gitweb / gitweb.perlon commit Add --aggressive option to 'git gc' (0d7566a)
   1#!/usr/bin/perl
   2
   3# gitweb - simple web interface to track changes in git repositories
   4#
   5# (C) 2005-2006, Kay Sievers <kay.sievers@vrfy.org>
   6# (C) 2005, Christian Gierke
   7#
   8# This program is licensed under the GPLv2
   9
  10use strict;
  11use warnings;
  12use CGI qw(:standard :escapeHTML -nosticky);
  13use CGI::Util qw(unescape);
  14use CGI::Carp qw(fatalsToBrowser);
  15use Encode;
  16use Fcntl ':mode';
  17use File::Find qw();
  18use File::Basename qw(basename);
  19binmode STDOUT, ':utf8';
  20
  21BEGIN {
  22        CGI->compile() if $ENV{'MOD_PERL'};
  23}
  24
  25our $cgi = new CGI;
  26our $version = "++GIT_VERSION++";
  27our $my_url = $cgi->url();
  28our $my_uri = $cgi->url(-absolute => 1);
  29
  30# core git executable to use
  31# this can just be "git" if your webserver has a sensible PATH
  32our $GIT = "++GIT_BINDIR++/git";
  33
  34# absolute fs-path which will be prepended to the project path
  35#our $projectroot = "/pub/scm";
  36our $projectroot = "++GITWEB_PROJECTROOT++";
  37
  38# target of the home link on top of all pages
  39our $home_link = $my_uri || "/";
  40
  41# string of the home link on top of all pages
  42our $home_link_str = "++GITWEB_HOME_LINK_STR++";
  43
  44# name of your site or organization to appear in page titles
  45# replace this with something more descriptive for clearer bookmarks
  46our $site_name = "++GITWEB_SITENAME++"
  47                 || ($ENV{'SERVER_NAME'} || "Untitled") . " Git";
  48
  49# filename of html text to include at top of each page
  50our $site_header = "++GITWEB_SITE_HEADER++";
  51# html text to include at home page
  52our $home_text = "++GITWEB_HOMETEXT++";
  53# filename of html text to include at bottom of each page
  54our $site_footer = "++GITWEB_SITE_FOOTER++";
  55
  56# URI of stylesheets
  57our @stylesheets = ("++GITWEB_CSS++");
  58# URI of a single stylesheet, which can be overridden in GITWEB_CONFIG.
  59our $stylesheet = undef;
  60# URI of GIT logo (72x27 size)
  61our $logo = "++GITWEB_LOGO++";
  62# URI of GIT favicon, assumed to be image/png type
  63our $favicon = "++GITWEB_FAVICON++";
  64
  65# URI and label (title) of GIT logo link
  66#our $logo_url = "http://www.kernel.org/pub/software/scm/git/docs/";
  67#our $logo_label = "git documentation";
  68our $logo_url = "http://git.or.cz/";
  69our $logo_label = "git homepage";
  70
  71# source of projects list
  72our $projects_list = "++GITWEB_LIST++";
  73
  74# default order of projects list
  75# valid values are none, project, descr, owner, and age
  76our $default_projects_order = "project";
  77
  78# show repository only if this file exists
  79# (only effective if this variable evaluates to true)
  80our $export_ok = "++GITWEB_EXPORT_OK++";
  81
  82# only allow viewing of repositories also shown on the overview page
  83our $strict_export = "++GITWEB_STRICT_EXPORT++";
  84
  85# list of git base URLs used for URL to where fetch project from,
  86# i.e. full URL is "$git_base_url/$project"
  87our @git_base_url_list = grep { $_ ne '' } ("++GITWEB_BASE_URL++");
  88
  89# default blob_plain mimetype and default charset for text/plain blob
  90our $default_blob_plain_mimetype = 'text/plain';
  91our $default_text_plain_charset  = undef;
  92
  93# file to use for guessing MIME types before trying /etc/mime.types
  94# (relative to the current git repository)
  95our $mimetypes_file = undef;
  96
  97# You define site-wide feature defaults here; override them with
  98# $GITWEB_CONFIG as necessary.
  99our %feature = (
 100        # feature => {
 101        #       'sub' => feature-sub (subroutine),
 102        #       'override' => allow-override (boolean),
 103        #       'default' => [ default options...] (array reference)}
 104        #
 105        # if feature is overridable (it means that allow-override has true value,
 106        # then feature-sub will be called with default options as parameters;
 107        # return value of feature-sub indicates if to enable specified feature
 108        #
 109        # use gitweb_check_feature(<feature>) to check if <feature> is enabled
 110
 111        # Enable the 'blame' blob view, showing the last commit that modified
 112        # each line in the file. This can be very CPU-intensive.
 113
 114        # To enable system wide have in $GITWEB_CONFIG
 115        # $feature{'blame'}{'default'} = [1];
 116        # To have project specific config enable override in $GITWEB_CONFIG
 117        # $feature{'blame'}{'override'} = 1;
 118        # and in project config gitweb.blame = 0|1;
 119        'blame' => {
 120                'sub' => \&feature_blame,
 121                'override' => 0,
 122                'default' => [0]},
 123
 124        # Enable the 'snapshot' link, providing a compressed tarball of any
 125        # tree. This can potentially generate high traffic if you have large
 126        # project.
 127
 128        # To disable system wide have in $GITWEB_CONFIG
 129        # $feature{'snapshot'}{'default'} = [undef];
 130        # To have project specific config enable override in $GITWEB_CONFIG
 131        # $feature{'snapshot'}{'override'} = 1;
 132        # and in project config gitweb.snapshot = none|gzip|bzip2;
 133        'snapshot' => {
 134                'sub' => \&feature_snapshot,
 135                'override' => 0,
 136                #         => [content-encoding, suffix, program]
 137                'default' => ['x-gzip', 'gz', 'gzip']},
 138
 139        # Enable text search, which will list the commits which match author,
 140        # committer or commit text to a given string.  Enabled by default.
 141        'search' => {
 142                'override' => 0,
 143                'default' => [1]},
 144
 145        # Enable the pickaxe search, which will list the commits that modified
 146        # a given string in a file. This can be practical and quite faster
 147        # alternative to 'blame', but still potentially CPU-intensive.
 148
 149        # To enable system wide have in $GITWEB_CONFIG
 150        # $feature{'pickaxe'}{'default'} = [1];
 151        # To have project specific config enable override in $GITWEB_CONFIG
 152        # $feature{'pickaxe'}{'override'} = 1;
 153        # and in project config gitweb.pickaxe = 0|1;
 154        'pickaxe' => {
 155                'sub' => \&feature_pickaxe,
 156                'override' => 0,
 157                'default' => [1]},
 158
 159        # Make gitweb use an alternative format of the URLs which can be
 160        # more readable and natural-looking: project name is embedded
 161        # directly in the path and the query string contains other
 162        # auxiliary information. All gitweb installations recognize
 163        # URL in either format; this configures in which formats gitweb
 164        # generates links.
 165
 166        # To enable system wide have in $GITWEB_CONFIG
 167        # $feature{'pathinfo'}{'default'} = [1];
 168        # Project specific override is not supported.
 169
 170        # Note that you will need to change the default location of CSS,
 171        # favicon, logo and possibly other files to an absolute URL. Also,
 172        # if gitweb.cgi serves as your indexfile, you will need to force
 173        # $my_uri to contain the script name in your $GITWEB_CONFIG.
 174        'pathinfo' => {
 175                'override' => 0,
 176                'default' => [0]},
 177
 178        # Make gitweb consider projects in project root subdirectories
 179        # to be forks of existing projects. Given project $projname.git,
 180        # projects matching $projname/*.git will not be shown in the main
 181        # projects list, instead a '+' mark will be added to $projname
 182        # there and a 'forks' view will be enabled for the project, listing
 183        # all the forks. If project list is taken from a file, forks have
 184        # to be listed after the main project.
 185
 186        # To enable system wide have in $GITWEB_CONFIG
 187        # $feature{'forks'}{'default'} = [1];
 188        # Project specific override is not supported.
 189        'forks' => {
 190                'override' => 0,
 191                'default' => [0]},
 192);
 193
 194sub gitweb_check_feature {
 195        my ($name) = @_;
 196        return unless exists $feature{$name};
 197        my ($sub, $override, @defaults) = (
 198                $feature{$name}{'sub'},
 199                $feature{$name}{'override'},
 200                @{$feature{$name}{'default'}});
 201        if (!$override) { return @defaults; }
 202        if (!defined $sub) {
 203                warn "feature $name is not overrideable";
 204                return @defaults;
 205        }
 206        return $sub->(@defaults);
 207}
 208
 209sub feature_blame {
 210        my ($val) = git_get_project_config('blame', '--bool');
 211
 212        if ($val eq 'true') {
 213                return 1;
 214        } elsif ($val eq 'false') {
 215                return 0;
 216        }
 217
 218        return $_[0];
 219}
 220
 221sub feature_snapshot {
 222        my ($ctype, $suffix, $command) = @_;
 223
 224        my ($val) = git_get_project_config('snapshot');
 225
 226        if ($val eq 'gzip') {
 227                return ('x-gzip', 'gz', 'gzip');
 228        } elsif ($val eq 'bzip2') {
 229                return ('x-bzip2', 'bz2', 'bzip2');
 230        } elsif ($val eq 'none') {
 231                return ();
 232        }
 233
 234        return ($ctype, $suffix, $command);
 235}
 236
 237sub gitweb_have_snapshot {
 238        my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
 239        my $have_snapshot = (defined $ctype && defined $suffix);
 240
 241        return $have_snapshot;
 242}
 243
 244sub feature_pickaxe {
 245        my ($val) = git_get_project_config('pickaxe', '--bool');
 246
 247        if ($val eq 'true') {
 248                return (1);
 249        } elsif ($val eq 'false') {
 250                return (0);
 251        }
 252
 253        return ($_[0]);
 254}
 255
 256# checking HEAD file with -e is fragile if the repository was
 257# initialized long time ago (i.e. symlink HEAD) and was pack-ref'ed
 258# and then pruned.
 259sub check_head_link {
 260        my ($dir) = @_;
 261        my $headfile = "$dir/HEAD";
 262        return ((-e $headfile) ||
 263                (-l $headfile && readlink($headfile) =~ /^refs\/heads\//));
 264}
 265
 266sub check_export_ok {
 267        my ($dir) = @_;
 268        return (check_head_link($dir) &&
 269                (!$export_ok || -e "$dir/$export_ok"));
 270}
 271
 272# rename detection options for git-diff and git-diff-tree
 273# - default is '-M', with the cost proportional to
 274#   (number of removed files) * (number of new files).
 275# - more costly is '-C' (or '-C', '-M'), with the cost proportional to
 276#   (number of changed files + number of removed files) * (number of new files)
 277# - even more costly is '-C', '--find-copies-harder' with cost
 278#   (number of files in the original tree) * (number of new files)
 279# - one might want to include '-B' option, e.g. '-B', '-M'
 280our @diff_opts = ('-M'); # taken from git_commit
 281
 282our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 283do $GITWEB_CONFIG if -e $GITWEB_CONFIG;
 284
 285# version of the core git binary
 286our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 287
 288$projects_list ||= $projectroot;
 289
 290# ======================================================================
 291# input validation and dispatch
 292our $action = $cgi->param('a');
 293if (defined $action) {
 294        if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 295                die_error(undef, "Invalid action parameter");
 296        }
 297}
 298
 299# parameters which are pathnames
 300our $project = $cgi->param('p');
 301if (defined $project) {
 302        if (!validate_pathname($project) ||
 303            !(-d "$projectroot/$project") ||
 304            !check_head_link("$projectroot/$project") ||
 305            ($export_ok && !(-e "$projectroot/$project/$export_ok")) ||
 306            ($strict_export && !project_in_list($project))) {
 307                undef $project;
 308                die_error(undef, "No such project");
 309        }
 310}
 311
 312our $file_name = $cgi->param('f');
 313if (defined $file_name) {
 314        if (!validate_pathname($file_name)) {
 315                die_error(undef, "Invalid file parameter");
 316        }
 317}
 318
 319our $file_parent = $cgi->param('fp');
 320if (defined $file_parent) {
 321        if (!validate_pathname($file_parent)) {
 322                die_error(undef, "Invalid file parent parameter");
 323        }
 324}
 325
 326# parameters which are refnames
 327our $hash = $cgi->param('h');
 328if (defined $hash) {
 329        if (!validate_refname($hash)) {
 330                die_error(undef, "Invalid hash parameter");
 331        }
 332}
 333
 334our $hash_parent = $cgi->param('hp');
 335if (defined $hash_parent) {
 336        if (!validate_refname($hash_parent)) {
 337                die_error(undef, "Invalid hash parent parameter");
 338        }
 339}
 340
 341our $hash_base = $cgi->param('hb');
 342if (defined $hash_base) {
 343        if (!validate_refname($hash_base)) {
 344                die_error(undef, "Invalid hash base parameter");
 345        }
 346}
 347
 348our $hash_parent_base = $cgi->param('hpb');
 349if (defined $hash_parent_base) {
 350        if (!validate_refname($hash_parent_base)) {
 351                die_error(undef, "Invalid hash parent base parameter");
 352        }
 353}
 354
 355# other parameters
 356our $page = $cgi->param('pg');
 357if (defined $page) {
 358        if ($page =~ m/[^0-9]/) {
 359                die_error(undef, "Invalid page parameter");
 360        }
 361}
 362
 363our $searchtext = $cgi->param('s');
 364if (defined $searchtext) {
 365        if ($searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 366                die_error(undef, "Invalid search parameter");
 367        }
 368        if (length($searchtext) < 2) {
 369                die_error(undef, "At least two characters are required for search parameter");
 370        }
 371        $searchtext = quotemeta $searchtext;
 372}
 373
 374our $searchtype = $cgi->param('st');
 375if (defined $searchtype) {
 376        if ($searchtype =~ m/[^a-z]/) {
 377                die_error(undef, "Invalid searchtype parameter");
 378        }
 379}
 380
 381# now read PATH_INFO and use it as alternative to parameters
 382sub evaluate_path_info {
 383        return if defined $project;
 384        my $path_info = $ENV{"PATH_INFO"};
 385        return if !$path_info;
 386        $path_info =~ s,^/+,,;
 387        return if !$path_info;
 388        # find which part of PATH_INFO is project
 389        $project = $path_info;
 390        $project =~ s,/+$,,;
 391        while ($project && !check_head_link("$projectroot/$project")) {
 392                $project =~ s,/*[^/]*$,,;
 393        }
 394        # validate project
 395        $project = validate_pathname($project);
 396        if (!$project ||
 397            ($export_ok && !-e "$projectroot/$project/$export_ok") ||
 398            ($strict_export && !project_in_list($project))) {
 399                undef $project;
 400                return;
 401        }
 402        # do not change any parameters if an action is given using the query string
 403        return if $action;
 404        $path_info =~ s,^$project/*,,;
 405        my ($refname, $pathname) = split(/:/, $path_info, 2);
 406        if (defined $pathname) {
 407                # we got "project.git/branch:filename" or "project.git/branch:dir/"
 408                # we could use git_get_type(branch:pathname), but it needs $git_dir
 409                $pathname =~ s,^/+,,;
 410                if (!$pathname || substr($pathname, -1) eq "/") {
 411                        $action  ||= "tree";
 412                        $pathname =~ s,/$,,;
 413                } else {
 414                        $action  ||= "blob_plain";
 415                }
 416                $hash_base ||= validate_refname($refname);
 417                $file_name ||= validate_pathname($pathname);
 418        } elsif (defined $refname) {
 419                # we got "project.git/branch"
 420                $action ||= "shortlog";
 421                $hash   ||= validate_refname($refname);
 422        }
 423}
 424evaluate_path_info();
 425
 426# path to the current git repository
 427our $git_dir;
 428$git_dir = "$projectroot/$project" if $project;
 429
 430# dispatch
 431my %actions = (
 432        "blame" => \&git_blame2,
 433        "blobdiff" => \&git_blobdiff,
 434        "blobdiff_plain" => \&git_blobdiff_plain,
 435        "blob" => \&git_blob,
 436        "blob_plain" => \&git_blob_plain,
 437        "commitdiff" => \&git_commitdiff,
 438        "commitdiff_plain" => \&git_commitdiff_plain,
 439        "commit" => \&git_commit,
 440        "forks" => \&git_forks,
 441        "heads" => \&git_heads,
 442        "history" => \&git_history,
 443        "log" => \&git_log,
 444        "rss" => \&git_rss,
 445        "atom" => \&git_atom,
 446        "search" => \&git_search,
 447        "search_help" => \&git_search_help,
 448        "shortlog" => \&git_shortlog,
 449        "summary" => \&git_summary,
 450        "tag" => \&git_tag,
 451        "tags" => \&git_tags,
 452        "tree" => \&git_tree,
 453        "snapshot" => \&git_snapshot,
 454        "object" => \&git_object,
 455        # those below don't need $project
 456        "opml" => \&git_opml,
 457        "project_list" => \&git_project_list,
 458        "project_index" => \&git_project_index,
 459);
 460
 461if (!defined $action) {
 462        if (defined $hash) {
 463                $action = git_get_type($hash);
 464        } elsif (defined $hash_base && defined $file_name) {
 465                $action = git_get_type("$hash_base:$file_name");
 466        } elsif (defined $project) {
 467                $action = 'summary';
 468        } else {
 469                $action = 'project_list';
 470        }
 471}
 472if (!defined($actions{$action})) {
 473        die_error(undef, "Unknown action");
 474}
 475if ($action !~ m/^(opml|project_list|project_index)$/ &&
 476    !$project) {
 477        die_error(undef, "Project needed");
 478}
 479$actions{$action}->();
 480exit;
 481
 482## ======================================================================
 483## action links
 484
 485sub href(%) {
 486        my %params = @_;
 487        # default is to use -absolute url() i.e. $my_uri
 488        my $href = $params{-full} ? $my_url : $my_uri;
 489
 490        # XXX: Warning: If you touch this, check the search form for updating,
 491        # too.
 492
 493        my @mapping = (
 494                project => "p",
 495                action => "a",
 496                file_name => "f",
 497                file_parent => "fp",
 498                hash => "h",
 499                hash_parent => "hp",
 500                hash_base => "hb",
 501                hash_parent_base => "hpb",
 502                page => "pg",
 503                order => "o",
 504                searchtext => "s",
 505                searchtype => "st",
 506        );
 507        my %mapping = @mapping;
 508
 509        $params{'project'} = $project unless exists $params{'project'};
 510
 511        my ($use_pathinfo) = gitweb_check_feature('pathinfo');
 512        if ($use_pathinfo) {
 513                # use PATH_INFO for project name
 514                $href .= "/$params{'project'}" if defined $params{'project'};
 515                delete $params{'project'};
 516
 517                # Summary just uses the project path URL
 518                if (defined $params{'action'} && $params{'action'} eq 'summary') {
 519                        delete $params{'action'};
 520                }
 521        }
 522
 523        # now encode the parameters explicitly
 524        my @result = ();
 525        for (my $i = 0; $i < @mapping; $i += 2) {
 526                my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 527                if (defined $params{$name}) {
 528                        push @result, $symbol . "=" . esc_param($params{$name});
 529                }
 530        }
 531        $href .= "?" . join(';', @result) if scalar @result;
 532
 533        return $href;
 534}
 535
 536
 537## ======================================================================
 538## validation, quoting/unquoting and escaping
 539
 540sub validate_pathname {
 541        my $input = shift || return undef;
 542
 543        # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 544        # at the beginning, at the end, and between slashes.
 545        # also this catches doubled slashes
 546        if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 547                return undef;
 548        }
 549        # no null characters
 550        if ($input =~ m!\0!) {
 551                return undef;
 552        }
 553        return $input;
 554}
 555
 556sub validate_refname {
 557        my $input = shift || return undef;
 558
 559        # textual hashes are O.K.
 560        if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 561                return $input;
 562        }
 563        # it must be correct pathname
 564        $input = validate_pathname($input)
 565                or return undef;
 566        # restrictions on ref name according to git-check-ref-format
 567        if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 568                return undef;
 569        }
 570        return $input;
 571}
 572
 573# quote unsafe chars, but keep the slash, even when it's not
 574# correct, but quoted slashes look too horrible in bookmarks
 575sub esc_param {
 576        my $str = shift;
 577        $str =~ s/([^A-Za-z0-9\-_.~()\/:@])/sprintf("%%%02X", ord($1))/eg;
 578        $str =~ s/\+/%2B/g;
 579        $str =~ s/ /\+/g;
 580        return $str;
 581}
 582
 583# quote unsafe chars in whole URL, so some charactrs cannot be quoted
 584sub esc_url {
 585        my $str = shift;
 586        $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 587        $str =~ s/\+/%2B/g;
 588        $str =~ s/ /\+/g;
 589        return $str;
 590}
 591
 592# replace invalid utf8 character with SUBSTITUTION sequence
 593sub esc_html ($;%) {
 594        my $str = shift;
 595        my %opts = @_;
 596
 597        $str = decode_utf8($str);
 598        $str = $cgi->escapeHTML($str);
 599        if ($opts{'-nbsp'}) {
 600                $str =~ s/ /&nbsp;/g;
 601        }
 602        $str =~ s|([[:cntrl:]])|(($1 ne "\t") ? quot_cec($1) : $1)|eg;
 603        return $str;
 604}
 605
 606# quote control characters and escape filename to HTML
 607sub esc_path {
 608        my $str = shift;
 609        my %opts = @_;
 610
 611        $str = decode_utf8($str);
 612        $str = $cgi->escapeHTML($str);
 613        if ($opts{'-nbsp'}) {
 614                $str =~ s/ /&nbsp;/g;
 615        }
 616        $str =~ s|([[:cntrl:]])|quot_cec($1)|eg;
 617        return $str;
 618}
 619
 620# Make control characters "printable", using character escape codes (CEC)
 621sub quot_cec {
 622        my $cntrl = shift;
 623        my %es = ( # character escape codes, aka escape sequences
 624                   "\t" => '\t',   # tab            (HT)
 625                   "\n" => '\n',   # line feed      (LF)
 626                   "\r" => '\r',   # carrige return (CR)
 627                   "\f" => '\f',   # form feed      (FF)
 628                   "\b" => '\b',   # backspace      (BS)
 629                   "\a" => '\a',   # alarm (bell)   (BEL)
 630                   "\e" => '\e',   # escape         (ESC)
 631                   "\013" => '\v', # vertical tab   (VT)
 632                   "\000" => '\0', # nul character  (NUL)
 633                   );
 634        my $chr = ( (exists $es{$cntrl})
 635                    ? $es{$cntrl}
 636                    : sprintf('\%03o', ord($cntrl)) );
 637        return "<span class=\"cntrl\">$chr</span>";
 638}
 639
 640# Alternatively use unicode control pictures codepoints,
 641# Unicode "printable representation" (PR)
 642sub quot_upr {
 643        my $cntrl = shift;
 644        my $chr = sprintf('&#%04d;', 0x2400+ord($cntrl));
 645        return "<span class=\"cntrl\">$chr</span>";
 646}
 647
 648# git may return quoted and escaped filenames
 649sub unquote {
 650        my $str = shift;
 651
 652        sub unq {
 653                my $seq = shift;
 654                my %es = ( # character escape codes, aka escape sequences
 655                        't' => "\t",   # tab            (HT, TAB)
 656                        'n' => "\n",   # newline        (NL)
 657                        'r' => "\r",   # return         (CR)
 658                        'f' => "\f",   # form feed      (FF)
 659                        'b' => "\b",   # backspace      (BS)
 660                        'a' => "\a",   # alarm (bell)   (BEL)
 661                        'e' => "\e",   # escape         (ESC)
 662                        'v' => "\013", # vertical tab   (VT)
 663                );
 664
 665                if ($seq =~ m/^[0-7]{1,3}$/) {
 666                        # octal char sequence
 667                        return chr(oct($seq));
 668                } elsif (exists $es{$seq}) {
 669                        # C escape sequence, aka character escape code
 670                        return $es{$seq}
 671                }
 672                # quoted ordinary character
 673                return $seq;
 674        }
 675
 676        if ($str =~ m/^"(.*)"$/) {
 677                # needs unquoting
 678                $str = $1;
 679                $str =~ s/\\([^0-7]|[0-7]{1,3})/unq($1)/eg;
 680        }
 681        return $str;
 682}
 683
 684# escape tabs (convert tabs to spaces)
 685sub untabify {
 686        my $line = shift;
 687
 688        while ((my $pos = index($line, "\t")) != -1) {
 689                if (my $count = (8 - ($pos % 8))) {
 690                        my $spaces = ' ' x $count;
 691                        $line =~ s/\t/$spaces/;
 692                }
 693        }
 694
 695        return $line;
 696}
 697
 698sub project_in_list {
 699        my $project = shift;
 700        my @list = git_get_projects_list();
 701        return @list && scalar(grep { $_->{'path'} eq $project } @list);
 702}
 703
 704## ----------------------------------------------------------------------
 705## HTML aware string manipulation
 706
 707sub chop_str {
 708        my $str = shift;
 709        my $len = shift;
 710        my $add_len = shift || 10;
 711
 712        # allow only $len chars, but don't cut a word if it would fit in $add_len
 713        # if it doesn't fit, cut it if it's still longer than the dots we would add
 714        $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 715        my $body = $1;
 716        my $tail = $2;
 717        if (length($tail) > 4) {
 718                $tail = " ...";
 719                $body =~ s/&[^;]*$//; # remove chopped character entities
 720        }
 721        return "$body$tail";
 722}
 723
 724## ----------------------------------------------------------------------
 725## functions returning short strings
 726
 727# CSS class for given age value (in seconds)
 728sub age_class {
 729        my $age = shift;
 730
 731        if ($age < 60*60*2) {
 732                return "age0";
 733        } elsif ($age < 60*60*24*2) {
 734                return "age1";
 735        } else {
 736                return "age2";
 737        }
 738}
 739
 740# convert age in seconds to "nn units ago" string
 741sub age_string {
 742        my $age = shift;
 743        my $age_str;
 744
 745        if ($age > 60*60*24*365*2) {
 746                $age_str = (int $age/60/60/24/365);
 747                $age_str .= " years ago";
 748        } elsif ($age > 60*60*24*(365/12)*2) {
 749                $age_str = int $age/60/60/24/(365/12);
 750                $age_str .= " months ago";
 751        } elsif ($age > 60*60*24*7*2) {
 752                $age_str = int $age/60/60/24/7;
 753                $age_str .= " weeks ago";
 754        } elsif ($age > 60*60*24*2) {
 755                $age_str = int $age/60/60/24;
 756                $age_str .= " days ago";
 757        } elsif ($age > 60*60*2) {
 758                $age_str = int $age/60/60;
 759                $age_str .= " hours ago";
 760        } elsif ($age > 60*2) {
 761                $age_str = int $age/60;
 762                $age_str .= " min ago";
 763        } elsif ($age > 2) {
 764                $age_str = int $age;
 765                $age_str .= " sec ago";
 766        } else {
 767                $age_str .= " right now";
 768        }
 769        return $age_str;
 770}
 771
 772# convert file mode in octal to symbolic file mode string
 773sub mode_str {
 774        my $mode = oct shift;
 775
 776        if (S_ISDIR($mode & S_IFMT)) {
 777                return 'drwxr-xr-x';
 778        } elsif (S_ISLNK($mode)) {
 779                return 'lrwxrwxrwx';
 780        } elsif (S_ISREG($mode)) {
 781                # git cares only about the executable bit
 782                if ($mode & S_IXUSR) {
 783                        return '-rwxr-xr-x';
 784                } else {
 785                        return '-rw-r--r--';
 786                };
 787        } else {
 788                return '----------';
 789        }
 790}
 791
 792# convert file mode in octal to file type string
 793sub file_type {
 794        my $mode = shift;
 795
 796        if ($mode !~ m/^[0-7]+$/) {
 797                return $mode;
 798        } else {
 799                $mode = oct $mode;
 800        }
 801
 802        if (S_ISDIR($mode & S_IFMT)) {
 803                return "directory";
 804        } elsif (S_ISLNK($mode)) {
 805                return "symlink";
 806        } elsif (S_ISREG($mode)) {
 807                return "file";
 808        } else {
 809                return "unknown";
 810        }
 811}
 812
 813# convert file mode in octal to file type description string
 814sub file_type_long {
 815        my $mode = shift;
 816
 817        if ($mode !~ m/^[0-7]+$/) {
 818                return $mode;
 819        } else {
 820                $mode = oct $mode;
 821        }
 822
 823        if (S_ISDIR($mode & S_IFMT)) {
 824                return "directory";
 825        } elsif (S_ISLNK($mode)) {
 826                return "symlink";
 827        } elsif (S_ISREG($mode)) {
 828                if ($mode & S_IXUSR) {
 829                        return "executable";
 830                } else {
 831                        return "file";
 832                };
 833        } else {
 834                return "unknown";
 835        }
 836}
 837
 838
 839## ----------------------------------------------------------------------
 840## functions returning short HTML fragments, or transforming HTML fragments
 841## which don't belong to other sections
 842
 843# format line of commit message.
 844sub format_log_line_html {
 845        my $line = shift;
 846
 847        $line = esc_html($line, -nbsp=>1);
 848        if ($line =~ m/([0-9a-fA-F]{8,40})/) {
 849                my $hash_text = $1;
 850                my $link =
 851                        $cgi->a({-href => href(action=>"object", hash=>$hash_text),
 852                                -class => "text"}, $hash_text);
 853                $line =~ s/$hash_text/$link/;
 854        }
 855        return $line;
 856}
 857
 858# format marker of refs pointing to given object
 859sub format_ref_marker {
 860        my ($refs, $id) = @_;
 861        my $markers = '';
 862
 863        if (defined $refs->{$id}) {
 864                foreach my $ref (@{$refs->{$id}}) {
 865                        my ($type, $name) = qw();
 866                        # e.g. tags/v2.6.11 or heads/next
 867                        if ($ref =~ m!^(.*?)s?/(.*)$!) {
 868                                $type = $1;
 869                                $name = $2;
 870                        } else {
 871                                $type = "ref";
 872                                $name = $ref;
 873                        }
 874
 875                        $markers .= " <span class=\"$type\" title=\"$ref\">" .
 876                                    esc_html($name) . "</span>";
 877                }
 878        }
 879
 880        if ($markers) {
 881                return ' <span class="refs">'. $markers . '</span>';
 882        } else {
 883                return "";
 884        }
 885}
 886
 887# format, perhaps shortened and with markers, title line
 888sub format_subject_html {
 889        my ($long, $short, $href, $extra) = @_;
 890        $extra = '' unless defined($extra);
 891
 892        if (length($short) < length($long)) {
 893                return $cgi->a({-href => $href, -class => "list subject",
 894                                -title => decode_utf8($long)},
 895                       esc_html($short) . $extra);
 896        } else {
 897                return $cgi->a({-href => $href, -class => "list subject"},
 898                       esc_html($long)  . $extra);
 899        }
 900}
 901
 902# format patch (diff) line (rather not to be used for diff headers)
 903sub format_diff_line {
 904        my $line = shift;
 905        my ($from, $to) = @_;
 906        my $diff_class = "";
 907
 908        chomp $line;
 909
 910        if ($from && $to && ref($from->{'href'}) eq "ARRAY") {
 911                # combined diff
 912                my $prefix = substr($line, 0, scalar @{$from->{'href'}});
 913                if ($line =~ m/^\@{3}/) {
 914                        $diff_class = " chunk_header";
 915                } elsif ($line =~ m/^\\/) {
 916                        $diff_class = " incomplete";
 917                } elsif ($prefix =~ tr/+/+/) {
 918                        $diff_class = " add";
 919                } elsif ($prefix =~ tr/-/-/) {
 920                        $diff_class = " rem";
 921                }
 922        } else {
 923                # assume ordinary diff
 924                my $char = substr($line, 0, 1);
 925                if ($char eq '+') {
 926                        $diff_class = " add";
 927                } elsif ($char eq '-') {
 928                        $diff_class = " rem";
 929                } elsif ($char eq '@') {
 930                        $diff_class = " chunk_header";
 931                } elsif ($char eq "\\") {
 932                        $diff_class = " incomplete";
 933                }
 934        }
 935        $line = untabify($line);
 936        if ($from && $to && $line =~ m/^\@{2} /) {
 937                my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
 938                        $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
 939
 940                $from_lines = 0 unless defined $from_lines;
 941                $to_lines   = 0 unless defined $to_lines;
 942
 943                if ($from->{'href'}) {
 944                        $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
 945                                             -class=>"list"}, $from_text);
 946                }
 947                if ($to->{'href'}) {
 948                        $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
 949                                             -class=>"list"}, $to_text);
 950                }
 951                $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
 952                        "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
 953                return "<div class=\"diff$diff_class\">$line</div>\n";
 954        } elsif ($from && $to && $line =~ m/^\@{3}/) {
 955                my ($prefix, $ranges, $section) = $line =~ m/^(\@+) (.*?) \@+(.*)$/;
 956                my (@from_text, @from_start, @from_nlines, $to_text, $to_start, $to_nlines);
 957
 958                @from_text = split(' ', $ranges);
 959                for (my $i = 0; $i < @from_text; ++$i) {
 960                        ($from_start[$i], $from_nlines[$i]) =
 961                                (split(',', substr($from_text[$i], 1)), 0);
 962                }
 963
 964                $to_text   = pop @from_text;
 965                $to_start  = pop @from_start;
 966                $to_nlines = pop @from_nlines;
 967
 968                $line = "<span class=\"chunk_info\">$prefix ";
 969                for (my $i = 0; $i < @from_text; ++$i) {
 970                        if ($from->{'href'}[$i]) {
 971                                $line .= $cgi->a({-href=>"$from->{'href'}[$i]#l$from_start[$i]",
 972                                                  -class=>"list"}, $from_text[$i]);
 973                        } else {
 974                                $line .= $from_text[$i];
 975                        }
 976                        $line .= " ";
 977                }
 978                if ($to->{'href'}) {
 979                        $line .= $cgi->a({-href=>"$to->{'href'}#l$to_start",
 980                                          -class=>"list"}, $to_text);
 981                } else {
 982                        $line .= $to_text;
 983                }
 984                $line .= " $prefix</span>" .
 985                         "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
 986                return "<div class=\"diff$diff_class\">$line</div>\n";
 987        }
 988        return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
 989}
 990
 991## ----------------------------------------------------------------------
 992## git utility subroutines, invoking git commands
 993
 994# returns path to the core git executable and the --git-dir parameter as list
 995sub git_cmd {
 996        return $GIT, '--git-dir='.$git_dir;
 997}
 998
 999# returns path to the core git executable and the --git-dir parameter as string
1000sub git_cmd_str {
1001        return join(' ', git_cmd());
1002}
1003
1004# get HEAD ref of given project as hash
1005sub git_get_head_hash {
1006        my $project = shift;
1007        my $o_git_dir = $git_dir;
1008        my $retval = undef;
1009        $git_dir = "$projectroot/$project";
1010        if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
1011                my $head = <$fd>;
1012                close $fd;
1013                if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
1014                        $retval = $1;
1015                }
1016        }
1017        if (defined $o_git_dir) {
1018                $git_dir = $o_git_dir;
1019        }
1020        return $retval;
1021}
1022
1023# get type of given object
1024sub git_get_type {
1025        my $hash = shift;
1026
1027        open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
1028        my $type = <$fd>;
1029        close $fd or return;
1030        chomp $type;
1031        return $type;
1032}
1033
1034sub git_get_project_config {
1035        my ($key, $type) = @_;
1036
1037        return unless ($key);
1038        $key =~ s/^gitweb\.//;
1039        return if ($key =~ m/\W/);
1040
1041        my @x = (git_cmd(), 'config');
1042        if (defined $type) { push @x, $type; }
1043        push @x, "--get";
1044        push @x, "gitweb.$key";
1045        my $val = qx(@x);
1046        chomp $val;
1047        return ($val);
1048}
1049
1050# get hash of given path at given ref
1051sub git_get_hash_by_path {
1052        my $base = shift;
1053        my $path = shift || return undef;
1054        my $type = shift;
1055
1056        $path =~ s,/+$,,;
1057
1058        open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
1059                or die_error(undef, "Open git-ls-tree failed");
1060        my $line = <$fd>;
1061        close $fd or return undef;
1062
1063        #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1064        $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
1065        if (defined $type && $type ne $2) {
1066                # type doesn't match
1067                return undef;
1068        }
1069        return $3;
1070}
1071
1072# get path of entry with given hash at given tree-ish (ref)
1073# used to get 'from' filename for combined diff (merge commit) for renames
1074sub git_get_path_by_hash {
1075        my $base = shift || return;
1076        my $hash = shift || return;
1077
1078        local $/ = "\0";
1079
1080        open my $fd, "-|", git_cmd(), "ls-tree", '-r', '-t', '-z', $base
1081                or return undef;
1082        while (my $line = <$fd>) {
1083                chomp $line;
1084
1085                #'040000 tree 595596a6a9117ddba9fe379b6b012b558bac8423  gitweb'
1086                #'100644 blob e02e90f0429be0d2a69b76571101f20b8f75530f  gitweb/README'
1087                if ($line =~ m/(?:[0-9]+) (?:.+) $hash\t(.+)$/) {
1088                        close $fd;
1089                        return $1;
1090                }
1091        }
1092        close $fd;
1093        return undef;
1094}
1095
1096## ......................................................................
1097## git utility functions, directly accessing git repository
1098
1099sub git_get_project_description {
1100        my $path = shift;
1101
1102        open my $fd, "$projectroot/$path/description" or return undef;
1103        my $descr = <$fd>;
1104        close $fd;
1105        chomp $descr;
1106        return $descr;
1107}
1108
1109sub git_get_project_url_list {
1110        my $path = shift;
1111
1112        open my $fd, "$projectroot/$path/cloneurl" or return;
1113        my @git_project_url_list = map { chomp; $_ } <$fd>;
1114        close $fd;
1115
1116        return wantarray ? @git_project_url_list : \@git_project_url_list;
1117}
1118
1119sub git_get_projects_list {
1120        my ($filter) = @_;
1121        my @list;
1122
1123        $filter ||= '';
1124        $filter =~ s/\.git$//;
1125
1126        my ($check_forks) = gitweb_check_feature('forks');
1127
1128        if (-d $projects_list) {
1129                # search in directory
1130                my $dir = $projects_list . ($filter ? "/$filter" : '');
1131                # remove the trailing "/"
1132                $dir =~ s!/+$!!;
1133                my $pfxlen = length("$dir");
1134
1135                File::Find::find({
1136                        follow_fast => 1, # follow symbolic links
1137                        dangling_symlinks => 0, # ignore dangling symlinks, silently
1138                        wanted => sub {
1139                                # skip project-list toplevel, if we get it.
1140                                return if (m!^[/.]$!);
1141                                # only directories can be git repositories
1142                                return unless (-d $_);
1143
1144                                my $subdir = substr($File::Find::name, $pfxlen + 1);
1145                                # we check related file in $projectroot
1146                                if ($check_forks and $subdir =~ m#/.#) {
1147                                        $File::Find::prune = 1;
1148                                } elsif (check_export_ok("$projectroot/$filter/$subdir")) {
1149                                        push @list, { path => ($filter ? "$filter/" : '') . $subdir };
1150                                        $File::Find::prune = 1;
1151                                }
1152                        },
1153                }, "$dir");
1154
1155        } elsif (-f $projects_list) {
1156                # read from file(url-encoded):
1157                # 'git%2Fgit.git Linus+Torvalds'
1158                # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1159                # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1160                my %paths;
1161                open my ($fd), $projects_list or return;
1162        PROJECT:
1163                while (my $line = <$fd>) {
1164                        chomp $line;
1165                        my ($path, $owner) = split ' ', $line;
1166                        $path = unescape($path);
1167                        $owner = unescape($owner);
1168                        if (!defined $path) {
1169                                next;
1170                        }
1171                        if ($filter ne '') {
1172                                # looking for forks;
1173                                my $pfx = substr($path, 0, length($filter));
1174                                if ($pfx ne $filter) {
1175                                        next PROJECT;
1176                                }
1177                                my $sfx = substr($path, length($filter));
1178                                if ($sfx !~ /^\/.*\.git$/) {
1179                                        next PROJECT;
1180                                }
1181                        } elsif ($check_forks) {
1182                        PATH:
1183                                foreach my $filter (keys %paths) {
1184                                        # looking for forks;
1185                                        my $pfx = substr($path, 0, length($filter));
1186                                        if ($pfx ne $filter) {
1187                                                next PATH;
1188                                        }
1189                                        my $sfx = substr($path, length($filter));
1190                                        if ($sfx !~ /^\/.*\.git$/) {
1191                                                next PATH;
1192                                        }
1193                                        # is a fork, don't include it in
1194                                        # the list
1195                                        next PROJECT;
1196                                }
1197                        }
1198                        if (check_export_ok("$projectroot/$path")) {
1199                                my $pr = {
1200                                        path => $path,
1201                                        owner => decode_utf8($owner),
1202                                };
1203                                push @list, $pr;
1204                                (my $forks_path = $path) =~ s/\.git$//;
1205                                $paths{$forks_path}++;
1206                        }
1207                }
1208                close $fd;
1209        }
1210        return @list;
1211}
1212
1213sub git_get_project_owner {
1214        my $project = shift;
1215        my $owner;
1216
1217        return undef unless $project;
1218
1219        # read from file (url-encoded):
1220        # 'git%2Fgit.git Linus+Torvalds'
1221        # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1222        # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1223        if (-f $projects_list) {
1224                open (my $fd , $projects_list);
1225                while (my $line = <$fd>) {
1226                        chomp $line;
1227                        my ($pr, $ow) = split ' ', $line;
1228                        $pr = unescape($pr);
1229                        $ow = unescape($ow);
1230                        if ($pr eq $project) {
1231                                $owner = decode_utf8($ow);
1232                                last;
1233                        }
1234                }
1235                close $fd;
1236        }
1237        if (!defined $owner) {
1238                $owner = get_file_owner("$projectroot/$project");
1239        }
1240
1241        return $owner;
1242}
1243
1244sub git_get_last_activity {
1245        my ($path) = @_;
1246        my $fd;
1247
1248        $git_dir = "$projectroot/$path";
1249        open($fd, "-|", git_cmd(), 'for-each-ref',
1250             '--format=%(committer)',
1251             '--sort=-committerdate',
1252             '--count=1',
1253             'refs/heads') or return;
1254        my $most_recent = <$fd>;
1255        close $fd or return;
1256        if ($most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1257                my $timestamp = $1;
1258                my $age = time - $timestamp;
1259                return ($age, age_string($age));
1260        }
1261}
1262
1263sub git_get_references {
1264        my $type = shift || "";
1265        my %refs;
1266        # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
1267        # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
1268        open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
1269                ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
1270                or return;
1271
1272        while (my $line = <$fd>) {
1273                chomp $line;
1274                if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type/?[^^]+)!) {
1275                        if (defined $refs{$1}) {
1276                                push @{$refs{$1}}, $2;
1277                        } else {
1278                                $refs{$1} = [ $2 ];
1279                        }
1280                }
1281        }
1282        close $fd or return;
1283        return \%refs;
1284}
1285
1286sub git_get_rev_name_tags {
1287        my $hash = shift || return undef;
1288
1289        open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1290                or return;
1291        my $name_rev = <$fd>;
1292        close $fd;
1293
1294        if ($name_rev =~ m|^$hash tags/(.*)$|) {
1295                return $1;
1296        } else {
1297                # catches also '$hash undefined' output
1298                return undef;
1299        }
1300}
1301
1302## ----------------------------------------------------------------------
1303## parse to hash functions
1304
1305sub parse_date {
1306        my $epoch = shift;
1307        my $tz = shift || "-0000";
1308
1309        my %date;
1310        my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1311        my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1312        my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1313        $date{'hour'} = $hour;
1314        $date{'minute'} = $min;
1315        $date{'mday'} = $mday;
1316        $date{'day'} = $days[$wday];
1317        $date{'month'} = $months[$mon];
1318        $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1319                             $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1320        $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1321                             $mday, $months[$mon], $hour ,$min;
1322        $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
1323                             1900+$year, $mon, $mday, $hour ,$min, $sec;
1324
1325        $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1326        my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1327        ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1328        $date{'hour_local'} = $hour;
1329        $date{'minute_local'} = $min;
1330        $date{'tz_local'} = $tz;
1331        $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
1332                                  1900+$year, $mon+1, $mday,
1333                                  $hour, $min, $sec, $tz);
1334        return %date;
1335}
1336
1337sub parse_tag {
1338        my $tag_id = shift;
1339        my %tag;
1340        my @comment;
1341
1342        open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1343        $tag{'id'} = $tag_id;
1344        while (my $line = <$fd>) {
1345                chomp $line;
1346                if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1347                        $tag{'object'} = $1;
1348                } elsif ($line =~ m/^type (.+)$/) {
1349                        $tag{'type'} = $1;
1350                } elsif ($line =~ m/^tag (.+)$/) {
1351                        $tag{'name'} = $1;
1352                } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1353                        $tag{'author'} = $1;
1354                        $tag{'epoch'} = $2;
1355                        $tag{'tz'} = $3;
1356                } elsif ($line =~ m/--BEGIN/) {
1357                        push @comment, $line;
1358                        last;
1359                } elsif ($line eq "") {
1360                        last;
1361                }
1362        }
1363        push @comment, <$fd>;
1364        $tag{'comment'} = \@comment;
1365        close $fd or return;
1366        if (!defined $tag{'name'}) {
1367                return
1368        };
1369        return %tag
1370}
1371
1372sub parse_commit_text {
1373        my ($commit_text, $withparents) = @_;
1374        my @commit_lines = split '\n', $commit_text;
1375        my %co;
1376
1377        pop @commit_lines; # Remove '\0'
1378
1379        my $header = shift @commit_lines;
1380        if (!($header =~ m/^[0-9a-fA-F]{40}/)) {
1381                return;
1382        }
1383        ($co{'id'}, my @parents) = split ' ', $header;
1384        while (my $line = shift @commit_lines) {
1385                last if $line eq "\n";
1386                if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1387                        $co{'tree'} = $1;
1388                } elsif ((!defined $withparents) && ($line =~ m/^parent ([0-9a-fA-F]{40})$/)) {
1389                        push @parents, $1;
1390                } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1391                        $co{'author'} = $1;
1392                        $co{'author_epoch'} = $2;
1393                        $co{'author_tz'} = $3;
1394                        if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
1395                                $co{'author_name'}  = $1;
1396                                $co{'author_email'} = $2;
1397                        } else {
1398                                $co{'author_name'} = $co{'author'};
1399                        }
1400                } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1401                        $co{'committer'} = $1;
1402                        $co{'committer_epoch'} = $2;
1403                        $co{'committer_tz'} = $3;
1404                        $co{'committer_name'} = $co{'committer'};
1405                        if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
1406                                $co{'committer_name'}  = $1;
1407                                $co{'committer_email'} = $2;
1408                        } else {
1409                                $co{'committer_name'} = $co{'committer'};
1410                        }
1411                }
1412        }
1413        if (!defined $co{'tree'}) {
1414                return;
1415        };
1416        $co{'parents'} = \@parents;
1417        $co{'parent'} = $parents[0];
1418
1419        foreach my $title (@commit_lines) {
1420                $title =~ s/^    //;
1421                if ($title ne "") {
1422                        $co{'title'} = chop_str($title, 80, 5);
1423                        # remove leading stuff of merges to make the interesting part visible
1424                        if (length($title) > 50) {
1425                                $title =~ s/^Automatic //;
1426                                $title =~ s/^merge (of|with) /Merge ... /i;
1427                                if (length($title) > 50) {
1428                                        $title =~ s/(http|rsync):\/\///;
1429                                }
1430                                if (length($title) > 50) {
1431                                        $title =~ s/(master|www|rsync)\.//;
1432                                }
1433                                if (length($title) > 50) {
1434                                        $title =~ s/kernel.org:?//;
1435                                }
1436                                if (length($title) > 50) {
1437                                        $title =~ s/\/pub\/scm//;
1438                                }
1439                        }
1440                        $co{'title_short'} = chop_str($title, 50, 5);
1441                        last;
1442                }
1443        }
1444        if ($co{'title'} eq "") {
1445                $co{'title'} = $co{'title_short'} = '(no commit message)';
1446        }
1447        # remove added spaces
1448        foreach my $line (@commit_lines) {
1449                $line =~ s/^    //;
1450        }
1451        $co{'comment'} = \@commit_lines;
1452
1453        my $age = time - $co{'committer_epoch'};
1454        $co{'age'} = $age;
1455        $co{'age_string'} = age_string($age);
1456        my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1457        if ($age > 60*60*24*7*2) {
1458                $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1459                $co{'age_string_age'} = $co{'age_string'};
1460        } else {
1461                $co{'age_string_date'} = $co{'age_string'};
1462                $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1463        }
1464        return %co;
1465}
1466
1467sub parse_commit {
1468        my ($commit_id) = @_;
1469        my %co;
1470
1471        local $/ = "\0";
1472
1473        open my $fd, "-|", git_cmd(), "rev-list",
1474                "--parents",
1475                "--header",
1476                "--max-count=1",
1477                $commit_id,
1478                "--",
1479                or die_error(undef, "Open git-rev-list failed");
1480        %co = parse_commit_text(<$fd>, 1);
1481        close $fd;
1482
1483        return %co;
1484}
1485
1486sub parse_commits {
1487        my ($commit_id, $maxcount, $skip, $arg, $filename) = @_;
1488        my @cos;
1489
1490        $maxcount ||= 1;
1491        $skip ||= 0;
1492
1493        local $/ = "\0";
1494
1495        open my $fd, "-|", git_cmd(), "rev-list",
1496                "--header",
1497                ($arg ? ($arg) : ()),
1498                ("--max-count=" . $maxcount),
1499                ("--skip=" . $skip),
1500                $commit_id,
1501                "--",
1502                ($filename ? ($filename) : ())
1503                or die_error(undef, "Open git-rev-list failed");
1504        while (my $line = <$fd>) {
1505                my %co = parse_commit_text($line);
1506                push @cos, \%co;
1507        }
1508        close $fd;
1509
1510        return wantarray ? @cos : \@cos;
1511}
1512
1513# parse ref from ref_file, given by ref_id, with given type
1514sub parse_ref {
1515        my $ref_file = shift;
1516        my $ref_id = shift;
1517        my $type = shift || git_get_type($ref_id);
1518        my %ref_item;
1519
1520        $ref_item{'type'} = $type;
1521        $ref_item{'id'} = $ref_id;
1522        $ref_item{'epoch'} = 0;
1523        $ref_item{'age'} = "unknown";
1524        if ($type eq "tag") {
1525                my %tag = parse_tag($ref_id);
1526                $ref_item{'comment'} = $tag{'comment'};
1527                if ($tag{'type'} eq "commit") {
1528                        my %co = parse_commit($tag{'object'});
1529                        $ref_item{'epoch'} = $co{'committer_epoch'};
1530                        $ref_item{'age'} = $co{'age_string'};
1531                } elsif (defined($tag{'epoch'})) {
1532                        my $age = time - $tag{'epoch'};
1533                        $ref_item{'epoch'} = $tag{'epoch'};
1534                        $ref_item{'age'} = age_string($age);
1535                }
1536                $ref_item{'reftype'} = $tag{'type'};
1537                $ref_item{'name'} = $tag{'name'};
1538                $ref_item{'refid'} = $tag{'object'};
1539        } elsif ($type eq "commit"){
1540                my %co = parse_commit($ref_id);
1541                $ref_item{'reftype'} = "commit";
1542                $ref_item{'name'} = $ref_file;
1543                $ref_item{'title'} = $co{'title'};
1544                $ref_item{'refid'} = $ref_id;
1545                $ref_item{'epoch'} = $co{'committer_epoch'};
1546                $ref_item{'age'} = $co{'age_string'};
1547        } else {
1548                $ref_item{'reftype'} = $type;
1549                $ref_item{'name'} = $ref_file;
1550                $ref_item{'refid'} = $ref_id;
1551        }
1552
1553        return %ref_item;
1554}
1555
1556# parse line of git-diff-tree "raw" output
1557sub parse_difftree_raw_line {
1558        my $line = shift;
1559        my %res;
1560
1561        # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1562        # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1563        if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1564                $res{'from_mode'} = $1;
1565                $res{'to_mode'} = $2;
1566                $res{'from_id'} = $3;
1567                $res{'to_id'} = $4;
1568                $res{'status'} = $5;
1569                $res{'similarity'} = $6;
1570                if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1571                        ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1572                } else {
1573                        $res{'file'} = unquote($7);
1574                }
1575        }
1576        # '::100755 100755 100755 60e79ca1b01bc8b057abe17ddab484699a7f5fdb 94067cc5f73388f33722d52ae02f44692bc07490 94067cc5f73388f33722d52ae02f44692bc07490 MR git-gui/git-gui.sh'
1577        # combined diff (for merge commit)
1578        elsif ($line =~ s/^(::+)((?:[0-7]{6} )+)((?:[0-9a-fA-F]{40} )+)([a-zA-Z]+)\t(.*)$//) {
1579                $res{'nparents'}  = length($1);
1580                $res{'from_mode'} = [ split(' ', $2) ];
1581                $res{'to_mode'} = pop @{$res{'from_mode'}};
1582                $res{'from_id'} = [ split(' ', $3) ];
1583                $res{'to_id'} = pop @{$res{'from_id'}};
1584                $res{'status'} = [ split('', $4) ];
1585                $res{'to_file'} = unquote($5);
1586        }
1587        # 'c512b523472485aef4fff9e57b229d9d243c967f'
1588        elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1589                $res{'commit'} = $1;
1590        }
1591
1592        return wantarray ? %res : \%res;
1593}
1594
1595# parse line of git-ls-tree output
1596sub parse_ls_tree_line ($;%) {
1597        my $line = shift;
1598        my %opts = @_;
1599        my %res;
1600
1601        #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1602        $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
1603
1604        $res{'mode'} = $1;
1605        $res{'type'} = $2;
1606        $res{'hash'} = $3;
1607        if ($opts{'-z'}) {
1608                $res{'name'} = $4;
1609        } else {
1610                $res{'name'} = unquote($4);
1611        }
1612
1613        return wantarray ? %res : \%res;
1614}
1615
1616## ......................................................................
1617## parse to array of hashes functions
1618
1619sub git_get_heads_list {
1620        my $limit = shift;
1621        my @headslist;
1622
1623        open my $fd, '-|', git_cmd(), 'for-each-ref',
1624                ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
1625                '--format=%(objectname) %(refname) %(subject)%00%(committer)',
1626                'refs/heads'
1627                or return;
1628        while (my $line = <$fd>) {
1629                my %ref_item;
1630
1631                chomp $line;
1632                my ($refinfo, $committerinfo) = split(/\0/, $line);
1633                my ($hash, $name, $title) = split(' ', $refinfo, 3);
1634                my ($committer, $epoch, $tz) =
1635                        ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
1636                $name =~ s!^refs/heads/!!;
1637
1638                $ref_item{'name'}  = $name;
1639                $ref_item{'id'}    = $hash;
1640                $ref_item{'title'} = $title || '(no commit message)';
1641                $ref_item{'epoch'} = $epoch;
1642                if ($epoch) {
1643                        $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1644                } else {
1645                        $ref_item{'age'} = "unknown";
1646                }
1647
1648                push @headslist, \%ref_item;
1649        }
1650        close $fd;
1651
1652        return wantarray ? @headslist : \@headslist;
1653}
1654
1655sub git_get_tags_list {
1656        my $limit = shift;
1657        my @tagslist;
1658
1659        open my $fd, '-|', git_cmd(), 'for-each-ref',
1660                ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
1661                '--format=%(objectname) %(objecttype) %(refname) '.
1662                '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
1663                'refs/tags'
1664                or return;
1665        while (my $line = <$fd>) {
1666                my %ref_item;
1667
1668                chomp $line;
1669                my ($refinfo, $creatorinfo) = split(/\0/, $line);
1670                my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
1671                my ($creator, $epoch, $tz) =
1672                        ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
1673                $name =~ s!^refs/tags/!!;
1674
1675                $ref_item{'type'} = $type;
1676                $ref_item{'id'} = $id;
1677                $ref_item{'name'} = $name;
1678                if ($type eq "tag") {
1679                        $ref_item{'subject'} = $title;
1680                        $ref_item{'reftype'} = $reftype;
1681                        $ref_item{'refid'}   = $refid;
1682                } else {
1683                        $ref_item{'reftype'} = $type;
1684                        $ref_item{'refid'}   = $id;
1685                }
1686
1687                if ($type eq "tag" || $type eq "commit") {
1688                        $ref_item{'epoch'} = $epoch;
1689                        if ($epoch) {
1690                                $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1691                        } else {
1692                                $ref_item{'age'} = "unknown";
1693                        }
1694                }
1695
1696                push @tagslist, \%ref_item;
1697        }
1698        close $fd;
1699
1700        return wantarray ? @tagslist : \@tagslist;
1701}
1702
1703## ----------------------------------------------------------------------
1704## filesystem-related functions
1705
1706sub get_file_owner {
1707        my $path = shift;
1708
1709        my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
1710        my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
1711        if (!defined $gcos) {
1712                return undef;
1713        }
1714        my $owner = $gcos;
1715        $owner =~ s/[,;].*$//;
1716        return decode_utf8($owner);
1717}
1718
1719## ......................................................................
1720## mimetype related functions
1721
1722sub mimetype_guess_file {
1723        my $filename = shift;
1724        my $mimemap = shift;
1725        -r $mimemap or return undef;
1726
1727        my %mimemap;
1728        open(MIME, $mimemap) or return undef;
1729        while (<MIME>) {
1730                next if m/^#/; # skip comments
1731                my ($mime, $exts) = split(/\t+/);
1732                if (defined $exts) {
1733                        my @exts = split(/\s+/, $exts);
1734                        foreach my $ext (@exts) {
1735                                $mimemap{$ext} = $mime;
1736                        }
1737                }
1738        }
1739        close(MIME);
1740
1741        $filename =~ /\.([^.]*)$/;
1742        return $mimemap{$1};
1743}
1744
1745sub mimetype_guess {
1746        my $filename = shift;
1747        my $mime;
1748        $filename =~ /\./ or return undef;
1749
1750        if ($mimetypes_file) {
1751                my $file = $mimetypes_file;
1752                if ($file !~ m!^/!) { # if it is relative path
1753                        # it is relative to project
1754                        $file = "$projectroot/$project/$file";
1755                }
1756                $mime = mimetype_guess_file($filename, $file);
1757        }
1758        $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
1759        return $mime;
1760}
1761
1762sub blob_mimetype {
1763        my $fd = shift;
1764        my $filename = shift;
1765
1766        if ($filename) {
1767                my $mime = mimetype_guess($filename);
1768                $mime and return $mime;
1769        }
1770
1771        # just in case
1772        return $default_blob_plain_mimetype unless $fd;
1773
1774        if (-T $fd) {
1775                return 'text/plain' .
1776                       ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
1777        } elsif (! $filename) {
1778                return 'application/octet-stream';
1779        } elsif ($filename =~ m/\.png$/i) {
1780                return 'image/png';
1781        } elsif ($filename =~ m/\.gif$/i) {
1782                return 'image/gif';
1783        } elsif ($filename =~ m/\.jpe?g$/i) {
1784                return 'image/jpeg';
1785        } else {
1786                return 'application/octet-stream';
1787        }
1788}
1789
1790## ======================================================================
1791## functions printing HTML: header, footer, error page
1792
1793sub git_header_html {
1794        my $status = shift || "200 OK";
1795        my $expires = shift;
1796
1797        my $title = "$site_name";
1798        if (defined $project) {
1799                $title .= " - " . decode_utf8($project);
1800                if (defined $action) {
1801                        $title .= "/$action";
1802                        if (defined $file_name) {
1803                                $title .= " - " . esc_path($file_name);
1804                                if ($action eq "tree" && $file_name !~ m|/$|) {
1805                                        $title .= "/";
1806                                }
1807                        }
1808                }
1809        }
1810        my $content_type;
1811        # require explicit support from the UA if we are to send the page as
1812        # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
1813        # we have to do this because MSIE sometimes globs '*/*', pretending to
1814        # support xhtml+xml but choking when it gets what it asked for.
1815        if (defined $cgi->http('HTTP_ACCEPT') &&
1816            $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
1817            $cgi->Accept('application/xhtml+xml') != 0) {
1818                $content_type = 'application/xhtml+xml';
1819        } else {
1820                $content_type = 'text/html';
1821        }
1822        print $cgi->header(-type=>$content_type, -charset => 'utf-8',
1823                           -status=> $status, -expires => $expires);
1824        my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
1825        print <<EOF;
1826<?xml version="1.0" encoding="utf-8"?>
1827<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
1828<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
1829<!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
1830<!-- git core binaries version $git_version -->
1831<head>
1832<meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
1833<meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
1834<meta name="robots" content="index, nofollow"/>
1835<title>$title</title>
1836EOF
1837# print out each stylesheet that exist
1838        if (defined $stylesheet) {
1839#provides backwards capability for those people who define style sheet in a config file
1840                print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1841        } else {
1842                foreach my $stylesheet (@stylesheets) {
1843                        next unless $stylesheet;
1844                        print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1845                }
1846        }
1847        if (defined $project) {
1848                printf('<link rel="alternate" title="%s log RSS feed" '.
1849                       'href="%s" type="application/rss+xml" />'."\n",
1850                       esc_param($project), href(action=>"rss"));
1851                printf('<link rel="alternate" title="%s log Atom feed" '.
1852                       'href="%s" type="application/atom+xml" />'."\n",
1853                       esc_param($project), href(action=>"atom"));
1854        } else {
1855                printf('<link rel="alternate" title="%s projects list" '.
1856                       'href="%s" type="text/plain; charset=utf-8"/>'."\n",
1857                       $site_name, href(project=>undef, action=>"project_index"));
1858                printf('<link rel="alternate" title="%s projects feeds" '.
1859                       'href="%s" type="text/x-opml"/>'."\n",
1860                       $site_name, href(project=>undef, action=>"opml"));
1861        }
1862        if (defined $favicon) {
1863                print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
1864        }
1865
1866        print "</head>\n" .
1867              "<body>\n";
1868
1869        if (-f $site_header) {
1870                open (my $fd, $site_header);
1871                print <$fd>;
1872                close $fd;
1873        }
1874
1875        print "<div class=\"page_header\">\n" .
1876              $cgi->a({-href => esc_url($logo_url),
1877                       -title => $logo_label},
1878                      qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
1879        print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
1880        if (defined $project) {
1881                print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
1882                if (defined $action) {
1883                        print " / $action";
1884                }
1885                print "\n";
1886        }
1887        my ($have_search) = gitweb_check_feature('search');
1888        if ((defined $project) && ($have_search)) {
1889                if (!defined $searchtext) {
1890                        $searchtext = "";
1891                }
1892                my $search_hash;
1893                if (defined $hash_base) {
1894                        $search_hash = $hash_base;
1895                } elsif (defined $hash) {
1896                        $search_hash = $hash;
1897                } else {
1898                        $search_hash = "HEAD";
1899                }
1900                $cgi->param("a", "search");
1901                $cgi->param("h", $search_hash);
1902                $cgi->param("p", $project);
1903                print $cgi->startform(-method => "get", -action => $my_uri) .
1904                      "<div class=\"search\">\n" .
1905                      $cgi->hidden(-name => "p") . "\n" .
1906                      $cgi->hidden(-name => "a") . "\n" .
1907                      $cgi->hidden(-name => "h") . "\n" .
1908                      $cgi->popup_menu(-name => 'st', -default => 'commit',
1909                                       -values => ['commit', 'author', 'committer', 'pickaxe']) .
1910                      $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
1911                      " search:\n",
1912                      $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1913                      "</div>" .
1914                      $cgi->end_form() . "\n";
1915        }
1916        print "</div>\n";
1917}
1918
1919sub git_footer_html {
1920        print "<div class=\"page_footer\">\n";
1921        if (defined $project) {
1922                my $descr = git_get_project_description($project);
1923                if (defined $descr) {
1924                        print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1925                }
1926                print $cgi->a({-href => href(action=>"rss"),
1927                              -class => "rss_logo"}, "RSS") . " ";
1928                print $cgi->a({-href => href(action=>"atom"),
1929                              -class => "rss_logo"}, "Atom") . "\n";
1930        } else {
1931                print $cgi->a({-href => href(project=>undef, action=>"opml"),
1932                              -class => "rss_logo"}, "OPML") . " ";
1933                print $cgi->a({-href => href(project=>undef, action=>"project_index"),
1934                              -class => "rss_logo"}, "TXT") . "\n";
1935        }
1936        print "</div>\n" ;
1937
1938        if (-f $site_footer) {
1939                open (my $fd, $site_footer);
1940                print <$fd>;
1941                close $fd;
1942        }
1943
1944        print "</body>\n" .
1945              "</html>";
1946}
1947
1948sub die_error {
1949        my $status = shift || "403 Forbidden";
1950        my $error = shift || "Malformed query, file missing or permission denied";
1951
1952        git_header_html($status);
1953        print <<EOF;
1954<div class="page_body">
1955<br /><br />
1956$status - $error
1957<br />
1958</div>
1959EOF
1960        git_footer_html();
1961        exit;
1962}
1963
1964## ----------------------------------------------------------------------
1965## functions printing or outputting HTML: navigation
1966
1967sub git_print_page_nav {
1968        my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
1969        $extra = '' if !defined $extra; # pager or formats
1970
1971        my @navs = qw(summary shortlog log commit commitdiff tree);
1972        if ($suppress) {
1973                @navs = grep { $_ ne $suppress } @navs;
1974        }
1975
1976        my %arg = map { $_ => {action=>$_} } @navs;
1977        if (defined $head) {
1978                for (qw(commit commitdiff)) {
1979                        $arg{$_}{'hash'} = $head;
1980                }
1981                if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
1982                        for (qw(shortlog log)) {
1983                                $arg{$_}{'hash'} = $head;
1984                        }
1985                }
1986        }
1987        $arg{'tree'}{'hash'} = $treehead if defined $treehead;
1988        $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
1989
1990        print "<div class=\"page_nav\">\n" .
1991                (join " | ",
1992                 map { $_ eq $current ?
1993                       $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
1994                 } @navs);
1995        print "<br/>\n$extra<br/>\n" .
1996              "</div>\n";
1997}
1998
1999sub format_paging_nav {
2000        my ($action, $hash, $head, $page, $nrevs) = @_;
2001        my $paging_nav;
2002
2003
2004        if ($hash ne $head || $page) {
2005                $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
2006        } else {
2007                $paging_nav .= "HEAD";
2008        }
2009
2010        if ($page > 0) {
2011                $paging_nav .= " &sdot; " .
2012                        $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
2013                                 -accesskey => "p", -title => "Alt-p"}, "prev");
2014        } else {
2015                $paging_nav .= " &sdot; prev";
2016        }
2017
2018        if ($nrevs >= (100 * ($page+1)-1)) {
2019                $paging_nav .= " &sdot; " .
2020                        $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
2021                                 -accesskey => "n", -title => "Alt-n"}, "next");
2022        } else {
2023                $paging_nav .= " &sdot; next";
2024        }
2025
2026        return $paging_nav;
2027}
2028
2029## ......................................................................
2030## functions printing or outputting HTML: div
2031
2032sub git_print_header_div {
2033        my ($action, $title, $hash, $hash_base) = @_;
2034        my %args = ();
2035
2036        $args{'action'} = $action;
2037        $args{'hash'} = $hash if $hash;
2038        $args{'hash_base'} = $hash_base if $hash_base;
2039
2040        print "<div class=\"header\">\n" .
2041              $cgi->a({-href => href(%args), -class => "title"},
2042              $title ? $title : $action) .
2043              "\n</div>\n";
2044}
2045
2046#sub git_print_authorship (\%) {
2047sub git_print_authorship {
2048        my $co = shift;
2049
2050        my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
2051        print "<div class=\"author_date\">" .
2052              esc_html($co->{'author_name'}) .
2053              " [$ad{'rfc2822'}";
2054        if ($ad{'hour_local'} < 6) {
2055                printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
2056                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2057        } else {
2058                printf(" (%02d:%02d %s)",
2059                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2060        }
2061        print "]</div>\n";
2062}
2063
2064sub git_print_page_path {
2065        my $name = shift;
2066        my $type = shift;
2067        my $hb = shift;
2068
2069
2070        print "<div class=\"page_path\">";
2071        print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
2072                      -title => 'tree root'}, decode_utf8("[$project]"));
2073        print " / ";
2074        if (defined $name) {
2075                my @dirname = split '/', $name;
2076                my $basename = pop @dirname;
2077                my $fullname = '';
2078
2079                foreach my $dir (@dirname) {
2080                        $fullname .= ($fullname ? '/' : '') . $dir;
2081                        print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
2082                                                     hash_base=>$hb),
2083                                      -title => $fullname}, esc_path($dir));
2084                        print " / ";
2085                }
2086                if (defined $type && $type eq 'blob') {
2087                        print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
2088                                                     hash_base=>$hb),
2089                                      -title => $name}, esc_path($basename));
2090                } elsif (defined $type && $type eq 'tree') {
2091                        print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
2092                                                     hash_base=>$hb),
2093                                      -title => $name}, esc_path($basename));
2094                        print " / ";
2095                } else {
2096                        print esc_path($basename);
2097                }
2098        }
2099        print "<br/></div>\n";
2100}
2101
2102# sub git_print_log (\@;%) {
2103sub git_print_log ($;%) {
2104        my $log = shift;
2105        my %opts = @_;
2106
2107        if ($opts{'-remove_title'}) {
2108                # remove title, i.e. first line of log
2109                shift @$log;
2110        }
2111        # remove leading empty lines
2112        while (defined $log->[0] && $log->[0] eq "") {
2113                shift @$log;
2114        }
2115
2116        # print log
2117        my $signoff = 0;
2118        my $empty = 0;
2119        foreach my $line (@$log) {
2120                if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2121                        $signoff = 1;
2122                        $empty = 0;
2123                        if (! $opts{'-remove_signoff'}) {
2124                                print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
2125                                next;
2126                        } else {
2127                                # remove signoff lines
2128                                next;
2129                        }
2130                } else {
2131                        $signoff = 0;
2132                }
2133
2134                # print only one empty line
2135                # do not print empty line after signoff
2136                if ($line eq "") {
2137                        next if ($empty || $signoff);
2138                        $empty = 1;
2139                } else {
2140                        $empty = 0;
2141                }
2142
2143                print format_log_line_html($line) . "<br/>\n";
2144        }
2145
2146        if ($opts{'-final_empty_line'}) {
2147                # end with single empty line
2148                print "<br/>\n" unless $empty;
2149        }
2150}
2151
2152# return link target (what link points to)
2153sub git_get_link_target {
2154        my $hash = shift;
2155        my $link_target;
2156
2157        # read link
2158        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2159                or return;
2160        {
2161                local $/;
2162                $link_target = <$fd>;
2163        }
2164        close $fd
2165                or return;
2166
2167        return $link_target;
2168}
2169
2170# given link target, and the directory (basedir) the link is in,
2171# return target of link relative to top directory (top tree);
2172# return undef if it is not possible (including absolute links).
2173sub normalize_link_target {
2174        my ($link_target, $basedir, $hash_base) = @_;
2175
2176        # we can normalize symlink target only if $hash_base is provided
2177        return unless $hash_base;
2178
2179        # absolute symlinks (beginning with '/') cannot be normalized
2180        return if (substr($link_target, 0, 1) eq '/');
2181
2182        # normalize link target to path from top (root) tree (dir)
2183        my $path;
2184        if ($basedir) {
2185                $path = $basedir . '/' . $link_target;
2186        } else {
2187                # we are in top (root) tree (dir)
2188                $path = $link_target;
2189        }
2190
2191        # remove //, /./, and /../
2192        my @path_parts;
2193        foreach my $part (split('/', $path)) {
2194                # discard '.' and ''
2195                next if (!$part || $part eq '.');
2196                # handle '..'
2197                if ($part eq '..') {
2198                        if (@path_parts) {
2199                                pop @path_parts;
2200                        } else {
2201                                # link leads outside repository (outside top dir)
2202                                return;
2203                        }
2204                } else {
2205                        push @path_parts, $part;
2206                }
2207        }
2208        $path = join('/', @path_parts);
2209
2210        return $path;
2211}
2212
2213# print tree entry (row of git_tree), but without encompassing <tr> element
2214sub git_print_tree_entry {
2215        my ($t, $basedir, $hash_base, $have_blame) = @_;
2216
2217        my %base_key = ();
2218        $base_key{'hash_base'} = $hash_base if defined $hash_base;
2219
2220        # The format of a table row is: mode list link.  Where mode is
2221        # the mode of the entry, list is the name of the entry, an href,
2222        # and link is the action links of the entry.
2223
2224        print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
2225        if ($t->{'type'} eq "blob") {
2226                print "<td class=\"list\">" .
2227                        $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2228                                               file_name=>"$basedir$t->{'name'}", %base_key),
2229                                -class => "list"}, esc_path($t->{'name'}));
2230                if (S_ISLNK(oct $t->{'mode'})) {
2231                        my $link_target = git_get_link_target($t->{'hash'});
2232                        if ($link_target) {
2233                                my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
2234                                if (defined $norm_target) {
2235                                        print " -> " .
2236                                              $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
2237                                                                     file_name=>$norm_target),
2238                                                       -title => $norm_target}, esc_path($link_target));
2239                                } else {
2240                                        print " -> " . esc_path($link_target);
2241                                }
2242                        }
2243                }
2244                print "</td>\n";
2245                print "<td class=\"link\">";
2246                print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2247                                             file_name=>"$basedir$t->{'name'}", %base_key)},
2248                              "blob");
2249                if ($have_blame) {
2250                        print " | " .
2251                              $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
2252                                                     file_name=>"$basedir$t->{'name'}", %base_key)},
2253                                      "blame");
2254                }
2255                if (defined $hash_base) {
2256                        print " | " .
2257                              $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2258                                                     hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
2259                                      "history");
2260                }
2261                print " | " .
2262                        $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
2263                                               file_name=>"$basedir$t->{'name'}")},
2264                                "raw");
2265                print "</td>\n";
2266
2267        } elsif ($t->{'type'} eq "tree") {
2268                print "<td class=\"list\">";
2269                print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2270                                             file_name=>"$basedir$t->{'name'}", %base_key)},
2271                              esc_path($t->{'name'}));
2272                print "</td>\n";
2273                print "<td class=\"link\">";
2274                print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2275                                             file_name=>"$basedir$t->{'name'}", %base_key)},
2276                              "tree");
2277                if (defined $hash_base) {
2278                        print " | " .
2279                              $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2280                                                     file_name=>"$basedir$t->{'name'}")},
2281                                      "history");
2282                }
2283                print "</td>\n";
2284        }
2285}
2286
2287## ......................................................................
2288## functions printing large fragments of HTML
2289
2290sub fill_from_file_info {
2291        my ($diff, @parents) = @_;
2292
2293        $diff->{'from_file'} = [ ];
2294        $diff->{'from_file'}[$diff->{'nparents'} - 1] = undef;
2295        for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2296                if ($diff->{'status'}[$i] eq 'R' ||
2297                    $diff->{'status'}[$i] eq 'C') {
2298                        $diff->{'from_file'}[$i] =
2299                                git_get_path_by_hash($parents[$i], $diff->{'from_id'}[$i]);
2300                }
2301        }
2302
2303        return $diff;
2304}
2305
2306# parameters can be strings, or references to arrays of strings
2307sub from_ids_eq {
2308        my ($a, $b) = @_;
2309
2310        if (ref($a) eq "ARRAY" && ref($b) eq "ARRAY" && @$a == @$b) {
2311                for (my $i = 0; $i < @$a; ++$i) {
2312                        return 0 unless ($a->[$i] eq $b->[$i]);
2313                }
2314                return 1;
2315        } elsif (!ref($a) && !ref($b)) {
2316                return $a eq $b;
2317        } else {
2318                return 0;
2319        }
2320}
2321
2322
2323sub git_difftree_body {
2324        my ($difftree, $hash, @parents) = @_;
2325        my ($parent) = $parents[0];
2326        my ($have_blame) = gitweb_check_feature('blame');
2327        print "<div class=\"list_head\">\n";
2328        if ($#{$difftree} > 10) {
2329                print(($#{$difftree} + 1) . " files changed:\n");
2330        }
2331        print "</div>\n";
2332
2333        print "<table class=\"" .
2334              (@parents > 1 ? "combined " : "") .
2335              "diff_tree\">\n";
2336        my $alternate = 1;
2337        my $patchno = 0;
2338        foreach my $line (@{$difftree}) {
2339                my $diff;
2340                if (ref($line) eq "HASH") {
2341                        # pre-parsed (or generated by hand)
2342                        $diff = $line;
2343                } else {
2344                        $diff = parse_difftree_raw_line($line);
2345                }
2346
2347                if ($alternate) {
2348                        print "<tr class=\"dark\">\n";
2349                } else {
2350                        print "<tr class=\"light\">\n";
2351                }
2352                $alternate ^= 1;
2353
2354                if (exists $diff->{'nparents'}) { # combined diff
2355
2356                        fill_from_file_info($diff, @parents)
2357                                unless exists $diff->{'from_file'};
2358
2359                        if ($diff->{'to_id'} ne ('0' x 40)) {
2360                                # file exists in the result (child) commit
2361                                print "<td>" .
2362                                      $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2363                                                             file_name=>$diff->{'to_file'},
2364                                                             hash_base=>$hash),
2365                                              -class => "list"}, esc_path($diff->{'to_file'})) .
2366                                      "</td>\n";
2367                        } else {
2368                                print "<td>" .
2369                                      esc_path($diff->{'to_file'}) .
2370                                      "</td>\n";
2371                        }
2372
2373                        if ($action eq 'commitdiff') {
2374                                # link to patch
2375                                $patchno++;
2376                                print "<td class=\"link\">" .
2377                                      $cgi->a({-href => "#patch$patchno"}, "patch") .
2378                                      " | " .
2379                                      "</td>\n";
2380                        }
2381
2382                        my $has_history = 0;
2383                        my $not_deleted = 0;
2384                        for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2385                                my $hash_parent = $parents[$i];
2386                                my $from_hash = $diff->{'from_id'}[$i];
2387                                my $from_path = $diff->{'from_file'}[$i];
2388                                my $status = $diff->{'status'}[$i];
2389
2390                                $has_history ||= ($status ne 'A');
2391                                $not_deleted ||= ($status ne 'D');
2392
2393                                if ($status eq 'A') {
2394                                        print "<td  class=\"link\" align=\"right\"> | </td>\n";
2395                                } elsif ($status eq 'D') {
2396                                        print "<td class=\"link\">" .
2397                                              $cgi->a({-href => href(action=>"blob",
2398                                                                     hash_base=>$hash,
2399                                                                     hash=>$from_hash,
2400                                                                     file_name=>$from_path)},
2401                                                      "blob" . ($i+1)) .
2402                                              " | </td>\n";
2403                                } else {
2404                                        if ($diff->{'to_id'} eq $from_hash) {
2405                                                print "<td class=\"link nochange\">";
2406                                        } else {
2407                                                print "<td class=\"link\">";
2408                                        }
2409                                        print $cgi->a({-href => href(action=>"blobdiff",
2410                                                                     hash=>$diff->{'to_id'},
2411                                                                     hash_parent=>$from_hash,
2412                                                                     hash_base=>$hash,
2413                                                                     hash_parent_base=>$hash_parent,
2414                                                                     file_name=>$diff->{'to_file'},
2415                                                                     file_parent=>$from_path)},
2416                                                      "diff" . ($i+1)) .
2417                                              " | </td>\n";
2418                                }
2419                        }
2420
2421                        print "<td class=\"link\">";
2422                        if ($not_deleted) {
2423                                print $cgi->a({-href => href(action=>"blob",
2424                                                             hash=>$diff->{'to_id'},
2425                                                             file_name=>$diff->{'to_file'},
2426                                                             hash_base=>$hash)},
2427                                              "blob");
2428                                print " | " if ($has_history);
2429                        }
2430                        if ($has_history) {
2431                                print $cgi->a({-href => href(action=>"history",
2432                                                             file_name=>$diff->{'to_file'},
2433                                                             hash_base=>$hash)},
2434                                              "history");
2435                        }
2436                        print "</td>\n";
2437
2438                        print "</tr>\n";
2439                        next; # instead of 'else' clause, to avoid extra indent
2440                }
2441                # else ordinary diff
2442
2443                my ($to_mode_oct, $to_mode_str, $to_file_type);
2444                my ($from_mode_oct, $from_mode_str, $from_file_type);
2445                if ($diff->{'to_mode'} ne ('0' x 6)) {
2446                        $to_mode_oct = oct $diff->{'to_mode'};
2447                        if (S_ISREG($to_mode_oct)) { # only for regular file
2448                                $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
2449                        }
2450                        $to_file_type = file_type($diff->{'to_mode'});
2451                }
2452                if ($diff->{'from_mode'} ne ('0' x 6)) {
2453                        $from_mode_oct = oct $diff->{'from_mode'};
2454                        if (S_ISREG($to_mode_oct)) { # only for regular file
2455                                $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
2456                        }
2457                        $from_file_type = file_type($diff->{'from_mode'});
2458                }
2459
2460                if ($diff->{'status'} eq "A") { # created
2461                        my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
2462                        $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
2463                        $mode_chng   .= "]</span>";
2464                        print "<td>";
2465                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2466                                                     hash_base=>$hash, file_name=>$diff->{'file'}),
2467                                      -class => "list"}, esc_path($diff->{'file'}));
2468                        print "</td>\n";
2469                        print "<td>$mode_chng</td>\n";
2470                        print "<td class=\"link\">";
2471                        if ($action eq 'commitdiff') {
2472                                # link to patch
2473                                $patchno++;
2474                                print $cgi->a({-href => "#patch$patchno"}, "patch");
2475                                print " | ";
2476                        }
2477                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2478                                                     hash_base=>$hash, file_name=>$diff->{'file'})},
2479                                      "blob");
2480                        print "</td>\n";
2481
2482                } elsif ($diff->{'status'} eq "D") { # deleted
2483                        my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
2484                        print "<td>";
2485                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
2486                                                     hash_base=>$parent, file_name=>$diff->{'file'}),
2487                                       -class => "list"}, esc_path($diff->{'file'}));
2488                        print "</td>\n";
2489                        print "<td>$mode_chng</td>\n";
2490                        print "<td class=\"link\">";
2491                        if ($action eq 'commitdiff') {
2492                                # link to patch
2493                                $patchno++;
2494                                print $cgi->a({-href => "#patch$patchno"}, "patch");
2495                                print " | ";
2496                        }
2497                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
2498                                                     hash_base=>$parent, file_name=>$diff->{'file'})},
2499                                      "blob") . " | ";
2500                        if ($have_blame) {
2501                                print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
2502                                                             file_name=>$diff->{'file'})},
2503                                              "blame") . " | ";
2504                        }
2505                        print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
2506                                                     file_name=>$diff->{'file'})},
2507                                      "history");
2508                        print "</td>\n";
2509
2510                } elsif ($diff->{'status'} eq "M" || $diff->{'status'} eq "T") { # modified, or type changed
2511                        my $mode_chnge = "";
2512                        if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
2513                                $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
2514                                if ($from_file_type ne $to_file_type) {
2515                                        $mode_chnge .= " from $from_file_type to $to_file_type";
2516                                }
2517                                if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
2518                                        if ($from_mode_str && $to_mode_str) {
2519                                                $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
2520                                        } elsif ($to_mode_str) {
2521                                                $mode_chnge .= " mode: $to_mode_str";
2522                                        }
2523                                }
2524                                $mode_chnge .= "]</span>\n";
2525                        }
2526                        print "<td>";
2527                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2528                                                     hash_base=>$hash, file_name=>$diff->{'file'}),
2529                                      -class => "list"}, esc_path($diff->{'file'}));
2530                        print "</td>\n";
2531                        print "<td>$mode_chnge</td>\n";
2532                        print "<td class=\"link\">";
2533                        if ($action eq 'commitdiff') {
2534                                # link to patch
2535                                $patchno++;
2536                                print $cgi->a({-href => "#patch$patchno"}, "patch") .
2537                                      " | ";
2538                        } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
2539                                # "commit" view and modified file (not onlu mode changed)
2540                                print $cgi->a({-href => href(action=>"blobdiff",
2541                                                             hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
2542                                                             hash_base=>$hash, hash_parent_base=>$parent,
2543                                                             file_name=>$diff->{'file'})},
2544                                              "diff") .
2545                                      " | ";
2546                        }
2547                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2548                                                     hash_base=>$hash, file_name=>$diff->{'file'})},
2549                                       "blob") . " | ";
2550                        if ($have_blame) {
2551                                print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2552                                                             file_name=>$diff->{'file'})},
2553                                              "blame") . " | ";
2554                        }
2555                        print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2556                                                     file_name=>$diff->{'file'})},
2557                                      "history");
2558                        print "</td>\n";
2559
2560                } elsif ($diff->{'status'} eq "R" || $diff->{'status'} eq "C") { # renamed or copied
2561                        my %status_name = ('R' => 'moved', 'C' => 'copied');
2562                        my $nstatus = $status_name{$diff->{'status'}};
2563                        my $mode_chng = "";
2564                        if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
2565                                # mode also for directories, so we cannot use $to_mode_str
2566                                $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
2567                        }
2568                        print "<td>" .
2569                              $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2570                                                     hash=>$diff->{'to_id'}, file_name=>$diff->{'to_file'}),
2571                                      -class => "list"}, esc_path($diff->{'to_file'})) . "</td>\n" .
2572                              "<td><span class=\"file_status $nstatus\">[$nstatus from " .
2573                              $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
2574                                                     hash=>$diff->{'from_id'}, file_name=>$diff->{'from_file'}),
2575                                      -class => "list"}, esc_path($diff->{'from_file'})) .
2576                              " with " . (int $diff->{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
2577                              "<td class=\"link\">";
2578                        if ($action eq 'commitdiff') {
2579                                # link to patch
2580                                $patchno++;
2581                                print $cgi->a({-href => "#patch$patchno"}, "patch") .
2582                                      " | ";
2583                        } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
2584                                # "commit" view and modified file (not only pure rename or copy)
2585                                print $cgi->a({-href => href(action=>"blobdiff",
2586                                                             hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
2587                                                             hash_base=>$hash, hash_parent_base=>$parent,
2588                                                             file_name=>$diff->{'to_file'}, file_parent=>$diff->{'from_file'})},
2589                                              "diff") .
2590                                      " | ";
2591                        }
2592                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2593                                                     hash_base=>$parent, file_name=>$diff->{'to_file'})},
2594                                      "blob") . " | ";
2595                        if ($have_blame) {
2596                                print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2597                                                             file_name=>$diff->{'to_file'})},
2598                                              "blame") . " | ";
2599                        }
2600                        print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2601                                                    file_name=>$diff->{'to_file'})},
2602                                      "history");
2603                        print "</td>\n";
2604
2605                } # we should not encounter Unmerged (U) or Unknown (X) status
2606                print "</tr>\n";
2607        }
2608        print "</table>\n";
2609}
2610
2611sub git_patchset_body {
2612        my ($fd, $difftree, $hash, @hash_parents) = @_;
2613        my ($hash_parent) = $hash_parents[0];
2614
2615        my $patch_idx = 0;
2616        my $patch_number = 0;
2617        my $patch_line;
2618        my $diffinfo;
2619        my (%from, %to);
2620
2621        print "<div class=\"patchset\">\n";
2622
2623        # skip to first patch
2624        while ($patch_line = <$fd>) {
2625                chomp $patch_line;
2626
2627                last if ($patch_line =~ m/^diff /);
2628        }
2629
2630 PATCH:
2631        while ($patch_line) {
2632                my @diff_header;
2633                my ($from_id, $to_id);
2634
2635                # git diff header
2636                #assert($patch_line =~ m/^diff /) if DEBUG;
2637                #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
2638                $patch_number++;
2639                push @diff_header, $patch_line;
2640
2641                # extended diff header
2642        EXTENDED_HEADER:
2643                while ($patch_line = <$fd>) {
2644                        chomp $patch_line;
2645
2646                        last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
2647
2648                        if ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
2649                                $from_id = $1;
2650                                $to_id   = $2;
2651                        } elsif ($patch_line =~ m/^index ((?:[0-9a-fA-F]{40},)+[0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
2652                                $from_id = [ split(',', $1) ];
2653                                $to_id   = $2;
2654                        }
2655
2656                        push @diff_header, $patch_line;
2657                }
2658                my $last_patch_line = $patch_line;
2659
2660                # check if current patch belong to current raw line
2661                # and parse raw git-diff line if needed
2662                if (defined $diffinfo &&
2663                    from_ids_eq($diffinfo->{'from_id'}, $from_id) &&
2664                    $diffinfo->{'to_id'} eq $to_id) {
2665                        # this is split patch
2666                        print "<div class=\"patch cont\">\n";
2667                } else {
2668                        # advance raw git-diff output if needed
2669                        $patch_idx++ if defined $diffinfo;
2670
2671                        # read and prepare patch information
2672                        if (ref($difftree->[$patch_idx]) eq "HASH") {
2673                                # pre-parsed (or generated by hand)
2674                                $diffinfo = $difftree->[$patch_idx];
2675                        } else {
2676                                $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
2677                        }
2678                        if ($diffinfo->{'nparents'}) {
2679                                # combined diff
2680                                $from{'file'} = [];
2681                                $from{'href'} = [];
2682                                fill_from_file_info($diffinfo, @hash_parents)
2683                                        unless exists $diffinfo->{'from_file'};
2684                                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2685                                        $from{'file'}[$i] = $diffinfo->{'from_file'}[$i] || $diffinfo->{'to_file'};
2686                                        if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
2687                                                $from{'href'}[$i] = href(action=>"blob",
2688                                                                         hash_base=>$hash_parents[$i],
2689                                                                         hash=>$diffinfo->{'from_id'}[$i],
2690                                                                         file_name=>$from{'file'}[$i]);
2691                                        } else {
2692                                                $from{'href'}[$i] = undef;
2693                                        }
2694                                }
2695                        } else {
2696                                $from{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
2697                                if ($diffinfo->{'status'} ne "A") { # not new (added) file
2698                                        $from{'href'} = href(action=>"blob", hash_base=>$hash_parent,
2699                                                             hash=>$diffinfo->{'from_id'},
2700                                                             file_name=>$from{'file'});
2701                                } else {
2702                                        delete $from{'href'};
2703                                }
2704                        }
2705                        $to{'file'} = $diffinfo->{'to_file'} || $diffinfo->{'file'};
2706                        if ($diffinfo->{'status'} ne "D") { # not deleted file
2707                                $to{'href'} = href(action=>"blob", hash_base=>$hash,
2708                                                   hash=>$diffinfo->{'to_id'},
2709                                                   file_name=>$to{'file'});
2710                        } else {
2711                                delete $to{'href'};
2712                        }
2713                        # this is first patch for raw difftree line with $patch_idx index
2714                        # we index @$difftree array from 0, but number patches from 1
2715                        print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
2716                }
2717
2718                # print "git diff" header
2719                $patch_line = shift @diff_header;
2720                if ($diffinfo->{'nparents'}) {
2721
2722                        # combined diff
2723                        $patch_line =~ s!^(diff (.*?) )"?.*$!$1!;
2724                        if ($to{'href'}) {
2725                                $patch_line .= $cgi->a({-href => $to{'href'}, -class => "path"},
2726                                                       esc_path($to{'file'}));
2727                        } else { # file was deleted
2728                                $patch_line .= esc_path($to{'file'});
2729                        }
2730
2731                } else {
2732
2733                        $patch_line =~ s!^(diff (.*?) )"?a/.*$!$1!;
2734                        if ($from{'href'}) {
2735                                $patch_line .= $cgi->a({-href => $from{'href'}, -class => "path"},
2736                                                       'a/' . esc_path($from{'file'}));
2737                        } else { # file was added
2738                                $patch_line .= 'a/' . esc_path($from{'file'});
2739                        }
2740                        $patch_line .= ' ';
2741                        if ($to{'href'}) {
2742                                $patch_line .= $cgi->a({-href => $to{'href'}, -class => "path"},
2743                                                       'b/' . esc_path($to{'file'}));
2744                        } else { # file was deleted
2745                                $patch_line .= 'b/' . esc_path($to{'file'});
2746                        }
2747
2748                }
2749                print "<div class=\"diff header\">$patch_line</div>\n";
2750
2751                # print extended diff header
2752                print "<div class=\"diff extended_header\">\n" if (@diff_header > 0);
2753        EXTENDED_HEADER:
2754                foreach $patch_line (@diff_header) {
2755                        # match <path>
2756                        if ($patch_line =~ s!^((copy|rename) from ).*$!$1! && $from{'href'}) {
2757                                $patch_line .= $cgi->a({-href=>$from{'href'}, -class=>"path"},
2758                                                       esc_path($from{'file'}));
2759                        }
2760                        if ($patch_line =~ s!^((copy|rename) to ).*$!$1! && $to{'href'}) {
2761                                $patch_line .= $cgi->a({-href=>$to{'href'}, -class=>"path"},
2762                                                       esc_path($to{'file'}));
2763                        }
2764                        # match single <mode>
2765                        if ($patch_line =~ m/\s(\d{6})$/) {
2766                                $patch_line .= '<span class="info"> (' .
2767                                               file_type_long($1) .
2768                                               ')</span>';
2769                        }
2770                        # match <hash>
2771                        if ($patch_line =~ m/^index [0-9a-fA-F]{40},[0-9a-fA-F]{40}/) {
2772                                # can match only for combined diff
2773                                $patch_line = 'index ';
2774                                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2775                                        if ($from{'href'}[$i]) {
2776                                                $patch_line .= $cgi->a({-href=>$from{'href'}[$i],
2777                                                                        -class=>"hash"},
2778                                                                       substr($diffinfo->{'from_id'}[$i],0,7));
2779                                        } else {
2780                                                $patch_line .= '0' x 7;
2781                                        }
2782                                        # separator
2783                                        $patch_line .= ',' if ($i < $diffinfo->{'nparents'} - 1);
2784                                }
2785                                $patch_line .= '..';
2786                                if ($to{'href'}) {
2787                                        $patch_line .= $cgi->a({-href=>$to{'href'}, -class=>"hash"},
2788                                                               substr($diffinfo->{'to_id'},0,7));
2789                                } else {
2790                                        $patch_line .= '0' x 7;
2791                                }
2792
2793                        } elsif ($patch_line =~ m/^index [0-9a-fA-F]{40}..[0-9a-fA-F]{40}/) {
2794                                # can match only for ordinary diff
2795                                my ($from_link, $to_link);
2796                                if ($from{'href'}) {
2797                                        $from_link = $cgi->a({-href=>$from{'href'}, -class=>"hash"},
2798                                                             substr($diffinfo->{'from_id'},0,7));
2799                                } else {
2800                                        $from_link = '0' x 7;
2801                                }
2802                                if ($to{'href'}) {
2803                                        $to_link = $cgi->a({-href=>$to{'href'}, -class=>"hash"},
2804                                                           substr($diffinfo->{'to_id'},0,7));
2805                                } else {
2806                                        $to_link = '0' x 7;
2807                                }
2808                                #affirm {
2809                                #       my ($from_hash, $to_hash) =
2810                                #               ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/);
2811                                #       my ($from_id, $to_id) =
2812                                #               ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2813                                #       ($from_hash eq $from_id) && ($to_hash eq $to_id);
2814                                #} if DEBUG;
2815                                my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2816                                $patch_line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
2817                        }
2818                        print $patch_line . "<br/>\n";
2819                }
2820                print "</div>\n"  if (@diff_header > 0); # class="diff extended_header"
2821
2822                # from-file/to-file diff header
2823                $patch_line = $last_patch_line;
2824                if (! $patch_line) {
2825                        print "</div>\n"; # class="patch"
2826                        last PATCH;
2827                }
2828                next PATCH if ($patch_line =~ m/^diff /);
2829                #assert($patch_line =~ m/^---/) if DEBUG;
2830                if (!$diffinfo->{'nparents'} && # not from-file line for combined diff
2831                    $from{'href'} && $patch_line =~ m!^--- "?a/!) {
2832                        $patch_line = '--- a/' .
2833                                      $cgi->a({-href=>$from{'href'}, -class=>"path"},
2834                                              esc_path($from{'file'}));
2835                }
2836                print "<div class=\"diff from_file\">$patch_line</div>\n";
2837
2838                $patch_line = <$fd>;
2839                chomp $patch_line;
2840
2841                #assert($patch_line =~ m/^+++/) if DEBUG;
2842                if ($to{'href'} && $patch_line =~ m!^\+\+\+ "?b/!) {
2843                        $patch_line = '+++ b/' .
2844                                      $cgi->a({-href=>$to{'href'}, -class=>"path"},
2845                                              esc_path($to{'file'}));
2846                }
2847                print "<div class=\"diff to_file\">$patch_line</div>\n";
2848
2849                # the patch itself
2850        LINE:
2851                while ($patch_line = <$fd>) {
2852                        chomp $patch_line;
2853
2854                        next PATCH if ($patch_line =~ m/^diff /);
2855
2856                        print format_diff_line($patch_line, \%from, \%to);
2857                }
2858
2859        } continue {
2860                print "</div>\n"; # class="patch"
2861        }
2862        print "<div class=\"diff nodifferences\">No differences found</div>\n" if (!$patch_number);
2863
2864        print "</div>\n"; # class="patchset"
2865}
2866
2867# . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2868
2869sub git_project_list_body {
2870        my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
2871
2872        my ($check_forks) = gitweb_check_feature('forks');
2873
2874        my @projects;
2875        foreach my $pr (@$projlist) {
2876                my (@aa) = git_get_last_activity($pr->{'path'});
2877                unless (@aa) {
2878                        next;
2879                }
2880                ($pr->{'age'}, $pr->{'age_string'}) = @aa;
2881                if (!defined $pr->{'descr'}) {
2882                        my $descr = git_get_project_description($pr->{'path'}) || "";
2883                        $pr->{'descr_long'} = decode_utf8($descr);
2884                        $pr->{'descr'} = chop_str($descr, 25, 5);
2885                }
2886                if (!defined $pr->{'owner'}) {
2887                        $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
2888                }
2889                if ($check_forks) {
2890                        my $pname = $pr->{'path'};
2891                        if (($pname =~ s/\.git$//) &&
2892                            ($pname !~ /\/$/) &&
2893                            (-d "$projectroot/$pname")) {
2894                                $pr->{'forks'} = "-d $projectroot/$pname";
2895                        }
2896                        else {
2897                                $pr->{'forks'} = 0;
2898                        }
2899                }
2900                push @projects, $pr;
2901        }
2902
2903        $order ||= $default_projects_order;
2904        $from = 0 unless defined $from;
2905        $to = $#projects if (!defined $to || $#projects < $to);
2906
2907        print "<table class=\"project_list\">\n";
2908        unless ($no_header) {
2909                print "<tr>\n";
2910                if ($check_forks) {
2911                        print "<th></th>\n";
2912                }
2913                if ($order eq "project") {
2914                        @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
2915                        print "<th>Project</th>\n";
2916                } else {
2917                        print "<th>" .
2918                              $cgi->a({-href => href(project=>undef, order=>'project'),
2919                                       -class => "header"}, "Project") .
2920                              "</th>\n";
2921                }
2922                if ($order eq "descr") {
2923                        @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
2924                        print "<th>Description</th>\n";
2925                } else {
2926                        print "<th>" .
2927                              $cgi->a({-href => href(project=>undef, order=>'descr'),
2928                                       -class => "header"}, "Description") .
2929                              "</th>\n";
2930                }
2931                if ($order eq "owner") {
2932                        @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
2933                        print "<th>Owner</th>\n";
2934                } else {
2935                        print "<th>" .
2936                              $cgi->a({-href => href(project=>undef, order=>'owner'),
2937                                       -class => "header"}, "Owner") .
2938                              "</th>\n";
2939                }
2940                if ($order eq "age") {
2941                        @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
2942                        print "<th>Last Change</th>\n";
2943                } else {
2944                        print "<th>" .
2945                              $cgi->a({-href => href(project=>undef, order=>'age'),
2946                                       -class => "header"}, "Last Change") .
2947                              "</th>\n";
2948                }
2949                print "<th></th>\n" .
2950                      "</tr>\n";
2951        }
2952        my $alternate = 1;
2953        for (my $i = $from; $i <= $to; $i++) {
2954                my $pr = $projects[$i];
2955                if ($alternate) {
2956                        print "<tr class=\"dark\">\n";
2957                } else {
2958                        print "<tr class=\"light\">\n";
2959                }
2960                $alternate ^= 1;
2961                if ($check_forks) {
2962                        print "<td>";
2963                        if ($pr->{'forks'}) {
2964                                print "<!-- $pr->{'forks'} -->\n";
2965                                print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
2966                        }
2967                        print "</td>\n";
2968                }
2969                print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2970                                        -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
2971                      "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2972                                        -class => "list", -title => $pr->{'descr_long'}},
2973                                        esc_html($pr->{'descr'})) . "</td>\n" .
2974                      "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
2975                print "<td class=\"". age_class($pr->{'age'}) . "\">" .
2976                      $pr->{'age_string'} . "</td>\n" .
2977                      "<td class=\"link\">" .
2978                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
2979                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
2980                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
2981                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
2982                      ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
2983                      "</td>\n" .
2984                      "</tr>\n";
2985        }
2986        if (defined $extra) {
2987                print "<tr>\n";
2988                if ($check_forks) {
2989                        print "<td></td>\n";
2990                }
2991                print "<td colspan=\"5\">$extra</td>\n" .
2992                      "</tr>\n";
2993        }
2994        print "</table>\n";
2995}
2996
2997sub git_shortlog_body {
2998        # uses global variable $project
2999        my ($commitlist, $from, $to, $refs, $extra) = @_;
3000
3001        my $have_snapshot = gitweb_have_snapshot();
3002
3003        $from = 0 unless defined $from;
3004        $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3005
3006        print "<table class=\"shortlog\" cellspacing=\"0\">\n";
3007        my $alternate = 1;
3008        for (my $i = $from; $i <= $to; $i++) {
3009                my %co = %{$commitlist->[$i]};
3010                my $commit = $co{'id'};
3011                my $ref = format_ref_marker($refs, $commit);
3012                if ($alternate) {
3013                        print "<tr class=\"dark\">\n";
3014                } else {
3015                        print "<tr class=\"light\">\n";
3016                }
3017                $alternate ^= 1;
3018                # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
3019                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3020                      "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
3021                      "<td>";
3022                print format_subject_html($co{'title'}, $co{'title_short'},
3023                                          href(action=>"commit", hash=>$commit), $ref);
3024                print "</td>\n" .
3025                      "<td class=\"link\">" .
3026                      $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
3027                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
3028                      $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
3029                if ($have_snapshot) {
3030                        print " | " . $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
3031                }
3032                print "</td>\n" .
3033                      "</tr>\n";
3034        }
3035        if (defined $extra) {
3036                print "<tr>\n" .
3037                      "<td colspan=\"4\">$extra</td>\n" .
3038                      "</tr>\n";
3039        }
3040        print "</table>\n";
3041}
3042
3043sub git_history_body {
3044        # Warning: assumes constant type (blob or tree) during history
3045        my ($commitlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
3046
3047        $from = 0 unless defined $from;
3048        $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
3049
3050        print "<table class=\"history\" cellspacing=\"0\">\n";
3051        my $alternate = 1;
3052        for (my $i = $from; $i <= $to; $i++) {
3053                my %co = %{$commitlist->[$i]};
3054                if (!%co) {
3055                        next;
3056                }
3057                my $commit = $co{'id'};
3058
3059                my $ref = format_ref_marker($refs, $commit);
3060
3061                if ($alternate) {
3062                        print "<tr class=\"dark\">\n";
3063                } else {
3064                        print "<tr class=\"light\">\n";
3065                }
3066                $alternate ^= 1;
3067                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3068                      # shortlog uses      chop_str($co{'author_name'}, 10)
3069                      "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
3070                      "<td>";
3071                # originally git_history used chop_str($co{'title'}, 50)
3072                print format_subject_html($co{'title'}, $co{'title_short'},
3073                                          href(action=>"commit", hash=>$commit), $ref);
3074                print "</td>\n" .
3075                      "<td class=\"link\">" .
3076                      $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
3077                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
3078
3079                if ($ftype eq 'blob') {
3080                        my $blob_current = git_get_hash_by_path($hash_base, $file_name);
3081                        my $blob_parent  = git_get_hash_by_path($commit, $file_name);
3082                        if (defined $blob_current && defined $blob_parent &&
3083                                        $blob_current ne $blob_parent) {
3084                                print " | " .
3085                                        $cgi->a({-href => href(action=>"blobdiff",
3086                                                               hash=>$blob_current, hash_parent=>$blob_parent,
3087                                                               hash_base=>$hash_base, hash_parent_base=>$commit,
3088                                                               file_name=>$file_name)},
3089                                                "diff to current");
3090                        }
3091                }
3092                print "</td>\n" .
3093                      "</tr>\n";
3094        }
3095        if (defined $extra) {
3096                print "<tr>\n" .
3097                      "<td colspan=\"4\">$extra</td>\n" .
3098                      "</tr>\n";
3099        }
3100        print "</table>\n";
3101}
3102
3103sub git_tags_body {
3104        # uses global variable $project
3105        my ($taglist, $from, $to, $extra) = @_;
3106        $from = 0 unless defined $from;
3107        $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
3108
3109        print "<table class=\"tags\" cellspacing=\"0\">\n";
3110        my $alternate = 1;
3111        for (my $i = $from; $i <= $to; $i++) {
3112                my $entry = $taglist->[$i];
3113                my %tag = %$entry;
3114                my $comment = $tag{'subject'};
3115                my $comment_short;
3116                if (defined $comment) {
3117                        $comment_short = chop_str($comment, 30, 5);
3118                }
3119                if ($alternate) {
3120                        print "<tr class=\"dark\">\n";
3121                } else {
3122                        print "<tr class=\"light\">\n";
3123                }
3124                $alternate ^= 1;
3125                if (defined $tag{'age'}) {
3126                        print "<td><i>$tag{'age'}</i></td>\n";
3127                } else {
3128                        print "<td></td>\n";
3129                }
3130                print "<td>" .
3131                      $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
3132                               -class => "list name"}, esc_html($tag{'name'})) .
3133                      "</td>\n" .
3134                      "<td>";
3135                if (defined $comment) {
3136                        print format_subject_html($comment, $comment_short,
3137                                                  href(action=>"tag", hash=>$tag{'id'}));
3138                }
3139                print "</td>\n" .
3140                      "<td class=\"selflink\">";
3141                if ($tag{'type'} eq "tag") {
3142                        print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
3143                } else {
3144                        print "&nbsp;";
3145                }
3146                print "</td>\n" .
3147                      "<td class=\"link\">" . " | " .
3148                      $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
3149                if ($tag{'reftype'} eq "commit") {
3150                        print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
3151                              " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log");
3152                } elsif ($tag{'reftype'} eq "blob") {
3153                        print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
3154                }
3155                print "</td>\n" .
3156                      "</tr>";
3157        }
3158        if (defined $extra) {
3159                print "<tr>\n" .
3160                      "<td colspan=\"5\">$extra</td>\n" .
3161                      "</tr>\n";
3162        }
3163        print "</table>\n";
3164}
3165
3166sub git_heads_body {
3167        # uses global variable $project
3168        my ($headlist, $head, $from, $to, $extra) = @_;
3169        $from = 0 unless defined $from;
3170        $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
3171
3172        print "<table class=\"heads\" cellspacing=\"0\">\n";
3173        my $alternate = 1;
3174        for (my $i = $from; $i <= $to; $i++) {
3175                my $entry = $headlist->[$i];
3176                my %ref = %$entry;
3177                my $curr = $ref{'id'} eq $head;
3178                if ($alternate) {
3179                        print "<tr class=\"dark\">\n";
3180                } else {
3181                        print "<tr class=\"light\">\n";
3182                }
3183                $alternate ^= 1;
3184                print "<td><i>$ref{'age'}</i></td>\n" .
3185                      ($curr ? "<td class=\"current_head\">" : "<td>") .
3186                      $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'}),
3187                               -class => "list name"},esc_html($ref{'name'})) .
3188                      "</td>\n" .
3189                      "<td class=\"link\">" .
3190                      $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'})}, "shortlog") . " | " .
3191                      $cgi->a({-href => href(action=>"log", hash=>$ref{'name'})}, "log") . " | " .
3192                      $cgi->a({-href => href(action=>"tree", hash=>$ref{'name'}, hash_base=>$ref{'name'})}, "tree") .
3193                      "</td>\n" .
3194                      "</tr>";
3195        }
3196        if (defined $extra) {
3197                print "<tr>\n" .
3198                      "<td colspan=\"3\">$extra</td>\n" .
3199                      "</tr>\n";
3200        }
3201        print "</table>\n";
3202}
3203
3204sub git_search_grep_body {
3205        my ($commitlist, $from, $to, $extra) = @_;
3206        $from = 0 unless defined $from;
3207        $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3208
3209        print "<table class=\"grep\" cellspacing=\"0\">\n";
3210        my $alternate = 1;
3211        for (my $i = $from; $i <= $to; $i++) {
3212                my %co = %{$commitlist->[$i]};
3213                if (!%co) {
3214                        next;
3215                }
3216                my $commit = $co{'id'};
3217                if ($alternate) {
3218                        print "<tr class=\"dark\">\n";
3219                } else {
3220                        print "<tr class=\"light\">\n";
3221                }
3222                $alternate ^= 1;
3223                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3224                      "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3225                      "<td>" .
3226                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3227                               esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3228                my $comment = $co{'comment'};
3229                foreach my $line (@$comment) {
3230                        if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
3231                                my $lead = esc_html($1) || "";
3232                                $lead = chop_str($lead, 30, 10);
3233                                my $match = esc_html($2) || "";
3234                                my $trail = esc_html($3) || "";
3235                                $trail = chop_str($trail, 30, 10);
3236                                my $text = "$lead<span class=\"match\">$match</span>$trail";
3237                                print chop_str($text, 80, 5) . "<br/>\n";
3238                        }
3239                }
3240                print "</td>\n" .
3241                      "<td class=\"link\">" .
3242                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3243                      " | " .
3244                      $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3245                print "</td>\n" .
3246                      "</tr>\n";
3247        }
3248        if (defined $extra) {
3249                print "<tr>\n" .
3250                      "<td colspan=\"3\">$extra</td>\n" .
3251                      "</tr>\n";
3252        }
3253        print "</table>\n";
3254}
3255
3256## ======================================================================
3257## ======================================================================
3258## actions
3259
3260sub git_project_list {
3261        my $order = $cgi->param('o');
3262        if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3263                die_error(undef, "Unknown order parameter");
3264        }
3265
3266        my @list = git_get_projects_list();
3267        if (!@list) {
3268                die_error(undef, "No projects found");
3269        }
3270
3271        git_header_html();
3272        if (-f $home_text) {
3273                print "<div class=\"index_include\">\n";
3274                open (my $fd, $home_text);
3275                print <$fd>;
3276                close $fd;
3277                print "</div>\n";
3278        }
3279        git_project_list_body(\@list, $order);
3280        git_footer_html();
3281}
3282
3283sub git_forks {
3284        my $order = $cgi->param('o');
3285        if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3286                die_error(undef, "Unknown order parameter");
3287        }
3288
3289        my @list = git_get_projects_list($project);
3290        if (!@list) {
3291                die_error(undef, "No forks found");
3292        }
3293
3294        git_header_html();
3295        git_print_page_nav('','');
3296        git_print_header_div('summary', "$project forks");
3297        git_project_list_body(\@list, $order);
3298        git_footer_html();
3299}
3300
3301sub git_project_index {
3302        my @projects = git_get_projects_list($project);
3303
3304        print $cgi->header(
3305                -type => 'text/plain',
3306                -charset => 'utf-8',
3307                -content_disposition => 'inline; filename="index.aux"');
3308
3309        foreach my $pr (@projects) {
3310                if (!exists $pr->{'owner'}) {
3311                        $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}");
3312                }
3313
3314                my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
3315                # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
3316                $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3317                $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3318                $path  =~ s/ /\+/g;
3319                $owner =~ s/ /\+/g;
3320
3321                print "$path $owner\n";
3322        }
3323}
3324
3325sub git_summary {
3326        my $descr = git_get_project_description($project) || "none";
3327        my %co = parse_commit("HEAD");
3328        my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
3329        my $head = $co{'id'};
3330
3331        my $owner = git_get_project_owner($project);
3332
3333        my $refs = git_get_references();
3334        # These get_*_list functions return one more to allow us to see if
3335        # there are more ...
3336        my @taglist  = git_get_tags_list(16);
3337        my @headlist = git_get_heads_list(16);
3338        my @forklist;
3339        my ($check_forks) = gitweb_check_feature('forks');
3340
3341        if ($check_forks) {
3342                @forklist = git_get_projects_list($project);
3343        }
3344
3345        git_header_html();
3346        git_print_page_nav('summary','', $head);
3347
3348        print "<div class=\"title\">&nbsp;</div>\n";
3349        print "<table cellspacing=\"0\">\n" .
3350              "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
3351              "<tr><td>owner</td><td>$owner</td></tr>\n" .
3352              "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
3353        # use per project git URL list in $projectroot/$project/cloneurl
3354        # or make project git URL from git base URL and project name
3355        my $url_tag = "URL";
3356        my @url_list = git_get_project_url_list($project);
3357        @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
3358        foreach my $git_url (@url_list) {
3359                next unless $git_url;
3360                print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
3361                $url_tag = "";
3362        }
3363        print "</table>\n";
3364
3365        if (-s "$projectroot/$project/README.html") {
3366                if (open my $fd, "$projectroot/$project/README.html") {
3367                        print "<div class=\"title\">readme</div>\n";
3368                        print $_ while (<$fd>);
3369                        close $fd;
3370                }
3371        }
3372
3373        # we need to request one more than 16 (0..15) to check if
3374        # those 16 are all
3375        my @commitlist = parse_commits($head, 17);
3376        git_print_header_div('shortlog');
3377        git_shortlog_body(\@commitlist, 0, 15, $refs,
3378                          $#commitlist <=  15 ? undef :
3379                          $cgi->a({-href => href(action=>"shortlog")}, "..."));
3380
3381        if (@taglist) {
3382                git_print_header_div('tags');
3383                git_tags_body(\@taglist, 0, 15,
3384                              $#taglist <=  15 ? undef :
3385                              $cgi->a({-href => href(action=>"tags")}, "..."));
3386        }
3387
3388        if (@headlist) {
3389                git_print_header_div('heads');
3390                git_heads_body(\@headlist, $head, 0, 15,
3391                               $#headlist <= 15 ? undef :
3392                               $cgi->a({-href => href(action=>"heads")}, "..."));
3393        }
3394
3395        if (@forklist) {
3396                git_print_header_div('forks');
3397                git_project_list_body(\@forklist, undef, 0, 15,
3398                                      $#forklist <= 15 ? undef :
3399                                      $cgi->a({-href => href(action=>"forks")}, "..."),
3400                                      'noheader');
3401        }
3402
3403        git_footer_html();
3404}
3405
3406sub git_tag {
3407        my $head = git_get_head_hash($project);
3408        git_header_html();
3409        git_print_page_nav('','', $head,undef,$head);
3410        my %tag = parse_tag($hash);
3411        git_print_header_div('commit', esc_html($tag{'name'}), $hash);
3412        print "<div class=\"title_text\">\n" .
3413              "<table cellspacing=\"0\">\n" .
3414              "<tr>\n" .
3415              "<td>object</td>\n" .
3416              "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3417                               $tag{'object'}) . "</td>\n" .
3418              "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3419                                              $tag{'type'}) . "</td>\n" .
3420              "</tr>\n";
3421        if (defined($tag{'author'})) {
3422                my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
3423                print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
3424                print "<tr><td></td><td>" . $ad{'rfc2822'} .
3425                        sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
3426                        "</td></tr>\n";
3427        }
3428        print "</table>\n\n" .
3429              "</div>\n";
3430        print "<div class=\"page_body\">";
3431        my $comment = $tag{'comment'};
3432        foreach my $line (@$comment) {
3433                chomp $line;
3434                print esc_html($line, -nbsp=>1) . "<br/>\n";
3435        }
3436        print "</div>\n";
3437        git_footer_html();
3438}
3439
3440sub git_blame2 {
3441        my $fd;
3442        my $ftype;
3443
3444        my ($have_blame) = gitweb_check_feature('blame');
3445        if (!$have_blame) {
3446                die_error('403 Permission denied', "Permission denied");
3447        }
3448        die_error('404 Not Found', "File name not defined") if (!$file_name);
3449        $hash_base ||= git_get_head_hash($project);
3450        die_error(undef, "Couldn't find base commit") unless ($hash_base);
3451        my %co = parse_commit($hash_base)
3452                or die_error(undef, "Reading commit failed");
3453        if (!defined $hash) {
3454                $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3455                        or die_error(undef, "Error looking up file");
3456        }
3457        $ftype = git_get_type($hash);
3458        if ($ftype !~ "blob") {
3459                die_error('400 Bad Request', "Object is not a blob");
3460        }
3461        open ($fd, "-|", git_cmd(), "blame", '-p', '--',
3462              $file_name, $hash_base)
3463                or die_error(undef, "Open git-blame failed");
3464        git_header_html();
3465        my $formats_nav =
3466                $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3467                        "blob") .
3468                " | " .
3469                $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3470                        "history") .
3471                " | " .
3472                $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3473                        "HEAD");
3474        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3475        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3476        git_print_page_path($file_name, $ftype, $hash_base);
3477        my @rev_color = (qw(light2 dark2));
3478        my $num_colors = scalar(@rev_color);
3479        my $current_color = 0;
3480        my $last_rev;
3481        print <<HTML;
3482<div class="page_body">
3483<table class="blame">
3484<tr><th>Commit</th><th>Line</th><th>Data</th></tr>
3485HTML
3486        my %metainfo = ();
3487        while (1) {
3488                $_ = <$fd>;
3489                last unless defined $_;
3490                my ($full_rev, $orig_lineno, $lineno, $group_size) =
3491                    /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
3492                if (!exists $metainfo{$full_rev}) {
3493                        $metainfo{$full_rev} = {};
3494                }
3495                my $meta = $metainfo{$full_rev};
3496                while (<$fd>) {
3497                        last if (s/^\t//);
3498                        if (/^(\S+) (.*)$/) {
3499                                $meta->{$1} = $2;
3500                        }
3501                }
3502                my $data = $_;
3503                chomp $data;
3504                my $rev = substr($full_rev, 0, 8);
3505                my $author = $meta->{'author'};
3506                my %date = parse_date($meta->{'author-time'},
3507                                      $meta->{'author-tz'});
3508                my $date = $date{'iso-tz'};
3509                if ($group_size) {
3510                        $current_color = ++$current_color % $num_colors;
3511                }
3512                print "<tr class=\"$rev_color[$current_color]\">\n";
3513                if ($group_size) {
3514                        print "<td class=\"sha1\"";
3515                        print " title=\"". esc_html($author) . ", $date\"";
3516                        print " rowspan=\"$group_size\"" if ($group_size > 1);
3517                        print ">";
3518                        print $cgi->a({-href => href(action=>"commit",
3519                                                     hash=>$full_rev,
3520                                                     file_name=>$file_name)},
3521                                      esc_html($rev));
3522                        print "</td>\n";
3523                }
3524                open (my $dd, "-|", git_cmd(), "rev-parse", "$full_rev^")
3525                        or die_error(undef, "Open git-rev-parse failed");
3526                my $parent_commit = <$dd>;
3527                close $dd;
3528                chomp($parent_commit);
3529                my $blamed = href(action => 'blame',
3530                                  file_name => $meta->{'filename'},
3531                                  hash_base => $parent_commit);
3532                print "<td class=\"linenr\">";
3533                print $cgi->a({ -href => "$blamed#l$orig_lineno",
3534                                -id => "l$lineno",
3535                                -class => "linenr" },
3536                              esc_html($lineno));
3537                print "</td>";
3538                print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
3539                print "</tr>\n";
3540        }
3541        print "</table>\n";
3542        print "</div>";
3543        close $fd
3544                or print "Reading blob failed\n";
3545        git_footer_html();
3546}
3547
3548sub git_blame {
3549        my $fd;
3550
3551        my ($have_blame) = gitweb_check_feature('blame');
3552        if (!$have_blame) {
3553                die_error('403 Permission denied', "Permission denied");
3554        }
3555        die_error('404 Not Found', "File name not defined") if (!$file_name);
3556        $hash_base ||= git_get_head_hash($project);
3557        die_error(undef, "Couldn't find base commit") unless ($hash_base);
3558        my %co = parse_commit($hash_base)
3559                or die_error(undef, "Reading commit failed");
3560        if (!defined $hash) {
3561                $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3562                        or die_error(undef, "Error lookup file");
3563        }
3564        open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
3565                or die_error(undef, "Open git-annotate failed");
3566        git_header_html();
3567        my $formats_nav =
3568                $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3569                        "blob") .
3570                " | " .
3571                $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3572                        "history") .
3573                " | " .
3574                $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3575                        "HEAD");
3576        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3577        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3578        git_print_page_path($file_name, 'blob', $hash_base);
3579        print "<div class=\"page_body\">\n";
3580        print <<HTML;
3581<table class="blame">
3582  <tr>
3583    <th>Commit</th>
3584    <th>Age</th>
3585    <th>Author</th>
3586    <th>Line</th>
3587    <th>Data</th>
3588  </tr>
3589HTML
3590        my @line_class = (qw(light dark));
3591        my $line_class_len = scalar (@line_class);
3592        my $line_class_num = $#line_class;
3593        while (my $line = <$fd>) {
3594                my $long_rev;
3595                my $short_rev;
3596                my $author;
3597                my $time;
3598                my $lineno;
3599                my $data;
3600                my $age;
3601                my $age_str;
3602                my $age_class;
3603
3604                chomp $line;
3605                $line_class_num = ($line_class_num + 1) % $line_class_len;
3606
3607                if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
3608                        $long_rev = $1;
3609                        $author   = $2;
3610                        $time     = $3;
3611                        $lineno   = $4;
3612                        $data     = $5;
3613                } else {
3614                        print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
3615                        next;
3616                }
3617                $short_rev  = substr ($long_rev, 0, 8);
3618                $age        = time () - $time;
3619                $age_str    = age_string ($age);
3620                $age_str    =~ s/ /&nbsp;/g;
3621                $age_class  = age_class($age);
3622                $author     = esc_html ($author);
3623                $author     =~ s/ /&nbsp;/g;
3624
3625                $data = untabify($data);
3626                $data = esc_html ($data);
3627
3628                print <<HTML;
3629  <tr class="$line_class[$line_class_num]">
3630    <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
3631    <td class="$age_class">$age_str</td>
3632    <td>$author</td>
3633    <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
3634    <td class="pre">$data</td>
3635  </tr>
3636HTML
3637        } # while (my $line = <$fd>)
3638        print "</table>\n\n";
3639        close $fd
3640                or print "Reading blob failed.\n";
3641        print "</div>";
3642        git_footer_html();
3643}
3644
3645sub git_tags {
3646        my $head = git_get_head_hash($project);
3647        git_header_html();
3648        git_print_page_nav('','', $head,undef,$head);
3649        git_print_header_div('summary', $project);
3650
3651        my @tagslist = git_get_tags_list();
3652        if (@tagslist) {
3653                git_tags_body(\@tagslist);
3654        }
3655        git_footer_html();
3656}
3657
3658sub git_heads {
3659        my $head = git_get_head_hash($project);
3660        git_header_html();
3661        git_print_page_nav('','', $head,undef,$head);
3662        git_print_header_div('summary', $project);
3663
3664        my @headslist = git_get_heads_list();
3665        if (@headslist) {
3666                git_heads_body(\@headslist, $head);
3667        }
3668        git_footer_html();
3669}
3670
3671sub git_blob_plain {
3672        my $expires;
3673
3674        if (!defined $hash) {
3675                if (defined $file_name) {
3676                        my $base = $hash_base || git_get_head_hash($project);
3677                        $hash = git_get_hash_by_path($base, $file_name, "blob")
3678                                or die_error(undef, "Error lookup file");
3679                } else {
3680                        die_error(undef, "No file name defined");
3681                }
3682        } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3683                # blobs defined by non-textual hash id's can be cached
3684                $expires = "+1d";
3685        }
3686
3687        my $type = shift;
3688        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3689                or die_error(undef, "Couldn't cat $file_name, $hash");
3690
3691        $type ||= blob_mimetype($fd, $file_name);
3692
3693        # save as filename, even when no $file_name is given
3694        my $save_as = "$hash";
3695        if (defined $file_name) {
3696                $save_as = $file_name;
3697        } elsif ($type =~ m/^text\//) {
3698                $save_as .= '.txt';
3699        }
3700
3701        print $cgi->header(
3702                -type => "$type",
3703                -expires=>$expires,
3704                -content_disposition => 'inline; filename="' . "$save_as" . '"');
3705        undef $/;
3706        binmode STDOUT, ':raw';
3707        print <$fd>;
3708        binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3709        $/ = "\n";
3710        close $fd;
3711}
3712
3713sub git_blob {
3714        my $expires;
3715
3716        if (!defined $hash) {
3717                if (defined $file_name) {
3718                        my $base = $hash_base || git_get_head_hash($project);
3719                        $hash = git_get_hash_by_path($base, $file_name, "blob")
3720                                or die_error(undef, "Error lookup file");
3721                } else {
3722                        die_error(undef, "No file name defined");
3723                }
3724        } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3725                # blobs defined by non-textual hash id's can be cached
3726                $expires = "+1d";
3727        }
3728
3729        my ($have_blame) = gitweb_check_feature('blame');
3730        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3731                or die_error(undef, "Couldn't cat $file_name, $hash");
3732        my $mimetype = blob_mimetype($fd, $file_name);
3733        if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)!) {
3734                close $fd;
3735                return git_blob_plain($mimetype);
3736        }
3737        # we can have blame only for text/* mimetype
3738        $have_blame &&= ($mimetype =~ m!^text/!);
3739
3740        git_header_html(undef, $expires);
3741        my $formats_nav = '';
3742        if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3743                if (defined $file_name) {
3744                        if ($have_blame) {
3745                                $formats_nav .=
3746                                        $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
3747                                                               hash=>$hash, file_name=>$file_name)},
3748                                                "blame") .
3749                                        " | ";
3750                        }
3751                        $formats_nav .=
3752                                $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3753                                                       hash=>$hash, file_name=>$file_name)},
3754                                        "history") .
3755                                " | " .
3756                                $cgi->a({-href => href(action=>"blob_plain",
3757                                                       hash=>$hash, file_name=>$file_name)},
3758                                        "raw") .
3759                                " | " .
3760                                $cgi->a({-href => href(action=>"blob",
3761                                                       hash_base=>"HEAD", file_name=>$file_name)},
3762                                        "HEAD");
3763                } else {
3764                        $formats_nav .=
3765                                $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
3766                }
3767                git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3768                git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3769        } else {
3770                print "<div class=\"page_nav\">\n" .
3771                      "<br/><br/></div>\n" .
3772                      "<div class=\"title\">$hash</div>\n";
3773        }
3774        git_print_page_path($file_name, "blob", $hash_base);
3775        print "<div class=\"page_body\">\n";
3776        if ($mimetype =~ m!^text/!) {
3777                my $nr;
3778                while (my $line = <$fd>) {
3779                        chomp $line;
3780                        $nr++;
3781                        $line = untabify($line);
3782                        printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
3783                               $nr, $nr, $nr, esc_html($line, -nbsp=>1);
3784                }
3785        } elsif ($mimetype =~ m!^image/!) {
3786                print qq!<img type="$mimetype"!;
3787                if ($file_name) {
3788                        print qq! alt="$file_name" title="$file_name"!;
3789                }
3790                print qq! src="! .
3791                      href(action=>"blob_plain", hash=>$hash,
3792                           hash_base=>$hash_base, file_name=>$file_name) .
3793                      qq!" />\n!;
3794        }
3795        close $fd
3796                or print "Reading blob failed.\n";
3797        print "</div>";
3798        git_footer_html();
3799}
3800
3801sub git_tree {
3802        my $have_snapshot = gitweb_have_snapshot();
3803
3804        if (!defined $hash_base) {
3805                $hash_base = "HEAD";
3806        }
3807        if (!defined $hash) {
3808                if (defined $file_name) {
3809                        $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
3810                } else {
3811                        $hash = $hash_base;
3812                }
3813        }
3814        $/ = "\0";
3815        open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
3816                or die_error(undef, "Open git-ls-tree failed");
3817        my @entries = map { chomp; $_ } <$fd>;
3818        close $fd or die_error(undef, "Reading tree failed");
3819        $/ = "\n";
3820
3821        my $refs = git_get_references();
3822        my $ref = format_ref_marker($refs, $hash_base);
3823        git_header_html();
3824        my $basedir = '';
3825        my ($have_blame) = gitweb_check_feature('blame');
3826        if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3827                my @views_nav = ();
3828                if (defined $file_name) {
3829                        push @views_nav,
3830                                $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3831                                                       hash=>$hash, file_name=>$file_name)},
3832                                        "history"),
3833                                $cgi->a({-href => href(action=>"tree",
3834                                                       hash_base=>"HEAD", file_name=>$file_name)},
3835                                        "HEAD"),
3836                }
3837                if ($have_snapshot) {
3838                        # FIXME: Should be available when we have no hash base as well.
3839                        push @views_nav,
3840                                $cgi->a({-href => href(action=>"snapshot", hash=>$hash)},
3841                                        "snapshot");
3842                }
3843                git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
3844                git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
3845        } else {
3846                undef $hash_base;
3847                print "<div class=\"page_nav\">\n";
3848                print "<br/><br/></div>\n";
3849                print "<div class=\"title\">$hash</div>\n";
3850        }
3851        if (defined $file_name) {
3852                $basedir = $file_name;
3853                if ($basedir ne '' && substr($basedir, -1) ne '/') {
3854                        $basedir .= '/';
3855                }
3856        }
3857        git_print_page_path($file_name, 'tree', $hash_base);
3858        print "<div class=\"page_body\">\n";
3859        print "<table cellspacing=\"0\">\n";
3860        my $alternate = 1;
3861        # '..' (top directory) link if possible
3862        if (defined $hash_base &&
3863            defined $file_name && $file_name =~ m![^/]+$!) {
3864                if ($alternate) {
3865                        print "<tr class=\"dark\">\n";
3866                } else {
3867                        print "<tr class=\"light\">\n";
3868                }
3869                $alternate ^= 1;
3870
3871                my $up = $file_name;
3872                $up =~ s!/?[^/]+$!!;
3873                undef $up unless $up;
3874                # based on git_print_tree_entry
3875                print '<td class="mode">' . mode_str('040000') . "</td>\n";
3876                print '<td class="list">';
3877                print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
3878                                             file_name=>$up)},
3879                              "..");
3880                print "</td>\n";
3881                print "<td class=\"link\"></td>\n";
3882
3883                print "</tr>\n";
3884        }
3885        foreach my $line (@entries) {
3886                my %t = parse_ls_tree_line($line, -z => 1);
3887
3888                if ($alternate) {
3889                        print "<tr class=\"dark\">\n";
3890                } else {
3891                        print "<tr class=\"light\">\n";
3892                }
3893                $alternate ^= 1;
3894
3895                git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
3896
3897                print "</tr>\n";
3898        }
3899        print "</table>\n" .
3900              "</div>";
3901        git_footer_html();
3902}
3903
3904sub git_snapshot {
3905        my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
3906        my $have_snapshot = (defined $ctype && defined $suffix);
3907        if (!$have_snapshot) {
3908                die_error('403 Permission denied', "Permission denied");
3909        }
3910
3911        if (!defined $hash) {
3912                $hash = git_get_head_hash($project);
3913        }
3914
3915        my $filename = decode_utf8(basename($project)) . "-$hash.tar.$suffix";
3916
3917        print $cgi->header(
3918                -type => "application/$ctype",
3919                -content_disposition => 'inline; filename="' . "$filename" . '"',
3920                -status => '200 OK');
3921
3922        my $git = git_cmd_str();
3923        my $name = $project;
3924        $name =~ s/\047/\047\\\047\047/g;
3925        open my $fd, "-|",
3926                "$git archive --format=tar --prefix=\'$name\'/ $hash | $command"
3927                or die_error(undef, "Execute git-tar-tree failed");
3928        binmode STDOUT, ':raw';
3929        print <$fd>;
3930        binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3931        close $fd;
3932
3933}
3934
3935sub git_log {
3936        my $head = git_get_head_hash($project);
3937        if (!defined $hash) {
3938                $hash = $head;
3939        }
3940        if (!defined $page) {
3941                $page = 0;
3942        }
3943        my $refs = git_get_references();
3944
3945        my @commitlist = parse_commits($hash, 101, (100 * $page));
3946
3947        my $paging_nav = format_paging_nav('log', $hash, $head, $page, (100 * ($page+1)));
3948
3949        git_header_html();
3950        git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
3951
3952        if (!@commitlist) {
3953                my %co = parse_commit($hash);
3954
3955                git_print_header_div('summary', $project);
3956                print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
3957        }
3958        my $to = ($#commitlist >= 99) ? (99) : ($#commitlist);
3959        for (my $i = 0; $i <= $to; $i++) {
3960                my %co = %{$commitlist[$i]};
3961                next if !%co;
3962                my $commit = $co{'id'};
3963                my $ref = format_ref_marker($refs, $commit);
3964                my %ad = parse_date($co{'author_epoch'});
3965                git_print_header_div('commit',
3966                               "<span class=\"age\">$co{'age_string'}</span>" .
3967                               esc_html($co{'title'}) . $ref,
3968                               $commit);
3969                print "<div class=\"title_text\">\n" .
3970                      "<div class=\"log_link\">\n" .
3971                      $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
3972                      " | " .
3973                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
3974                      " | " .
3975                      $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
3976                      "<br/>\n" .
3977                      "</div>\n" .
3978                      "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
3979                      "</div>\n";
3980
3981                print "<div class=\"log_body\">\n";
3982                git_print_log($co{'comment'}, -final_empty_line=> 1);
3983                print "</div>\n";
3984        }
3985        if ($#commitlist >= 100) {
3986                print "<div class=\"page_nav\">\n";
3987                print $cgi->a({-href => href(action=>"log", hash=>$hash, page=>$page+1),
3988                               -accesskey => "n", -title => "Alt-n"}, "next");
3989                print "</div>\n";
3990        }
3991        git_footer_html();
3992}
3993
3994sub git_commit {
3995        $hash ||= $hash_base || "HEAD";
3996        my %co = parse_commit($hash);
3997        if (!%co) {
3998                die_error(undef, "Unknown commit object");
3999        }
4000        my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4001        my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
4002
4003        my $parent  = $co{'parent'};
4004        my $parents = $co{'parents'}; # listref
4005
4006        # we need to prepare $formats_nav before any parameter munging
4007        my $formats_nav;
4008        if (!defined $parent) {
4009                # --root commitdiff
4010                $formats_nav .= '(initial)';
4011        } elsif (@$parents == 1) {
4012                # single parent commit
4013                $formats_nav .=
4014                        '(parent: ' .
4015                        $cgi->a({-href => href(action=>"commit",
4016                                               hash=>$parent)},
4017                                esc_html(substr($parent, 0, 7))) .
4018                        ')';
4019        } else {
4020                # merge commit
4021                $formats_nav .=
4022                        '(merge: ' .
4023                        join(' ', map {
4024                                $cgi->a({-href => href(action=>"commit",
4025                                                       hash=>$_)},
4026                                        esc_html(substr($_, 0, 7)));
4027                        } @$parents ) .
4028                        ')';
4029        }
4030
4031        if (!defined $parent) {
4032                $parent = "--root";
4033        }
4034        my @difftree;
4035        open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
4036                @diff_opts,
4037                (@$parents <= 1 ? $parent : '-c'),
4038                $hash, "--"
4039                or die_error(undef, "Open git-diff-tree failed");
4040        @difftree = map { chomp; $_ } <$fd>;
4041        close $fd or die_error(undef, "Reading git-diff-tree failed");
4042
4043        # non-textual hash id's can be cached
4044        my $expires;
4045        if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4046                $expires = "+1d";
4047        }
4048        my $refs = git_get_references();
4049        my $ref = format_ref_marker($refs, $co{'id'});
4050
4051        my $have_snapshot = gitweb_have_snapshot();
4052
4053        git_header_html(undef, $expires);
4054        git_print_page_nav('commit', '',
4055                           $hash, $co{'tree'}, $hash,
4056                           $formats_nav);
4057
4058        if (defined $co{'parent'}) {
4059                git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
4060        } else {
4061                git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
4062        }
4063        print "<div class=\"title_text\">\n" .
4064              "<table cellspacing=\"0\">\n";
4065        print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
4066              "<tr>" .
4067              "<td></td><td> $ad{'rfc2822'}";
4068        if ($ad{'hour_local'} < 6) {
4069                printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
4070                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4071        } else {
4072                printf(" (%02d:%02d %s)",
4073                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4074        }
4075        print "</td>" .
4076              "</tr>\n";
4077        print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
4078        print "<tr><td></td><td> $cd{'rfc2822'}" .
4079              sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
4080              "</td></tr>\n";
4081        print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
4082        print "<tr>" .
4083              "<td>tree</td>" .
4084              "<td class=\"sha1\">" .
4085              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
4086                       class => "list"}, $co{'tree'}) .
4087              "</td>" .
4088              "<td class=\"link\">" .
4089              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
4090                      "tree");
4091        if ($have_snapshot) {
4092                print " | " .
4093                      $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
4094        }
4095        print "</td>" .
4096              "</tr>\n";
4097
4098        foreach my $par (@$parents) {
4099                print "<tr>" .
4100                      "<td>parent</td>" .
4101                      "<td class=\"sha1\">" .
4102                      $cgi->a({-href => href(action=>"commit", hash=>$par),
4103                               class => "list"}, $par) .
4104                      "</td>" .
4105                      "<td class=\"link\">" .
4106                      $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
4107                      " | " .
4108                      $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
4109                      "</td>" .
4110                      "</tr>\n";
4111        }
4112        print "</table>".
4113              "</div>\n";
4114
4115        print "<div class=\"page_body\">\n";
4116        git_print_log($co{'comment'});
4117        print "</div>\n";
4118
4119        git_difftree_body(\@difftree, $hash, @$parents);
4120
4121        git_footer_html();
4122}
4123
4124sub git_object {
4125        # object is defined by:
4126        # - hash or hash_base alone
4127        # - hash_base and file_name
4128        my $type;
4129
4130        # - hash or hash_base alone
4131        if ($hash || ($hash_base && !defined $file_name)) {
4132                my $object_id = $hash || $hash_base;
4133
4134                my $git_command = git_cmd_str();
4135                open my $fd, "-|", "$git_command cat-file -t $object_id 2>/dev/null"
4136                        or die_error('404 Not Found', "Object does not exist");
4137                $type = <$fd>;
4138                chomp $type;
4139                close $fd
4140                        or die_error('404 Not Found', "Object does not exist");
4141
4142        # - hash_base and file_name
4143        } elsif ($hash_base && defined $file_name) {
4144                $file_name =~ s,/+$,,;
4145
4146                system(git_cmd(), "cat-file", '-e', $hash_base) == 0
4147                        or die_error('404 Not Found', "Base object does not exist");
4148
4149                # here errors should not hapen
4150                open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
4151                        or die_error(undef, "Open git-ls-tree failed");
4152                my $line = <$fd>;
4153                close $fd;
4154
4155                #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
4156                unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
4157                        die_error('404 Not Found', "File or directory for given base does not exist");
4158                }
4159                $type = $2;
4160                $hash = $3;
4161        } else {
4162                die_error('404 Not Found', "Not enough information to find object");
4163        }
4164
4165        print $cgi->redirect(-uri => href(action=>$type, -full=>1,
4166                                          hash=>$hash, hash_base=>$hash_base,
4167                                          file_name=>$file_name),
4168                             -status => '302 Found');
4169}
4170
4171sub git_blobdiff {
4172        my $format = shift || 'html';
4173
4174        my $fd;
4175        my @difftree;
4176        my %diffinfo;
4177        my $expires;
4178
4179        # preparing $fd and %diffinfo for git_patchset_body
4180        # new style URI
4181        if (defined $hash_base && defined $hash_parent_base) {
4182                if (defined $file_name) {
4183                        # read raw output
4184                        open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4185                                $hash_parent_base, $hash_base,
4186                                "--", (defined $file_parent ? $file_parent : ()), $file_name
4187                                or die_error(undef, "Open git-diff-tree failed");
4188                        @difftree = map { chomp; $_ } <$fd>;
4189                        close $fd
4190                                or die_error(undef, "Reading git-diff-tree failed");
4191                        @difftree
4192                                or die_error('404 Not Found', "Blob diff not found");
4193
4194                } elsif (defined $hash &&
4195                         $hash =~ /[0-9a-fA-F]{40}/) {
4196                        # try to find filename from $hash
4197
4198                        # read filtered raw output
4199                        open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4200                                $hash_parent_base, $hash_base, "--"
4201                                or die_error(undef, "Open git-diff-tree failed");
4202                        @difftree =
4203                                # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
4204                                # $hash == to_id
4205                                grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
4206                                map { chomp; $_ } <$fd>;
4207                        close $fd
4208                                or die_error(undef, "Reading git-diff-tree failed");
4209                        @difftree
4210                                or die_error('404 Not Found', "Blob diff not found");
4211
4212                } else {
4213                        die_error('404 Not Found', "Missing one of the blob diff parameters");
4214                }
4215
4216                if (@difftree > 1) {
4217                        die_error('404 Not Found', "Ambiguous blob diff specification");
4218                }
4219
4220                %diffinfo = parse_difftree_raw_line($difftree[0]);
4221                $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
4222                $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
4223
4224                $hash_parent ||= $diffinfo{'from_id'};
4225                $hash        ||= $diffinfo{'to_id'};
4226
4227                # non-textual hash id's can be cached
4228                if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
4229                    $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
4230                        $expires = '+1d';
4231                }
4232
4233                # open patch output
4234                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4235                        '-p', ($format eq 'html' ? "--full-index" : ()),
4236                        $hash_parent_base, $hash_base,
4237                        "--", (defined $file_parent ? $file_parent : ()), $file_name
4238                        or die_error(undef, "Open git-diff-tree failed");
4239        }
4240
4241        # old/legacy style URI
4242        if (!%diffinfo && # if new style URI failed
4243            defined $hash && defined $hash_parent) {
4244                # fake git-diff-tree raw output
4245                $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
4246                $diffinfo{'from_id'} = $hash_parent;
4247                $diffinfo{'to_id'}   = $hash;
4248                if (defined $file_name) {
4249                        if (defined $file_parent) {
4250                                $diffinfo{'status'} = '2';
4251                                $diffinfo{'from_file'} = $file_parent;
4252                                $diffinfo{'to_file'}   = $file_name;
4253                        } else { # assume not renamed
4254                                $diffinfo{'status'} = '1';
4255                                $diffinfo{'from_file'} = $file_name;
4256                                $diffinfo{'to_file'}   = $file_name;
4257                        }
4258                } else { # no filename given
4259                        $diffinfo{'status'} = '2';
4260                        $diffinfo{'from_file'} = $hash_parent;
4261                        $diffinfo{'to_file'}   = $hash;
4262                }
4263
4264                # non-textual hash id's can be cached
4265                if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
4266                    $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4267                        $expires = '+1d';
4268                }
4269
4270                # open patch output
4271                open $fd, "-|", git_cmd(), "diff", @diff_opts,
4272                        '-p', ($format eq 'html' ? "--full-index" : ()),
4273                        $hash_parent, $hash, "--"
4274                        or die_error(undef, "Open git-diff failed");
4275        } else  {
4276                die_error('404 Not Found', "Missing one of the blob diff parameters")
4277                        unless %diffinfo;
4278        }
4279
4280        # header
4281        if ($format eq 'html') {
4282                my $formats_nav =
4283                        $cgi->a({-href => href(action=>"blobdiff_plain",
4284                                               hash=>$hash, hash_parent=>$hash_parent,
4285                                               hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
4286                                               file_name=>$file_name, file_parent=>$file_parent)},
4287                                "raw");
4288                git_header_html(undef, $expires);
4289                if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4290                        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4291                        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4292                } else {
4293                        print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
4294                        print "<div class=\"title\">$hash vs $hash_parent</div>\n";
4295                }
4296                if (defined $file_name) {
4297                        git_print_page_path($file_name, "blob", $hash_base);
4298                } else {
4299                        print "<div class=\"page_path\"></div>\n";
4300                }
4301
4302        } elsif ($format eq 'plain') {
4303                print $cgi->header(
4304                        -type => 'text/plain',
4305                        -charset => 'utf-8',
4306                        -expires => $expires,
4307                        -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
4308
4309                print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4310
4311        } else {
4312                die_error(undef, "Unknown blobdiff format");
4313        }
4314
4315        # patch
4316        if ($format eq 'html') {
4317                print "<div class=\"page_body\">\n";
4318
4319                git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
4320                close $fd;
4321
4322                print "</div>\n"; # class="page_body"
4323                git_footer_html();
4324
4325        } else {
4326                while (my $line = <$fd>) {
4327                        $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
4328                        $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
4329
4330                        print $line;
4331
4332                        last if $line =~ m!^\+\+\+!;
4333                }
4334                local $/ = undef;
4335                print <$fd>;
4336                close $fd;
4337        }
4338}
4339
4340sub git_blobdiff_plain {
4341        git_blobdiff('plain');
4342}
4343
4344sub git_commitdiff {
4345        my $format = shift || 'html';
4346        $hash ||= $hash_base || "HEAD";
4347        my %co = parse_commit($hash);
4348        if (!%co) {
4349                die_error(undef, "Unknown commit object");
4350        }
4351
4352        # we need to prepare $formats_nav before any parameter munging
4353        my $formats_nav;
4354        if ($format eq 'html') {
4355                $formats_nav =
4356                        $cgi->a({-href => href(action=>"commitdiff_plain",
4357                                               hash=>$hash, hash_parent=>$hash_parent)},
4358                                "raw");
4359
4360                if (defined $hash_parent) {
4361                        # commitdiff with two commits given
4362                        my $hash_parent_short = $hash_parent;
4363                        if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4364                                $hash_parent_short = substr($hash_parent, 0, 7);
4365                        }
4366                        $formats_nav .=
4367                                ' (from: ' .
4368                                $cgi->a({-href => href(action=>"commitdiff",
4369                                                       hash=>$hash_parent)},
4370                                        esc_html($hash_parent_short)) .
4371                                ')';
4372                } elsif (!$co{'parent'}) {
4373                        # --root commitdiff
4374                        $formats_nav .= ' (initial)';
4375                } elsif (scalar @{$co{'parents'}} == 1) {
4376                        # single parent commit
4377                        $formats_nav .=
4378                                ' (parent: ' .
4379                                $cgi->a({-href => href(action=>"commitdiff",
4380                                                       hash=>$co{'parent'})},
4381                                        esc_html(substr($co{'parent'}, 0, 7))) .
4382                                ')';
4383                } else {
4384                        # merge commit
4385                        $formats_nav .=
4386                                ' (merge: ' .
4387                                join(' ', map {
4388                                        $cgi->a({-href => href(action=>"commitdiff",
4389                                                               hash=>$_)},
4390                                                esc_html(substr($_, 0, 7)));
4391                                } @{$co{'parents'}} ) .
4392                                ')';
4393                }
4394        }
4395
4396        my $hash_parent_param = $hash_parent;
4397        if (!defined $hash_parent) {
4398                $hash_parent_param =
4399                        @{$co{'parents'}} > 1 ? '-c' : $co{'parent'} || '--root';
4400        }
4401
4402        # read commitdiff
4403        my $fd;
4404        my @difftree;
4405        if ($format eq 'html') {
4406                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4407                        "--no-commit-id", "--patch-with-raw", "--full-index",
4408                        $hash_parent_param, $hash, "--"
4409                        or die_error(undef, "Open git-diff-tree failed");
4410
4411                while (my $line = <$fd>) {
4412                        chomp $line;
4413                        # empty line ends raw part of diff-tree output
4414                        last unless $line;
4415                        push @difftree, scalar parse_difftree_raw_line($line);
4416                }
4417
4418        } elsif ($format eq 'plain') {
4419                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4420                        '-p', $hash_parent_param, $hash, "--"
4421                        or die_error(undef, "Open git-diff-tree failed");
4422
4423        } else {
4424                die_error(undef, "Unknown commitdiff format");
4425        }
4426
4427        # non-textual hash id's can be cached
4428        my $expires;
4429        if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4430                $expires = "+1d";
4431        }
4432
4433        # write commit message
4434        if ($format eq 'html') {
4435                my $refs = git_get_references();
4436                my $ref = format_ref_marker($refs, $co{'id'});
4437
4438                git_header_html(undef, $expires);
4439                git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
4440                git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
4441                git_print_authorship(\%co);
4442                print "<div class=\"page_body\">\n";
4443                if (@{$co{'comment'}} > 1) {
4444                        print "<div class=\"log\">\n";
4445                        git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
4446                        print "</div>\n"; # class="log"
4447                }
4448
4449        } elsif ($format eq 'plain') {
4450                my $refs = git_get_references("tags");
4451                my $tagname = git_get_rev_name_tags($hash);
4452                my $filename = basename($project) . "-$hash.patch";
4453
4454                print $cgi->header(
4455                        -type => 'text/plain',
4456                        -charset => 'utf-8',
4457                        -expires => $expires,
4458                        -content_disposition => 'inline; filename="' . "$filename" . '"');
4459                my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4460                print <<TEXT;
4461From: $co{'author'}
4462Date: $ad{'rfc2822'} ($ad{'tz_local'})
4463Subject: $co{'title'}
4464TEXT
4465                print "X-Git-Tag: $tagname\n" if $tagname;
4466                print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4467
4468                foreach my $line (@{$co{'comment'}}) {
4469                        print "$line\n";
4470                }
4471                print "---\n\n";
4472        }
4473
4474        # write patch
4475        if ($format eq 'html') {
4476                git_difftree_body(\@difftree, $hash, $hash_parent || @{$co{'parents'}});
4477                print "<br/>\n";
4478
4479                git_patchset_body($fd, \@difftree, $hash, $hash_parent || @{$co{'parents'}});
4480                close $fd;
4481                print "</div>\n"; # class="page_body"
4482                git_footer_html();
4483
4484        } elsif ($format eq 'plain') {
4485                local $/ = undef;
4486                print <$fd>;
4487                close $fd
4488                        or print "Reading git-diff-tree failed\n";
4489        }
4490}
4491
4492sub git_commitdiff_plain {
4493        git_commitdiff('plain');
4494}
4495
4496sub git_history {
4497        if (!defined $hash_base) {
4498                $hash_base = git_get_head_hash($project);
4499        }
4500        if (!defined $page) {
4501                $page = 0;
4502        }
4503        my $ftype;
4504        my %co = parse_commit($hash_base);
4505        if (!%co) {
4506                die_error(undef, "Unknown commit object");
4507        }
4508
4509        my $refs = git_get_references();
4510        my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
4511
4512        if (!defined $hash && defined $file_name) {
4513                $hash = git_get_hash_by_path($hash_base, $file_name);
4514        }
4515        if (defined $hash) {
4516                $ftype = git_get_type($hash);
4517        }
4518
4519        my @commitlist = parse_commits($hash_base, 101, (100 * $page), "--full-history", $file_name);
4520
4521        my $paging_nav = '';
4522        if ($page > 0) {
4523                $paging_nav .=
4524                        $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4525                                               file_name=>$file_name)},
4526                                "first");
4527                $paging_nav .= " &sdot; " .
4528                        $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4529                                               file_name=>$file_name, page=>$page-1),
4530                                 -accesskey => "p", -title => "Alt-p"}, "prev");
4531        } else {
4532                $paging_nav .= "first";
4533                $paging_nav .= " &sdot; prev";
4534        }
4535        if ($#commitlist >= 100) {
4536                $paging_nav .= " &sdot; " .
4537                        $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4538                                               file_name=>$file_name, page=>$page+1),
4539                                 -accesskey => "n", -title => "Alt-n"}, "next");
4540        } else {
4541                $paging_nav .= " &sdot; next";
4542        }
4543        my $next_link = '';
4544        if ($#commitlist >= 100) {
4545                $next_link =
4546                        $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4547                                               file_name=>$file_name, page=>$page+1),
4548                                 -accesskey => "n", -title => "Alt-n"}, "next");
4549        }
4550
4551        git_header_html();
4552        git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
4553        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4554        git_print_page_path($file_name, $ftype, $hash_base);
4555
4556        git_history_body(\@commitlist, 0, 99,
4557                         $refs, $hash_base, $ftype, $next_link);
4558
4559        git_footer_html();
4560}
4561
4562sub git_search {
4563        my ($have_search) = gitweb_check_feature('search');
4564        if (!$have_search) {
4565                die_error('403 Permission denied', "Permission denied");
4566        }
4567        if (!defined $searchtext) {
4568                die_error(undef, "Text field empty");
4569        }
4570        if (!defined $hash) {
4571                $hash = git_get_head_hash($project);
4572        }
4573        my %co = parse_commit($hash);
4574        if (!%co) {
4575                die_error(undef, "Unknown commit object");
4576        }
4577        if (!defined $page) {
4578                $page = 0;
4579        }
4580
4581        $searchtype ||= 'commit';
4582        if ($searchtype eq 'pickaxe') {
4583                # pickaxe may take all resources of your box and run for several minutes
4584                # with every query - so decide by yourself how public you make this feature
4585                my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4586                if (!$have_pickaxe) {
4587                        die_error('403 Permission denied', "Permission denied");
4588                }
4589        }
4590
4591        git_header_html();
4592
4593        if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
4594                my $greptype;
4595                if ($searchtype eq 'commit') {
4596                        $greptype = "--grep=";
4597                } elsif ($searchtype eq 'author') {
4598                        $greptype = "--author=";
4599                } elsif ($searchtype eq 'committer') {
4600                        $greptype = "--committer=";
4601                }
4602                $greptype .= $searchtext;
4603                my @commitlist = parse_commits($hash, 101, (100 * $page), $greptype);
4604
4605                my $paging_nav = '';
4606                if ($page > 0) {
4607                        $paging_nav .=
4608                                $cgi->a({-href => href(action=>"search", hash=>$hash,
4609                                                       searchtext=>$searchtext, searchtype=>$searchtype)},
4610                                        "first");
4611                        $paging_nav .= " &sdot; " .
4612                                $cgi->a({-href => href(action=>"search", hash=>$hash,
4613                                                       searchtext=>$searchtext, searchtype=>$searchtype,
4614                                                       page=>$page-1),
4615                                         -accesskey => "p", -title => "Alt-p"}, "prev");
4616                } else {
4617                        $paging_nav .= "first";
4618                        $paging_nav .= " &sdot; prev";
4619                }
4620                if ($#commitlist >= 100) {
4621                        $paging_nav .= " &sdot; " .
4622                                $cgi->a({-href => href(action=>"search", hash=>$hash,
4623                                                       searchtext=>$searchtext, searchtype=>$searchtype,
4624                                                       page=>$page+1),
4625                                         -accesskey => "n", -title => "Alt-n"}, "next");
4626                } else {
4627                        $paging_nav .= " &sdot; next";
4628                }
4629                my $next_link = '';
4630                if ($#commitlist >= 100) {
4631                        $next_link =
4632                                $cgi->a({-href => href(action=>"search", hash=>$hash,
4633                                                       searchtext=>$searchtext, searchtype=>$searchtype,
4634                                                       page=>$page+1),
4635                                         -accesskey => "n", -title => "Alt-n"}, "next");
4636                }
4637
4638                git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
4639                git_print_header_div('commit', esc_html($co{'title'}), $hash);
4640                git_search_grep_body(\@commitlist, 0, 99, $next_link);
4641        }
4642
4643        if ($searchtype eq 'pickaxe') {
4644                git_print_page_nav('','', $hash,$co{'tree'},$hash);
4645                git_print_header_div('commit', esc_html($co{'title'}), $hash);
4646
4647                print "<table cellspacing=\"0\">\n";
4648                my $alternate = 1;
4649                $/ = "\n";
4650                my $git_command = git_cmd_str();
4651                open my $fd, "-|", "$git_command rev-list $hash | " .
4652                        "$git_command diff-tree -r --stdin -S\'$searchtext\'";
4653                undef %co;
4654                my @files;
4655                while (my $line = <$fd>) {
4656                        if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
4657                                my %set;
4658                                $set{'file'} = $6;
4659                                $set{'from_id'} = $3;
4660                                $set{'to_id'} = $4;
4661                                $set{'id'} = $set{'to_id'};
4662                                if ($set{'id'} =~ m/0{40}/) {
4663                                        $set{'id'} = $set{'from_id'};
4664                                }
4665                                if ($set{'id'} =~ m/0{40}/) {
4666                                        next;
4667                                }
4668                                push @files, \%set;
4669                        } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
4670                                if (%co) {
4671                                        if ($alternate) {
4672                                                print "<tr class=\"dark\">\n";
4673                                        } else {
4674                                                print "<tr class=\"light\">\n";
4675                                        }
4676                                        $alternate ^= 1;
4677                                        print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
4678                                              "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
4679                                              "<td>" .
4680                                              $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
4681                                                      -class => "list subject"},
4682                                                      esc_html(chop_str($co{'title'}, 50)) . "<br/>");
4683                                        while (my $setref = shift @files) {
4684                                                my %set = %$setref;
4685                                                print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
4686                                                                             hash=>$set{'id'}, file_name=>$set{'file'}),
4687                                                              -class => "list"},
4688                                                              "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
4689                                                      "<br/>\n";
4690                                        }
4691                                        print "</td>\n" .
4692                                              "<td class=\"link\">" .
4693                                              $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
4694                                              " | " .
4695                                              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
4696                                        print "</td>\n" .
4697                                              "</tr>\n";
4698                                }
4699                                %co = parse_commit($1);
4700                        }
4701                }
4702                close $fd;
4703
4704                print "</table>\n";
4705        }
4706        git_footer_html();
4707}
4708
4709sub git_search_help {
4710        git_header_html();
4711        git_print_page_nav('','', $hash,$hash,$hash);
4712        print <<EOT;
4713<dl>
4714<dt><b>commit</b></dt>
4715<dd>The commit messages and authorship information will be scanned for the given string.</dd>
4716<dt><b>author</b></dt>
4717<dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
4718<dt><b>committer</b></dt>
4719<dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
4720EOT
4721        my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4722        if ($have_pickaxe) {
4723                print <<EOT;
4724<dt><b>pickaxe</b></dt>
4725<dd>All commits that caused the string to appear or disappear from any file (changes that
4726added, removed or "modified" the string) will be listed. This search can take a while and
4727takes a lot of strain on the server, so please use it wisely.</dd>
4728EOT
4729        }
4730        print "</dl>\n";
4731        git_footer_html();
4732}
4733
4734sub git_shortlog {
4735        my $head = git_get_head_hash($project);
4736        if (!defined $hash) {
4737                $hash = $head;
4738        }
4739        if (!defined $page) {
4740                $page = 0;
4741        }
4742        my $refs = git_get_references();
4743
4744        my @commitlist = parse_commits($hash, 101, (100 * $page));
4745
4746        my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, (100 * ($page+1)));
4747        my $next_link = '';
4748        if ($#commitlist >= 100) {
4749                $next_link =
4750                        $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
4751                                 -accesskey => "n", -title => "Alt-n"}, "next");
4752        }
4753
4754        git_header_html();
4755        git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
4756        git_print_header_div('summary', $project);
4757
4758        git_shortlog_body(\@commitlist, 0, 99, $refs, $next_link);
4759
4760        git_footer_html();
4761}
4762
4763## ......................................................................
4764## feeds (RSS, Atom; OPML)
4765
4766sub git_feed {
4767        my $format = shift || 'atom';
4768        my ($have_blame) = gitweb_check_feature('blame');
4769
4770        # Atom: http://www.atomenabled.org/developers/syndication/
4771        # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
4772        if ($format ne 'rss' && $format ne 'atom') {
4773                die_error(undef, "Unknown web feed format");
4774        }
4775
4776        # log/feed of current (HEAD) branch, log of given branch, history of file/directory
4777        my $head = $hash || 'HEAD';
4778        my @commitlist = parse_commits($head, 150);
4779
4780        my %latest_commit;
4781        my %latest_date;
4782        my $content_type = "application/$format+xml";
4783        if (defined $cgi->http('HTTP_ACCEPT') &&
4784                 $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
4785                # browser (feed reader) prefers text/xml
4786                $content_type = 'text/xml';
4787        }
4788        if (defined($commitlist[0])) {
4789                %latest_commit = %{$commitlist[0]};
4790                %latest_date   = parse_date($latest_commit{'author_epoch'});
4791                print $cgi->header(
4792                        -type => $content_type,
4793                        -charset => 'utf-8',
4794                        -last_modified => $latest_date{'rfc2822'});
4795        } else {
4796                print $cgi->header(
4797                        -type => $content_type,
4798                        -charset => 'utf-8');
4799        }
4800
4801        # Optimization: skip generating the body if client asks only
4802        # for Last-Modified date.
4803        return if ($cgi->request_method() eq 'HEAD');
4804
4805        # header variables
4806        my $title = "$site_name - $project/$action";
4807        my $feed_type = 'log';
4808        if (defined $hash) {
4809                $title .= " - '$hash'";
4810                $feed_type = 'branch log';
4811                if (defined $file_name) {
4812                        $title .= " :: $file_name";
4813                        $feed_type = 'history';
4814                }
4815        } elsif (defined $file_name) {
4816                $title .= " - $file_name";
4817                $feed_type = 'history';
4818        }
4819        $title .= " $feed_type";
4820        my $descr = git_get_project_description($project);
4821        if (defined $descr) {
4822                $descr = esc_html($descr);
4823        } else {
4824                $descr = "$project " .
4825                         ($format eq 'rss' ? 'RSS' : 'Atom') .
4826                         " feed";
4827        }
4828        my $owner = git_get_project_owner($project);
4829        $owner = esc_html($owner);
4830
4831        #header
4832        my $alt_url;
4833        if (defined $file_name) {
4834                $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
4835        } elsif (defined $hash) {
4836                $alt_url = href(-full=>1, action=>"log", hash=>$hash);
4837        } else {
4838                $alt_url = href(-full=>1, action=>"summary");
4839        }
4840        print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
4841        if ($format eq 'rss') {
4842                print <<XML;
4843<rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
4844<channel>
4845XML
4846                print "<title>$title</title>\n" .
4847                      "<link>$alt_url</link>\n" .
4848                      "<description>$descr</description>\n" .
4849                      "<language>en</language>\n";
4850        } elsif ($format eq 'atom') {
4851                print <<XML;
4852<feed xmlns="http://www.w3.org/2005/Atom">
4853XML
4854                print "<title>$title</title>\n" .
4855                      "<subtitle>$descr</subtitle>\n" .
4856                      '<link rel="alternate" type="text/html" href="' .
4857                      $alt_url . '" />' . "\n" .
4858                      '<link rel="self" type="' . $content_type . '" href="' .
4859                      $cgi->self_url() . '" />' . "\n" .
4860                      "<id>" . href(-full=>1) . "</id>\n" .
4861                      # use project owner for feed author
4862                      "<author><name>$owner</name></author>\n";
4863                if (defined $favicon) {
4864                        print "<icon>" . esc_url($favicon) . "</icon>\n";
4865                }
4866                if (defined $logo_url) {
4867                        # not twice as wide as tall: 72 x 27 pixels
4868                        print "<logo>" . esc_url($logo) . "</logo>\n";
4869                }
4870                if (! %latest_date) {
4871                        # dummy date to keep the feed valid until commits trickle in:
4872                        print "<updated>1970-01-01T00:00:00Z</updated>\n";
4873                } else {
4874                        print "<updated>$latest_date{'iso-8601'}</updated>\n";
4875                }
4876        }
4877
4878        # contents
4879        for (my $i = 0; $i <= $#commitlist; $i++) {
4880                my %co = %{$commitlist[$i]};
4881                my $commit = $co{'id'};
4882                # we read 150, we always show 30 and the ones more recent than 48 hours
4883                if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
4884                        last;
4885                }
4886                my %cd = parse_date($co{'author_epoch'});
4887
4888                # get list of changed files
4889                open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4890                        $co{'parent'}, $co{'id'}, "--", (defined $file_name ? $file_name : ())
4891                        or next;
4892                my @difftree = map { chomp; $_ } <$fd>;
4893                close $fd
4894                        or next;
4895
4896                # print element (entry, item)
4897                my $co_url = href(-full=>1, action=>"commit", hash=>$commit);
4898                if ($format eq 'rss') {
4899                        print "<item>\n" .
4900                              "<title>" . esc_html($co{'title'}) . "</title>\n" .
4901                              "<author>" . esc_html($co{'author'}) . "</author>\n" .
4902                              "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
4903                              "<guid isPermaLink=\"true\">$co_url</guid>\n" .
4904                              "<link>$co_url</link>\n" .
4905                              "<description>" . esc_html($co{'title'}) . "</description>\n" .
4906                              "<content:encoded>" .
4907                              "<![CDATA[\n";
4908                } elsif ($format eq 'atom') {
4909                        print "<entry>\n" .
4910                              "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
4911                              "<updated>$cd{'iso-8601'}</updated>\n" .
4912                              "<author>\n" .
4913                              "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
4914                        if ($co{'author_email'}) {
4915                                print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
4916                        }
4917                        print "</author>\n" .
4918                              # use committer for contributor
4919                              "<contributor>\n" .
4920                              "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
4921                        if ($co{'committer_email'}) {
4922                                print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
4923                        }
4924                        print "</contributor>\n" .
4925                              "<published>$cd{'iso-8601'}</published>\n" .
4926                              "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
4927                              "<id>$co_url</id>\n" .
4928                              "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
4929                              "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
4930                }
4931                my $comment = $co{'comment'};
4932                print "<pre>\n";
4933                foreach my $line (@$comment) {
4934                        $line = esc_html($line);
4935                        print "$line\n";
4936                }
4937                print "</pre><ul>\n";
4938                foreach my $difftree_line (@difftree) {
4939                        my %difftree = parse_difftree_raw_line($difftree_line);
4940                        next if !$difftree{'from_id'};
4941
4942                        my $file = $difftree{'file'} || $difftree{'to_file'};
4943
4944                        print "<li>" .
4945                              "[" .
4946                              $cgi->a({-href => href(-full=>1, action=>"blobdiff",
4947                                                     hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
4948                                                     hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
4949                                                     file_name=>$file, file_parent=>$difftree{'from_file'}),
4950                                      -title => "diff"}, 'D');
4951                        if ($have_blame) {
4952                                print $cgi->a({-href => href(-full=>1, action=>"blame",
4953                                                             file_name=>$file, hash_base=>$commit),
4954                                              -title => "blame"}, 'B');
4955                        }
4956                        # if this is not a feed of a file history
4957                        if (!defined $file_name || $file_name ne $file) {
4958                                print $cgi->a({-href => href(-full=>1, action=>"history",
4959                                                             file_name=>$file, hash=>$commit),
4960                                              -title => "history"}, 'H');
4961                        }
4962                        $file = esc_path($file);
4963                        print "] ".
4964                              "$file</li>\n";
4965                }
4966                if ($format eq 'rss') {
4967                        print "</ul>]]>\n" .
4968                              "</content:encoded>\n" .
4969                              "</item>\n";
4970                } elsif ($format eq 'atom') {
4971                        print "</ul>\n</div>\n" .
4972                              "</content>\n" .
4973                              "</entry>\n";
4974                }
4975        }
4976
4977        # end of feed
4978        if ($format eq 'rss') {
4979                print "</channel>\n</rss>\n";
4980        }       elsif ($format eq 'atom') {
4981                print "</feed>\n";
4982        }
4983}
4984
4985sub git_rss {
4986        git_feed('rss');
4987}
4988
4989sub git_atom {
4990        git_feed('atom');
4991}
4992
4993sub git_opml {
4994        my @list = git_get_projects_list();
4995
4996        print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
4997        print <<XML;
4998<?xml version="1.0" encoding="utf-8"?>
4999<opml version="1.0">
5000<head>
5001  <title>$site_name OPML Export</title>
5002</head>
5003<body>
5004<outline text="git RSS feeds">
5005XML
5006
5007        foreach my $pr (@list) {
5008                my %proj = %$pr;
5009                my $head = git_get_head_hash($proj{'path'});
5010                if (!defined $head) {
5011                        next;
5012                }
5013                $git_dir = "$projectroot/$proj{'path'}";
5014                my %co = parse_commit($head);
5015                if (!%co) {
5016                        next;
5017                }
5018
5019                my $path = esc_html(chop_str($proj{'path'}, 25, 5));
5020                my $rss  = "$my_url?p=$proj{'path'};a=rss";
5021                my $html = "$my_url?p=$proj{'path'};a=summary";
5022                print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
5023        }
5024        print <<XML;
5025</outline>
5026</body>
5027</opml>
5028XML
5029}