gitweb / gitweb.perlon commit Documentation gitk: Describe what --merge does (9f1915d)
   1#!/usr/bin/perl
   2
   3# gitweb - simple web interface to track changes in git repositories
   4#
   5# (C) 2005-2006, Kay Sievers <kay.sievers@vrfy.org>
   6# (C) 2005, Christian Gierke
   7#
   8# This program is licensed under the GPLv2
   9
  10use strict;
  11use warnings;
  12use CGI qw(:standard :escapeHTML -nosticky);
  13use CGI::Util qw(unescape);
  14use CGI::Carp qw(fatalsToBrowser);
  15use Encode;
  16use Fcntl ':mode';
  17use File::Find qw();
  18use File::Basename qw(basename);
  19binmode STDOUT, ':utf8';
  20
  21BEGIN {
  22        CGI->compile() if $ENV{'MOD_PERL'};
  23}
  24
  25our $cgi = new CGI;
  26our $version = "++GIT_VERSION++";
  27our $my_url = $cgi->url();
  28our $my_uri = $cgi->url(-absolute => 1);
  29
  30# core git executable to use
  31# this can just be "git" if your webserver has a sensible PATH
  32our $GIT = "++GIT_BINDIR++/git";
  33
  34# absolute fs-path which will be prepended to the project path
  35#our $projectroot = "/pub/scm";
  36our $projectroot = "++GITWEB_PROJECTROOT++";
  37
  38# fs traversing limit for getting project list
  39# the number is relative to the projectroot
  40our $project_maxdepth = "++GITWEB_PROJECT_MAXDEPTH++";
  41
  42# target of the home link on top of all pages
  43our $home_link = $my_uri || "/";
  44
  45# string of the home link on top of all pages
  46our $home_link_str = "++GITWEB_HOME_LINK_STR++";
  47
  48# name of your site or organization to appear in page titles
  49# replace this with something more descriptive for clearer bookmarks
  50our $site_name = "++GITWEB_SITENAME++"
  51                 || ($ENV{'SERVER_NAME'} || "Untitled") . " Git";
  52
  53# filename of html text to include at top of each page
  54our $site_header = "++GITWEB_SITE_HEADER++";
  55# html text to include at home page
  56our $home_text = "++GITWEB_HOMETEXT++";
  57# filename of html text to include at bottom of each page
  58our $site_footer = "++GITWEB_SITE_FOOTER++";
  59
  60# URI of stylesheets
  61our @stylesheets = ("++GITWEB_CSS++");
  62# URI of a single stylesheet, which can be overridden in GITWEB_CONFIG.
  63our $stylesheet = undef;
  64# URI of GIT logo (72x27 size)
  65our $logo = "++GITWEB_LOGO++";
  66# URI of GIT favicon, assumed to be image/png type
  67our $favicon = "++GITWEB_FAVICON++";
  68
  69# URI and label (title) of GIT logo link
  70#our $logo_url = "http://www.kernel.org/pub/software/scm/git/docs/";
  71#our $logo_label = "git documentation";
  72our $logo_url = "http://git.or.cz/";
  73our $logo_label = "git homepage";
  74
  75# source of projects list
  76our $projects_list = "++GITWEB_LIST++";
  77
  78# the width (in characters) of the projects list "Description" column
  79our $projects_list_description_width = 25;
  80
  81# default order of projects list
  82# valid values are none, project, descr, owner, and age
  83our $default_projects_order = "project";
  84
  85# show repository only if this file exists
  86# (only effective if this variable evaluates to true)
  87our $export_ok = "++GITWEB_EXPORT_OK++";
  88
  89# only allow viewing of repositories also shown on the overview page
  90our $strict_export = "++GITWEB_STRICT_EXPORT++";
  91
  92# list of git base URLs used for URL to where fetch project from,
  93# i.e. full URL is "$git_base_url/$project"
  94our @git_base_url_list = grep { $_ ne '' } ("++GITWEB_BASE_URL++");
  95
  96# default blob_plain mimetype and default charset for text/plain blob
  97our $default_blob_plain_mimetype = 'text/plain';
  98our $default_text_plain_charset  = undef;
  99
 100# file to use for guessing MIME types before trying /etc/mime.types
 101# (relative to the current git repository)
 102our $mimetypes_file = undef;
 103
 104# assume this charset if line contains non-UTF-8 characters;
 105# it should be valid encoding (see Encoding::Supported(3pm) for list),
 106# for which encoding all byte sequences are valid, for example
 107# 'iso-8859-1' aka 'latin1' (it is decoded without checking, so it
 108# could be even 'utf-8' for the old behavior)
 109our $fallback_encoding = 'latin1';
 110
 111# rename detection options for git-diff and git-diff-tree
 112# - default is '-M', with the cost proportional to
 113#   (number of removed files) * (number of new files).
 114# - more costly is '-C' (which implies '-M'), with the cost proportional to
 115#   (number of changed files + number of removed files) * (number of new files)
 116# - even more costly is '-C', '--find-copies-harder' with cost
 117#   (number of files in the original tree) * (number of new files)
 118# - one might want to include '-B' option, e.g. '-B', '-M'
 119our @diff_opts = ('-M'); # taken from git_commit
 120
 121# information about snapshot formats that gitweb is capable of serving
 122our %known_snapshot_formats = (
 123        # name => {
 124        #       'display' => display name,
 125        #       'type' => mime type,
 126        #       'suffix' => filename suffix,
 127        #       'format' => --format for git-archive,
 128        #       'compressor' => [compressor command and arguments]
 129        #                       (array reference, optional)}
 130        #
 131        'tgz' => {
 132                'display' => 'tar.gz',
 133                'type' => 'application/x-gzip',
 134                'suffix' => '.tar.gz',
 135                'format' => 'tar',
 136                'compressor' => ['gzip']},
 137
 138        'tbz2' => {
 139                'display' => 'tar.bz2',
 140                'type' => 'application/x-bzip2',
 141                'suffix' => '.tar.bz2',
 142                'format' => 'tar',
 143                'compressor' => ['bzip2']},
 144
 145        'zip' => {
 146                'display' => 'zip',
 147                'type' => 'application/x-zip',
 148                'suffix' => '.zip',
 149                'format' => 'zip'},
 150);
 151
 152# Aliases so we understand old gitweb.snapshot values in repository
 153# configuration.
 154our %known_snapshot_format_aliases = (
 155        'gzip'  => 'tgz',
 156        'bzip2' => 'tbz2',
 157
 158        # backward compatibility: legacy gitweb config support
 159        'x-gzip' => undef, 'gz' => undef,
 160        'x-bzip2' => undef, 'bz2' => undef,
 161        'x-zip' => undef, '' => undef,
 162);
 163
 164# You define site-wide feature defaults here; override them with
 165# $GITWEB_CONFIG as necessary.
 166our %feature = (
 167        # feature => {
 168        #       'sub' => feature-sub (subroutine),
 169        #       'override' => allow-override (boolean),
 170        #       'default' => [ default options...] (array reference)}
 171        #
 172        # if feature is overridable (it means that allow-override has true value),
 173        # then feature-sub will be called with default options as parameters;
 174        # return value of feature-sub indicates if to enable specified feature
 175        #
 176        # if there is no 'sub' key (no feature-sub), then feature cannot be
 177        # overriden
 178        #
 179        # use gitweb_check_feature(<feature>) to check if <feature> is enabled
 180
 181        # Enable the 'blame' blob view, showing the last commit that modified
 182        # each line in the file. This can be very CPU-intensive.
 183
 184        # To enable system wide have in $GITWEB_CONFIG
 185        # $feature{'blame'}{'default'} = [1];
 186        # To have project specific config enable override in $GITWEB_CONFIG
 187        # $feature{'blame'}{'override'} = 1;
 188        # and in project config gitweb.blame = 0|1;
 189        'blame' => {
 190                'sub' => \&feature_blame,
 191                'override' => 0,
 192                'default' => [0]},
 193
 194        # Enable the 'snapshot' link, providing a compressed archive of any
 195        # tree. This can potentially generate high traffic if you have large
 196        # project.
 197
 198        # Value is a list of formats defined in %known_snapshot_formats that
 199        # you wish to offer.
 200        # To disable system wide have in $GITWEB_CONFIG
 201        # $feature{'snapshot'}{'default'} = [];
 202        # To have project specific config enable override in $GITWEB_CONFIG
 203        # $feature{'snapshot'}{'override'} = 1;
 204        # and in project config, a comma-separated list of formats or "none"
 205        # to disable.  Example: gitweb.snapshot = tbz2,zip;
 206        'snapshot' => {
 207                'sub' => \&feature_snapshot,
 208                'override' => 0,
 209                'default' => ['tgz']},
 210
 211        # Enable text search, which will list the commits which match author,
 212        # committer or commit text to a given string.  Enabled by default.
 213        # Project specific override is not supported.
 214        'search' => {
 215                'override' => 0,
 216                'default' => [1]},
 217
 218        # Enable grep search, which will list the files in currently selected
 219        # tree containing the given string. Enabled by default. This can be
 220        # potentially CPU-intensive, of course.
 221
 222        # To enable system wide have in $GITWEB_CONFIG
 223        # $feature{'grep'}{'default'} = [1];
 224        # To have project specific config enable override in $GITWEB_CONFIG
 225        # $feature{'grep'}{'override'} = 1;
 226        # and in project config gitweb.grep = 0|1;
 227        'grep' => {
 228                'override' => 0,
 229                'default' => [1]},
 230
 231        # Enable the pickaxe search, which will list the commits that modified
 232        # a given string in a file. This can be practical and quite faster
 233        # alternative to 'blame', but still potentially CPU-intensive.
 234
 235        # To enable system wide have in $GITWEB_CONFIG
 236        # $feature{'pickaxe'}{'default'} = [1];
 237        # To have project specific config enable override in $GITWEB_CONFIG
 238        # $feature{'pickaxe'}{'override'} = 1;
 239        # and in project config gitweb.pickaxe = 0|1;
 240        'pickaxe' => {
 241                'sub' => \&feature_pickaxe,
 242                'override' => 0,
 243                'default' => [1]},
 244
 245        # Make gitweb use an alternative format of the URLs which can be
 246        # more readable and natural-looking: project name is embedded
 247        # directly in the path and the query string contains other
 248        # auxiliary information. All gitweb installations recognize
 249        # URL in either format; this configures in which formats gitweb
 250        # generates links.
 251
 252        # To enable system wide have in $GITWEB_CONFIG
 253        # $feature{'pathinfo'}{'default'} = [1];
 254        # Project specific override is not supported.
 255
 256        # Note that you will need to change the default location of CSS,
 257        # favicon, logo and possibly other files to an absolute URL. Also,
 258        # if gitweb.cgi serves as your indexfile, you will need to force
 259        # $my_uri to contain the script name in your $GITWEB_CONFIG.
 260        'pathinfo' => {
 261                'override' => 0,
 262                'default' => [0]},
 263
 264        # Make gitweb consider projects in project root subdirectories
 265        # to be forks of existing projects. Given project $projname.git,
 266        # projects matching $projname/*.git will not be shown in the main
 267        # projects list, instead a '+' mark will be added to $projname
 268        # there and a 'forks' view will be enabled for the project, listing
 269        # all the forks. If project list is taken from a file, forks have
 270        # to be listed after the main project.
 271
 272        # To enable system wide have in $GITWEB_CONFIG
 273        # $feature{'forks'}{'default'} = [1];
 274        # Project specific override is not supported.
 275        'forks' => {
 276                'override' => 0,
 277                'default' => [0]},
 278);
 279
 280sub gitweb_check_feature {
 281        my ($name) = @_;
 282        return unless exists $feature{$name};
 283        my ($sub, $override, @defaults) = (
 284                $feature{$name}{'sub'},
 285                $feature{$name}{'override'},
 286                @{$feature{$name}{'default'}});
 287        if (!$override) { return @defaults; }
 288        if (!defined $sub) {
 289                warn "feature $name is not overrideable";
 290                return @defaults;
 291        }
 292        return $sub->(@defaults);
 293}
 294
 295sub feature_blame {
 296        my ($val) = git_get_project_config('blame', '--bool');
 297
 298        if ($val eq 'true') {
 299                return 1;
 300        } elsif ($val eq 'false') {
 301                return 0;
 302        }
 303
 304        return $_[0];
 305}
 306
 307sub feature_snapshot {
 308        my (@fmts) = @_;
 309
 310        my ($val) = git_get_project_config('snapshot');
 311
 312        if ($val) {
 313                @fmts = ($val eq 'none' ? () : split /\s*[,\s]\s*/, $val);
 314        }
 315
 316        return @fmts;
 317}
 318
 319sub feature_grep {
 320        my ($val) = git_get_project_config('grep', '--bool');
 321
 322        if ($val eq 'true') {
 323                return (1);
 324        } elsif ($val eq 'false') {
 325                return (0);
 326        }
 327
 328        return ($_[0]);
 329}
 330
 331sub feature_pickaxe {
 332        my ($val) = git_get_project_config('pickaxe', '--bool');
 333
 334        if ($val eq 'true') {
 335                return (1);
 336        } elsif ($val eq 'false') {
 337                return (0);
 338        }
 339
 340        return ($_[0]);
 341}
 342
 343# checking HEAD file with -e is fragile if the repository was
 344# initialized long time ago (i.e. symlink HEAD) and was pack-ref'ed
 345# and then pruned.
 346sub check_head_link {
 347        my ($dir) = @_;
 348        my $headfile = "$dir/HEAD";
 349        return ((-e $headfile) ||
 350                (-l $headfile && readlink($headfile) =~ /^refs\/heads\//));
 351}
 352
 353sub check_export_ok {
 354        my ($dir) = @_;
 355        return (check_head_link($dir) &&
 356                (!$export_ok || -e "$dir/$export_ok"));
 357}
 358
 359# process alternate names for backward compatibility
 360# filter out unsupported (unknown) snapshot formats
 361sub filter_snapshot_fmts {
 362        my @fmts = @_;
 363
 364        @fmts = map {
 365                exists $known_snapshot_format_aliases{$_} ?
 366                       $known_snapshot_format_aliases{$_} : $_} @fmts;
 367        @fmts = grep(exists $known_snapshot_formats{$_}, @fmts);
 368
 369}
 370
 371our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 372if (-e $GITWEB_CONFIG) {
 373        do $GITWEB_CONFIG;
 374} else {
 375        our $GITWEB_CONFIG_SYSTEM = $ENV{'GITWEB_CONFIG_SYSTEM'} || "++GITWEB_CONFIG_SYSTEM++";
 376        do $GITWEB_CONFIG_SYSTEM if -e $GITWEB_CONFIG_SYSTEM;
 377}
 378
 379# version of the core git binary
 380our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 381
 382$projects_list ||= $projectroot;
 383
 384# ======================================================================
 385# input validation and dispatch
 386our $action = $cgi->param('a');
 387if (defined $action) {
 388        if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 389                die_error(undef, "Invalid action parameter");
 390        }
 391}
 392
 393# parameters which are pathnames
 394our $project = $cgi->param('p');
 395if (defined $project) {
 396        if (!validate_pathname($project) ||
 397            !(-d "$projectroot/$project") ||
 398            !check_head_link("$projectroot/$project") ||
 399            ($export_ok && !(-e "$projectroot/$project/$export_ok")) ||
 400            ($strict_export && !project_in_list($project))) {
 401                undef $project;
 402                die_error(undef, "No such project");
 403        }
 404}
 405
 406our $file_name = $cgi->param('f');
 407if (defined $file_name) {
 408        if (!validate_pathname($file_name)) {
 409                die_error(undef, "Invalid file parameter");
 410        }
 411}
 412
 413our $file_parent = $cgi->param('fp');
 414if (defined $file_parent) {
 415        if (!validate_pathname($file_parent)) {
 416                die_error(undef, "Invalid file parent parameter");
 417        }
 418}
 419
 420# parameters which are refnames
 421our $hash = $cgi->param('h');
 422if (defined $hash) {
 423        if (!validate_refname($hash)) {
 424                die_error(undef, "Invalid hash parameter");
 425        }
 426}
 427
 428our $hash_parent = $cgi->param('hp');
 429if (defined $hash_parent) {
 430        if (!validate_refname($hash_parent)) {
 431                die_error(undef, "Invalid hash parent parameter");
 432        }
 433}
 434
 435our $hash_base = $cgi->param('hb');
 436if (defined $hash_base) {
 437        if (!validate_refname($hash_base)) {
 438                die_error(undef, "Invalid hash base parameter");
 439        }
 440}
 441
 442my %allowed_options = (
 443        "--no-merges" => [ qw(rss atom log shortlog history) ],
 444);
 445
 446our @extra_options = $cgi->param('opt');
 447if (defined @extra_options) {
 448        foreach my $opt (@extra_options) {
 449                if (not exists $allowed_options{$opt}) {
 450                        die_error(undef, "Invalid option parameter");
 451                }
 452                if (not grep(/^$action$/, @{$allowed_options{$opt}})) {
 453                        die_error(undef, "Invalid option parameter for this action");
 454                }
 455        }
 456}
 457
 458our $hash_parent_base = $cgi->param('hpb');
 459if (defined $hash_parent_base) {
 460        if (!validate_refname($hash_parent_base)) {
 461                die_error(undef, "Invalid hash parent base parameter");
 462        }
 463}
 464
 465# other parameters
 466our $page = $cgi->param('pg');
 467if (defined $page) {
 468        if ($page =~ m/[^0-9]/) {
 469                die_error(undef, "Invalid page parameter");
 470        }
 471}
 472
 473our $searchtype = $cgi->param('st');
 474if (defined $searchtype) {
 475        if ($searchtype =~ m/[^a-z]/) {
 476                die_error(undef, "Invalid searchtype parameter");
 477        }
 478}
 479
 480our $search_use_regexp = $cgi->param('sr');
 481
 482our $searchtext = $cgi->param('s');
 483our $search_regexp;
 484if (defined $searchtext) {
 485        if (length($searchtext) < 2) {
 486                die_error(undef, "At least two characters are required for search parameter");
 487        }
 488        $search_regexp = $search_use_regexp ? $searchtext : quotemeta $searchtext;
 489}
 490
 491# now read PATH_INFO and use it as alternative to parameters
 492sub evaluate_path_info {
 493        return if defined $project;
 494        my $path_info = $ENV{"PATH_INFO"};
 495        return if !$path_info;
 496        $path_info =~ s,^/+,,;
 497        return if !$path_info;
 498        # find which part of PATH_INFO is project
 499        $project = $path_info;
 500        $project =~ s,/+$,,;
 501        while ($project && !check_head_link("$projectroot/$project")) {
 502                $project =~ s,/*[^/]*$,,;
 503        }
 504        # validate project
 505        $project = validate_pathname($project);
 506        if (!$project ||
 507            ($export_ok && !-e "$projectroot/$project/$export_ok") ||
 508            ($strict_export && !project_in_list($project))) {
 509                undef $project;
 510                return;
 511        }
 512        # do not change any parameters if an action is given using the query string
 513        return if $action;
 514        $path_info =~ s,^\Q$project\E/*,,;
 515        my ($refname, $pathname) = split(/:/, $path_info, 2);
 516        if (defined $pathname) {
 517                # we got "project.git/branch:filename" or "project.git/branch:dir/"
 518                # we could use git_get_type(branch:pathname), but it needs $git_dir
 519                $pathname =~ s,^/+,,;
 520                if (!$pathname || substr($pathname, -1) eq "/") {
 521                        $action  ||= "tree";
 522                        $pathname =~ s,/$,,;
 523                } else {
 524                        $action  ||= "blob_plain";
 525                }
 526                $hash_base ||= validate_refname($refname);
 527                $file_name ||= validate_pathname($pathname);
 528        } elsif (defined $refname) {
 529                # we got "project.git/branch"
 530                $action ||= "shortlog";
 531                $hash   ||= validate_refname($refname);
 532        }
 533}
 534evaluate_path_info();
 535
 536# path to the current git repository
 537our $git_dir;
 538$git_dir = "$projectroot/$project" if $project;
 539
 540# dispatch
 541my %actions = (
 542        "blame" => \&git_blame2,
 543        "blobdiff" => \&git_blobdiff,
 544        "blobdiff_plain" => \&git_blobdiff_plain,
 545        "blob" => \&git_blob,
 546        "blob_plain" => \&git_blob_plain,
 547        "commitdiff" => \&git_commitdiff,
 548        "commitdiff_plain" => \&git_commitdiff_plain,
 549        "commit" => \&git_commit,
 550        "forks" => \&git_forks,
 551        "heads" => \&git_heads,
 552        "history" => \&git_history,
 553        "log" => \&git_log,
 554        "rss" => \&git_rss,
 555        "atom" => \&git_atom,
 556        "search" => \&git_search,
 557        "search_help" => \&git_search_help,
 558        "shortlog" => \&git_shortlog,
 559        "summary" => \&git_summary,
 560        "tag" => \&git_tag,
 561        "tags" => \&git_tags,
 562        "tree" => \&git_tree,
 563        "snapshot" => \&git_snapshot,
 564        "object" => \&git_object,
 565        # those below don't need $project
 566        "opml" => \&git_opml,
 567        "project_list" => \&git_project_list,
 568        "project_index" => \&git_project_index,
 569);
 570
 571if (!defined $action) {
 572        if (defined $hash) {
 573                $action = git_get_type($hash);
 574        } elsif (defined $hash_base && defined $file_name) {
 575                $action = git_get_type("$hash_base:$file_name");
 576        } elsif (defined $project) {
 577                $action = 'summary';
 578        } else {
 579                $action = 'project_list';
 580        }
 581}
 582if (!defined($actions{$action})) {
 583        die_error(undef, "Unknown action");
 584}
 585if ($action !~ m/^(opml|project_list|project_index)$/ &&
 586    !$project) {
 587        die_error(undef, "Project needed");
 588}
 589$actions{$action}->();
 590exit;
 591
 592## ======================================================================
 593## action links
 594
 595sub href(%) {
 596        my %params = @_;
 597        # default is to use -absolute url() i.e. $my_uri
 598        my $href = $params{-full} ? $my_url : $my_uri;
 599
 600        # XXX: Warning: If you touch this, check the search form for updating,
 601        # too.
 602
 603        my @mapping = (
 604                project => "p",
 605                action => "a",
 606                file_name => "f",
 607                file_parent => "fp",
 608                hash => "h",
 609                hash_parent => "hp",
 610                hash_base => "hb",
 611                hash_parent_base => "hpb",
 612                page => "pg",
 613                order => "o",
 614                searchtext => "s",
 615                searchtype => "st",
 616                snapshot_format => "sf",
 617                extra_options => "opt",
 618                search_use_regexp => "sr",
 619        );
 620        my %mapping = @mapping;
 621
 622        $params{'project'} = $project unless exists $params{'project'};
 623
 624        if ($params{-replay}) {
 625                while (my ($name, $symbol) = each %mapping) {
 626                        if (!exists $params{$name}) {
 627                                # to allow for multivalued params we use arrayref form
 628                                $params{$name} = [ $cgi->param($symbol) ];
 629                        }
 630                }
 631        }
 632
 633        my ($use_pathinfo) = gitweb_check_feature('pathinfo');
 634        if ($use_pathinfo) {
 635                # use PATH_INFO for project name
 636                $href .= "/".esc_url($params{'project'}) if defined $params{'project'};
 637                delete $params{'project'};
 638
 639                # Summary just uses the project path URL
 640                if (defined $params{'action'} && $params{'action'} eq 'summary') {
 641                        delete $params{'action'};
 642                }
 643        }
 644
 645        # now encode the parameters explicitly
 646        my @result = ();
 647        for (my $i = 0; $i < @mapping; $i += 2) {
 648                my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 649                if (defined $params{$name}) {
 650                        if (ref($params{$name}) eq "ARRAY") {
 651                                foreach my $par (@{$params{$name}}) {
 652                                        push @result, $symbol . "=" . esc_param($par);
 653                                }
 654                        } else {
 655                                push @result, $symbol . "=" . esc_param($params{$name});
 656                        }
 657                }
 658        }
 659        $href .= "?" . join(';', @result) if scalar @result;
 660
 661        return $href;
 662}
 663
 664
 665## ======================================================================
 666## validation, quoting/unquoting and escaping
 667
 668sub validate_pathname {
 669        my $input = shift || return undef;
 670
 671        # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 672        # at the beginning, at the end, and between slashes.
 673        # also this catches doubled slashes
 674        if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 675                return undef;
 676        }
 677        # no null characters
 678        if ($input =~ m!\0!) {
 679                return undef;
 680        }
 681        return $input;
 682}
 683
 684sub validate_refname {
 685        my $input = shift || return undef;
 686
 687        # textual hashes are O.K.
 688        if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 689                return $input;
 690        }
 691        # it must be correct pathname
 692        $input = validate_pathname($input)
 693                or return undef;
 694        # restrictions on ref name according to git-check-ref-format
 695        if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 696                return undef;
 697        }
 698        return $input;
 699}
 700
 701# decode sequences of octets in utf8 into Perl's internal form,
 702# which is utf-8 with utf8 flag set if needed.  gitweb writes out
 703# in utf-8 thanks to "binmode STDOUT, ':utf8'" at beginning
 704sub to_utf8 {
 705        my $str = shift;
 706        if (utf8::valid($str)) {
 707                utf8::decode($str);
 708                return $str;
 709        } else {
 710                return decode($fallback_encoding, $str, Encode::FB_DEFAULT);
 711        }
 712}
 713
 714# quote unsafe chars, but keep the slash, even when it's not
 715# correct, but quoted slashes look too horrible in bookmarks
 716sub esc_param {
 717        my $str = shift;
 718        $str =~ s/([^A-Za-z0-9\-_.~()\/:@])/sprintf("%%%02X", ord($1))/eg;
 719        $str =~ s/\+/%2B/g;
 720        $str =~ s/ /\+/g;
 721        return $str;
 722}
 723
 724# quote unsafe chars in whole URL, so some charactrs cannot be quoted
 725sub esc_url {
 726        my $str = shift;
 727        $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 728        $str =~ s/\+/%2B/g;
 729        $str =~ s/ /\+/g;
 730        return $str;
 731}
 732
 733# replace invalid utf8 character with SUBSTITUTION sequence
 734sub esc_html ($;%) {
 735        my $str = shift;
 736        my %opts = @_;
 737
 738        $str = to_utf8($str);
 739        $str = $cgi->escapeHTML($str);
 740        if ($opts{'-nbsp'}) {
 741                $str =~ s/ /&nbsp;/g;
 742        }
 743        $str =~ s|([[:cntrl:]])|(($1 ne "\t") ? quot_cec($1) : $1)|eg;
 744        return $str;
 745}
 746
 747# quote control characters and escape filename to HTML
 748sub esc_path {
 749        my $str = shift;
 750        my %opts = @_;
 751
 752        $str = to_utf8($str);
 753        $str = $cgi->escapeHTML($str);
 754        if ($opts{'-nbsp'}) {
 755                $str =~ s/ /&nbsp;/g;
 756        }
 757        $str =~ s|([[:cntrl:]])|quot_cec($1)|eg;
 758        return $str;
 759}
 760
 761# Make control characters "printable", using character escape codes (CEC)
 762sub quot_cec {
 763        my $cntrl = shift;
 764        my %opts = @_;
 765        my %es = ( # character escape codes, aka escape sequences
 766                "\t" => '\t',   # tab            (HT)
 767                "\n" => '\n',   # line feed      (LF)
 768                "\r" => '\r',   # carrige return (CR)
 769                "\f" => '\f',   # form feed      (FF)
 770                "\b" => '\b',   # backspace      (BS)
 771                "\a" => '\a',   # alarm (bell)   (BEL)
 772                "\e" => '\e',   # escape         (ESC)
 773                "\013" => '\v', # vertical tab   (VT)
 774                "\000" => '\0', # nul character  (NUL)
 775        );
 776        my $chr = ( (exists $es{$cntrl})
 777                    ? $es{$cntrl}
 778                    : sprintf('\%03o', ord($cntrl)) );
 779        if ($opts{-nohtml}) {
 780                return $chr;
 781        } else {
 782                return "<span class=\"cntrl\">$chr</span>";
 783        }
 784}
 785
 786# Alternatively use unicode control pictures codepoints,
 787# Unicode "printable representation" (PR)
 788sub quot_upr {
 789        my $cntrl = shift;
 790        my %opts = @_;
 791
 792        my $chr = sprintf('&#%04d;', 0x2400+ord($cntrl));
 793        if ($opts{-nohtml}) {
 794                return $chr;
 795        } else {
 796                return "<span class=\"cntrl\">$chr</span>";
 797        }
 798}
 799
 800# git may return quoted and escaped filenames
 801sub unquote {
 802        my $str = shift;
 803
 804        sub unq {
 805                my $seq = shift;
 806                my %es = ( # character escape codes, aka escape sequences
 807                        't' => "\t",   # tab            (HT, TAB)
 808                        'n' => "\n",   # newline        (NL)
 809                        'r' => "\r",   # return         (CR)
 810                        'f' => "\f",   # form feed      (FF)
 811                        'b' => "\b",   # backspace      (BS)
 812                        'a' => "\a",   # alarm (bell)   (BEL)
 813                        'e' => "\e",   # escape         (ESC)
 814                        'v' => "\013", # vertical tab   (VT)
 815                );
 816
 817                if ($seq =~ m/^[0-7]{1,3}$/) {
 818                        # octal char sequence
 819                        return chr(oct($seq));
 820                } elsif (exists $es{$seq}) {
 821                        # C escape sequence, aka character escape code
 822                        return $es{$seq};
 823                }
 824                # quoted ordinary character
 825                return $seq;
 826        }
 827
 828        if ($str =~ m/^"(.*)"$/) {
 829                # needs unquoting
 830                $str = $1;
 831                $str =~ s/\\([^0-7]|[0-7]{1,3})/unq($1)/eg;
 832        }
 833        return $str;
 834}
 835
 836# escape tabs (convert tabs to spaces)
 837sub untabify {
 838        my $line = shift;
 839
 840        while ((my $pos = index($line, "\t")) != -1) {
 841                if (my $count = (8 - ($pos % 8))) {
 842                        my $spaces = ' ' x $count;
 843                        $line =~ s/\t/$spaces/;
 844                }
 845        }
 846
 847        return $line;
 848}
 849
 850sub project_in_list {
 851        my $project = shift;
 852        my @list = git_get_projects_list();
 853        return @list && scalar(grep { $_->{'path'} eq $project } @list);
 854}
 855
 856## ----------------------------------------------------------------------
 857## HTML aware string manipulation
 858
 859# Try to chop given string on a word boundary between position
 860# $len and $len+$add_len. If there is no word boundary there,
 861# chop at $len+$add_len. Do not chop if chopped part plus ellipsis
 862# (marking chopped part) would be longer than given string.
 863sub chop_str {
 864        my $str = shift;
 865        my $len = shift;
 866        my $add_len = shift || 10;
 867        my $where = shift || 'right'; # 'left' | 'center' | 'right'
 868
 869        # allow only $len chars, but don't cut a word if it would fit in $add_len
 870        # if it doesn't fit, cut it if it's still longer than the dots we would add
 871        # remove chopped character entities entirely
 872
 873        # when chopping in the middle, distribute $len into left and right part
 874        # return early if chopping wouldn't make string shorter
 875        if ($where eq 'center') {
 876                return $str if ($len + 5 >= length($str)); # filler is length 5
 877                $len = int($len/2);
 878        } else {
 879                return $str if ($len + 4 >= length($str)); # filler is length 4
 880        }
 881
 882        # regexps: ending and beginning with word part up to $add_len
 883        my $endre = qr/.{$len}\w{0,$add_len}/;
 884        my $begre = qr/\w{0,$add_len}.{$len}/;
 885
 886        if ($where eq 'left') {
 887                $str =~ m/^(.*?)($begre)$/;
 888                my ($lead, $body) = ($1, $2);
 889                if (length($lead) > 4) {
 890                        $body =~ s/^[^;]*;// if ($lead =~ m/&[^;]*$/);
 891                        $lead = " ...";
 892                }
 893                return "$lead$body";
 894
 895        } elsif ($where eq 'center') {
 896                $str =~ m/^($endre)(.*)$/;
 897                my ($left, $str)  = ($1, $2);
 898                $str =~ m/^(.*?)($begre)$/;
 899                my ($mid, $right) = ($1, $2);
 900                if (length($mid) > 5) {
 901                        $left  =~ s/&[^;]*$//;
 902                        $right =~ s/^[^;]*;// if ($mid =~ m/&[^;]*$/);
 903                        $mid = " ... ";
 904                }
 905                return "$left$mid$right";
 906
 907        } else {
 908                $str =~ m/^($endre)(.*)$/;
 909                my $body = $1;
 910                my $tail = $2;
 911                if (length($tail) > 4) {
 912                        $body =~ s/&[^;]*$//;
 913                        $tail = "... ";
 914                }
 915                return "$body$tail";
 916        }
 917}
 918
 919# takes the same arguments as chop_str, but also wraps a <span> around the
 920# result with a title attribute if it does get chopped. Additionally, the
 921# string is HTML-escaped.
 922sub chop_and_escape_str {
 923        my ($str) = @_;
 924
 925        my $chopped = chop_str(@_);
 926        if ($chopped eq $str) {
 927                return esc_html($chopped);
 928        } else {
 929                $str =~ s/([[:cntrl:]])/?/g;
 930                return $cgi->span({-title=>$str}, esc_html($chopped));
 931        }
 932}
 933
 934## ----------------------------------------------------------------------
 935## functions returning short strings
 936
 937# CSS class for given age value (in seconds)
 938sub age_class {
 939        my $age = shift;
 940
 941        if (!defined $age) {
 942                return "noage";
 943        } elsif ($age < 60*60*2) {
 944                return "age0";
 945        } elsif ($age < 60*60*24*2) {
 946                return "age1";
 947        } else {
 948                return "age2";
 949        }
 950}
 951
 952# convert age in seconds to "nn units ago" string
 953sub age_string {
 954        my $age = shift;
 955        my $age_str;
 956
 957        if ($age > 60*60*24*365*2) {
 958                $age_str = (int $age/60/60/24/365);
 959                $age_str .= " years ago";
 960        } elsif ($age > 60*60*24*(365/12)*2) {
 961                $age_str = int $age/60/60/24/(365/12);
 962                $age_str .= " months ago";
 963        } elsif ($age > 60*60*24*7*2) {
 964                $age_str = int $age/60/60/24/7;
 965                $age_str .= " weeks ago";
 966        } elsif ($age > 60*60*24*2) {
 967                $age_str = int $age/60/60/24;
 968                $age_str .= " days ago";
 969        } elsif ($age > 60*60*2) {
 970                $age_str = int $age/60/60;
 971                $age_str .= " hours ago";
 972        } elsif ($age > 60*2) {
 973                $age_str = int $age/60;
 974                $age_str .= " min ago";
 975        } elsif ($age > 2) {
 976                $age_str = int $age;
 977                $age_str .= " sec ago";
 978        } else {
 979                $age_str .= " right now";
 980        }
 981        return $age_str;
 982}
 983
 984use constant {
 985        S_IFINVALID => 0030000,
 986        S_IFGITLINK => 0160000,
 987};
 988
 989# submodule/subproject, a commit object reference
 990sub S_ISGITLINK($) {
 991        my $mode = shift;
 992
 993        return (($mode & S_IFMT) == S_IFGITLINK)
 994}
 995
 996# convert file mode in octal to symbolic file mode string
 997sub mode_str {
 998        my $mode = oct shift;
 999
1000        if (S_ISGITLINK($mode)) {
1001                return 'm---------';
1002        } elsif (S_ISDIR($mode & S_IFMT)) {
1003                return 'drwxr-xr-x';
1004        } elsif (S_ISLNK($mode)) {
1005                return 'lrwxrwxrwx';
1006        } elsif (S_ISREG($mode)) {
1007                # git cares only about the executable bit
1008                if ($mode & S_IXUSR) {
1009                        return '-rwxr-xr-x';
1010                } else {
1011                        return '-rw-r--r--';
1012                };
1013        } else {
1014                return '----------';
1015        }
1016}
1017
1018# convert file mode in octal to file type string
1019sub file_type {
1020        my $mode = shift;
1021
1022        if ($mode !~ m/^[0-7]+$/) {
1023                return $mode;
1024        } else {
1025                $mode = oct $mode;
1026        }
1027
1028        if (S_ISGITLINK($mode)) {
1029                return "submodule";
1030        } elsif (S_ISDIR($mode & S_IFMT)) {
1031                return "directory";
1032        } elsif (S_ISLNK($mode)) {
1033                return "symlink";
1034        } elsif (S_ISREG($mode)) {
1035                return "file";
1036        } else {
1037                return "unknown";
1038        }
1039}
1040
1041# convert file mode in octal to file type description string
1042sub file_type_long {
1043        my $mode = shift;
1044
1045        if ($mode !~ m/^[0-7]+$/) {
1046                return $mode;
1047        } else {
1048                $mode = oct $mode;
1049        }
1050
1051        if (S_ISGITLINK($mode)) {
1052                return "submodule";
1053        } elsif (S_ISDIR($mode & S_IFMT)) {
1054                return "directory";
1055        } elsif (S_ISLNK($mode)) {
1056                return "symlink";
1057        } elsif (S_ISREG($mode)) {
1058                if ($mode & S_IXUSR) {
1059                        return "executable";
1060                } else {
1061                        return "file";
1062                };
1063        } else {
1064                return "unknown";
1065        }
1066}
1067
1068
1069## ----------------------------------------------------------------------
1070## functions returning short HTML fragments, or transforming HTML fragments
1071## which don't belong to other sections
1072
1073# format line of commit message.
1074sub format_log_line_html {
1075        my $line = shift;
1076
1077        $line = esc_html($line, -nbsp=>1);
1078        if ($line =~ m/([0-9a-fA-F]{8,40})/) {
1079                my $hash_text = $1;
1080                my $link =
1081                        $cgi->a({-href => href(action=>"object", hash=>$hash_text),
1082                                -class => "text"}, $hash_text);
1083                $line =~ s/$hash_text/$link/;
1084        }
1085        return $line;
1086}
1087
1088# format marker of refs pointing to given object
1089sub format_ref_marker {
1090        my ($refs, $id) = @_;
1091        my $markers = '';
1092
1093        if (defined $refs->{$id}) {
1094                foreach my $ref (@{$refs->{$id}}) {
1095                        my ($type, $name) = qw();
1096                        # e.g. tags/v2.6.11 or heads/next
1097                        if ($ref =~ m!^(.*?)s?/(.*)$!) {
1098                                $type = $1;
1099                                $name = $2;
1100                        } else {
1101                                $type = "ref";
1102                                $name = $ref;
1103                        }
1104
1105                        $markers .= " <span class=\"$type\" title=\"$ref\">" .
1106                                    esc_html($name) . "</span>";
1107                }
1108        }
1109
1110        if ($markers) {
1111                return ' <span class="refs">'. $markers . '</span>';
1112        } else {
1113                return "";
1114        }
1115}
1116
1117# format, perhaps shortened and with markers, title line
1118sub format_subject_html {
1119        my ($long, $short, $href, $extra) = @_;
1120        $extra = '' unless defined($extra);
1121
1122        if (length($short) < length($long)) {
1123                return $cgi->a({-href => $href, -class => "list subject",
1124                                -title => to_utf8($long)},
1125                       esc_html($short) . $extra);
1126        } else {
1127                return $cgi->a({-href => $href, -class => "list subject"},
1128                       esc_html($long)  . $extra);
1129        }
1130}
1131
1132# format git diff header line, i.e. "diff --(git|combined|cc) ..."
1133sub format_git_diff_header_line {
1134        my $line = shift;
1135        my $diffinfo = shift;
1136        my ($from, $to) = @_;
1137
1138        if ($diffinfo->{'nparents'}) {
1139                # combined diff
1140                $line =~ s!^(diff (.*?) )"?.*$!$1!;
1141                if ($to->{'href'}) {
1142                        $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
1143                                         esc_path($to->{'file'}));
1144                } else { # file was deleted (no href)
1145                        $line .= esc_path($to->{'file'});
1146                }
1147        } else {
1148                # "ordinary" diff
1149                $line =~ s!^(diff (.*?) )"?a/.*$!$1!;
1150                if ($from->{'href'}) {
1151                        $line .= $cgi->a({-href => $from->{'href'}, -class => "path"},
1152                                         'a/' . esc_path($from->{'file'}));
1153                } else { # file was added (no href)
1154                        $line .= 'a/' . esc_path($from->{'file'});
1155                }
1156                $line .= ' ';
1157                if ($to->{'href'}) {
1158                        $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
1159                                         'b/' . esc_path($to->{'file'}));
1160                } else { # file was deleted
1161                        $line .= 'b/' . esc_path($to->{'file'});
1162                }
1163        }
1164
1165        return "<div class=\"diff header\">$line</div>\n";
1166}
1167
1168# format extended diff header line, before patch itself
1169sub format_extended_diff_header_line {
1170        my $line = shift;
1171        my $diffinfo = shift;
1172        my ($from, $to) = @_;
1173
1174        # match <path>
1175        if ($line =~ s!^((copy|rename) from ).*$!$1! && $from->{'href'}) {
1176                $line .= $cgi->a({-href=>$from->{'href'}, -class=>"path"},
1177                                       esc_path($from->{'file'}));
1178        }
1179        if ($line =~ s!^((copy|rename) to ).*$!$1! && $to->{'href'}) {
1180                $line .= $cgi->a({-href=>$to->{'href'}, -class=>"path"},
1181                                 esc_path($to->{'file'}));
1182        }
1183        # match single <mode>
1184        if ($line =~ m/\s(\d{6})$/) {
1185                $line .= '<span class="info"> (' .
1186                         file_type_long($1) .
1187                         ')</span>';
1188        }
1189        # match <hash>
1190        if ($line =~ m/^index [0-9a-fA-F]{40},[0-9a-fA-F]{40}/) {
1191                # can match only for combined diff
1192                $line = 'index ';
1193                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
1194                        if ($from->{'href'}[$i]) {
1195                                $line .= $cgi->a({-href=>$from->{'href'}[$i],
1196                                                  -class=>"hash"},
1197                                                 substr($diffinfo->{'from_id'}[$i],0,7));
1198                        } else {
1199                                $line .= '0' x 7;
1200                        }
1201                        # separator
1202                        $line .= ',' if ($i < $diffinfo->{'nparents'} - 1);
1203                }
1204                $line .= '..';
1205                if ($to->{'href'}) {
1206                        $line .= $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
1207                                         substr($diffinfo->{'to_id'},0,7));
1208                } else {
1209                        $line .= '0' x 7;
1210                }
1211
1212        } elsif ($line =~ m/^index [0-9a-fA-F]{40}..[0-9a-fA-F]{40}/) {
1213                # can match only for ordinary diff
1214                my ($from_link, $to_link);
1215                if ($from->{'href'}) {
1216                        $from_link = $cgi->a({-href=>$from->{'href'}, -class=>"hash"},
1217                                             substr($diffinfo->{'from_id'},0,7));
1218                } else {
1219                        $from_link = '0' x 7;
1220                }
1221                if ($to->{'href'}) {
1222                        $to_link = $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
1223                                           substr($diffinfo->{'to_id'},0,7));
1224                } else {
1225                        $to_link = '0' x 7;
1226                }
1227                my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
1228                $line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
1229        }
1230
1231        return $line . "<br/>\n";
1232}
1233
1234# format from-file/to-file diff header
1235sub format_diff_from_to_header {
1236        my ($from_line, $to_line, $diffinfo, $from, $to, @parents) = @_;
1237        my $line;
1238        my $result = '';
1239
1240        $line = $from_line;
1241        #assert($line =~ m/^---/) if DEBUG;
1242        # no extra formatting for "^--- /dev/null"
1243        if (! $diffinfo->{'nparents'}) {
1244                # ordinary (single parent) diff
1245                if ($line =~ m!^--- "?a/!) {
1246                        if ($from->{'href'}) {
1247                                $line = '--- a/' .
1248                                        $cgi->a({-href=>$from->{'href'}, -class=>"path"},
1249                                                esc_path($from->{'file'}));
1250                        } else {
1251                                $line = '--- a/' .
1252                                        esc_path($from->{'file'});
1253                        }
1254                }
1255                $result .= qq!<div class="diff from_file">$line</div>\n!;
1256
1257        } else {
1258                # combined diff (merge commit)
1259                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
1260                        if ($from->{'href'}[$i]) {
1261                                $line = '--- ' .
1262                                        $cgi->a({-href=>href(action=>"blobdiff",
1263                                                             hash_parent=>$diffinfo->{'from_id'}[$i],
1264                                                             hash_parent_base=>$parents[$i],
1265                                                             file_parent=>$from->{'file'}[$i],
1266                                                             hash=>$diffinfo->{'to_id'},
1267                                                             hash_base=>$hash,
1268                                                             file_name=>$to->{'file'}),
1269                                                 -class=>"path",
1270                                                 -title=>"diff" . ($i+1)},
1271                                                $i+1) .
1272                                        '/' .
1273                                        $cgi->a({-href=>$from->{'href'}[$i], -class=>"path"},
1274                                                esc_path($from->{'file'}[$i]));
1275                        } else {
1276                                $line = '--- /dev/null';
1277                        }
1278                        $result .= qq!<div class="diff from_file">$line</div>\n!;
1279                }
1280        }
1281
1282        $line = $to_line;
1283        #assert($line =~ m/^\+\+\+/) if DEBUG;
1284        # no extra formatting for "^+++ /dev/null"
1285        if ($line =~ m!^\+\+\+ "?b/!) {
1286                if ($to->{'href'}) {
1287                        $line = '+++ b/' .
1288                                $cgi->a({-href=>$to->{'href'}, -class=>"path"},
1289                                        esc_path($to->{'file'}));
1290                } else {
1291                        $line = '+++ b/' .
1292                                esc_path($to->{'file'});
1293                }
1294        }
1295        $result .= qq!<div class="diff to_file">$line</div>\n!;
1296
1297        return $result;
1298}
1299
1300# create note for patch simplified by combined diff
1301sub format_diff_cc_simplified {
1302        my ($diffinfo, @parents) = @_;
1303        my $result = '';
1304
1305        $result .= "<div class=\"diff header\">" .
1306                   "diff --cc ";
1307        if (!is_deleted($diffinfo)) {
1308                $result .= $cgi->a({-href => href(action=>"blob",
1309                                                  hash_base=>$hash,
1310                                                  hash=>$diffinfo->{'to_id'},
1311                                                  file_name=>$diffinfo->{'to_file'}),
1312                                    -class => "path"},
1313                                   esc_path($diffinfo->{'to_file'}));
1314        } else {
1315                $result .= esc_path($diffinfo->{'to_file'});
1316        }
1317        $result .= "</div>\n" . # class="diff header"
1318                   "<div class=\"diff nodifferences\">" .
1319                   "Simple merge" .
1320                   "</div>\n"; # class="diff nodifferences"
1321
1322        return $result;
1323}
1324
1325# format patch (diff) line (not to be used for diff headers)
1326sub format_diff_line {
1327        my $line = shift;
1328        my ($from, $to) = @_;
1329        my $diff_class = "";
1330
1331        chomp $line;
1332
1333        if ($from && $to && ref($from->{'href'}) eq "ARRAY") {
1334                # combined diff
1335                my $prefix = substr($line, 0, scalar @{$from->{'href'}});
1336                if ($line =~ m/^\@{3}/) {
1337                        $diff_class = " chunk_header";
1338                } elsif ($line =~ m/^\\/) {
1339                        $diff_class = " incomplete";
1340                } elsif ($prefix =~ tr/+/+/) {
1341                        $diff_class = " add";
1342                } elsif ($prefix =~ tr/-/-/) {
1343                        $diff_class = " rem";
1344                }
1345        } else {
1346                # assume ordinary diff
1347                my $char = substr($line, 0, 1);
1348                if ($char eq '+') {
1349                        $diff_class = " add";
1350                } elsif ($char eq '-') {
1351                        $diff_class = " rem";
1352                } elsif ($char eq '@') {
1353                        $diff_class = " chunk_header";
1354                } elsif ($char eq "\\") {
1355                        $diff_class = " incomplete";
1356                }
1357        }
1358        $line = untabify($line);
1359        if ($from && $to && $line =~ m/^\@{2} /) {
1360                my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
1361                        $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
1362
1363                $from_lines = 0 unless defined $from_lines;
1364                $to_lines   = 0 unless defined $to_lines;
1365
1366                if ($from->{'href'}) {
1367                        $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
1368                                             -class=>"list"}, $from_text);
1369                }
1370                if ($to->{'href'}) {
1371                        $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
1372                                             -class=>"list"}, $to_text);
1373                }
1374                $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
1375                        "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
1376                return "<div class=\"diff$diff_class\">$line</div>\n";
1377        } elsif ($from && $to && $line =~ m/^\@{3}/) {
1378                my ($prefix, $ranges, $section) = $line =~ m/^(\@+) (.*?) \@+(.*)$/;
1379                my (@from_text, @from_start, @from_nlines, $to_text, $to_start, $to_nlines);
1380
1381                @from_text = split(' ', $ranges);
1382                for (my $i = 0; $i < @from_text; ++$i) {
1383                        ($from_start[$i], $from_nlines[$i]) =
1384                                (split(',', substr($from_text[$i], 1)), 0);
1385                }
1386
1387                $to_text   = pop @from_text;
1388                $to_start  = pop @from_start;
1389                $to_nlines = pop @from_nlines;
1390
1391                $line = "<span class=\"chunk_info\">$prefix ";
1392                for (my $i = 0; $i < @from_text; ++$i) {
1393                        if ($from->{'href'}[$i]) {
1394                                $line .= $cgi->a({-href=>"$from->{'href'}[$i]#l$from_start[$i]",
1395                                                  -class=>"list"}, $from_text[$i]);
1396                        } else {
1397                                $line .= $from_text[$i];
1398                        }
1399                        $line .= " ";
1400                }
1401                if ($to->{'href'}) {
1402                        $line .= $cgi->a({-href=>"$to->{'href'}#l$to_start",
1403                                          -class=>"list"}, $to_text);
1404                } else {
1405                        $line .= $to_text;
1406                }
1407                $line .= " $prefix</span>" .
1408                         "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
1409                return "<div class=\"diff$diff_class\">$line</div>\n";
1410        }
1411        return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
1412}
1413
1414# Generates undef or something like "_snapshot_" or "snapshot (_tbz2_ _zip_)",
1415# linked.  Pass the hash of the tree/commit to snapshot.
1416sub format_snapshot_links {
1417        my ($hash) = @_;
1418        my @snapshot_fmts = gitweb_check_feature('snapshot');
1419        @snapshot_fmts = filter_snapshot_fmts(@snapshot_fmts);
1420        my $num_fmts = @snapshot_fmts;
1421        if ($num_fmts > 1) {
1422                # A parenthesized list of links bearing format names.
1423                # e.g. "snapshot (_tar.gz_ _zip_)"
1424                return "snapshot (" . join(' ', map
1425                        $cgi->a({
1426                                -href => href(
1427                                        action=>"snapshot",
1428                                        hash=>$hash,
1429                                        snapshot_format=>$_
1430                                )
1431                        }, $known_snapshot_formats{$_}{'display'})
1432                , @snapshot_fmts) . ")";
1433        } elsif ($num_fmts == 1) {
1434                # A single "snapshot" link whose tooltip bears the format name.
1435                # i.e. "_snapshot_"
1436                my ($fmt) = @snapshot_fmts;
1437                return
1438                        $cgi->a({
1439                                -href => href(
1440                                        action=>"snapshot",
1441                                        hash=>$hash,
1442                                        snapshot_format=>$fmt
1443                                ),
1444                                -title => "in format: $known_snapshot_formats{$fmt}{'display'}"
1445                        }, "snapshot");
1446        } else { # $num_fmts == 0
1447                return undef;
1448        }
1449}
1450
1451## ----------------------------------------------------------------------
1452## git utility subroutines, invoking git commands
1453
1454# returns path to the core git executable and the --git-dir parameter as list
1455sub git_cmd {
1456        return $GIT, '--git-dir='.$git_dir;
1457}
1458
1459# returns path to the core git executable and the --git-dir parameter as string
1460sub git_cmd_str {
1461        return join(' ', git_cmd());
1462}
1463
1464# get HEAD ref of given project as hash
1465sub git_get_head_hash {
1466        my $project = shift;
1467        my $o_git_dir = $git_dir;
1468        my $retval = undef;
1469        $git_dir = "$projectroot/$project";
1470        if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
1471                my $head = <$fd>;
1472                close $fd;
1473                if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
1474                        $retval = $1;
1475                }
1476        }
1477        if (defined $o_git_dir) {
1478                $git_dir = $o_git_dir;
1479        }
1480        return $retval;
1481}
1482
1483# get type of given object
1484sub git_get_type {
1485        my $hash = shift;
1486
1487        open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
1488        my $type = <$fd>;
1489        close $fd or return;
1490        chomp $type;
1491        return $type;
1492}
1493
1494# repository configuration
1495our $config_file = '';
1496our %config;
1497
1498# store multiple values for single key as anonymous array reference
1499# single values stored directly in the hash, not as [ <value> ]
1500sub hash_set_multi {
1501        my ($hash, $key, $value) = @_;
1502
1503        if (!exists $hash->{$key}) {
1504                $hash->{$key} = $value;
1505        } elsif (!ref $hash->{$key}) {
1506                $hash->{$key} = [ $hash->{$key}, $value ];
1507        } else {
1508                push @{$hash->{$key}}, $value;
1509        }
1510}
1511
1512# return hash of git project configuration
1513# optionally limited to some section, e.g. 'gitweb'
1514sub git_parse_project_config {
1515        my $section_regexp = shift;
1516        my %config;
1517
1518        local $/ = "\0";
1519
1520        open my $fh, "-|", git_cmd(), "config", '-z', '-l',
1521                or return;
1522
1523        while (my $keyval = <$fh>) {
1524                chomp $keyval;
1525                my ($key, $value) = split(/\n/, $keyval, 2);
1526
1527                hash_set_multi(\%config, $key, $value)
1528                        if (!defined $section_regexp || $key =~ /^(?:$section_regexp)\./o);
1529        }
1530        close $fh;
1531
1532        return %config;
1533}
1534
1535# convert config value to boolean, 'true' or 'false'
1536# no value, number > 0, 'true' and 'yes' values are true
1537# rest of values are treated as false (never as error)
1538sub config_to_bool {
1539        my $val = shift;
1540
1541        # strip leading and trailing whitespace
1542        $val =~ s/^\s+//;
1543        $val =~ s/\s+$//;
1544
1545        return (!defined $val ||               # section.key
1546                ($val =~ /^\d+$/ && $val) ||   # section.key = 1
1547                ($val =~ /^(?:true|yes)$/i));  # section.key = true
1548}
1549
1550# convert config value to simple decimal number
1551# an optional value suffix of 'k', 'm', or 'g' will cause the value
1552# to be multiplied by 1024, 1048576, or 1073741824
1553sub config_to_int {
1554        my $val = shift;
1555
1556        # strip leading and trailing whitespace
1557        $val =~ s/^\s+//;
1558        $val =~ s/\s+$//;
1559
1560        if (my ($num, $unit) = ($val =~ /^([0-9]*)([kmg])$/i)) {
1561                $unit = lc($unit);
1562                # unknown unit is treated as 1
1563                return $num * ($unit eq 'g' ? 1073741824 :
1564                               $unit eq 'm' ?    1048576 :
1565                               $unit eq 'k' ?       1024 : 1);
1566        }
1567        return $val;
1568}
1569
1570# convert config value to array reference, if needed
1571sub config_to_multi {
1572        my $val = shift;
1573
1574        return ref($val) ? $val : (defined($val) ? [ $val ] : []);
1575}
1576
1577sub git_get_project_config {
1578        my ($key, $type) = @_;
1579
1580        # key sanity check
1581        return unless ($key);
1582        $key =~ s/^gitweb\.//;
1583        return if ($key =~ m/\W/);
1584
1585        # type sanity check
1586        if (defined $type) {
1587                $type =~ s/^--//;
1588                $type = undef
1589                        unless ($type eq 'bool' || $type eq 'int');
1590        }
1591
1592        # get config
1593        if (!defined $config_file ||
1594            $config_file ne "$git_dir/config") {
1595                %config = git_parse_project_config('gitweb');
1596                $config_file = "$git_dir/config";
1597        }
1598
1599        # ensure given type
1600        if (!defined $type) {
1601                return $config{"gitweb.$key"};
1602        } elsif ($type eq 'bool') {
1603                # backward compatibility: 'git config --bool' returns true/false
1604                return config_to_bool($config{"gitweb.$key"}) ? 'true' : 'false';
1605        } elsif ($type eq 'int') {
1606                return config_to_int($config{"gitweb.$key"});
1607        }
1608        return $config{"gitweb.$key"};
1609}
1610
1611# get hash of given path at given ref
1612sub git_get_hash_by_path {
1613        my $base = shift;
1614        my $path = shift || return undef;
1615        my $type = shift;
1616
1617        $path =~ s,/+$,,;
1618
1619        open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
1620                or die_error(undef, "Open git-ls-tree failed");
1621        my $line = <$fd>;
1622        close $fd or return undef;
1623
1624        if (!defined $line) {
1625                # there is no tree or hash given by $path at $base
1626                return undef;
1627        }
1628
1629        #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1630        $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
1631        if (defined $type && $type ne $2) {
1632                # type doesn't match
1633                return undef;
1634        }
1635        return $3;
1636}
1637
1638# get path of entry with given hash at given tree-ish (ref)
1639# used to get 'from' filename for combined diff (merge commit) for renames
1640sub git_get_path_by_hash {
1641        my $base = shift || return;
1642        my $hash = shift || return;
1643
1644        local $/ = "\0";
1645
1646        open my $fd, "-|", git_cmd(), "ls-tree", '-r', '-t', '-z', $base
1647                or return undef;
1648        while (my $line = <$fd>) {
1649                chomp $line;
1650
1651                #'040000 tree 595596a6a9117ddba9fe379b6b012b558bac8423  gitweb'
1652                #'100644 blob e02e90f0429be0d2a69b76571101f20b8f75530f  gitweb/README'
1653                if ($line =~ m/(?:[0-9]+) (?:.+) $hash\t(.+)$/) {
1654                        close $fd;
1655                        return $1;
1656                }
1657        }
1658        close $fd;
1659        return undef;
1660}
1661
1662## ......................................................................
1663## git utility functions, directly accessing git repository
1664
1665sub git_get_project_description {
1666        my $path = shift;
1667
1668        $git_dir = "$projectroot/$path";
1669        open my $fd, "$git_dir/description"
1670                or return git_get_project_config('description');
1671        my $descr = <$fd>;
1672        close $fd;
1673        if (defined $descr) {
1674                chomp $descr;
1675        }
1676        return $descr;
1677}
1678
1679sub git_get_project_url_list {
1680        my $path = shift;
1681
1682        $git_dir = "$projectroot/$path";
1683        open my $fd, "$git_dir/cloneurl"
1684                or return wantarray ?
1685                @{ config_to_multi(git_get_project_config('url')) } :
1686                   config_to_multi(git_get_project_config('url'));
1687        my @git_project_url_list = map { chomp; $_ } <$fd>;
1688        close $fd;
1689
1690        return wantarray ? @git_project_url_list : \@git_project_url_list;
1691}
1692
1693sub git_get_projects_list {
1694        my ($filter) = @_;
1695        my @list;
1696
1697        $filter ||= '';
1698        $filter =~ s/\.git$//;
1699
1700        my ($check_forks) = gitweb_check_feature('forks');
1701
1702        if (-d $projects_list) {
1703                # search in directory
1704                my $dir = $projects_list . ($filter ? "/$filter" : '');
1705                # remove the trailing "/"
1706                $dir =~ s!/+$!!;
1707                my $pfxlen = length("$dir");
1708                my $pfxdepth = ($dir =~ tr!/!!);
1709
1710                File::Find::find({
1711                        follow_fast => 1, # follow symbolic links
1712                        follow_skip => 2, # ignore duplicates
1713                        dangling_symlinks => 0, # ignore dangling symlinks, silently
1714                        wanted => sub {
1715                                # skip project-list toplevel, if we get it.
1716                                return if (m!^[/.]$!);
1717                                # only directories can be git repositories
1718                                return unless (-d $_);
1719                                # don't traverse too deep (Find is super slow on os x)
1720                                if (($File::Find::name =~ tr!/!!) - $pfxdepth > $project_maxdepth) {
1721                                        $File::Find::prune = 1;
1722                                        return;
1723                                }
1724
1725                                my $subdir = substr($File::Find::name, $pfxlen + 1);
1726                                # we check related file in $projectroot
1727                                if ($check_forks and $subdir =~ m#/.#) {
1728                                        $File::Find::prune = 1;
1729                                } elsif (check_export_ok("$projectroot/$filter/$subdir")) {
1730                                        push @list, { path => ($filter ? "$filter/" : '') . $subdir };
1731                                        $File::Find::prune = 1;
1732                                }
1733                        },
1734                }, "$dir");
1735
1736        } elsif (-f $projects_list) {
1737                # read from file(url-encoded):
1738                # 'git%2Fgit.git Linus+Torvalds'
1739                # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1740                # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1741                my %paths;
1742                open my ($fd), $projects_list or return;
1743        PROJECT:
1744                while (my $line = <$fd>) {
1745                        chomp $line;
1746                        my ($path, $owner) = split ' ', $line;
1747                        $path = unescape($path);
1748                        $owner = unescape($owner);
1749                        if (!defined $path) {
1750                                next;
1751                        }
1752                        if ($filter ne '') {
1753                                # looking for forks;
1754                                my $pfx = substr($path, 0, length($filter));
1755                                if ($pfx ne $filter) {
1756                                        next PROJECT;
1757                                }
1758                                my $sfx = substr($path, length($filter));
1759                                if ($sfx !~ /^\/.*\.git$/) {
1760                                        next PROJECT;
1761                                }
1762                        } elsif ($check_forks) {
1763                        PATH:
1764                                foreach my $filter (keys %paths) {
1765                                        # looking for forks;
1766                                        my $pfx = substr($path, 0, length($filter));
1767                                        if ($pfx ne $filter) {
1768                                                next PATH;
1769                                        }
1770                                        my $sfx = substr($path, length($filter));
1771                                        if ($sfx !~ /^\/.*\.git$/) {
1772                                                next PATH;
1773                                        }
1774                                        # is a fork, don't include it in
1775                                        # the list
1776                                        next PROJECT;
1777                                }
1778                        }
1779                        if (check_export_ok("$projectroot/$path")) {
1780                                my $pr = {
1781                                        path => $path,
1782                                        owner => to_utf8($owner),
1783                                };
1784                                push @list, $pr;
1785                                (my $forks_path = $path) =~ s/\.git$//;
1786                                $paths{$forks_path}++;
1787                        }
1788                }
1789                close $fd;
1790        }
1791        return @list;
1792}
1793
1794our $gitweb_project_owner = undef;
1795sub git_get_project_list_from_file {
1796
1797        return if (defined $gitweb_project_owner);
1798
1799        $gitweb_project_owner = {};
1800        # read from file (url-encoded):
1801        # 'git%2Fgit.git Linus+Torvalds'
1802        # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1803        # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1804        if (-f $projects_list) {
1805                open (my $fd , $projects_list);
1806                while (my $line = <$fd>) {
1807                        chomp $line;
1808                        my ($pr, $ow) = split ' ', $line;
1809                        $pr = unescape($pr);
1810                        $ow = unescape($ow);
1811                        $gitweb_project_owner->{$pr} = to_utf8($ow);
1812                }
1813                close $fd;
1814        }
1815}
1816
1817sub git_get_project_owner {
1818        my $project = shift;
1819        my $owner;
1820
1821        return undef unless $project;
1822        $git_dir = "$projectroot/$project";
1823
1824        if (!defined $gitweb_project_owner) {
1825                git_get_project_list_from_file();
1826        }
1827
1828        if (exists $gitweb_project_owner->{$project}) {
1829                $owner = $gitweb_project_owner->{$project};
1830        }
1831        if (!defined $owner){
1832                $owner = git_get_project_config('owner');
1833        }
1834        if (!defined $owner) {
1835                $owner = get_file_owner("$git_dir");
1836        }
1837
1838        return $owner;
1839}
1840
1841sub git_get_last_activity {
1842        my ($path) = @_;
1843        my $fd;
1844
1845        $git_dir = "$projectroot/$path";
1846        open($fd, "-|", git_cmd(), 'for-each-ref',
1847             '--format=%(committer)',
1848             '--sort=-committerdate',
1849             '--count=1',
1850             'refs/heads') or return;
1851        my $most_recent = <$fd>;
1852        close $fd or return;
1853        if (defined $most_recent &&
1854            $most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1855                my $timestamp = $1;
1856                my $age = time - $timestamp;
1857                return ($age, age_string($age));
1858        }
1859        return (undef, undef);
1860}
1861
1862sub git_get_references {
1863        my $type = shift || "";
1864        my %refs;
1865        # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
1866        # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
1867        open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
1868                ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
1869                or return;
1870
1871        while (my $line = <$fd>) {
1872                chomp $line;
1873                if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type/?[^^]+)!) {
1874                        if (defined $refs{$1}) {
1875                                push @{$refs{$1}}, $2;
1876                        } else {
1877                                $refs{$1} = [ $2 ];
1878                        }
1879                }
1880        }
1881        close $fd or return;
1882        return \%refs;
1883}
1884
1885sub git_get_rev_name_tags {
1886        my $hash = shift || return undef;
1887
1888        open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1889                or return;
1890        my $name_rev = <$fd>;
1891        close $fd;
1892
1893        if ($name_rev =~ m|^$hash tags/(.*)$|) {
1894                return $1;
1895        } else {
1896                # catches also '$hash undefined' output
1897                return undef;
1898        }
1899}
1900
1901## ----------------------------------------------------------------------
1902## parse to hash functions
1903
1904sub parse_date {
1905        my $epoch = shift;
1906        my $tz = shift || "-0000";
1907
1908        my %date;
1909        my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1910        my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1911        my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1912        $date{'hour'} = $hour;
1913        $date{'minute'} = $min;
1914        $date{'mday'} = $mday;
1915        $date{'day'} = $days[$wday];
1916        $date{'month'} = $months[$mon];
1917        $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1918                             $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1919        $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1920                             $mday, $months[$mon], $hour ,$min;
1921        $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
1922                             1900+$year, 1+$mon, $mday, $hour ,$min, $sec;
1923
1924        $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1925        my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1926        ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1927        $date{'hour_local'} = $hour;
1928        $date{'minute_local'} = $min;
1929        $date{'tz_local'} = $tz;
1930        $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
1931                                  1900+$year, $mon+1, $mday,
1932                                  $hour, $min, $sec, $tz);
1933        return %date;
1934}
1935
1936sub parse_tag {
1937        my $tag_id = shift;
1938        my %tag;
1939        my @comment;
1940
1941        open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1942        $tag{'id'} = $tag_id;
1943        while (my $line = <$fd>) {
1944                chomp $line;
1945                if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1946                        $tag{'object'} = $1;
1947                } elsif ($line =~ m/^type (.+)$/) {
1948                        $tag{'type'} = $1;
1949                } elsif ($line =~ m/^tag (.+)$/) {
1950                        $tag{'name'} = $1;
1951                } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1952                        $tag{'author'} = $1;
1953                        $tag{'epoch'} = $2;
1954                        $tag{'tz'} = $3;
1955                } elsif ($line =~ m/--BEGIN/) {
1956                        push @comment, $line;
1957                        last;
1958                } elsif ($line eq "") {
1959                        last;
1960                }
1961        }
1962        push @comment, <$fd>;
1963        $tag{'comment'} = \@comment;
1964        close $fd or return;
1965        if (!defined $tag{'name'}) {
1966                return
1967        };
1968        return %tag
1969}
1970
1971sub parse_commit_text {
1972        my ($commit_text, $withparents) = @_;
1973        my @commit_lines = split '\n', $commit_text;
1974        my %co;
1975
1976        pop @commit_lines; # Remove '\0'
1977
1978        if (! @commit_lines) {
1979                return;
1980        }
1981
1982        my $header = shift @commit_lines;
1983        if ($header !~ m/^[0-9a-fA-F]{40}/) {
1984                return;
1985        }
1986        ($co{'id'}, my @parents) = split ' ', $header;
1987        while (my $line = shift @commit_lines) {
1988                last if $line eq "\n";
1989                if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1990                        $co{'tree'} = $1;
1991                } elsif ((!defined $withparents) && ($line =~ m/^parent ([0-9a-fA-F]{40})$/)) {
1992                        push @parents, $1;
1993                } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1994                        $co{'author'} = $1;
1995                        $co{'author_epoch'} = $2;
1996                        $co{'author_tz'} = $3;
1997                        if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
1998                                $co{'author_name'}  = $1;
1999                                $co{'author_email'} = $2;
2000                        } else {
2001                                $co{'author_name'} = $co{'author'};
2002                        }
2003                } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
2004                        $co{'committer'} = $1;
2005                        $co{'committer_epoch'} = $2;
2006                        $co{'committer_tz'} = $3;
2007                        $co{'committer_name'} = $co{'committer'};
2008                        if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
2009                                $co{'committer_name'}  = $1;
2010                                $co{'committer_email'} = $2;
2011                        } else {
2012                                $co{'committer_name'} = $co{'committer'};
2013                        }
2014                }
2015        }
2016        if (!defined $co{'tree'}) {
2017                return;
2018        };
2019        $co{'parents'} = \@parents;
2020        $co{'parent'} = $parents[0];
2021
2022        foreach my $title (@commit_lines) {
2023                $title =~ s/^    //;
2024                if ($title ne "") {
2025                        $co{'title'} = chop_str($title, 80, 5);
2026                        # remove leading stuff of merges to make the interesting part visible
2027                        if (length($title) > 50) {
2028                                $title =~ s/^Automatic //;
2029                                $title =~ s/^merge (of|with) /Merge ... /i;
2030                                if (length($title) > 50) {
2031                                        $title =~ s/(http|rsync):\/\///;
2032                                }
2033                                if (length($title) > 50) {
2034                                        $title =~ s/(master|www|rsync)\.//;
2035                                }
2036                                if (length($title) > 50) {
2037                                        $title =~ s/kernel.org:?//;
2038                                }
2039                                if (length($title) > 50) {
2040                                        $title =~ s/\/pub\/scm//;
2041                                }
2042                        }
2043                        $co{'title_short'} = chop_str($title, 50, 5);
2044                        last;
2045                }
2046        }
2047        if ($co{'title'} eq "") {
2048                $co{'title'} = $co{'title_short'} = '(no commit message)';
2049        }
2050        # remove added spaces
2051        foreach my $line (@commit_lines) {
2052                $line =~ s/^    //;
2053        }
2054        $co{'comment'} = \@commit_lines;
2055
2056        my $age = time - $co{'committer_epoch'};
2057        $co{'age'} = $age;
2058        $co{'age_string'} = age_string($age);
2059        my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
2060        if ($age > 60*60*24*7*2) {
2061                $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
2062                $co{'age_string_age'} = $co{'age_string'};
2063        } else {
2064                $co{'age_string_date'} = $co{'age_string'};
2065                $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
2066        }
2067        return %co;
2068}
2069
2070sub parse_commit {
2071        my ($commit_id) = @_;
2072        my %co;
2073
2074        local $/ = "\0";
2075
2076        open my $fd, "-|", git_cmd(), "rev-list",
2077                "--parents",
2078                "--header",
2079                "--max-count=1",
2080                $commit_id,
2081                "--",
2082                or die_error(undef, "Open git-rev-list failed");
2083        %co = parse_commit_text(<$fd>, 1);
2084        close $fd;
2085
2086        return %co;
2087}
2088
2089sub parse_commits {
2090        my ($commit_id, $maxcount, $skip, $filename, @args) = @_;
2091        my @cos;
2092
2093        $maxcount ||= 1;
2094        $skip ||= 0;
2095
2096        local $/ = "\0";
2097
2098        open my $fd, "-|", git_cmd(), "rev-list",
2099                "--header",
2100                @args,
2101                ("--max-count=" . $maxcount),
2102                ("--skip=" . $skip),
2103                @extra_options,
2104                $commit_id,
2105                "--",
2106                ($filename ? ($filename) : ())
2107                or die_error(undef, "Open git-rev-list failed");
2108        while (my $line = <$fd>) {
2109                my %co = parse_commit_text($line);
2110                push @cos, \%co;
2111        }
2112        close $fd;
2113
2114        return wantarray ? @cos : \@cos;
2115}
2116
2117# parse ref from ref_file, given by ref_id, with given type
2118sub parse_ref {
2119        my $ref_file = shift;
2120        my $ref_id = shift;
2121        my $type = shift || git_get_type($ref_id);
2122        my %ref_item;
2123
2124        $ref_item{'type'} = $type;
2125        $ref_item{'id'} = $ref_id;
2126        $ref_item{'epoch'} = 0;
2127        $ref_item{'age'} = "unknown";
2128        if ($type eq "tag") {
2129                my %tag = parse_tag($ref_id);
2130                $ref_item{'comment'} = $tag{'comment'};
2131                if ($tag{'type'} eq "commit") {
2132                        my %co = parse_commit($tag{'object'});
2133                        $ref_item{'epoch'} = $co{'committer_epoch'};
2134                        $ref_item{'age'} = $co{'age_string'};
2135                } elsif (defined($tag{'epoch'})) {
2136                        my $age = time - $tag{'epoch'};
2137                        $ref_item{'epoch'} = $tag{'epoch'};
2138                        $ref_item{'age'} = age_string($age);
2139                }
2140                $ref_item{'reftype'} = $tag{'type'};
2141                $ref_item{'name'} = $tag{'name'};
2142                $ref_item{'refid'} = $tag{'object'};
2143        } elsif ($type eq "commit"){
2144                my %co = parse_commit($ref_id);
2145                $ref_item{'reftype'} = "commit";
2146                $ref_item{'name'} = $ref_file;
2147                $ref_item{'title'} = $co{'title'};
2148                $ref_item{'refid'} = $ref_id;
2149                $ref_item{'epoch'} = $co{'committer_epoch'};
2150                $ref_item{'age'} = $co{'age_string'};
2151        } else {
2152                $ref_item{'reftype'} = $type;
2153                $ref_item{'name'} = $ref_file;
2154                $ref_item{'refid'} = $ref_id;
2155        }
2156
2157        return %ref_item;
2158}
2159
2160# parse line of git-diff-tree "raw" output
2161sub parse_difftree_raw_line {
2162        my $line = shift;
2163        my %res;
2164
2165        # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
2166        # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
2167        if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
2168                $res{'from_mode'} = $1;
2169                $res{'to_mode'} = $2;
2170                $res{'from_id'} = $3;
2171                $res{'to_id'} = $4;
2172                $res{'status'} = $5;
2173                $res{'similarity'} = $6;
2174                if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
2175                        ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
2176                } else {
2177                        $res{'from_file'} = $res{'to_file'} = $res{'file'} = unquote($7);
2178                }
2179        }
2180        # '::100755 100755 100755 60e79ca1b01bc8b057abe17ddab484699a7f5fdb 94067cc5f73388f33722d52ae02f44692bc07490 94067cc5f73388f33722d52ae02f44692bc07490 MR git-gui/git-gui.sh'
2181        # combined diff (for merge commit)
2182        elsif ($line =~ s/^(::+)((?:[0-7]{6} )+)((?:[0-9a-fA-F]{40} )+)([a-zA-Z]+)\t(.*)$//) {
2183                $res{'nparents'}  = length($1);
2184                $res{'from_mode'} = [ split(' ', $2) ];
2185                $res{'to_mode'} = pop @{$res{'from_mode'}};
2186                $res{'from_id'} = [ split(' ', $3) ];
2187                $res{'to_id'} = pop @{$res{'from_id'}};
2188                $res{'status'} = [ split('', $4) ];
2189                $res{'to_file'} = unquote($5);
2190        }
2191        # 'c512b523472485aef4fff9e57b229d9d243c967f'
2192        elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
2193                $res{'commit'} = $1;
2194        }
2195
2196        return wantarray ? %res : \%res;
2197}
2198
2199# wrapper: return parsed line of git-diff-tree "raw" output
2200# (the argument might be raw line, or parsed info)
2201sub parsed_difftree_line {
2202        my $line_or_ref = shift;
2203
2204        if (ref($line_or_ref) eq "HASH") {
2205                # pre-parsed (or generated by hand)
2206                return $line_or_ref;
2207        } else {
2208                return parse_difftree_raw_line($line_or_ref);
2209        }
2210}
2211
2212# parse line of git-ls-tree output
2213sub parse_ls_tree_line ($;%) {
2214        my $line = shift;
2215        my %opts = @_;
2216        my %res;
2217
2218        #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
2219        $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
2220
2221        $res{'mode'} = $1;
2222        $res{'type'} = $2;
2223        $res{'hash'} = $3;
2224        if ($opts{'-z'}) {
2225                $res{'name'} = $4;
2226        } else {
2227                $res{'name'} = unquote($4);
2228        }
2229
2230        return wantarray ? %res : \%res;
2231}
2232
2233# generates _two_ hashes, references to which are passed as 2 and 3 argument
2234sub parse_from_to_diffinfo {
2235        my ($diffinfo, $from, $to, @parents) = @_;
2236
2237        if ($diffinfo->{'nparents'}) {
2238                # combined diff
2239                $from->{'file'} = [];
2240                $from->{'href'} = [];
2241                fill_from_file_info($diffinfo, @parents)
2242                        unless exists $diffinfo->{'from_file'};
2243                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2244                        $from->{'file'}[$i] =
2245                                defined $diffinfo->{'from_file'}[$i] ?
2246                                        $diffinfo->{'from_file'}[$i] :
2247                                        $diffinfo->{'to_file'};
2248                        if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
2249                                $from->{'href'}[$i] = href(action=>"blob",
2250                                                           hash_base=>$parents[$i],
2251                                                           hash=>$diffinfo->{'from_id'}[$i],
2252                                                           file_name=>$from->{'file'}[$i]);
2253                        } else {
2254                                $from->{'href'}[$i] = undef;
2255                        }
2256                }
2257        } else {
2258                # ordinary (not combined) diff
2259                $from->{'file'} = $diffinfo->{'from_file'};
2260                if ($diffinfo->{'status'} ne "A") { # not new (added) file
2261                        $from->{'href'} = href(action=>"blob", hash_base=>$hash_parent,
2262                                               hash=>$diffinfo->{'from_id'},
2263                                               file_name=>$from->{'file'});
2264                } else {
2265                        delete $from->{'href'};
2266                }
2267        }
2268
2269        $to->{'file'} = $diffinfo->{'to_file'};
2270        if (!is_deleted($diffinfo)) { # file exists in result
2271                $to->{'href'} = href(action=>"blob", hash_base=>$hash,
2272                                     hash=>$diffinfo->{'to_id'},
2273                                     file_name=>$to->{'file'});
2274        } else {
2275                delete $to->{'href'};
2276        }
2277}
2278
2279## ......................................................................
2280## parse to array of hashes functions
2281
2282sub git_get_heads_list {
2283        my $limit = shift;
2284        my @headslist;
2285
2286        open my $fd, '-|', git_cmd(), 'for-each-ref',
2287                ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
2288                '--format=%(objectname) %(refname) %(subject)%00%(committer)',
2289                'refs/heads'
2290                or return;
2291        while (my $line = <$fd>) {
2292                my %ref_item;
2293
2294                chomp $line;
2295                my ($refinfo, $committerinfo) = split(/\0/, $line);
2296                my ($hash, $name, $title) = split(' ', $refinfo, 3);
2297                my ($committer, $epoch, $tz) =
2298                        ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
2299                $ref_item{'fullname'}  = $name;
2300                $name =~ s!^refs/heads/!!;
2301
2302                $ref_item{'name'}  = $name;
2303                $ref_item{'id'}    = $hash;
2304                $ref_item{'title'} = $title || '(no commit message)';
2305                $ref_item{'epoch'} = $epoch;
2306                if ($epoch) {
2307                        $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
2308                } else {
2309                        $ref_item{'age'} = "unknown";
2310                }
2311
2312                push @headslist, \%ref_item;
2313        }
2314        close $fd;
2315
2316        return wantarray ? @headslist : \@headslist;
2317}
2318
2319sub git_get_tags_list {
2320        my $limit = shift;
2321        my @tagslist;
2322
2323        open my $fd, '-|', git_cmd(), 'for-each-ref',
2324                ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
2325                '--format=%(objectname) %(objecttype) %(refname) '.
2326                '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
2327                'refs/tags'
2328                or return;
2329        while (my $line = <$fd>) {
2330                my %ref_item;
2331
2332                chomp $line;
2333                my ($refinfo, $creatorinfo) = split(/\0/, $line);
2334                my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
2335                my ($creator, $epoch, $tz) =
2336                        ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
2337                $ref_item{'fullname'} = $name;
2338                $name =~ s!^refs/tags/!!;
2339
2340                $ref_item{'type'} = $type;
2341                $ref_item{'id'} = $id;
2342                $ref_item{'name'} = $name;
2343                if ($type eq "tag") {
2344                        $ref_item{'subject'} = $title;
2345                        $ref_item{'reftype'} = $reftype;
2346                        $ref_item{'refid'}   = $refid;
2347                } else {
2348                        $ref_item{'reftype'} = $type;
2349                        $ref_item{'refid'}   = $id;
2350                }
2351
2352                if ($type eq "tag" || $type eq "commit") {
2353                        $ref_item{'epoch'} = $epoch;
2354                        if ($epoch) {
2355                                $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
2356                        } else {
2357                                $ref_item{'age'} = "unknown";
2358                        }
2359                }
2360
2361                push @tagslist, \%ref_item;
2362        }
2363        close $fd;
2364
2365        return wantarray ? @tagslist : \@tagslist;
2366}
2367
2368## ----------------------------------------------------------------------
2369## filesystem-related functions
2370
2371sub get_file_owner {
2372        my $path = shift;
2373
2374        my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
2375        my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
2376        if (!defined $gcos) {
2377                return undef;
2378        }
2379        my $owner = $gcos;
2380        $owner =~ s/[,;].*$//;
2381        return to_utf8($owner);
2382}
2383
2384## ......................................................................
2385## mimetype related functions
2386
2387sub mimetype_guess_file {
2388        my $filename = shift;
2389        my $mimemap = shift;
2390        -r $mimemap or return undef;
2391
2392        my %mimemap;
2393        open(MIME, $mimemap) or return undef;
2394        while (<MIME>) {
2395                next if m/^#/; # skip comments
2396                my ($mime, $exts) = split(/\t+/);
2397                if (defined $exts) {
2398                        my @exts = split(/\s+/, $exts);
2399                        foreach my $ext (@exts) {
2400                                $mimemap{$ext} = $mime;
2401                        }
2402                }
2403        }
2404        close(MIME);
2405
2406        $filename =~ /\.([^.]*)$/;
2407        return $mimemap{$1};
2408}
2409
2410sub mimetype_guess {
2411        my $filename = shift;
2412        my $mime;
2413        $filename =~ /\./ or return undef;
2414
2415        if ($mimetypes_file) {
2416                my $file = $mimetypes_file;
2417                if ($file !~ m!^/!) { # if it is relative path
2418                        # it is relative to project
2419                        $file = "$projectroot/$project/$file";
2420                }
2421                $mime = mimetype_guess_file($filename, $file);
2422        }
2423        $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
2424        return $mime;
2425}
2426
2427sub blob_mimetype {
2428        my $fd = shift;
2429        my $filename = shift;
2430
2431        if ($filename) {
2432                my $mime = mimetype_guess($filename);
2433                $mime and return $mime;
2434        }
2435
2436        # just in case
2437        return $default_blob_plain_mimetype unless $fd;
2438
2439        if (-T $fd) {
2440                return 'text/plain' .
2441                       ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
2442        } elsif (! $filename) {
2443                return 'application/octet-stream';
2444        } elsif ($filename =~ m/\.png$/i) {
2445                return 'image/png';
2446        } elsif ($filename =~ m/\.gif$/i) {
2447                return 'image/gif';
2448        } elsif ($filename =~ m/\.jpe?g$/i) {
2449                return 'image/jpeg';
2450        } else {
2451                return 'application/octet-stream';
2452        }
2453}
2454
2455## ======================================================================
2456## functions printing HTML: header, footer, error page
2457
2458sub git_header_html {
2459        my $status = shift || "200 OK";
2460        my $expires = shift;
2461
2462        my $title = "$site_name";
2463        if (defined $project) {
2464                $title .= " - " . to_utf8($project);
2465                if (defined $action) {
2466                        $title .= "/$action";
2467                        if (defined $file_name) {
2468                                $title .= " - " . esc_path($file_name);
2469                                if ($action eq "tree" && $file_name !~ m|/$|) {
2470                                        $title .= "/";
2471                                }
2472                        }
2473                }
2474        }
2475        my $content_type;
2476        # require explicit support from the UA if we are to send the page as
2477        # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
2478        # we have to do this because MSIE sometimes globs '*/*', pretending to
2479        # support xhtml+xml but choking when it gets what it asked for.
2480        if (defined $cgi->http('HTTP_ACCEPT') &&
2481            $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
2482            $cgi->Accept('application/xhtml+xml') != 0) {
2483                $content_type = 'application/xhtml+xml';
2484        } else {
2485                $content_type = 'text/html';
2486        }
2487        print $cgi->header(-type=>$content_type, -charset => 'utf-8',
2488                           -status=> $status, -expires => $expires);
2489        my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
2490        print <<EOF;
2491<?xml version="1.0" encoding="utf-8"?>
2492<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
2493<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
2494<!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
2495<!-- git core binaries version $git_version -->
2496<head>
2497<meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
2498<meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
2499<meta name="robots" content="index, nofollow"/>
2500<title>$title</title>
2501EOF
2502# print out each stylesheet that exist
2503        if (defined $stylesheet) {
2504#provides backwards capability for those people who define style sheet in a config file
2505                print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
2506        } else {
2507                foreach my $stylesheet (@stylesheets) {
2508                        next unless $stylesheet;
2509                        print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
2510                }
2511        }
2512        if (defined $project) {
2513                printf('<link rel="alternate" title="%s log RSS feed" '.
2514                       'href="%s" type="application/rss+xml" />'."\n",
2515                       esc_param($project), href(action=>"rss"));
2516                printf('<link rel="alternate" title="%s log RSS feed (no merges)" '.
2517                       'href="%s" type="application/rss+xml" />'."\n",
2518                       esc_param($project), href(action=>"rss",
2519                                                 extra_options=>"--no-merges"));
2520                printf('<link rel="alternate" title="%s log Atom feed" '.
2521                       'href="%s" type="application/atom+xml" />'."\n",
2522                       esc_param($project), href(action=>"atom"));
2523                printf('<link rel="alternate" title="%s log Atom feed (no merges)" '.
2524                       'href="%s" type="application/atom+xml" />'."\n",
2525                       esc_param($project), href(action=>"atom",
2526                                                 extra_options=>"--no-merges"));
2527        } else {
2528                printf('<link rel="alternate" title="%s projects list" '.
2529                       'href="%s" type="text/plain; charset=utf-8"/>'."\n",
2530                       $site_name, href(project=>undef, action=>"project_index"));
2531                printf('<link rel="alternate" title="%s projects feeds" '.
2532                       'href="%s" type="text/x-opml"/>'."\n",
2533                       $site_name, href(project=>undef, action=>"opml"));
2534        }
2535        if (defined $favicon) {
2536                print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
2537        }
2538
2539        print "</head>\n" .
2540              "<body>\n";
2541
2542        if (-f $site_header) {
2543                open (my $fd, $site_header);
2544                print <$fd>;
2545                close $fd;
2546        }
2547
2548        print "<div class=\"page_header\">\n" .
2549              $cgi->a({-href => esc_url($logo_url),
2550                       -title => $logo_label},
2551                      qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
2552        print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
2553        if (defined $project) {
2554                print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
2555                if (defined $action) {
2556                        print " / $action";
2557                }
2558                print "\n";
2559        }
2560        print "</div>\n";
2561
2562        my ($have_search) = gitweb_check_feature('search');
2563        if ((defined $project) && ($have_search)) {
2564                if (!defined $searchtext) {
2565                        $searchtext = "";
2566                }
2567                my $search_hash;
2568                if (defined $hash_base) {
2569                        $search_hash = $hash_base;
2570                } elsif (defined $hash) {
2571                        $search_hash = $hash;
2572                } else {
2573                        $search_hash = "HEAD";
2574                }
2575                my $action = $my_uri;
2576                my ($use_pathinfo) = gitweb_check_feature('pathinfo');
2577                if ($use_pathinfo) {
2578                        $action .= "/".esc_url($project);
2579                } else {
2580                        $cgi->param("p", $project);
2581                }
2582                $cgi->param("a", "search");
2583                $cgi->param("h", $search_hash);
2584                print $cgi->startform(-method => "get", -action => $action) .
2585                      "<div class=\"search\">\n" .
2586                      (!$use_pathinfo && $cgi->hidden(-name => "p") . "\n") .
2587                      $cgi->hidden(-name => "a") . "\n" .
2588                      $cgi->hidden(-name => "h") . "\n" .
2589                      $cgi->popup_menu(-name => 'st', -default => 'commit',
2590                                       -values => ['commit', 'grep', 'author', 'committer', 'pickaxe']) .
2591                      $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
2592                      " search:\n",
2593                      $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
2594                      "<span title=\"Extended regular expression\">" .
2595                      $cgi->checkbox(-name => 'sr', -value => 1, -label => 're',
2596                                     -checked => $search_use_regexp) .
2597                      "</span>" .
2598                      "</div>" .
2599                      $cgi->end_form() . "\n";
2600        }
2601}
2602
2603sub git_footer_html {
2604        print "<div class=\"page_footer\">\n";
2605        if (defined $project) {
2606                my $descr = git_get_project_description($project);
2607                if (defined $descr) {
2608                        print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
2609                }
2610                print $cgi->a({-href => href(action=>"rss"),
2611                              -class => "rss_logo"}, "RSS") . " ";
2612                print $cgi->a({-href => href(action=>"atom"),
2613                              -class => "rss_logo"}, "Atom") . "\n";
2614        } else {
2615                print $cgi->a({-href => href(project=>undef, action=>"opml"),
2616                              -class => "rss_logo"}, "OPML") . " ";
2617                print $cgi->a({-href => href(project=>undef, action=>"project_index"),
2618                              -class => "rss_logo"}, "TXT") . "\n";
2619        }
2620        print "</div>\n" ;
2621
2622        if (-f $site_footer) {
2623                open (my $fd, $site_footer);
2624                print <$fd>;
2625                close $fd;
2626        }
2627
2628        print "</body>\n" .
2629              "</html>";
2630}
2631
2632sub die_error {
2633        my $status = shift || "403 Forbidden";
2634        my $error = shift || "Malformed query, file missing or permission denied";
2635
2636        git_header_html($status);
2637        print <<EOF;
2638<div class="page_body">
2639<br /><br />
2640$status - $error
2641<br />
2642</div>
2643EOF
2644        git_footer_html();
2645        exit;
2646}
2647
2648## ----------------------------------------------------------------------
2649## functions printing or outputting HTML: navigation
2650
2651sub git_print_page_nav {
2652        my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
2653        $extra = '' if !defined $extra; # pager or formats
2654
2655        my @navs = qw(summary shortlog log commit commitdiff tree);
2656        if ($suppress) {
2657                @navs = grep { $_ ne $suppress } @navs;
2658        }
2659
2660        my %arg = map { $_ => {action=>$_} } @navs;
2661        if (defined $head) {
2662                for (qw(commit commitdiff)) {
2663                        $arg{$_}{'hash'} = $head;
2664                }
2665                if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
2666                        for (qw(shortlog log)) {
2667                                $arg{$_}{'hash'} = $head;
2668                        }
2669                }
2670        }
2671        $arg{'tree'}{'hash'} = $treehead if defined $treehead;
2672        $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
2673
2674        print "<div class=\"page_nav\">\n" .
2675                (join " | ",
2676                 map { $_ eq $current ?
2677                       $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
2678                 } @navs);
2679        print "<br/>\n$extra<br/>\n" .
2680              "</div>\n";
2681}
2682
2683sub format_paging_nav {
2684        my ($action, $hash, $head, $page, $nrevs) = @_;
2685        my $paging_nav;
2686
2687
2688        if ($hash ne $head || $page) {
2689                $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
2690        } else {
2691                $paging_nav .= "HEAD";
2692        }
2693
2694        if ($page > 0) {
2695                $paging_nav .= " &sdot; " .
2696                        $cgi->a({-href => href(-replay=>1, page=>$page-1),
2697                                 -accesskey => "p", -title => "Alt-p"}, "prev");
2698        } else {
2699                $paging_nav .= " &sdot; prev";
2700        }
2701
2702        if ($nrevs >= (100 * ($page+1)-1)) {
2703                $paging_nav .= " &sdot; " .
2704                        $cgi->a({-href => href(-replay=>1, page=>$page+1),
2705                                 -accesskey => "n", -title => "Alt-n"}, "next");
2706        } else {
2707                $paging_nav .= " &sdot; next";
2708        }
2709
2710        return $paging_nav;
2711}
2712
2713## ......................................................................
2714## functions printing or outputting HTML: div
2715
2716sub git_print_header_div {
2717        my ($action, $title, $hash, $hash_base) = @_;
2718        my %args = ();
2719
2720        $args{'action'} = $action;
2721        $args{'hash'} = $hash if $hash;
2722        $args{'hash_base'} = $hash_base if $hash_base;
2723
2724        print "<div class=\"header\">\n" .
2725              $cgi->a({-href => href(%args), -class => "title"},
2726              $title ? $title : $action) .
2727              "\n</div>\n";
2728}
2729
2730#sub git_print_authorship (\%) {
2731sub git_print_authorship {
2732        my $co = shift;
2733
2734        my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
2735        print "<div class=\"author_date\">" .
2736              esc_html($co->{'author_name'}) .
2737              " [$ad{'rfc2822'}";
2738        if ($ad{'hour_local'} < 6) {
2739                printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
2740                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2741        } else {
2742                printf(" (%02d:%02d %s)",
2743                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2744        }
2745        print "]</div>\n";
2746}
2747
2748sub git_print_page_path {
2749        my $name = shift;
2750        my $type = shift;
2751        my $hb = shift;
2752
2753
2754        print "<div class=\"page_path\">";
2755        print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
2756                      -title => 'tree root'}, to_utf8("[$project]"));
2757        print " / ";
2758        if (defined $name) {
2759                my @dirname = split '/', $name;
2760                my $basename = pop @dirname;
2761                my $fullname = '';
2762
2763                foreach my $dir (@dirname) {
2764                        $fullname .= ($fullname ? '/' : '') . $dir;
2765                        print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
2766                                                     hash_base=>$hb),
2767                                      -title => $fullname}, esc_path($dir));
2768                        print " / ";
2769                }
2770                if (defined $type && $type eq 'blob') {
2771                        print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
2772                                                     hash_base=>$hb),
2773                                      -title => $name}, esc_path($basename));
2774                } elsif (defined $type && $type eq 'tree') {
2775                        print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
2776                                                     hash_base=>$hb),
2777                                      -title => $name}, esc_path($basename));
2778                        print " / ";
2779                } else {
2780                        print esc_path($basename);
2781                }
2782        }
2783        print "<br/></div>\n";
2784}
2785
2786# sub git_print_log (\@;%) {
2787sub git_print_log ($;%) {
2788        my $log = shift;
2789        my %opts = @_;
2790
2791        if ($opts{'-remove_title'}) {
2792                # remove title, i.e. first line of log
2793                shift @$log;
2794        }
2795        # remove leading empty lines
2796        while (defined $log->[0] && $log->[0] eq "") {
2797                shift @$log;
2798        }
2799
2800        # print log
2801        my $signoff = 0;
2802        my $empty = 0;
2803        foreach my $line (@$log) {
2804                if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2805                        $signoff = 1;
2806                        $empty = 0;
2807                        if (! $opts{'-remove_signoff'}) {
2808                                print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
2809                                next;
2810                        } else {
2811                                # remove signoff lines
2812                                next;
2813                        }
2814                } else {
2815                        $signoff = 0;
2816                }
2817
2818                # print only one empty line
2819                # do not print empty line after signoff
2820                if ($line eq "") {
2821                        next if ($empty || $signoff);
2822                        $empty = 1;
2823                } else {
2824                        $empty = 0;
2825                }
2826
2827                print format_log_line_html($line) . "<br/>\n";
2828        }
2829
2830        if ($opts{'-final_empty_line'}) {
2831                # end with single empty line
2832                print "<br/>\n" unless $empty;
2833        }
2834}
2835
2836# return link target (what link points to)
2837sub git_get_link_target {
2838        my $hash = shift;
2839        my $link_target;
2840
2841        # read link
2842        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2843                or return;
2844        {
2845                local $/;
2846                $link_target = <$fd>;
2847        }
2848        close $fd
2849                or return;
2850
2851        return $link_target;
2852}
2853
2854# given link target, and the directory (basedir) the link is in,
2855# return target of link relative to top directory (top tree);
2856# return undef if it is not possible (including absolute links).
2857sub normalize_link_target {
2858        my ($link_target, $basedir, $hash_base) = @_;
2859
2860        # we can normalize symlink target only if $hash_base is provided
2861        return unless $hash_base;
2862
2863        # absolute symlinks (beginning with '/') cannot be normalized
2864        return if (substr($link_target, 0, 1) eq '/');
2865
2866        # normalize link target to path from top (root) tree (dir)
2867        my $path;
2868        if ($basedir) {
2869                $path = $basedir . '/' . $link_target;
2870        } else {
2871                # we are in top (root) tree (dir)
2872                $path = $link_target;
2873        }
2874
2875        # remove //, /./, and /../
2876        my @path_parts;
2877        foreach my $part (split('/', $path)) {
2878                # discard '.' and ''
2879                next if (!$part || $part eq '.');
2880                # handle '..'
2881                if ($part eq '..') {
2882                        if (@path_parts) {
2883                                pop @path_parts;
2884                        } else {
2885                                # link leads outside repository (outside top dir)
2886                                return;
2887                        }
2888                } else {
2889                        push @path_parts, $part;
2890                }
2891        }
2892        $path = join('/', @path_parts);
2893
2894        return $path;
2895}
2896
2897# print tree entry (row of git_tree), but without encompassing <tr> element
2898sub git_print_tree_entry {
2899        my ($t, $basedir, $hash_base, $have_blame) = @_;
2900
2901        my %base_key = ();
2902        $base_key{'hash_base'} = $hash_base if defined $hash_base;
2903
2904        # The format of a table row is: mode list link.  Where mode is
2905        # the mode of the entry, list is the name of the entry, an href,
2906        # and link is the action links of the entry.
2907
2908        print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
2909        if ($t->{'type'} eq "blob") {
2910                print "<td class=\"list\">" .
2911                        $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2912                                               file_name=>"$basedir$t->{'name'}", %base_key),
2913                                -class => "list"}, esc_path($t->{'name'}));
2914                if (S_ISLNK(oct $t->{'mode'})) {
2915                        my $link_target = git_get_link_target($t->{'hash'});
2916                        if ($link_target) {
2917                                my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
2918                                if (defined $norm_target) {
2919                                        print " -> " .
2920                                              $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
2921                                                                     file_name=>$norm_target),
2922                                                       -title => $norm_target}, esc_path($link_target));
2923                                } else {
2924                                        print " -> " . esc_path($link_target);
2925                                }
2926                        }
2927                }
2928                print "</td>\n";
2929                print "<td class=\"link\">";
2930                print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2931                                             file_name=>"$basedir$t->{'name'}", %base_key)},
2932                              "blob");
2933                if ($have_blame) {
2934                        print " | " .
2935                              $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
2936                                                     file_name=>"$basedir$t->{'name'}", %base_key)},
2937                                      "blame");
2938                }
2939                if (defined $hash_base) {
2940                        print " | " .
2941                              $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2942                                                     hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
2943                                      "history");
2944                }
2945                print " | " .
2946                        $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
2947                                               file_name=>"$basedir$t->{'name'}")},
2948                                "raw");
2949                print "</td>\n";
2950
2951        } elsif ($t->{'type'} eq "tree") {
2952                print "<td class=\"list\">";
2953                print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2954                                             file_name=>"$basedir$t->{'name'}", %base_key)},
2955                              esc_path($t->{'name'}));
2956                print "</td>\n";
2957                print "<td class=\"link\">";
2958                print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2959                                             file_name=>"$basedir$t->{'name'}", %base_key)},
2960                              "tree");
2961                if (defined $hash_base) {
2962                        print " | " .
2963                              $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2964                                                     file_name=>"$basedir$t->{'name'}")},
2965                                      "history");
2966                }
2967                print "</td>\n";
2968        } else {
2969                # unknown object: we can only present history for it
2970                # (this includes 'commit' object, i.e. submodule support)
2971                print "<td class=\"list\">" .
2972                      esc_path($t->{'name'}) .
2973                      "</td>\n";
2974                print "<td class=\"link\">";
2975                if (defined $hash_base) {
2976                        print $cgi->a({-href => href(action=>"history",
2977                                                     hash_base=>$hash_base,
2978                                                     file_name=>"$basedir$t->{'name'}")},
2979                                      "history");
2980                }
2981                print "</td>\n";
2982        }
2983}
2984
2985## ......................................................................
2986## functions printing large fragments of HTML
2987
2988# get pre-image filenames for merge (combined) diff
2989sub fill_from_file_info {
2990        my ($diff, @parents) = @_;
2991
2992        $diff->{'from_file'} = [ ];
2993        $diff->{'from_file'}[$diff->{'nparents'} - 1] = undef;
2994        for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2995                if ($diff->{'status'}[$i] eq 'R' ||
2996                    $diff->{'status'}[$i] eq 'C') {
2997                        $diff->{'from_file'}[$i] =
2998                                git_get_path_by_hash($parents[$i], $diff->{'from_id'}[$i]);
2999                }
3000        }
3001
3002        return $diff;
3003}
3004
3005# is current raw difftree line of file deletion
3006sub is_deleted {
3007        my $diffinfo = shift;
3008
3009        return $diffinfo->{'to_id'} eq ('0' x 40);
3010}
3011
3012# does patch correspond to [previous] difftree raw line
3013# $diffinfo  - hashref of parsed raw diff format
3014# $patchinfo - hashref of parsed patch diff format
3015#              (the same keys as in $diffinfo)
3016sub is_patch_split {
3017        my ($diffinfo, $patchinfo) = @_;
3018
3019        return defined $diffinfo && defined $patchinfo
3020                && $diffinfo->{'to_file'} eq $patchinfo->{'to_file'};
3021}
3022
3023
3024sub git_difftree_body {
3025        my ($difftree, $hash, @parents) = @_;
3026        my ($parent) = $parents[0];
3027        my ($have_blame) = gitweb_check_feature('blame');
3028        print "<div class=\"list_head\">\n";
3029        if ($#{$difftree} > 10) {
3030                print(($#{$difftree} + 1) . " files changed:\n");
3031        }
3032        print "</div>\n";
3033
3034        print "<table class=\"" .
3035              (@parents > 1 ? "combined " : "") .
3036              "diff_tree\">\n";
3037
3038        # header only for combined diff in 'commitdiff' view
3039        my $has_header = @$difftree && @parents > 1 && $action eq 'commitdiff';
3040        if ($has_header) {
3041                # table header
3042                print "<thead><tr>\n" .
3043                       "<th></th><th></th>\n"; # filename, patchN link
3044                for (my $i = 0; $i < @parents; $i++) {
3045                        my $par = $parents[$i];
3046                        print "<th>" .
3047                              $cgi->a({-href => href(action=>"commitdiff",
3048                                                     hash=>$hash, hash_parent=>$par),
3049                                       -title => 'commitdiff to parent number ' .
3050                                                  ($i+1) . ': ' . substr($par,0,7)},
3051                                      $i+1) .
3052                              "&nbsp;</th>\n";
3053                }
3054                print "</tr></thead>\n<tbody>\n";
3055        }
3056
3057        my $alternate = 1;
3058        my $patchno = 0;
3059        foreach my $line (@{$difftree}) {
3060                my $diff = parsed_difftree_line($line);
3061
3062                if ($alternate) {
3063                        print "<tr class=\"dark\">\n";
3064                } else {
3065                        print "<tr class=\"light\">\n";
3066                }
3067                $alternate ^= 1;
3068
3069                if (exists $diff->{'nparents'}) { # combined diff
3070
3071                        fill_from_file_info($diff, @parents)
3072                                unless exists $diff->{'from_file'};
3073
3074                        if (!is_deleted($diff)) {
3075                                # file exists in the result (child) commit
3076                                print "<td>" .
3077                                      $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3078                                                             file_name=>$diff->{'to_file'},
3079                                                             hash_base=>$hash),
3080                                              -class => "list"}, esc_path($diff->{'to_file'})) .
3081                                      "</td>\n";
3082                        } else {
3083                                print "<td>" .
3084                                      esc_path($diff->{'to_file'}) .
3085                                      "</td>\n";
3086                        }
3087
3088                        if ($action eq 'commitdiff') {
3089                                # link to patch
3090                                $patchno++;
3091                                print "<td class=\"link\">" .
3092                                      $cgi->a({-href => "#patch$patchno"}, "patch") .
3093                                      " | " .
3094                                      "</td>\n";
3095                        }
3096
3097                        my $has_history = 0;
3098                        my $not_deleted = 0;
3099                        for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
3100                                my $hash_parent = $parents[$i];
3101                                my $from_hash = $diff->{'from_id'}[$i];
3102                                my $from_path = $diff->{'from_file'}[$i];
3103                                my $status = $diff->{'status'}[$i];
3104
3105                                $has_history ||= ($status ne 'A');
3106                                $not_deleted ||= ($status ne 'D');
3107
3108                                if ($status eq 'A') {
3109                                        print "<td  class=\"link\" align=\"right\"> | </td>\n";
3110                                } elsif ($status eq 'D') {
3111                                        print "<td class=\"link\">" .
3112                                              $cgi->a({-href => href(action=>"blob",
3113                                                                     hash_base=>$hash,
3114                                                                     hash=>$from_hash,
3115                                                                     file_name=>$from_path)},
3116                                                      "blob" . ($i+1)) .
3117                                              " | </td>\n";
3118                                } else {
3119                                        if ($diff->{'to_id'} eq $from_hash) {
3120                                                print "<td class=\"link nochange\">";
3121                                        } else {
3122                                                print "<td class=\"link\">";
3123                                        }
3124                                        print $cgi->a({-href => href(action=>"blobdiff",
3125                                                                     hash=>$diff->{'to_id'},
3126                                                                     hash_parent=>$from_hash,
3127                                                                     hash_base=>$hash,
3128                                                                     hash_parent_base=>$hash_parent,
3129                                                                     file_name=>$diff->{'to_file'},
3130                                                                     file_parent=>$from_path)},
3131                                                      "diff" . ($i+1)) .
3132                                              " | </td>\n";
3133                                }
3134                        }
3135
3136                        print "<td class=\"link\">";
3137                        if ($not_deleted) {
3138                                print $cgi->a({-href => href(action=>"blob",
3139                                                             hash=>$diff->{'to_id'},
3140                                                             file_name=>$diff->{'to_file'},
3141                                                             hash_base=>$hash)},
3142                                              "blob");
3143                                print " | " if ($has_history);
3144                        }
3145                        if ($has_history) {
3146                                print $cgi->a({-href => href(action=>"history",
3147                                                             file_name=>$diff->{'to_file'},
3148                                                             hash_base=>$hash)},
3149                                              "history");
3150                        }
3151                        print "</td>\n";
3152
3153                        print "</tr>\n";
3154                        next; # instead of 'else' clause, to avoid extra indent
3155                }
3156                # else ordinary diff
3157
3158                my ($to_mode_oct, $to_mode_str, $to_file_type);
3159                my ($from_mode_oct, $from_mode_str, $from_file_type);
3160                if ($diff->{'to_mode'} ne ('0' x 6)) {
3161                        $to_mode_oct = oct $diff->{'to_mode'};
3162                        if (S_ISREG($to_mode_oct)) { # only for regular file
3163                                $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
3164                        }
3165                        $to_file_type = file_type($diff->{'to_mode'});
3166                }
3167                if ($diff->{'from_mode'} ne ('0' x 6)) {
3168                        $from_mode_oct = oct $diff->{'from_mode'};
3169                        if (S_ISREG($to_mode_oct)) { # only for regular file
3170                                $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
3171                        }
3172                        $from_file_type = file_type($diff->{'from_mode'});
3173                }
3174
3175                if ($diff->{'status'} eq "A") { # created
3176                        my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
3177                        $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
3178                        $mode_chng   .= "]</span>";
3179                        print "<td>";
3180                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3181                                                     hash_base=>$hash, file_name=>$diff->{'file'}),
3182                                      -class => "list"}, esc_path($diff->{'file'}));
3183                        print "</td>\n";
3184                        print "<td>$mode_chng</td>\n";
3185                        print "<td class=\"link\">";
3186                        if ($action eq 'commitdiff') {
3187                                # link to patch
3188                                $patchno++;
3189                                print $cgi->a({-href => "#patch$patchno"}, "patch");
3190                                print " | ";
3191                        }
3192                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3193                                                     hash_base=>$hash, file_name=>$diff->{'file'})},
3194                                      "blob");
3195                        print "</td>\n";
3196
3197                } elsif ($diff->{'status'} eq "D") { # deleted
3198                        my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
3199                        print "<td>";
3200                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
3201                                                     hash_base=>$parent, file_name=>$diff->{'file'}),
3202                                       -class => "list"}, esc_path($diff->{'file'}));
3203                        print "</td>\n";
3204                        print "<td>$mode_chng</td>\n";
3205                        print "<td class=\"link\">";
3206                        if ($action eq 'commitdiff') {
3207                                # link to patch
3208                                $patchno++;
3209                                print $cgi->a({-href => "#patch$patchno"}, "patch");
3210                                print " | ";
3211                        }
3212                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
3213                                                     hash_base=>$parent, file_name=>$diff->{'file'})},
3214                                      "blob") . " | ";
3215                        if ($have_blame) {
3216                                print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
3217                                                             file_name=>$diff->{'file'})},
3218                                              "blame") . " | ";
3219                        }
3220                        print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
3221                                                     file_name=>$diff->{'file'})},
3222                                      "history");
3223                        print "</td>\n";
3224
3225                } elsif ($diff->{'status'} eq "M" || $diff->{'status'} eq "T") { # modified, or type changed
3226                        my $mode_chnge = "";
3227                        if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
3228                                $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
3229                                if ($from_file_type ne $to_file_type) {
3230                                        $mode_chnge .= " from $from_file_type to $to_file_type";
3231                                }
3232                                if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
3233                                        if ($from_mode_str && $to_mode_str) {
3234                                                $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
3235                                        } elsif ($to_mode_str) {
3236                                                $mode_chnge .= " mode: $to_mode_str";
3237                                        }
3238                                }
3239                                $mode_chnge .= "]</span>\n";
3240                        }
3241                        print "<td>";
3242                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3243                                                     hash_base=>$hash, file_name=>$diff->{'file'}),
3244                                      -class => "list"}, esc_path($diff->{'file'}));
3245                        print "</td>\n";
3246                        print "<td>$mode_chnge</td>\n";
3247                        print "<td class=\"link\">";
3248                        if ($action eq 'commitdiff') {
3249                                # link to patch
3250                                $patchno++;
3251                                print $cgi->a({-href => "#patch$patchno"}, "patch") .
3252                                      " | ";
3253                        } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
3254                                # "commit" view and modified file (not onlu mode changed)
3255                                print $cgi->a({-href => href(action=>"blobdiff",
3256                                                             hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
3257                                                             hash_base=>$hash, hash_parent_base=>$parent,
3258                                                             file_name=>$diff->{'file'})},
3259                                              "diff") .
3260                                      " | ";
3261                        }
3262                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3263                                                     hash_base=>$hash, file_name=>$diff->{'file'})},
3264                                       "blob") . " | ";
3265                        if ($have_blame) {
3266                                print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
3267                                                             file_name=>$diff->{'file'})},
3268                                              "blame") . " | ";
3269                        }
3270                        print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
3271                                                     file_name=>$diff->{'file'})},
3272                                      "history");
3273                        print "</td>\n";
3274
3275                } elsif ($diff->{'status'} eq "R" || $diff->{'status'} eq "C") { # renamed or copied
3276                        my %status_name = ('R' => 'moved', 'C' => 'copied');
3277                        my $nstatus = $status_name{$diff->{'status'}};
3278                        my $mode_chng = "";
3279                        if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
3280                                # mode also for directories, so we cannot use $to_mode_str
3281                                $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
3282                        }
3283                        print "<td>" .
3284                              $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
3285                                                     hash=>$diff->{'to_id'}, file_name=>$diff->{'to_file'}),
3286                                      -class => "list"}, esc_path($diff->{'to_file'})) . "</td>\n" .
3287                              "<td><span class=\"file_status $nstatus\">[$nstatus from " .
3288                              $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
3289                                                     hash=>$diff->{'from_id'}, file_name=>$diff->{'from_file'}),
3290                                      -class => "list"}, esc_path($diff->{'from_file'})) .
3291                              " with " . (int $diff->{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
3292                              "<td class=\"link\">";
3293                        if ($action eq 'commitdiff') {
3294                                # link to patch
3295                                $patchno++;
3296                                print $cgi->a({-href => "#patch$patchno"}, "patch") .
3297                                      " | ";
3298                        } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
3299                                # "commit" view and modified file (not only pure rename or copy)
3300                                print $cgi->a({-href => href(action=>"blobdiff",
3301                                                             hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
3302                                                             hash_base=>$hash, hash_parent_base=>$parent,
3303                                                             file_name=>$diff->{'to_file'}, file_parent=>$diff->{'from_file'})},
3304                                              "diff") .
3305                                      " | ";
3306                        }
3307                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3308                                                     hash_base=>$parent, file_name=>$diff->{'to_file'})},
3309                                      "blob") . " | ";
3310                        if ($have_blame) {
3311                                print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
3312                                                             file_name=>$diff->{'to_file'})},
3313                                              "blame") . " | ";
3314                        }
3315                        print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
3316                                                    file_name=>$diff->{'to_file'})},
3317                                      "history");
3318                        print "</td>\n";
3319
3320                } # we should not encounter Unmerged (U) or Unknown (X) status
3321                print "</tr>\n";
3322        }
3323        print "</tbody>" if $has_header;
3324        print "</table>\n";
3325}
3326
3327sub git_patchset_body {
3328        my ($fd, $difftree, $hash, @hash_parents) = @_;
3329        my ($hash_parent) = $hash_parents[0];
3330
3331        my $is_combined = (@hash_parents > 1);
3332        my $patch_idx = 0;
3333        my $patch_number = 0;
3334        my $patch_line;
3335        my $diffinfo;
3336        my $to_name;
3337        my (%from, %to);
3338
3339        print "<div class=\"patchset\">\n";
3340
3341        # skip to first patch
3342        while ($patch_line = <$fd>) {
3343                chomp $patch_line;
3344
3345                last if ($patch_line =~ m/^diff /);
3346        }
3347
3348 PATCH:
3349        while ($patch_line) {
3350
3351                # parse "git diff" header line
3352                if ($patch_line =~ m/^diff --git (\"(?:[^\\\"]*(?:\\.[^\\\"]*)*)\"|[^ "]*) (.*)$/) {
3353                        # $1 is from_name, which we do not use
3354                        $to_name = unquote($2);
3355                        $to_name =~ s!^b/!!;
3356                } elsif ($patch_line =~ m/^diff --(cc|combined) ("?.*"?)$/) {
3357                        # $1 is 'cc' or 'combined', which we do not use
3358                        $to_name = unquote($2);
3359                } else {
3360                        $to_name = undef;
3361                }
3362
3363                # check if current patch belong to current raw line
3364                # and parse raw git-diff line if needed
3365                if (is_patch_split($diffinfo, { 'to_file' => $to_name })) {
3366                        # this is continuation of a split patch
3367                        print "<div class=\"patch cont\">\n";
3368                } else {
3369                        # advance raw git-diff output if needed
3370                        $patch_idx++ if defined $diffinfo;
3371
3372                        # read and prepare patch information
3373                        $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
3374
3375                        # compact combined diff output can have some patches skipped
3376                        # find which patch (using pathname of result) we are at now;
3377                        if ($is_combined) {
3378                                while ($to_name ne $diffinfo->{'to_file'}) {
3379                                        print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
3380                                              format_diff_cc_simplified($diffinfo, @hash_parents) .
3381                                              "</div>\n";  # class="patch"
3382
3383                                        $patch_idx++;
3384                                        $patch_number++;
3385
3386                                        last if $patch_idx > $#$difftree;
3387                                        $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
3388                                }
3389                        }
3390
3391                        # modifies %from, %to hashes
3392                        parse_from_to_diffinfo($diffinfo, \%from, \%to, @hash_parents);
3393
3394                        # this is first patch for raw difftree line with $patch_idx index
3395                        # we index @$difftree array from 0, but number patches from 1
3396                        print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
3397                }
3398
3399                # git diff header
3400                #assert($patch_line =~ m/^diff /) if DEBUG;
3401                #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
3402                $patch_number++;
3403                # print "git diff" header
3404                print format_git_diff_header_line($patch_line, $diffinfo,
3405                                                  \%from, \%to);
3406
3407                # print extended diff header
3408                print "<div class=\"diff extended_header\">\n";
3409        EXTENDED_HEADER:
3410                while ($patch_line = <$fd>) {
3411                        chomp $patch_line;
3412
3413                        last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
3414
3415                        print format_extended_diff_header_line($patch_line, $diffinfo,
3416                                                               \%from, \%to);
3417                }
3418                print "</div>\n"; # class="diff extended_header"
3419
3420                # from-file/to-file diff header
3421                if (! $patch_line) {
3422                        print "</div>\n"; # class="patch"
3423                        last PATCH;
3424                }
3425                next PATCH if ($patch_line =~ m/^diff /);
3426                #assert($patch_line =~ m/^---/) if DEBUG;
3427
3428                my $last_patch_line = $patch_line;
3429                $patch_line = <$fd>;
3430                chomp $patch_line;
3431                #assert($patch_line =~ m/^\+\+\+/) if DEBUG;
3432
3433                print format_diff_from_to_header($last_patch_line, $patch_line,
3434                                                 $diffinfo, \%from, \%to,
3435                                                 @hash_parents);
3436
3437                # the patch itself
3438        LINE:
3439                while ($patch_line = <$fd>) {
3440                        chomp $patch_line;
3441
3442                        next PATCH if ($patch_line =~ m/^diff /);
3443
3444                        print format_diff_line($patch_line, \%from, \%to);
3445                }
3446
3447        } continue {
3448                print "</div>\n"; # class="patch"
3449        }
3450
3451        # for compact combined (--cc) format, with chunk and patch simpliciaction
3452        # patchset might be empty, but there might be unprocessed raw lines
3453        for (++$patch_idx if $patch_number > 0;
3454             $patch_idx < @$difftree;
3455             ++$patch_idx) {
3456                # read and prepare patch information
3457                $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
3458
3459                # generate anchor for "patch" links in difftree / whatchanged part
3460                print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
3461                      format_diff_cc_simplified($diffinfo, @hash_parents) .
3462                      "</div>\n";  # class="patch"
3463
3464                $patch_number++;
3465        }
3466
3467        if ($patch_number == 0) {
3468                if (@hash_parents > 1) {
3469                        print "<div class=\"diff nodifferences\">Trivial merge</div>\n";
3470                } else {
3471                        print "<div class=\"diff nodifferences\">No differences found</div>\n";
3472                }
3473        }
3474
3475        print "</div>\n"; # class="patchset"
3476}
3477
3478# . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3479
3480sub git_project_list_body {
3481        my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
3482
3483        my ($check_forks) = gitweb_check_feature('forks');
3484
3485        my @projects;
3486        foreach my $pr (@$projlist) {
3487                my (@aa) = git_get_last_activity($pr->{'path'});
3488                unless (@aa) {
3489                        next;
3490                }
3491                ($pr->{'age'}, $pr->{'age_string'}) = @aa;
3492                if (!defined $pr->{'descr'}) {
3493                        my $descr = git_get_project_description($pr->{'path'}) || "";
3494                        $pr->{'descr_long'} = to_utf8($descr);
3495                        $pr->{'descr'} = chop_str($descr, $projects_list_description_width, 5);
3496                }
3497                if (!defined $pr->{'owner'}) {
3498                        $pr->{'owner'} = git_get_project_owner("$pr->{'path'}") || "";
3499                }
3500                if ($check_forks) {
3501                        my $pname = $pr->{'path'};
3502                        if (($pname =~ s/\.git$//) &&
3503                            ($pname !~ /\/$/) &&
3504                            (-d "$projectroot/$pname")) {
3505                                $pr->{'forks'} = "-d $projectroot/$pname";
3506                        }
3507                        else {
3508                                $pr->{'forks'} = 0;
3509                        }
3510                }
3511                push @projects, $pr;
3512        }
3513
3514        $order ||= $default_projects_order;
3515        $from = 0 unless defined $from;
3516        $to = $#projects if (!defined $to || $#projects < $to);
3517
3518        print "<table class=\"project_list\">\n";
3519        unless ($no_header) {
3520                print "<tr>\n";
3521                if ($check_forks) {
3522                        print "<th></th>\n";
3523                }
3524                if ($order eq "project") {
3525                        @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
3526                        print "<th>Project</th>\n";
3527                } else {
3528                        print "<th>" .
3529                              $cgi->a({-href => href(project=>undef, order=>'project'),
3530                                       -class => "header"}, "Project") .
3531                              "</th>\n";
3532                }
3533                if ($order eq "descr") {
3534                        @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
3535                        print "<th>Description</th>\n";
3536                } else {
3537                        print "<th>" .
3538                              $cgi->a({-href => href(project=>undef, order=>'descr'),
3539                                       -class => "header"}, "Description") .
3540                              "</th>\n";
3541                }
3542                if ($order eq "owner") {
3543                        @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
3544                        print "<th>Owner</th>\n";
3545                } else {
3546                        print "<th>" .
3547                              $cgi->a({-href => href(project=>undef, order=>'owner'),
3548                                       -class => "header"}, "Owner") .
3549                              "</th>\n";
3550                }
3551                if ($order eq "age") {
3552                        @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
3553                        print "<th>Last Change</th>\n";
3554                } else {
3555                        print "<th>" .
3556                              $cgi->a({-href => href(project=>undef, order=>'age'),
3557                                       -class => "header"}, "Last Change") .
3558                              "</th>\n";
3559                }
3560                print "<th></th>\n" .
3561                      "</tr>\n";
3562        }
3563        my $alternate = 1;
3564        for (my $i = $from; $i <= $to; $i++) {
3565                my $pr = $projects[$i];
3566                if ($alternate) {
3567                        print "<tr class=\"dark\">\n";
3568                } else {
3569                        print "<tr class=\"light\">\n";
3570                }
3571                $alternate ^= 1;
3572                if ($check_forks) {
3573                        print "<td>";
3574                        if ($pr->{'forks'}) {
3575                                print "<!-- $pr->{'forks'} -->\n";
3576                                print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
3577                        }
3578                        print "</td>\n";
3579                }
3580                print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3581                                        -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
3582                      "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3583                                        -class => "list", -title => $pr->{'descr_long'}},
3584                                        esc_html($pr->{'descr'})) . "</td>\n" .
3585                      "<td><i>" . chop_and_escape_str($pr->{'owner'}, 15) . "</i></td>\n";
3586                print "<td class=\"". age_class($pr->{'age'}) . "\">" .
3587                      (defined $pr->{'age_string'} ? $pr->{'age_string'} : "No commits") . "</td>\n" .
3588                      "<td class=\"link\">" .
3589                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
3590                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
3591                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
3592                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
3593                      ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
3594                      "</td>\n" .
3595                      "</tr>\n";
3596        }
3597        if (defined $extra) {
3598                print "<tr>\n";
3599                if ($check_forks) {
3600                        print "<td></td>\n";
3601                }
3602                print "<td colspan=\"5\">$extra</td>\n" .
3603                      "</tr>\n";
3604        }
3605        print "</table>\n";
3606}
3607
3608sub git_shortlog_body {
3609        # uses global variable $project
3610        my ($commitlist, $from, $to, $refs, $extra) = @_;
3611
3612        $from = 0 unless defined $from;
3613        $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3614
3615        print "<table class=\"shortlog\">\n";
3616        my $alternate = 1;
3617        for (my $i = $from; $i <= $to; $i++) {
3618                my %co = %{$commitlist->[$i]};
3619                my $commit = $co{'id'};
3620                my $ref = format_ref_marker($refs, $commit);
3621                if ($alternate) {
3622                        print "<tr class=\"dark\">\n";
3623                } else {
3624                        print "<tr class=\"light\">\n";
3625                }
3626                $alternate ^= 1;
3627                my $author = chop_and_escape_str($co{'author_name'}, 10);
3628                # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
3629                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3630                      "<td><i>" . $author . "</i></td>\n" .
3631                      "<td>";
3632                print format_subject_html($co{'title'}, $co{'title_short'},
3633                                          href(action=>"commit", hash=>$commit), $ref);
3634                print "</td>\n" .
3635                      "<td class=\"link\">" .
3636                      $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
3637                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
3638                      $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
3639                my $snapshot_links = format_snapshot_links($commit);
3640                if (defined $snapshot_links) {
3641                        print " | " . $snapshot_links;
3642                }
3643                print "</td>\n" .
3644                      "</tr>\n";
3645        }
3646        if (defined $extra) {
3647                print "<tr>\n" .
3648                      "<td colspan=\"4\">$extra</td>\n" .
3649                      "</tr>\n";
3650        }
3651        print "</table>\n";
3652}
3653
3654sub git_history_body {
3655        # Warning: assumes constant type (blob or tree) during history
3656        my ($commitlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
3657
3658        $from = 0 unless defined $from;
3659        $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
3660
3661        print "<table class=\"history\">\n";
3662        my $alternate = 1;
3663        for (my $i = $from; $i <= $to; $i++) {
3664                my %co = %{$commitlist->[$i]};
3665                if (!%co) {
3666                        next;
3667                }
3668                my $commit = $co{'id'};
3669
3670                my $ref = format_ref_marker($refs, $commit);
3671
3672                if ($alternate) {
3673                        print "<tr class=\"dark\">\n";
3674                } else {
3675                        print "<tr class=\"light\">\n";
3676                }
3677                $alternate ^= 1;
3678        # shortlog uses      chop_str($co{'author_name'}, 10)
3679                my $author = chop_and_escape_str($co{'author_name'}, 15, 3);
3680                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3681                      "<td><i>" . $author . "</i></td>\n" .
3682                      "<td>";
3683                # originally git_history used chop_str($co{'title'}, 50)
3684                print format_subject_html($co{'title'}, $co{'title_short'},
3685                                          href(action=>"commit", hash=>$commit), $ref);
3686                print "</td>\n" .
3687                      "<td class=\"link\">" .
3688                      $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
3689                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
3690
3691                if ($ftype eq 'blob') {
3692                        my $blob_current = git_get_hash_by_path($hash_base, $file_name);
3693                        my $blob_parent  = git_get_hash_by_path($commit, $file_name);
3694                        if (defined $blob_current && defined $blob_parent &&
3695                                        $blob_current ne $blob_parent) {
3696                                print " | " .
3697                                        $cgi->a({-href => href(action=>"blobdiff",
3698                                                               hash=>$blob_current, hash_parent=>$blob_parent,
3699                                                               hash_base=>$hash_base, hash_parent_base=>$commit,
3700                                                               file_name=>$file_name)},
3701                                                "diff to current");
3702                        }
3703                }
3704                print "</td>\n" .
3705                      "</tr>\n";
3706        }
3707        if (defined $extra) {
3708                print "<tr>\n" .
3709                      "<td colspan=\"4\">$extra</td>\n" .
3710                      "</tr>\n";
3711        }
3712        print "</table>\n";
3713}
3714
3715sub git_tags_body {
3716        # uses global variable $project
3717        my ($taglist, $from, $to, $extra) = @_;
3718        $from = 0 unless defined $from;
3719        $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
3720
3721        print "<table class=\"tags\">\n";
3722        my $alternate = 1;
3723        for (my $i = $from; $i <= $to; $i++) {
3724                my $entry = $taglist->[$i];
3725                my %tag = %$entry;
3726                my $comment = $tag{'subject'};
3727                my $comment_short;
3728                if (defined $comment) {
3729                        $comment_short = chop_str($comment, 30, 5);
3730                }
3731                if ($alternate) {
3732                        print "<tr class=\"dark\">\n";
3733                } else {
3734                        print "<tr class=\"light\">\n";
3735                }
3736                $alternate ^= 1;
3737                if (defined $tag{'age'}) {
3738                        print "<td><i>$tag{'age'}</i></td>\n";
3739                } else {
3740                        print "<td></td>\n";
3741                }
3742                print "<td>" .
3743                      $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
3744                               -class => "list name"}, esc_html($tag{'name'})) .
3745                      "</td>\n" .
3746                      "<td>";
3747                if (defined $comment) {
3748                        print format_subject_html($comment, $comment_short,
3749                                                  href(action=>"tag", hash=>$tag{'id'}));
3750                }
3751                print "</td>\n" .
3752                      "<td class=\"selflink\">";
3753                if ($tag{'type'} eq "tag") {
3754                        print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
3755                } else {
3756                        print "&nbsp;";
3757                }
3758                print "</td>\n" .
3759                      "<td class=\"link\">" . " | " .
3760                      $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
3761                if ($tag{'reftype'} eq "commit") {
3762                        print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'fullname'})}, "shortlog") .
3763                              " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'fullname'})}, "log");
3764                } elsif ($tag{'reftype'} eq "blob") {
3765                        print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
3766                }
3767                print "</td>\n" .
3768                      "</tr>";
3769        }
3770        if (defined $extra) {
3771                print "<tr>\n" .
3772                      "<td colspan=\"5\">$extra</td>\n" .
3773                      "</tr>\n";
3774        }
3775        print "</table>\n";
3776}
3777
3778sub git_heads_body {
3779        # uses global variable $project
3780        my ($headlist, $head, $from, $to, $extra) = @_;
3781        $from = 0 unless defined $from;
3782        $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
3783
3784        print "<table class=\"heads\">\n";
3785        my $alternate = 1;
3786        for (my $i = $from; $i <= $to; $i++) {
3787                my $entry = $headlist->[$i];
3788                my %ref = %$entry;
3789                my $curr = $ref{'id'} eq $head;
3790                if ($alternate) {
3791                        print "<tr class=\"dark\">\n";
3792                } else {
3793                        print "<tr class=\"light\">\n";
3794                }
3795                $alternate ^= 1;
3796                print "<td><i>$ref{'age'}</i></td>\n" .
3797                      ($curr ? "<td class=\"current_head\">" : "<td>") .
3798                      $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'fullname'}),
3799                               -class => "list name"},esc_html($ref{'name'})) .
3800                      "</td>\n" .
3801                      "<td class=\"link\">" .
3802                      $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'fullname'})}, "shortlog") . " | " .
3803                      $cgi->a({-href => href(action=>"log", hash=>$ref{'fullname'})}, "log") . " | " .
3804                      $cgi->a({-href => href(action=>"tree", hash=>$ref{'fullname'}, hash_base=>$ref{'name'})}, "tree") .
3805                      "</td>\n" .
3806                      "</tr>";
3807        }
3808        if (defined $extra) {
3809                print "<tr>\n" .
3810                      "<td colspan=\"3\">$extra</td>\n" .
3811                      "</tr>\n";
3812        }
3813        print "</table>\n";
3814}
3815
3816sub git_search_grep_body {
3817        my ($commitlist, $from, $to, $extra) = @_;
3818        $from = 0 unless defined $from;
3819        $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3820
3821        print "<table class=\"commit_search\">\n";
3822        my $alternate = 1;
3823        for (my $i = $from; $i <= $to; $i++) {
3824                my %co = %{$commitlist->[$i]};
3825                if (!%co) {
3826                        next;
3827                }
3828                my $commit = $co{'id'};
3829                if ($alternate) {
3830                        print "<tr class=\"dark\">\n";
3831                } else {
3832                        print "<tr class=\"light\">\n";
3833                }
3834                $alternate ^= 1;
3835                my $author = chop_and_escape_str($co{'author_name'}, 15, 5);
3836                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3837                      "<td><i>" . $author . "</i></td>\n" .
3838                      "<td>" .
3839                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
3840                               -class => "list subject"},
3841                              chop_and_escape_str($co{'title'}, 50) . "<br/>");
3842                my $comment = $co{'comment'};
3843                foreach my $line (@$comment) {
3844                        if ($line =~ m/^(.*?)($search_regexp)(.*)$/i) {
3845                                my ($lead, $match, $trail) = ($1, $2, $3);
3846                                $match = chop_str($match, 70, 5, 'center');
3847                                my $contextlen = int((80 - length($match))/2);
3848                                $contextlen = 30 if ($contextlen > 30);
3849                                $lead  = chop_str($lead,  $contextlen, 10, 'left');
3850                                $trail = chop_str($trail, $contextlen, 10, 'right');
3851
3852                                $lead  = esc_html($lead);
3853                                $match = esc_html($match);
3854                                $trail = esc_html($trail);
3855
3856                                print "$lead<span class=\"match\">$match</span>$trail<br />";
3857                        }
3858                }
3859                print "</td>\n" .
3860                      "<td class=\"link\">" .
3861                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3862                      " | " .
3863                      $cgi->a({-href => href(action=>"commitdiff", hash=>$co{'id'})}, "commitdiff") .
3864                      " | " .
3865                      $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3866                print "</td>\n" .
3867                      "</tr>\n";
3868        }
3869        if (defined $extra) {
3870                print "<tr>\n" .
3871                      "<td colspan=\"3\">$extra</td>\n" .
3872                      "</tr>\n";
3873        }
3874        print "</table>\n";
3875}
3876
3877## ======================================================================
3878## ======================================================================
3879## actions
3880
3881sub git_project_list {
3882        my $order = $cgi->param('o');
3883        if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3884                die_error(undef, "Unknown order parameter");
3885        }
3886
3887        my @list = git_get_projects_list();
3888        if (!@list) {
3889                die_error(undef, "No projects found");
3890        }
3891
3892        git_header_html();
3893        if (-f $home_text) {
3894                print "<div class=\"index_include\">\n";
3895                open (my $fd, $home_text);
3896                print <$fd>;
3897                close $fd;
3898                print "</div>\n";
3899        }
3900        git_project_list_body(\@list, $order);
3901        git_footer_html();
3902}
3903
3904sub git_forks {
3905        my $order = $cgi->param('o');
3906        if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3907                die_error(undef, "Unknown order parameter");
3908        }
3909
3910        my @list = git_get_projects_list($project);
3911        if (!@list) {
3912                die_error(undef, "No forks found");
3913        }
3914
3915        git_header_html();
3916        git_print_page_nav('','');
3917        git_print_header_div('summary', "$project forks");
3918        git_project_list_body(\@list, $order);
3919        git_footer_html();
3920}
3921
3922sub git_project_index {
3923        my @projects = git_get_projects_list($project);
3924
3925        print $cgi->header(
3926                -type => 'text/plain',
3927                -charset => 'utf-8',
3928                -content_disposition => 'inline; filename="index.aux"');
3929
3930        foreach my $pr (@projects) {
3931                if (!exists $pr->{'owner'}) {
3932                        $pr->{'owner'} = git_get_project_owner("$pr->{'path'}");
3933                }
3934
3935                my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
3936                # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
3937                $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3938                $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3939                $path  =~ s/ /\+/g;
3940                $owner =~ s/ /\+/g;
3941
3942                print "$path $owner\n";
3943        }
3944}
3945
3946sub git_summary {
3947        my $descr = git_get_project_description($project) || "none";
3948        my %co = parse_commit("HEAD");
3949        my %cd = %co ? parse_date($co{'committer_epoch'}, $co{'committer_tz'}) : ();
3950        my $head = $co{'id'};
3951
3952        my $owner = git_get_project_owner($project);
3953
3954        my $refs = git_get_references();
3955        # These get_*_list functions return one more to allow us to see if
3956        # there are more ...
3957        my @taglist  = git_get_tags_list(16);
3958        my @headlist = git_get_heads_list(16);
3959        my @forklist;
3960        my ($check_forks) = gitweb_check_feature('forks');
3961
3962        if ($check_forks) {
3963                @forklist = git_get_projects_list($project);
3964        }
3965
3966        git_header_html();
3967        git_print_page_nav('summary','', $head);
3968
3969        print "<div class=\"title\">&nbsp;</div>\n";
3970        print "<table class=\"projects_list\">\n" .
3971              "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
3972              "<tr><td>owner</td><td>" . esc_html($owner) . "</td></tr>\n";
3973        if (defined $cd{'rfc2822'}) {
3974                print "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
3975        }
3976
3977        # use per project git URL list in $projectroot/$project/cloneurl
3978        # or make project git URL from git base URL and project name
3979        my $url_tag = "URL";
3980        my @url_list = git_get_project_url_list($project);
3981        @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
3982        foreach my $git_url (@url_list) {
3983                next unless $git_url;
3984                print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
3985                $url_tag = "";
3986        }
3987        print "</table>\n";
3988
3989        if (-s "$projectroot/$project/README.html") {
3990                if (open my $fd, "$projectroot/$project/README.html") {
3991                        print "<div class=\"title\">readme</div>\n" .
3992                              "<div class=\"readme\">\n";
3993                        print $_ while (<$fd>);
3994                        print "\n</div>\n"; # class="readme"
3995                        close $fd;
3996                }
3997        }
3998
3999        # we need to request one more than 16 (0..15) to check if
4000        # those 16 are all
4001        my @commitlist = $head ? parse_commits($head, 17) : ();
4002        if (@commitlist) {
4003                git_print_header_div('shortlog');
4004                git_shortlog_body(\@commitlist, 0, 15, $refs,
4005                                  $#commitlist <=  15 ? undef :
4006                                  $cgi->a({-href => href(action=>"shortlog")}, "..."));
4007        }
4008
4009        if (@taglist) {
4010                git_print_header_div('tags');
4011                git_tags_body(\@taglist, 0, 15,
4012                              $#taglist <=  15 ? undef :
4013                              $cgi->a({-href => href(action=>"tags")}, "..."));
4014        }
4015
4016        if (@headlist) {
4017                git_print_header_div('heads');
4018                git_heads_body(\@headlist, $head, 0, 15,
4019                               $#headlist <= 15 ? undef :
4020                               $cgi->a({-href => href(action=>"heads")}, "..."));
4021        }
4022
4023        if (@forklist) {
4024                git_print_header_div('forks');
4025                git_project_list_body(\@forklist, undef, 0, 15,
4026                                      $#forklist <= 15 ? undef :
4027                                      $cgi->a({-href => href(action=>"forks")}, "..."),
4028                                      'noheader');
4029        }
4030
4031        git_footer_html();
4032}
4033
4034sub git_tag {
4035        my $head = git_get_head_hash($project);
4036        git_header_html();
4037        git_print_page_nav('','', $head,undef,$head);
4038        my %tag = parse_tag($hash);
4039
4040        if (! %tag) {
4041                die_error(undef, "Unknown tag object");
4042        }
4043
4044        git_print_header_div('commit', esc_html($tag{'name'}), $hash);
4045        print "<div class=\"title_text\">\n" .
4046              "<table class=\"object_header\">\n" .
4047              "<tr>\n" .
4048              "<td>object</td>\n" .
4049              "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
4050                               $tag{'object'}) . "</td>\n" .
4051              "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
4052                                              $tag{'type'}) . "</td>\n" .
4053              "</tr>\n";
4054        if (defined($tag{'author'})) {
4055                my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
4056                print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
4057                print "<tr><td></td><td>" . $ad{'rfc2822'} .
4058                        sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
4059                        "</td></tr>\n";
4060        }
4061        print "</table>\n\n" .
4062              "</div>\n";
4063        print "<div class=\"page_body\">";
4064        my $comment = $tag{'comment'};
4065        foreach my $line (@$comment) {
4066                chomp $line;
4067                print esc_html($line, -nbsp=>1) . "<br/>\n";
4068        }
4069        print "</div>\n";
4070        git_footer_html();
4071}
4072
4073sub git_blame2 {
4074        my $fd;
4075        my $ftype;
4076
4077        my ($have_blame) = gitweb_check_feature('blame');
4078        if (!$have_blame) {
4079                die_error('403 Permission denied', "Permission denied");
4080        }
4081        die_error('404 Not Found', "File name not defined") if (!$file_name);
4082        $hash_base ||= git_get_head_hash($project);
4083        die_error(undef, "Couldn't find base commit") unless ($hash_base);
4084        my %co = parse_commit($hash_base)
4085                or die_error(undef, "Reading commit failed");
4086        if (!defined $hash) {
4087                $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
4088                        or die_error(undef, "Error looking up file");
4089        }
4090        $ftype = git_get_type($hash);
4091        if ($ftype !~ "blob") {
4092                die_error('400 Bad Request', "Object is not a blob");
4093        }
4094        open ($fd, "-|", git_cmd(), "blame", '-p', '--',
4095              $file_name, $hash_base)
4096                or die_error(undef, "Open git-blame failed");
4097        git_header_html();
4098        my $formats_nav =
4099                $cgi->a({-href => href(action=>"blob", -replay=>1)},
4100                        "blob") .
4101                " | " .
4102                $cgi->a({-href => href(action=>"history", -replay=>1)},
4103                        "history") .
4104                " | " .
4105                $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
4106                        "HEAD");
4107        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4108        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4109        git_print_page_path($file_name, $ftype, $hash_base);
4110        my @rev_color = (qw(light2 dark2));
4111        my $num_colors = scalar(@rev_color);
4112        my $current_color = 0;
4113        my $last_rev;
4114        print <<HTML;
4115<div class="page_body">
4116<table class="blame">
4117<tr><th>Commit</th><th>Line</th><th>Data</th></tr>
4118HTML
4119        my %metainfo = ();
4120        while (1) {
4121                $_ = <$fd>;
4122                last unless defined $_;
4123                my ($full_rev, $orig_lineno, $lineno, $group_size) =
4124                    /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
4125                if (!exists $metainfo{$full_rev}) {
4126                        $metainfo{$full_rev} = {};
4127                }
4128                my $meta = $metainfo{$full_rev};
4129                while (<$fd>) {
4130                        last if (s/^\t//);
4131                        if (/^(\S+) (.*)$/) {
4132                                $meta->{$1} = $2;
4133                        }
4134                }
4135                my $data = $_;
4136                chomp $data;
4137                my $rev = substr($full_rev, 0, 8);
4138                my $author = $meta->{'author'};
4139                my %date = parse_date($meta->{'author-time'},
4140                                      $meta->{'author-tz'});
4141                my $date = $date{'iso-tz'};
4142                if ($group_size) {
4143                        $current_color = ++$current_color % $num_colors;
4144                }
4145                print "<tr class=\"$rev_color[$current_color]\">\n";
4146                if ($group_size) {
4147                        print "<td class=\"sha1\"";
4148                        print " title=\"". esc_html($author) . ", $date\"";
4149                        print " rowspan=\"$group_size\"" if ($group_size > 1);
4150                        print ">";
4151                        print $cgi->a({-href => href(action=>"commit",
4152                                                     hash=>$full_rev,
4153                                                     file_name=>$file_name)},
4154                                      esc_html($rev));
4155                        print "</td>\n";
4156                }
4157                open (my $dd, "-|", git_cmd(), "rev-parse", "$full_rev^")
4158                        or die_error(undef, "Open git-rev-parse failed");
4159                my $parent_commit = <$dd>;
4160                close $dd;
4161                chomp($parent_commit);
4162                my $blamed = href(action => 'blame',
4163                                  file_name => $meta->{'filename'},
4164                                  hash_base => $parent_commit);
4165                print "<td class=\"linenr\">";
4166                print $cgi->a({ -href => "$blamed#l$orig_lineno",
4167                                -id => "l$lineno",
4168                                -class => "linenr" },
4169                              esc_html($lineno));
4170                print "</td>";
4171                print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
4172                print "</tr>\n";
4173        }
4174        print "</table>\n";
4175        print "</div>";
4176        close $fd
4177                or print "Reading blob failed\n";
4178        git_footer_html();
4179}
4180
4181sub git_blame {
4182        my $fd;
4183
4184        my ($have_blame) = gitweb_check_feature('blame');
4185        if (!$have_blame) {
4186                die_error('403 Permission denied', "Permission denied");
4187        }
4188        die_error('404 Not Found', "File name not defined") if (!$file_name);
4189        $hash_base ||= git_get_head_hash($project);
4190        die_error(undef, "Couldn't find base commit") unless ($hash_base);
4191        my %co = parse_commit($hash_base)
4192                or die_error(undef, "Reading commit failed");
4193        if (!defined $hash) {
4194                $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
4195                        or die_error(undef, "Error lookup file");
4196        }
4197        open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
4198                or die_error(undef, "Open git-annotate failed");
4199        git_header_html();
4200        my $formats_nav =
4201                $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
4202                        "blob") .
4203                " | " .
4204                $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
4205                        "history") .
4206                " | " .
4207                $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
4208                        "HEAD");
4209        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4210        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4211        git_print_page_path($file_name, 'blob', $hash_base);
4212        print "<div class=\"page_body\">\n";
4213        print <<HTML;
4214<table class="blame">
4215  <tr>
4216    <th>Commit</th>
4217    <th>Age</th>
4218    <th>Author</th>
4219    <th>Line</th>
4220    <th>Data</th>
4221  </tr>
4222HTML
4223        my @line_class = (qw(light dark));
4224        my $line_class_len = scalar (@line_class);
4225        my $line_class_num = $#line_class;
4226        while (my $line = <$fd>) {
4227                my $long_rev;
4228                my $short_rev;
4229                my $author;
4230                my $time;
4231                my $lineno;
4232                my $data;
4233                my $age;
4234                my $age_str;
4235                my $age_class;
4236
4237                chomp $line;
4238                $line_class_num = ($line_class_num + 1) % $line_class_len;
4239
4240                if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
4241                        $long_rev = $1;
4242                        $author   = $2;
4243                        $time     = $3;
4244                        $lineno   = $4;
4245                        $data     = $5;
4246                } else {
4247                        print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
4248                        next;
4249                }
4250                $short_rev  = substr ($long_rev, 0, 8);
4251                $age        = time () - $time;
4252                $age_str    = age_string ($age);
4253                $age_str    =~ s/ /&nbsp;/g;
4254                $age_class  = age_class($age);
4255                $author     = esc_html ($author);
4256                $author     =~ s/ /&nbsp;/g;
4257
4258                $data = untabify($data);
4259                $data = esc_html ($data);
4260
4261                print <<HTML;
4262  <tr class="$line_class[$line_class_num]">
4263    <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
4264    <td class="$age_class">$age_str</td>
4265    <td>$author</td>
4266    <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
4267    <td class="pre">$data</td>
4268  </tr>
4269HTML
4270        } # while (my $line = <$fd>)
4271        print "</table>\n\n";
4272        close $fd
4273                or print "Reading blob failed.\n";
4274        print "</div>";
4275        git_footer_html();
4276}
4277
4278sub git_tags {
4279        my $head = git_get_head_hash($project);
4280        git_header_html();
4281        git_print_page_nav('','', $head,undef,$head);
4282        git_print_header_div('summary', $project);
4283
4284        my @tagslist = git_get_tags_list();
4285        if (@tagslist) {
4286                git_tags_body(\@tagslist);
4287        }
4288        git_footer_html();
4289}
4290
4291sub git_heads {
4292        my $head = git_get_head_hash($project);
4293        git_header_html();
4294        git_print_page_nav('','', $head,undef,$head);
4295        git_print_header_div('summary', $project);
4296
4297        my @headslist = git_get_heads_list();
4298        if (@headslist) {
4299                git_heads_body(\@headslist, $head);
4300        }
4301        git_footer_html();
4302}
4303
4304sub git_blob_plain {
4305        my $expires;
4306
4307        if (!defined $hash) {
4308                if (defined $file_name) {
4309                        my $base = $hash_base || git_get_head_hash($project);
4310                        $hash = git_get_hash_by_path($base, $file_name, "blob")
4311                                or die_error(undef, "Error lookup file");
4312                } else {
4313                        die_error(undef, "No file name defined");
4314                }
4315        } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4316                # blobs defined by non-textual hash id's can be cached
4317                $expires = "+1d";
4318        }
4319
4320        my $type = shift;
4321        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
4322                or die_error(undef, "Couldn't cat $file_name, $hash");
4323
4324        $type ||= blob_mimetype($fd, $file_name);
4325
4326        # save as filename, even when no $file_name is given
4327        my $save_as = "$hash";
4328        if (defined $file_name) {
4329                $save_as = $file_name;
4330        } elsif ($type =~ m/^text\//) {
4331                $save_as .= '.txt';
4332        }
4333
4334        print $cgi->header(
4335                -type => "$type",
4336                -expires=>$expires,
4337                -content_disposition => 'inline; filename="' . "$save_as" . '"');
4338        undef $/;
4339        binmode STDOUT, ':raw';
4340        print <$fd>;
4341        binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
4342        $/ = "\n";
4343        close $fd;
4344}
4345
4346sub git_blob {
4347        my $expires;
4348
4349        if (!defined $hash) {
4350                if (defined $file_name) {
4351                        my $base = $hash_base || git_get_head_hash($project);
4352                        $hash = git_get_hash_by_path($base, $file_name, "blob")
4353                                or die_error(undef, "Error lookup file");
4354                } else {
4355                        die_error(undef, "No file name defined");
4356                }
4357        } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4358                # blobs defined by non-textual hash id's can be cached
4359                $expires = "+1d";
4360        }
4361
4362        my ($have_blame) = gitweb_check_feature('blame');
4363        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
4364                or die_error(undef, "Couldn't cat $file_name, $hash");
4365        my $mimetype = blob_mimetype($fd, $file_name);
4366        if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)! && -B $fd) {
4367                close $fd;
4368                return git_blob_plain($mimetype);
4369        }
4370        # we can have blame only for text/* mimetype
4371        $have_blame &&= ($mimetype =~ m!^text/!);
4372
4373        git_header_html(undef, $expires);
4374        my $formats_nav = '';
4375        if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4376                if (defined $file_name) {
4377                        if ($have_blame) {
4378                                $formats_nav .=
4379                                        $cgi->a({-href => href(action=>"blame", -replay=>1)},
4380                                                "blame") .
4381                                        " | ";
4382                        }
4383                        $formats_nav .=
4384                                $cgi->a({-href => href(action=>"history", -replay=>1)},
4385                                        "history") .
4386                                " | " .
4387                                $cgi->a({-href => href(action=>"blob_plain", -replay=>1)},
4388                                        "raw") .
4389                                " | " .
4390                                $cgi->a({-href => href(action=>"blob",
4391                                                       hash_base=>"HEAD", file_name=>$file_name)},
4392                                        "HEAD");
4393                } else {
4394                        $formats_nav .=
4395                                $cgi->a({-href => href(action=>"blob_plain", -replay=>1)},
4396                                        "raw");
4397                }
4398                git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4399                git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4400        } else {
4401                print "<div class=\"page_nav\">\n" .
4402                      "<br/><br/></div>\n" .
4403                      "<div class=\"title\">$hash</div>\n";
4404        }
4405        git_print_page_path($file_name, "blob", $hash_base);
4406        print "<div class=\"page_body\">\n";
4407        if ($mimetype =~ m!^image/!) {
4408                print qq!<img type="$mimetype"!;
4409                if ($file_name) {
4410                        print qq! alt="$file_name" title="$file_name"!;
4411                }
4412                print qq! src="! .
4413                      href(action=>"blob_plain", hash=>$hash,
4414                           hash_base=>$hash_base, file_name=>$file_name) .
4415                      qq!" />\n!;
4416        } else {
4417                my $nr;
4418                while (my $line = <$fd>) {
4419                        chomp $line;
4420                        $nr++;
4421                        $line = untabify($line);
4422                        printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
4423                               $nr, $nr, $nr, esc_html($line, -nbsp=>1);
4424                }
4425        }
4426        close $fd
4427                or print "Reading blob failed.\n";
4428        print "</div>";
4429        git_footer_html();
4430}
4431
4432sub git_tree {
4433        if (!defined $hash_base) {
4434                $hash_base = "HEAD";
4435        }
4436        if (!defined $hash) {
4437                if (defined $file_name) {
4438                        $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
4439                } else {
4440                        $hash = $hash_base;
4441                }
4442        }
4443        $/ = "\0";
4444        open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
4445                or die_error(undef, "Open git-ls-tree failed");
4446        my @entries = map { chomp; $_ } <$fd>;
4447        close $fd or die_error(undef, "Reading tree failed");
4448        $/ = "\n";
4449
4450        my $refs = git_get_references();
4451        my $ref = format_ref_marker($refs, $hash_base);
4452        git_header_html();
4453        my $basedir = '';
4454        my ($have_blame) = gitweb_check_feature('blame');
4455        if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4456                my @views_nav = ();
4457                if (defined $file_name) {
4458                        push @views_nav,
4459                                $cgi->a({-href => href(action=>"history", -replay=>1)},
4460                                        "history"),
4461                                $cgi->a({-href => href(action=>"tree",
4462                                                       hash_base=>"HEAD", file_name=>$file_name)},
4463                                        "HEAD"),
4464                }
4465                my $snapshot_links = format_snapshot_links($hash);
4466                if (defined $snapshot_links) {
4467                        # FIXME: Should be available when we have no hash base as well.
4468                        push @views_nav, $snapshot_links;
4469                }
4470                git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
4471                git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
4472        } else {
4473                undef $hash_base;
4474                print "<div class=\"page_nav\">\n";
4475                print "<br/><br/></div>\n";
4476                print "<div class=\"title\">$hash</div>\n";
4477        }
4478        if (defined $file_name) {
4479                $basedir = $file_name;
4480                if ($basedir ne '' && substr($basedir, -1) ne '/') {
4481                        $basedir .= '/';
4482                }
4483        }
4484        git_print_page_path($file_name, 'tree', $hash_base);
4485        print "<div class=\"page_body\">\n";
4486        print "<table class=\"tree\">\n";
4487        my $alternate = 1;
4488        # '..' (top directory) link if possible
4489        if (defined $hash_base &&
4490            defined $file_name && $file_name =~ m![^/]+$!) {
4491                if ($alternate) {
4492                        print "<tr class=\"dark\">\n";
4493                } else {
4494                        print "<tr class=\"light\">\n";
4495                }
4496                $alternate ^= 1;
4497
4498                my $up = $file_name;
4499                $up =~ s!/?[^/]+$!!;
4500                undef $up unless $up;
4501                # based on git_print_tree_entry
4502                print '<td class="mode">' . mode_str('040000') . "</td>\n";
4503                print '<td class="list">';
4504                print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
4505                                             file_name=>$up)},
4506                              "..");
4507                print "</td>\n";
4508                print "<td class=\"link\"></td>\n";
4509
4510                print "</tr>\n";
4511        }
4512        foreach my $line (@entries) {
4513                my %t = parse_ls_tree_line($line, -z => 1);
4514
4515                if ($alternate) {
4516                        print "<tr class=\"dark\">\n";
4517                } else {
4518                        print "<tr class=\"light\">\n";
4519                }
4520                $alternate ^= 1;
4521
4522                git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
4523
4524                print "</tr>\n";
4525        }
4526        print "</table>\n" .
4527              "</div>";
4528        git_footer_html();
4529}
4530
4531sub git_snapshot {
4532        my @supported_fmts = gitweb_check_feature('snapshot');
4533        @supported_fmts = filter_snapshot_fmts(@supported_fmts);
4534
4535        my $format = $cgi->param('sf');
4536        if (!@supported_fmts) {
4537                die_error('403 Permission denied', "Permission denied");
4538        }
4539        # default to first supported snapshot format
4540        $format ||= $supported_fmts[0];
4541        if ($format !~ m/^[a-z0-9]+$/) {
4542                die_error(undef, "Invalid snapshot format parameter");
4543        } elsif (!exists($known_snapshot_formats{$format})) {
4544                die_error(undef, "Unknown snapshot format");
4545        } elsif (!grep($_ eq $format, @supported_fmts)) {
4546                die_error(undef, "Unsupported snapshot format");
4547        }
4548
4549        if (!defined $hash) {
4550                $hash = git_get_head_hash($project);
4551        }
4552
4553        my $git_command = git_cmd_str();
4554        my $name = $project;
4555        $name =~ s,([^/])/*\.git$,$1,;
4556        $name = basename($name);
4557        my $filename = to_utf8($name);
4558        $name =~ s/\047/\047\\\047\047/g;
4559        my $cmd;
4560        $filename .= "-$hash$known_snapshot_formats{$format}{'suffix'}";
4561        $cmd = "$git_command archive " .
4562                "--format=$known_snapshot_formats{$format}{'format'} " .
4563                "--prefix=\'$name\'/ $hash";
4564        if (exists $known_snapshot_formats{$format}{'compressor'}) {
4565                $cmd .= ' | ' . join ' ', @{$known_snapshot_formats{$format}{'compressor'}};
4566        }
4567
4568        print $cgi->header(
4569                -type => $known_snapshot_formats{$format}{'type'},
4570                -content_disposition => 'inline; filename="' . "$filename" . '"',
4571                -status => '200 OK');
4572
4573        open my $fd, "-|", $cmd
4574                or die_error(undef, "Execute git-archive failed");
4575        binmode STDOUT, ':raw';
4576        print <$fd>;
4577        binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
4578        close $fd;
4579}
4580
4581sub git_log {
4582        my $head = git_get_head_hash($project);
4583        if (!defined $hash) {
4584                $hash = $head;
4585        }
4586        if (!defined $page) {
4587                $page = 0;
4588        }
4589        my $refs = git_get_references();
4590
4591        my @commitlist = parse_commits($hash, 101, (100 * $page));
4592
4593        my $paging_nav = format_paging_nav('log', $hash, $head, $page, (100 * ($page+1)));
4594
4595        git_header_html();
4596        git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
4597
4598        if (!@commitlist) {
4599                my %co = parse_commit($hash);
4600
4601                git_print_header_div('summary', $project);
4602                print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
4603        }
4604        my $to = ($#commitlist >= 99) ? (99) : ($#commitlist);
4605        for (my $i = 0; $i <= $to; $i++) {
4606                my %co = %{$commitlist[$i]};
4607                next if !%co;
4608                my $commit = $co{'id'};
4609                my $ref = format_ref_marker($refs, $commit);
4610                my %ad = parse_date($co{'author_epoch'});
4611                git_print_header_div('commit',
4612                               "<span class=\"age\">$co{'age_string'}</span>" .
4613                               esc_html($co{'title'}) . $ref,
4614                               $commit);
4615                print "<div class=\"title_text\">\n" .
4616                      "<div class=\"log_link\">\n" .
4617                      $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
4618                      " | " .
4619                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
4620                      " | " .
4621                      $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
4622                      "<br/>\n" .
4623                      "</div>\n" .
4624                      "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
4625                      "</div>\n";
4626
4627                print "<div class=\"log_body\">\n";
4628                git_print_log($co{'comment'}, -final_empty_line=> 1);
4629                print "</div>\n";
4630        }
4631        if ($#commitlist >= 100) {
4632                print "<div class=\"page_nav\">\n";
4633                print $cgi->a({-href => href(-replay=>1, page=>$page+1),
4634                               -accesskey => "n", -title => "Alt-n"}, "next");
4635                print "</div>\n";
4636        }
4637        git_footer_html();
4638}
4639
4640sub git_commit {
4641        $hash ||= $hash_base || "HEAD";
4642        my %co = parse_commit($hash);
4643        if (!%co) {
4644                die_error(undef, "Unknown commit object");
4645        }
4646        my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4647        my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
4648
4649        my $parent  = $co{'parent'};
4650        my $parents = $co{'parents'}; # listref
4651
4652        # we need to prepare $formats_nav before any parameter munging
4653        my $formats_nav;
4654        if (!defined $parent) {
4655                # --root commitdiff
4656                $formats_nav .= '(initial)';
4657        } elsif (@$parents == 1) {
4658                # single parent commit
4659                $formats_nav .=
4660                        '(parent: ' .
4661                        $cgi->a({-href => href(action=>"commit",
4662                                               hash=>$parent)},
4663                                esc_html(substr($parent, 0, 7))) .
4664                        ')';
4665        } else {
4666                # merge commit
4667                $formats_nav .=
4668                        '(merge: ' .
4669                        join(' ', map {
4670                                $cgi->a({-href => href(action=>"commit",
4671                                                       hash=>$_)},
4672                                        esc_html(substr($_, 0, 7)));
4673                        } @$parents ) .
4674                        ')';
4675        }
4676
4677        if (!defined $parent) {
4678                $parent = "--root";
4679        }
4680        my @difftree;
4681        open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
4682                @diff_opts,
4683                (@$parents <= 1 ? $parent : '-c'),
4684                $hash, "--"
4685                or die_error(undef, "Open git-diff-tree failed");
4686        @difftree = map { chomp; $_ } <$fd>;
4687        close $fd or die_error(undef, "Reading git-diff-tree failed");
4688
4689        # non-textual hash id's can be cached
4690        my $expires;
4691        if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4692                $expires = "+1d";
4693        }
4694        my $refs = git_get_references();
4695        my $ref = format_ref_marker($refs, $co{'id'});
4696
4697        git_header_html(undef, $expires);
4698        git_print_page_nav('commit', '',
4699                           $hash, $co{'tree'}, $hash,
4700                           $formats_nav);
4701
4702        if (defined $co{'parent'}) {
4703                git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
4704        } else {
4705                git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
4706        }
4707        print "<div class=\"title_text\">\n" .
4708              "<table class=\"object_header\">\n";
4709        print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
4710              "<tr>" .
4711              "<td></td><td> $ad{'rfc2822'}";
4712        if ($ad{'hour_local'} < 6) {
4713                printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
4714                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4715        } else {
4716                printf(" (%02d:%02d %s)",
4717                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4718        }
4719        print "</td>" .
4720              "</tr>\n";
4721        print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
4722        print "<tr><td></td><td> $cd{'rfc2822'}" .
4723              sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
4724              "</td></tr>\n";
4725        print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
4726        print "<tr>" .
4727              "<td>tree</td>" .
4728              "<td class=\"sha1\">" .
4729              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
4730                       class => "list"}, $co{'tree'}) .
4731              "</td>" .
4732              "<td class=\"link\">" .
4733              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
4734                      "tree");
4735        my $snapshot_links = format_snapshot_links($hash);
4736        if (defined $snapshot_links) {
4737                print " | " . $snapshot_links;
4738        }
4739        print "</td>" .
4740              "</tr>\n";
4741
4742        foreach my $par (@$parents) {
4743                print "<tr>" .
4744                      "<td>parent</td>" .
4745                      "<td class=\"sha1\">" .
4746                      $cgi->a({-href => href(action=>"commit", hash=>$par),
4747                               class => "list"}, $par) .
4748                      "</td>" .
4749                      "<td class=\"link\">" .
4750                      $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
4751                      " | " .
4752                      $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
4753                      "</td>" .
4754                      "</tr>\n";
4755        }
4756        print "</table>".
4757              "</div>\n";
4758
4759        print "<div class=\"page_body\">\n";
4760        git_print_log($co{'comment'});
4761        print "</div>\n";
4762
4763        git_difftree_body(\@difftree, $hash, @$parents);
4764
4765        git_footer_html();
4766}
4767
4768sub git_object {
4769        # object is defined by:
4770        # - hash or hash_base alone
4771        # - hash_base and file_name
4772        my $type;
4773
4774        # - hash or hash_base alone
4775        if ($hash || ($hash_base && !defined $file_name)) {
4776                my $object_id = $hash || $hash_base;
4777
4778                my $git_command = git_cmd_str();
4779                open my $fd, "-|", "$git_command cat-file -t $object_id 2>/dev/null"
4780                        or die_error('404 Not Found', "Object does not exist");
4781                $type = <$fd>;
4782                chomp $type;
4783                close $fd
4784                        or die_error('404 Not Found', "Object does not exist");
4785
4786        # - hash_base and file_name
4787        } elsif ($hash_base && defined $file_name) {
4788                $file_name =~ s,/+$,,;
4789
4790                system(git_cmd(), "cat-file", '-e', $hash_base) == 0
4791                        or die_error('404 Not Found', "Base object does not exist");
4792
4793                # here errors should not hapen
4794                open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
4795                        or die_error(undef, "Open git-ls-tree failed");
4796                my $line = <$fd>;
4797                close $fd;
4798
4799                #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
4800                unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
4801                        die_error('404 Not Found', "File or directory for given base does not exist");
4802                }
4803                $type = $2;
4804                $hash = $3;
4805        } else {
4806                die_error('404 Not Found', "Not enough information to find object");
4807        }
4808
4809        print $cgi->redirect(-uri => href(action=>$type, -full=>1,
4810                                          hash=>$hash, hash_base=>$hash_base,
4811                                          file_name=>$file_name),
4812                             -status => '302 Found');
4813}
4814
4815sub git_blobdiff {
4816        my $format = shift || 'html';
4817
4818        my $fd;
4819        my @difftree;
4820        my %diffinfo;
4821        my $expires;
4822
4823        # preparing $fd and %diffinfo for git_patchset_body
4824        # new style URI
4825        if (defined $hash_base && defined $hash_parent_base) {
4826                if (defined $file_name) {
4827                        # read raw output
4828                        open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4829                                $hash_parent_base, $hash_base,
4830                                "--", (defined $file_parent ? $file_parent : ()), $file_name
4831                                or die_error(undef, "Open git-diff-tree failed");
4832                        @difftree = map { chomp; $_ } <$fd>;
4833                        close $fd
4834                                or die_error(undef, "Reading git-diff-tree failed");
4835                        @difftree
4836                                or die_error('404 Not Found', "Blob diff not found");
4837
4838                } elsif (defined $hash &&
4839                         $hash =~ /[0-9a-fA-F]{40}/) {
4840                        # try to find filename from $hash
4841
4842                        # read filtered raw output
4843                        open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4844                                $hash_parent_base, $hash_base, "--"
4845                                or die_error(undef, "Open git-diff-tree failed");
4846                        @difftree =
4847                                # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
4848                                # $hash == to_id
4849                                grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
4850                                map { chomp; $_ } <$fd>;
4851                        close $fd
4852                                or die_error(undef, "Reading git-diff-tree failed");
4853                        @difftree
4854                                or die_error('404 Not Found', "Blob diff not found");
4855
4856                } else {
4857                        die_error('404 Not Found', "Missing one of the blob diff parameters");
4858                }
4859
4860                if (@difftree > 1) {
4861                        die_error('404 Not Found', "Ambiguous blob diff specification");
4862                }
4863
4864                %diffinfo = parse_difftree_raw_line($difftree[0]);
4865                $file_parent ||= $diffinfo{'from_file'} || $file_name;
4866                $file_name   ||= $diffinfo{'to_file'};
4867
4868                $hash_parent ||= $diffinfo{'from_id'};
4869                $hash        ||= $diffinfo{'to_id'};
4870
4871                # non-textual hash id's can be cached
4872                if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
4873                    $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
4874                        $expires = '+1d';
4875                }
4876
4877                # open patch output
4878                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4879                        '-p', ($format eq 'html' ? "--full-index" : ()),
4880                        $hash_parent_base, $hash_base,
4881                        "--", (defined $file_parent ? $file_parent : ()), $file_name
4882                        or die_error(undef, "Open git-diff-tree failed");
4883        }
4884
4885        # old/legacy style URI
4886        if (!%diffinfo && # if new style URI failed
4887            defined $hash && defined $hash_parent) {
4888                # fake git-diff-tree raw output
4889                $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
4890                $diffinfo{'from_id'} = $hash_parent;
4891                $diffinfo{'to_id'}   = $hash;
4892                if (defined $file_name) {
4893                        if (defined $file_parent) {
4894                                $diffinfo{'status'} = '2';
4895                                $diffinfo{'from_file'} = $file_parent;
4896                                $diffinfo{'to_file'}   = $file_name;
4897                        } else { # assume not renamed
4898                                $diffinfo{'status'} = '1';
4899                                $diffinfo{'from_file'} = $file_name;
4900                                $diffinfo{'to_file'}   = $file_name;
4901                        }
4902                } else { # no filename given
4903                        $diffinfo{'status'} = '2';
4904                        $diffinfo{'from_file'} = $hash_parent;
4905                        $diffinfo{'to_file'}   = $hash;
4906                }
4907
4908                # non-textual hash id's can be cached
4909                if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
4910                    $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4911                        $expires = '+1d';
4912                }
4913
4914                # open patch output
4915                open $fd, "-|", git_cmd(), "diff", @diff_opts,
4916                        '-p', ($format eq 'html' ? "--full-index" : ()),
4917                        $hash_parent, $hash, "--"
4918                        or die_error(undef, "Open git-diff failed");
4919        } else  {
4920                die_error('404 Not Found', "Missing one of the blob diff parameters")
4921                        unless %diffinfo;
4922        }
4923
4924        # header
4925        if ($format eq 'html') {
4926                my $formats_nav =
4927                        $cgi->a({-href => href(action=>"blobdiff_plain", -replay=>1)},
4928                                "raw");
4929                git_header_html(undef, $expires);
4930                if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4931                        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4932                        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4933                } else {
4934                        print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
4935                        print "<div class=\"title\">$hash vs $hash_parent</div>\n";
4936                }
4937                if (defined $file_name) {
4938                        git_print_page_path($file_name, "blob", $hash_base);
4939                } else {
4940                        print "<div class=\"page_path\"></div>\n";
4941                }
4942
4943        } elsif ($format eq 'plain') {
4944                print $cgi->header(
4945                        -type => 'text/plain',
4946                        -charset => 'utf-8',
4947                        -expires => $expires,
4948                        -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
4949
4950                print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4951
4952        } else {
4953                die_error(undef, "Unknown blobdiff format");
4954        }
4955
4956        # patch
4957        if ($format eq 'html') {
4958                print "<div class=\"page_body\">\n";
4959
4960                git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
4961                close $fd;
4962
4963                print "</div>\n"; # class="page_body"
4964                git_footer_html();
4965
4966        } else {
4967                while (my $line = <$fd>) {
4968                        $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
4969                        $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
4970
4971                        print $line;
4972
4973                        last if $line =~ m!^\+\+\+!;
4974                }
4975                local $/ = undef;
4976                print <$fd>;
4977                close $fd;
4978        }
4979}
4980
4981sub git_blobdiff_plain {
4982        git_blobdiff('plain');
4983}
4984
4985sub git_commitdiff {
4986        my $format = shift || 'html';
4987        $hash ||= $hash_base || "HEAD";
4988        my %co = parse_commit($hash);
4989        if (!%co) {
4990                die_error(undef, "Unknown commit object");
4991        }
4992
4993        # choose format for commitdiff for merge
4994        if (! defined $hash_parent && @{$co{'parents'}} > 1) {
4995                $hash_parent = '--cc';
4996        }
4997        # we need to prepare $formats_nav before almost any parameter munging
4998        my $formats_nav;
4999        if ($format eq 'html') {
5000                $formats_nav =
5001                        $cgi->a({-href => href(action=>"commitdiff_plain", -replay=>1)},
5002                                "raw");
5003
5004                if (defined $hash_parent &&
5005                    $hash_parent ne '-c' && $hash_parent ne '--cc') {
5006                        # commitdiff with two commits given
5007                        my $hash_parent_short = $hash_parent;
5008                        if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
5009                                $hash_parent_short = substr($hash_parent, 0, 7);
5010                        }
5011                        $formats_nav .=
5012                                ' (from';
5013                        for (my $i = 0; $i < @{$co{'parents'}}; $i++) {
5014                                if ($co{'parents'}[$i] eq $hash_parent) {
5015                                        $formats_nav .= ' parent ' . ($i+1);
5016                                        last;
5017                                }
5018                        }
5019                        $formats_nav .= ': ' .
5020                                $cgi->a({-href => href(action=>"commitdiff",
5021                                                       hash=>$hash_parent)},
5022                                        esc_html($hash_parent_short)) .
5023                                ')';
5024                } elsif (!$co{'parent'}) {
5025                        # --root commitdiff
5026                        $formats_nav .= ' (initial)';
5027                } elsif (scalar @{$co{'parents'}} == 1) {
5028                        # single parent commit
5029                        $formats_nav .=
5030                                ' (parent: ' .
5031                                $cgi->a({-href => href(action=>"commitdiff",
5032                                                       hash=>$co{'parent'})},
5033                                        esc_html(substr($co{'parent'}, 0, 7))) .
5034                                ')';
5035                } else {
5036                        # merge commit
5037                        if ($hash_parent eq '--cc') {
5038                                $formats_nav .= ' | ' .
5039                                        $cgi->a({-href => href(action=>"commitdiff",
5040                                                               hash=>$hash, hash_parent=>'-c')},
5041                                                'combined');
5042                        } else { # $hash_parent eq '-c'
5043                                $formats_nav .= ' | ' .
5044                                        $cgi->a({-href => href(action=>"commitdiff",
5045                                                               hash=>$hash, hash_parent=>'--cc')},
5046                                                'compact');
5047                        }
5048                        $formats_nav .=
5049                                ' (merge: ' .
5050                                join(' ', map {
5051                                        $cgi->a({-href => href(action=>"commitdiff",
5052                                                               hash=>$_)},
5053                                                esc_html(substr($_, 0, 7)));
5054                                } @{$co{'parents'}} ) .
5055                                ')';
5056                }
5057        }
5058
5059        my $hash_parent_param = $hash_parent;
5060        if (!defined $hash_parent_param) {
5061                # --cc for multiple parents, --root for parentless
5062                $hash_parent_param =
5063                        @{$co{'parents'}} > 1 ? '--cc' : $co{'parent'} || '--root';
5064        }
5065
5066        # read commitdiff
5067        my $fd;
5068        my @difftree;
5069        if ($format eq 'html') {
5070                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
5071                        "--no-commit-id", "--patch-with-raw", "--full-index",
5072                        $hash_parent_param, $hash, "--"
5073                        or die_error(undef, "Open git-diff-tree failed");
5074
5075                while (my $line = <$fd>) {
5076                        chomp $line;
5077                        # empty line ends raw part of diff-tree output
5078                        last unless $line;
5079                        push @difftree, scalar parse_difftree_raw_line($line);
5080                }
5081
5082        } elsif ($format eq 'plain') {
5083                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
5084                        '-p', $hash_parent_param, $hash, "--"
5085                        or die_error(undef, "Open git-diff-tree failed");
5086
5087        } else {
5088                die_error(undef, "Unknown commitdiff format");
5089        }
5090
5091        # non-textual hash id's can be cached
5092        my $expires;
5093        if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
5094                $expires = "+1d";
5095        }
5096
5097        # write commit message
5098        if ($format eq 'html') {
5099                my $refs = git_get_references();
5100                my $ref = format_ref_marker($refs, $co{'id'});
5101
5102                git_header_html(undef, $expires);
5103                git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
5104                git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
5105                git_print_authorship(\%co);
5106                print "<div class=\"page_body\">\n";
5107                if (@{$co{'comment'}} > 1) {
5108                        print "<div class=\"log\">\n";
5109                        git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
5110                        print "</div>\n"; # class="log"
5111                }
5112
5113        } elsif ($format eq 'plain') {
5114                my $refs = git_get_references("tags");
5115                my $tagname = git_get_rev_name_tags($hash);
5116                my $filename = basename($project) . "-$hash.patch";
5117
5118                print $cgi->header(
5119                        -type => 'text/plain',
5120                        -charset => 'utf-8',
5121                        -expires => $expires,
5122                        -content_disposition => 'inline; filename="' . "$filename" . '"');
5123                my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
5124                print "From: " . to_utf8($co{'author'}) . "\n";
5125                print "Date: $ad{'rfc2822'} ($ad{'tz_local'})\n";
5126                print "Subject: " . to_utf8($co{'title'}) . "\n";
5127
5128                print "X-Git-Tag: $tagname\n" if $tagname;
5129                print "X-Git-Url: " . $cgi->self_url() . "\n\n";
5130
5131                foreach my $line (@{$co{'comment'}}) {
5132                        print to_utf8($line) . "\n";
5133                }
5134                print "---\n\n";
5135        }
5136
5137        # write patch
5138        if ($format eq 'html') {
5139                my $use_parents = !defined $hash_parent ||
5140                        $hash_parent eq '-c' || $hash_parent eq '--cc';
5141                git_difftree_body(\@difftree, $hash,
5142                                  $use_parents ? @{$co{'parents'}} : $hash_parent);
5143                print "<br/>\n";
5144
5145                git_patchset_body($fd, \@difftree, $hash,
5146                                  $use_parents ? @{$co{'parents'}} : $hash_parent);
5147                close $fd;
5148                print "</div>\n"; # class="page_body"
5149                git_footer_html();
5150
5151        } elsif ($format eq 'plain') {
5152                local $/ = undef;
5153                print <$fd>;
5154                close $fd
5155                        or print "Reading git-diff-tree failed\n";
5156        }
5157}
5158
5159sub git_commitdiff_plain {
5160        git_commitdiff('plain');
5161}
5162
5163sub git_history {
5164        if (!defined $hash_base) {
5165                $hash_base = git_get_head_hash($project);
5166        }
5167        if (!defined $page) {
5168                $page = 0;
5169        }
5170        my $ftype;
5171        my %co = parse_commit($hash_base);
5172        if (!%co) {
5173                die_error(undef, "Unknown commit object");
5174        }
5175
5176        my $refs = git_get_references();
5177        my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
5178
5179        my @commitlist = parse_commits($hash_base, 101, (100 * $page),
5180                                       $file_name, "--full-history");
5181        if (!@commitlist) {
5182                die_error('404 Not Found', "No such file or directory on given branch");
5183        }
5184
5185        if (!defined $hash && defined $file_name) {
5186                # some commits could have deleted file in question,
5187                # and not have it in tree, but one of them has to have it
5188                for (my $i = 0; $i <= @commitlist; $i++) {
5189                        $hash = git_get_hash_by_path($commitlist[$i]{'id'}, $file_name);
5190                        last if defined $hash;
5191                }
5192        }
5193        if (defined $hash) {
5194                $ftype = git_get_type($hash);
5195        }
5196        if (!defined $ftype) {
5197                die_error(undef, "Unknown type of object");
5198        }
5199
5200        my $paging_nav = '';
5201        if ($page > 0) {
5202                $paging_nav .=
5203                        $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
5204                                               file_name=>$file_name)},
5205                                "first");
5206                $paging_nav .= " &sdot; " .
5207                        $cgi->a({-href => href(-replay=>1, page=>$page-1),
5208                                 -accesskey => "p", -title => "Alt-p"}, "prev");
5209        } else {
5210                $paging_nav .= "first";
5211                $paging_nav .= " &sdot; prev";
5212        }
5213        my $next_link = '';
5214        if ($#commitlist >= 100) {
5215                $next_link =
5216                        $cgi->a({-href => href(-replay=>1, page=>$page+1),
5217                                 -accesskey => "n", -title => "Alt-n"}, "next");
5218                $paging_nav .= " &sdot; $next_link";
5219        } else {
5220                $paging_nav .= " &sdot; next";
5221        }
5222
5223        git_header_html();
5224        git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
5225        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
5226        git_print_page_path($file_name, $ftype, $hash_base);
5227
5228        git_history_body(\@commitlist, 0, 99,
5229                         $refs, $hash_base, $ftype, $next_link);
5230
5231        git_footer_html();
5232}
5233
5234sub git_search {
5235        my ($have_search) = gitweb_check_feature('search');
5236        if (!$have_search) {
5237                die_error('403 Permission denied', "Permission denied");
5238        }
5239        if (!defined $searchtext) {
5240                die_error(undef, "Text field empty");
5241        }
5242        if (!defined $hash) {
5243                $hash = git_get_head_hash($project);
5244        }
5245        my %co = parse_commit($hash);
5246        if (!%co) {
5247                die_error(undef, "Unknown commit object");
5248        }
5249        if (!defined $page) {
5250                $page = 0;
5251        }
5252
5253        $searchtype ||= 'commit';
5254        if ($searchtype eq 'pickaxe') {
5255                # pickaxe may take all resources of your box and run for several minutes
5256                # with every query - so decide by yourself how public you make this feature
5257                my ($have_pickaxe) = gitweb_check_feature('pickaxe');
5258                if (!$have_pickaxe) {
5259                        die_error('403 Permission denied', "Permission denied");
5260                }
5261        }
5262        if ($searchtype eq 'grep') {
5263                my ($have_grep) = gitweb_check_feature('grep');
5264                if (!$have_grep) {
5265                        die_error('403 Permission denied', "Permission denied");
5266                }
5267        }
5268
5269        git_header_html();
5270
5271        if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
5272                my $greptype;
5273                if ($searchtype eq 'commit') {
5274                        $greptype = "--grep=";
5275                } elsif ($searchtype eq 'author') {
5276                        $greptype = "--author=";
5277                } elsif ($searchtype eq 'committer') {
5278                        $greptype = "--committer=";
5279                }
5280                $greptype .= $searchtext;
5281                my @commitlist = parse_commits($hash, 101, (100 * $page), undef,
5282                                               $greptype, '--regexp-ignore-case',
5283                                               $search_use_regexp ? '--extended-regexp' : '--fixed-strings');
5284
5285                my $paging_nav = '';
5286                if ($page > 0) {
5287                        $paging_nav .=
5288                                $cgi->a({-href => href(action=>"search", hash=>$hash,
5289                                                       searchtext=>$searchtext,
5290                                                       searchtype=>$searchtype)},
5291                                        "first");
5292                        $paging_nav .= " &sdot; " .
5293                                $cgi->a({-href => href(-replay=>1, page=>$page-1),
5294                                         -accesskey => "p", -title => "Alt-p"}, "prev");
5295                } else {
5296                        $paging_nav .= "first";
5297                        $paging_nav .= " &sdot; prev";
5298                }
5299                my $next_link = '';
5300                if ($#commitlist >= 100) {
5301                        $next_link =
5302                                $cgi->a({-href => href(-replay=>1, page=>$page+1),
5303                                         -accesskey => "n", -title => "Alt-n"}, "next");
5304                        $paging_nav .= " &sdot; $next_link";
5305                } else {
5306                        $paging_nav .= " &sdot; next";
5307                }
5308
5309                if ($#commitlist >= 100) {
5310                }
5311
5312                git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
5313                git_print_header_div('commit', esc_html($co{'title'}), $hash);
5314                git_search_grep_body(\@commitlist, 0, 99, $next_link);
5315        }
5316
5317        if ($searchtype eq 'pickaxe') {
5318                git_print_page_nav('','', $hash,$co{'tree'},$hash);
5319                git_print_header_div('commit', esc_html($co{'title'}), $hash);
5320
5321                print "<table class=\"pickaxe search\">\n";
5322                my $alternate = 1;
5323                $/ = "\n";
5324                open my $fd, '-|', git_cmd(), '--no-pager', 'log', @diff_opts,
5325                        '--pretty=format:%H', '--no-abbrev', '--raw', "-S$searchtext",
5326                        ($search_use_regexp ? '--pickaxe-regex' : ());
5327                undef %co;
5328                my @files;
5329                while (my $line = <$fd>) {
5330                        chomp $line;
5331                        next unless $line;
5332
5333                        my %set = parse_difftree_raw_line($line);
5334                        if (defined $set{'commit'}) {
5335                                # finish previous commit
5336                                if (%co) {
5337                                        print "</td>\n" .
5338                                              "<td class=\"link\">" .
5339                                              $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
5340                                              " | " .
5341                                              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
5342                                        print "</td>\n" .
5343                                              "</tr>\n";
5344                                }
5345
5346                                if ($alternate) {
5347                                        print "<tr class=\"dark\">\n";
5348                                } else {
5349                                        print "<tr class=\"light\">\n";
5350                                }
5351                                $alternate ^= 1;
5352                                %co = parse_commit($set{'commit'});
5353                                my $author = chop_and_escape_str($co{'author_name'}, 15, 5);
5354                                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
5355                                      "<td><i>$author</i></td>\n" .
5356                                      "<td>" .
5357                                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
5358                                              -class => "list subject"},
5359                                              chop_and_escape_str($co{'title'}, 50) . "<br/>");
5360                        } elsif (defined $set{'to_id'}) {
5361                                next if ($set{'to_id'} =~ m/^0{40}$/);
5362
5363                                print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
5364                                                             hash=>$set{'to_id'}, file_name=>$set{'to_file'}),
5365                                              -class => "list"},
5366                                              "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
5367                                      "<br/>\n";
5368                        }
5369                }
5370                close $fd;
5371
5372                # finish last commit (warning: repetition!)
5373                if (%co) {
5374                        print "</td>\n" .
5375                              "<td class=\"link\">" .
5376                              $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
5377                              " | " .
5378                              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
5379                        print "</td>\n" .
5380                              "</tr>\n";
5381                }
5382
5383                print "</table>\n";
5384        }
5385
5386        if ($searchtype eq 'grep') {
5387                git_print_page_nav('','', $hash,$co{'tree'},$hash);
5388                git_print_header_div('commit', esc_html($co{'title'}), $hash);
5389
5390                print "<table class=\"grep_search\">\n";
5391                my $alternate = 1;
5392                my $matches = 0;
5393                $/ = "\n";
5394                open my $fd, "-|", git_cmd(), 'grep', '-n',
5395                        $search_use_regexp ? ('-E', '-i') : '-F',
5396                        $searchtext, $co{'tree'};
5397                my $lastfile = '';
5398                while (my $line = <$fd>) {
5399                        chomp $line;
5400                        my ($file, $lno, $ltext, $binary);
5401                        last if ($matches++ > 1000);
5402                        if ($line =~ /^Binary file (.+) matches$/) {
5403                                $file = $1;
5404                                $binary = 1;
5405                        } else {
5406                                (undef, $file, $lno, $ltext) = split(/:/, $line, 4);
5407                        }
5408                        if ($file ne $lastfile) {
5409                                $lastfile and print "</td></tr>\n";
5410                                if ($alternate++) {
5411                                        print "<tr class=\"dark\">\n";
5412                                } else {
5413                                        print "<tr class=\"light\">\n";
5414                                }
5415                                print "<td class=\"list\">".
5416                                        $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
5417                                                               file_name=>"$file"),
5418                                                -class => "list"}, esc_path($file));
5419                                print "</td><td>\n";
5420                                $lastfile = $file;
5421                        }
5422                        if ($binary) {
5423                                print "<div class=\"binary\">Binary file</div>\n";
5424                        } else {
5425                                $ltext = untabify($ltext);
5426                                if ($ltext =~ m/^(.*)($search_regexp)(.*)$/i) {
5427                                        $ltext = esc_html($1, -nbsp=>1);
5428                                        $ltext .= '<span class="match">';
5429                                        $ltext .= esc_html($2, -nbsp=>1);
5430                                        $ltext .= '</span>';
5431                                        $ltext .= esc_html($3, -nbsp=>1);
5432                                } else {
5433                                        $ltext = esc_html($ltext, -nbsp=>1);
5434                                }
5435                                print "<div class=\"pre\">" .
5436                                        $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
5437                                                               file_name=>"$file").'#l'.$lno,
5438                                                -class => "linenr"}, sprintf('%4i', $lno))
5439                                        . ' ' .  $ltext . "</div>\n";
5440                        }
5441                }
5442                if ($lastfile) {
5443                        print "</td></tr>\n";
5444                        if ($matches > 1000) {
5445                                print "<div class=\"diff nodifferences\">Too many matches, listing trimmed</div>\n";
5446                        }
5447                } else {
5448                        print "<div class=\"diff nodifferences\">No matches found</div>\n";
5449                }
5450                close $fd;
5451
5452                print "</table>\n";
5453        }
5454        git_footer_html();
5455}
5456
5457sub git_search_help {
5458        git_header_html();
5459        git_print_page_nav('','', $hash,$hash,$hash);
5460        print <<EOT;
5461<p><strong>Pattern</strong> is by default a normal string that is matched precisely (but without
5462regard to case, except in the case of pickaxe). However, when you check the <em>re</em> checkbox,
5463the pattern entered is recognized as the POSIX extended
5464<a href="http://en.wikipedia.org/wiki/Regular_expression">regular expression</a> (also case
5465insensitive).</p>
5466<dl>
5467<dt><b>commit</b></dt>
5468<dd>The commit messages and authorship information will be scanned for the given pattern.</dd>
5469EOT
5470        my ($have_grep) = gitweb_check_feature('grep');
5471        if ($have_grep) {
5472                print <<EOT;
5473<dt><b>grep</b></dt>
5474<dd>All files in the currently selected tree (HEAD unless you are explicitly browsing
5475    a different one) are searched for the given pattern. On large trees, this search can take
5476a while and put some strain on the server, so please use it with some consideration. Note that
5477due to git-grep peculiarity, currently if regexp mode is turned off, the matches are
5478case-sensitive.</dd>
5479EOT
5480        }
5481        print <<EOT;
5482<dt><b>author</b></dt>
5483<dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given pattern.</dd>
5484<dt><b>committer</b></dt>
5485<dd>Name and e-mail of the committer and date of commit will be scanned for the given pattern.</dd>
5486EOT
5487        my ($have_pickaxe) = gitweb_check_feature('pickaxe');
5488        if ($have_pickaxe) {
5489                print <<EOT;
5490<dt><b>pickaxe</b></dt>
5491<dd>All commits that caused the string to appear or disappear from any file (changes that
5492added, removed or "modified" the string) will be listed. This search can take a while and
5493takes a lot of strain on the server, so please use it wisely. Note that since you may be
5494interested even in changes just changing the case as well, this search is case sensitive.</dd>
5495EOT
5496        }
5497        print "</dl>\n";
5498        git_footer_html();
5499}
5500
5501sub git_shortlog {
5502        my $head = git_get_head_hash($project);
5503        if (!defined $hash) {
5504                $hash = $head;
5505        }
5506        if (!defined $page) {
5507                $page = 0;
5508        }
5509        my $refs = git_get_references();
5510
5511        my @commitlist = parse_commits($hash, 101, (100 * $page));
5512
5513        my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, (100 * ($page+1)));
5514        my $next_link = '';
5515        if ($#commitlist >= 100) {
5516                $next_link =
5517                        $cgi->a({-href => href(-replay=>1, page=>$page+1),
5518                                 -accesskey => "n", -title => "Alt-n"}, "next");
5519        }
5520
5521        git_header_html();
5522        git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
5523        git_print_header_div('summary', $project);
5524
5525        git_shortlog_body(\@commitlist, 0, 99, $refs, $next_link);
5526
5527        git_footer_html();
5528}
5529
5530## ......................................................................
5531## feeds (RSS, Atom; OPML)
5532
5533sub git_feed {
5534        my $format = shift || 'atom';
5535        my ($have_blame) = gitweb_check_feature('blame');
5536
5537        # Atom: http://www.atomenabled.org/developers/syndication/
5538        # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
5539        if ($format ne 'rss' && $format ne 'atom') {
5540                die_error(undef, "Unknown web feed format");
5541        }
5542
5543        # log/feed of current (HEAD) branch, log of given branch, history of file/directory
5544        my $head = $hash || 'HEAD';
5545        my @commitlist = parse_commits($head, 150, 0, $file_name);
5546
5547        my %latest_commit;
5548        my %latest_date;
5549        my $content_type = "application/$format+xml";
5550        if (defined $cgi->http('HTTP_ACCEPT') &&
5551                 $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
5552                # browser (feed reader) prefers text/xml
5553                $content_type = 'text/xml';
5554        }
5555        if (defined($commitlist[0])) {
5556                %latest_commit = %{$commitlist[0]};
5557                %latest_date   = parse_date($latest_commit{'author_epoch'});
5558                print $cgi->header(
5559                        -type => $content_type,
5560                        -charset => 'utf-8',
5561                        -last_modified => $latest_date{'rfc2822'});
5562        } else {
5563                print $cgi->header(
5564                        -type => $content_type,
5565                        -charset => 'utf-8');
5566        }
5567
5568        # Optimization: skip generating the body if client asks only
5569        # for Last-Modified date.
5570        return if ($cgi->request_method() eq 'HEAD');
5571
5572        # header variables
5573        my $title = "$site_name - $project/$action";
5574        my $feed_type = 'log';
5575        if (defined $hash) {
5576                $title .= " - '$hash'";
5577                $feed_type = 'branch log';
5578                if (defined $file_name) {
5579                        $title .= " :: $file_name";
5580                        $feed_type = 'history';
5581                }
5582        } elsif (defined $file_name) {
5583                $title .= " - $file_name";
5584                $feed_type = 'history';
5585        }
5586        $title .= " $feed_type";
5587        my $descr = git_get_project_description($project);
5588        if (defined $descr) {
5589                $descr = esc_html($descr);
5590        } else {
5591                $descr = "$project " .
5592                         ($format eq 'rss' ? 'RSS' : 'Atom') .
5593                         " feed";
5594        }
5595        my $owner = git_get_project_owner($project);
5596        $owner = esc_html($owner);
5597
5598        #header
5599        my $alt_url;
5600        if (defined $file_name) {
5601                $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
5602        } elsif (defined $hash) {
5603                $alt_url = href(-full=>1, action=>"log", hash=>$hash);
5604        } else {
5605                $alt_url = href(-full=>1, action=>"summary");
5606        }
5607        print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
5608        if ($format eq 'rss') {
5609                print <<XML;
5610<rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
5611<channel>
5612XML
5613                print "<title>$title</title>\n" .
5614                      "<link>$alt_url</link>\n" .
5615                      "<description>$descr</description>\n" .
5616                      "<language>en</language>\n";
5617        } elsif ($format eq 'atom') {
5618                print <<XML;
5619<feed xmlns="http://www.w3.org/2005/Atom">
5620XML
5621                print "<title>$title</title>\n" .
5622                      "<subtitle>$descr</subtitle>\n" .
5623                      '<link rel="alternate" type="text/html" href="' .
5624                      $alt_url . '" />' . "\n" .
5625                      '<link rel="self" type="' . $content_type . '" href="' .
5626                      $cgi->self_url() . '" />' . "\n" .
5627                      "<id>" . href(-full=>1) . "</id>\n" .
5628                      # use project owner for feed author
5629                      "<author><name>$owner</name></author>\n";
5630                if (defined $favicon) {
5631                        print "<icon>" . esc_url($favicon) . "</icon>\n";
5632                }
5633                if (defined $logo_url) {
5634                        # not twice as wide as tall: 72 x 27 pixels
5635                        print "<logo>" . esc_url($logo) . "</logo>\n";
5636                }
5637                if (! %latest_date) {
5638                        # dummy date to keep the feed valid until commits trickle in:
5639                        print "<updated>1970-01-01T00:00:00Z</updated>\n";
5640                } else {
5641                        print "<updated>$latest_date{'iso-8601'}</updated>\n";
5642                }
5643        }
5644
5645        # contents
5646        for (my $i = 0; $i <= $#commitlist; $i++) {
5647                my %co = %{$commitlist[$i]};
5648                my $commit = $co{'id'};
5649                # we read 150, we always show 30 and the ones more recent than 48 hours
5650                if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
5651                        last;
5652                }
5653                my %cd = parse_date($co{'author_epoch'});
5654
5655                # get list of changed files
5656                open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
5657                        $co{'parent'} || "--root",
5658                        $co{'id'}, "--", (defined $file_name ? $file_name : ())
5659                        or next;
5660                my @difftree = map { chomp; $_ } <$fd>;
5661                close $fd
5662                        or next;
5663
5664                # print element (entry, item)
5665                my $co_url = href(-full=>1, action=>"commitdiff", hash=>$commit);
5666                if ($format eq 'rss') {
5667                        print "<item>\n" .
5668                              "<title>" . esc_html($co{'title'}) . "</title>\n" .
5669                              "<author>" . esc_html($co{'author'}) . "</author>\n" .
5670                              "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
5671                              "<guid isPermaLink=\"true\">$co_url</guid>\n" .
5672                              "<link>$co_url</link>\n" .
5673                              "<description>" . esc_html($co{'title'}) . "</description>\n" .
5674                              "<content:encoded>" .
5675                              "<![CDATA[\n";
5676                } elsif ($format eq 'atom') {
5677                        print "<entry>\n" .
5678                              "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
5679                              "<updated>$cd{'iso-8601'}</updated>\n" .
5680                              "<author>\n" .
5681                              "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
5682                        if ($co{'author_email'}) {
5683                                print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
5684                        }
5685                        print "</author>\n" .
5686                              # use committer for contributor
5687                              "<contributor>\n" .
5688                              "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
5689                        if ($co{'committer_email'}) {
5690                                print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
5691                        }
5692                        print "</contributor>\n" .
5693                              "<published>$cd{'iso-8601'}</published>\n" .
5694                              "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
5695                              "<id>$co_url</id>\n" .
5696                              "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
5697                              "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
5698                }
5699                my $comment = $co{'comment'};
5700                print "<pre>\n";
5701                foreach my $line (@$comment) {
5702                        $line = esc_html($line);
5703                        print "$line\n";
5704                }
5705                print "</pre><ul>\n";
5706                foreach my $difftree_line (@difftree) {
5707                        my %difftree = parse_difftree_raw_line($difftree_line);
5708                        next if !$difftree{'from_id'};
5709
5710                        my $file = $difftree{'file'} || $difftree{'to_file'};
5711
5712                        print "<li>" .
5713                              "[" .
5714                              $cgi->a({-href => href(-full=>1, action=>"blobdiff",
5715                                                     hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
5716                                                     hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
5717                                                     file_name=>$file, file_parent=>$difftree{'from_file'}),
5718                                      -title => "diff"}, 'D');
5719                        if ($have_blame) {
5720                                print $cgi->a({-href => href(-full=>1, action=>"blame",
5721                                                             file_name=>$file, hash_base=>$commit),
5722                                              -title => "blame"}, 'B');
5723                        }
5724                        # if this is not a feed of a file history
5725                        if (!defined $file_name || $file_name ne $file) {
5726                                print $cgi->a({-href => href(-full=>1, action=>"history",
5727                                                             file_name=>$file, hash=>$commit),
5728                                              -title => "history"}, 'H');
5729                        }
5730                        $file = esc_path($file);
5731                        print "] ".
5732                              "$file</li>\n";
5733                }
5734                if ($format eq 'rss') {
5735                        print "</ul>]]>\n" .
5736                              "</content:encoded>\n" .
5737                              "</item>\n";
5738                } elsif ($format eq 'atom') {
5739                        print "</ul>\n</div>\n" .
5740                              "</content>\n" .
5741                              "</entry>\n";
5742                }
5743        }
5744
5745        # end of feed
5746        if ($format eq 'rss') {
5747                print "</channel>\n</rss>\n";
5748        }       elsif ($format eq 'atom') {
5749                print "</feed>\n";
5750        }
5751}
5752
5753sub git_rss {
5754        git_feed('rss');
5755}
5756
5757sub git_atom {
5758        git_feed('atom');
5759}
5760
5761sub git_opml {
5762        my @list = git_get_projects_list();
5763
5764        print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
5765        print <<XML;
5766<?xml version="1.0" encoding="utf-8"?>
5767<opml version="1.0">
5768<head>
5769  <title>$site_name OPML Export</title>
5770</head>
5771<body>
5772<outline text="git RSS feeds">
5773XML
5774
5775        foreach my $pr (@list) {
5776                my %proj = %$pr;
5777                my $head = git_get_head_hash($proj{'path'});
5778                if (!defined $head) {
5779                        next;
5780                }
5781                $git_dir = "$projectroot/$proj{'path'}";
5782                my %co = parse_commit($head);
5783                if (!%co) {
5784                        next;
5785                }
5786
5787                my $path = esc_html(chop_str($proj{'path'}, 25, 5));
5788                my $rss  = "$my_url?p=$proj{'path'};a=rss";
5789                my $html = "$my_url?p=$proj{'path'};a=summary";
5790                print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
5791        }
5792        print <<XML;
5793</outline>
5794</body>
5795</opml>
5796XML
5797}