdepth = ($projects_list =~ tr!/!!);
2840                # when filtering, search only given subdirectory
2841                if ($filter) {
2842                        $dir .= "/$filter";
2843                        $dir =~ s!/+$!!;
2844                }
2845
2846                File::Find::find({
2847                        follow_fast => 1, # follow symbolic links
2848                        follow_skip => 2, # ignore duplicates
2849                        dangling_symlinks => 0, # ignore dangling symlinks, silently
2850                        wanted => sub {
2851                                # global variables
2852                                our $project_maxdepth;
2853                                our $projectroot;
2854                                # skip project-list toplevel, if we get it.
2855                                return if (m!^[/.]$!);
2856                                # only directories can be git repositories
2857                                return unless (-d $_);
2858                                # don't traverse too deep (Find is super slow on os x)
2859                                # $project_maxdepth excludes depth of $projectroot
2860                                if (($File::Find::name =~ tr!/!!) - $pfxdepth > $project_maxdepth) {
2861                                        $File::Find::prune = 1;
2862                                        return;
2863                                }
2864
2865                                my $path = substr($File::Find::name, $pfxlen + 1);
2866                                # we check related file in $projectroot
2867                                if (check_export_ok("$projectroot/$path")) {
2868                                        push @list, { path => $path };
2869                                        $File::Find::prune = 1;
2870                                }
2871                        },
2872                }, "$dir");
2873
2874        } elsif (-f $projects_list) {
2875                # read from file(url-encoded):
2876                # 'git%2Fgit.git Linus+Torvalds'
2877                # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
2878                # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
2879                open my $fd, '<', $projects_list or return;
2880        PROJECT:
2881                while (my $line = <$fd>) {
2882                        chomp $line;
2883                        my ($path, $owner) = split ' ', $line;
2884                        $path = unescape($path);
2885                        $owner = unescape($owner);
2886                        if (!defined $path) {
2887                                next;
2888                        }
2889                        # if $filter is rpovided, check if $path begins with $filter
2890                        if ($filter && $path !~ m!^\Q$filter\E/!) {
2891                                next;
2892                        }
2893                        if (check_export_ok("$projectroot/$path")) {
2894                                my $pr = {
2895                                        path => $path,
2896                                        owner => to_utf8($owner),
2897                                };
2898                                push @list, $pr;
2899                        }
2900                }
2901                close $fd;
2902        }
2903        return @list;
2904}
2905
2906# written with help of Tree::Trie module (Perl Artistic License, GPL compatibile)
2907# as side effects it sets 'forks' field to list of forks for forked projects
2908sub filter_forks_from_projects_list {
2909        my $projects = shift;
2910
2911        my %trie; # prefix tree of directories (path components)
2912        # generate trie out of those directories that might contain forks
2913        foreach my $pr (@$projects) {
2914                my $path = $pr->{'path'};
2915                $path =~ s/\.git$//;      # forks of 'repo.git' are in 'repo/' directory
2916                next if ($path =~ m!/$!); # skip non-bare repositories, e.g. 'repo/.git'
2917                next unless ($path);      # skip '.git' repository: tests, git-instaweb
2918                next unless (-d "$projectroot/$path"); # containing directory exists
2919                $pr->{'forks'} = [];      # there can be 0 or more forks of project
2920
2921                # add to trie
2922                my @dirs = split('/', $path);
2923                # walk the trie, until either runs out of components or out of trie
2924                my $ref = \%trie;
2925                while (scalar @dirs &&
2926                       exists($ref->{$dirs[0]})) {
2927                        $ref = $ref->{shift @dirs};
2928                }
2929                # create rest of trie structure from rest of components
2930                foreach my $dir (@dirs) {
2931                        $ref = $ref->{$dir} = {};
2932                }
2933                # create end marker, store $pr as a data
2934                $ref->{''} = $pr if (!exists $ref->{''});
2935        }
2936
2937        # filter out forks, by finding shortest prefix match for paths
2938        my @filtered;
2939 PROJECT:
2940        foreach my $pr (@$projects) {
2941                # trie lookup
2942                my $ref = \%trie;
2943        DIR:
2944                foreach my $dir (split('/', $pr->{'path'})) {
2945                        if (exists $ref->{''}) {
2946                                # found [shortest] prefix, is a fork - skip it
2947                                push @{$ref->{''}{'forks'}}, $pr;
2948                                next PROJECT;
2949                        }
2950                        if (!exists $ref->{$dir}) {
2951                                # not in trie, cannot have prefix, not a fork
2952                                push @filtered, $pr;
2953                                next PROJECT;
2954                        }
2955                        # If the dir is there, we just walk one step down the trie.
2956                        $ref = $ref->{$dir};
2957                }
2958                # we ran out of trie
2959                # (shouldn't happen: it's either no match, or end marker)
2960                push @filtered, $pr;
2961        }
2962
2963        return @filtered;
2964}
2965
2966# note: fill_project_list_info must be run first,
2967# for 'descr_long' and 'ctags' to be filled
2968sub search_projects_list {
2969        my ($projlist, %opts) = @_;
2970        my $tagfilter  = $opts{'tagfilter'};
2971        my $searchtext = $opts{'searchtext'};
2972
2973        return @$projlist
2974                unless ($tagfilter || $searchtext);
2975
2976        my @projects;
2977 PROJECT:
2978        foreach my $pr (@$projlist) {
2979
2980                if ($tagfilter) {
2981                        next unless ref($pr->{'ctags'}) eq 'HASH';
2982                        next unless
2983                                grep { lc($_) eq lc($tagfilter) } keys %{$pr->{'ctags'}};
2984                }
2985
2986                if ($searchtext) {
2987                        next unless
2988                                $pr->{'path'} =~ /$searchtext/ ||
2989                                $pr->{'descr_long'} =~ /$searchtext/;
2990                }
2991
2992                push @projects, $pr;
2993        }
2994
2995        return @projects;
2996}
2997
2998our $gitweb_project_owner = undef;
2999sub git_get_project_list_from_file {
3000
3001        return if (defined $gitweb_project_owner);
3002
3003        $gitweb_project_owner = {};
3004        # read from file (url-encoded):
3005        # 'git%2Fgit.git Linus+Torvalds'
3006        # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
3007        # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
3008        if (-f $projects_list) {
3009                open(my $fd, '<', $projects_list);
3010                while (my $line = <$fd>) {
3011                        chomp $line;
3012                        my ($pr, $ow) = split ' ', $line;
3013                        $pr = unescape($pr);
3014                        $ow = unescape($ow);
3015                        $gitweb_project_owner->{$pr} = to_utf8($ow);
3016                }
3017                close $fd;
3018        }
3019}
3020
3021sub git_get_project_owner {
3022        my $project = shift;
3023        my $owner;
3024
3025        return undef unless $project;
3026        $git_dir = "$projectroot/$project";
3027
3028        if (!defined $gitweb_project_owner) {
3029                git_get_project_list_from_file();
3030        }
3031
3032        if (exists $gitweb_project_owner->{$project}) {
3033                $owner = $gitweb_project_owner->{$project};
3034        }
3035        if (!defined $owner){
3036                $owner = git_get_project_config('owner');
3037        }
3038        if (!defined $owner) {
3039                $owner = get_file_owner("$git_dir");
3040        }
3041
3042        return $owner;
3043}
3044
3045sub git_get_last_activity {
3046        my ($path) = @_;
3047        my $fd;
3048
3049        $git_dir = "$projectroot/$path";
3050        open($fd, "-|", git_cmd(), 'for-each-ref',
3051             '--format=%(committer)',
3052             '--sort=-committerdate',
3053             '--count=1',
3054             'refs/heads') or return;
3055        my $most_recent = <$fd>;
3056        close $fd or return;
3057        if (defined $most_recent &&
3058            $most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
3059                my $timestamp = $1;
3060                my $age = time - $timestamp;
3061                return ($age, age_string($age));
3062        }
3063        return (undef, undef);
3064}
3065
3066# Implementation note: when a single remote is wanted, we cannot use 'git
3067# remote show -n' because that command always work (assuming it's a remote URL
3068# if it's not defined), and we cannot use 'git remote show' because that would
3069# try to make a network roundtrip. So the only way to find if that particular
3070# remote is defined is to walk the list provided by 'git remote -v' and stop if
3071# and when we find what we want.
3072sub git_get_remotes_list {
3073        my $wanted = shift;
3074        my %remotes = ();
3075
3076        open my $fd, '-|' , git_cmd(), 'remote', '-v';
3077        return unless $fd;
3078        while (my $remote = <$fd>) {
3079                chomp $remote;
3080                $remote =~ s!\t(.*?)\s+\((\w+)\)$!!;
3081                next if $wanted and not $remote eq $wanted;
3082                my ($url, $key) = ($1, $2);
3083
3084                $remotes{$remote} ||= { 'heads' => () };
3085                $remotes{$remote}{$key} = $url;
3086        }
3087        close $fd or return;
3088        return wantarray ? %remotes : \%remotes;
3089}
3090
3091# Takes a hash of remotes as first parameter and fills it by adding the
3092# available remote heads for each of the indicated remotes.
3093sub fill_remote_heads {
3094        my $remotes = shift;
3095        my @heads = map { "remotes/$_" } keys %$remotes;
3096        my @remoteheads = git_get_heads_list(undef, @heads);
3097        foreach my $remote (keys %$remotes) {
3098                $remotes->{$remote}{'heads'} = [ grep {
3099                        $_->{'name'} =~ s!^$remote/!!
3100                        } @remoteheads ];
3101        }
3102}
3103
3104sub git_get_references {
3105        my $type = shift || "";
3106        my %refs;
3107        # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
3108        # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
3109        open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
3110                ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
3111                or return;
3112
3113        while (my $line = <$fd>) {
3114                chomp $line;
3115                if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type.*)$!) {
3116                        if (defined $refs{$1}) {
3117                                push @{$refs{$1}}, $2;
3118                        } else {
3119                                $refs{$1} = [ $2 ];
3120                        }
3121                }
3122        }
3123        close $fd or return;
3124        return \%refs;
3125}
3126
3127sub git_get_rev_name_tags {
3128        my $hash = shift || return undef;
3129
3130        open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
3131                or return;
3132        my $name_rev = <$fd>;
3133        close $fd;
3134
3135        if ($name_rev =~ m|^$hash tags/(.*)$|) {
3136                return $1;
3137        } else {
3138                # catches also '$hash undefined' output
3139                return undef;
3140        }
3141}
3142
3143## ----------------------------------------------------------------------
3144## parse to hash functions
3145
3146sub parse_date {
3147        my $epoch = shift;
3148        my $tz = shift || "-0000";
3149
3150        my %date;
3151        my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
3152        my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
3153        my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
3154        $date{'hour'} = $hour;
3155        $date{'minute'} = $min;
3156        $date{'mday'} = $mday;
3157        $date{'day'} = $days[$wday];
3158        $date{'month'} = $months[$mon];
3159        $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
3160                             $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
3161        $date{'mday-time'} = sprintf "%d %s %02d:%02d",
3162                             $mday, $months[$mon], $hour ,$min;
3163        $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
3164                             1900+$year, 1+$mon, $mday, $hour ,$min, $sec;
3165
3166        my ($tz_sign, $tz_hour, $tz_min) =
3167                ($tz =~ m/^([-+])(\d\d)(\d\d)$/);
3168        $tz_sign = ($tz_sign eq '-' ? -1 : +1);
3169        my $local = $epoch + $tz_sign*((($tz_hour*60) + $tz_min)*60);
3170        ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
3171        $date{'hour_local'} = $hour;
3172        $date{'minute_local'} = $min;
3173        $date{'tz_local'} = $tz;
3174        $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
3175                                  1900+$year, $mon+1, $mday,
3176                                  $hour, $min, $sec, $tz);
3177        return %date;
3178}
3179
3180sub parse_tag {
3181        my $tag_id = shift;
3182        my %tag;
3183        my @comment;
3184
3185        open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
3186        $tag{'id'} = $tag_id;
3187        while (my $line = <$fd>) {
3188                chomp $line;
3189                if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
3190                        $tag{'object'} = $1;
3191                } elsif ($line =~ m/^type (.+)$/) {
3192                        $tag{'type'} = $1;
3193                } elsif ($line =~ m/^tag (.+)$/) {
3194                        $tag{'name'} = $1;
3195                } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
3196                        $tag{'author'} = $1;
3197                        $tag{'author_epoch'} = $2;
3198                        $tag{'author_tz'} = $3;
3199                        if ($tag{'author'} =~ m/^([^<]+) <([^>]*)>/) {
3200                                $tag{'author_name'}  = $1;
3201                                $tag{'author_email'} = $2;
3202                        } else {
3203                                $tag{'author_name'} = $tag{'author'};
3204                        }
3205                } elsif ($line =~ m/--BEGIN/) {
3206                        push @comment, $line;
3207                        last;
3208                } elsif ($line eq "") {
3209                        last;
3210                }
3211        }
3212        push @comment, <$fd>;
3213        $tag{'comment'} = \@comment;
3214        close $fd or return;
3215        if (!defined $tag{'name'}) {
3216                return
3217        };
3218        return %tag
3219}
3220
3221sub parse_commit_text {
3222        my ($commit_text, $withparents) = @_;
3223        my @commit_lines = split '\n', $commit_text;
3224        my %co;
3225
3226        pop @commit_lines; # Remove '\0'
3227
3228        if (! @commit_lines) {
3229                return;
3230        }
3231
3232        my $header = shift @commit_lines;
3233        if ($header !~ m/^[0-9a-fA-F]{40}/) {
3234                return;
3235        }
3236        ($co{'id'}, my @parents) = split ' ', $header;
3237        while (my $line = shift @commit_lines) {
3238                last if $line eq "\n";
3239                if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
3240                        $co{'tree'} = $1;
3241                } elsif ((!defined $withparents) && ($line =~ m/^parent ([0-9a-fA-F]{40})$/)) {
3242                        push @parents, $1;
3243                } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
3244                        $co{'author'} = to_utf8($1);
3245                        $co{'author_epoch'} = $2;
3246                        $co{'author_tz'} = $3;
3247                        if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
3248                                $co{'author_name'}  = $1;
3249                                $co{'author_email'} = $2;
3250                        } else {
3251                                $co{'author_name'} = $co{'author'};
3252                        }
3253                } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
3254                        $co{'committer'} = to_utf8($1);
3255                        $co{'committer_epoch'} = $2;
3256                        $co{'committer_tz'} = $3;
3257                        if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
3258                                $co{'committer_name'}  = $1;
3259                                $co{'committer_email'} = $2;
3260                        } else {
3261                                $co{'committer_name'} = $co{'committer'};
3262                        }
3263                }
3264        }
3265        if (!defined $co{'tree'}) {
3266                return;
3267        };
3268        $co{'parents'} = \@parents;
3269        $co{'parent'} = $parents[0];
3270
3271        foreach my $title (@commit_lines) {
3272                $title =~ s/^    //;
3273                if ($title ne "") {
3274                        $co{'title'} = chop_str($title, 80, 5);
3275                        # remove leading stuff of merges to make the interesting part visible
3276                        if (length($title) > 50) {
3277                                $title =~ s/^Automatic //;
3278                                $title =~ s/^merge (of|with) /Merge ... /i;
3279                                if (length($title) > 50) {
3280                                        $title =~ s/(http|rsync):\/\///;
3281                                }
3282                                if (length($title) > 50) {
3283                                        $title =~ s/(master|www|rsync)\.//;
3284                                }
3285                                if (length($title) > 50) {
3286                                        $title =~ s/kernel.org:?//;
3287                                }
3288                                if (length($title) > 50) {
3289                                        $title =~ s/\/pub\/scm//;
3290                                }
3291                        }
3292                        $co{'title_short'} = chop_str($title, 50, 5);
3293                        last;
3294                }
3295        }
3296        if (! defined $co{'title'} || $co{'title'} eq "") {
3297                $co{'title'} = $co{'title_short'} = '(no commit message)';
3298        }
3299        # remove added spaces
3300        foreach my $line (@commit_lines) {
3301                $line =~ s/^    //;
3302        }
3303        $co{'comment'} = \@commit_lines;
3304
3305        my $age = time - $co{'committer_epoch'};
3306        $co{'age'} = $age;
3307        $co{'age_string'} = age_string($age);
3308        my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
3309        if ($age > 60*60*24*7*2) {
3310                $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
3311                $co{'age_string_age'} = $co{'age_string'};
3312        } else {
3313                $co{'age_string_date'} = $co{'age_string'};
3314                $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
3315        }
3316        return %co;
3317}
3318
3319sub parse_commit {
3320        my ($commit_id) = @_;
3321        my %co;
3322
3323        local $/ = "\0";
3324
3325        open my $fd, "-|", git_cmd(), "rev-list",
3326                "--parents",
3327                "--header",
3328                "--max-count=1",
3329                $commit_id,
3330                "--",
3331                or die_error(500, "Open git-rev-list failed");
3332        %co = parse_commit_text(<$fd>, 1);
3333        close $fd;
3334
3335        return %co;
3336}
3337
3338sub parse_commits {
3339        my ($commit_id, $maxcount, $skip, $filename, @args) = @_;
3340        my @cos;
3341
3342        $maxcount ||= 1;
3343        $skip ||= 0;
3344
3345        local $/ = "\0";
3346
3347        open my $fd, "-|", git_cmd(), "rev-list",
3348                "--header",
3349                @args,
3350                ("--max-count=" . $maxcount),
3351                ("--skip=" . $skip),
3352                @extra_options,
3353                $commit_id,
3354                "--",
3355                ($filename ? ($filename) : ())
3356                or die_error(500, "Open git-rev-list failed");
3357        while (my $line = <$fd>) {
3358                my %co = parse_commit_text($line);
3359                push @cos, \%co;
3360        }
3361        close $fd;
3362
3363        return wantarray ? @cos : \@cos;
3364}
3365
3366# parse line of git-diff-tree "raw" output
3367sub parse_difftree_raw_line {
3368        my $line = shift;
3369        my %res;
3370
3371        # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
3372        # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
3373        if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
3374                $res{'from_mode'} = $1;
3375                $res{'to_mode'} = $2;
3376                $res{'from_id'} = $3;
3377                $res{'to_id'} = $4;
3378                $res{'status'} = $5;
3379                $res{'similarity'} = $6;
3380                if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
3381                        ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
3382                } else {
3383                        $res{'from_file'} = $res{'to_file'} = $res{'file'} = unquote($7);
3384                }
3385        }
3386        # '::100755 100755 100755 60e79ca1b01bc8b057abe17ddab484699a7f5fdb 94067cc5f73388f33722d52ae02f44692bc07490 94067cc5f73388f33722d52ae02f44692bc07490 MR git-gui/git-gui.sh'
3387        # combined diff (for merge commit)
3388        elsif ($line =~ s/^(::+)((?:[0-7]{6} )+)((?:[0-9a-fA-F]{40} )+)([a-zA-Z]+)\t(.*)$//) {
3389                $res{'nparents'}  = length($1);
3390                $res{'from_mode'} = [ split(' ', $2) ];
3391                $res{'to_mode'} = pop @{$res{'from_mode'}};
3392                $res{'from_id'} = [ split(' ', $3) ];
3393                $res{'to_id'} = pop @{$res{'from_id'}};
3394                $res{'status'} = [ split('', $4) ];
3395                $res{'to_file'} = unquote($5);
3396        }
3397        # 'c512b523472485aef4fff9e57b229d9d243c967f'
3398        elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
3399                $res{'commit'} = $1;
3400        }
3401
3402        return wantarray ? %res : \%res;
3403}
3404
3405# wrapper: return parsed line of git-diff-tree "raw" output
3406# (the argument might be raw line, or parsed info)
3407sub parsed_difftree_line {
3408        my $line_or_ref = shift;
3409
3410        if (ref($line_or_ref) eq "HASH") {
3411                # pre-parsed (or generated by hand)
3412                return $line_or_ref;
3413        } else {
3414                return parse_difftree_raw_line($line_or_ref);
3415        }
3416}
3417
3418# parse line of git-ls-tree output
3419sub parse_ls_tree_line {
3420        my $line = shift;
3421        my %opts = @_;
3422        my %res;
3423
3424        if ($opts{'-l'}) {
3425                #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa   16717  panic.c'
3426                $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40}) +(-|[0-9]+)\t(.+)$/s;
3427
3428                $res{'mode'} = $1;
3429                $res{'type'} = $2;
3430                $res{'hash'} = $3;
3431                $res{'size'} = $4;
3432                if ($opts{'-z'}) {
3433                        $res{'name'} = $5;
3434                } else {
3435                        $res{'name'} = unquote($5);
3436                }
3437        } else {
3438                #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
3439                $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
3440
3441                $res{'mode'} = $1;
3442                $res{'type'} = $2;
3443                $res{'hash'} = $3;
3444                if ($opts{'-z'}) {
3445                        $res{'name'} = $4;
3446                } else {
3447                        $res{'name'} = unquote($4);
3448                }
3449        }
3450
3451        return wantarray ? %res : \%res;
3452}
3453
3454# generates _two_ hashes, references to which are passed as 2 and 3 argument
3455sub parse_from_to_diffinfo {
3456        my ($diffinfo, $from, $to, @parents) = @_;
3457
3458        if ($diffinfo->{'nparents'}) {
3459                # combined diff
3460                $from->{'file'} = [];
3461                $from->{'href'} = [];
3462                fill_from_file_info($diffinfo, @parents)
3463                        unless exists $diffinfo->{'from_file'};
3464                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
3465                        $from->{'file'}[$i] =
3466                                defined $diffinfo->{'from_file'}[$i] ?
3467                                        $diffinfo->{'from_file'}[$i] :
3468                                        $diffinfo->{'to_file'};
3469                        if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
3470                                $from->{'href'}[$i] = href(action=>"blob",
3471                                                           hash_base=>$parents[$i],
3472                                                           hash=>$diffinfo->{'from_id'}[$i],
3473                                                           file_name=>$from->{'file'}[$i]);
3474                        } else {
3475                                $from->{'href'}[$i] = undef;
3476                        }
3477                }
3478        } else {
3479                # ordinary (not combined) diff
3480                $from->{'file'} = $diffinfo->{'from_file'};
3481                if ($diffinfo->{'status'} ne "A") { # not new (added) file
3482                        $from->{'href'} = href(action=>"blob", hash_base=>$hash_parent,
3483                                               hash=>$diffinfo->{'from_id'},
3484                                               file_name=>$from->{'file'});
3485                } else {
3486                        delete $from->{'href'};
3487                }
3488        }
3489
3490        $to->{'file'} = $diffinfo->{'to_file'};
3491        if (!is_deleted($diffinfo)) { # file exists in result
3492                $to->{'href'} = href(action=>"blob", hash_base=>$hash,
3493                                     hash=>$diffinfo->{'to_id'},
3494                                     file_name=>$to->{'file'});
3495        } else {
3496                delete $to->{'href'};
3497        }
3498}
3499
3500## ......................................................................
3501## parse to array of hashes functions
3502
3503sub git_get_heads_list {
3504        my ($limit, @classes) = @_;
3505        @classes = ('heads') unless @classes;
3506        my @patterns = map { "refs/$_" } @classes;
3507        my @headslist;
3508
3509        open my $fd, '-|', git_cmd(), 'for-each-ref',
3510                ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
3511                '--format=%(objectname) %(refname) %(subject)%00%(committer)',
3512                @patterns
3513                or return;
3514        while (my $line = <$fd>) {
3515                my %ref_item;
3516
3517                chomp $line;
3518                my ($refinfo, $committerinfo) = split(/\0/, $line);
3519                my ($hash, $name, $title) = split(' ', $refinfo, 3);
3520                my ($committer, $epoch, $tz) =
3521                        ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
3522                $ref_item{'fullname'}  = $name;
3523                $name =~ s!^refs/(?:head|remote)s/!!;
3524
3525                $ref_item{'name'}  = $name;
3526                $ref_item{'id'}    = $hash;
3527                $ref_item{'title'} = $title || '(no commit message)';
3528                $ref_item{'epoch'} = $epoch;
3529                if ($epoch) {
3530                        $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
3531                } else {
3532                        $ref_item{'age'} = "unknown";
3533                }
3534
3535                push @headslist, \%ref_item;
3536        }
3537        close $fd;
3538
3539        return wantarray ? @headslist : \@headslist;
3540}
3541
3542sub git_get_tags_list {
3543        my $limit = shift;
3544        my @tagslist;
3545
3546        open my $fd, '-|', git_cmd(), 'for-each-ref',
3547                ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
3548                '--format=%(objectname) %(objecttype) %(refname) '.
3549                '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
3550                'refs/tags'
3551                or return;
3552        while (my $line = <$fd>) {
3553                my %ref_item;
3554
3555                chomp $line;
3556                my ($refinfo, $creatorinfo) = split(/\0/, $line);
3557                my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
3558                my ($creator, $epoch, $tz) =
3559                        ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
3560                $ref_item{'fullname'} = $name;
3561                $name =~ s!^refs/tags/!!;
3562
3563                $ref_item{'type'} = $type;
3564                $ref_item{'id'} = $id;
3565                $ref_item{'name'} = $name;
3566                if ($type eq "tag") {
3567                        $ref_item{'subject'} = $title;
3568                        $ref_item{'reftype'} = $reftype;
3569                        $ref_item{'refid'}   = $refid;
3570                } else {
3571                        $ref_item{'reftype'} = $type;
3572                        $ref_item{'refid'}   = $id;
3573                }
3574
3575                if ($type eq "tag" || $type eq "commit") {
3576                        $ref_item{'epoch'} = $epoch;
3577                        if ($epoch) {
3578                                $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
3579                        } else {
3580                                $ref_item{'age'} = "unknown";
3581                        }
3582                }
3583
3584                push @tagslist, \%ref_item;
3585        }
3586        close $fd;
3587
3588        return wantarray ? @tagslist : \@tagslist;
3589}
3590
3591## ----------------------------------------------------------------------
3592## filesystem-related functions
3593
3594sub get_file_owner {
3595        my $path = shift;
3596
3597        my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
3598        my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
3599        if (!defined $gcos) {
3600                return undef;
3601        }
3602        my $owner = $gcos;
3603        $owner =~ s/[,;].*$//;
3604        return to_utf8($owner);
3605}
3606
3607# assume that file exists
3608sub insert_file {
3609        my $filename = shift;
3610
3611        open my $fd, '<', $filename;
3612        print map { to_utf8($_) } <$fd>;
3613        close $fd;
3614}
3615
3616## ......................................................................
3617## mimetype related functions
3618
3619sub mimetype_guess_file {
3620        my $filename = shift;
3621        my $mimemap = shift;
3622        -r $mimemap or return undef;
3623
3624        my %mimemap;
3625        open(my $mh, '<', $mimemap) or return undef;
3626        while (<$mh>) {
3627                next if m/^#/; # skip comments
3628                my ($mimetype, @exts) = split(/\s+/);
3629                foreach my $ext (@exts) {
3630                        $mimemap{$ext} = $mimetype;
3631                }
3632        }
3633        close($mh);
3634
3635        $filename =~ /\.([^.]*)$/;
3636        return $mimemap{$1};
3637}
3638
3639sub mimetype_guess {
3640        my $filename = shift;
3641        my $mime;
3642        $filename =~ /\./ or return undef;
3643
3644        if ($mimetypes_file) {
3645                my $file = $mimetypes_file;
3646                if ($file !~ m!^/!) { # if it is relative path
3647                        # it is relative to project
3648                        $file = "$projectroot/$project/$file";
3649                }
3650                $mime = mimetype_guess_file($filename, $file);
3651        }
3652        $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
3653        return $mime;
3654}
3655
3656sub blob_mimetype {
3657        my $fd = shift;
3658        my $filename = shift;
3659
3660        if ($filename) {
3661                my $mime = mimetype_guess($filename);
3662                $mime and return $mime;
3663        }
3664
3665        # just in case
3666        return $default_blob_plain_mimetype unless $fd;
3667
3668        if (-T $fd) {
3669                return 'text/plain';
3670        } elsif (! $filename) {
3671                return 'application/octet-stream';
3672        } elsif ($filename =~ m/\.png$/i) {
3673                return 'image/png';
3674        } elsif ($filename =~ m/\.gif$/i) {
3675                return 'image/gif';
3676        } elsif ($filename =~ m/\.jpe?g$/i) {
3677                return 'image/jpeg';
3678        } else {
3679                return 'application/octet-stream';
3680        }
3681}
3682
3683sub blob_contenttype {
3684        my ($fd, $file_name, $type) = @_;
3685
3686        $type ||= blob_mimetype($fd, $file_name);
3687        if ($type eq 'text/plain' && defined $default_text_plain_charset) {
3688                $type .= "; charset=$default_text_plain_charset";
3689        }
3690
3691        return $type;
3692}
3693
3694# guess file syntax for syntax highlighting; return undef if no highlighting
3695# the name of syntax can (in the future) depend on syntax highlighter used
3696sub guess_file_syntax {
3697        my ($highlight, $mimetype, $file_name) = @_;
3698        return undef unless ($highlight && defined $file_name);
3699        my $basename = basename($file_name, '.in');
3700        return $highlight_basename{$basename}
3701                if exists $highlight_basename{$basename};
3702
3703        $basename =~ /\.([^.]*)$/;
3704        my $ext = $1 or return undef;
3705        return $highlight_ext{$ext}
3706                if exists $highlight_ext{$ext};
3707
3708        return undef;
3709}
3710
3711# run highlighter and return FD of its output,
3712# or return original FD if no highlighting
3713sub run_highlighter {
3714        my ($fd, $highlight, $syntax) = @_;
3715        return $fd unless ($highlight && defined $syntax);
3716
3717        close $fd;
3718        open $fd, quote_command(git_cmd(), "cat-file", "blob", $hash)." | ".
3719                  quote_command($highlight_bin).
3720                  " --replace-tabs=8 --fragment --syntax $syntax |"
3721                or die_error(500, "Couldn't open file or run syntax highlighter");
3722        return $fd;
3723}
3724
3725## ======================================================================
3726## functions printing HTML: header, footer, error page
3727
3728sub get_page_title {
3729        my $title = to_utf8($site_name);
3730
3731        return $title unless (defined $project);
3732        $title .= " - " . to_utf8($project);
3733
3734        return $title unless (defined $action);
3735        $title .= "/$action"; # $action is US-ASCII (7bit ASCII)
3736
3737        return $title unless (defined $file_name);
3738        $title .= " - " . esc_path($file_name);
3739        if ($action eq "tree" && $file_name !~ m|/$|) {
3740                $title .= "/";
3741        }
3742
3743        return $title;
3744}
3745
3746sub get_content_type_html {
3747        # require explicit support from the UA if we are to send the page as
3748        # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
3749        # we have to do this because MSIE sometimes globs '*/*', pretending to
3750        # support xhtml+xml but choking when it gets what it asked for.
3751        if (defined $cgi->http('HTTP_ACCEPT') &&
3752            $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
3753            $cgi->Accept('application/xhtml+xml') != 0) {
3754                return 'application/xhtml+xml';
3755        } else {
3756                return 'text/html';
3757        }
3758}
3759
3760sub print_feed_meta {
3761        if (defined $project) {
3762                my %href_params = get_feed_info();
3763                if (!exists $href_params{'-title'}) {
3764                        $href_params{'-title'} = 'log';
3765                }
3766
3767                foreach my $format (qw(RSS Atom)) {
3768                        my $type = lc($format);
3769                        my %link_attr = (
3770                                '-rel' => 'alternate',
3771                                '-title' => esc_attr("$project - $href_params{'-title'} - $format feed"),
3772                                '-type' => "application/$type+xml"
3773                        );
3774
3775                        $href_params{'action'} = $type;
3776                        $link_attr{'-href'} = href(%href_params);
3777                        print "<link ".
3778                              "rel=\"$link_attr{'-rel'}\" ".
3779                              "title=\"$link_attr{'-title'}\" ".
3780                              "href=\"$link_attr{'-href'}\" ".
3781                              "type=\"$link_attr{'-type'}\" ".
3782                              "/>\n";
3783
3784                        $href_params{'extra_options'} = '--no-merges';
3785                        $link_attr{'-href'} = href(%href_params);
3786                        $link_attr{'-title'} .= ' (no merges)';
3787                        print "<link ".
3788                              "rel=\"$link_attr{'-rel'}\" ".
3789                              "title=\"$link_attr{'-title'}\" ".
3790                              "href=\"$link_attr{'-href'}\" ".
3791                              "type=\"$link_attr{'-type'}\" ".
3792                              "/>\n";
3793                }
3794
3795        } else {
3796                printf('<link rel="alternate" title="%s projects list" '.
3797                       'href="%s" type="text/plain; charset=utf-8" />'."\n",
3798                       esc_attr($site_name), href(project=>undef, action=>"project_index"));
3799                printf('<link rel="alternate" title="%s projects feeds" '.
3800                       'href="%s" type="text/x-opml" />'."\n",
3801                       esc_attr($site_name), href(project=>undef, action=>"opml"));
3802        }
3803}
3804
3805sub print_header_links {
3806        my $status = shift;
3807
3808        # print out each stylesheet that exist, providing backwards capability
3809        # for those people who defined $stylesheet in a config file
3810        if (defined $stylesheet) {
3811                print '<link rel="stylesheet" type="text/css" href="'.esc_url($stylesheet).'"/>'."\n";
3812        } else {
3813                foreach my $stylesheet (@stylesheets) {
3814                        next unless $stylesheet;
3815                        print '<link rel="stylesheet" type="text/css" href="'.esc_url($stylesheet).'"/>'."\n";
3816                }
3817        }
3818        print_feed_meta()
3819                if ($status eq '200 OK');
3820        if (defined $favicon) {
3821                print qq(<link rel="shortcut icon" href=").esc_url($favicon).qq(" type="image/png" />\n);
3822        }
3823}
3824
3825sub print_nav_breadcrumbs {
3826        my %opts = @_;
3827
3828        print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
3829        if (defined $project) {
3830                print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
3831                if (defined $action) {
3832                        my $action_print = $action ;
3833                        if (defined $opts{-action_extra}) {
3834                                $action_print = $cgi->a({-href => href(action=>$action)},
3835                                        $action);
3836                        }
3837                        print " / $action_print";
3838                }
3839                if (defined $opts{-action_extra}) {
3840                        print " / $opts{-action_extra}";
3841                }
3842                print "\n";
3843        }
3844}
3845
3846sub print_search_form {
3847        if (!defined $searchtext) {
3848                $searchtext = "";
3849        }
3850        my $search_hash;
3851        if (defined $hash_base) {
3852                $search_hash = $hash_base;
3853        } elsif (defined $hash) {
3854                $search_hash = $hash;
3855        } else {
3856                $search_hash = "HEAD";
3857        }
3858        my $action = $my_uri;
3859        my $use_pathinfo = gitweb_check_feature('pathinfo');
3860        if ($use_pathinfo) {
3861                $action .= "/".esc_url($project);
3862        }
3863        print $cgi->startform(-method => "get", -action => $action) .
3864              "<div class=\"search\">\n" .
3865              (!$use_pathinfo &&
3866              $cgi->input({-name=>"p", -value=>$project, -type=>"hidden"}) . "\n") .
3867              $cgi->input({-name=>"a", -value=>"search", -type=>"hidden"}) . "\n" .
3868              $cgi->input({-name=>"h", -value=>$search_hash, -type=>"hidden"}) . "\n" .
3869              $cgi->popup_menu(-name => 'st', -default => 'commit',
3870                               -values => ['commit', 'grep', 'author', 'committer', 'pickaxe']) .
3871              $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
3872              " search:\n",
3873              $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
3874              "<span title=\"Extended regular expression\">" .
3875              $cgi->checkbox(-name => 'sr', -value => 1, -label => 're',
3876                             -checked => $search_use_regexp) .
3877              "</span>" .
3878              "</div>" .
3879              $cgi->end_form() . "\n";
3880}
3881
3882sub git_header_html {
3883        my $status = shift || "200 OK";
3884        my $expires = shift;
3885        my %opts = @_;
3886
3887        my $title = get_page_title();
3888        my $content_type = get_content_type_html();
3889        print $cgi->header(-type=>$content_type, -charset => 'utf-8',
3890                           -status=> $status, -expires => $expires)
3891                unless ($opts{'-no_http_header'});
3892        my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
3893        print <<EOF;
3894<?xml version="1.0" encoding="utf-8"?>
3895<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
3896<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
3897<!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
3898<!-- git core binaries version $git_version -->
3899<head>
3900<meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
3901<meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
3902<meta name="robots" content="index, nofollow"/>
3903<title>$title</title>
3904EOF
3905        # the stylesheet, favicon etc urls won't work correctly with path_info
3906        # unless we set the appropriate base URL
3907        if ($ENV{'PATH_INFO'}) {
3908                print "<base href=\"".esc_url($base_url)."\" />\n";
3909        }
3910        print_header_links($status);
3911
3912        if (defined $site_html_head_string) {
3913                print to_utf8($site_html_head_string);
3914        }
3915
3916        print "</head>\n" .
3917              "<body>\n";
3918
3919        if (defined $site_header && -f $site_header) {
3920                insert_file($site_header);
3921        }
3922
3923        print "<div class=\"page_header\">\n";
3924        if (defined $logo) {
3925                print $cgi->a({-href => esc_url($logo_url),
3926                               -title => $logo_label},
3927                              $cgi->img({-src => esc_url($logo),
3928                                         -width => 72, -height => 27,
3929                                         -alt => "git",
3930                                         -class => "logo"}));
3931        }
3932        print_nav_breadcrumbs(%opts);
3933        print "</div>\n";
3934
3935        my $have_search = gitweb_check_feature('search');
3936        if (defined $project && $have_search) {
3937                print_search_form();
3938        }
3939}
3940
3941sub git_footer_html {
3942        my $feed_class = 'rss_logo';
3943
3944        print "<div class=\"page_footer\">\n";
3945        if (defined $project) {
3946                my $descr = git_get_project_description($project);
3947                if (defined $descr) {
3948                        print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
3949                }
3950
3951                my %href_params = get_feed_info();
3952                if (!%href_params) {
3953                        $feed_class .= ' generic';
3954                }
3955                $href_params{'-title'} ||= 'log';
3956
3957                foreach my $format (qw(RSS Atom)) {
3958                        $href_params{'action'} = lc($format);
3959                        print $cgi->a({-href => href(%href_params),
3960                                      -title => "$href_params{'-title'} $format feed",
3961                                      -class => $feed_class}, $format)."\n";
3962                }
3963
3964        } else {
3965                print $cgi->a({-href => href(project=>undef, action=>"opml"),
3966                              -class => $feed_class}, "OPML") . " ";
3967                print $cgi->a({-href => href(project=>undef, action=>"project_index"),
3968                              -class => $feed_class}, "TXT") . "\n";
3969        }
3970        print "</div>\n"; # class="page_footer"
3971
3972        if (defined $t0 && gitweb_check_feature('timed')) {
3973                print "<div id=\"generating_info\">\n";
3974                print 'This page took '.
3975                      '<span id="generating_time" class="time_span">'.
3976                      tv_interval($t0, [ gettimeofday() ]).
3977                      ' seconds </span>'.
3978                      ' and '.
3979                      '<span id="generating_cmd">'.
3980                      $number_of_git_cmds.
3981                      '</span> git commands '.
3982                      " to generate.\n";
3983                print "</div>\n"; # class="page_footer"
3984        }
3985
3986        if (defined $site_footer && -f $site_footer) {
3987                insert_file($site_footer);
3988        }
3989
3990        print qq!<script type="text/javascript" src="!.esc_url($javascript).qq!"></script>\n!;
3991        if (defined $action &&
3992            $action eq 'blame_incremental') {
3993                print qq!<script type="text/javascript">\n!.
3994                      qq!startBlame("!. href(action=>"blame_data", -replay=>1) .qq!",\n!.
3995                      qq!           "!. href() .qq!");\n!.
3996                      qq!</script>\n!;
3997        } else {
3998                my ($jstimezone, $tz_cookie, $datetime_class) =
3999                        gitweb_get_feature('javascript-timezone');
4000
4001                print qq!<script type="text/javascript">\n!.
4002                      qq!window.onload = function () {\n!;
4003                if (gitweb_check_feature('javascript-actions')) {
4004                        print qq!       fixLinks();\n!;
4005                }
4006                if ($jstimezone && $tz_cookie && $datetime_class) {
4007                        print qq!       var tz_cookie = { name: '$tz_cookie', expires: 14, path: '/' };\n!. # in days
4008                              qq!       onloadTZSetup('$jstimezone', tz_cookie, '$datetime_class');\n!;
4009                }
4010                print qq!};\n!.
4011                      qq!</script>\n!;
4012        }
4013
4014        print "</body>\n" .
4015              "</html>";
4016}
4017
4018# die_error(<http_status_code>, <error_message>[, <detailed_html_description>])
4019# Example: die_error(404, 'Hash not found')
4020# By convention, use the following status codes (as defined in RFC 2616):
4021# 400: Invalid or missing CGI parameters, or
4022#      requested object exists but has wrong type.
4023# 403: Requested feature (like "pickaxe" or "snapshot") not enabled on
4024#      this server or project.
4025# 404: Requested object/revision/project doesn't exist.
4026# 500: The server isn't configured properly, or
4027#      an internal error occurred (e.g. failed assertions caused by bugs), or
4028#      an unknown error occurred (e.g. the git binary died unexpectedly).
4029# 503: The server is currently unavailable (because it is overloaded,
4030#      or down for maintenance).  Generally, this is a temporary state.
4031sub die_error {
4032        my $status = shift || 500;
4033        my $error = esc_html(shift) || "Internal Server Error";
4034        my $extra = shift;
4035        my %opts = @_;
4036
4037        my %http_responses = (
4038                400 => '400 Bad Request',
4039                403 => '403 Forbidden',
4040                404 => '404 Not Found',
4041                500 => '500 Internal Server Error',
4042                503 => '503 Service Unavailable',
4043        );
4044        git_header_html($http_responses{$status}, undef, %opts);
4045        print <<EOF;
4046<div class="page_body">
4047<br /><br />
4048$status - $error
4049<br />
4050EOF
4051        if (defined $extra) {
4052                print "<hr />\n" .
4053                      "$extra\n";
4054        }
4055        print "</div>\n";
4056
4057        git_footer_html();
4058        goto DONE_GITWEB
4059                unless ($opts{'-error_handler'});
4060}
4061
4062## ----------------------------------------------------------------------
4063## functions printing or outputting HTML: navigation
4064
4065sub git_print_page_nav {
4066        my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
4067        $extra = '' if !defined $extra; # pager or formats
4068
4069        my @navs = qw(summary shortlog log commit commitdiff tree);
4070        if ($suppress) {
4071                @navs = grep { $_ ne $suppress } @navs;
4072        }
4073
4074        my %arg = map { $_ => {action=>$_} } @navs;
4075        if (defined $head) {
4076                for (qw(commit commitdiff)) {
4077                        $arg{$_}{'hash'} = $head;
4078                }
4079                if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
4080                        for (qw(shortlog log)) {
4081                                $arg{$_}{'hash'} = $head;
4082                        }
4083                }
4084        }
4085
4086        $arg{'tree'}{'hash'} = $treehead if defined $treehead;
4087        $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
4088
4089        my @actions = gitweb_get_feature('actions');
4090        my %repl = (
4091                '%' => '%',
4092                'n' => $project,         # project name
4093                'f' => $git_dir,         # project path within filesystem
4094                'h' => $treehead || '',  # current hash ('h' parameter)
4095                'b' => $treebase || '',  # hash base ('hb' parameter)
4096        );
4097        while (@actions) {
4098                my ($label, $link, $pos) = splice(@actions,0,3);
4099                # insert
4100                @navs = map { $_ eq $pos ? ($_, $label) : $_ } @navs;
4101                # munch munch
4102                $link =~ s/%([%nfhb])/$repl{$1}/g;
4103                $arg{$label}{'_href'} = $link;
4104        }
4105
4106        print "<div class=\"page_nav\">\n" .
4107                (join " | ",
4108                 map { $_ eq $current ?
4109                       $_ : $cgi->a({-href => ($arg{$_}{_href} ? $arg{$_}{_href} : href(%{$arg{$_}}))}, "$_")
4110                 } @navs);
4111        print "<br/>\n$extra<br/>\n" .
4112              "</div>\n";
4113}
4114
4115# returns a submenu for the nagivation of the refs views (tags, heads,
4116# remotes) with the current view disabled and the remotes view only
4117# available if the feature is enabled
4118sub format_ref_views {
4119        my ($current) = @_;
4120        my @ref_views = qw{tags heads};
4121        push @ref_views, 'remotes' if gitweb_check_feature('remote_heads');
4122        return join " | ", map {
4123                $_ eq $current ? $_ :
4124                $cgi->a({-href => href(action=>$_)}, $_)
4125        } @ref_views
4126}
4127
4128sub format_paging_nav {
4129        my ($action, $page, $has_next_link) = @_;
4130        my $paging_nav;
4131
4132
4133        if ($page > 0) {
4134                $paging_nav .=
4135                        $cgi->a({-href => href(-replay=>1, page=>undef)}, "first") .
4136                        " &sdot; " .
4137                        $cgi->a({-href => href(-replay=>1, page=>$page-1),
4138                                 -accesskey => "p", -title => "Alt-p"}, "prev");
4139        } else {
4140                $paging_nav .= "first &sdot; prev";
4141        }
4142
4143        if ($has_next_link) {
4144                $paging_nav .= " &sdot; " .
4145                        $cgi->a({-href => href(-replay=>1, page=>$page+1),
4146                                 -accesskey => "n", -title => "Alt-n"}, "next");
4147        } else {
4148                $paging_nav .= " &sdot; next";
4149        }
4150
4151        return $paging_nav;
4152}
4153
4154## ......................................................................
4155## functions printing or outputting HTML: div
4156
4157sub git_print_header_div {
4158        my ($action, $title, $hash, $hash_base) = @_;
4159        my %args = ();
4160
4161        $args{'action'} = $action;
4162        $args{'hash'} = $hash if $hash;
4163        $args{'hash_base'} = $hash_base if $hash_base;
4164
4165        print "<div class=\"header\">\n" .
4166              $cgi->a({-href => href(%args), -class => "title"},
4167              $title ? $title : $action) .
4168              "\n</div>\n";
4169}
4170
4171sub format_repo_url {
4172        my ($name, $url) = @_;
4173        return "<tr class=\"metadata_url\"><td>$name</td><td>$url</td></tr>\n";
4174}
4175
4176# Group output by placing it in a DIV element and adding a header.
4177# Options for start_div() can be provided by passing a hash reference as the
4178# first parameter to the function.
4179# Options to git_print_header_div() can be provided by passing an array
4180# reference. This must follow the options to start_div if they are present.
4181# The content can be a scalar, which is output as-is, a scalar reference, which
4182# is output after html escaping, an IO handle passed either as *handle or
4183# *handle{IO}, or a function reference. In the latter case all following
4184# parameters will be taken as argument to the content function call.
4185sub git_print_section {
4186        my ($div_args, $header_args, $content);
4187        my $arg = shift;
4188        if (ref($arg) eq 'HASH') {
4189                $div_args = $arg;
4190                $arg = shift;
4191        }
4192        if (ref($arg) eq 'ARRAY') {
4193                $header_args = $arg;
4194                $arg = shift;
4195        }
4196        $content = $arg;
4197
4198        print $cgi->start_div($div_args);
4199        git_print_header_div(@$header_args);
4200
4201        if (ref($content) eq 'CODE') {
4202                $content->(@_);
4203        } elsif (ref($content) eq 'SCALAR') {
4204                print esc_html($$content);
4205        } elsif (ref($content) eq 'GLOB' or ref($content) eq 'IO::Handle') {
4206                print <$content>;
4207        } elsif (!ref($content) && defined($content)) {
4208                print $content;
4209        }
4210
4211        print $cgi->end_div;
4212}
4213
4214sub format_timestamp_html {
4215        my $date = shift;
4216        my $strtime = $date->{'rfc2822'};
4217
4218        my (undef, undef, $datetime_class) =
4219                gitweb_get_feature('javascript-timezone');
4220        if ($datetime_class) {
4221                $strtime = qq!<span class="$datetime_class">$strtime</span>!;
4222        }
4223
4224        my $localtime_format = '(%02d:%02d %s)';
4225        if ($date->{'hour_local'} < 6) {
4226                $localtime_format = '(<span class="atnight">%02d:%02d</span> %s)';
4227        }
4228        $strtime .= ' ' .
4229                    sprintf($localtime_format,
4230                            $date->{'hour_local'}, $date->{'minute_local'}, $date->{'tz_local'});
4231
4232        return $strtime;
4233}
4234
4235# Outputs the author name and date in long form
4236sub git_print_authorship {
4237        my $co = shift;
4238        my %opts = @_;
4239        my $tag = $opts{-tag} || 'div';
4240        my $author = $co->{'author_name'};
4241
4242        my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
4243        print "<$tag class=\"author_date\">" .
4244              format_search_author($author, "author", esc_html($author)) .
4245              " [".format_timestamp_html(\%ad)."]".
4246              git_get_avatar($co->{'author_email'}, -pad_before => 1) .
4247              "</$tag>\n";
4248}
4249
4250# Outputs table rows containing the full author or committer information,
4251# in the format expected for 'commit' view (& similar).
4252# Parameters are a commit hash reference, followed by the list of people
4253# to output information for. If the list is empty it defaults to both
4254# author and committer.
4255sub git_print_authorship_rows {
4256        my $co = shift;
4257        # too bad we can't use @people = @_ || ('author', 'committer')
4258        my @people = @_;
4259        @people = ('author', 'committer') unless @people;
4260        foreach my $who (@people) {
4261                my %wd = parse_date($co->{"${who}_epoch"}, $co->{"${who}_tz"});
4262                print "<tr><td>$who</td><td>" .
4263                      format_search_author($co->{"${who}_name"}, $who,
4264                                           esc_html($co->{"${who}_name"})) . " " .
4265                      format_search_author($co->{"${who}_email"}, $who,
4266                                           esc_html("<" . $co->{"${who}_email"} . ">")) .
4267                      "</td><td rowspan=\"2\">" .
4268                      git_get_avatar($co->{"${who}_email"}, -size => 'double') .
4269                      "</td></tr>\n" .
4270                      "<tr>" .
4271                      "<td></td><td>" .
4272                      format_timestamp_html(\%wd) .
4273                      "</td>" .
4274                      "</tr>\n";
4275        }
4276}
4277
4278sub git_print_page_path {
4279        my $name = shift;
4280        my $type = shift;
4281        my $hb = shift;
4282
4283
4284        print "<div class=\"page_path\">";
4285        print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
4286                      -title => 'tree root'}, to_utf8("[$project]"));
4287        print " / ";
4288        if (defined $name) {
4289                my @dirname = split '/', $name;
4290                my $basename = pop @dirname;
4291                my $fullname = '';
4292
4293                foreach my $dir (@dirname) {
4294                        $fullname .= ($fullname ? '/' : '') . $dir;
4295                        print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
4296                                                     hash_base=>$hb),
4297                                      -title => $fullname}, esc_path($dir));
4298                        print " / ";
4299                }
4300                if (defined $type && $type eq 'blob') {
4301                        print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
4302                                                     hash_base=>$hb),
4303                                      -title => $name}, esc_path($basename));
4304                } elsif (defined $type && $type eq 'tree') {
4305                        print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
4306                                                     hash_base=>$hb),
4307                                      -title => $name}, esc_path($basename));
4308                        print " / ";
4309                } else {
4310                        print esc_path($basename);
4311                }
4312        }
4313        print "<br/></div>\n";
4314}
4315
4316sub git_print_log {
4317        my $log = shift;
4318        my %opts = @_;
4319
4320        if ($opts{'-remove_title'}) {
4321                # remove title, i.e. first line of log
4322                shift @$log;
4323        }
4324        # remove leading empty lines
4325        while (defined $log->[0] && $log->[0] eq "") {
4326                shift @$log;
4327        }
4328
4329        # print log
4330        my $signoff = 0;
4331        my $empty = 0;
4332        foreach my $line (@$log) {
4333                if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
4334                        $signoff = 1;
4335                        $empty = 0;
4336                        if (! $opts{'-remove_signoff'}) {
4337                                print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
4338                                next;
4339                        } else {
4340                                # remove signoff lines
4341                                next;
4342                        }
4343                } else {
4344                        $signoff = 0;
4345                }
4346
4347                # print only one empty line
4348                # do not print empty line after signoff
4349                if ($line eq "") {
4350                        next if ($empty || $signoff);
4351                        $empty = 1;
4352                } else {
4353                        $empty = 0;
4354                }
4355
4356                print format_log_line_html($line) . "<br/>\n";
4357        }
4358
4359        if ($opts{'-final_empty_line'}) {
4360                # end with single empty line
4361                print "<br/>\n" unless $empty;
4362        }
4363}
4364
4365# return link target (what link points to)
4366sub git_get_link_target {
4367        my $hash = shift;
4368        my $link_target;
4369
4370        # read link
4371        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
4372                or return;
4373        {
4374                local $/ = undef;
4375                $link_target = <$fd>;
4376        }
4377        close $fd
4378                or return;
4379
4380        return $link_target;
4381}
4382
4383# given link target, and the directory (basedir) the link is in,
4384# return target of link relative to top directory (top tree);
4385# return undef if it is not possible (including absolute links).
4386sub normalize_link_target {
4387        my ($link_target, $basedir) = @_;
4388
4389        # absolute symlinks (beginning with '/') cannot be normalized
4390        return if (substr($link_target, 0, 1) eq '/');
4391
4392        # normalize link target to path from top (root) tree (dir)
4393        my $path;
4394        if ($basedir) {
4395                $path = $basedir . '/' . $link_target;
4396        } else {
4397                # we are in top (root) tree (dir)
4398                $path = $link_target;
4399        }
4400
4401        # remove //, /./, and /../
4402        my @path_parts;
4403        foreach my $part (split('/', $path)) {
4404                # discard '.' and ''
4405                next if (!$part || $part eq '.');
4406                # handle '..'
4407                if ($part eq '..') {
4408                        if (@path_parts) {
4409                                pop @path_parts;
4410                        } else {
4411                                # link leads outside repository (outside top dir)
4412                                return;
4413                        }
4414                } else {
4415                        push @path_parts, $part;
4416                }
4417        }
4418        $path = join('/', @path_parts);
4419
4420        return $path;
4421}
4422
4423# print tree entry (row of git_tree), but without encompassing <tr> element
4424sub git_print_tree_entry {
4425        my ($t, $basedir, $hash_base, $have_blame) = @_;
4426
4427        my %base_key = ();
4428        $base_key{'hash_base'} = $hash_base if defined $hash_base;
4429
4430        # The format of a table row is: mode list link.  Where mode is
4431        # the mode of the entry, list is the name of the entry, an href,
4432        # and link is the action links of the entry.
4433
4434        print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
4435        if (exists $t->{'size'}) {
4436                print "<td class=\"size\">$t->{'size'}</td>\n";
4437        }
4438        if ($t->{'type'} eq "blob") {
4439                print "<td class=\"list\">" .
4440                        $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
4441                                               file_name=>"$basedir$t->{'name'}", %base_key),
4442                                -class => "list"}, esc_path($t->{'name'}));
4443                if (S_ISLNK(oct $t->{'mode'})) {
4444                        my $link_target = git_get_link_target($t->{'hash'});
4445                        if ($link_target) {
4446                                my $norm_target = normalize_link_target($link_target, $basedir);
4447                                if (defined $norm_target) {
4448                                        print " -> " .
4449                                              $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
4450                                                                     file_name=>$norm_target),
4451                                                       -title => $norm_target}, esc_path($link_target));
4452                                } else {
4453                                        print " -> " . esc_path($link_target);
4454                                }
4455                        }
4456                }
4457                print "</td>\n";
4458                print "<td class=\"link\">";
4459                print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
4460                                             file_name=>"$basedir$t->{'name'}", %base_key)},
4461                              "blob");
4462                if ($have_blame) {
4463                        print " | " .
4464                              $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
4465                                                     file_name=>"$basedir$t->{'name'}", %base_key)},
4466                                      "blame");
4467                }
4468                if (defined $hash_base) {
4469                        print " | " .
4470                              $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
4471                                                     hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
4472                                      "history");
4473                }
4474                print " | " .
4475                        $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
4476                                               file_name=>"$basedir$t->{'name'}")},
4477                                "raw");
4478                print "</td>\n";
4479
4480        } elsif ($t->{'type'} eq "tree") {
4481                print "<td class=\"list\">";
4482                print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
4483                                             file_name=>"$basedir$t->{'name'}",
4484                                             %base_key)},
4485                              esc_path($t->{'name'}));
4486                print "</td>\n";
4487                print "<td class=\"link\">";
4488                print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
4489                                             file_name=>"$basedir$t->{'name'}",
4490                                             %base_key)},
4491                              "tree");
4492                if (defined $hash_base) {
4493                        print " | " .
4494                              $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
4495                                                     file_name=>"$basedir$t->{'name'}")},
4496                                      "history");
4497                }
4498                print "</td>\n";
4499        } else {
4500                # unknown object: we can only present history for it
4501                # (this includes 'commit' object, i.e. submodule support)
4502                print "<td class=\"list\">" .
4503                      esc_path($t->{'name'}) .
4504                      "</td>\n";
4505                print "<td class=\"link\">";
4506                if (defined $hash_base) {
4507                        print $cgi->a({-href => href(action=>"history",
4508                                                     hash_base=>$hash_base,
4509                                                     file_name=>"$basedir$t->{'name'}")},
4510                                      "history");
4511                }
4512                print "</td>\n";
4513        }
4514}
4515
4516## ......................................................................
4517## functions printing large fragments of HTML
4518
4519# get pre-image filenames for merge (combined) diff
4520sub fill_from_file_info {
4521        my ($diff, @parents) = @_;
4522
4523        $diff->{'from_file'} = [ ];
4524        $diff->{'from_file'}[$diff->{'nparents'} - 1] = undef;
4525        for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
4526                if ($diff->{'status'}[$i] eq 'R' ||
4527                    $diff->{'status'}[$i] eq 'C') {
4528                        $diff->{'from_file'}[$i] =
4529                                git_get_path_by_hash($parents[$i], $diff->{'from_id'}[$i]);
4530                }
4531        }
4532
4533        return $diff;
4534}
4535
4536# is current raw difftree line of file deletion
4537sub is_deleted {
4538        my $diffinfo = shift;
4539
4540        return $diffinfo->{'to_id'} eq ('0' x 40);
4541}
4542
4543# does patch correspond to [previous] difftree raw line
4544# $diffinfo  - hashref of parsed raw diff format
4545# $patchinfo - hashref of parsed patch diff format
4546#              (the same keys as in $diffinfo)
4547sub is_patch_split {
4548        my ($diffinfo, $patchinfo) = @_;
4549
4550        return defined $diffinfo && defined $patchinfo
4551                && $diffinfo->{'to_file'} eq $patchinfo->{'to_file'};
4552}
4553
4554
4555sub git_difftree_body {
4556        my ($difftree, $hash, @parents) = @_;
4557        my ($parent) = $parents[0];
4558        my $have_blame = gitweb_check_feature('blame');
4559        print "<div class=\"list_head\">\n";
4560        if ($#{$difftree} > 10) {
4561                print(($#{$difftree} + 1) . " files changed:\n");
4562        }
4563        print "</div>\n";
4564
4565        print "<table class=\"" .
4566              (@parents > 1 ? "combined " : "") .
4567              "diff_tree\">\n";
4568
4569        # header only for combined diff in 'commitdiff' view
4570        my $has_header = @$difftree && @parents > 1 && $action eq 'commitdiff';
4571        if ($has_header) {
4572                # table header
4573                print "<thead><tr>\n" .
4574                       "<th></th><th></th>\n"; # filename, patchN link
4575                for (my $i = 0; $i < @parents; $i++) {
4576                        my $par = $parents[$i];
4577                        print "<th>" .
4578                              $cgi->a({-href => href(action=>"commitdiff",
4579                                                     hash=>$hash, hash_parent=>$par),
4580                                       -title => 'commitdiff to parent number ' .
4581                                                  ($i+1) . ': ' . substr($par,0,7)},
4582                                      $i+1) .
4583                              "&nbsp;</th>\n";
4584                }
4585                print "</tr></thead>\n<tbody>\n";
4586        }
4587
4588        my $alternate = 1;
4589        my $patchno = 0;
4590        foreach my $line (@{$difftree}) {
4591                my $diff = parsed_difftree_line($line);
4592
4593                if ($alternate) {
4594                        print "<tr class=\"dark\">\n";
4595                } else {
4596                        print "<tr class=\"light\">\n";
4597                }
4598                $alternate ^= 1;
4599
4600                if (exists $diff->{'nparents'}) { # combined diff
4601
4602                        fill_from_file_info($diff, @parents)
4603                                unless exists $diff->{'from_file'};
4604
4605                        if (!is_deleted($diff)) {
4606                                # file exists in the result (child) commit
4607                                print "<td>" .
4608                                      $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
4609                                                             file_name=>$diff->{'to_file'},
4610                                                             hash_base=>$hash),
4611                                              -class => "list"}, esc_path($diff->{'to_file'})) .
4612                                      "</td>\n";
4613                        } else {
4614                                print "<td>" .
4615                                      esc_path($diff->{'to_file'}) .
4616                                      "</td>\n";
4617                        }
4618
4619                        if ($action eq 'commitdiff') {
4620                                # link to patch
4621                                $patchno++;
4622                                print "<td class=\"link\">" .
4623                                      $cgi->a({-href => href(-anchor=>"patch$patchno")},
4624                                              "patch") .
4625                                      " | " .
4626                                      "</td>\n";
4627                        }
4628
4629                        my $has_history = 0;
4630                        my $not_deleted = 0;
4631                        for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
4632                                my $hash_parent = $parents[$i];
4633                                my $from_hash = $diff->{'from_id'}[$i];
4634                                my $from_path = $diff->{'from_file'}[$i];
4635                                my $status = $diff->{'status'}[$i];
4636
4637                                $has_history ||= ($status ne 'A');
4638                                $not_deleted ||= ($status ne 'D');
4639
4640                                if ($status eq 'A') {
4641                                        print "<td  class=\"link\" align=\"right\"> | </td>\n";
4642                                } elsif ($status eq 'D') {
4643                                        print "<td class=\"link\">" .
4644                                              $cgi->a({-href => href(action=>"blob",
4645                                                                     hash_base=>$hash,
4646                                                                     hash=>$from_hash,
4647                                                                     file_name=>$from_path)},
4648                                                      "blob" . ($i+1)) .
4649                                              " | </td>\n";
4650                                } else {
4651                                        if ($diff->{'to_id'} eq $from_hash) {
4652                                                print "<td class=\"link nochange\">";
4653                                        } else {
4654                                                print "<td class=\"link\">";
4655                                        }
4656                                        print $cgi->a({-href => href(action=>"blobdiff",
4657                                                                     hash=>$diff->{'to_id'},
4658                                                                     hash_parent=>$from_hash,
4659                                                                     hash_base=>$hash,
4660                                                                     hash_parent_base=>$hash_parent,
4661                                                                     file_name=>$diff->{'to_file'},
4662                                                                     file_parent=>$from_path)},
4663                                                      "diff" . ($i+1)) .
4664                                              " | </td>\n";
4665                                }
4666                        }
4667
4668                        print "<td class=\"link\">";
4669                        if ($not_deleted) {
4670                                print $cgi->a({-href => href(action=>"blob",
4671                                                             hash=>$diff->{'to_id'},
4672                                                             file_name=>$diff->{'to_file'},
4673                                                             hash_base=>$hash)},
4674                                              "blob");
4675                                print " | " if ($has_history);
4676                        }
4677                        if ($has_history) {
4678                                print $cgi->a({-href => href(action=>"history",
4679                                                             file_name=>$diff->{'to_file'},
4680                                                             hash_base=>$hash)},
4681                                              "history");
4682                        }
4683                        print "</td>\n";
4684
4685                        print "</tr>\n";
4686                        next; # instead of 'else' clause, to avoid extra indent
4687                }
4688                # else ordinary diff
4689
4690                my ($to_mode_oct, $to_mode_str, $to_file_type);
4691                my ($from_mode_oct, $from_mode_str, $from_file_type);
4692                if ($diff->{'to_mode'} ne ('0' x 6)) {
4693                        $to_mode_oct = oct $diff->{'to_mode'};
4694                        if (S_ISREG($to_mode_oct)) { # only for regular file
4695                                $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
4696                        }
4697                        $to_file_type = file_type($diff->{'to_mode'});
4698                }
4699                if ($diff->{'from_mode'} ne ('0' x 6)) {
4700                        $from_mode_oct = oct $diff->{'from_mode'};
4701                        if (S_ISREG($from_mode_oct)) { # only for regular file
4702                                $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
4703                        }
4704                        $from_file_type = file_type($diff->{'from_mode'});
4705                }
4706
4707                if ($diff->{'status'} eq "A") { # created
4708                        my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
4709                        $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
4710                        $mode_chng   .= "]</span>";
4711                        print "<td>";
4712                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
4713                                                     hash_base=>$hash, file_name=>$diff->{'file'}),
4714                                      -class => "list"}, esc_path($diff->{'file'}));
4715                        print "</td>\n";
4716                        print "<td>$mode_chng</td>\n";
4717                        print "<td class=\"link\">";
4718                        if ($action eq 'commitdiff') {
4719                                # link to patch
4720                                $patchno++;
4721                                print $cgi->a({-href => href(-anchor=>"patch$patchno")},
4722                                              "patch") .
4723                                      " | ";
4724                        }
4725                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
4726                                                     hash_base=>$hash, file_name=>$diff->{'file'})},
4727                                      "blob");
4728                        print "</td>\n";
4729
4730                } elsif ($diff->{'status'} eq "D") { # deleted
4731                        my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
4732                        print "<td>";
4733                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
4734                                                     hash_base=>$parent, file_name=>$diff->{'file'}),
4735                                       -class => "list"}, esc_path($diff->{'file'}));
4736                        print "</td>\n";
4737                        print "<td>$mode_chng</td>\n";
4738                        print "<td class=\"link\">";
4739                        if ($action eq 'commitdiff') {
4740                                # link to patch
4741                                $patchno++;
4742                                print $cgi->a({-href => href(-anchor=>"patch$patchno")},
4743                                              "patch") .
4744                                      " | ";
4745                        }
4746                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
4747                                                     hash_base=>$parent, file_name=>$diff->{'file'})},
4748                                      "blob") . " | ";
4749                        if ($have_blame) {
4750                                print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
4751                                                             file_name=>$diff->{'file'})},
4752                                              "blame") . " | ";
4753                        }
4754                        print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
4755                                                     file_name=>$diff->{'file'})},
4756                                      "history");
4757                        print "</td>\n";
4758
4759                } elsif ($diff->{'status'} eq "M" || $diff->{'status'} eq "T") { # modified, or type changed
4760                        my $mode_chnge = "";
4761                        if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
4762                                $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
4763                                if ($from_file_type ne $to_file_type) {
4764                                        $mode_chnge .= " from $from_file_type to $to_file_type";
4765                                }
4766                                if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
4767                                        if ($from_mode_str && $to_mode_str) {
4768                                                $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
4769                                        } elsif ($to_mode_str) {
4770                                                $mode_chnge .= " mode: $to_mode_str";
4771                                        }
4772                                }
4773                                $mode_chnge .= "]</span>\n";
4774                        }
4775                        print "<td>";
4776                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
4777                                                     hash_base=>$hash, file_name=>$diff->{'file'}),
4778                                      -class => "list"}, esc_path($diff->{'file'}));
4779                        print "</td>\n";
4780                        print "<td>$mode_chnge</td>\n";
4781                        print "<td class=\"link\">";
4782                        if ($action eq 'commitdiff') {
4783                                # link to patch
4784                                $patchno++;
4785                                print $cgi->a({-href => href(-anchor=>"patch$patchno")},
4786                                              "patch") .
4787                                      " | ";
4788                        } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
4789                                # "commit" view and modified file (not onlu mode changed)
4790                                print $cgi->a({-href => href(action=>"blobdiff",
4791                                                             hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
4792                                                             hash_base=>$hash, hash_parent_base=>$parent,
4793                                                             file_name=>$diff->{'file'})},
4794                                              "diff") .
4795                                      " | ";
4796                        }
4797                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
4798                                                     hash_base=>$hash, file_name=>$diff->{'file'})},
4799                                       "blob") . " | ";
4800                        if ($have_blame) {
4801                                print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
4802                                                             file_name=>$diff->{'file'})},
4803                                              "blame") . " | ";
4804                        }
4805                        print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
4806                                                     file_name=>$diff->{'file'})},
4807                                      "history");
4808                        print "</td>\n";
4809
4810                } elsif ($diff->{'status'} eq "R" || $diff->{'status'} eq "C") { # renamed or copied
4811                        my %status_name = ('R' => 'moved', 'C' => 'copied');
4812                        my $nstatus = $status_name{$diff->{'status'}};
4813                        my $mode_chng = "";
4814                        if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
4815                                # mode also for directories, so we cannot use $to_mode_str
4816                                $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
4817                        }
4818                        print "<td>" .
4819                              $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
4820                                                     hash=>$diff->{'to_id'}, file_name=>$diff->{'to_file'}),
4821                                      -class => "list"}, esc_path($diff->{'to_file'})) . "</td>\n" .
4822                              "<td><span class=\"file_status $nstatus\">[$nstatus from " .
4823                              $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
4824                                                     hash=>$diff->{'from_id'}, file_name=>$diff->{'from_file'}),
4825                                      -class => "list"}, esc_path($diff->{'from_file'})) .
4826                              " with " . (int $diff->{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
4827                              "<td class=\"link\">";
4828                        if ($action eq 'commitdiff') {
4829                                # link to patch
4830                                $patchno++;
4831                                print $cgi->a({-href => href(-anchor=>"patch$patchno")},
4832                                              "patch") .
4833                                      " | ";
4834                        } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
4835                                # "commit" view and modified file (not only pure rename or copy)
4836                                print $cgi->a({-href => href(action=>"blobdiff",
4837                                                             hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
4838                                                             hash_base=>$hash, hash_parent_base=>$parent,
4839                                                             file_name=>$diff->{'to_file'}, file_parent=>$diff->{'from_file'})},
4840                                              "diff") .
4841                                      " | ";
4842                        }
4843                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
4844                                                     hash_base=>$parent, file_name=>$diff->{'to_file'})},
4845                                      "blob") . " | ";
4846                        if ($have_blame) {
4847                                print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
4848                                                             file_name=>$diff->{'to_file'})},
4849                                              "blame") . " | ";
4850                        }
4851                        print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
4852                                                    file_name=>$diff->{'to_file'})},
4853                                      "history");
4854                        print "</td>\n";
4855
4856                } # we should not encounter Unmerged (U) or Unknown (X) status
4857                print "</tr>\n";
4858        }
4859        print "</tbody>" if $has_header;
4860        print "</table>\n";
4861}
4862
4863sub git_patchset_body {
4864        my ($fd, $difftree, $hash, @hash_parents) = @_;
4865        my ($hash_parent) = $hash_parents[0];
4866
4867        my $is_combined = (@hash_parents > 1);
4868        my $patch_idx = 0;
4869        my $patch_number = 0;
4870        my $patch_line;
4871        my $diffinfo;
4872        my $to_name;
4873        my (%from, %to);
4874
4875        print "<div class=\"patchset\">\n";
4876
4877        # skip to first patch
4878        while ($patch_line = <$fd>) {
4879                chomp $patch_line;
4880
4881                last if ($patch_line =~ m/^diff /);
4882        }
4883
4884 PATCH:
4885        while ($patch_line) {
4886
4887                # parse "git diff" header line
4888                if ($patch_line =~ m/^diff --git (\"(?:[^\\\"]*(?:\\.[^\\\"]*)*)\"|[^ "]*) (.*)$/) {
4889                        # $1 is from_name, which we do not use
4890                        $to_name = unquote($2);
4891                        $to_name =~ s!^b/!!;
4892                } elsif ($patch_line =~ m/^diff --(cc|combined) ("?.*"?)$/) {
4893                        # $1 is 'cc' or 'combined', which we do not use
4894                        $to_name = unquote($2);
4895                } else {
4896                        $to_name = undef;
4897                }
4898
4899                # check if current patch belong to current raw line
4900                # and parse raw git-diff line if needed
4901                if (is_patch_split($diffinfo, { 'to_file' => $to_name })) {
4902                        # this is continuation of a split patch
4903                        print "<div class=\"patch cont\">\n";
4904                } else {
4905                        # advance raw git-diff output if needed
4906                        $patch_idx++ if defined $diffinfo;
4907
4908                        # read and prepare patch information
4909                        $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
4910
4911                        # compact combined diff output can have some patches skipped
4912                        # find which patch (using pathname of result) we are at now;
4913                        if ($is_combined) {
4914                                while ($to_name ne $diffinfo->{'to_file'}) {
4915                                        print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
4916                                              format_diff_cc_simplified($diffinfo, @hash_parents) .
4917                                              "</div>\n";  # class="patch"
4918
4919                                        $patch_idx++;
4920                                        $patch_number++;
4921
4922                                        last if $patch_idx > $#$difftree;
4923                                        $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
4924                                }
4925                        }
4926
4927                        # modifies %from, %to hashes
4928                        parse_from_to_diffinfo($diffinfo, \%from, \%to, @hash_parents);
4929
4930                        # this is first patch for raw difftree line with $patch_idx index
4931                        # we index @$difftree array from 0, but number patches from 1
4932                        print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
4933                }
4934
4935                # git diff header
4936                #assert($patch_line =~ m/^diff /) if DEBUG;
4937                #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
4938                $patch_number++;
4939                # print "git diff" header
4940                print format_git_diff_header_line($patch_line, $diffinfo,
4941                                                  \%from, \%to);
4942
4943                # print extended diff header
4944                print "<div class=\"diff extended_header\">\n";
4945        EXTENDED_HEADER:
4946                while ($patch_line = <$fd>) {
4947                        chomp $patch_line;
4948
4949                        last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
4950
4951                        print format_extended_diff_header_line($patch_line, $diffinfo,
4952                                                               \%from, \%to);
4953                }
4954                print "</div>\n"; # class="diff extended_header"
4955
4956                # from-file/to-file diff header
4957                if (! $patch_line) {
4958                        print "</div>\n"; # class="patch"
4959                        last PATCH;
4960                }
4961                next PATCH if ($patch_line =~ m/^diff /);
4962                #assert($patch_line =~ m/^---/) if DEBUG;
4963
4964                my $last_patch_line = $patch_line;
4965                $patch_line = <$fd>;
4966                chomp $patch_line;
4967                #assert($patch_line =~ m/^\+\+\+/) if DEBUG;
4968
4969                print format_diff_from_to_header($last_patch_line, $patch_line,
4970                                                 $diffinfo, \%from, \%to,
4971                                                 @hash_parents);
4972
4973                # the patch itself
4974        LINE:
4975                while ($patch_line = <$fd>) {
4976                        chomp $patch_line;
4977
4978                        next PATCH if ($patch_line =~ m/^diff /);
4979
4980                        print format_diff_line($patch_line, \%from, \%to);
4981                }
4982
4983        } continue {
4984                print "</div>\n"; # class="patch"
4985        }
4986
4987        # for compact combined (--cc) format, with chunk and patch simplification
4988        # the patchset might be empty, but there might be unprocessed raw lines
4989        for (++$patch_idx if $patch_number > 0;
4990             $patch_idx < @$difftree;
4991             ++$patch_idx) {
4992                # read and prepare patch information
4993                $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
4994
4995                # generate anchor for "patch" links in difftree / whatchanged part
4996                print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
4997                      format_diff_cc_simplified($diffinfo, @hash_parents) .
4998                      "</div>\n";  # class="patch"
4999
5000                $patch_number++;
5001        }
5002
5003        if ($patch_number == 0) {
5004                if (@hash_parents > 1) {
5005                        print "<div class=\"diff nodifferences\">Trivial merge</div>\n";
5006                } else {
5007                        print "<div class=\"diff nodifferences\">No differences found</div>\n";
5008                }
5009        }
5010
5011        print "</div>\n"; # class="patchset"
5012}
5013
5014# . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5015
5016# fills project list info (age, description, owner, category, forks)
5017# for each project in the list, removing invalid projects from
5018# returned list
5019# NOTE: modifies $projlist, but does not remove entries from it
5020sub fill_project_list_info {
5021        my $projlist = shift;
5022        my @projects;
5023
5024        my $show_ctags = gitweb_check_feature('ctags');
5025 PROJECT:
5026        foreach my $pr (@$projlist) {
5027                my (@activity) = git_get_last_activity($pr->{'path'});
5028                unless (@activity) {
5029                        next PROJECT;
5030                }
5031                ($pr->{'age'}, $pr->{'age_string'}) = @activity;
5032                if (!defined $pr->{'descr'}) {
5033                        my $descr = git_get_project_description($pr->{'path'}) || "";
5034                        $descr = to_utf8($descr);
5035                        $pr->{'descr_long'} = $descr;
5036                        $pr->{'descr'} = chop_str($descr, $projects_list_description_width, 5);
5037                }
5038                if (!defined $pr->{'owner'}) {
5039                        $pr->{'owner'} = git_get_project_owner("$pr->{'path'}") || "";
5040                }
5041                if ($show_ctags) {
5042                        $pr->{'ctags'} = git_get_project_ctags($pr->{'path'});
5043                }
5044                if ($projects_list_group_categories && !defined $pr->{'category'}) {
5045                        my $cat = git_get_project_category($pr->{'path'}) ||
5046                                                           $project_list_default_category;
5047                        $pr->{'category'} = to_utf8($cat);
5048                }
5049
5050                push @projects, $pr;
5051        }
5052
5053        return @projects;
5054}
5055
5056sub sort_projects_list {
5057        my ($projlist, $order) = @_;
5058        my @projects;
5059
5060        my %order_info = (
5061                project => { key => 'path', type => 'str' },
5062                descr => { key => 'descr_long', type => 'str' },
5063                owner => { key => 'owner', type => 'str' },
5064                age => { key => 'age', type => 'num' }
5065        );
5066        my $oi = $order_info{$order};
5067        return @$projlist unless defined $oi;
5068        if ($oi->{'type'} eq 'str') {
5069                @projects = sort {$a->{$oi->{'key'}} cmp $b->{$oi->{'key'}}} @$projlist;
5070        } else {
5071                @projects = sort {$a->{$oi->{'key'}} <=> $b->{$oi->{'key'}}} @$projlist;
5072        }
5073
5074        return @projects;
5075}
5076
5077# returns a hash of categories, containing the list of project
5078# belonging to each category
5079sub build_projlist_by_category {
5080        my ($projlist, $from, $to) = @_;
5081        my %categories;
5082
5083        $from = 0 unless defined $from;
5084        $to = $#$projlist if (!defined $to || $#$projlist < $to);
5085
5086        for (my $i = $from; $i <= $to; $i++) {
5087                my $pr = $projlist->[$i];
5088                push @{$categories{ $pr->{'category'} }}, $pr;
5089        }
5090
5091        return wantarray ? %categories : \%categories;
5092}
5093
5094# print 'sort by' <th> element, generating 'sort by $name' replay link
5095# if that order is not selected
5096sub print_sort_th {
5097        print format_sort_th(@_);
5098}
5099
5100sub format_sort_th {
5101        my ($name, $order, $header) = @_;
5102        my $sort_th = "";
5103        $header ||= ucfirst($name);
5104
5105        if ($order eq $name) {
5106                $sort_th .= "<th>$header</th>\n";
5107        } else {
5108                $sort_th .= "<th>" .
5109                            $cgi->a({-href => href(-replay=>1, order=>$name),
5110                                     -class => "header"}, $header) .
5111                            "</th>\n";
5112        }
5113
5114        return $sort_th;
5115}
5116
5117sub git_project_list_rows {
5118        my ($projlist, $from, $to, $check_forks) = @_;
5119
5120        $from = 0 unless defined $from;
5121        $to = $#$projlist if (!defined $to || $#$projlist < $to);
5122
5123        my $alternate = 1;
5124        for (my $i = $from; $i <= $to; $i++) {
5125                my $pr = $projlist->[$i];
5126
5127                if ($alternate) {
5128                        print "<tr class=\"dark\">\n";
5129                } else {
5130                        print "<tr class=\"light\">\n";
5131                }
5132                $alternate ^= 1;
5133
5134                if ($check_forks) {
5135                        print "<td>";
5136                        if ($pr->{'forks'}) {
5137                                my $nforks = scalar @{$pr->{'forks'}};
5138                                if ($nforks > 0) {
5139                                        print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks"),
5140                                                       -title => "$nforks forks"}, "+");
5141                                } else {
5142                                        print $cgi->span({-title => "$nforks forks"}, "+");
5143                                }
5144                        }
5145                        print "</td>\n";
5146                }
5147                print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
5148                                        -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
5149                      "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
5150                                        -class => "list", -title => $pr->{'descr_long'}},
5151                                        esc_html($pr->{'descr'})) . "</td>\n" .
5152                      "<td><i>" . chop_and_escape_str($pr->{'owner'}, 15) . "</i></td>\n";
5153                print "<td class=\"". age_class($pr->{'age'}) . "\">" .
5154                      (defined $pr->{'age_string'} ? $pr->{'age_string'} : "No commits") . "</td>\n" .
5155                      "<td class=\"link\">" .
5156                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
5157                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
5158                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
5159                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
5160                      ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
5161                      "</td>\n" .
5162                      "</tr>\n";
5163        }
5164}
5165
5166sub git_project_list_body {
5167        # actually uses global variable $project
5168        my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
5169        my @projects = @$projlist;
5170
5171        my $check_forks = gitweb_check_feature('forks');
5172        my $show_ctags  = gitweb_check_feature('ctags');
5173        my $tagfilter = $show_ctags ? $cgi->param('by_tag') : undef;
5174        $check_forks = undef
5175                if ($tagfilter || $searchtext);
5176
5177        # filtering out forks before filling info allows to do less work
5178        @projects = filter_forks_from_projects_list(\@projects)
5179                if ($check_forks);
5180        @projects = fill_project_list_info(\@projects);
5181        # searching projects require filling to be run before it
5182        @projects = search_projects_list(\@projects,
5183                                         'searchtext' => $searchtext,
5184                                         'tagfilter'  => $tagfilter)
5185                if ($tagfilter || $searchtext);
5186
5187        $order ||= $default_projects_order;
5188        $from = 0 unless defined $from;
5189        $to = $#projects if (!defined $to || $#projects < $to);
5190
5191        # short circuit
5192        if ($from > $to) {
5193                print "<center>\n".
5194                      "<b>No such projects found</b><br />\n".
5195                      "Click ".$cgi->a({-href=>href(project=>undef)},"here")." to view all projects<br />\n".
5196                      "</center>\n<br />\n";
5197                return;
5198        }
5199
5200        @projects = sort_projects_list(\@projects, $order);
5201
5202        if ($show_ctags) {
5203                my $ctags = git_gather_all_ctags(\@projects);
5204                my $cloud = git_populate_project_tagcloud($ctags);
5205                print git_show_project_tagcloud($cloud, 64);
5206        }
5207
5208        print "<table class=\"project_list\">\n";
5209        unless ($no_header) {
5210                print "<tr>\n";
5211                if ($check_forks) {
5212                        print "<th></th>\n";
5213                }
5214                print_sort_th('project', $order, 'Project');
5215                print_sort_th('descr', $order, 'Description');
5216                print_sort_th('owner', $order, 'Owner');
5217                print_sort_th('age', $order, 'Last Change');
5218                print "<th></th>\n" . # for links
5219                      "</tr>\n";
5220        }
5221
5222        if ($projects_list_group_categories) {
5223                # only display categories with projects in the $from-$to window
5224                @projects = sort {$a->{'category'} cmp $b->{'category'}} @projects[$from..$to];
5225                my %categories = build_projlist_by_category(\@projects, $from, $to);
5226                foreach my $cat (sort keys %categories) {
5227                        unless ($cat eq "") {
5228                                print "<tr>\n";
5229                                if ($check_forks) {
5230                                        print "<td></td>\n";
5231                                }
5232                                print "<td class=\"category\" colspan=\"5\">".esc_html($cat)."</td>\n";
5233                                print "</tr>\n";
5234                        }
5235
5236                        git_project_list_rows($categories{$cat}, undef, undef, $check_forks);
5237                }
5238        } else {
5239                git_project_list_rows(\@projects, $from, $to, $check_forks);
5240        }
5241
5242        if (defined $extra) {
5243                print "<tr>\n";
5244                if ($check_forks) {
5245                        print "<td></td>\n";
5246                }
5247                print "<td colspan=\"5\">$extra</td>\n" .
5248                      "</tr>\n";
5249        }
5250        print "</table>\n";
5251}
5252
5253sub git_log_body {
5254        # uses global variable $project
5255        my ($commitlist, $from, $to, $refs, $extra) = @_;
5256
5257        $from = 0 unless defined $from;
5258        $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
5259
5260        for (my $i = 0; $i <= $to; $i++) {
5261                my %co = %{$commitlist->[$i]};
5262                next if !%co;
5263                my $commit = $co{'id'};
5264                my $ref = format_ref_marker($refs, $commit);
5265                git_print_header_div('commit',
5266                               "<span class=\"age\">$co{'age_string'}</span>" .
5267                               esc_html($co{'title'}) . $ref,
5268                               $commit);
5269                print "<div class=\"title_text\">\n" .
5270                      "<div class=\"log_link\">\n" .
5271                      $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
5272                      " | " .
5273                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
5274                      " | " .
5275                      $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
5276                      "<br/>\n" .
5277                      "</div>\n";
5278                      git_print_authorship(\%co, -tag => 'span');
5279                      print "<br/>\n</div>\n";
5280
5281                print "<div class=\"log_body\">\n";
5282                git_print_log($co{'comment'}, -final_empty_line=> 1);
5283                print "</div>\n";
5284        }
5285        if ($extra) {
5286                print "<div class=\"page_nav\">\n";
5287                print "$extra\n";
5288                print "</div>\n";
5289        }
5290}
5291
5292sub git_shortlog_body {
5293        # uses global variable $project
5294        my ($commitlist, $from, $to, $refs, $extra) = @_;
5295
5296        $from = 0 unless defined $from;
5297        $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
5298
5299        print "<table class=\"shortlog\">\n";
5300        my $alternate = 1;
5301        for (my $i = $from; $i <= $to; $i++) {
5302                my %co = %{$commitlist->[$i]};
5303                my $commit = $co{'id'};
5304                my $ref = format_ref_marker($refs, $commit);
5305                if ($alternate) {
5306                        print "<tr class=\"dark\">\n";
5307                } else {
5308                        print "<tr class=\"light\">\n";
5309                }
5310                $alternate ^= 1;
5311                # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
5312                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
5313                      format_author_html('td', \%co, 10) . "<td>";
5314                print format_subject_html($co{'title'}, $co{'title_short'},
5315                                          href(action=>"commit", hash=>$commit), $ref);
5316                print "</td>\n" .
5317                      "<td class=\"link\">" .
5318                      $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
5319                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
5320                      $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
5321                my $snapshot_links = format_snapshot_links($commit);
5322                if (defined $snapshot_links) {
5323                        print " | " . $snapshot_links;
5324                }
5325                print "</td>\n" .
5326                      "</tr>\n";
5327        }
5328        if (defined $extra) {
5329                print "<tr>\n" .
5330                      "<td colspan=\"4\">$extra</td>\n" .
5331                      "</tr>\n";
5332        }
5333        print "</table>\n";
5334}
5335
5336sub git_history_body {
5337        # Warning: assumes constant type (blob or tree) during history
5338        my ($commitlist, $from, $to, $refs, $extra,
5339            $file_name, $file_hash, $ftype) = @_;
5340
5341        $from = 0 unless defined $from;
5342        $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
5343
5344        print "<table class=\"history\">\n";
5345        my $alternate = 1;
5346        for (my $i = $from; $i <= $to; $i++) {
5347                my %co = %{$commitlist->[$i]};
5348                if (!%co) {
5349                        next;
5350                }
5351                my $commit = $co{'id'};
5352
5353                my $ref = format_ref_marker($refs, $commit);
5354
5355                if ($alternate) {
5356                        print "<tr class=\"dark\">\n";
5357                } else {
5358                        print "<tr class=\"light\">\n";
5359                }
5360                $alternate ^= 1;
5361                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
5362        # shortlog:   format_author_html('td', \%co, 10)
5363                      format_author_html('td', \%co, 15, 3) . "<td>";
5364                # originally git_history used chop_str($co{'title'}, 50)
5365                print format_subject_html($co{'title'}, $co{'title_short'},
5366                                          href(action=>"commit", hash=>$commit), $ref);
5367                print "</td>\n" .
5368                      "<td class=\"link\">" .
5369                      $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
5370                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
5371
5372                if ($ftype eq 'blob') {
5373                        my $blob_current = $file_hash;
5374                        my $blob_parent  = git_get_hash_by_path($commit, $file_name);
5375                        if (defined $blob_current && defined $blob_parent &&
5376                                        $blob_current ne $blob_parent) {
5377                                print " | " .
5378                                        $cgi->a({-href => href(action=>"blobdiff",
5379                                                               hash=>$blob_current, hash_parent=>$blob_parent,
5380                                                               hash_base=>$hash_base, hash_parent_base=>$commit,
5381                                                               file_name=>$file_name)},
5382                                                "diff to current");
5383                        }
5384                }
5385                print "</td>\n" .
5386                      "</tr>\n";
5387        }
5388        if (defined $extra) {
5389                print "<tr>\n" .
5390                      "<td colspan=\"4\">$extra</td>\n" .
5391                      "</tr>\n";
5392        }
5393        print "</table>\n";
5394}
5395
5396sub git_tags_body {
5397        # uses global variable $project
5398        my ($taglist, $from, $to, $extra) = @_;
5399        $from = 0 unless defined $from;
5400        $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
5401
5402        print "<table class=\"tags\">\n";
5403        my $alternate = 1;
5404        for (my $i = $from; $i <= $to; $i++) {
5405                my $entry = $taglist->[$i];
5406                my %tag = %$entry;
5407                my $comment = $tag{'subject'};
5408                my $comment_short;
5409                if (defined $comment) {
5410                        $comment_short = chop_str($comment, 30, 5);
5411                }
5412                if ($alternate) {
5413                        print "<tr class=\"dark\">\n";
5414                } else {
5415                        print "<tr class=\"light\">\n";
5416                }
5417                $alternate ^= 1;
5418                if (defined $tag{'age'}) {
5419                        print "<td><i>$tag{'age'}</i></td>\n";
5420                } else {
5421                        print "<td></td>\n";
5422                }
5423                print "<td>" .
5424                      $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
5425                               -class => "list name"}, esc_html($tag{'name'})) .
5426                      "</td>\n" .
5427                      "<td>";
5428                if (defined $comment) {
5429                        print format_subject_html($comment, $comment_short,
5430                                                  href(action=>"tag", hash=>$tag{'id'}));
5431                }
5432                print "</td>\n" .
5433                      "<td class=\"selflink\">";
5434                if ($tag{'type'} eq "tag") {
5435                        print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
5436                } else {
5437                        print "&nbsp;";
5438                }
5439                print "</td>\n" .
5440                      "<td class=\"link\">" . " | " .
5441                      $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
5442                if ($tag{'reftype'} eq "commit") {
5443                        print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'fullname'})}, "shortlog") .
5444                              " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'fullname'})}, "log");
5445                } elsif ($tag{'reftype'} eq "blob") {
5446                        print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
5447                }
5448                print "</td>\n" .
5449                      "</tr>";
5450        }
5451        if (defined $extra) {
5452                print "<tr>\n" .
5453                      "<td colspan=\"5\">$extra</td>\n" .
5454                      "</tr>\n";
5455        }
5456        print "</table>\n";
5457}
5458
5459sub git_heads_body {
5460        # uses global variable $project
5461        my ($headlist, $head, $from, $to, $extra) = @_;
5462        $from = 0 unless defined $from;
5463        $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
5464
5465        print "<table class=\"heads\">\n";
5466        my $alternate = 1;
5467        for (my $i = $from; $i <= $to; $i++) {
5468                my $entry = $headlist->[$i];
5469                my %ref = %$entry;
5470                my $curr = $ref{'id'} eq $head;
5471                if ($alternate) {
5472                        print "<tr class=\"dark\">\n";
5473                } else {
5474                        print "<tr class=\"light\">\n";
5475                }
5476                $alternate ^= 1;
5477                print "<td><i>$ref{'age'}</i></td>\n" .
5478                      ($curr ? "<td class=\"current_head\">" : "<td>") .
5479                      $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'fullname'}),
5480                               -class => "list name"},esc_html($ref{'name'})) .
5481                      "</td>\n" .
5482                      "<td class=\"link\">" .
5483                      $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'fullname'})}, "shortlog") . " | " .
5484                      $cgi->a({-href => href(action=>"log", hash=>$ref{'fullname'})}, "log") . " | " .
5485                      $cgi->a({-href => href(action=>"tree", hash=>$ref{'fullname'}, hash_base=>$ref{'fullname'})}, "tree") .
5486                      "</td>\n" .
5487                      "</tr>";
5488        }
5489        if (defined $extra) {
5490                print "<tr>\n" .
5491                      "<td colspan=\"3\">$extra</td>\n" .
5492                      "</tr>\n";
5493        }
5494        print "</table>\n";
5495}
5496
5497# Display a single remote block
5498sub git_remote_block {
5499        my ($remote, $rdata, $limit, $head) = @_;
5500
5501        my $heads = $rdata->{'heads'};
5502        my $fetch = $rdata->{'fetch'};
5503        my $push = $rdata->{'push'};
5504
5505        my $urls_table = "<table class=\"projects_list\">\n" ;
5506
5507        if (defined $fetch) {
5508                if ($fetch eq $push) {
5509                        $urls_table .= format_repo_url("URL", $fetch);
5510                } else {
5511                        $urls_table .= format_repo_url("Fetch URL", $fetch);
5512                        $urls_table .= format_repo_url("Push URL", $push) if defined $push;
5513                }
5514        } elsif (defined $push) {
5515                $urls_table .= format_repo_url("Push URL", $push);
5516        } else {
5517                $urls_table .= format_repo_url("", "No remote URL");
5518        }
5519
5520        $urls_table .= "</table>\n";
5521
5522        my $dots;
5523        if (defined $limit && $limit < @$heads) {
5524                $dots = $cgi->a({-href => href(action=>"remotes", hash=>$remote)}, "...");
5525        }
5526
5527        print $urls_table;
5528        git_heads_body($heads, $head, 0, $limit, $dots);
5529}
5530
5531# Display a list of remote names with the respective fetch and push URLs
5532sub git_remotes_list {
5533        my ($remotedata, $limit) = @_;
5534        print "<table class=\"heads\">\n";
5535        my $alternate = 1;
5536        my @remotes = sort keys %$remotedata;
5537
5538        my $limited = $limit && $limit < @remotes;
5539
5540        $#remotes = $limit - 1 if $limited;
5541
5542        while (my $remote = shift @remotes) {
5543                my $rdata = $remotedata->{$remote};
5544                my $fetch = $rdata->{'fetch'};
5545                my $push = $rdata->{'push'};
5546                if ($alternate) {
5547                        print "<tr class=\"dark\">\n";
5548                } else {
5549                        print "<tr class=\"light\">\n";
5550                }
5551                $alternate ^= 1;
5552                print "<td>" .
5553                      $cgi->a({-href=> href(action=>'remotes', hash=>$remote),
5554                               -class=> "list name"},esc_html($remote)) .
5555                      "</td>";
5556                print "<td class=\"link\">" .
5557                      (defined $fetch ? $cgi->a({-href=> $fetch}, "fetch") : "fetch") .
5558                      " | " .
5559                      (defined $push ? $cgi->a({-href=> $push}, "push") : "push") .
5560                      "</td>";
5561
5562                print "</tr>\n";
5563        }
5564
5565        if ($limited) {
5566                print "<tr>\n" .
5567                      "<td colspan=\"3\">" .
5568                      $cgi->a({-href => href(action=>"remotes")}, "...") .
5569                      "</td>\n" . "</tr>\n";
5570        }
5571
5572        print "</table>";
5573}
5574
5575# Display remote heads grouped by remote, unless there are too many
5576# remotes, in which case we only display the remote names
5577sub git_remotes_body {
5578        my ($remotedata, $limit, $head) = @_;
5579        if ($limit and $limit < keys %$remotedata) {
5580                git_remotes_list($remotedata, $limit);
5581        } else {
5582                fill_remote_heads($remotedata);
5583                while (my ($remote, $rdata) = each %$remotedata) {
5584                        git_print_section({-class=>"remote", -id=>$remote},
5585                                ["remotes", $remote, $remote], sub {
5586                                        git_remote_block($remote, $rdata, $limit, $head);
5587                                });
5588                }
5589        }
5590}
5591
5592sub git_search_message {
5593        my %co = @_;
5594
5595        my $greptype;
5596        if ($searchtype eq 'commit') {
5597                $greptype = "--grep=";
5598        } elsif ($searchtype eq 'author') {
5599                $greptype = "--author=";
5600        } elsif ($searchtype eq 'committer') {
5601                $greptype = "--committer=";
5602        }
5603        $greptype .= $searchtext;
5604        my @commitlist = parse_commits($hash, 101, (100 * $page), undef,
5605                                       $greptype, '--regexp-ignore-case',
5606                                       $search_use_regexp ? '--extended-regexp' : '--fixed-strings');
5607
5608        my $paging_nav = '';
5609        if ($page > 0) {
5610                $paging_nav .=
5611                        $cgi->a({-href => href(-replay=>1, page=>undef)},
5612                                "first") .
5613                        " &sdot; " .
5614                        $cgi->a({-href => href(-replay=>1, page=>$page-1),
5615                                 -accesskey => "p", -title => "Alt-p"}, "prev");
5616        } else {
5617                $paging_nav .= "first &sdot; prev";
5618        }
5619        my $next_link = '';
5620        if ($#commitlist >= 100) {
5621                $next_link =
5622                        $cgi->a({-href => href(-replay=>1, page=>$page+1),
5623                                 -accesskey => "n", -title => "Alt-n"}, "next");
5624                $paging_nav .= " &sdot; $next_link";
5625        } else {
5626                $paging_nav .= " &sdot; next";
5627        }
5628
5629        git_header_html();
5630
5631        git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
5632        git_print_header_div('commit', esc_html($co{'title'}), $hash);
5633        if ($page == 0 && !@commitlist) {
5634                print "<p>No match.</p>\n";
5635        } else {
5636                git_search_grep_body(\@commitlist, 0, 99, $next_link);
5637        }
5638
5639        git_footer_html();
5640}
5641
5642sub git_search_changes {
5643        my %co = @_;
5644
5645        local $/ = "\n";
5646        open my $fd, '-|', git_cmd(), '--no-pager', 'log', @diff_opts,
5647                '--pretty=format:%H', '--no-abbrev', '--raw', "-S$searchtext",
5648                ($search_use_regexp ? '--pickaxe-regex' : ())
5649                        or die_error(500, "Open git-log failed");
5650
5651        git_header_html();
5652
5653        git_print_page_nav('','', $hash,$co{'tree'},$hash);
5654        git_print_header_div('commit', esc_html($co{'title'}), $hash);
5655
5656        print "<table class=\"pickaxe search\">\n";
5657        my $alternate = 1;
5658        undef %co;
5659        my @files;
5660        while (my $line = <$fd>) {
5661                chomp $line;
5662                next unless $line;
5663
5664                my %set = parse_difftree_raw_line($line);
5665                if (defined $set{'commit'}) {
5666                        # finish previous commit
5667                        if (%co) {
5668                                print "</td>\n" .
5669                                      "<td class=\"link\">" .
5670                                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})},
5671                                              "commit") .
5672                                      " | " .
5673                                      $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'},
5674                                                             hash_base=>$co{'id'})},
5675                                              "tree") .
5676                                      "</td>\n" .
5677                                      "</tr>\n";
5678                        }
5679
5680                        if ($alternate) {
5681                                print "<tr class=\"dark\">\n";
5682                        } else {
5683                                print "<tr class=\"light\">\n";
5684                        }
5685                        $alternate ^= 1;
5686                        %co = parse_commit($set{'commit'});
5687                        my $author = chop_and_escape_str($co{'author_name'}, 15, 5);
5688                        print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
5689                              "<td><i>$author</i></td>\n" .
5690                              "<td>" .
5691                              $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
5692                                      -class => "list subject"},
5693                                      chop_and_escape_str($co{'title'}, 50) . "<br/>");
5694                } elsif (defined $set{'to_id'}) {
5695                        next if ($set{'to_id'} =~ m/^0{40}$/);
5696
5697                        print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
5698                                                     hash=>$set{'to_id'}, file_name=>$set{'to_file'}),
5699                                      -class => "list"},
5700                                      "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
5701                              "<br/>\n";
5702                }
5703        }
5704        close $fd;
5705
5706        # finish last commit (warning: repetition!)
5707        if (%co) {
5708                print "</td>\n" .
5709                      "<td class=\"link\">" .
5710                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})},
5711                              "commit") .
5712                      " | " .
5713                      $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'},
5714                                             hash_base=>$co{'id'})},
5715                              "tree") .
5716                      "</td>\n" .
5717                      "</tr>\n";
5718        }
5719
5720        print "</table>\n";
5721
5722        git_footer_html();
5723}
5724
5725sub git_search_files {
5726        my %co = @_;
5727
5728        local $/ = "\n";
5729        open my $fd, "-|", git_cmd(), 'grep', '-n',
5730                $search_use_regexp ? ('-E', '-i') : '-F',
5731                $searchtext, $co{'tree'}
5732                        or die_error(500, "Open git-grep failed");
5733
5734        git_header_html();
5735
5736        git_print_page_nav('','', $hash,$co{'tree'},$hash);
5737        git_print_header_div('commit', esc_html($co{'title'}), $hash);
5738
5739        print "<table class=\"grep_search\">\n";
5740        my $alternate = 1;
5741        my $matches = 0;
5742        my $lastfile = '';
5743        while (my $line = <$fd>) {
5744                chomp $line;
5745                my ($file, $lno, $ltext, $binary);
5746                last if ($matches++ > 1000);
5747                if ($line =~ /^Binary file (.+) matches$/) {
5748                        $file = $1;
5749                        $binary = 1;
5750                } else {
5751                        (undef, $file, $lno, $ltext) = split(/:/, $line, 4);
5752                }
5753                if ($file ne $lastfile) {
5754                        $lastfile and print "</td></tr>\n";
5755                        if ($alternate++) {
5756                                print "<tr class=\"dark\">\n";
5757                        } else {
5758                                print "<tr class=\"light\">\n";
5759                        }
5760                        print "<td class=\"list\">".
5761                                $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
5762                                                       file_name=>"$file"),
5763                                        -class => "list"}, esc_path($file));
5764                        print "</td><td>\n";
5765                        $lastfile = $file;
5766                }
5767                if ($binary) {
5768                        print "<div class=\"binary\">Binary file</div>\n";
5769                } else {
5770                        $ltext = untabify($ltext);
5771                        if ($ltext =~ m/^(.*)($search_regexp)(.*)$/i) {
5772                                $ltext = esc_html($1, -nbsp=>1);
5773                                $ltext .= '<span class="match">';
5774                                $ltext .= esc_html($2, -nbsp=>1);
5775                                $ltext .= '</span>';
5776                                $ltext .= esc_html($3, -nbsp=>1);
5777                        } else {
5778                                $ltext = esc_html($ltext, -nbsp=>1);
5779                        }
5780                        print "<div class=\"pre\">" .
5781                                $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
5782                                                       file_name=>"$file").'#l'.$lno,
5783                                        -class => "linenr"}, sprintf('%4i', $lno))
5784                                . ' ' .  $ltext . "</div>\n";
5785                }
5786        }
5787        if ($lastfile) {
5788                print "</td></tr>\n";
5789                if ($matches > 1000) {
5790                        print "<div class=\"diff nodifferences\">Too many matches, listing trimmed</div>\n";
5791                }
5792        } else {
5793                print "<div class=\"diff nodifferences\">No matches found</div>\n";
5794        }
5795        close $fd;
5796
5797        print "</table>\n";
5798
5799        git_footer_html();
5800}
5801
5802sub git_search_grep_body {
5803        my ($commitlist, $from, $to, $extra) = @_;
5804        $from = 0 unless defined $from;
5805        $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
5806
5807        print "<table class=\"commit_search\">\n";
5808        my $alternate = 1;
5809        for (my $i = $from; $i <= $to; $i++) {
5810                my %co = %{$commitlist->[$i]};
5811                if (!%co) {
5812                        next;
5813                }
5814                my $commit = $co{'id'};
5815                if ($alternate) {
5816                        print "<tr class=\"dark\">\n";
5817                } else {
5818                        print "<tr class=\"light\">\n";
5819                }
5820                $alternate ^= 1;
5821                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
5822                      format_author_html('td', \%co, 15, 5) .
5823                      "<td>" .
5824                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
5825                               -class => "list subject"},
5826                              chop_and_escape_str($co{'title'}, 50) . "<br/>");
5827                my $comment = $co{'comment'};
5828                foreach my $line (@$comment) {
5829                        if ($line =~ m/^(.*?)($search_regexp)(.*)$/i) {
5830                                my ($lead, $match, $trail) = ($1, $2, $3);
5831                                $match = chop_str($match, 70, 5, 'center');
5832                                my $contextlen = int((80 - length($match))/2);
5833                                $contextlen = 30 if ($contextlen > 30);
5834                                $lead  = chop_str($lead,  $contextlen, 10, 'left');
5835                                $trail = chop_str($trail, $contextlen, 10, 'right');
5836
5837                                $lead  = esc_html($lead);
5838                                $match = esc_html($match);
5839                                $trail = esc_html($trail);
5840
5841                                print "$lead<span class=\"match\">$match</span>$trail<br />";
5842                        }
5843                }
5844                print "</td>\n" .
5845                      "<td class=\"link\">" .
5846                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
5847                      " | " .
5848                      $cgi->a({-href => href(action=>"commitdiff", hash=>$co{'id'})}, "commitdiff") .
5849                      " | " .
5850                      $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
5851                print "</td>\n" .
5852                      "</tr>\n";
5853        }
5854        if (defined $extra) {
5855                print "<tr>\n" .
5856                      "<td colspan=\"3\">$extra</td>\n" .
5857                      "</tr>\n";
5858        }
5859        print "</table>\n";
5860}
5861
5862## ======================================================================
5863## ======================================================================
5864## actions
5865
5866sub git_project_list {
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();
5873        if (!@list) {
5874                die_error(404, "No projects found");
5875        }
5876
5877        git_header_html();
5878        if (defined $home_text && -f $home_text) {
5879                print "<div class=\"index_include\">\n";
5880                insert_file($home_text);
5881                print "</div>\n";
5882        }
5883        print $cgi->startform(-method => "get") .
5884              "<p class=\"projsearch\">Search:\n" .
5885              $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
5886              "</p>" .
5887              $cgi->end_form() . "\n";
5888        git_project_list_body(\@list, $order);
5889        git_footer_html();
5890}
5891
5892sub git_forks {
5893        my $order = $input_params{'order'};
5894        if (defined $order && $order !~ m/none|project|descr|owner|age/) {
5895                die_error(400, "Unknown order parameter");
5896        }
5897
5898        my @list = git_get_projects_list($project);
5899        if (!@list) {
5900                die_error(404, "No forks found");
5901        }
5902
5903        git_header_html();
5904        git_print_page_nav('','');
5905        git_print_header_div('summary', "$project forks");
5906        git_project_list_body(\@list, $order);
5907        git_footer_html();
5908}
5909
5910sub git_project_index {
5911        my @projects = git_get_projects_list();
5912        if (!@projects) {
5913                die_error(404, "No projects found");
5914        }
5915
5916        print $cgi->header(
5917                -type => 'text/plain',
5918                -charset => 'utf-8',
5919                -content_disposition => 'inline; filename="index.aux"');
5920
5921        foreach my $pr (@projects) {
5922                if (!exists $pr->{'owner'}) {
5923                        $pr->{'owner'} = git_get_project_owner("$pr->{'path'}");
5924                }
5925
5926                my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
5927                # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
5928                $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
5929                $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
5930                $path  =~ s/ /\+/g;
5931                $owner =~ s/ /\+/g;
5932
5933                print "$path $owner\n";
5934        }
5935}
5936
5937sub git_summary {
5938        my $descr = git_get_project_description($project) || "none";
5939        my %co = parse_commit("HEAD");
5940        my %cd = %co ? parse_date($co{'committer_epoch'}, $co{'committer_tz'}) : ();
5941        my $head = $co{'id'};
5942        my $remote_heads = gitweb_check_feature('remote_heads');
5943
5944        my $owner = git_get_project_owner($project);
5945
5946        my $refs = git_get_references();
5947        # These get_*_list functions return one more to allow us to see if
5948        # there are more ...
5949        my @taglist  = git_get_tags_list(16);
5950        my @headlist = git_get_heads_list(16);
5951        my %remotedata = $remote_heads ? git_get_remotes_list() : ();
5952        my @forklist;
5953        my $check_forks = gitweb_check_feature('forks');
5954
5955        if ($check_forks) {
5956                # find forks of a project
5957                @forklist = git_get_projects_list($project);
5958                # filter out forks of forks
5959                @forklist = filter_forks_from_projects_list(\@forklist)
5960                        if (@forklist);
5961        }
5962
5963        git_header_html();
5964        git_print_page_nav('summary','', $head);
5965
5966        print "<div class=\"title\">&nbsp;</div>\n";
5967        print "<table class=\"projects_list\">\n" .
5968              "<tr id=\"metadata_desc\"><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
5969              "<tr id=\"metadata_owner\"><td>owner</td><td>" . esc_html($owner) . "</td></tr>\n";
5970        if (defined $cd{'rfc2822'}) {
5971                print "<tr id=\"metadata_lchange\"><td>last change</td>" .
5972                      "<td>".format_timestamp_html(\%cd)."</td></tr>\n";
5973        }
5974
5975        # use per project git URL list in $projectroot/$project/cloneurl
5976        # or make project git URL from git base URL and project name
5977        my $url_tag = "URL";
5978        my @url_list = git_get_project_url_list($project);
5979        @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
5980        foreach my $git_url (@url_list) {
5981                next unless $git_url;
5982                print format_repo_url($url_tag, $git_url);
5983                $url_tag = "";
5984        }
5985
5986        # Tag cloud
5987        my $show_ctags = gitweb_check_feature('ctags');
5988        if ($show_ctags) {
5989                my $ctags = git_get_project_ctags($project);
5990                if (%$ctags) {
5991                        # without ability to add tags, don't show if there are none
5992                        my $cloud = git_populate_project_tagcloud($ctags);
5993                        print "<tr id=\"metadata_ctags\">" .
5994                              "<td>content tags</td>" .
5995                              "<td>".git_show_project_tagcloud($cloud, 48)."</td>" .
5996                              "</tr>\n";
5997                }
5998        }
5999
6000        print "</table>\n";
6001
6002        # If XSS prevention is on, we don't include README.html.
6003        # TODO: Allow a readme in some safe format.
6004        if (!$prevent_xss && -s "$projectroot/$project/README.html") {
6005                print "<div class=\"title\">readme</div>\n" .
6006                      "<div class=\"readme\">\n";
6007                insert_file("$projectroot/$project/README.html");
6008                print "\n</div>\n"; # class="readme"
6009        }
6010
6011        # we need to request one more than 16 (0..15) to check if
6012        # those 16 are all
6013        my @commitlist = $head ? parse_commits($head, 17) : ();
6014        if (@commitlist) {
6015                git_print_header_div('shortlog');
6016                git_shortlog_body(\@commitlist, 0, 15, $refs,
6017                                  $#commitlist <=  15 ? undef :
6018                                  $cgi->a({-href => href(action=>"shortlog")}, "..."));
6019        }
6020
6021        if (@taglist) {
6022                git_print_header_div('tags');
6023                git_tags_body(\@taglist, 0, 15,
6024                              $#taglist <=  15 ? undef :
6025                              $cgi->a({-href => href(action=>"tags")}, "..."));
6026        }
6027
6028        if (@headlist) {
6029                git_print_header_div('heads');
6030                git_heads_body(\@headlist, $head, 0, 15,
6031                               $#headlist <= 15 ? undef :
6032                               $cgi->a({-href => href(action=>"heads")}, "..."));
6033        }
6034
6035        if (%remotedata) {
6036                git_print_header_div('remotes');
6037                git_remotes_body(\%remotedata, 15, $head);
6038        }
6039
6040        if (@forklist) {
6041                git_print_header_div('forks');
6042                git_project_list_body(\@forklist, 'age', 0, 15,
6043                                      $#forklist <= 15 ? undef :
6044                                      $cgi->a({-href => href(action=>"forks")}, "..."),
6045                                      'no_header');
6046        }
6047
6048        git_footer_html();
6049}
6050
6051sub git_tag {
6052        my %tag = parse_tag($hash);
6053
6054        if (! %tag) {
6055                die_error(404, "Unknown tag object");
6056        }
6057
6058        my $head = git_get_head_hash($project);
6059        git_header_html();
6060        git_print_page_nav('','', $head,undef,$head);
6061        git_print_header_div('commit', esc_html($tag{'name'}), $hash);
6062        print "<div class=\"title_text\">\n" .
6063              "<table class=\"object_header\">\n" .
6064              "<tr>\n" .
6065              "<td>object</td>\n" .
6066              "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
6067                               $tag{'object'}) . "</td>\n" .
6068              "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
6069                                              $tag{'type'}) . "</td>\n" .
6070              "</tr>\n";
6071        if (defined($tag{'author'})) {
6072                git_print_authorship_rows(\%tag, 'author');
6073        }
6074        print "</table>\n\n" .
6075              "</div>\n";
6076        print "<div class=\"page_body\">";
6077        my $comment = $tag{'comment'};
6078        foreach my $line (@$comment) {
6079                chomp $line;
6080                print esc_html($line, -nbsp=>1) . "<br/>\n";
6081        }
6082        print "</div>\n";
6083        git_footer_html();
6084}
6085
6086sub git_blame_common {
6087        my $format = shift || 'porcelain';
6088        if ($format eq 'porcelain' && $cgi->param('js')) {
6089                $format = 'incremental';
6090                $action = 'blame_incremental'; # for page title etc
6091        }
6092
6093        # permissions
6094        gitweb_check_feature('blame')
6095                or die_error(403, "Blame view not allowed");
6096
6097        # error checking
6098        die_error(400, "No file name given") unless $file_name;
6099        $hash_base ||= git_get_head_hash($project);
6100        die_error(404, "Couldn't find base commit") unless $hash_base;
6101        my %co = parse_commit($hash_base)
6102                or die_error(404, "Commit not found");
6103        my $ftype = "blob";
6104        if (!defined $hash) {
6105                $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
6106                        or die_error(404, "Error looking up file");
6107        } else {
6108                $ftype = git_get_type($hash);
6109                if ($ftype !~ "blob") {
6110                        die_error(400, "Object is not a blob");
6111                }
6112        }
6113
6114        my $fd;
6115        if ($format eq 'incremental') {
6116                # get file contents (as base)
6117                open $fd, "-|", git_cmd(), 'cat-file', 'blob', $hash
6118                        or die_error(500, "Open git-cat-file failed");
6119        } elsif ($format eq 'data') {
6120                # run git-blame --incremental
6121                open $fd, "-|", git_cmd(), "blame", "--incremental",
6122                        $hash_base, "--", $file_name
6123                        or die_error(500, "Open git-blame --incremental failed");
6124        } else {
6125                # run git-blame --porcelain
6126                open $fd, "-|", git_cmd(), "blame", '-p',
6127                        $hash_base, '--', $file_name
6128                        or die_error(500, "Open git-blame --porcelain failed");
6129        }
6130
6131        # incremental blame data returns early
6132        if ($format eq 'data') {
6133                print $cgi->header(
6134                        -type=>"text/plain", -charset => "utf-8",
6135                        -status=> "200 OK");
6136                local $| = 1; # output autoflush
6137                print while <$fd>;
6138                close $fd
6139                        or print "ERROR $!\n";
6140
6141                print 'END';
6142                if (defined $t0 && gitweb_check_feature('timed')) {
6143                        print ' '.
6144                              tv_interval($t0, [ gettimeofday() ]).
6145                              ' '.$number_of_git_cmds;
6146                }
6147                print "\n";
6148
6149                return;
6150        }
6151
6152        # page header
6153        git_header_html();
6154        my $formats_nav =
6155                $cgi->a({-href => href(action=>"blob", -replay=>1)},
6156                        "blob") .
6157                " | ";
6158        if ($format eq 'incremental') {
6159                $formats_nav .=
6160                        $cgi->a({-href => href(action=>"blame", javascript=>0, -replay=>1)},
6161                                "blame") . " (non-incremental)";
6162        } else {
6163                $formats_nav .=
6164                        $cgi->a({-href => href(action=>"blame_incremental", -replay=>1)},
6165                                "blame") . " (incremental)";
6166        }
6167        $formats_nav .=
6168                " | " .
6169                $cgi->a({-href => href(action=>"history", -replay=>1)},
6170                        "history") .
6171                " | " .
6172                $cgi->a({-href => href(action=>$action, file_name=>$file_name)},
6173                        "HEAD");
6174        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
6175        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
6176        git_print_page_path($file_name, $ftype, $hash_base);
6177
6178        # page body
6179        if ($format eq 'incremental') {
6180                print "<noscript>\n<div class=\"error\"><center><b>\n".
6181                      "This page requires JavaScript to run.\n Use ".
6182                      $cgi->a({-href => href(action=>'blame',javascript=>0,-replay=>1)},
6183                              'this page').
6184                      " instead.\n".
6185                      "</b></center></div>\n</noscript>\n";
6186
6187                print qq!<div id="progress_bar" style="width: 100%; background-color: yellow"></div>\n!;
6188        }
6189
6190        print qq!<div class="page_body">\n!;
6191        print qq!<div id="progress_info">... / ...</div>\n!
6192                if ($format eq 'incremental');
6193        print qq!<table id="blame_table" class="blame" width="100%">\n!.
6194              #qq!<col width="5.5em" /><col width="2.5em" /><col width="*" />\n!.
6195              qq!<thead>\n!.
6196              qq!<tr><th>Commit</th><th>Line</th><th>Data</th></tr>\n!.
6197              qq!</thead>\n!.
6198              qq!<tbody>\n!;
6199
6200        my @rev_color = qw(light dark);
6201        my $num_colors = scalar(@rev_color);
6202        my $current_color = 0;
6203
6204        if ($format eq 'incremental') {
6205                my $color_class = $rev_color[$current_color];
6206
6207                #contents of a file
6208                my $linenr = 0;
6209        LINE:
6210                while (my $line = <$fd>) {
6211                        chomp $line;
6212                        $linenr++;
6213
6214                        print qq!<tr id="l$linenr" class="$color_class">!.
6215                              qq!<td class="sha1"><a href=""> </a></td>!.
6216                              qq!<td class="linenr">!.
6217                              qq!<a class="linenr" href="">$linenr</a></td>!;
6218                        print qq!<td class="pre">! . esc_html($line) . "</td>\n";
6219                        print qq!</tr>\n!;
6220                }
6221
6222        } else { # porcelain, i.e. ordinary blame
6223                my %metainfo = (); # saves information about commits
6224
6225                # blame data
6226        LINE:
6227                while (my $line = <$fd>) {
6228                        chomp $line;
6229                        # the header: <SHA-1> <src lineno> <dst lineno> [<lines in group>]
6230                        # no <lines in group> for subsequent lines in group of lines
6231                        my ($full_rev, $orig_lineno, $lineno, $group_size) =
6232                           ($line =~ /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/);
6233                        if (!exists $metainfo{$full_rev}) {
6234                                $metainfo{$full_rev} = { 'nprevious' => 0 };
6235                        }
6236                        my $meta = $metainfo{$full_rev};
6237                        my $data;
6238                        while ($data = <$fd>) {
6239                                chomp $data;
6240                                last if ($data =~ s/^\t//); # contents of line
6241                                if ($data =~ /^(\S+)(?: (.*))?$/) {
6242                                        $meta->{$1} = $2 unless exists $meta->{$1};
6243                                }
6244                                if ($data =~ /^previous /) {
6245                                        $meta->{'nprevious'}++;
6246                                }
6247                        }
6248                        my $short_rev = substr($full_rev, 0, 8);
6249                        my $author = $meta->{'author'};
6250                        my %date =
6251                                parse_date($meta->{'author-time'}, $meta->{'author-tz'});
6252                        my $date = $date{'iso-tz'};
6253                        if ($group_size) {
6254                                $current_color = ($current_color + 1) % $num_colors;
6255                        }
6256                        my $tr_class = $rev_color[$current_color];
6257                        $tr_class .= ' boundary' if (exists $meta->{'boundary'});
6258                        $tr_class .= ' no-previous' if ($meta->{'nprevious'} == 0);
6259                        $tr_class .= ' multiple-previous' if ($meta->{'nprevious'} > 1);
6260                        print "<tr id=\"l$lineno\" class=\"$tr_class\">\n";
6261                        if ($group_size) {
6262                                print "<td class=\"sha1\"";
6263                                print " title=\"". esc_html($author) . ", $date\"";
6264                                print " rowspan=\"$group_size\"" if ($group_size > 1);
6265                                print ">";
6266                                print $cgi->a({-href => href(action=>"commit",
6267                                                             hash=>$full_rev,
6268                                                             file_name=>$file_name)},
6269                                              esc_html($short_rev));
6270                                if ($group_size >= 2) {
6271                                        my @author_initials = ($author =~ /\b([[:upper:]])\B/g);
6272                                        if (@author_initials) {
6273                                                print "<br />" .
6274                                                      esc_html(join('', @author_initials));
6275                                                #           or join('.', ...)
6276                                        }
6277                                }
6278                                print "</td>\n";
6279                        }
6280                        # 'previous' <sha1 of parent commit> <filename at commit>
6281                        if (exists $meta->{'previous'} &&
6282                            $meta->{'previous'} =~ /^([a-fA-F0-9]{40}) (.*)$/) {
6283                                $meta->{'parent'} = $1;
6284                                $meta->{'file_parent'} = unquote($2);
6285                        }
6286                        my $linenr_commit =
6287                                exists($meta->{'parent'}) ?
6288                                $meta->{'parent'} : $full_rev;
6289                        my $linenr_filename =
6290                                exists($meta->{'file_parent'}) ?
6291                                $meta->{'file_parent'} : unquote($meta->{'filename'});
6292                        my $blamed = href(action => 'blame',
6293                                          file_name => $linenr_filename,
6294                                          hash_base => $linenr_commit);
6295                        print "<td class=\"linenr\">";
6296                        print $cgi->a({ -href => "$blamed#l$orig_lineno",
6297                                        -class => "linenr" },
6298                                      esc_html($lineno));
6299                        print "</td>";
6300                        print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
6301                        print "</tr>\n";
6302                } # end while
6303
6304        }
6305
6306        # footer
6307        print "</tbody>\n".
6308              "</table>\n"; # class="blame"
6309        print "</div>\n";   # class="blame_body"
6310        close $fd
6311                or print "Reading blob failed\n";
6312
6313        git_footer_html();
6314}
6315
6316sub git_blame {
6317        git_blame_common();
6318}
6319
6320sub git_blame_incremental {
6321        git_blame_common('incremental');
6322}
6323
6324sub git_blame_data {
6325        git_blame_common('data');
6326}
6327
6328sub git_tags {
6329        my $head = git_get_head_hash($project);
6330        git_header_html();
6331        git_print_page_nav('','', $head,undef,$head,format_ref_views('tags'));
6332        git_print_header_div('summary', $project);
6333
6334        my @tagslist = git_get_tags_list();
6335        if (@tagslist) {
6336                git_tags_body(\@tagslist);
6337        }
6338        git_footer_html();
6339}
6340
6341sub git_heads {
6342        my $head = git_get_head_hash($project);
6343        git_header_html();
6344        git_print_page_nav('','', $head,undef,$head,format_ref_views('heads'));
6345        git_print_header_div('summary', $project);
6346
6347        my @headslist = git_get_heads_list();
6348        if (@headslist) {
6349                git_heads_body(\@headslist, $head);
6350        }
6351        git_footer_html();
6352}
6353
6354# used both for single remote view and for list of all the remotes
6355sub git_remotes {
6356        gitweb_check_feature('remote_heads')
6357                or die_error(403, "Remote heads view is disabled");
6358
6359        my $head = git_get_head_hash($project);
6360        my $remote = $input_params{'hash'};
6361
6362        my $remotedata = git_get_remotes_list($remote);
6363        die_error(500, "Unable to get remote information") unless defined $remotedata;
6364
6365        unless (%$remotedata) {
6366                die_error(404, defined $remote ?
6367                        "Remote $remote not found" :
6368                        "No remotes found");
6369        }
6370
6371        git_header_html(undef, undef, -action_extra => $remote);
6372        git_print_page_nav('', '',  $head, undef, $head,
6373                format_ref_views($remote ? '' : 'remotes'));
6374
6375        fill_remote_heads($remotedata);
6376        if (defined $remote) {
6377                git_print_header_div('remotes', "$remote remote for $project");
6378                git_remote_block($remote, $remotedata->{$remote}, undef, $head);
6379        } else {
6380                git_print_header_div('summary', "$project remotes");
6381                git_remotes_body($remotedata, undef, $head);
6382        }
6383
6384        git_footer_html();
6385}
6386
6387sub git_blob_plain {
6388        my $type = shift;
6389        my $expires;
6390
6391        if (!defined $hash) {
6392                if (defined $file_name) {
6393                        my $base = $hash_base || git_get_head_hash($project);
6394                        $hash = git_get_hash_by_path($base, $file_name, "blob")
6395                                or die_error(404, "Cannot find file");
6396                } else {
6397                        die_error(400, "No file name defined");
6398                }
6399        } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
6400                # blobs defined by non-textual hash id's can be cached
6401                $expires = "+1d";
6402        }
6403
6404        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
6405                or die_error(500, "Open git-cat-file blob '$hash' failed");
6406
6407        # content-type (can include charset)
6408        $type = blob_contenttype($fd, $file_name, $type);
6409
6410        # "save as" filename, even when no $file_name is given
6411        my $save_as = "$hash";
6412        if (defined $file_name) {
6413                $save_as = $file_name;
6414        } elsif ($type =~ m/^text\//) {
6415                $save_as .= '.txt';
6416        }
6417
6418        # With XSS prevention on, blobs of all types except a few known safe
6419        # ones are served with "Content-Disposition: attachment" to make sure
6420        # they don't run in our security domain.  For certain image types,
6421        # blob view writes an <img> tag referring to blob_plain view, and we
6422        # want to be sure not to break that by serving the image as an
6423        # attachment (though Firefox 3 doesn't seem to care).
6424        my $sandbox = $prevent_xss &&
6425                $type !~ m!^(?:text/[a-z]+|image/(?:gif|png|jpeg))(?:[ ;]|$)!;
6426
6427        # serve text/* as text/plain
6428        if ($prevent_xss &&
6429            ($type =~ m!^text/[a-z]+\b(.*)$! ||
6430             ($type =~ m!^[a-z]+/[a-z]\+xml\b(.*)$! && -T $fd))) {
6431                my $rest = $1;
6432                $rest = defined $rest ? $rest : '';
6433                $type = "text/plain$rest";
6434        }
6435
6436        print $cgi->header(
6437                -type => $type,
6438                -expires => $expires,
6439                -content_disposition =>
6440                        ($sandbox ? 'attachment' : 'inline')
6441                        . '; filename="' . $save_as . '"');
6442        local $/ = undef;
6443        binmode STDOUT, ':raw';
6444        print <$fd>;
6445        binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
6446        close $fd;
6447}
6448
6449sub git_blob {
6450        my $expires;
6451
6452        if (!defined $hash) {
6453                if (defined $file_name) {
6454                        my $base = $hash_base || git_get_head_hash($project);
6455                        $hash = git_get_hash_by_path($base, $file_name, "blob")
6456                                or die_error(404, "Cannot find file");
6457                } else {
6458                        die_error(400, "No file name defined");
6459                }
6460        } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
6461                # blobs defined by non-textual hash id's can be cached
6462                $expires = "+1d";
6463        }
6464
6465        my $have_blame = gitweb_check_feature('blame');
6466        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
6467                or die_error(500, "Couldn't cat $file_name, $hash");
6468        my $mimetype = blob_mimetype($fd, $file_name);
6469        # use 'blob_plain' (aka 'raw') view for files that cannot be displayed
6470        if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)! && -B $fd) {
6471                close $fd;
6472                return git_blob_plain($mimetype);
6473        }
6474        # we can have blame only for text/* mimetype
6475        $have_blame &&= ($mimetype =~ m!^text/!);
6476
6477        my $highlight = gitweb_check_feature('highlight');
6478        my $syntax = guess_file_syntax($highlight, $mimetype, $file_name);
6479        $fd = run_highlighter($fd, $highlight, $syntax)
6480                if $syntax;
6481
6482        git_header_html(undef, $expires);
6483        my $formats_nav = '';
6484        if (defined $hash_base && (my %co = parse_commit($hash_base))) {
6485                if (defined $file_name) {
6486                        if ($have_blame) {
6487                                $formats_nav .=
6488                                        $cgi->a({-href => href(action=>"blame", -replay=>1)},
6489                                                "blame") .
6490                                        " | ";
6491                        }
6492                        $formats_nav .=
6493                                $cgi->a({-href => href(action=>"history", -replay=>1)},
6494                                        "history") .
6495                                " | " .
6496                                $cgi->a({-href => href(action=>"blob_plain", -replay=>1)},
6497                                        "raw") .
6498                                " | " .
6499                                $cgi->a({-href => href(action=>"blob",
6500                                                       hash_base=>"HEAD", file_name=>$file_name)},
6501                                        "HEAD");
6502                } else {
6503                        $formats_nav .=
6504                                $cgi->a({-href => href(action=>"blob_plain", -replay=>1)},
6505                                        "raw");
6506                }
6507                git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
6508                git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
6509        } else {
6510                print "<div class=\"page_nav\">\n" .
6511                      "<br/><br/></div>\n" .
6512                      "<div class=\"title\">".esc_html($hash)."</div>\n";
6513        }
6514        git_print_page_path($file_name, "blob", $hash_base);
6515        print "<div class=\"page_body\">\n";
6516        if ($mimetype =~ m!^image/!) {
6517                print qq!<img type="!.esc_attr($mimetype).qq!"!;
6518                if ($file_name) {
6519                        print qq! alt="!.esc_attr($file_name).qq!" title="!.esc_attr($file_name).qq!"!;
6520                }
6521                print qq! src="! .
6522                      href(action=>"blob_plain", hash=>$hash,
6523                           hash_base=>$hash_base, file_name=>$file_name) .
6524                      qq!" />\n!;
6525        } else {
6526                my $nr;
6527                while (my $line = <$fd>) {
6528                        chomp $line;
6529                        $nr++;
6530                        $line = untabify($line);
6531                        printf qq!<div class="pre"><a id="l%i" href="%s#l%i" class="linenr">%4i</a> %s</div>\n!,
6532                               $nr, esc_attr(href(-replay => 1)), $nr, $nr,
6533                               $syntax ? sanitize($line) : esc_html($line, -nbsp=>1);
6534                }
6535        }
6536        close $fd
6537                or print "Reading blob failed.\n";
6538        print "</div>";
6539        git_footer_html();
6540}
6541
6542sub git_tree {
6543        if (!defined $hash_base) {
6544                $hash_base = "HEAD";
6545        }
6546        if (!defined $hash) {
6547                if (defined $file_name) {
6548                        $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
6549                } else {
6550                        $hash = $hash_base;
6551                }
6552        }
6553        die_error(404, "No such tree") unless defined($hash);
6554
6555        my $show_sizes = gitweb_check_feature('show-sizes');
6556        my $have_blame = gitweb_check_feature('blame');
6557
6558        my @entries = ();
6559        {
6560                local $/ = "\0";
6561                open my $fd, "-|", git_cmd(), "ls-tree", '-z',
6562                        ($show_sizes ? '-l' : ()), @extra_options, $hash
6563                        or die_error(500, "Open git-ls-tree failed");
6564                @entries = map { chomp; $_ } <$fd>;
6565                close $fd
6566                        or die_error(404, "Reading tree failed");
6567        }
6568
6569        my $refs = git_get_references();
6570        my $ref = format_ref_marker($refs, $hash_base);
6571        git_header_html();
6572        my $basedir = '';
6573        if (defined $hash_base && (my %co = parse_commit($hash_base))) {
6574                my @views_nav = ();
6575                if (defined $file_name) {
6576                        push @views_nav,
6577                                $cgi->a({-href => href(action=>"history", -replay=>1)},
6578                                        "history"),
6579                                $cgi->a({-href => href(action=>"tree",
6580                                                       hash_base=>"HEAD", file_name=>$file_name)},
6581                                        "HEAD"),
6582                }
6583                my $snapshot_links = format_snapshot_links($hash);
6584                if (defined $snapshot_links) {
6585                        # FIXME: Should be available when we have no hash base as well.
6586                        push @views_nav, $snapshot_links;
6587                }
6588                git_print_page_nav('tree','', $hash_base, undef, undef,
6589                                   join(' | ', @views_nav));
6590                git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
6591        } else {
6592                undef $hash_base;
6593                print "<div class=\"page_nav\">\n";
6594                print "<br/><br/></div>\n";
6595                print "<div class=\"title\">".esc_html($hash)."</div>\n";
6596        }
6597        if (defined $file_name) {
6598                $basedir = $file_name;
6599                if ($basedir ne '' && substr($basedir, -1) ne '/') {
6600                        $basedir .= '/';
6601                }
6602                git_print_page_path($file_name, 'tree', $hash_base);
6603        }
6604        print "<div class=\"page_body\">\n";
6605        print "<table class=\"tree\">\n";
6606        my $alternate = 1;
6607        # '..' (top directory) link if possible
6608        if (defined $hash_base &&
6609            defined $file_name && $file_name =~ m![^/]+$!) {
6610                if ($alternate) {
6611                        print "<tr class=\"dark\">\n";
6612                } else {
6613                        print "<tr class=\"light\">\n";
6614                }
6615                $alternate ^= 1;
6616
6617                my $up = $file_name;
6618                $up =~ s!/?[^/]+$!!;
6619                undef $up unless $up;
6620                # based on git_print_tree_entry
6621                print '<td class="mode">' . mode_str('040000') . "</td>\n";
6622                print '<td class="size">&nbsp;</td>'."\n" if $show_sizes;
6623                print '<td class="list">';
6624                print $cgi->a({-href => href(action=>"tree",
6625                                             hash_base=>$hash_base,
6626                                             file_name=>$up)},
6627                              "..");
6628                print "</td>\n";
6629                print "<td class=\"link\"></td>\n";
6630
6631                print "</tr>\n";
6632        }
6633        foreach my $line (@entries) {
6634                my %t = parse_ls_tree_line($line, -z => 1, -l => $show_sizes);
6635
6636                if ($alternate) {
6637                        print "<tr class=\"dark\">\n";
6638                } else {
6639                        print "<tr class=\"light\">\n";
6640                }
6641                $alternate ^= 1;
6642
6643                git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
6644
6645                print "</tr>\n";
6646        }
6647        print "</table>\n" .
6648              "</div>";
6649        git_footer_html();
6650}
6651
6652sub snapshot_name {
6653        my ($project, $hash) = @_;
6654
6655        # path/to/project.git  -> project
6656        # path/to/project/.git -> project
6657        my $name = to_utf8($project);
6658        $name =~ s,([^/])/*\.git$,$1,;
6659        $name = basename($name);
6660        # sanitize name
6661        $name =~ s/[[:cntrl:]]/?/g;
6662
6663        my $ver = $hash;
6664        if ($hash =~ /^[0-9a-fA-F]+$/) {
6665                # shorten SHA-1 hash
6666                my $full_hash = git_get_full_hash($project, $hash);
6667                if ($full_hash =~ /^$hash/ && length($hash) > 7) {
6668                        $ver = git_get_short_hash($project, $hash);
6669                }
6670        } elsif ($hash =~ m!^refs/tags/(.*)$!) {
6671                # tags don't need shortened SHA-1 hash
6672                $ver = $1;
6673        } else {
6674                # branches and other need shortened SHA-1 hash
6675                if ($hash =~ m!^refs/(?:heads|remotes)/(.*)$!) {
6676                        $ver = $1;
6677                }
6678                $ver .= '-' . git_get_short_hash($project, $hash);
6679        }
6680        # in case of hierarchical branch names
6681        $ver =~ s!/!.!g;
6682
6683        # name = project-version_string
6684        $name = "$name-$ver";
6685
6686        return wantarray ? ($name, $name) : $name;
6687}
6688
6689sub git_snapshot {
6690        my $format = $input_params{'snapshot_format'};
6691        if (!@snapshot_fmts) {
6692                die_error(403, "Snapshots not allowed");
6693        }
6694        # default to first supported snapshot format
6695        $format ||= $snapshot_fmts[0];
6696        if ($format !~ m/^[a-z0-9]+$/) {
6697                die_error(400, "Invalid snapshot format parameter");
6698        } elsif (!exists($known_snapshot_formats{$format})) {
6699                die_error(400, "Unknown snapshot format");
6700        } elsif ($known_snapshot_formats{$format}{'disabled'}) {
6701                die_error(403, "Snapshot format not allowed");
6702        } elsif (!grep($_ eq $format, @snapshot_fmts)) {
6703                die_error(403, "Unsupported snapshot format");
6704        }
6705
6706        my $type = git_get_type("$hash^{}");
6707        if (!$type) {
6708                die_error(404, 'Object does not exist');
6709        }  elsif ($type eq 'blob') {
6710                die_error(400, 'Object is not a tree-ish');
6711        }
6712
6713        my ($name, $prefix) = snapshot_name($project, $hash);
6714        my $filename = "$name$known_snapshot_formats{$format}{'suffix'}";
6715        my $cmd = quote_command(
6716                git_cmd(), 'archive',
6717                "--format=$known_snapshot_formats{$format}{'format'}",
6718                "--prefix=$prefix/", $hash);
6719        if (exists $known_snapshot_formats{$format}{'compressor'}) {
6720                $cmd .= ' | ' . quote_command(@{$known_snapshot_formats{$format}{'compressor'}});
6721        }
6722
6723        $filename =~ s/(["\\])/\\$1/g;
6724        print $cgi->header(
6725                -type => $known_snapshot_formats{$format}{'type'},
6726                -content_disposition => 'inline; filename="' . $filename . '"',
6727                -status => '200 OK');
6728
6729        open my $fd, "-|", $cmd
6730                or die_error(500, "Execute git-archive failed");
6731        binmode STDOUT, ':raw';
6732        print <$fd>;
6733        binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
6734        close $fd;
6735}
6736
6737sub git_log_generic {
6738        my ($fmt_name, $body_subr, $base, $parent, $file_name, $file_hash) = @_;
6739
6740        my $head = git_get_head_hash($project);
6741        if (!defined $base) {
6742                $base = $head;
6743        }
6744        if (!defined $page) {
6745                $page = 0;
6746        }
6747        my $refs = git_get_references();
6748
6749        my $commit_hash = $base;
6750        if (defined $parent) {
6751                $commit_hash = "$parent..$base";
6752        }
6753        my @commitlist =
6754                parse_commits($commit_hash, 101, (100 * $page),
6755                              defined $file_name ? ($file_name, "--full-history") : ());
6756
6757        my $ftype;
6758        if (!defined $file_hash && defined $file_name) {
6759                # some commits could have deleted file in question,
6760                # and not have it in tree, but one of them has to have it
6761                for (my $i = 0; $i < @commitlist; $i++) {
6762                        $file_hash = git_get_hash_by_path($commitlist[$i]{'id'}, $file_name);
6763                        last if defined $file_hash;
6764                }
6765        }
6766        if (defined $file_hash) {
6767                $ftype = git_get_type($file_hash);
6768        }
6769        if (defined $file_name && !defined $ftype) {
6770                die_error(500, "Unknown type of object");
6771        }
6772        my %co;
6773        if (defined $file_name) {
6774                %co = parse_commit($base)
6775                        or die_error(404, "Unknown commit object");
6776        }
6777
6778
6779        my $paging_nav = format_paging_nav($fmt_name, $page, $#commitlist >= 100);
6780        my $next_link = '';
6781        if ($#commitlist >= 100) {
6782                $next_link =
6783                        $cgi->a({-href => href(-replay=>1, page=>$page+1),
6784                                 -accesskey => "n", -title => "Alt-n"}, "next");
6785        }
6786        my $patch_max = gitweb_get_feature('patches');
6787        if ($patch_max && !defined $file_name) {
6788                if ($patch_max < 0 || @commitlist <= $patch_max) {
6789                        $paging_nav .= " &sdot; " .
6790                                $cgi->a({-href => href(action=>"patches", -replay=>1)},
6791                                        "patches");
6792                }
6793        }
6794
6795        git_header_html();
6796        git_print_page_nav($fmt_name,'', $hash,$hash,$hash, $paging_nav);
6797        if (defined $file_name) {
6798                git_print_header_div('commit', esc_html($co{'title'}), $base);
6799        } else {
6800                git_print_header_div('summary', $project)
6801        }
6802        git_print_page_path($file_name, $ftype, $hash_base)
6803                if (defined $file_name);
6804
6805        $body_subr->(\@commitlist, 0, 99, $refs, $next_link,
6806                     $file_name, $file_hash, $ftype);
6807
6808        git_footer_html();
6809}
6810
6811sub git_log {
6812        git_log_generic('log', \&git_log_body,
6813                        $hash, $hash_parent);
6814}
6815
6816sub git_commit {
6817        $hash ||= $hash_base || "HEAD";
6818        my %co = parse_commit($hash)
6819            or die_error(404, "Unknown commit object");
6820
6821        my $parent  = $co{'parent'};
6822        my $parents = $co{'parents'}; # listref
6823
6824        # we need to prepare $formats_nav before any parameter munging
6825        my $formats_nav;
6826        if (!defined $parent) {
6827                # --root commitdiff
6828                $formats_nav .= '(initial)';
6829        } elsif (@$parents == 1) {
6830                # single parent commit
6831                $formats_nav .=
6832                        '(parent: ' .
6833                        $cgi->a({-href => href(action=>"commit",
6834                                               hash=>$parent)},
6835                                esc_html(substr($parent, 0, 7))) .
6836                        ')';
6837        } else {
6838                # merge commit
6839                $formats_nav .=
6840                        '(merge: ' .
6841                        join(' ', map {
6842                                $cgi->a({-href => href(action=>"commit",
6843                                                       hash=>$_)},
6844                                        esc_html(substr($_, 0, 7)));
6845                        } @$parents ) .
6846                        ')';
6847        }
6848        if (gitweb_check_feature('patches') && @$parents <= 1) {
6849                $formats_nav .= " | " .
6850                        $cgi->a({-href => href(action=>"patch", -replay=>1)},
6851                                "patch");
6852        }
6853
6854        if (!defined $parent) {
6855                $parent = "--root";
6856        }
6857        my @difftree;
6858        open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
6859                @diff_opts,
6860                (@$parents <= 1 ? $parent : '-c'),
6861                $hash, "--"
6862                or die_error(500, "Open git-diff-tree failed");
6863        @difftree = map { chomp; $_ } <$fd>;
6864        close $fd or die_error(404, "Reading git-diff-tree failed");
6865
6866        # non-textual hash id's can be cached
6867        my $expires;
6868        if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
6869                $expires = "+1d";
6870        }
6871        my $refs = git_get_references();
6872        my $ref = format_ref_marker($refs, $co{'id'});
6873
6874        git_header_html(undef, $expires);
6875        git_print_page_nav('commit', '',
6876                           $hash, $co{'tree'}, $hash,
6877                           $formats_nav);
6878
6879        if (defined $co{'parent'}) {
6880                git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
6881        } else {
6882                git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
6883        }
6884        print "<div class=\"title_text\">\n" .
6885              "<table class=\"object_header\">\n";
6886        git_print_authorship_rows(\%co);
6887        print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
6888        print "<tr>" .
6889              "<td>tree</td>" .
6890              "<td class=\"sha1\">" .
6891              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
6892                       class => "list"}, $co{'tree'}) .
6893              "</td>" .
6894              "<td class=\"link\">" .
6895              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
6896                      "tree");
6897        my $snapshot_links = format_snapshot_links($hash);
6898        if (defined $snapshot_links) {
6899                print " | " . $snapshot_links;
6900        }
6901        print "</td>" .
6902              "</tr>\n";
6903
6904        foreach my $par (@$parents) {
6905                print "<tr>" .
6906                      "<td>parent</td>" .
6907                      "<td class=\"sha1\">" .
6908                      $cgi->a({-href => href(action=>"commit", hash=>$par),
6909                               class => "list"}, $par) .
6910                      "</td>" .
6911                      "<td class=\"link\">" .
6912                      $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
6913                      " | " .
6914                      $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
6915                      "</td>" .
6916                      "</tr>\n";
6917        }
6918        print "</table>".
6919              "</div>\n";
6920
6921        print "<div class=\"page_body\">\n";
6922        git_print_log($co{'comment'});
6923        print "</div>\n";
6924
6925        git_difftree_body(\@difftree, $hash, @$parents);
6926
6927        git_footer_html();
6928}
6929
6930sub git_object {
6931        # object is defined by:
6932        # - hash or hash_base alone
6933        # - hash_base and file_name
6934        my $type;
6935
6936        # - hash or hash_base alone
6937        if ($hash || ($hash_base && !defined $file_name)) {
6938                my $object_id = $hash || $hash_base;
6939
6940                open my $fd, "-|", quote_command(
6941                        git_cmd(), 'cat-file', '-t', $object_id) . ' 2> /dev/null'
6942                        or die_error(404, "Object does not exist");
6943                $type = <$fd>;
6944                chomp $type;
6945                close $fd
6946                        or die_error(404, "Object does not exist");
6947
6948        # - hash_base and file_name
6949        } elsif ($hash_base && defined $file_name) {
6950                $file_name =~ s,/+$,,;
6951
6952                system(git_cmd(), "cat-file", '-e', $hash_base) == 0
6953                        or die_error(404, "Base object does not exist");
6954
6955                # here errors should not hapen
6956                open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
6957                        or die_error(500, "Open git-ls-tree failed");
6958                my $line = <$fd>;
6959                close $fd;
6960
6961                #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
6962                unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
6963                        die_error(404, "File or directory for given base does not exist");
6964                }
6965                $type = $2;
6966                $hash = $3;
6967        } else {
6968                die_error(400, "Not enough information to find object");
6969        }
6970
6971        print $cgi->redirect(-uri => href(action=>$type, -full=>1,
6972                                          hash=>$hash, hash_base=>$hash_base,
6973                                          file_name=>$file_name),
6974                             -status => '302 Found');
6975}
6976
6977sub git_blobdiff {
6978        my $format = shift || 'html';
6979
6980        my $fd;
6981        my @difftree;
6982        my %diffinfo;
6983        my $expires;
6984
6985        # preparing $fd and %diffinfo for git_patchset_body
6986        # new style URI
6987        if (defined $hash_base && defined $hash_parent_base) {
6988                if (defined $file_name) {
6989                        # read raw output
6990                        open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
6991                                $hash_parent_base, $hash_base,
6992                                "--", (defined $file_parent ? $file_parent : ()), $file_name
6993                                or die_error(500, "Open git-diff-tree failed");
6994                        @difftree = map { chomp; $_ } <$fd>;
6995                        close $fd
6996                                or die_error(404, "Reading git-diff-tree failed");
6997                        @difftree
6998                                or die_error(404, "Blob diff not found");
6999
7000                } elsif (defined $hash &&
7001                         $hash =~ /[0-9a-fA-F]{40}/) {
7002                        # try to find filename from $hash
7003
7004                        # read filtered raw output
7005                        open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
7006                                $hash_parent_base, $hash_base, "--"
7007                                or die_error(500, "Open git-diff-tree failed");
7008                        @difftree =
7009                                # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
7010                                # $hash == to_id
7011                                grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
7012                                map { chomp; $_ } <$fd>;
7013                        close $fd
7014                                or die_error(404, "Reading git-diff-tree failed");
7015                        @difftree
7016                                or die_error(404, "Blob diff not found");
7017
7018                } else {
7019                        die_error(400, "Missing one of the blob diff parameters");
7020                }
7021
7022                if (@difftree > 1) {
7023                        die_error(400, "Ambiguous blob diff specification");
7024                }
7025
7026                %diffinfo = parse_difftree_raw_line($difftree[0]);
7027                $file_parent ||= $diffinfo{'from_file'} || $file_name;
7028                $file_name   ||= $diffinfo{'to_file'};
7029
7030                $hash_parent ||= $diffinfo{'from_id'};
7031                $hash        ||= $diffinfo{'to_id'};
7032
7033                # non-textual hash id's can be cached
7034                if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
7035                    $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
7036                        $expires = '+1d';
7037                }
7038
7039                # open patch output
7040                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
7041                        '-p', ($format eq 'html' ? "--full-index" : ()),
7042                        $hash_parent_base, $hash_base,
7043                        "--", (defined $file_parent ? $file_parent : ()), $file_name
7044                        or die_error(500, "Open git-diff-tree failed");
7045        }
7046
7047        # old/legacy style URI -- not generated anymore since 1.4.3.
7048        if (!%diffinfo) {
7049                die_error('404 Not Found', "Missing one of the blob diff parameters")
7050        }
7051
7052        # header
7053        if ($format eq 'html') {
7054                my $formats_nav =
7055                        $cgi->a({-href => href(action=>"blobdiff_plain", -replay=>1)},
7056                                "raw");
7057                git_header_html(undef, $expires);
7058                if (defined $hash_base && (my %co = parse_commit($hash_base))) {
7059                        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
7060                        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
7061                } else {
7062                        print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
7063                        print "<div class=\"title\">".esc_html("$hash vs $hash_parent")."</div>\n";
7064                }
7065                if (defined $file_name) {
7066                        git_print_page_path($file_name, "blob", $hash_base);
7067                } else {
7068                        print "<div class=\"page_path\"></div>\n";
7069                }
7070
7071        } elsif ($format eq 'plain') {
7072                print $cgi->header(
7073                        -type => 'text/plain',
7074                        -charset => 'utf-8',
7075                        -expires => $expires,
7076                        -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
7077
7078                print "X-Git-Url: " . $cgi->self_url() . "\n\n";
7079
7080        } else {
7081                die_error(400, "Unknown blobdiff format");
7082        }
7083
7084        # patch
7085        if ($format eq 'html') {
7086                print "<div class=\"page_body\">\n";
7087
7088                git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
7089                close $fd;
7090
7091                print "</div>\n"; # class="page_body"
7092                git_footer_html();
7093
7094        } else {
7095                while (my $line = <$fd>) {
7096                        $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
7097                        $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
7098
7099                        print $line;
7100
7101                        last if $line =~ m!^\+\+\+!;
7102                }
7103                local $/ = undef;
7104                print <$fd>;
7105                close $fd;
7106        }
7107}
7108
7109sub git_blobdiff_plain {
7110        git_blobdiff('plain');
7111}
7112
7113sub git_commitdiff {
7114        my %params = @_;
7115        my $format = $params{-format} || 'html';
7116
7117        my ($patch_max) = gitweb_get_feature('patches');
7118        if ($format eq 'patch') {
7119                die_error(403, "Patch view not allowed") unless $patch_max;
7120        }
7121
7122        $hash ||= $hash_base || "HEAD";
7123        my %co = parse_commit($hash)
7124            or die_error(404, "Unknown commit object");
7125
7126        # choose format for commitdiff for merge
7127        if (! defined $hash_parent && @{$co{'parents'}} > 1) {
7128                $hash_parent = '--cc';
7129        }
7130        # we need to prepare $formats_nav before almost any parameter munging
7131        my $formats_nav;
7132        if ($format eq 'html') {
7133                $formats_nav =
7134                        $cgi->a({-href => href(action=>"commitdiff_plain", -replay=>1)},
7135                                "raw");
7136                if ($patch_max && @{$co{'parents'}} <= 1) {
7137                        $formats_nav .= " | " .
7138                                $cgi->a({-href => href(action=>"patch", -replay=>1)},
7139                                        "patch");
7140                }
7141
7142                if (defined $hash_parent &&
7143                    $hash_parent ne '-c' && $hash_parent ne '--cc') {
7144                        # commitdiff with two commits given
7145                        my $hash_parent_short = $hash_parent;
7146                        if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
7147                                $hash_parent_short = substr($hash_parent, 0, 7);
7148                        }
7149                        $formats_nav .=
7150                                ' (from';
7151                        for (my $i = 0; $i < @{$co{'parents'}}; $i++) {
7152                                if ($co{'parents'}[$i] eq $hash_parent) {
7153                                        $formats_nav .= ' parent ' . ($i+1);
7154                                        last;
7155                                }
7156                        }
7157                        $formats_nav .= ': ' .
7158                                $cgi->a({-href => href(action=>"commitdiff",
7159                                                       hash=>$hash_parent)},
7160                                        esc_html($hash_parent_short)) .
7161                                ')';
7162                } elsif (!$co{'parent'}) {
7163                        # --root commitdiff
7164                        $formats_nav .= ' (initial)';
7165                } elsif (scalar @{$co{'parents'}} == 1) {
7166                        # single parent commit
7167                        $formats_nav .=
7168                                ' (parent: ' .
7169                                $cgi->a({-href => href(action=>"commitdiff",
7170                                                       hash=>$co{'parent'})},
7171                                        esc_html(substr($co{'parent'}, 0, 7))) .
7172                                ')';
7173                } else {
7174                        # merge commit
7175                        if ($hash_parent eq '--cc') {
7176                                $formats_nav .= ' | ' .
7177                                        $cgi->a({-href => href(action=>"commitdiff",
7178                                                               hash=>$hash, hash_parent=>'-c')},
7179                                                'combined');
7180                        } else { # $hash_parent eq '-c'
7181                                $formats_nav .= ' | ' .
7182                                        $cgi->a({-href => href(action=>"commitdiff",
7183                                                               hash=>$hash, hash_parent=>'--cc')},
7184                                                'compact');
7185                        }
7186                        $formats_nav .=
7187                                ' (merge: ' .
7188                                join(' ', map {
7189                                        $cgi->a({-href => href(action=>"commitdiff",
7190                                                               hash=>$_)},
7191                                                esc_html(substr($_, 0, 7)));
7192                                } @{$co{'parents'}} ) .
7193                                ')';
7194                }
7195        }
7196
7197        my $hash_parent_param = $hash_parent;
7198        if (!defined $hash_parent_param) {
7199                # --cc for multiple parents, --root for parentless
7200                $hash_parent_param =
7201                        @{$co{'parents'}} > 1 ? '--cc' : $co{'parent'} || '--root';
7202        }
7203
7204        # read commitdiff
7205        my $fd;
7206        my @difftree;
7207        if ($format eq 'html') {
7208                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
7209                        "--no-commit-id", "--patch-with-raw", "--full-index",
7210                        $hash_parent_param, $hash, "--"
7211                        or die_error(500, "Open git-diff-tree failed");
7212
7213                while (my $line = <$fd>) {
7214                        chomp $line;
7215                        # empty line ends raw part of diff-tree output
7216                        last unless $line;
7217                        push @difftree, scalar parse_difftree_raw_line($line);
7218                }
7219
7220        } elsif ($format eq 'plain') {
7221                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
7222                        '-p', $hash_parent_param, $hash, "--"
7223                        or die_error(500, "Open git-diff-tree failed");
7224        } elsif ($format eq 'patch') {
7225                # For commit ranges, we limit the output to the number of
7226                # patches specified in the 'patches' feature.
7227                # For single commits, we limit the output to a single patch,
7228                # diverging from the git-format-patch default.
7229                my @commit_spec = ();
7230                if ($hash_parent) {
7231                        if ($patch_max > 0) {
7232                                push @commit_spec, "-$patch_max";
7233                        }
7234                        push @commit_spec, '-n', "$hash_parent..$hash";
7235                } else {
7236                        if ($params{-single}) {
7237                                push @commit_spec, '-1';
7238                        } else {
7239                                if ($patch_max > 0) {
7240                                        push @commit_spec, "-$patch_max";
7241                                }
7242                                push @commit_spec, "-n";
7243                        }
7244                        push @commit_spec, '--root', $hash;
7245                }
7246                open $fd, "-|", git_cmd(), "format-patch", @diff_opts,
7247                        '--encoding=utf8', '--stdout', @commit_spec
7248                        or die_error(500, "Open git-format-patch failed");
7249        } else {
7250                die_error(400, "Unknown commitdiff format");
7251        }
7252
7253        # non-textual hash id's can be cached
7254        my $expires;
7255        if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
7256                $expires = "+1d";
7257        }
7258
7259        # write commit message
7260        if ($format eq 'html') {
7261                my $refs = git_get_references();
7262                my $ref = format_ref_marker($refs, $co{'id'});
7263
7264                git_header_html(undef, $expires);
7265                git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
7266                git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
7267                print "<div class=\"title_text\">\n" .
7268                      "<table class=\"object_header\">\n";
7269                git_print_authorship_rows(\%co);
7270                print "</table>".
7271                      "</div>\n";
7272                print "<div class=\"page_body\">\n";
7273                if (@{$co{'comment'}} > 1) {
7274                        print "<div class=\"log\">\n";
7275                        git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
7276                        print "</div>\n"; # class="log"
7277                }
7278
7279        } elsif ($format eq 'plain') {
7280                my $refs = git_get_references("tags");
7281                my $tagname = git_get_rev_name_tags($hash);
7282                my $filename = basename($project) . "-$hash.patch";
7283
7284                print $cgi->header(
7285                        -type => 'text/plain',
7286                        -charset => 'utf-8',
7287                        -expires => $expires,
7288                        -content_disposition => 'inline; filename="' . "$filename" . '"');
7289                my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
7290                print "From: " . to_utf8($co{'author'}) . "\n";
7291                print "Date: $ad{'rfc2822'} ($ad{'tz_local'})\n";
7292                print "Subject: " . to_utf8($co{'title'}) . "\n";
7293
7294                print "X-Git-Tag: $tagname\n" if $tagname;
7295                print "X-Git-Url: " . $cgi->self_url() . "\n\n";
7296
7297                foreach my $line (@{$co{'comment'}}) {
7298                        print to_utf8($line) . "\n";
7299                }
7300                print "---\n\n";
7301        } elsif ($format eq 'patch') {
7302                my $filename = basename($project) . "-$hash.patch";
7303
7304                print $cgi->header(
7305                        -type => 'text/plain',
7306                        -charset => 'utf-8',
7307                        -expires => $expires,
7308                        -content_disposition => 'inline; filename="' . "$filename" . '"');
7309        }
7310
7311        # write patch
7312        if ($format eq 'html') {
7313                my $use_parents = !defined $hash_parent ||
7314                        $hash_parent eq '-c' || $hash_parent eq '--cc';
7315                git_difftree_body(\@difftree, $hash,
7316                                  $use_parents ? @{$co{'parents'}} : $hash_parent);
7317                print "<br/>\n";
7318
7319                git_patchset_body($fd, \@difftree, $hash,
7320                                  $use_parents ? @{$co{'parents'}} : $hash_parent);
7321                close $fd;
7322                print "</div>\n"; # class="page_body"
7323                git_footer_html();
7324
7325        } elsif ($format eq 'plain') {
7326                local $/ = undef;
7327                print <$fd>;
7328                close $fd
7329                        or print "Reading git-diff-tree failed\n";
7330        } elsif ($format eq 'patch') {
7331                local $/ = undef;
7332                print <$fd>;
7333                close $fd
7334                        or print "Reading git-format-patch failed\n";
7335        }
7336}
7337
7338sub git_commitdiff_plain {
7339        git_commitdiff(-format => 'plain');
7340}
7341
7342# format-patch-style patches
7343sub git_patch {
7344        git_commitdiff(-format => 'patch', -single => 1);
7345}
7346
7347sub git_patches {
7348        git_commitdiff(-format => 'patch');
7349}
7350
7351sub git_history {
7352        git_log_generic('history', \&git_history_body,
7353                        $hash_base, $hash_parent_base,
7354                        $file_name, $hash);
7355}
7356
7357sub git_search {
7358        $searchtype ||= 'commit';
7359
7360        # check if appropriate features are enabled
7361        gitweb_check_feature('search')
7362                or die_error(403, "Search is disabled");
7363        if ($searchtype eq 'pickaxe') {
7364                # pickaxe may take all resources of your box and run for several minutes
7365                # with every query - so decide by yourself how public you make this feature
7366                gitweb_check_feature('pickaxe')
7367                        or die_error(403, "Pickaxe search is disabled");
7368        }
7369        if ($searchtype eq 'grep') {
7370                # grep search might be potentially CPU-intensive, too
7371                gitweb_check_feature('grep')
7372                        or die_error(403, "Grep search is disabled");
7373        }
7374
7375        if (!defined $searchtext) {
7376                die_error(400, "Text field is empty");
7377        }
7378        if (!defined $hash) {
7379                $hash = git_get_head_hash($project);
7380        }
7381        my %co = parse_commit($hash);
7382        if (!%co) {
7383                die_error(404, "Unknown commit object");
7384        }
7385        if (!defined $page) {
7386                $page = 0;
7387        }
7388
7389        if ($searchtype eq 'commit' ||
7390            $searchtype eq 'author' ||
7391            $searchtype eq 'committer') {
7392                git_search_message(%co);
7393        } elsif ($searchtype eq 'pickaxe') {
7394                git_search_changes(%co);
7395        } elsif ($searchtype eq 'grep') {
7396                git_search_files(%co);
7397        } else {
7398                die_error(400, "Unknown search type");
7399        }
7400}
7401
7402sub git_search_help {
7403        git_header_html();
7404        git_print_page_nav('','', $hash,$hash,$hash);
7405        print <<EOT;
7406<p><strong>Pattern</strong> is by default a normal string that is matched precisely (but without
7407regard to case, except in the case of pickaxe). However, when you check the <em>re</em> checkbox,
7408the pattern entered is recognized as the POSIX extended
7409<a href="http://en.wikipedia.org/wiki/Regular_expression">regular expression</a> (also case
7410insensitive).</p>
7411<dl>
7412<dt><b>commit</b></dt>
7413<dd>The commit messages and authorship information will be scanned for the given pattern.</dd>
7414EOT
7415        my $have_grep = gitweb_check_feature('grep');
7416        if ($have_grep) {
7417                print <<EOT;
7418<dt><b>grep</b></dt>
7419<dd>All files in the currently selected tree (HEAD unless you are explicitly browsing
7420    a different one) are searched for the given pattern. On large trees, this search can take
7421a while and put some strain on the server, so please use it with some consideration. Note that
7422due to git-grep peculiarity, currently if regexp mode is turned off, the matches are
7423case-sensitive.</dd>
7424EOT
7425        }
7426        print <<EOT;
7427<dt><b>author</b></dt>
7428<dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given pattern.</dd>
7429<dt><b>committer</b></dt>
7430<dd>Name and e-mail of the committer and date of commit will be scanned for the given pattern.</dd>
7431EOT
7432        my $have_pickaxe = gitweb_check_feature('pickaxe');
7433        if ($have_pickaxe) {
7434                print <<EOT;
7435<dt><b>pickaxe</b></dt>
7436<dd>All commits that caused the string to appear or disappear from any file (changes that
7437added, removed or "modified" the string) will be listed. This search can take a while and
7438takes a lot of strain on the server, so please use it wisely. Note that since you may be
7439interested even in changes just changing the case as well, this search is case sensitive.</dd>
7440EOT
7441        }
7442        print "</dl>\n";
7443        git_footer_html();
7444}
7445
7446sub git_shortlog {
7447        git_log_generic('shortlog', \&git_shortlog_body,
7448                        $hash, $hash_parent);
7449}
7450
7451## ......................................................................
7452## feeds (RSS, Atom; OPML)
7453
7454sub git_feed {
7455        my $format = shift || 'atom';
7456        my $have_blame = gitweb_check_feature('blame');
7457
7458        # Atom: http://www.atomenabled.org/developers/syndication/
7459        # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
7460        if ($format ne 'rss' && $format ne 'atom') {
7461                die_error(400, "Unknown web feed format");
7462        }
7463
7464        # log/feed of current (HEAD) branch, log of given branch, history of file/directory
7465        my $head = $hash || 'HEAD';
7466        my @commitlist = parse_commits($head, 150, 0, $file_name);
7467
7468        my %latest_commit;
7469        my %latest_date;
7470        my $content_type = "application/$format+xml";
7471        if (defined $cgi->http('HTTP_ACCEPT') &&
7472                 $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
7473                # browser (feed reader) prefers text/xml
7474                $content_type = 'text/xml';
7475        }
7476        if (defined($commitlist[0])) {
7477                %latest_commit = %{$commitlist[0]};
7478                my $latest_epoch = $latest_commit{'committer_epoch'};
7479                %latest_date   = parse_date($latest_epoch, $latest_commit{'comitter_tz'});
7480                my $if_modified = $cgi->http('IF_MODIFIED_SINCE');
7481                if (defined $if_modified) {
7482                        my $since;
7483                        if (eval { require HTTP::Date; 1; }) {
7484                                $since = HTTP::Date::str2time($if_modified);
7485                        } elsif (eval { require Time::ParseDate; 1; }) {
7486                                $since = Time::ParseDate::parsedate($if_modified, GMT => 1);
7487                        }
7488                        if (defined $since && $latest_epoch <= $since) {
7489                                print $cgi->header(
7490                                        -type => $content_type,
7491                                        -charset => 'utf-8',
7492                                        -last_modified => $latest_date{'rfc2822'},
7493                                        -status => '304 Not Modified');
7494                                return;
7495                        }
7496                }
7497                print $cgi->header(
7498                        -type => $content_type,
7499                        -charset => 'utf-8',
7500                        -last_modified => $latest_date{'rfc2822'});
7501        } else {
7502                print $cgi->header(
7503                        -type => $content_type,
7504                        -charset => 'utf-8');
7505        }
7506
7507        # Optimization: skip generating the body if client asks only
7508        # for Last-Modified date.
7509        return if ($cgi->request_method() eq 'HEAD');
7510
7511        # header variables
7512        my $title = "$site_name - $project/$action";
7513        my $feed_type = 'log';
7514        if (defined $hash) {
7515                $title .= " - '$hash'";
7516                $feed_type = 'branch log';
7517                if (defined $file_name) {
7518                        $title .= " :: $file_name";
7519                        $feed_type = 'history';
7520                }
7521        } elsif (defined $file_name) {
7522                $title .= " - $file_name";
7523                $feed_type = 'history';
7524        }
7525        $title .= " $feed_type";
7526        my $descr = git_get_project_description($project);
7527        if (defined $descr) {
7528                $descr = esc_html($descr);
7529        } else {
7530                $descr = "$project " .
7531                         ($format eq 'rss' ? 'RSS' : 'Atom') .
7532                         " feed";
7533        }
7534        my $owner = git_get_project_owner($project);
7535        $owner = esc_html($owner);
7536
7537        #header
7538        my $alt_url;
7539        if (defined $file_name) {
7540                $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
7541        } elsif (defined $hash) {
7542                $alt_url = href(-full=>1, action=>"log", hash=>$hash);
7543        } else {
7544                $alt_url = href(-full=>1, action=>"summary");
7545        }
7546        print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
7547        if ($format eq 'rss') {
7548                print <<XML;
7549<rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
7550<channel>
7551XML
7552                print "<title>$title</title>\n" .
7553                      "<link>$alt_url</link>\n" .
7554                      "<description>$descr</description>\n" .
7555                      "<language>en</language>\n" .
7556                      # project owner is responsible for 'editorial' content
7557                      "<managingEditor>$owner</managingEditor>\n";
7558                if (defined $logo || defined $favicon) {
7559                        # prefer the logo to the favicon, since RSS
7560                        # doesn't allow both
7561                        my $img = esc_url($logo || $favicon);
7562                        print "<image>\n" .
7563                              "<url>$img</url>\n" .
7564                              "<title>$title</title>\n" .
7565                              "<link>$alt_url</link>\n" .
7566                              "</image>\n";
7567                }
7568                if (%latest_date) {
7569                        print "<pubDate>$latest_date{'rfc2822'}</pubDate>\n";
7570                        print "<lastBuildDate>$latest_date{'rfc2822'}</lastBuildDate>\n";
7571                }
7572                print "<generator>gitweb v.$version/$git_version</generator>\n";
7573        } elsif ($format eq 'atom') {
7574                print <<XML;
7575<feed xmlns="http://www.w3.org/2005/Atom">
7576XML
7577                print "<title>$title</title>\n" .
7578                      "<subtitle>$descr</subtitle>\n" .
7579                      '<link rel="alternate" type="text/html" href="' .
7580                      $alt_url . '" />' . "\n" .
7581                      '<link rel="self" type="' . $content_type . '" href="' .
7582                      $cgi->self_url() . '" />' . "\n" .
7583                      "<id>" . href(-full=>1) . "</id>\n" .
7584                      # use project owner for feed author
7585                      "<author><name>$owner</name></author>\n";
7586                if (defined $favicon) {
7587                        print "<icon>" . esc_url($favicon) . "</icon>\n";
7588                }
7589                if (defined $logo) {
7590                        # not twice as wide as tall: 72 x 27 pixels
7591                        print "<logo>" . esc_url($logo) . "</logo>\n";
7592                }
7593                if (! %latest_date) {
7594                        # dummy date to keep the feed valid until commits trickle in:
7595                        print "<updated>1970-01-01T00:00:00Z</updated>\n";
7596                } else {
7597                        print "<updated>$latest_date{'iso-8601'}</updated>\n";
7598                }
7599                print "<generator version='$version/$git_version'>gitweb</generator>\n";
7600        }
7601
7602        # contents
7603        for (my $i = 0; $i <= $#commitlist; $i++) {
7604                my %co = %{$commitlist[$i]};
7605                my $commit = $co{'id'};
7606                # we read 150, we always show 30 and the ones more recent than 48 hours
7607                if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
7608                        last;
7609                }
7610                my %cd = parse_date($co{'author_epoch'}, $co{'author_tz'});
7611
7612                # get list of changed files
7613                open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
7614                        $co{'parent'} || "--root",
7615                        $co{'id'}, "--", (defined $file_name ? $file_name : ())
7616                        or next;
7617                my @difftree = map { chomp; $_ } <$fd>;
7618                close $fd
7619                        or next;
7620
7621                # print element (entry, item)
7622                my $co_url = href(-full=>1, action=>"commitdiff", hash=>$commit);
7623                if ($format eq 'rss') {
7624                        print "<item>\n" .
7625                              "<title>" . esc_html($co{'title'}) . "</title>\n" .
7626                              "<author>" . esc_html($co{'author'}) . "</author>\n" .
7627                              "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
7628                              "<guid isPermaLink=\"true\">$co_url</guid>\n" .
7629                              "<link>$co_url</link>\n" .
7630                              "<description>" . esc_html($co{'title'}) . "</description>\n" .
7631                              "<content:encoded>" .
7632                              "<![CDATA[\n";
7633                } elsif ($format eq 'atom') {
7634                        print "<entry>\n" .
7635                              "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
7636                              "<updated>$cd{'iso-8601'}</updated>\n" .
7637                              "<author>\n" .
7638                              "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
7639                        if ($co{'author_email'}) {
7640                                print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
7641                        }
7642                        print "</author>\n" .
7643                              # use committer for contributor
7644                              "<contributor>\n" .
7645                              "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
7646                        if ($co{'committer_email'}) {
7647                                print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
7648                        }
7649                        print "</contributor>\n" .
7650                              "<published>$cd{'iso-8601'}</published>\n" .
7651                              "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
7652                              "<id>$co_url</id>\n" .
7653                              "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
7654                              "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
7655                }
7656                my $comment = $co{'comment'};
7657                print "<pre>\n";
7658                foreach my $line (@$comment) {
7659                        $line = esc_html($line);
7660                        print "$line\n";
7661                }
7662                print "</pre><ul>\n";
7663                foreach my $difftree_line (@difftree) {
7664                        my %difftree = parse_difftree_raw_line($difftree_line);
7665                        next if !$difftree{'from_id'};
7666
7667                        my $file = $difftree{'file'} || $difftree{'to_file'};
7668
7669                        print "<li>" .
7670                              "[" .
7671                              $cgi->a({-href => href(-full=>1, action=>"blobdiff",
7672                                                     hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
7673                                                     hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
7674                                                     file_name=>$file, file_parent=>$difftree{'from_file'}),
7675                                      -title => "diff"}, 'D');
7676                        if ($have_blame) {
7677                                print $cgi->a({-href => href(-full=>1, action=>"blame",
7678                                                             file_name=>$file, hash_base=>$commit),
7679                                              -title => "blame"}, 'B');
7680                        }
7681                        # if this is not a feed of a file history
7682                        if (!defined $file_name || $file_name ne $file) {
7683                                print $cgi->a({-href => href(-full=>1, action=>"history",
7684                                                             file_name=>$file, hash=>$commit),
7685                                              -title => "history"}, 'H');
7686                        }
7687                        $file = esc_path($file);
7688                        print "] ".
7689                              "$file</li>\n";
7690                }
7691                if ($format eq 'rss') {
7692                        print "</ul>]]>\n" .
7693                              "</content:encoded>\n" .
7694                              "</item>\n";
7695                } elsif ($format eq 'atom') {
7696                        print "</ul>\n</div>\n" .
7697                              "</content>\n" .
7698                              "</entry>\n";
7699                }
7700        }
7701
7702        # end of feed
7703        if ($format eq 'rss') {
7704                print "</channel>\n</rss>\n";
7705        } elsif ($format eq 'atom') {
7706                print "</feed>\n";
7707        }
7708}
7709
7710sub git_rss {
7711        git_feed('rss');
7712}
7713
7714sub git_atom {
7715        git_feed('atom');
7716}
7717
7718sub git_opml {
7719        my @list = git_get_projects_list();
7720        if (!@list) {
7721                die_error(404, "No projects found");
7722        }
7723
7724        print $cgi->header(
7725                -type => 'text/xml',
7726                -charset => 'utf-8',
7727                -content_disposition => 'inline; filename="opml.xml"');
7728
7729        print <<XML;
7730<?xml version="1.0" encoding="utf-8"?>
7731<opml version="1.0">
7732<head>
7733  <title>$site_name OPML Export</title>
7734</head>
7735<body>
7736<outline text="git RSS feeds">
7737XML
7738
7739        foreach my $pr (@list) {
7740                my %proj = %$pr;
7741                my $head = git_get_head_hash($proj{'path'});
7742                if (!defined $head) {
7743                        next;
7744                }
7745                $git_dir = "$projectroot/$proj{'path'}";
7746                my %co = parse_commit($head);
7747                if (!%co) {
7748                        next;
7749                }
7750
7751                my $path = esc_html(chop_str($proj{'path'}, 25, 5));
7752                my $rss  = href('project' => $proj{'path'}, 'action' => 'rss', -full => 1);
7753                my $html = href('project' => $proj{'path'}, 'action' => 'summary', -full => 1);
7754                print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
7755        }
7756        print <<XML;
7757</outline>
7758</body>
7759</opml>
7760XML
7761}