6256641ace0cb2a3b362503437f6126487096fc5
   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# fs traversing limit for getting project list
  39# the number is relative to the projectroot
  40our $project_maxdepth = "++GITWEB_PROJECT_MAXDEPTH++";
  41
  42# target of the home link on top of all pages
  43our $home_link = $my_uri || "/";
  44
  45# string of the home link on top of all pages
  46our $home_link_str = "++GITWEB_HOME_LINK_STR++";
  47
  48# name of your site or organization to appear in page titles
  49# replace this with something more descriptive for clearer bookmarks
  50our $site_name = "++GITWEB_SITENAME++"
  51                 || ($ENV{'SERVER_NAME'} || "Untitled") . " Git";
  52
  53# filename of html text to include at top of each page
  54our $site_header = "++GITWEB_SITE_HEADER++";
  55# html text to include at home page
  56our $home_text = "++GITWEB_HOMETEXT++";
  57# filename of html text to include at bottom of each page
  58our $site_footer = "++GITWEB_SITE_FOOTER++";
  59
  60# URI of stylesheets
  61our @stylesheets = ("++GITWEB_CSS++");
  62# URI of a single stylesheet, which can be overridden in GITWEB_CONFIG.
  63our $stylesheet = undef;
  64# URI of GIT logo (72x27 size)
  65our $logo = "++GITWEB_LOGO++";
  66# URI of GIT favicon, assumed to be image/png type
  67our $favicon = "++GITWEB_FAVICON++";
  68
  69# URI and label (title) of GIT logo link
  70#our $logo_url = "http://www.kernel.org/pub/software/scm/git/docs/";
  71#our $logo_label = "git documentation";
  72our $logo_url = "http://git.or.cz/";
  73our $logo_label = "git homepage";
  74
  75# source of projects list
  76our $projects_list = "++GITWEB_LIST++";
  77
  78# the width (in characters) of the projects list "Description" column
  79our $projects_list_description_width = 25;
  80
  81# default order of projects list
  82# valid values are none, project, descr, owner, and age
  83our $default_projects_order = "project";
  84
  85# show repository only if this file exists
  86# (only effective if this variable evaluates to true)
  87our $export_ok = "++GITWEB_EXPORT_OK++";
  88
  89# only allow viewing of repositories also shown on the overview page
  90our $strict_export = "++GITWEB_STRICT_EXPORT++";
  91
  92# list of git base URLs used for URL to where fetch project from,
  93# i.e. full URL is "$git_base_url/$project"
  94our @git_base_url_list = grep { $_ ne '' } ("++GITWEB_BASE_URL++");
  95
  96# default blob_plain mimetype and default charset for text/plain blob
  97our $default_blob_plain_mimetype = 'text/plain';
  98our $default_text_plain_charset  = undef;
  99
 100# file to use for guessing MIME types before trying /etc/mime.types
 101# (relative to the current git repository)
 102our $mimetypes_file = undef;
 103
 104# assume this charset if line contains non-UTF-8 characters;
 105# it should be valid encoding (see Encoding::Supported(3pm) for list),
 106# for which encoding all byte sequences are valid, for example
 107# 'iso-8859-1' aka 'latin1' (it is decoded without checking, so it
 108# could be even 'utf-8' for the old behavior)
 109our $fallback_encoding = 'latin1';
 110
 111# rename detection options for git-diff and git-diff-tree
 112# - default is '-M', with the cost proportional to
 113#   (number of removed files) * (number of new files).
 114# - more costly is '-C' (which implies '-M'), with the cost proportional to
 115#   (number of changed files + number of removed files) * (number of new files)
 116# - even more costly is '-C', '--find-copies-harder' with cost
 117#   (number of files in the original tree) * (number of new files)
 118# - one might want to include '-B' option, e.g. '-B', '-M'
 119our @diff_opts = ('-M'); # taken from git_commit
 120
 121# information about snapshot formats that gitweb is capable of serving
 122our %known_snapshot_formats = (
 123        # name => {
 124        #       'display' => display name,
 125        #       'type' => mime type,
 126        #       'suffix' => filename suffix,
 127        #       'format' => --format for git-archive,
 128        #       'compressor' => [compressor command and arguments]
 129        #                       (array reference, optional)}
 130        #
 131        'tgz' => {
 132                'display' => 'tar.gz',
 133                'type' => 'application/x-gzip',
 134                'suffix' => '.tar.gz',
 135                'format' => 'tar',
 136                'compressor' => ['gzip']},
 137
 138        'tbz2' => {
 139                'display' => 'tar.bz2',
 140                'type' => 'application/x-bzip2',
 141                'suffix' => '.tar.bz2',
 142                'format' => 'tar',
 143                'compressor' => ['bzip2']},
 144
 145        'zip' => {
 146                'display' => 'zip',
 147                'type' => 'application/x-zip',
 148                'suffix' => '.zip',
 149                'format' => 'zip'},
 150);
 151
 152# Aliases so we understand old gitweb.snapshot values in repository
 153# configuration.
 154our %known_snapshot_format_aliases = (
 155        'gzip'  => 'tgz',
 156        'bzip2' => 'tbz2',
 157
 158        # backward compatibility: legacy gitweb config support
 159        'x-gzip' => undef, 'gz' => undef,
 160        'x-bzip2' => undef, 'bz2' => undef,
 161        'x-zip' => undef, '' => undef,
 162);
 163
 164# You define site-wide feature defaults here; override them with
 165# $GITWEB_CONFIG as necessary.
 166our %feature = (
 167        # feature => {
 168        #       'sub' => feature-sub (subroutine),
 169        #       'override' => allow-override (boolean),
 170        #       'default' => [ default options...] (array reference)}
 171        #
 172        # if feature is overridable (it means that allow-override has true value),
 173        # then feature-sub will be called with default options as parameters;
 174        # return value of feature-sub indicates if to enable specified feature
 175        #
 176        # if there is no 'sub' key (no feature-sub), then feature cannot be
 177        # overriden
 178        #
 179        # use gitweb_check_feature(<feature>) to check if <feature> is enabled
 180
 181        # Enable the 'blame' blob view, showing the last commit that modified
 182        # each line in the file. This can be very CPU-intensive.
 183
 184        # To enable system wide have in $GITWEB_CONFIG
 185        # $feature{'blame'}{'default'} = [1];
 186        # To have project specific config enable override in $GITWEB_CONFIG
 187        # $feature{'blame'}{'override'} = 1;
 188        # and in project config gitweb.blame = 0|1;
 189        'blame' => {
 190                'sub' => \&feature_blame,
 191                'override' => 0,
 192                'default' => [0]},
 193
 194        # Enable the 'snapshot' link, providing a compressed archive of any
 195        # tree. This can potentially generate high traffic if you have large
 196        # project.
 197
 198        # Value is a list of formats defined in %known_snapshot_formats that
 199        # you wish to offer.
 200        # To disable system wide have in $GITWEB_CONFIG
 201        # $feature{'snapshot'}{'default'} = [];
 202        # To have project specific config enable override in $GITWEB_CONFIG
 203        # $feature{'snapshot'}{'override'} = 1;
 204        # and in project config, a comma-separated list of formats or "none"
 205        # to disable.  Example: gitweb.snapshot = tbz2,zip;
 206        'snapshot' => {
 207                'sub' => \&feature_snapshot,
 208                'override' => 0,
 209                'default' => ['tgz']},
 210
 211        # Enable text search, which will list the commits which match author,
 212        # committer or commit text to a given string.  Enabled by default.
 213        # Project specific override is not supported.
 214        'search' => {
 215                'override' => 0,
 216                'default' => [1]},
 217
 218        # Enable grep search, which will list the files in currently selected
 219        # tree containing the given string. Enabled by default. This can be
 220        # potentially CPU-intensive, of course.
 221
 222        # To enable system wide have in $GITWEB_CONFIG
 223        # $feature{'grep'}{'default'} = [1];
 224        # To have project specific config enable override in $GITWEB_CONFIG
 225        # $feature{'grep'}{'override'} = 1;
 226        # and in project config gitweb.grep = 0|1;
 227        'grep' => {
 228                'override' => 0,
 229                'default' => [1]},
 230
 231        # Enable the pickaxe search, which will list the commits that modified
 232        # a given string in a file. This can be practical and quite faster
 233        # alternative to 'blame', but still potentially CPU-intensive.
 234
 235        # To enable system wide have in $GITWEB_CONFIG
 236        # $feature{'pickaxe'}{'default'} = [1];
 237        # To have project specific config enable override in $GITWEB_CONFIG
 238        # $feature{'pickaxe'}{'override'} = 1;
 239        # and in project config gitweb.pickaxe = 0|1;
 240        'pickaxe' => {
 241                'sub' => \&feature_pickaxe,
 242                'override' => 0,
 243                'default' => [1]},
 244
 245        # Make gitweb use an alternative format of the URLs which can be
 246        # more readable and natural-looking: project name is embedded
 247        # directly in the path and the query string contains other
 248        # auxiliary information. All gitweb installations recognize
 249        # URL in either format; this configures in which formats gitweb
 250        # generates links.
 251
 252        # To enable system wide have in $GITWEB_CONFIG
 253        # $feature{'pathinfo'}{'default'} = [1];
 254        # Project specific override is not supported.
 255
 256        # Note that you will need to change the default location of CSS,
 257        # favicon, logo and possibly other files to an absolute URL. Also,
 258        # if gitweb.cgi serves as your indexfile, you will need to force
 259        # $my_uri to contain the script name in your $GITWEB_CONFIG.
 260        'pathinfo' => {
 261                'override' => 0,
 262                'default' => [0]},
 263
 264        # Make gitweb consider projects in project root subdirectories
 265        # to be forks of existing projects. Given project $projname.git,
 266        # projects matching $projname/*.git will not be shown in the main
 267        # projects list, instead a '+' mark will be added to $projname
 268        # there and a 'forks' view will be enabled for the project, listing
 269        # all the forks. If project list is taken from a file, forks have
 270        # to be listed after the main project.
 271
 272        # To enable system wide have in $GITWEB_CONFIG
 273        # $feature{'forks'}{'default'} = [1];
 274        # Project specific override is not supported.
 275        'forks' => {
 276                'override' => 0,
 277                'default' => [0]},
 278);
 279
 280sub gitweb_check_feature {
 281        my ($name) = @_;
 282        return unless exists $feature{$name};
 283        my ($sub, $override, @defaults) = (
 284                $feature{$name}{'sub'},
 285                $feature{$name}{'override'},
 286                @{$feature{$name}{'default'}});
 287        if (!$override) { return @defaults; }
 288        if (!defined $sub) {
 289                warn "feature $name is not overrideable";
 290                return @defaults;
 291        }
 292        return $sub->(@defaults);
 293}
 294
 295sub feature_blame {
 296        my ($val) = git_get_project_config('blame', '--bool');
 297
 298        if ($val eq 'true') {
 299                return 1;
 300        } elsif ($val eq 'false') {
 301                return 0;
 302        }
 303
 304        return $_[0];
 305}
 306
 307sub feature_snapshot {
 308        my (@fmts) = @_;
 309
 310        my ($val) = git_get_project_config('snapshot');
 311
 312        if ($val) {
 313                @fmts = ($val eq 'none' ? () : split /\s*[,\s]\s*/, $val);
 314        }
 315
 316        return @fmts;
 317}
 318
 319sub feature_grep {
 320        my ($val) = git_get_project_config('grep', '--bool');
 321
 322        if ($val eq 'true') {
 323                return (1);
 324        } elsif ($val eq 'false') {
 325                return (0);
 326        }
 327
 328        return ($_[0]);
 329}
 330
 331sub feature_pickaxe {
 332        my ($val) = git_get_project_config('pickaxe', '--bool');
 333
 334        if ($val eq 'true') {
 335                return (1);
 336        } elsif ($val eq 'false') {
 337                return (0);
 338        }
 339
 340        return ($_[0]);
 341}
 342
 343# checking HEAD file with -e is fragile if the repository was
 344# initialized long time ago (i.e. symlink HEAD) and was pack-ref'ed
 345# and then pruned.
 346sub check_head_link {
 347        my ($dir) = @_;
 348        my $headfile = "$dir/HEAD";
 349        return ((-e $headfile) ||
 350                (-l $headfile && readlink($headfile) =~ /^refs\/heads\//));
 351}
 352
 353sub check_export_ok {
 354        my ($dir) = @_;
 355        return (check_head_link($dir) &&
 356                (!$export_ok || -e "$dir/$export_ok"));
 357}
 358
 359# process alternate names for backward compatibility
 360# filter out unsupported (unknown) snapshot formats
 361sub filter_snapshot_fmts {
 362        my @fmts = @_;
 363
 364        @fmts = map {
 365                exists $known_snapshot_format_aliases{$_} ?
 366                       $known_snapshot_format_aliases{$_} : $_} @fmts;
 367        @fmts = grep(exists $known_snapshot_formats{$_}, @fmts);
 368
 369}
 370
 371our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 372do $GITWEB_CONFIG if -e $GITWEB_CONFIG;
 373
 374# version of the core git binary
 375our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 376
 377$projects_list ||= $projectroot;
 378
 379# ======================================================================
 380# input validation and dispatch
 381our $action = $cgi->param('a');
 382if (defined $action) {
 383        if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 384                die_error(undef, "Invalid action parameter");
 385        }
 386}
 387
 388# parameters which are pathnames
 389our $project = $cgi->param('p');
 390if (defined $project) {
 391        if (!validate_pathname($project) ||
 392            !(-d "$projectroot/$project") ||
 393            !check_head_link("$projectroot/$project") ||
 394            ($export_ok && !(-e "$projectroot/$project/$export_ok")) ||
 395            ($strict_export && !project_in_list($project))) {
 396                undef $project;
 397                die_error(undef, "No such project");
 398        }
 399}
 400
 401our $file_name = $cgi->param('f');
 402if (defined $file_name) {
 403        if (!validate_pathname($file_name)) {
 404                die_error(undef, "Invalid file parameter");
 405        }
 406}
 407
 408our $file_parent = $cgi->param('fp');
 409if (defined $file_parent) {
 410        if (!validate_pathname($file_parent)) {
 411                die_error(undef, "Invalid file parent parameter");
 412        }
 413}
 414
 415# parameters which are refnames
 416our $hash = $cgi->param('h');
 417if (defined $hash) {
 418        if (!validate_refname($hash)) {
 419                die_error(undef, "Invalid hash parameter");
 420        }
 421}
 422
 423our $hash_parent = $cgi->param('hp');
 424if (defined $hash_parent) {
 425        if (!validate_refname($hash_parent)) {
 426                die_error(undef, "Invalid hash parent parameter");
 427        }
 428}
 429
 430our $hash_base = $cgi->param('hb');
 431if (defined $hash_base) {
 432        if (!validate_refname($hash_base)) {
 433                die_error(undef, "Invalid hash base parameter");
 434        }
 435}
 436
 437my %allowed_options = (
 438        "--no-merges" => [ qw(rss atom log shortlog history) ],
 439);
 440
 441our @extra_options = $cgi->param('opt');
 442if (defined @extra_options) {
 443        foreach my $opt (@extra_options) {
 444                if (not exists $allowed_options{$opt}) {
 445                        die_error(undef, "Invalid option parameter");
 446                }
 447                if (not grep(/^$action$/, @{$allowed_options{$opt}})) {
 448                        die_error(undef, "Invalid option parameter for this action");
 449                }
 450        }
 451}
 452
 453our $hash_parent_base = $cgi->param('hpb');
 454if (defined $hash_parent_base) {
 455        if (!validate_refname($hash_parent_base)) {
 456                die_error(undef, "Invalid hash parent base parameter");
 457        }
 458}
 459
 460# other parameters
 461our $page = $cgi->param('pg');
 462if (defined $page) {
 463        if ($page =~ m/[^0-9]/) {
 464                die_error(undef, "Invalid page parameter");
 465        }
 466}
 467
 468our $searchtype = $cgi->param('st');
 469if (defined $searchtype) {
 470        if ($searchtype =~ m/[^a-z]/) {
 471                die_error(undef, "Invalid searchtype parameter");
 472        }
 473}
 474
 475our $searchtext = $cgi->param('s');
 476our $search_regexp;
 477if (defined $searchtext) {
 478        if (length($searchtext) < 2) {
 479                die_error(undef, "At least two characters are required for search parameter");
 480        }
 481        $search_regexp = quotemeta $searchtext;
 482}
 483
 484# now read PATH_INFO and use it as alternative to parameters
 485sub evaluate_path_info {
 486        return if defined $project;
 487        my $path_info = $ENV{"PATH_INFO"};
 488        return if !$path_info;
 489        $path_info =~ s,^/+,,;
 490        return if !$path_info;
 491        # find which part of PATH_INFO is project
 492        $project = $path_info;
 493        $project =~ s,/+$,,;
 494        while ($project && !check_head_link("$projectroot/$project")) {
 495                $project =~ s,/*[^/]*$,,;
 496        }
 497        # validate project
 498        $project = validate_pathname($project);
 499        if (!$project ||
 500            ($export_ok && !-e "$projectroot/$project/$export_ok") ||
 501            ($strict_export && !project_in_list($project))) {
 502                undef $project;
 503                return;
 504        }
 505        # do not change any parameters if an action is given using the query string
 506        return if $action;
 507        $path_info =~ s,^$project/*,,;
 508        my ($refname, $pathname) = split(/:/, $path_info, 2);
 509        if (defined $pathname) {
 510                # we got "project.git/branch:filename" or "project.git/branch:dir/"
 511                # we could use git_get_type(branch:pathname), but it needs $git_dir
 512                $pathname =~ s,^/+,,;
 513                if (!$pathname || substr($pathname, -1) eq "/") {
 514                        $action  ||= "tree";
 515                        $pathname =~ s,/$,,;
 516                } else {
 517                        $action  ||= "blob_plain";
 518                }
 519                $hash_base ||= validate_refname($refname);
 520                $file_name ||= validate_pathname($pathname);
 521        } elsif (defined $refname) {
 522                # we got "project.git/branch"
 523                $action ||= "shortlog";
 524                $hash   ||= validate_refname($refname);
 525        }
 526}
 527evaluate_path_info();
 528
 529# path to the current git repository
 530our $git_dir;
 531$git_dir = "$projectroot/$project" if $project;
 532
 533# dispatch
 534my %actions = (
 535        "blame" => \&git_blame2,
 536        "blobdiff" => \&git_blobdiff,
 537        "blobdiff_plain" => \&git_blobdiff_plain,
 538        "blob" => \&git_blob,
 539        "blob_plain" => \&git_blob_plain,
 540        "commitdiff" => \&git_commitdiff,
 541        "commitdiff_plain" => \&git_commitdiff_plain,
 542        "commit" => \&git_commit,
 543        "forks" => \&git_forks,
 544        "heads" => \&git_heads,
 545        "history" => \&git_history,
 546        "log" => \&git_log,
 547        "rss" => \&git_rss,
 548        "atom" => \&git_atom,
 549        "search" => \&git_search,
 550        "search_help" => \&git_search_help,
 551        "shortlog" => \&git_shortlog,
 552        "summary" => \&git_summary,
 553        "tag" => \&git_tag,
 554        "tags" => \&git_tags,
 555        "tree" => \&git_tree,
 556        "snapshot" => \&git_snapshot,
 557        "object" => \&git_object,
 558        # those below don't need $project
 559        "opml" => \&git_opml,
 560        "project_list" => \&git_project_list,
 561        "project_index" => \&git_project_index,
 562);
 563
 564if (!defined $action) {
 565        if (defined $hash) {
 566                $action = git_get_type($hash);
 567        } elsif (defined $hash_base && defined $file_name) {
 568                $action = git_get_type("$hash_base:$file_name");
 569        } elsif (defined $project) {
 570                $action = 'summary';
 571        } else {
 572                $action = 'project_list';
 573        }
 574}
 575if (!defined($actions{$action})) {
 576        die_error(undef, "Unknown action");
 577}
 578if ($action !~ m/^(opml|project_list|project_index)$/ &&
 579    !$project) {
 580        die_error(undef, "Project needed");
 581}
 582$actions{$action}->();
 583exit;
 584
 585## ======================================================================
 586## action links
 587
 588sub href(%) {
 589        my %params = @_;
 590        # default is to use -absolute url() i.e. $my_uri
 591        my $href = $params{-full} ? $my_url : $my_uri;
 592
 593        # XXX: Warning: If you touch this, check the search form for updating,
 594        # too.
 595
 596        my @mapping = (
 597                project => "p",
 598                action => "a",
 599                file_name => "f",
 600                file_parent => "fp",
 601                hash => "h",
 602                hash_parent => "hp",
 603                hash_base => "hb",
 604                hash_parent_base => "hpb",
 605                page => "pg",
 606                order => "o",
 607                searchtext => "s",
 608                searchtype => "st",
 609                snapshot_format => "sf",
 610                extra_options => "opt",
 611        );
 612        my %mapping = @mapping;
 613
 614        if ($params{-replay}) {
 615                while (my ($name, $symbol) = each %mapping) {
 616                        if (!exists $params{$name}) {
 617                                # to allow for multivalued params we use arrayref form
 618                                $params{$name} = [ $cgi->param($symbol) ];
 619                        }
 620                }
 621        }
 622
 623        $params{'project'} = $project unless exists $params{'project'};
 624
 625        my ($use_pathinfo) = gitweb_check_feature('pathinfo');
 626        if ($use_pathinfo) {
 627                # use PATH_INFO for project name
 628                $href .= "/$params{'project'}" if defined $params{'project'};
 629                delete $params{'project'};
 630
 631                # Summary just uses the project path URL
 632                if (defined $params{'action'} && $params{'action'} eq 'summary') {
 633                        delete $params{'action'};
 634                }
 635        }
 636
 637        # now encode the parameters explicitly
 638        my @result = ();
 639        for (my $i = 0; $i < @mapping; $i += 2) {
 640                my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 641                if (defined $params{$name}) {
 642                        if (ref($params{$name}) eq "ARRAY") {
 643                                foreach my $par (@{$params{$name}}) {
 644                                        push @result, $symbol . "=" . esc_param($par);
 645                                }
 646                        } else {
 647                                push @result, $symbol . "=" . esc_param($params{$name});
 648                        }
 649                }
 650        }
 651        $href .= "?" . join(';', @result) if scalar @result;
 652
 653        return $href;
 654}
 655
 656
 657## ======================================================================
 658## validation, quoting/unquoting and escaping
 659
 660sub validate_pathname {
 661        my $input = shift || return undef;
 662
 663        # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 664        # at the beginning, at the end, and between slashes.
 665        # also this catches doubled slashes
 666        if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 667                return undef;
 668        }
 669        # no null characters
 670        if ($input =~ m!\0!) {
 671                return undef;
 672        }
 673        return $input;
 674}
 675
 676sub validate_refname {
 677        my $input = shift || return undef;
 678
 679        # textual hashes are O.K.
 680        if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 681                return $input;
 682        }
 683        # it must be correct pathname
 684        $input = validate_pathname($input)
 685                or return undef;
 686        # restrictions on ref name according to git-check-ref-format
 687        if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 688                return undef;
 689        }
 690        return $input;
 691}
 692
 693# decode sequences of octets in utf8 into Perl's internal form,
 694# which is utf-8 with utf8 flag set if needed.  gitweb writes out
 695# in utf-8 thanks to "binmode STDOUT, ':utf8'" at beginning
 696sub to_utf8 {
 697        my $str = shift;
 698        if (utf8::valid($str)) {
 699                utf8::decode($str);
 700                return $str;
 701        } else {
 702                return decode($fallback_encoding, $str, Encode::FB_DEFAULT);
 703        }
 704}
 705
 706# quote unsafe chars, but keep the slash, even when it's not
 707# correct, but quoted slashes look too horrible in bookmarks
 708sub esc_param {
 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# quote unsafe chars in whole URL, so some charactrs cannot be quoted
 717sub esc_url {
 718        my $str = shift;
 719        $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 720        $str =~ s/\+/%2B/g;
 721        $str =~ s/ /\+/g;
 722        return $str;
 723}
 724
 725# replace invalid utf8 character with SUBSTITUTION sequence
 726sub esc_html ($;%) {
 727        my $str = shift;
 728        my %opts = @_;
 729
 730        $str = to_utf8($str);
 731        $str = $cgi->escapeHTML($str);
 732        if ($opts{'-nbsp'}) {
 733                $str =~ s/ /&nbsp;/g;
 734        }
 735        $str =~ s|([[:cntrl:]])|(($1 ne "\t") ? quot_cec($1) : $1)|eg;
 736        return $str;
 737}
 738
 739# quote control characters and escape filename to HTML
 740sub esc_path {
 741        my $str = shift;
 742        my %opts = @_;
 743
 744        $str = to_utf8($str);
 745        $str = $cgi->escapeHTML($str);
 746        if ($opts{'-nbsp'}) {
 747                $str =~ s/ /&nbsp;/g;
 748        }
 749        $str =~ s|([[:cntrl:]])|quot_cec($1)|eg;
 750        return $str;
 751}
 752
 753# Make control characters "printable", using character escape codes (CEC)
 754sub quot_cec {
 755        my $cntrl = shift;
 756        my %es = ( # character escape codes, aka escape sequences
 757                   "\t" => '\t',   # tab            (HT)
 758                   "\n" => '\n',   # line feed      (LF)
 759                   "\r" => '\r',   # carrige return (CR)
 760                   "\f" => '\f',   # form feed      (FF)
 761                   "\b" => '\b',   # backspace      (BS)
 762                   "\a" => '\a',   # alarm (bell)   (BEL)
 763                   "\e" => '\e',   # escape         (ESC)
 764                   "\013" => '\v', # vertical tab   (VT)
 765                   "\000" => '\0', # nul character  (NUL)
 766                   );
 767        my $chr = ( (exists $es{$cntrl})
 768                    ? $es{$cntrl}
 769                    : sprintf('\%03o', ord($cntrl)) );
 770        return "<span class=\"cntrl\">$chr</span>";
 771}
 772
 773# Alternatively use unicode control pictures codepoints,
 774# Unicode "printable representation" (PR)
 775sub quot_upr {
 776        my $cntrl = shift;
 777        my $chr = sprintf('&#%04d;', 0x2400+ord($cntrl));
 778        return "<span class=\"cntrl\">$chr</span>";
 779}
 780
 781# git may return quoted and escaped filenames
 782sub unquote {
 783        my $str = shift;
 784
 785        sub unq {
 786                my $seq = shift;
 787                my %es = ( # character escape codes, aka escape sequences
 788                        't' => "\t",   # tab            (HT, TAB)
 789                        'n' => "\n",   # newline        (NL)
 790                        'r' => "\r",   # return         (CR)
 791                        'f' => "\f",   # form feed      (FF)
 792                        'b' => "\b",   # backspace      (BS)
 793                        'a' => "\a",   # alarm (bell)   (BEL)
 794                        'e' => "\e",   # escape         (ESC)
 795                        'v' => "\013", # vertical tab   (VT)
 796                );
 797
 798                if ($seq =~ m/^[0-7]{1,3}$/) {
 799                        # octal char sequence
 800                        return chr(oct($seq));
 801                } elsif (exists $es{$seq}) {
 802                        # C escape sequence, aka character escape code
 803                        return $es{$seq}
 804                }
 805                # quoted ordinary character
 806                return $seq;
 807        }
 808
 809        if ($str =~ m/^"(.*)"$/) {
 810                # needs unquoting
 811                $str = $1;
 812                $str =~ s/\\([^0-7]|[0-7]{1,3})/unq($1)/eg;
 813        }
 814        return $str;
 815}
 816
 817# escape tabs (convert tabs to spaces)
 818sub untabify {
 819        my $line = shift;
 820
 821        while ((my $pos = index($line, "\t")) != -1) {
 822                if (my $count = (8 - ($pos % 8))) {
 823                        my $spaces = ' ' x $count;
 824                        $line =~ s/\t/$spaces/;
 825                }
 826        }
 827
 828        return $line;
 829}
 830
 831sub project_in_list {
 832        my $project = shift;
 833        my @list = git_get_projects_list();
 834        return @list && scalar(grep { $_->{'path'} eq $project } @list);
 835}
 836
 837## ----------------------------------------------------------------------
 838## HTML aware string manipulation
 839
 840sub chop_str {
 841        my $str = shift;
 842        my $len = shift;
 843        my $add_len = shift || 10;
 844
 845        # allow only $len chars, but don't cut a word if it would fit in $add_len
 846        # if it doesn't fit, cut it if it's still longer than the dots we would add
 847        $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 848        my $body = $1;
 849        my $tail = $2;
 850        if (length($tail) > 4) {
 851                $tail = " ...";
 852                $body =~ s/&[^;]*$//; # remove chopped character entities
 853        }
 854        return "$body$tail";
 855}
 856
 857# takes the same arguments as chop_str, but also wraps a <span> around the
 858# result with a title attribute if it does get chopped. Additionally, the
 859# string is HTML-escaped.
 860sub chop_and_escape_str {
 861        my $str = shift;
 862        my $len = shift;
 863        my $add_len = shift || 10;
 864
 865        my $chopped = chop_str($str, $len, $add_len);
 866        if ($chopped eq $str) {
 867                return esc_html($chopped);
 868        } else {
 869                return qq{<span title="} . esc_html($str) . qq{">} .
 870                        esc_html($chopped) . qq{</span>};
 871        }
 872}
 873
 874## ----------------------------------------------------------------------
 875## functions returning short strings
 876
 877# CSS class for given age value (in seconds)
 878sub age_class {
 879        my $age = shift;
 880
 881        if (!defined $age) {
 882                return "noage";
 883        } elsif ($age < 60*60*2) {
 884                return "age0";
 885        } elsif ($age < 60*60*24*2) {
 886                return "age1";
 887        } else {
 888                return "age2";
 889        }
 890}
 891
 892# convert age in seconds to "nn units ago" string
 893sub age_string {
 894        my $age = shift;
 895        my $age_str;
 896
 897        if ($age > 60*60*24*365*2) {
 898                $age_str = (int $age/60/60/24/365);
 899                $age_str .= " years ago";
 900        } elsif ($age > 60*60*24*(365/12)*2) {
 901                $age_str = int $age/60/60/24/(365/12);
 902                $age_str .= " months ago";
 903        } elsif ($age > 60*60*24*7*2) {
 904                $age_str = int $age/60/60/24/7;
 905                $age_str .= " weeks ago";
 906        } elsif ($age > 60*60*24*2) {
 907                $age_str = int $age/60/60/24;
 908                $age_str .= " days ago";
 909        } elsif ($age > 60*60*2) {
 910                $age_str = int $age/60/60;
 911                $age_str .= " hours ago";
 912        } elsif ($age > 60*2) {
 913                $age_str = int $age/60;
 914                $age_str .= " min ago";
 915        } elsif ($age > 2) {
 916                $age_str = int $age;
 917                $age_str .= " sec ago";
 918        } else {
 919                $age_str .= " right now";
 920        }
 921        return $age_str;
 922}
 923
 924use constant {
 925        S_IFINVALID => 0030000,
 926        S_IFGITLINK => 0160000,
 927};
 928
 929# submodule/subproject, a commit object reference
 930sub S_ISGITLINK($) {
 931        my $mode = shift;
 932
 933        return (($mode & S_IFMT) == S_IFGITLINK)
 934}
 935
 936# convert file mode in octal to symbolic file mode string
 937sub mode_str {
 938        my $mode = oct shift;
 939
 940        if (S_ISGITLINK($mode)) {
 941                return 'm---------';
 942        } elsif (S_ISDIR($mode & S_IFMT)) {
 943                return 'drwxr-xr-x';
 944        } elsif (S_ISLNK($mode)) {
 945                return 'lrwxrwxrwx';
 946        } elsif (S_ISREG($mode)) {
 947                # git cares only about the executable bit
 948                if ($mode & S_IXUSR) {
 949                        return '-rwxr-xr-x';
 950                } else {
 951                        return '-rw-r--r--';
 952                };
 953        } else {
 954                return '----------';
 955        }
 956}
 957
 958# convert file mode in octal to file type string
 959sub file_type {
 960        my $mode = shift;
 961
 962        if ($mode !~ m/^[0-7]+$/) {
 963                return $mode;
 964        } else {
 965                $mode = oct $mode;
 966        }
 967
 968        if (S_ISGITLINK($mode)) {
 969                return "submodule";
 970        } elsif (S_ISDIR($mode & S_IFMT)) {
 971                return "directory";
 972        } elsif (S_ISLNK($mode)) {
 973                return "symlink";
 974        } elsif (S_ISREG($mode)) {
 975                return "file";
 976        } else {
 977                return "unknown";
 978        }
 979}
 980
 981# convert file mode in octal to file type description string
 982sub file_type_long {
 983        my $mode = shift;
 984
 985        if ($mode !~ m/^[0-7]+$/) {
 986                return $mode;
 987        } else {
 988                $mode = oct $mode;
 989        }
 990
 991        if (S_ISGITLINK($mode)) {
 992                return "submodule";
 993        } elsif (S_ISDIR($mode & S_IFMT)) {
 994                return "directory";
 995        } elsif (S_ISLNK($mode)) {
 996                return "symlink";
 997        } elsif (S_ISREG($mode)) {
 998                if ($mode & S_IXUSR) {
 999                        return "executable";
1000                } else {
1001                        return "file";
1002                };
1003        } else {
1004                return "unknown";
1005        }
1006}
1007
1008
1009## ----------------------------------------------------------------------
1010## functions returning short HTML fragments, or transforming HTML fragments
1011## which don't belong to other sections
1012
1013# format line of commit message.
1014sub format_log_line_html {
1015        my $line = shift;
1016
1017        $line = esc_html($line, -nbsp=>1);
1018        if ($line =~ m/([0-9a-fA-F]{8,40})/) {
1019                my $hash_text = $1;
1020                my $link =
1021                        $cgi->a({-href => href(action=>"object", hash=>$hash_text),
1022                                -class => "text"}, $hash_text);
1023                $line =~ s/$hash_text/$link/;
1024        }
1025        return $line;
1026}
1027
1028# format marker of refs pointing to given object
1029sub format_ref_marker {
1030        my ($refs, $id) = @_;
1031        my $markers = '';
1032
1033        if (defined $refs->{$id}) {
1034                foreach my $ref (@{$refs->{$id}}) {
1035                        my ($type, $name) = qw();
1036                        # e.g. tags/v2.6.11 or heads/next
1037                        if ($ref =~ m!^(.*?)s?/(.*)$!) {
1038                                $type = $1;
1039                                $name = $2;
1040                        } else {
1041                                $type = "ref";
1042                                $name = $ref;
1043                        }
1044
1045                        $markers .= " <span class=\"$type\" title=\"$ref\">" .
1046                                    esc_html($name) . "</span>";
1047                }
1048        }
1049
1050        if ($markers) {
1051                return ' <span class="refs">'. $markers . '</span>';
1052        } else {
1053                return "";
1054        }
1055}
1056
1057# format, perhaps shortened and with markers, title line
1058sub format_subject_html {
1059        my ($long, $short, $href, $extra) = @_;
1060        $extra = '' unless defined($extra);
1061
1062        if (length($short) < length($long)) {
1063                return $cgi->a({-href => $href, -class => "list subject",
1064                                -title => to_utf8($long)},
1065                       esc_html($short) . $extra);
1066        } else {
1067                return $cgi->a({-href => $href, -class => "list subject"},
1068                       esc_html($long)  . $extra);
1069        }
1070}
1071
1072# format git diff header line, i.e. "diff --(git|combined|cc) ..."
1073sub format_git_diff_header_line {
1074        my $line = shift;
1075        my $diffinfo = shift;
1076        my ($from, $to) = @_;
1077
1078        if ($diffinfo->{'nparents'}) {
1079                # combined diff
1080                $line =~ s!^(diff (.*?) )"?.*$!$1!;
1081                if ($to->{'href'}) {
1082                        $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
1083                                         esc_path($to->{'file'}));
1084                } else { # file was deleted (no href)
1085                        $line .= esc_path($to->{'file'});
1086                }
1087        } else {
1088                # "ordinary" diff
1089                $line =~ s!^(diff (.*?) )"?a/.*$!$1!;
1090                if ($from->{'href'}) {
1091                        $line .= $cgi->a({-href => $from->{'href'}, -class => "path"},
1092                                         'a/' . esc_path($from->{'file'}));
1093                } else { # file was added (no href)
1094                        $line .= 'a/' . esc_path($from->{'file'});
1095                }
1096                $line .= ' ';
1097                if ($to->{'href'}) {
1098                        $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
1099                                         'b/' . esc_path($to->{'file'}));
1100                } else { # file was deleted
1101                        $line .= 'b/' . esc_path($to->{'file'});
1102                }
1103        }
1104
1105        return "<div class=\"diff header\">$line</div>\n";
1106}
1107
1108# format extended diff header line, before patch itself
1109sub format_extended_diff_header_line {
1110        my $line = shift;
1111        my $diffinfo = shift;
1112        my ($from, $to) = @_;
1113
1114        # match <path>
1115        if ($line =~ s!^((copy|rename) from ).*$!$1! && $from->{'href'}) {
1116                $line .= $cgi->a({-href=>$from->{'href'}, -class=>"path"},
1117                                       esc_path($from->{'file'}));
1118        }
1119        if ($line =~ s!^((copy|rename) to ).*$!$1! && $to->{'href'}) {
1120                $line .= $cgi->a({-href=>$to->{'href'}, -class=>"path"},
1121                                 esc_path($to->{'file'}));
1122        }
1123        # match single <mode>
1124        if ($line =~ m/\s(\d{6})$/) {
1125                $line .= '<span class="info"> (' .
1126                         file_type_long($1) .
1127                         ')</span>';
1128        }
1129        # match <hash>
1130        if ($line =~ m/^index [0-9a-fA-F]{40},[0-9a-fA-F]{40}/) {
1131                # can match only for combined diff
1132                $line = 'index ';
1133                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
1134                        if ($from->{'href'}[$i]) {
1135                                $line .= $cgi->a({-href=>$from->{'href'}[$i],
1136                                                  -class=>"hash"},
1137                                                 substr($diffinfo->{'from_id'}[$i],0,7));
1138                        } else {
1139                                $line .= '0' x 7;
1140                        }
1141                        # separator
1142                        $line .= ',' if ($i < $diffinfo->{'nparents'} - 1);
1143                }
1144                $line .= '..';
1145                if ($to->{'href'}) {
1146                        $line .= $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
1147                                         substr($diffinfo->{'to_id'},0,7));
1148                } else {
1149                        $line .= '0' x 7;
1150                }
1151
1152        } elsif ($line =~ m/^index [0-9a-fA-F]{40}..[0-9a-fA-F]{40}/) {
1153                # can match only for ordinary diff
1154                my ($from_link, $to_link);
1155                if ($from->{'href'}) {
1156                        $from_link = $cgi->a({-href=>$from->{'href'}, -class=>"hash"},
1157                                             substr($diffinfo->{'from_id'},0,7));
1158                } else {
1159                        $from_link = '0' x 7;
1160                }
1161                if ($to->{'href'}) {
1162                        $to_link = $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
1163                                           substr($diffinfo->{'to_id'},0,7));
1164                } else {
1165                        $to_link = '0' x 7;
1166                }
1167                my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
1168                $line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
1169        }
1170
1171        return $line . "<br/>\n";
1172}
1173
1174# format from-file/to-file diff header
1175sub format_diff_from_to_header {
1176        my ($from_line, $to_line, $diffinfo, $from, $to, @parents) = @_;
1177        my $line;
1178        my $result = '';
1179
1180        $line = $from_line;
1181        #assert($line =~ m/^---/) if DEBUG;
1182        # no extra formatting for "^--- /dev/null"
1183        if (! $diffinfo->{'nparents'}) {
1184                # ordinary (single parent) diff
1185                if ($line =~ m!^--- "?a/!) {
1186                        if ($from->{'href'}) {
1187                                $line = '--- a/' .
1188                                        $cgi->a({-href=>$from->{'href'}, -class=>"path"},
1189                                                esc_path($from->{'file'}));
1190                        } else {
1191                                $line = '--- a/' .
1192                                        esc_path($from->{'file'});
1193                        }
1194                }
1195                $result .= qq!<div class="diff from_file">$line</div>\n!;
1196
1197        } else {
1198                # combined diff (merge commit)
1199                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
1200                        if ($from->{'href'}[$i]) {
1201                                $line = '--- ' .
1202                                        $cgi->a({-href=>href(action=>"blobdiff",
1203                                                             hash_parent=>$diffinfo->{'from_id'}[$i],
1204                                                             hash_parent_base=>$parents[$i],
1205                                                             file_parent=>$from->{'file'}[$i],
1206                                                             hash=>$diffinfo->{'to_id'},
1207                                                             hash_base=>$hash,
1208                                                             file_name=>$to->{'file'}),
1209                                                 -class=>"path",
1210                                                 -title=>"diff" . ($i+1)},
1211                                                $i+1) .
1212                                        '/' .
1213                                        $cgi->a({-href=>$from->{'href'}[$i], -class=>"path"},
1214                                                esc_path($from->{'file'}[$i]));
1215                        } else {
1216                                $line = '--- /dev/null';
1217                        }
1218                        $result .= qq!<div class="diff from_file">$line</div>\n!;
1219                }
1220        }
1221
1222        $line = $to_line;
1223        #assert($line =~ m/^\+\+\+/) if DEBUG;
1224        # no extra formatting for "^+++ /dev/null"
1225        if ($line =~ m!^\+\+\+ "?b/!) {
1226                if ($to->{'href'}) {
1227                        $line = '+++ b/' .
1228                                $cgi->a({-href=>$to->{'href'}, -class=>"path"},
1229                                        esc_path($to->{'file'}));
1230                } else {
1231                        $line = '+++ b/' .
1232                                esc_path($to->{'file'});
1233                }
1234        }
1235        $result .= qq!<div class="diff to_file">$line</div>\n!;
1236
1237        return $result;
1238}
1239
1240# create note for patch simplified by combined diff
1241sub format_diff_cc_simplified {
1242        my ($diffinfo, @parents) = @_;
1243        my $result = '';
1244
1245        $result .= "<div class=\"diff header\">" .
1246                   "diff --cc ";
1247        if (!is_deleted($diffinfo)) {
1248                $result .= $cgi->a({-href => href(action=>"blob",
1249                                                  hash_base=>$hash,
1250                                                  hash=>$diffinfo->{'to_id'},
1251                                                  file_name=>$diffinfo->{'to_file'}),
1252                                    -class => "path"},
1253                                   esc_path($diffinfo->{'to_file'}));
1254        } else {
1255                $result .= esc_path($diffinfo->{'to_file'});
1256        }
1257        $result .= "</div>\n" . # class="diff header"
1258                   "<div class=\"diff nodifferences\">" .
1259                   "Simple merge" .
1260                   "</div>\n"; # class="diff nodifferences"
1261
1262        return $result;
1263}
1264
1265# format patch (diff) line (not to be used for diff headers)
1266sub format_diff_line {
1267        my $line = shift;
1268        my ($from, $to) = @_;
1269        my $diff_class = "";
1270
1271        chomp $line;
1272
1273        if ($from && $to && ref($from->{'href'}) eq "ARRAY") {
1274                # combined diff
1275                my $prefix = substr($line, 0, scalar @{$from->{'href'}});
1276                if ($line =~ m/^\@{3}/) {
1277                        $diff_class = " chunk_header";
1278                } elsif ($line =~ m/^\\/) {
1279                        $diff_class = " incomplete";
1280                } elsif ($prefix =~ tr/+/+/) {
1281                        $diff_class = " add";
1282                } elsif ($prefix =~ tr/-/-/) {
1283                        $diff_class = " rem";
1284                }
1285        } else {
1286                # assume ordinary diff
1287                my $char = substr($line, 0, 1);
1288                if ($char eq '+') {
1289                        $diff_class = " add";
1290                } elsif ($char eq '-') {
1291                        $diff_class = " rem";
1292                } elsif ($char eq '@') {
1293                        $diff_class = " chunk_header";
1294                } elsif ($char eq "\\") {
1295                        $diff_class = " incomplete";
1296                }
1297        }
1298        $line = untabify($line);
1299        if ($from && $to && $line =~ m/^\@{2} /) {
1300                my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
1301                        $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
1302
1303                $from_lines = 0 unless defined $from_lines;
1304                $to_lines   = 0 unless defined $to_lines;
1305
1306                if ($from->{'href'}) {
1307                        $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
1308                                             -class=>"list"}, $from_text);
1309                }
1310                if ($to->{'href'}) {
1311                        $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
1312                                             -class=>"list"}, $to_text);
1313                }
1314                $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
1315                        "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
1316                return "<div class=\"diff$diff_class\">$line</div>\n";
1317        } elsif ($from && $to && $line =~ m/^\@{3}/) {
1318                my ($prefix, $ranges, $section) = $line =~ m/^(\@+) (.*?) \@+(.*)$/;
1319                my (@from_text, @from_start, @from_nlines, $to_text, $to_start, $to_nlines);
1320
1321                @from_text = split(' ', $ranges);
1322                for (my $i = 0; $i < @from_text; ++$i) {
1323                        ($from_start[$i], $from_nlines[$i]) =
1324                                (split(',', substr($from_text[$i], 1)), 0);
1325                }
1326
1327                $to_text   = pop @from_text;
1328                $to_start  = pop @from_start;
1329                $to_nlines = pop @from_nlines;
1330
1331                $line = "<span class=\"chunk_info\">$prefix ";
1332                for (my $i = 0; $i < @from_text; ++$i) {
1333                        if ($from->{'href'}[$i]) {
1334                                $line .= $cgi->a({-href=>"$from->{'href'}[$i]#l$from_start[$i]",
1335                                                  -class=>"list"}, $from_text[$i]);
1336                        } else {
1337                                $line .= $from_text[$i];
1338                        }
1339                        $line .= " ";
1340                }
1341                if ($to->{'href'}) {
1342                        $line .= $cgi->a({-href=>"$to->{'href'}#l$to_start",
1343                                          -class=>"list"}, $to_text);
1344                } else {
1345                        $line .= $to_text;
1346                }
1347                $line .= " $prefix</span>" .
1348                         "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
1349                return "<div class=\"diff$diff_class\">$line</div>\n";
1350        }
1351        return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
1352}
1353
1354# Generates undef or something like "_snapshot_" or "snapshot (_tbz2_ _zip_)",
1355# linked.  Pass the hash of the tree/commit to snapshot.
1356sub format_snapshot_links {
1357        my ($hash) = @_;
1358        my @snapshot_fmts = gitweb_check_feature('snapshot');
1359        @snapshot_fmts = filter_snapshot_fmts(@snapshot_fmts);
1360        my $num_fmts = @snapshot_fmts;
1361        if ($num_fmts > 1) {
1362                # A parenthesized list of links bearing format names.
1363                # e.g. "snapshot (_tar.gz_ _zip_)"
1364                return "snapshot (" . join(' ', map
1365                        $cgi->a({
1366                                -href => href(
1367                                        action=>"snapshot",
1368                                        hash=>$hash,
1369                                        snapshot_format=>$_
1370                                )
1371                        }, $known_snapshot_formats{$_}{'display'})
1372                , @snapshot_fmts) . ")";
1373        } elsif ($num_fmts == 1) {
1374                # A single "snapshot" link whose tooltip bears the format name.
1375                # i.e. "_snapshot_"
1376                my ($fmt) = @snapshot_fmts;
1377                return
1378                        $cgi->a({
1379                                -href => href(
1380                                        action=>"snapshot",
1381                                        hash=>$hash,
1382                                        snapshot_format=>$fmt
1383                                ),
1384                                -title => "in format: $known_snapshot_formats{$fmt}{'display'}"
1385                        }, "snapshot");
1386        } else { # $num_fmts == 0
1387                return undef;
1388        }
1389}
1390
1391## ----------------------------------------------------------------------
1392## git utility subroutines, invoking git commands
1393
1394# returns path to the core git executable and the --git-dir parameter as list
1395sub git_cmd {
1396        return $GIT, '--git-dir='.$git_dir;
1397}
1398
1399# returns path to the core git executable and the --git-dir parameter as string
1400sub git_cmd_str {
1401        return join(' ', git_cmd());
1402}
1403
1404# get HEAD ref of given project as hash
1405sub git_get_head_hash {
1406        my $project = shift;
1407        my $o_git_dir = $git_dir;
1408        my $retval = undef;
1409        $git_dir = "$projectroot/$project";
1410        if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
1411                my $head = <$fd>;
1412                close $fd;
1413                if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
1414                        $retval = $1;
1415                }
1416        }
1417        if (defined $o_git_dir) {
1418                $git_dir = $o_git_dir;
1419        }
1420        return $retval;
1421}
1422
1423# get type of given object
1424sub git_get_type {
1425        my $hash = shift;
1426
1427        open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
1428        my $type = <$fd>;
1429        close $fd or return;
1430        chomp $type;
1431        return $type;
1432}
1433
1434# repository configuration
1435our $config_file = '';
1436our %config;
1437
1438# store multiple values for single key as anonymous array reference
1439# single values stored directly in the hash, not as [ <value> ]
1440sub hash_set_multi {
1441        my ($hash, $key, $value) = @_;
1442
1443        if (!exists $hash->{$key}) {
1444                $hash->{$key} = $value;
1445        } elsif (!ref $hash->{$key}) {
1446                $hash->{$key} = [ $hash->{$key}, $value ];
1447        } else {
1448                push @{$hash->{$key}}, $value;
1449        }
1450}
1451
1452# return hash of git project configuration
1453# optionally limited to some section, e.g. 'gitweb'
1454sub git_parse_project_config {
1455        my $section_regexp = shift;
1456        my %config;
1457
1458        local $/ = "\0";
1459
1460        open my $fh, "-|", git_cmd(), "config", '-z', '-l',
1461                or return;
1462
1463        while (my $keyval = <$fh>) {
1464                chomp $keyval;
1465                my ($key, $value) = split(/\n/, $keyval, 2);
1466
1467                hash_set_multi(\%config, $key, $value)
1468                        if (!defined $section_regexp || $key =~ /^(?:$section_regexp)\./o);
1469        }
1470        close $fh;
1471
1472        return %config;
1473}
1474
1475# convert config value to boolean, 'true' or 'false'
1476# no value, number > 0, 'true' and 'yes' values are true
1477# rest of values are treated as false (never as error)
1478sub config_to_bool {
1479        my $val = shift;
1480
1481        # strip leading and trailing whitespace
1482        $val =~ s/^\s+//;
1483        $val =~ s/\s+$//;
1484
1485        return (!defined $val ||               # section.key
1486                ($val =~ /^\d+$/ && $val) ||   # section.key = 1
1487                ($val =~ /^(?:true|yes)$/i));  # section.key = true
1488}
1489
1490# convert config value to simple decimal number
1491# an optional value suffix of 'k', 'm', or 'g' will cause the value
1492# to be multiplied by 1024, 1048576, or 1073741824
1493sub config_to_int {
1494        my $val = shift;
1495
1496        # strip leading and trailing whitespace
1497        $val =~ s/^\s+//;
1498        $val =~ s/\s+$//;
1499
1500        if (my ($num, $unit) = ($val =~ /^([0-9]*)([kmg])$/i)) {
1501                $unit = lc($unit);
1502                # unknown unit is treated as 1
1503                return $num * ($unit eq 'g' ? 1073741824 :
1504                               $unit eq 'm' ?    1048576 :
1505                               $unit eq 'k' ?       1024 : 1);
1506        }
1507        return $val;
1508}
1509
1510# convert config value to array reference, if needed
1511sub config_to_multi {
1512        my $val = shift;
1513
1514        return ref($val) ? $val : (defined($val) ? [ $val ] : []);
1515}
1516
1517sub git_get_project_config {
1518        my ($key, $type) = @_;
1519
1520        # key sanity check
1521        return unless ($key);
1522        $key =~ s/^gitweb\.//;
1523        return if ($key =~ m/\W/);
1524
1525        # type sanity check
1526        if (defined $type) {
1527                $type =~ s/^--//;
1528                $type = undef
1529                        unless ($type eq 'bool' || $type eq 'int');
1530        }
1531
1532        # get config
1533        if (!defined $config_file ||
1534            $config_file ne "$git_dir/config") {
1535                %config = git_parse_project_config('gitweb');
1536                $config_file = "$git_dir/config";
1537        }
1538
1539        # ensure given type
1540        if (!defined $type) {
1541                return $config{"gitweb.$key"};
1542        } elsif ($type eq 'bool') {
1543                # backward compatibility: 'git config --bool' returns true/false
1544                return config_to_bool($config{"gitweb.$key"}) ? 'true' : 'false';
1545        } elsif ($type eq 'int') {
1546                return config_to_int($config{"gitweb.$key"});
1547        }
1548        return $config{"gitweb.$key"};
1549}
1550
1551# get hash of given path at given ref
1552sub git_get_hash_by_path {
1553        my $base = shift;
1554        my $path = shift || return undef;
1555        my $type = shift;
1556
1557        $path =~ s,/+$,,;
1558
1559        open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
1560                or die_error(undef, "Open git-ls-tree failed");
1561        my $line = <$fd>;
1562        close $fd or return undef;
1563
1564        if (!defined $line) {
1565                # there is no tree or hash given by $path at $base
1566                return undef;
1567        }
1568
1569        #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1570        $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
1571        if (defined $type && $type ne $2) {
1572                # type doesn't match
1573                return undef;
1574        }
1575        return $3;
1576}
1577
1578# get path of entry with given hash at given tree-ish (ref)
1579# used to get 'from' filename for combined diff (merge commit) for renames
1580sub git_get_path_by_hash {
1581        my $base = shift || return;
1582        my $hash = shift || return;
1583
1584        local $/ = "\0";
1585
1586        open my $fd, "-|", git_cmd(), "ls-tree", '-r', '-t', '-z', $base
1587                or return undef;
1588        while (my $line = <$fd>) {
1589                chomp $line;
1590
1591                #'040000 tree 595596a6a9117ddba9fe379b6b012b558bac8423  gitweb'
1592                #'100644 blob e02e90f0429be0d2a69b76571101f20b8f75530f  gitweb/README'
1593                if ($line =~ m/(?:[0-9]+) (?:.+) $hash\t(.+)$/) {
1594                        close $fd;
1595                        return $1;
1596                }
1597        }
1598        close $fd;
1599        return undef;
1600}
1601
1602## ......................................................................
1603## git utility functions, directly accessing git repository
1604
1605sub git_get_project_description {
1606        my $path = shift;
1607
1608        $git_dir = "$projectroot/$path";
1609        open my $fd, "$projectroot/$path/description"
1610                or return git_get_project_config('description');
1611        my $descr = <$fd>;
1612        close $fd;
1613        if (defined $descr) {
1614                chomp $descr;
1615        }
1616        return $descr;
1617}
1618
1619sub git_get_project_url_list {
1620        my $path = shift;
1621
1622        $git_dir = "$projectroot/$path";
1623        open my $fd, "$projectroot/$path/cloneurl"
1624                or return wantarray ?
1625                @{ config_to_multi(git_get_project_config('url')) } :
1626                   config_to_multi(git_get_project_config('url'));
1627        my @git_project_url_list = map { chomp; $_ } <$fd>;
1628        close $fd;
1629
1630        return wantarray ? @git_project_url_list : \@git_project_url_list;
1631}
1632
1633sub git_get_projects_list {
1634        my ($filter) = @_;
1635        my @list;
1636
1637        $filter ||= '';
1638        $filter =~ s/\.git$//;
1639
1640        my ($check_forks) = gitweb_check_feature('forks');
1641
1642        if (-d $projects_list) {
1643                # search in directory
1644                my $dir = $projects_list . ($filter ? "/$filter" : '');
1645                # remove the trailing "/"
1646                $dir =~ s!/+$!!;
1647                my $pfxlen = length("$dir");
1648                my $pfxdepth = ($dir =~ tr!/!!);
1649
1650                File::Find::find({
1651                        follow_fast => 1, # follow symbolic links
1652                        follow_skip => 2, # ignore duplicates
1653                        dangling_symlinks => 0, # ignore dangling symlinks, silently
1654                        wanted => sub {
1655                                # skip project-list toplevel, if we get it.
1656                                return if (m!^[/.]$!);
1657                                # only directories can be git repositories
1658                                return unless (-d $_);
1659                                # don't traverse too deep (Find is super slow on os x)
1660                                if (($File::Find::name =~ tr!/!!) - $pfxdepth > $project_maxdepth) {
1661                                        $File::Find::prune = 1;
1662                                        return;
1663                                }
1664
1665                                my $subdir = substr($File::Find::name, $pfxlen + 1);
1666                                # we check related file in $projectroot
1667                                if ($check_forks and $subdir =~ m#/.#) {
1668                                        $File::Find::prune = 1;
1669                                } elsif (check_export_ok("$projectroot/$filter/$subdir")) {
1670                                        push @list, { path => ($filter ? "$filter/" : '') . $subdir };
1671                                        $File::Find::prune = 1;
1672                                }
1673                        },
1674                }, "$dir");
1675
1676        } elsif (-f $projects_list) {
1677                # read from file(url-encoded):
1678                # 'git%2Fgit.git Linus+Torvalds'
1679                # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1680                # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1681                my %paths;
1682                open my ($fd), $projects_list or return;
1683        PROJECT:
1684                while (my $line = <$fd>) {
1685                        chomp $line;
1686                        my ($path, $owner) = split ' ', $line;
1687                        $path = unescape($path);
1688                        $owner = unescape($owner);
1689                        if (!defined $path) {
1690                                next;
1691                        }
1692                        if ($filter ne '') {
1693                                # looking for forks;
1694                                my $pfx = substr($path, 0, length($filter));
1695                                if ($pfx ne $filter) {
1696                                        next PROJECT;
1697                                }
1698                                my $sfx = substr($path, length($filter));
1699                                if ($sfx !~ /^\/.*\.git$/) {
1700                                        next PROJECT;
1701                                }
1702                        } elsif ($check_forks) {
1703                        PATH:
1704                                foreach my $filter (keys %paths) {
1705                                        # looking for forks;
1706                                        my $pfx = substr($path, 0, length($filter));
1707                                        if ($pfx ne $filter) {
1708                                                next PATH;
1709                                        }
1710                                        my $sfx = substr($path, length($filter));
1711                                        if ($sfx !~ /^\/.*\.git$/) {
1712                                                next PATH;
1713                                        }
1714                                        # is a fork, don't include it in
1715                                        # the list
1716                                        next PROJECT;
1717                                }
1718                        }
1719                        if (check_export_ok("$projectroot/$path")) {
1720                                my $pr = {
1721                                        path => $path,
1722                                        owner => to_utf8($owner),
1723                                };
1724                                push @list, $pr;
1725                                (my $forks_path = $path) =~ s/\.git$//;
1726                                $paths{$forks_path}++;
1727                        }
1728                }
1729                close $fd;
1730        }
1731        return @list;
1732}
1733
1734our $gitweb_project_owner = undef;
1735sub git_get_project_list_from_file {
1736
1737        return if (defined $gitweb_project_owner);
1738
1739        $gitweb_project_owner = {};
1740        # read from file (url-encoded):
1741        # 'git%2Fgit.git Linus+Torvalds'
1742        # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1743        # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1744        if (-f $projects_list) {
1745                open (my $fd , $projects_list);
1746                while (my $line = <$fd>) {
1747                        chomp $line;
1748                        my ($pr, $ow) = split ' ', $line;
1749                        $pr = unescape($pr);
1750                        $ow = unescape($ow);
1751                        $gitweb_project_owner->{$pr} = to_utf8($ow);
1752                }
1753                close $fd;
1754        }
1755}
1756
1757sub git_get_project_owner {
1758        my $project = shift;
1759        my $owner;
1760
1761        return undef unless $project;
1762
1763        if (!defined $gitweb_project_owner) {
1764                git_get_project_list_from_file();
1765        }
1766
1767        if (exists $gitweb_project_owner->{$project}) {
1768                $owner = $gitweb_project_owner->{$project};
1769        }
1770        if (!defined $owner) {
1771                $owner = get_file_owner("$projectroot/$project");
1772        }
1773
1774        return $owner;
1775}
1776
1777sub git_get_last_activity {
1778        my ($path) = @_;
1779        my $fd;
1780
1781        $git_dir = "$projectroot/$path";
1782        open($fd, "-|", git_cmd(), 'for-each-ref',
1783             '--format=%(committer)',
1784             '--sort=-committerdate',
1785             '--count=1',
1786             'refs/heads') or return;
1787        my $most_recent = <$fd>;
1788        close $fd or return;
1789        if (defined $most_recent &&
1790            $most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1791                my $timestamp = $1;
1792                my $age = time - $timestamp;
1793                return ($age, age_string($age));
1794        }
1795        return (undef, undef);
1796}
1797
1798sub git_get_references {
1799        my $type = shift || "";
1800        my %refs;
1801        # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
1802        # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
1803        open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
1804                ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
1805                or return;
1806
1807        while (my $line = <$fd>) {
1808                chomp $line;
1809                if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type/?[^^]+)!) {
1810                        if (defined $refs{$1}) {
1811                                push @{$refs{$1}}, $2;
1812                        } else {
1813                                $refs{$1} = [ $2 ];
1814                        }
1815                }
1816        }
1817        close $fd or return;
1818        return \%refs;
1819}
1820
1821sub git_get_rev_name_tags {
1822        my $hash = shift || return undef;
1823
1824        open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1825                or return;
1826        my $name_rev = <$fd>;
1827        close $fd;
1828
1829        if ($name_rev =~ m|^$hash tags/(.*)$|) {
1830                return $1;
1831        } else {
1832                # catches also '$hash undefined' output
1833                return undef;
1834        }
1835}
1836
1837## ----------------------------------------------------------------------
1838## parse to hash functions
1839
1840sub parse_date {
1841        my $epoch = shift;
1842        my $tz = shift || "-0000";
1843
1844        my %date;
1845        my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1846        my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1847        my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1848        $date{'hour'} = $hour;
1849        $date{'minute'} = $min;
1850        $date{'mday'} = $mday;
1851        $date{'day'} = $days[$wday];
1852        $date{'month'} = $months[$mon];
1853        $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1854                             $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1855        $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1856                             $mday, $months[$mon], $hour ,$min;
1857        $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
1858                             1900+$year, 1+$mon, $mday, $hour ,$min, $sec;
1859
1860        $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1861        my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1862        ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1863        $date{'hour_local'} = $hour;
1864        $date{'minute_local'} = $min;
1865        $date{'tz_local'} = $tz;
1866        $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
1867                                  1900+$year, $mon+1, $mday,
1868                                  $hour, $min, $sec, $tz);
1869        return %date;
1870}
1871
1872sub parse_tag {
1873        my $tag_id = shift;
1874        my %tag;
1875        my @comment;
1876
1877        open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1878        $tag{'id'} = $tag_id;
1879        while (my $line = <$fd>) {
1880                chomp $line;
1881                if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1882                        $tag{'object'} = $1;
1883                } elsif ($line =~ m/^type (.+)$/) {
1884                        $tag{'type'} = $1;
1885                } elsif ($line =~ m/^tag (.+)$/) {
1886                        $tag{'name'} = $1;
1887                } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1888                        $tag{'author'} = $1;
1889                        $tag{'epoch'} = $2;
1890                        $tag{'tz'} = $3;
1891                } elsif ($line =~ m/--BEGIN/) {
1892                        push @comment, $line;
1893                        last;
1894                } elsif ($line eq "") {
1895                        last;
1896                }
1897        }
1898        push @comment, <$fd>;
1899        $tag{'comment'} = \@comment;
1900        close $fd or return;
1901        if (!defined $tag{'name'}) {
1902                return
1903        };
1904        return %tag
1905}
1906
1907sub parse_commit_text {
1908        my ($commit_text, $withparents) = @_;
1909        my @commit_lines = split '\n', $commit_text;
1910        my %co;
1911
1912        pop @commit_lines; # Remove '\0'
1913
1914        if (! @commit_lines) {
1915                return;
1916        }
1917
1918        my $header = shift @commit_lines;
1919        if ($header !~ m/^[0-9a-fA-F]{40}/) {
1920                return;
1921        }
1922        ($co{'id'}, my @parents) = split ' ', $header;
1923        while (my $line = shift @commit_lines) {
1924                last if $line eq "\n";
1925                if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1926                        $co{'tree'} = $1;
1927                } elsif ((!defined $withparents) && ($line =~ m/^parent ([0-9a-fA-F]{40})$/)) {
1928                        push @parents, $1;
1929                } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1930                        $co{'author'} = $1;
1931                        $co{'author_epoch'} = $2;
1932                        $co{'author_tz'} = $3;
1933                        if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
1934                                $co{'author_name'}  = $1;
1935                                $co{'author_email'} = $2;
1936                        } else {
1937                                $co{'author_name'} = $co{'author'};
1938                        }
1939                } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1940                        $co{'committer'} = $1;
1941                        $co{'committer_epoch'} = $2;
1942                        $co{'committer_tz'} = $3;
1943                        $co{'committer_name'} = $co{'committer'};
1944                        if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
1945                                $co{'committer_name'}  = $1;
1946                                $co{'committer_email'} = $2;
1947                        } else {
1948                                $co{'committer_name'} = $co{'committer'};
1949                        }
1950                }
1951        }
1952        if (!defined $co{'tree'}) {
1953                return;
1954        };
1955        $co{'parents'} = \@parents;
1956        $co{'parent'} = $parents[0];
1957
1958        foreach my $title (@commit_lines) {
1959                $title =~ s/^    //;
1960                if ($title ne "") {
1961                        $co{'title'} = chop_str($title, 80, 5);
1962                        # remove leading stuff of merges to make the interesting part visible
1963                        if (length($title) > 50) {
1964                                $title =~ s/^Automatic //;
1965                                $title =~ s/^merge (of|with) /Merge ... /i;
1966                                if (length($title) > 50) {
1967                                        $title =~ s/(http|rsync):\/\///;
1968                                }
1969                                if (length($title) > 50) {
1970                                        $title =~ s/(master|www|rsync)\.//;
1971                                }
1972                                if (length($title) > 50) {
1973                                        $title =~ s/kernel.org:?//;
1974                                }
1975                                if (length($title) > 50) {
1976                                        $title =~ s/\/pub\/scm//;
1977                                }
1978                        }
1979                        $co{'title_short'} = chop_str($title, 50, 5);
1980                        last;
1981                }
1982        }
1983        if ($co{'title'} eq "") {
1984                $co{'title'} = $co{'title_short'} = '(no commit message)';
1985        }
1986        # remove added spaces
1987        foreach my $line (@commit_lines) {
1988                $line =~ s/^    //;
1989        }
1990        $co{'comment'} = \@commit_lines;
1991
1992        my $age = time - $co{'committer_epoch'};
1993        $co{'age'} = $age;
1994        $co{'age_string'} = age_string($age);
1995        my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1996        if ($age > 60*60*24*7*2) {
1997                $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1998                $co{'age_string_age'} = $co{'age_string'};
1999        } else {
2000                $co{'age_string_date'} = $co{'age_string'};
2001                $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
2002        }
2003        return %co;
2004}
2005
2006sub parse_commit {
2007        my ($commit_id) = @_;
2008        my %co;
2009
2010        local $/ = "\0";
2011
2012        open my $fd, "-|", git_cmd(), "rev-list",
2013                "--parents",
2014                "--header",
2015                "--max-count=1",
2016                $commit_id,
2017                "--",
2018                or die_error(undef, "Open git-rev-list failed");
2019        %co = parse_commit_text(<$fd>, 1);
2020        close $fd;
2021
2022        return %co;
2023}
2024
2025sub parse_commits {
2026        my ($commit_id, $maxcount, $skip, $arg, $filename) = @_;
2027        my @cos;
2028
2029        $maxcount ||= 1;
2030        $skip ||= 0;
2031
2032        local $/ = "\0";
2033
2034        open my $fd, "-|", git_cmd(), "rev-list",
2035                "--header",
2036                ($arg ? ($arg) : ()),
2037                ("--max-count=" . $maxcount),
2038                ("--skip=" . $skip),
2039                @extra_options,
2040                $commit_id,
2041                "--",
2042                ($filename ? ($filename) : ())
2043                or die_error(undef, "Open git-rev-list failed");
2044        while (my $line = <$fd>) {
2045                my %co = parse_commit_text($line);
2046                push @cos, \%co;
2047        }
2048        close $fd;
2049
2050        return wantarray ? @cos : \@cos;
2051}
2052
2053# parse ref from ref_file, given by ref_id, with given type
2054sub parse_ref {
2055        my $ref_file = shift;
2056        my $ref_id = shift;
2057        my $type = shift || git_get_type($ref_id);
2058        my %ref_item;
2059
2060        $ref_item{'type'} = $type;
2061        $ref_item{'id'} = $ref_id;
2062        $ref_item{'epoch'} = 0;
2063        $ref_item{'age'} = "unknown";
2064        if ($type eq "tag") {
2065                my %tag = parse_tag($ref_id);
2066                $ref_item{'comment'} = $tag{'comment'};
2067                if ($tag{'type'} eq "commit") {
2068                        my %co = parse_commit($tag{'object'});
2069                        $ref_item{'epoch'} = $co{'committer_epoch'};
2070                        $ref_item{'age'} = $co{'age_string'};
2071                } elsif (defined($tag{'epoch'})) {
2072                        my $age = time - $tag{'epoch'};
2073                        $ref_item{'epoch'} = $tag{'epoch'};
2074                        $ref_item{'age'} = age_string($age);
2075                }
2076                $ref_item{'reftype'} = $tag{'type'};
2077                $ref_item{'name'} = $tag{'name'};
2078                $ref_item{'refid'} = $tag{'object'};
2079        } elsif ($type eq "commit"){
2080                my %co = parse_commit($ref_id);
2081                $ref_item{'reftype'} = "commit";
2082                $ref_item{'name'} = $ref_file;
2083                $ref_item{'title'} = $co{'title'};
2084                $ref_item{'refid'} = $ref_id;
2085                $ref_item{'epoch'} = $co{'committer_epoch'};
2086                $ref_item{'age'} = $co{'age_string'};
2087        } else {
2088                $ref_item{'reftype'} = $type;
2089                $ref_item{'name'} = $ref_file;
2090                $ref_item{'refid'} = $ref_id;
2091        }
2092
2093        return %ref_item;
2094}
2095
2096# parse line of git-diff-tree "raw" output
2097sub parse_difftree_raw_line {
2098        my $line = shift;
2099        my %res;
2100
2101        # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
2102        # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
2103        if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
2104                $res{'from_mode'} = $1;
2105                $res{'to_mode'} = $2;
2106                $res{'from_id'} = $3;
2107                $res{'to_id'} = $4;
2108                $res{'status'} = $res{'status_str'} = $5;
2109                $res{'similarity'} = $6;
2110                if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
2111                        ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
2112                } else {
2113                        $res{'from_file'} = $res{'to_file'} = $res{'file'} = unquote($7);
2114                }
2115        }
2116        # '::100755 100755 100755 60e79ca1b01bc8b057abe17ddab484699a7f5fdb 94067cc5f73388f33722d52ae02f44692bc07490 94067cc5f73388f33722d52ae02f44692bc07490 MR git-gui/git-gui.sh'
2117        # combined diff (for merge commit)
2118        elsif ($line =~ s/^(::+)((?:[0-7]{6} )+)((?:[0-9a-fA-F]{40} )+)([a-zA-Z]+)\t(.*)$//) {
2119                $res{'nparents'}  = length($1);
2120                $res{'from_mode'} = [ split(' ', $2) ];
2121                $res{'to_mode'} = pop @{$res{'from_mode'}};
2122                $res{'from_id'} = [ split(' ', $3) ];
2123                $res{'to_id'} = pop @{$res{'from_id'}};
2124                $res{'status_str'} = $4;
2125                $res{'status'} = [ split('', $4) ];
2126                $res{'to_file'} = unquote($5);
2127        }
2128        # 'c512b523472485aef4fff9e57b229d9d243c967f'
2129        elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
2130                $res{'commit'} = $1;
2131        }
2132
2133        return wantarray ? %res : \%res;
2134}
2135
2136# wrapper: return parsed line of git-diff-tree "raw" output
2137# (the argument might be raw line, or parsed info)
2138sub parsed_difftree_line {
2139        my $line_or_ref = shift;
2140
2141        if (ref($line_or_ref) eq "HASH") {
2142                # pre-parsed (or generated by hand)
2143                return $line_or_ref;
2144        } else {
2145                return parse_difftree_raw_line($line_or_ref);
2146        }
2147}
2148
2149# parse line of git-ls-tree output
2150sub parse_ls_tree_line ($;%) {
2151        my $line = shift;
2152        my %opts = @_;
2153        my %res;
2154
2155        #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
2156        $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
2157
2158        $res{'mode'} = $1;
2159        $res{'type'} = $2;
2160        $res{'hash'} = $3;
2161        if ($opts{'-z'}) {
2162                $res{'name'} = $4;
2163        } else {
2164                $res{'name'} = unquote($4);
2165        }
2166
2167        return wantarray ? %res : \%res;
2168}
2169
2170# generates _two_ hashes, references to which are passed as 2 and 3 argument
2171sub parse_from_to_diffinfo {
2172        my ($diffinfo, $from, $to, @parents) = @_;
2173
2174        if ($diffinfo->{'nparents'}) {
2175                # combined diff
2176                $from->{'file'} = [];
2177                $from->{'href'} = [];
2178                fill_from_file_info($diffinfo, @parents)
2179                        unless exists $diffinfo->{'from_file'};
2180                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2181                        $from->{'file'}[$i] =
2182                                defined $diffinfo->{'from_file'}[$i] ?
2183                                        $diffinfo->{'from_file'}[$i] :
2184                                        $diffinfo->{'to_file'};
2185                        if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
2186                                $from->{'href'}[$i] = href(action=>"blob",
2187                                                           hash_base=>$parents[$i],
2188                                                           hash=>$diffinfo->{'from_id'}[$i],
2189                                                           file_name=>$from->{'file'}[$i]);
2190                        } else {
2191                                $from->{'href'}[$i] = undef;
2192                        }
2193                }
2194        } else {
2195                # ordinary (not combined) diff
2196                $from->{'file'} = $diffinfo->{'from_file'};
2197                if ($diffinfo->{'status'} ne "A") { # not new (added) file
2198                        $from->{'href'} = href(action=>"blob", hash_base=>$hash_parent,
2199                                               hash=>$diffinfo->{'from_id'},
2200                                               file_name=>$from->{'file'});
2201                } else {
2202                        delete $from->{'href'};
2203                }
2204        }
2205
2206        $to->{'file'} = $diffinfo->{'to_file'};
2207        if (!is_deleted($diffinfo)) { # file exists in result
2208                $to->{'href'} = href(action=>"blob", hash_base=>$hash,
2209                                     hash=>$diffinfo->{'to_id'},
2210                                     file_name=>$to->{'file'});
2211        } else {
2212                delete $to->{'href'};
2213        }
2214}
2215
2216## ......................................................................
2217## parse to array of hashes functions
2218
2219sub git_get_heads_list {
2220        my $limit = shift;
2221        my @headslist;
2222
2223        open my $fd, '-|', git_cmd(), 'for-each-ref',
2224                ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
2225                '--format=%(objectname) %(refname) %(subject)%00%(committer)',
2226                'refs/heads'
2227                or return;
2228        while (my $line = <$fd>) {
2229                my %ref_item;
2230
2231                chomp $line;
2232                my ($refinfo, $committerinfo) = split(/\0/, $line);
2233                my ($hash, $name, $title) = split(' ', $refinfo, 3);
2234                my ($committer, $epoch, $tz) =
2235                        ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
2236                $ref_item{'fullname'}  = $name;
2237                $name =~ s!^refs/heads/!!;
2238
2239                $ref_item{'name'}  = $name;
2240                $ref_item{'id'}    = $hash;
2241                $ref_item{'title'} = $title || '(no commit message)';
2242                $ref_item{'epoch'} = $epoch;
2243                if ($epoch) {
2244                        $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
2245                } else {
2246                        $ref_item{'age'} = "unknown";
2247                }
2248
2249                push @headslist, \%ref_item;
2250        }
2251        close $fd;
2252
2253        return wantarray ? @headslist : \@headslist;
2254}
2255
2256sub git_get_tags_list {
2257        my $limit = shift;
2258        my @tagslist;
2259
2260        open my $fd, '-|', git_cmd(), 'for-each-ref',
2261                ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
2262                '--format=%(objectname) %(objecttype) %(refname) '.
2263                '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
2264                'refs/tags'
2265                or return;
2266        while (my $line = <$fd>) {
2267                my %ref_item;
2268
2269                chomp $line;
2270                my ($refinfo, $creatorinfo) = split(/\0/, $line);
2271                my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
2272                my ($creator, $epoch, $tz) =
2273                        ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
2274                $ref_item{'fullname'} = $name;
2275                $name =~ s!^refs/tags/!!;
2276
2277                $ref_item{'type'} = $type;
2278                $ref_item{'id'} = $id;
2279                $ref_item{'name'} = $name;
2280                if ($type eq "tag") {
2281                        $ref_item{'subject'} = $title;
2282                        $ref_item{'reftype'} = $reftype;
2283                        $ref_item{'refid'}   = $refid;
2284                } else {
2285                        $ref_item{'reftype'} = $type;
2286                        $ref_item{'refid'}   = $id;
2287                }
2288
2289                if ($type eq "tag" || $type eq "commit") {
2290                        $ref_item{'epoch'} = $epoch;
2291                        if ($epoch) {
2292                                $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
2293                        } else {
2294                                $ref_item{'age'} = "unknown";
2295                        }
2296                }
2297
2298                push @tagslist, \%ref_item;
2299        }
2300        close $fd;
2301
2302        return wantarray ? @tagslist : \@tagslist;
2303}
2304
2305## ----------------------------------------------------------------------
2306## filesystem-related functions
2307
2308sub get_file_owner {
2309        my $path = shift;
2310
2311        my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
2312        my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
2313        if (!defined $gcos) {
2314                return undef;
2315        }
2316        my $owner = $gcos;
2317        $owner =~ s/[,;].*$//;
2318        return to_utf8($owner);
2319}
2320
2321## ......................................................................
2322## mimetype related functions
2323
2324sub mimetype_guess_file {
2325        my $filename = shift;
2326        my $mimemap = shift;
2327        -r $mimemap or return undef;
2328
2329        my %mimemap;
2330        open(MIME, $mimemap) or return undef;
2331        while (<MIME>) {
2332                next if m/^#/; # skip comments
2333                my ($mime, $exts) = split(/\t+/);
2334                if (defined $exts) {
2335                        my @exts = split(/\s+/, $exts);
2336                        foreach my $ext (@exts) {
2337                                $mimemap{$ext} = $mime;
2338                        }
2339                }
2340        }
2341        close(MIME);
2342
2343        $filename =~ /\.([^.]*)$/;
2344        return $mimemap{$1};
2345}
2346
2347sub mimetype_guess {
2348        my $filename = shift;
2349        my $mime;
2350        $filename =~ /\./ or return undef;
2351
2352        if ($mimetypes_file) {
2353                my $file = $mimetypes_file;
2354                if ($file !~ m!^/!) { # if it is relative path
2355                        # it is relative to project
2356                        $file = "$projectroot/$project/$file";
2357                }
2358                $mime = mimetype_guess_file($filename, $file);
2359        }
2360        $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
2361        return $mime;
2362}
2363
2364sub blob_mimetype {
2365        my $fd = shift;
2366        my $filename = shift;
2367
2368        if ($filename) {
2369                my $mime = mimetype_guess($filename);
2370                $mime and return $mime;
2371        }
2372
2373        # just in case
2374        return $default_blob_plain_mimetype unless $fd;
2375
2376        if (-T $fd) {
2377                return 'text/plain' .
2378                       ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
2379        } elsif (! $filename) {
2380                return 'application/octet-stream';
2381        } elsif ($filename =~ m/\.png$/i) {
2382                return 'image/png';
2383        } elsif ($filename =~ m/\.gif$/i) {
2384                return 'image/gif';
2385        } elsif ($filename =~ m/\.jpe?g$/i) {
2386                return 'image/jpeg';
2387        } else {
2388                return 'application/octet-stream';
2389        }
2390}
2391
2392## ======================================================================
2393## functions printing HTML: header, footer, error page
2394
2395sub git_header_html {
2396        my $status = shift || "200 OK";
2397        my $expires = shift;
2398
2399        my $title = "$site_name";
2400        if (defined $project) {
2401                $title .= " - " . to_utf8($project);
2402                if (defined $action) {
2403                        $title .= "/$action";
2404                        if (defined $file_name) {
2405                                $title .= " - " . esc_path($file_name);
2406                                if ($action eq "tree" && $file_name !~ m|/$|) {
2407                                        $title .= "/";
2408                                }
2409                        }
2410                }
2411        }
2412        my $content_type;
2413        # require explicit support from the UA if we are to send the page as
2414        # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
2415        # we have to do this because MSIE sometimes globs '*/*', pretending to
2416        # support xhtml+xml but choking when it gets what it asked for.
2417        if (defined $cgi->http('HTTP_ACCEPT') &&
2418            $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
2419            $cgi->Accept('application/xhtml+xml') != 0) {
2420                $content_type = 'application/xhtml+xml';
2421        } else {
2422                $content_type = 'text/html';
2423        }
2424        print $cgi->header(-type=>$content_type, -charset => 'utf-8',
2425                           -status=> $status, -expires => $expires);
2426        my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
2427        print <<EOF;
2428<?xml version="1.0" encoding="utf-8"?>
2429<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
2430<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
2431<!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
2432<!-- git core binaries version $git_version -->
2433<head>
2434<meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
2435<meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
2436<meta name="robots" content="index, nofollow"/>
2437<title>$title</title>
2438EOF
2439# print out each stylesheet that exist
2440        if (defined $stylesheet) {
2441#provides backwards capability for those people who define style sheet in a config file
2442                print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
2443        } else {
2444                foreach my $stylesheet (@stylesheets) {
2445                        next unless $stylesheet;
2446                        print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
2447                }
2448        }
2449        if (defined $project) {
2450                printf('<link rel="alternate" title="%s log RSS feed" '.
2451                       'href="%s" type="application/rss+xml" />'."\n",
2452                       esc_param($project), href(action=>"rss"));
2453                printf('<link rel="alternate" title="%s log RSS feed (no merges)" '.
2454                       'href="%s" type="application/rss+xml" />'."\n",
2455                       esc_param($project), href(action=>"rss",
2456                                                 extra_options=>"--no-merges"));
2457                printf('<link rel="alternate" title="%s log Atom feed" '.
2458                       'href="%s" type="application/atom+xml" />'."\n",
2459                       esc_param($project), href(action=>"atom"));
2460                printf('<link rel="alternate" title="%s log Atom feed (no merges)" '.
2461                       'href="%s" type="application/atom+xml" />'."\n",
2462                       esc_param($project), href(action=>"atom",
2463                                                 extra_options=>"--no-merges"));
2464        } else {
2465                printf('<link rel="alternate" title="%s projects list" '.
2466                       'href="%s" type="text/plain; charset=utf-8"/>'."\n",
2467                       $site_name, href(project=>undef, action=>"project_index"));
2468                printf('<link rel="alternate" title="%s projects feeds" '.
2469                       'href="%s" type="text/x-opml"/>'."\n",
2470                       $site_name, href(project=>undef, action=>"opml"));
2471        }
2472        if (defined $favicon) {
2473                print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
2474        }
2475
2476        print "</head>\n" .
2477              "<body>\n";
2478
2479        if (-f $site_header) {
2480                open (my $fd, $site_header);
2481                print <$fd>;
2482                close $fd;
2483        }
2484
2485        print "<div class=\"page_header\">\n" .
2486              $cgi->a({-href => esc_url($logo_url),
2487                       -title => $logo_label},
2488                      qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
2489        print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
2490        if (defined $project) {
2491                print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
2492                if (defined $action) {
2493                        print " / $action";
2494                }
2495                print "\n";
2496        }
2497        print "</div>\n";
2498
2499        my ($have_search) = gitweb_check_feature('search');
2500        if ((defined $project) && ($have_search)) {
2501                if (!defined $searchtext) {
2502                        $searchtext = "";
2503                }
2504                my $search_hash;
2505                if (defined $hash_base) {
2506                        $search_hash = $hash_base;
2507                } elsif (defined $hash) {
2508                        $search_hash = $hash;
2509                } else {
2510                        $search_hash = "HEAD";
2511                }
2512                my $action = $my_uri;
2513                my ($use_pathinfo) = gitweb_check_feature('pathinfo');
2514                if ($use_pathinfo) {
2515                        $action .= "/$project";
2516                } else {
2517                        $cgi->param("p", $project);
2518                }
2519                $cgi->param("a", "search");
2520                $cgi->param("h", $search_hash);
2521                print $cgi->startform(-method => "get", -action => $action) .
2522                      "<div class=\"search\">\n" .
2523                      (!$use_pathinfo && $cgi->hidden(-name => "p") . "\n") .
2524                      $cgi->hidden(-name => "a") . "\n" .
2525                      $cgi->hidden(-name => "h") . "\n" .
2526                      $cgi->popup_menu(-name => 'st', -default => 'commit',
2527                                       -values => ['commit', 'grep', 'author', 'committer', 'pickaxe']) .
2528                      $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
2529                      " search:\n",
2530                      $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
2531                      "</div>" .
2532                      $cgi->end_form() . "\n";
2533        }
2534}
2535
2536sub git_footer_html {
2537        print "<div class=\"page_footer\">\n";
2538        if (defined $project) {
2539                my $descr = git_get_project_description($project);
2540                if (defined $descr) {
2541                        print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
2542                }
2543                print $cgi->a({-href => href(action=>"rss"),
2544                              -class => "rss_logo"}, "RSS") . " ";
2545                print $cgi->a({-href => href(action=>"atom"),
2546                              -class => "rss_logo"}, "Atom") . "\n";
2547        } else {
2548                print $cgi->a({-href => href(project=>undef, action=>"opml"),
2549                              -class => "rss_logo"}, "OPML") . " ";
2550                print $cgi->a({-href => href(project=>undef, action=>"project_index"),
2551                              -class => "rss_logo"}, "TXT") . "\n";
2552        }
2553        print "</div>\n" ;
2554
2555        if (-f $site_footer) {
2556                open (my $fd, $site_footer);
2557                print <$fd>;
2558                close $fd;
2559        }
2560
2561        print "</body>\n" .
2562              "</html>";
2563}
2564
2565sub die_error {
2566        my $status = shift || "403 Forbidden";
2567        my $error = shift || "Malformed query, file missing or permission denied";
2568
2569        git_header_html($status);
2570        print <<EOF;
2571<div class="page_body">
2572<br /><br />
2573$status - $error
2574<br />
2575</div>
2576EOF
2577        git_footer_html();
2578        exit;
2579}
2580
2581## ----------------------------------------------------------------------
2582## functions printing or outputting HTML: navigation
2583
2584sub git_print_page_nav {
2585        my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
2586        $extra = '' if !defined $extra; # pager or formats
2587
2588        my @navs = qw(summary shortlog log commit commitdiff tree);
2589        if ($suppress) {
2590                @navs = grep { $_ ne $suppress } @navs;
2591        }
2592
2593        my %arg = map { $_ => {action=>$_} } @navs;
2594        if (defined $head) {
2595                for (qw(commit commitdiff)) {
2596                        $arg{$_}{'hash'} = $head;
2597                }
2598                if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
2599                        for (qw(shortlog log)) {
2600                                $arg{$_}{'hash'} = $head;
2601                        }
2602                }
2603        }
2604        $arg{'tree'}{'hash'} = $treehead if defined $treehead;
2605        $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
2606
2607        print "<div class=\"page_nav\">\n" .
2608                (join " | ",
2609                 map { $_ eq $current ?
2610                       $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
2611                 } @navs);
2612        print "<br/>\n$extra<br/>\n" .
2613              "</div>\n";
2614}
2615
2616sub format_paging_nav {
2617        my ($action, $hash, $head, $page, $nrevs) = @_;
2618        my $paging_nav;
2619
2620
2621        if ($hash ne $head || $page) {
2622                $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
2623        } else {
2624                $paging_nav .= "HEAD";
2625        }
2626
2627        if ($page > 0) {
2628                $paging_nav .= " &sdot; " .
2629                        $cgi->a({-href => href(-replay=>1, page=>$page-1),
2630                                 -accesskey => "p", -title => "Alt-p"}, "prev");
2631        } else {
2632                $paging_nav .= " &sdot; prev";
2633        }
2634
2635        if ($nrevs >= (100 * ($page+1)-1)) {
2636                $paging_nav .= " &sdot; " .
2637                        $cgi->a({-href => href(-replay=>1, page=>$page+1),
2638                                 -accesskey => "n", -title => "Alt-n"}, "next");
2639        } else {
2640                $paging_nav .= " &sdot; next";
2641        }
2642
2643        return $paging_nav;
2644}
2645
2646## ......................................................................
2647## functions printing or outputting HTML: div
2648
2649sub git_print_header_div {
2650        my ($action, $title, $hash, $hash_base) = @_;
2651        my %args = ();
2652
2653        $args{'action'} = $action;
2654        $args{'hash'} = $hash if $hash;
2655        $args{'hash_base'} = $hash_base if $hash_base;
2656
2657        print "<div class=\"header\">\n" .
2658              $cgi->a({-href => href(%args), -class => "title"},
2659              $title ? $title : $action) .
2660              "\n</div>\n";
2661}
2662
2663#sub git_print_authorship (\%) {
2664sub git_print_authorship {
2665        my $co = shift;
2666
2667        my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
2668        print "<div class=\"author_date\">" .
2669              esc_html($co->{'author_name'}) .
2670              " [$ad{'rfc2822'}";
2671        if ($ad{'hour_local'} < 6) {
2672                printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
2673                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2674        } else {
2675                printf(" (%02d:%02d %s)",
2676                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2677        }
2678        print "]</div>\n";
2679}
2680
2681sub git_print_page_path {
2682        my $name = shift;
2683        my $type = shift;
2684        my $hb = shift;
2685
2686
2687        print "<div class=\"page_path\">";
2688        print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
2689                      -title => 'tree root'}, to_utf8("[$project]"));
2690        print " / ";
2691        if (defined $name) {
2692                my @dirname = split '/', $name;
2693                my $basename = pop @dirname;
2694                my $fullname = '';
2695
2696                foreach my $dir (@dirname) {
2697                        $fullname .= ($fullname ? '/' : '') . $dir;
2698                        print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
2699                                                     hash_base=>$hb),
2700                                      -title => $fullname}, esc_path($dir));
2701                        print " / ";
2702                }
2703                if (defined $type && $type eq 'blob') {
2704                        print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
2705                                                     hash_base=>$hb),
2706                                      -title => $name}, esc_path($basename));
2707                } elsif (defined $type && $type eq 'tree') {
2708                        print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
2709                                                     hash_base=>$hb),
2710                                      -title => $name}, esc_path($basename));
2711                        print " / ";
2712                } else {
2713                        print esc_path($basename);
2714                }
2715        }
2716        print "<br/></div>\n";
2717}
2718
2719# sub git_print_log (\@;%) {
2720sub git_print_log ($;%) {
2721        my $log = shift;
2722        my %opts = @_;
2723
2724        if ($opts{'-remove_title'}) {
2725                # remove title, i.e. first line of log
2726                shift @$log;
2727        }
2728        # remove leading empty lines
2729        while (defined $log->[0] && $log->[0] eq "") {
2730                shift @$log;
2731        }
2732
2733        # print log
2734        my $signoff = 0;
2735        my $empty = 0;
2736        foreach my $line (@$log) {
2737                if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2738                        $signoff = 1;
2739                        $empty = 0;
2740                        if (! $opts{'-remove_signoff'}) {
2741                                print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
2742                                next;
2743                        } else {
2744                                # remove signoff lines
2745                                next;
2746                        }
2747                } else {
2748                        $signoff = 0;
2749                }
2750
2751                # print only one empty line
2752                # do not print empty line after signoff
2753                if ($line eq "") {
2754                        next if ($empty || $signoff);
2755                        $empty = 1;
2756                } else {
2757                        $empty = 0;
2758                }
2759
2760                print format_log_line_html($line) . "<br/>\n";
2761        }
2762
2763        if ($opts{'-final_empty_line'}) {
2764                # end with single empty line
2765                print "<br/>\n" unless $empty;
2766        }
2767}
2768
2769# return link target (what link points to)
2770sub git_get_link_target {
2771        my $hash = shift;
2772        my $link_target;
2773
2774        # read link
2775        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2776                or return;
2777        {
2778                local $/;
2779                $link_target = <$fd>;
2780        }
2781        close $fd
2782                or return;
2783
2784        return $link_target;
2785}
2786
2787# given link target, and the directory (basedir) the link is in,
2788# return target of link relative to top directory (top tree);
2789# return undef if it is not possible (including absolute links).
2790sub normalize_link_target {
2791        my ($link_target, $basedir, $hash_base) = @_;
2792
2793        # we can normalize symlink target only if $hash_base is provided
2794        return unless $hash_base;
2795
2796        # absolute symlinks (beginning with '/') cannot be normalized
2797        return if (substr($link_target, 0, 1) eq '/');
2798
2799        # normalize link target to path from top (root) tree (dir)
2800        my $path;
2801        if ($basedir) {
2802                $path = $basedir . '/' . $link_target;
2803        } else {
2804                # we are in top (root) tree (dir)
2805                $path = $link_target;
2806        }
2807
2808        # remove //, /./, and /../
2809        my @path_parts;
2810        foreach my $part (split('/', $path)) {
2811                # discard '.' and ''
2812                next if (!$part || $part eq '.');
2813                # handle '..'
2814                if ($part eq '..') {
2815                        if (@path_parts) {
2816                                pop @path_parts;
2817                        } else {
2818                                # link leads outside repository (outside top dir)
2819                                return;
2820                        }
2821                } else {
2822                        push @path_parts, $part;
2823                }
2824        }
2825        $path = join('/', @path_parts);
2826
2827        return $path;
2828}
2829
2830# print tree entry (row of git_tree), but without encompassing <tr> element
2831sub git_print_tree_entry {
2832        my ($t, $basedir, $hash_base, $have_blame) = @_;
2833
2834        my %base_key = ();
2835        $base_key{'hash_base'} = $hash_base if defined $hash_base;
2836
2837        # The format of a table row is: mode list link.  Where mode is
2838        # the mode of the entry, list is the name of the entry, an href,
2839        # and link is the action links of the entry.
2840
2841        print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
2842        if ($t->{'type'} eq "blob") {
2843                print "<td class=\"list\">" .
2844                        $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2845                                               file_name=>"$basedir$t->{'name'}", %base_key),
2846                                -class => "list"}, esc_path($t->{'name'}));
2847                if (S_ISLNK(oct $t->{'mode'})) {
2848                        my $link_target = git_get_link_target($t->{'hash'});
2849                        if ($link_target) {
2850                                my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
2851                                if (defined $norm_target) {
2852                                        print " -> " .
2853                                              $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
2854                                                                     file_name=>$norm_target),
2855                                                       -title => $norm_target}, esc_path($link_target));
2856                                } else {
2857                                        print " -> " . esc_path($link_target);
2858                                }
2859                        }
2860                }
2861                print "</td>\n";
2862                print "<td class=\"link\">";
2863                print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2864                                             file_name=>"$basedir$t->{'name'}", %base_key)},
2865                              "blob");
2866                if ($have_blame) {
2867                        print " | " .
2868                              $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
2869                                                     file_name=>"$basedir$t->{'name'}", %base_key)},
2870                                      "blame");
2871                }
2872                if (defined $hash_base) {
2873                        print " | " .
2874                              $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2875                                                     hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
2876                                      "history");
2877                }
2878                print " | " .
2879                        $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
2880                                               file_name=>"$basedir$t->{'name'}")},
2881                                "raw");
2882                print "</td>\n";
2883
2884        } elsif ($t->{'type'} eq "tree") {
2885                print "<td class=\"list\">";
2886                print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2887                                             file_name=>"$basedir$t->{'name'}", %base_key)},
2888                              esc_path($t->{'name'}));
2889                print "</td>\n";
2890                print "<td class=\"link\">";
2891                print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2892                                             file_name=>"$basedir$t->{'name'}", %base_key)},
2893                              "tree");
2894                if (defined $hash_base) {
2895                        print " | " .
2896                              $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2897                                                     file_name=>"$basedir$t->{'name'}")},
2898                                      "history");
2899                }
2900                print "</td>\n";
2901        } else {
2902                # unknown object: we can only present history for it
2903                # (this includes 'commit' object, i.e. submodule support)
2904                print "<td class=\"list\">" .
2905                      esc_path($t->{'name'}) .
2906                      "</td>\n";
2907                print "<td class=\"link\">";
2908                if (defined $hash_base) {
2909                        print $cgi->a({-href => href(action=>"history",
2910                                                     hash_base=>$hash_base,
2911                                                     file_name=>"$basedir$t->{'name'}")},
2912                                      "history");
2913                }
2914                print "</td>\n";
2915        }
2916}
2917
2918## ......................................................................
2919## functions printing large fragments of HTML
2920
2921# get pre-image filenames for merge (combined) diff
2922sub fill_from_file_info {
2923        my ($diff, @parents) = @_;
2924
2925        $diff->{'from_file'} = [ ];
2926        $diff->{'from_file'}[$diff->{'nparents'} - 1] = undef;
2927        for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2928                if ($diff->{'status'}[$i] eq 'R' ||
2929                    $diff->{'status'}[$i] eq 'C') {
2930                        $diff->{'from_file'}[$i] =
2931                                git_get_path_by_hash($parents[$i], $diff->{'from_id'}[$i]);
2932                }
2933        }
2934
2935        return $diff;
2936}
2937
2938# is current raw difftree line of file deletion
2939sub is_deleted {
2940        my $diffinfo = shift;
2941
2942        return $diffinfo->{'status_str'} =~ /D/;
2943}
2944
2945# does patch correspond to [previous] difftree raw line
2946# $diffinfo  - hashref of parsed raw diff format
2947# $patchinfo - hashref of parsed patch diff format
2948#              (the same keys as in $diffinfo)
2949sub is_patch_split {
2950        my ($diffinfo, $patchinfo) = @_;
2951
2952        return defined $diffinfo && defined $patchinfo
2953                && $diffinfo->{'to_file'} eq $patchinfo->{'to_file'};
2954}
2955
2956
2957sub git_difftree_body {
2958        my ($difftree, $hash, @parents) = @_;
2959        my ($parent) = $parents[0];
2960        my ($have_blame) = gitweb_check_feature('blame');
2961        print "<div class=\"list_head\">\n";
2962        if ($#{$difftree} > 10) {
2963                print(($#{$difftree} + 1) . " files changed:\n");
2964        }
2965        print "</div>\n";
2966
2967        print "<table class=\"" .
2968              (@parents > 1 ? "combined " : "") .
2969              "diff_tree\">\n";
2970
2971        # header only for combined diff in 'commitdiff' view
2972        my $has_header = @$difftree && @parents > 1 && $action eq 'commitdiff';
2973        if ($has_header) {
2974                # table header
2975                print "<thead><tr>\n" .
2976                       "<th></th><th></th>\n"; # filename, patchN link
2977                for (my $i = 0; $i < @parents; $i++) {
2978                        my $par = $parents[$i];
2979                        print "<th>" .
2980                              $cgi->a({-href => href(action=>"commitdiff",
2981                                                     hash=>$hash, hash_parent=>$par),
2982                                       -title => 'commitdiff to parent number ' .
2983                                                  ($i+1) . ': ' . substr($par,0,7)},
2984                                      $i+1) .
2985                              "&nbsp;</th>\n";
2986                }
2987                print "</tr></thead>\n<tbody>\n";
2988        }
2989
2990        my $alternate = 1;
2991        my $patchno = 0;
2992        foreach my $line (@{$difftree}) {
2993                my $diff = parsed_difftree_line($line);
2994
2995                if ($alternate) {
2996                        print "<tr class=\"dark\">\n";
2997                } else {
2998                        print "<tr class=\"light\">\n";
2999                }
3000                $alternate ^= 1;
3001
3002                if (exists $diff->{'nparents'}) { # combined diff
3003
3004                        fill_from_file_info($diff, @parents)
3005                                unless exists $diff->{'from_file'};
3006
3007                        if (!is_deleted($diff)) {
3008                                # file exists in the result (child) commit
3009                                print "<td>" .
3010                                      $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3011                                                             file_name=>$diff->{'to_file'},
3012                                                             hash_base=>$hash),
3013                                              -class => "list"}, esc_path($diff->{'to_file'})) .
3014                                      "</td>\n";
3015                        } else {
3016                                print "<td>" .
3017                                      esc_path($diff->{'to_file'}) .
3018                                      "</td>\n";
3019                        }
3020
3021                        if ($action eq 'commitdiff') {
3022                                # link to patch
3023                                $patchno++;
3024                                print "<td class=\"link\">" .
3025                                      $cgi->a({-href => "#patch$patchno"}, "patch") .
3026                                      " | " .
3027                                      "</td>\n";
3028                        }
3029
3030                        my $has_history = 0;
3031                        my $not_deleted = 0;
3032                        for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
3033                                my $hash_parent = $parents[$i];
3034                                my $from_hash = $diff->{'from_id'}[$i];
3035                                my $from_path = $diff->{'from_file'}[$i];
3036                                my $status = $diff->{'status'}[$i];
3037
3038                                $has_history ||= ($status ne 'A');
3039                                $not_deleted ||= ($status ne 'D');
3040
3041                                if ($status eq 'A') {
3042                                        print "<td  class=\"link\" align=\"right\"> | </td>\n";
3043                                } elsif ($status eq 'D') {
3044                                        print "<td class=\"link\">" .
3045                                              $cgi->a({-href => href(action=>"blob",
3046                                                                     hash_base=>$hash,
3047                                                                     hash=>$from_hash,
3048                                                                     file_name=>$from_path)},
3049                                                      "blob" . ($i+1)) .
3050                                              " | </td>\n";
3051                                } else {
3052                                        if ($diff->{'to_id'} eq $from_hash) {
3053                                                print "<td class=\"link nochange\">";
3054                                        } else {
3055                                                print "<td class=\"link\">";
3056                                        }
3057                                        print $cgi->a({-href => href(action=>"blobdiff",
3058                                                                     hash=>$diff->{'to_id'},
3059                                                                     hash_parent=>$from_hash,
3060                                                                     hash_base=>$hash,
3061                                                                     hash_parent_base=>$hash_parent,
3062                                                                     file_name=>$diff->{'to_file'},
3063                                                                     file_parent=>$from_path)},
3064                                                      "diff" . ($i+1)) .
3065                                              " | </td>\n";
3066                                }
3067                        }
3068
3069                        print "<td class=\"link\">";
3070                        if ($not_deleted) {
3071                                print $cgi->a({-href => href(action=>"blob",
3072                                                             hash=>$diff->{'to_id'},
3073                                                             file_name=>$diff->{'to_file'},
3074                                                             hash_base=>$hash)},
3075                                              "blob");
3076                                print " | " if ($has_history);
3077                        }
3078                        if ($has_history) {
3079                                print $cgi->a({-href => href(action=>"history",
3080                                                             file_name=>$diff->{'to_file'},
3081                                                             hash_base=>$hash)},
3082                                              "history");
3083                        }
3084                        print "</td>\n";
3085
3086                        print "</tr>\n";
3087                        next; # instead of 'else' clause, to avoid extra indent
3088                }
3089                # else ordinary diff
3090
3091                my ($to_mode_oct, $to_mode_str, $to_file_type);
3092                my ($from_mode_oct, $from_mode_str, $from_file_type);
3093                if ($diff->{'to_mode'} ne ('0' x 6)) {
3094                        $to_mode_oct = oct $diff->{'to_mode'};
3095                        if (S_ISREG($to_mode_oct)) { # only for regular file
3096                                $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
3097                        }
3098                        $to_file_type = file_type($diff->{'to_mode'});
3099                }
3100                if ($diff->{'from_mode'} ne ('0' x 6)) {
3101                        $from_mode_oct = oct $diff->{'from_mode'};
3102                        if (S_ISREG($to_mode_oct)) { # only for regular file
3103                                $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
3104                        }
3105                        $from_file_type = file_type($diff->{'from_mode'});
3106                }
3107
3108                if ($diff->{'status'} eq "A") { # created
3109                        my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
3110                        $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
3111                        $mode_chng   .= "]</span>";
3112                        print "<td>";
3113                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3114                                                     hash_base=>$hash, file_name=>$diff->{'file'}),
3115                                      -class => "list"}, esc_path($diff->{'file'}));
3116                        print "</td>\n";
3117                        print "<td>$mode_chng</td>\n";
3118                        print "<td class=\"link\">";
3119                        if ($action eq 'commitdiff') {
3120                                # link to patch
3121                                $patchno++;
3122                                print $cgi->a({-href => "#patch$patchno"}, "patch");
3123                                print " | ";
3124                        }
3125                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3126                                                     hash_base=>$hash, file_name=>$diff->{'file'})},
3127                                      "blob");
3128                        print "</td>\n";
3129
3130                } elsif ($diff->{'status'} eq "D") { # deleted
3131                        my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
3132                        print "<td>";
3133                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
3134                                                     hash_base=>$parent, file_name=>$diff->{'file'}),
3135                                       -class => "list"}, esc_path($diff->{'file'}));
3136                        print "</td>\n";
3137                        print "<td>$mode_chng</td>\n";
3138                        print "<td class=\"link\">";
3139                        if ($action eq 'commitdiff') {
3140                                # link to patch
3141                                $patchno++;
3142                                print $cgi->a({-href => "#patch$patchno"}, "patch");
3143                                print " | ";
3144                        }
3145                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
3146                                                     hash_base=>$parent, file_name=>$diff->{'file'})},
3147                                      "blob") . " | ";
3148                        if ($have_blame) {
3149                                print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
3150                                                             file_name=>$diff->{'file'})},
3151                                              "blame") . " | ";
3152                        }
3153                        print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
3154                                                     file_name=>$diff->{'file'})},
3155                                      "history");
3156                        print "</td>\n";
3157
3158                } elsif ($diff->{'status'} eq "M" || $diff->{'status'} eq "T") { # modified, or type changed
3159                        my $mode_chnge = "";
3160                        if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
3161                                $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
3162                                if ($from_file_type ne $to_file_type) {
3163                                        $mode_chnge .= " from $from_file_type to $to_file_type";
3164                                }
3165                                if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
3166                                        if ($from_mode_str && $to_mode_str) {
3167                                                $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
3168                                        } elsif ($to_mode_str) {
3169                                                $mode_chnge .= " mode: $to_mode_str";
3170                                        }
3171                                }
3172                                $mode_chnge .= "]</span>\n";
3173                        }
3174                        print "<td>";
3175                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3176                                                     hash_base=>$hash, file_name=>$diff->{'file'}),
3177                                      -class => "list"}, esc_path($diff->{'file'}));
3178                        print "</td>\n";
3179                        print "<td>$mode_chnge</td>\n";
3180                        print "<td class=\"link\">";
3181                        if ($action eq 'commitdiff') {
3182                                # link to patch
3183                                $patchno++;
3184                                print $cgi->a({-href => "#patch$patchno"}, "patch") .
3185                                      " | ";
3186                        } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
3187                                # "commit" view and modified file (not onlu mode changed)
3188                                print $cgi->a({-href => href(action=>"blobdiff",
3189                                                             hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
3190                                                             hash_base=>$hash, hash_parent_base=>$parent,
3191                                                             file_name=>$diff->{'file'})},
3192                                              "diff") .
3193                                      " | ";
3194                        }
3195                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3196                                                     hash_base=>$hash, file_name=>$diff->{'file'})},
3197                                       "blob") . " | ";
3198                        if ($have_blame) {
3199                                print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
3200                                                             file_name=>$diff->{'file'})},
3201                                              "blame") . " | ";
3202                        }
3203                        print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
3204                                                     file_name=>$diff->{'file'})},
3205                                      "history");
3206                        print "</td>\n";
3207
3208                } elsif ($diff->{'status'} eq "R" || $diff->{'status'} eq "C") { # renamed or copied
3209                        my %status_name = ('R' => 'moved', 'C' => 'copied');
3210                        my $nstatus = $status_name{$diff->{'status'}};
3211                        my $mode_chng = "";
3212                        if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
3213                                # mode also for directories, so we cannot use $to_mode_str
3214                                $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
3215                        }
3216                        print "<td>" .
3217                              $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
3218                                                     hash=>$diff->{'to_id'}, file_name=>$diff->{'to_file'}),
3219                                      -class => "list"}, esc_path($diff->{'to_file'})) . "</td>\n" .
3220                              "<td><span class=\"file_status $nstatus\">[$nstatus from " .
3221                              $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
3222                                                     hash=>$diff->{'from_id'}, file_name=>$diff->{'from_file'}),
3223                                      -class => "list"}, esc_path($diff->{'from_file'})) .
3224                              " with " . (int $diff->{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
3225                              "<td class=\"link\">";
3226                        if ($action eq 'commitdiff') {
3227                                # link to patch
3228                                $patchno++;
3229                                print $cgi->a({-href => "#patch$patchno"}, "patch") .
3230                                      " | ";
3231                        } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
3232                                # "commit" view and modified file (not only pure rename or copy)
3233                                print $cgi->a({-href => href(action=>"blobdiff",
3234                                                             hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
3235                                                             hash_base=>$hash, hash_parent_base=>$parent,
3236                                                             file_name=>$diff->{'to_file'}, file_parent=>$diff->{'from_file'})},
3237                                              "diff") .
3238                                      " | ";
3239                        }
3240                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3241                                                     hash_base=>$parent, file_name=>$diff->{'to_file'})},
3242                                      "blob") . " | ";
3243                        if ($have_blame) {
3244                                print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
3245                                                             file_name=>$diff->{'to_file'})},
3246                                              "blame") . " | ";
3247                        }
3248                        print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
3249                                                    file_name=>$diff->{'to_file'})},
3250                                      "history");
3251                        print "</td>\n";
3252
3253                } # we should not encounter Unmerged (U) or Unknown (X) status
3254                print "</tr>\n";
3255        }
3256        print "</tbody>" if $has_header;
3257        print "</table>\n";
3258}
3259
3260sub git_patchset_body {
3261        my ($fd, $difftree, $hash, @hash_parents) = @_;
3262        my ($hash_parent) = $hash_parents[0];
3263
3264        my $is_combined = (@hash_parents > 1);
3265        my $patch_idx = 0;
3266        my $patch_number = 0;
3267        my $patch_line;
3268        my $diffinfo;
3269        my $to_name;
3270        my (%from, %to);
3271
3272        print "<div class=\"patchset\">\n";
3273
3274        # skip to first patch
3275        while ($patch_line = <$fd>) {
3276                chomp $patch_line;
3277
3278                last if ($patch_line =~ m/^diff /);
3279        }
3280
3281 PATCH:
3282        while ($patch_line) {
3283
3284                # parse "git diff" header line
3285                if ($patch_line =~ m/^diff --git (\"(?:[^\\\"]*(?:\\.[^\\\"]*)*)\"|[^ "]*) (.*)$/) {
3286                        # $1 is from_name, which we do not use
3287                        $to_name = unquote($2);
3288                        $to_name =~ s!^b/!!;
3289                } elsif ($patch_line =~ m/^diff --(cc|combined) ("?.*"?)$/) {
3290                        # $1 is 'cc' or 'combined', which we do not use
3291                        $to_name = unquote($2);
3292                } else {
3293                        $to_name = undef;
3294                }
3295
3296                # check if current patch belong to current raw line
3297                # and parse raw git-diff line if needed
3298                if (is_patch_split($diffinfo, { 'to_file' => $to_name })) {
3299                        # this is continuation of a split patch
3300                        print "<div class=\"patch cont\">\n";
3301                } else {
3302                        # advance raw git-diff output if needed
3303                        $patch_idx++ if defined $diffinfo;
3304
3305                        # read and prepare patch information
3306                        $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
3307
3308                        # compact combined diff output can have some patches skipped
3309                        # find which patch (using pathname of result) we are at now;
3310                        if ($is_combined) {
3311                                while ($to_name ne $diffinfo->{'to_file'}) {
3312                                        print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
3313                                              format_diff_cc_simplified($diffinfo, @hash_parents) .
3314                                              "</div>\n";  # class="patch"
3315
3316                                        $patch_idx++;
3317                                        $patch_number++;
3318
3319                                        last if $patch_idx > $#$difftree;
3320                                        $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
3321                                }
3322                        }
3323
3324                        # modifies %from, %to hashes
3325                        parse_from_to_diffinfo($diffinfo, \%from, \%to, @hash_parents);
3326
3327                        # this is first patch for raw difftree line with $patch_idx index
3328                        # we index @$difftree array from 0, but number patches from 1
3329                        print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
3330                }
3331
3332                # git diff header
3333                #assert($patch_line =~ m/^diff /) if DEBUG;
3334                #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
3335                $patch_number++;
3336                # print "git diff" header
3337                print format_git_diff_header_line($patch_line, $diffinfo,
3338                                                  \%from, \%to);
3339
3340                # print extended diff header
3341                print "<div class=\"diff extended_header\">\n";
3342        EXTENDED_HEADER:
3343                while ($patch_line = <$fd>) {
3344                        chomp $patch_line;
3345
3346                        last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
3347
3348                        print format_extended_diff_header_line($patch_line, $diffinfo,
3349                                                               \%from, \%to);
3350                }
3351                print "</div>\n"; # class="diff extended_header"
3352
3353                # from-file/to-file diff header
3354                if (! $patch_line) {
3355                        print "</div>\n"; # class="patch"
3356                        last PATCH;
3357                }
3358                next PATCH if ($patch_line =~ m/^diff /);
3359                #assert($patch_line =~ m/^---/) if DEBUG;
3360
3361                my $last_patch_line = $patch_line;
3362                $patch_line = <$fd>;
3363                chomp $patch_line;
3364                #assert($patch_line =~ m/^\+\+\+/) if DEBUG;
3365
3366                print format_diff_from_to_header($last_patch_line, $patch_line,
3367                                                 $diffinfo, \%from, \%to,
3368                                                 @hash_parents);
3369
3370                # the patch itself
3371        LINE:
3372                while ($patch_line = <$fd>) {
3373                        chomp $patch_line;
3374
3375                        next PATCH if ($patch_line =~ m/^diff /);
3376
3377                        print format_diff_line($patch_line, \%from, \%to);
3378                }
3379
3380        } continue {
3381                print "</div>\n"; # class="patch"
3382        }
3383
3384        # for compact combined (--cc) format, with chunk and patch simpliciaction
3385        # patchset might be empty, but there might be unprocessed raw lines
3386        for (++$patch_idx if $patch_number > 0;
3387             $patch_idx < @$difftree;
3388             ++$patch_idx) {
3389                # read and prepare patch information
3390                $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
3391
3392                # generate anchor for "patch" links in difftree / whatchanged part
3393                print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
3394                      format_diff_cc_simplified($diffinfo, @hash_parents) .
3395                      "</div>\n";  # class="patch"
3396
3397                $patch_number++;
3398        }
3399
3400        if ($patch_number == 0) {
3401                if (@hash_parents > 1) {
3402                        print "<div class=\"diff nodifferences\">Trivial merge</div>\n";
3403                } else {
3404                        print "<div class=\"diff nodifferences\">No differences found</div>\n";
3405                }
3406        }
3407
3408        print "</div>\n"; # class="patchset"
3409}
3410
3411# . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3412
3413sub git_project_list_body {
3414        my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
3415
3416        my ($check_forks) = gitweb_check_feature('forks');
3417
3418        my @projects;
3419        foreach my $pr (@$projlist) {
3420                my (@aa) = git_get_last_activity($pr->{'path'});
3421                unless (@aa) {
3422                        next;
3423                }
3424                ($pr->{'age'}, $pr->{'age_string'}) = @aa;
3425                if (!defined $pr->{'descr'}) {
3426                        my $descr = git_get_project_description($pr->{'path'}) || "";
3427                        $pr->{'descr_long'} = to_utf8($descr);
3428                        $pr->{'descr'} = chop_str($descr, $projects_list_description_width, 5);
3429                }
3430                if (!defined $pr->{'owner'}) {
3431                        $pr->{'owner'} = git_get_project_owner("$pr->{'path'}") || "";
3432                }
3433                if ($check_forks) {
3434                        my $pname = $pr->{'path'};
3435                        if (($pname =~ s/\.git$//) &&
3436                            ($pname !~ /\/$/) &&
3437                            (-d "$projectroot/$pname")) {
3438                                $pr->{'forks'} = "-d $projectroot/$pname";
3439                        }
3440                        else {
3441                                $pr->{'forks'} = 0;
3442                        }
3443                }
3444                push @projects, $pr;
3445        }
3446
3447        $order ||= $default_projects_order;
3448        $from = 0 unless defined $from;
3449        $to = $#projects if (!defined $to || $#projects < $to);
3450
3451        print "<table class=\"project_list\">\n";
3452        unless ($no_header) {
3453                print "<tr>\n";
3454                if ($check_forks) {
3455                        print "<th></th>\n";
3456                }
3457                if ($order eq "project") {
3458                        @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
3459                        print "<th>Project</th>\n";
3460                } else {
3461                        print "<th>" .
3462                              $cgi->a({-href => href(project=>undef, order=>'project'),
3463                                       -class => "header"}, "Project") .
3464                              "</th>\n";
3465                }
3466                if ($order eq "descr") {
3467                        @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
3468                        print "<th>Description</th>\n";
3469                } else {
3470                        print "<th>" .
3471                              $cgi->a({-href => href(project=>undef, order=>'descr'),
3472                                       -class => "header"}, "Description") .
3473                              "</th>\n";
3474                }
3475                if ($order eq "owner") {
3476                        @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
3477                        print "<th>Owner</th>\n";
3478                } else {
3479                        print "<th>" .
3480                              $cgi->a({-href => href(project=>undef, order=>'owner'),
3481                                       -class => "header"}, "Owner") .
3482                              "</th>\n";
3483                }
3484                if ($order eq "age") {
3485                        @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
3486                        print "<th>Last Change</th>\n";
3487                } else {
3488                        print "<th>" .
3489                              $cgi->a({-href => href(project=>undef, order=>'age'),
3490                                       -class => "header"}, "Last Change") .
3491                              "</th>\n";
3492                }
3493                print "<th></th>\n" .
3494                      "</tr>\n";
3495        }
3496        my $alternate = 1;
3497        for (my $i = $from; $i <= $to; $i++) {
3498                my $pr = $projects[$i];
3499                if ($alternate) {
3500                        print "<tr class=\"dark\">\n";
3501                } else {
3502                        print "<tr class=\"light\">\n";
3503                }
3504                $alternate ^= 1;
3505                if ($check_forks) {
3506                        print "<td>";
3507                        if ($pr->{'forks'}) {
3508                                print "<!-- $pr->{'forks'} -->\n";
3509                                print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
3510                        }
3511                        print "</td>\n";
3512                }
3513                print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3514                                        -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
3515                      "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3516                                        -class => "list", -title => $pr->{'descr_long'}},
3517                                        esc_html($pr->{'descr'})) . "</td>\n" .
3518                      "<td><i>" . chop_and_escape_str($pr->{'owner'}, 15) . "</i></td>\n";
3519                print "<td class=\"". age_class($pr->{'age'}) . "\">" .
3520                      (defined $pr->{'age_string'} ? $pr->{'age_string'} : "No commits") . "</td>\n" .
3521                      "<td class=\"link\">" .
3522                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
3523                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
3524                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
3525                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
3526                      ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
3527                      "</td>\n" .
3528                      "</tr>\n";
3529        }
3530        if (defined $extra) {
3531                print "<tr>\n";
3532                if ($check_forks) {
3533                        print "<td></td>\n";
3534                }
3535                print "<td colspan=\"5\">$extra</td>\n" .
3536                      "</tr>\n";
3537        }
3538        print "</table>\n";
3539}
3540
3541sub git_shortlog_body {
3542        # uses global variable $project
3543        my ($commitlist, $from, $to, $refs, $extra) = @_;
3544
3545        $from = 0 unless defined $from;
3546        $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3547
3548        print "<table class=\"shortlog\">\n";
3549        my $alternate = 1;
3550        for (my $i = $from; $i <= $to; $i++) {
3551                my %co = %{$commitlist->[$i]};
3552                my $commit = $co{'id'};
3553                my $ref = format_ref_marker($refs, $commit);
3554                if ($alternate) {
3555                        print "<tr class=\"dark\">\n";
3556                } else {
3557                        print "<tr class=\"light\">\n";
3558                }
3559                $alternate ^= 1;
3560                my $author = chop_and_escape_str($co{'author_name'}, 10);
3561                # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
3562                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3563                      "<td><i>" . $author . "</i></td>\n" .
3564                      "<td>";
3565                print format_subject_html($co{'title'}, $co{'title_short'},
3566                                          href(action=>"commit", hash=>$commit), $ref);
3567                print "</td>\n" .
3568                      "<td class=\"link\">" .
3569                      $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
3570                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
3571                      $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
3572                my $snapshot_links = format_snapshot_links($commit);
3573                if (defined $snapshot_links) {
3574                        print " | " . $snapshot_links;
3575                }
3576                print "</td>\n" .
3577                      "</tr>\n";
3578        }
3579        if (defined $extra) {
3580                print "<tr>\n" .
3581                      "<td colspan=\"4\">$extra</td>\n" .
3582                      "</tr>\n";
3583        }
3584        print "</table>\n";
3585}
3586
3587sub git_history_body {
3588        # Warning: assumes constant type (blob or tree) during history
3589        my ($commitlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
3590
3591        $from = 0 unless defined $from;
3592        $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
3593
3594        print "<table class=\"history\">\n";
3595        my $alternate = 1;
3596        for (my $i = $from; $i <= $to; $i++) {
3597                my %co = %{$commitlist->[$i]};
3598                if (!%co) {
3599                        next;
3600                }
3601                my $commit = $co{'id'};
3602
3603                my $ref = format_ref_marker($refs, $commit);
3604
3605                if ($alternate) {
3606                        print "<tr class=\"dark\">\n";
3607                } else {
3608                        print "<tr class=\"light\">\n";
3609                }
3610                $alternate ^= 1;
3611        # shortlog uses      chop_str($co{'author_name'}, 10)
3612                my $author = chop_and_escape_str($co{'author_name'}, 15, 3);
3613                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3614                      "<td><i>" . $author . "</i></td>\n" .
3615                      "<td>";
3616                # originally git_history used chop_str($co{'title'}, 50)
3617                print format_subject_html($co{'title'}, $co{'title_short'},
3618                                          href(action=>"commit", hash=>$commit), $ref);
3619                print "</td>\n" .
3620                      "<td class=\"link\">" .
3621                      $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
3622                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
3623
3624                if ($ftype eq 'blob') {
3625                        my $blob_current = git_get_hash_by_path($hash_base, $file_name);
3626                        my $blob_parent  = git_get_hash_by_path($commit, $file_name);
3627                        if (defined $blob_current && defined $blob_parent &&
3628                                        $blob_current ne $blob_parent) {
3629                                print " | " .
3630                                        $cgi->a({-href => href(action=>"blobdiff",
3631                                                               hash=>$blob_current, hash_parent=>$blob_parent,
3632                                                               hash_base=>$hash_base, hash_parent_base=>$commit,
3633                                                               file_name=>$file_name)},
3634                                                "diff to current");
3635                        }
3636                }
3637                print "</td>\n" .
3638                      "</tr>\n";
3639        }
3640        if (defined $extra) {
3641                print "<tr>\n" .
3642                      "<td colspan=\"4\">$extra</td>\n" .
3643                      "</tr>\n";
3644        }
3645        print "</table>\n";
3646}
3647
3648sub git_tags_body {
3649        # uses global variable $project
3650        my ($taglist, $from, $to, $extra) = @_;
3651        $from = 0 unless defined $from;
3652        $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
3653
3654        print "<table class=\"tags\">\n";
3655        my $alternate = 1;
3656        for (my $i = $from; $i <= $to; $i++) {
3657                my $entry = $taglist->[$i];
3658                my %tag = %$entry;
3659                my $comment = $tag{'subject'};
3660                my $comment_short;
3661                if (defined $comment) {
3662                        $comment_short = chop_str($comment, 30, 5);
3663                }
3664                if ($alternate) {
3665                        print "<tr class=\"dark\">\n";
3666                } else {
3667                        print "<tr class=\"light\">\n";
3668                }
3669                $alternate ^= 1;
3670                if (defined $tag{'age'}) {
3671                        print "<td><i>$tag{'age'}</i></td>\n";
3672                } else {
3673                        print "<td></td>\n";
3674                }
3675                print "<td>" .
3676                      $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
3677                               -class => "list name"}, esc_html($tag{'name'})) .
3678                      "</td>\n" .
3679                      "<td>";
3680                if (defined $comment) {
3681                        print format_subject_html($comment, $comment_short,
3682                                                  href(action=>"tag", hash=>$tag{'id'}));
3683                }
3684                print "</td>\n" .
3685                      "<td class=\"selflink\">";
3686                if ($tag{'type'} eq "tag") {
3687                        print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
3688                } else {
3689                        print "&nbsp;";
3690                }
3691                print "</td>\n" .
3692                      "<td class=\"link\">" . " | " .
3693                      $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
3694                if ($tag{'reftype'} eq "commit") {
3695                        print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'fullname'})}, "shortlog") .
3696                              " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'fullname'})}, "log");
3697                } elsif ($tag{'reftype'} eq "blob") {
3698                        print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
3699                }
3700                print "</td>\n" .
3701                      "</tr>";
3702        }
3703        if (defined $extra) {
3704                print "<tr>\n" .
3705                      "<td colspan=\"5\">$extra</td>\n" .
3706                      "</tr>\n";
3707        }
3708        print "</table>\n";
3709}
3710
3711sub git_heads_body {
3712        # uses global variable $project
3713        my ($headlist, $head, $from, $to, $extra) = @_;
3714        $from = 0 unless defined $from;
3715        $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
3716
3717        print "<table class=\"heads\">\n";
3718        my $alternate = 1;
3719        for (my $i = $from; $i <= $to; $i++) {
3720                my $entry = $headlist->[$i];
3721                my %ref = %$entry;
3722                my $curr = $ref{'id'} eq $head;
3723                if ($alternate) {
3724                        print "<tr class=\"dark\">\n";
3725                } else {
3726                        print "<tr class=\"light\">\n";
3727                }
3728                $alternate ^= 1;
3729                print "<td><i>$ref{'age'}</i></td>\n" .
3730                      ($curr ? "<td class=\"current_head\">" : "<td>") .
3731                      $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'fullname'}),
3732                               -class => "list name"},esc_html($ref{'name'})) .
3733                      "</td>\n" .
3734                      "<td class=\"link\">" .
3735                      $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'fullname'})}, "shortlog") . " | " .
3736                      $cgi->a({-href => href(action=>"log", hash=>$ref{'fullname'})}, "log") . " | " .
3737                      $cgi->a({-href => href(action=>"tree", hash=>$ref{'fullname'}, hash_base=>$ref{'name'})}, "tree") .
3738                      "</td>\n" .
3739                      "</tr>";
3740        }
3741        if (defined $extra) {
3742                print "<tr>\n" .
3743                      "<td colspan=\"3\">$extra</td>\n" .
3744                      "</tr>\n";
3745        }
3746        print "</table>\n";
3747}
3748
3749sub git_search_grep_body {
3750        my ($commitlist, $from, $to, $extra) = @_;
3751        $from = 0 unless defined $from;
3752        $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3753
3754        print "<table class=\"commit_search\">\n";
3755        my $alternate = 1;
3756        for (my $i = $from; $i <= $to; $i++) {
3757                my %co = %{$commitlist->[$i]};
3758                if (!%co) {
3759                        next;
3760                }
3761                my $commit = $co{'id'};
3762                if ($alternate) {
3763                        print "<tr class=\"dark\">\n";
3764                } else {
3765                        print "<tr class=\"light\">\n";
3766                }
3767                $alternate ^= 1;
3768                my $author = chop_and_escape_str($co{'author_name'}, 15, 5);
3769                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3770                      "<td><i>" . $author . "</i></td>\n" .
3771                      "<td>" .
3772                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3773                               chop_and_escape_str($co{'title'}, 50) . "<br/>");
3774                my $comment = $co{'comment'};
3775                foreach my $line (@$comment) {
3776                        if ($line =~ m/^(.*)($search_regexp)(.*)$/i) {
3777                                my $lead = esc_html($1) || "";
3778                                $lead = chop_str($lead, 30, 10);
3779                                my $match = esc_html($2) || "";
3780                                my $trail = esc_html($3) || "";
3781                                $trail = chop_str($trail, 30, 10);
3782                                my $text = "$lead<span class=\"match\">$match</span>$trail";
3783                                print chop_str($text, 80, 5) . "<br/>\n";
3784                        }
3785                }
3786                print "</td>\n" .
3787                      "<td class=\"link\">" .
3788                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3789                      " | " .
3790                      $cgi->a({-href => href(action=>"commitdiff", hash=>$co{'id'})}, "commitdiff") .
3791                      " | " .
3792                      $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3793                print "</td>\n" .
3794                      "</tr>\n";
3795        }
3796        if (defined $extra) {
3797                print "<tr>\n" .
3798                      "<td colspan=\"3\">$extra</td>\n" .
3799                      "</tr>\n";
3800        }
3801        print "</table>\n";
3802}
3803
3804## ======================================================================
3805## ======================================================================
3806## actions
3807
3808sub git_project_list {
3809        my $order = $cgi->param('o');
3810        if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3811                die_error(undef, "Unknown order parameter");
3812        }
3813
3814        my @list = git_get_projects_list();
3815        if (!@list) {
3816                die_error(undef, "No projects found");
3817        }
3818
3819        git_header_html();
3820        if (-f $home_text) {
3821                print "<div class=\"index_include\">\n";
3822                open (my $fd, $home_text);
3823                print <$fd>;
3824                close $fd;
3825                print "</div>\n";
3826        }
3827        git_project_list_body(\@list, $order);
3828        git_footer_html();
3829}
3830
3831sub git_forks {
3832        my $order = $cgi->param('o');
3833        if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3834                die_error(undef, "Unknown order parameter");
3835        }
3836
3837        my @list = git_get_projects_list($project);
3838        if (!@list) {
3839                die_error(undef, "No forks found");
3840        }
3841
3842        git_header_html();
3843        git_print_page_nav('','');
3844        git_print_header_div('summary', "$project forks");
3845        git_project_list_body(\@list, $order);
3846        git_footer_html();
3847}
3848
3849sub git_project_index {
3850        my @projects = git_get_projects_list($project);
3851
3852        print $cgi->header(
3853                -type => 'text/plain',
3854                -charset => 'utf-8',
3855                -content_disposition => 'inline; filename="index.aux"');
3856
3857        foreach my $pr (@projects) {
3858                if (!exists $pr->{'owner'}) {
3859                        $pr->{'owner'} = git_get_project_owner("$pr->{'path'}");
3860                }
3861
3862                my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
3863                # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
3864                $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3865                $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3866                $path  =~ s/ /\+/g;
3867                $owner =~ s/ /\+/g;
3868
3869                print "$path $owner\n";
3870        }
3871}
3872
3873sub git_summary {
3874        my $descr = git_get_project_description($project) || "none";
3875        my %co = parse_commit("HEAD");
3876        my %cd = %co ? parse_date($co{'committer_epoch'}, $co{'committer_tz'}) : ();
3877        my $head = $co{'id'};
3878
3879        my $owner = git_get_project_owner($project);
3880
3881        my $refs = git_get_references();
3882        # These get_*_list functions return one more to allow us to see if
3883        # there are more ...
3884        my @taglist  = git_get_tags_list(16);
3885        my @headlist = git_get_heads_list(16);
3886        my @forklist;
3887        my ($check_forks) = gitweb_check_feature('forks');
3888
3889        if ($check_forks) {
3890                @forklist = git_get_projects_list($project);
3891        }
3892
3893        git_header_html();
3894        git_print_page_nav('summary','', $head);
3895
3896        print "<div class=\"title\">&nbsp;</div>\n";
3897        print "<table class=\"projects_list\">\n" .
3898              "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
3899              "<tr><td>owner</td><td>" . esc_html($owner) . "</td></tr>\n";
3900        if (defined $cd{'rfc2822'}) {
3901                print "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
3902        }
3903
3904        # use per project git URL list in $projectroot/$project/cloneurl
3905        # or make project git URL from git base URL and project name
3906        my $url_tag = "URL";
3907        my @url_list = git_get_project_url_list($project);
3908        @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
3909        foreach my $git_url (@url_list) {
3910                next unless $git_url;
3911                print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
3912                $url_tag = "";
3913        }
3914        print "</table>\n";
3915
3916        if (-s "$projectroot/$project/README.html") {
3917                if (open my $fd, "$projectroot/$project/README.html") {
3918                        print "<div class=\"title\">readme</div>\n" .
3919                              "<div class=\"readme\">\n";
3920                        print $_ while (<$fd>);
3921                        print "\n</div>\n"; # class="readme"
3922                        close $fd;
3923                }
3924        }
3925
3926        # we need to request one more than 16 (0..15) to check if
3927        # those 16 are all
3928        my @commitlist = $head ? parse_commits($head, 17) : ();
3929        if (@commitlist) {
3930                git_print_header_div('shortlog');
3931                git_shortlog_body(\@commitlist, 0, 15, $refs,
3932                                  $#commitlist <=  15 ? undef :
3933                                  $cgi->a({-href => href(action=>"shortlog")}, "..."));
3934        }
3935
3936        if (@taglist) {
3937                git_print_header_div('tags');
3938                git_tags_body(\@taglist, 0, 15,
3939                              $#taglist <=  15 ? undef :
3940                              $cgi->a({-href => href(action=>"tags")}, "..."));
3941        }
3942
3943        if (@headlist) {
3944                git_print_header_div('heads');
3945                git_heads_body(\@headlist, $head, 0, 15,
3946                               $#headlist <= 15 ? undef :
3947                               $cgi->a({-href => href(action=>"heads")}, "..."));
3948        }
3949
3950        if (@forklist) {
3951                git_print_header_div('forks');
3952                git_project_list_body(\@forklist, undef, 0, 15,
3953                                      $#forklist <= 15 ? undef :
3954                                      $cgi->a({-href => href(action=>"forks")}, "..."),
3955                                      'noheader');
3956        }
3957
3958        git_footer_html();
3959}
3960
3961sub git_tag {
3962        my $head = git_get_head_hash($project);
3963        git_header_html();
3964        git_print_page_nav('','', $head,undef,$head);
3965        my %tag = parse_tag($hash);
3966
3967        if (! %tag) {
3968                die_error(undef, "Unknown tag object");
3969        }
3970
3971        git_print_header_div('commit', esc_html($tag{'name'}), $hash);
3972        print "<div class=\"title_text\">\n" .
3973              "<table class=\"object_header\">\n" .
3974              "<tr>\n" .
3975              "<td>object</td>\n" .
3976              "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3977                               $tag{'object'}) . "</td>\n" .
3978              "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3979                                              $tag{'type'}) . "</td>\n" .
3980              "</tr>\n";
3981        if (defined($tag{'author'})) {
3982                my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
3983                print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
3984                print "<tr><td></td><td>" . $ad{'rfc2822'} .
3985                        sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
3986                        "</td></tr>\n";
3987        }
3988        print "</table>\n\n" .
3989              "</div>\n";
3990        print "<div class=\"page_body\">";
3991        my $comment = $tag{'comment'};
3992        foreach my $line (@$comment) {
3993                chomp $line;
3994                print esc_html($line, -nbsp=>1) . "<br/>\n";
3995        }
3996        print "</div>\n";
3997        git_footer_html();
3998}
3999
4000sub git_blame2 {
4001        my $fd;
4002        my $ftype;
4003
4004        my ($have_blame) = gitweb_check_feature('blame');
4005        if (!$have_blame) {
4006                die_error('403 Permission denied', "Permission denied");
4007        }
4008        die_error('404 Not Found', "File name not defined") if (!$file_name);
4009        $hash_base ||= git_get_head_hash($project);
4010        die_error(undef, "Couldn't find base commit") unless ($hash_base);
4011        my %co = parse_commit($hash_base)
4012                or die_error(undef, "Reading commit failed");
4013        if (!defined $hash) {
4014                $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
4015                        or die_error(undef, "Error looking up file");
4016        }
4017        $ftype = git_get_type($hash);
4018        if ($ftype !~ "blob") {
4019                die_error('400 Bad Request', "Object is not a blob");
4020        }
4021        open ($fd, "-|", git_cmd(), "blame", '-p', '--',
4022              $file_name, $hash_base)
4023                or die_error(undef, "Open git-blame failed");
4024        git_header_html();
4025        my $formats_nav =
4026                $cgi->a({-href => href(action=>"blob", -replay=>1)},
4027                        "blob") .
4028                " | " .
4029                $cgi->a({-href => href(action=>"history", -replay=>1)},
4030                        "history") .
4031                " | " .
4032                $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
4033                        "HEAD");
4034        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4035        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4036        git_print_page_path($file_name, $ftype, $hash_base);
4037        my @rev_color = (qw(light2 dark2));
4038        my $num_colors = scalar(@rev_color);
4039        my $current_color = 0;
4040        my $last_rev;
4041        print <<HTML;
4042<div class="page_body">
4043<table class="blame">
4044<tr><th>Commit</th><th>Line</th><th>Data</th></tr>
4045HTML
4046        my %metainfo = ();
4047        while (1) {
4048                $_ = <$fd>;
4049                last unless defined $_;
4050                my ($full_rev, $orig_lineno, $lineno, $group_size) =
4051                    /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
4052                if (!exists $metainfo{$full_rev}) {
4053                        $metainfo{$full_rev} = {};
4054                }
4055                my $meta = $metainfo{$full_rev};
4056                while (<$fd>) {
4057                        last if (s/^\t//);
4058                        if (/^(\S+) (.*)$/) {
4059                                $meta->{$1} = $2;
4060                        }
4061                }
4062                my $data = $_;
4063                chomp $data;
4064                my $rev = substr($full_rev, 0, 8);
4065                my $author = $meta->{'author'};
4066                my %date = parse_date($meta->{'author-time'},
4067                                      $meta->{'author-tz'});
4068                my $date = $date{'iso-tz'};
4069                if ($group_size) {
4070                        $current_color = ++$current_color % $num_colors;
4071                }
4072                print "<tr class=\"$rev_color[$current_color]\">\n";
4073                if ($group_size) {
4074                        print "<td class=\"sha1\"";
4075                        print " title=\"". esc_html($author) . ", $date\"";
4076                        print " rowspan=\"$group_size\"" if ($group_size > 1);
4077                        print ">";
4078                        print $cgi->a({-href => href(action=>"commit",
4079                                                     hash=>$full_rev,
4080                                                     file_name=>$file_name)},
4081                                      esc_html($rev));
4082                        print "</td>\n";
4083                }
4084                open (my $dd, "-|", git_cmd(), "rev-parse", "$full_rev^")
4085                        or die_error(undef, "Open git-rev-parse failed");
4086                my $parent_commit = <$dd>;
4087                close $dd;
4088                chomp($parent_commit);
4089                my $blamed = href(action => 'blame',
4090                                  file_name => $meta->{'filename'},
4091                                  hash_base => $parent_commit);
4092                print "<td class=\"linenr\">";
4093                print $cgi->a({ -href => "$blamed#l$orig_lineno",
4094                                -id => "l$lineno",
4095                                -class => "linenr" },
4096                              esc_html($lineno));
4097                print "</td>";
4098                print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
4099                print "</tr>\n";
4100        }
4101        print "</table>\n";
4102        print "</div>";
4103        close $fd
4104                or print "Reading blob failed\n";
4105        git_footer_html();
4106}
4107
4108sub git_blame {
4109        my $fd;
4110
4111        my ($have_blame) = gitweb_check_feature('blame');
4112        if (!$have_blame) {
4113                die_error('403 Permission denied', "Permission denied");
4114        }
4115        die_error('404 Not Found', "File name not defined") if (!$file_name);
4116        $hash_base ||= git_get_head_hash($project);
4117        die_error(undef, "Couldn't find base commit") unless ($hash_base);
4118        my %co = parse_commit($hash_base)
4119                or die_error(undef, "Reading commit failed");
4120        if (!defined $hash) {
4121                $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
4122                        or die_error(undef, "Error lookup file");
4123        }
4124        open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
4125                or die_error(undef, "Open git-annotate failed");
4126        git_header_html();
4127        my $formats_nav =
4128                $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
4129                        "blob") .
4130                " | " .
4131                $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
4132                        "history") .
4133                " | " .
4134                $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
4135                        "HEAD");
4136        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4137        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4138        git_print_page_path($file_name, 'blob', $hash_base);
4139        print "<div class=\"page_body\">\n";
4140        print <<HTML;
4141<table class="blame">
4142  <tr>
4143    <th>Commit</th>
4144    <th>Age</th>
4145    <th>Author</th>
4146    <th>Line</th>
4147    <th>Data</th>
4148  </tr>
4149HTML
4150        my @line_class = (qw(light dark));
4151        my $line_class_len = scalar (@line_class);
4152        my $line_class_num = $#line_class;
4153        while (my $line = <$fd>) {
4154                my $long_rev;
4155                my $short_rev;
4156                my $author;
4157                my $time;
4158                my $lineno;
4159                my $data;
4160                my $age;
4161                my $age_str;
4162                my $age_class;
4163
4164                chomp $line;
4165                $line_class_num = ($line_class_num + 1) % $line_class_len;
4166
4167                if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
4168                        $long_rev = $1;
4169                        $author   = $2;
4170                        $time     = $3;
4171                        $lineno   = $4;
4172                        $data     = $5;
4173                } else {
4174                        print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
4175                        next;
4176                }
4177                $short_rev  = substr ($long_rev, 0, 8);
4178                $age        = time () - $time;
4179                $age_str    = age_string ($age);
4180                $age_str    =~ s/ /&nbsp;/g;
4181                $age_class  = age_class($age);
4182                $author     = esc_html ($author);
4183                $author     =~ s/ /&nbsp;/g;
4184
4185                $data = untabify($data);
4186                $data = esc_html ($data);
4187
4188                print <<HTML;
4189  <tr class="$line_class[$line_class_num]">
4190    <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
4191    <td class="$age_class">$age_str</td>
4192    <td>$author</td>
4193    <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
4194    <td class="pre">$data</td>
4195  </tr>
4196HTML
4197        } # while (my $line = <$fd>)
4198        print "</table>\n\n";
4199        close $fd
4200                or print "Reading blob failed.\n";
4201        print "</div>";
4202        git_footer_html();
4203}
4204
4205sub git_tags {
4206        my $head = git_get_head_hash($project);
4207        git_header_html();
4208        git_print_page_nav('','', $head,undef,$head);
4209        git_print_header_div('summary', $project);
4210
4211        my @tagslist = git_get_tags_list();
4212        if (@tagslist) {
4213                git_tags_body(\@tagslist);
4214        }
4215        git_footer_html();
4216}
4217
4218sub git_heads {
4219        my $head = git_get_head_hash($project);
4220        git_header_html();
4221        git_print_page_nav('','', $head,undef,$head);
4222        git_print_header_div('summary', $project);
4223
4224        my @headslist = git_get_heads_list();
4225        if (@headslist) {
4226                git_heads_body(\@headslist, $head);
4227        }
4228        git_footer_html();
4229}
4230
4231sub git_blob_plain {
4232        my $expires;
4233
4234        if (!defined $hash) {
4235                if (defined $file_name) {
4236                        my $base = $hash_base || git_get_head_hash($project);
4237                        $hash = git_get_hash_by_path($base, $file_name, "blob")
4238                                or die_error(undef, "Error lookup file");
4239                } else {
4240                        die_error(undef, "No file name defined");
4241                }
4242        } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4243                # blobs defined by non-textual hash id's can be cached
4244                $expires = "+1d";
4245        }
4246
4247        my $type = shift;
4248        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
4249                or die_error(undef, "Couldn't cat $file_name, $hash");
4250
4251        $type ||= blob_mimetype($fd, $file_name);
4252
4253        # save as filename, even when no $file_name is given
4254        my $save_as = "$hash";
4255        if (defined $file_name) {
4256                $save_as = $file_name;
4257        } elsif ($type =~ m/^text\//) {
4258                $save_as .= '.txt';
4259        }
4260
4261        print $cgi->header(
4262                -type => "$type",
4263                -expires=>$expires,
4264                -content_disposition => 'inline; filename="' . "$save_as" . '"');
4265        undef $/;
4266        binmode STDOUT, ':raw';
4267        print <$fd>;
4268        binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
4269        $/ = "\n";
4270        close $fd;
4271}
4272
4273sub git_blob {
4274        my $expires;
4275
4276        if (!defined $hash) {
4277                if (defined $file_name) {
4278                        my $base = $hash_base || git_get_head_hash($project);
4279                        $hash = git_get_hash_by_path($base, $file_name, "blob")
4280                                or die_error(undef, "Error lookup file");
4281                } else {
4282                        die_error(undef, "No file name defined");
4283                }
4284        } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4285                # blobs defined by non-textual hash id's can be cached
4286                $expires = "+1d";
4287        }
4288
4289        my ($have_blame) = gitweb_check_feature('blame');
4290        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
4291                or die_error(undef, "Couldn't cat $file_name, $hash");
4292        my $mimetype = blob_mimetype($fd, $file_name);
4293        if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)! && -B $fd) {
4294                close $fd;
4295                return git_blob_plain($mimetype);
4296        }
4297        # we can have blame only for text/* mimetype
4298        $have_blame &&= ($mimetype =~ m!^text/!);
4299
4300        git_header_html(undef, $expires);
4301        my $formats_nav = '';
4302        if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4303                if (defined $file_name) {
4304                        if ($have_blame) {
4305                                $formats_nav .=
4306                                        $cgi->a({-href => href(action=>"blame", -replay=>1)},
4307                                                "blame") .
4308                                        " | ";
4309                        }
4310                        $formats_nav .=
4311                                $cgi->a({-href => href(action=>"history", -replay=>1)},
4312                                        "history") .
4313                                " | " .
4314                                $cgi->a({-href => href(action=>"blob_plain", -replay=>1)},
4315                                        "raw") .
4316                                " | " .
4317                                $cgi->a({-href => href(action=>"blob",
4318                                                       hash_base=>"HEAD", file_name=>$file_name)},
4319                                        "HEAD");
4320                } else {
4321                        $formats_nav .=
4322                                $cgi->a({-href => href(action=>"blob_plain", -replay=>1)},
4323                                        "raw");
4324                }
4325                git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4326                git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4327        } else {
4328                print "<div class=\"page_nav\">\n" .
4329                      "<br/><br/></div>\n" .
4330                      "<div class=\"title\">$hash</div>\n";
4331        }
4332        git_print_page_path($file_name, "blob", $hash_base);
4333        print "<div class=\"page_body\">\n";
4334        if ($mimetype =~ m!^image/!) {
4335                print qq!<img type="$mimetype"!;
4336                if ($file_name) {
4337                        print qq! alt="$file_name" title="$file_name"!;
4338                }
4339                print qq! src="! .
4340                      href(action=>"blob_plain", hash=>$hash,
4341                           hash_base=>$hash_base, file_name=>$file_name) .
4342                      qq!" />\n!;
4343        } else {
4344                my $nr;
4345                while (my $line = <$fd>) {
4346                        chomp $line;
4347                        $nr++;
4348                        $line = untabify($line);
4349                        printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
4350                               $nr, $nr, $nr, esc_html($line, -nbsp=>1);
4351                }
4352        }
4353        close $fd
4354                or print "Reading blob failed.\n";
4355        print "</div>";
4356        git_footer_html();
4357}
4358
4359sub git_tree {
4360        if (!defined $hash_base) {
4361                $hash_base = "HEAD";
4362        }
4363        if (!defined $hash) {
4364                if (defined $file_name) {
4365                        $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
4366                } else {
4367                        $hash = $hash_base;
4368                }
4369        }
4370        $/ = "\0";
4371        open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
4372                or die_error(undef, "Open git-ls-tree failed");
4373        my @entries = map { chomp; $_ } <$fd>;
4374        close $fd or die_error(undef, "Reading tree failed");
4375        $/ = "\n";
4376
4377        my $refs = git_get_references();
4378        my $ref = format_ref_marker($refs, $hash_base);
4379        git_header_html();
4380        my $basedir = '';
4381        my ($have_blame) = gitweb_check_feature('blame');
4382        if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4383                my @views_nav = ();
4384                if (defined $file_name) {
4385                        push @views_nav,
4386                                $cgi->a({-href => href(action=>"history", -replay=>1)},
4387                                        "history"),
4388                                $cgi->a({-href => href(action=>"tree",
4389                                                       hash_base=>"HEAD", file_name=>$file_name)},
4390                                        "HEAD"),
4391                }
4392                my $snapshot_links = format_snapshot_links($hash);
4393                if (defined $snapshot_links) {
4394                        # FIXME: Should be available when we have no hash base as well.
4395                        push @views_nav, $snapshot_links;
4396                }
4397                git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
4398                git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
4399        } else {
4400                undef $hash_base;
4401                print "<div class=\"page_nav\">\n";
4402                print "<br/><br/></div>\n";
4403                print "<div class=\"title\">$hash</div>\n";
4404        }
4405        if (defined $file_name) {
4406                $basedir = $file_name;
4407                if ($basedir ne '' && substr($basedir, -1) ne '/') {
4408                        $basedir .= '/';
4409                }
4410        }
4411        git_print_page_path($file_name, 'tree', $hash_base);
4412        print "<div class=\"page_body\">\n";
4413        print "<table class=\"tree\">\n";
4414        my $alternate = 1;
4415        # '..' (top directory) link if possible
4416        if (defined $hash_base &&
4417            defined $file_name && $file_name =~ m![^/]+$!) {
4418                if ($alternate) {
4419                        print "<tr class=\"dark\">\n";
4420                } else {
4421                        print "<tr class=\"light\">\n";
4422                }
4423                $alternate ^= 1;
4424
4425                my $up = $file_name;
4426                $up =~ s!/?[^/]+$!!;
4427                undef $up unless $up;
4428                # based on git_print_tree_entry
4429                print '<td class="mode">' . mode_str('040000') . "</td>\n";
4430                print '<td class="list">';
4431                print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
4432                                             file_name=>$up)},
4433                              "..");
4434                print "</td>\n";
4435                print "<td class=\"link\"></td>\n";
4436
4437                print "</tr>\n";
4438        }
4439        foreach my $line (@entries) {
4440                my %t = parse_ls_tree_line($line, -z => 1);
4441
4442                if ($alternate) {
4443                        print "<tr class=\"dark\">\n";
4444                } else {
4445                        print "<tr class=\"light\">\n";
4446                }
4447                $alternate ^= 1;
4448
4449                git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
4450
4451                print "</tr>\n";
4452        }
4453        print "</table>\n" .
4454              "</div>";
4455        git_footer_html();
4456}
4457
4458sub git_snapshot {
4459        my @supported_fmts = gitweb_check_feature('snapshot');
4460        @supported_fmts = filter_snapshot_fmts(@supported_fmts);
4461
4462        my $format = $cgi->param('sf');
4463        if (!@supported_fmts) {
4464                die_error('403 Permission denied', "Permission denied");
4465        }
4466        # default to first supported snapshot format
4467        $format ||= $supported_fmts[0];
4468        if ($format !~ m/^[a-z0-9]+$/) {
4469                die_error(undef, "Invalid snapshot format parameter");
4470        } elsif (!exists($known_snapshot_formats{$format})) {
4471                die_error(undef, "Unknown snapshot format");
4472        } elsif (!grep($_ eq $format, @supported_fmts)) {
4473                die_error(undef, "Unsupported snapshot format");
4474        }
4475
4476        if (!defined $hash) {
4477                $hash = git_get_head_hash($project);
4478        }
4479
4480        my $git_command = git_cmd_str();
4481        my $name = $project;
4482        $name =~ s,([^/])/*\.git$,$1,;
4483        $name = basename($name);
4484        my $filename = to_utf8($name);
4485        $name =~ s/\047/\047\\\047\047/g;
4486        my $cmd;
4487        $filename .= "-$hash$known_snapshot_formats{$format}{'suffix'}";
4488        $cmd = "$git_command archive " .
4489                "--format=$known_snapshot_formats{$format}{'format'} " .
4490                "--prefix=\'$name\'/ $hash";
4491        if (exists $known_snapshot_formats{$format}{'compressor'}) {
4492                $cmd .= ' | ' . join ' ', @{$known_snapshot_formats{$format}{'compressor'}};
4493        }
4494
4495        print $cgi->header(
4496                -type => $known_snapshot_formats{$format}{'type'},
4497                -content_disposition => 'inline; filename="' . "$filename" . '"',
4498                -status => '200 OK');
4499
4500        open my $fd, "-|", $cmd
4501                or die_error(undef, "Execute git-archive failed");
4502        binmode STDOUT, ':raw';
4503        print <$fd>;
4504        binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
4505        close $fd;
4506}
4507
4508sub git_log {
4509        my $head = git_get_head_hash($project);
4510        if (!defined $hash) {
4511                $hash = $head;
4512        }
4513        if (!defined $page) {
4514                $page = 0;
4515        }
4516        my $refs = git_get_references();
4517
4518        my @commitlist = parse_commits($hash, 101, (100 * $page));
4519
4520        my $paging_nav = format_paging_nav('log', $hash, $head, $page, (100 * ($page+1)));
4521
4522        git_header_html();
4523        git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
4524
4525        if (!@commitlist) {
4526                my %co = parse_commit($hash);
4527
4528                git_print_header_div('summary', $project);
4529                print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
4530        }
4531        my $to = ($#commitlist >= 99) ? (99) : ($#commitlist);
4532        for (my $i = 0; $i <= $to; $i++) {
4533                my %co = %{$commitlist[$i]};
4534                next if !%co;
4535                my $commit = $co{'id'};
4536                my $ref = format_ref_marker($refs, $commit);
4537                my %ad = parse_date($co{'author_epoch'});
4538                git_print_header_div('commit',
4539                               "<span class=\"age\">$co{'age_string'}</span>" .
4540                               esc_html($co{'title'}) . $ref,
4541                               $commit);
4542                print "<div class=\"title_text\">\n" .
4543                      "<div class=\"log_link\">\n" .
4544                      $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
4545                      " | " .
4546                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
4547                      " | " .
4548                      $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
4549                      "<br/>\n" .
4550                      "</div>\n" .
4551                      "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
4552                      "</div>\n";
4553
4554                print "<div class=\"log_body\">\n";
4555                git_print_log($co{'comment'}, -final_empty_line=> 1);
4556                print "</div>\n";
4557        }
4558        if ($#commitlist >= 100) {
4559                print "<div class=\"page_nav\">\n";
4560                print $cgi->a({-href => href(-replay=>1, page=>$page+1),
4561                               -accesskey => "n", -title => "Alt-n"}, "next");
4562                print "</div>\n";
4563        }
4564        git_footer_html();
4565}
4566
4567sub git_commit {
4568        $hash ||= $hash_base || "HEAD";
4569        my %co = parse_commit($hash);
4570        if (!%co) {
4571                die_error(undef, "Unknown commit object");
4572        }
4573        my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4574        my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
4575
4576        my $parent  = $co{'parent'};
4577        my $parents = $co{'parents'}; # listref
4578
4579        # we need to prepare $formats_nav before any parameter munging
4580        my $formats_nav;
4581        if (!defined $parent) {
4582                # --root commitdiff
4583                $formats_nav .= '(initial)';
4584        } elsif (@$parents == 1) {
4585                # single parent commit
4586                $formats_nav .=
4587                        '(parent: ' .
4588                        $cgi->a({-href => href(action=>"commit",
4589                                               hash=>$parent)},
4590                                esc_html(substr($parent, 0, 7))) .
4591                        ')';
4592        } else {
4593                # merge commit
4594                $formats_nav .=
4595                        '(merge: ' .
4596                        join(' ', map {
4597                                $cgi->a({-href => href(action=>"commit",
4598                                                       hash=>$_)},
4599                                        esc_html(substr($_, 0, 7)));
4600                        } @$parents ) .
4601                        ')';
4602        }
4603
4604        if (!defined $parent) {
4605                $parent = "--root";
4606        }
4607        my @difftree;
4608        open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
4609                @diff_opts,
4610                (@$parents <= 1 ? $parent : '-c'),
4611                $hash, "--"
4612                or die_error(undef, "Open git-diff-tree failed");
4613        @difftree = map { chomp; $_ } <$fd>;
4614        close $fd or die_error(undef, "Reading git-diff-tree failed");
4615
4616        # non-textual hash id's can be cached
4617        my $expires;
4618        if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4619                $expires = "+1d";
4620        }
4621        my $refs = git_get_references();
4622        my $ref = format_ref_marker($refs, $co{'id'});
4623
4624        git_header_html(undef, $expires);
4625        git_print_page_nav('commit', '',
4626                           $hash, $co{'tree'}, $hash,
4627                           $formats_nav);
4628
4629        if (defined $co{'parent'}) {
4630                git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
4631        } else {
4632                git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
4633        }
4634        print "<div class=\"title_text\">\n" .
4635              "<table class=\"object_header\">\n";
4636        print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
4637              "<tr>" .
4638              "<td></td><td> $ad{'rfc2822'}";
4639        if ($ad{'hour_local'} < 6) {
4640                printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
4641                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4642        } else {
4643                printf(" (%02d:%02d %s)",
4644                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4645        }
4646        print "</td>" .
4647              "</tr>\n";
4648        print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
4649        print "<tr><td></td><td> $cd{'rfc2822'}" .
4650              sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
4651              "</td></tr>\n";
4652        print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
4653        print "<tr>" .
4654              "<td>tree</td>" .
4655              "<td class=\"sha1\">" .
4656              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
4657                       class => "list"}, $co{'tree'}) .
4658              "</td>" .
4659              "<td class=\"link\">" .
4660              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
4661                      "tree");
4662        my $snapshot_links = format_snapshot_links($hash);
4663        if (defined $snapshot_links) {
4664                print " | " . $snapshot_links;
4665        }
4666        print "</td>" .
4667              "</tr>\n";
4668
4669        foreach my $par (@$parents) {
4670                print "<tr>" .
4671                      "<td>parent</td>" .
4672                      "<td class=\"sha1\">" .
4673                      $cgi->a({-href => href(action=>"commit", hash=>$par),
4674                               class => "list"}, $par) .
4675                      "</td>" .
4676                      "<td class=\"link\">" .
4677                      $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
4678                      " | " .
4679                      $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
4680                      "</td>" .
4681                      "</tr>\n";
4682        }
4683        print "</table>".
4684              "</div>\n";
4685
4686        print "<div class=\"page_body\">\n";
4687        git_print_log($co{'comment'});
4688        print "</div>\n";
4689
4690        git_difftree_body(\@difftree, $hash, @$parents);
4691
4692        git_footer_html();
4693}
4694
4695sub git_object {
4696        # object is defined by:
4697        # - hash or hash_base alone
4698        # - hash_base and file_name
4699        my $type;
4700
4701        # - hash or hash_base alone
4702        if ($hash || ($hash_base && !defined $file_name)) {
4703                my $object_id = $hash || $hash_base;
4704
4705                my $git_command = git_cmd_str();
4706                open my $fd, "-|", "$git_command cat-file -t $object_id 2>/dev/null"
4707                        or die_error('404 Not Found', "Object does not exist");
4708                $type = <$fd>;
4709                chomp $type;
4710                close $fd
4711                        or die_error('404 Not Found', "Object does not exist");
4712
4713        # - hash_base and file_name
4714        } elsif ($hash_base && defined $file_name) {
4715                $file_name =~ s,/+$,,;
4716
4717                system(git_cmd(), "cat-file", '-e', $hash_base) == 0
4718                        or die_error('404 Not Found', "Base object does not exist");
4719
4720                # here errors should not hapen
4721                open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
4722                        or die_error(undef, "Open git-ls-tree failed");
4723                my $line = <$fd>;
4724                close $fd;
4725
4726                #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
4727                unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
4728                        die_error('404 Not Found', "File or directory for given base does not exist");
4729                }
4730                $type = $2;
4731                $hash = $3;
4732        } else {
4733                die_error('404 Not Found', "Not enough information to find object");
4734        }
4735
4736        print $cgi->redirect(-uri => href(action=>$type, -full=>1,
4737                                          hash=>$hash, hash_base=>$hash_base,
4738                                          file_name=>$file_name),
4739                             -status => '302 Found');
4740}
4741
4742sub git_blobdiff {
4743        my $format = shift || 'html';
4744
4745        my $fd;
4746        my @difftree;
4747        my %diffinfo;
4748        my $expires;
4749
4750        # preparing $fd and %diffinfo for git_patchset_body
4751        # new style URI
4752        if (defined $hash_base && defined $hash_parent_base) {
4753                if (defined $file_name) {
4754                        # read raw output
4755                        open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4756                                $hash_parent_base, $hash_base,
4757                                "--", (defined $file_parent ? $file_parent : ()), $file_name
4758                                or die_error(undef, "Open git-diff-tree failed");
4759                        @difftree = map { chomp; $_ } <$fd>;
4760                        close $fd
4761                                or die_error(undef, "Reading git-diff-tree failed");
4762                        @difftree
4763                                or die_error('404 Not Found', "Blob diff not found");
4764
4765                } elsif (defined $hash &&
4766                         $hash =~ /[0-9a-fA-F]{40}/) {
4767                        # try to find filename from $hash
4768
4769                        # read filtered raw output
4770                        open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4771                                $hash_parent_base, $hash_base, "--"
4772                                or die_error(undef, "Open git-diff-tree failed");
4773                        @difftree =
4774                                # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
4775                                # $hash == to_id
4776                                grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
4777                                map { chomp; $_ } <$fd>;
4778                        close $fd
4779                                or die_error(undef, "Reading git-diff-tree failed");
4780                        @difftree
4781                                or die_error('404 Not Found', "Blob diff not found");
4782
4783                } else {
4784                        die_error('404 Not Found', "Missing one of the blob diff parameters");
4785                }
4786
4787                if (@difftree > 1) {
4788                        die_error('404 Not Found', "Ambiguous blob diff specification");
4789                }
4790
4791                %diffinfo = parse_difftree_raw_line($difftree[0]);
4792                $file_parent ||= $diffinfo{'from_file'} || $file_name;
4793                $file_name   ||= $diffinfo{'to_file'};
4794
4795                $hash_parent ||= $diffinfo{'from_id'};
4796                $hash        ||= $diffinfo{'to_id'};
4797
4798                # non-textual hash id's can be cached
4799                if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
4800                    $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
4801                        $expires = '+1d';
4802                }
4803
4804                # open patch output
4805                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4806                        '-p', ($format eq 'html' ? "--full-index" : ()),
4807                        $hash_parent_base, $hash_base,
4808                        "--", (defined $file_parent ? $file_parent : ()), $file_name
4809                        or die_error(undef, "Open git-diff-tree failed");
4810        }
4811
4812        # old/legacy style URI
4813        if (!%diffinfo && # if new style URI failed
4814            defined $hash && defined $hash_parent) {
4815                # fake git-diff-tree raw output
4816                $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
4817                $diffinfo{'from_id'} = $hash_parent;
4818                $diffinfo{'to_id'}   = $hash;
4819                if (defined $file_name) {
4820                        if (defined $file_parent) {
4821                                $diffinfo{'status'} = '2';
4822                                $diffinfo{'from_file'} = $file_parent;
4823                                $diffinfo{'to_file'}   = $file_name;
4824                        } else { # assume not renamed
4825                                $diffinfo{'status'} = '1';
4826                                $diffinfo{'from_file'} = $file_name;
4827                                $diffinfo{'to_file'}   = $file_name;
4828                        }
4829                } else { # no filename given
4830                        $diffinfo{'status'} = '2';
4831                        $diffinfo{'from_file'} = $hash_parent;
4832                        $diffinfo{'to_file'}   = $hash;
4833                }
4834
4835                # non-textual hash id's can be cached
4836                if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
4837                    $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4838                        $expires = '+1d';
4839                }
4840
4841                # open patch output
4842                open $fd, "-|", git_cmd(), "diff", @diff_opts,
4843                        '-p', ($format eq 'html' ? "--full-index" : ()),
4844                        $hash_parent, $hash, "--"
4845                        or die_error(undef, "Open git-diff failed");
4846        } else  {
4847                die_error('404 Not Found', "Missing one of the blob diff parameters")
4848                        unless %diffinfo;
4849        }
4850
4851        # header
4852        if ($format eq 'html') {
4853                my $formats_nav =
4854                        $cgi->a({-href => href(action=>"blobdiff_plain", -replay=>1)},
4855                                "raw");
4856                git_header_html(undef, $expires);
4857                if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4858                        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4859                        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4860                } else {
4861                        print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
4862                        print "<div class=\"title\">$hash vs $hash_parent</div>\n";
4863                }
4864                if (defined $file_name) {
4865                        git_print_page_path($file_name, "blob", $hash_base);
4866                } else {
4867                        print "<div class=\"page_path\"></div>\n";
4868                }
4869
4870        } elsif ($format eq 'plain') {
4871                print $cgi->header(
4872                        -type => 'text/plain',
4873                        -charset => 'utf-8',
4874                        -expires => $expires,
4875                        -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
4876
4877                print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4878
4879        } else {
4880                die_error(undef, "Unknown blobdiff format");
4881        }
4882
4883        # patch
4884        if ($format eq 'html') {
4885                print "<div class=\"page_body\">\n";
4886
4887                git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
4888                close $fd;
4889
4890                print "</div>\n"; # class="page_body"
4891                git_footer_html();
4892
4893        } else {
4894                while (my $line = <$fd>) {
4895                        $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
4896                        $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
4897
4898                        print $line;
4899
4900                        last if $line =~ m!^\+\+\+!;
4901                }
4902                local $/ = undef;
4903                print <$fd>;
4904                close $fd;
4905        }
4906}
4907
4908sub git_blobdiff_plain {
4909        git_blobdiff('plain');
4910}
4911
4912sub git_commitdiff {
4913        my $format = shift || 'html';
4914        $hash ||= $hash_base || "HEAD";
4915        my %co = parse_commit($hash);
4916        if (!%co) {
4917                die_error(undef, "Unknown commit object");
4918        }
4919
4920        # choose format for commitdiff for merge
4921        if (! defined $hash_parent && @{$co{'parents'}} > 1) {
4922                $hash_parent = '--cc';
4923        }
4924        # we need to prepare $formats_nav before almost any parameter munging
4925        my $formats_nav;
4926        if ($format eq 'html') {
4927                $formats_nav =
4928                        $cgi->a({-href => href(action=>"commitdiff_plain", -replay=>1)},
4929                                "raw");
4930
4931                if (defined $hash_parent &&
4932                    $hash_parent ne '-c' && $hash_parent ne '--cc') {
4933                        # commitdiff with two commits given
4934                        my $hash_parent_short = $hash_parent;
4935                        if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4936                                $hash_parent_short = substr($hash_parent, 0, 7);
4937                        }
4938                        $formats_nav .=
4939                                ' (from';
4940                        for (my $i = 0; $i < @{$co{'parents'}}; $i++) {
4941                                if ($co{'parents'}[$i] eq $hash_parent) {
4942                                        $formats_nav .= ' parent ' . ($i+1);
4943                                        last;
4944                                }
4945                        }
4946                        $formats_nav .= ': ' .
4947                                $cgi->a({-href => href(action=>"commitdiff",
4948                                                       hash=>$hash_parent)},
4949                                        esc_html($hash_parent_short)) .
4950                                ')';
4951                } elsif (!$co{'parent'}) {
4952                        # --root commitdiff
4953                        $formats_nav .= ' (initial)';
4954                } elsif (scalar @{$co{'parents'}} == 1) {
4955                        # single parent commit
4956                        $formats_nav .=
4957                                ' (parent: ' .
4958                                $cgi->a({-href => href(action=>"commitdiff",
4959                                                       hash=>$co{'parent'})},
4960                                        esc_html(substr($co{'parent'}, 0, 7))) .
4961                                ')';
4962                } else {
4963                        # merge commit
4964                        if ($hash_parent eq '--cc') {
4965                                $formats_nav .= ' | ' .
4966                                        $cgi->a({-href => href(action=>"commitdiff",
4967                                                               hash=>$hash, hash_parent=>'-c')},
4968                                                'combined');
4969                        } else { # $hash_parent eq '-c'
4970                                $formats_nav .= ' | ' .
4971                                        $cgi->a({-href => href(action=>"commitdiff",
4972                                                               hash=>$hash, hash_parent=>'--cc')},
4973                                                'compact');
4974                        }
4975                        $formats_nav .=
4976                                ' (merge: ' .
4977                                join(' ', map {
4978                                        $cgi->a({-href => href(action=>"commitdiff",
4979                                                               hash=>$_)},
4980                                                esc_html(substr($_, 0, 7)));
4981                                } @{$co{'parents'}} ) .
4982                                ')';
4983                }
4984        }
4985
4986        my $hash_parent_param = $hash_parent;
4987        if (!defined $hash_parent_param) {
4988                # --cc for multiple parents, --root for parentless
4989                $hash_parent_param =
4990                        @{$co{'parents'}} > 1 ? '--cc' : $co{'parent'} || '--root';
4991        }
4992
4993        # read commitdiff
4994        my $fd;
4995        my @difftree;
4996        if ($format eq 'html') {
4997                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4998                        "--no-commit-id", "--patch-with-raw", "--full-index",
4999                        $hash_parent_param, $hash, "--"
5000                        or die_error(undef, "Open git-diff-tree failed");
5001
5002                while (my $line = <$fd>) {
5003                        chomp $line;
5004                        # empty line ends raw part of diff-tree output
5005                        last unless $line;
5006                        push @difftree, scalar parse_difftree_raw_line($line);
5007                }
5008
5009        } elsif ($format eq 'plain') {
5010                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
5011                        '-p', $hash_parent_param, $hash, "--"
5012                        or die_error(undef, "Open git-diff-tree failed");
5013
5014        } else {
5015                die_error(undef, "Unknown commitdiff format");
5016        }
5017
5018        # non-textual hash id's can be cached
5019        my $expires;
5020        if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
5021                $expires = "+1d";
5022        }
5023
5024        # write commit message
5025        if ($format eq 'html') {
5026                my $refs = git_get_references();
5027                my $ref = format_ref_marker($refs, $co{'id'});
5028
5029                git_header_html(undef, $expires);
5030                git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
5031                git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
5032                git_print_authorship(\%co);
5033                print "<div class=\"page_body\">\n";
5034                if (@{$co{'comment'}} > 1) {
5035                        print "<div class=\"log\">\n";
5036                        git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
5037                        print "</div>\n"; # class="log"
5038                }
5039
5040        } elsif ($format eq 'plain') {
5041                my $refs = git_get_references("tags");
5042                my $tagname = git_get_rev_name_tags($hash);
5043                my $filename = basename($project) . "-$hash.patch";
5044
5045                print $cgi->header(
5046                        -type => 'text/plain',
5047                        -charset => 'utf-8',
5048                        -expires => $expires,
5049                        -content_disposition => 'inline; filename="' . "$filename" . '"');
5050                my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
5051                print <<TEXT;
5052From: $co{'author'}
5053Date: $ad{'rfc2822'} ($ad{'tz_local'})
5054Subject: $co{'title'}
5055TEXT
5056                print "X-Git-Tag: $tagname\n" if $tagname;
5057                print "X-Git-Url: " . $cgi->self_url() . "\n\n";
5058
5059                foreach my $line (@{$co{'comment'}}) {
5060                        print "$line\n";
5061                }
5062                print "---\n\n";
5063        }
5064
5065        # write patch
5066        if ($format eq 'html') {
5067                my $use_parents = !defined $hash_parent ||
5068                        $hash_parent eq '-c' || $hash_parent eq '--cc';
5069                git_difftree_body(\@difftree, $hash,
5070                                  $use_parents ? @{$co{'parents'}} : $hash_parent);
5071                print "<br/>\n";
5072
5073                git_patchset_body($fd, \@difftree, $hash,
5074                                  $use_parents ? @{$co{'parents'}} : $hash_parent);
5075                close $fd;
5076                print "</div>\n"; # class="page_body"
5077                git_footer_html();
5078
5079        } elsif ($format eq 'plain') {
5080                local $/ = undef;
5081                print <$fd>;
5082                close $fd
5083                        or print "Reading git-diff-tree failed\n";
5084        }
5085}
5086
5087sub git_commitdiff_plain {
5088        git_commitdiff('plain');
5089}
5090
5091sub git_history {
5092        if (!defined $hash_base) {
5093                $hash_base = git_get_head_hash($project);
5094        }
5095        if (!defined $page) {
5096                $page = 0;
5097        }
5098        my $ftype;
5099        my %co = parse_commit($hash_base);
5100        if (!%co) {
5101                die_error(undef, "Unknown commit object");
5102        }
5103
5104        my $refs = git_get_references();
5105        my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
5106
5107        if (!defined $hash && defined $file_name) {
5108                $hash = git_get_hash_by_path($hash_base, $file_name);
5109        }
5110        if (defined $hash) {
5111                $ftype = git_get_type($hash);
5112        }
5113
5114        my @commitlist = parse_commits($hash_base, 101, (100 * $page), "--full-history", $file_name);
5115
5116        my $paging_nav = '';
5117        if ($page > 0) {
5118                $paging_nav .=
5119                        $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
5120                                               file_name=>$file_name)},
5121                                "first");
5122                $paging_nav .= " &sdot; " .
5123                        $cgi->a({-href => href(-replay=>1, page=>$page-1),
5124                                 -accesskey => "p", -title => "Alt-p"}, "prev");
5125        } else {
5126                $paging_nav .= "first";
5127                $paging_nav .= " &sdot; prev";
5128        }
5129        my $next_link = '';
5130        if ($#commitlist >= 100) {
5131                $next_link =
5132                        $cgi->a({-href => href(-replay=>1, page=>$page+1),
5133                                 -accesskey => "n", -title => "Alt-n"}, "next");
5134                $paging_nav .= " &sdot; $next_link";
5135        } else {
5136                $paging_nav .= " &sdot; next";
5137        }
5138
5139        git_header_html();
5140        git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
5141        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
5142        git_print_page_path($file_name, $ftype, $hash_base);
5143
5144        git_history_body(\@commitlist, 0, 99,
5145                         $refs, $hash_base, $ftype, $next_link);
5146
5147        git_footer_html();
5148}
5149
5150sub git_search {
5151        my ($have_search) = gitweb_check_feature('search');
5152        if (!$have_search) {
5153                die_error('403 Permission denied', "Permission denied");
5154        }
5155        if (!defined $searchtext) {
5156                die_error(undef, "Text field empty");
5157        }
5158        if (!defined $hash) {
5159                $hash = git_get_head_hash($project);
5160        }
5161        my %co = parse_commit($hash);
5162        if (!%co) {
5163                die_error(undef, "Unknown commit object");
5164        }
5165        if (!defined $page) {
5166                $page = 0;
5167        }
5168
5169        $searchtype ||= 'commit';
5170        if ($searchtype eq 'pickaxe') {
5171                # pickaxe may take all resources of your box and run for several minutes
5172                # with every query - so decide by yourself how public you make this feature
5173                my ($have_pickaxe) = gitweb_check_feature('pickaxe');
5174                if (!$have_pickaxe) {
5175                        die_error('403 Permission denied', "Permission denied");
5176                }
5177        }
5178        if ($searchtype eq 'grep') {
5179                my ($have_grep) = gitweb_check_feature('grep');
5180                if (!$have_grep) {
5181                        die_error('403 Permission denied', "Permission denied");
5182                }
5183        }
5184
5185        git_header_html();
5186
5187        if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
5188                my $greptype;
5189                if ($searchtype eq 'commit') {
5190                        $greptype = "--grep=";
5191                } elsif ($searchtype eq 'author') {
5192                        $greptype = "--author=";
5193                } elsif ($searchtype eq 'committer') {
5194                        $greptype = "--committer=";
5195                }
5196                $greptype .= $search_regexp;
5197                my @commitlist = parse_commits($hash, 101, (100 * $page), $greptype);
5198
5199                my $paging_nav = '';
5200                if ($page > 0) {
5201                        $paging_nav .=
5202                                $cgi->a({-href => href(action=>"search", hash=>$hash,
5203                                                       searchtext=>$searchtext, searchtype=>$searchtype)},
5204                                        "first");
5205                        $paging_nav .= " &sdot; " .
5206                                $cgi->a({-href => href(-replay=>1, page=>$page-1),
5207                                         -accesskey => "p", -title => "Alt-p"}, "prev");
5208                } else {
5209                        $paging_nav .= "first";
5210                        $paging_nav .= " &sdot; prev";
5211                }
5212                my $next_link = '';
5213                if ($#commitlist >= 100) {
5214                        $next_link =
5215                                $cgi->a({-href => href(-replay=>1, page=>$page+1),
5216                                         -accesskey => "n", -title => "Alt-n"}, "next");
5217                        $paging_nav .= " &sdot; $next_link";
5218                } else {
5219                        $paging_nav .= " &sdot; next";
5220                }
5221
5222                if ($#commitlist >= 100) {
5223                }
5224
5225                git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
5226                git_print_header_div('commit', esc_html($co{'title'}), $hash);
5227                git_search_grep_body(\@commitlist, 0, 99, $next_link);
5228        }
5229
5230        if ($searchtype eq 'pickaxe') {
5231                git_print_page_nav('','', $hash,$co{'tree'},$hash);
5232                git_print_header_div('commit', esc_html($co{'title'}), $hash);
5233
5234                print "<table class=\"pickaxe search\">\n";
5235                my $alternate = 1;
5236                $/ = "\n";
5237                my $git_command = git_cmd_str();
5238                my $searchqtext = $searchtext;
5239                $searchqtext =~ s/'/'\\''/;
5240                open my $fd, "-|", "$git_command rev-list $hash | " .
5241                        "$git_command diff-tree -r --stdin -S\'$searchqtext\'";
5242                undef %co;
5243                my @files;
5244                while (my $line = <$fd>) {
5245                        if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
5246                                my %set;
5247                                $set{'file'} = $6;
5248                                $set{'from_id'} = $3;
5249                                $set{'to_id'} = $4;
5250                                $set{'id'} = $set{'to_id'};
5251                                if ($set{'id'} =~ m/0{40}/) {
5252                                        $set{'id'} = $set{'from_id'};
5253                                }
5254                                if ($set{'id'} =~ m/0{40}/) {
5255                                        next;
5256                                }
5257                                push @files, \%set;
5258                        } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
5259                                if (%co) {
5260                                        if ($alternate) {
5261                                                print "<tr class=\"dark\">\n";
5262                                        } else {
5263                                                print "<tr class=\"light\">\n";
5264                                        }
5265                                        $alternate ^= 1;
5266                                        my $author = chop_and_escape_str($co{'author_name'}, 15, 5);
5267                                        print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
5268                                              "<td><i>" . $author . "</i></td>\n" .
5269                                              "<td>" .
5270                                              $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
5271                                                      -class => "list subject"},
5272                                                      chop_and_escape_str($co{'title'}, 50) . "<br/>");
5273                                        while (my $setref = shift @files) {
5274                                                my %set = %$setref;
5275                                                print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
5276                                                                             hash=>$set{'id'}, file_name=>$set{'file'}),
5277                                                              -class => "list"},
5278                                                              "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
5279                                                      "<br/>\n";
5280                                        }
5281                                        print "</td>\n" .
5282                                              "<td class=\"link\">" .
5283                                              $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
5284                                              " | " .
5285                                              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
5286                                        print "</td>\n" .
5287                                              "</tr>\n";
5288                                }
5289                                %co = parse_commit($1);
5290                        }
5291                }
5292                close $fd;
5293
5294                print "</table>\n";
5295        }
5296
5297        if ($searchtype eq 'grep') {
5298                git_print_page_nav('','', $hash,$co{'tree'},$hash);
5299                git_print_header_div('commit', esc_html($co{'title'}), $hash);
5300
5301                print "<table class=\"grep_search\">\n";
5302                my $alternate = 1;
5303                my $matches = 0;
5304                $/ = "\n";
5305                open my $fd, "-|", git_cmd(), 'grep', '-n', '-i', '-E', $searchtext, $co{'tree'};
5306                my $lastfile = '';
5307                while (my $line = <$fd>) {
5308                        chomp $line;
5309                        my ($file, $lno, $ltext, $binary);
5310                        last if ($matches++ > 1000);
5311                        if ($line =~ /^Binary file (.+) matches$/) {
5312                                $file = $1;
5313                                $binary = 1;
5314                        } else {
5315                                (undef, $file, $lno, $ltext) = split(/:/, $line, 4);
5316                        }
5317                        if ($file ne $lastfile) {
5318                                $lastfile and print "</td></tr>\n";
5319                                if ($alternate++) {
5320                                        print "<tr class=\"dark\">\n";
5321                                } else {
5322                                        print "<tr class=\"light\">\n";
5323                                }
5324                                print "<td class=\"list\">".
5325                                        $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
5326                                                               file_name=>"$file"),
5327                                                -class => "list"}, esc_path($file));
5328                                print "</td><td>\n";
5329                                $lastfile = $file;
5330                        }
5331                        if ($binary) {
5332                                print "<div class=\"binary\">Binary file</div>\n";
5333                        } else {
5334                                $ltext = untabify($ltext);
5335                                if ($ltext =~ m/^(.*)($searchtext)(.*)$/i) {
5336                                        $ltext = esc_html($1, -nbsp=>1);
5337                                        $ltext .= '<span class="match">';
5338                                        $ltext .= esc_html($2, -nbsp=>1);
5339                                        $ltext .= '</span>';
5340                                        $ltext .= esc_html($3, -nbsp=>1);
5341                                } else {
5342                                        $ltext = esc_html($ltext, -nbsp=>1);
5343                                }
5344                                print "<div class=\"pre\">" .
5345                                        $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
5346                                                               file_name=>"$file").'#l'.$lno,
5347                                                -class => "linenr"}, sprintf('%4i', $lno))
5348                                        . ' ' .  $ltext . "</div>\n";
5349                        }
5350                }
5351                if ($lastfile) {
5352                        print "</td></tr>\n";
5353                        if ($matches > 1000) {
5354                                print "<div class=\"diff nodifferences\">Too many matches, listing trimmed</div>\n";
5355                        }
5356                } else {
5357                        print "<div class=\"diff nodifferences\">No matches found</div>\n";
5358                }
5359                close $fd;
5360
5361                print "</table>\n";
5362        }
5363        git_footer_html();
5364}
5365
5366sub git_search_help {
5367        git_header_html();
5368        git_print_page_nav('','', $hash,$hash,$hash);
5369        print <<EOT;
5370<dl>
5371<dt><b>commit</b></dt>
5372<dd>The commit messages and authorship information will be scanned for the given string.</dd>
5373EOT
5374        my ($have_grep) = gitweb_check_feature('grep');
5375        if ($have_grep) {
5376                print <<EOT;
5377<dt><b>grep</b></dt>
5378<dd>All files in the currently selected tree (HEAD unless you are explicitly browsing
5379    a different one) are searched for the given
5380<a href="http://en.wikipedia.org/wiki/Regular_expression">regular expression</a>
5381(POSIX extended) and the matches are listed. On large
5382trees, this search can take a while and put some strain on the server, so please use it with
5383some consideration.</dd>
5384EOT
5385        }
5386        print <<EOT;
5387<dt><b>author</b></dt>
5388<dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
5389<dt><b>committer</b></dt>
5390<dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
5391EOT
5392        my ($have_pickaxe) = gitweb_check_feature('pickaxe');
5393        if ($have_pickaxe) {
5394                print <<EOT;
5395<dt><b>pickaxe</b></dt>
5396<dd>All commits that caused the string to appear or disappear from any file (changes that
5397added, removed or "modified" the string) will be listed. This search can take a while and
5398takes a lot of strain on the server, so please use it wisely.</dd>
5399EOT
5400        }
5401        print "</dl>\n";
5402        git_footer_html();
5403}
5404
5405sub git_shortlog {
5406        my $head = git_get_head_hash($project);
5407        if (!defined $hash) {
5408                $hash = $head;
5409        }
5410        if (!defined $page) {
5411                $page = 0;
5412        }
5413        my $refs = git_get_references();
5414
5415        my @commitlist = parse_commits($hash, 101, (100 * $page));
5416
5417        my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, (100 * ($page+1)));
5418        my $next_link = '';
5419        if ($#commitlist >= 100) {
5420                $next_link =
5421                        $cgi->a({-href => href(-replay=>1, page=>$page+1),
5422                                 -accesskey => "n", -title => "Alt-n"}, "next");
5423        }
5424
5425        git_header_html();
5426        git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
5427        git_print_header_div('summary', $project);
5428
5429        git_shortlog_body(\@commitlist, 0, 99, $refs, $next_link);
5430
5431        git_footer_html();
5432}
5433
5434## ......................................................................
5435## feeds (RSS, Atom; OPML)
5436
5437sub git_feed {
5438        my $format = shift || 'atom';
5439        my ($have_blame) = gitweb_check_feature('blame');
5440
5441        # Atom: http://www.atomenabled.org/developers/syndication/
5442        # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
5443        if ($format ne 'rss' && $format ne 'atom') {
5444                die_error(undef, "Unknown web feed format");
5445        }
5446
5447        # log/feed of current (HEAD) branch, log of given branch, history of file/directory
5448        my $head = $hash || 'HEAD';
5449        my @commitlist = parse_commits($head, 150, 0, undef, $file_name);
5450
5451        my %latest_commit;
5452        my %latest_date;
5453        my $content_type = "application/$format+xml";
5454        if (defined $cgi->http('HTTP_ACCEPT') &&
5455                 $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
5456                # browser (feed reader) prefers text/xml
5457                $content_type = 'text/xml';
5458        }
5459        if (defined($commitlist[0])) {
5460                %latest_commit = %{$commitlist[0]};
5461                %latest_date   = parse_date($latest_commit{'author_epoch'});
5462                print $cgi->header(
5463                        -type => $content_type,
5464                        -charset => 'utf-8',
5465                        -last_modified => $latest_date{'rfc2822'});
5466        } else {
5467                print $cgi->header(
5468                        -type => $content_type,
5469                        -charset => 'utf-8');
5470        }
5471
5472        # Optimization: skip generating the body if client asks only
5473        # for Last-Modified date.
5474        return if ($cgi->request_method() eq 'HEAD');
5475
5476        # header variables
5477        my $title = "$site_name - $project/$action";
5478        my $feed_type = 'log';
5479        if (defined $hash) {
5480                $title .= " - '$hash'";
5481                $feed_type = 'branch log';
5482                if (defined $file_name) {
5483                        $title .= " :: $file_name";
5484                        $feed_type = 'history';
5485                }
5486        } elsif (defined $file_name) {
5487                $title .= " - $file_name";
5488                $feed_type = 'history';
5489        }
5490        $title .= " $feed_type";
5491        my $descr = git_get_project_description($project);
5492        if (defined $descr) {
5493                $descr = esc_html($descr);
5494        } else {
5495                $descr = "$project " .
5496                         ($format eq 'rss' ? 'RSS' : 'Atom') .
5497                         " feed";
5498        }
5499        my $owner = git_get_project_owner($project);
5500        $owner = esc_html($owner);
5501
5502        #header
5503        my $alt_url;
5504        if (defined $file_name) {
5505                $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
5506        } elsif (defined $hash) {
5507                $alt_url = href(-full=>1, action=>"log", hash=>$hash);
5508        } else {
5509                $alt_url = href(-full=>1, action=>"summary");
5510        }
5511        print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
5512        if ($format eq 'rss') {
5513                print <<XML;
5514<rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
5515<channel>
5516XML
5517                print "<title>$title</title>\n" .
5518                      "<link>$alt_url</link>\n" .
5519                      "<description>$descr</description>\n" .
5520                      "<language>en</language>\n";
5521        } elsif ($format eq 'atom') {
5522                print <<XML;
5523<feed xmlns="http://www.w3.org/2005/Atom">
5524XML
5525                print "<title>$title</title>\n" .
5526                      "<subtitle>$descr</subtitle>\n" .
5527                      '<link rel="alternate" type="text/html" href="' .
5528                      $alt_url . '" />' . "\n" .
5529                      '<link rel="self" type="' . $content_type . '" href="' .
5530                      $cgi->self_url() . '" />' . "\n" .
5531                      "<id>" . href(-full=>1) . "</id>\n" .
5532                      # use project owner for feed author
5533                      "<author><name>$owner</name></author>\n";
5534                if (defined $favicon) {
5535                        print "<icon>" . esc_url($favicon) . "</icon>\n";
5536                }
5537                if (defined $logo_url) {
5538                        # not twice as wide as tall: 72 x 27 pixels
5539                        print "<logo>" . esc_url($logo) . "</logo>\n";
5540                }
5541                if (! %latest_date) {
5542                        # dummy date to keep the feed valid until commits trickle in:
5543                        print "<updated>1970-01-01T00:00:00Z</updated>\n";
5544                } else {
5545                        print "<updated>$latest_date{'iso-8601'}</updated>\n";
5546                }
5547        }
5548
5549        # contents
5550        for (my $i = 0; $i <= $#commitlist; $i++) {
5551                my %co = %{$commitlist[$i]};
5552                my $commit = $co{'id'};
5553                # we read 150, we always show 30 and the ones more recent than 48 hours
5554                if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
5555                        last;
5556                }
5557                my %cd = parse_date($co{'author_epoch'});
5558
5559                # get list of changed files
5560                open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
5561                        $co{'parent'} || "--root",
5562                        $co{'id'}, "--", (defined $file_name ? $file_name : ())
5563                        or next;
5564                my @difftree = map { chomp; $_ } <$fd>;
5565                close $fd
5566                        or next;
5567
5568                # print element (entry, item)
5569                my $co_url = href(-full=>1, action=>"commit", hash=>$commit);
5570                if ($format eq 'rss') {
5571                        print "<item>\n" .
5572                              "<title>" . esc_html($co{'title'}) . "</title>\n" .
5573                              "<author>" . esc_html($co{'author'}) . "</author>\n" .
5574                              "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
5575                              "<guid isPermaLink=\"true\">$co_url</guid>\n" .
5576                              "<link>$co_url</link>\n" .
5577                              "<description>" . esc_html($co{'title'}) . "</description>\n" .
5578                              "<content:encoded>" .
5579                              "<![CDATA[\n";
5580                } elsif ($format eq 'atom') {
5581                        print "<entry>\n" .
5582                              "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
5583                              "<updated>$cd{'iso-8601'}</updated>\n" .
5584                              "<author>\n" .
5585                              "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
5586                        if ($co{'author_email'}) {
5587                                print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
5588                        }
5589                        print "</author>\n" .
5590                              # use committer for contributor
5591                              "<contributor>\n" .
5592                              "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
5593                        if ($co{'committer_email'}) {
5594                                print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
5595                        }
5596                        print "</contributor>\n" .
5597                              "<published>$cd{'iso-8601'}</published>\n" .
5598                              "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
5599                              "<id>$co_url</id>\n" .
5600                              "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
5601                              "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
5602                }
5603                my $comment = $co{'comment'};
5604                print "<pre>\n";
5605                foreach my $line (@$comment) {
5606                        $line = esc_html($line);
5607                        print "$line\n";
5608                }
5609                print "</pre><ul>\n";
5610                foreach my $difftree_line (@difftree) {
5611                        my %difftree = parse_difftree_raw_line($difftree_line);
5612                        next if !$difftree{'from_id'};
5613
5614                        my $file = $difftree{'file'} || $difftree{'to_file'};
5615
5616                        print "<li>" .
5617                              "[" .
5618                              $cgi->a({-href => href(-full=>1, action=>"blobdiff",
5619                                                     hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
5620                                                     hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
5621                                                     file_name=>$file, file_parent=>$difftree{'from_file'}),
5622                                      -title => "diff"}, 'D');
5623                        if ($have_blame) {
5624                                print $cgi->a({-href => href(-full=>1, action=>"blame",
5625                                                             file_name=>$file, hash_base=>$commit),
5626                                              -title => "blame"}, 'B');
5627                        }
5628                        # if this is not a feed of a file history
5629                        if (!defined $file_name || $file_name ne $file) {
5630                                print $cgi->a({-href => href(-full=>1, action=>"history",
5631                                                             file_name=>$file, hash=>$commit),
5632                                              -title => "history"}, 'H');
5633                        }
5634                        $file = esc_path($file);
5635                        print "] ".
5636                              "$file</li>\n";
5637                }
5638                if ($format eq 'rss') {
5639                        print "</ul>]]>\n" .
5640                              "</content:encoded>\n" .
5641                              "</item>\n";
5642                } elsif ($format eq 'atom') {
5643                        print "</ul>\n</div>\n" .
5644                              "</content>\n" .
5645                              "</entry>\n";
5646                }
5647        }
5648
5649        # end of feed
5650        if ($format eq 'rss') {
5651                print "</channel>\n</rss>\n";
5652        }       elsif ($format eq 'atom') {
5653                print "</feed>\n";
5654        }
5655}
5656
5657sub git_rss {
5658        git_feed('rss');
5659}
5660
5661sub git_atom {
5662        git_feed('atom');
5663}
5664
5665sub git_opml {
5666        my @list = git_get_projects_list();
5667
5668        print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
5669        print <<XML;
5670<?xml version="1.0" encoding="utf-8"?>
5671<opml version="1.0">
5672<head>
5673  <title>$site_name OPML Export</title>
5674</head>
5675<body>
5676<outline text="git RSS feeds">
5677XML
5678
5679        foreach my $pr (@list) {
5680                my %proj = %$pr;
5681                my $head = git_get_head_hash($proj{'path'});
5682                if (!defined $head) {
5683                        next;
5684                }
5685                $git_dir = "$projectroot/$proj{'path'}";
5686                my %co = parse_commit($head);
5687                if (!%co) {
5688                        next;
5689                }
5690
5691                my $path = esc_html(chop_str($proj{'path'}, 25, 5));
5692                my $rss  = "$my_url?p=$proj{'path'};a=rss";
5693                my $html = "$my_url?p=$proj{'path'};a=summary";
5694                print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
5695        }
5696        print <<XML;
5697</outline>
5698</body>
5699</opml>
5700XML
5701}