gitweb / gitweb.perlon commit Merge branch 'master' of git://git.kernel.org/pub/scm/gitk/gitk (04d70be)
   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 strict;
  11use warnings;
  12use CGI qw(:standard :escapeHTML -nosticky);
  13use CGI::Util qw(unescape);
  14use CGI::Carp qw(fatalsToBrowser);
  15use Encode;
  16use Fcntl ':mode';
  17use File::Find qw();
  18use File::Basename qw(basename);
  19binmode STDOUT, ':utf8';
  20
  21BEGIN {
  22        CGI->compile() if $ENV{'MOD_PERL'};
  23}
  24
  25our $cgi = new CGI;
  26our $version = "++GIT_VERSION++";
  27our $my_url = $cgi->url();
  28our $my_uri = $cgi->url(-absolute => 1);
  29
  30# core git executable to use
  31# this can just be "git" if your webserver has a sensible PATH
  32our $GIT = "++GIT_BINDIR++/git";
  33
  34# absolute fs-path which will be prepended to the project path
  35#our $projectroot = "/pub/scm";
  36our $projectroot = "++GITWEB_PROJECTROOT++";
  37
  38# target of the home link on top of all pages
  39our $home_link = $my_uri || "/";
  40
  41# string of the home link on top of all pages
  42our $home_link_str = "++GITWEB_HOME_LINK_STR++";
  43
  44# name of your site or organization to appear in page titles
  45# replace this with something more descriptive for clearer bookmarks
  46our $site_name = "++GITWEB_SITENAME++"
  47                 || ($ENV{'SERVER_NAME'} || "Untitled") . " Git";
  48
  49# filename of html text to include at top of each page
  50our $site_header = "++GITWEB_SITE_HEADER++";
  51# html text to include at home page
  52our $home_text = "++GITWEB_HOMETEXT++";
  53# filename of html text to include at bottom of each page
  54our $site_footer = "++GITWEB_SITE_FOOTER++";
  55
  56# URI of stylesheets
  57our @stylesheets = ("++GITWEB_CSS++");
  58# URI of a single stylesheet, which can be overridden in GITWEB_CONFIG.
  59our $stylesheet = undef;
  60# URI of GIT logo (72x27 size)
  61our $logo = "++GITWEB_LOGO++";
  62# URI of GIT favicon, assumed to be image/png type
  63our $favicon = "++GITWEB_FAVICON++";
  64
  65# URI and label (title) of GIT logo link
  66#our $logo_url = "http://www.kernel.org/pub/software/scm/git/docs/";
  67#our $logo_label = "git documentation";
  68our $logo_url = "http://git.or.cz/";
  69our $logo_label = "git homepage";
  70
  71# source of projects list
  72our $projects_list = "++GITWEB_LIST++";
  73
  74# the width (in characters) of the projects list "Description" column
  75our $projects_list_description_width = 25;
  76
  77# default order of projects list
  78# valid values are none, project, descr, owner, and age
  79our $default_projects_order = "project";
  80
  81# show repository only if this file exists
  82# (only effective if this variable evaluates to true)
  83our $export_ok = "++GITWEB_EXPORT_OK++";
  84
  85# only allow viewing of repositories also shown on the overview page
  86our $strict_export = "++GITWEB_STRICT_EXPORT++";
  87
  88# list of git base URLs used for URL to where fetch project from,
  89# i.e. full URL is "$git_base_url/$project"
  90our @git_base_url_list = grep { $_ ne '' } ("++GITWEB_BASE_URL++");
  91
  92# default blob_plain mimetype and default charset for text/plain blob
  93our $default_blob_plain_mimetype = 'text/plain';
  94our $default_text_plain_charset  = undef;
  95
  96# file to use for guessing MIME types before trying /etc/mime.types
  97# (relative to the current git repository)
  98our $mimetypes_file = undef;
  99
 100# assume this charset if line contains non-UTF-8 characters;
 101# it should be valid encoding (see Encoding::Supported(3pm) for list),
 102# for which encoding all byte sequences are valid, for example
 103# 'iso-8859-1' aka 'latin1' (it is decoded without checking, so it
 104# could be even 'utf-8' for the old behavior)
 105our $fallback_encoding = 'latin1';
 106
 107# rename detection options for git-diff and git-diff-tree
 108# - default is '-M', with the cost proportional to
 109#   (number of removed files) * (number of new files).
 110# - more costly is '-C' (which implies '-M'), with the cost proportional to
 111#   (number of changed files + number of removed files) * (number of new files)
 112# - even more costly is '-C', '--find-copies-harder' with cost
 113#   (number of files in the original tree) * (number of new files)
 114# - one might want to include '-B' option, e.g. '-B', '-M'
 115our @diff_opts = ('-M'); # taken from git_commit
 116
 117# information about snapshot formats that gitweb is capable of serving
 118our %known_snapshot_formats = (
 119        # name => {
 120        #       'display' => display name,
 121        #       'type' => mime type,
 122        #       'suffix' => filename suffix,
 123        #       'format' => --format for git-archive,
 124        #       'compressor' => [compressor command and arguments]
 125        #                       (array reference, optional)}
 126        #
 127        'tgz' => {
 128                'display' => 'tar.gz',
 129                'type' => 'application/x-gzip',
 130                'suffix' => '.tar.gz',
 131                'format' => 'tar',
 132                'compressor' => ['gzip']},
 133
 134        'tbz2' => {
 135                'display' => 'tar.bz2',
 136                'type' => 'application/x-bzip2',
 137                'suffix' => '.tar.bz2',
 138                'format' => 'tar',
 139                'compressor' => ['bzip2']},
 140
 141        'zip' => {
 142                'display' => 'zip',
 143                'type' => 'application/x-zip',
 144                'suffix' => '.zip',
 145                'format' => 'zip'},
 146);
 147
 148# Aliases so we understand old gitweb.snapshot values in repository
 149# configuration.
 150our %known_snapshot_format_aliases = (
 151        'gzip'  => 'tgz',
 152        'bzip2' => 'tbz2',
 153
 154        # backward compatibility: legacy gitweb config support
 155        'x-gzip' => undef, 'gz' => undef,
 156        'x-bzip2' => undef, 'bz2' => undef,
 157        'x-zip' => undef, '' => undef,
 158);
 159
 160# You define site-wide feature defaults here; override them with
 161# $GITWEB_CONFIG as necessary.
 162our %feature = (
 163        # feature => {
 164        #       'sub' => feature-sub (subroutine),
 165        #       'override' => allow-override (boolean),
 166        #       'default' => [ default options...] (array reference)}
 167        #
 168        # if feature is overridable (it means that allow-override has true value),
 169        # then feature-sub will be called with default options as parameters;
 170        # return value of feature-sub indicates if to enable specified feature
 171        #
 172        # if there is no 'sub' key (no feature-sub), then feature cannot be
 173        # overriden
 174        #
 175        # use gitweb_check_feature(<feature>) to check if <feature> is enabled
 176
 177        # Enable the 'blame' blob view, showing the last commit that modified
 178        # each line in the file. This can be very CPU-intensive.
 179
 180        # To enable system wide have in $GITWEB_CONFIG
 181        # $feature{'blame'}{'default'} = [1];
 182        # To have project specific config enable override in $GITWEB_CONFIG
 183        # $feature{'blame'}{'override'} = 1;
 184        # and in project config gitweb.blame = 0|1;
 185        'blame' => {
 186                'sub' => \&feature_blame,
 187                'override' => 0,
 188                'default' => [0]},
 189
 190        # Enable the 'snapshot' link, providing a compressed archive of any
 191        # tree. This can potentially generate high traffic if you have large
 192        # project.
 193
 194        # Value is a list of formats defined in %known_snapshot_formats that
 195        # you wish to offer.
 196        # To disable system wide have in $GITWEB_CONFIG
 197        # $feature{'snapshot'}{'default'} = [];
 198        # To have project specific config enable override in $GITWEB_CONFIG
 199        # $feature{'snapshot'}{'override'} = 1;
 200        # and in project config, a comma-separated list of formats or "none"
 201        # to disable.  Example: gitweb.snapshot = tbz2,zip;
 202        'snapshot' => {
 203                'sub' => \&feature_snapshot,
 204                'override' => 0,
 205                'default' => ['tgz']},
 206
 207        # Enable text search, which will list the commits which match author,
 208        # committer or commit text to a given string.  Enabled by default.
 209        # Project specific override is not supported.
 210        'search' => {
 211                'override' => 0,
 212                'default' => [1]},
 213
 214        # Enable grep search, which will list the files in currently selected
 215        # tree containing the given string. Enabled by default. This can be
 216        # potentially CPU-intensive, of course.
 217
 218        # To enable system wide have in $GITWEB_CONFIG
 219        # $feature{'grep'}{'default'} = [1];
 220        # To have project specific config enable override in $GITWEB_CONFIG
 221        # $feature{'grep'}{'override'} = 1;
 222        # and in project config gitweb.grep = 0|1;
 223        'grep' => {
 224                'override' => 0,
 225                'default' => [1]},
 226
 227        # Enable the pickaxe search, which will list the commits that modified
 228        # a given string in a file. This can be practical and quite faster
 229        # alternative to 'blame', but still potentially CPU-intensive.
 230
 231        # To enable system wide have in $GITWEB_CONFIG
 232        # $feature{'pickaxe'}{'default'} = [1];
 233        # To have project specific config enable override in $GITWEB_CONFIG
 234        # $feature{'pickaxe'}{'override'} = 1;
 235        # and in project config gitweb.pickaxe = 0|1;
 236        'pickaxe' => {
 237                'sub' => \&feature_pickaxe,
 238                'override' => 0,
 239                'default' => [1]},
 240
 241        # Make gitweb use an alternative format of the URLs which can be
 242        # more readable and natural-looking: project name is embedded
 243        # directly in the path and the query string contains other
 244        # auxiliary information. All gitweb installations recognize
 245        # URL in either format; this configures in which formats gitweb
 246        # generates links.
 247
 248        # To enable system wide have in $GITWEB_CONFIG
 249        # $feature{'pathinfo'}{'default'} = [1];
 250        # Project specific override is not supported.
 251
 252        # Note that you will need to change the default location of CSS,
 253        # favicon, logo and possibly other files to an absolute URL. Also,
 254        # if gitweb.cgi serves as your indexfile, you will need to force
 255        # $my_uri to contain the script name in your $GITWEB_CONFIG.
 256        'pathinfo' => {
 257                'override' => 0,
 258                'default' => [0]},
 259
 260        # Make gitweb consider projects in project root subdirectories
 261        # to be forks of existing projects. Given project $projname.git,
 262        # projects matching $projname/*.git will not be shown in the main
 263        # projects list, instead a '+' mark will be added to $projname
 264        # there and a 'forks' view will be enabled for the project, listing
 265        # all the forks. If project list is taken from a file, forks have
 266        # to be listed after the main project.
 267
 268        # To enable system wide have in $GITWEB_CONFIG
 269        # $feature{'forks'}{'default'} = [1];
 270        # Project specific override is not supported.
 271        'forks' => {
 272                'override' => 0,
 273                'default' => [0]},
 274);
 275
 276sub gitweb_check_feature {
 277        my ($name) = @_;
 278        return unless exists $feature{$name};
 279        my ($sub, $override, @defaults) = (
 280                $feature{$name}{'sub'},
 281                $feature{$name}{'override'},
 282                @{$feature{$name}{'default'}});
 283        if (!$override) { return @defaults; }
 284        if (!defined $sub) {
 285                warn "feature $name is not overrideable";
 286                return @defaults;
 287        }
 288        return $sub->(@defaults);
 289}
 290
 291sub feature_blame {
 292        my ($val) = git_get_project_config('blame', '--bool');
 293
 294        if ($val eq 'true') {
 295                return 1;
 296        } elsif ($val eq 'false') {
 297                return 0;
 298        }
 299
 300        return $_[0];
 301}
 302
 303sub feature_snapshot {
 304        my (@fmts) = @_;
 305
 306        my ($val) = git_get_project_config('snapshot');
 307
 308        if ($val) {
 309                @fmts = ($val eq 'none' ? () : split /\s*[,\s]\s*/, $val);
 310        }
 311
 312        return @fmts;
 313}
 314
 315sub feature_grep {
 316        my ($val) = git_get_project_config('grep', '--bool');
 317
 318        if ($val eq 'true') {
 319                return (1);
 320        } elsif ($val eq 'false') {
 321                return (0);
 322        }
 323
 324        return ($_[0]);
 325}
 326
 327sub feature_pickaxe {
 328        my ($val) = git_get_project_config('pickaxe', '--bool');
 329
 330        if ($val eq 'true') {
 331                return (1);
 332        } elsif ($val eq 'false') {
 333                return (0);
 334        }
 335
 336        return ($_[0]);
 337}
 338
 339# checking HEAD file with -e is fragile if the repository was
 340# initialized long time ago (i.e. symlink HEAD) and was pack-ref'ed
 341# and then pruned.
 342sub check_head_link {
 343        my ($dir) = @_;
 344        my $headfile = "$dir/HEAD";
 345        return ((-e $headfile) ||
 346                (-l $headfile && readlink($headfile) =~ /^refs\/heads\//));
 347}
 348
 349sub check_export_ok {
 350        my ($dir) = @_;
 351        return (check_head_link($dir) &&
 352                (!$export_ok || -e "$dir/$export_ok"));
 353}
 354
 355# process alternate names for backward compatibility
 356# filter out unsupported (unknown) snapshot formats
 357sub filter_snapshot_fmts {
 358        my @fmts = @_;
 359
 360        @fmts = map {
 361                exists $known_snapshot_format_aliases{$_} ?
 362                       $known_snapshot_format_aliases{$_} : $_} @fmts;
 363        @fmts = grep(exists $known_snapshot_formats{$_}, @fmts);
 364
 365}
 366
 367our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 368do $GITWEB_CONFIG if -e $GITWEB_CONFIG;
 369
 370# version of the core git binary
 371our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 372
 373$projects_list ||= $projectroot;
 374
 375# ======================================================================
 376# input validation and dispatch
 377our $action = $cgi->param('a');
 378if (defined $action) {
 379        if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 380                die_error(undef, "Invalid action parameter");
 381        }
 382}
 383
 384# parameters which are pathnames
 385our $project = $cgi->param('p');
 386if (defined $project) {
 387        if (!validate_pathname($project) ||
 388            !(-d "$projectroot/$project") ||
 389            !check_head_link("$projectroot/$project") ||
 390            ($export_ok && !(-e "$projectroot/$project/$export_ok")) ||
 391            ($strict_export && !project_in_list($project))) {
 392                undef $project;
 393                die_error(undef, "No such project");
 394        }
 395}
 396
 397our $file_name = $cgi->param('f');
 398if (defined $file_name) {
 399        if (!validate_pathname($file_name)) {
 400                die_error(undef, "Invalid file parameter");
 401        }
 402}
 403
 404our $file_parent = $cgi->param('fp');
 405if (defined $file_parent) {
 406        if (!validate_pathname($file_parent)) {
 407                die_error(undef, "Invalid file parent parameter");
 408        }
 409}
 410
 411# parameters which are refnames
 412our $hash = $cgi->param('h');
 413if (defined $hash) {
 414        if (!validate_refname($hash)) {
 415                die_error(undef, "Invalid hash parameter");
 416        }
 417}
 418
 419our $hash_parent = $cgi->param('hp');
 420if (defined $hash_parent) {
 421        if (!validate_refname($hash_parent)) {
 422                die_error(undef, "Invalid hash parent parameter");
 423        }
 424}
 425
 426our $hash_base = $cgi->param('hb');
 427if (defined $hash_base) {
 428        if (!validate_refname($hash_base)) {
 429                die_error(undef, "Invalid hash base parameter");
 430        }
 431}
 432
 433my %allowed_options = (
 434        "--no-merges" => [ qw(rss atom log shortlog history) ],
 435);
 436
 437our @extra_options = $cgi->param('opt');
 438if (defined @extra_options) {
 439        foreach my $opt (@extra_options) {
 440                if (not exists $allowed_options{$opt}) {
 441                        die_error(undef, "Invalid option parameter");
 442                }
 443                if (not grep(/^$action$/, @{$allowed_options{$opt}})) {
 444                        die_error(undef, "Invalid option parameter for this action");
 445                }
 446        }
 447}
 448
 449our $hash_parent_base = $cgi->param('hpb');
 450if (defined $hash_parent_base) {
 451        if (!validate_refname($hash_parent_base)) {
 452                die_error(undef, "Invalid hash parent base parameter");
 453        }
 454}
 455
 456# other parameters
 457our $page = $cgi->param('pg');
 458if (defined $page) {
 459        if ($page =~ m/[^0-9]/) {
 460                die_error(undef, "Invalid page parameter");
 461        }
 462}
 463
 464our $searchtype = $cgi->param('st');
 465if (defined $searchtype) {
 466        if ($searchtype =~ m/[^a-z]/) {
 467                die_error(undef, "Invalid searchtype parameter");
 468        }
 469}
 470
 471our $searchtext = $cgi->param('s');
 472our $search_regexp;
 473if (defined $searchtext) {
 474        if ($searchtype ne 'grep' and $searchtype ne 'pickaxe' and $searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 475                die_error(undef, "Invalid search parameter");
 476        }
 477        if (length($searchtext) < 2) {
 478                die_error(undef, "At least two characters are required for search parameter");
 479        }
 480        $search_regexp = quotemeta $searchtext;
 481}
 482
 483# now read PATH_INFO and use it as alternative to parameters
 484sub evaluate_path_info {
 485        return if defined $project;
 486        my $path_info = $ENV{"PATH_INFO"};
 487        return if !$path_info;
 488        $path_info =~ s,^/+,,;
 489        return if !$path_info;
 490        # find which part of PATH_INFO is project
 491        $project = $path_info;
 492        $project =~ s,/+$,,;
 493        while ($project && !check_head_link("$projectroot/$project")) {
 494                $project =~ s,/*[^/]*$,,;
 495        }
 496        # validate project
 497        $project = validate_pathname($project);
 498        if (!$project ||
 499            ($export_ok && !-e "$projectroot/$project/$export_ok") ||
 500            ($strict_export && !project_in_list($project))) {
 501                undef $project;
 502                return;
 503        }
 504        # do not change any parameters if an action is given using the query string
 505        return if $action;
 506        $path_info =~ s,^$project/*,,;
 507        my ($refname, $pathname) = split(/:/, $path_info, 2);
 508        if (defined $pathname) {
 509                # we got "project.git/branch:filename" or "project.git/branch:dir/"
 510                # we could use git_get_type(branch:pathname), but it needs $git_dir
 511                $pathname =~ s,^/+,,;
 512                if (!$pathname || substr($pathname, -1) eq "/") {
 513                        $action  ||= "tree";
 514                        $pathname =~ s,/$,,;
 515                } else {
 516                        $action  ||= "blob_plain";
 517                }
 518                $hash_base ||= validate_refname($refname);
 519                $file_name ||= validate_pathname($pathname);
 520        } elsif (defined $refname) {
 521                # we got "project.git/branch"
 522                $action ||= "shortlog";
 523                $hash   ||= validate_refname($refname);
 524        }
 525}
 526evaluate_path_info();
 527
 528# path to the current git repository
 529our $git_dir;
 530$git_dir = "$projectroot/$project" if $project;
 531
 532# dispatch
 533my %actions = (
 534        "blame" => \&git_blame2,
 535        "blobdiff" => \&git_blobdiff,
 536        "blobdiff_plain" => \&git_blobdiff_plain,
 537        "blob" => \&git_blob,
 538        "blob_plain" => \&git_blob_plain,
 539        "commitdiff" => \&git_commitdiff,
 540        "commitdiff_plain" => \&git_commitdiff_plain,
 541        "commit" => \&git_commit,
 542        "forks" => \&git_forks,
 543        "heads" => \&git_heads,
 544        "history" => \&git_history,
 545        "log" => \&git_log,
 546        "rss" => \&git_rss,
 547        "atom" => \&git_atom,
 548        "search" => \&git_search,
 549        "search_help" => \&git_search_help,
 550        "shortlog" => \&git_shortlog,
 551        "summary" => \&git_summary,
 552        "tag" => \&git_tag,
 553        "tags" => \&git_tags,
 554        "tree" => \&git_tree,
 555        "snapshot" => \&git_snapshot,
 556        "object" => \&git_object,
 557        # those below don't need $project
 558        "opml" => \&git_opml,
 559        "project_list" => \&git_project_list,
 560        "project_index" => \&git_project_index,
 561);
 562
 563if (!defined $action) {
 564        if (defined $hash) {
 565                $action = git_get_type($hash);
 566        } elsif (defined $hash_base && defined $file_name) {
 567                $action = git_get_type("$hash_base:$file_name");
 568        } elsif (defined $project) {
 569                $action = 'summary';
 570        } else {
 571                $action = 'project_list';
 572        }
 573}
 574if (!defined($actions{$action})) {
 575        die_error(undef, "Unknown action");
 576}
 577if ($action !~ m/^(opml|project_list|project_index)$/ &&
 578    !$project) {
 579        die_error(undef, "Project needed");
 580}
 581$actions{$action}->();
 582exit;
 583
 584## ======================================================================
 585## action links
 586
 587sub href(%) {
 588        my %params = @_;
 589        # default is to use -absolute url() i.e. $my_uri
 590        my $href = $params{-full} ? $my_url : $my_uri;
 591
 592        # XXX: Warning: If you touch this, check the search form for updating,
 593        # too.
 594
 595        my @mapping = (
 596                project => "p",
 597                action => "a",
 598                file_name => "f",
 599                file_parent => "fp",
 600                hash => "h",
 601                hash_parent => "hp",
 602                hash_base => "hb",
 603                hash_parent_base => "hpb",
 604                page => "pg",
 605                order => "o",
 606                searchtext => "s",
 607                searchtype => "st",
 608                snapshot_format => "sf",
 609                extra_options => "opt",
 610        );
 611        my %mapping = @mapping;
 612
 613        $params{'project'} = $project unless exists $params{'project'};
 614
 615        my ($use_pathinfo) = gitweb_check_feature('pathinfo');
 616        if ($use_pathinfo) {
 617                # use PATH_INFO for project name
 618                $href .= "/$params{'project'}" if defined $params{'project'};
 619                delete $params{'project'};
 620
 621                # Summary just uses the project path URL
 622                if (defined $params{'action'} && $params{'action'} eq 'summary') {
 623                        delete $params{'action'};
 624                }
 625        }
 626
 627        # now encode the parameters explicitly
 628        my @result = ();
 629        for (my $i = 0; $i < @mapping; $i += 2) {
 630                my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 631                if (defined $params{$name}) {
 632                        if (ref($params{$name}) eq "ARRAY") {
 633                                foreach my $par (@{$params{$name}}) {
 634                                        push @result, $symbol . "=" . esc_param($par);
 635                                }
 636                        } else {
 637                                push @result, $symbol . "=" . esc_param($params{$name});
 638                        }
 639                }
 640        }
 641        $href .= "?" . join(';', @result) if scalar @result;
 642
 643        return $href;
 644}
 645
 646
 647## ======================================================================
 648## validation, quoting/unquoting and escaping
 649
 650sub validate_pathname {
 651        my $input = shift || return undef;
 652
 653        # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 654        # at the beginning, at the end, and between slashes.
 655        # also this catches doubled slashes
 656        if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 657                return undef;
 658        }
 659        # no null characters
 660        if ($input =~ m!\0!) {
 661                return undef;
 662        }
 663        return $input;
 664}
 665
 666sub validate_refname {
 667        my $input = shift || return undef;
 668
 669        # textual hashes are O.K.
 670        if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 671                return $input;
 672        }
 673        # it must be correct pathname
 674        $input = validate_pathname($input)
 675                or return undef;
 676        # restrictions on ref name according to git-check-ref-format
 677        if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 678                return undef;
 679        }
 680        return $input;
 681}
 682
 683# decode sequences of octets in utf8 into Perl's internal form,
 684# which is utf-8 with utf8 flag set if needed.  gitweb writes out
 685# in utf-8 thanks to "binmode STDOUT, ':utf8'" at beginning
 686sub to_utf8 {
 687        my $str = shift;
 688        my $res;
 689        eval { $res = decode_utf8($str, Encode::FB_CROAK); };
 690        if (defined $res) {
 691                return $res;
 692        } else {
 693                return decode($fallback_encoding, $str, Encode::FB_DEFAULT);
 694        }
 695}
 696
 697# quote unsafe chars, but keep the slash, even when it's not
 698# correct, but quoted slashes look too horrible in bookmarks
 699sub esc_param {
 700        my $str = shift;
 701        $str =~ s/([^A-Za-z0-9\-_.~()\/:@])/sprintf("%%%02X", ord($1))/eg;
 702        $str =~ s/\+/%2B/g;
 703        $str =~ s/ /\+/g;
 704        return $str;
 705}
 706
 707# quote unsafe chars in whole URL, so some charactrs cannot be quoted
 708sub esc_url {
 709        my $str = shift;
 710        $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 711        $str =~ s/\+/%2B/g;
 712        $str =~ s/ /\+/g;
 713        return $str;
 714}
 715
 716# replace invalid utf8 character with SUBSTITUTION sequence
 717sub esc_html ($;%) {
 718        my $str = shift;
 719        my %opts = @_;
 720
 721        $str = to_utf8($str);
 722        $str = $cgi->escapeHTML($str);
 723        if ($opts{'-nbsp'}) {
 724                $str =~ s/ /&nbsp;/g;
 725        }
 726        $str =~ s|([[:cntrl:]])|(($1 ne "\t") ? quot_cec($1) : $1)|eg;
 727        return $str;
 728}
 729
 730# quote control characters and escape filename to HTML
 731sub esc_path {
 732        my $str = shift;
 733        my %opts = @_;
 734
 735        $str = to_utf8($str);
 736        $str = $cgi->escapeHTML($str);
 737        if ($opts{'-nbsp'}) {
 738                $str =~ s/ /&nbsp;/g;
 739        }
 740        $str =~ s|([[:cntrl:]])|quot_cec($1)|eg;
 741        return $str;
 742}
 743
 744# Make control characters "printable", using character escape codes (CEC)
 745sub quot_cec {
 746        my $cntrl = shift;
 747        my %es = ( # character escape codes, aka escape sequences
 748                   "\t" => '\t',   # tab            (HT)
 749                   "\n" => '\n',   # line feed      (LF)
 750                   "\r" => '\r',   # carrige return (CR)
 751                   "\f" => '\f',   # form feed      (FF)
 752                   "\b" => '\b',   # backspace      (BS)
 753                   "\a" => '\a',   # alarm (bell)   (BEL)
 754                   "\e" => '\e',   # escape         (ESC)
 755                   "\013" => '\v', # vertical tab   (VT)
 756                   "\000" => '\0', # nul character  (NUL)
 757                   );
 758        my $chr = ( (exists $es{$cntrl})
 759                    ? $es{$cntrl}
 760                    : sprintf('\%03o', ord($cntrl)) );
 761        return "<span class=\"cntrl\">$chr</span>";
 762}
 763
 764# Alternatively use unicode control pictures codepoints,
 765# Unicode "printable representation" (PR)
 766sub quot_upr {
 767        my $cntrl = shift;
 768        my $chr = sprintf('&#%04d;', 0x2400+ord($cntrl));
 769        return "<span class=\"cntrl\">$chr</span>";
 770}
 771
 772# git may return quoted and escaped filenames
 773sub unquote {
 774        my $str = shift;
 775
 776        sub unq {
 777                my $seq = shift;
 778                my %es = ( # character escape codes, aka escape sequences
 779                        't' => "\t",   # tab            (HT, TAB)
 780                        'n' => "\n",   # newline        (NL)
 781                        'r' => "\r",   # return         (CR)
 782                        'f' => "\f",   # form feed      (FF)
 783                        'b' => "\b",   # backspace      (BS)
 784                        'a' => "\a",   # alarm (bell)   (BEL)
 785                        'e' => "\e",   # escape         (ESC)
 786                        'v' => "\013", # vertical tab   (VT)
 787                );
 788
 789                if ($seq =~ m/^[0-7]{1,3}$/) {
 790                        # octal char sequence
 791                        return chr(oct($seq));
 792                } elsif (exists $es{$seq}) {
 793                        # C escape sequence, aka character escape code
 794                        return $es{$seq}
 795                }
 796                # quoted ordinary character
 797                return $seq;
 798        }
 799
 800        if ($str =~ m/^"(.*)"$/) {
 801                # needs unquoting
 802                $str = $1;
 803                $str =~ s/\\([^0-7]|[0-7]{1,3})/unq($1)/eg;
 804        }
 805        return $str;
 806}
 807
 808# escape tabs (convert tabs to spaces)
 809sub untabify {
 810        my $line = shift;
 811
 812        while ((my $pos = index($line, "\t")) != -1) {
 813                if (my $count = (8 - ($pos % 8))) {
 814                        my $spaces = ' ' x $count;
 815                        $line =~ s/\t/$spaces/;
 816                }
 817        }
 818
 819        return $line;
 820}
 821
 822sub project_in_list {
 823        my $project = shift;
 824        my @list = git_get_projects_list();
 825        return @list && scalar(grep { $_->{'path'} eq $project } @list);
 826}
 827
 828## ----------------------------------------------------------------------
 829## HTML aware string manipulation
 830
 831sub chop_str {
 832        my $str = shift;
 833        my $len = shift;
 834        my $add_len = shift || 10;
 835
 836        # allow only $len chars, but don't cut a word if it would fit in $add_len
 837        # if it doesn't fit, cut it if it's still longer than the dots we would add
 838        $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 839        my $body = $1;
 840        my $tail = $2;
 841        if (length($tail) > 4) {
 842                $tail = " ...";
 843                $body =~ s/&[^;]*$//; # remove chopped character entities
 844        }
 845        return "$body$tail";
 846}
 847
 848## ----------------------------------------------------------------------
 849## functions returning short strings
 850
 851# CSS class for given age value (in seconds)
 852sub age_class {
 853        my $age = shift;
 854
 855        if (!defined $age) {
 856                return "noage";
 857        } elsif ($age < 60*60*2) {
 858                return "age0";
 859        } elsif ($age < 60*60*24*2) {
 860                return "age1";
 861        } else {
 862                return "age2";
 863        }
 864}
 865
 866# convert age in seconds to "nn units ago" string
 867sub age_string {
 868        my $age = shift;
 869        my $age_str;
 870
 871        if ($age > 60*60*24*365*2) {
 872                $age_str = (int $age/60/60/24/365);
 873                $age_str .= " years ago";
 874        } elsif ($age > 60*60*24*(365/12)*2) {
 875                $age_str = int $age/60/60/24/(365/12);
 876                $age_str .= " months ago";
 877        } elsif ($age > 60*60*24*7*2) {
 878                $age_str = int $age/60/60/24/7;
 879                $age_str .= " weeks ago";
 880        } elsif ($age > 60*60*24*2) {
 881                $age_str = int $age/60/60/24;
 882                $age_str .= " days ago";
 883        } elsif ($age > 60*60*2) {
 884                $age_str = int $age/60/60;
 885                $age_str .= " hours ago";
 886        } elsif ($age > 60*2) {
 887                $age_str = int $age/60;
 888                $age_str .= " min ago";
 889        } elsif ($age > 2) {
 890                $age_str = int $age;
 891                $age_str .= " sec ago";
 892        } else {
 893                $age_str .= " right now";
 894        }
 895        return $age_str;
 896}
 897
 898use constant {
 899        S_IFINVALID => 0030000,
 900        S_IFGITLINK => 0160000,
 901};
 902
 903# submodule/subproject, a commit object reference
 904sub S_ISGITLINK($) {
 905        my $mode = shift;
 906
 907        return (($mode & S_IFMT) == S_IFGITLINK)
 908}
 909
 910# convert file mode in octal to symbolic file mode string
 911sub mode_str {
 912        my $mode = oct shift;
 913
 914        if (S_ISGITLINK($mode)) {
 915                return 'm---------';
 916        } elsif (S_ISDIR($mode & S_IFMT)) {
 917                return 'drwxr-xr-x';
 918        } elsif (S_ISLNK($mode)) {
 919                return 'lrwxrwxrwx';
 920        } elsif (S_ISREG($mode)) {
 921                # git cares only about the executable bit
 922                if ($mode & S_IXUSR) {
 923                        return '-rwxr-xr-x';
 924                } else {
 925                        return '-rw-r--r--';
 926                };
 927        } else {
 928                return '----------';
 929        }
 930}
 931
 932# convert file mode in octal to file type string
 933sub file_type {
 934        my $mode = shift;
 935
 936        if ($mode !~ m/^[0-7]+$/) {
 937                return $mode;
 938        } else {
 939                $mode = oct $mode;
 940        }
 941
 942        if (S_ISGITLINK($mode)) {
 943                return "submodule";
 944        } elsif (S_ISDIR($mode & S_IFMT)) {
 945                return "directory";
 946        } elsif (S_ISLNK($mode)) {
 947                return "symlink";
 948        } elsif (S_ISREG($mode)) {
 949                return "file";
 950        } else {
 951                return "unknown";
 952        }
 953}
 954
 955# convert file mode in octal to file type description string
 956sub file_type_long {
 957        my $mode = shift;
 958
 959        if ($mode !~ m/^[0-7]+$/) {
 960                return $mode;
 961        } else {
 962                $mode = oct $mode;
 963        }
 964
 965        if (S_ISGITLINK($mode)) {
 966                return "submodule";
 967        } elsif (S_ISDIR($mode & S_IFMT)) {
 968                return "directory";
 969        } elsif (S_ISLNK($mode)) {
 970                return "symlink";
 971        } elsif (S_ISREG($mode)) {
 972                if ($mode & S_IXUSR) {
 973                        return "executable";
 974                } else {
 975                        return "file";
 976                };
 977        } else {
 978                return "unknown";
 979        }
 980}
 981
 982
 983## ----------------------------------------------------------------------
 984## functions returning short HTML fragments, or transforming HTML fragments
 985## which don't belong to other sections
 986
 987# format line of commit message.
 988sub format_log_line_html {
 989        my $line = shift;
 990
 991        $line = esc_html($line, -nbsp=>1);
 992        if ($line =~ m/([0-9a-fA-F]{8,40})/) {
 993                my $hash_text = $1;
 994                my $link =
 995                        $cgi->a({-href => href(action=>"object", hash=>$hash_text),
 996                                -class => "text"}, $hash_text);
 997                $line =~ s/$hash_text/$link/;
 998        }
 999        return $line;
1000}
1001
1002# format marker of refs pointing to given object
1003sub format_ref_marker {
1004        my ($refs, $id) = @_;
1005        my $markers = '';
1006
1007        if (defined $refs->{$id}) {
1008                foreach my $ref (@{$refs->{$id}}) {
1009                        my ($type, $name) = qw();
1010                        # e.g. tags/v2.6.11 or heads/next
1011                        if ($ref =~ m!^(.*?)s?/(.*)$!) {
1012                                $type = $1;
1013                                $name = $2;
1014                        } else {
1015                                $type = "ref";
1016                                $name = $ref;
1017                        }
1018
1019                        $markers .= " <span class=\"$type\" title=\"$ref\">" .
1020                                    esc_html($name) . "</span>";
1021                }
1022        }
1023
1024        if ($markers) {
1025                return ' <span class="refs">'. $markers . '</span>';
1026        } else {
1027                return "";
1028        }
1029}
1030
1031# format, perhaps shortened and with markers, title line
1032sub format_subject_html {
1033        my ($long, $short, $href, $extra) = @_;
1034        $extra = '' unless defined($extra);
1035
1036        if (length($short) < length($long)) {
1037                return $cgi->a({-href => $href, -class => "list subject",
1038                                -title => to_utf8($long)},
1039                       esc_html($short) . $extra);
1040        } else {
1041                return $cgi->a({-href => $href, -class => "list subject"},
1042                       esc_html($long)  . $extra);
1043        }
1044}
1045
1046# format git diff header line, i.e. "diff --(git|combined|cc) ..."
1047sub format_git_diff_header_line {
1048        my $line = shift;
1049        my $diffinfo = shift;
1050        my ($from, $to) = @_;
1051
1052        if ($diffinfo->{'nparents'}) {
1053                # combined diff
1054                $line =~ s!^(diff (.*?) )"?.*$!$1!;
1055                if ($to->{'href'}) {
1056                        $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
1057                                         esc_path($to->{'file'}));
1058                } else { # file was deleted (no href)
1059                        $line .= esc_path($to->{'file'});
1060                }
1061        } else {
1062                # "ordinary" diff
1063                $line =~ s!^(diff (.*?) )"?a/.*$!$1!;
1064                if ($from->{'href'}) {
1065                        $line .= $cgi->a({-href => $from->{'href'}, -class => "path"},
1066                                         'a/' . esc_path($from->{'file'}));
1067                } else { # file was added (no href)
1068                        $line .= 'a/' . esc_path($from->{'file'});
1069                }
1070                $line .= ' ';
1071                if ($to->{'href'}) {
1072                        $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
1073                                         'b/' . esc_path($to->{'file'}));
1074                } else { # file was deleted
1075                        $line .= 'b/' . esc_path($to->{'file'});
1076                }
1077        }
1078
1079        return "<div class=\"diff header\">$line</div>\n";
1080}
1081
1082# format extended diff header line, before patch itself
1083sub format_extended_diff_header_line {
1084        my $line = shift;
1085        my $diffinfo = shift;
1086        my ($from, $to) = @_;
1087
1088        # match <path>
1089        if ($line =~ s!^((copy|rename) from ).*$!$1! && $from->{'href'}) {
1090                $line .= $cgi->a({-href=>$from->{'href'}, -class=>"path"},
1091                                       esc_path($from->{'file'}));
1092        }
1093        if ($line =~ s!^((copy|rename) to ).*$!$1! && $to->{'href'}) {
1094                $line .= $cgi->a({-href=>$to->{'href'}, -class=>"path"},
1095                                 esc_path($to->{'file'}));
1096        }
1097        # match single <mode>
1098        if ($line =~ m/\s(\d{6})$/) {
1099                $line .= '<span class="info"> (' .
1100                         file_type_long($1) .
1101                         ')</span>';
1102        }
1103        # match <hash>
1104        if ($line =~ m/^index [0-9a-fA-F]{40},[0-9a-fA-F]{40}/) {
1105                # can match only for combined diff
1106                $line = 'index ';
1107                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
1108                        if ($from->{'href'}[$i]) {
1109                                $line .= $cgi->a({-href=>$from->{'href'}[$i],
1110                                                  -class=>"hash"},
1111                                                 substr($diffinfo->{'from_id'}[$i],0,7));
1112                        } else {
1113                                $line .= '0' x 7;
1114                        }
1115                        # separator
1116                        $line .= ',' if ($i < $diffinfo->{'nparents'} - 1);
1117                }
1118                $line .= '..';
1119                if ($to->{'href'}) {
1120                        $line .= $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
1121                                         substr($diffinfo->{'to_id'},0,7));
1122                } else {
1123                        $line .= '0' x 7;
1124                }
1125
1126        } elsif ($line =~ m/^index [0-9a-fA-F]{40}..[0-9a-fA-F]{40}/) {
1127                # can match only for ordinary diff
1128                my ($from_link, $to_link);
1129                if ($from->{'href'}) {
1130                        $from_link = $cgi->a({-href=>$from->{'href'}, -class=>"hash"},
1131                                             substr($diffinfo->{'from_id'},0,7));
1132                } else {
1133                        $from_link = '0' x 7;
1134                }
1135                if ($to->{'href'}) {
1136                        $to_link = $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
1137                                           substr($diffinfo->{'to_id'},0,7));
1138                } else {
1139                        $to_link = '0' x 7;
1140                }
1141                my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
1142                $line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
1143        }
1144
1145        return $line . "<br/>\n";
1146}
1147
1148# format from-file/to-file diff header
1149sub format_diff_from_to_header {
1150        my ($from_line, $to_line, $diffinfo, $from, $to, @parents) = @_;
1151        my $line;
1152        my $result = '';
1153
1154        $line = $from_line;
1155        #assert($line =~ m/^---/) if DEBUG;
1156        # no extra formatting for "^--- /dev/null"
1157        if (! $diffinfo->{'nparents'}) {
1158                # ordinary (single parent) diff
1159                if ($line =~ m!^--- "?a/!) {
1160                        if ($from->{'href'}) {
1161                                $line = '--- a/' .
1162                                        $cgi->a({-href=>$from->{'href'}, -class=>"path"},
1163                                                esc_path($from->{'file'}));
1164                        } else {
1165                                $line = '--- a/' .
1166                                        esc_path($from->{'file'});
1167                        }
1168                }
1169                $result .= qq!<div class="diff from_file">$line</div>\n!;
1170
1171        } else {
1172                # combined diff (merge commit)
1173                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
1174                        if ($from->{'href'}[$i]) {
1175                                $line = '--- ' .
1176                                        $cgi->a({-href=>href(action=>"blobdiff",
1177                                                             hash_parent=>$diffinfo->{'from_id'}[$i],
1178                                                             hash_parent_base=>$parents[$i],
1179                                                             file_parent=>$from->{'file'}[$i],
1180                                                             hash=>$diffinfo->{'to_id'},
1181                                                             hash_base=>$hash,
1182                                                             file_name=>$to->{'file'}),
1183                                                 -class=>"path",
1184                                                 -title=>"diff" . ($i+1)},
1185                                                $i+1) .
1186                                        '/' .
1187                                        $cgi->a({-href=>$from->{'href'}[$i], -class=>"path"},
1188                                                esc_path($from->{'file'}[$i]));
1189                        } else {
1190                                $line = '--- /dev/null';
1191                        }
1192                        $result .= qq!<div class="diff from_file">$line</div>\n!;
1193                }
1194        }
1195
1196        $line = $to_line;
1197        #assert($line =~ m/^\+\+\+/) if DEBUG;
1198        # no extra formatting for "^+++ /dev/null"
1199        if ($line =~ m!^\+\+\+ "?b/!) {
1200                if ($to->{'href'}) {
1201                        $line = '+++ b/' .
1202                                $cgi->a({-href=>$to->{'href'}, -class=>"path"},
1203                                        esc_path($to->{'file'}));
1204                } else {
1205                        $line = '+++ b/' .
1206                                esc_path($to->{'file'});
1207                }
1208        }
1209        $result .= qq!<div class="diff to_file">$line</div>\n!;
1210
1211        return $result;
1212}
1213
1214# create note for patch simplified by combined diff
1215sub format_diff_cc_simplified {
1216        my ($diffinfo, @parents) = @_;
1217        my $result = '';
1218
1219        $result .= "<div class=\"diff header\">" .
1220                   "diff --cc ";
1221        if (!is_deleted($diffinfo)) {
1222                $result .= $cgi->a({-href => href(action=>"blob",
1223                                                  hash_base=>$hash,
1224                                                  hash=>$diffinfo->{'to_id'},
1225                                                  file_name=>$diffinfo->{'to_file'}),
1226                                    -class => "path"},
1227                                   esc_path($diffinfo->{'to_file'}));
1228        } else {
1229                $result .= esc_path($diffinfo->{'to_file'});
1230        }
1231        $result .= "</div>\n" . # class="diff header"
1232                   "<div class=\"diff nodifferences\">" .
1233                   "Simple merge" .
1234                   "</div>\n"; # class="diff nodifferences"
1235
1236        return $result;
1237}
1238
1239# format patch (diff) line (not to be used for diff headers)
1240sub format_diff_line {
1241        my $line = shift;
1242        my ($from, $to) = @_;
1243        my $diff_class = "";
1244
1245        chomp $line;
1246
1247        if ($from && $to && ref($from->{'href'}) eq "ARRAY") {
1248                # combined diff
1249                my $prefix = substr($line, 0, scalar @{$from->{'href'}});
1250                if ($line =~ m/^\@{3}/) {
1251                        $diff_class = " chunk_header";
1252                } elsif ($line =~ m/^\\/) {
1253                        $diff_class = " incomplete";
1254                } elsif ($prefix =~ tr/+/+/) {
1255                        $diff_class = " add";
1256                } elsif ($prefix =~ tr/-/-/) {
1257                        $diff_class = " rem";
1258                }
1259        } else {
1260                # assume ordinary diff
1261                my $char = substr($line, 0, 1);
1262                if ($char eq '+') {
1263                        $diff_class = " add";
1264                } elsif ($char eq '-') {
1265                        $diff_class = " rem";
1266                } elsif ($char eq '@') {
1267                        $diff_class = " chunk_header";
1268                } elsif ($char eq "\\") {
1269                        $diff_class = " incomplete";
1270                }
1271        }
1272        $line = untabify($line);
1273        if ($from && $to && $line =~ m/^\@{2} /) {
1274                my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
1275                        $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
1276
1277                $from_lines = 0 unless defined $from_lines;
1278                $to_lines   = 0 unless defined $to_lines;
1279
1280                if ($from->{'href'}) {
1281                        $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
1282                                             -class=>"list"}, $from_text);
1283                }
1284                if ($to->{'href'}) {
1285                        $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
1286                                             -class=>"list"}, $to_text);
1287                }
1288                $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
1289                        "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
1290                return "<div class=\"diff$diff_class\">$line</div>\n";
1291        } elsif ($from && $to && $line =~ m/^\@{3}/) {
1292                my ($prefix, $ranges, $section) = $line =~ m/^(\@+) (.*?) \@+(.*)$/;
1293                my (@from_text, @from_start, @from_nlines, $to_text, $to_start, $to_nlines);
1294
1295                @from_text = split(' ', $ranges);
1296                for (my $i = 0; $i < @from_text; ++$i) {
1297                        ($from_start[$i], $from_nlines[$i]) =
1298                                (split(',', substr($from_text[$i], 1)), 0);
1299                }
1300
1301                $to_text   = pop @from_text;
1302                $to_start  = pop @from_start;
1303                $to_nlines = pop @from_nlines;
1304
1305                $line = "<span class=\"chunk_info\">$prefix ";
1306                for (my $i = 0; $i < @from_text; ++$i) {
1307                        if ($from->{'href'}[$i]) {
1308                                $line .= $cgi->a({-href=>"$from->{'href'}[$i]#l$from_start[$i]",
1309                                                  -class=>"list"}, $from_text[$i]);
1310                        } else {
1311                                $line .= $from_text[$i];
1312                        }
1313                        $line .= " ";
1314                }
1315                if ($to->{'href'}) {
1316                        $line .= $cgi->a({-href=>"$to->{'href'}#l$to_start",
1317                                          -class=>"list"}, $to_text);
1318                } else {
1319                        $line .= $to_text;
1320                }
1321                $line .= " $prefix</span>" .
1322                         "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
1323                return "<div class=\"diff$diff_class\">$line</div>\n";
1324        }
1325        return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
1326}
1327
1328# Generates undef or something like "_snapshot_" or "snapshot (_tbz2_ _zip_)",
1329# linked.  Pass the hash of the tree/commit to snapshot.
1330sub format_snapshot_links {
1331        my ($hash) = @_;
1332        my @snapshot_fmts = gitweb_check_feature('snapshot');
1333        @snapshot_fmts = filter_snapshot_fmts(@snapshot_fmts);
1334        my $num_fmts = @snapshot_fmts;
1335        if ($num_fmts > 1) {
1336                # A parenthesized list of links bearing format names.
1337                # e.g. "snapshot (_tar.gz_ _zip_)"
1338                return "snapshot (" . join(' ', map
1339                        $cgi->a({
1340                                -href => href(
1341                                        action=>"snapshot",
1342                                        hash=>$hash,
1343                                        snapshot_format=>$_
1344                                )
1345                        }, $known_snapshot_formats{$_}{'display'})
1346                , @snapshot_fmts) . ")";
1347        } elsif ($num_fmts == 1) {
1348                # A single "snapshot" link whose tooltip bears the format name.
1349                # i.e. "_snapshot_"
1350                my ($fmt) = @snapshot_fmts;
1351                return
1352                        $cgi->a({
1353                                -href => href(
1354                                        action=>"snapshot",
1355                                        hash=>$hash,
1356                                        snapshot_format=>$fmt
1357                                ),
1358                                -title => "in format: $known_snapshot_formats{$fmt}{'display'}"
1359                        }, "snapshot");
1360        } else { # $num_fmts == 0
1361                return undef;
1362        }
1363}
1364
1365## ----------------------------------------------------------------------
1366## git utility subroutines, invoking git commands
1367
1368# returns path to the core git executable and the --git-dir parameter as list
1369sub git_cmd {
1370        return $GIT, '--git-dir='.$git_dir;
1371}
1372
1373# returns path to the core git executable and the --git-dir parameter as string
1374sub git_cmd_str {
1375        return join(' ', git_cmd());
1376}
1377
1378# get HEAD ref of given project as hash
1379sub git_get_head_hash {
1380        my $project = shift;
1381        my $o_git_dir = $git_dir;
1382        my $retval = undef;
1383        $git_dir = "$projectroot/$project";
1384        if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
1385                my $head = <$fd>;
1386                close $fd;
1387                if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
1388                        $retval = $1;
1389                }
1390        }
1391        if (defined $o_git_dir) {
1392                $git_dir = $o_git_dir;
1393        }
1394        return $retval;
1395}
1396
1397# get type of given object
1398sub git_get_type {
1399        my $hash = shift;
1400
1401        open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
1402        my $type = <$fd>;
1403        close $fd or return;
1404        chomp $type;
1405        return $type;
1406}
1407
1408sub git_get_project_config {
1409        my ($key, $type) = @_;
1410
1411        return unless ($key);
1412        $key =~ s/^gitweb\.//;
1413        return if ($key =~ m/\W/);
1414
1415        my @x = (git_cmd(), 'config');
1416        if (defined $type) { push @x, $type; }
1417        push @x, "--get";
1418        push @x, "gitweb.$key";
1419        my $val = qx(@x);
1420        chomp $val;
1421        return ($val);
1422}
1423
1424# get hash of given path at given ref
1425sub git_get_hash_by_path {
1426        my $base = shift;
1427        my $path = shift || return undef;
1428        my $type = shift;
1429
1430        $path =~ s,/+$,,;
1431
1432        open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
1433                or die_error(undef, "Open git-ls-tree failed");
1434        my $line = <$fd>;
1435        close $fd or return undef;
1436
1437        if (!defined $line) {
1438                # there is no tree or hash given by $path at $base
1439                return undef;
1440        }
1441
1442        #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1443        $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
1444        if (defined $type && $type ne $2) {
1445                # type doesn't match
1446                return undef;
1447        }
1448        return $3;
1449}
1450
1451# get path of entry with given hash at given tree-ish (ref)
1452# used to get 'from' filename for combined diff (merge commit) for renames
1453sub git_get_path_by_hash {
1454        my $base = shift || return;
1455        my $hash = shift || return;
1456
1457        local $/ = "\0";
1458
1459        open my $fd, "-|", git_cmd(), "ls-tree", '-r', '-t', '-z', $base
1460                or return undef;
1461        while (my $line = <$fd>) {
1462                chomp $line;
1463
1464                #'040000 tree 595596a6a9117ddba9fe379b6b012b558bac8423  gitweb'
1465                #'100644 blob e02e90f0429be0d2a69b76571101f20b8f75530f  gitweb/README'
1466                if ($line =~ m/(?:[0-9]+) (?:.+) $hash\t(.+)$/) {
1467                        close $fd;
1468                        return $1;
1469                }
1470        }
1471        close $fd;
1472        return undef;
1473}
1474
1475## ......................................................................
1476## git utility functions, directly accessing git repository
1477
1478sub git_get_project_description {
1479        my $path = shift;
1480
1481        open my $fd, "$projectroot/$path/description" or return undef;
1482        my $descr = <$fd>;
1483        close $fd;
1484        if (defined $descr) {
1485                chomp $descr;
1486        }
1487        return $descr;
1488}
1489
1490sub git_get_project_url_list {
1491        my $path = shift;
1492
1493        open my $fd, "$projectroot/$path/cloneurl" or return;
1494        my @git_project_url_list = map { chomp; $_ } <$fd>;
1495        close $fd;
1496
1497        return wantarray ? @git_project_url_list : \@git_project_url_list;
1498}
1499
1500sub git_get_projects_list {
1501        my ($filter) = @_;
1502        my @list;
1503
1504        $filter ||= '';
1505        $filter =~ s/\.git$//;
1506
1507        my ($check_forks) = gitweb_check_feature('forks');
1508
1509        if (-d $projects_list) {
1510                # search in directory
1511                my $dir = $projects_list . ($filter ? "/$filter" : '');
1512                # remove the trailing "/"
1513                $dir =~ s!/+$!!;
1514                my $pfxlen = length("$dir");
1515
1516                File::Find::find({
1517                        follow_fast => 1, # follow symbolic links
1518                        follow_skip => 2, # ignore duplicates
1519                        dangling_symlinks => 0, # ignore dangling symlinks, silently
1520                        wanted => sub {
1521                                # skip project-list toplevel, if we get it.
1522                                return if (m!^[/.]$!);
1523                                # only directories can be git repositories
1524                                return unless (-d $_);
1525
1526                                my $subdir = substr($File::Find::name, $pfxlen + 1);
1527                                # we check related file in $projectroot
1528                                if ($check_forks and $subdir =~ m#/.#) {
1529                                        $File::Find::prune = 1;
1530                                } elsif (check_export_ok("$projectroot/$filter/$subdir")) {
1531                                        push @list, { path => ($filter ? "$filter/" : '') . $subdir };
1532                                        $File::Find::prune = 1;
1533                                }
1534                        },
1535                }, "$dir");
1536
1537        } elsif (-f $projects_list) {
1538                # read from file(url-encoded):
1539                # 'git%2Fgit.git Linus+Torvalds'
1540                # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1541                # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1542                my %paths;
1543                open my ($fd), $projects_list or return;
1544        PROJECT:
1545                while (my $line = <$fd>) {
1546                        chomp $line;
1547                        my ($path, $owner) = split ' ', $line;
1548                        $path = unescape($path);
1549                        $owner = unescape($owner);
1550                        if (!defined $path) {
1551                                next;
1552                        }
1553                        if ($filter ne '') {
1554                                # looking for forks;
1555                                my $pfx = substr($path, 0, length($filter));
1556                                if ($pfx ne $filter) {
1557                                        next PROJECT;
1558                                }
1559                                my $sfx = substr($path, length($filter));
1560                                if ($sfx !~ /^\/.*\.git$/) {
1561                                        next PROJECT;
1562                                }
1563                        } elsif ($check_forks) {
1564                        PATH:
1565                                foreach my $filter (keys %paths) {
1566                                        # looking for forks;
1567                                        my $pfx = substr($path, 0, length($filter));
1568                                        if ($pfx ne $filter) {
1569                                                next PATH;
1570                                        }
1571                                        my $sfx = substr($path, length($filter));
1572                                        if ($sfx !~ /^\/.*\.git$/) {
1573                                                next PATH;
1574                                        }
1575                                        # is a fork, don't include it in
1576                                        # the list
1577                                        next PROJECT;
1578                                }
1579                        }
1580                        if (check_export_ok("$projectroot/$path")) {
1581                                my $pr = {
1582                                        path => $path,
1583                                        owner => to_utf8($owner),
1584                                };
1585                                push @list, $pr;
1586                                (my $forks_path = $path) =~ s/\.git$//;
1587                                $paths{$forks_path}++;
1588                        }
1589                }
1590                close $fd;
1591        }
1592        return @list;
1593}
1594
1595our $gitweb_project_owner = undef;
1596sub git_get_project_list_from_file {
1597
1598        return if (defined $gitweb_project_owner);
1599
1600        $gitweb_project_owner = {};
1601        # read from file (url-encoded):
1602        # 'git%2Fgit.git Linus+Torvalds'
1603        # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1604        # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1605        if (-f $projects_list) {
1606                open (my $fd , $projects_list);
1607                while (my $line = <$fd>) {
1608                        chomp $line;
1609                        my ($pr, $ow) = split ' ', $line;
1610                        $pr = unescape($pr);
1611                        $ow = unescape($ow);
1612                        $gitweb_project_owner->{$pr} = to_utf8($ow);
1613                }
1614                close $fd;
1615        }
1616}
1617
1618sub git_get_project_owner {
1619        my $project = shift;
1620        my $owner;
1621
1622        return undef unless $project;
1623
1624        if (!defined $gitweb_project_owner) {
1625                git_get_project_list_from_file();
1626        }
1627
1628        if (exists $gitweb_project_owner->{$project}) {
1629                $owner = $gitweb_project_owner->{$project};
1630        }
1631        if (!defined $owner) {
1632                $owner = get_file_owner("$projectroot/$project");
1633        }
1634
1635        return $owner;
1636}
1637
1638sub git_get_last_activity {
1639        my ($path) = @_;
1640        my $fd;
1641
1642        $git_dir = "$projectroot/$path";
1643        open($fd, "-|", git_cmd(), 'for-each-ref',
1644             '--format=%(committer)',
1645             '--sort=-committerdate',
1646             '--count=1',
1647             'refs/heads') or return;
1648        my $most_recent = <$fd>;
1649        close $fd or return;
1650        if (defined $most_recent &&
1651            $most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1652                my $timestamp = $1;
1653                my $age = time - $timestamp;
1654                return ($age, age_string($age));
1655        }
1656        return (undef, undef);
1657}
1658
1659sub git_get_references {
1660        my $type = shift || "";
1661        my %refs;
1662        # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
1663        # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
1664        open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
1665                ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
1666                or return;
1667
1668        while (my $line = <$fd>) {
1669                chomp $line;
1670                if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type/?[^^]+)!) {
1671                        if (defined $refs{$1}) {
1672                                push @{$refs{$1}}, $2;
1673                        } else {
1674                                $refs{$1} = [ $2 ];
1675                        }
1676                }
1677        }
1678        close $fd or return;
1679        return \%refs;
1680}
1681
1682sub git_get_rev_name_tags {
1683        my $hash = shift || return undef;
1684
1685        open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1686                or return;
1687        my $name_rev = <$fd>;
1688        close $fd;
1689
1690        if ($name_rev =~ m|^$hash tags/(.*)$|) {
1691                return $1;
1692        } else {
1693                # catches also '$hash undefined' output
1694                return undef;
1695        }
1696}
1697
1698## ----------------------------------------------------------------------
1699## parse to hash functions
1700
1701sub parse_date {
1702        my $epoch = shift;
1703        my $tz = shift || "-0000";
1704
1705        my %date;
1706        my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1707        my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1708        my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1709        $date{'hour'} = $hour;
1710        $date{'minute'} = $min;
1711        $date{'mday'} = $mday;
1712        $date{'day'} = $days[$wday];
1713        $date{'month'} = $months[$mon];
1714        $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1715                             $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1716        $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1717                             $mday, $months[$mon], $hour ,$min;
1718        $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
1719                             1900+$year, $mon, $mday, $hour ,$min, $sec;
1720
1721        $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1722        my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1723        ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1724        $date{'hour_local'} = $hour;
1725        $date{'minute_local'} = $min;
1726        $date{'tz_local'} = $tz;
1727        $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
1728                                  1900+$year, $mon+1, $mday,
1729                                  $hour, $min, $sec, $tz);
1730        return %date;
1731}
1732
1733sub parse_tag {
1734        my $tag_id = shift;
1735        my %tag;
1736        my @comment;
1737
1738        open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1739        $tag{'id'} = $tag_id;
1740        while (my $line = <$fd>) {
1741                chomp $line;
1742                if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1743                        $tag{'object'} = $1;
1744                } elsif ($line =~ m/^type (.+)$/) {
1745                        $tag{'type'} = $1;
1746                } elsif ($line =~ m/^tag (.+)$/) {
1747                        $tag{'name'} = $1;
1748                } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1749                        $tag{'author'} = $1;
1750                        $tag{'epoch'} = $2;
1751                        $tag{'tz'} = $3;
1752                } elsif ($line =~ m/--BEGIN/) {
1753                        push @comment, $line;
1754                        last;
1755                } elsif ($line eq "") {
1756                        last;
1757                }
1758        }
1759        push @comment, <$fd>;
1760        $tag{'comment'} = \@comment;
1761        close $fd or return;
1762        if (!defined $tag{'name'}) {
1763                return
1764        };
1765        return %tag
1766}
1767
1768sub parse_commit_text {
1769        my ($commit_text, $withparents) = @_;
1770        my @commit_lines = split '\n', $commit_text;
1771        my %co;
1772
1773        pop @commit_lines; # Remove '\0'
1774
1775        if (! @commit_lines) {
1776                return;
1777        }
1778
1779        my $header = shift @commit_lines;
1780        if ($header !~ m/^[0-9a-fA-F]{40}/) {
1781                return;
1782        }
1783        ($co{'id'}, my @parents) = split ' ', $header;
1784        while (my $line = shift @commit_lines) {
1785                last if $line eq "\n";
1786                if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1787                        $co{'tree'} = $1;
1788                } elsif ((!defined $withparents) && ($line =~ m/^parent ([0-9a-fA-F]{40})$/)) {
1789                        push @parents, $1;
1790                } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1791                        $co{'author'} = $1;
1792                        $co{'author_epoch'} = $2;
1793                        $co{'author_tz'} = $3;
1794                        if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
1795                                $co{'author_name'}  = $1;
1796                                $co{'author_email'} = $2;
1797                        } else {
1798                                $co{'author_name'} = $co{'author'};
1799                        }
1800                } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1801                        $co{'committer'} = $1;
1802                        $co{'committer_epoch'} = $2;
1803                        $co{'committer_tz'} = $3;
1804                        $co{'committer_name'} = $co{'committer'};
1805                        if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
1806                                $co{'committer_name'}  = $1;
1807                                $co{'committer_email'} = $2;
1808                        } else {
1809                                $co{'committer_name'} = $co{'committer'};
1810                        }
1811                }
1812        }
1813        if (!defined $co{'tree'}) {
1814                return;
1815        };
1816        $co{'parents'} = \@parents;
1817        $co{'parent'} = $parents[0];
1818
1819        foreach my $title (@commit_lines) {
1820                $title =~ s/^    //;
1821                if ($title ne "") {
1822                        $co{'title'} = chop_str($title, 80, 5);
1823                        # remove leading stuff of merges to make the interesting part visible
1824                        if (length($title) > 50) {
1825                                $title =~ s/^Automatic //;
1826                                $title =~ s/^merge (of|with) /Merge ... /i;
1827                                if (length($title) > 50) {
1828                                        $title =~ s/(http|rsync):\/\///;
1829                                }
1830                                if (length($title) > 50) {
1831                                        $title =~ s/(master|www|rsync)\.//;
1832                                }
1833                                if (length($title) > 50) {
1834                                        $title =~ s/kernel.org:?//;
1835                                }
1836                                if (length($title) > 50) {
1837                                        $title =~ s/\/pub\/scm//;
1838                                }
1839                        }
1840                        $co{'title_short'} = chop_str($title, 50, 5);
1841                        last;
1842                }
1843        }
1844        if ($co{'title'} eq "") {
1845                $co{'title'} = $co{'title_short'} = '(no commit message)';
1846        }
1847        # remove added spaces
1848        foreach my $line (@commit_lines) {
1849                $line =~ s/^    //;
1850        }
1851        $co{'comment'} = \@commit_lines;
1852
1853        my $age = time - $co{'committer_epoch'};
1854        $co{'age'} = $age;
1855        $co{'age_string'} = age_string($age);
1856        my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1857        if ($age > 60*60*24*7*2) {
1858                $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1859                $co{'age_string_age'} = $co{'age_string'};
1860        } else {
1861                $co{'age_string_date'} = $co{'age_string'};
1862                $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1863        }
1864        return %co;
1865}
1866
1867sub parse_commit {
1868        my ($commit_id) = @_;
1869        my %co;
1870
1871        local $/ = "\0";
1872
1873        open my $fd, "-|", git_cmd(), "rev-list",
1874                "--parents",
1875                "--header",
1876                "--max-count=1",
1877                $commit_id,
1878                "--",
1879                or die_error(undef, "Open git-rev-list failed");
1880        %co = parse_commit_text(<$fd>, 1);
1881        close $fd;
1882
1883        return %co;
1884}
1885
1886sub parse_commits {
1887        my ($commit_id, $maxcount, $skip, $arg, $filename) = @_;
1888        my @cos;
1889
1890        $maxcount ||= 1;
1891        $skip ||= 0;
1892
1893        local $/ = "\0";
1894
1895        open my $fd, "-|", git_cmd(), "rev-list",
1896                "--header",
1897                ($arg ? ($arg) : ()),
1898                ("--max-count=" . $maxcount),
1899                ("--skip=" . $skip),
1900                @extra_options,
1901                $commit_id,
1902                "--",
1903                ($filename ? ($filename) : ())
1904                or die_error(undef, "Open git-rev-list failed");
1905        while (my $line = <$fd>) {
1906                my %co = parse_commit_text($line);
1907                push @cos, \%co;
1908        }
1909        close $fd;
1910
1911        return wantarray ? @cos : \@cos;
1912}
1913
1914# parse ref from ref_file, given by ref_id, with given type
1915sub parse_ref {
1916        my $ref_file = shift;
1917        my $ref_id = shift;
1918        my $type = shift || git_get_type($ref_id);
1919        my %ref_item;
1920
1921        $ref_item{'type'} = $type;
1922        $ref_item{'id'} = $ref_id;
1923        $ref_item{'epoch'} = 0;
1924        $ref_item{'age'} = "unknown";
1925        if ($type eq "tag") {
1926                my %tag = parse_tag($ref_id);
1927                $ref_item{'comment'} = $tag{'comment'};
1928                if ($tag{'type'} eq "commit") {
1929                        my %co = parse_commit($tag{'object'});
1930                        $ref_item{'epoch'} = $co{'committer_epoch'};
1931                        $ref_item{'age'} = $co{'age_string'};
1932                } elsif (defined($tag{'epoch'})) {
1933                        my $age = time - $tag{'epoch'};
1934                        $ref_item{'epoch'} = $tag{'epoch'};
1935                        $ref_item{'age'} = age_string($age);
1936                }
1937                $ref_item{'reftype'} = $tag{'type'};
1938                $ref_item{'name'} = $tag{'name'};
1939                $ref_item{'refid'} = $tag{'object'};
1940        } elsif ($type eq "commit"){
1941                my %co = parse_commit($ref_id);
1942                $ref_item{'reftype'} = "commit";
1943                $ref_item{'name'} = $ref_file;
1944                $ref_item{'title'} = $co{'title'};
1945                $ref_item{'refid'} = $ref_id;
1946                $ref_item{'epoch'} = $co{'committer_epoch'};
1947                $ref_item{'age'} = $co{'age_string'};
1948        } else {
1949                $ref_item{'reftype'} = $type;
1950                $ref_item{'name'} = $ref_file;
1951                $ref_item{'refid'} = $ref_id;
1952        }
1953
1954        return %ref_item;
1955}
1956
1957# parse line of git-diff-tree "raw" output
1958sub parse_difftree_raw_line {
1959        my $line = shift;
1960        my %res;
1961
1962        # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1963        # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1964        if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1965                $res{'from_mode'} = $1;
1966                $res{'to_mode'} = $2;
1967                $res{'from_id'} = $3;
1968                $res{'to_id'} = $4;
1969                $res{'status'} = $5;
1970                $res{'similarity'} = $6;
1971                if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1972                        ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1973                } else {
1974                        $res{'file'} = unquote($7);
1975                }
1976        }
1977        # '::100755 100755 100755 60e79ca1b01bc8b057abe17ddab484699a7f5fdb 94067cc5f73388f33722d52ae02f44692bc07490 94067cc5f73388f33722d52ae02f44692bc07490 MR git-gui/git-gui.sh'
1978        # combined diff (for merge commit)
1979        elsif ($line =~ s/^(::+)((?:[0-7]{6} )+)((?:[0-9a-fA-F]{40} )+)([a-zA-Z]+)\t(.*)$//) {
1980                $res{'nparents'}  = length($1);
1981                $res{'from_mode'} = [ split(' ', $2) ];
1982                $res{'to_mode'} = pop @{$res{'from_mode'}};
1983                $res{'from_id'} = [ split(' ', $3) ];
1984                $res{'to_id'} = pop @{$res{'from_id'}};
1985                $res{'status'} = [ split('', $4) ];
1986                $res{'to_file'} = unquote($5);
1987        }
1988        # 'c512b523472485aef4fff9e57b229d9d243c967f'
1989        elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1990                $res{'commit'} = $1;
1991        }
1992
1993        return wantarray ? %res : \%res;
1994}
1995
1996# parse line of git-ls-tree output
1997sub parse_ls_tree_line ($;%) {
1998        my $line = shift;
1999        my %opts = @_;
2000        my %res;
2001
2002        #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
2003        $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
2004
2005        $res{'mode'} = $1;
2006        $res{'type'} = $2;
2007        $res{'hash'} = $3;
2008        if ($opts{'-z'}) {
2009                $res{'name'} = $4;
2010        } else {
2011                $res{'name'} = unquote($4);
2012        }
2013
2014        return wantarray ? %res : \%res;
2015}
2016
2017# generates _two_ hashes, references to which are passed as 2 and 3 argument
2018sub parse_from_to_diffinfo {
2019        my ($diffinfo, $from, $to, @parents) = @_;
2020
2021        if ($diffinfo->{'nparents'}) {
2022                # combined diff
2023                $from->{'file'} = [];
2024                $from->{'href'} = [];
2025                fill_from_file_info($diffinfo, @parents)
2026                        unless exists $diffinfo->{'from_file'};
2027                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2028                        $from->{'file'}[$i] = $diffinfo->{'from_file'}[$i] || $diffinfo->{'to_file'};
2029                        if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
2030                                $from->{'href'}[$i] = href(action=>"blob",
2031                                                           hash_base=>$parents[$i],
2032                                                           hash=>$diffinfo->{'from_id'}[$i],
2033                                                           file_name=>$from->{'file'}[$i]);
2034                        } else {
2035                                $from->{'href'}[$i] = undef;
2036                        }
2037                }
2038        } else {
2039                $from->{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
2040                if ($diffinfo->{'status'} ne "A") { # not new (added) file
2041                        $from->{'href'} = href(action=>"blob", hash_base=>$hash_parent,
2042                                               hash=>$diffinfo->{'from_id'},
2043                                               file_name=>$from->{'file'});
2044                } else {
2045                        delete $from->{'href'};
2046                }
2047        }
2048
2049        $to->{'file'} = $diffinfo->{'to_file'} || $diffinfo->{'file'};
2050        if (!is_deleted($diffinfo)) { # file exists in result
2051                $to->{'href'} = href(action=>"blob", hash_base=>$hash,
2052                                     hash=>$diffinfo->{'to_id'},
2053                                     file_name=>$to->{'file'});
2054        } else {
2055                delete $to->{'href'};
2056        }
2057}
2058
2059## ......................................................................
2060## parse to array of hashes functions
2061
2062sub git_get_heads_list {
2063        my $limit = shift;
2064        my @headslist;
2065
2066        open my $fd, '-|', git_cmd(), 'for-each-ref',
2067                ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
2068                '--format=%(objectname) %(refname) %(subject)%00%(committer)',
2069                'refs/heads'
2070                or return;
2071        while (my $line = <$fd>) {
2072                my %ref_item;
2073
2074                chomp $line;
2075                my ($refinfo, $committerinfo) = split(/\0/, $line);
2076                my ($hash, $name, $title) = split(' ', $refinfo, 3);
2077                my ($committer, $epoch, $tz) =
2078                        ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
2079                $name =~ s!^refs/heads/!!;
2080
2081                $ref_item{'name'}  = $name;
2082                $ref_item{'id'}    = $hash;
2083                $ref_item{'title'} = $title || '(no commit message)';
2084                $ref_item{'epoch'} = $epoch;
2085                if ($epoch) {
2086                        $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
2087                } else {
2088                        $ref_item{'age'} = "unknown";
2089                }
2090
2091                push @headslist, \%ref_item;
2092        }
2093        close $fd;
2094
2095        return wantarray ? @headslist : \@headslist;
2096}
2097
2098sub git_get_tags_list {
2099        my $limit = shift;
2100        my @tagslist;
2101
2102        open my $fd, '-|', git_cmd(), 'for-each-ref',
2103                ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
2104                '--format=%(objectname) %(objecttype) %(refname) '.
2105                '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
2106                'refs/tags'
2107                or return;
2108        while (my $line = <$fd>) {
2109                my %ref_item;
2110
2111                chomp $line;
2112                my ($refinfo, $creatorinfo) = split(/\0/, $line);
2113                my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
2114                my ($creator, $epoch, $tz) =
2115                        ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
2116                $name =~ s!^refs/tags/!!;
2117
2118                $ref_item{'type'} = $type;
2119                $ref_item{'id'} = $id;
2120                $ref_item{'name'} = $name;
2121                if ($type eq "tag") {
2122                        $ref_item{'subject'} = $title;
2123                        $ref_item{'reftype'} = $reftype;
2124                        $ref_item{'refid'}   = $refid;
2125                } else {
2126                        $ref_item{'reftype'} = $type;
2127                        $ref_item{'refid'}   = $id;
2128                }
2129
2130                if ($type eq "tag" || $type eq "commit") {
2131                        $ref_item{'epoch'} = $epoch;
2132                        if ($epoch) {
2133                                $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
2134                        } else {
2135                                $ref_item{'age'} = "unknown";
2136                        }
2137                }
2138
2139                push @tagslist, \%ref_item;
2140        }
2141        close $fd;
2142
2143        return wantarray ? @tagslist : \@tagslist;
2144}
2145
2146## ----------------------------------------------------------------------
2147## filesystem-related functions
2148
2149sub get_file_owner {
2150        my $path = shift;
2151
2152        my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
2153        my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
2154        if (!defined $gcos) {
2155                return undef;
2156        }
2157        my $owner = $gcos;
2158        $owner =~ s/[,;].*$//;
2159        return to_utf8($owner);
2160}
2161
2162## ......................................................................
2163## mimetype related functions
2164
2165sub mimetype_guess_file {
2166        my $filename = shift;
2167        my $mimemap = shift;
2168        -r $mimemap or return undef;
2169
2170        my %mimemap;
2171        open(MIME, $mimemap) or return undef;
2172        while (<MIME>) {
2173                next if m/^#/; # skip comments
2174                my ($mime, $exts) = split(/\t+/);
2175                if (defined $exts) {
2176                        my @exts = split(/\s+/, $exts);
2177                        foreach my $ext (@exts) {
2178                                $mimemap{$ext} = $mime;
2179                        }
2180                }
2181        }
2182        close(MIME);
2183
2184        $filename =~ /\.([^.]*)$/;
2185        return $mimemap{$1};
2186}
2187
2188sub mimetype_guess {
2189        my $filename = shift;
2190        my $mime;
2191        $filename =~ /\./ or return undef;
2192
2193        if ($mimetypes_file) {
2194                my $file = $mimetypes_file;
2195                if ($file !~ m!^/!) { # if it is relative path
2196                        # it is relative to project
2197                        $file = "$projectroot/$project/$file";
2198                }
2199                $mime = mimetype_guess_file($filename, $file);
2200        }
2201        $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
2202        return $mime;
2203}
2204
2205sub blob_mimetype {
2206        my $fd = shift;
2207        my $filename = shift;
2208
2209        if ($filename) {
2210                my $mime = mimetype_guess($filename);
2211                $mime and return $mime;
2212        }
2213
2214        # just in case
2215        return $default_blob_plain_mimetype unless $fd;
2216
2217        if (-T $fd) {
2218                return 'text/plain' .
2219                       ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
2220        } elsif (! $filename) {
2221                return 'application/octet-stream';
2222        } elsif ($filename =~ m/\.png$/i) {
2223                return 'image/png';
2224        } elsif ($filename =~ m/\.gif$/i) {
2225                return 'image/gif';
2226        } elsif ($filename =~ m/\.jpe?g$/i) {
2227                return 'image/jpeg';
2228        } else {
2229                return 'application/octet-stream';
2230        }
2231}
2232
2233## ======================================================================
2234## functions printing HTML: header, footer, error page
2235
2236sub git_header_html {
2237        my $status = shift || "200 OK";
2238        my $expires = shift;
2239
2240        my $title = "$site_name";
2241        if (defined $project) {
2242                $title .= " - " . to_utf8($project);
2243                if (defined $action) {
2244                        $title .= "/$action";
2245                        if (defined $file_name) {
2246                                $title .= " - " . esc_path($file_name);
2247                                if ($action eq "tree" && $file_name !~ m|/$|) {
2248                                        $title .= "/";
2249                                }
2250                        }
2251                }
2252        }
2253        my $content_type;
2254        # require explicit support from the UA if we are to send the page as
2255        # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
2256        # we have to do this because MSIE sometimes globs '*/*', pretending to
2257        # support xhtml+xml but choking when it gets what it asked for.
2258        if (defined $cgi->http('HTTP_ACCEPT') &&
2259            $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
2260            $cgi->Accept('application/xhtml+xml') != 0) {
2261                $content_type = 'application/xhtml+xml';
2262        } else {
2263                $content_type = 'text/html';
2264        }
2265        print $cgi->header(-type=>$content_type, -charset => 'utf-8',
2266                           -status=> $status, -expires => $expires);
2267        my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
2268        print <<EOF;
2269<?xml version="1.0" encoding="utf-8"?>
2270<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
2271<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
2272<!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
2273<!-- git core binaries version $git_version -->
2274<head>
2275<meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
2276<meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
2277<meta name="robots" content="index, nofollow"/>
2278<title>$title</title>
2279EOF
2280# print out each stylesheet that exist
2281        if (defined $stylesheet) {
2282#provides backwards capability for those people who define style sheet in a config file
2283                print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
2284        } else {
2285                foreach my $stylesheet (@stylesheets) {
2286                        next unless $stylesheet;
2287                        print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
2288                }
2289        }
2290        if (defined $project) {
2291                printf('<link rel="alternate" title="%s log RSS feed" '.
2292                       'href="%s" type="application/rss+xml" />'."\n",
2293                       esc_param($project), href(action=>"rss"));
2294                printf('<link rel="alternate" title="%s log RSS feed (no merges)" '.
2295                       'href="%s" type="application/rss+xml" />'."\n",
2296                       esc_param($project), href(action=>"rss",
2297                                                 extra_options=>"--no-merges"));
2298                printf('<link rel="alternate" title="%s log Atom feed" '.
2299                       'href="%s" type="application/atom+xml" />'."\n",
2300                       esc_param($project), href(action=>"atom"));
2301                printf('<link rel="alternate" title="%s log Atom feed (no merges)" '.
2302                       'href="%s" type="application/atom+xml" />'."\n",
2303                       esc_param($project), href(action=>"atom",
2304                                                 extra_options=>"--no-merges"));
2305        } else {
2306                printf('<link rel="alternate" title="%s projects list" '.
2307                       'href="%s" type="text/plain; charset=utf-8"/>'."\n",
2308                       $site_name, href(project=>undef, action=>"project_index"));
2309                printf('<link rel="alternate" title="%s projects feeds" '.
2310                       'href="%s" type="text/x-opml"/>'."\n",
2311                       $site_name, href(project=>undef, action=>"opml"));
2312        }
2313        if (defined $favicon) {
2314                print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
2315        }
2316
2317        print "</head>\n" .
2318              "<body>\n";
2319
2320        if (-f $site_header) {
2321                open (my $fd, $site_header);
2322                print <$fd>;
2323                close $fd;
2324        }
2325
2326        print "<div class=\"page_header\">\n" .
2327              $cgi->a({-href => esc_url($logo_url),
2328                       -title => $logo_label},
2329                      qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
2330        print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
2331        if (defined $project) {
2332                print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
2333                if (defined $action) {
2334                        print " / $action";
2335                }
2336                print "\n";
2337        }
2338        print "</div>\n";
2339
2340        my ($have_search) = gitweb_check_feature('search');
2341        if ((defined $project) && ($have_search)) {
2342                if (!defined $searchtext) {
2343                        $searchtext = "";
2344                }
2345                my $search_hash;
2346                if (defined $hash_base) {
2347                        $search_hash = $hash_base;
2348                } elsif (defined $hash) {
2349                        $search_hash = $hash;
2350                } else {
2351                        $search_hash = "HEAD";
2352                }
2353                my $action = $my_uri;
2354                my ($use_pathinfo) = gitweb_check_feature('pathinfo');
2355                if ($use_pathinfo) {
2356                        $action .= "/$project";
2357                } else {
2358                        $cgi->param("p", $project);
2359                }
2360                $cgi->param("a", "search");
2361                $cgi->param("h", $search_hash);
2362                print $cgi->startform(-method => "get", -action => $action) .
2363                      "<div class=\"search\">\n" .
2364                      (!$use_pathinfo && $cgi->hidden(-name => "p") . "\n") .
2365                      $cgi->hidden(-name => "a") . "\n" .
2366                      $cgi->hidden(-name => "h") . "\n" .
2367                      $cgi->popup_menu(-name => 'st', -default => 'commit',
2368                                       -values => ['commit', 'grep', 'author', 'committer', 'pickaxe']) .
2369                      $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
2370                      " search:\n",
2371                      $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
2372                      "</div>" .
2373                      $cgi->end_form() . "\n";
2374        }
2375}
2376
2377sub git_footer_html {
2378        print "<div class=\"page_footer\">\n";
2379        if (defined $project) {
2380                my $descr = git_get_project_description($project);
2381                if (defined $descr) {
2382                        print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
2383                }
2384                print $cgi->a({-href => href(action=>"rss"),
2385                              -class => "rss_logo"}, "RSS") . " ";
2386                print $cgi->a({-href => href(action=>"atom"),
2387                              -class => "rss_logo"}, "Atom") . "\n";
2388        } else {
2389                print $cgi->a({-href => href(project=>undef, action=>"opml"),
2390                              -class => "rss_logo"}, "OPML") . " ";
2391                print $cgi->a({-href => href(project=>undef, action=>"project_index"),
2392                              -class => "rss_logo"}, "TXT") . "\n";
2393        }
2394        print "</div>\n" ;
2395
2396        if (-f $site_footer) {
2397                open (my $fd, $site_footer);
2398                print <$fd>;
2399                close $fd;
2400        }
2401
2402        print "</body>\n" .
2403              "</html>";
2404}
2405
2406sub die_error {
2407        my $status = shift || "403 Forbidden";
2408        my $error = shift || "Malformed query, file missing or permission denied";
2409
2410        git_header_html($status);
2411        print <<EOF;
2412<div class="page_body">
2413<br /><br />
2414$status - $error
2415<br />
2416</div>
2417EOF
2418        git_footer_html();
2419        exit;
2420}
2421
2422## ----------------------------------------------------------------------
2423## functions printing or outputting HTML: navigation
2424
2425sub git_print_page_nav {
2426        my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
2427        $extra = '' if !defined $extra; # pager or formats
2428
2429        my @navs = qw(summary shortlog log commit commitdiff tree);
2430        if ($suppress) {
2431                @navs = grep { $_ ne $suppress } @navs;
2432        }
2433
2434        my %arg = map { $_ => {action=>$_} } @navs;
2435        if (defined $head) {
2436                for (qw(commit commitdiff)) {
2437                        $arg{$_}{'hash'} = $head;
2438                }
2439                if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
2440                        for (qw(shortlog log)) {
2441                                $arg{$_}{'hash'} = $head;
2442                        }
2443                }
2444        }
2445        $arg{'tree'}{'hash'} = $treehead if defined $treehead;
2446        $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
2447
2448        print "<div class=\"page_nav\">\n" .
2449                (join " | ",
2450                 map { $_ eq $current ?
2451                       $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
2452                 } @navs);
2453        print "<br/>\n$extra<br/>\n" .
2454              "</div>\n";
2455}
2456
2457sub format_paging_nav {
2458        my ($action, $hash, $head, $page, $nrevs) = @_;
2459        my $paging_nav;
2460
2461
2462        if ($hash ne $head || $page) {
2463                $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
2464        } else {
2465                $paging_nav .= "HEAD";
2466        }
2467
2468        if ($page > 0) {
2469                $paging_nav .= " &sdot; " .
2470                        $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
2471                                 -accesskey => "p", -title => "Alt-p"}, "prev");
2472        } else {
2473                $paging_nav .= " &sdot; prev";
2474        }
2475
2476        if ($nrevs >= (100 * ($page+1)-1)) {
2477                $paging_nav .= " &sdot; " .
2478                        $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
2479                                 -accesskey => "n", -title => "Alt-n"}, "next");
2480        } else {
2481                $paging_nav .= " &sdot; next";
2482        }
2483
2484        return $paging_nav;
2485}
2486
2487## ......................................................................
2488## functions printing or outputting HTML: div
2489
2490sub git_print_header_div {
2491        my ($action, $title, $hash, $hash_base) = @_;
2492        my %args = ();
2493
2494        $args{'action'} = $action;
2495        $args{'hash'} = $hash if $hash;
2496        $args{'hash_base'} = $hash_base if $hash_base;
2497
2498        print "<div class=\"header\">\n" .
2499              $cgi->a({-href => href(%args), -class => "title"},
2500              $title ? $title : $action) .
2501              "\n</div>\n";
2502}
2503
2504#sub git_print_authorship (\%) {
2505sub git_print_authorship {
2506        my $co = shift;
2507
2508        my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
2509        print "<div class=\"author_date\">" .
2510              esc_html($co->{'author_name'}) .
2511              " [$ad{'rfc2822'}";
2512        if ($ad{'hour_local'} < 6) {
2513                printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
2514                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2515        } else {
2516                printf(" (%02d:%02d %s)",
2517                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2518        }
2519        print "]</div>\n";
2520}
2521
2522sub git_print_page_path {
2523        my $name = shift;
2524        my $type = shift;
2525        my $hb = shift;
2526
2527
2528        print "<div class=\"page_path\">";
2529        print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
2530                      -title => 'tree root'}, to_utf8("[$project]"));
2531        print " / ";
2532        if (defined $name) {
2533                my @dirname = split '/', $name;
2534                my $basename = pop @dirname;
2535                my $fullname = '';
2536
2537                foreach my $dir (@dirname) {
2538                        $fullname .= ($fullname ? '/' : '') . $dir;
2539                        print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
2540                                                     hash_base=>$hb),
2541                                      -title => $fullname}, esc_path($dir));
2542                        print " / ";
2543                }
2544                if (defined $type && $type eq 'blob') {
2545                        print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
2546                                                     hash_base=>$hb),
2547                                      -title => $name}, esc_path($basename));
2548                } elsif (defined $type && $type eq 'tree') {
2549                        print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
2550                                                     hash_base=>$hb),
2551                                      -title => $name}, esc_path($basename));
2552                        print " / ";
2553                } else {
2554                        print esc_path($basename);
2555                }
2556        }
2557        print "<br/></div>\n";
2558}
2559
2560# sub git_print_log (\@;%) {
2561sub git_print_log ($;%) {
2562        my $log = shift;
2563        my %opts = @_;
2564
2565        if ($opts{'-remove_title'}) {
2566                # remove title, i.e. first line of log
2567                shift @$log;
2568        }
2569        # remove leading empty lines
2570        while (defined $log->[0] && $log->[0] eq "") {
2571                shift @$log;
2572        }
2573
2574        # print log
2575        my $signoff = 0;
2576        my $empty = 0;
2577        foreach my $line (@$log) {
2578                if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2579                        $signoff = 1;
2580                        $empty = 0;
2581                        if (! $opts{'-remove_signoff'}) {
2582                                print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
2583                                next;
2584                        } else {
2585                                # remove signoff lines
2586                                next;
2587                        }
2588                } else {
2589                        $signoff = 0;
2590                }
2591
2592                # print only one empty line
2593                # do not print empty line after signoff
2594                if ($line eq "") {
2595                        next if ($empty || $signoff);
2596                        $empty = 1;
2597                } else {
2598                        $empty = 0;
2599                }
2600
2601                print format_log_line_html($line) . "<br/>\n";
2602        }
2603
2604        if ($opts{'-final_empty_line'}) {
2605                # end with single empty line
2606                print "<br/>\n" unless $empty;
2607        }
2608}
2609
2610# return link target (what link points to)
2611sub git_get_link_target {
2612        my $hash = shift;
2613        my $link_target;
2614
2615        # read link
2616        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2617                or return;
2618        {
2619                local $/;
2620                $link_target = <$fd>;
2621        }
2622        close $fd
2623                or return;
2624
2625        return $link_target;
2626}
2627
2628# given link target, and the directory (basedir) the link is in,
2629# return target of link relative to top directory (top tree);
2630# return undef if it is not possible (including absolute links).
2631sub normalize_link_target {
2632        my ($link_target, $basedir, $hash_base) = @_;
2633
2634        # we can normalize symlink target only if $hash_base is provided
2635        return unless $hash_base;
2636
2637        # absolute symlinks (beginning with '/') cannot be normalized
2638        return if (substr($link_target, 0, 1) eq '/');
2639
2640        # normalize link target to path from top (root) tree (dir)
2641        my $path;
2642        if ($basedir) {
2643                $path = $basedir . '/' . $link_target;
2644        } else {
2645                # we are in top (root) tree (dir)
2646                $path = $link_target;
2647        }
2648
2649        # remove //, /./, and /../
2650        my @path_parts;
2651        foreach my $part (split('/', $path)) {
2652                # discard '.' and ''
2653                next if (!$part || $part eq '.');
2654                # handle '..'
2655                if ($part eq '..') {
2656                        if (@path_parts) {
2657                                pop @path_parts;
2658                        } else {
2659                                # link leads outside repository (outside top dir)
2660                                return;
2661                        }
2662                } else {
2663                        push @path_parts, $part;
2664                }
2665        }
2666        $path = join('/', @path_parts);
2667
2668        return $path;
2669}
2670
2671# print tree entry (row of git_tree), but without encompassing <tr> element
2672sub git_print_tree_entry {
2673        my ($t, $basedir, $hash_base, $have_blame) = @_;
2674
2675        my %base_key = ();
2676        $base_key{'hash_base'} = $hash_base if defined $hash_base;
2677
2678        # The format of a table row is: mode list link.  Where mode is
2679        # the mode of the entry, list is the name of the entry, an href,
2680        # and link is the action links of the entry.
2681
2682        print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
2683        if ($t->{'type'} eq "blob") {
2684                print "<td class=\"list\">" .
2685                        $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2686                                               file_name=>"$basedir$t->{'name'}", %base_key),
2687                                -class => "list"}, esc_path($t->{'name'}));
2688                if (S_ISLNK(oct $t->{'mode'})) {
2689                        my $link_target = git_get_link_target($t->{'hash'});
2690                        if ($link_target) {
2691                                my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
2692                                if (defined $norm_target) {
2693                                        print " -> " .
2694                                              $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
2695                                                                     file_name=>$norm_target),
2696                                                       -title => $norm_target}, esc_path($link_target));
2697                                } else {
2698                                        print " -> " . esc_path($link_target);
2699                                }
2700                        }
2701                }
2702                print "</td>\n";
2703                print "<td class=\"link\">";
2704                print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2705                                             file_name=>"$basedir$t->{'name'}", %base_key)},
2706                              "blob");
2707                if ($have_blame) {
2708                        print " | " .
2709                              $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
2710                                                     file_name=>"$basedir$t->{'name'}", %base_key)},
2711                                      "blame");
2712                }
2713                if (defined $hash_base) {
2714                        print " | " .
2715                              $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2716                                                     hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
2717                                      "history");
2718                }
2719                print " | " .
2720                        $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
2721                                               file_name=>"$basedir$t->{'name'}")},
2722                                "raw");
2723                print "</td>\n";
2724
2725        } elsif ($t->{'type'} eq "tree") {
2726                print "<td class=\"list\">";
2727                print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2728                                             file_name=>"$basedir$t->{'name'}", %base_key)},
2729                              esc_path($t->{'name'}));
2730                print "</td>\n";
2731                print "<td class=\"link\">";
2732                print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2733                                             file_name=>"$basedir$t->{'name'}", %base_key)},
2734                              "tree");
2735                if (defined $hash_base) {
2736                        print " | " .
2737                              $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2738                                                     file_name=>"$basedir$t->{'name'}")},
2739                                      "history");
2740                }
2741                print "</td>\n";
2742        } else {
2743                # unknown object: we can only present history for it
2744                # (this includes 'commit' object, i.e. submodule support)
2745                print "<td class=\"list\">" .
2746                      esc_path($t->{'name'}) .
2747                      "</td>\n";
2748                print "<td class=\"link\">";
2749                if (defined $hash_base) {
2750                        print $cgi->a({-href => href(action=>"history",
2751                                                     hash_base=>$hash_base,
2752                                                     file_name=>"$basedir$t->{'name'}")},
2753                                      "history");
2754                }
2755                print "</td>\n";
2756        }
2757}
2758
2759## ......................................................................
2760## functions printing large fragments of HTML
2761
2762sub fill_from_file_info {
2763        my ($diff, @parents) = @_;
2764
2765        $diff->{'from_file'} = [ ];
2766        $diff->{'from_file'}[$diff->{'nparents'} - 1] = undef;
2767        for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2768                if ($diff->{'status'}[$i] eq 'R' ||
2769                    $diff->{'status'}[$i] eq 'C') {
2770                        $diff->{'from_file'}[$i] =
2771                                git_get_path_by_hash($parents[$i], $diff->{'from_id'}[$i]);
2772                }
2773        }
2774
2775        return $diff;
2776}
2777
2778# parameters can be strings, or references to arrays of strings
2779sub from_ids_eq {
2780        my ($a, $b) = @_;
2781
2782        if (ref($a) eq "ARRAY" && ref($b) eq "ARRAY" && @$a == @$b) {
2783                for (my $i = 0; $i < @$a; ++$i) {
2784                        return 0 unless ($a->[$i] eq $b->[$i]);
2785                }
2786                return 1;
2787        } elsif (!ref($a) && !ref($b)) {
2788                return $a eq $b;
2789        } else {
2790                return 0;
2791        }
2792}
2793
2794sub is_deleted {
2795        my $diffinfo = shift;
2796
2797        return $diffinfo->{'to_id'} eq ('0' x 40);
2798}
2799
2800sub git_difftree_body {
2801        my ($difftree, $hash, @parents) = @_;
2802        my ($parent) = $parents[0];
2803        my ($have_blame) = gitweb_check_feature('blame');
2804        print "<div class=\"list_head\">\n";
2805        if ($#{$difftree} > 10) {
2806                print(($#{$difftree} + 1) . " files changed:\n");
2807        }
2808        print "</div>\n";
2809
2810        print "<table class=\"" .
2811              (@parents > 1 ? "combined " : "") .
2812              "diff_tree\">\n";
2813
2814        # header only for combined diff in 'commitdiff' view
2815        my $has_header = @parents > 1 && $action eq 'commitdiff';
2816        if ($has_header) {
2817                # table header
2818                print "<thead><tr>\n" .
2819                       "<th></th><th></th>\n"; # filename, patchN link
2820                for (my $i = 0; $i < @parents; $i++) {
2821                        my $par = $parents[$i];
2822                        print "<th>" .
2823                              $cgi->a({-href => href(action=>"commitdiff",
2824                                                     hash=>$hash, hash_parent=>$par),
2825                                       -title => 'commitdiff to parent number ' .
2826                                                  ($i+1) . ': ' . substr($par,0,7)},
2827                                      $i+1) .
2828                              "&nbsp;</th>\n";
2829                }
2830                print "</tr></thead>\n<tbody>\n";
2831        }
2832
2833        my $alternate = 1;
2834        my $patchno = 0;
2835        foreach my $line (@{$difftree}) {
2836                my $diff;
2837                if (ref($line) eq "HASH") {
2838                        # pre-parsed (or generated by hand)
2839                        $diff = $line;
2840                } else {
2841                        $diff = parse_difftree_raw_line($line);
2842                }
2843
2844                if ($alternate) {
2845                        print "<tr class=\"dark\">\n";
2846                } else {
2847                        print "<tr class=\"light\">\n";
2848                }
2849                $alternate ^= 1;
2850
2851                if (exists $diff->{'nparents'}) { # combined diff
2852
2853                        fill_from_file_info($diff, @parents)
2854                                unless exists $diff->{'from_file'};
2855
2856                        if (!is_deleted($diff)) {
2857                                # file exists in the result (child) commit
2858                                print "<td>" .
2859                                      $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2860                                                             file_name=>$diff->{'to_file'},
2861                                                             hash_base=>$hash),
2862                                              -class => "list"}, esc_path($diff->{'to_file'})) .
2863                                      "</td>\n";
2864                        } else {
2865                                print "<td>" .
2866                                      esc_path($diff->{'to_file'}) .
2867                                      "</td>\n";
2868                        }
2869
2870                        if ($action eq 'commitdiff') {
2871                                # link to patch
2872                                $patchno++;
2873                                print "<td class=\"link\">" .
2874                                      $cgi->a({-href => "#patch$patchno"}, "patch") .
2875                                      " | " .
2876                                      "</td>\n";
2877                        }
2878
2879                        my $has_history = 0;
2880                        my $not_deleted = 0;
2881                        for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2882                                my $hash_parent = $parents[$i];
2883                                my $from_hash = $diff->{'from_id'}[$i];
2884                                my $from_path = $diff->{'from_file'}[$i];
2885                                my $status = $diff->{'status'}[$i];
2886
2887                                $has_history ||= ($status ne 'A');
2888                                $not_deleted ||= ($status ne 'D');
2889
2890                                if ($status eq 'A') {
2891                                        print "<td  class=\"link\" align=\"right\"> | </td>\n";
2892                                } elsif ($status eq 'D') {
2893                                        print "<td class=\"link\">" .
2894                                              $cgi->a({-href => href(action=>"blob",
2895                                                                     hash_base=>$hash,
2896                                                                     hash=>$from_hash,
2897                                                                     file_name=>$from_path)},
2898                                                      "blob" . ($i+1)) .
2899                                              " | </td>\n";
2900                                } else {
2901                                        if ($diff->{'to_id'} eq $from_hash) {
2902                                                print "<td class=\"link nochange\">";
2903                                        } else {
2904                                                print "<td class=\"link\">";
2905                                        }
2906                                        print $cgi->a({-href => href(action=>"blobdiff",
2907                                                                     hash=>$diff->{'to_id'},
2908                                                                     hash_parent=>$from_hash,
2909                                                                     hash_base=>$hash,
2910                                                                     hash_parent_base=>$hash_parent,
2911                                                                     file_name=>$diff->{'to_file'},
2912                                                                     file_parent=>$from_path)},
2913                                                      "diff" . ($i+1)) .
2914                                              " | </td>\n";
2915                                }
2916                        }
2917
2918                        print "<td class=\"link\">";
2919                        if ($not_deleted) {
2920                                print $cgi->a({-href => href(action=>"blob",
2921                                                             hash=>$diff->{'to_id'},
2922                                                             file_name=>$diff->{'to_file'},
2923                                                             hash_base=>$hash)},
2924                                              "blob");
2925                                print " | " if ($has_history);
2926                        }
2927                        if ($has_history) {
2928                                print $cgi->a({-href => href(action=>"history",
2929                                                             file_name=>$diff->{'to_file'},
2930                                                             hash_base=>$hash)},
2931                                              "history");
2932                        }
2933                        print "</td>\n";
2934
2935                        print "</tr>\n";
2936                        next; # instead of 'else' clause, to avoid extra indent
2937                }
2938                # else ordinary diff
2939
2940                my ($to_mode_oct, $to_mode_str, $to_file_type);
2941                my ($from_mode_oct, $from_mode_str, $from_file_type);
2942                if ($diff->{'to_mode'} ne ('0' x 6)) {
2943                        $to_mode_oct = oct $diff->{'to_mode'};
2944                        if (S_ISREG($to_mode_oct)) { # only for regular file
2945                                $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
2946                        }
2947                        $to_file_type = file_type($diff->{'to_mode'});
2948                }
2949                if ($diff->{'from_mode'} ne ('0' x 6)) {
2950                        $from_mode_oct = oct $diff->{'from_mode'};
2951                        if (S_ISREG($to_mode_oct)) { # only for regular file
2952                                $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
2953                        }
2954                        $from_file_type = file_type($diff->{'from_mode'});
2955                }
2956
2957                if ($diff->{'status'} eq "A") { # created
2958                        my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
2959                        $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
2960                        $mode_chng   .= "]</span>";
2961                        print "<td>";
2962                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2963                                                     hash_base=>$hash, file_name=>$diff->{'file'}),
2964                                      -class => "list"}, esc_path($diff->{'file'}));
2965                        print "</td>\n";
2966                        print "<td>$mode_chng</td>\n";
2967                        print "<td class=\"link\">";
2968                        if ($action eq 'commitdiff') {
2969                                # link to patch
2970                                $patchno++;
2971                                print $cgi->a({-href => "#patch$patchno"}, "patch");
2972                                print " | ";
2973                        }
2974                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2975                                                     hash_base=>$hash, file_name=>$diff->{'file'})},
2976                                      "blob");
2977                        print "</td>\n";
2978
2979                } elsif ($diff->{'status'} eq "D") { # deleted
2980                        my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
2981                        print "<td>";
2982                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
2983                                                     hash_base=>$parent, file_name=>$diff->{'file'}),
2984                                       -class => "list"}, esc_path($diff->{'file'}));
2985                        print "</td>\n";
2986                        print "<td>$mode_chng</td>\n";
2987                        print "<td class=\"link\">";
2988                        if ($action eq 'commitdiff') {
2989                                # link to patch
2990                                $patchno++;
2991                                print $cgi->a({-href => "#patch$patchno"}, "patch");
2992                                print " | ";
2993                        }
2994                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
2995                                                     hash_base=>$parent, file_name=>$diff->{'file'})},
2996                                      "blob") . " | ";
2997                        if ($have_blame) {
2998                                print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
2999                                                             file_name=>$diff->{'file'})},
3000                                              "blame") . " | ";
3001                        }
3002                        print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
3003                                                     file_name=>$diff->{'file'})},
3004                                      "history");
3005                        print "</td>\n";
3006
3007                } elsif ($diff->{'status'} eq "M" || $diff->{'status'} eq "T") { # modified, or type changed
3008                        my $mode_chnge = "";
3009                        if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
3010                                $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
3011                                if ($from_file_type ne $to_file_type) {
3012                                        $mode_chnge .= " from $from_file_type to $to_file_type";
3013                                }
3014                                if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
3015                                        if ($from_mode_str && $to_mode_str) {
3016                                                $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
3017                                        } elsif ($to_mode_str) {
3018                                                $mode_chnge .= " mode: $to_mode_str";
3019                                        }
3020                                }
3021                                $mode_chnge .= "]</span>\n";
3022                        }
3023                        print "<td>";
3024                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3025                                                     hash_base=>$hash, file_name=>$diff->{'file'}),
3026                                      -class => "list"}, esc_path($diff->{'file'}));
3027                        print "</td>\n";
3028                        print "<td>$mode_chnge</td>\n";
3029                        print "<td class=\"link\">";
3030                        if ($action eq 'commitdiff') {
3031                                # link to patch
3032                                $patchno++;
3033                                print $cgi->a({-href => "#patch$patchno"}, "patch") .
3034                                      " | ";
3035                        } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
3036                                # "commit" view and modified file (not onlu mode changed)
3037                                print $cgi->a({-href => href(action=>"blobdiff",
3038                                                             hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
3039                                                             hash_base=>$hash, hash_parent_base=>$parent,
3040                                                             file_name=>$diff->{'file'})},
3041                                              "diff") .
3042                                      " | ";
3043                        }
3044                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3045                                                     hash_base=>$hash, file_name=>$diff->{'file'})},
3046                                       "blob") . " | ";
3047                        if ($have_blame) {
3048                                print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
3049                                                             file_name=>$diff->{'file'})},
3050                                              "blame") . " | ";
3051                        }
3052                        print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
3053                                                     file_name=>$diff->{'file'})},
3054                                      "history");
3055                        print "</td>\n";
3056
3057                } elsif ($diff->{'status'} eq "R" || $diff->{'status'} eq "C") { # renamed or copied
3058                        my %status_name = ('R' => 'moved', 'C' => 'copied');
3059                        my $nstatus = $status_name{$diff->{'status'}};
3060                        my $mode_chng = "";
3061                        if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
3062                                # mode also for directories, so we cannot use $to_mode_str
3063                                $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
3064                        }
3065                        print "<td>" .
3066                              $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
3067                                                     hash=>$diff->{'to_id'}, file_name=>$diff->{'to_file'}),
3068                                      -class => "list"}, esc_path($diff->{'to_file'})) . "</td>\n" .
3069                              "<td><span class=\"file_status $nstatus\">[$nstatus from " .
3070                              $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
3071                                                     hash=>$diff->{'from_id'}, file_name=>$diff->{'from_file'}),
3072                                      -class => "list"}, esc_path($diff->{'from_file'})) .
3073                              " with " . (int $diff->{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
3074                              "<td class=\"link\">";
3075                        if ($action eq 'commitdiff') {
3076                                # link to patch
3077                                $patchno++;
3078                                print $cgi->a({-href => "#patch$patchno"}, "patch") .
3079                                      " | ";
3080                        } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
3081                                # "commit" view and modified file (not only pure rename or copy)
3082                                print $cgi->a({-href => href(action=>"blobdiff",
3083                                                             hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
3084                                                             hash_base=>$hash, hash_parent_base=>$parent,
3085                                                             file_name=>$diff->{'to_file'}, file_parent=>$diff->{'from_file'})},
3086                                              "diff") .
3087                                      " | ";
3088                        }
3089                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3090                                                     hash_base=>$parent, file_name=>$diff->{'to_file'})},
3091                                      "blob") . " | ";
3092                        if ($have_blame) {
3093                                print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
3094                                                             file_name=>$diff->{'to_file'})},
3095                                              "blame") . " | ";
3096                        }
3097                        print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
3098                                                    file_name=>$diff->{'to_file'})},
3099                                      "history");
3100                        print "</td>\n";
3101
3102                } # we should not encounter Unmerged (U) or Unknown (X) status
3103                print "</tr>\n";
3104        }
3105        print "</tbody>" if $has_header;
3106        print "</table>\n";
3107}
3108
3109sub git_patchset_body {
3110        my ($fd, $difftree, $hash, @hash_parents) = @_;
3111        my ($hash_parent) = $hash_parents[0];
3112
3113        my $patch_idx = 0;
3114        my $patch_number = 0;
3115        my $patch_line;
3116        my $diffinfo;
3117        my (%from, %to);
3118
3119        print "<div class=\"patchset\">\n";
3120
3121        # skip to first patch
3122        while ($patch_line = <$fd>) {
3123                chomp $patch_line;
3124
3125                last if ($patch_line =~ m/^diff /);
3126        }
3127
3128 PATCH:
3129        while ($patch_line) {
3130                my @diff_header;
3131                my ($from_id, $to_id);
3132
3133                # git diff header
3134                #assert($patch_line =~ m/^diff /) if DEBUG;
3135                #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
3136                $patch_number++;
3137                push @diff_header, $patch_line;
3138
3139                # extended diff header
3140        EXTENDED_HEADER:
3141                while ($patch_line = <$fd>) {
3142                        chomp $patch_line;
3143
3144                        last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
3145
3146                        if ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
3147                                $from_id = $1;
3148                                $to_id   = $2;
3149                        } elsif ($patch_line =~ m/^index ((?:[0-9a-fA-F]{40},)+[0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
3150                                $from_id = [ split(',', $1) ];
3151                                $to_id   = $2;
3152                        }
3153
3154                        push @diff_header, $patch_line;
3155                }
3156                my $last_patch_line = $patch_line;
3157
3158                # check if current patch belong to current raw line
3159                # and parse raw git-diff line if needed
3160                if (defined $diffinfo &&
3161                    defined $from_id && defined $to_id &&
3162                    from_ids_eq($diffinfo->{'from_id'}, $from_id) &&
3163                    $diffinfo->{'to_id'} eq $to_id) {
3164                        # this is continuation of a split patch
3165                        print "<div class=\"patch cont\">\n";
3166                } else {
3167                        # advance raw git-diff output if needed
3168                        $patch_idx++ if defined $diffinfo;
3169
3170                        # compact combined diff output can have some patches skipped
3171                        # find which patch (using pathname of result) we are at now
3172                        my $to_name;
3173                        if ($diff_header[0] =~ m!^diff --cc "?(.*)"?$!) {
3174                                $to_name = $1;
3175                        }
3176
3177                        do {
3178                                # read and prepare patch information
3179                                if (ref($difftree->[$patch_idx]) eq "HASH") {
3180                                        # pre-parsed (or generated by hand)
3181                                        $diffinfo = $difftree->[$patch_idx];
3182                                } else {
3183                                        $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
3184                                }
3185
3186                                # check if current raw line has no patch (it got simplified)
3187                                if (defined $to_name && $to_name ne $diffinfo->{'to_file'}) {
3188                                        print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
3189                                              format_diff_cc_simplified($diffinfo, @hash_parents) .
3190                                              "</div>\n";  # class="patch"
3191
3192                                        $patch_idx++;
3193                                        $patch_number++;
3194                                }
3195                        } until (!defined $to_name || $to_name eq $diffinfo->{'to_file'} ||
3196                                 $patch_idx > $#$difftree);
3197                        # modifies %from, %to hashes
3198                        parse_from_to_diffinfo($diffinfo, \%from, \%to, @hash_parents);
3199                        if ($diffinfo->{'nparents'}) {
3200                                # combined diff
3201                                $from{'file'} = [];
3202                                $from{'href'} = [];
3203                                fill_from_file_info($diffinfo, @hash_parents)
3204                                        unless exists $diffinfo->{'from_file'};
3205                                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
3206                                        $from{'file'}[$i] = $diffinfo->{'from_file'}[$i] || $diffinfo->{'to_file'};
3207                                        if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
3208                                                $from{'href'}[$i] = href(action=>"blob",
3209                                                                         hash_base=>$hash_parents[$i],
3210                                                                         hash=>$diffinfo->{'from_id'}[$i],
3211                                                                         file_name=>$from{'file'}[$i]);
3212                                        } else {
3213                                                $from{'href'}[$i] = undef;
3214                                        }
3215                                }
3216                        } else {
3217                                $from{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
3218                                if ($diffinfo->{'status'} ne "A") { # not new (added) file
3219                                        $from{'href'} = href(action=>"blob", hash_base=>$hash_parent,
3220                                                             hash=>$diffinfo->{'from_id'},
3221                                                             file_name=>$from{'file'});
3222                                } else {
3223                                        delete $from{'href'};
3224                                }
3225                        }
3226
3227                        $to{'file'} = $diffinfo->{'to_file'} || $diffinfo->{'file'};
3228                        if (!is_deleted($diffinfo)) { # file exists in result
3229                                $to{'href'} = href(action=>"blob", hash_base=>$hash,
3230                                                   hash=>$diffinfo->{'to_id'},
3231                                                   file_name=>$to{'file'});
3232                        } else {
3233                                delete $to{'href'};
3234                        }
3235                        # this is first patch for raw difftree line with $patch_idx index
3236                        # we index @$difftree array from 0, but number patches from 1
3237                        print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
3238                }
3239
3240                # print "git diff" header
3241                $patch_line = shift @diff_header;
3242                print format_git_diff_header_line($patch_line, $diffinfo,
3243                                                  \%from, \%to);
3244
3245                # print extended diff header
3246                print "<div class=\"diff extended_header\">\n" if (@diff_header > 0);
3247        EXTENDED_HEADER:
3248                foreach $patch_line (@diff_header) {
3249                        print format_extended_diff_header_line($patch_line, $diffinfo,
3250                                                               \%from, \%to);
3251                }
3252                print "</div>\n"  if (@diff_header > 0); # class="diff extended_header"
3253
3254                # from-file/to-file diff header
3255                $patch_line = $last_patch_line;
3256                if (! $patch_line) {
3257                        print "</div>\n"; # class="patch"
3258                        last PATCH;
3259                }
3260                next PATCH if ($patch_line =~ m/^diff /);
3261                #assert($patch_line =~ m/^---/) if DEBUG;
3262                #assert($patch_line eq $last_patch_line) if DEBUG;
3263
3264                $patch_line = <$fd>;
3265                chomp $patch_line;
3266                #assert($patch_line =~ m/^\+\+\+/) if DEBUG;
3267
3268                print format_diff_from_to_header($last_patch_line, $patch_line,
3269                                                 $diffinfo, \%from, \%to,
3270                                                 @hash_parents);
3271
3272                # the patch itself
3273        LINE:
3274                while ($patch_line = <$fd>) {
3275                        chomp $patch_line;
3276
3277                        next PATCH if ($patch_line =~ m/^diff /);
3278
3279                        print format_diff_line($patch_line, \%from, \%to);
3280                }
3281
3282        } continue {
3283                print "</div>\n"; # class="patch"
3284        }
3285
3286        # for compact combined (--cc) format, with chunk and patch simpliciaction
3287        # patchset might be empty, but there might be unprocessed raw lines
3288        for ($patch_idx++ if $patch_number > 0;
3289             $patch_idx < @$difftree;
3290             $patch_idx++) {
3291                # read and prepare patch information
3292                if (ref($difftree->[$patch_idx]) eq "HASH") {
3293                        # pre-parsed (or generated by hand)
3294                        $diffinfo = $difftree->[$patch_idx];
3295                } else {
3296                        $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
3297                }
3298
3299                # generate anchor for "patch" links in difftree / whatchanged part
3300                print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
3301                      format_diff_cc_simplified($diffinfo, @hash_parents) .
3302                      "</div>\n";  # class="patch"
3303
3304                $patch_number++;
3305        }
3306
3307        if ($patch_number == 0) {
3308                if (@hash_parents > 1) {
3309                        print "<div class=\"diff nodifferences\">Trivial merge</div>\n";
3310                } else {
3311                        print "<div class=\"diff nodifferences\">No differences found</div>\n";
3312                }
3313        }
3314
3315        print "</div>\n"; # class="patchset"
3316}
3317
3318# . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3319
3320sub git_project_list_body {
3321        my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
3322
3323        my ($check_forks) = gitweb_check_feature('forks');
3324
3325        my @projects;
3326        foreach my $pr (@$projlist) {
3327                my (@aa) = git_get_last_activity($pr->{'path'});
3328                unless (@aa) {
3329                        next;
3330                }
3331                ($pr->{'age'}, $pr->{'age_string'}) = @aa;
3332                if (!defined $pr->{'descr'}) {
3333                        my $descr = git_get_project_description($pr->{'path'}) || "";
3334                        $pr->{'descr_long'} = to_utf8($descr);
3335                        $pr->{'descr'} = chop_str($descr, $projects_list_description_width, 5);
3336                }
3337                if (!defined $pr->{'owner'}) {
3338                        $pr->{'owner'} = git_get_project_owner("$pr->{'path'}") || "";
3339                }
3340                if ($check_forks) {
3341                        my $pname = $pr->{'path'};
3342                        if (($pname =~ s/\.git$//) &&
3343                            ($pname !~ /\/$/) &&
3344                            (-d "$projectroot/$pname")) {
3345                                $pr->{'forks'} = "-d $projectroot/$pname";
3346                        }
3347                        else {
3348                                $pr->{'forks'} = 0;
3349                        }
3350                }
3351                push @projects, $pr;
3352        }
3353
3354        $order ||= $default_projects_order;
3355        $from = 0 unless defined $from;
3356        $to = $#projects if (!defined $to || $#projects < $to);
3357
3358        print "<table class=\"project_list\">\n";
3359        unless ($no_header) {
3360                print "<tr>\n";
3361                if ($check_forks) {
3362                        print "<th></th>\n";
3363                }
3364                if ($order eq "project") {
3365                        @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
3366                        print "<th>Project</th>\n";
3367                } else {
3368                        print "<th>" .
3369                              $cgi->a({-href => href(project=>undef, order=>'project'),
3370                                       -class => "header"}, "Project") .
3371                              "</th>\n";
3372                }
3373                if ($order eq "descr") {
3374                        @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
3375                        print "<th>Description</th>\n";
3376                } else {
3377                        print "<th>" .
3378                              $cgi->a({-href => href(project=>undef, order=>'descr'),
3379                                       -class => "header"}, "Description") .
3380                              "</th>\n";
3381                }
3382                if ($order eq "owner") {
3383                        @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
3384                        print "<th>Owner</th>\n";
3385                } else {
3386                        print "<th>" .
3387                              $cgi->a({-href => href(project=>undef, order=>'owner'),
3388                                       -class => "header"}, "Owner") .
3389                              "</th>\n";
3390                }
3391                if ($order eq "age") {
3392                        @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
3393                        print "<th>Last Change</th>\n";
3394                } else {
3395                        print "<th>" .
3396                              $cgi->a({-href => href(project=>undef, order=>'age'),
3397                                       -class => "header"}, "Last Change") .
3398                              "</th>\n";
3399                }
3400                print "<th></th>\n" .
3401                      "</tr>\n";
3402        }
3403        my $alternate = 1;
3404        for (my $i = $from; $i <= $to; $i++) {
3405                my $pr = $projects[$i];
3406                if ($alternate) {
3407                        print "<tr class=\"dark\">\n";
3408                } else {
3409                        print "<tr class=\"light\">\n";
3410                }
3411                $alternate ^= 1;
3412                if ($check_forks) {
3413                        print "<td>";
3414                        if ($pr->{'forks'}) {
3415                                print "<!-- $pr->{'forks'} -->\n";
3416                                print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
3417                        }
3418                        print "</td>\n";
3419                }
3420                print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3421                                        -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
3422                      "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3423                                        -class => "list", -title => $pr->{'descr_long'}},
3424                                        esc_html($pr->{'descr'})) . "</td>\n" .
3425                      "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
3426                print "<td class=\"". age_class($pr->{'age'}) . "\">" .
3427                      (defined $pr->{'age_string'} ? $pr->{'age_string'} : "No commits") . "</td>\n" .
3428                      "<td class=\"link\">" .
3429                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
3430                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
3431                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
3432                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
3433                      ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
3434                      "</td>\n" .
3435                      "</tr>\n";
3436        }
3437        if (defined $extra) {
3438                print "<tr>\n";
3439                if ($check_forks) {
3440                        print "<td></td>\n";
3441                }
3442                print "<td colspan=\"5\">$extra</td>\n" .
3443                      "</tr>\n";
3444        }
3445        print "</table>\n";
3446}
3447
3448sub git_shortlog_body {
3449        # uses global variable $project
3450        my ($commitlist, $from, $to, $refs, $extra) = @_;
3451
3452        $from = 0 unless defined $from;
3453        $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3454
3455        print "<table class=\"shortlog\" cellspacing=\"0\">\n";
3456        my $alternate = 1;
3457        for (my $i = $from; $i <= $to; $i++) {
3458                my %co = %{$commitlist->[$i]};
3459                my $commit = $co{'id'};
3460                my $ref = format_ref_marker($refs, $commit);
3461                if ($alternate) {
3462                        print "<tr class=\"dark\">\n";
3463                } else {
3464                        print "<tr class=\"light\">\n";
3465                }
3466                $alternate ^= 1;
3467                # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
3468                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3469                      "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
3470                      "<td>";
3471                print format_subject_html($co{'title'}, $co{'title_short'},
3472                                          href(action=>"commit", hash=>$commit), $ref);
3473                print "</td>\n" .
3474                      "<td class=\"link\">" .
3475                      $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
3476                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
3477                      $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
3478                my $snapshot_links = format_snapshot_links($commit);
3479                if (defined $snapshot_links) {
3480                        print " | " . $snapshot_links;
3481                }
3482                print "</td>\n" .
3483                      "</tr>\n";
3484        }
3485        if (defined $extra) {
3486                print "<tr>\n" .
3487                      "<td colspan=\"4\">$extra</td>\n" .
3488                      "</tr>\n";
3489        }
3490        print "</table>\n";
3491}
3492
3493sub git_history_body {
3494        # Warning: assumes constant type (blob or tree) during history
3495        my ($commitlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
3496
3497        $from = 0 unless defined $from;
3498        $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
3499
3500        print "<table class=\"history\" cellspacing=\"0\">\n";
3501        my $alternate = 1;
3502        for (my $i = $from; $i <= $to; $i++) {
3503                my %co = %{$commitlist->[$i]};
3504                if (!%co) {
3505                        next;
3506                }
3507                my $commit = $co{'id'};
3508
3509                my $ref = format_ref_marker($refs, $commit);
3510
3511                if ($alternate) {
3512                        print "<tr class=\"dark\">\n";
3513                } else {
3514                        print "<tr class=\"light\">\n";
3515                }
3516                $alternate ^= 1;
3517                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3518                      # shortlog uses      chop_str($co{'author_name'}, 10)
3519                      "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
3520                      "<td>";
3521                # originally git_history used chop_str($co{'title'}, 50)
3522                print format_subject_html($co{'title'}, $co{'title_short'},
3523                                          href(action=>"commit", hash=>$commit), $ref);
3524                print "</td>\n" .
3525                      "<td class=\"link\">" .
3526                      $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
3527                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
3528
3529                if ($ftype eq 'blob') {
3530                        my $blob_current = git_get_hash_by_path($hash_base, $file_name);
3531                        my $blob_parent  = git_get_hash_by_path($commit, $file_name);
3532                        if (defined $blob_current && defined $blob_parent &&
3533                                        $blob_current ne $blob_parent) {
3534                                print " | " .
3535                                        $cgi->a({-href => href(action=>"blobdiff",
3536                                                               hash=>$blob_current, hash_parent=>$blob_parent,
3537                                                               hash_base=>$hash_base, hash_parent_base=>$commit,
3538                                                               file_name=>$file_name)},
3539                                                "diff to current");
3540                        }
3541                }
3542                print "</td>\n" .
3543                      "</tr>\n";
3544        }
3545        if (defined $extra) {
3546                print "<tr>\n" .
3547                      "<td colspan=\"4\">$extra</td>\n" .
3548                      "</tr>\n";
3549        }
3550        print "</table>\n";
3551}
3552
3553sub git_tags_body {
3554        # uses global variable $project
3555        my ($taglist, $from, $to, $extra) = @_;
3556        $from = 0 unless defined $from;
3557        $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
3558
3559        print "<table class=\"tags\" cellspacing=\"0\">\n";
3560        my $alternate = 1;
3561        for (my $i = $from; $i <= $to; $i++) {
3562                my $entry = $taglist->[$i];
3563                my %tag = %$entry;
3564                my $comment = $tag{'subject'};
3565                my $comment_short;
3566                if (defined $comment) {
3567                        $comment_short = chop_str($comment, 30, 5);
3568                }
3569                if ($alternate) {
3570                        print "<tr class=\"dark\">\n";
3571                } else {
3572                        print "<tr class=\"light\">\n";
3573                }
3574                $alternate ^= 1;
3575                if (defined $tag{'age'}) {
3576                        print "<td><i>$tag{'age'}</i></td>\n";
3577                } else {
3578                        print "<td></td>\n";
3579                }
3580                print "<td>" .
3581                      $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
3582                               -class => "list name"}, esc_html($tag{'name'})) .
3583                      "</td>\n" .
3584                      "<td>";
3585                if (defined $comment) {
3586                        print format_subject_html($comment, $comment_short,
3587                                                  href(action=>"tag", hash=>$tag{'id'}));
3588                }
3589                print "</td>\n" .
3590                      "<td class=\"selflink\">";
3591                if ($tag{'type'} eq "tag") {
3592                        print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
3593                } else {
3594                        print "&nbsp;";
3595                }
3596                print "</td>\n" .
3597                      "<td class=\"link\">" . " | " .
3598                      $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
3599                if ($tag{'reftype'} eq "commit") {
3600                        print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
3601                              " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log");
3602                } elsif ($tag{'reftype'} eq "blob") {
3603                        print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
3604                }
3605                print "</td>\n" .
3606                      "</tr>";
3607        }
3608        if (defined $extra) {
3609                print "<tr>\n" .
3610                      "<td colspan=\"5\">$extra</td>\n" .
3611                      "</tr>\n";
3612        }
3613        print "</table>\n";
3614}
3615
3616sub git_heads_body {
3617        # uses global variable $project
3618        my ($headlist, $head, $from, $to, $extra) = @_;
3619        $from = 0 unless defined $from;
3620        $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
3621
3622        print "<table class=\"heads\" cellspacing=\"0\">\n";
3623        my $alternate = 1;
3624        for (my $i = $from; $i <= $to; $i++) {
3625                my $entry = $headlist->[$i];
3626                my %ref = %$entry;
3627                my $curr = $ref{'id'} eq $head;
3628                if ($alternate) {
3629                        print "<tr class=\"dark\">\n";
3630                } else {
3631                        print "<tr class=\"light\">\n";
3632                }
3633                $alternate ^= 1;
3634                print "<td><i>$ref{'age'}</i></td>\n" .
3635                      ($curr ? "<td class=\"current_head\">" : "<td>") .
3636                      $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'}),
3637                               -class => "list name"},esc_html($ref{'name'})) .
3638                      "</td>\n" .
3639                      "<td class=\"link\">" .
3640                      $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'})}, "shortlog") . " | " .
3641                      $cgi->a({-href => href(action=>"log", hash=>$ref{'name'})}, "log") . " | " .
3642                      $cgi->a({-href => href(action=>"tree", hash=>$ref{'name'}, hash_base=>$ref{'name'})}, "tree") .
3643                      "</td>\n" .
3644                      "</tr>";
3645        }
3646        if (defined $extra) {
3647                print "<tr>\n" .
3648                      "<td colspan=\"3\">$extra</td>\n" .
3649                      "</tr>\n";
3650        }
3651        print "</table>\n";
3652}
3653
3654sub git_search_grep_body {
3655        my ($commitlist, $from, $to, $extra) = @_;
3656        $from = 0 unless defined $from;
3657        $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3658
3659        print "<table class=\"grep\" cellspacing=\"0\">\n";
3660        my $alternate = 1;
3661        for (my $i = $from; $i <= $to; $i++) {
3662                my %co = %{$commitlist->[$i]};
3663                if (!%co) {
3664                        next;
3665                }
3666                my $commit = $co{'id'};
3667                if ($alternate) {
3668                        print "<tr class=\"dark\">\n";
3669                } else {
3670                        print "<tr class=\"light\">\n";
3671                }
3672                $alternate ^= 1;
3673                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3674                      "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3675                      "<td>" .
3676                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3677                               esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3678                my $comment = $co{'comment'};
3679                foreach my $line (@$comment) {
3680                        if ($line =~ m/^(.*)($search_regexp)(.*)$/i) {
3681                                my $lead = esc_html($1) || "";
3682                                $lead = chop_str($lead, 30, 10);
3683                                my $match = esc_html($2) || "";
3684                                my $trail = esc_html($3) || "";
3685                                $trail = chop_str($trail, 30, 10);
3686                                my $text = "$lead<span class=\"match\">$match</span>$trail";
3687                                print chop_str($text, 80, 5) . "<br/>\n";
3688                        }
3689                }
3690                print "</td>\n" .
3691                      "<td class=\"link\">" .
3692                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3693                      " | " .
3694                      $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3695                print "</td>\n" .
3696                      "</tr>\n";
3697        }
3698        if (defined $extra) {
3699                print "<tr>\n" .
3700                      "<td colspan=\"3\">$extra</td>\n" .
3701                      "</tr>\n";
3702        }
3703        print "</table>\n";
3704}
3705
3706## ======================================================================
3707## ======================================================================
3708## actions
3709
3710sub git_project_list {
3711        my $order = $cgi->param('o');
3712        if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3713                die_error(undef, "Unknown order parameter");
3714        }
3715
3716        my @list = git_get_projects_list();
3717        if (!@list) {
3718                die_error(undef, "No projects found");
3719        }
3720
3721        git_header_html();
3722        if (-f $home_text) {
3723                print "<div class=\"index_include\">\n";
3724                open (my $fd, $home_text);
3725                print <$fd>;
3726                close $fd;
3727                print "</div>\n";
3728        }
3729        git_project_list_body(\@list, $order);
3730        git_footer_html();
3731}
3732
3733sub git_forks {
3734        my $order = $cgi->param('o');
3735        if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3736                die_error(undef, "Unknown order parameter");
3737        }
3738
3739        my @list = git_get_projects_list($project);
3740        if (!@list) {
3741                die_error(undef, "No forks found");
3742        }
3743
3744        git_header_html();
3745        git_print_page_nav('','');
3746        git_print_header_div('summary', "$project forks");
3747        git_project_list_body(\@list, $order);
3748        git_footer_html();
3749}
3750
3751sub git_project_index {
3752        my @projects = git_get_projects_list($project);
3753
3754        print $cgi->header(
3755                -type => 'text/plain',
3756                -charset => 'utf-8',
3757                -content_disposition => 'inline; filename="index.aux"');
3758
3759        foreach my $pr (@projects) {
3760                if (!exists $pr->{'owner'}) {
3761                        $pr->{'owner'} = git_get_project_owner("$pr->{'path'}");
3762                }
3763
3764                my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
3765                # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
3766                $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3767                $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3768                $path  =~ s/ /\+/g;
3769                $owner =~ s/ /\+/g;
3770
3771                print "$path $owner\n";
3772        }
3773}
3774
3775sub git_summary {
3776        my $descr = git_get_project_description($project) || "none";
3777        my %co = parse_commit("HEAD");
3778        my %cd = %co ? parse_date($co{'committer_epoch'}, $co{'committer_tz'}) : ();
3779        my $head = $co{'id'};
3780
3781        my $owner = git_get_project_owner($project);
3782
3783        my $refs = git_get_references();
3784        # These get_*_list functions return one more to allow us to see if
3785        # there are more ...
3786        my @taglist  = git_get_tags_list(16);
3787        my @headlist = git_get_heads_list(16);
3788        my @forklist;
3789        my ($check_forks) = gitweb_check_feature('forks');
3790
3791        if ($check_forks) {
3792                @forklist = git_get_projects_list($project);
3793        }
3794
3795        git_header_html();
3796        git_print_page_nav('summary','', $head);
3797
3798        print "<div class=\"title\">&nbsp;</div>\n";
3799        print "<table cellspacing=\"0\">\n" .
3800              "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
3801              "<tr><td>owner</td><td>$owner</td></tr>\n";
3802        if (defined $cd{'rfc2822'}) {
3803                print "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
3804        }
3805
3806        # use per project git URL list in $projectroot/$project/cloneurl
3807        # or make project git URL from git base URL and project name
3808        my $url_tag = "URL";
3809        my @url_list = git_get_project_url_list($project);
3810        @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
3811        foreach my $git_url (@url_list) {
3812                next unless $git_url;
3813                print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
3814                $url_tag = "";
3815        }
3816        print "</table>\n";
3817
3818        if (-s "$projectroot/$project/README.html") {
3819                if (open my $fd, "$projectroot/$project/README.html") {
3820                        print "<div class=\"title\">readme</div>\n";
3821                        print $_ while (<$fd>);
3822                        close $fd;
3823                }
3824        }
3825
3826        # we need to request one more than 16 (0..15) to check if
3827        # those 16 are all
3828        my @commitlist = $head ? parse_commits($head, 17) : ();
3829        if (@commitlist) {
3830                git_print_header_div('shortlog');
3831                git_shortlog_body(\@commitlist, 0, 15, $refs,
3832                                  $#commitlist <=  15 ? undef :
3833                                  $cgi->a({-href => href(action=>"shortlog")}, "..."));
3834        }
3835
3836        if (@taglist) {
3837                git_print_header_div('tags');
3838                git_tags_body(\@taglist, 0, 15,
3839                              $#taglist <=  15 ? undef :
3840                              $cgi->a({-href => href(action=>"tags")}, "..."));
3841        }
3842
3843        if (@headlist) {
3844                git_print_header_div('heads');
3845                git_heads_body(\@headlist, $head, 0, 15,
3846                               $#headlist <= 15 ? undef :
3847                               $cgi->a({-href => href(action=>"heads")}, "..."));
3848        }
3849
3850        if (@forklist) {
3851                git_print_header_div('forks');
3852                git_project_list_body(\@forklist, undef, 0, 15,
3853                                      $#forklist <= 15 ? undef :
3854                                      $cgi->a({-href => href(action=>"forks")}, "..."),
3855                                      'noheader');
3856        }
3857
3858        git_footer_html();
3859}
3860
3861sub git_tag {
3862        my $head = git_get_head_hash($project);
3863        git_header_html();
3864        git_print_page_nav('','', $head,undef,$head);
3865        my %tag = parse_tag($hash);
3866
3867        if (! %tag) {
3868                die_error(undef, "Unknown tag object");
3869        }
3870
3871        git_print_header_div('commit', esc_html($tag{'name'}), $hash);
3872        print "<div class=\"title_text\">\n" .
3873              "<table cellspacing=\"0\">\n" .
3874              "<tr>\n" .
3875              "<td>object</td>\n" .
3876              "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3877                               $tag{'object'}) . "</td>\n" .
3878              "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3879                                              $tag{'type'}) . "</td>\n" .
3880              "</tr>\n";
3881        if (defined($tag{'author'})) {
3882                my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
3883                print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
3884                print "<tr><td></td><td>" . $ad{'rfc2822'} .
3885                        sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
3886                        "</td></tr>\n";
3887        }
3888        print "</table>\n\n" .
3889              "</div>\n";
3890        print "<div class=\"page_body\">";
3891        my $comment = $tag{'comment'};
3892        foreach my $line (@$comment) {
3893                chomp $line;
3894                print esc_html($line, -nbsp=>1) . "<br/>\n";
3895        }
3896        print "</div>\n";
3897        git_footer_html();
3898}
3899
3900sub git_blame2 {
3901        my $fd;
3902        my $ftype;
3903
3904        my ($have_blame) = gitweb_check_feature('blame');
3905        if (!$have_blame) {
3906                die_error('403 Permission denied', "Permission denied");
3907        }
3908        die_error('404 Not Found', "File name not defined") if (!$file_name);
3909        $hash_base ||= git_get_head_hash($project);
3910        die_error(undef, "Couldn't find base commit") unless ($hash_base);
3911        my %co = parse_commit($hash_base)
3912                or die_error(undef, "Reading commit failed");
3913        if (!defined $hash) {
3914                $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3915                        or die_error(undef, "Error looking up file");
3916        }
3917        $ftype = git_get_type($hash);
3918        if ($ftype !~ "blob") {
3919                die_error('400 Bad Request', "Object is not a blob");
3920        }
3921        open ($fd, "-|", git_cmd(), "blame", '-p', '--',
3922              $file_name, $hash_base)
3923                or die_error(undef, "Open git-blame failed");
3924        git_header_html();
3925        my $formats_nav =
3926                $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3927                        "blob") .
3928                " | " .
3929                $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3930                        "history") .
3931                " | " .
3932                $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3933                        "HEAD");
3934        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3935        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3936        git_print_page_path($file_name, $ftype, $hash_base);
3937        my @rev_color = (qw(light2 dark2));
3938        my $num_colors = scalar(@rev_color);
3939        my $current_color = 0;
3940        my $last_rev;
3941        print <<HTML;
3942<div class="page_body">
3943<table class="blame">
3944<tr><th>Commit</th><th>Line</th><th>Data</th></tr>
3945HTML
3946        my %metainfo = ();
3947        while (1) {
3948                $_ = <$fd>;
3949                last unless defined $_;
3950                my ($full_rev, $orig_lineno, $lineno, $group_size) =
3951                    /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
3952                if (!exists $metainfo{$full_rev}) {
3953                        $metainfo{$full_rev} = {};
3954                }
3955                my $meta = $metainfo{$full_rev};
3956                while (<$fd>) {
3957                        last if (s/^\t//);
3958                        if (/^(\S+) (.*)$/) {
3959                                $meta->{$1} = $2;
3960                        }
3961                }
3962                my $data = $_;
3963                chomp $data;
3964                my $rev = substr($full_rev, 0, 8);
3965                my $author = $meta->{'author'};
3966                my %date = parse_date($meta->{'author-time'},
3967                                      $meta->{'author-tz'});
3968                my $date = $date{'iso-tz'};
3969                if ($group_size) {
3970                        $current_color = ++$current_color % $num_colors;
3971                }
3972                print "<tr class=\"$rev_color[$current_color]\">\n";
3973                if ($group_size) {
3974                        print "<td class=\"sha1\"";
3975                        print " title=\"". esc_html($author) . ", $date\"";
3976                        print " rowspan=\"$group_size\"" if ($group_size > 1);
3977                        print ">";
3978                        print $cgi->a({-href => href(action=>"commit",
3979                                                     hash=>$full_rev,
3980                                                     file_name=>$file_name)},
3981                                      esc_html($rev));
3982                        print "</td>\n";
3983                }
3984                open (my $dd, "-|", git_cmd(), "rev-parse", "$full_rev^")
3985                        or die_error(undef, "Open git-rev-parse failed");
3986                my $parent_commit = <$dd>;
3987                close $dd;
3988                chomp($parent_commit);
3989                my $blamed = href(action => 'blame',
3990                                  file_name => $meta->{'filename'},
3991                                  hash_base => $parent_commit);
3992                print "<td class=\"linenr\">";
3993                print $cgi->a({ -href => "$blamed#l$orig_lineno",
3994                                -id => "l$lineno",
3995                                -class => "linenr" },
3996                              esc_html($lineno));
3997                print "</td>";
3998                print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
3999                print "</tr>\n";
4000        }
4001        print "</table>\n";
4002        print "</div>";
4003        close $fd
4004                or print "Reading blob failed\n";
4005        git_footer_html();
4006}
4007
4008sub git_blame {
4009        my $fd;
4010
4011        my ($have_blame) = gitweb_check_feature('blame');
4012        if (!$have_blame) {
4013                die_error('403 Permission denied', "Permission denied");
4014        }
4015        die_error('404 Not Found', "File name not defined") if (!$file_name);
4016        $hash_base ||= git_get_head_hash($project);
4017        die_error(undef, "Couldn't find base commit") unless ($hash_base);
4018        my %co = parse_commit($hash_base)
4019                or die_error(undef, "Reading commit failed");
4020        if (!defined $hash) {
4021                $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
4022                        or die_error(undef, "Error lookup file");
4023        }
4024        open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
4025                or die_error(undef, "Open git-annotate failed");
4026        git_header_html();
4027        my $formats_nav =
4028                $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
4029                        "blob") .
4030                " | " .
4031                $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
4032                        "history") .
4033                " | " .
4034                $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
4035                        "HEAD");
4036        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4037        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4038        git_print_page_path($file_name, 'blob', $hash_base);
4039        print "<div class=\"page_body\">\n";
4040        print <<HTML;
4041<table class="blame">
4042  <tr>
4043    <th>Commit</th>
4044    <th>Age</th>
4045    <th>Author</th>
4046    <th>Line</th>
4047    <th>Data</th>
4048  </tr>
4049HTML
4050        my @line_class = (qw(light dark));
4051        my $line_class_len = scalar (@line_class);
4052        my $line_class_num = $#line_class;
4053        while (my $line = <$fd>) {
4054                my $long_rev;
4055                my $short_rev;
4056                my $author;
4057                my $time;
4058                my $lineno;
4059                my $data;
4060                my $age;
4061                my $age_str;
4062                my $age_class;
4063
4064                chomp $line;
4065                $line_class_num = ($line_class_num + 1) % $line_class_len;
4066
4067                if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
4068                        $long_rev = $1;
4069                        $author   = $2;
4070                        $time     = $3;
4071                        $lineno   = $4;
4072                        $data     = $5;
4073                } else {
4074                        print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
4075                        next;
4076                }
4077                $short_rev  = substr ($long_rev, 0, 8);
4078                $age        = time () - $time;
4079                $age_str    = age_string ($age);
4080                $age_str    =~ s/ /&nbsp;/g;
4081                $age_class  = age_class($age);
4082                $author     = esc_html ($author);
4083                $author     =~ s/ /&nbsp;/g;
4084
4085                $data = untabify($data);
4086                $data = esc_html ($data);
4087
4088                print <<HTML;
4089  <tr class="$line_class[$line_class_num]">
4090    <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
4091    <td class="$age_class">$age_str</td>
4092    <td>$author</td>
4093    <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
4094    <td class="pre">$data</td>
4095  </tr>
4096HTML
4097        } # while (my $line = <$fd>)
4098        print "</table>\n\n";
4099        close $fd
4100                or print "Reading blob failed.\n";
4101        print "</div>";
4102        git_footer_html();
4103}
4104
4105sub git_tags {
4106        my $head = git_get_head_hash($project);
4107        git_header_html();
4108        git_print_page_nav('','', $head,undef,$head);
4109        git_print_header_div('summary', $project);
4110
4111        my @tagslist = git_get_tags_list();
4112        if (@tagslist) {
4113                git_tags_body(\@tagslist);
4114        }
4115        git_footer_html();
4116}
4117
4118sub git_heads {
4119        my $head = git_get_head_hash($project);
4120        git_header_html();
4121        git_print_page_nav('','', $head,undef,$head);
4122        git_print_header_div('summary', $project);
4123
4124        my @headslist = git_get_heads_list();
4125        if (@headslist) {
4126                git_heads_body(\@headslist, $head);
4127        }
4128        git_footer_html();
4129}
4130
4131sub git_blob_plain {
4132        my $expires;
4133
4134        if (!defined $hash) {
4135                if (defined $file_name) {
4136                        my $base = $hash_base || git_get_head_hash($project);
4137                        $hash = git_get_hash_by_path($base, $file_name, "blob")
4138                                or die_error(undef, "Error lookup file");
4139                } else {
4140                        die_error(undef, "No file name defined");
4141                }
4142        } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4143                # blobs defined by non-textual hash id's can be cached
4144                $expires = "+1d";
4145        }
4146
4147        my $type = shift;
4148        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
4149                or die_error(undef, "Couldn't cat $file_name, $hash");
4150
4151        $type ||= blob_mimetype($fd, $file_name);
4152
4153        # save as filename, even when no $file_name is given
4154        my $save_as = "$hash";
4155        if (defined $file_name) {
4156                $save_as = $file_name;
4157        } elsif ($type =~ m/^text\//) {
4158                $save_as .= '.txt';
4159        }
4160
4161        print $cgi->header(
4162                -type => "$type",
4163                -expires=>$expires,
4164                -content_disposition => 'inline; filename="' . "$save_as" . '"');
4165        undef $/;
4166        binmode STDOUT, ':raw';
4167        print <$fd>;
4168        binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
4169        $/ = "\n";
4170        close $fd;
4171}
4172
4173sub git_blob {
4174        my $expires;
4175
4176        if (!defined $hash) {
4177                if (defined $file_name) {
4178                        my $base = $hash_base || git_get_head_hash($project);
4179                        $hash = git_get_hash_by_path($base, $file_name, "blob")
4180                                or die_error(undef, "Error lookup file");
4181                } else {
4182                        die_error(undef, "No file name defined");
4183                }
4184        } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4185                # blobs defined by non-textual hash id's can be cached
4186                $expires = "+1d";
4187        }
4188
4189        my ($have_blame) = gitweb_check_feature('blame');
4190        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
4191                or die_error(undef, "Couldn't cat $file_name, $hash");
4192        my $mimetype = blob_mimetype($fd, $file_name);
4193        if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)!) {
4194                close $fd;
4195                return git_blob_plain($mimetype);
4196        }
4197        # we can have blame only for text/* mimetype
4198        $have_blame &&= ($mimetype =~ m!^text/!);
4199
4200        git_header_html(undef, $expires);
4201        my $formats_nav = '';
4202        if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4203                if (defined $file_name) {
4204                        if ($have_blame) {
4205                                $formats_nav .=
4206                                        $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
4207                                                               hash=>$hash, file_name=>$file_name)},
4208                                                "blame") .
4209                                        " | ";
4210                        }
4211                        $formats_nav .=
4212                                $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
4213                                                       hash=>$hash, file_name=>$file_name)},
4214                                        "history") .
4215                                " | " .
4216                                $cgi->a({-href => href(action=>"blob_plain",
4217                                                       hash=>$hash, file_name=>$file_name)},
4218                                        "raw") .
4219                                " | " .
4220                                $cgi->a({-href => href(action=>"blob",
4221                                                       hash_base=>"HEAD", file_name=>$file_name)},
4222                                        "HEAD");
4223                } else {
4224                        $formats_nav .=
4225                                $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
4226                }
4227                git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4228                git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4229        } else {
4230                print "<div class=\"page_nav\">\n" .
4231                      "<br/><br/></div>\n" .
4232                      "<div class=\"title\">$hash</div>\n";
4233        }
4234        git_print_page_path($file_name, "blob", $hash_base);
4235        print "<div class=\"page_body\">\n";
4236        if ($mimetype =~ m!^text/!) {
4237                my $nr;
4238                while (my $line = <$fd>) {
4239                        chomp $line;
4240                        $nr++;
4241                        $line = untabify($line);
4242                        printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
4243                               $nr, $nr, $nr, esc_html($line, -nbsp=>1);
4244                }
4245        } elsif ($mimetype =~ m!^image/!) {
4246                print qq!<img type="$mimetype"!;
4247                if ($file_name) {
4248                        print qq! alt="$file_name" title="$file_name"!;
4249                }
4250                print qq! src="! .
4251                      href(action=>"blob_plain", hash=>$hash,
4252                           hash_base=>$hash_base, file_name=>$file_name) .
4253                      qq!" />\n!;
4254        }
4255        close $fd
4256                or print "Reading blob failed.\n";
4257        print "</div>";
4258        git_footer_html();
4259}
4260
4261sub git_tree {
4262        if (!defined $hash_base) {
4263                $hash_base = "HEAD";
4264        }
4265        if (!defined $hash) {
4266                if (defined $file_name) {
4267                        $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
4268                } else {
4269                        $hash = $hash_base;
4270                }
4271        }
4272        $/ = "\0";
4273        open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
4274                or die_error(undef, "Open git-ls-tree failed");
4275        my @entries = map { chomp; $_ } <$fd>;
4276        close $fd or die_error(undef, "Reading tree failed");
4277        $/ = "\n";
4278
4279        my $refs = git_get_references();
4280        my $ref = format_ref_marker($refs, $hash_base);
4281        git_header_html();
4282        my $basedir = '';
4283        my ($have_blame) = gitweb_check_feature('blame');
4284        if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4285                my @views_nav = ();
4286                if (defined $file_name) {
4287                        push @views_nav,
4288                                $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
4289                                                       hash=>$hash, file_name=>$file_name)},
4290                                        "history"),
4291                                $cgi->a({-href => href(action=>"tree",
4292                                                       hash_base=>"HEAD", file_name=>$file_name)},
4293                                        "HEAD"),
4294                }
4295                my $snapshot_links = format_snapshot_links($hash);
4296                if (defined $snapshot_links) {
4297                        # FIXME: Should be available when we have no hash base as well.
4298                        push @views_nav, $snapshot_links;
4299                }
4300                git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
4301                git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
4302        } else {
4303                undef $hash_base;
4304                print "<div class=\"page_nav\">\n";
4305                print "<br/><br/></div>\n";
4306                print "<div class=\"title\">$hash</div>\n";
4307        }
4308        if (defined $file_name) {
4309                $basedir = $file_name;
4310                if ($basedir ne '' && substr($basedir, -1) ne '/') {
4311                        $basedir .= '/';
4312                }
4313        }
4314        git_print_page_path($file_name, 'tree', $hash_base);
4315        print "<div class=\"page_body\">\n";
4316        print "<table cellspacing=\"0\">\n";
4317        my $alternate = 1;
4318        # '..' (top directory) link if possible
4319        if (defined $hash_base &&
4320            defined $file_name && $file_name =~ m![^/]+$!) {
4321                if ($alternate) {
4322                        print "<tr class=\"dark\">\n";
4323                } else {
4324                        print "<tr class=\"light\">\n";
4325                }
4326                $alternate ^= 1;
4327
4328                my $up = $file_name;
4329                $up =~ s!/?[^/]+$!!;
4330                undef $up unless $up;
4331                # based on git_print_tree_entry
4332                print '<td class="mode">' . mode_str('040000') . "</td>\n";
4333                print '<td class="list">';
4334                print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
4335                                             file_name=>$up)},
4336                              "..");
4337                print "</td>\n";
4338                print "<td class=\"link\"></td>\n";
4339
4340                print "</tr>\n";
4341        }
4342        foreach my $line (@entries) {
4343                my %t = parse_ls_tree_line($line, -z => 1);
4344
4345                if ($alternate) {
4346                        print "<tr class=\"dark\">\n";
4347                } else {
4348                        print "<tr class=\"light\">\n";
4349                }
4350                $alternate ^= 1;
4351
4352                git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
4353
4354                print "</tr>\n";
4355        }
4356        print "</table>\n" .
4357              "</div>";
4358        git_footer_html();
4359}
4360
4361sub git_snapshot {
4362        my @supported_fmts = gitweb_check_feature('snapshot');
4363        @supported_fmts = filter_snapshot_fmts(@supported_fmts);
4364
4365        my $format = $cgi->param('sf');
4366        if (!@supported_fmts) {
4367                die_error('403 Permission denied', "Permission denied");
4368        }
4369        # default to first supported snapshot format
4370        $format ||= $supported_fmts[0];
4371        if ($format !~ m/^[a-z0-9]+$/) {
4372                die_error(undef, "Invalid snapshot format parameter");
4373        } elsif (!exists($known_snapshot_formats{$format})) {
4374                die_error(undef, "Unknown snapshot format");
4375        } elsif (!grep($_ eq $format, @supported_fmts)) {
4376                die_error(undef, "Unsupported snapshot format");
4377        }
4378
4379        if (!defined $hash) {
4380                $hash = git_get_head_hash($project);
4381        }
4382
4383        my $git_command = git_cmd_str();
4384        my $name = $project;
4385        $name =~ s,([^/])/*\.git$,$1,;
4386        $name = basename($name);
4387        my $filename = to_utf8($name);
4388        $name =~ s/\047/\047\\\047\047/g;
4389        my $cmd;
4390        $filename .= "-$hash$known_snapshot_formats{$format}{'suffix'}";
4391        $cmd = "$git_command archive " .
4392                "--format=$known_snapshot_formats{$format}{'format'} " .
4393                "--prefix=\'$name\'/ $hash";
4394        if (exists $known_snapshot_formats{$format}{'compressor'}) {
4395                $cmd .= ' | ' . join ' ', @{$known_snapshot_formats{$format}{'compressor'}};
4396        }
4397
4398        print $cgi->header(
4399                -type => $known_snapshot_formats{$format}{'type'},
4400                -content_disposition => 'inline; filename="' . "$filename" . '"',
4401                -status => '200 OK');
4402
4403        open my $fd, "-|", $cmd
4404                or die_error(undef, "Execute git-archive failed");
4405        binmode STDOUT, ':raw';
4406        print <$fd>;
4407        binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
4408        close $fd;
4409}
4410
4411sub git_log {
4412        my $head = git_get_head_hash($project);
4413        if (!defined $hash) {
4414                $hash = $head;
4415        }
4416        if (!defined $page) {
4417                $page = 0;
4418        }
4419        my $refs = git_get_references();
4420
4421        my @commitlist = parse_commits($hash, 101, (100 * $page));
4422
4423        my $paging_nav = format_paging_nav('log', $hash, $head, $page, (100 * ($page+1)));
4424
4425        git_header_html();
4426        git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
4427
4428        if (!@commitlist) {
4429                my %co = parse_commit($hash);
4430
4431                git_print_header_div('summary', $project);
4432                print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
4433        }
4434        my $to = ($#commitlist >= 99) ? (99) : ($#commitlist);
4435        for (my $i = 0; $i <= $to; $i++) {
4436                my %co = %{$commitlist[$i]};
4437                next if !%co;
4438                my $commit = $co{'id'};
4439                my $ref = format_ref_marker($refs, $commit);
4440                my %ad = parse_date($co{'author_epoch'});
4441                git_print_header_div('commit',
4442                               "<span class=\"age\">$co{'age_string'}</span>" .
4443                               esc_html($co{'title'}) . $ref,
4444                               $commit);
4445                print "<div class=\"title_text\">\n" .
4446                      "<div class=\"log_link\">\n" .
4447                      $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
4448                      " | " .
4449                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
4450                      " | " .
4451                      $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
4452                      "<br/>\n" .
4453                      "</div>\n" .
4454                      "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
4455                      "</div>\n";
4456
4457                print "<div class=\"log_body\">\n";
4458                git_print_log($co{'comment'}, -final_empty_line=> 1);
4459                print "</div>\n";
4460        }
4461        if ($#commitlist >= 100) {
4462                print "<div class=\"page_nav\">\n";
4463                print $cgi->a({-href => href(action=>"log", hash=>$hash, page=>$page+1),
4464                               -accesskey => "n", -title => "Alt-n"}, "next");
4465                print "</div>\n";
4466        }
4467        git_footer_html();
4468}
4469
4470sub git_commit {
4471        $hash ||= $hash_base || "HEAD";
4472        my %co = parse_commit($hash);
4473        if (!%co) {
4474                die_error(undef, "Unknown commit object");
4475        }
4476        my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4477        my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
4478
4479        my $parent  = $co{'parent'};
4480        my $parents = $co{'parents'}; # listref
4481
4482        # we need to prepare $formats_nav before any parameter munging
4483        my $formats_nav;
4484        if (!defined $parent) {
4485                # --root commitdiff
4486                $formats_nav .= '(initial)';
4487        } elsif (@$parents == 1) {
4488                # single parent commit
4489                $formats_nav .=
4490                        '(parent: ' .
4491                        $cgi->a({-href => href(action=>"commit",
4492                                               hash=>$parent)},
4493                                esc_html(substr($parent, 0, 7))) .
4494                        ')';
4495        } else {
4496                # merge commit
4497                $formats_nav .=
4498                        '(merge: ' .
4499                        join(' ', map {
4500                                $cgi->a({-href => href(action=>"commit",
4501                                                       hash=>$_)},
4502                                        esc_html(substr($_, 0, 7)));
4503                        } @$parents ) .
4504                        ')';
4505        }
4506
4507        if (!defined $parent) {
4508                $parent = "--root";
4509        }
4510        my @difftree;
4511        open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
4512                @diff_opts,
4513                (@$parents <= 1 ? $parent : '-c'),
4514                $hash, "--"
4515                or die_error(undef, "Open git-diff-tree failed");
4516        @difftree = map { chomp; $_ } <$fd>;
4517        close $fd or die_error(undef, "Reading git-diff-tree failed");
4518
4519        # non-textual hash id's can be cached
4520        my $expires;
4521        if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4522                $expires = "+1d";
4523        }
4524        my $refs = git_get_references();
4525        my $ref = format_ref_marker($refs, $co{'id'});
4526
4527        git_header_html(undef, $expires);
4528        git_print_page_nav('commit', '',
4529                           $hash, $co{'tree'}, $hash,
4530                           $formats_nav);
4531
4532        if (defined $co{'parent'}) {
4533                git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
4534        } else {
4535                git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
4536        }
4537        print "<div class=\"title_text\">\n" .
4538              "<table cellspacing=\"0\">\n";
4539        print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
4540              "<tr>" .
4541              "<td></td><td> $ad{'rfc2822'}";
4542        if ($ad{'hour_local'} < 6) {
4543                printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
4544                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4545        } else {
4546                printf(" (%02d:%02d %s)",
4547                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4548        }
4549        print "</td>" .
4550              "</tr>\n";
4551        print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
4552        print "<tr><td></td><td> $cd{'rfc2822'}" .
4553              sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
4554              "</td></tr>\n";
4555        print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
4556        print "<tr>" .
4557              "<td>tree</td>" .
4558              "<td class=\"sha1\">" .
4559              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
4560                       class => "list"}, $co{'tree'}) .
4561              "</td>" .
4562              "<td class=\"link\">" .
4563              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
4564                      "tree");
4565        my $snapshot_links = format_snapshot_links($hash);
4566        if (defined $snapshot_links) {
4567                print " | " . $snapshot_links;
4568        }
4569        print "</td>" .
4570              "</tr>\n";
4571
4572        foreach my $par (@$parents) {
4573                print "<tr>" .
4574                      "<td>parent</td>" .
4575                      "<td class=\"sha1\">" .
4576                      $cgi->a({-href => href(action=>"commit", hash=>$par),
4577                               class => "list"}, $par) .
4578                      "</td>" .
4579                      "<td class=\"link\">" .
4580                      $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
4581                      " | " .
4582                      $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
4583                      "</td>" .
4584                      "</tr>\n";
4585        }
4586        print "</table>".
4587              "</div>\n";
4588
4589        print "<div class=\"page_body\">\n";
4590        git_print_log($co{'comment'});
4591        print "</div>\n";
4592
4593        git_difftree_body(\@difftree, $hash, @$parents);
4594
4595        git_footer_html();
4596}
4597
4598sub git_object {
4599        # object is defined by:
4600        # - hash or hash_base alone
4601        # - hash_base and file_name
4602        my $type;
4603
4604        # - hash or hash_base alone
4605        if ($hash || ($hash_base && !defined $file_name)) {
4606                my $object_id = $hash || $hash_base;
4607
4608                my $git_command = git_cmd_str();
4609                open my $fd, "-|", "$git_command cat-file -t $object_id 2>/dev/null"
4610                        or die_error('404 Not Found', "Object does not exist");
4611                $type = <$fd>;
4612                chomp $type;
4613                close $fd
4614                        or die_error('404 Not Found', "Object does not exist");
4615
4616        # - hash_base and file_name
4617        } elsif ($hash_base && defined $file_name) {
4618                $file_name =~ s,/+$,,;
4619
4620                system(git_cmd(), "cat-file", '-e', $hash_base) == 0
4621                        or die_error('404 Not Found', "Base object does not exist");
4622
4623                # here errors should not hapen
4624                open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
4625                        or die_error(undef, "Open git-ls-tree failed");
4626                my $line = <$fd>;
4627                close $fd;
4628
4629                #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
4630                unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
4631                        die_error('404 Not Found', "File or directory for given base does not exist");
4632                }
4633                $type = $2;
4634                $hash = $3;
4635        } else {
4636                die_error('404 Not Found', "Not enough information to find object");
4637        }
4638
4639        print $cgi->redirect(-uri => href(action=>$type, -full=>1,
4640                                          hash=>$hash, hash_base=>$hash_base,
4641                                          file_name=>$file_name),
4642                             -status => '302 Found');
4643}
4644
4645sub git_blobdiff {
4646        my $format = shift || 'html';
4647
4648        my $fd;
4649        my @difftree;
4650        my %diffinfo;
4651        my $expires;
4652
4653        # preparing $fd and %diffinfo for git_patchset_body
4654        # new style URI
4655        if (defined $hash_base && defined $hash_parent_base) {
4656                if (defined $file_name) {
4657                        # read raw output
4658                        open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4659                                $hash_parent_base, $hash_base,
4660                                "--", (defined $file_parent ? $file_parent : ()), $file_name
4661                                or die_error(undef, "Open git-diff-tree failed");
4662                        @difftree = map { chomp; $_ } <$fd>;
4663                        close $fd
4664                                or die_error(undef, "Reading git-diff-tree failed");
4665                        @difftree
4666                                or die_error('404 Not Found', "Blob diff not found");
4667
4668                } elsif (defined $hash &&
4669                         $hash =~ /[0-9a-fA-F]{40}/) {
4670                        # try to find filename from $hash
4671
4672                        # read filtered raw output
4673                        open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4674                                $hash_parent_base, $hash_base, "--"
4675                                or die_error(undef, "Open git-diff-tree failed");
4676                        @difftree =
4677                                # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
4678                                # $hash == to_id
4679                                grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
4680                                map { chomp; $_ } <$fd>;
4681                        close $fd
4682                                or die_error(undef, "Reading git-diff-tree failed");
4683                        @difftree
4684                                or die_error('404 Not Found', "Blob diff not found");
4685
4686                } else {
4687                        die_error('404 Not Found', "Missing one of the blob diff parameters");
4688                }
4689
4690                if (@difftree > 1) {
4691                        die_error('404 Not Found', "Ambiguous blob diff specification");
4692                }
4693
4694                %diffinfo = parse_difftree_raw_line($difftree[0]);
4695                $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
4696                $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
4697
4698                $hash_parent ||= $diffinfo{'from_id'};
4699                $hash        ||= $diffinfo{'to_id'};
4700
4701                # non-textual hash id's can be cached
4702                if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
4703                    $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
4704                        $expires = '+1d';
4705                }
4706
4707                # open patch output
4708                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4709                        '-p', ($format eq 'html' ? "--full-index" : ()),
4710                        $hash_parent_base, $hash_base,
4711                        "--", (defined $file_parent ? $file_parent : ()), $file_name
4712                        or die_error(undef, "Open git-diff-tree failed");
4713        }
4714
4715        # old/legacy style URI
4716        if (!%diffinfo && # if new style URI failed
4717            defined $hash && defined $hash_parent) {
4718                # fake git-diff-tree raw output
4719                $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
4720                $diffinfo{'from_id'} = $hash_parent;
4721                $diffinfo{'to_id'}   = $hash;
4722                if (defined $file_name) {
4723                        if (defined $file_parent) {
4724                                $diffinfo{'status'} = '2';
4725                                $diffinfo{'from_file'} = $file_parent;
4726                                $diffinfo{'to_file'}   = $file_name;
4727                        } else { # assume not renamed
4728                                $diffinfo{'status'} = '1';
4729                                $diffinfo{'from_file'} = $file_name;
4730                                $diffinfo{'to_file'}   = $file_name;
4731                        }
4732                } else { # no filename given
4733                        $diffinfo{'status'} = '2';
4734                        $diffinfo{'from_file'} = $hash_parent;
4735                        $diffinfo{'to_file'}   = $hash;
4736                }
4737
4738                # non-textual hash id's can be cached
4739                if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
4740                    $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4741                        $expires = '+1d';
4742                }
4743
4744                # open patch output
4745                open $fd, "-|", git_cmd(), "diff", @diff_opts,
4746                        '-p', ($format eq 'html' ? "--full-index" : ()),
4747                        $hash_parent, $hash, "--"
4748                        or die_error(undef, "Open git-diff failed");
4749        } else  {
4750                die_error('404 Not Found', "Missing one of the blob diff parameters")
4751                        unless %diffinfo;
4752        }
4753
4754        # header
4755        if ($format eq 'html') {
4756                my $formats_nav =
4757                        $cgi->a({-href => href(action=>"blobdiff_plain",
4758                                               hash=>$hash, hash_parent=>$hash_parent,
4759                                               hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
4760                                               file_name=>$file_name, file_parent=>$file_parent)},
4761                                "raw");
4762                git_header_html(undef, $expires);
4763                if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4764                        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4765                        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4766                } else {
4767                        print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
4768                        print "<div class=\"title\">$hash vs $hash_parent</div>\n";
4769                }
4770                if (defined $file_name) {
4771                        git_print_page_path($file_name, "blob", $hash_base);
4772                } else {
4773                        print "<div class=\"page_path\"></div>\n";
4774                }
4775
4776        } elsif ($format eq 'plain') {
4777                print $cgi->header(
4778                        -type => 'text/plain',
4779                        -charset => 'utf-8',
4780                        -expires => $expires,
4781                        -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
4782
4783                print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4784
4785        } else {
4786                die_error(undef, "Unknown blobdiff format");
4787        }
4788
4789        # patch
4790        if ($format eq 'html') {
4791                print "<div class=\"page_body\">\n";
4792
4793                git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
4794                close $fd;
4795
4796                print "</div>\n"; # class="page_body"
4797                git_footer_html();
4798
4799        } else {
4800                while (my $line = <$fd>) {
4801                        $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
4802                        $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
4803
4804                        print $line;
4805
4806                        last if $line =~ m!^\+\+\+!;
4807                }
4808                local $/ = undef;
4809                print <$fd>;
4810                close $fd;
4811        }
4812}
4813
4814sub git_blobdiff_plain {
4815        git_blobdiff('plain');
4816}
4817
4818sub git_commitdiff {
4819        my $format = shift || 'html';
4820        $hash ||= $hash_base || "HEAD";
4821        my %co = parse_commit($hash);
4822        if (!%co) {
4823                die_error(undef, "Unknown commit object");
4824        }
4825
4826        # choose format for commitdiff for merge
4827        if (! defined $hash_parent && @{$co{'parents'}} > 1) {
4828                $hash_parent = '--cc';
4829        }
4830        # we need to prepare $formats_nav before almost any parameter munging
4831        my $formats_nav;
4832        if ($format eq 'html') {
4833                $formats_nav =
4834                        $cgi->a({-href => href(action=>"commitdiff_plain",
4835                                               hash=>$hash, hash_parent=>$hash_parent)},
4836                                "raw");
4837
4838                if (defined $hash_parent &&
4839                    $hash_parent ne '-c' && $hash_parent ne '--cc') {
4840                        # commitdiff with two commits given
4841                        my $hash_parent_short = $hash_parent;
4842                        if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4843                                $hash_parent_short = substr($hash_parent, 0, 7);
4844                        }
4845                        $formats_nav .=
4846                                ' (from';
4847                        for (my $i = 0; $i < @{$co{'parents'}}; $i++) {
4848                                if ($co{'parents'}[$i] eq $hash_parent) {
4849                                        $formats_nav .= ' parent ' . ($i+1);
4850                                        last;
4851                                }
4852                        }
4853                        $formats_nav .= ': ' .
4854                                $cgi->a({-href => href(action=>"commitdiff",
4855                                                       hash=>$hash_parent)},
4856                                        esc_html($hash_parent_short)) .
4857                                ')';
4858                } elsif (!$co{'parent'}) {
4859                        # --root commitdiff
4860                        $formats_nav .= ' (initial)';
4861                } elsif (scalar @{$co{'parents'}} == 1) {
4862                        # single parent commit
4863                        $formats_nav .=
4864                                ' (parent: ' .
4865                                $cgi->a({-href => href(action=>"commitdiff",
4866                                                       hash=>$co{'parent'})},
4867                                        esc_html(substr($co{'parent'}, 0, 7))) .
4868                                ')';
4869                } else {
4870                        # merge commit
4871                        if ($hash_parent eq '--cc') {
4872                                $formats_nav .= ' | ' .
4873                                        $cgi->a({-href => href(action=>"commitdiff",
4874                                                               hash=>$hash, hash_parent=>'-c')},
4875                                                'combined');
4876                        } else { # $hash_parent eq '-c'
4877                                $formats_nav .= ' | ' .
4878                                        $cgi->a({-href => href(action=>"commitdiff",
4879                                                               hash=>$hash, hash_parent=>'--cc')},
4880                                                'compact');
4881                        }
4882                        $formats_nav .=
4883                                ' (merge: ' .
4884                                join(' ', map {
4885                                        $cgi->a({-href => href(action=>"commitdiff",
4886                                                               hash=>$_)},
4887                                                esc_html(substr($_, 0, 7)));
4888                                } @{$co{'parents'}} ) .
4889                                ')';
4890                }
4891        }
4892
4893        my $hash_parent_param = $hash_parent;
4894        if (!defined $hash_parent_param) {
4895                # --cc for multiple parents, --root for parentless
4896                $hash_parent_param =
4897                        @{$co{'parents'}} > 1 ? '--cc' : $co{'parent'} || '--root';
4898        }
4899
4900        # read commitdiff
4901        my $fd;
4902        my @difftree;
4903        if ($format eq 'html') {
4904                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4905                        "--no-commit-id", "--patch-with-raw", "--full-index",
4906                        $hash_parent_param, $hash, "--"
4907                        or die_error(undef, "Open git-diff-tree failed");
4908
4909                while (my $line = <$fd>) {
4910                        chomp $line;
4911                        # empty line ends raw part of diff-tree output
4912                        last unless $line;
4913                        push @difftree, scalar parse_difftree_raw_line($line);
4914                }
4915
4916        } elsif ($format eq 'plain') {
4917                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4918                        '-p', $hash_parent_param, $hash, "--"
4919                        or die_error(undef, "Open git-diff-tree failed");
4920
4921        } else {
4922                die_error(undef, "Unknown commitdiff format");
4923        }
4924
4925        # non-textual hash id's can be cached
4926        my $expires;
4927        if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4928                $expires = "+1d";
4929        }
4930
4931        # write commit message
4932        if ($format eq 'html') {
4933                my $refs = git_get_references();
4934                my $ref = format_ref_marker($refs, $co{'id'});
4935
4936                git_header_html(undef, $expires);
4937                git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
4938                git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
4939                git_print_authorship(\%co);
4940                print "<div class=\"page_body\">\n";
4941                if (@{$co{'comment'}} > 1) {
4942                        print "<div class=\"log\">\n";
4943                        git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
4944                        print "</div>\n"; # class="log"
4945                }
4946
4947        } elsif ($format eq 'plain') {
4948                my $refs = git_get_references("tags");
4949                my $tagname = git_get_rev_name_tags($hash);
4950                my $filename = basename($project) . "-$hash.patch";
4951
4952                print $cgi->header(
4953                        -type => 'text/plain',
4954                        -charset => 'utf-8',
4955                        -expires => $expires,
4956                        -content_disposition => 'inline; filename="' . "$filename" . '"');
4957                my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4958                print <<TEXT;
4959From: $co{'author'}
4960Date: $ad{'rfc2822'} ($ad{'tz_local'})
4961Subject: $co{'title'}
4962TEXT
4963                print "X-Git-Tag: $tagname\n" if $tagname;
4964                print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4965
4966                foreach my $line (@{$co{'comment'}}) {
4967                        print "$line\n";
4968                }
4969                print "---\n\n";
4970        }
4971
4972        # write patch
4973        if ($format eq 'html') {
4974                my $use_parents = !defined $hash_parent ||
4975                        $hash_parent eq '-c' || $hash_parent eq '--cc';
4976                git_difftree_body(\@difftree, $hash,
4977                                  $use_parents ? @{$co{'parents'}} : $hash_parent);
4978                print "<br/>\n";
4979
4980                git_patchset_body($fd, \@difftree, $hash,
4981                                  $use_parents ? @{$co{'parents'}} : $hash_parent);
4982                close $fd;
4983                print "</div>\n"; # class="page_body"
4984                git_footer_html();
4985
4986        } elsif ($format eq 'plain') {
4987                local $/ = undef;
4988                print <$fd>;
4989                close $fd
4990                        or print "Reading git-diff-tree failed\n";
4991        }
4992}
4993
4994sub git_commitdiff_plain {
4995        git_commitdiff('plain');
4996}
4997
4998sub git_history {
4999        if (!defined $hash_base) {
5000                $hash_base = git_get_head_hash($project);
5001        }
5002        if (!defined $page) {
5003                $page = 0;
5004        }
5005        my $ftype;
5006        my %co = parse_commit($hash_base);
5007        if (!%co) {
5008                die_error(undef, "Unknown commit object");
5009        }
5010
5011        my $refs = git_get_references();
5012        my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
5013
5014        if (!defined $hash && defined $file_name) {
5015                $hash = git_get_hash_by_path($hash_base, $file_name);
5016        }
5017        if (defined $hash) {
5018                $ftype = git_get_type($hash);
5019        }
5020
5021        my @commitlist = parse_commits($hash_base, 101, (100 * $page), "--full-history", $file_name);
5022
5023        my $paging_nav = '';
5024        if ($page > 0) {
5025                $paging_nav .=
5026                        $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
5027                                               file_name=>$file_name)},
5028                                "first");
5029                $paging_nav .= " &sdot; " .
5030                        $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
5031                                               file_name=>$file_name, page=>$page-1),
5032                                 -accesskey => "p", -title => "Alt-p"}, "prev");
5033        } else {
5034                $paging_nav .= "first";
5035                $paging_nav .= " &sdot; prev";
5036        }
5037        if ($#commitlist >= 100) {
5038                $paging_nav .= " &sdot; " .
5039                        $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
5040                                               file_name=>$file_name, page=>$page+1),
5041                                 -accesskey => "n", -title => "Alt-n"}, "next");
5042        } else {
5043                $paging_nav .= " &sdot; next";
5044        }
5045        my $next_link = '';
5046        if ($#commitlist >= 100) {
5047                $next_link =
5048                        $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
5049                                               file_name=>$file_name, page=>$page+1),
5050                                 -accesskey => "n", -title => "Alt-n"}, "next");
5051        }
5052
5053        git_header_html();
5054        git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
5055        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
5056        git_print_page_path($file_name, $ftype, $hash_base);
5057
5058        git_history_body(\@commitlist, 0, 99,
5059                         $refs, $hash_base, $ftype, $next_link);
5060
5061        git_footer_html();
5062}
5063
5064sub git_search {
5065        my ($have_search) = gitweb_check_feature('search');
5066        if (!$have_search) {
5067                die_error('403 Permission denied', "Permission denied");
5068        }
5069        if (!defined $searchtext) {
5070                die_error(undef, "Text field empty");
5071        }
5072        if (!defined $hash) {
5073                $hash = git_get_head_hash($project);
5074        }
5075        my %co = parse_commit($hash);
5076        if (!%co) {
5077                die_error(undef, "Unknown commit object");
5078        }
5079        if (!defined $page) {
5080                $page = 0;
5081        }
5082
5083        $searchtype ||= 'commit';
5084        if ($searchtype eq 'pickaxe') {
5085                # pickaxe may take all resources of your box and run for several minutes
5086                # with every query - so decide by yourself how public you make this feature
5087                my ($have_pickaxe) = gitweb_check_feature('pickaxe');
5088                if (!$have_pickaxe) {
5089                        die_error('403 Permission denied', "Permission denied");
5090                }
5091        }
5092        if ($searchtype eq 'grep') {
5093                my ($have_grep) = gitweb_check_feature('grep');
5094                if (!$have_grep) {
5095                        die_error('403 Permission denied', "Permission denied");
5096                }
5097        }
5098
5099        git_header_html();
5100
5101        if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
5102                my $greptype;
5103                if ($searchtype eq 'commit') {
5104                        $greptype = "--grep=";
5105                } elsif ($searchtype eq 'author') {
5106                        $greptype = "--author=";
5107                } elsif ($searchtype eq 'committer') {
5108                        $greptype = "--committer=";
5109                }
5110                $greptype .= $search_regexp;
5111                my @commitlist = parse_commits($hash, 101, (100 * $page), $greptype);
5112
5113                my $paging_nav = '';
5114                if ($page > 0) {
5115                        $paging_nav .=
5116                                $cgi->a({-href => href(action=>"search", hash=>$hash,
5117                                                       searchtext=>$searchtext, searchtype=>$searchtype)},
5118                                        "first");
5119                        $paging_nav .= " &sdot; " .
5120                                $cgi->a({-href => href(action=>"search", hash=>$hash,
5121                                                       searchtext=>$searchtext, searchtype=>$searchtype,
5122                                                       page=>$page-1),
5123                                         -accesskey => "p", -title => "Alt-p"}, "prev");
5124                } else {
5125                        $paging_nav .= "first";
5126                        $paging_nav .= " &sdot; prev";
5127                }
5128                if ($#commitlist >= 100) {
5129                        $paging_nav .= " &sdot; " .
5130                                $cgi->a({-href => href(action=>"search", hash=>$hash,
5131                                                       searchtext=>$searchtext, searchtype=>$searchtype,
5132                                                       page=>$page+1),
5133                                         -accesskey => "n", -title => "Alt-n"}, "next");
5134                } else {
5135                        $paging_nav .= " &sdot; next";
5136                }
5137                my $next_link = '';
5138                if ($#commitlist >= 100) {
5139                        $next_link =
5140                                $cgi->a({-href => href(action=>"search", hash=>$hash,
5141                                                       searchtext=>$searchtext, searchtype=>$searchtype,
5142                                                       page=>$page+1),
5143                                         -accesskey => "n", -title => "Alt-n"}, "next");
5144                }
5145
5146                git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
5147                git_print_header_div('commit', esc_html($co{'title'}), $hash);
5148                git_search_grep_body(\@commitlist, 0, 99, $next_link);
5149        }
5150
5151        if ($searchtype eq 'pickaxe') {
5152                git_print_page_nav('','', $hash,$co{'tree'},$hash);
5153                git_print_header_div('commit', esc_html($co{'title'}), $hash);
5154
5155                print "<table cellspacing=\"0\">\n";
5156                my $alternate = 1;
5157                $/ = "\n";
5158                my $git_command = git_cmd_str();
5159                my $searchqtext = $searchtext;
5160                $searchqtext =~ s/'/'\\''/;
5161                open my $fd, "-|", "$git_command rev-list $hash | " .
5162                        "$git_command diff-tree -r --stdin -S\'$searchqtext\'";
5163                undef %co;
5164                my @files;
5165                while (my $line = <$fd>) {
5166                        if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
5167                                my %set;
5168                                $set{'file'} = $6;
5169                                $set{'from_id'} = $3;
5170                                $set{'to_id'} = $4;
5171                                $set{'id'} = $set{'to_id'};
5172                                if ($set{'id'} =~ m/0{40}/) {
5173                                        $set{'id'} = $set{'from_id'};
5174                                }
5175                                if ($set{'id'} =~ m/0{40}/) {
5176                                        next;
5177                                }
5178                                push @files, \%set;
5179                        } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
5180                                if (%co) {
5181                                        if ($alternate) {
5182                                                print "<tr class=\"dark\">\n";
5183                                        } else {
5184                                                print "<tr class=\"light\">\n";
5185                                        }
5186                                        $alternate ^= 1;
5187                                        print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
5188                                              "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
5189                                              "<td>" .
5190                                              $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
5191                                                      -class => "list subject"},
5192                                                      esc_html(chop_str($co{'title'}, 50)) . "<br/>");
5193                                        while (my $setref = shift @files) {
5194                                                my %set = %$setref;
5195                                                print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
5196                                                                             hash=>$set{'id'}, file_name=>$set{'file'}),
5197                                                              -class => "list"},
5198                                                              "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
5199                                                      "<br/>\n";
5200                                        }
5201                                        print "</td>\n" .
5202                                              "<td class=\"link\">" .
5203                                              $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
5204                                              " | " .
5205                                              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
5206                                        print "</td>\n" .
5207                                              "</tr>\n";
5208                                }
5209                                %co = parse_commit($1);
5210                        }
5211                }
5212                close $fd;
5213
5214                print "</table>\n";
5215        }
5216
5217        if ($searchtype eq 'grep') {
5218                git_print_page_nav('','', $hash,$co{'tree'},$hash);
5219                git_print_header_div('commit', esc_html($co{'title'}), $hash);
5220
5221                print "<table cellspacing=\"0\">\n";
5222                my $alternate = 1;
5223                my $matches = 0;
5224                $/ = "\n";
5225                open my $fd, "-|", git_cmd(), 'grep', '-n', '-i', '-E', $searchtext, $co{'tree'};
5226                my $lastfile = '';
5227                while (my $line = <$fd>) {
5228                        chomp $line;
5229                        my ($file, $lno, $ltext, $binary);
5230                        last if ($matches++ > 1000);
5231                        if ($line =~ /^Binary file (.+) matches$/) {
5232                                $file = $1;
5233                                $binary = 1;
5234                        } else {
5235                                (undef, $file, $lno, $ltext) = split(/:/, $line, 4);
5236                        }
5237                        if ($file ne $lastfile) {
5238                                $lastfile and print "</td></tr>\n";
5239                                if ($alternate++) {
5240                                        print "<tr class=\"dark\">\n";
5241                                } else {
5242                                        print "<tr class=\"light\">\n";
5243                                }
5244                                print "<td class=\"list\">".
5245                                        $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
5246                                                               file_name=>"$file"),
5247                                                -class => "list"}, esc_path($file));
5248                                print "</td><td>\n";
5249                                $lastfile = $file;
5250                        }
5251                        if ($binary) {
5252                                print "<div class=\"binary\">Binary file</div>\n";
5253                        } else {
5254                                $ltext = untabify($ltext);
5255                                if ($ltext =~ m/^(.*)($searchtext)(.*)$/i) {
5256                                        $ltext = esc_html($1, -nbsp=>1);
5257                                        $ltext .= '<span class="match">';
5258                                        $ltext .= esc_html($2, -nbsp=>1);
5259                                        $ltext .= '</span>';
5260                                        $ltext .= esc_html($3, -nbsp=>1);
5261                                } else {
5262                                        $ltext = esc_html($ltext, -nbsp=>1);
5263                                }
5264                                print "<div class=\"pre\">" .
5265                                        $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
5266                                                               file_name=>"$file").'#l'.$lno,
5267                                                -class => "linenr"}, sprintf('%4i', $lno))
5268                                        . ' ' .  $ltext . "</div>\n";
5269                        }
5270                }
5271                if ($lastfile) {
5272                        print "</td></tr>\n";
5273                        if ($matches > 1000) {
5274                                print "<div class=\"diff nodifferences\">Too many matches, listing trimmed</div>\n";
5275                        }
5276                } else {
5277                        print "<div class=\"diff nodifferences\">No matches found</div>\n";
5278                }
5279                close $fd;
5280
5281                print "</table>\n";
5282        }
5283        git_footer_html();
5284}
5285
5286sub git_search_help {
5287        git_header_html();
5288        git_print_page_nav('','', $hash,$hash,$hash);
5289        print <<EOT;
5290<dl>
5291<dt><b>commit</b></dt>
5292<dd>The commit messages and authorship information will be scanned for the given string.</dd>
5293EOT
5294        my ($have_grep) = gitweb_check_feature('grep');
5295        if ($have_grep) {
5296                print <<EOT;
5297<dt><b>grep</b></dt>
5298<dd>All files in the currently selected tree (HEAD unless you are explicitly browsing
5299    a different one) are searched for the given
5300<a href="http://en.wikipedia.org/wiki/Regular_expression">regular expression</a>
5301(POSIX extended) and the matches are listed. On large
5302trees, this search can take a while and put some strain on the server, so please use it with
5303some consideration.</dd>
5304EOT
5305        }
5306        print <<EOT;
5307<dt><b>author</b></dt>
5308<dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
5309<dt><b>committer</b></dt>
5310<dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
5311EOT
5312        my ($have_pickaxe) = gitweb_check_feature('pickaxe');
5313        if ($have_pickaxe) {
5314                print <<EOT;
5315<dt><b>pickaxe</b></dt>
5316<dd>All commits that caused the string to appear or disappear from any file (changes that
5317added, removed or "modified" the string) will be listed. This search can take a while and
5318takes a lot of strain on the server, so please use it wisely.</dd>
5319EOT
5320        }
5321        print "</dl>\n";
5322        git_footer_html();
5323}
5324
5325sub git_shortlog {
5326        my $head = git_get_head_hash($project);
5327        if (!defined $hash) {
5328                $hash = $head;
5329        }
5330        if (!defined $page) {
5331                $page = 0;
5332        }
5333        my $refs = git_get_references();
5334
5335        my @commitlist = parse_commits($hash, 101, (100 * $page));
5336
5337        my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, (100 * ($page+1)));
5338        my $next_link = '';
5339        if ($#commitlist >= 100) {
5340                $next_link =
5341                        $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
5342                                 -accesskey => "n", -title => "Alt-n"}, "next");
5343        }
5344
5345        git_header_html();
5346        git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
5347        git_print_header_div('summary', $project);
5348
5349        git_shortlog_body(\@commitlist, 0, 99, $refs, $next_link);
5350
5351        git_footer_html();
5352}
5353
5354## ......................................................................
5355## feeds (RSS, Atom; OPML)
5356
5357sub git_feed {
5358        my $format = shift || 'atom';
5359        my ($have_blame) = gitweb_check_feature('blame');
5360
5361        # Atom: http://www.atomenabled.org/developers/syndication/
5362        # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
5363        if ($format ne 'rss' && $format ne 'atom') {
5364                die_error(undef, "Unknown web feed format");
5365        }
5366
5367        # log/feed of current (HEAD) branch, log of given branch, history of file/directory
5368        my $head = $hash || 'HEAD';
5369        my @commitlist = parse_commits($head, 150, 0, undef, $file_name);
5370
5371        my %latest_commit;
5372        my %latest_date;
5373        my $content_type = "application/$format+xml";
5374        if (defined $cgi->http('HTTP_ACCEPT') &&
5375                 $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
5376                # browser (feed reader) prefers text/xml
5377                $content_type = 'text/xml';
5378        }
5379        if (defined($commitlist[0])) {
5380                %latest_commit = %{$commitlist[0]};
5381                %latest_date   = parse_date($latest_commit{'author_epoch'});
5382                print $cgi->header(
5383                        -type => $content_type,
5384                        -charset => 'utf-8',
5385                        -last_modified => $latest_date{'rfc2822'});
5386        } else {
5387                print $cgi->header(
5388                        -type => $content_type,
5389                        -charset => 'utf-8');
5390        }
5391
5392        # Optimization: skip generating the body if client asks only
5393        # for Last-Modified date.
5394        return if ($cgi->request_method() eq 'HEAD');
5395
5396        # header variables
5397        my $title = "$site_name - $project/$action";
5398        my $feed_type = 'log';
5399        if (defined $hash) {
5400                $title .= " - '$hash'";
5401                $feed_type = 'branch log';
5402                if (defined $file_name) {
5403                        $title .= " :: $file_name";
5404                        $feed_type = 'history';
5405                }
5406        } elsif (defined $file_name) {
5407                $title .= " - $file_name";
5408                $feed_type = 'history';
5409        }
5410        $title .= " $feed_type";
5411        my $descr = git_get_project_description($project);
5412        if (defined $descr) {
5413                $descr = esc_html($descr);
5414        } else {
5415                $descr = "$project " .
5416                         ($format eq 'rss' ? 'RSS' : 'Atom') .
5417                         " feed";
5418        }
5419        my $owner = git_get_project_owner($project);
5420        $owner = esc_html($owner);
5421
5422        #header
5423        my $alt_url;
5424        if (defined $file_name) {
5425                $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
5426        } elsif (defined $hash) {
5427                $alt_url = href(-full=>1, action=>"log", hash=>$hash);
5428        } else {
5429                $alt_url = href(-full=>1, action=>"summary");
5430        }
5431        print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
5432        if ($format eq 'rss') {
5433                print <<XML;
5434<rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
5435<channel>
5436XML
5437                print "<title>$title</title>\n" .
5438                      "<link>$alt_url</link>\n" .
5439                      "<description>$descr</description>\n" .
5440                      "<language>en</language>\n";
5441        } elsif ($format eq 'atom') {
5442                print <<XML;
5443<feed xmlns="http://www.w3.org/2005/Atom">
5444XML
5445                print "<title>$title</title>\n" .
5446                      "<subtitle>$descr</subtitle>\n" .
5447                      '<link rel="alternate" type="text/html" href="' .
5448                      $alt_url . '" />' . "\n" .
5449                      '<link rel="self" type="' . $content_type . '" href="' .
5450                      $cgi->self_url() . '" />' . "\n" .
5451                      "<id>" . href(-full=>1) . "</id>\n" .
5452                      # use project owner for feed author
5453                      "<author><name>$owner</name></author>\n";
5454                if (defined $favicon) {
5455                        print "<icon>" . esc_url($favicon) . "</icon>\n";
5456                }
5457                if (defined $logo_url) {
5458                        # not twice as wide as tall: 72 x 27 pixels
5459                        print "<logo>" . esc_url($logo) . "</logo>\n";
5460                }
5461                if (! %latest_date) {
5462                        # dummy date to keep the feed valid until commits trickle in:
5463                        print "<updated>1970-01-01T00:00:00Z</updated>\n";
5464                } else {
5465                        print "<updated>$latest_date{'iso-8601'}</updated>\n";
5466                }
5467        }
5468
5469        # contents
5470        for (my $i = 0; $i <= $#commitlist; $i++) {
5471                my %co = %{$commitlist[$i]};
5472                my $commit = $co{'id'};
5473                # we read 150, we always show 30 and the ones more recent than 48 hours
5474                if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
5475                        last;
5476                }
5477                my %cd = parse_date($co{'author_epoch'});
5478
5479                # get list of changed files
5480                open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
5481                        $co{'parent'} || "--root",
5482                        $co{'id'}, "--", (defined $file_name ? $file_name : ())
5483                        or next;
5484                my @difftree = map { chomp; $_ } <$fd>;
5485                close $fd
5486                        or next;
5487
5488                # print element (entry, item)
5489                my $co_url = href(-full=>1, action=>"commit", hash=>$commit);
5490                if ($format eq 'rss') {
5491                        print "<item>\n" .
5492                              "<title>" . esc_html($co{'title'}) . "</title>\n" .
5493                              "<author>" . esc_html($co{'author'}) . "</author>\n" .
5494                              "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
5495                              "<guid isPermaLink=\"true\">$co_url</guid>\n" .
5496                              "<link>$co_url</link>\n" .
5497                              "<description>" . esc_html($co{'title'}) . "</description>\n" .
5498                              "<content:encoded>" .
5499                              "<![CDATA[\n";
5500                } elsif ($format eq 'atom') {
5501                        print "<entry>\n" .
5502                              "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
5503                              "<updated>$cd{'iso-8601'}</updated>\n" .
5504                              "<author>\n" .
5505                              "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
5506                        if ($co{'author_email'}) {
5507                                print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
5508                        }
5509                        print "</author>\n" .
5510                              # use committer for contributor
5511                              "<contributor>\n" .
5512                              "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
5513                        if ($co{'committer_email'}) {
5514                                print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
5515                        }
5516                        print "</contributor>\n" .
5517                              "<published>$cd{'iso-8601'}</published>\n" .
5518                              "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
5519                              "<id>$co_url</id>\n" .
5520                              "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
5521                              "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
5522                }
5523                my $comment = $co{'comment'};
5524                print "<pre>\n";
5525                foreach my $line (@$comment) {
5526                        $line = esc_html($line);
5527                        print "$line\n";
5528                }
5529                print "</pre><ul>\n";
5530                foreach my $difftree_line (@difftree) {
5531                        my %difftree = parse_difftree_raw_line($difftree_line);
5532                        next if !$difftree{'from_id'};
5533
5534                        my $file = $difftree{'file'} || $difftree{'to_file'};
5535
5536                        print "<li>" .
5537                              "[" .
5538                              $cgi->a({-href => href(-full=>1, action=>"blobdiff",
5539                                                     hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
5540                                                     hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
5541                                                     file_name=>$file, file_parent=>$difftree{'from_file'}),
5542                                      -title => "diff"}, 'D');
5543                        if ($have_blame) {
5544                                print $cgi->a({-href => href(-full=>1, action=>"blame",
5545                                                             file_name=>$file, hash_base=>$commit),
5546                                              -title => "blame"}, 'B');
5547                        }
5548                        # if this is not a feed of a file history
5549                        if (!defined $file_name || $file_name ne $file) {
5550                                print $cgi->a({-href => href(-full=>1, action=>"history",
5551                                                             file_name=>$file, hash=>$commit),
5552                                              -title => "history"}, 'H');
5553                        }
5554                        $file = esc_path($file);
5555                        print "] ".
5556                              "$file</li>\n";
5557                }
5558                if ($format eq 'rss') {
5559                        print "</ul>]]>\n" .
5560                              "</content:encoded>\n" .
5561                              "</item>\n";
5562                } elsif ($format eq 'atom') {
5563                        print "</ul>\n</div>\n" .
5564                              "</content>\n" .
5565                              "</entry>\n";
5566                }
5567        }
5568
5569        # end of feed
5570        if ($format eq 'rss') {
5571                print "</channel>\n</rss>\n";
5572        }       elsif ($format eq 'atom') {
5573                print "</feed>\n";
5574        }
5575}
5576
5577sub git_rss {
5578        git_feed('rss');
5579}
5580
5581sub git_atom {
5582        git_feed('atom');
5583}
5584
5585sub git_opml {
5586        my @list = git_get_projects_list();
5587
5588        print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
5589        print <<XML;
5590<?xml version="1.0" encoding="utf-8"?>
5591<opml version="1.0">
5592<head>
5593  <title>$site_name OPML Export</title>
5594</head>
5595<body>
5596<outline text="git RSS feeds">
5597XML
5598
5599        foreach my $pr (@list) {
5600                my %proj = %$pr;
5601                my $head = git_get_head_hash($proj{'path'});
5602                if (!defined $head) {
5603                        next;
5604                }
5605                $git_dir = "$projectroot/$proj{'path'}";
5606                my %co = parse_commit($head);
5607                if (!%co) {
5608                        next;
5609                }
5610
5611                my $path = esc_html(chop_str($proj{'path'}, 25, 5));
5612                my $rss  = "$my_url?p=$proj{'path'};a=rss";
5613                my $html = "$my_url?p=$proj{'path'};a=summary";
5614                print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
5615        }
5616        print <<XML;
5617</outline>
5618</body>
5619</opml>
5620XML
5621}