gitweb / gitweb.perlon commit Merge branch 'jc/maint-verify-objects-remove-pessimism' into maint-1.7.8 (b1bcfbe)
   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                        $action or die_error(404, "Object does not exist");
1126                } elsif (defined $hash_base && defined $file_name) {
1127                        $action = git_get_type("$hash_base:$file_name");
1128                        $action or die_error(404, "File or directory does not exist");
1129                } elsif (defined $project) {
1130                        $action = 'summary';
1131                } else {
1132                        $action = 'project_list';
1133                }
1134        }
1135        if (!defined($actions{$action})) {
1136                die_error(400, "Unknown action");
1137        }
1138        if ($action !~ m/^(?:opml|project_list|project_index)$/ &&
1139            !$project) {
1140                die_error(400, "Project needed");
1141        }
1142        $actions{$action}->();
1143}
1144
1145sub reset_timer {
1146        our $t0 = [ gettimeofday() ]
1147                if defined $t0;
1148        our $number_of_git_cmds = 0;
1149}
1150
1151our $first_request = 1;
1152sub run_request {
1153        reset_timer();
1154
1155        evaluate_uri();
1156        if ($first_request) {
1157                evaluate_gitweb_config();
1158                evaluate_git_version();
1159        }
1160        if ($per_request_config) {
1161                if (ref($per_request_config) eq 'CODE') {
1162                        $per_request_config->();
1163                } elsif (!$first_request) {
1164                        evaluate_gitweb_config();
1165                }
1166        }
1167        check_loadavg();
1168
1169        # $projectroot and $projects_list might be set in gitweb config file
1170        $projects_list ||= $projectroot;
1171
1172        evaluate_query_params();
1173        evaluate_path_info();
1174        evaluate_and_validate_params();
1175        evaluate_git_dir();
1176
1177        configure_gitweb_features();
1178
1179        dispatch();
1180}
1181
1182our $is_last_request = sub { 1 };
1183our ($pre_dispatch_hook, $post_dispatch_hook, $pre_listen_hook);
1184our $CGI = 'CGI';
1185our $cgi;
1186sub configure_as_fcgi {
1187        require CGI::Fast;
1188        our $CGI = 'CGI::Fast';
1189
1190        my $request_number = 0;
1191        # let each child service 100 requests
1192        our $is_last_request = sub { ++$request_number > 100 };
1193}
1194sub evaluate_argv {
1195        my $script_name = $ENV{'SCRIPT_NAME'} || $ENV{'SCRIPT_FILENAME'} || __FILE__;
1196        configure_as_fcgi()
1197                if $script_name =~ /\.fcgi$/;
1198
1199        return unless (@ARGV);
1200
1201        require Getopt::Long;
1202        Getopt::Long::GetOptions(
1203                'fastcgi|fcgi|f' => \&configure_as_fcgi,
1204                'nproc|n=i' => sub {
1205                        my ($arg, $val) = @_;
1206                        return unless eval { require FCGI::ProcManager; 1; };
1207                        my $proc_manager = FCGI::ProcManager->new({
1208                                n_processes => $val,
1209                        });
1210                        our $pre_listen_hook    = sub { $proc_manager->pm_manage()        };
1211                        our $pre_dispatch_hook  = sub { $proc_manager->pm_pre_dispatch()  };
1212                        our $post_dispatch_hook = sub { $proc_manager->pm_post_dispatch() };
1213                },
1214        );
1215}
1216
1217sub run {
1218        evaluate_argv();
1219
1220        $first_request = 1;
1221        $pre_listen_hook->()
1222                if $pre_listen_hook;
1223
1224 REQUEST:
1225        while ($cgi = $CGI->new()) {
1226                $pre_dispatch_hook->()
1227                        if $pre_dispatch_hook;
1228
1229                run_request();
1230
1231                $post_dispatch_hook->()
1232                        if $post_dispatch_hook;
1233                $first_request = 0;
1234
1235                last REQUEST if ($is_last_request->());
1236        }
1237
1238 DONE_GITWEB:
1239        1;
1240}
1241
1242run();
1243
1244if (defined caller) {
1245        # wrapped in a subroutine processing requests,
1246        # e.g. mod_perl with ModPerl::Registry, or PSGI with Plack::App::WrapCGI
1247        return;
1248} else {
1249        # pure CGI script, serving single request
1250        exit;
1251}
1252
1253## ======================================================================
1254## action links
1255
1256# possible values of extra options
1257# -full => 0|1      - use absolute/full URL ($my_uri/$my_url as base)
1258# -replay => 1      - start from a current view (replay with modifications)
1259# -path_info => 0|1 - don't use/use path_info URL (if possible)
1260# -anchor => ANCHOR - add #ANCHOR to end of URL, implies -replay if used alone
1261sub href {
1262        my %params = @_;
1263        # default is to use -absolute url() i.e. $my_uri
1264        my $href = $params{-full} ? $my_url : $my_uri;
1265
1266        # implicit -replay, must be first of implicit params
1267        $params{-replay} = 1 if (keys %params == 1 && $params{-anchor});
1268
1269        $params{'project'} = $project unless exists $params{'project'};
1270
1271        if ($params{-replay}) {
1272                while (my ($name, $symbol) = each %cgi_param_mapping) {
1273                        if (!exists $params{$name}) {
1274                                $params{$name} = $input_params{$name};
1275                        }
1276                }
1277        }
1278
1279        my $use_pathinfo = gitweb_check_feature('pathinfo');
1280        if (defined $params{'project'} &&
1281            (exists $params{-path_info} ? $params{-path_info} : $use_pathinfo)) {
1282                # try to put as many parameters as possible in PATH_INFO:
1283                #   - project name
1284                #   - action
1285                #   - hash_parent or hash_parent_base:/file_parent
1286                #   - hash or hash_base:/filename
1287                #   - the snapshot_format as an appropriate suffix
1288
1289                # When the script is the root DirectoryIndex for the domain,
1290                # $href here would be something like http://gitweb.example.com/
1291                # Thus, we strip any trailing / from $href, to spare us double
1292                # slashes in the final URL
1293                $href =~ s,/$,,;
1294
1295                # Then add the project name, if present
1296                $href .= "/".esc_path_info($params{'project'});
1297                delete $params{'project'};
1298
1299                # since we destructively absorb parameters, we keep this
1300                # boolean that remembers if we're handling a snapshot
1301                my $is_snapshot = $params{'action'} eq 'snapshot';
1302
1303                # Summary just uses the project path URL, any other action is
1304                # added to the URL
1305                if (defined $params{'action'}) {
1306                        $href .= "/".esc_path_info($params{'action'})
1307                                unless $params{'action'} eq 'summary';
1308                        delete $params{'action'};
1309                }
1310
1311                # Next, we put hash_parent_base:/file_parent..hash_base:/file_name,
1312                # stripping nonexistent or useless pieces
1313                $href .= "/" if ($params{'hash_base'} || $params{'hash_parent_base'}
1314                        || $params{'hash_parent'} || $params{'hash'});
1315                if (defined $params{'hash_base'}) {
1316                        if (defined $params{'hash_parent_base'}) {
1317                                $href .= esc_path_info($params{'hash_parent_base'});
1318                                # skip the file_parent if it's the same as the file_name
1319                                if (defined $params{'file_parent'}) {
1320                                        if (defined $params{'file_name'} && $params{'file_parent'} eq $params{'file_name'}) {
1321                                                delete $params{'file_parent'};
1322                                        } elsif ($params{'file_parent'} !~ /\.\./) {
1323                                                $href .= ":/".esc_path_info($params{'file_parent'});
1324                                                delete $params{'file_parent'};
1325                                        }
1326                                }
1327                                $href .= "..";
1328                                delete $params{'hash_parent'};
1329                                delete $params{'hash_parent_base'};
1330                        } elsif (defined $params{'hash_parent'}) {
1331                                $href .= esc_path_info($params{'hash_parent'}). "..";
1332                                delete $params{'hash_parent'};
1333                        }
1334
1335                        $href .= esc_path_info($params{'hash_base'});
1336                        if (defined $params{'file_name'} && $params{'file_name'} !~ /\.\./) {
1337                                $href .= ":/".esc_path_info($params{'file_name'});
1338                                delete $params{'file_name'};
1339                        }
1340                        delete $params{'hash'};
1341                        delete $params{'hash_base'};
1342                } elsif (defined $params{'hash'}) {
1343                        $href .= esc_path_info($params{'hash'});
1344                        delete $params{'hash'};
1345                }
1346
1347                # If the action was a snapshot, we can absorb the
1348                # snapshot_format parameter too
1349                if ($is_snapshot) {
1350                        my $fmt = $params{'snapshot_format'};
1351                        # snapshot_format should always be defined when href()
1352                        # is called, but just in case some code forgets, we
1353                        # fall back to the default
1354                        $fmt ||= $snapshot_fmts[0];
1355                        $href .= $known_snapshot_formats{$fmt}{'suffix'};
1356                        delete $params{'snapshot_format'};
1357                }
1358        }
1359
1360        # now encode the parameters explicitly
1361        my @result = ();
1362        for (my $i = 0; $i < @cgi_param_mapping; $i += 2) {
1363                my ($name, $symbol) = ($cgi_param_mapping[$i], $cgi_param_mapping[$i+1]);
1364                if (defined $params{$name}) {
1365                        if (ref($params{$name}) eq "ARRAY") {
1366                                foreach my $par (@{$params{$name}}) {
1367                                        push @result, $symbol . "=" . esc_param($par);
1368                                }
1369                        } else {
1370                                push @result, $symbol . "=" . esc_param($params{$name});
1371                        }
1372                }
1373        }
1374        $href .= "?" . join(';', @result) if scalar @result;
1375
1376        # final transformation: trailing spaces must be escaped (URI-encoded)
1377        $href =~ s/(\s+)$/CGI::escape($1)/e;
1378
1379        if ($params{-anchor}) {
1380                $href .= "#".esc_param($params{-anchor});
1381        }
1382
1383        return $href;
1384}
1385
1386
1387## ======================================================================
1388## validation, quoting/unquoting and escaping
1389
1390sub validate_action {
1391        my $input = shift || return undef;
1392        return undef unless exists $actions{$input};
1393        return $input;
1394}
1395
1396sub validate_project {
1397        my $input = shift || return undef;
1398        if (!validate_pathname($input) ||
1399                !(-d "$projectroot/$input") ||
1400                !check_export_ok("$projectroot/$input") ||
1401                ($strict_export && !project_in_list($input))) {
1402                return undef;
1403        } else {
1404                return $input;
1405        }
1406}
1407
1408sub validate_pathname {
1409        my $input = shift || return undef;
1410
1411        # no '.' or '..' as elements of path, i.e. no '.' nor '..'
1412        # at the beginning, at the end, and between slashes.
1413        # also this catches doubled slashes
1414        if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
1415                return undef;
1416        }
1417        # no null characters
1418        if ($input =~ m!\0!) {
1419                return undef;
1420        }
1421        return $input;
1422}
1423
1424sub validate_refname {
1425        my $input = shift || return undef;
1426
1427        # textual hashes are O.K.
1428        if ($input =~ m/^[0-9a-fA-F]{40}$/) {
1429                return $input;
1430        }
1431        # it must be correct pathname
1432        $input = validate_pathname($input)
1433                or return undef;
1434        # restrictions on ref name according to git-check-ref-format
1435        if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
1436                return undef;
1437        }
1438        return $input;
1439}
1440
1441# decode sequences of octets in utf8 into Perl's internal form,
1442# which is utf-8 with utf8 flag set if needed.  gitweb writes out
1443# in utf-8 thanks to "binmode STDOUT, ':utf8'" at beginning
1444sub to_utf8 {
1445        my $str = shift;
1446        return undef unless defined $str;
1447
1448        if (utf8::is_utf8($str) || utf8::decode($str)) {
1449                return $str;
1450        } else {
1451                return decode($fallback_encoding, $str, Encode::FB_DEFAULT);
1452        }
1453}
1454
1455# quote unsafe chars, but keep the slash, even when it's not
1456# correct, but quoted slashes look too horrible in bookmarks
1457sub esc_param {
1458        my $str = shift;
1459        return undef unless defined $str;
1460        $str =~ s/([^A-Za-z0-9\-_.~()\/:@ ]+)/CGI::escape($1)/eg;
1461        $str =~ s/ /\+/g;
1462        return $str;
1463}
1464
1465# the quoting rules for path_info fragment are slightly different
1466sub esc_path_info {
1467        my $str = shift;
1468        return undef unless defined $str;
1469
1470        # path_info doesn't treat '+' as space (specially), but '?' must be escaped
1471        $str =~ s/([^A-Za-z0-9\-_.~();\/;:@&= +]+)/CGI::escape($1)/eg;
1472
1473        return $str;
1474}
1475
1476# quote unsafe chars in whole URL, so some characters cannot be quoted
1477sub esc_url {
1478        my $str = shift;
1479        return undef unless defined $str;
1480        $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&= ]+)/CGI::escape($1)/eg;
1481        $str =~ s/ /\+/g;
1482        return $str;
1483}
1484
1485# quote unsafe characters in HTML attributes
1486sub esc_attr {
1487
1488        # for XHTML conformance escaping '"' to '&quot;' is not enough
1489        return esc_html(@_);
1490}
1491
1492# replace invalid utf8 character with SUBSTITUTION sequence
1493sub esc_html {
1494        my $str = shift;
1495        my %opts = @_;
1496
1497        return undef unless defined $str;
1498
1499        $str = to_utf8($str);
1500        $str = $cgi->escapeHTML($str);
1501        if ($opts{'-nbsp'}) {
1502                $str =~ s/ /&nbsp;/g;
1503        }
1504        $str =~ s|([[:cntrl:]])|(($1 ne "\t") ? quot_cec($1) : $1)|eg;
1505        return $str;
1506}
1507
1508# quote control characters and escape filename to HTML
1509sub esc_path {
1510        my $str = shift;
1511        my %opts = @_;
1512
1513        return undef unless defined $str;
1514
1515        $str = to_utf8($str);
1516        $str = $cgi->escapeHTML($str);
1517        if ($opts{'-nbsp'}) {
1518                $str =~ s/ /&nbsp;/g;
1519        }
1520        $str =~ s|([[:cntrl:]])|quot_cec($1)|eg;
1521        return $str;
1522}
1523
1524# Sanitize for use in XHTML + application/xml+xhtm (valid XML 1.0)
1525sub sanitize {
1526        my $str = shift;
1527
1528        return undef unless defined $str;
1529
1530        $str = to_utf8($str);
1531        $str =~ s|([[:cntrl:]])|($1 =~ /[\t\n\r]/ ? $1 : quot_cec($1))|eg;
1532        return $str;
1533}
1534
1535# Make control characters "printable", using character escape codes (CEC)
1536sub quot_cec {
1537        my $cntrl = shift;
1538        my %opts = @_;
1539        my %es = ( # character escape codes, aka escape sequences
1540                "\t" => '\t',   # tab            (HT)
1541                "\n" => '\n',   # line feed      (LF)
1542                "\r" => '\r',   # carrige return (CR)
1543                "\f" => '\f',   # form feed      (FF)
1544                "\b" => '\b',   # backspace      (BS)
1545                "\a" => '\a',   # alarm (bell)   (BEL)
1546                "\e" => '\e',   # escape         (ESC)
1547                "\013" => '\v', # vertical tab   (VT)
1548                "\000" => '\0', # nul character  (NUL)
1549        );
1550        my $chr = ( (exists $es{$cntrl})
1551                    ? $es{$cntrl}
1552                    : sprintf('\%2x', ord($cntrl)) );
1553        if ($opts{-nohtml}) {
1554                return $chr;
1555        } else {
1556                return "<span class=\"cntrl\">$chr</span>";
1557        }
1558}
1559
1560# Alternatively use unicode control pictures codepoints,
1561# Unicode "printable representation" (PR)
1562sub quot_upr {
1563        my $cntrl = shift;
1564        my %opts = @_;
1565
1566        my $chr = sprintf('&#%04d;', 0x2400+ord($cntrl));
1567        if ($opts{-nohtml}) {
1568                return $chr;
1569        } else {
1570                return "<span class=\"cntrl\">$chr</span>";
1571        }
1572}
1573
1574# git may return quoted and escaped filenames
1575sub unquote {
1576        my $str = shift;
1577
1578        sub unq {
1579                my $seq = shift;
1580                my %es = ( # character escape codes, aka escape sequences
1581                        't' => "\t",   # tab            (HT, TAB)
1582                        'n' => "\n",   # newline        (NL)
1583                        'r' => "\r",   # return         (CR)
1584                        'f' => "\f",   # form feed      (FF)
1585                        'b' => "\b",   # backspace      (BS)
1586                        'a' => "\a",   # alarm (bell)   (BEL)
1587                        'e' => "\e",   # escape         (ESC)
1588                        'v' => "\013", # vertical tab   (VT)
1589                );
1590
1591                if ($seq =~ m/^[0-7]{1,3}$/) {
1592                        # octal char sequence
1593                        return chr(oct($seq));
1594                } elsif (exists $es{$seq}) {
1595                        # C escape sequence, aka character escape code
1596                        return $es{$seq};
1597                }
1598                # quoted ordinary character
1599                return $seq;
1600        }
1601
1602        if ($str =~ m/^"(.*)"$/) {
1603                # needs unquoting
1604                $str = $1;
1605                $str =~ s/\\([^0-7]|[0-7]{1,3})/unq($1)/eg;
1606        }
1607        return $str;
1608}
1609
1610# escape tabs (convert tabs to spaces)
1611sub untabify {
1612        my $line = shift;
1613
1614        while ((my $pos = index($line, "\t")) != -1) {
1615                if (my $count = (8 - ($pos % 8))) {
1616                        my $spaces = ' ' x $count;
1617                        $line =~ s/\t/$spaces/;
1618                }
1619        }
1620
1621        return $line;
1622}
1623
1624sub project_in_list {
1625        my $project = shift;
1626        my @list = git_get_projects_list();
1627        return @list && scalar(grep { $_->{'path'} eq $project } @list);
1628}
1629
1630## ----------------------------------------------------------------------
1631## HTML aware string manipulation
1632
1633# Try to chop given string on a word boundary between position
1634# $len and $len+$add_len. If there is no word boundary there,
1635# chop at $len+$add_len. Do not chop if chopped part plus ellipsis
1636# (marking chopped part) would be longer than given string.
1637sub chop_str {
1638        my $str = shift;
1639        my $len = shift;
1640        my $add_len = shift || 10;
1641        my $where = shift || 'right'; # 'left' | 'center' | 'right'
1642
1643        # Make sure perl knows it is utf8 encoded so we don't
1644        # cut in the middle of a utf8 multibyte char.
1645        $str = to_utf8($str);
1646
1647        # allow only $len chars, but don't cut a word if it would fit in $add_len
1648        # if it doesn't fit, cut it if it's still longer than the dots we would add
1649        # remove chopped character entities entirely
1650
1651        # when chopping in the middle, distribute $len into left and right part
1652        # return early if chopping wouldn't make string shorter
1653        if ($where eq 'center') {
1654                return $str if ($len + 5 >= length($str)); # filler is length 5
1655                $len = int($len/2);
1656        } else {
1657                return $str if ($len + 4 >= length($str)); # filler is length 4
1658        }
1659
1660        # regexps: ending and beginning with word part up to $add_len
1661        my $endre = qr/.{$len}\w{0,$add_len}/;
1662        my $begre = qr/\w{0,$add_len}.{$len}/;
1663
1664        if ($where eq 'left') {
1665                $str =~ m/^(.*?)($begre)$/;
1666                my ($lead, $body) = ($1, $2);
1667                if (length($lead) > 4) {
1668                        $lead = " ...";
1669                }
1670                return "$lead$body";
1671
1672        } elsif ($where eq 'center') {
1673                $str =~ m/^($endre)(.*)$/;
1674                my ($left, $str)  = ($1, $2);
1675                $str =~ m/^(.*?)($begre)$/;
1676                my ($mid, $right) = ($1, $2);
1677                if (length($mid) > 5) {
1678                        $mid = " ... ";
1679                }
1680                return "$left$mid$right";
1681
1682        } else {
1683                $str =~ m/^($endre)(.*)$/;
1684                my $body = $1;
1685                my $tail = $2;
1686                if (length($tail) > 4) {
1687                        $tail = "... ";
1688                }
1689                return "$body$tail";
1690        }
1691}
1692
1693# takes the same arguments as chop_str, but also wraps a <span> around the
1694# result with a title attribute if it does get chopped. Additionally, the
1695# string is HTML-escaped.
1696sub chop_and_escape_str {
1697        my ($str) = @_;
1698
1699        my $chopped = chop_str(@_);
1700        $str = to_utf8($str);
1701        if ($chopped eq $str) {
1702                return esc_html($chopped);
1703        } else {
1704                $str =~ s/[[:cntrl:]]/?/g;
1705                return $cgi->span({-title=>$str}, esc_html($chopped));
1706        }
1707}
1708
1709## ----------------------------------------------------------------------
1710## functions returning short strings
1711
1712# CSS class for given age value (in seconds)
1713sub age_class {
1714        my $age = shift;
1715
1716        if (!defined $age) {
1717                return "noage";
1718        } elsif ($age < 60*60*2) {
1719                return "age0";
1720        } elsif ($age < 60*60*24*2) {
1721                return "age1";
1722        } else {
1723                return "age2";
1724        }
1725}
1726
1727# convert age in seconds to "nn units ago" string
1728sub age_string {
1729        my $age = shift;
1730        my $age_str;
1731
1732        if ($age > 60*60*24*365*2) {
1733                $age_str = (int $age/60/60/24/365);
1734                $age_str .= " years ago";
1735        } elsif ($age > 60*60*24*(365/12)*2) {
1736                $age_str = int $age/60/60/24/(365/12);
1737                $age_str .= " months ago";
1738        } elsif ($age > 60*60*24*7*2) {
1739                $age_str = int $age/60/60/24/7;
1740                $age_str .= " weeks ago";
1741        } elsif ($age > 60*60*24*2) {
1742                $age_str = int $age/60/60/24;
1743                $age_str .= " days ago";
1744        } elsif ($age > 60*60*2) {
1745                $age_str = int $age/60/60;
1746                $age_str .= " hours ago";
1747        } elsif ($age > 60*2) {
1748                $age_str = int $age/60;
1749                $age_str .= " min ago";
1750        } elsif ($age > 2) {
1751                $age_str = int $age;
1752                $age_str .= " sec ago";
1753        } else {
1754                $age_str .= " right now";
1755        }
1756        return $age_str;
1757}
1758
1759use constant {
1760        S_IFINVALID => 0030000,
1761        S_IFGITLINK => 0160000,
1762};
1763
1764# submodule/subproject, a commit object reference
1765sub S_ISGITLINK {
1766        my $mode = shift;
1767
1768        return (($mode & S_IFMT) == S_IFGITLINK)
1769}
1770
1771# convert file mode in octal to symbolic file mode string
1772sub mode_str {
1773        my $mode = oct shift;
1774
1775        if (S_ISGITLINK($mode)) {
1776                return 'm---------';
1777        } elsif (S_ISDIR($mode & S_IFMT)) {
1778                return 'drwxr-xr-x';
1779        } elsif (S_ISLNK($mode)) {
1780                return 'lrwxrwxrwx';
1781        } elsif (S_ISREG($mode)) {
1782                # git cares only about the executable bit
1783                if ($mode & S_IXUSR) {
1784                        return '-rwxr-xr-x';
1785                } else {
1786                        return '-rw-r--r--';
1787                };
1788        } else {
1789                return '----------';
1790        }
1791}
1792
1793# convert file mode in octal to file type string
1794sub file_type {
1795        my $mode = shift;
1796
1797        if ($mode !~ m/^[0-7]+$/) {
1798                return $mode;
1799        } else {
1800                $mode = oct $mode;
1801        }
1802
1803        if (S_ISGITLINK($mode)) {
1804                return "submodule";
1805        } elsif (S_ISDIR($mode & S_IFMT)) {
1806                return "directory";
1807        } elsif (S_ISLNK($mode)) {
1808                return "symlink";
1809        } elsif (S_ISREG($mode)) {
1810                return "file";
1811        } else {
1812                return "unknown";
1813        }
1814}
1815
1816# convert file mode in octal to file type description string
1817sub file_type_long {
1818        my $mode = shift;
1819
1820        if ($mode !~ m/^[0-7]+$/) {
1821                return $mode;
1822        } else {
1823                $mode = oct $mode;
1824        }
1825
1826        if (S_ISGITLINK($mode)) {
1827                return "submodule";
1828        } elsif (S_ISDIR($mode & S_IFMT)) {
1829                return "directory";
1830        } elsif (S_ISLNK($mode)) {
1831                return "symlink";
1832        } elsif (S_ISREG($mode)) {
1833                if ($mode & S_IXUSR) {
1834                        return "executable";
1835                } else {
1836                        return "file";
1837                };
1838        } else {
1839                return "unknown";
1840        }
1841}
1842
1843
1844## ----------------------------------------------------------------------
1845## functions returning short HTML fragments, or transforming HTML fragments
1846## which don't belong to other sections
1847
1848# format line of commit message.
1849sub format_log_line_html {
1850        my $line = shift;
1851
1852        $line = esc_html($line, -nbsp=>1);
1853        $line =~ s{\b([0-9a-fA-F]{8,40})\b}{
1854                $cgi->a({-href => href(action=>"object", hash=>$1),
1855                                        -class => "text"}, $1);
1856        }eg;
1857
1858        return $line;
1859}
1860
1861# format marker of refs pointing to given object
1862
1863# the destination action is chosen based on object type and current context:
1864# - for annotated tags, we choose the tag view unless it's the current view
1865#   already, in which case we go to shortlog view
1866# - for other refs, we keep the current view if we're in history, shortlog or
1867#   log view, and select shortlog otherwise
1868sub format_ref_marker {
1869        my ($refs, $id) = @_;
1870        my $markers = '';
1871
1872        if (defined $refs->{$id}) {
1873                foreach my $ref (@{$refs->{$id}}) {
1874                        # this code exploits the fact that non-lightweight tags are the
1875                        # only indirect objects, and that they are the only objects for which
1876                        # we want to use tag instead of shortlog as action
1877                        my ($type, $name) = qw();
1878                        my $indirect = ($ref =~ s/\^\{\}$//);
1879                        # e.g. tags/v2.6.11 or heads/next
1880                        if ($ref =~ m!^(.*?)s?/(.*)$!) {
1881                                $type = $1;
1882                                $name = $2;
1883                        } else {
1884                                $type = "ref";
1885                                $name = $ref;
1886                        }
1887
1888                        my $class = $type;
1889                        $class .= " indirect" if $indirect;
1890
1891                        my $dest_action = "shortlog";
1892
1893                        if ($indirect) {
1894                                $dest_action = "tag" unless $action eq "tag";
1895                        } elsif ($action =~ /^(history|(short)?log)$/) {
1896                                $dest_action = $action;
1897                        }
1898
1899                        my $dest = "";
1900                        $dest .= "refs/" unless $ref =~ m!^refs/!;
1901                        $dest .= $ref;
1902
1903                        my $link = $cgi->a({
1904                                -href => href(
1905                                        action=>$dest_action,
1906                                        hash=>$dest
1907                                )}, $name);
1908
1909                        $markers .= " <span class=\"".esc_attr($class)."\" title=\"".esc_attr($ref)."\">" .
1910                                $link . "</span>";
1911                }
1912        }
1913
1914        if ($markers) {
1915                return ' <span class="refs">'. $markers . '</span>';
1916        } else {
1917                return "";
1918        }
1919}
1920
1921# format, perhaps shortened and with markers, title line
1922sub format_subject_html {
1923        my ($long, $short, $href, $extra) = @_;
1924        $extra = '' unless defined($extra);
1925
1926        if (length($short) < length($long)) {
1927                $long =~ s/[[:cntrl:]]/?/g;
1928                return $cgi->a({-href => $href, -class => "list subject",
1929                                -title => to_utf8($long)},
1930                       esc_html($short)) . $extra;
1931        } else {
1932                return $cgi->a({-href => $href, -class => "list subject"},
1933                       esc_html($long)) . $extra;
1934        }
1935}
1936
1937# Rather than recomputing the url for an email multiple times, we cache it
1938# after the first hit. This gives a visible benefit in views where the avatar
1939# for the same email is used repeatedly (e.g. shortlog).
1940# The cache is shared by all avatar engines (currently gravatar only), which
1941# are free to use it as preferred. Since only one avatar engine is used for any
1942# given page, there's no risk for cache conflicts.
1943our %avatar_cache = ();
1944
1945# Compute the picon url for a given email, by using the picon search service over at
1946# http://www.cs.indiana.edu/picons/search.html
1947sub picon_url {
1948        my $email = lc shift;
1949        if (!$avatar_cache{$email}) {
1950                my ($user, $domain) = split('@', $email);
1951                $avatar_cache{$email} =
1952                        "http://www.cs.indiana.edu/cgi-pub/kinzler/piconsearch.cgi/" .
1953                        "$domain/$user/" .
1954                        "users+domains+unknown/up/single";
1955        }
1956        return $avatar_cache{$email};
1957}
1958
1959# Compute the gravatar url for a given email, if it's not in the cache already.
1960# Gravatar stores only the part of the URL before the size, since that's the
1961# one computationally more expensive. This also allows reuse of the cache for
1962# different sizes (for this particular engine).
1963sub gravatar_url {
1964        my $email = lc shift;
1965        my $size = shift;
1966        $avatar_cache{$email} ||=
1967                "http://www.gravatar.com/avatar/" .
1968                        Digest::MD5::md5_hex($email) . "?s=";
1969        return $avatar_cache{$email} . $size;
1970}
1971
1972# Insert an avatar for the given $email at the given $size if the feature
1973# is enabled.
1974sub git_get_avatar {
1975        my ($email, %opts) = @_;
1976        my $pre_white  = ($opts{-pad_before} ? "&nbsp;" : "");
1977        my $post_white = ($opts{-pad_after}  ? "&nbsp;" : "");
1978        $opts{-size} ||= 'default';
1979        my $size = $avatar_size{$opts{-size}} || $avatar_size{'default'};
1980        my $url = "";
1981        if ($git_avatar eq 'gravatar') {
1982                $url = gravatar_url($email, $size);
1983        } elsif ($git_avatar eq 'picon') {
1984                $url = picon_url($email);
1985        }
1986        # Other providers can be added by extending the if chain, defining $url
1987        # as needed. If no variant puts something in $url, we assume avatars
1988        # are completely disabled/unavailable.
1989        if ($url) {
1990                return $pre_white .
1991                       "<img width=\"$size\" " .
1992                            "class=\"avatar\" " .
1993                            "src=\"".esc_url($url)."\" " .
1994                            "alt=\"\" " .
1995                       "/>" . $post_white;
1996        } else {
1997                return "";
1998        }
1999}
2000
2001sub format_search_author {
2002        my ($author, $searchtype, $displaytext) = @_;
2003        my $have_search = gitweb_check_feature('search');
2004
2005        if ($have_search) {
2006                my $performed = "";
2007                if ($searchtype eq 'author') {
2008                        $performed = "authored";
2009                } elsif ($searchtype eq 'committer') {
2010                        $performed = "committed";
2011                }
2012
2013                return $cgi->a({-href => href(action=>"search", hash=>$hash,
2014                                searchtext=>$author,
2015                                searchtype=>$searchtype), class=>"list",
2016                                title=>"Search for commits $performed by $author"},
2017                                $displaytext);
2018
2019        } else {
2020                return $displaytext;
2021        }
2022}
2023
2024# format the author name of the given commit with the given tag
2025# the author name is chopped and escaped according to the other
2026# optional parameters (see chop_str).
2027sub format_author_html {
2028        my $tag = shift;
2029        my $co = shift;
2030        my $author = chop_and_escape_str($co->{'author_name'}, @_);
2031        return "<$tag class=\"author\">" .
2032               format_search_author($co->{'author_name'}, "author",
2033                       git_get_avatar($co->{'author_email'}, -pad_after => 1) .
2034                       $author) .
2035               "</$tag>";
2036}
2037
2038# format git diff header line, i.e. "diff --(git|combined|cc) ..."
2039sub format_git_diff_header_line {
2040        my $line = shift;
2041        my $diffinfo = shift;
2042        my ($from, $to) = @_;
2043
2044        if ($diffinfo->{'nparents'}) {
2045                # combined diff
2046                $line =~ s!^(diff (.*?) )"?.*$!$1!;
2047                if ($to->{'href'}) {
2048                        $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
2049                                         esc_path($to->{'file'}));
2050                } else { # file was deleted (no href)
2051                        $line .= esc_path($to->{'file'});
2052                }
2053        } else {
2054                # "ordinary" diff
2055                $line =~ s!^(diff (.*?) )"?a/.*$!$1!;
2056                if ($from->{'href'}) {
2057                        $line .= $cgi->a({-href => $from->{'href'}, -class => "path"},
2058                                         'a/' . esc_path($from->{'file'}));
2059                } else { # file was added (no href)
2060                        $line .= 'a/' . esc_path($from->{'file'});
2061                }
2062                $line .= ' ';
2063                if ($to->{'href'}) {
2064                        $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
2065                                         'b/' . esc_path($to->{'file'}));
2066                } else { # file was deleted
2067                        $line .= 'b/' . esc_path($to->{'file'});
2068                }
2069        }
2070
2071        return "<div class=\"diff header\">$line</div>\n";
2072}
2073
2074# format extended diff header line, before patch itself
2075sub format_extended_diff_header_line {
2076        my $line = shift;
2077        my $diffinfo = shift;
2078        my ($from, $to) = @_;
2079
2080        # match <path>
2081        if ($line =~ s!^((copy|rename) from ).*$!$1! && $from->{'href'}) {
2082                $line .= $cgi->a({-href=>$from->{'href'}, -class=>"path"},
2083                                       esc_path($from->{'file'}));
2084        }
2085        if ($line =~ s!^((copy|rename) to ).*$!$1! && $to->{'href'}) {
2086                $line .= $cgi->a({-href=>$to->{'href'}, -class=>"path"},
2087                                 esc_path($to->{'file'}));
2088        }
2089        # match single <mode>
2090        if ($line =~ m/\s(\d{6})$/) {
2091                $line .= '<span class="info"> (' .
2092                         file_type_long($1) .
2093                         ')</span>';
2094        }
2095        # match <hash>
2096        if ($line =~ m/^index [0-9a-fA-F]{40},[0-9a-fA-F]{40}/) {
2097                # can match only for combined diff
2098                $line = 'index ';
2099                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2100                        if ($from->{'href'}[$i]) {
2101                                $line .= $cgi->a({-href=>$from->{'href'}[$i],
2102                                                  -class=>"hash"},
2103                                                 substr($diffinfo->{'from_id'}[$i],0,7));
2104                        } else {
2105                                $line .= '0' x 7;
2106                        }
2107                        # separator
2108                        $line .= ',' if ($i < $diffinfo->{'nparents'} - 1);
2109                }
2110                $line .= '..';
2111                if ($to->{'href'}) {
2112                        $line .= $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
2113                                         substr($diffinfo->{'to_id'},0,7));
2114                } else {
2115                        $line .= '0' x 7;
2116                }
2117
2118        } elsif ($line =~ m/^index [0-9a-fA-F]{40}..[0-9a-fA-F]{40}/) {
2119                # can match only for ordinary diff
2120                my ($from_link, $to_link);
2121                if ($from->{'href'}) {
2122                        $from_link = $cgi->a({-href=>$from->{'href'}, -class=>"hash"},
2123                                             substr($diffinfo->{'from_id'},0,7));
2124                } else {
2125                        $from_link = '0' x 7;
2126                }
2127                if ($to->{'href'}) {
2128                        $to_link = $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
2129                                           substr($diffinfo->{'to_id'},0,7));
2130                } else {
2131                        $to_link = '0' x 7;
2132                }
2133                my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2134                $line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
2135        }
2136
2137        return $line . "<br/>\n";
2138}
2139
2140# format from-file/to-file diff header
2141sub format_diff_from_to_header {
2142        my ($from_line, $to_line, $diffinfo, $from, $to, @parents) = @_;
2143        my $line;
2144        my $result = '';
2145
2146        $line = $from_line;
2147        #assert($line =~ m/^---/) if DEBUG;
2148        # no extra formatting for "^--- /dev/null"
2149        if (! $diffinfo->{'nparents'}) {
2150                # ordinary (single parent) diff
2151                if ($line =~ m!^--- "?a/!) {
2152                        if ($from->{'href'}) {
2153                                $line = '--- a/' .
2154                                        $cgi->a({-href=>$from->{'href'}, -class=>"path"},
2155                                                esc_path($from->{'file'}));
2156                        } else {
2157                                $line = '--- a/' .
2158                                        esc_path($from->{'file'});
2159                        }
2160                }
2161                $result .= qq!<div class="diff from_file">$line</div>\n!;
2162
2163        } else {
2164                # combined diff (merge commit)
2165                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2166                        if ($from->{'href'}[$i]) {
2167                                $line = '--- ' .
2168                                        $cgi->a({-href=>href(action=>"blobdiff",
2169                                                             hash_parent=>$diffinfo->{'from_id'}[$i],
2170                                                             hash_parent_base=>$parents[$i],
2171                                                             file_parent=>$from->{'file'}[$i],
2172                                                             hash=>$diffinfo->{'to_id'},
2173                                                             hash_base=>$hash,
2174                                                             file_name=>$to->{'file'}),
2175                                                 -class=>"path",
2176                                                 -title=>"diff" . ($i+1)},
2177                                                $i+1) .
2178                                        '/' .
2179                                        $cgi->a({-href=>$from->{'href'}[$i], -class=>"path"},
2180                                                esc_path($from->{'file'}[$i]));
2181                        } else {
2182                                $line = '--- /dev/null';
2183                        }
2184                        $result .= qq!<div class="diff from_file">$line</div>\n!;
2185                }
2186        }
2187
2188        $line = $to_line;
2189        #assert($line =~ m/^\+\+\+/) if DEBUG;
2190        # no extra formatting for "^+++ /dev/null"
2191        if ($line =~ m!^\+\+\+ "?b/!) {
2192                if ($to->{'href'}) {
2193                        $line = '+++ b/' .
2194                                $cgi->a({-href=>$to->{'href'}, -class=>"path"},
2195                                        esc_path($to->{'file'}));
2196                } else {
2197                        $line = '+++ b/' .
2198                                esc_path($to->{'file'});
2199                }
2200        }
2201        $result .= qq!<div class="diff to_file">$line</div>\n!;
2202
2203        return $result;
2204}
2205
2206# create note for patch simplified by combined diff
2207sub format_diff_cc_simplified {
2208        my ($diffinfo, @parents) = @_;
2209        my $result = '';
2210
2211        $result .= "<div class=\"diff header\">" .
2212                   "diff --cc ";
2213        if (!is_deleted($diffinfo)) {
2214                $result .= $cgi->a({-href => href(action=>"blob",
2215                                                  hash_base=>$hash,
2216                                                  hash=>$diffinfo->{'to_id'},
2217                                                  file_name=>$diffinfo->{'to_file'}),
2218                                    -class => "path"},
2219                                   esc_path($diffinfo->{'to_file'}));
2220        } else {
2221                $result .= esc_path($diffinfo->{'to_file'});
2222        }
2223        $result .= "</div>\n" . # class="diff header"
2224                   "<div class=\"diff nodifferences\">" .
2225                   "Simple merge" .
2226                   "</div>\n"; # class="diff nodifferences"
2227
2228        return $result;
2229}
2230
2231# format patch (diff) line (not to be used for diff headers)
2232sub format_diff_line {
2233        my $line = shift;
2234        my ($from, $to) = @_;
2235        my $diff_class = "";
2236
2237        chomp $line;
2238
2239        if ($from && $to && ref($from->{'href'}) eq "ARRAY") {
2240                # combined diff
2241                my $prefix = substr($line, 0, scalar @{$from->{'href'}});
2242                if ($line =~ m/^\@{3}/) {
2243                        $diff_class = " chunk_header";
2244                } elsif ($line =~ m/^\\/) {
2245                        $diff_class = " incomplete";
2246                } elsif ($prefix =~ tr/+/+/) {
2247                        $diff_class = " add";
2248                } elsif ($prefix =~ tr/-/-/) {
2249                        $diff_class = " rem";
2250                }
2251        } else {
2252                # assume ordinary diff
2253                my $char = substr($line, 0, 1);
2254                if ($char eq '+') {
2255                        $diff_class = " add";
2256                } elsif ($char eq '-') {
2257                        $diff_class = " rem";
2258                } elsif ($char eq '@') {
2259                        $diff_class = " chunk_header";
2260                } elsif ($char eq "\\") {
2261                        $diff_class = " incomplete";
2262                }
2263        }
2264        $line = untabify($line);
2265        if ($from && $to && $line =~ m/^\@{2} /) {
2266                my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
2267                        $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
2268
2269                $from_lines = 0 unless defined $from_lines;
2270                $to_lines   = 0 unless defined $to_lines;
2271
2272                if ($from->{'href'}) {
2273                        $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
2274                                             -class=>"list"}, $from_text);
2275                }
2276                if ($to->{'href'}) {
2277                        $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
2278                                             -class=>"list"}, $to_text);
2279                }
2280                $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
2281                        "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
2282                return "<div class=\"diff$diff_class\">$line</div>\n";
2283        } elsif ($from && $to && $line =~ m/^\@{3}/) {
2284                my ($prefix, $ranges, $section) = $line =~ m/^(\@+) (.*?) \@+(.*)$/;
2285                my (@from_text, @from_start, @from_nlines, $to_text, $to_start, $to_nlines);
2286
2287                @from_text = split(' ', $ranges);
2288                for (my $i = 0; $i < @from_text; ++$i) {
2289                        ($from_start[$i], $from_nlines[$i]) =
2290                                (split(',', substr($from_text[$i], 1)), 0);
2291                }
2292
2293                $to_text   = pop @from_text;
2294                $to_start  = pop @from_start;
2295                $to_nlines = pop @from_nlines;
2296
2297                $line = "<span class=\"chunk_info\">$prefix ";
2298                for (my $i = 0; $i < @from_text; ++$i) {
2299                        if ($from->{'href'}[$i]) {
2300                                $line .= $cgi->a({-href=>"$from->{'href'}[$i]#l$from_start[$i]",
2301                                                  -class=>"list"}, $from_text[$i]);
2302                        } else {
2303                                $line .= $from_text[$i];
2304                        }
2305                        $line .= " ";
2306                }
2307                if ($to->{'href'}) {
2308                        $line .= $cgi->a({-href=>"$to->{'href'}#l$to_start",
2309                                          -class=>"list"}, $to_text);
2310                } else {
2311                        $line .= $to_text;
2312                }
2313                $line .= " $prefix</span>" .
2314                         "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
2315                return "<div class=\"diff$diff_class\">$line</div>\n";
2316        }
2317        return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
2318}
2319
2320# Generates undef or something like "_snapshot_" or "snapshot (_tbz2_ _zip_)",
2321# linked.  Pass the hash of the tree/commit to snapshot.
2322sub format_snapshot_links {
2323        my ($hash) = @_;
2324        my $num_fmts = @snapshot_fmts;
2325        if ($num_fmts > 1) {
2326                # A parenthesized list of links bearing format names.
2327                # e.g. "snapshot (_tar.gz_ _zip_)"
2328                return "snapshot (" . join(' ', map
2329                        $cgi->a({
2330                                -href => href(
2331                                        action=>"snapshot",
2332                                        hash=>$hash,
2333                                        snapshot_format=>$_
2334                                )
2335                        }, $known_snapshot_formats{$_}{'display'})
2336                , @snapshot_fmts) . ")";
2337        } elsif ($num_fmts == 1) {
2338                # A single "snapshot" link whose tooltip bears the format name.
2339                # i.e. "_snapshot_"
2340                my ($fmt) = @snapshot_fmts;
2341                return
2342                        $cgi->a({
2343                                -href => href(
2344                                        action=>"snapshot",
2345                                        hash=>$hash,
2346                                        snapshot_format=>$fmt
2347                                ),
2348                                -title => "in format: $known_snapshot_formats{$fmt}{'display'}"
2349                        }, "snapshot");
2350        } else { # $num_fmts == 0
2351                return undef;
2352        }
2353}
2354
2355## ......................................................................
2356## functions returning values to be passed, perhaps after some
2357## transformation, to other functions; e.g. returning arguments to href()
2358
2359# returns hash to be passed to href to generate gitweb URL
2360# in -title key it returns description of link
2361sub get_feed_info {
2362        my $format = shift || 'Atom';
2363        my %res = (action => lc($format));
2364
2365        # feed links are possible only for project views
2366        return unless (defined $project);
2367        # some views should link to OPML, or to generic project feed,
2368        # or don't have specific feed yet (so they should use generic)
2369        return if (!$action || $action =~ /^(?:tags|heads|forks|tag|search)$/x);
2370
2371        my $branch;
2372        # branches refs uses 'refs/heads/' prefix (fullname) to differentiate
2373        # from tag links; this also makes possible to detect branch links
2374        if ((defined $hash_base && $hash_base =~ m!^refs/heads/(.*)$!) ||
2375            (defined $hash      && $hash      =~ m!^refs/heads/(.*)$!)) {
2376                $branch = $1;
2377        }
2378        # find log type for feed description (title)
2379        my $type = 'log';
2380        if (defined $file_name) {
2381                $type  = "history of $file_name";
2382                $type .= "/" if ($action eq 'tree');
2383                $type .= " on '$branch'" if (defined $branch);
2384        } else {
2385                $type = "log of $branch" if (defined $branch);
2386        }
2387
2388        $res{-title} = $type;
2389        $res{'hash'} = (defined $branch ? "refs/heads/$branch" : undef);
2390        $res{'file_name'} = $file_name;
2391
2392        return %res;
2393}
2394
2395## ----------------------------------------------------------------------
2396## git utility subroutines, invoking git commands
2397
2398# returns path to the core git executable and the --git-dir parameter as list
2399sub git_cmd {
2400        $number_of_git_cmds++;
2401        return $GIT, '--git-dir='.$git_dir;
2402}
2403
2404# quote the given arguments for passing them to the shell
2405# quote_command("command", "arg 1", "arg with ' and ! characters")
2406# => "'command' 'arg 1' 'arg with '\'' and '\!' characters'"
2407# Try to avoid using this function wherever possible.
2408sub quote_command {
2409        return join(' ',
2410                map { my $a = $_; $a =~ s/(['!])/'\\$1'/g; "'$a'" } @_ );
2411}
2412
2413# get HEAD ref of given project as hash
2414sub git_get_head_hash {
2415        return git_get_full_hash(shift, 'HEAD');
2416}
2417
2418sub git_get_full_hash {
2419        return git_get_hash(@_);
2420}
2421
2422sub git_get_short_hash {
2423        return git_get_hash(@_, '--short=7');
2424}
2425
2426sub git_get_hash {
2427        my ($project, $hash, @options) = @_;
2428        my $o_git_dir = $git_dir;
2429        my $retval = undef;
2430        $git_dir = "$projectroot/$project";
2431        if (open my $fd, '-|', git_cmd(), 'rev-parse',
2432            '--verify', '-q', @options, $hash) {
2433                $retval = <$fd>;
2434                chomp $retval if defined $retval;
2435                close $fd;
2436        }
2437        if (defined $o_git_dir) {
2438                $git_dir = $o_git_dir;
2439        }
2440        return $retval;
2441}
2442
2443# get type of given object
2444sub git_get_type {
2445        my $hash = shift;
2446
2447        open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
2448        my $type = <$fd>;
2449        close $fd or return;
2450        chomp $type;
2451        return $type;
2452}
2453
2454# repository configuration
2455our $config_file = '';
2456our %config;
2457
2458# store multiple values for single key as anonymous array reference
2459# single values stored directly in the hash, not as [ <value> ]
2460sub hash_set_multi {
2461        my ($hash, $key, $value) = @_;
2462
2463        if (!exists $hash->{$key}) {
2464                $hash->{$key} = $value;
2465        } elsif (!ref $hash->{$key}) {
2466                $hash->{$key} = [ $hash->{$key}, $value ];
2467        } else {
2468                push @{$hash->{$key}}, $value;
2469        }
2470}
2471
2472# return hash of git project configuration
2473# optionally limited to some section, e.g. 'gitweb'
2474sub git_parse_project_config {
2475        my $section_regexp = shift;
2476        my %config;
2477
2478        local $/ = "\0";
2479
2480        open my $fh, "-|", git_cmd(), "config", '-z', '-l',
2481                or return;
2482
2483        while (my $keyval = <$fh>) {
2484                chomp $keyval;
2485                my ($key, $value) = split(/\n/, $keyval, 2);
2486
2487                hash_set_multi(\%config, $key, $value)
2488                        if (!defined $section_regexp || $key =~ /^(?:$section_regexp)\./o);
2489        }
2490        close $fh;
2491
2492        return %config;
2493}
2494
2495# convert config value to boolean: 'true' or 'false'
2496# no value, number > 0, 'true' and 'yes' values are true
2497# rest of values are treated as false (never as error)
2498sub config_to_bool {
2499        my $val = shift;
2500
2501        return 1 if !defined $val;             # section.key
2502
2503        # strip leading and trailing whitespace
2504        $val =~ s/^\s+//;
2505        $val =~ s/\s+$//;
2506
2507        return (($val =~ /^\d+$/ && $val) ||   # section.key = 1
2508                ($val =~ /^(?:true|yes)$/i));  # section.key = true
2509}
2510
2511# convert config value to simple decimal number
2512# an optional value suffix of 'k', 'm', or 'g' will cause the value
2513# to be multiplied by 1024, 1048576, or 1073741824
2514sub config_to_int {
2515        my $val = shift;
2516
2517        # strip leading and trailing whitespace
2518        $val =~ s/^\s+//;
2519        $val =~ s/\s+$//;
2520
2521        if (my ($num, $unit) = ($val =~ /^([0-9]*)([kmg])$/i)) {
2522                $unit = lc($unit);
2523                # unknown unit is treated as 1
2524                return $num * ($unit eq 'g' ? 1073741824 :
2525                               $unit eq 'm' ?    1048576 :
2526                               $unit eq 'k' ?       1024 : 1);
2527        }
2528        return $val;
2529}
2530
2531# convert config value to array reference, if needed
2532sub config_to_multi {
2533        my $val = shift;
2534
2535        return ref($val) ? $val : (defined($val) ? [ $val ] : []);
2536}
2537
2538sub git_get_project_config {
2539        my ($key, $type) = @_;
2540
2541        return unless defined $git_dir;
2542
2543        # key sanity check
2544        return unless ($key);
2545        # only subsection, if exists, is case sensitive,
2546        # and not lowercased by 'git config -z -l'
2547        if (my ($hi, $mi, $lo) = ($key =~ /^([^.]*)\.(.*)\.([^.]*)$/)) {
2548                $key = join(".", lc($hi), $mi, lc($lo));
2549        } else {
2550                $key = lc($key);
2551        }
2552        $key =~ s/^gitweb\.//;
2553        return if ($key =~ m/\W/);
2554
2555        # type sanity check
2556        if (defined $type) {
2557                $type =~ s/^--//;
2558                $type = undef
2559                        unless ($type eq 'bool' || $type eq 'int');
2560        }
2561
2562        # get config
2563        if (!defined $config_file ||
2564            $config_file ne "$git_dir/config") {
2565                %config = git_parse_project_config('gitweb');
2566                $config_file = "$git_dir/config";
2567        }
2568
2569        # check if config variable (key) exists
2570        return unless exists $config{"gitweb.$key"};
2571
2572        # ensure given type
2573        if (!defined $type) {
2574                return $config{"gitweb.$key"};
2575        } elsif ($type eq 'bool') {
2576                # backward compatibility: 'git config --bool' returns true/false
2577                return config_to_bool($config{"gitweb.$key"}) ? 'true' : 'false';
2578        } elsif ($type eq 'int') {
2579                return config_to_int($config{"gitweb.$key"});
2580        }
2581        return $config{"gitweb.$key"};
2582}
2583
2584# get hash of given path at given ref
2585sub git_get_hash_by_path {
2586        my $base = shift;
2587        my $path = shift || return undef;
2588        my $type = shift;
2589
2590        $path =~ s,/+$,,;
2591
2592        open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
2593                or die_error(500, "Open git-ls-tree failed");
2594        my $line = <$fd>;
2595        close $fd or return undef;
2596
2597        if (!defined $line) {
2598                # there is no tree or hash given by $path at $base
2599                return undef;
2600        }
2601
2602        #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
2603        $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
2604        if (defined $type && $type ne $2) {
2605                # type doesn't match
2606                return undef;
2607        }
2608        return $3;
2609}
2610
2611# get path of entry with given hash at given tree-ish (ref)
2612# used to get 'from' filename for combined diff (merge commit) for renames
2613sub git_get_path_by_hash {
2614        my $base = shift || return;
2615        my $hash = shift || return;
2616
2617        local $/ = "\0";
2618
2619        open my $fd, "-|", git_cmd(), "ls-tree", '-r', '-t', '-z', $base
2620                or return undef;
2621        while (my $line = <$fd>) {
2622                chomp $line;
2623
2624                #'040000 tree 595596a6a9117ddba9fe379b6b012b558bac8423  gitweb'
2625                #'100644 blob e02e90f0429be0d2a69b76571101f20b8f75530f  gitweb/README'
2626                if ($line =~ m/(?:[0-9]+) (?:.+) $hash\t(.+)$/) {
2627                        close $fd;
2628                        return $1;
2629                }
2630        }
2631        close $fd;
2632        return undef;
2633}
2634
2635## ......................................................................
2636## git utility functions, directly accessing git repository
2637
2638# get the value of config variable either from file named as the variable
2639# itself in the repository ($GIT_DIR/$name file), or from gitweb.$name
2640# configuration variable in the repository config file.
2641sub git_get_file_or_project_config {
2642        my ($path, $name) = @_;
2643
2644        $git_dir = "$projectroot/$path";
2645        open my $fd, '<', "$git_dir/$name"
2646                or return git_get_project_config($name);
2647        my $conf = <$fd>;
2648        close $fd;
2649        if (defined $conf) {
2650                chomp $conf;
2651        }
2652        return $conf;
2653}
2654
2655sub git_get_project_description {
2656        my $path = shift;
2657        return git_get_file_or_project_config($path, 'description');
2658}
2659
2660sub git_get_project_category {
2661        my $path = shift;
2662        return git_get_file_or_project_config($path, 'category');
2663}
2664
2665
2666# supported formats:
2667# * $GIT_DIR/ctags/<tagname> file (in 'ctags' subdirectory)
2668#   - if its contents is a number, use it as tag weight,
2669#   - otherwise add a tag with weight 1
2670# * $GIT_DIR/ctags file, each line is a tag (with weight 1)
2671#   the same value multiple times increases tag weight
2672# * `gitweb.ctag' multi-valued repo config variable
2673sub git_get_project_ctags {
2674        my $project = shift;
2675        my $ctags = {};
2676
2677        $git_dir = "$projectroot/$project";
2678        if (opendir my $dh, "$git_dir/ctags") {
2679                my @files = grep { -f $_ } map { "$git_dir/ctags/$_" } readdir($dh);
2680                foreach my $tagfile (@files) {
2681                        open my $ct, '<', $tagfile
2682                                or next;
2683                        my $val = <$ct>;
2684                        chomp $val if $val;
2685                        close $ct;
2686
2687                        (my $ctag = $tagfile) =~ s#.*/##;
2688                        if ($val =~ /^\d+$/) {
2689                                $ctags->{$ctag} = $val;
2690                        } else {
2691                                $ctags->{$ctag} = 1;
2692                        }
2693                }
2694                closedir $dh;
2695
2696        } elsif (open my $fh, '<', "$git_dir/ctags") {
2697                while (my $line = <$fh>) {
2698                        chomp $line;
2699                        $ctags->{$line}++ if $line;
2700                }
2701                close $fh;
2702
2703        } else {
2704                my $taglist = config_to_multi(git_get_project_config('ctag'));
2705                foreach my $tag (@$taglist) {
2706                        $ctags->{$tag}++;
2707                }
2708        }
2709
2710        return $ctags;
2711}
2712
2713# return hash, where keys are content tags ('ctags'),
2714# and values are sum of weights of given tag in every project
2715sub git_gather_all_ctags {
2716        my $projects = shift;
2717        my $ctags = {};
2718
2719        foreach my $p (@$projects) {
2720                foreach my $ct (keys %{$p->{'ctags'}}) {
2721                        $ctags->{$ct} += $p->{'ctags'}->{$ct};
2722                }
2723        }
2724
2725        return $ctags;
2726}
2727
2728sub git_populate_project_tagcloud {
2729        my $ctags = shift;
2730
2731        # First, merge different-cased tags; tags vote on casing
2732        my %ctags_lc;
2733        foreach (keys %$ctags) {
2734                $ctags_lc{lc $_}->{count} += $ctags->{$_};
2735                if (not $ctags_lc{lc $_}->{topcount}
2736                    or $ctags_lc{lc $_}->{topcount} < $ctags->{$_}) {
2737                        $ctags_lc{lc $_}->{topcount} = $ctags->{$_};
2738                        $ctags_lc{lc $_}->{topname} = $_;
2739                }
2740        }
2741
2742        my $cloud;
2743        my $matched = $cgi->param('by_tag');
2744        if (eval { require HTML::TagCloud; 1; }) {
2745                $cloud = HTML::TagCloud->new;
2746                foreach my $ctag (sort keys %ctags_lc) {
2747                        # Pad the title with spaces so that the cloud looks
2748                        # less crammed.
2749                        my $title = esc_html($ctags_lc{$ctag}->{topname});
2750                        $title =~ s/ /&nbsp;/g;
2751                        $title =~ s/^/&nbsp;/g;
2752                        $title =~ s/$/&nbsp;/g;
2753                        if (defined $matched && $matched eq $ctag) {
2754                                $title = qq(<span class="match">$title</span>);
2755                        }
2756                        $cloud->add($title, href(project=>undef, ctag=>$ctag),
2757                                    $ctags_lc{$ctag}->{count});
2758                }
2759        } else {
2760                $cloud = {};
2761                foreach my $ctag (keys %ctags_lc) {
2762                        my $title = esc_html($ctags_lc{$ctag}->{topname}, -nbsp=>1);
2763                        if (defined $matched && $matched eq $ctag) {
2764                                $title = qq(<span class="match">$title</span>);
2765                        }
2766                        $cloud->{$ctag}{count} = $ctags_lc{$ctag}->{count};
2767                        $cloud->{$ctag}{ctag} =
2768                                $cgi->a({-href=>href(project=>undef, ctag=>$ctag)}, $title);
2769                }
2770        }
2771        return $cloud;
2772}
2773
2774sub git_show_project_tagcloud {
2775        my ($cloud, $count) = @_;
2776        if (ref $cloud eq 'HTML::TagCloud') {
2777                return $cloud->html_and_css($count);
2778        } else {
2779                my @tags = sort { $cloud->{$a}->{'count'} <=> $cloud->{$b}->{'count'} } keys %$cloud;
2780                return
2781                        '<div id="htmltagcloud"'.($project ? '' : ' align="center"').'>' .
2782                        join (', ', map {
2783                                $cloud->{$_}->{'ctag'}
2784                        } splice(@tags, 0, $count)) .
2785                        '</div>';
2786        }
2787}
2788
2789sub git_get_project_url_list {
2790        my $path = shift;
2791
2792        $git_dir = "$projectroot/$path";
2793        open my $fd, '<', "$git_dir/cloneurl"
2794                or return wantarray ?
2795                @{ config_to_multi(git_get_project_config('url')) } :
2796                   config_to_multi(git_get_project_config('url'));
2797        my @git_project_url_list = map { chomp; $_ } <$fd>;
2798        close $fd;
2799
2800        return wantarray ? @git_project_url_list : \@git_project_url_list;
2801}
2802
2803sub git_get_projects_list {
2804        my $filter = shift || '';
2805        my @list;
2806
2807        $filter =~ s/\.git$//;
2808
2809        if (-d $projects_list) {
2810                # search in directory
2811                my $dir = $projects_list;
2812                # remove the trailing "/"
2813                $dir =~ s!/+$!!;
2814                my $pfxlen = length("$projects_list");
2815                my $pfxdepth = ($projects_list =~ tr!/!!);
2816                # when filtering, search only given subdirectory
2817                if ($filter) {
2818                        $dir .= "/$filter";
2819                        $dir =~ s!/+$!!;
2820                }
2821
2822                File::Find::find({
2823                        follow_fast => 1, # follow symbolic links
2824                        follow_skip => 2, # ignore duplicates
2825                        dangling_symlinks => 0, # ignore dangling symlinks, silently
2826                        wanted => sub {
2827                                # global variables
2828                                our $project_maxdepth;
2829                                our $projectroot;
2830                                # skip project-list toplevel, if we get it.
2831                                return if (m!^[/.]$!);
2832                                # only directories can be git repositories
2833                                return unless (-d $_);
2834                                # don't traverse too deep (Find is super slow on os x)
2835                                # $project_maxdepth excludes depth of $projectroot
2836                                if (($File::Find::name =~ tr!/!!) - $pfxdepth > $project_maxdepth) {
2837                                        $File::Find::prune = 1;
2838                                        return;
2839                                }
2840
2841                                my $path = substr($File::Find::name, $pfxlen + 1);
2842                                # we check related file in $projectroot
2843                                if (check_export_ok("$projectroot/$path")) {
2844                                        push @list, { path => $path };
2845                                        $File::Find::prune = 1;
2846                                }
2847                        },
2848                }, "$dir");
2849
2850        } elsif (-f $projects_list) {
2851                # read from file(url-encoded):
2852                # 'git%2Fgit.git Linus+Torvalds'
2853                # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
2854                # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
2855                open my $fd, '<', $projects_list or return;
2856        PROJECT:
2857                while (my $line = <$fd>) {
2858                        chomp $line;
2859                        my ($path, $owner) = split ' ', $line;
2860                        $path = unescape($path);
2861                        $owner = unescape($owner);
2862                        if (!defined $path) {
2863                                next;
2864                        }
2865                        # if $filter is rpovided, check if $path begins with $filter
2866                        if ($filter && $path !~ m!^\Q$filter\E/!) {
2867                                next;
2868                        }
2869                        if (check_export_ok("$projectroot/$path")) {
2870                                my $pr = {
2871                                        path => $path,
2872                                        owner => to_utf8($owner),
2873                                };
2874                                push @list, $pr;
2875                        }
2876                }
2877                close $fd;
2878        }
2879        return @list;
2880}
2881
2882# written with help of Tree::Trie module (Perl Artistic License, GPL compatibile)
2883# as side effects it sets 'forks' field to list of forks for forked projects
2884sub filter_forks_from_projects_list {
2885        my $projects = shift;
2886
2887        my %trie; # prefix tree of directories (path components)
2888        # generate trie out of those directories that might contain forks
2889        foreach my $pr (@$projects) {
2890                my $path = $pr->{'path'};
2891                $path =~ s/\.git$//;      # forks of 'repo.git' are in 'repo/' directory
2892                next if ($path =~ m!/$!); # skip non-bare repositories, e.g. 'repo/.git'
2893                next unless ($path);      # skip '.git' repository: tests, git-instaweb
2894                next unless (-d "$projectroot/$path"); # containing directory exists
2895                $pr->{'forks'} = [];      # there can be 0 or more forks of project
2896
2897                # add to trie
2898                my @dirs = split('/', $path);
2899                # walk the trie, until either runs out of components or out of trie
2900                my $ref = \%trie;
2901                while (scalar @dirs &&
2902                       exists($ref->{$dirs[0]})) {
2903                        $ref = $ref->{shift @dirs};
2904                }
2905                # create rest of trie structure from rest of components
2906                foreach my $dir (@dirs) {
2907                        $ref = $ref->{$dir} = {};
2908                }
2909                # create end marker, store $pr as a data
2910                $ref->{''} = $pr if (!exists $ref->{''});
2911        }
2912
2913        # filter out forks, by finding shortest prefix match for paths
2914        my @filtered;
2915 PROJECT:
2916        foreach my $pr (@$projects) {
2917                # trie lookup
2918                my $ref = \%trie;
2919        DIR:
2920                foreach my $dir (split('/', $pr->{'path'})) {
2921                        if (exists $ref->{''}) {
2922                                # found [shortest] prefix, is a fork - skip it
2923                                push @{$ref->{''}{'forks'}}, $pr;
2924                                next PROJECT;
2925                        }
2926                        if (!exists $ref->{$dir}) {
2927                                # not in trie, cannot have prefix, not a fork
2928                                push @filtered, $pr;
2929                                next PROJECT;
2930                        }
2931                        # If the dir is there, we just walk one step down the trie.
2932                        $ref = $ref->{$dir};
2933                }
2934                # we ran out of trie
2935                # (shouldn't happen: it's either no match, or end marker)
2936                push @filtered, $pr;
2937        }
2938
2939        return @filtered;
2940}
2941
2942# note: fill_project_list_info must be run first,
2943# for 'descr_long' and 'ctags' to be filled
2944sub search_projects_list {
2945        my ($projlist, %opts) = @_;
2946        my $tagfilter  = $opts{'tagfilter'};
2947        my $searchtext = $opts{'searchtext'};
2948
2949        return @$projlist
2950                unless ($tagfilter || $searchtext);
2951
2952        my @projects;
2953 PROJECT:
2954        foreach my $pr (@$projlist) {
2955
2956                if ($tagfilter) {
2957                        next unless ref($pr->{'ctags'}) eq 'HASH';
2958                        next unless
2959                                grep { lc($_) eq lc($tagfilter) } keys %{$pr->{'ctags'}};
2960                }
2961
2962                if ($searchtext) {
2963                        next unless
2964                                $pr->{'path'} =~ /$searchtext/ ||
2965                                $pr->{'descr_long'} =~ /$searchtext/;
2966                }
2967
2968                push @projects, $pr;
2969        }
2970
2971        return @projects;
2972}
2973
2974our $gitweb_project_owner = undef;
2975sub git_get_project_list_from_file {
2976
2977        return if (defined $gitweb_project_owner);
2978
2979        $gitweb_project_owner = {};
2980        # read from file (url-encoded):
2981        # 'git%2Fgit.git Linus+Torvalds'
2982        # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
2983        # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
2984        if (-f $projects_list) {
2985                open(my $fd, '<', $projects_list);
2986                while (my $line = <$fd>) {
2987                        chomp $line;
2988                        my ($pr, $ow) = split ' ', $line;
2989                        $pr = unescape($pr);
2990                        $ow = unescape($ow);
2991                        $gitweb_project_owner->{$pr} = to_utf8($ow);
2992                }
2993                close $fd;
2994        }
2995}
2996
2997sub git_get_project_owner {
2998        my $project = shift;
2999        my $owner;
3000
3001        return undef unless $project;
3002        $git_dir = "$projectroot/$project";
3003
3004        if (!defined $gitweb_project_owner) {
3005                git_get_project_list_from_file();
3006        }
3007
3008        if (exists $gitweb_project_owner->{$project}) {
3009                $owner = $gitweb_project_owner->{$project};
3010        }
3011        if (!defined $owner){
3012                $owner = git_get_project_config('owner');
3013        }
3014        if (!defined $owner) {
3015                $owner = get_file_owner("$git_dir");
3016        }
3017
3018        return $owner;
3019}
3020
3021sub git_get_last_activity {
3022        my ($path) = @_;
3023        my $fd;
3024
3025        $git_dir = "$projectroot/$path";
3026        open($fd, "-|", git_cmd(), 'for-each-ref',
3027             '--format=%(committer)',
3028             '--sort=-committerdate',
3029             '--count=1',
3030             'refs/heads') or return;
3031        my $most_recent = <$fd>;
3032        close $fd or return;
3033        if (defined $most_recent &&
3034            $most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
3035                my $timestamp = $1;
3036                my $age = time - $timestamp;
3037                return ($age, age_string($age));
3038        }
3039        return (undef, undef);
3040}
3041
3042# Implementation note: when a single remote is wanted, we cannot use 'git
3043# remote show -n' because that command always work (assuming it's a remote URL
3044# if it's not defined), and we cannot use 'git remote show' because that would
3045# try to make a network roundtrip. So the only way to find if that particular
3046# remote is defined is to walk the list provided by 'git remote -v' and stop if
3047# and when we find what we want.
3048sub git_get_remotes_list {
3049        my $wanted = shift;
3050        my %remotes = ();
3051
3052        open my $fd, '-|' , git_cmd(), 'remote', '-v';
3053        return unless $fd;
3054        while (my $remote = <$fd>) {
3055                chomp $remote;
3056                $remote =~ s!\t(.*?)\s+\((\w+)\)$!!;
3057                next if $wanted and not $remote eq $wanted;
3058                my ($url, $key) = ($1, $2);
3059
3060                $remotes{$remote} ||= { 'heads' => () };
3061                $remotes{$remote}{$key} = $url;
3062        }
3063        close $fd or return;
3064        return wantarray ? %remotes : \%remotes;
3065}
3066
3067# Takes a hash of remotes as first parameter and fills it by adding the
3068# available remote heads for each of the indicated remotes.
3069sub fill_remote_heads {
3070        my $remotes = shift;
3071        my @heads = map { "remotes/$_" } keys %$remotes;
3072        my @remoteheads = git_get_heads_list(undef, @heads);
3073        foreach my $remote (keys %$remotes) {
3074                $remotes->{$remote}{'heads'} = [ grep {
3075                        $_->{'name'} =~ s!^$remote/!!
3076                        } @remoteheads ];
3077        }
3078}
3079
3080sub git_get_references {
3081        my $type = shift || "";
3082        my %refs;
3083        # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
3084        # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
3085        open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
3086                ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
3087                or return;
3088
3089        while (my $line = <$fd>) {
3090                chomp $line;
3091                if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type.*)$!) {
3092                        if (defined $refs{$1}) {
3093                                push @{$refs{$1}}, $2;
3094                        } else {
3095                                $refs{$1} = [ $2 ];
3096                        }
3097                }
3098        }
3099        close $fd or return;
3100        return \%refs;
3101}
3102
3103sub git_get_rev_name_tags {
3104        my $hash = shift || return undef;
3105
3106        open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
3107                or return;
3108        my $name_rev = <$fd>;
3109        close $fd;
3110
3111        if ($name_rev =~ m|^$hash tags/(.*)$|) {
3112                return $1;
3113        } else {
3114                # catches also '$hash undefined' output
3115                return undef;
3116        }
3117}
3118
3119## ----------------------------------------------------------------------
3120## parse to hash functions
3121
3122sub parse_date {
3123        my $epoch = shift;
3124        my $tz = shift || "-0000";
3125
3126        my %date;
3127        my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
3128        my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
3129        my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
3130        $date{'hour'} = $hour;
3131        $date{'minute'} = $min;
3132        $date{'mday'} = $mday;
3133        $date{'day'} = $days[$wday];
3134        $date{'month'} = $months[$mon];
3135        $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
3136                             $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
3137        $date{'mday-time'} = sprintf "%d %s %02d:%02d",
3138                             $mday, $months[$mon], $hour ,$min;
3139        $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
3140                             1900+$year, 1+$mon, $mday, $hour ,$min, $sec;
3141
3142        my ($tz_sign, $tz_hour, $tz_min) =
3143                ($tz =~ m/^([-+])(\d\d)(\d\d)$/);
3144        $tz_sign = ($tz_sign eq '-' ? -1 : +1);
3145        my $local = $epoch + $tz_sign*((($tz_hour*60) + $tz_min)*60);
3146        ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
3147        $date{'hour_local'} = $hour;
3148        $date{'minute_local'} = $min;
3149        $date{'tz_local'} = $tz;
3150        $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
3151                                  1900+$year, $mon+1, $mday,
3152                                  $hour, $min, $sec, $tz);
3153        return %date;
3154}
3155
3156sub parse_tag {
3157        my $tag_id = shift;
3158        my %tag;
3159        my @comment;
3160
3161        open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
3162        $tag{'id'} = $tag_id;
3163        while (my $line = <$fd>) {
3164                chomp $line;
3165                if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
3166                        $tag{'object'} = $1;
3167                } elsif ($line =~ m/^type (.+)$/) {
3168                        $tag{'type'} = $1;
3169                } elsif ($line =~ m/^tag (.+)$/) {
3170                        $tag{'name'} = $1;
3171                } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
3172                        $tag{'author'} = $1;
3173                        $tag{'author_epoch'} = $2;
3174                        $tag{'author_tz'} = $3;
3175                        if ($tag{'author'} =~ m/^([^<]+) <([^>]*)>/) {
3176                                $tag{'author_name'}  = $1;
3177                                $tag{'author_email'} = $2;
3178                        } else {
3179                                $tag{'author_name'} = $tag{'author'};
3180                        }
3181                } elsif ($line =~ m/--BEGIN/) {
3182                        push @comment, $line;
3183                        last;
3184                } elsif ($line eq "") {
3185                        last;
3186                }
3187        }
3188        push @comment, <$fd>;
3189        $tag{'comment'} = \@comment;
3190        close $fd or return;
3191        if (!defined $tag{'name'}) {
3192                return
3193        };
3194        return %tag
3195}
3196
3197sub parse_commit_text {
3198        my ($commit_text, $withparents) = @_;
3199        my @commit_lines = split '\n', $commit_text;
3200        my %co;
3201
3202        pop @commit_lines; # Remove '\0'
3203
3204        if (! @commit_lines) {
3205                return;
3206        }
3207
3208        my $header = shift @commit_lines;
3209        if ($header !~ m/^[0-9a-fA-F]{40}/) {
3210                return;
3211        }
3212        ($co{'id'}, my @parents) = split ' ', $header;
3213        while (my $line = shift @commit_lines) {
3214                last if $line eq "\n";
3215                if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
3216                        $co{'tree'} = $1;
3217                } elsif ((!defined $withparents) && ($line =~ m/^parent ([0-9a-fA-F]{40})$/)) {
3218                        push @parents, $1;
3219                } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
3220                        $co{'author'} = to_utf8($1);
3221                        $co{'author_epoch'} = $2;
3222                        $co{'author_tz'} = $3;
3223                        if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
3224                                $co{'author_name'}  = $1;
3225                                $co{'author_email'} = $2;
3226                        } else {
3227                                $co{'author_name'} = $co{'author'};
3228                        }
3229                } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
3230                        $co{'committer'} = to_utf8($1);
3231                        $co{'committer_epoch'} = $2;
3232                        $co{'committer_tz'} = $3;
3233                        if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
3234                                $co{'committer_name'}  = $1;
3235                                $co{'committer_email'} = $2;
3236                        } else {
3237                                $co{'committer_name'} = $co{'committer'};
3238                        }
3239                }
3240        }
3241        if (!defined $co{'tree'}) {
3242                return;
3243        };
3244        $co{'parents'} = \@parents;
3245        $co{'parent'} = $parents[0];
3246
3247        foreach my $title (@commit_lines) {
3248                $title =~ s/^    //;
3249                if ($title ne "") {
3250                        $co{'title'} = chop_str($title, 80, 5);
3251                        # remove leading stuff of merges to make the interesting part visible
3252                        if (length($title) > 50) {
3253                                $title =~ s/^Automatic //;
3254                                $title =~ s/^merge (of|with) /Merge ... /i;
3255                                if (length($title) > 50) {
3256                                        $title =~ s/(http|rsync):\/\///;
3257                                }
3258                                if (length($title) > 50) {
3259                                        $title =~ s/(master|www|rsync)\.//;
3260                                }
3261                                if (length($title) > 50) {
3262                                        $title =~ s/kernel.org:?//;
3263                                }
3264                                if (length($title) > 50) {
3265                                        $title =~ s/\/pub\/scm//;
3266                                }
3267                        }
3268                        $co{'title_short'} = chop_str($title, 50, 5);
3269                        last;
3270                }
3271        }
3272        if (! defined $co{'title'} || $co{'title'} eq "") {
3273                $co{'title'} = $co{'title_short'} = '(no commit message)';
3274        }
3275        # remove added spaces
3276        foreach my $line (@commit_lines) {
3277                $line =~ s/^    //;
3278        }
3279        $co{'comment'} = \@commit_lines;
3280
3281        my $age = time - $co{'committer_epoch'};
3282        $co{'age'} = $age;
3283        $co{'age_string'} = age_string($age);
3284        my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
3285        if ($age > 60*60*24*7*2) {
3286                $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
3287                $co{'age_string_age'} = $co{'age_string'};
3288        } else {
3289                $co{'age_string_date'} = $co{'age_string'};
3290                $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
3291        }
3292        return %co;
3293}
3294
3295sub parse_commit {
3296        my ($commit_id) = @_;
3297        my %co;
3298
3299        local $/ = "\0";
3300
3301        open my $fd, "-|", git_cmd(), "rev-list",
3302                "--parents",
3303                "--header",
3304                "--max-count=1",
3305                $commit_id,
3306                "--",
3307                or die_error(500, "Open git-rev-list failed");
3308        %co = parse_commit_text(<$fd>, 1);
3309        close $fd;
3310
3311        return %co;
3312}
3313
3314sub parse_commits {
3315        my ($commit_id, $maxcount, $skip, $filename, @args) = @_;
3316        my @cos;
3317
3318        $maxcount ||= 1;
3319        $skip ||= 0;
3320
3321        local $/ = "\0";
3322
3323        open my $fd, "-|", git_cmd(), "rev-list",
3324                "--header",
3325                @args,
3326                ("--max-count=" . $maxcount),
3327                ("--skip=" . $skip),
3328                @extra_options,
3329                $commit_id,
3330                "--",
3331                ($filename ? ($filename) : ())
3332                or die_error(500, "Open git-rev-list failed");
3333        while (my $line = <$fd>) {
3334                my %co = parse_commit_text($line);
3335                push @cos, \%co;
3336        }
3337        close $fd;
3338
3339        return wantarray ? @cos : \@cos;
3340}
3341
3342# parse line of git-diff-tree "raw" output
3343sub parse_difftree_raw_line {
3344        my $line = shift;
3345        my %res;
3346
3347        # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
3348        # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
3349        if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
3350                $res{'from_mode'} = $1;
3351                $res{'to_mode'} = $2;
3352                $res{'from_id'} = $3;
3353                $res{'to_id'} = $4;
3354                $res{'status'} = $5;
3355                $res{'similarity'} = $6;
3356                if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
3357                        ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
3358                } else {
3359                        $res{'from_file'} = $res{'to_file'} = $res{'file'} = unquote($7);
3360                }
3361        }
3362        # '::100755 100755 100755 60e79ca1b01bc8b057abe17ddab484699a7f5fdb 94067cc5f73388f33722d52ae02f44692bc07490 94067cc5f73388f33722d52ae02f44692bc07490 MR git-gui/git-gui.sh'
3363        # combined diff (for merge commit)
3364        elsif ($line =~ s/^(::+)((?:[0-7]{6} )+)((?:[0-9a-fA-F]{40} )+)([a-zA-Z]+)\t(.*)$//) {
3365                $res{'nparents'}  = length($1);
3366                $res{'from_mode'} = [ split(' ', $2) ];
3367                $res{'to_mode'} = pop @{$res{'from_mode'}};
3368                $res{'from_id'} = [ split(' ', $3) ];
3369                $res{'to_id'} = pop @{$res{'from_id'}};
3370                $res{'status'} = [ split('', $4) ];
3371                $res{'to_file'} = unquote($5);
3372        }
3373        # 'c512b523472485aef4fff9e57b229d9d243c967f'
3374        elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
3375                $res{'commit'} = $1;
3376        }
3377
3378        return wantarray ? %res : \%res;
3379}
3380
3381# wrapper: return parsed line of git-diff-tree "raw" output
3382# (the argument might be raw line, or parsed info)
3383sub parsed_difftree_line {
3384        my $line_or_ref = shift;
3385
3386        if (ref($line_or_ref) eq "HASH") {
3387                # pre-parsed (or generated by hand)
3388                return $line_or_ref;
3389        } else {
3390                return parse_difftree_raw_line($line_or_ref);
3391        }
3392}
3393
3394# parse line of git-ls-tree output
3395sub parse_ls_tree_line {
3396        my $line = shift;
3397        my %opts = @_;
3398        my %res;
3399
3400        if ($opts{'-l'}) {
3401                #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa   16717  panic.c'
3402                $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40}) +(-|[0-9]+)\t(.+)$/s;
3403
3404                $res{'mode'} = $1;
3405                $res{'type'} = $2;
3406                $res{'hash'} = $3;
3407                $res{'size'} = $4;
3408                if ($opts{'-z'}) {
3409                        $res{'name'} = $5;
3410                } else {
3411                        $res{'name'} = unquote($5);
3412                }
3413        } else {
3414                #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
3415                $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
3416
3417                $res{'mode'} = $1;
3418                $res{'type'} = $2;
3419                $res{'hash'} = $3;
3420                if ($opts{'-z'}) {
3421                        $res{'name'} = $4;
3422                } else {
3423                        $res{'name'} = unquote($4);
3424                }
3425        }
3426
3427        return wantarray ? %res : \%res;
3428}
3429
3430# generates _two_ hashes, references to which are passed as 2 and 3 argument
3431sub parse_from_to_diffinfo {
3432        my ($diffinfo, $from, $to, @parents) = @_;
3433
3434        if ($diffinfo->{'nparents'}) {
3435                # combined diff
3436                $from->{'file'} = [];
3437                $from->{'href'} = [];
3438                fill_from_file_info($diffinfo, @parents)
3439                        unless exists $diffinfo->{'from_file'};
3440                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
3441                        $from->{'file'}[$i] =
3442                                defined $diffinfo->{'from_file'}[$i] ?
3443                                        $diffinfo->{'from_file'}[$i] :
3444                                        $diffinfo->{'to_file'};
3445                        if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
3446                                $from->{'href'}[$i] = href(action=>"blob",
3447                                                           hash_base=>$parents[$i],
3448                                                           hash=>$diffinfo->{'from_id'}[$i],
3449                                                           file_name=>$from->{'file'}[$i]);
3450                        } else {
3451                                $from->{'href'}[$i] = undef;
3452                        }
3453                }
3454        } else {
3455                # ordinary (not combined) diff
3456                $from->{'file'} = $diffinfo->{'from_file'};
3457                if ($diffinfo->{'status'} ne "A") { # not new (added) file
3458                        $from->{'href'} = href(action=>"blob", hash_base=>$hash_parent,
3459                                               hash=>$diffinfo->{'from_id'},
3460                                               file_name=>$from->{'file'});
3461                } else {
3462                        delete $from->{'href'};
3463                }
3464        }
3465
3466        $to->{'file'} = $diffinfo->{'to_file'};
3467        if (!is_deleted($diffinfo)) { # file exists in result
3468                $to->{'href'} = href(action=>"blob", hash_base=>$hash,
3469                                     hash=>$diffinfo->{'to_id'},
3470                                     file_name=>$to->{'file'});
3471        } else {
3472                delete $to->{'href'};
3473        }
3474}
3475
3476## ......................................................................
3477## parse to array of hashes functions
3478
3479sub git_get_heads_list {
3480        my ($limit, @classes) = @_;
3481        @classes = ('heads') unless @classes;
3482        my @patterns = map { "refs/$_" } @classes;
3483        my @headslist;
3484
3485        open my $fd, '-|', git_cmd(), 'for-each-ref',
3486                ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
3487                '--format=%(objectname) %(refname) %(subject)%00%(committer)',
3488                @patterns
3489                or return;
3490        while (my $line = <$fd>) {
3491                my %ref_item;
3492
3493                chomp $line;
3494                my ($refinfo, $committerinfo) = split(/\0/, $line);
3495                my ($hash, $name, $title) = split(' ', $refinfo, 3);
3496                my ($committer, $epoch, $tz) =
3497                        ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
3498                $ref_item{'fullname'}  = $name;
3499                $name =~ s!^refs/(?:head|remote)s/!!;
3500
3501                $ref_item{'name'}  = $name;
3502                $ref_item{'id'}    = $hash;
3503                $ref_item{'title'} = $title || '(no commit message)';
3504                $ref_item{'epoch'} = $epoch;
3505                if ($epoch) {
3506                        $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
3507                } else {
3508                        $ref_item{'age'} = "unknown";
3509                }
3510
3511                push @headslist, \%ref_item;
3512        }
3513        close $fd;
3514
3515        return wantarray ? @headslist : \@headslist;
3516}
3517
3518sub git_get_tags_list {
3519        my $limit = shift;
3520        my @tagslist;
3521
3522        open my $fd, '-|', git_cmd(), 'for-each-ref',
3523                ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
3524                '--format=%(objectname) %(objecttype) %(refname) '.
3525                '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
3526                'refs/tags'
3527                or return;
3528        while (my $line = <$fd>) {
3529                my %ref_item;
3530
3531                chomp $line;
3532                my ($refinfo, $creatorinfo) = split(/\0/, $line);
3533                my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
3534                my ($creator, $epoch, $tz) =
3535                        ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
3536                $ref_item{'fullname'} = $name;
3537                $name =~ s!^refs/tags/!!;
3538
3539                $ref_item{'type'} = $type;
3540                $ref_item{'id'} = $id;
3541                $ref_item{'name'} = $name;
3542                if ($type eq "tag") {
3543                        $ref_item{'subject'} = $title;
3544                        $ref_item{'reftype'} = $reftype;
3545                        $ref_item{'refid'}   = $refid;
3546                } else {
3547                        $ref_item{'reftype'} = $type;
3548                        $ref_item{'refid'}   = $id;
3549                }
3550
3551                if ($type eq "tag" || $type eq "commit") {
3552                        $ref_item{'epoch'} = $epoch;
3553                        if ($epoch) {
3554                                $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
3555                        } else {
3556                                $ref_item{'age'} = "unknown";
3557                        }
3558                }
3559
3560                push @tagslist, \%ref_item;
3561        }
3562        close $fd;
3563
3564        return wantarray ? @tagslist : \@tagslist;
3565}
3566
3567## ----------------------------------------------------------------------
3568## filesystem-related functions
3569
3570sub get_file_owner {
3571        my $path = shift;
3572
3573        my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
3574        my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
3575        if (!defined $gcos) {
3576                return undef;
3577        }
3578        my $owner = $gcos;
3579        $owner =~ s/[,;].*$//;
3580        return to_utf8($owner);
3581}
3582
3583# assume that file exists
3584sub insert_file {
3585        my $filename = shift;
3586
3587        open my $fd, '<', $filename;
3588        print map { to_utf8($_) } <$fd>;
3589        close $fd;
3590}
3591
3592## ......................................................................
3593## mimetype related functions
3594
3595sub mimetype_guess_file {
3596        my $filename = shift;
3597        my $mimemap = shift;
3598        -r $mimemap or return undef;
3599
3600        my %mimemap;
3601        open(my $mh, '<', $mimemap) or return undef;
3602        while (<$mh>) {
3603                next if m/^#/; # skip comments
3604                my ($mimetype, @exts) = split(/\s+/);
3605                foreach my $ext (@exts) {
3606                        $mimemap{$ext} = $mimetype;
3607                }
3608        }
3609        close($mh);
3610
3611        $filename =~ /\.([^.]*)$/;
3612        return $mimemap{$1};
3613}
3614
3615sub mimetype_guess {
3616        my $filename = shift;
3617        my $mime;
3618        $filename =~ /\./ or return undef;
3619
3620        if ($mimetypes_file) {
3621                my $file = $mimetypes_file;
3622                if ($file !~ m!^/!) { # if it is relative path
3623                        # it is relative to project
3624                        $file = "$projectroot/$project/$file";
3625                }
3626                $mime = mimetype_guess_file($filename, $file);
3627        }
3628        $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
3629        return $mime;
3630}
3631
3632sub blob_mimetype {
3633        my $fd = shift;
3634        my $filename = shift;
3635
3636        if ($filename) {
3637                my $mime = mimetype_guess($filename);
3638                $mime and return $mime;
3639        }
3640
3641        # just in case
3642        return $default_blob_plain_mimetype unless $fd;
3643
3644        if (-T $fd) {
3645                return 'text/plain';
3646        } elsif (! $filename) {
3647                return 'application/octet-stream';
3648        } elsif ($filename =~ m/\.png$/i) {
3649                return 'image/png';
3650        } elsif ($filename =~ m/\.gif$/i) {
3651                return 'image/gif';
3652        } elsif ($filename =~ m/\.jpe?g$/i) {
3653                return 'image/jpeg';
3654        } else {
3655                return 'application/octet-stream';
3656        }
3657}
3658
3659sub blob_contenttype {
3660        my ($fd, $file_name, $type) = @_;
3661
3662        $type ||= blob_mimetype($fd, $file_name);
3663        if ($type eq 'text/plain' && defined $default_text_plain_charset) {
3664                $type .= "; charset=$default_text_plain_charset";
3665        }
3666
3667        return $type;
3668}
3669
3670# guess file syntax for syntax highlighting; return undef if no highlighting
3671# the name of syntax can (in the future) depend on syntax highlighter used
3672sub guess_file_syntax {
3673        my ($highlight, $mimetype, $file_name) = @_;
3674        return undef unless ($highlight && defined $file_name);
3675        my $basename = basename($file_name, '.in');
3676        return $highlight_basename{$basename}
3677                if exists $highlight_basename{$basename};
3678
3679        $basename =~ /\.([^.]*)$/;
3680        my $ext = $1 or return undef;
3681        return $highlight_ext{$ext}
3682                if exists $highlight_ext{$ext};
3683
3684        return undef;
3685}
3686
3687# run highlighter and return FD of its output,
3688# or return original FD if no highlighting
3689sub run_highlighter {
3690        my ($fd, $highlight, $syntax) = @_;
3691        return $fd unless ($highlight && defined $syntax);
3692
3693        close $fd;
3694        open $fd, quote_command(git_cmd(), "cat-file", "blob", $hash)." | ".
3695                  quote_command($highlight_bin).
3696                  " --replace-tabs=8 --fragment --syntax $syntax |"
3697                or die_error(500, "Couldn't open file or run syntax highlighter");
3698        return $fd;
3699}
3700
3701## ======================================================================
3702## functions printing HTML: header, footer, error page
3703
3704sub get_page_title {
3705        my $title = to_utf8($site_name);
3706
3707        return $title unless (defined $project);
3708        $title .= " - " . to_utf8($project);
3709
3710        return $title unless (defined $action);
3711        $title .= "/$action"; # $action is US-ASCII (7bit ASCII)
3712
3713        return $title unless (defined $file_name);
3714        $title .= " - " . esc_path($file_name);
3715        if ($action eq "tree" && $file_name !~ m|/$|) {
3716                $title .= "/";
3717        }
3718
3719        return $title;
3720}
3721
3722sub get_content_type_html {
3723        # require explicit support from the UA if we are to send the page as
3724        # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
3725        # we have to do this because MSIE sometimes globs '*/*', pretending to
3726        # support xhtml+xml but choking when it gets what it asked for.
3727        if (defined $cgi->http('HTTP_ACCEPT') &&
3728            $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
3729            $cgi->Accept('application/xhtml+xml') != 0) {
3730                return 'application/xhtml+xml';
3731        } else {
3732                return 'text/html';
3733        }
3734}
3735
3736sub print_feed_meta {
3737        if (defined $project) {
3738                my %href_params = get_feed_info();
3739                if (!exists $href_params{'-title'}) {
3740                        $href_params{'-title'} = 'log';
3741                }
3742
3743                foreach my $format (qw(RSS Atom)) {
3744                        my $type = lc($format);
3745                        my %link_attr = (
3746                                '-rel' => 'alternate',
3747                                '-title' => esc_attr("$project - $href_params{'-title'} - $format feed"),
3748                                '-type' => "application/$type+xml"
3749                        );
3750
3751                        $href_params{'action'} = $type;
3752                        $link_attr{'-href'} = href(%href_params);
3753                        print "<link ".
3754                              "rel=\"$link_attr{'-rel'}\" ".
3755                              "title=\"$link_attr{'-title'}\" ".
3756                              "href=\"$link_attr{'-href'}\" ".
3757                              "type=\"$link_attr{'-type'}\" ".
3758                              "/>\n";
3759
3760                        $href_params{'extra_options'} = '--no-merges';
3761                        $link_attr{'-href'} = href(%href_params);
3762                        $link_attr{'-title'} .= ' (no merges)';
3763                        print "<link ".
3764                              "rel=\"$link_attr{'-rel'}\" ".
3765                              "title=\"$link_attr{'-title'}\" ".
3766                              "href=\"$link_attr{'-href'}\" ".
3767                              "type=\"$link_attr{'-type'}\" ".
3768                              "/>\n";
3769                }
3770
3771        } else {
3772                printf('<link rel="alternate" title="%s projects list" '.
3773                       'href="%s" type="text/plain; charset=utf-8" />'."\n",
3774                       esc_attr($site_name), href(project=>undef, action=>"project_index"));
3775                printf('<link rel="alternate" title="%s projects feeds" '.
3776                       'href="%s" type="text/x-opml" />'."\n",
3777                       esc_attr($site_name), href(project=>undef, action=>"opml"));
3778        }
3779}
3780
3781sub print_header_links {
3782        my $status = shift;
3783
3784        # print out each stylesheet that exist, providing backwards capability
3785        # for those people who defined $stylesheet in a config file
3786        if (defined $stylesheet) {
3787                print '<link rel="stylesheet" type="text/css" href="'.esc_url($stylesheet).'"/>'."\n";
3788        } else {
3789                foreach my $stylesheet (@stylesheets) {
3790                        next unless $stylesheet;
3791                        print '<link rel="stylesheet" type="text/css" href="'.esc_url($stylesheet).'"/>'."\n";
3792                }
3793        }
3794        print_feed_meta()
3795                if ($status eq '200 OK');
3796        if (defined $favicon) {
3797                print qq(<link rel="shortcut icon" href=").esc_url($favicon).qq(" type="image/png" />\n);
3798        }
3799}
3800
3801sub print_nav_breadcrumbs {
3802        my %opts = @_;
3803
3804        print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
3805        if (defined $project) {
3806                print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
3807                if (defined $action) {
3808                        my $action_print = $action ;
3809                        if (defined $opts{-action_extra}) {
3810                                $action_print = $cgi->a({-href => href(action=>$action)},
3811                                        $action);
3812                        }
3813                        print " / $action_print";
3814                }
3815                if (defined $opts{-action_extra}) {
3816                        print " / $opts{-action_extra}";
3817                }
3818                print "\n";
3819        }
3820}
3821
3822sub print_search_form {
3823        if (!defined $searchtext) {
3824                $searchtext = "";
3825        }
3826        my $search_hash;
3827        if (defined $hash_base) {
3828                $search_hash = $hash_base;
3829        } elsif (defined $hash) {
3830                $search_hash = $hash;
3831        } else {
3832                $search_hash = "HEAD";
3833        }
3834        my $action = $my_uri;
3835        my $use_pathinfo = gitweb_check_feature('pathinfo');
3836        if ($use_pathinfo) {
3837                $action .= "/".esc_url($project);
3838        }
3839        print $cgi->startform(-method => "get", -action => $action) .
3840              "<div class=\"search\">\n" .
3841              (!$use_pathinfo &&
3842              $cgi->input({-name=>"p", -value=>$project, -type=>"hidden"}) . "\n") .
3843              $cgi->input({-name=>"a", -value=>"search", -type=>"hidden"}) . "\n" .
3844              $cgi->input({-name=>"h", -value=>$search_hash, -type=>"hidden"}) . "\n" .
3845              $cgi->popup_menu(-name => 'st', -default => 'commit',
3846                               -values => ['commit', 'grep', 'author', 'committer', 'pickaxe']) .
3847              $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
3848              " search:\n",
3849              $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
3850              "<span title=\"Extended regular expression\">" .
3851              $cgi->checkbox(-name => 'sr', -value => 1, -label => 're',
3852                             -checked => $search_use_regexp) .
3853              "</span>" .
3854              "</div>" .
3855              $cgi->end_form() . "\n";
3856}
3857
3858sub git_header_html {
3859        my $status = shift || "200 OK";
3860        my $expires = shift;
3861        my %opts = @_;
3862
3863        my $title = get_page_title();
3864        my $content_type = get_content_type_html();
3865        print $cgi->header(-type=>$content_type, -charset => 'utf-8',
3866                           -status=> $status, -expires => $expires)
3867                unless ($opts{'-no_http_header'});
3868        my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
3869        print <<EOF;
3870<?xml version="1.0" encoding="utf-8"?>
3871<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
3872<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
3873<!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
3874<!-- git core binaries version $git_version -->
3875<head>
3876<meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
3877<meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
3878<meta name="robots" content="index, nofollow"/>
3879<title>$title</title>
3880EOF
3881        # the stylesheet, favicon etc urls won't work correctly with path_info
3882        # unless we set the appropriate base URL
3883        if ($ENV{'PATH_INFO'}) {
3884                print "<base href=\"".esc_url($base_url)."\" />\n";
3885        }
3886        print_header_links($status);
3887
3888        if (defined $site_html_head_string) {
3889                print to_utf8($site_html_head_string);
3890        }
3891
3892        print "</head>\n" .
3893              "<body>\n";
3894
3895        if (defined $site_header && -f $site_header) {
3896                insert_file($site_header);
3897        }
3898
3899        print "<div class=\"page_header\">\n";
3900        if (defined $logo) {
3901                print $cgi->a({-href => esc_url($logo_url),
3902                               -title => $logo_label},
3903                              $cgi->img({-src => esc_url($logo),
3904                                         -width => 72, -height => 27,
3905                                         -alt => "git",
3906                                         -class => "logo"}));
3907        }
3908        print_nav_breadcrumbs(%opts);
3909        print "</div>\n";
3910
3911        my $have_search = gitweb_check_feature('search');
3912        if (defined $project && $have_search) {
3913                print_search_form();
3914        }
3915}
3916
3917sub git_footer_html {
3918        my $feed_class = 'rss_logo';
3919
3920        print "<div class=\"page_footer\">\n";
3921        if (defined $project) {
3922                my $descr = git_get_project_description($project);
3923                if (defined $descr) {
3924                        print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
3925                }
3926
3927                my %href_params = get_feed_info();
3928                if (!%href_params) {
3929                        $feed_class .= ' generic';
3930                }
3931                $href_params{'-title'} ||= 'log';
3932
3933                foreach my $format (qw(RSS Atom)) {
3934                        $href_params{'action'} = lc($format);
3935                        print $cgi->a({-href => href(%href_params),
3936                                      -title => "$href_params{'-title'} $format feed",
3937                                      -class => $feed_class}, $format)."\n";
3938                }
3939
3940        } else {
3941                print $cgi->a({-href => href(project=>undef, action=>"opml"),
3942                              -class => $feed_class}, "OPML") . " ";
3943                print $cgi->a({-href => href(project=>undef, action=>"project_index"),
3944                              -class => $feed_class}, "TXT") . "\n";
3945        }
3946        print "</div>\n"; # class="page_footer"
3947
3948        if (defined $t0 && gitweb_check_feature('timed')) {
3949                print "<div id=\"generating_info\">\n";
3950                print 'This page took '.
3951                      '<span id="generating_time" class="time_span">'.
3952                      tv_interval($t0, [ gettimeofday() ]).
3953                      ' seconds </span>'.
3954                      ' and '.
3955                      '<span id="generating_cmd">'.
3956                      $number_of_git_cmds.
3957                      '</span> git commands '.
3958                      " to generate.\n";
3959                print "</div>\n"; # class="page_footer"
3960        }
3961
3962        if (defined $site_footer && -f $site_footer) {
3963                insert_file($site_footer);
3964        }
3965
3966        print qq!<script type="text/javascript" src="!.esc_url($javascript).qq!"></script>\n!;
3967        if (defined $action &&
3968            $action eq 'blame_incremental') {
3969                print qq!<script type="text/javascript">\n!.
3970                      qq!startBlame("!. href(action=>"blame_data", -replay=>1) .qq!",\n!.
3971                      qq!           "!. href() .qq!");\n!.
3972                      qq!</script>\n!;
3973        } else {
3974                my ($jstimezone, $tz_cookie, $datetime_class) =
3975                        gitweb_get_feature('javascript-timezone');
3976
3977                print qq!<script type="text/javascript">\n!.
3978                      qq!window.onload = function () {\n!;
3979                if (gitweb_check_feature('javascript-actions')) {
3980                        print qq!       fixLinks();\n!;
3981                }
3982                if ($jstimezone && $tz_cookie && $datetime_class) {
3983                        print qq!       var tz_cookie = { name: '$tz_cookie', expires: 14, path: '/' };\n!. # in days
3984                              qq!       onloadTZSetup('$jstimezone', tz_cookie, '$datetime_class');\n!;
3985                }
3986                print qq!};\n!.
3987                      qq!</script>\n!;
3988        }
3989
3990        print "</body>\n" .
3991              "</html>";
3992}
3993
3994# die_error(<http_status_code>, <error_message>[, <detailed_html_description>])
3995# Example: die_error(404, 'Hash not found')
3996# By convention, use the following status codes (as defined in RFC 2616):
3997# 400: Invalid or missing CGI parameters, or
3998#      requested object exists but has wrong type.
3999# 403: Requested feature (like "pickaxe" or "snapshot") not enabled on
4000#      this server or project.
4001# 404: Requested object/revision/project doesn't exist.
4002# 500: The server isn't configured properly, or
4003#      an internal error occurred (e.g. failed assertions caused by bugs), or
4004#      an unknown error occurred (e.g. the git binary died unexpectedly).
4005# 503: The server is currently unavailable (because it is overloaded,
4006#      or down for maintenance).  Generally, this is a temporary state.
4007sub die_error {
4008        my $status = shift || 500;
4009        my $error = esc_html(shift) || "Internal Server Error";
4010        my $extra = shift;
4011        my %opts = @_;
4012
4013        my %http_responses = (
4014                400 => '400 Bad Request',
4015                403 => '403 Forbidden',
4016                404 => '404 Not Found',
4017                500 => '500 Internal Server Error',
4018                503 => '503 Service Unavailable',
4019        );
4020        git_header_html($http_responses{$status}, undef, %opts);
4021        print <<EOF;
4022<div class="page_body">
4023<br /><br />
4024$status - $error
4025<br />
4026EOF
4027        if (defined $extra) {
4028                print "<hr />\n" .
4029                      "$extra\n";
4030        }
4031        print "</div>\n";
4032
4033        git_footer_html();
4034        goto DONE_GITWEB
4035                unless ($opts{'-error_handler'});
4036}
4037
4038## ----------------------------------------------------------------------
4039## functions printing or outputting HTML: navigation
4040
4041sub git_print_page_nav {
4042        my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
4043        $extra = '' if !defined $extra; # pager or formats
4044
4045        my @navs = qw(summary shortlog log commit commitdiff tree);
4046        if ($suppress) {
4047                @navs = grep { $_ ne $suppress } @navs;
4048        }
4049
4050        my %arg = map { $_ => {action=>$_} } @navs;
4051        if (defined $head) {
4052                for (qw(commit commitdiff)) {
4053                        $arg{$_}{'hash'} = $head;
4054                }
4055                if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
4056                        for (qw(shortlog log)) {
4057                                $arg{$_}{'hash'} = $head;
4058                        }
4059                }
4060        }
4061
4062        $arg{'tree'}{'hash'} = $treehead if defined $treehead;
4063        $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
4064
4065        my @actions = gitweb_get_feature('actions');
4066        my %repl = (
4067                '%' => '%',
4068                'n' => $project,         # project name
4069                'f' => $git_dir,         # project path within filesystem
4070                'h' => $treehead || '',  # current hash ('h' parameter)
4071                'b' => $treebase || '',  # hash base ('hb' parameter)
4072        );
4073        while (@actions) {
4074                my ($label, $link, $pos) = splice(@actions,0,3);
4075                # insert
4076                @navs = map { $_ eq $pos ? ($_, $label) : $_ } @navs;
4077                # munch munch
4078                $link =~ s/%([%nfhb])/$repl{$1}/g;
4079                $arg{$label}{'_href'} = $link;
4080        }
4081
4082        print "<div class=\"page_nav\">\n" .
4083                (join " | ",
4084                 map { $_ eq $current ?
4085                       $_ : $cgi->a({-href => ($arg{$_}{_href} ? $arg{$_}{_href} : href(%{$arg{$_}}))}, "$_")
4086                 } @navs);
4087        print "<br/>\n$extra<br/>\n" .
4088              "</div>\n";
4089}
4090
4091# returns a submenu for the nagivation of the refs views (tags, heads,
4092# remotes) with the current view disabled and the remotes view only
4093# available if the feature is enabled
4094sub format_ref_views {
4095        my ($current) = @_;
4096        my @ref_views = qw{tags heads};
4097        push @ref_views, 'remotes' if gitweb_check_feature('remote_heads');
4098        return join " | ", map {
4099                $_ eq $current ? $_ :
4100                $cgi->a({-href => href(action=>$_)}, $_)
4101        } @ref_views
4102}
4103
4104sub format_paging_nav {
4105        my ($action, $page, $has_next_link) = @_;
4106        my $paging_nav;
4107
4108
4109        if ($page > 0) {
4110                $paging_nav .=
4111                        $cgi->a({-href => href(-replay=>1, page=>undef)}, "first") .
4112                        " &sdot; " .
4113                        $cgi->a({-href => href(-replay=>1, page=>$page-1),
4114                                 -accesskey => "p", -title => "Alt-p"}, "prev");
4115        } else {
4116                $paging_nav .= "first &sdot; prev";
4117        }
4118
4119        if ($has_next_link) {
4120                $paging_nav .= " &sdot; " .
4121                        $cgi->a({-href => href(-replay=>1, page=>$page+1),
4122                                 -accesskey => "n", -title => "Alt-n"}, "next");
4123        } else {
4124                $paging_nav .= " &sdot; next";
4125        }
4126
4127        return $paging_nav;
4128}
4129
4130## ......................................................................
4131## functions printing or outputting HTML: div
4132
4133sub git_print_header_div {
4134        my ($action, $title, $hash, $hash_base) = @_;
4135        my %args = ();
4136
4137        $args{'action'} = $action;
4138        $args{'hash'} = $hash if $hash;
4139        $args{'hash_base'} = $hash_base if $hash_base;
4140
4141        print "<div class=\"header\">\n" .
4142              $cgi->a({-href => href(%args), -class => "title"},
4143              $title ? $title : $action) .
4144              "\n</div>\n";
4145}
4146
4147sub format_repo_url {
4148        my ($name, $url) = @_;
4149        return "<tr class=\"metadata_url\"><td>$name</td><td>$url</td></tr>\n";
4150}
4151
4152# Group output by placing it in a DIV element and adding a header.
4153# Options for start_div() can be provided by passing a hash reference as the
4154# first parameter to the function.
4155# Options to git_print_header_div() can be provided by passing an array
4156# reference. This must follow the options to start_div if they are present.
4157# The content can be a scalar, which is output as-is, a scalar reference, which
4158# is output after html escaping, an IO handle passed either as *handle or
4159# *handle{IO}, or a function reference. In the latter case all following
4160# parameters will be taken as argument to the content function call.
4161sub git_print_section {
4162        my ($div_args, $header_args, $content);
4163        my $arg = shift;
4164        if (ref($arg) eq 'HASH') {
4165                $div_args = $arg;
4166                $arg = shift;
4167        }
4168        if (ref($arg) eq 'ARRAY') {
4169                $header_args = $arg;
4170                $arg = shift;
4171        }
4172        $content = $arg;
4173
4174        print $cgi->start_div($div_args);
4175        git_print_header_div(@$header_args);
4176
4177        if (ref($content) eq 'CODE') {
4178                $content->(@_);
4179        } elsif (ref($content) eq 'SCALAR') {
4180                print esc_html($$content);
4181        } elsif (ref($content) eq 'GLOB' or ref($content) eq 'IO::Handle') {
4182                print <$content>;
4183        } elsif (!ref($content) && defined($content)) {
4184                print $content;
4185        }
4186
4187        print $cgi->end_div;
4188}
4189
4190sub format_timestamp_html {
4191        my $date = shift;
4192        my $strtime = $date->{'rfc2822'};
4193
4194        my (undef, undef, $datetime_class) =
4195                gitweb_get_feature('javascript-timezone');
4196        if ($datetime_class) {
4197                $strtime = qq!<span class="$datetime_class">$strtime</span>!;
4198        }
4199
4200        my $localtime_format = '(%02d:%02d %s)';
4201        if ($date->{'hour_local'} < 6) {
4202                $localtime_format = '(<span class="atnight">%02d:%02d</span> %s)';
4203        }
4204        $strtime .= ' ' .
4205                    sprintf($localtime_format,
4206                            $date->{'hour_local'}, $date->{'minute_local'}, $date->{'tz_local'});
4207
4208        return $strtime;
4209}
4210
4211# Outputs the author name and date in long form
4212sub git_print_authorship {
4213        my $co = shift;
4214        my %opts = @_;
4215        my $tag = $opts{-tag} || 'div';
4216        my $author = $co->{'author_name'};
4217
4218        my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
4219        print "<$tag class=\"author_date\">" .
4220              format_search_author($author, "author", esc_html($author)) .
4221              " [".format_timestamp_html(\%ad)."]".
4222              git_get_avatar($co->{'author_email'}, -pad_before => 1) .
4223              "</$tag>\n";
4224}
4225
4226# Outputs table rows containing the full author or committer information,
4227# in the format expected for 'commit' view (& similar).
4228# Parameters are a commit hash reference, followed by the list of people
4229# to output information for. If the list is empty it defaults to both
4230# author and committer.
4231sub git_print_authorship_rows {
4232        my $co = shift;
4233        # too bad we can't use @people = @_ || ('author', 'committer')
4234        my @people = @_;
4235        @people = ('author', 'committer') unless @people;
4236        foreach my $who (@people) {
4237                my %wd = parse_date($co->{"${who}_epoch"}, $co->{"${who}_tz"});
4238                print "<tr><td>$who</td><td>" .
4239                      format_search_author($co->{"${who}_name"}, $who,
4240                                           esc_html($co->{"${who}_name"})) . " " .
4241                      format_search_author($co->{"${who}_email"}, $who,
4242                                           esc_html("<" . $co->{"${who}_email"} . ">")) .
4243                      "</td><td rowspan=\"2\">" .
4244                      git_get_avatar($co->{"${who}_email"}, -size => 'double') .
4245                      "</td></tr>\n" .
4246                      "<tr>" .
4247                      "<td></td><td>" .
4248                      format_timestamp_html(\%wd) .
4249                      "</td>" .
4250                      "</tr>\n";
4251        }
4252}
4253
4254sub git_print_page_path {
4255        my $name = shift;
4256        my $type = shift;
4257        my $hb = shift;
4258
4259
4260        print "<div class=\"page_path\">";
4261        print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
4262                      -title => 'tree root'}, to_utf8("[$project]"));
4263        print " / ";
4264        if (defined $name) {
4265                my @dirname = split '/', $name;
4266                my $basename = pop @dirname;
4267                my $fullname = '';
4268
4269                foreach my $dir (@dirname) {
4270                        $fullname .= ($fullname ? '/' : '') . $dir;
4271                        print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
4272                                                     hash_base=>$hb),
4273                                      -title => $fullname}, esc_path($dir));
4274                        print " / ";
4275                }
4276                if (defined $type && $type eq 'blob') {
4277                        print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
4278                                                     hash_base=>$hb),
4279                                      -title => $name}, esc_path($basename));
4280                } elsif (defined $type && $type eq 'tree') {
4281                        print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
4282                                                     hash_base=>$hb),
4283                                      -title => $name}, esc_path($basename));
4284                        print " / ";
4285                } else {
4286                        print esc_path($basename);
4287                }
4288        }
4289        print "<br/></div>\n";
4290}
4291
4292sub git_print_log {
4293        my $log = shift;
4294        my %opts = @_;
4295
4296        if ($opts{'-remove_title'}) {
4297                # remove title, i.e. first line of log
4298                shift @$log;
4299        }
4300        # remove leading empty lines
4301        while (defined $log->[0] && $log->[0] eq "") {
4302                shift @$log;
4303        }
4304
4305        # print log
4306        my $signoff = 0;
4307        my $empty = 0;
4308        foreach my $line (@$log) {
4309                if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
4310                        $signoff = 1;
4311                        $empty = 0;
4312                        if (! $opts{'-remove_signoff'}) {
4313                                print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
4314                                next;
4315                        } else {
4316                                # remove signoff lines
4317                                next;
4318                        }
4319                } else {
4320                        $signoff = 0;
4321                }
4322
4323                # print only one empty line
4324                # do not print empty line after signoff
4325                if ($line eq "") {
4326                        next if ($empty || $signoff);
4327                        $empty = 1;
4328                } else {
4329                        $empty = 0;
4330                }
4331
4332                print format_log_line_html($line) . "<br/>\n";
4333        }
4334
4335        if ($opts{'-final_empty_line'}) {
4336                # end with single empty line
4337                print "<br/>\n" unless $empty;
4338        }
4339}
4340
4341# return link target (what link points to)
4342sub git_get_link_target {
4343        my $hash = shift;
4344        my $link_target;
4345
4346        # read link
4347        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
4348                or return;
4349        {
4350                local $/ = undef;
4351                $link_target = <$fd>;
4352        }
4353        close $fd
4354                or return;
4355
4356        return $link_target;
4357}
4358
4359# given link target, and the directory (basedir) the link is in,
4360# return target of link relative to top directory (top tree);
4361# return undef if it is not possible (including absolute links).
4362sub normalize_link_target {
4363        my ($link_target, $basedir) = @_;
4364
4365        # absolute symlinks (beginning with '/') cannot be normalized
4366        return if (substr($link_target, 0, 1) eq '/');
4367
4368        # normalize link target to path from top (root) tree (dir)
4369        my $path;
4370        if ($basedir) {
4371                $path = $basedir . '/' . $link_target;
4372        } else {
4373                # we are in top (root) tree (dir)
4374                $path = $link_target;
4375        }
4376
4377        # remove //, /./, and /../
4378        my @path_parts;
4379        foreach my $part (split('/', $path)) {
4380                # discard '.' and ''
4381                next if (!$part || $part eq '.');
4382                # handle '..'
4383                if ($part eq '..') {
4384                        if (@path_parts) {
4385                                pop @path_parts;
4386                        } else {
4387                                # link leads outside repository (outside top dir)
4388                                return;
4389                        }
4390                } else {
4391                        push @path_parts, $part;
4392                }
4393        }
4394        $path = join('/', @path_parts);
4395
4396        return $path;
4397}
4398
4399# print tree entry (row of git_tree), but without encompassing <tr> element
4400sub git_print_tree_entry {
4401        my ($t, $basedir, $hash_base, $have_blame) = @_;
4402
4403        my %base_key = ();
4404        $base_key{'hash_base'} = $hash_base if defined $hash_base;
4405
4406        # The format of a table row is: mode list link.  Where mode is
4407        # the mode of the entry, list is the name of the entry, an href,
4408        # and link is the action links of the entry.
4409
4410        print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
4411        if (exists $t->{'size'}) {
4412                print "<td class=\"size\">$t->{'size'}</td>\n";
4413        }
4414        if ($t->{'type'} eq "blob") {
4415                print "<td class=\"list\">" .
4416                        $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
4417                                               file_name=>"$basedir$t->{'name'}", %base_key),
4418                                -class => "list"}, esc_path($t->{'name'}));
4419                if (S_ISLNK(oct $t->{'mode'})) {
4420                        my $link_target = git_get_link_target($t->{'hash'});
4421                        if ($link_target) {
4422                                my $norm_target = normalize_link_target($link_target, $basedir);
4423                                if (defined $norm_target) {
4424                                        print " -> " .
4425                                              $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
4426                                                                     file_name=>$norm_target),
4427                                                       -title => $norm_target}, esc_path($link_target));
4428                                } else {
4429                                        print " -> " . esc_path($link_target);
4430                                }
4431                        }
4432                }
4433                print "</td>\n";
4434                print "<td class=\"link\">";
4435                print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
4436                                             file_name=>"$basedir$t->{'name'}", %base_key)},
4437                              "blob");
4438                if ($have_blame) {
4439                        print " | " .
4440                              $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
4441                                                     file_name=>"$basedir$t->{'name'}", %base_key)},
4442                                      "blame");
4443                }
4444                if (defined $hash_base) {
4445                        print " | " .
4446                              $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
4447                                                     hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
4448                                      "history");
4449                }
4450                print " | " .
4451                        $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
4452                                               file_name=>"$basedir$t->{'name'}")},
4453                                "raw");
4454                print "</td>\n";
4455
4456        } elsif ($t->{'type'} eq "tree") {
4457                print "<td class=\"list\">";
4458                print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
4459                                             file_name=>"$basedir$t->{'name'}",
4460                                             %base_key)},
4461                              esc_path($t->{'name'}));
4462                print "</td>\n";
4463                print "<td class=\"link\">";
4464                print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
4465                                             file_name=>"$basedir$t->{'name'}",
4466                                             %base_key)},
4467                              "tree");
4468                if (defined $hash_base) {
4469                        print " | " .
4470                              $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
4471                                                     file_name=>"$basedir$t->{'name'}")},
4472                                      "history");
4473                }
4474                print "</td>\n";
4475        } else {
4476                # unknown object: we can only present history for it
4477                # (this includes 'commit' object, i.e. submodule support)
4478                print "<td class=\"list\">" .
4479                      esc_path($t->{'name'}) .
4480                      "</td>\n";
4481                print "<td class=\"link\">";
4482                if (defined $hash_base) {
4483                        print $cgi->a({-href => href(action=>"history",
4484                                                     hash_base=>$hash_base,
4485                                                     file_name=>"$basedir$t->{'name'}")},
4486                                      "history");
4487                }
4488                print "</td>\n";
4489        }
4490}
4491
4492## ......................................................................
4493## functions printing large fragments of HTML
4494
4495# get pre-image filenames for merge (combined) diff
4496sub fill_from_file_info {
4497        my ($diff, @parents) = @_;
4498
4499        $diff->{'from_file'} = [ ];
4500        $diff->{'from_file'}[$diff->{'nparents'} - 1] = undef;
4501        for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
4502                if ($diff->{'status'}[$i] eq 'R' ||
4503                    $diff->{'status'}[$i] eq 'C') {
4504                        $diff->{'from_file'}[$i] =
4505                                git_get_path_by_hash($parents[$i], $diff->{'from_id'}[$i]);
4506                }
4507        }
4508
4509        return $diff;
4510}
4511
4512# is current raw difftree line of file deletion
4513sub is_deleted {
4514        my $diffinfo = shift;
4515
4516        return $diffinfo->{'to_id'} eq ('0' x 40);
4517}
4518
4519# does patch correspond to [previous] difftree raw line
4520# $diffinfo  - hashref of parsed raw diff format
4521# $patchinfo - hashref of parsed patch diff format
4522#              (the same keys as in $diffinfo)
4523sub is_patch_split {
4524        my ($diffinfo, $patchinfo) = @_;
4525
4526        return defined $diffinfo && defined $patchinfo
4527                && $diffinfo->{'to_file'} eq $patchinfo->{'to_file'};
4528}
4529
4530
4531sub git_difftree_body {
4532        my ($difftree, $hash, @parents) = @_;
4533        my ($parent) = $parents[0];
4534        my $have_blame = gitweb_check_feature('blame');
4535        print "<div class=\"list_head\">\n";
4536        if ($#{$difftree} > 10) {
4537                print(($#{$difftree} + 1) . " files changed:\n");
4538        }
4539        print "</div>\n";
4540
4541        print "<table class=\"" .
4542              (@parents > 1 ? "combined " : "") .
4543              "diff_tree\">\n";
4544
4545        # header only for combined diff in 'commitdiff' view
4546        my $has_header = @$difftree && @parents > 1 && $action eq 'commitdiff';
4547        if ($has_header) {
4548                # table header
4549                print "<thead><tr>\n" .
4550                       "<th></th><th></th>\n"; # filename, patchN link
4551                for (my $i = 0; $i < @parents; $i++) {
4552                        my $par = $parents[$i];
4553                        print "<th>" .
4554                              $cgi->a({-href => href(action=>"commitdiff",
4555                                                     hash=>$hash, hash_parent=>$par),
4556                                       -title => 'commitdiff to parent number ' .
4557                                                  ($i+1) . ': ' . substr($par,0,7)},
4558                                      $i+1) .
4559                              "&nbsp;</th>\n";
4560                }
4561                print "</tr></thead>\n<tbody>\n";
4562        }
4563
4564        my $alternate = 1;
4565        my $patchno = 0;
4566        foreach my $line (@{$difftree}) {
4567                my $diff = parsed_difftree_line($line);
4568
4569                if ($alternate) {
4570                        print "<tr class=\"dark\">\n";
4571                } else {
4572                        print "<tr class=\"light\">\n";
4573                }
4574                $alternate ^= 1;
4575
4576                if (exists $diff->{'nparents'}) { # combined diff
4577
4578                        fill_from_file_info($diff, @parents)
4579                                unless exists $diff->{'from_file'};
4580
4581                        if (!is_deleted($diff)) {
4582                                # file exists in the result (child) commit
4583                                print "<td>" .
4584                                      $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
4585                                                             file_name=>$diff->{'to_file'},
4586                                                             hash_base=>$hash),
4587                                              -class => "list"}, esc_path($diff->{'to_file'})) .
4588                                      "</td>\n";
4589                        } else {
4590                                print "<td>" .
4591                                      esc_path($diff->{'to_file'}) .
4592                                      "</td>\n";
4593                        }
4594
4595                        if ($action eq 'commitdiff') {
4596                                # link to patch
4597                                $patchno++;
4598                                print "<td class=\"link\">" .
4599                                      $cgi->a({-href => href(-anchor=>"patch$patchno")},
4600                                              "patch") .
4601                                      " | " .
4602                                      "</td>\n";
4603                        }
4604
4605                        my $has_history = 0;
4606                        my $not_deleted = 0;
4607                        for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
4608                                my $hash_parent = $parents[$i];
4609                                my $from_hash = $diff->{'from_id'}[$i];
4610                                my $from_path = $diff->{'from_file'}[$i];
4611                                my $status = $diff->{'status'}[$i];
4612
4613                                $has_history ||= ($status ne 'A');
4614                                $not_deleted ||= ($status ne 'D');
4615
4616                                if ($status eq 'A') {
4617                                        print "<td  class=\"link\" align=\"right\"> | </td>\n";
4618                                } elsif ($status eq 'D') {
4619                                        print "<td class=\"link\">" .
4620                                              $cgi->a({-href => href(action=>"blob",
4621                                                                     hash_base=>$hash,
4622                                                                     hash=>$from_hash,
4623                                                                     file_name=>$from_path)},
4624                                                      "blob" . ($i+1)) .
4625                                              " | </td>\n";
4626                                } else {
4627                                        if ($diff->{'to_id'} eq $from_hash) {
4628                                                print "<td class=\"link nochange\">";
4629                                        } else {
4630                                                print "<td class=\"link\">";
4631                                        }
4632                                        print $cgi->a({-href => href(action=>"blobdiff",
4633                                                                     hash=>$diff->{'to_id'},
4634                                                                     hash_parent=>$from_hash,
4635                                                                     hash_base=>$hash,
4636                                                                     hash_parent_base=>$hash_parent,
4637                                                                     file_name=>$diff->{'to_file'},
4638                                                                     file_parent=>$from_path)},
4639                                                      "diff" . ($i+1)) .
4640                                              " | </td>\n";
4641                                }
4642                        }
4643
4644                        print "<td class=\"link\">";
4645                        if ($not_deleted) {
4646                                print $cgi->a({-href => href(action=>"blob",
4647                                                             hash=>$diff->{'to_id'},
4648                                                             file_name=>$diff->{'to_file'},
4649                                                             hash_base=>$hash)},
4650                                              "blob");
4651                                print " | " if ($has_history);
4652                        }
4653                        if ($has_history) {
4654                                print $cgi->a({-href => href(action=>"history",
4655                                                             file_name=>$diff->{'to_file'},
4656                                                             hash_base=>$hash)},
4657                                              "history");
4658                        }
4659                        print "</td>\n";
4660
4661                        print "</tr>\n";
4662                        next; # instead of 'else' clause, to avoid extra indent
4663                }
4664                # else ordinary diff
4665
4666                my ($to_mode_oct, $to_mode_str, $to_file_type);
4667                my ($from_mode_oct, $from_mode_str, $from_file_type);
4668                if ($diff->{'to_mode'} ne ('0' x 6)) {
4669                        $to_mode_oct = oct $diff->{'to_mode'};
4670                        if (S_ISREG($to_mode_oct)) { # only for regular file
4671                                $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
4672                        }
4673                        $to_file_type = file_type($diff->{'to_mode'});
4674                }
4675                if ($diff->{'from_mode'} ne ('0' x 6)) {
4676                        $from_mode_oct = oct $diff->{'from_mode'};
4677                        if (S_ISREG($from_mode_oct)) { # only for regular file
4678                                $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
4679                        }
4680                        $from_file_type = file_type($diff->{'from_mode'});
4681                }
4682
4683                if ($diff->{'status'} eq "A") { # created
4684                        my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
4685                        $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
4686                        $mode_chng   .= "]</span>";
4687                        print "<td>";
4688                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
4689                                                     hash_base=>$hash, file_name=>$diff->{'file'}),
4690                                      -class => "list"}, esc_path($diff->{'file'}));
4691                        print "</td>\n";
4692                        print "<td>$mode_chng</td>\n";
4693                        print "<td class=\"link\">";
4694                        if ($action eq 'commitdiff') {
4695                                # link to patch
4696                                $patchno++;
4697                                print $cgi->a({-href => href(-anchor=>"patch$patchno")},
4698                                              "patch") .
4699                                      " | ";
4700                        }
4701                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
4702                                                     hash_base=>$hash, file_name=>$diff->{'file'})},
4703                                      "blob");
4704                        print "</td>\n";
4705
4706                } elsif ($diff->{'status'} eq "D") { # deleted
4707                        my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
4708                        print "<td>";
4709                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
4710                                                     hash_base=>$parent, file_name=>$diff->{'file'}),
4711                                       -class => "list"}, esc_path($diff->{'file'}));
4712                        print "</td>\n";
4713                        print "<td>$mode_chng</td>\n";
4714                        print "<td class=\"link\">";
4715                        if ($action eq 'commitdiff') {
4716                                # link to patch
4717                                $patchno++;
4718                                print $cgi->a({-href => href(-anchor=>"patch$patchno")},
4719                                              "patch") .
4720                                      " | ";
4721                        }
4722                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
4723                                                     hash_base=>$parent, file_name=>$diff->{'file'})},
4724                                      "blob") . " | ";
4725                        if ($have_blame) {
4726                                print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
4727                                                             file_name=>$diff->{'file'})},
4728                                              "blame") . " | ";
4729                        }
4730                        print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
4731                                                     file_name=>$diff->{'file'})},
4732                                      "history");
4733                        print "</td>\n";
4734
4735                } elsif ($diff->{'status'} eq "M" || $diff->{'status'} eq "T") { # modified, or type changed
4736                        my $mode_chnge = "";
4737                        if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
4738                                $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
4739                                if ($from_file_type ne $to_file_type) {
4740                                        $mode_chnge .= " from $from_file_type to $to_file_type";
4741                                }
4742                                if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
4743                                        if ($from_mode_str && $to_mode_str) {
4744                                                $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
4745                                        } elsif ($to_mode_str) {
4746                                                $mode_chnge .= " mode: $to_mode_str";
4747                                        }
4748                                }
4749                                $mode_chnge .= "]</span>\n";
4750                        }
4751                        print "<td>";
4752                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
4753                                                     hash_base=>$hash, file_name=>$diff->{'file'}),
4754                                      -class => "list"}, esc_path($diff->{'file'}));
4755                        print "</td>\n";
4756                        print "<td>$mode_chnge</td>\n";
4757                        print "<td class=\"link\">";
4758                        if ($action eq 'commitdiff') {
4759                                # link to patch
4760                                $patchno++;
4761                                print $cgi->a({-href => href(-anchor=>"patch$patchno")},
4762                                              "patch") .
4763                                      " | ";
4764                        } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
4765                                # "commit" view and modified file (not onlu mode changed)
4766                                print $cgi->a({-href => href(action=>"blobdiff",
4767                                                             hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
4768                                                             hash_base=>$hash, hash_parent_base=>$parent,
4769                                                             file_name=>$diff->{'file'})},
4770                                              "diff") .
4771                                      " | ";
4772                        }
4773                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
4774                                                     hash_base=>$hash, file_name=>$diff->{'file'})},
4775                                       "blob") . " | ";
4776                        if ($have_blame) {
4777                                print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
4778                                                             file_name=>$diff->{'file'})},
4779                                              "blame") . " | ";
4780                        }
4781                        print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
4782                                                     file_name=>$diff->{'file'})},
4783                                      "history");
4784                        print "</td>\n";
4785
4786                } elsif ($diff->{'status'} eq "R" || $diff->{'status'} eq "C") { # renamed or copied
4787                        my %status_name = ('R' => 'moved', 'C' => 'copied');
4788                        my $nstatus = $status_name{$diff->{'status'}};
4789                        my $mode_chng = "";
4790                        if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
4791                                # mode also for directories, so we cannot use $to_mode_str
4792                                $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
4793                        }
4794                        print "<td>" .
4795                              $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
4796                                                     hash=>$diff->{'to_id'}, file_name=>$diff->{'to_file'}),
4797                                      -class => "list"}, esc_path($diff->{'to_file'})) . "</td>\n" .
4798                              "<td><span class=\"file_status $nstatus\">[$nstatus from " .
4799                              $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
4800                                                     hash=>$diff->{'from_id'}, file_name=>$diff->{'from_file'}),
4801                                      -class => "list"}, esc_path($diff->{'from_file'})) .
4802                              " with " . (int $diff->{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
4803                              "<td class=\"link\">";
4804                        if ($action eq 'commitdiff') {
4805                                # link to patch
4806                                $patchno++;
4807                                print $cgi->a({-href => href(-anchor=>"patch$patchno")},
4808                                              "patch") .
4809                                      " | ";
4810                        } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
4811                                # "commit" view and modified file (not only pure rename or copy)
4812                                print $cgi->a({-href => href(action=>"blobdiff",
4813                                                             hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
4814                                                             hash_base=>$hash, hash_parent_base=>$parent,
4815                                                             file_name=>$diff->{'to_file'}, file_parent=>$diff->{'from_file'})},
4816                                              "diff") .
4817                                      " | ";
4818                        }
4819                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
4820                                                     hash_base=>$parent, file_name=>$diff->{'to_file'})},
4821                                      "blob") . " | ";
4822                        if ($have_blame) {
4823                                print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
4824                                                             file_name=>$diff->{'to_file'})},
4825                                              "blame") . " | ";
4826                        }
4827                        print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
4828                                                    file_name=>$diff->{'to_file'})},
4829                                      "history");
4830                        print "</td>\n";
4831
4832                } # we should not encounter Unmerged (U) or Unknown (X) status
4833                print "</tr>\n";
4834        }
4835        print "</tbody>" if $has_header;
4836        print "</table>\n";
4837}
4838
4839sub git_patchset_body {
4840        my ($fd, $difftree, $hash, @hash_parents) = @_;
4841        my ($hash_parent) = $hash_parents[0];
4842
4843        my $is_combined = (@hash_parents > 1);
4844        my $patch_idx = 0;
4845        my $patch_number = 0;
4846        my $patch_line;
4847        my $diffinfo;
4848        my $to_name;
4849        my (%from, %to);
4850
4851        print "<div class=\"patchset\">\n";
4852
4853        # skip to first patch
4854        while ($patch_line = <$fd>) {
4855                chomp $patch_line;
4856
4857                last if ($patch_line =~ m/^diff /);
4858        }
4859
4860 PATCH:
4861        while ($patch_line) {
4862
4863                # parse "git diff" header line
4864                if ($patch_line =~ m/^diff --git (\"(?:[^\\\"]*(?:\\.[^\\\"]*)*)\"|[^ "]*) (.*)$/) {
4865                        # $1 is from_name, which we do not use
4866                        $to_name = unquote($2);
4867                        $to_name =~ s!^b/!!;
4868                } elsif ($patch_line =~ m/^diff --(cc|combined) ("?.*"?)$/) {
4869                        # $1 is 'cc' or 'combined', which we do not use
4870                        $to_name = unquote($2);
4871                } else {
4872                        $to_name = undef;
4873                }
4874
4875                # check if current patch belong to current raw line
4876                # and parse raw git-diff line if needed
4877                if (is_patch_split($diffinfo, { 'to_file' => $to_name })) {
4878                        # this is continuation of a split patch
4879                        print "<div class=\"patch cont\">\n";
4880                } else {
4881                        # advance raw git-diff output if needed
4882                        $patch_idx++ if defined $diffinfo;
4883
4884                        # read and prepare patch information
4885                        $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
4886
4887                        # compact combined diff output can have some patches skipped
4888                        # find which patch (using pathname of result) we are at now;
4889                        if ($is_combined) {
4890                                while ($to_name ne $diffinfo->{'to_file'}) {
4891                                        print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
4892                                              format_diff_cc_simplified($diffinfo, @hash_parents) .
4893                                              "</div>\n";  # class="patch"
4894
4895                                        $patch_idx++;
4896                                        $patch_number++;
4897
4898                                        last if $patch_idx > $#$difftree;
4899                                        $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
4900                                }
4901                        }
4902
4903                        # modifies %from, %to hashes
4904                        parse_from_to_diffinfo($diffinfo, \%from, \%to, @hash_parents);
4905
4906                        # this is first patch for raw difftree line with $patch_idx index
4907                        # we index @$difftree array from 0, but number patches from 1
4908                        print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
4909                }
4910
4911                # git diff header
4912                #assert($patch_line =~ m/^diff /) if DEBUG;
4913                #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
4914                $patch_number++;
4915                # print "git diff" header
4916                print format_git_diff_header_line($patch_line, $diffinfo,
4917                                                  \%from, \%to);
4918
4919                # print extended diff header
4920                print "<div class=\"diff extended_header\">\n";
4921        EXTENDED_HEADER:
4922                while ($patch_line = <$fd>) {
4923                        chomp $patch_line;
4924
4925                        last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
4926
4927                        print format_extended_diff_header_line($patch_line, $diffinfo,
4928                                                               \%from, \%to);
4929                }
4930                print "</div>\n"; # class="diff extended_header"
4931
4932                # from-file/to-file diff header
4933                if (! $patch_line) {
4934                        print "</div>\n"; # class="patch"
4935                        last PATCH;
4936                }
4937                next PATCH if ($patch_line =~ m/^diff /);
4938                #assert($patch_line =~ m/^---/) if DEBUG;
4939
4940                my $last_patch_line = $patch_line;
4941                $patch_line = <$fd>;
4942                chomp $patch_line;
4943                #assert($patch_line =~ m/^\+\+\+/) if DEBUG;
4944
4945                print format_diff_from_to_header($last_patch_line, $patch_line,
4946                                                 $diffinfo, \%from, \%to,
4947                                                 @hash_parents);
4948
4949                # the patch itself
4950        LINE:
4951                while ($patch_line = <$fd>) {
4952                        chomp $patch_line;
4953
4954                        next PATCH if ($patch_line =~ m/^diff /);
4955
4956                        print format_diff_line($patch_line, \%from, \%to);
4957                }
4958
4959        } continue {
4960                print "</div>\n"; # class="patch"
4961        }
4962
4963        # for compact combined (--cc) format, with chunk and patch simplification
4964        # the patchset might be empty, but there might be unprocessed raw lines
4965        for (++$patch_idx if $patch_number > 0;
4966             $patch_idx < @$difftree;
4967             ++$patch_idx) {
4968                # read and prepare patch information
4969                $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
4970
4971                # generate anchor for "patch" links in difftree / whatchanged part
4972                print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
4973                      format_diff_cc_simplified($diffinfo, @hash_parents) .
4974                      "</div>\n";  # class="patch"
4975
4976                $patch_number++;
4977        }
4978
4979        if ($patch_number == 0) {
4980                if (@hash_parents > 1) {
4981                        print "<div class=\"diff nodifferences\">Trivial merge</div>\n";
4982                } else {
4983                        print "<div class=\"diff nodifferences\">No differences found</div>\n";
4984                }
4985        }
4986
4987        print "</div>\n"; # class="patchset"
4988}
4989
4990# . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4991
4992# fills project list info (age, description, owner, category, forks)
4993# for each project in the list, removing invalid projects from
4994# returned list
4995# NOTE: modifies $projlist, but does not remove entries from it
4996sub fill_project_list_info {
4997        my $projlist = shift;
4998        my @projects;
4999
5000        my $show_ctags = gitweb_check_feature('ctags');
5001 PROJECT:
5002        foreach my $pr (@$projlist) {
5003                my (@activity) = git_get_last_activity($pr->{'path'});
5004                unless (@activity) {
5005                        next PROJECT;
5006                }
5007                ($pr->{'age'}, $pr->{'age_string'}) = @activity;
5008                if (!defined $pr->{'descr'}) {
5009                        my $descr = git_get_project_description($pr->{'path'}) || "";
5010                        $descr = to_utf8($descr);
5011                        $pr->{'descr_long'} = $descr;
5012                        $pr->{'descr'} = chop_str($descr, $projects_list_description_width, 5);
5013                }
5014                if (!defined $pr->{'owner'}) {
5015                        $pr->{'owner'} = git_get_project_owner("$pr->{'path'}") || "";
5016                }
5017                if ($show_ctags) {
5018                        $pr->{'ctags'} = git_get_project_ctags($pr->{'path'});
5019                }
5020                if ($projects_list_group_categories && !defined $pr->{'category'}) {
5021                        my $cat = git_get_project_category($pr->{'path'}) ||
5022                                                           $project_list_default_category;
5023                        $pr->{'category'} = to_utf8($cat);
5024                }
5025
5026                push @projects, $pr;
5027        }
5028
5029        return @projects;
5030}
5031
5032sub sort_projects_list {
5033        my ($projlist, $order) = @_;
5034        my @projects;
5035
5036        my %order_info = (
5037                project => { key => 'path', type => 'str' },
5038                descr => { key => 'descr_long', type => 'str' },
5039                owner => { key => 'owner', type => 'str' },
5040                age => { key => 'age', type => 'num' }
5041        );
5042        my $oi = $order_info{$order};
5043        return @$projlist unless defined $oi;
5044        if ($oi->{'type'} eq 'str') {
5045                @projects = sort {$a->{$oi->{'key'}} cmp $b->{$oi->{'key'}}} @$projlist;
5046        } else {
5047                @projects = sort {$a->{$oi->{'key'}} <=> $b->{$oi->{'key'}}} @$projlist;
5048        }
5049
5050        return @projects;
5051}
5052
5053# returns a hash of categories, containing the list of project
5054# belonging to each category
5055sub build_projlist_by_category {
5056        my ($projlist, $from, $to) = @_;
5057        my %categories;
5058
5059        $from = 0 unless defined $from;
5060        $to = $#$projlist if (!defined $to || $#$projlist < $to);
5061
5062        for (my $i = $from; $i <= $to; $i++) {
5063                my $pr = $projlist->[$i];
5064                push @{$categories{ $pr->{'category'} }}, $pr;
5065        }
5066
5067        return wantarray ? %categories : \%categories;
5068}
5069
5070# print 'sort by' <th> element, generating 'sort by $name' replay link
5071# if that order is not selected
5072sub print_sort_th {
5073        print format_sort_th(@_);
5074}
5075
5076sub format_sort_th {
5077        my ($name, $order, $header) = @_;
5078        my $sort_th = "";
5079        $header ||= ucfirst($name);
5080
5081        if ($order eq $name) {
5082                $sort_th .= "<th>$header</th>\n";
5083        } else {
5084                $sort_th .= "<th>" .
5085                            $cgi->a({-href => href(-replay=>1, order=>$name),
5086                                     -class => "header"}, $header) .
5087                            "</th>\n";
5088        }
5089
5090        return $sort_th;
5091}
5092
5093sub git_project_list_rows {
5094        my ($projlist, $from, $to, $check_forks) = @_;
5095
5096        $from = 0 unless defined $from;
5097        $to = $#$projlist if (!defined $to || $#$projlist < $to);
5098
5099        my $alternate = 1;
5100        for (my $i = $from; $i <= $to; $i++) {
5101                my $pr = $projlist->[$i];
5102
5103                if ($alternate) {
5104                        print "<tr class=\"dark\">\n";
5105                } else {
5106                        print "<tr class=\"light\">\n";
5107                }
5108                $alternate ^= 1;
5109
5110                if ($check_forks) {
5111                        print "<td>";
5112                        if ($pr->{'forks'}) {
5113                                my $nforks = scalar @{$pr->{'forks'}};
5114                                if ($nforks > 0) {
5115                                        print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks"),
5116                                                       -title => "$nforks forks"}, "+");
5117                                } else {
5118                                        print $cgi->span({-title => "$nforks forks"}, "+");
5119                                }
5120                        }
5121                        print "</td>\n";
5122                }
5123                print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
5124                                        -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
5125                      "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
5126                                        -class => "list", -title => $pr->{'descr_long'}},
5127                                        esc_html($pr->{'descr'})) . "</td>\n" .
5128                      "<td><i>" . chop_and_escape_str($pr->{'owner'}, 15) . "</i></td>\n";
5129                print "<td class=\"". age_class($pr->{'age'}) . "\">" .
5130                      (defined $pr->{'age_string'} ? $pr->{'age_string'} : "No commits") . "</td>\n" .
5131                      "<td class=\"link\">" .
5132                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
5133                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
5134                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
5135                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
5136                      ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
5137                      "</td>\n" .
5138                      "</tr>\n";
5139        }
5140}
5141
5142sub git_project_list_body {
5143        # actually uses global variable $project
5144        my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
5145        my @projects = @$projlist;
5146
5147        my $check_forks = gitweb_check_feature('forks');
5148        my $show_ctags  = gitweb_check_feature('ctags');
5149        my $tagfilter = $show_ctags ? $cgi->param('by_tag') : undef;
5150        $check_forks = undef
5151                if ($tagfilter || $searchtext);
5152
5153        # filtering out forks before filling info allows to do less work
5154        @projects = filter_forks_from_projects_list(\@projects)
5155                if ($check_forks);
5156        @projects = fill_project_list_info(\@projects);
5157        # searching projects require filling to be run before it
5158        @projects = search_projects_list(\@projects,
5159                                         'searchtext' => $searchtext,
5160                                         'tagfilter'  => $tagfilter)
5161                if ($tagfilter || $searchtext);
5162
5163        $order ||= $default_projects_order;
5164        $from = 0 unless defined $from;
5165        $to = $#projects if (!defined $to || $#projects < $to);
5166
5167        # short circuit
5168        if ($from > $to) {
5169                print "<center>\n".
5170                      "<b>No such projects found</b><br />\n".
5171                      "Click ".$cgi->a({-href=>href(project=>undef)},"here")." to view all projects<br />\n".
5172                      "</center>\n<br />\n";
5173                return;
5174        }
5175
5176        @projects = sort_projects_list(\@projects, $order);
5177
5178        if ($show_ctags) {
5179                my $ctags = git_gather_all_ctags(\@projects);
5180                my $cloud = git_populate_project_tagcloud($ctags);
5181                print git_show_project_tagcloud($cloud, 64);
5182        }
5183
5184        print "<table class=\"project_list\">\n";
5185        unless ($no_header) {
5186                print "<tr>\n";
5187                if ($check_forks) {
5188                        print "<th></th>\n";
5189                }
5190                print_sort_th('project', $order, 'Project');
5191                print_sort_th('descr', $order, 'Description');
5192                print_sort_th('owner', $order, 'Owner');
5193                print_sort_th('age', $order, 'Last Change');
5194                print "<th></th>\n" . # for links
5195                      "</tr>\n";
5196        }
5197
5198        if ($projects_list_group_categories) {
5199                # only display categories with projects in the $from-$to window
5200                @projects = sort {$a->{'category'} cmp $b->{'category'}} @projects[$from..$to];
5201                my %categories = build_projlist_by_category(\@projects, $from, $to);
5202                foreach my $cat (sort keys %categories) {
5203                        unless ($cat eq "") {
5204                                print "<tr>\n";
5205                                if ($check_forks) {
5206                                        print "<td></td>\n";
5207                                }
5208                                print "<td class=\"category\" colspan=\"5\">".esc_html($cat)."</td>\n";
5209                                print "</tr>\n";
5210                        }
5211
5212                        git_project_list_rows($categories{$cat}, undef, undef, $check_forks);
5213                }
5214        } else {
5215                git_project_list_rows(\@projects, $from, $to, $check_forks);
5216        }
5217
5218        if (defined $extra) {
5219                print "<tr>\n";
5220                if ($check_forks) {
5221                        print "<td></td>\n";
5222                }
5223                print "<td colspan=\"5\">$extra</td>\n" .
5224                      "</tr>\n";
5225        }
5226        print "</table>\n";
5227}
5228
5229sub git_log_body {
5230        # uses global variable $project
5231        my ($commitlist, $from, $to, $refs, $extra) = @_;
5232
5233        $from = 0 unless defined $from;
5234        $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
5235
5236        for (my $i = 0; $i <= $to; $i++) {
5237                my %co = %{$commitlist->[$i]};
5238                next if !%co;
5239                my $commit = $co{'id'};
5240                my $ref = format_ref_marker($refs, $commit);
5241                git_print_header_div('commit',
5242                               "<span class=\"age\">$co{'age_string'}</span>" .
5243                               esc_html($co{'title'}) . $ref,
5244                               $commit);
5245                print "<div class=\"title_text\">\n" .
5246                      "<div class=\"log_link\">\n" .
5247                      $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
5248                      " | " .
5249                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
5250                      " | " .
5251                      $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
5252                      "<br/>\n" .
5253                      "</div>\n";
5254                      git_print_authorship(\%co, -tag => 'span');
5255                      print "<br/>\n</div>\n";
5256
5257                print "<div class=\"log_body\">\n";
5258                git_print_log($co{'comment'}, -final_empty_line=> 1);
5259                print "</div>\n";
5260        }
5261        if ($extra) {
5262                print "<div class=\"page_nav\">\n";
5263                print "$extra\n";
5264                print "</div>\n";
5265        }
5266}
5267
5268sub git_shortlog_body {
5269        # uses global variable $project
5270        my ($commitlist, $from, $to, $refs, $extra) = @_;
5271
5272        $from = 0 unless defined $from;
5273        $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
5274
5275        print "<table class=\"shortlog\">\n";
5276        my $alternate = 1;
5277        for (my $i = $from; $i <= $to; $i++) {
5278                my %co = %{$commitlist->[$i]};
5279                my $commit = $co{'id'};
5280                my $ref = format_ref_marker($refs, $commit);
5281                if ($alternate) {
5282                        print "<tr class=\"dark\">\n";
5283                } else {
5284                        print "<tr class=\"light\">\n";
5285                }
5286                $alternate ^= 1;
5287                # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
5288                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
5289                      format_author_html('td', \%co, 10) . "<td>";
5290                print format_subject_html($co{'title'}, $co{'title_short'},
5291                                          href(action=>"commit", hash=>$commit), $ref);
5292                print "</td>\n" .
5293                      "<td class=\"link\">" .
5294                      $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
5295                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
5296                      $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
5297                my $snapshot_links = format_snapshot_links($commit);
5298                if (defined $snapshot_links) {
5299                        print " | " . $snapshot_links;
5300                }
5301                print "</td>\n" .
5302                      "</tr>\n";
5303        }
5304        if (defined $extra) {
5305                print "<tr>\n" .
5306                      "<td colspan=\"4\">$extra</td>\n" .
5307                      "</tr>\n";
5308        }
5309        print "</table>\n";
5310}
5311
5312sub git_history_body {
5313        # Warning: assumes constant type (blob or tree) during history
5314        my ($commitlist, $from, $to, $refs, $extra,
5315            $file_name, $file_hash, $ftype) = @_;
5316
5317        $from = 0 unless defined $from;
5318        $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
5319
5320        print "<table class=\"history\">\n";
5321        my $alternate = 1;
5322        for (my $i = $from; $i <= $to; $i++) {
5323                my %co = %{$commitlist->[$i]};
5324                if (!%co) {
5325                        next;
5326                }
5327                my $commit = $co{'id'};
5328
5329                my $ref = format_ref_marker($refs, $commit);
5330
5331                if ($alternate) {
5332                        print "<tr class=\"dark\">\n";
5333                } else {
5334                        print "<tr class=\"light\">\n";
5335                }
5336                $alternate ^= 1;
5337                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
5338        # shortlog:   format_author_html('td', \%co, 10)
5339                      format_author_html('td', \%co, 15, 3) . "<td>";
5340                # originally git_history used chop_str($co{'title'}, 50)
5341                print format_subject_html($co{'title'}, $co{'title_short'},
5342                                          href(action=>"commit", hash=>$commit), $ref);
5343                print "</td>\n" .
5344                      "<td class=\"link\">" .
5345                      $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
5346                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
5347
5348                if ($ftype eq 'blob') {
5349                        my $blob_current = $file_hash;
5350                        my $blob_parent  = git_get_hash_by_path($commit, $file_name);
5351                        if (defined $blob_current && defined $blob_parent &&
5352                                        $blob_current ne $blob_parent) {
5353                                print " | " .
5354                                        $cgi->a({-href => href(action=>"blobdiff",
5355                                                               hash=>$blob_current, hash_parent=>$blob_parent,
5356                                                               hash_base=>$hash_base, hash_parent_base=>$commit,
5357                                                               file_name=>$file_name)},
5358                                                "diff to current");
5359                        }
5360                }
5361                print "</td>\n" .
5362                      "</tr>\n";
5363        }
5364        if (defined $extra) {
5365                print "<tr>\n" .
5366                      "<td colspan=\"4\">$extra</td>\n" .
5367                      "</tr>\n";
5368        }
5369        print "</table>\n";
5370}
5371
5372sub git_tags_body {
5373        # uses global variable $project
5374        my ($taglist, $from, $to, $extra) = @_;
5375        $from = 0 unless defined $from;
5376        $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
5377
5378        print "<table class=\"tags\">\n";
5379        my $alternate = 1;
5380        for (my $i = $from; $i <= $to; $i++) {
5381                my $entry = $taglist->[$i];
5382                my %tag = %$entry;
5383                my $comment = $tag{'subject'};
5384                my $comment_short;
5385                if (defined $comment) {
5386                        $comment_short = chop_str($comment, 30, 5);
5387                }
5388                if ($alternate) {
5389                        print "<tr class=\"dark\">\n";
5390                } else {
5391                        print "<tr class=\"light\">\n";
5392                }
5393                $alternate ^= 1;
5394                if (defined $tag{'age'}) {
5395                        print "<td><i>$tag{'age'}</i></td>\n";
5396                } else {
5397                        print "<td></td>\n";
5398                }
5399                print "<td>" .
5400                      $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
5401                               -class => "list name"}, esc_html($tag{'name'})) .
5402                      "</td>\n" .
5403                      "<td>";
5404                if (defined $comment) {
5405                        print format_subject_html($comment, $comment_short,
5406                                                  href(action=>"tag", hash=>$tag{'id'}));
5407                }
5408                print "</td>\n" .
5409                      "<td class=\"selflink\">";
5410                if ($tag{'type'} eq "tag") {
5411                        print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
5412                } else {
5413                        print "&nbsp;";
5414                }
5415                print "</td>\n" .
5416                      "<td class=\"link\">" . " | " .
5417                      $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
5418                if ($tag{'reftype'} eq "commit") {
5419                        print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'fullname'})}, "shortlog") .
5420                              " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'fullname'})}, "log");
5421                } elsif ($tag{'reftype'} eq "blob") {
5422                        print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
5423                }
5424                print "</td>\n" .
5425                      "</tr>";
5426        }
5427        if (defined $extra) {
5428                print "<tr>\n" .
5429                      "<td colspan=\"5\">$extra</td>\n" .
5430                      "</tr>\n";
5431        }
5432        print "</table>\n";
5433}
5434
5435sub git_heads_body {
5436        # uses global variable $project
5437        my ($headlist, $head, $from, $to, $extra) = @_;
5438        $from = 0 unless defined $from;
5439        $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
5440
5441        print "<table class=\"heads\">\n";
5442        my $alternate = 1;
5443        for (my $i = $from; $i <= $to; $i++) {
5444                my $entry = $headlist->[$i];
5445                my %ref = %$entry;
5446                my $curr = $ref{'id'} eq $head;
5447                if ($alternate) {
5448                        print "<tr class=\"dark\">\n";
5449                } else {
5450                        print "<tr class=\"light\">\n";
5451                }
5452                $alternate ^= 1;
5453                print "<td><i>$ref{'age'}</i></td>\n" .
5454                      ($curr ? "<td class=\"current_head\">" : "<td>") .
5455                      $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'fullname'}),
5456                               -class => "list name"},esc_html($ref{'name'})) .
5457                      "</td>\n" .
5458                      "<td class=\"link\">" .
5459                      $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'fullname'})}, "shortlog") . " | " .
5460                      $cgi->a({-href => href(action=>"log", hash=>$ref{'fullname'})}, "log") . " | " .
5461                      $cgi->a({-href => href(action=>"tree", hash=>$ref{'fullname'}, hash_base=>$ref{'fullname'})}, "tree") .
5462                      "</td>\n" .
5463                      "</tr>";
5464        }
5465        if (defined $extra) {
5466                print "<tr>\n" .
5467                      "<td colspan=\"3\">$extra</td>\n" .
5468                      "</tr>\n";
5469        }
5470        print "</table>\n";
5471}
5472
5473# Display a single remote block
5474sub git_remote_block {
5475        my ($remote, $rdata, $limit, $head) = @_;
5476
5477        my $heads = $rdata->{'heads'};
5478        my $fetch = $rdata->{'fetch'};
5479        my $push = $rdata->{'push'};
5480
5481        my $urls_table = "<table class=\"projects_list\">\n" ;
5482
5483        if (defined $fetch) {
5484                if ($fetch eq $push) {
5485                        $urls_table .= format_repo_url("URL", $fetch);
5486                } else {
5487                        $urls_table .= format_repo_url("Fetch URL", $fetch);
5488                        $urls_table .= format_repo_url("Push URL", $push) if defined $push;
5489                }
5490        } elsif (defined $push) {
5491                $urls_table .= format_repo_url("Push URL", $push);
5492        } else {
5493                $urls_table .= format_repo_url("", "No remote URL");
5494        }
5495
5496        $urls_table .= "</table>\n";
5497
5498        my $dots;
5499        if (defined $limit && $limit < @$heads) {
5500                $dots = $cgi->a({-href => href(action=>"remotes", hash=>$remote)}, "...");
5501        }
5502
5503        print $urls_table;
5504        git_heads_body($heads, $head, 0, $limit, $dots);
5505}
5506
5507# Display a list of remote names with the respective fetch and push URLs
5508sub git_remotes_list {
5509        my ($remotedata, $limit) = @_;
5510        print "<table class=\"heads\">\n";
5511        my $alternate = 1;
5512        my @remotes = sort keys %$remotedata;
5513
5514        my $limited = $limit && $limit < @remotes;
5515
5516        $#remotes = $limit - 1 if $limited;
5517
5518        while (my $remote = shift @remotes) {
5519                my $rdata = $remotedata->{$remote};
5520                my $fetch = $rdata->{'fetch'};
5521                my $push = $rdata->{'push'};
5522                if ($alternate) {
5523                        print "<tr class=\"dark\">\n";
5524                } else {
5525                        print "<tr class=\"light\">\n";
5526                }
5527                $alternate ^= 1;
5528                print "<td>" .
5529                      $cgi->a({-href=> href(action=>'remotes', hash=>$remote),
5530                               -class=> "list name"},esc_html($remote)) .
5531                      "</td>";
5532                print "<td class=\"link\">" .
5533                      (defined $fetch ? $cgi->a({-href=> $fetch}, "fetch") : "fetch") .
5534                      " | " .
5535                      (defined $push ? $cgi->a({-href=> $push}, "push") : "push") .
5536                      "</td>";
5537
5538                print "</tr>\n";
5539        }
5540
5541        if ($limited) {
5542                print "<tr>\n" .
5543                      "<td colspan=\"3\">" .
5544                      $cgi->a({-href => href(action=>"remotes")}, "...") .
5545                      "</td>\n" . "</tr>\n";
5546        }
5547
5548        print "</table>";
5549}
5550
5551# Display remote heads grouped by remote, unless there are too many
5552# remotes, in which case we only display the remote names
5553sub git_remotes_body {
5554        my ($remotedata, $limit, $head) = @_;
5555        if ($limit and $limit < keys %$remotedata) {
5556                git_remotes_list($remotedata, $limit);
5557        } else {
5558                fill_remote_heads($remotedata);
5559                while (my ($remote, $rdata) = each %$remotedata) {
5560                        git_print_section({-class=>"remote", -id=>$remote},
5561                                ["remotes", $remote, $remote], sub {
5562                                        git_remote_block($remote, $rdata, $limit, $head);
5563                                });
5564                }
5565        }
5566}
5567
5568sub git_search_message {
5569        my %co = @_;
5570
5571        my $greptype;
5572        if ($searchtype eq 'commit') {
5573                $greptype = "--grep=";
5574        } elsif ($searchtype eq 'author') {
5575                $greptype = "--author=";
5576        } elsif ($searchtype eq 'committer') {
5577                $greptype = "--committer=";
5578        }
5579        $greptype .= $searchtext;
5580        my @commitlist = parse_commits($hash, 101, (100 * $page), undef,
5581                                       $greptype, '--regexp-ignore-case',
5582                                       $search_use_regexp ? '--extended-regexp' : '--fixed-strings');
5583
5584        my $paging_nav = '';
5585        if ($page > 0) {
5586                $paging_nav .=
5587                        $cgi->a({-href => href(-replay=>1, page=>undef)},
5588                                "first") .
5589                        " &sdot; " .
5590                        $cgi->a({-href => href(-replay=>1, page=>$page-1),
5591                                 -accesskey => "p", -title => "Alt-p"}, "prev");
5592        } else {
5593                $paging_nav .= "first &sdot; prev";
5594        }
5595        my $next_link = '';
5596        if ($#commitlist >= 100) {
5597                $next_link =
5598                        $cgi->a({-href => href(-replay=>1, page=>$page+1),
5599                                 -accesskey => "n", -title => "Alt-n"}, "next");
5600                $paging_nav .= " &sdot; $next_link";
5601        } else {
5602                $paging_nav .= " &sdot; next";
5603        }
5604
5605        git_header_html();
5606
5607        git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
5608        git_print_header_div('commit', esc_html($co{'title'}), $hash);
5609        if ($page == 0 && !@commitlist) {
5610                print "<p>No match.</p>\n";
5611        } else {
5612                git_search_grep_body(\@commitlist, 0, 99, $next_link);
5613        }
5614
5615        git_footer_html();
5616}
5617
5618sub git_search_changes {
5619        my %co = @_;
5620
5621        local $/ = "\n";
5622        open my $fd, '-|', git_cmd(), '--no-pager', 'log', @diff_opts,
5623                '--pretty=format:%H', '--no-abbrev', '--raw', "-S$searchtext",
5624                ($search_use_regexp ? '--pickaxe-regex' : ())
5625                        or die_error(500, "Open git-log failed");
5626
5627        git_header_html();
5628
5629        git_print_page_nav('','', $hash,$co{'tree'},$hash);
5630        git_print_header_div('commit', esc_html($co{'title'}), $hash);
5631
5632        print "<table class=\"pickaxe search\">\n";
5633        my $alternate = 1;
5634        undef %co;
5635        my @files;
5636        while (my $line = <$fd>) {
5637                chomp $line;
5638                next unless $line;
5639
5640                my %set = parse_difftree_raw_line($line);
5641                if (defined $set{'commit'}) {
5642                        # finish previous commit
5643                        if (%co) {
5644                                print "</td>\n" .
5645                                      "<td class=\"link\">" .
5646                                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})},
5647                                              "commit") .
5648                                      " | " .
5649                                      $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'},
5650                                                             hash_base=>$co{'id'})},
5651                                              "tree") .
5652                                      "</td>\n" .
5653                                      "</tr>\n";
5654                        }
5655
5656                        if ($alternate) {
5657                                print "<tr class=\"dark\">\n";
5658                        } else {
5659                                print "<tr class=\"light\">\n";
5660                        }
5661                        $alternate ^= 1;
5662                        %co = parse_commit($set{'commit'});
5663                        my $author = chop_and_escape_str($co{'author_name'}, 15, 5);
5664                        print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
5665                              "<td><i>$author</i></td>\n" .
5666                              "<td>" .
5667                              $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
5668                                      -class => "list subject"},
5669                                      chop_and_escape_str($co{'title'}, 50) . "<br/>");
5670                } elsif (defined $set{'to_id'}) {
5671                        next if ($set{'to_id'} =~ m/^0{40}$/);
5672
5673                        print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
5674                                                     hash=>$set{'to_id'}, file_name=>$set{'to_file'}),
5675                                      -class => "list"},
5676                                      "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
5677                              "<br/>\n";
5678                }
5679        }
5680        close $fd;
5681
5682        # finish last commit (warning: repetition!)
5683        if (%co) {
5684                print "</td>\n" .
5685                      "<td class=\"link\">" .
5686                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})},
5687                              "commit") .
5688                      " | " .
5689                      $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'},
5690                                             hash_base=>$co{'id'})},
5691                              "tree") .
5692                      "</td>\n" .
5693                      "</tr>\n";
5694        }
5695
5696        print "</table>\n";
5697
5698        git_footer_html();
5699}
5700
5701sub git_search_files {
5702        my %co = @_;
5703
5704        local $/ = "\n";
5705        open my $fd, "-|", git_cmd(), 'grep', '-n',
5706                $search_use_regexp ? ('-E', '-i') : '-F',
5707                $searchtext, $co{'tree'}
5708                        or die_error(500, "Open git-grep failed");
5709
5710        git_header_html();
5711
5712        git_print_page_nav('','', $hash,$co{'tree'},$hash);
5713        git_print_header_div('commit', esc_html($co{'title'}), $hash);
5714
5715        print "<table class=\"grep_search\">\n";
5716        my $alternate = 1;
5717        my $matches = 0;
5718        my $lastfile = '';
5719        while (my $line = <$fd>) {
5720                chomp $line;
5721                my ($file, $lno, $ltext, $binary);
5722                last if ($matches++ > 1000);
5723                if ($line =~ /^Binary file (.+) matches$/) {
5724                        $file = $1;
5725                        $binary = 1;
5726                } else {
5727                        (undef, $file, $lno, $ltext) = split(/:/, $line, 4);
5728                }
5729                if ($file ne $lastfile) {
5730                        $lastfile and print "</td></tr>\n";
5731                        if ($alternate++) {
5732                                print "<tr class=\"dark\">\n";
5733                        } else {
5734                                print "<tr class=\"light\">\n";
5735                        }
5736                        print "<td class=\"list\">".
5737                                $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
5738                                                       file_name=>"$file"),
5739                                        -class => "list"}, esc_path($file));
5740                        print "</td><td>\n";
5741                        $lastfile = $file;
5742                }
5743                if ($binary) {
5744                        print "<div class=\"binary\">Binary file</div>\n";
5745                } else {
5746                        $ltext = untabify($ltext);
5747                        if ($ltext =~ m/^(.*)($search_regexp)(.*)$/i) {
5748                                $ltext = esc_html($1, -nbsp=>1);
5749                                $ltext .= '<span class="match">';
5750                                $ltext .= esc_html($2, -nbsp=>1);
5751                                $ltext .= '</span>';
5752                                $ltext .= esc_html($3, -nbsp=>1);
5753                        } else {
5754                                $ltext = esc_html($ltext, -nbsp=>1);
5755                        }
5756                        print "<div class=\"pre\">" .
5757                                $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
5758                                                       file_name=>"$file").'#l'.$lno,
5759                                        -class => "linenr"}, sprintf('%4i', $lno))
5760                                . ' ' .  $ltext . "</div>\n";
5761                }
5762        }
5763        if ($lastfile) {
5764                print "</td></tr>\n";
5765                if ($matches > 1000) {
5766                        print "<div class=\"diff nodifferences\">Too many matches, listing trimmed</div>\n";
5767                }
5768        } else {
5769                print "<div class=\"diff nodifferences\">No matches found</div>\n";
5770        }
5771        close $fd;
5772
5773        print "</table>\n";
5774
5775        git_footer_html();
5776}
5777
5778sub git_search_grep_body {
5779        my ($commitlist, $from, $to, $extra) = @_;
5780        $from = 0 unless defined $from;
5781        $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
5782
5783        print "<table class=\"commit_search\">\n";
5784        my $alternate = 1;
5785        for (my $i = $from; $i <= $to; $i++) {
5786                my %co = %{$commitlist->[$i]};
5787                if (!%co) {
5788                        next;
5789                }
5790                my $commit = $co{'id'};
5791                if ($alternate) {
5792                        print "<tr class=\"dark\">\n";
5793                } else {
5794                        print "<tr class=\"light\">\n";
5795                }
5796                $alternate ^= 1;
5797                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
5798                      format_author_html('td', \%co, 15, 5) .
5799                      "<td>" .
5800                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
5801                               -class => "list subject"},
5802                              chop_and_escape_str($co{'title'}, 50) . "<br/>");
5803                my $comment = $co{'comment'};
5804                foreach my $line (@$comment) {
5805                        if ($line =~ m/^(.*?)($search_regexp)(.*)$/i) {
5806                                my ($lead, $match, $trail) = ($1, $2, $3);
5807                                $match = chop_str($match, 70, 5, 'center');
5808                                my $contextlen = int((80 - length($match))/2);
5809                                $contextlen = 30 if ($contextlen > 30);
5810                                $lead  = chop_str($lead,  $contextlen, 10, 'left');
5811                                $trail = chop_str($trail, $contextlen, 10, 'right');
5812
5813                                $lead  = esc_html($lead);
5814                                $match = esc_html($match);
5815                                $trail = esc_html($trail);
5816
5817                                print "$lead<span class=\"match\">$match</span>$trail<br />";
5818                        }
5819                }
5820                print "</td>\n" .
5821                      "<td class=\"link\">" .
5822                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
5823                      " | " .
5824                      $cgi->a({-href => href(action=>"commitdiff", hash=>$co{'id'})}, "commitdiff") .
5825                      " | " .
5826                      $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
5827                print "</td>\n" .
5828                      "</tr>\n";
5829        }
5830        if (defined $extra) {
5831                print "<tr>\n" .
5832                      "<td colspan=\"3\">$extra</td>\n" .
5833                      "</tr>\n";
5834        }
5835        print "</table>\n";
5836}
5837
5838## ======================================================================
5839## ======================================================================
5840## actions
5841
5842sub git_project_list {
5843        my $order = $input_params{'order'};
5844        if (defined $order && $order !~ m/none|project|descr|owner|age/) {
5845                die_error(400, "Unknown order parameter");
5846        }
5847
5848        my @list = git_get_projects_list();
5849        if (!@list) {
5850                die_error(404, "No projects found");
5851        }
5852
5853        git_header_html();
5854        if (defined $home_text && -f $home_text) {
5855                print "<div class=\"index_include\">\n";
5856                insert_file($home_text);
5857                print "</div>\n";
5858        }
5859        print $cgi->startform(-method => "get") .
5860              "<p class=\"projsearch\">Search:\n" .
5861              $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
5862              "</p>" .
5863              $cgi->end_form() . "\n";
5864        git_project_list_body(\@list, $order);
5865        git_footer_html();
5866}
5867
5868sub git_forks {
5869        my $order = $input_params{'order'};
5870        if (defined $order && $order !~ m/none|project|descr|owner|age/) {
5871                die_error(400, "Unknown order parameter");
5872        }
5873
5874        my @list = git_get_projects_list($project);
5875        if (!@list) {
5876                die_error(404, "No forks found");
5877        }
5878
5879        git_header_html();
5880        git_print_page_nav('','');
5881        git_print_header_div('summary', "$project forks");
5882        git_project_list_body(\@list, $order);
5883        git_footer_html();
5884}
5885
5886sub git_project_index {
5887        my @projects = git_get_projects_list();
5888        if (!@projects) {
5889                die_error(404, "No projects found");
5890        }
5891
5892        print $cgi->header(
5893                -type => 'text/plain',
5894                -charset => 'utf-8',
5895                -content_disposition => 'inline; filename="index.aux"');
5896
5897        foreach my $pr (@projects) {
5898                if (!exists $pr->{'owner'}) {
5899                        $pr->{'owner'} = git_get_project_owner("$pr->{'path'}");
5900                }
5901
5902                my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
5903                # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
5904                $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
5905                $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
5906                $path  =~ s/ /\+/g;
5907                $owner =~ s/ /\+/g;
5908
5909                print "$path $owner\n";
5910        }
5911}
5912
5913sub git_summary {
5914        my $descr = git_get_project_description($project) || "none";
5915        my %co = parse_commit("HEAD");
5916        my %cd = %co ? parse_date($co{'committer_epoch'}, $co{'committer_tz'}) : ();
5917        my $head = $co{'id'};
5918        my $remote_heads = gitweb_check_feature('remote_heads');
5919
5920        my $owner = git_get_project_owner($project);
5921
5922        my $refs = git_get_references();
5923        # These get_*_list functions return one more to allow us to see if
5924        # there are more ...
5925        my @taglist  = git_get_tags_list(16);
5926        my @headlist = git_get_heads_list(16);
5927        my %remotedata = $remote_heads ? git_get_remotes_list() : ();
5928        my @forklist;
5929        my $check_forks = gitweb_check_feature('forks');
5930
5931        if ($check_forks) {
5932                # find forks of a project
5933                @forklist = git_get_projects_list($project);
5934                # filter out forks of forks
5935                @forklist = filter_forks_from_projects_list(\@forklist)
5936                        if (@forklist);
5937        }
5938
5939        git_header_html();
5940        git_print_page_nav('summary','', $head);
5941
5942        print "<div class=\"title\">&nbsp;</div>\n";
5943        print "<table class=\"projects_list\">\n" .
5944              "<tr id=\"metadata_desc\"><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
5945              "<tr id=\"metadata_owner\"><td>owner</td><td>" . esc_html($owner) . "</td></tr>\n";
5946        if (defined $cd{'rfc2822'}) {
5947                print "<tr id=\"metadata_lchange\"><td>last change</td>" .
5948                      "<td>".format_timestamp_html(\%cd)."</td></tr>\n";
5949        }
5950
5951        # use per project git URL list in $projectroot/$project/cloneurl
5952        # or make project git URL from git base URL and project name
5953        my $url_tag = "URL";
5954        my @url_list = git_get_project_url_list($project);
5955        @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
5956        foreach my $git_url (@url_list) {
5957                next unless $git_url;
5958                print format_repo_url($url_tag, $git_url);
5959                $url_tag = "";
5960        }
5961
5962        # Tag cloud
5963        my $show_ctags = gitweb_check_feature('ctags');
5964        if ($show_ctags) {
5965                my $ctags = git_get_project_ctags($project);
5966                if (%$ctags) {
5967                        # without ability to add tags, don't show if there are none
5968                        my $cloud = git_populate_project_tagcloud($ctags);
5969                        print "<tr id=\"metadata_ctags\">" .
5970                              "<td>content tags</td>" .
5971                              "<td>".git_show_project_tagcloud($cloud, 48)."</td>" .
5972                              "</tr>\n";
5973                }
5974        }
5975
5976        print "</table>\n";
5977
5978        # If XSS prevention is on, we don't include README.html.
5979        # TODO: Allow a readme in some safe format.
5980        if (!$prevent_xss && -s "$projectroot/$project/README.html") {
5981                print "<div class=\"title\">readme</div>\n" .
5982                      "<div class=\"readme\">\n";
5983                insert_file("$projectroot/$project/README.html");
5984                print "\n</div>\n"; # class="readme"
5985        }
5986
5987        # we need to request one more than 16 (0..15) to check if
5988        # those 16 are all
5989        my @commitlist = $head ? parse_commits($head, 17) : ();
5990        if (@commitlist) {
5991                git_print_header_div('shortlog');
5992                git_shortlog_body(\@commitlist, 0, 15, $refs,
5993                                  $#commitlist <=  15 ? undef :
5994                                  $cgi->a({-href => href(action=>"shortlog")}, "..."));
5995        }
5996
5997        if (@taglist) {
5998                git_print_header_div('tags');
5999                git_tags_body(\@taglist, 0, 15,
6000                              $#taglist <=  15 ? undef :
6001                              $cgi->a({-href => href(action=>"tags")}, "..."));
6002        }
6003
6004        if (@headlist) {
6005                git_print_header_div('heads');
6006                git_heads_body(\@headlist, $head, 0, 15,
6007                               $#headlist <= 15 ? undef :
6008                               $cgi->a({-href => href(action=>"heads")}, "..."));
6009        }
6010
6011        if (%remotedata) {
6012                git_print_header_div('remotes');
6013                git_remotes_body(\%remotedata, 15, $head);
6014        }
6015
6016        if (@forklist) {
6017                git_print_header_div('forks');
6018                git_project_list_body(\@forklist, 'age', 0, 15,
6019                                      $#forklist <= 15 ? undef :
6020                                      $cgi->a({-href => href(action=>"forks")}, "..."),
6021                                      'no_header');
6022        }
6023
6024        git_footer_html();
6025}
6026
6027sub git_tag {
6028        my %tag = parse_tag($hash);
6029
6030        if (! %tag) {
6031                die_error(404, "Unknown tag object");
6032        }
6033
6034        my $head = git_get_head_hash($project);
6035        git_header_html();
6036        git_print_page_nav('','', $head,undef,$head);
6037        git_print_header_div('commit', esc_html($tag{'name'}), $hash);
6038        print "<div class=\"title_text\">\n" .
6039              "<table class=\"object_header\">\n" .
6040              "<tr>\n" .
6041              "<td>object</td>\n" .
6042              "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
6043                               $tag{'object'}) . "</td>\n" .
6044              "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
6045                                              $tag{'type'}) . "</td>\n" .
6046              "</tr>\n";
6047        if (defined($tag{'author'})) {
6048                git_print_authorship_rows(\%tag, 'author');
6049        }
6050        print "</table>\n\n" .
6051              "</div>\n";
6052        print "<div class=\"page_body\">";
6053        my $comment = $tag{'comment'};
6054        foreach my $line (@$comment) {
6055                chomp $line;
6056                print esc_html($line, -nbsp=>1) . "<br/>\n";
6057        }
6058        print "</div>\n";
6059        git_footer_html();
6060}
6061
6062sub git_blame_common {
6063        my $format = shift || 'porcelain';
6064        if ($format eq 'porcelain' && $cgi->param('js')) {
6065                $format = 'incremental';
6066                $action = 'blame_incremental'; # for page title etc
6067        }
6068
6069        # permissions
6070        gitweb_check_feature('blame')
6071                or die_error(403, "Blame view not allowed");
6072
6073        # error checking
6074        die_error(400, "No file name given") unless $file_name;
6075        $hash_base ||= git_get_head_hash($project);
6076        die_error(404, "Couldn't find base commit") unless $hash_base;
6077        my %co = parse_commit($hash_base)
6078                or die_error(404, "Commit not found");
6079        my $ftype = "blob";
6080        if (!defined $hash) {
6081                $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
6082                        or die_error(404, "Error looking up file");
6083        } else {
6084                $ftype = git_get_type($hash);
6085                if ($ftype !~ "blob") {
6086                        die_error(400, "Object is not a blob");
6087                }
6088        }
6089
6090        my $fd;
6091        if ($format eq 'incremental') {
6092                # get file contents (as base)
6093                open $fd, "-|", git_cmd(), 'cat-file', 'blob', $hash
6094                        or die_error(500, "Open git-cat-file failed");
6095        } elsif ($format eq 'data') {
6096                # run git-blame --incremental
6097                open $fd, "-|", git_cmd(), "blame", "--incremental",
6098                        $hash_base, "--", $file_name
6099                        or die_error(500, "Open git-blame --incremental failed");
6100        } else {
6101                # run git-blame --porcelain
6102                open $fd, "-|", git_cmd(), "blame", '-p',
6103                        $hash_base, '--', $file_name
6104                        or die_error(500, "Open git-blame --porcelain failed");
6105        }
6106
6107        # incremental blame data returns early
6108        if ($format eq 'data') {
6109                print $cgi->header(
6110                        -type=>"text/plain", -charset => "utf-8",
6111                        -status=> "200 OK");
6112                local $| = 1; # output autoflush
6113                while (my $line = <$fd>) {
6114                        print to_utf8($line);
6115                }
6116                close $fd
6117                        or print "ERROR $!\n";
6118
6119                print 'END';
6120                if (defined $t0 && gitweb_check_feature('timed')) {
6121                        print ' '.
6122                              tv_interval($t0, [ gettimeofday() ]).
6123                              ' '.$number_of_git_cmds;
6124                }
6125                print "\n";
6126
6127                return;
6128        }
6129
6130        # page header
6131        git_header_html();
6132        my $formats_nav =
6133                $cgi->a({-href => href(action=>"blob", -replay=>1)},
6134                        "blob") .
6135                " | ";
6136        if ($format eq 'incremental') {
6137                $formats_nav .=
6138                        $cgi->a({-href => href(action=>"blame", javascript=>0, -replay=>1)},
6139                                "blame") . " (non-incremental)";
6140        } else {
6141                $formats_nav .=
6142                        $cgi->a({-href => href(action=>"blame_incremental", -replay=>1)},
6143                                "blame") . " (incremental)";
6144        }
6145        $formats_nav .=
6146                " | " .
6147                $cgi->a({-href => href(action=>"history", -replay=>1)},
6148                        "history") .
6149                " | " .
6150                $cgi->a({-href => href(action=>$action, file_name=>$file_name)},
6151                        "HEAD");
6152        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
6153        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
6154        git_print_page_path($file_name, $ftype, $hash_base);
6155
6156        # page body
6157        if ($format eq 'incremental') {
6158                print "<noscript>\n<div class=\"error\"><center><b>\n".
6159                      "This page requires JavaScript to run.\n Use ".
6160                      $cgi->a({-href => href(action=>'blame',javascript=>0,-replay=>1)},
6161                              'this page').
6162                      " instead.\n".
6163                      "</b></center></div>\n</noscript>\n";
6164
6165                print qq!<div id="progress_bar" style="width: 100%; background-color: yellow"></div>\n!;
6166        }
6167
6168        print qq!<div class="page_body">\n!;
6169        print qq!<div id="progress_info">... / ...</div>\n!
6170                if ($format eq 'incremental');
6171        print qq!<table id="blame_table" class="blame" width="100%">\n!.
6172              #qq!<col width="5.5em" /><col width="2.5em" /><col width="*" />\n!.
6173              qq!<thead>\n!.
6174              qq!<tr><th>Commit</th><th>Line</th><th>Data</th></tr>\n!.
6175              qq!</thead>\n!.
6176              qq!<tbody>\n!;
6177
6178        my @rev_color = qw(light dark);
6179        my $num_colors = scalar(@rev_color);
6180        my $current_color = 0;
6181
6182        if ($format eq 'incremental') {
6183                my $color_class = $rev_color[$current_color];
6184
6185                #contents of a file
6186                my $linenr = 0;
6187        LINE:
6188                while (my $line = <$fd>) {
6189                        chomp $line;
6190                        $linenr++;
6191
6192                        print qq!<tr id="l$linenr" class="$color_class">!.
6193                              qq!<td class="sha1"><a href=""> </a></td>!.
6194                              qq!<td class="linenr">!.
6195                              qq!<a class="linenr" href="">$linenr</a></td>!;
6196                        print qq!<td class="pre">! . esc_html($line) . "</td>\n";
6197                        print qq!</tr>\n!;
6198                }
6199
6200        } else { # porcelain, i.e. ordinary blame
6201                my %metainfo = (); # saves information about commits
6202
6203                # blame data
6204        LINE:
6205                while (my $line = <$fd>) {
6206                        chomp $line;
6207                        # the header: <SHA-1> <src lineno> <dst lineno> [<lines in group>]
6208                        # no <lines in group> for subsequent lines in group of lines
6209                        my ($full_rev, $orig_lineno, $lineno, $group_size) =
6210                           ($line =~ /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/);
6211                        if (!exists $metainfo{$full_rev}) {
6212                                $metainfo{$full_rev} = { 'nprevious' => 0 };
6213                        }
6214                        my $meta = $metainfo{$full_rev};
6215                        my $data;
6216                        while ($data = <$fd>) {
6217                                chomp $data;
6218                                last if ($data =~ s/^\t//); # contents of line
6219                                if ($data =~ /^(\S+)(?: (.*))?$/) {
6220                                        $meta->{$1} = $2 unless exists $meta->{$1};
6221                                }
6222                                if ($data =~ /^previous /) {
6223                                        $meta->{'nprevious'}++;
6224                                }
6225                        }
6226                        my $short_rev = substr($full_rev, 0, 8);
6227                        my $author = $meta->{'author'};
6228                        my %date =
6229                                parse_date($meta->{'author-time'}, $meta->{'author-tz'});
6230                        my $date = $date{'iso-tz'};
6231                        if ($group_size) {
6232                                $current_color = ($current_color + 1) % $num_colors;
6233                        }
6234                        my $tr_class = $rev_color[$current_color];
6235                        $tr_class .= ' boundary' if (exists $meta->{'boundary'});
6236                        $tr_class .= ' no-previous' if ($meta->{'nprevious'} == 0);
6237                        $tr_class .= ' multiple-previous' if ($meta->{'nprevious'} > 1);
6238                        print "<tr id=\"l$lineno\" class=\"$tr_class\">\n";
6239                        if ($group_size) {
6240                                print "<td class=\"sha1\"";
6241                                print " title=\"". esc_html($author) . ", $date\"";
6242                                print " rowspan=\"$group_size\"" if ($group_size > 1);
6243                                print ">";
6244                                print $cgi->a({-href => href(action=>"commit",
6245                                                             hash=>$full_rev,
6246                                                             file_name=>$file_name)},
6247                                              esc_html($short_rev));
6248                                if ($group_size >= 2) {
6249                                        my @author_initials = ($author =~ /\b([[:upper:]])\B/g);
6250                                        if (@author_initials) {
6251                                                print "<br />" .
6252                                                      esc_html(join('', @author_initials));
6253                                                #           or join('.', ...)
6254                                        }
6255                                }
6256                                print "</td>\n";
6257                        }
6258                        # 'previous' <sha1 of parent commit> <filename at commit>
6259                        if (exists $meta->{'previous'} &&
6260                            $meta->{'previous'} =~ /^([a-fA-F0-9]{40}) (.*)$/) {
6261                                $meta->{'parent'} = $1;
6262                                $meta->{'file_parent'} = unquote($2);
6263                        }
6264                        my $linenr_commit =
6265                                exists($meta->{'parent'}) ?
6266                                $meta->{'parent'} : $full_rev;
6267                        my $linenr_filename =
6268                                exists($meta->{'file_parent'}) ?
6269                                $meta->{'file_parent'} : unquote($meta->{'filename'});
6270                        my $blamed = href(action => 'blame',
6271                                          file_name => $linenr_filename,
6272                                          hash_base => $linenr_commit);
6273                        print "<td class=\"linenr\">";
6274                        print $cgi->a({ -href => "$blamed#l$orig_lineno",
6275                                        -class => "linenr" },
6276                                      esc_html($lineno));
6277                        print "</td>";
6278                        print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
6279                        print "</tr>\n";
6280                } # end while
6281
6282        }
6283
6284        # footer
6285        print "</tbody>\n".
6286              "</table>\n"; # class="blame"
6287        print "</div>\n";   # class="blame_body"
6288        close $fd
6289                or print "Reading blob failed\n";
6290
6291        git_footer_html();
6292}
6293
6294sub git_blame {
6295        git_blame_common();
6296}
6297
6298sub git_blame_incremental {
6299        git_blame_common('incremental');
6300}
6301
6302sub git_blame_data {
6303        git_blame_common('data');
6304}
6305
6306sub git_tags {
6307        my $head = git_get_head_hash($project);
6308        git_header_html();
6309        git_print_page_nav('','', $head,undef,$head,format_ref_views('tags'));
6310        git_print_header_div('summary', $project);
6311
6312        my @tagslist = git_get_tags_list();
6313        if (@tagslist) {
6314                git_tags_body(\@tagslist);
6315        }
6316        git_footer_html();
6317}
6318
6319sub git_heads {
6320        my $head = git_get_head_hash($project);
6321        git_header_html();
6322        git_print_page_nav('','', $head,undef,$head,format_ref_views('heads'));
6323        git_print_header_div('summary', $project);
6324
6325        my @headslist = git_get_heads_list();
6326        if (@headslist) {
6327                git_heads_body(\@headslist, $head);
6328        }
6329        git_footer_html();
6330}
6331
6332# used both for single remote view and for list of all the remotes
6333sub git_remotes {
6334        gitweb_check_feature('remote_heads')
6335                or die_error(403, "Remote heads view is disabled");
6336
6337        my $head = git_get_head_hash($project);
6338        my $remote = $input_params{'hash'};
6339
6340        my $remotedata = git_get_remotes_list($remote);
6341        die_error(500, "Unable to get remote information") unless defined $remotedata;
6342
6343        unless (%$remotedata) {
6344                die_error(404, defined $remote ?
6345                        "Remote $remote not found" :
6346                        "No remotes found");
6347        }
6348
6349        git_header_html(undef, undef, -action_extra => $remote);
6350        git_print_page_nav('', '',  $head, undef, $head,
6351                format_ref_views($remote ? '' : 'remotes'));
6352
6353        fill_remote_heads($remotedata);
6354        if (defined $remote) {
6355                git_print_header_div('remotes', "$remote remote for $project");
6356                git_remote_block($remote, $remotedata->{$remote}, undef, $head);
6357        } else {
6358                git_print_header_div('summary', "$project remotes");
6359                git_remotes_body($remotedata, undef, $head);
6360        }
6361
6362        git_footer_html();
6363}
6364
6365sub git_blob_plain {
6366        my $type = shift;
6367        my $expires;
6368
6369        if (!defined $hash) {
6370                if (defined $file_name) {
6371                        my $base = $hash_base || git_get_head_hash($project);
6372                        $hash = git_get_hash_by_path($base, $file_name, "blob")
6373                                or die_error(404, "Cannot find file");
6374                } else {
6375                        die_error(400, "No file name defined");
6376                }
6377        } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
6378                # blobs defined by non-textual hash id's can be cached
6379                $expires = "+1d";
6380        }
6381
6382        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
6383                or die_error(500, "Open git-cat-file blob '$hash' failed");
6384
6385        # content-type (can include charset)
6386        $type = blob_contenttype($fd, $file_name, $type);
6387
6388        # "save as" filename, even when no $file_name is given
6389        my $save_as = "$hash";
6390        if (defined $file_name) {
6391                $save_as = $file_name;
6392        } elsif ($type =~ m/^text\//) {
6393                $save_as .= '.txt';
6394        }
6395
6396        # With XSS prevention on, blobs of all types except a few known safe
6397        # ones are served with "Content-Disposition: attachment" to make sure
6398        # they don't run in our security domain.  For certain image types,
6399        # blob view writes an <img> tag referring to blob_plain view, and we
6400        # want to be sure not to break that by serving the image as an
6401        # attachment (though Firefox 3 doesn't seem to care).
6402        my $sandbox = $prevent_xss &&
6403                $type !~ m!^(?:text/[a-z]+|image/(?:gif|png|jpeg))(?:[ ;]|$)!;
6404
6405        # serve text/* as text/plain
6406        if ($prevent_xss &&
6407            ($type =~ m!^text/[a-z]+\b(.*)$! ||
6408             ($type =~ m!^[a-z]+/[a-z]\+xml\b(.*)$! && -T $fd))) {
6409                my $rest = $1;
6410                $rest = defined $rest ? $rest : '';
6411                $type = "text/plain$rest";
6412        }
6413
6414        print $cgi->header(
6415                -type => $type,
6416                -expires => $expires,
6417                -content_disposition =>
6418                        ($sandbox ? 'attachment' : 'inline')
6419                        . '; filename="' . $save_as . '"');
6420        local $/ = undef;
6421        binmode STDOUT, ':raw';
6422        print <$fd>;
6423        binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
6424        close $fd;
6425}
6426
6427sub git_blob {
6428        my $expires;
6429
6430        if (!defined $hash) {
6431                if (defined $file_name) {
6432                        my $base = $hash_base || git_get_head_hash($project);
6433                        $hash = git_get_hash_by_path($base, $file_name, "blob")
6434                                or die_error(404, "Cannot find file");
6435                } else {
6436                        die_error(400, "No file name defined");
6437                }
6438        } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
6439                # blobs defined by non-textual hash id's can be cached
6440                $expires = "+1d";
6441        }
6442
6443        my $have_blame = gitweb_check_feature('blame');
6444        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
6445                or die_error(500, "Couldn't cat $file_name, $hash");
6446        my $mimetype = blob_mimetype($fd, $file_name);
6447        # use 'blob_plain' (aka 'raw') view for files that cannot be displayed
6448        if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)! && -B $fd) {
6449                close $fd;
6450                return git_blob_plain($mimetype);
6451        }
6452        # we can have blame only for text/* mimetype
6453        $have_blame &&= ($mimetype =~ m!^text/!);
6454
6455        my $highlight = gitweb_check_feature('highlight');
6456        my $syntax = guess_file_syntax($highlight, $mimetype, $file_name);
6457        $fd = run_highlighter($fd, $highlight, $syntax)
6458                if $syntax;
6459
6460        git_header_html(undef, $expires);
6461        my $formats_nav = '';
6462        if (defined $hash_base && (my %co = parse_commit($hash_base))) {
6463                if (defined $file_name) {
6464                        if ($have_blame) {
6465                                $formats_nav .=
6466                                        $cgi->a({-href => href(action=>"blame", -replay=>1)},
6467                                                "blame") .
6468                                        " | ";
6469                        }
6470                        $formats_nav .=
6471                                $cgi->a({-href => href(action=>"history", -replay=>1)},
6472                                        "history") .
6473                                " | " .
6474                                $cgi->a({-href => href(action=>"blob_plain", -replay=>1)},
6475                                        "raw") .
6476                                " | " .
6477                                $cgi->a({-href => href(action=>"blob",
6478                                                       hash_base=>"HEAD", file_name=>$file_name)},
6479                                        "HEAD");
6480                } else {
6481                        $formats_nav .=
6482                                $cgi->a({-href => href(action=>"blob_plain", -replay=>1)},
6483                                        "raw");
6484                }
6485                git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
6486                git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
6487        } else {
6488                print "<div class=\"page_nav\">\n" .
6489                      "<br/><br/></div>\n" .
6490                      "<div class=\"title\">".esc_html($hash)."</div>\n";
6491        }
6492        git_print_page_path($file_name, "blob", $hash_base);
6493        print "<div class=\"page_body\">\n";
6494        if ($mimetype =~ m!^image/!) {
6495                print qq!<img type="!.esc_attr($mimetype).qq!"!;
6496                if ($file_name) {
6497                        print qq! alt="!.esc_attr($file_name).qq!" title="!.esc_attr($file_name).qq!"!;
6498                }
6499                print qq! src="! .
6500                      href(action=>"blob_plain", hash=>$hash,
6501                           hash_base=>$hash_base, file_name=>$file_name) .
6502                      qq!" />\n!;
6503        } else {
6504                my $nr;
6505                while (my $line = <$fd>) {
6506                        chomp $line;
6507                        $nr++;
6508                        $line = untabify($line);
6509                        printf qq!<div class="pre"><a id="l%i" href="%s#l%i" class="linenr">%4i</a> %s</div>\n!,
6510                               $nr, esc_attr(href(-replay => 1)), $nr, $nr,
6511                               $syntax ? sanitize($line) : esc_html($line, -nbsp=>1);
6512                }
6513        }
6514        close $fd
6515                or print "Reading blob failed.\n";
6516        print "</div>";
6517        git_footer_html();
6518}
6519
6520sub git_tree {
6521        if (!defined $hash_base) {
6522                $hash_base = "HEAD";
6523        }
6524        if (!defined $hash) {
6525                if (defined $file_name) {
6526                        $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
6527                } else {
6528                        $hash = $hash_base;
6529                }
6530        }
6531        die_error(404, "No such tree") unless defined($hash);
6532
6533        my $show_sizes = gitweb_check_feature('show-sizes');
6534        my $have_blame = gitweb_check_feature('blame');
6535
6536        my @entries = ();
6537        {
6538                local $/ = "\0";
6539                open my $fd, "-|", git_cmd(), "ls-tree", '-z',
6540                        ($show_sizes ? '-l' : ()), @extra_options, $hash
6541                        or die_error(500, "Open git-ls-tree failed");
6542                @entries = map { chomp; $_ } <$fd>;
6543                close $fd
6544                        or die_error(404, "Reading tree failed");
6545        }
6546
6547        my $refs = git_get_references();
6548        my $ref = format_ref_marker($refs, $hash_base);
6549        git_header_html();
6550        my $basedir = '';
6551        if (defined $hash_base && (my %co = parse_commit($hash_base))) {
6552                my @views_nav = ();
6553                if (defined $file_name) {
6554                        push @views_nav,
6555                                $cgi->a({-href => href(action=>"history", -replay=>1)},
6556                                        "history"),
6557                                $cgi->a({-href => href(action=>"tree",
6558                                                       hash_base=>"HEAD", file_name=>$file_name)},
6559                                        "HEAD"),
6560                }
6561                my $snapshot_links = format_snapshot_links($hash);
6562                if (defined $snapshot_links) {
6563                        # FIXME: Should be available when we have no hash base as well.
6564                        push @views_nav, $snapshot_links;
6565                }
6566                git_print_page_nav('tree','', $hash_base, undef, undef,
6567                                   join(' | ', @views_nav));
6568                git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
6569        } else {
6570                undef $hash_base;
6571                print "<div class=\"page_nav\">\n";
6572                print "<br/><br/></div>\n";
6573                print "<div class=\"title\">".esc_html($hash)."</div>\n";
6574        }
6575        if (defined $file_name) {
6576                $basedir = $file_name;
6577                if ($basedir ne '' && substr($basedir, -1) ne '/') {
6578                        $basedir .= '/';
6579                }
6580                git_print_page_path($file_name, 'tree', $hash_base);
6581        }
6582        print "<div class=\"page_body\">\n";
6583        print "<table class=\"tree\">\n";
6584        my $alternate = 1;
6585        # '..' (top directory) link if possible
6586        if (defined $hash_base &&
6587            defined $file_name && $file_name =~ m![^/]+$!) {
6588                if ($alternate) {
6589                        print "<tr class=\"dark\">\n";
6590                } else {
6591                        print "<tr class=\"light\">\n";
6592                }
6593                $alternate ^= 1;
6594
6595                my $up = $file_name;
6596                $up =~ s!/?[^/]+$!!;
6597                undef $up unless $up;
6598                # based on git_print_tree_entry
6599                print '<td class="mode">' . mode_str('040000') . "</td>\n";
6600                print '<td class="size">&nbsp;</td>'."\n" if $show_sizes;
6601                print '<td class="list">';
6602                print $cgi->a({-href => href(action=>"tree",
6603                                             hash_base=>$hash_base,
6604                                             file_name=>$up)},
6605                              "..");
6606                print "</td>\n";
6607                print "<td class=\"link\"></td>\n";
6608
6609                print "</tr>\n";
6610        }
6611        foreach my $line (@entries) {
6612                my %t = parse_ls_tree_line($line, -z => 1, -l => $show_sizes);
6613
6614                if ($alternate) {
6615                        print "<tr class=\"dark\">\n";
6616                } else {
6617                        print "<tr class=\"light\">\n";
6618                }
6619                $alternate ^= 1;
6620
6621                git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
6622
6623                print "</tr>\n";
6624        }
6625        print "</table>\n" .
6626              "</div>";
6627        git_footer_html();
6628}
6629
6630sub snapshot_name {
6631        my ($project, $hash) = @_;
6632
6633        # path/to/project.git  -> project
6634        # path/to/project/.git -> project
6635        my $name = to_utf8($project);
6636        $name =~ s,([^/])/*\.git$,$1,;
6637        $name = basename($name);
6638        # sanitize name
6639        $name =~ s/[[:cntrl:]]/?/g;
6640
6641        my $ver = $hash;
6642        if ($hash =~ /^[0-9a-fA-F]+$/) {
6643                # shorten SHA-1 hash
6644                my $full_hash = git_get_full_hash($project, $hash);
6645                if ($full_hash =~ /^$hash/ && length($hash) > 7) {
6646                        $ver = git_get_short_hash($project, $hash);
6647                }
6648        } elsif ($hash =~ m!^refs/tags/(.*)$!) {
6649                # tags don't need shortened SHA-1 hash
6650                $ver = $1;
6651        } else {
6652                # branches and other need shortened SHA-1 hash
6653                if ($hash =~ m!^refs/(?:heads|remotes)/(.*)$!) {
6654                        $ver = $1;
6655                }
6656                $ver .= '-' . git_get_short_hash($project, $hash);
6657        }
6658        # in case of hierarchical branch names
6659        $ver =~ s!/!.!g;
6660
6661        # name = project-version_string
6662        $name = "$name-$ver";
6663
6664        return wantarray ? ($name, $name) : $name;
6665}
6666
6667sub git_snapshot {
6668        my $format = $input_params{'snapshot_format'};
6669        if (!@snapshot_fmts) {
6670                die_error(403, "Snapshots not allowed");
6671        }
6672        # default to first supported snapshot format
6673        $format ||= $snapshot_fmts[0];
6674        if ($format !~ m/^[a-z0-9]+$/) {
6675                die_error(400, "Invalid snapshot format parameter");
6676        } elsif (!exists($known_snapshot_formats{$format})) {
6677                die_error(400, "Unknown snapshot format");
6678        } elsif ($known_snapshot_formats{$format}{'disabled'}) {
6679                die_error(403, "Snapshot format not allowed");
6680        } elsif (!grep($_ eq $format, @snapshot_fmts)) {
6681                die_error(403, "Unsupported snapshot format");
6682        }
6683
6684        my $type = git_get_type("$hash^{}");
6685        if (!$type) {
6686                die_error(404, 'Object does not exist');
6687        }  elsif ($type eq 'blob') {
6688                die_error(400, 'Object is not a tree-ish');
6689        }
6690
6691        my ($name, $prefix) = snapshot_name($project, $hash);
6692        my $filename = "$name$known_snapshot_formats{$format}{'suffix'}";
6693        my $cmd = quote_command(
6694                git_cmd(), 'archive',
6695                "--format=$known_snapshot_formats{$format}{'format'}",
6696                "--prefix=$prefix/", $hash);
6697        if (exists $known_snapshot_formats{$format}{'compressor'}) {
6698                $cmd .= ' | ' . quote_command(@{$known_snapshot_formats{$format}{'compressor'}});
6699        }
6700
6701        $filename =~ s/(["\\])/\\$1/g;
6702        print $cgi->header(
6703                -type => $known_snapshot_formats{$format}{'type'},
6704                -content_disposition => 'inline; filename="' . $filename . '"',
6705                -status => '200 OK');
6706
6707        open my $fd, "-|", $cmd
6708                or die_error(500, "Execute git-archive failed");
6709        binmode STDOUT, ':raw';
6710        print <$fd>;
6711        binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
6712        close $fd;
6713}
6714
6715sub git_log_generic {
6716        my ($fmt_name, $body_subr, $base, $parent, $file_name, $file_hash) = @_;
6717
6718        my $head = git_get_head_hash($project);
6719        if (!defined $base) {
6720                $base = $head;
6721        }
6722        if (!defined $page) {
6723                $page = 0;
6724        }
6725        my $refs = git_get_references();
6726
6727        my $commit_hash = $base;
6728        if (defined $parent) {
6729                $commit_hash = "$parent..$base";
6730        }
6731        my @commitlist =
6732                parse_commits($commit_hash, 101, (100 * $page),
6733                              defined $file_name ? ($file_name, "--full-history") : ());
6734
6735        my $ftype;
6736        if (!defined $file_hash && defined $file_name) {
6737                # some commits could have deleted file in question,
6738                # and not have it in tree, but one of them has to have it
6739                for (my $i = 0; $i < @commitlist; $i++) {
6740                        $file_hash = git_get_hash_by_path($commitlist[$i]{'id'}, $file_name);
6741                        last if defined $file_hash;
6742                }
6743        }
6744        if (defined $file_hash) {
6745                $ftype = git_get_type($file_hash);
6746        }
6747        if (defined $file_name && !defined $ftype) {
6748                die_error(500, "Unknown type of object");
6749        }
6750        my %co;
6751        if (defined $file_name) {
6752                %co = parse_commit($base)
6753                        or die_error(404, "Unknown commit object");
6754        }
6755
6756
6757        my $paging_nav = format_paging_nav($fmt_name, $page, $#commitlist >= 100);
6758        my $next_link = '';
6759        if ($#commitlist >= 100) {
6760                $next_link =
6761                        $cgi->a({-href => href(-replay=>1, page=>$page+1),
6762                                 -accesskey => "n", -title => "Alt-n"}, "next");
6763        }
6764        my $patch_max = gitweb_get_feature('patches');
6765        if ($patch_max && !defined $file_name) {
6766                if ($patch_max < 0 || @commitlist <= $patch_max) {
6767                        $paging_nav .= " &sdot; " .
6768                                $cgi->a({-href => href(action=>"patches", -replay=>1)},
6769                                        "patches");
6770                }
6771        }
6772
6773        git_header_html();
6774        git_print_page_nav($fmt_name,'', $hash,$hash,$hash, $paging_nav);
6775        if (defined $file_name) {
6776                git_print_header_div('commit', esc_html($co{'title'}), $base);
6777        } else {
6778                git_print_header_div('summary', $project)
6779        }
6780        git_print_page_path($file_name, $ftype, $hash_base)
6781                if (defined $file_name);
6782
6783        $body_subr->(\@commitlist, 0, 99, $refs, $next_link,
6784                     $file_name, $file_hash, $ftype);
6785
6786        git_footer_html();
6787}
6788
6789sub git_log {
6790        git_log_generic('log', \&git_log_body,
6791                        $hash, $hash_parent);
6792}
6793
6794sub git_commit {
6795        $hash ||= $hash_base || "HEAD";
6796        my %co = parse_commit($hash)
6797            or die_error(404, "Unknown commit object");
6798
6799        my $parent  = $co{'parent'};
6800        my $parents = $co{'parents'}; # listref
6801
6802        # we need to prepare $formats_nav before any parameter munging
6803        my $formats_nav;
6804        if (!defined $parent) {
6805                # --root commitdiff
6806                $formats_nav .= '(initial)';
6807        } elsif (@$parents == 1) {
6808                # single parent commit
6809                $formats_nav .=
6810                        '(parent: ' .
6811                        $cgi->a({-href => href(action=>"commit",
6812                                               hash=>$parent)},
6813                                esc_html(substr($parent, 0, 7))) .
6814                        ')';
6815        } else {
6816                # merge commit
6817                $formats_nav .=
6818                        '(merge: ' .
6819                        join(' ', map {
6820                                $cgi->a({-href => href(action=>"commit",
6821                                                       hash=>$_)},
6822                                        esc_html(substr($_, 0, 7)));
6823                        } @$parents ) .
6824                        ')';
6825        }
6826        if (gitweb_check_feature('patches') && @$parents <= 1) {
6827                $formats_nav .= " | " .
6828                        $cgi->a({-href => href(action=>"patch", -replay=>1)},
6829                                "patch");
6830        }
6831
6832        if (!defined $parent) {
6833                $parent = "--root";
6834        }
6835        my @difftree;
6836        open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
6837                @diff_opts,
6838                (@$parents <= 1 ? $parent : '-c'),
6839                $hash, "--"
6840                or die_error(500, "Open git-diff-tree failed");
6841        @difftree = map { chomp; $_ } <$fd>;
6842        close $fd or die_error(404, "Reading git-diff-tree failed");
6843
6844        # non-textual hash id's can be cached
6845        my $expires;
6846        if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
6847                $expires = "+1d";
6848        }
6849        my $refs = git_get_references();
6850        my $ref = format_ref_marker($refs, $co{'id'});
6851
6852        git_header_html(undef, $expires);
6853        git_print_page_nav('commit', '',
6854                           $hash, $co{'tree'}, $hash,
6855                           $formats_nav);
6856
6857        if (defined $co{'parent'}) {
6858                git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
6859        } else {
6860                git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
6861        }
6862        print "<div class=\"title_text\">\n" .
6863              "<table class=\"object_header\">\n";
6864        git_print_authorship_rows(\%co);
6865        print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
6866        print "<tr>" .
6867              "<td>tree</td>" .
6868              "<td class=\"sha1\">" .
6869              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
6870                       class => "list"}, $co{'tree'}) .
6871              "</td>" .
6872              "<td class=\"link\">" .
6873              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
6874                      "tree");
6875        my $snapshot_links = format_snapshot_links($hash);
6876        if (defined $snapshot_links) {
6877                print " | " . $snapshot_links;
6878        }
6879        print "</td>" .
6880              "</tr>\n";
6881
6882        foreach my $par (@$parents) {
6883                print "<tr>" .
6884                      "<td>parent</td>" .
6885                      "<td class=\"sha1\">" .
6886                      $cgi->a({-href => href(action=>"commit", hash=>$par),
6887                               class => "list"}, $par) .
6888                      "</td>" .
6889                      "<td class=\"link\">" .
6890                      $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
6891                      " | " .
6892                      $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
6893                      "</td>" .
6894                      "</tr>\n";
6895        }
6896        print "</table>".
6897              "</div>\n";
6898
6899        print "<div class=\"page_body\">\n";
6900        git_print_log($co{'comment'});
6901        print "</div>\n";
6902
6903        git_difftree_body(\@difftree, $hash, @$parents);
6904
6905        git_footer_html();
6906}
6907
6908sub git_object {
6909        # object is defined by:
6910        # - hash or hash_base alone
6911        # - hash_base and file_name
6912        my $type;
6913
6914        # - hash or hash_base alone
6915        if ($hash || ($hash_base && !defined $file_name)) {
6916                my $object_id = $hash || $hash_base;
6917
6918                open my $fd, "-|", quote_command(
6919                        git_cmd(), 'cat-file', '-t', $object_id) . ' 2> /dev/null'
6920                        or die_error(404, "Object does not exist");
6921                $type = <$fd>;
6922                chomp $type;
6923                close $fd
6924                        or die_error(404, "Object does not exist");
6925
6926        # - hash_base and file_name
6927        } elsif ($hash_base && defined $file_name) {
6928                $file_name =~ s,/+$,,;
6929
6930                system(git_cmd(), "cat-file", '-e', $hash_base) == 0
6931                        or die_error(404, "Base object does not exist");
6932
6933                # here errors should not hapen
6934                open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
6935                        or die_error(500, "Open git-ls-tree failed");
6936                my $line = <$fd>;
6937                close $fd;
6938
6939                #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
6940                unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
6941                        die_error(404, "File or directory for given base does not exist");
6942                }
6943                $type = $2;
6944                $hash = $3;
6945        } else {
6946                die_error(400, "Not enough information to find object");
6947        }
6948
6949        print $cgi->redirect(-uri => href(action=>$type, -full=>1,
6950                                          hash=>$hash, hash_base=>$hash_base,
6951                                          file_name=>$file_name),
6952                             -status => '302 Found');
6953}
6954
6955sub git_blobdiff {
6956        my $format = shift || 'html';
6957
6958        my $fd;
6959        my @difftree;
6960        my %diffinfo;
6961        my $expires;
6962
6963        # preparing $fd and %diffinfo for git_patchset_body
6964        # new style URI
6965        if (defined $hash_base && defined $hash_parent_base) {
6966                if (defined $file_name) {
6967                        # read raw output
6968                        open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
6969                                $hash_parent_base, $hash_base,
6970                                "--", (defined $file_parent ? $file_parent : ()), $file_name
6971                                or die_error(500, "Open git-diff-tree failed");
6972                        @difftree = map { chomp; $_ } <$fd>;
6973                        close $fd
6974                                or die_error(404, "Reading git-diff-tree failed");
6975                        @difftree
6976                                or die_error(404, "Blob diff not found");
6977
6978                } elsif (defined $hash &&
6979                         $hash =~ /[0-9a-fA-F]{40}/) {
6980                        # try to find filename from $hash
6981
6982                        # read filtered raw output
6983                        open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
6984                                $hash_parent_base, $hash_base, "--"
6985                                or die_error(500, "Open git-diff-tree failed");
6986                        @difftree =
6987                                # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
6988                                # $hash == to_id
6989                                grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
6990                                map { chomp; $_ } <$fd>;
6991                        close $fd
6992                                or die_error(404, "Reading git-diff-tree failed");
6993                        @difftree
6994                                or die_error(404, "Blob diff not found");
6995
6996                } else {
6997                        die_error(400, "Missing one of the blob diff parameters");
6998                }
6999
7000                if (@difftree > 1) {
7001                        die_error(400, "Ambiguous blob diff specification");
7002                }
7003
7004                %diffinfo = parse_difftree_raw_line($difftree[0]);
7005                $file_parent ||= $diffinfo{'from_file'} || $file_name;
7006                $file_name   ||= $diffinfo{'to_file'};
7007
7008                $hash_parent ||= $diffinfo{'from_id'};
7009                $hash        ||= $diffinfo{'to_id'};
7010
7011                # non-textual hash id's can be cached
7012                if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
7013                    $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
7014                        $expires = '+1d';
7015                }
7016
7017                # open patch output
7018                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
7019                        '-p', ($format eq 'html' ? "--full-index" : ()),
7020                        $hash_parent_base, $hash_base,
7021                        "--", (defined $file_parent ? $file_parent : ()), $file_name
7022                        or die_error(500, "Open git-diff-tree failed");
7023        }
7024
7025        # old/legacy style URI -- not generated anymore since 1.4.3.
7026        if (!%diffinfo) {
7027                die_error('404 Not Found', "Missing one of the blob diff parameters")
7028        }
7029
7030        # header
7031        if ($format eq 'html') {
7032                my $formats_nav =
7033                        $cgi->a({-href => href(action=>"blobdiff_plain", -replay=>1)},
7034                                "raw");
7035                git_header_html(undef, $expires);
7036                if (defined $hash_base && (my %co = parse_commit($hash_base))) {
7037                        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
7038                        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
7039                } else {
7040                        print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
7041                        print "<div class=\"title\">".esc_html("$hash vs $hash_parent")."</div>\n";
7042                }
7043                if (defined $file_name) {
7044                        git_print_page_path($file_name, "blob", $hash_base);
7045                } else {
7046                        print "<div class=\"page_path\"></div>\n";
7047                }
7048
7049        } elsif ($format eq 'plain') {
7050                print $cgi->header(
7051                        -type => 'text/plain',
7052                        -charset => 'utf-8',
7053                        -expires => $expires,
7054                        -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
7055
7056                print "X-Git-Url: " . $cgi->self_url() . "\n\n";
7057
7058        } else {
7059                die_error(400, "Unknown blobdiff format");
7060        }
7061
7062        # patch
7063        if ($format eq 'html') {
7064                print "<div class=\"page_body\">\n";
7065
7066                git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
7067                close $fd;
7068
7069                print "</div>\n"; # class="page_body"
7070                git_footer_html();
7071
7072        } else {
7073                while (my $line = <$fd>) {
7074                        $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
7075                        $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
7076
7077                        print $line;
7078
7079                        last if $line =~ m!^\+\+\+!;
7080                }
7081                local $/ = undef;
7082                print <$fd>;
7083                close $fd;
7084        }
7085}
7086
7087sub git_blobdiff_plain {
7088        git_blobdiff('plain');
7089}
7090
7091sub git_commitdiff {
7092        my %params = @_;
7093        my $format = $params{-format} || 'html';
7094
7095        my ($patch_max) = gitweb_get_feature('patches');
7096        if ($format eq 'patch') {
7097                die_error(403, "Patch view not allowed") unless $patch_max;
7098        }
7099
7100        $hash ||= $hash_base || "HEAD";
7101        my %co = parse_commit($hash)
7102            or die_error(404, "Unknown commit object");
7103
7104        # choose format for commitdiff for merge
7105        if (! defined $hash_parent && @{$co{'parents'}} > 1) {
7106                $hash_parent = '--cc';
7107        }
7108        # we need to prepare $formats_nav before almost any parameter munging
7109        my $formats_nav;
7110        if ($format eq 'html') {
7111                $formats_nav =
7112                        $cgi->a({-href => href(action=>"commitdiff_plain", -replay=>1)},
7113                                "raw");
7114                if ($patch_max && @{$co{'parents'}} <= 1) {
7115                        $formats_nav .= " | " .
7116                                $cgi->a({-href => href(action=>"patch", -replay=>1)},
7117                                        "patch");
7118                }
7119
7120                if (defined $hash_parent &&
7121                    $hash_parent ne '-c' && $hash_parent ne '--cc') {
7122                        # commitdiff with two commits given
7123                        my $hash_parent_short = $hash_parent;
7124                        if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
7125                                $hash_parent_short = substr($hash_parent, 0, 7);
7126                        }
7127                        $formats_nav .=
7128                                ' (from';
7129                        for (my $i = 0; $i < @{$co{'parents'}}; $i++) {
7130                                if ($co{'parents'}[$i] eq $hash_parent) {
7131                                        $formats_nav .= ' parent ' . ($i+1);
7132                                        last;
7133                                }
7134                        }
7135                        $formats_nav .= ': ' .
7136                                $cgi->a({-href => href(action=>"commitdiff",
7137                                                       hash=>$hash_parent)},
7138                                        esc_html($hash_parent_short)) .
7139                                ')';
7140                } elsif (!$co{'parent'}) {
7141                        # --root commitdiff
7142                        $formats_nav .= ' (initial)';
7143                } elsif (scalar @{$co{'parents'}} == 1) {
7144                        # single parent commit
7145                        $formats_nav .=
7146                                ' (parent: ' .
7147                                $cgi->a({-href => href(action=>"commitdiff",
7148                                                       hash=>$co{'parent'})},
7149                                        esc_html(substr($co{'parent'}, 0, 7))) .
7150                                ')';
7151                } else {
7152                        # merge commit
7153                        if ($hash_parent eq '--cc') {
7154                                $formats_nav .= ' | ' .
7155                                        $cgi->a({-href => href(action=>"commitdiff",
7156                                                               hash=>$hash, hash_parent=>'-c')},
7157                                                'combined');
7158                        } else { # $hash_parent eq '-c'
7159                                $formats_nav .= ' | ' .
7160                                        $cgi->a({-href => href(action=>"commitdiff",
7161                                                               hash=>$hash, hash_parent=>'--cc')},
7162                                                'compact');
7163                        }
7164                        $formats_nav .=
7165                                ' (merge: ' .
7166                                join(' ', map {
7167                                        $cgi->a({-href => href(action=>"commitdiff",
7168                                                               hash=>$_)},
7169                                                esc_html(substr($_, 0, 7)));
7170                                } @{$co{'parents'}} ) .
7171                                ')';
7172                }
7173        }
7174
7175        my $hash_parent_param = $hash_parent;
7176        if (!defined $hash_parent_param) {
7177                # --cc for multiple parents, --root for parentless
7178                $hash_parent_param =
7179                        @{$co{'parents'}} > 1 ? '--cc' : $co{'parent'} || '--root';
7180        }
7181
7182        # read commitdiff
7183        my $fd;
7184        my @difftree;
7185        if ($format eq 'html') {
7186                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
7187                        "--no-commit-id", "--patch-with-raw", "--full-index",
7188                        $hash_parent_param, $hash, "--"
7189                        or die_error(500, "Open git-diff-tree failed");
7190
7191                while (my $line = <$fd>) {
7192                        chomp $line;
7193                        # empty line ends raw part of diff-tree output
7194                        last unless $line;
7195                        push @difftree, scalar parse_difftree_raw_line($line);
7196                }
7197
7198        } elsif ($format eq 'plain') {
7199                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
7200                        '-p', $hash_parent_param, $hash, "--"
7201                        or die_error(500, "Open git-diff-tree failed");
7202        } elsif ($format eq 'patch') {
7203                # For commit ranges, we limit the output to the number of
7204                # patches specified in the 'patches' feature.
7205                # For single commits, we limit the output to a single patch,
7206                # diverging from the git-format-patch default.
7207                my @commit_spec = ();
7208                if ($hash_parent) {
7209                        if ($patch_max > 0) {
7210                                push @commit_spec, "-$patch_max";
7211                        }
7212                        push @commit_spec, '-n', "$hash_parent..$hash";
7213                } else {
7214                        if ($params{-single}) {
7215                                push @commit_spec, '-1';
7216                        } else {
7217                                if ($patch_max > 0) {
7218                                        push @commit_spec, "-$patch_max";
7219                                }
7220                                push @commit_spec, "-n";
7221                        }
7222                        push @commit_spec, '--root', $hash;
7223                }
7224                open $fd, "-|", git_cmd(), "format-patch", @diff_opts,
7225                        '--encoding=utf8', '--stdout', @commit_spec
7226                        or die_error(500, "Open git-format-patch failed");
7227        } else {
7228                die_error(400, "Unknown commitdiff format");
7229        }
7230
7231        # non-textual hash id's can be cached
7232        my $expires;
7233        if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
7234                $expires = "+1d";
7235        }
7236
7237        # write commit message
7238        if ($format eq 'html') {
7239                my $refs = git_get_references();
7240                my $ref = format_ref_marker($refs, $co{'id'});
7241
7242                git_header_html(undef, $expires);
7243                git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
7244                git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
7245                print "<div class=\"title_text\">\n" .
7246                      "<table class=\"object_header\">\n";
7247                git_print_authorship_rows(\%co);
7248                print "</table>".
7249                      "</div>\n";
7250                print "<div class=\"page_body\">\n";
7251                if (@{$co{'comment'}} > 1) {
7252                        print "<div class=\"log\">\n";
7253                        git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
7254                        print "</div>\n"; # class="log"
7255                }
7256
7257        } elsif ($format eq 'plain') {
7258                my $refs = git_get_references("tags");
7259                my $tagname = git_get_rev_name_tags($hash);
7260                my $filename = basename($project) . "-$hash.patch";
7261
7262                print $cgi->header(
7263                        -type => 'text/plain',
7264                        -charset => 'utf-8',
7265                        -expires => $expires,
7266                        -content_disposition => 'inline; filename="' . "$filename" . '"');
7267                my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
7268                print "From: " . to_utf8($co{'author'}) . "\n";
7269                print "Date: $ad{'rfc2822'} ($ad{'tz_local'})\n";
7270                print "Subject: " . to_utf8($co{'title'}) . "\n";
7271
7272                print "X-Git-Tag: $tagname\n" if $tagname;
7273                print "X-Git-Url: " . $cgi->self_url() . "\n\n";
7274
7275                foreach my $line (@{$co{'comment'}}) {
7276                        print to_utf8($line) . "\n";
7277                }
7278                print "---\n\n";
7279        } elsif ($format eq 'patch') {
7280                my $filename = basename($project) . "-$hash.patch";
7281
7282                print $cgi->header(
7283                        -type => 'text/plain',
7284                        -charset => 'utf-8',
7285                        -expires => $expires,
7286                        -content_disposition => 'inline; filename="' . "$filename" . '"');
7287        }
7288
7289        # write patch
7290        if ($format eq 'html') {
7291                my $use_parents = !defined $hash_parent ||
7292                        $hash_parent eq '-c' || $hash_parent eq '--cc';
7293                git_difftree_body(\@difftree, $hash,
7294                                  $use_parents ? @{$co{'parents'}} : $hash_parent);
7295                print "<br/>\n";
7296
7297                git_patchset_body($fd, \@difftree, $hash,
7298                                  $use_parents ? @{$co{'parents'}} : $hash_parent);
7299                close $fd;
7300                print "</div>\n"; # class="page_body"
7301                git_footer_html();
7302
7303        } elsif ($format eq 'plain') {
7304                local $/ = undef;
7305                print <$fd>;
7306                close $fd
7307                        or print "Reading git-diff-tree failed\n";
7308        } elsif ($format eq 'patch') {
7309                local $/ = undef;
7310                print <$fd>;
7311                close $fd
7312                        or print "Reading git-format-patch failed\n";
7313        }
7314}
7315
7316sub git_commitdiff_plain {
7317        git_commitdiff(-format => 'plain');
7318}
7319
7320# format-patch-style patches
7321sub git_patch {
7322        git_commitdiff(-format => 'patch', -single => 1);
7323}
7324
7325sub git_patches {
7326        git_commitdiff(-format => 'patch');
7327}
7328
7329sub git_history {
7330        git_log_generic('history', \&git_history_body,
7331                        $hash_base, $hash_parent_base,
7332                        $file_name, $hash);
7333}
7334
7335sub git_search {
7336        $searchtype ||= 'commit';
7337
7338        # check if appropriate features are enabled
7339        gitweb_check_feature('search')
7340                or die_error(403, "Search is disabled");
7341        if ($searchtype eq 'pickaxe') {
7342                # pickaxe may take all resources of your box and run for several minutes
7343                # with every query - so decide by yourself how public you make this feature
7344                gitweb_check_feature('pickaxe')
7345                        or die_error(403, "Pickaxe search is disabled");
7346        }
7347        if ($searchtype eq 'grep') {
7348                # grep search might be potentially CPU-intensive, too
7349                gitweb_check_feature('grep')
7350                        or die_error(403, "Grep search is disabled");
7351        }
7352
7353        if (!defined $searchtext) {
7354                die_error(400, "Text field is empty");
7355        }
7356        if (!defined $hash) {
7357                $hash = git_get_head_hash($project);
7358        }
7359        my %co = parse_commit($hash);
7360        if (!%co) {
7361                die_error(404, "Unknown commit object");
7362        }
7363        if (!defined $page) {
7364                $page = 0;
7365        }
7366
7367        if ($searchtype eq 'commit' ||
7368            $searchtype eq 'author' ||
7369            $searchtype eq 'committer') {
7370                git_search_message(%co);
7371        } elsif ($searchtype eq 'pickaxe') {
7372                git_search_changes(%co);
7373        } elsif ($searchtype eq 'grep') {
7374                git_search_files(%co);
7375        } else {
7376                die_error(400, "Unknown search type");
7377        }
7378}
7379
7380sub git_search_help {
7381        git_header_html();
7382        git_print_page_nav('','', $hash,$hash,$hash);
7383        print <<EOT;
7384<p><strong>Pattern</strong> is by default a normal string that is matched precisely (but without
7385regard to case, except in the case of pickaxe). However, when you check the <em>re</em> checkbox,
7386the pattern entered is recognized as the POSIX extended
7387<a href="http://en.wikipedia.org/wiki/Regular_expression">regular expression</a> (also case
7388insensitive).</p>
7389<dl>
7390<dt><b>commit</b></dt>
7391<dd>The commit messages and authorship information will be scanned for the given pattern.</dd>
7392EOT
7393        my $have_grep = gitweb_check_feature('grep');
7394        if ($have_grep) {
7395                print <<EOT;
7396<dt><b>grep</b></dt>
7397<dd>All files in the currently selected tree (HEAD unless you are explicitly browsing
7398    a different one) are searched for the given pattern. On large trees, this search can take
7399a while and put some strain on the server, so please use it with some consideration. Note that
7400due to git-grep peculiarity, currently if regexp mode is turned off, the matches are
7401case-sensitive.</dd>
7402EOT
7403        }
7404        print <<EOT;
7405<dt><b>author</b></dt>
7406<dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given pattern.</dd>
7407<dt><b>committer</b></dt>
7408<dd>Name and e-mail of the committer and date of commit will be scanned for the given pattern.</dd>
7409EOT
7410        my $have_pickaxe = gitweb_check_feature('pickaxe');
7411        if ($have_pickaxe) {
7412                print <<EOT;
7413<dt><b>pickaxe</b></dt>
7414<dd>All commits that caused the string to appear or disappear from any file (changes that
7415added, removed or "modified" the string) will be listed. This search can take a while and
7416takes a lot of strain on the server, so please use it wisely. Note that since you may be
7417interested even in changes just changing the case as well, this search is case sensitive.</dd>
7418EOT
7419        }
7420        print "</dl>\n";
7421        git_footer_html();
7422}
7423
7424sub git_shortlog {
7425        git_log_generic('shortlog', \&git_shortlog_body,
7426                        $hash, $hash_parent);
7427}
7428
7429## ......................................................................
7430## feeds (RSS, Atom; OPML)
7431
7432sub git_feed {
7433        my $format = shift || 'atom';
7434        my $have_blame = gitweb_check_feature('blame');
7435
7436        # Atom: http://www.atomenabled.org/developers/syndication/
7437        # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
7438        if ($format ne 'rss' && $format ne 'atom') {
7439                die_error(400, "Unknown web feed format");
7440        }
7441
7442        # log/feed of current (HEAD) branch, log of given branch, history of file/directory
7443        my $head = $hash || 'HEAD';
7444        my @commitlist = parse_commits($head, 150, 0, $file_name);
7445
7446        my %latest_commit;
7447        my %latest_date;
7448        my $content_type = "application/$format+xml";
7449        if (defined $cgi->http('HTTP_ACCEPT') &&
7450                 $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
7451                # browser (feed reader) prefers text/xml
7452                $content_type = 'text/xml';
7453        }
7454        if (defined($commitlist[0])) {
7455                %latest_commit = %{$commitlist[0]};
7456                my $latest_epoch = $latest_commit{'committer_epoch'};
7457                %latest_date   = parse_date($latest_epoch, $latest_commit{'comitter_tz'});
7458                my $if_modified = $cgi->http('IF_MODIFIED_SINCE');
7459                if (defined $if_modified) {
7460                        my $since;
7461                        if (eval { require HTTP::Date; 1; }) {
7462                                $since = HTTP::Date::str2time($if_modified);
7463                        } elsif (eval { require Time::ParseDate; 1; }) {
7464                                $since = Time::ParseDate::parsedate($if_modified, GMT => 1);
7465                        }
7466                        if (defined $since && $latest_epoch <= $since) {
7467                                print $cgi->header(
7468                                        -type => $content_type,
7469                                        -charset => 'utf-8',
7470                                        -last_modified => $latest_date{'rfc2822'},
7471                                        -status => '304 Not Modified');
7472                                return;
7473                        }
7474                }
7475                print $cgi->header(
7476                        -type => $content_type,
7477                        -charset => 'utf-8',
7478                        -last_modified => $latest_date{'rfc2822'});
7479        } else {
7480                print $cgi->header(
7481                        -type => $content_type,
7482                        -charset => 'utf-8');
7483        }
7484
7485        # Optimization: skip generating the body if client asks only
7486        # for Last-Modified date.
7487        return if ($cgi->request_method() eq 'HEAD');
7488
7489        # header variables
7490        my $title = "$site_name - $project/$action";
7491        my $feed_type = 'log';
7492        if (defined $hash) {
7493                $title .= " - '$hash'";
7494                $feed_type = 'branch log';
7495                if (defined $file_name) {
7496                        $title .= " :: $file_name";
7497                        $feed_type = 'history';
7498                }
7499        } elsif (defined $file_name) {
7500                $title .= " - $file_name";
7501                $feed_type = 'history';
7502        }
7503        $title .= " $feed_type";
7504        my $descr = git_get_project_description($project);
7505        if (defined $descr) {
7506                $descr = esc_html($descr);
7507        } else {
7508                $descr = "$project " .
7509                         ($format eq 'rss' ? 'RSS' : 'Atom') .
7510                         " feed";
7511        }
7512        my $owner = git_get_project_owner($project);
7513        $owner = esc_html($owner);
7514
7515        #header
7516        my $alt_url;
7517        if (defined $file_name) {
7518                $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
7519        } elsif (defined $hash) {
7520                $alt_url = href(-full=>1, action=>"log", hash=>$hash);
7521        } else {
7522                $alt_url = href(-full=>1, action=>"summary");
7523        }
7524        print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
7525        if ($format eq 'rss') {
7526                print <<XML;
7527<rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
7528<channel>
7529XML
7530                print "<title>$title</title>\n" .
7531                      "<link>$alt_url</link>\n" .
7532                      "<description>$descr</description>\n" .
7533                      "<language>en</language>\n" .
7534                      # project owner is responsible for 'editorial' content
7535                      "<managingEditor>$owner</managingEditor>\n";
7536                if (defined $logo || defined $favicon) {
7537                        # prefer the logo to the favicon, since RSS
7538                        # doesn't allow both
7539                        my $img = esc_url($logo || $favicon);
7540                        print "<image>\n" .
7541                              "<url>$img</url>\n" .
7542                              "<title>$title</title>\n" .
7543                              "<link>$alt_url</link>\n" .
7544                              "</image>\n";
7545                }
7546                if (%latest_date) {
7547                        print "<pubDate>$latest_date{'rfc2822'}</pubDate>\n";
7548                        print "<lastBuildDate>$latest_date{'rfc2822'}</lastBuildDate>\n";
7549                }
7550                print "<generator>gitweb v.$version/$git_version</generator>\n";
7551        } elsif ($format eq 'atom') {
7552                print <<XML;
7553<feed xmlns="http://www.w3.org/2005/Atom">
7554XML
7555                print "<title>$title</title>\n" .
7556                      "<subtitle>$descr</subtitle>\n" .
7557                      '<link rel="alternate" type="text/html" href="' .
7558                      $alt_url . '" />' . "\n" .
7559                      '<link rel="self" type="' . $content_type . '" href="' .
7560                      $cgi->self_url() . '" />' . "\n" .
7561                      "<id>" . href(-full=>1) . "</id>\n" .
7562                      # use project owner for feed author
7563                      "<author><name>$owner</name></author>\n";
7564                if (defined $favicon) {
7565                        print "<icon>" . esc_url($favicon) . "</icon>\n";
7566                }
7567                if (defined $logo) {
7568                        # not twice as wide as tall: 72 x 27 pixels
7569                        print "<logo>" . esc_url($logo) . "</logo>\n";
7570                }
7571                if (! %latest_date) {
7572                        # dummy date to keep the feed valid until commits trickle in:
7573                        print "<updated>1970-01-01T00:00:00Z</updated>\n";
7574                } else {
7575                        print "<updated>$latest_date{'iso-8601'}</updated>\n";
7576                }
7577                print "<generator version='$version/$git_version'>gitweb</generator>\n";
7578        }
7579
7580        # contents
7581        for (my $i = 0; $i <= $#commitlist; $i++) {
7582                my %co = %{$commitlist[$i]};
7583                my $commit = $co{'id'};
7584                # we read 150, we always show 30 and the ones more recent than 48 hours
7585                if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
7586                        last;
7587                }
7588                my %cd = parse_date($co{'author_epoch'}, $co{'author_tz'});
7589
7590                # get list of changed files
7591                open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
7592                        $co{'parent'} || "--root",
7593                        $co{'id'}, "--", (defined $file_name ? $file_name : ())
7594                        or next;
7595                my @difftree = map { chomp; $_ } <$fd>;
7596                close $fd
7597                        or next;
7598
7599                # print element (entry, item)
7600                my $co_url = href(-full=>1, action=>"commitdiff", hash=>$commit);
7601                if ($format eq 'rss') {
7602                        print "<item>\n" .
7603                              "<title>" . esc_html($co{'title'}) . "</title>\n" .
7604                              "<author>" . esc_html($co{'author'}) . "</author>\n" .
7605                              "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
7606                              "<guid isPermaLink=\"true\">$co_url</guid>\n" .
7607                              "<link>$co_url</link>\n" .
7608                              "<description>" . esc_html($co{'title'}) . "</description>\n" .
7609                              "<content:encoded>" .
7610                              "<![CDATA[\n";
7611                } elsif ($format eq 'atom') {
7612                        print "<entry>\n" .
7613                              "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
7614                              "<updated>$cd{'iso-8601'}</updated>\n" .
7615                              "<author>\n" .
7616                              "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
7617                        if ($co{'author_email'}) {
7618                                print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
7619                        }
7620                        print "</author>\n" .
7621                              # use committer for contributor
7622                              "<contributor>\n" .
7623                              "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
7624                        if ($co{'committer_email'}) {
7625                                print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
7626                        }
7627                        print "</contributor>\n" .
7628                              "<published>$cd{'iso-8601'}</published>\n" .
7629                              "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
7630                              "<id>$co_url</id>\n" .
7631                              "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
7632                              "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
7633                }
7634                my $comment = $co{'comment'};
7635                print "<pre>\n";
7636                foreach my $line (@$comment) {
7637                        $line = esc_html($line);
7638                        print "$line\n";
7639                }
7640                print "</pre><ul>\n";
7641                foreach my $difftree_line (@difftree) {
7642                        my %difftree = parse_difftree_raw_line($difftree_line);
7643                        next if !$difftree{'from_id'};
7644
7645                        my $file = $difftree{'file'} || $difftree{'to_file'};
7646
7647                        print "<li>" .
7648                              "[" .
7649                              $cgi->a({-href => href(-full=>1, action=>"blobdiff",
7650                                                     hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
7651                                                     hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
7652                                                     file_name=>$file, file_parent=>$difftree{'from_file'}),
7653                                      -title => "diff"}, 'D');
7654                        if ($have_blame) {
7655                                print $cgi->a({-href => href(-full=>1, action=>"blame",
7656                                                             file_name=>$file, hash_base=>$commit),
7657                                              -title => "blame"}, 'B');
7658                        }
7659                        # if this is not a feed of a file history
7660                        if (!defined $file_name || $file_name ne $file) {
7661                                print $cgi->a({-href => href(-full=>1, action=>"history",
7662                                                             file_name=>$file, hash=>$commit),
7663                                              -title => "history"}, 'H');
7664                        }
7665                        $file = esc_path($file);
7666                        print "] ".
7667                              "$file</li>\n";
7668                }
7669                if ($format eq 'rss') {
7670                        print "</ul>]]>\n" .
7671                              "</content:encoded>\n" .
7672                              "</item>\n";
7673                } elsif ($format eq 'atom') {
7674                        print "</ul>\n</div>\n" .
7675                              "</content>\n" .
7676                              "</entry>\n";
7677                }
7678        }
7679
7680        # end of feed
7681        if ($format eq 'rss') {
7682                print "</channel>\n</rss>\n";
7683        } elsif ($format eq 'atom') {
7684                print "</feed>\n";
7685        }
7686}
7687
7688sub git_rss {
7689        git_feed('rss');
7690}
7691
7692sub git_atom {
7693        git_feed('atom');
7694}
7695
7696sub git_opml {
7697        my @list = git_get_projects_list();
7698        if (!@list) {
7699                die_error(404, "No projects found");
7700        }
7701
7702        print $cgi->header(
7703                -type => 'text/xml',
7704                -charset => 'utf-8',
7705                -content_disposition => 'inline; filename="opml.xml"');
7706
7707        my $title = esc_html($site_name);
7708        print <<XML;
7709<?xml version="1.0" encoding="utf-8"?>
7710<opml version="1.0">
7711<head>
7712  <title>$title OPML Export</title>
7713</head>
7714<body>
7715<outline text="git RSS feeds">
7716XML
7717
7718        foreach my $pr (@list) {
7719                my %proj = %$pr;
7720                my $head = git_get_head_hash($proj{'path'});
7721                if (!defined $head) {
7722                        next;
7723                }
7724                $git_dir = "$projectroot/$proj{'path'}";
7725                my %co = parse_commit($head);
7726                if (!%co) {
7727                        next;
7728                }
7729
7730                my $path = esc_html(chop_str($proj{'path'}, 25, 5));
7731                my $rss  = href('project' => $proj{'path'}, 'action' => 'rss', -full => 1);
7732                my $html = href('project' => $proj{'path'}, 'action' => 'summary', -full => 1);
7733                print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
7734        }
7735        print <<XML;
7736</outline>
7737</body>
7738</opml>
7739XML
7740}