Andrew's git - gitweb.git/blob - gitweb/gitweb.perl

   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        # Make sure perl knows it is utf8 encoded so we don't
 870        # cut in the middle of a utf8 multibyte char.
 871        $str = to_utf8($str);
 872
 873        # allow only $len chars, but don't cut a word if it would fit in $add_len
 874        # if it doesn't fit, cut it if it's still longer than the dots we would add
 875        # remove chopped character entities entirely
 876
 877        # when chopping in the middle, distribute $len into left and right part
 878        # return early if chopping wouldn't make string shorter
 879        if ($where eq 'center') {
 880                return $str if ($len + 5 >= length($str)); # filler is length 5
 881                $len = int($len/2);
 882        } else {
 883                return $str if ($len + 4 >= length($str)); # filler is length 4
 884        }
 885
 886        # regexps: ending and beginning with word part up to $add_len
 887        my $endre = qr/.{$len}\w{0,$add_len}/;
 888        my $begre = qr/\w{0,$add_len}.{$len}/;
 889
 890        if ($where eq 'left') {
 891                $str =~ m/^(.*?)($begre)$/;
 892                my ($lead, $body) = ($1, $2);
 893                if (length($lead) > 4) {
 894                        $body =~ s/^[^;]*;// if ($lead =~ m/&[^;]*$/);
 895                        $lead = " ...";
 896                }
 897                return "$lead$body";
 898
 899        } elsif ($where eq 'center') {
 900                $str =~ m/^($endre)(.*)$/;
 901                my ($left, $str)  = ($1, $2);
 902                $str =~ m/^(.*?)($begre)$/;
 903                my ($mid, $right) = ($1, $2);
 904                if (length($mid) > 5) {
 905                        $left  =~ s/&[^;]*$//;
 906                        $right =~ s/^[^;]*;// if ($mid =~ m/&[^;]*$/);
 907                        $mid = " ... ";
 908                }
 909                return "$left$mid$right";
 910
 911        } else {
 912                $str =~ m/^($endre)(.*)$/;
 913                my $body = $1;
 914                my $tail = $2;
 915                if (length($tail) > 4) {
 916                        $body =~ s/&[^;]*$//;
 917                        $tail = "... ";
 918                }
 919                return "$body$tail";
 920        }
 921}
 922
 923# takes the same arguments as chop_str, but also wraps a <span> around the
 924# result with a title attribute if it does get chopped. Additionally, the
 925# string is HTML-escaped.
 926sub chop_and_escape_str {
 927        my ($str) = @_;
 928
 929        my $chopped = chop_str(@_);
 930        if ($chopped eq $str) {
 931                return esc_html($chopped);
 932        } else {
 933                $str =~ s/([[:cntrl:]])/?/g;
 934                return $cgi->span({-title=>$str}, esc_html($chopped));
 935        }
 936}
 937
 938## ----------------------------------------------------------------------
 939## functions returning short strings
 940
 941# CSS class for given age value (in seconds)
 942sub age_class {
 943        my $age = shift;
 944
 945        if (!defined $age) {
 946                return "noage";
 947        } elsif ($age < 60*60*2) {
 948                return "age0";
 949        } elsif ($age < 60*60*24*2) {
 950                return "age1";
 951        } else {
 952                return "age2";
 953        }
 954}
 955
 956# convert age in seconds to "nn units ago" string
 957sub age_string {
 958        my $age = shift;
 959        my $age_str;
 960
 961        if ($age > 60*60*24*365*2) {
 962                $age_str = (int $age/60/60/24/365);
 963                $age_str .= " years ago";
 964        } elsif ($age > 60*60*24*(365/12)*2) {
 965                $age_str = int $age/60/60/24/(365/12);
 966                $age_str .= " months ago";
 967        } elsif ($age > 60*60*24*7*2) {
 968                $age_str = int $age/60/60/24/7;
 969                $age_str .= " weeks ago";
 970        } elsif ($age > 60*60*24*2) {
 971                $age_str = int $age/60/60/24;
 972                $age_str .= " days ago";
 973        } elsif ($age > 60*60*2) {
 974                $age_str = int $age/60/60;
 975                $age_str .= " hours ago";
 976        } elsif ($age > 60*2) {
 977                $age_str = int $age/60;
 978                $age_str .= " min ago";
 979        } elsif ($age > 2) {
 980                $age_str = int $age;
 981                $age_str .= " sec ago";
 982        } else {
 983                $age_str .= " right now";
 984        }
 985        return $age_str;
 986}
 987
 988use constant {
 989        S_IFINVALID => 0030000,
 990        S_IFGITLINK => 0160000,
 991};
 992
 993# submodule/subproject, a commit object reference
 994sub S_ISGITLINK($) {
 995        my $mode = shift;
 996
 997        return (($mode & S_IFMT) == S_IFGITLINK)
 998}
 999
1000# convert file mode in octal to symbolic file mode string
1001sub mode_str {
1002        my $mode = oct shift;
1003
1004        if (S_ISGITLINK($mode)) {
1005                return 'm---------';
1006        } elsif (S_ISDIR($mode & S_IFMT)) {
1007                return 'drwxr-xr-x';
1008        } elsif (S_ISLNK($mode)) {
1009                return 'lrwxrwxrwx';
1010        } elsif (S_ISREG($mode)) {
1011                # git cares only about the executable bit
1012                if ($mode & S_IXUSR) {
1013                        return '-rwxr-xr-x';
1014                } else {
1015                        return '-rw-r--r--';
1016                };
1017        } else {
1018                return '----------';
1019        }
1020}
1021
1022# convert file mode in octal to file type string
1023sub file_type {
1024        my $mode = shift;
1025
1026        if ($mode !~ m/^[0-7]+$/) {
1027                return $mode;
1028        } else {
1029                $mode = oct $mode;
1030        }
1031
1032        if (S_ISGITLINK($mode)) {
1033                return "submodule";
1034        } elsif (S_ISDIR($mode & S_IFMT)) {
1035                return "directory";
1036        } elsif (S_ISLNK($mode)) {
1037                return "symlink";
1038        } elsif (S_ISREG($mode)) {
1039                return "file";
1040        } else {
1041                return "unknown";
1042        }
1043}
1044
1045# convert file mode in octal to file type description string
1046sub file_type_long {
1047        my $mode = shift;
1048
1049        if ($mode !~ m/^[0-7]+$/) {
1050                return $mode;
1051        } else {
1052                $mode = oct $mode;
1053        }
1054
1055        if (S_ISGITLINK($mode)) {
1056                return "submodule";
1057        } elsif (S_ISDIR($mode & S_IFMT)) {
1058                return "directory";
1059        } elsif (S_ISLNK($mode)) {
1060                return "symlink";
1061        } elsif (S_ISREG($mode)) {
1062                if ($mode & S_IXUSR) {
1063                        return "executable";
1064                } else {
1065                        return "file";
1066                };
1067        } else {
1068                return "unknown";
1069        }
1070}
1071
1072
1073## ----------------------------------------------------------------------
1074## functions returning short HTML fragments, or transforming HTML fragments
1075## which don't belong to other sections
1076
1077# format line of commit message.
1078sub format_log_line_html {
1079        my $line = shift;
1080
1081        $line = esc_html($line, -nbsp=>1);
1082        if ($line =~ m/([0-9a-fA-F]{8,40})/) {
1083                my $hash_text = $1;
1084                my $link =
1085                        $cgi->a({-href => href(action=>"object", hash=>$hash_text),
1086                                -class => "text"}, $hash_text);
1087                $line =~ s/$hash_text/$link/;
1088        }
1089        return $line;
1090}
1091
1092# format marker of refs pointing to given object
1093sub format_ref_marker {
1094        my ($refs, $id) = @_;
1095        my $markers = '';
1096
1097        if (defined $refs->{$id}) {
1098                foreach my $ref (@{$refs->{$id}}) {
1099                        my ($type, $name) = qw();
1100                        # e.g. tags/v2.6.11 or heads/next
1101                        if ($ref =~ m!^(.*?)s?/(.*)$!) {
1102                                $type = $1;
1103                                $name = $2;
1104                        } else {
1105                                $type = "ref";
1106                                $name = $ref;
1107                        }
1108
1109                        $markers .= " <span class=\"$type\" title=\"$ref\">" .
1110                                    esc_html($name) . "</span>";
1111                }
1112        }
1113
1114        if ($markers) {
1115                return ' <span class="refs">'. $markers . '</span>';
1116        } else {
1117                return "";
1118        }
1119}
1120
1121# format, perhaps shortened and with markers, title line
1122sub format_subject_html {
1123        my ($long, $short, $href, $extra) = @_;
1124        $extra = '' unless defined($extra);
1125
1126        if (length($short) < length($long)) {
1127                return $cgi->a({-href => $href, -class => "list subject",
1128                                -title => to_utf8($long)},
1129                       esc_html($short) . $extra);
1130        } else {
1131                return $cgi->a({-href => $href, -class => "list subject"},
1132                       esc_html($long)  . $extra);
1133        }
1134}
1135
1136# format git diff header line, i.e. "diff --(git|combined|cc) ..."
1137sub format_git_diff_header_line {
1138        my $line = shift;
1139        my $diffinfo = shift;
1140        my ($from, $to) = @_;
1141
1142        if ($diffinfo->{'nparents'}) {
1143                # combined diff
1144                $line =~ s!^(diff (.*?) )"?.*$!$1!;
1145                if ($to->{'href'}) {
1146                        $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
1147                                         esc_path($to->{'file'}));
1148                } else { # file was deleted (no href)
1149                        $line .= esc_path($to->{'file'});
1150                }
1151        } else {
1152                # "ordinary" diff
1153                $line =~ s!^(diff (.*?) )"?a/.*$!$1!;
1154                if ($from->{'href'}) {
1155                        $line .= $cgi->a({-href => $from->{'href'}, -class => "path"},
1156                                         'a/' . esc_path($from->{'file'}));
1157                } else { # file was added (no href)
1158                        $line .= 'a/' . esc_path($from->{'file'});
1159                }
1160                $line .= ' ';
1161                if ($to->{'href'}) {
1162                        $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
1163                                         'b/' . esc_path($to->{'file'}));
1164                } else { # file was deleted
1165                        $line .= 'b/' . esc_path($to->{'file'});
1166                }
1167        }
1168
1169        return "<div class=\"diff header\">$line</div>\n";
1170}
1171
1172# format extended diff header line, before patch itself
1173sub format_extended_diff_header_line {
1174        my $line = shift;
1175        my $diffinfo = shift;
1176        my ($from, $to) = @_;
1177
1178        # match <path>
1179        if ($line =~ s!^((copy|rename) from ).*$!$1! && $from->{'href'}) {
1180                $line .= $cgi->a({-href=>$from->{'href'}, -class=>"path"},
1181                                       esc_path($from->{'file'}));
1182        }
1183        if ($line =~ s!^((copy|rename) to ).*$!$1! && $to->{'href'}) {
1184                $line .= $cgi->a({-href=>$to->{'href'}, -class=>"path"},
1185                                 esc_path($to->{'file'}));
1186        }
1187        # match single <mode>
1188        if ($line =~ m/\s(\d{6})$/) {
1189                $line .= '<span class="info"> (' .
1190                         file_type_long($1) .
1191                         ')</span>';
1192        }
1193        # match <hash>
1194        if ($line =~ m/^index [0-9a-fA-F]{40},[0-9a-fA-F]{40}/) {
1195                # can match only for combined diff
1196                $line = 'index ';
1197                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
1198                        if ($from->{'href'}[$i]) {
1199                                $line .= $cgi->a({-href=>$from->{'href'}[$i],
1200                                                  -class=>"hash"},
1201                                                 substr($diffinfo->{'from_id'}[$i],0,7));
1202                        } else {
1203                                $line .= '0' x 7;
1204                        }
1205                        # separator
1206                        $line .= ',' if ($i < $diffinfo->{'nparents'} - 1);
1207                }
1208                $line .= '..';
1209                if ($to->{'href'}) {
1210                        $line .= $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
1211                                         substr($diffinfo->{'to_id'},0,7));
1212                } else {
1213                        $line .= '0' x 7;
1214                }
1215
1216        } elsif ($line =~ m/^index [0-9a-fA-F]{40}..[0-9a-fA-F]{40}/) {
1217                # can match only for ordinary diff
1218                my ($from_link, $to_link);
1219                if ($from->{'href'}) {
1220                        $from_link = $cgi->a({-href=>$from->{'href'}, -class=>"hash"},
1221                                             substr($diffinfo->{'from_id'},0,7));
1222                } else {
1223                        $from_link = '0' x 7;
1224                }
1225                if ($to->{'href'}) {
1226                        $to_link = $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
1227                                           substr($diffinfo->{'to_id'},0,7));
1228                } else {
1229                        $to_link = '0' x 7;
1230                }
1231                my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
1232                $line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
1233        }
1234
1235        return $line . "<br/>\n";
1236}
1237
1238# format from-file/to-file diff header
1239sub format_diff_from_to_header {
1240        my ($from_line, $to_line, $diffinfo, $from, $to, @parents) = @_;
1241        my $line;
1242        my $result = '';
1243
1244        $line = $from_line;
1245        #assert($line =~ m/^---/) if DEBUG;
1246        # no extra formatting for "^--- /dev/null"
1247        if (! $diffinfo->{'nparents'}) {
1248                # ordinary (single parent) diff
1249                if ($line =~ m!^--- "?a/!) {
1250                        if ($from->{'href'}) {
1251                                $line = '--- a/' .
1252                                        $cgi->a({-href=>$from->{'href'}, -class=>"path"},
1253                                                esc_path($from->{'file'}));
1254                        } else {
1255                                $line = '--- a/' .
1256                                        esc_path($from->{'file'});
1257                        }
1258                }
1259                $result .= qq!<div class="diff from_file">$line</div>\n!;
1260
1261        } else {
1262                # combined diff (merge commit)
1263                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
1264                        if ($from->{'href'}[$i]) {
1265                                $line = '--- ' .
1266                                        $cgi->a({-href=>href(action=>"blobdiff",
1267                                                             hash_parent=>$diffinfo->{'from_id'}[$i],
1268                                                             hash_parent_base=>$parents[$i],
1269                                                             file_parent=>$from->{'file'}[$i],
1270                                                             hash=>$diffinfo->{'to_id'},
1271                                                             hash_base=>$hash,
1272                                                             file_name=>$to->{'file'}),
1273                                                 -class=>"path",
1274                                                 -title=>"diff" . ($i+1)},
1275                                                $i+1) .
1276                                        '/' .
1277                                        $cgi->a({-href=>$from->{'href'}[$i], -class=>"path"},
1278                                                esc_path($from->{'file'}[$i]));
1279                        } else {
1280                                $line = '--- /dev/null';
1281                        }
1282                        $result .= qq!<div class="diff from_file">$line</div>\n!;
1283                }
1284        }
1285
1286        $line = $to_line;
1287        #assert($line =~ m/^\+\+\+/) if DEBUG;
1288        # no extra formatting for "^+++ /dev/null"
1289        if ($line =~ m!^\+\+\+ "?b/!) {
1290                if ($to->{'href'}) {
1291                        $line = '+++ b/' .
1292                                $cgi->a({-href=>$to->{'href'}, -class=>"path"},
1293                                        esc_path($to->{'file'}));
1294                } else {
1295                        $line = '+++ b/' .
1296                                esc_path($to->{'file'});
1297                }
1298        }
1299        $result .= qq!<div class="diff to_file">$line</div>\n!;
1300
1301        return $result;
1302}
1303
1304# create note for patch simplified by combined diff
1305sub format_diff_cc_simplified {
1306        my ($diffinfo, @parents) = @_;
1307        my $result = '';
1308
1309        $result .= "<div class=\"diff header\">" .
1310                   "diff --cc ";
1311        if (!is_deleted($diffinfo)) {
1312                $result .= $cgi->a({-href => href(action=>"blob",
1313                                                  hash_base=>$hash,
1314                                                  hash=>$diffinfo->{'to_id'},
1315                                                  file_name=>$diffinfo->{'to_file'}),
1316                                    -class => "path"},
1317                                   esc_path($diffinfo->{'to_file'}));
1318        } else {
1319                $result .= esc_path($diffinfo->{'to_file'});
1320        }
1321        $result .= "</div>\n" . # class="diff header"
1322                   "<div class=\"diff nodifferences\">" .
1323                   "Simple merge" .
1324                   "</div>\n"; # class="diff nodifferences"
1325
1326        return $result;
1327}
1328
1329# format patch (diff) line (not to be used for diff headers)
1330sub format_diff_line {
1331        my $line = shift;
1332        my ($from, $to) = @_;
1333        my $diff_class = "";
1334
1335        chomp $line;
1336
1337        if ($from && $to && ref($from->{'href'}) eq "ARRAY") {
1338                # combined diff
1339                my $prefix = substr($line, 0, scalar @{$from->{'href'}});
1340                if ($line =~ m/^\@{3}/) {
1341                        $diff_class = " chunk_header";
1342                } elsif ($line =~ m/^\\/) {
1343                        $diff_class = " incomplete";
1344                } elsif ($prefix =~ tr/+/+/) {
1345                        $diff_class = " add";
1346                } elsif ($prefix =~ tr/-/-/) {
1347                        $diff_class = " rem";
1348                }
1349        } else {
1350                # assume ordinary diff
1351                my $char = substr($line, 0, 1);
1352                if ($char eq '+') {
1353                        $diff_class = " add";
1354                } elsif ($char eq '-') {
1355                        $diff_class = " rem";
1356                } elsif ($char eq '@') {
1357                        $diff_class = " chunk_header";
1358                } elsif ($char eq "\\") {
1359                        $diff_class = " incomplete";
1360                }
1361        }
1362        $line = untabify($line);
1363        if ($from && $to && $line =~ m/^\@{2} /) {
1364                my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
1365                        $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
1366
1367                $from_lines = 0 unless defined $from_lines;
1368                $to_lines   = 0 unless defined $to_lines;
1369
1370                if ($from->{'href'}) {
1371                        $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
1372                                             -class=>"list"}, $from_text);
1373                }
1374                if ($to->{'href'}) {
1375                        $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
1376                                             -class=>"list"}, $to_text);
1377                }
1378                $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
1379                        "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
1380                return "<div class=\"diff$diff_class\">$line</div>\n";
1381        } elsif ($from && $to && $line =~ m/^\@{3}/) {
1382                my ($prefix, $ranges, $section) = $line =~ m/^(\@+) (.*?) \@+(.*)$/;
1383                my (@from_text, @from_start, @from_nlines, $to_text, $to_start, $to_nlines);
1384
1385                @from_text = split(' ', $ranges);
1386                for (my $i = 0; $i < @from_text; ++$i) {
1387                        ($from_start[$i], $from_nlines[$i]) =
1388                                (split(',', substr($from_text[$i], 1)), 0);
1389                }
1390
1391                $to_text   = pop @from_text;
1392                $to_start  = pop @from_start;
1393                $to_nlines = pop @from_nlines;
1394
1395                $line = "<span class=\"chunk_info\">$prefix ";
1396                for (my $i = 0; $i < @from_text; ++$i) {
1397                        if ($from->{'href'}[$i]) {
1398                                $line .= $cgi->a({-href=>"$from->{'href'}[$i]#l$from_start[$i]",
1399                                                  -class=>"list"}, $from_text[$i]);
1400                        } else {
1401                                $line .= $from_text[$i];
1402                        }
1403                        $line .= " ";
1404                }
1405                if ($to->{'href'}) {
1406                        $line .= $cgi->a({-href=>"$to->{'href'}#l$to_start",
1407                                          -class=>"list"}, $to_text);
1408                } else {
1409                        $line .= $to_text;
1410                }
1411                $line .= " $prefix</span>" .
1412                         "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
1413                return "<div class=\"diff$diff_class\">$line</div>\n";
1414        }
1415        return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
1416}
1417
1418# Generates undef or something like "_snapshot_" or "snapshot (_tbz2_ _zip_)",
1419# linked.  Pass the hash of the tree/commit to snapshot.
1420sub format_snapshot_links {
1421        my ($hash) = @_;
1422        my @snapshot_fmts = gitweb_check_feature('snapshot');
1423        @snapshot_fmts = filter_snapshot_fmts(@snapshot_fmts);
1424        my $num_fmts = @snapshot_fmts;
1425        if ($num_fmts > 1) {
1426                # A parenthesized list of links bearing format names.
1427                # e.g. "snapshot (_tar.gz_ _zip_)"
1428                return "snapshot (" . join(' ', map
1429                        $cgi->a({
1430                                -href => href(
1431                                        action=>"snapshot",
1432                                        hash=>$hash,
1433                                        snapshot_format=>$_
1434                                )
1435                        }, $known_snapshot_formats{$_}{'display'})
1436                , @snapshot_fmts) . ")";
1437        } elsif ($num_fmts == 1) {
1438                # A single "snapshot" link whose tooltip bears the format name.
1439                # i.e. "_snapshot_"
1440                my ($fmt) = @snapshot_fmts;
1441                return
1442                        $cgi->a({
1443                                -href => href(
1444                                        action=>"snapshot",
1445                                        hash=>$hash,
1446                                        snapshot_format=>$fmt
1447                                ),
1448                                -title => "in format: $known_snapshot_formats{$fmt}{'display'}"
1449                        }, "snapshot");
1450        } else { # $num_fmts == 0
1451                return undef;
1452        }
1453}
1454
1455## ......................................................................
1456## functions returning values to be passed, perhaps after some
1457## transformation, to other functions; e.g. returning arguments to href()
1458
1459# returns hash to be passed to href to generate gitweb URL
1460# in -title key it returns description of link
1461sub get_feed_info {
1462        my $format = shift || 'Atom';
1463        my %res = (action => lc($format));
1464
1465        # feed links are possible only for project views
1466        return unless (defined $project);
1467        # some views should link to OPML, or to generic project feed,
1468        # or don't have specific feed yet (so they should use generic)
1469        return if ($action =~ /^(?:tags|heads|forks|tag|search)$/x);
1470
1471        my $branch;
1472        # branches refs uses 'refs/heads/' prefix (fullname) to differentiate
1473        # from tag links; this also makes possible to detect branch links
1474        if ((defined $hash_base && $hash_base =~ m!^refs/heads/(.*)$!) ||
1475            (defined $hash      && $hash      =~ m!^refs/heads/(.*)$!)) {
1476                $branch = $1;
1477        }
1478        # find log type for feed description (title)
1479        my $type = 'log';
1480        if (defined $file_name) {
1481                $type  = "history of $file_name";
1482                $type .= "/" if ($action eq 'tree');
1483                $type .= " on '$branch'" if (defined $branch);
1484        } else {
1485                $type = "log of $branch" if (defined $branch);
1486        }
1487
1488        $res{-title} = $type;
1489        $res{'hash'} = (defined $branch ? "refs/heads/$branch" : undef);
1490        $res{'file_name'} = $file_name;
1491
1492        return %res;
1493}
1494
1495## ----------------------------------------------------------------------
1496## git utility subroutines, invoking git commands
1497
1498# returns path to the core git executable and the --git-dir parameter as list
1499sub git_cmd {
1500        return $GIT, '--git-dir='.$git_dir;
1501}
1502
1503# quote the given arguments for passing them to the shell
1504# quote_command("command", "arg 1", "arg with ' and ! characters")
1505# => "'command' 'arg 1' 'arg with '\'' and '\!' characters'"
1506# Try to avoid using this function wherever possible.
1507sub quote_command {
1508        return join(' ',
1509                    map( { my $a = $_; $a =~ s/(['!])/'\\$1'/g; "'$a'" } @_ ));
1510}
1511
1512# get HEAD ref of given project as hash
1513sub git_get_head_hash {
1514        my $project = shift;
1515        my $o_git_dir = $git_dir;
1516        my $retval = undef;
1517        $git_dir = "$projectroot/$project";
1518        if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
1519                my $head = <$fd>;
1520                close $fd;
1521                if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
1522                        $retval = $1;
1523                }
1524        }
1525        if (defined $o_git_dir) {
1526                $git_dir = $o_git_dir;
1527        }
1528        return $retval;
1529}
1530
1531# get type of given object
1532sub git_get_type {
1533        my $hash = shift;
1534
1535        open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
1536        my $type = <$fd>;
1537        close $fd or return;
1538        chomp $type;
1539        return $type;
1540}
1541
1542# repository configuration
1543our $config_file = '';
1544our %config;
1545
1546# store multiple values for single key as anonymous array reference
1547# single values stored directly in the hash, not as [ <value> ]
1548sub hash_set_multi {
1549        my ($hash, $key, $value) = @_;
1550
1551        if (!exists $hash->{$key}) {
1552                $hash->{$key} = $value;
1553        } elsif (!ref $hash->{$key}) {
1554                $hash->{$key} = [ $hash->{$key}, $value ];
1555        } else {
1556                push @{$hash->{$key}}, $value;
1557        }
1558}
1559
1560# return hash of git project configuration
1561# optionally limited to some section, e.g. 'gitweb'
1562sub git_parse_project_config {
1563        my $section_regexp = shift;
1564        my %config;
1565
1566        local $/ = "\0";
1567
1568        open my $fh, "-|", git_cmd(), "config", '-z', '-l',
1569                or return;
1570
1571        while (my $keyval = <$fh>) {
1572                chomp $keyval;
1573                my ($key, $value) = split(/\n/, $keyval, 2);
1574
1575                hash_set_multi(\%config, $key, $value)
1576                        if (!defined $section_regexp || $key =~ /^(?:$section_regexp)\./o);
1577        }
1578        close $fh;
1579
1580        return %config;
1581}
1582
1583# convert config value to boolean, 'true' or 'false'
1584# no value, number > 0, 'true' and 'yes' values are true
1585# rest of values are treated as false (never as error)
1586sub config_to_bool {
1587        my $val = shift;
1588
1589        # strip leading and trailing whitespace
1590        $val =~ s/^\s+//;
1591        $val =~ s/\s+$//;
1592
1593        return (!defined $val ||               # section.key
1594                ($val =~ /^\d+$/ && $val) ||   # section.key = 1
1595                ($val =~ /^(?:true|yes)$/i));  # section.key = true
1596}
1597
1598# convert config value to simple decimal number
1599# an optional value suffix of 'k', 'm', or 'g' will cause the value
1600# to be multiplied by 1024, 1048576, or 1073741824
1601sub config_to_int {
1602        my $val = shift;
1603
1604        # strip leading and trailing whitespace
1605        $val =~ s/^\s+//;
1606        $val =~ s/\s+$//;
1607
1608        if (my ($num, $unit) = ($val =~ /^([0-9]*)([kmg])$/i)) {
1609                $unit = lc($unit);
1610                # unknown unit is treated as 1
1611                return $num * ($unit eq 'g' ? 1073741824 :
1612                               $unit eq 'm' ?    1048576 :
1613                               $unit eq 'k' ?       1024 : 1);
1614        }
1615        return $val;
1616}
1617
1618# convert config value to array reference, if needed
1619sub config_to_multi {
1620        my $val = shift;
1621
1622        return ref($val) ? $val : (defined($val) ? [ $val ] : []);
1623}
1624
1625sub git_get_project_config {
1626        my ($key, $type) = @_;
1627
1628        # key sanity check
1629        return unless ($key);
1630        $key =~ s/^gitweb\.//;
1631        return if ($key =~ m/\W/);
1632
1633        # type sanity check
1634        if (defined $type) {
1635                $type =~ s/^--//;
1636                $type = undef
1637                        unless ($type eq 'bool' || $type eq 'int');
1638        }
1639
1640        # get config
1641        if (!defined $config_file ||
1642            $config_file ne "$git_dir/config") {
1643                %config = git_parse_project_config('gitweb');
1644                $config_file = "$git_dir/config";
1645        }
1646
1647        # ensure given type
1648        if (!defined $type) {
1649                return $config{"gitweb.$key"};
1650        } elsif ($type eq 'bool') {
1651                # backward compatibility: 'git config --bool' returns true/false
1652                return config_to_bool($config{"gitweb.$key"}) ? 'true' : 'false';
1653        } elsif ($type eq 'int') {
1654                return config_to_int($config{"gitweb.$key"});
1655        }
1656        return $config{"gitweb.$key"};
1657}
1658
1659# get hash of given path at given ref
1660sub git_get_hash_by_path {
1661        my $base = shift;
1662        my $path = shift || return undef;
1663        my $type = shift;
1664
1665        $path =~ s,/+$,,;
1666
1667        open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
1668                or die_error(undef, "Open git-ls-tree failed");
1669        my $line = <$fd>;
1670        close $fd or return undef;
1671
1672        if (!defined $line) {
1673                # there is no tree or hash given by $path at $base
1674                return undef;
1675        }
1676
1677        #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1678        $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
1679        if (defined $type && $type ne $2) {
1680                # type doesn't match
1681                return undef;
1682        }
1683        return $3;
1684}
1685
1686# get path of entry with given hash at given tree-ish (ref)
1687# used to get 'from' filename for combined diff (merge commit) for renames
1688sub git_get_path_by_hash {
1689        my $base = shift || return;
1690        my $hash = shift || return;
1691
1692        local $/ = "\0";
1693
1694        open my $fd, "-|", git_cmd(), "ls-tree", '-r', '-t', '-z', $base
1695                or return undef;
1696        while (my $line = <$fd>) {
1697                chomp $line;
1698
1699                #'040000 tree 595596a6a9117ddba9fe379b6b012b558bac8423  gitweb'
1700                #'100644 blob e02e90f0429be0d2a69b76571101f20b8f75530f  gitweb/README'
1701                if ($line =~ m/(?:[0-9]+) (?:.+) $hash\t(.+)$/) {
1702                        close $fd;
1703                        return $1;
1704                }
1705        }
1706        close $fd;
1707        return undef;
1708}
1709
1710## ......................................................................
1711## git utility functions, directly accessing git repository
1712
1713sub git_get_project_description {
1714        my $path = shift;
1715
1716        $git_dir = "$projectroot/$path";
1717        open my $fd, "$git_dir/description"
1718                or return git_get_project_config('description');
1719        my $descr = <$fd>;
1720        close $fd;
1721        if (defined $descr) {
1722                chomp $descr;
1723        }
1724        return $descr;
1725}
1726
1727sub git_get_project_url_list {
1728        my $path = shift;
1729
1730        $git_dir = "$projectroot/$path";
1731        open my $fd, "$git_dir/cloneurl"
1732                or return wantarray ?
1733                @{ config_to_multi(git_get_project_config('url')) } :
1734                   config_to_multi(git_get_project_config('url'));
1735        my @git_project_url_list = map { chomp; $_ } <$fd>;
1736        close $fd;
1737
1738        return wantarray ? @git_project_url_list : \@git_project_url_list;
1739}
1740
1741sub git_get_projects_list {
1742        my ($filter) = @_;
1743        my @list;
1744
1745        $filter ||= '';
1746        $filter =~ s/\.git$//;
1747
1748        my ($check_forks) = gitweb_check_feature('forks');
1749
1750        if (-d $projects_list) {
1751                # search in directory
1752                my $dir = $projects_list . ($filter ? "/$filter" : '');
1753                # remove the trailing "/"
1754                $dir =~ s!/+$!!;
1755                my $pfxlen = length("$dir");
1756                my $pfxdepth = ($dir =~ tr!/!!);
1757
1758                File::Find::find({
1759                        follow_fast => 1, # follow symbolic links
1760                        follow_skip => 2, # ignore duplicates
1761                        dangling_symlinks => 0, # ignore dangling symlinks, silently
1762                        wanted => sub {
1763                                # skip project-list toplevel, if we get it.
1764                                return if (m!^[/.]$!);
1765                                # only directories can be git repositories
1766                                return unless (-d $_);
1767                                # don't traverse too deep (Find is super slow on os x)
1768                                if (($File::Find::name =~ tr!/!!) - $pfxdepth > $project_maxdepth) {
1769                                        $File::Find::prune = 1;
1770                                        return;
1771                                }
1772
1773                                my $subdir = substr($File::Find::name, $pfxlen + 1);
1774                                # we check related file in $projectroot
1775                                if ($check_forks and $subdir =~ m#/.#) {
1776                                        $File::Find::prune = 1;
1777                                } elsif (check_export_ok("$projectroot/$filter/$subdir")) {
1778                                        push @list, { path => ($filter ? "$filter/" : '') . $subdir };
1779                                        $File::Find::prune = 1;
1780                                }
1781                        },
1782                }, "$dir");
1783
1784        } elsif (-f $projects_list) {
1785                # read from file(url-encoded):
1786                # 'git%2Fgit.git Linus+Torvalds'
1787                # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1788                # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1789                my %paths;
1790                open my ($fd), $projects_list or return;
1791        PROJECT:
1792                while (my $line = <$fd>) {
1793                        chomp $line;
1794                        my ($path, $owner) = split ' ', $line;
1795                        $path = unescape($path);
1796                        $owner = unescape($owner);
1797                        if (!defined $path) {
1798                                next;
1799                        }
1800                        if ($filter ne '') {
1801                                # looking for forks;
1802                                my $pfx = substr($path, 0, length($filter));
1803                                if ($pfx ne $filter) {
1804                                        next PROJECT;
1805                                }
1806                                my $sfx = substr($path, length($filter));
1807                                if ($sfx !~ /^\/.*\.git$/) {
1808                                        next PROJECT;
1809                                }
1810                        } elsif ($check_forks) {
1811                        PATH:
1812                                foreach my $filter (keys %paths) {
1813                                        # looking for forks;
1814                                        my $pfx = substr($path, 0, length($filter));
1815                                        if ($pfx ne $filter) {
1816                                                next PATH;
1817                                        }
1818                                        my $sfx = substr($path, length($filter));
1819                                        if ($sfx !~ /^\/.*\.git$/) {
1820                                                next PATH;
1821                                        }
1822                                        # is a fork, don't include it in
1823                                        # the list
1824                                        next PROJECT;
1825                                }
1826                        }
1827                        if (check_export_ok("$projectroot/$path")) {
1828                                my $pr = {
1829                                        path => $path,
1830                                        owner => to_utf8($owner),
1831                                };
1832                                push @list, $pr;
1833                                (my $forks_path = $path) =~ s/\.git$//;
1834                                $paths{$forks_path}++;
1835                        }
1836                }
1837                close $fd;
1838        }
1839        return @list;
1840}
1841
1842our $gitweb_project_owner = undef;
1843sub git_get_project_list_from_file {
1844
1845        return if (defined $gitweb_project_owner);
1846
1847        $gitweb_project_owner = {};
1848        # read from file (url-encoded):
1849        # 'git%2Fgit.git Linus+Torvalds'
1850        # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1851        # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1852        if (-f $projects_list) {
1853                open (my $fd , $projects_list);
1854                while (my $line = <$fd>) {
1855                        chomp $line;
1856                        my ($pr, $ow) = split ' ', $line;
1857                        $pr = unescape($pr);
1858                        $ow = unescape($ow);
1859                        $gitweb_project_owner->{$pr} = to_utf8($ow);
1860                }
1861                close $fd;
1862        }
1863}
1864
1865sub git_get_project_owner {
1866        my $project = shift;
1867        my $owner;
1868
1869        return undef unless $project;
1870        $git_dir = "$projectroot/$project";
1871
1872        if (!defined $gitweb_project_owner) {
1873                git_get_project_list_from_file();
1874        }
1875
1876        if (exists $gitweb_project_owner->{$project}) {
1877                $owner = $gitweb_project_owner->{$project};
1878        }
1879        if (!defined $owner){
1880                $owner = git_get_project_config('owner');
1881        }
1882        if (!defined $owner) {
1883                $owner = get_file_owner("$git_dir");
1884        }
1885
1886        return $owner;
1887}
1888
1889sub git_get_last_activity {
1890        my ($path) = @_;
1891        my $fd;
1892
1893        $git_dir = "$projectroot/$path";
1894        open($fd, "-|", git_cmd(), 'for-each-ref',
1895             '--format=%(committer)',
1896             '--sort=-committerdate',
1897             '--count=1',
1898             'refs/heads') or return;
1899        my $most_recent = <$fd>;
1900        close $fd or return;
1901        if (defined $most_recent &&
1902            $most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1903                my $timestamp = $1;
1904                my $age = time - $timestamp;
1905                return ($age, age_string($age));
1906        }
1907        return (undef, undef);
1908}
1909
1910sub git_get_references {
1911        my $type = shift || "";
1912        my %refs;
1913        # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
1914        # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
1915        open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
1916                ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
1917                or return;
1918
1919        while (my $line = <$fd>) {
1920                chomp $line;
1921                if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type/?[^^]+)!) {
1922                        if (defined $refs{$1}) {
1923                                push @{$refs{$1}}, $2;
1924                        } else {
1925                                $refs{$1} = [ $2 ];
1926                        }
1927                }
1928        }
1929        close $fd or return;
1930        return \%refs;
1931}
1932
1933sub git_get_rev_name_tags {
1934        my $hash = shift || return undef;
1935
1936        open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1937                or return;
1938        my $name_rev = <$fd>;
1939        close $fd;
1940
1941        if ($name_rev =~ m|^$hash tags/(.*)$|) {
1942                return $1;
1943        } else {
1944                # catches also '$hash undefined' output
1945                return undef;
1946        }
1947}
1948
1949## ----------------------------------------------------------------------
1950## parse to hash functions
1951
1952sub parse_date {
1953        my $epoch = shift;
1954        my $tz = shift || "-0000";
1955
1956        my %date;
1957        my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1958        my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1959        my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1960        $date{'hour'} = $hour;
1961        $date{'minute'} = $min;
1962        $date{'mday'} = $mday;
1963        $date{'day'} = $days[$wday];
1964        $date{'month'} = $months[$mon];
1965        $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1966                             $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1967        $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1968                             $mday, $months[$mon], $hour ,$min;
1969        $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
1970                             1900+$year, 1+$mon, $mday, $hour ,$min, $sec;
1971
1972        $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1973        my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1974        ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1975        $date{'hour_local'} = $hour;
1976        $date{'minute_local'} = $min;
1977        $date{'tz_local'} = $tz;
1978        $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
1979                                  1900+$year, $mon+1, $mday,
1980                                  $hour, $min, $sec, $tz);
1981        return %date;
1982}
1983
1984sub parse_tag {
1985        my $tag_id = shift;
1986        my %tag;
1987        my @comment;
1988
1989        open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1990        $tag{'id'} = $tag_id;
1991        while (my $line = <$fd>) {
1992                chomp $line;
1993                if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1994                        $tag{'object'} = $1;
1995                } elsif ($line =~ m/^type (.+)$/) {
1996                        $tag{'type'} = $1;
1997                } elsif ($line =~ m/^tag (.+)$/) {
1998                        $tag{'name'} = $1;
1999                } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
2000                        $tag{'author'} = $1;
2001                        $tag{'epoch'} = $2;
2002                        $tag{'tz'} = $3;
2003                } elsif ($line =~ m/--BEGIN/) {
2004                        push @comment, $line;
2005                        last;
2006                } elsif ($line eq "") {
2007                        last;
2008                }
2009        }
2010        push @comment, <$fd>;
2011        $tag{'comment'} = \@comment;
2012        close $fd or return;
2013        if (!defined $tag{'name'}) {
2014                return
2015        };
2016        return %tag
2017}
2018
2019sub parse_commit_text {
2020        my ($commit_text, $withparents) = @_;
2021        my @commit_lines = split '\n', $commit_text;
2022        my %co;
2023
2024        pop @commit_lines; # Remove '\0'
2025
2026        if (! @commit_lines) {
2027                return;
2028        }
2029
2030        my $header = shift @commit_lines;
2031        if ($header !~ m/^[0-9a-fA-F]{40}/) {
2032                return;
2033        }
2034        ($co{'id'}, my @parents) = split ' ', $header;
2035        while (my $line = shift @commit_lines) {
2036                last if $line eq "\n";
2037                if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
2038                        $co{'tree'} = $1;
2039                } elsif ((!defined $withparents) && ($line =~ m/^parent ([0-9a-fA-F]{40})$/)) {
2040                        push @parents, $1;
2041                } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
2042                        $co{'author'} = $1;
2043                        $co{'author_epoch'} = $2;
2044                        $co{'author_tz'} = $3;
2045                        if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
2046                                $co{'author_name'}  = $1;
2047                                $co{'author_email'} = $2;
2048                        } else {
2049                                $co{'author_name'} = $co{'author'};
2050                        }
2051                } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
2052                        $co{'committer'} = $1;
2053                        $co{'committer_epoch'} = $2;
2054                        $co{'committer_tz'} = $3;
2055                        $co{'committer_name'} = $co{'committer'};
2056                        if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
2057                                $co{'committer_name'}  = $1;
2058                                $co{'committer_email'} = $2;
2059                        } else {
2060                                $co{'committer_name'} = $co{'committer'};
2061                        }
2062                }
2063        }
2064        if (!defined $co{'tree'}) {
2065                return;
2066        };
2067        $co{'parents'} = \@parents;
2068        $co{'parent'} = $parents[0];
2069
2070        foreach my $title (@commit_lines) {
2071                $title =~ s/^    //;
2072                if ($title ne "") {
2073                        $co{'title'} = chop_str($title, 80, 5);
2074                        # remove leading stuff of merges to make the interesting part visible
2075                        if (length($title) > 50) {
2076                                $title =~ s/^Automatic //;
2077                                $title =~ s/^merge (of|with) /Merge ... /i;
2078                                if (length($title) > 50) {
2079                                        $title =~ s/(http|rsync):\/\///;
2080                                }
2081                                if (length($title) > 50) {
2082                                        $title =~ s/(master|www|rsync)\.//;
2083                                }
2084                                if (length($title) > 50) {
2085                                        $title =~ s/kernel.org:?//;
2086                                }
2087                                if (length($title) > 50) {
2088                                        $title =~ s/\/pub\/scm//;
2089                                }
2090                        }
2091                        $co{'title_short'} = chop_str($title, 50, 5);
2092                        last;
2093                }
2094        }
2095        if ($co{'title'} eq "") {
2096                $co{'title'} = $co{'title_short'} = '(no commit message)';
2097        }
2098        # remove added spaces
2099        foreach my $line (@commit_lines) {
2100                $line =~ s/^    //;
2101        }
2102        $co{'comment'} = \@commit_lines;
2103
2104        my $age = time - $co{'committer_epoch'};
2105        $co{'age'} = $age;
2106        $co{'age_string'} = age_string($age);
2107        my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
2108        if ($age > 60*60*24*7*2) {
2109                $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
2110                $co{'age_string_age'} = $co{'age_string'};
2111        } else {
2112                $co{'age_string_date'} = $co{'age_string'};
2113                $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
2114        }
2115        return %co;
2116}
2117
2118sub parse_commit {
2119        my ($commit_id) = @_;
2120        my %co;
2121
2122        local $/ = "\0";
2123
2124        open my $fd, "-|", git_cmd(), "rev-list",
2125                "--parents",
2126                "--header",
2127                "--max-count=1",
2128                $commit_id,
2129                "--",
2130                or die_error(undef, "Open git-rev-list failed");
2131        %co = parse_commit_text(<$fd>, 1);
2132        close $fd;
2133
2134        return %co;
2135}
2136
2137sub parse_commits {
2138        my ($commit_id, $maxcount, $skip, $filename, @args) = @_;
2139        my @cos;
2140
2141        $maxcount ||= 1;
2142        $skip ||= 0;
2143
2144        local $/ = "\0";
2145
2146        open my $fd, "-|", git_cmd(), "rev-list",
2147                "--header",
2148                @args,
2149                ("--max-count=" . $maxcount),
2150                ("--skip=" . $skip),
2151                @extra_options,
2152                $commit_id,
2153                "--",
2154                ($filename ? ($filename) : ())
2155                or die_error(undef, "Open git-rev-list failed");
2156        while (my $line = <$fd>) {
2157                my %co = parse_commit_text($line);
2158                push @cos, \%co;
2159        }
2160        close $fd;
2161
2162        return wantarray ? @cos : \@cos;
2163}
2164
2165# parse line of git-diff-tree "raw" output
2166sub parse_difftree_raw_line {
2167        my $line = shift;
2168        my %res;
2169
2170        # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
2171        # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
2172        if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
2173                $res{'from_mode'} = $1;
2174                $res{'to_mode'} = $2;
2175                $res{'from_id'} = $3;
2176                $res{'to_id'} = $4;
2177                $res{'status'} = $5;
2178                $res{'similarity'} = $6;
2179                if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
2180                        ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
2181                } else {
2182                        $res{'from_file'} = $res{'to_file'} = $res{'file'} = unquote($7);
2183                }
2184        }
2185        # '::100755 100755 100755 60e79ca1b01bc8b057abe17ddab484699a7f5fdb 94067cc5f73388f33722d52ae02f44692bc07490 94067cc5f73388f33722d52ae02f44692bc07490 MR git-gui/git-gui.sh'
2186        # combined diff (for merge commit)
2187        elsif ($line =~ s/^(::+)((?:[0-7]{6} )+)((?:[0-9a-fA-F]{40} )+)([a-zA-Z]+)\t(.*)$//) {
2188                $res{'nparents'}  = length($1);
2189                $res{'from_mode'} = [ split(' ', $2) ];
2190                $res{'to_mode'} = pop @{$res{'from_mode'}};
2191                $res{'from_id'} = [ split(' ', $3) ];
2192                $res{'to_id'} = pop @{$res{'from_id'}};
2193                $res{'status'} = [ split('', $4) ];
2194                $res{'to_file'} = unquote($5);
2195        }
2196        # 'c512b523472485aef4fff9e57b229d9d243c967f'
2197        elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
2198                $res{'commit'} = $1;
2199        }
2200
2201        return wantarray ? %res : \%res;
2202}
2203
2204# wrapper: return parsed line of git-diff-tree "raw" output
2205# (the argument might be raw line, or parsed info)
2206sub parsed_difftree_line {
2207        my $line_or_ref = shift;
2208
2209        if (ref($line_or_ref) eq "HASH") {
2210                # pre-parsed (or generated by hand)
2211                return $line_or_ref;
2212        } else {
2213                return parse_difftree_raw_line($line_or_ref);
2214        }
2215}
2216
2217# parse line of git-ls-tree output
2218sub parse_ls_tree_line ($;%) {
2219        my $line = shift;
2220        my %opts = @_;
2221        my %res;
2222
2223        #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
2224        $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
2225
2226        $res{'mode'} = $1;
2227        $res{'type'} = $2;
2228        $res{'hash'} = $3;
2229        if ($opts{'-z'}) {
2230                $res{'name'} = $4;
2231        } else {
2232                $res{'name'} = unquote($4);
2233        }
2234
2235        return wantarray ? %res : \%res;
2236}
2237
2238# generates _two_ hashes, references to which are passed as 2 and 3 argument
2239sub parse_from_to_diffinfo {
2240        my ($diffinfo, $from, $to, @parents) = @_;
2241
2242        if ($diffinfo->{'nparents'}) {
2243                # combined diff
2244                $from->{'file'} = [];
2245                $from->{'href'} = [];
2246                fill_from_file_info($diffinfo, @parents)
2247                        unless exists $diffinfo->{'from_file'};
2248                for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2249                        $from->{'file'}[$i] =
2250                                defined $diffinfo->{'from_file'}[$i] ?
2251                                        $diffinfo->{'from_file'}[$i] :
2252                                        $diffinfo->{'to_file'};
2253                        if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
2254                                $from->{'href'}[$i] = href(action=>"blob",
2255                                                           hash_base=>$parents[$i],
2256                                                           hash=>$diffinfo->{'from_id'}[$i],
2257                                                           file_name=>$from->{'file'}[$i]);
2258                        } else {
2259                                $from->{'href'}[$i] = undef;
2260                        }
2261                }
2262        } else {
2263                # ordinary (not combined) diff
2264                $from->{'file'} = $diffinfo->{'from_file'};
2265                if ($diffinfo->{'status'} ne "A") { # not new (added) file
2266                        $from->{'href'} = href(action=>"blob", hash_base=>$hash_parent,
2267                                               hash=>$diffinfo->{'from_id'},
2268                                               file_name=>$from->{'file'});
2269                } else {
2270                        delete $from->{'href'};
2271                }
2272        }
2273
2274        $to->{'file'} = $diffinfo->{'to_file'};
2275        if (!is_deleted($diffinfo)) { # file exists in result
2276                $to->{'href'} = href(action=>"blob", hash_base=>$hash,
2277                                     hash=>$diffinfo->{'to_id'},
2278                                     file_name=>$to->{'file'});
2279        } else {
2280                delete $to->{'href'};
2281        }
2282}
2283
2284## ......................................................................
2285## parse to array of hashes functions
2286
2287sub git_get_heads_list {
2288        my $limit = shift;
2289        my @headslist;
2290
2291        open my $fd, '-|', git_cmd(), 'for-each-ref',
2292                ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
2293                '--format=%(objectname) %(refname) %(subject)%00%(committer)',
2294                'refs/heads'
2295                or return;
2296        while (my $line = <$fd>) {
2297                my %ref_item;
2298
2299                chomp $line;
2300                my ($refinfo, $committerinfo) = split(/\0/, $line);
2301                my ($hash, $name, $title) = split(' ', $refinfo, 3);
2302                my ($committer, $epoch, $tz) =
2303                        ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
2304                $ref_item{'fullname'}  = $name;
2305                $name =~ s!^refs/heads/!!;
2306
2307                $ref_item{'name'}  = $name;
2308                $ref_item{'id'}    = $hash;
2309                $ref_item{'title'} = $title || '(no commit message)';
2310                $ref_item{'epoch'} = $epoch;
2311                if ($epoch) {
2312                        $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
2313                } else {
2314                        $ref_item{'age'} = "unknown";
2315                }
2316
2317                push @headslist, \%ref_item;
2318        }
2319        close $fd;
2320
2321        return wantarray ? @headslist : \@headslist;
2322}
2323
2324sub git_get_tags_list {
2325        my $limit = shift;
2326        my @tagslist;
2327
2328        open my $fd, '-|', git_cmd(), 'for-each-ref',
2329                ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
2330                '--format=%(objectname) %(objecttype) %(refname) '.
2331                '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
2332                'refs/tags'
2333                or return;
2334        while (my $line = <$fd>) {
2335                my %ref_item;
2336
2337                chomp $line;
2338                my ($refinfo, $creatorinfo) = split(/\0/, $line);
2339                my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
2340                my ($creator, $epoch, $tz) =
2341                        ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
2342                $ref_item{'fullname'} = $name;
2343                $name =~ s!^refs/tags/!!;
2344
2345                $ref_item{'type'} = $type;
2346                $ref_item{'id'} = $id;
2347                $ref_item{'name'} = $name;
2348                if ($type eq "tag") {
2349                        $ref_item{'subject'} = $title;
2350                        $ref_item{'reftype'} = $reftype;
2351                        $ref_item{'refid'}   = $refid;
2352                } else {
2353                        $ref_item{'reftype'} = $type;
2354                        $ref_item{'refid'}   = $id;
2355                }
2356
2357                if ($type eq "tag" || $type eq "commit") {
2358                        $ref_item{'epoch'} = $epoch;
2359                        if ($epoch) {
2360                                $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
2361                        } else {
2362                                $ref_item{'age'} = "unknown";
2363                        }
2364                }
2365
2366                push @tagslist, \%ref_item;
2367        }
2368        close $fd;
2369
2370        return wantarray ? @tagslist : \@tagslist;
2371}
2372
2373## ----------------------------------------------------------------------
2374## filesystem-related functions
2375
2376sub get_file_owner {
2377        my $path = shift;
2378
2379        my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
2380        my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
2381        if (!defined $gcos) {
2382                return undef;
2383        }
2384        my $owner = $gcos;
2385        $owner =~ s/[,;].*$//;
2386        return to_utf8($owner);
2387}
2388
2389## ......................................................................
2390## mimetype related functions
2391
2392sub mimetype_guess_file {
2393        my $filename = shift;
2394        my $mimemap = shift;
2395        -r $mimemap or return undef;
2396
2397        my %mimemap;
2398        open(MIME, $mimemap) or return undef;
2399        while (<MIME>) {
2400                next if m/^#/; # skip comments
2401                my ($mime, $exts) = split(/\t+/);
2402                if (defined $exts) {
2403                        my @exts = split(/\s+/, $exts);
2404                        foreach my $ext (@exts) {
2405                                $mimemap{$ext} = $mime;
2406                        }
2407                }
2408        }
2409        close(MIME);
2410
2411        $filename =~ /\.([^.]*)$/;
2412        return $mimemap{$1};
2413}
2414
2415sub mimetype_guess {
2416        my $filename = shift;
2417        my $mime;
2418        $filename =~ /\./ or return undef;
2419
2420        if ($mimetypes_file) {
2421                my $file = $mimetypes_file;
2422                if ($file !~ m!^/!) { # if it is relative path
2423                        # it is relative to project
2424                        $file = "$projectroot/$project/$file";
2425                }
2426                $mime = mimetype_guess_file($filename, $file);
2427        }
2428        $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
2429        return $mime;
2430}
2431
2432sub blob_mimetype {
2433        my $fd = shift;
2434        my $filename = shift;
2435
2436        if ($filename) {
2437                my $mime = mimetype_guess($filename);
2438                $mime and return $mime;
2439        }
2440
2441        # just in case
2442        return $default_blob_plain_mimetype unless $fd;
2443
2444        if (-T $fd) {
2445                return 'text/plain';
2446        } elsif (! $filename) {
2447                return 'application/octet-stream';
2448        } elsif ($filename =~ m/\.png$/i) {
2449                return 'image/png';
2450        } elsif ($filename =~ m/\.gif$/i) {
2451                return 'image/gif';
2452        } elsif ($filename =~ m/\.jpe?g$/i) {
2453                return 'image/jpeg';
2454        } else {
2455                return 'application/octet-stream';
2456        }
2457}
2458
2459sub blob_contenttype {
2460        my ($fd, $file_name, $type) = @_;
2461
2462        $type ||= blob_mimetype($fd, $file_name);
2463        if ($type eq 'text/plain' && defined $default_text_plain_charset) {
2464                $type .= "; charset=$default_text_plain_charset";
2465        }
2466
2467        return $type;
2468}
2469
2470## ======================================================================
2471## functions printing HTML: header, footer, error page
2472
2473sub git_header_html {
2474        my $status = shift || "200 OK";
2475        my $expires = shift;
2476
2477        my $title = "$site_name";
2478        if (defined $project) {
2479                $title .= " - " . to_utf8($project);
2480                if (defined $action) {
2481                        $title .= "/$action";
2482                        if (defined $file_name) {
2483                                $title .= " - " . esc_path($file_name);
2484                                if ($action eq "tree" && $file_name !~ m|/$|) {
2485                                        $title .= "/";
2486                                }
2487                        }
2488                }
2489        }
2490        my $content_type;
2491        # require explicit support from the UA if we are to send the page as
2492        # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
2493        # we have to do this because MSIE sometimes globs '*/*', pretending to
2494        # support xhtml+xml but choking when it gets what it asked for.
2495        if (defined $cgi->http('HTTP_ACCEPT') &&
2496            $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
2497            $cgi->Accept('application/xhtml+xml') != 0) {
2498                $content_type = 'application/xhtml+xml';
2499        } else {
2500                $content_type = 'text/html';
2501        }
2502        print $cgi->header(-type=>$content_type, -charset => 'utf-8',
2503                           -status=> $status, -expires => $expires);
2504        my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
2505        print <<EOF;
2506<?xml version="1.0" encoding="utf-8"?>
2507<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
2508<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
2509<!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
2510<!-- git core binaries version $git_version -->
2511<head>
2512<meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
2513<meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
2514<meta name="robots" content="index, nofollow"/>
2515<title>$title</title>
2516EOF
2517# print out each stylesheet that exist
2518        if (defined $stylesheet) {
2519#provides backwards capability for those people who define style sheet in a config file
2520                print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
2521        } else {
2522                foreach my $stylesheet (@stylesheets) {
2523                        next unless $stylesheet;
2524                        print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
2525                }
2526        }
2527        if (defined $project) {
2528                my %href_params = get_feed_info();
2529                if (!exists $href_params{'-title'}) {
2530                        $href_params{'-title'} = 'log';
2531                }
2532
2533                foreach my $format qw(RSS Atom) {
2534                        my $type = lc($format);
2535                        my %link_attr = (
2536                                '-rel' => 'alternate',
2537                                '-title' => "$project - $href_params{'-title'} - $format feed",
2538                                '-type' => "application/$type+xml"
2539                        );
2540
2541                        $href_params{'action'} = $type;
2542                        $link_attr{'-href'} = href(%href_params);
2543                        print "<link ".
2544                              "rel=\"$link_attr{'-rel'}\" ".
2545                              "title=\"$link_attr{'-title'}\" ".
2546                              "href=\"$link_attr{'-href'}\" ".
2547                              "type=\"$link_attr{'-type'}\" ".
2548                              "/>\n";
2549
2550                        $href_params{'extra_options'} = '--no-merges';
2551                        $link_attr{'-href'} = href(%href_params);
2552                        $link_attr{'-title'} .= ' (no merges)';
2553                        print "<link ".
2554                              "rel=\"$link_attr{'-rel'}\" ".
2555                              "title=\"$link_attr{'-title'}\" ".
2556                              "href=\"$link_attr{'-href'}\" ".
2557                              "type=\"$link_attr{'-type'}\" ".
2558                              "/>\n";
2559                }
2560
2561        } else {
2562                printf('<link rel="alternate" title="%s projects list" '.
2563                       'href="%s" type="text/plain; charset=utf-8" />'."\n",
2564                       $site_name, href(project=>undef, action=>"project_index"));
2565                printf('<link rel="alternate" title="%s projects feeds" '.
2566                       'href="%s" type="text/x-opml" />'."\n",
2567                       $site_name, href(project=>undef, action=>"opml"));
2568        }
2569        if (defined $favicon) {
2570                print qq(<link rel="shortcut icon" href="$favicon" type="image/png" />\n);
2571        }
2572
2573        print "</head>\n" .
2574              "<body>\n";
2575
2576        if (-f $site_header) {
2577                open (my $fd, $site_header);
2578                print <$fd>;
2579                close $fd;
2580        }
2581
2582        print "<div class=\"page_header\">\n" .
2583              $cgi->a({-href => esc_url($logo_url),
2584                       -title => $logo_label},
2585                      qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
2586        print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
2587        if (defined $project) {
2588                print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
2589                if (defined $action) {
2590                        print " / $action";
2591                }
2592                print "\n";
2593        }
2594        print "</div>\n";
2595
2596        my ($have_search) = gitweb_check_feature('search');
2597        if (defined $project && $have_search) {
2598                if (!defined $searchtext) {
2599                        $searchtext = "";
2600                }
2601                my $search_hash;
2602                if (defined $hash_base) {
2603                        $search_hash = $hash_base;
2604                } elsif (defined $hash) {
2605                        $search_hash = $hash;
2606                } else {
2607                        $search_hash = "HEAD";
2608                }
2609                my $action = $my_uri;
2610                my ($use_pathinfo) = gitweb_check_feature('pathinfo');
2611                if ($use_pathinfo) {
2612                        $action .= "/".esc_url($project);
2613                }
2614                print $cgi->startform(-method => "get", -action => $action) .
2615                      "<div class=\"search\">\n" .
2616                      (!$use_pathinfo &&
2617                      $cgi->input({-name=>"p", -value=>$project, -type=>"hidden"}) . "\n") .
2618                      $cgi->input({-name=>"a", -value=>"search", -type=>"hidden"}) . "\n" .
2619                      $cgi->input({-name=>"h", -value=>$search_hash, -type=>"hidden"}) . "\n" .
2620                      $cgi->popup_menu(-name => 'st', -default => 'commit',
2621                                       -values => ['commit', 'grep', 'author', 'committer', 'pickaxe']) .
2622                      $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
2623                      " search:\n",
2624                      $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
2625                      "<span title=\"Extended regular expression\">" .
2626                      $cgi->checkbox(-name => 'sr', -value => 1, -label => 're',
2627                                     -checked => $search_use_regexp) .
2628                      "</span>" .
2629                      "</div>" .
2630                      $cgi->end_form() . "\n";
2631        }
2632}
2633
2634sub git_footer_html {
2635        my $feed_class = 'rss_logo';
2636
2637        print "<div class=\"page_footer\">\n";
2638        if (defined $project) {
2639                my $descr = git_get_project_description($project);
2640                if (defined $descr) {
2641                        print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
2642                }
2643
2644                my %href_params = get_feed_info();
2645                if (!%href_params) {
2646                        $feed_class .= ' generic';
2647                }
2648                $href_params{'-title'} ||= 'log';
2649
2650                foreach my $format qw(RSS Atom) {
2651                        $href_params{'action'} = lc($format);
2652                        print $cgi->a({-href => href(%href_params),
2653                                      -title => "$href_params{'-title'} $format feed",
2654                                      -class => $feed_class}, $format)."\n";
2655                }
2656
2657        } else {
2658                print $cgi->a({-href => href(project=>undef, action=>"opml"),
2659                              -class => $feed_class}, "OPML") . " ";
2660                print $cgi->a({-href => href(project=>undef, action=>"project_index"),
2661                              -class => $feed_class}, "TXT") . "\n";
2662        }
2663        print "</div>\n"; # class="page_footer"
2664
2665        if (-f $site_footer) {
2666                open (my $fd, $site_footer);
2667                print <$fd>;
2668                close $fd;
2669        }
2670
2671        print "</body>\n" .
2672              "</html>";
2673}
2674
2675sub die_error {
2676        my $status = shift || "403 Forbidden";
2677        my $error = shift || "Malformed query, file missing or permission denied";
2678
2679        git_header_html($status);
2680        print <<EOF;
2681<div class="page_body">
2682<br /><br />
2683$status - $error
2684<br />
2685</div>
2686EOF
2687        git_footer_html();
2688        exit;
2689}
2690
2691## ----------------------------------------------------------------------
2692## functions printing or outputting HTML: navigation
2693
2694sub git_print_page_nav {
2695        my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
2696        $extra = '' if !defined $extra; # pager or formats
2697
2698        my @navs = qw(summary shortlog log commit commitdiff tree);
2699        if ($suppress) {
2700                @navs = grep { $_ ne $suppress } @navs;
2701        }
2702
2703        my %arg = map { $_ => {action=>$_} } @navs;
2704        if (defined $head) {
2705                for (qw(commit commitdiff)) {
2706                        $arg{$_}{'hash'} = $head;
2707                }
2708                if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
2709                        for (qw(shortlog log)) {
2710                                $arg{$_}{'hash'} = $head;
2711                        }
2712                }
2713        }
2714        $arg{'tree'}{'hash'} = $treehead if defined $treehead;
2715        $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
2716
2717        print "<div class=\"page_nav\">\n" .
2718                (join " | ",
2719                 map { $_ eq $current ?
2720                       $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
2721                 } @navs);
2722        print "<br/>\n$extra<br/>\n" .
2723              "</div>\n";
2724}
2725
2726sub format_paging_nav {
2727        my ($action, $hash, $head, $page, $has_next_link) = @_;
2728        my $paging_nav;
2729
2730
2731        if ($hash ne $head || $page) {
2732                $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
2733        } else {
2734                $paging_nav .= "HEAD";
2735        }
2736
2737        if ($page > 0) {
2738                $paging_nav .= " &sdot; " .
2739                        $cgi->a({-href => href(-replay=>1, page=>$page-1),
2740                                 -accesskey => "p", -title => "Alt-p"}, "prev");
2741        } else {
2742                $paging_nav .= " &sdot; prev";
2743        }
2744
2745        if ($has_next_link) {
2746                $paging_nav .= " &sdot; " .
2747                        $cgi->a({-href => href(-replay=>1, page=>$page+1),
2748                                 -accesskey => "n", -title => "Alt-n"}, "next");
2749        } else {
2750                $paging_nav .= " &sdot; next";
2751        }
2752
2753        return $paging_nav;
2754}
2755
2756## ......................................................................
2757## functions printing or outputting HTML: div
2758
2759sub git_print_header_div {
2760        my ($action, $title, $hash, $hash_base) = @_;
2761        my %args = ();
2762
2763        $args{'action'} = $action;
2764        $args{'hash'} = $hash if $hash;
2765        $args{'hash_base'} = $hash_base if $hash_base;
2766
2767        print "<div class=\"header\">\n" .
2768              $cgi->a({-href => href(%args), -class => "title"},
2769              $title ? $title : $action) .
2770              "\n</div>\n";
2771}
2772
2773#sub git_print_authorship (\%) {
2774sub git_print_authorship {
2775        my $co = shift;
2776
2777        my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
2778        print "<div class=\"author_date\">" .
2779              esc_html($co->{'author_name'}) .
2780              " [$ad{'rfc2822'}";
2781        if ($ad{'hour_local'} < 6) {
2782                printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
2783                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2784        } else {
2785                printf(" (%02d:%02d %s)",
2786                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2787        }
2788        print "]</div>\n";
2789}
2790
2791sub git_print_page_path {
2792        my $name = shift;
2793        my $type = shift;
2794        my $hb = shift;
2795
2796
2797        print "<div class=\"page_path\">";
2798        print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
2799                      -title => 'tree root'}, to_utf8("[$project]"));
2800        print " / ";
2801        if (defined $name) {
2802                my @dirname = split '/', $name;
2803                my $basename = pop @dirname;
2804                my $fullname = '';
2805
2806                foreach my $dir (@dirname) {
2807                        $fullname .= ($fullname ? '/' : '') . $dir;
2808                        print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
2809                                                     hash_base=>$hb),
2810                                      -title => $fullname}, esc_path($dir));
2811                        print " / ";
2812                }
2813                if (defined $type && $type eq 'blob') {
2814                        print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
2815                                                     hash_base=>$hb),
2816                                      -title => $name}, esc_path($basename));
2817                } elsif (defined $type && $type eq 'tree') {
2818                        print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
2819                                                     hash_base=>$hb),
2820                                      -title => $name}, esc_path($basename));
2821                        print " / ";
2822                } else {
2823                        print esc_path($basename);
2824                }
2825        }
2826        print "<br/></div>\n";
2827}
2828
2829# sub git_print_log (\@;%) {
2830sub git_print_log ($;%) {
2831        my $log = shift;
2832        my %opts = @_;
2833
2834        if ($opts{'-remove_title'}) {
2835                # remove title, i.e. first line of log
2836                shift @$log;
2837        }
2838        # remove leading empty lines
2839        while (defined $log->[0] && $log->[0] eq "") {
2840                shift @$log;
2841        }
2842
2843        # print log
2844        my $signoff = 0;
2845        my $empty = 0;
2846        foreach my $line (@$log) {
2847                if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2848                        $signoff = 1;
2849                        $empty = 0;
2850                        if (! $opts{'-remove_signoff'}) {
2851                                print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
2852                                next;
2853                        } else {
2854                                # remove signoff lines
2855                                next;
2856                        }
2857                } else {
2858                        $signoff = 0;
2859                }
2860
2861                # print only one empty line
2862                # do not print empty line after signoff
2863                if ($line eq "") {
2864                        next if ($empty || $signoff);
2865                        $empty = 1;
2866                } else {
2867                        $empty = 0;
2868                }
2869
2870                print format_log_line_html($line) . "<br/>\n";
2871        }
2872
2873        if ($opts{'-final_empty_line'}) {
2874                # end with single empty line
2875                print "<br/>\n" unless $empty;
2876        }
2877}
2878
2879# return link target (what link points to)
2880sub git_get_link_target {
2881        my $hash = shift;
2882        my $link_target;
2883
2884        # read link
2885        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2886                or return;
2887        {
2888                local $/;
2889                $link_target = <$fd>;
2890        }
2891        close $fd
2892                or return;
2893
2894        return $link_target;
2895}
2896
2897# given link target, and the directory (basedir) the link is in,
2898# return target of link relative to top directory (top tree);
2899# return undef if it is not possible (including absolute links).
2900sub normalize_link_target {
2901        my ($link_target, $basedir, $hash_base) = @_;
2902
2903        # we can normalize symlink target only if $hash_base is provided
2904        return unless $hash_base;
2905
2906        # absolute symlinks (beginning with '/') cannot be normalized
2907        return if (substr($link_target, 0, 1) eq '/');
2908
2909        # normalize link target to path from top (root) tree (dir)
2910        my $path;
2911        if ($basedir) {
2912                $path = $basedir . '/' . $link_target;
2913        } else {
2914                # we are in top (root) tree (dir)
2915                $path = $link_target;
2916        }
2917
2918        # remove //, /./, and /../
2919        my @path_parts;
2920        foreach my $part (split('/', $path)) {
2921                # discard '.' and ''
2922                next if (!$part || $part eq '.');
2923                # handle '..'
2924                if ($part eq '..') {
2925                        if (@path_parts) {
2926                                pop @path_parts;
2927                        } else {
2928                                # link leads outside repository (outside top dir)
2929                                return;
2930                        }
2931                } else {
2932                        push @path_parts, $part;
2933                }
2934        }
2935        $path = join('/', @path_parts);
2936
2937        return $path;
2938}
2939
2940# print tree entry (row of git_tree), but without encompassing <tr> element
2941sub git_print_tree_entry {
2942        my ($t, $basedir, $hash_base, $have_blame) = @_;
2943
2944        my %base_key = ();
2945        $base_key{'hash_base'} = $hash_base if defined $hash_base;
2946
2947        # The format of a table row is: mode list link.  Where mode is
2948        # the mode of the entry, list is the name of the entry, an href,
2949        # and link is the action links of the entry.
2950
2951        print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
2952        if ($t->{'type'} eq "blob") {
2953                print "<td class=\"list\">" .
2954                        $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2955                                               file_name=>"$basedir$t->{'name'}", %base_key),
2956                                -class => "list"}, esc_path($t->{'name'}));
2957                if (S_ISLNK(oct $t->{'mode'})) {
2958                        my $link_target = git_get_link_target($t->{'hash'});
2959                        if ($link_target) {
2960                                my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
2961                                if (defined $norm_target) {
2962                                        print " -> " .
2963                                              $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
2964                                                                     file_name=>$norm_target),
2965                                                       -title => $norm_target}, esc_path($link_target));
2966                                } else {
2967                                        print " -> " . esc_path($link_target);
2968                                }
2969                        }
2970                }
2971                print "</td>\n";
2972                print "<td class=\"link\">";
2973                print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2974                                             file_name=>"$basedir$t->{'name'}", %base_key)},
2975                              "blob");
2976                if ($have_blame) {
2977                        print " | " .
2978                              $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
2979                                                     file_name=>"$basedir$t->{'name'}", %base_key)},
2980                                      "blame");
2981                }
2982                if (defined $hash_base) {
2983                        print " | " .
2984                              $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2985                                                     hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
2986                                      "history");
2987                }
2988                print " | " .
2989                        $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
2990                                               file_name=>"$basedir$t->{'name'}")},
2991                                "raw");
2992                print "</td>\n";
2993
2994        } elsif ($t->{'type'} eq "tree") {
2995                print "<td class=\"list\">";
2996                print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2997                                             file_name=>"$basedir$t->{'name'}", %base_key)},
2998                              esc_path($t->{'name'}));
2999                print "</td>\n";
3000                print "<td class=\"link\">";
3001                print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
3002                                             file_name=>"$basedir$t->{'name'}", %base_key)},
3003                              "tree");
3004                if (defined $hash_base) {
3005                        print " | " .
3006                              $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3007                                                     file_name=>"$basedir$t->{'name'}")},
3008                                      "history");
3009                }
3010                print "</td>\n";
3011        } else {
3012                # unknown object: we can only present history for it
3013                # (this includes 'commit' object, i.e. submodule support)
3014                print "<td class=\"list\">" .
3015                      esc_path($t->{'name'}) .
3016                      "</td>\n";
3017                print "<td class=\"link\">";
3018                if (defined $hash_base) {
3019                        print $cgi->a({-href => href(action=>"history",
3020                                                     hash_base=>$hash_base,
3021                                                     file_name=>"$basedir$t->{'name'}")},
3022                                      "history");
3023                }
3024                print "</td>\n";
3025        }
3026}
3027
3028## ......................................................................
3029## functions printing large fragments of HTML
3030
3031# get pre-image filenames for merge (combined) diff
3032sub fill_from_file_info {
3033        my ($diff, @parents) = @_;
3034
3035        $diff->{'from_file'} = [ ];
3036        $diff->{'from_file'}[$diff->{'nparents'} - 1] = undef;
3037        for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
3038                if ($diff->{'status'}[$i] eq 'R' ||
3039                    $diff->{'status'}[$i] eq 'C') {
3040                        $diff->{'from_file'}[$i] =
3041                                git_get_path_by_hash($parents[$i], $diff->{'from_id'}[$i]);
3042                }
3043        }
3044
3045        return $diff;
3046}
3047
3048# is current raw difftree line of file deletion
3049sub is_deleted {
3050        my $diffinfo = shift;
3051
3052        return $diffinfo->{'to_id'} eq ('0' x 40);
3053}
3054
3055# does patch correspond to [previous] difftree raw line
3056# $diffinfo  - hashref of parsed raw diff format
3057# $patchinfo - hashref of parsed patch diff format
3058#              (the same keys as in $diffinfo)
3059sub is_patch_split {
3060        my ($diffinfo, $patchinfo) = @_;
3061
3062        return defined $diffinfo && defined $patchinfo
3063                && $diffinfo->{'to_file'} eq $patchinfo->{'to_file'};
3064}
3065
3066
3067sub git_difftree_body {
3068        my ($difftree, $hash, @parents) = @_;
3069        my ($parent) = $parents[0];
3070        my ($have_blame) = gitweb_check_feature('blame');
3071        print "<div class=\"list_head\">\n";
3072        if ($#{$difftree} > 10) {
3073                print(($#{$difftree} + 1) . " files changed:\n");
3074        }
3075        print "</div>\n";
3076
3077        print "<table class=\"" .
3078              (@parents > 1 ? "combined " : "") .
3079              "diff_tree\">\n";
3080
3081        # header only for combined diff in 'commitdiff' view
3082        my $has_header = @$difftree && @parents > 1 && $action eq 'commitdiff';
3083        if ($has_header) {
3084                # table header
3085                print "<thead><tr>\n" .
3086                       "<th></th><th></th>\n"; # filename, patchN link
3087                for (my $i = 0; $i < @parents; $i++) {
3088                        my $par = $parents[$i];
3089                        print "<th>" .
3090                              $cgi->a({-href => href(action=>"commitdiff",
3091                                                     hash=>$hash, hash_parent=>$par),
3092                                       -title => 'commitdiff to parent number ' .
3093                                                  ($i+1) . ': ' . substr($par,0,7)},
3094                                      $i+1) .
3095                              "&nbsp;</th>\n";
3096                }
3097                print "</tr></thead>\n<tbody>\n";
3098        }
3099
3100        my $alternate = 1;
3101        my $patchno = 0;
3102        foreach my $line (@{$difftree}) {
3103                my $diff = parsed_difftree_line($line);
3104
3105                if ($alternate) {
3106                        print "<tr class=\"dark\">\n";
3107                } else {
3108                        print "<tr class=\"light\">\n";
3109                }
3110                $alternate ^= 1;
3111
3112                if (exists $diff->{'nparents'}) { # combined diff
3113
3114                        fill_from_file_info($diff, @parents)
3115                                unless exists $diff->{'from_file'};
3116
3117                        if (!is_deleted($diff)) {
3118                                # file exists in the result (child) commit
3119                                print "<td>" .
3120                                      $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3121                                                             file_name=>$diff->{'to_file'},
3122                                                             hash_base=>$hash),
3123                                              -class => "list"}, esc_path($diff->{'to_file'})) .
3124                                      "</td>\n";
3125                        } else {
3126                                print "<td>" .
3127                                      esc_path($diff->{'to_file'}) .
3128                                      "</td>\n";
3129                        }
3130
3131                        if ($action eq 'commitdiff') {
3132                                # link to patch
3133                                $patchno++;
3134                                print "<td class=\"link\">" .
3135                                      $cgi->a({-href => "#patch$patchno"}, "patch") .
3136                                      " | " .
3137                                      "</td>\n";
3138                        }
3139
3140                        my $has_history = 0;
3141                        my $not_deleted = 0;
3142                        for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
3143                                my $hash_parent = $parents[$i];
3144                                my $from_hash = $diff->{'from_id'}[$i];
3145                                my $from_path = $diff->{'from_file'}[$i];
3146                                my $status = $diff->{'status'}[$i];
3147
3148                                $has_history ||= ($status ne 'A');
3149                                $not_deleted ||= ($status ne 'D');
3150
3151                                if ($status eq 'A') {
3152                                        print "<td  class=\"link\" align=\"right\"> | </td>\n";
3153                                } elsif ($status eq 'D') {
3154                                        print "<td class=\"link\">" .
3155                                              $cgi->a({-href => href(action=>"blob",
3156                                                                     hash_base=>$hash,
3157                                                                     hash=>$from_hash,
3158                                                                     file_name=>$from_path)},
3159                                                      "blob" . ($i+1)) .
3160                                              " | </td>\n";
3161                                } else {
3162                                        if ($diff->{'to_id'} eq $from_hash) {
3163                                                print "<td class=\"link nochange\">";
3164                                        } else {
3165                                                print "<td class=\"link\">";
3166                                        }
3167                                        print $cgi->a({-href => href(action=>"blobdiff",
3168                                                                     hash=>$diff->{'to_id'},
3169                                                                     hash_parent=>$from_hash,
3170                                                                     hash_base=>$hash,
3171                                                                     hash_parent_base=>$hash_parent,
3172                                                                     file_name=>$diff->{'to_file'},
3173                                                                     file_parent=>$from_path)},
3174                                                      "diff" . ($i+1)) .
3175                                              " | </td>\n";
3176                                }
3177                        }
3178
3179                        print "<td class=\"link\">";
3180                        if ($not_deleted) {
3181                                print $cgi->a({-href => href(action=>"blob",
3182                                                             hash=>$diff->{'to_id'},
3183                                                             file_name=>$diff->{'to_file'},
3184                                                             hash_base=>$hash)},
3185                                              "blob");
3186                                print " | " if ($has_history);
3187                        }
3188                        if ($has_history) {
3189                                print $cgi->a({-href => href(action=>"history",
3190                                                             file_name=>$diff->{'to_file'},
3191                                                             hash_base=>$hash)},
3192                                              "history");
3193                        }
3194                        print "</td>\n";
3195
3196                        print "</tr>\n";
3197                        next; # instead of 'else' clause, to avoid extra indent
3198                }
3199                # else ordinary diff
3200
3201                my ($to_mode_oct, $to_mode_str, $to_file_type);
3202                my ($from_mode_oct, $from_mode_str, $from_file_type);
3203                if ($diff->{'to_mode'} ne ('0' x 6)) {
3204                        $to_mode_oct = oct $diff->{'to_mode'};
3205                        if (S_ISREG($to_mode_oct)) { # only for regular file
3206                                $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
3207                        }
3208                        $to_file_type = file_type($diff->{'to_mode'});
3209                }
3210                if ($diff->{'from_mode'} ne ('0' x 6)) {
3211                        $from_mode_oct = oct $diff->{'from_mode'};
3212                        if (S_ISREG($to_mode_oct)) { # only for regular file
3213                                $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
3214                        }
3215                        $from_file_type = file_type($diff->{'from_mode'});
3216                }
3217
3218                if ($diff->{'status'} eq "A") { # created
3219                        my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
3220                        $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
3221                        $mode_chng   .= "]</span>";
3222                        print "<td>";
3223                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3224                                                     hash_base=>$hash, file_name=>$diff->{'file'}),
3225                                      -class => "list"}, esc_path($diff->{'file'}));
3226                        print "</td>\n";
3227                        print "<td>$mode_chng</td>\n";
3228                        print "<td class=\"link\">";
3229                        if ($action eq 'commitdiff') {
3230                                # link to patch
3231                                $patchno++;
3232                                print $cgi->a({-href => "#patch$patchno"}, "patch");
3233                                print " | ";
3234                        }
3235                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3236                                                     hash_base=>$hash, file_name=>$diff->{'file'})},
3237                                      "blob");
3238                        print "</td>\n";
3239
3240                } elsif ($diff->{'status'} eq "D") { # deleted
3241                        my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
3242                        print "<td>";
3243                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
3244                                                     hash_base=>$parent, file_name=>$diff->{'file'}),
3245                                       -class => "list"}, esc_path($diff->{'file'}));
3246                        print "</td>\n";
3247                        print "<td>$mode_chng</td>\n";
3248                        print "<td class=\"link\">";
3249                        if ($action eq 'commitdiff') {
3250                                # link to patch
3251                                $patchno++;
3252                                print $cgi->a({-href => "#patch$patchno"}, "patch");
3253                                print " | ";
3254                        }
3255                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
3256                                                     hash_base=>$parent, file_name=>$diff->{'file'})},
3257                                      "blob") . " | ";
3258                        if ($have_blame) {
3259                                print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
3260                                                             file_name=>$diff->{'file'})},
3261                                              "blame") . " | ";
3262                        }
3263                        print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
3264                                                     file_name=>$diff->{'file'})},
3265                                      "history");
3266                        print "</td>\n";
3267
3268                } elsif ($diff->{'status'} eq "M" || $diff->{'status'} eq "T") { # modified, or type changed
3269                        my $mode_chnge = "";
3270                        if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
3271                                $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
3272                                if ($from_file_type ne $to_file_type) {
3273                                        $mode_chnge .= " from $from_file_type to $to_file_type";
3274                                }
3275                                if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
3276                                        if ($from_mode_str && $to_mode_str) {
3277                                                $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
3278                                        } elsif ($to_mode_str) {
3279                                                $mode_chnge .= " mode: $to_mode_str";
3280                                        }
3281                                }
3282                                $mode_chnge .= "]</span>\n";
3283                        }
3284                        print "<td>";
3285                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3286                                                     hash_base=>$hash, file_name=>$diff->{'file'}),
3287                                      -class => "list"}, esc_path($diff->{'file'}));
3288                        print "</td>\n";
3289                        print "<td>$mode_chnge</td>\n";
3290                        print "<td class=\"link\">";
3291                        if ($action eq 'commitdiff') {
3292                                # link to patch
3293                                $patchno++;
3294                                print $cgi->a({-href => "#patch$patchno"}, "patch") .
3295                                      " | ";
3296                        } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
3297                                # "commit" view and modified file (not onlu mode changed)
3298                                print $cgi->a({-href => href(action=>"blobdiff",
3299                                                             hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
3300                                                             hash_base=>$hash, hash_parent_base=>$parent,
3301                                                             file_name=>$diff->{'file'})},
3302                                              "diff") .
3303                                      " | ";
3304                        }
3305                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3306                                                     hash_base=>$hash, file_name=>$diff->{'file'})},
3307                                       "blob") . " | ";
3308                        if ($have_blame) {
3309                                print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
3310                                                             file_name=>$diff->{'file'})},
3311                                              "blame") . " | ";
3312                        }
3313                        print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
3314                                                     file_name=>$diff->{'file'})},
3315                                      "history");
3316                        print "</td>\n";
3317
3318                } elsif ($diff->{'status'} eq "R" || $diff->{'status'} eq "C") { # renamed or copied
3319                        my %status_name = ('R' => 'moved', 'C' => 'copied');
3320                        my $nstatus = $status_name{$diff->{'status'}};
3321                        my $mode_chng = "";
3322                        if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
3323                                # mode also for directories, so we cannot use $to_mode_str
3324                                $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
3325                        }
3326                        print "<td>" .
3327                              $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
3328                                                     hash=>$diff->{'to_id'}, file_name=>$diff->{'to_file'}),
3329                                      -class => "list"}, esc_path($diff->{'to_file'})) . "</td>\n" .
3330                              "<td><span class=\"file_status $nstatus\">[$nstatus from " .
3331                              $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
3332                                                     hash=>$diff->{'from_id'}, file_name=>$diff->{'from_file'}),
3333                                      -class => "list"}, esc_path($diff->{'from_file'})) .
3334                              " with " . (int $diff->{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
3335                              "<td class=\"link\">";
3336                        if ($action eq 'commitdiff') {
3337                                # link to patch
3338                                $patchno++;
3339                                print $cgi->a({-href => "#patch$patchno"}, "patch") .
3340                                      " | ";
3341                        } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
3342                                # "commit" view and modified file (not only pure rename or copy)
3343                                print $cgi->a({-href => href(action=>"blobdiff",
3344                                                             hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
3345                                                             hash_base=>$hash, hash_parent_base=>$parent,
3346                                                             file_name=>$diff->{'to_file'}, file_parent=>$diff->{'from_file'})},
3347                                              "diff") .
3348                                      " | ";
3349                        }
3350                        print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3351                                                     hash_base=>$parent, file_name=>$diff->{'to_file'})},
3352                                      "blob") . " | ";
3353                        if ($have_blame) {
3354                                print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
3355                                                             file_name=>$diff->{'to_file'})},
3356                                              "blame") . " | ";
3357                        }
3358                        print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
3359                                                    file_name=>$diff->{'to_file'})},
3360                                      "history");
3361                        print "</td>\n";
3362
3363                } # we should not encounter Unmerged (U) or Unknown (X) status
3364                print "</tr>\n";
3365        }
3366        print "</tbody>" if $has_header;
3367        print "</table>\n";
3368}
3369
3370sub git_patchset_body {
3371        my ($fd, $difftree, $hash, @hash_parents) = @_;
3372        my ($hash_parent) = $hash_parents[0];
3373
3374        my $is_combined = (@hash_parents > 1);
3375        my $patch_idx = 0;
3376        my $patch_number = 0;
3377        my $patch_line;
3378        my $diffinfo;
3379        my $to_name;
3380        my (%from, %to);
3381
3382        print "<div class=\"patchset\">\n";
3383
3384        # skip to first patch
3385        while ($patch_line = <$fd>) {
3386                chomp $patch_line;
3387
3388                last if ($patch_line =~ m/^diff /);
3389        }
3390
3391 PATCH:
3392        while ($patch_line) {
3393
3394                # parse "git diff" header line
3395                if ($patch_line =~ m/^diff --git (\"(?:[^\\\"]*(?:\\.[^\\\"]*)*)\"|[^ "]*) (.*)$/) {
3396                        # $1 is from_name, which we do not use
3397                        $to_name = unquote($2);
3398                        $to_name =~ s!^b/!!;
3399                } elsif ($patch_line =~ m/^diff --(cc|combined) ("?.*"?)$/) {
3400                        # $1 is 'cc' or 'combined', which we do not use
3401                        $to_name = unquote($2);
3402                } else {
3403                        $to_name = undef;
3404                }
3405
3406                # check if current patch belong to current raw line
3407                # and parse raw git-diff line if needed
3408                if (is_patch_split($diffinfo, { 'to_file' => $to_name })) {
3409                        # this is continuation of a split patch
3410                        print "<div class=\"patch cont\">\n";
3411                } else {
3412                        # advance raw git-diff output if needed
3413                        $patch_idx++ if defined $diffinfo;
3414
3415                        # read and prepare patch information
3416                        $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
3417
3418                        # compact combined diff output can have some patches skipped
3419                        # find which patch (using pathname of result) we are at now;
3420                        if ($is_combined) {
3421                                while ($to_name ne $diffinfo->{'to_file'}) {
3422                                        print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
3423                                              format_diff_cc_simplified($diffinfo, @hash_parents) .
3424                                              "</div>\n";  # class="patch"
3425
3426                                        $patch_idx++;
3427                                        $patch_number++;
3428
3429                                        last if $patch_idx > $#$difftree;
3430                                        $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
3431                                }
3432                        }
3433
3434                        # modifies %from, %to hashes
3435                        parse_from_to_diffinfo($diffinfo, \%from, \%to, @hash_parents);
3436
3437                        # this is first patch for raw difftree line with $patch_idx index
3438                        # we index @$difftree array from 0, but number patches from 1
3439                        print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
3440                }
3441
3442                # git diff header
3443                #assert($patch_line =~ m/^diff /) if DEBUG;
3444                #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
3445                $patch_number++;
3446                # print "git diff" header
3447                print format_git_diff_header_line($patch_line, $diffinfo,
3448                                                  \%from, \%to);
3449
3450                # print extended diff header
3451                print "<div class=\"diff extended_header\">\n";
3452        EXTENDED_HEADER:
3453                while ($patch_line = <$fd>) {
3454                        chomp $patch_line;
3455
3456                        last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
3457
3458                        print format_extended_diff_header_line($patch_line, $diffinfo,
3459                                                               \%from, \%to);
3460                }
3461                print "</div>\n"; # class="diff extended_header"
3462
3463                # from-file/to-file diff header
3464                if (! $patch_line) {
3465                        print "</div>\n"; # class="patch"
3466                        last PATCH;
3467                }
3468                next PATCH if ($patch_line =~ m/^diff /);
3469                #assert($patch_line =~ m/^---/) if DEBUG;
3470
3471                my $last_patch_line = $patch_line;
3472                $patch_line = <$fd>;
3473                chomp $patch_line;
3474                #assert($patch_line =~ m/^\+\+\+/) if DEBUG;
3475
3476                print format_diff_from_to_header($last_patch_line, $patch_line,
3477                                                 $diffinfo, \%from, \%to,
3478                                                 @hash_parents);
3479
3480                # the patch itself
3481        LINE:
3482                while ($patch_line = <$fd>) {
3483                        chomp $patch_line;
3484
3485                        next PATCH if ($patch_line =~ m/^diff /);
3486
3487                        print format_diff_line($patch_line, \%from, \%to);
3488                }
3489
3490        } continue {
3491                print "</div>\n"; # class="patch"
3492        }
3493
3494        # for compact combined (--cc) format, with chunk and patch simpliciaction
3495        # patchset might be empty, but there might be unprocessed raw lines
3496        for (++$patch_idx if $patch_number > 0;
3497             $patch_idx < @$difftree;
3498             ++$patch_idx) {
3499                # read and prepare patch information
3500                $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
3501
3502                # generate anchor for "patch" links in difftree / whatchanged part
3503                print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
3504                      format_diff_cc_simplified($diffinfo, @hash_parents) .
3505                      "</div>\n";  # class="patch"
3506
3507                $patch_number++;
3508        }
3509
3510        if ($patch_number == 0) {
3511                if (@hash_parents > 1) {
3512                        print "<div class=\"diff nodifferences\">Trivial merge</div>\n";
3513                } else {
3514                        print "<div class=\"diff nodifferences\">No differences found</div>\n";
3515                }
3516        }
3517
3518        print "</div>\n"; # class="patchset"
3519}
3520
3521# . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3522
3523sub git_project_list_body {
3524        my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
3525
3526        my ($check_forks) = gitweb_check_feature('forks');
3527
3528        my @projects;
3529        foreach my $pr (@$projlist) {
3530                my (@aa) = git_get_last_activity($pr->{'path'});
3531                unless (@aa) {
3532                        next;
3533                }
3534                ($pr->{'age'}, $pr->{'age_string'}) = @aa;
3535                if (!defined $pr->{'descr'}) {
3536                        my $descr = git_get_project_description($pr->{'path'}) || "";
3537                        $pr->{'descr_long'} = to_utf8($descr);
3538                        $pr->{'descr'} = chop_str($descr, $projects_list_description_width, 5);
3539                }
3540                if (!defined $pr->{'owner'}) {
3541                        $pr->{'owner'} = git_get_project_owner("$pr->{'path'}") || "";
3542                }
3543                if ($check_forks) {
3544                        my $pname = $pr->{'path'};
3545                        if (($pname =~ s/\.git$//) &&
3546                            ($pname !~ /\/$/) &&
3547                            (-d "$projectroot/$pname")) {
3548                                $pr->{'forks'} = "-d $projectroot/$pname";
3549                        }
3550                        else {
3551                                $pr->{'forks'} = 0;
3552                        }
3553                }
3554                push @projects, $pr;
3555        }
3556
3557        $order ||= $default_projects_order;
3558        $from = 0 unless defined $from;
3559        $to = $#projects if (!defined $to || $#projects < $to);
3560
3561        print "<table class=\"project_list\">\n";
3562        unless ($no_header) {
3563                print "<tr>\n";
3564                if ($check_forks) {
3565                        print "<th></th>\n";
3566                }
3567                if ($order eq "project") {
3568                        @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
3569                        print "<th>Project</th>\n";
3570                } else {
3571                        print "<th>" .
3572                              $cgi->a({-href => href(project=>undef, order=>'project'),
3573                                       -class => "header"}, "Project") .
3574                              "</th>\n";
3575                }
3576                if ($order eq "descr") {
3577                        @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
3578                        print "<th>Description</th>\n";
3579                } else {
3580                        print "<th>" .
3581                              $cgi->a({-href => href(project=>undef, order=>'descr'),
3582                                       -class => "header"}, "Description") .
3583                              "</th>\n";
3584                }
3585                if ($order eq "owner") {
3586                        @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
3587                        print "<th>Owner</th>\n";
3588                } else {
3589                        print "<th>" .
3590                              $cgi->a({-href => href(project=>undef, order=>'owner'),
3591                                       -class => "header"}, "Owner") .
3592                              "</th>\n";
3593                }
3594                if ($order eq "age") {
3595                        @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
3596                        print "<th>Last Change</th>\n";
3597                } else {
3598                        print "<th>" .
3599                              $cgi->a({-href => href(project=>undef, order=>'age'),
3600                                       -class => "header"}, "Last Change") .
3601                              "</th>\n";
3602                }
3603                print "<th></th>\n" .
3604                      "</tr>\n";
3605        }
3606        my $alternate = 1;
3607        for (my $i = $from; $i <= $to; $i++) {
3608                my $pr = $projects[$i];
3609                if ($alternate) {
3610                        print "<tr class=\"dark\">\n";
3611                } else {
3612                        print "<tr class=\"light\">\n";
3613                }
3614                $alternate ^= 1;
3615                if ($check_forks) {
3616                        print "<td>";
3617                        if ($pr->{'forks'}) {
3618                                print "<!-- $pr->{'forks'} -->\n";
3619                                print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
3620                        }
3621                        print "</td>\n";
3622                }
3623                print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3624                                        -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
3625                      "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3626                                        -class => "list", -title => $pr->{'descr_long'}},
3627                                        esc_html($pr->{'descr'})) . "</td>\n" .
3628                      "<td><i>" . chop_and_escape_str($pr->{'owner'}, 15) . "</i></td>\n";
3629                print "<td class=\"". age_class($pr->{'age'}) . "\">" .
3630                      (defined $pr->{'age_string'} ? $pr->{'age_string'} : "No commits") . "</td>\n" .
3631                      "<td class=\"link\">" .
3632                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
3633                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
3634                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
3635                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
3636                      ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
3637                      "</td>\n" .
3638                      "</tr>\n";
3639        }
3640        if (defined $extra) {
3641                print "<tr>\n";
3642                if ($check_forks) {
3643                        print "<td></td>\n";
3644                }
3645                print "<td colspan=\"5\">$extra</td>\n" .
3646                      "</tr>\n";
3647        }
3648        print "</table>\n";
3649}
3650
3651sub git_shortlog_body {
3652        # uses global variable $project
3653        my ($commitlist, $from, $to, $refs, $extra) = @_;
3654
3655        $from = 0 unless defined $from;
3656        $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3657
3658        print "<table class=\"shortlog\">\n";
3659        my $alternate = 1;
3660        for (my $i = $from; $i <= $to; $i++) {
3661                my %co = %{$commitlist->[$i]};
3662                my $commit = $co{'id'};
3663                my $ref = format_ref_marker($refs, $commit);
3664                if ($alternate) {
3665                        print "<tr class=\"dark\">\n";
3666                } else {
3667                        print "<tr class=\"light\">\n";
3668                }
3669                $alternate ^= 1;
3670                my $author = chop_and_escape_str($co{'author_name'}, 10);
3671                # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
3672                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3673                      "<td><i>" . $author . "</i></td>\n" .
3674                      "<td>";
3675                print format_subject_html($co{'title'}, $co{'title_short'},
3676                                          href(action=>"commit", hash=>$commit), $ref);
3677                print "</td>\n" .
3678                      "<td class=\"link\">" .
3679                      $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
3680                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
3681                      $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
3682                my $snapshot_links = format_snapshot_links($commit);
3683                if (defined $snapshot_links) {
3684                        print " | " . $snapshot_links;
3685                }
3686                print "</td>\n" .
3687                      "</tr>\n";
3688        }
3689        if (defined $extra) {
3690                print "<tr>\n" .
3691                      "<td colspan=\"4\">$extra</td>\n" .
3692                      "</tr>\n";
3693        }
3694        print "</table>\n";
3695}
3696
3697sub git_history_body {
3698        # Warning: assumes constant type (blob or tree) during history
3699        my ($commitlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
3700
3701        $from = 0 unless defined $from;
3702        $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
3703
3704        print "<table class=\"history\">\n";
3705        my $alternate = 1;
3706        for (my $i = $from; $i <= $to; $i++) {
3707                my %co = %{$commitlist->[$i]};
3708                if (!%co) {
3709                        next;
3710                }
3711                my $commit = $co{'id'};
3712
3713                my $ref = format_ref_marker($refs, $commit);
3714
3715                if ($alternate) {
3716                        print "<tr class=\"dark\">\n";
3717                } else {
3718                        print "<tr class=\"light\">\n";
3719                }
3720                $alternate ^= 1;
3721        # shortlog uses      chop_str($co{'author_name'}, 10)
3722                my $author = chop_and_escape_str($co{'author_name'}, 15, 3);
3723                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3724                      "<td><i>" . $author . "</i></td>\n" .
3725                      "<td>";
3726                # originally git_history used chop_str($co{'title'}, 50)
3727                print format_subject_html($co{'title'}, $co{'title_short'},
3728                                          href(action=>"commit", hash=>$commit), $ref);
3729                print "</td>\n" .
3730                      "<td class=\"link\">" .
3731                      $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
3732                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
3733
3734                if ($ftype eq 'blob') {
3735                        my $blob_current = git_get_hash_by_path($hash_base, $file_name);
3736                        my $blob_parent  = git_get_hash_by_path($commit, $file_name);
3737                        if (defined $blob_current && defined $blob_parent &&
3738                                        $blob_current ne $blob_parent) {
3739                                print " | " .
3740                                        $cgi->a({-href => href(action=>"blobdiff",
3741                                                               hash=>$blob_current, hash_parent=>$blob_parent,
3742                                                               hash_base=>$hash_base, hash_parent_base=>$commit,
3743                                                               file_name=>$file_name)},
3744                                                "diff to current");
3745                        }
3746                }
3747                print "</td>\n" .
3748                      "</tr>\n";
3749        }
3750        if (defined $extra) {
3751                print "<tr>\n" .
3752                      "<td colspan=\"4\">$extra</td>\n" .
3753                      "</tr>\n";
3754        }
3755        print "</table>\n";
3756}
3757
3758sub git_tags_body {
3759        # uses global variable $project
3760        my ($taglist, $from, $to, $extra) = @_;
3761        $from = 0 unless defined $from;
3762        $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
3763
3764        print "<table class=\"tags\">\n";
3765        my $alternate = 1;
3766        for (my $i = $from; $i <= $to; $i++) {
3767                my $entry = $taglist->[$i];
3768                my %tag = %$entry;
3769                my $comment = $tag{'subject'};
3770                my $comment_short;
3771                if (defined $comment) {
3772                        $comment_short = chop_str($comment, 30, 5);
3773                }
3774                if ($alternate) {
3775                        print "<tr class=\"dark\">\n";
3776                } else {
3777                        print "<tr class=\"light\">\n";
3778                }
3779                $alternate ^= 1;
3780                if (defined $tag{'age'}) {
3781                        print "<td><i>$tag{'age'}</i></td>\n";
3782                } else {
3783                        print "<td></td>\n";
3784                }
3785                print "<td>" .
3786                      $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
3787                               -class => "list name"}, esc_html($tag{'name'})) .
3788                      "</td>\n" .
3789                      "<td>";
3790                if (defined $comment) {
3791                        print format_subject_html($comment, $comment_short,
3792                                                  href(action=>"tag", hash=>$tag{'id'}));
3793                }
3794                print "</td>\n" .
3795                      "<td class=\"selflink\">";
3796                if ($tag{'type'} eq "tag") {
3797                        print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
3798                } else {
3799                        print "&nbsp;";
3800                }
3801                print "</td>\n" .
3802                      "<td class=\"link\">" . " | " .
3803                      $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
3804                if ($tag{'reftype'} eq "commit") {
3805                        print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'fullname'})}, "shortlog") .
3806                              " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'fullname'})}, "log");
3807                } elsif ($tag{'reftype'} eq "blob") {
3808                        print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
3809                }
3810                print "</td>\n" .
3811                      "</tr>";
3812        }
3813        if (defined $extra) {
3814                print "<tr>\n" .
3815                      "<td colspan=\"5\">$extra</td>\n" .
3816                      "</tr>\n";
3817        }
3818        print "</table>\n";
3819}
3820
3821sub git_heads_body {
3822        # uses global variable $project
3823        my ($headlist, $head, $from, $to, $extra) = @_;
3824        $from = 0 unless defined $from;
3825        $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
3826
3827        print "<table class=\"heads\">\n";
3828        my $alternate = 1;
3829        for (my $i = $from; $i <= $to; $i++) {
3830                my $entry = $headlist->[$i];
3831                my %ref = %$entry;
3832                my $curr = $ref{'id'} eq $head;
3833                if ($alternate) {
3834                        print "<tr class=\"dark\">\n";
3835                } else {
3836                        print "<tr class=\"light\">\n";
3837                }
3838                $alternate ^= 1;
3839                print "<td><i>$ref{'age'}</i></td>\n" .
3840                      ($curr ? "<td class=\"current_head\">" : "<td>") .
3841                      $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'fullname'}),
3842                               -class => "list name"},esc_html($ref{'name'})) .
3843                      "</td>\n" .
3844                      "<td class=\"link\">" .
3845                      $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'fullname'})}, "shortlog") . " | " .
3846                      $cgi->a({-href => href(action=>"log", hash=>$ref{'fullname'})}, "log") . " | " .
3847                      $cgi->a({-href => href(action=>"tree", hash=>$ref{'fullname'}, hash_base=>$ref{'name'})}, "tree") .
3848                      "</td>\n" .
3849                      "</tr>";
3850        }
3851        if (defined $extra) {
3852                print "<tr>\n" .
3853                      "<td colspan=\"3\">$extra</td>\n" .
3854                      "</tr>\n";
3855        }
3856        print "</table>\n";
3857}
3858
3859sub git_search_grep_body {
3860        my ($commitlist, $from, $to, $extra) = @_;
3861        $from = 0 unless defined $from;
3862        $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3863
3864        print "<table class=\"commit_search\">\n";
3865        my $alternate = 1;
3866        for (my $i = $from; $i <= $to; $i++) {
3867                my %co = %{$commitlist->[$i]};
3868                if (!%co) {
3869                        next;
3870                }
3871                my $commit = $co{'id'};
3872                if ($alternate) {
3873                        print "<tr class=\"dark\">\n";
3874                } else {
3875                        print "<tr class=\"light\">\n";
3876                }
3877                $alternate ^= 1;
3878                my $author = chop_and_escape_str($co{'author_name'}, 15, 5);
3879                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3880                      "<td><i>" . $author . "</i></td>\n" .
3881                      "<td>" .
3882                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
3883                               -class => "list subject"},
3884                              chop_and_escape_str($co{'title'}, 50) . "<br/>");
3885                my $comment = $co{'comment'};
3886                foreach my $line (@$comment) {
3887                        if ($line =~ m/^(.*?)($search_regexp)(.*)$/i) {
3888                                my ($lead, $match, $trail) = ($1, $2, $3);
3889                                $match = chop_str($match, 70, 5, 'center');
3890                                my $contextlen = int((80 - length($match))/2);
3891                                $contextlen = 30 if ($contextlen > 30);
3892                                $lead  = chop_str($lead,  $contextlen, 10, 'left');
3893                                $trail = chop_str($trail, $contextlen, 10, 'right');
3894
3895                                $lead  = esc_html($lead);
3896                                $match = esc_html($match);
3897                                $trail = esc_html($trail);
3898
3899                                print "$lead<span class=\"match\">$match</span>$trail<br />";
3900                        }
3901                }
3902                print "</td>\n" .
3903                      "<td class=\"link\">" .
3904                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3905                      " | " .
3906                      $cgi->a({-href => href(action=>"commitdiff", hash=>$co{'id'})}, "commitdiff") .
3907                      " | " .
3908                      $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3909                print "</td>\n" .
3910                      "</tr>\n";
3911        }
3912        if (defined $extra) {
3913                print "<tr>\n" .
3914                      "<td colspan=\"3\">$extra</td>\n" .
3915                      "</tr>\n";
3916        }
3917        print "</table>\n";
3918}
3919
3920## ======================================================================
3921## ======================================================================
3922## actions
3923
3924sub git_project_list {
3925        my $order = $cgi->param('o');
3926        if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3927                die_error(undef, "Unknown order parameter");
3928        }
3929
3930        my @list = git_get_projects_list();
3931        if (!@list) {
3932                die_error(undef, "No projects found");
3933        }
3934
3935        git_header_html();
3936        if (-f $home_text) {
3937                print "<div class=\"index_include\">\n";
3938                open (my $fd, $home_text);
3939                print <$fd>;
3940                close $fd;
3941                print "</div>\n";
3942        }
3943        git_project_list_body(\@list, $order);
3944        git_footer_html();
3945}
3946
3947sub git_forks {
3948        my $order = $cgi->param('o');
3949        if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3950                die_error(undef, "Unknown order parameter");
3951        }
3952
3953        my @list = git_get_projects_list($project);
3954        if (!@list) {
3955                die_error(undef, "No forks found");
3956        }
3957
3958        git_header_html();
3959        git_print_page_nav('','');
3960        git_print_header_div('summary', "$project forks");
3961        git_project_list_body(\@list, $order);
3962        git_footer_html();
3963}
3964
3965sub git_project_index {
3966        my @projects = git_get_projects_list($project);
3967
3968        print $cgi->header(
3969                -type => 'text/plain',
3970                -charset => 'utf-8',
3971                -content_disposition => 'inline; filename="index.aux"');
3972
3973        foreach my $pr (@projects) {
3974                if (!exists $pr->{'owner'}) {
3975                        $pr->{'owner'} = git_get_project_owner("$pr->{'path'}");
3976                }
3977
3978                my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
3979                # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
3980                $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3981                $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3982                $path  =~ s/ /\+/g;
3983                $owner =~ s/ /\+/g;
3984
3985                print "$path $owner\n";
3986        }
3987}
3988
3989sub git_summary {
3990        my $descr = git_get_project_description($project) || "none";
3991        my %co = parse_commit("HEAD");
3992        my %cd = %co ? parse_date($co{'committer_epoch'}, $co{'committer_tz'}) : ();
3993        my $head = $co{'id'};
3994
3995        my $owner = git_get_project_owner($project);
3996
3997        my $refs = git_get_references();
3998        # These get_*_list functions return one more to allow us to see if
3999        # there are more ...
4000        my @taglist  = git_get_tags_list(16);
4001        my @headlist = git_get_heads_list(16);
4002        my @forklist;
4003        my ($check_forks) = gitweb_check_feature('forks');
4004
4005        if ($check_forks) {
4006                @forklist = git_get_projects_list($project);
4007        }
4008
4009        git_header_html();
4010        git_print_page_nav('summary','', $head);
4011
4012        print "<div class=\"title\">&nbsp;</div>\n";
4013        print "<table class=\"projects_list\">\n" .
4014              "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
4015              "<tr><td>owner</td><td>" . esc_html($owner) . "</td></tr>\n";
4016        if (defined $cd{'rfc2822'}) {
4017                print "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
4018        }
4019
4020        # use per project git URL list in $projectroot/$project/cloneurl
4021        # or make project git URL from git base URL and project name
4022        my $url_tag = "URL";
4023        my @url_list = git_get_project_url_list($project);
4024        @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
4025        foreach my $git_url (@url_list) {
4026                next unless $git_url;
4027                print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
4028                $url_tag = "";
4029        }
4030        print "</table>\n";
4031
4032        if (-s "$projectroot/$project/README.html") {
4033                if (open my $fd, "$projectroot/$project/README.html") {
4034                        print "<div class=\"title\">readme</div>\n" .
4035                              "<div class=\"readme\">\n";
4036                        print $_ while (<$fd>);
4037                        print "\n</div>\n"; # class="readme"
4038                        close $fd;
4039                }
4040        }
4041
4042        # we need to request one more than 16 (0..15) to check if
4043        # those 16 are all
4044        my @commitlist = $head ? parse_commits($head, 17) : ();
4045        if (@commitlist) {
4046                git_print_header_div('shortlog');
4047                git_shortlog_body(\@commitlist, 0, 15, $refs,
4048                                  $#commitlist <=  15 ? undef :
4049                                  $cgi->a({-href => href(action=>"shortlog")}, "..."));
4050        }
4051
4052        if (@taglist) {
4053                git_print_header_div('tags');
4054                git_tags_body(\@taglist, 0, 15,
4055                              $#taglist <=  15 ? undef :
4056                              $cgi->a({-href => href(action=>"tags")}, "..."));
4057        }
4058
4059        if (@headlist) {
4060                git_print_header_div('heads');
4061                git_heads_body(\@headlist, $head, 0, 15,
4062                               $#headlist <= 15 ? undef :
4063                               $cgi->a({-href => href(action=>"heads")}, "..."));
4064        }
4065
4066        if (@forklist) {
4067                git_print_header_div('forks');
4068                git_project_list_body(\@forklist, undef, 0, 15,
4069                                      $#forklist <= 15 ? undef :
4070                                      $cgi->a({-href => href(action=>"forks")}, "..."),
4071                                      'noheader');
4072        }
4073
4074        git_footer_html();
4075}
4076
4077sub git_tag {
4078        my $head = git_get_head_hash($project);
4079        git_header_html();
4080        git_print_page_nav('','', $head,undef,$head);
4081        my %tag = parse_tag($hash);
4082
4083        if (! %tag) {
4084                die_error(undef, "Unknown tag object");
4085        }
4086
4087        git_print_header_div('commit', esc_html($tag{'name'}), $hash);
4088        print "<div class=\"title_text\">\n" .
4089              "<table class=\"object_header\">\n" .
4090              "<tr>\n" .
4091              "<td>object</td>\n" .
4092              "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
4093                               $tag{'object'}) . "</td>\n" .
4094              "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
4095                                              $tag{'type'}) . "</td>\n" .
4096              "</tr>\n";
4097        if (defined($tag{'author'})) {
4098                my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
4099                print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
4100                print "<tr><td></td><td>" . $ad{'rfc2822'} .
4101                        sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
4102                        "</td></tr>\n";
4103        }
4104        print "</table>\n\n" .
4105              "</div>\n";
4106        print "<div class=\"page_body\">";
4107        my $comment = $tag{'comment'};
4108        foreach my $line (@$comment) {
4109                chomp $line;
4110                print esc_html($line, -nbsp=>1) . "<br/>\n";
4111        }
4112        print "</div>\n";
4113        git_footer_html();
4114}
4115
4116sub git_blame2 {
4117        my $fd;
4118        my $ftype;
4119
4120        my ($have_blame) = gitweb_check_feature('blame');
4121        if (!$have_blame) {
4122                die_error('403 Permission denied', "Permission denied");
4123        }
4124        die_error('404 Not Found', "File name not defined") if (!$file_name);
4125        $hash_base ||= git_get_head_hash($project);
4126        die_error(undef, "Couldn't find base commit") unless ($hash_base);
4127        my %co = parse_commit($hash_base)
4128                or die_error(undef, "Reading commit failed");
4129        if (!defined $hash) {
4130                $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
4131                        or die_error(undef, "Error looking up file");
4132        }
4133        $ftype = git_get_type($hash);
4134        if ($ftype !~ "blob") {
4135                die_error('400 Bad Request', "Object is not a blob");
4136        }
4137        open ($fd, "-|", git_cmd(), "blame", '-p', '--',
4138              $file_name, $hash_base)
4139                or die_error(undef, "Open git-blame failed");
4140        git_header_html();
4141        my $formats_nav =
4142                $cgi->a({-href => href(action=>"blob", -replay=>1)},
4143                        "blob") .
4144                " | " .
4145                $cgi->a({-href => href(action=>"history", -replay=>1)},
4146                        "history") .
4147                " | " .
4148                $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
4149                        "HEAD");
4150        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4151        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4152        git_print_page_path($file_name, $ftype, $hash_base);
4153        my @rev_color = (qw(light2 dark2));
4154        my $num_colors = scalar(@rev_color);
4155        my $current_color = 0;
4156        my $last_rev;
4157        print <<HTML;
4158<div class="page_body">
4159<table class="blame">
4160<tr><th>Commit</th><th>Line</th><th>Data</th></tr>
4161HTML
4162        my %metainfo = ();
4163        while (1) {
4164                $_ = <$fd>;
4165                last unless defined $_;
4166                my ($full_rev, $orig_lineno, $lineno, $group_size) =
4167                    /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
4168                if (!exists $metainfo{$full_rev}) {
4169                        $metainfo{$full_rev} = {};
4170                }
4171                my $meta = $metainfo{$full_rev};
4172                while (<$fd>) {
4173                        last if (s/^\t//);
4174                        if (/^(\S+) (.*)$/) {
4175                                $meta->{$1} = $2;
4176                        }
4177                }
4178                my $data = $_;
4179                chomp $data;
4180                my $rev = substr($full_rev, 0, 8);
4181                my $author = $meta->{'author'};
4182                my %date = parse_date($meta->{'author-time'},
4183                                      $meta->{'author-tz'});
4184                my $date = $date{'iso-tz'};
4185                if ($group_size) {
4186                        $current_color = ++$current_color % $num_colors;
4187                }
4188                print "<tr class=\"$rev_color[$current_color]\">\n";
4189                if ($group_size) {
4190                        print "<td class=\"sha1\"";
4191                        print " title=\"". esc_html($author) . ", $date\"";
4192                        print " rowspan=\"$group_size\"" if ($group_size > 1);
4193                        print ">";
4194                        print $cgi->a({-href => href(action=>"commit",
4195                                                     hash=>$full_rev,
4196                                                     file_name=>$file_name)},
4197                                      esc_html($rev));
4198                        print "</td>\n";
4199                }
4200                open (my $dd, "-|", git_cmd(), "rev-parse", "$full_rev^")
4201                        or die_error(undef, "Open git-rev-parse failed");
4202                my $parent_commit = <$dd>;
4203                close $dd;
4204                chomp($parent_commit);
4205                my $blamed = href(action => 'blame',
4206                                  file_name => $meta->{'filename'},
4207                                  hash_base => $parent_commit);
4208                print "<td class=\"linenr\">";
4209                print $cgi->a({ -href => "$blamed#l$orig_lineno",
4210                                -id => "l$lineno",
4211                                -class => "linenr" },
4212                              esc_html($lineno));
4213                print "</td>";
4214                print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
4215                print "</tr>\n";
4216        }
4217        print "</table>\n";
4218        print "</div>";
4219        close $fd
4220                or print "Reading blob failed\n";
4221        git_footer_html();
4222}
4223
4224sub git_blame {
4225        my $fd;
4226
4227        my ($have_blame) = gitweb_check_feature('blame');
4228        if (!$have_blame) {
4229                die_error('403 Permission denied', "Permission denied");
4230        }
4231        die_error('404 Not Found', "File name not defined") if (!$file_name);
4232        $hash_base ||= git_get_head_hash($project);
4233        die_error(undef, "Couldn't find base commit") unless ($hash_base);
4234        my %co = parse_commit($hash_base)
4235                or die_error(undef, "Reading commit failed");
4236        if (!defined $hash) {
4237                $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
4238                        or die_error(undef, "Error lookup file");
4239        }
4240        open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
4241                or die_error(undef, "Open git-annotate failed");
4242        git_header_html();
4243        my $formats_nav =
4244                $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
4245                        "blob") .
4246                " | " .
4247                $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
4248                        "history") .
4249                " | " .
4250                $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
4251                        "HEAD");
4252        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4253        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4254        git_print_page_path($file_name, 'blob', $hash_base);
4255        print "<div class=\"page_body\">\n";
4256        print <<HTML;
4257<table class="blame">
4258  <tr>
4259    <th>Commit</th>
4260    <th>Age</th>
4261    <th>Author</th>
4262    <th>Line</th>
4263    <th>Data</th>
4264  </tr>
4265HTML
4266        my @line_class = (qw(light dark));
4267        my $line_class_len = scalar (@line_class);
4268        my $line_class_num = $#line_class;
4269        while (my $line = <$fd>) {
4270                my $long_rev;
4271                my $short_rev;
4272                my $author;
4273                my $time;
4274                my $lineno;
4275                my $data;
4276                my $age;
4277                my $age_str;
4278                my $age_class;
4279
4280                chomp $line;
4281                $line_class_num = ($line_class_num + 1) % $line_class_len;
4282
4283                if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
4284                        $long_rev = $1;
4285                        $author   = $2;
4286                        $time     = $3;
4287                        $lineno   = $4;
4288                        $data     = $5;
4289                } else {
4290                        print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
4291                        next;
4292                }
4293                $short_rev  = substr ($long_rev, 0, 8);
4294                $age        = time () - $time;
4295                $age_str    = age_string ($age);
4296                $age_str    =~ s/ /&nbsp;/g;
4297                $age_class  = age_class($age);
4298                $author     = esc_html ($author);
4299                $author     =~ s/ /&nbsp;/g;
4300
4301                $data = untabify($data);
4302                $data = esc_html ($data);
4303
4304                print <<HTML;
4305  <tr class="$line_class[$line_class_num]">
4306    <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
4307    <td class="$age_class">$age_str</td>
4308    <td>$author</td>
4309    <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
4310    <td class="pre">$data</td>
4311  </tr>
4312HTML
4313        } # while (my $line = <$fd>)
4314        print "</table>\n\n";
4315        close $fd
4316                or print "Reading blob failed.\n";
4317        print "</div>";
4318        git_footer_html();
4319}
4320
4321sub git_tags {
4322        my $head = git_get_head_hash($project);
4323        git_header_html();
4324        git_print_page_nav('','', $head,undef,$head);
4325        git_print_header_div('summary', $project);
4326
4327        my @tagslist = git_get_tags_list();
4328        if (@tagslist) {
4329                git_tags_body(\@tagslist);
4330        }
4331        git_footer_html();
4332}
4333
4334sub git_heads {
4335        my $head = git_get_head_hash($project);
4336        git_header_html();
4337        git_print_page_nav('','', $head,undef,$head);
4338        git_print_header_div('summary', $project);
4339
4340        my @headslist = git_get_heads_list();
4341        if (@headslist) {
4342                git_heads_body(\@headslist, $head);
4343        }
4344        git_footer_html();
4345}
4346
4347sub git_blob_plain {
4348        my $type = shift;
4349        my $expires;
4350
4351        if (!defined $hash) {
4352                if (defined $file_name) {
4353                        my $base = $hash_base || git_get_head_hash($project);
4354                        $hash = git_get_hash_by_path($base, $file_name, "blob")
4355                                or die_error(undef, "Error lookup file");
4356                } else {
4357                        die_error(undef, "No file name defined");
4358                }
4359        } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4360                # blobs defined by non-textual hash id's can be cached
4361                $expires = "+1d";
4362        }
4363
4364        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
4365                or die_error(undef, "Open git-cat-file blob '$hash' failed");
4366
4367        # content-type (can include charset)
4368        $type = blob_contenttype($fd, $file_name, $type);
4369
4370        # "save as" filename, even when no $file_name is given
4371        my $save_as = "$hash";
4372        if (defined $file_name) {
4373                $save_as = $file_name;
4374        } elsif ($type =~ m/^text\//) {
4375                $save_as .= '.txt';
4376        }
4377
4378        print $cgi->header(
4379                -type => $type,
4380                -expires => $expires,
4381                -content_disposition => 'inline; filename="' . $save_as . '"');
4382        undef $/;
4383        binmode STDOUT, ':raw';
4384        print <$fd>;
4385        binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
4386        $/ = "\n";
4387        close $fd;
4388}
4389
4390sub git_blob {
4391        my $expires;
4392
4393        if (!defined $hash) {
4394                if (defined $file_name) {
4395                        my $base = $hash_base || git_get_head_hash($project);
4396                        $hash = git_get_hash_by_path($base, $file_name, "blob")
4397                                or die_error(undef, "Error lookup file");
4398                } else {
4399                        die_error(undef, "No file name defined");
4400                }
4401        } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4402                # blobs defined by non-textual hash id's can be cached
4403                $expires = "+1d";
4404        }
4405
4406        my ($have_blame) = gitweb_check_feature('blame');
4407        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
4408                or die_error(undef, "Couldn't cat $file_name, $hash");
4409        my $mimetype = blob_mimetype($fd, $file_name);
4410        if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)! && -B $fd) {
4411                close $fd;
4412                return git_blob_plain($mimetype);
4413        }
4414        # we can have blame only for text/* mimetype
4415        $have_blame &&= ($mimetype =~ m!^text/!);
4416
4417        git_header_html(undef, $expires);
4418        my $formats_nav = '';
4419        if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4420                if (defined $file_name) {
4421                        if ($have_blame) {
4422                                $formats_nav .=
4423                                        $cgi->a({-href => href(action=>"blame", -replay=>1)},
4424                                                "blame") .
4425                                        " | ";
4426                        }
4427                        $formats_nav .=
4428                                $cgi->a({-href => href(action=>"history", -replay=>1)},
4429                                        "history") .
4430                                " | " .
4431                                $cgi->a({-href => href(action=>"blob_plain", -replay=>1)},
4432                                        "raw") .
4433                                " | " .
4434                                $cgi->a({-href => href(action=>"blob",
4435                                                       hash_base=>"HEAD", file_name=>$file_name)},
4436                                        "HEAD");
4437                } else {
4438                        $formats_nav .=
4439                                $cgi->a({-href => href(action=>"blob_plain", -replay=>1)},
4440                                        "raw");
4441                }
4442                git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4443                git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4444        } else {
4445                print "<div class=\"page_nav\">\n" .
4446                      "<br/><br/></div>\n" .
4447                      "<div class=\"title\">$hash</div>\n";
4448        }
4449        git_print_page_path($file_name, "blob", $hash_base);
4450        print "<div class=\"page_body\">\n";
4451        if ($mimetype =~ m!^image/!) {
4452                print qq!<img type="$mimetype"!;
4453                if ($file_name) {
4454                        print qq! alt="$file_name" title="$file_name"!;
4455                }
4456                print qq! src="! .
4457                      href(action=>"blob_plain", hash=>$hash,
4458                           hash_base=>$hash_base, file_name=>$file_name) .
4459                      qq!" />\n!;
4460        } else {
4461                my $nr;
4462                while (my $line = <$fd>) {
4463                        chomp $line;
4464                        $nr++;
4465                        $line = untabify($line);
4466                        printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
4467                               $nr, $nr, $nr, esc_html($line, -nbsp=>1);
4468                }
4469        }
4470        close $fd
4471                or print "Reading blob failed.\n";
4472        print "</div>";
4473        git_footer_html();
4474}
4475
4476sub git_tree {
4477        if (!defined $hash_base) {
4478                $hash_base = "HEAD";
4479        }
4480        if (!defined $hash) {
4481                if (defined $file_name) {
4482                        $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
4483                } else {
4484                        $hash = $hash_base;
4485                }
4486        }
4487        $/ = "\0";
4488        open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
4489                or die_error(undef, "Open git-ls-tree failed");
4490        my @entries = map { chomp; $_ } <$fd>;
4491        close $fd or die_error(undef, "Reading tree failed");
4492        $/ = "\n";
4493
4494        my $refs = git_get_references();
4495        my $ref = format_ref_marker($refs, $hash_base);
4496        git_header_html();
4497        my $basedir = '';
4498        my ($have_blame) = gitweb_check_feature('blame');
4499        if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4500                my @views_nav = ();
4501                if (defined $file_name) {
4502                        push @views_nav,
4503                                $cgi->a({-href => href(action=>"history", -replay=>1)},
4504                                        "history"),
4505                                $cgi->a({-href => href(action=>"tree",
4506                                                       hash_base=>"HEAD", file_name=>$file_name)},
4507                                        "HEAD"),
4508                }
4509                my $snapshot_links = format_snapshot_links($hash);
4510                if (defined $snapshot_links) {
4511                        # FIXME: Should be available when we have no hash base as well.
4512                        push @views_nav, $snapshot_links;
4513                }
4514                git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
4515                git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
4516        } else {
4517                undef $hash_base;
4518                print "<div class=\"page_nav\">\n";
4519                print "<br/><br/></div>\n";
4520                print "<div class=\"title\">$hash</div>\n";
4521        }
4522        if (defined $file_name) {
4523                $basedir = $file_name;
4524                if ($basedir ne '' && substr($basedir, -1) ne '/') {
4525                        $basedir .= '/';
4526                }
4527        }
4528        git_print_page_path($file_name, 'tree', $hash_base);
4529        print "<div class=\"page_body\">\n";
4530        print "<table class=\"tree\">\n";
4531        my $alternate = 1;
4532        # '..' (top directory) link if possible
4533        if (defined $hash_base &&
4534            defined $file_name && $file_name =~ m![^/]+$!) {
4535                if ($alternate) {
4536                        print "<tr class=\"dark\">\n";
4537                } else {
4538                        print "<tr class=\"light\">\n";
4539                }
4540                $alternate ^= 1;
4541
4542                my $up = $file_name;
4543                $up =~ s!/?[^/]+$!!;
4544                undef $up unless $up;
4545                # based on git_print_tree_entry
4546                print '<td class="mode">' . mode_str('040000') . "</td>\n";
4547                print '<td class="list">';
4548                print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
4549                                             file_name=>$up)},
4550                              "..");
4551                print "</td>\n";
4552                print "<td class=\"link\"></td>\n";
4553
4554                print "</tr>\n";
4555        }
4556        foreach my $line (@entries) {
4557                my %t = parse_ls_tree_line($line, -z => 1);
4558
4559                if ($alternate) {
4560                        print "<tr class=\"dark\">\n";
4561                } else {
4562                        print "<tr class=\"light\">\n";
4563                }
4564                $alternate ^= 1;
4565
4566                git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
4567
4568                print "</tr>\n";
4569        }
4570        print "</table>\n" .
4571              "</div>";
4572        git_footer_html();
4573}
4574
4575sub git_snapshot {
4576        my @supported_fmts = gitweb_check_feature('snapshot');
4577        @supported_fmts = filter_snapshot_fmts(@supported_fmts);
4578
4579        my $format = $cgi->param('sf');
4580        if (!@supported_fmts) {
4581                die_error('403 Permission denied', "Permission denied");
4582        }
4583        # default to first supported snapshot format
4584        $format ||= $supported_fmts[0];
4585        if ($format !~ m/^[a-z0-9]+$/) {
4586                die_error(undef, "Invalid snapshot format parameter");
4587        } elsif (!exists($known_snapshot_formats{$format})) {
4588                die_error(undef, "Unknown snapshot format");
4589        } elsif (!grep($_ eq $format, @supported_fmts)) {
4590                die_error(undef, "Unsupported snapshot format");
4591        }
4592
4593        if (!defined $hash) {
4594                $hash = git_get_head_hash($project);
4595        }
4596
4597        my $name = $project;
4598        $name =~ s,([^/])/*\.git$,$1,;
4599        $name = basename($name);
4600        my $filename = to_utf8($name);
4601        $name =~ s/\047/\047\\\047\047/g;
4602        my $cmd;
4603        $filename .= "-$hash$known_snapshot_formats{$format}{'suffix'}";
4604        $cmd = quote_command(
4605                git_cmd(), 'archive',
4606                "--format=$known_snapshot_formats{$format}{'format'}",
4607                "--prefix=$name/", $hash);
4608        if (exists $known_snapshot_formats{$format}{'compressor'}) {
4609                $cmd .= ' | ' . quote_command(@{$known_snapshot_formats{$format}{'compressor'}});
4610        }
4611
4612        print $cgi->header(
4613                -type => $known_snapshot_formats{$format}{'type'},
4614                -content_disposition => 'inline; filename="' . "$filename" . '"',
4615                -status => '200 OK');
4616
4617        open my $fd, "-|", $cmd
4618                or die_error(undef, "Execute git-archive failed");
4619        binmode STDOUT, ':raw';
4620        print <$fd>;
4621        binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
4622        close $fd;
4623}
4624
4625sub git_log {
4626        my $head = git_get_head_hash($project);
4627        if (!defined $hash) {
4628                $hash = $head;
4629        }
4630        if (!defined $page) {
4631                $page = 0;
4632        }
4633        my $refs = git_get_references();
4634
4635        my @commitlist = parse_commits($hash, 101, (100 * $page));
4636
4637        my $paging_nav = format_paging_nav('log', $hash, $head, $page, $#commitlist >= 100);
4638
4639        git_header_html();
4640        git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
4641
4642        if (!@commitlist) {
4643                my %co = parse_commit($hash);
4644
4645                git_print_header_div('summary', $project);
4646                print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
4647        }
4648        my $to = ($#commitlist >= 99) ? (99) : ($#commitlist);
4649        for (my $i = 0; $i <= $to; $i++) {
4650                my %co = %{$commitlist[$i]};
4651                next if !%co;
4652                my $commit = $co{'id'};
4653                my $ref = format_ref_marker($refs, $commit);
4654                my %ad = parse_date($co{'author_epoch'});
4655                git_print_header_div('commit',
4656                               "<span class=\"age\">$co{'age_string'}</span>" .
4657                               esc_html($co{'title'}) . $ref,
4658                               $commit);
4659                print "<div class=\"title_text\">\n" .
4660                      "<div class=\"log_link\">\n" .
4661                      $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
4662                      " | " .
4663                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
4664                      " | " .
4665                      $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
4666                      "<br/>\n" .
4667                      "</div>\n" .
4668                      "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
4669                      "</div>\n";
4670
4671                print "<div class=\"log_body\">\n";
4672                git_print_log($co{'comment'}, -final_empty_line=> 1);
4673                print "</div>\n";
4674        }
4675        if ($#commitlist >= 100) {
4676                print "<div class=\"page_nav\">\n";
4677                print $cgi->a({-href => href(-replay=>1, page=>$page+1),
4678                               -accesskey => "n", -title => "Alt-n"}, "next");
4679                print "</div>\n";
4680        }
4681        git_footer_html();
4682}
4683
4684sub git_commit {
4685        $hash ||= $hash_base || "HEAD";
4686        my %co = parse_commit($hash);
4687        if (!%co) {
4688                die_error(undef, "Unknown commit object");
4689        }
4690        my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4691        my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
4692
4693        my $parent  = $co{'parent'};
4694        my $parents = $co{'parents'}; # listref
4695
4696        # we need to prepare $formats_nav before any parameter munging
4697        my $formats_nav;
4698        if (!defined $parent) {
4699                # --root commitdiff
4700                $formats_nav .= '(initial)';
4701        } elsif (@$parents == 1) {
4702                # single parent commit
4703                $formats_nav .=
4704                        '(parent: ' .
4705                        $cgi->a({-href => href(action=>"commit",
4706                                               hash=>$parent)},
4707                                esc_html(substr($parent, 0, 7))) .
4708                        ')';
4709        } else {
4710                # merge commit
4711                $formats_nav .=
4712                        '(merge: ' .
4713                        join(' ', map {
4714                                $cgi->a({-href => href(action=>"commit",
4715                                                       hash=>$_)},
4716                                        esc_html(substr($_, 0, 7)));
4717                        } @$parents ) .
4718                        ')';
4719        }
4720
4721        if (!defined $parent) {
4722                $parent = "--root";
4723        }
4724        my @difftree;
4725        open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
4726                @diff_opts,
4727                (@$parents <= 1 ? $parent : '-c'),
4728                $hash, "--"
4729                or die_error(undef, "Open git-diff-tree failed");
4730        @difftree = map { chomp; $_ } <$fd>;
4731        close $fd or die_error(undef, "Reading git-diff-tree failed");
4732
4733        # non-textual hash id's can be cached
4734        my $expires;
4735        if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4736                $expires = "+1d";
4737        }
4738        my $refs = git_get_references();
4739        my $ref = format_ref_marker($refs, $co{'id'});
4740
4741        git_header_html(undef, $expires);
4742        git_print_page_nav('commit', '',
4743                           $hash, $co{'tree'}, $hash,
4744                           $formats_nav);
4745
4746        if (defined $co{'parent'}) {
4747                git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
4748        } else {
4749                git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
4750        }
4751        print "<div class=\"title_text\">\n" .
4752              "<table class=\"object_header\">\n";
4753        print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
4754              "<tr>" .
4755              "<td></td><td> $ad{'rfc2822'}";
4756        if ($ad{'hour_local'} < 6) {
4757                printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
4758                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4759        } else {
4760                printf(" (%02d:%02d %s)",
4761                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4762        }
4763        print "</td>" .
4764              "</tr>\n";
4765        print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
4766        print "<tr><td></td><td> $cd{'rfc2822'}" .
4767              sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
4768              "</td></tr>\n";
4769        print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
4770        print "<tr>" .
4771              "<td>tree</td>" .
4772              "<td class=\"sha1\">" .
4773              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
4774                       class => "list"}, $co{'tree'}) .
4775              "</td>" .
4776              "<td class=\"link\">" .
4777              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
4778                      "tree");
4779        my $snapshot_links = format_snapshot_links($hash);
4780        if (defined $snapshot_links) {
4781                print " | " . $snapshot_links;
4782        }
4783        print "</td>" .
4784              "</tr>\n";
4785
4786        foreach my $par (@$parents) {
4787                print "<tr>" .
4788                      "<td>parent</td>" .
4789                      "<td class=\"sha1\">" .
4790                      $cgi->a({-href => href(action=>"commit", hash=>$par),
4791                               class => "list"}, $par) .
4792                      "</td>" .
4793                      "<td class=\"link\">" .
4794                      $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
4795                      " | " .
4796                      $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
4797                      "</td>" .
4798                      "</tr>\n";
4799        }
4800        print "</table>".
4801              "</div>\n";
4802
4803        print "<div class=\"page_body\">\n";
4804        git_print_log($co{'comment'});
4805        print "</div>\n";
4806
4807        git_difftree_body(\@difftree, $hash, @$parents);
4808
4809        git_footer_html();
4810}
4811
4812sub git_object {
4813        # object is defined by:
4814        # - hash or hash_base alone
4815        # - hash_base and file_name
4816        my $type;
4817
4818        # - hash or hash_base alone
4819        if ($hash || ($hash_base && !defined $file_name)) {
4820                my $object_id = $hash || $hash_base;
4821
4822                open my $fd, "-|", quote_command(
4823                        git_cmd(), 'cat-file', '-t', $object_id) . ' 2> /dev/null'
4824                        or die_error('404 Not Found', "Object does not exist");
4825                $type = <$fd>;
4826                chomp $type;
4827                close $fd
4828                        or die_error('404 Not Found', "Object does not exist");
4829
4830        # - hash_base and file_name
4831        } elsif ($hash_base && defined $file_name) {
4832                $file_name =~ s,/+$,,;
4833
4834                system(git_cmd(), "cat-file", '-e', $hash_base) == 0
4835                        or die_error('404 Not Found', "Base object does not exist");
4836
4837                # here errors should not hapen
4838                open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
4839                        or die_error(undef, "Open git-ls-tree failed");
4840                my $line = <$fd>;
4841                close $fd;
4842
4843                #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
4844                unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
4845                        die_error('404 Not Found', "File or directory for given base does not exist");
4846                }
4847                $type = $2;
4848                $hash = $3;
4849        } else {
4850                die_error('404 Not Found', "Not enough information to find object");
4851        }
4852
4853        print $cgi->redirect(-uri => href(action=>$type, -full=>1,
4854                                          hash=>$hash, hash_base=>$hash_base,
4855                                          file_name=>$file_name),
4856                             -status => '302 Found');
4857}
4858
4859sub git_blobdiff {
4860        my $format = shift || 'html';
4861
4862        my $fd;
4863        my @difftree;
4864        my %diffinfo;
4865        my $expires;
4866
4867        # preparing $fd and %diffinfo for git_patchset_body
4868        # new style URI
4869        if (defined $hash_base && defined $hash_parent_base) {
4870                if (defined $file_name) {
4871                        # read raw output
4872                        open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4873                                $hash_parent_base, $hash_base,
4874                                "--", (defined $file_parent ? $file_parent : ()), $file_name
4875                                or die_error(undef, "Open git-diff-tree failed");
4876                        @difftree = map { chomp; $_ } <$fd>;
4877                        close $fd
4878                                or die_error(undef, "Reading git-diff-tree failed");
4879                        @difftree
4880                                or die_error('404 Not Found', "Blob diff not found");
4881
4882                } elsif (defined $hash &&
4883                         $hash =~ /[0-9a-fA-F]{40}/) {
4884                        # try to find filename from $hash
4885
4886                        # read filtered raw output
4887                        open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4888                                $hash_parent_base, $hash_base, "--"
4889                                or die_error(undef, "Open git-diff-tree failed");
4890                        @difftree =
4891                                # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
4892                                # $hash == to_id
4893                                grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
4894                                map { chomp; $_ } <$fd>;
4895                        close $fd
4896                                or die_error(undef, "Reading git-diff-tree failed");
4897                        @difftree
4898                                or die_error('404 Not Found', "Blob diff not found");
4899
4900                } else {
4901                        die_error('404 Not Found', "Missing one of the blob diff parameters");
4902                }
4903
4904                if (@difftree > 1) {
4905                        die_error('404 Not Found', "Ambiguous blob diff specification");
4906                }
4907
4908                %diffinfo = parse_difftree_raw_line($difftree[0]);
4909                $file_parent ||= $diffinfo{'from_file'} || $file_name;
4910                $file_name   ||= $diffinfo{'to_file'};
4911
4912                $hash_parent ||= $diffinfo{'from_id'};
4913                $hash        ||= $diffinfo{'to_id'};
4914
4915                # non-textual hash id's can be cached
4916                if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
4917                    $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
4918                        $expires = '+1d';
4919                }
4920
4921                # open patch output
4922                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4923                        '-p', ($format eq 'html' ? "--full-index" : ()),
4924                        $hash_parent_base, $hash_base,
4925                        "--", (defined $file_parent ? $file_parent : ()), $file_name
4926                        or die_error(undef, "Open git-diff-tree failed");
4927        }
4928
4929        # old/legacy style URI -- not generated anymore since 1.4.3.
4930        if (!%diffinfo) {
4931                die_error('404 Not Found', "Missing one of the blob diff parameters")
4932        }
4933
4934        # header
4935        if ($format eq 'html') {
4936                my $formats_nav =
4937                        $cgi->a({-href => href(action=>"blobdiff_plain", -replay=>1)},
4938                                "raw");
4939                git_header_html(undef, $expires);
4940                if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4941                        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4942                        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4943                } else {
4944                        print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
4945                        print "<div class=\"title\">$hash vs $hash_parent</div>\n";
4946                }
4947                if (defined $file_name) {
4948                        git_print_page_path($file_name, "blob", $hash_base);
4949                } else {
4950                        print "<div class=\"page_path\"></div>\n";
4951                }
4952
4953        } elsif ($format eq 'plain') {
4954                print $cgi->header(
4955                        -type => 'text/plain',
4956                        -charset => 'utf-8',
4957                        -expires => $expires,
4958                        -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
4959
4960                print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4961
4962        } else {
4963                die_error(undef, "Unknown blobdiff format");
4964        }
4965
4966        # patch
4967        if ($format eq 'html') {
4968                print "<div class=\"page_body\">\n";
4969
4970                git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
4971                close $fd;
4972
4973                print "</div>\n"; # class="page_body"
4974                git_footer_html();
4975
4976        } else {
4977                while (my $line = <$fd>) {
4978                        $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
4979                        $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
4980
4981                        print $line;
4982
4983                        last if $line =~ m!^\+\+\+!;
4984                }
4985                local $/ = undef;
4986                print <$fd>;
4987                close $fd;
4988        }
4989}
4990
4991sub git_blobdiff_plain {
4992        git_blobdiff('plain');
4993}
4994
4995sub git_commitdiff {
4996        my $format = shift || 'html';
4997        $hash ||= $hash_base || "HEAD";
4998        my %co = parse_commit($hash);
4999        if (!%co) {
5000                die_error(undef, "Unknown commit object");
5001        }
5002
5003        # choose format for commitdiff for merge
5004        if (! defined $hash_parent && @{$co{'parents'}} > 1) {
5005                $hash_parent = '--cc';
5006        }
5007        # we need to prepare $formats_nav before almost any parameter munging
5008        my $formats_nav;
5009        if ($format eq 'html') {
5010                $formats_nav =
5011                        $cgi->a({-href => href(action=>"commitdiff_plain", -replay=>1)},
5012                                "raw");
5013
5014                if (defined $hash_parent &&
5015                    $hash_parent ne '-c' && $hash_parent ne '--cc') {
5016                        # commitdiff with two commits given
5017                        my $hash_parent_short = $hash_parent;
5018                        if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
5019                                $hash_parent_short = substr($hash_parent, 0, 7);
5020                        }
5021                        $formats_nav .=
5022                                ' (from';
5023                        for (my $i = 0; $i < @{$co{'parents'}}; $i++) {
5024                                if ($co{'parents'}[$i] eq $hash_parent) {
5025                                        $formats_nav .= ' parent ' . ($i+1);
5026                                        last;
5027                                }
5028                        }
5029                        $formats_nav .= ': ' .
5030                                $cgi->a({-href => href(action=>"commitdiff",
5031                                                       hash=>$hash_parent)},
5032                                        esc_html($hash_parent_short)) .
5033                                ')';
5034                } elsif (!$co{'parent'}) {
5035                        # --root commitdiff
5036                        $formats_nav .= ' (initial)';
5037                } elsif (scalar @{$co{'parents'}} == 1) {
5038                        # single parent commit
5039                        $formats_nav .=
5040                                ' (parent: ' .
5041                                $cgi->a({-href => href(action=>"commitdiff",
5042                                                       hash=>$co{'parent'})},
5043                                        esc_html(substr($co{'parent'}, 0, 7))) .
5044                                ')';
5045                } else {
5046                        # merge commit
5047                        if ($hash_parent eq '--cc') {
5048                                $formats_nav .= ' | ' .
5049                                        $cgi->a({-href => href(action=>"commitdiff",
5050                                                               hash=>$hash, hash_parent=>'-c')},
5051                                                'combined');
5052                        } else { # $hash_parent eq '-c'
5053                                $formats_nav .= ' | ' .
5054                                        $cgi->a({-href => href(action=>"commitdiff",
5055                                                               hash=>$hash, hash_parent=>'--cc')},
5056                                                'compact');
5057                        }
5058                        $formats_nav .=
5059                                ' (merge: ' .
5060                                join(' ', map {
5061                                        $cgi->a({-href => href(action=>"commitdiff",
5062                                                               hash=>$_)},
5063                                                esc_html(substr($_, 0, 7)));
5064                                } @{$co{'parents'}} ) .
5065                                ')';
5066                }
5067        }
5068
5069        my $hash_parent_param = $hash_parent;
5070        if (!defined $hash_parent_param) {
5071                # --cc for multiple parents, --root for parentless
5072                $hash_parent_param =
5073                        @{$co{'parents'}} > 1 ? '--cc' : $co{'parent'} || '--root';
5074        }
5075
5076        # read commitdiff
5077        my $fd;
5078        my @difftree;
5079        if ($format eq 'html') {
5080                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
5081                        "--no-commit-id", "--patch-with-raw", "--full-index",
5082                        $hash_parent_param, $hash, "--"
5083                        or die_error(undef, "Open git-diff-tree failed");
5084
5085                while (my $line = <$fd>) {
5086                        chomp $line;
5087                        # empty line ends raw part of diff-tree output
5088                        last unless $line;
5089                        push @difftree, scalar parse_difftree_raw_line($line);
5090                }
5091
5092        } elsif ($format eq 'plain') {
5093                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
5094                        '-p', $hash_parent_param, $hash, "--"
5095                        or die_error(undef, "Open git-diff-tree failed");
5096
5097        } else {
5098                die_error(undef, "Unknown commitdiff format");
5099        }
5100
5101        # non-textual hash id's can be cached
5102        my $expires;
5103        if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
5104                $expires = "+1d";
5105        }
5106
5107        # write commit message
5108        if ($format eq 'html') {
5109                my $refs = git_get_references();
5110                my $ref = format_ref_marker($refs, $co{'id'});
5111
5112                git_header_html(undef, $expires);
5113                git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
5114                git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
5115                git_print_authorship(\%co);
5116                print "<div class=\"page_body\">\n";
5117                if (@{$co{'comment'}} > 1) {
5118                        print "<div class=\"log\">\n";
5119                        git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
5120                        print "</div>\n"; # class="log"
5121                }
5122
5123        } elsif ($format eq 'plain') {
5124                my $refs = git_get_references("tags");
5125                my $tagname = git_get_rev_name_tags($hash);
5126                my $filename = basename($project) . "-$hash.patch";
5127
5128                print $cgi->header(
5129                        -type => 'text/plain',
5130                        -charset => 'utf-8',
5131                        -expires => $expires,
5132                        -content_disposition => 'inline; filename="' . "$filename" . '"');
5133                my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
5134                print "From: " . to_utf8($co{'author'}) . "\n";
5135                print "Date: $ad{'rfc2822'} ($ad{'tz_local'})\n";
5136                print "Subject: " . to_utf8($co{'title'}) . "\n";
5137
5138                print "X-Git-Tag: $tagname\n" if $tagname;
5139                print "X-Git-Url: " . $cgi->self_url() . "\n\n";
5140
5141                foreach my $line (@{$co{'comment'}}) {
5142                        print to_utf8($line) . "\n";
5143                }
5144                print "---\n\n";
5145        }
5146
5147        # write patch
5148        if ($format eq 'html') {
5149                my $use_parents = !defined $hash_parent ||
5150                        $hash_parent eq '-c' || $hash_parent eq '--cc';
5151                git_difftree_body(\@difftree, $hash,
5152                                  $use_parents ? @{$co{'parents'}} : $hash_parent);
5153                print "<br/>\n";
5154
5155                git_patchset_body($fd, \@difftree, $hash,
5156                                  $use_parents ? @{$co{'parents'}} : $hash_parent);
5157                close $fd;
5158                print "</div>\n"; # class="page_body"
5159                git_footer_html();
5160
5161        } elsif ($format eq 'plain') {
5162                local $/ = undef;
5163                print <$fd>;
5164                close $fd
5165                        or print "Reading git-diff-tree failed\n";
5166        }
5167}
5168
5169sub git_commitdiff_plain {
5170        git_commitdiff('plain');
5171}
5172
5173sub git_history {
5174        if (!defined $hash_base) {
5175                $hash_base = git_get_head_hash($project);
5176        }
5177        if (!defined $page) {
5178                $page = 0;
5179        }
5180        my $ftype;
5181        my %co = parse_commit($hash_base);
5182        if (!%co) {
5183                die_error(undef, "Unknown commit object");
5184        }
5185
5186        my $refs = git_get_references();
5187        my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
5188
5189        my @commitlist = parse_commits($hash_base, 101, (100 * $page),
5190                                       $file_name, "--full-history");
5191        if (!@commitlist) {
5192                die_error('404 Not Found', "No such file or directory on given branch");
5193        }
5194
5195        if (!defined $hash && defined $file_name) {
5196                # some commits could have deleted file in question,
5197                # and not have it in tree, but one of them has to have it
5198                for (my $i = 0; $i <= @commitlist; $i++) {
5199                        $hash = git_get_hash_by_path($commitlist[$i]{'id'}, $file_name);
5200                        last if defined $hash;
5201                }
5202        }
5203        if (defined $hash) {
5204                $ftype = git_get_type($hash);
5205        }
5206        if (!defined $ftype) {
5207                die_error(undef, "Unknown type of object");
5208        }
5209
5210        my $paging_nav = '';
5211        if ($page > 0) {
5212                $paging_nav .=
5213                        $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
5214                                               file_name=>$file_name)},
5215                                "first");
5216                $paging_nav .= " &sdot; " .
5217                        $cgi->a({-href => href(-replay=>1, page=>$page-1),
5218                                 -accesskey => "p", -title => "Alt-p"}, "prev");
5219        } else {
5220                $paging_nav .= "first";
5221                $paging_nav .= " &sdot; prev";
5222        }
5223        my $next_link = '';
5224        if ($#commitlist >= 100) {
5225                $next_link =
5226                        $cgi->a({-href => href(-replay=>1, page=>$page+1),
5227                                 -accesskey => "n", -title => "Alt-n"}, "next");
5228                $paging_nav .= " &sdot; $next_link";
5229        } else {
5230                $paging_nav .= " &sdot; next";
5231        }
5232
5233        git_header_html();
5234        git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
5235        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
5236        git_print_page_path($file_name, $ftype, $hash_base);
5237
5238        git_history_body(\@commitlist, 0, 99,
5239                         $refs, $hash_base, $ftype, $next_link);
5240
5241        git_footer_html();
5242}
5243
5244sub git_search {
5245        my ($have_search) = gitweb_check_feature('search');
5246        if (!$have_search) {
5247                die_error('403 Permission denied', "Permission denied");
5248        }
5249        if (!defined $searchtext) {
5250                die_error(undef, "Text field empty");
5251        }
5252        if (!defined $hash) {
5253                $hash = git_get_head_hash($project);
5254        }
5255        my %co = parse_commit($hash);
5256        if (!%co) {
5257                die_error(undef, "Unknown commit object");
5258        }
5259        if (!defined $page) {
5260                $page = 0;
5261        }
5262
5263        $searchtype ||= 'commit';
5264        if ($searchtype eq 'pickaxe') {
5265                # pickaxe may take all resources of your box and run for several minutes
5266                # with every query - so decide by yourself how public you make this feature
5267                my ($have_pickaxe) = gitweb_check_feature('pickaxe');
5268                if (!$have_pickaxe) {
5269                        die_error('403 Permission denied', "Permission denied");
5270                }
5271        }
5272        if ($searchtype eq 'grep') {
5273                my ($have_grep) = gitweb_check_feature('grep');
5274                if (!$have_grep) {
5275                        die_error('403 Permission denied', "Permission denied");
5276                }
5277        }
5278
5279        git_header_html();
5280
5281        if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
5282                my $greptype;
5283                if ($searchtype eq 'commit') {
5284                        $greptype = "--grep=";
5285                } elsif ($searchtype eq 'author') {
5286                        $greptype = "--author=";
5287                } elsif ($searchtype eq 'committer') {
5288                        $greptype = "--committer=";
5289                }
5290                $greptype .= $searchtext;
5291                my @commitlist = parse_commits($hash, 101, (100 * $page), undef,
5292                                               $greptype, '--regexp-ignore-case',
5293                                               $search_use_regexp ? '--extended-regexp' : '--fixed-strings');
5294
5295                my $paging_nav = '';
5296                if ($page > 0) {
5297                        $paging_nav .=
5298                                $cgi->a({-href => href(action=>"search", hash=>$hash,
5299                                                       searchtext=>$searchtext,
5300                                                       searchtype=>$searchtype)},
5301                                        "first");
5302                        $paging_nav .= " &sdot; " .
5303                                $cgi->a({-href => href(-replay=>1, page=>$page-1),
5304                                         -accesskey => "p", -title => "Alt-p"}, "prev");
5305                } else {
5306                        $paging_nav .= "first";
5307                        $paging_nav .= " &sdot; prev";
5308                }
5309                my $next_link = '';
5310                if ($#commitlist >= 100) {
5311                        $next_link =
5312                                $cgi->a({-href => href(-replay=>1, page=>$page+1),
5313                                         -accesskey => "n", -title => "Alt-n"}, "next");
5314                        $paging_nav .= " &sdot; $next_link";
5315                } else {
5316                        $paging_nav .= " &sdot; next";
5317                }
5318
5319                if ($#commitlist >= 100) {
5320                }
5321
5322                git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
5323                git_print_header_div('commit', esc_html($co{'title'}), $hash);
5324                git_search_grep_body(\@commitlist, 0, 99, $next_link);
5325        }
5326
5327        if ($searchtype eq 'pickaxe') {
5328                git_print_page_nav('','', $hash,$co{'tree'},$hash);
5329                git_print_header_div('commit', esc_html($co{'title'}), $hash);
5330
5331                print "<table class=\"pickaxe search\">\n";
5332                my $alternate = 1;
5333                $/ = "\n";
5334                open my $fd, '-|', git_cmd(), '--no-pager', 'log', @diff_opts,
5335                        '--pretty=format:%H', '--no-abbrev', '--raw', "-S$searchtext",
5336                        ($search_use_regexp ? '--pickaxe-regex' : ());
5337                undef %co;
5338                my @files;
5339                while (my $line = <$fd>) {
5340                        chomp $line;
5341                        next unless $line;
5342
5343                        my %set = parse_difftree_raw_line($line);
5344                        if (defined $set{'commit'}) {
5345                                # finish previous commit
5346                                if (%co) {
5347                                        print "</td>\n" .
5348                                              "<td class=\"link\">" .
5349                                              $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
5350                                              " | " .
5351                                              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
5352                                        print "</td>\n" .
5353                                              "</tr>\n";
5354                                }
5355
5356                                if ($alternate) {
5357                                        print "<tr class=\"dark\">\n";
5358                                } else {
5359                                        print "<tr class=\"light\">\n";
5360                                }
5361                                $alternate ^= 1;
5362                                %co = parse_commit($set{'commit'});
5363                                my $author = chop_and_escape_str($co{'author_name'}, 15, 5);
5364                                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
5365                                      "<td><i>$author</i></td>\n" .
5366                                      "<td>" .
5367                                      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
5368                                              -class => "list subject"},
5369                                              chop_and_escape_str($co{'title'}, 50) . "<br/>");
5370                        } elsif (defined $set{'to_id'}) {
5371                                next if ($set{'to_id'} =~ m/^0{40}$/);
5372
5373                                print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
5374                                                             hash=>$set{'to_id'}, file_name=>$set{'to_file'}),
5375                                              -class => "list"},
5376                                              "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
5377                                      "<br/>\n";
5378                        }
5379                }
5380                close $fd;
5381
5382                # finish last commit (warning: repetition!)
5383                if (%co) {
5384                        print "</td>\n" .
5385                              "<td class=\"link\">" .
5386                              $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
5387                              " | " .
5388                              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
5389                        print "</td>\n" .
5390                              "</tr>\n";
5391                }
5392
5393                print "</table>\n";
5394        }
5395
5396        if ($searchtype eq 'grep') {
5397                git_print_page_nav('','', $hash,$co{'tree'},$hash);
5398                git_print_header_div('commit', esc_html($co{'title'}), $hash);
5399
5400                print "<table class=\"grep_search\">\n";
5401                my $alternate = 1;
5402                my $matches = 0;
5403                $/ = "\n";
5404                open my $fd, "-|", git_cmd(), 'grep', '-n',
5405                        $search_use_regexp ? ('-E', '-i') : '-F',
5406                        $searchtext, $co{'tree'};
5407                my $lastfile = '';
5408                while (my $line = <$fd>) {
5409                        chomp $line;
5410                        my ($file, $lno, $ltext, $binary);
5411                        last if ($matches++ > 1000);
5412                        if ($line =~ /^Binary file (.+) matches$/) {
5413                                $file = $1;
5414                                $binary = 1;
5415                        } else {
5416                                (undef, $file, $lno, $ltext) = split(/:/, $line, 4);
5417                        }
5418                        if ($file ne $lastfile) {
5419                                $lastfile and print "</td></tr>\n";
5420                                if ($alternate++) {
5421                                        print "<tr class=\"dark\">\n";
5422                                } else {
5423                                        print "<tr class=\"light\">\n";
5424                                }
5425                                print "<td class=\"list\">".
5426                                        $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
5427                                                               file_name=>"$file"),
5428                                                -class => "list"}, esc_path($file));
5429                                print "</td><td>\n";
5430                                $lastfile = $file;
5431                        }
5432                        if ($binary) {
5433                                print "<div class=\"binary\">Binary file</div>\n";
5434                        } else {
5435                                $ltext = untabify($ltext);
5436                                if ($ltext =~ m/^(.*)($search_regexp)(.*)$/i) {
5437                                        $ltext = esc_html($1, -nbsp=>1);
5438                                        $ltext .= '<span class="match">';
5439                                        $ltext .= esc_html($2, -nbsp=>1);
5440                                        $ltext .= '</span>';
5441                                        $ltext .= esc_html($3, -nbsp=>1);
5442                                } else {
5443                                        $ltext = esc_html($ltext, -nbsp=>1);
5444                                }
5445                                print "<div class=\"pre\">" .
5446                                        $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
5447                                                               file_name=>"$file").'#l'.$lno,
5448                                                -class => "linenr"}, sprintf('%4i', $lno))
5449                                        . ' ' .  $ltext . "</div>\n";
5450                        }
5451                }
5452                if ($lastfile) {
5453                        print "</td></tr>\n";
5454                        if ($matches > 1000) {
5455                                print "<div class=\"diff nodifferences\">Too many matches, listing trimmed</div>\n";
5456                        }
5457                } else {
5458                        print "<div class=\"diff nodifferences\">No matches found</div>\n";
5459                }
5460                close $fd;
5461
5462                print "</table>\n";
5463        }
5464        git_footer_html();
5465}
5466
5467sub git_search_help {
5468        git_header_html();
5469        git_print_page_nav('','', $hash,$hash,$hash);
5470        print <<EOT;
5471<p><strong>Pattern</strong> is by default a normal string that is matched precisely (but without
5472regard to case, except in the case of pickaxe). However, when you check the <em>re</em> checkbox,
5473the pattern entered is recognized as the POSIX extended
5474<a href="http://en.wikipedia.org/wiki/Regular_expression">regular expression</a> (also case
5475insensitive).</p>
5476<dl>
5477<dt><b>commit</b></dt>
5478<dd>The commit messages and authorship information will be scanned for the given pattern.</dd>
5479EOT
5480        my ($have_grep) = gitweb_check_feature('grep');
5481        if ($have_grep) {
5482                print <<EOT;
5483<dt><b>grep</b></dt>
5484<dd>All files in the currently selected tree (HEAD unless you are explicitly browsing
5485    a different one) are searched for the given pattern. On large trees, this search can take
5486a while and put some strain on the server, so please use it with some consideration. Note that
5487due to git-grep peculiarity, currently if regexp mode is turned off, the matches are
5488case-sensitive.</dd>
5489EOT
5490        }
5491        print <<EOT;
5492<dt><b>author</b></dt>
5493<dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given pattern.</dd>
5494<dt><b>committer</b></dt>
5495<dd>Name and e-mail of the committer and date of commit will be scanned for the given pattern.</dd>
5496EOT
5497        my ($have_pickaxe) = gitweb_check_feature('pickaxe');
5498        if ($have_pickaxe) {
5499                print <<EOT;
5500<dt><b>pickaxe</b></dt>
5501<dd>All commits that caused the string to appear or disappear from any file (changes that
5502added, removed or "modified" the string) will be listed. This search can take a while and
5503takes a lot of strain on the server, so please use it wisely. Note that since you may be
5504interested even in changes just changing the case as well, this search is case sensitive.</dd>
5505EOT
5506        }
5507        print "</dl>\n";
5508        git_footer_html();
5509}
5510
5511sub git_shortlog {
5512        my $head = git_get_head_hash($project);
5513        if (!defined $hash) {
5514                $hash = $head;
5515        }
5516        if (!defined $page) {
5517                $page = 0;
5518        }
5519        my $refs = git_get_references();
5520
5521        my @commitlist = parse_commits($hash, 101, (100 * $page));
5522
5523        my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, $#commitlist >= 100);
5524        my $next_link = '';
5525        if ($#commitlist >= 100) {
5526                $next_link =
5527                        $cgi->a({-href => href(-replay=>1, page=>$page+1),
5528                                 -accesskey => "n", -title => "Alt-n"}, "next");
5529        }
5530
5531        git_header_html();
5532        git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
5533        git_print_header_div('summary', $project);
5534
5535        git_shortlog_body(\@commitlist, 0, 99, $refs, $next_link);
5536
5537        git_footer_html();
5538}
5539
5540## ......................................................................
5541## feeds (RSS, Atom; OPML)
5542
5543sub git_feed {
5544        my $format = shift || 'atom';
5545        my ($have_blame) = gitweb_check_feature('blame');
5546
5547        # Atom: http://www.atomenabled.org/developers/syndication/
5548        # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
5549        if ($format ne 'rss' && $format ne 'atom') {
5550                die_error(undef, "Unknown web feed format");
5551        }
5552
5553        # log/feed of current (HEAD) branch, log of given branch, history of file/directory
5554        my $head = $hash || 'HEAD';
5555        my @commitlist = parse_commits($head, 150, 0, $file_name);
5556
5557        my %latest_commit;
5558        my %latest_date;
5559        my $content_type = "application/$format+xml";
5560        if (defined $cgi->http('HTTP_ACCEPT') &&
5561                 $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
5562                # browser (feed reader) prefers text/xml
5563                $content_type = 'text/xml';
5564        }
5565        if (defined($commitlist[0])) {
5566                %latest_commit = %{$commitlist[0]};
5567                %latest_date   = parse_date($latest_commit{'author_epoch'});
5568                print $cgi->header(
5569                        -type => $content_type,
5570                        -charset => 'utf-8',
5571                        -last_modified => $latest_date{'rfc2822'});
5572        } else {
5573                print $cgi->header(
5574                        -type => $content_type,
5575                        -charset => 'utf-8');
5576        }
5577
5578        # Optimization: skip generating the body if client asks only
5579        # for Last-Modified date.
5580        return if ($cgi->request_method() eq 'HEAD');
5581
5582        # header variables
5583        my $title = "$site_name - $project/$action";
5584        my $feed_type = 'log';
5585        if (defined $hash) {
5586                $title .= " - '$hash'";
5587                $feed_type = 'branch log';
5588                if (defined $file_name) {
5589                        $title .= " :: $file_name";
5590                        $feed_type = 'history';
5591                }
5592        } elsif (defined $file_name) {
5593                $title .= " - $file_name";
5594                $feed_type = 'history';
5595        }
5596        $title .= " $feed_type";
5597        my $descr = git_get_project_description($project);
5598        if (defined $descr) {
5599                $descr = esc_html($descr);
5600        } else {
5601                $descr = "$project " .
5602                         ($format eq 'rss' ? 'RSS' : 'Atom') .
5603                         " feed";
5604        }
5605        my $owner = git_get_project_owner($project);
5606        $owner = esc_html($owner);
5607
5608        #header
5609        my $alt_url;
5610        if (defined $file_name) {
5611                $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
5612        } elsif (defined $hash) {
5613                $alt_url = href(-full=>1, action=>"log", hash=>$hash);
5614        } else {
5615                $alt_url = href(-full=>1, action=>"summary");
5616        }
5617        print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
5618        if ($format eq 'rss') {
5619                print <<XML;
5620<rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
5621<channel>
5622XML
5623                print "<title>$title</title>\n" .
5624                      "<link>$alt_url</link>\n" .
5625                      "<description>$descr</description>\n" .
5626                      "<language>en</language>\n";
5627        } elsif ($format eq 'atom') {
5628                print <<XML;
5629<feed xmlns="http://www.w3.org/2005/Atom">
5630XML
5631                print "<title>$title</title>\n" .
5632                      "<subtitle>$descr</subtitle>\n" .
5633                      '<link rel="alternate" type="text/html" href="' .
5634                      $alt_url . '" />' . "\n" .
5635                      '<link rel="self" type="' . $content_type . '" href="' .
5636                      $cgi->self_url() . '" />' . "\n" .
5637                      "<id>" . href(-full=>1) . "</id>\n" .
5638                      # use project owner for feed author
5639                      "<author><name>$owner</name></author>\n";
5640                if (defined $favicon) {
5641                        print "<icon>" . esc_url($favicon) . "</icon>\n";
5642                }
5643                if (defined $logo_url) {
5644                        # not twice as wide as tall: 72 x 27 pixels
5645                        print "<logo>" . esc_url($logo) . "</logo>\n";
5646                }
5647                if (! %latest_date) {
5648                        # dummy date to keep the feed valid until commits trickle in:
5649                        print "<updated>1970-01-01T00:00:00Z</updated>\n";
5650                } else {
5651                        print "<updated>$latest_date{'iso-8601'}</updated>\n";
5652                }
5653        }
5654
5655        # contents
5656        for (my $i = 0; $i <= $#commitlist; $i++) {
5657                my %co = %{$commitlist[$i]};
5658                my $commit = $co{'id'};
5659                # we read 150, we always show 30 and the ones more recent than 48 hours
5660                if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
5661                        last;
5662                }
5663                my %cd = parse_date($co{'author_epoch'});
5664
5665                # get list of changed files
5666                open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
5667                        $co{'parent'} || "--root",
5668                        $co{'id'}, "--", (defined $file_name ? $file_name : ())
5669                        or next;
5670                my @difftree = map { chomp; $_ } <$fd>;
5671                close $fd
5672                        or next;
5673
5674                # print element (entry, item)
5675                my $co_url = href(-full=>1, action=>"commitdiff", hash=>$commit);
5676                if ($format eq 'rss') {
5677                        print "<item>\n" .
5678                              "<title>" . esc_html($co{'title'}) . "</title>\n" .
5679                              "<author>" . esc_html($co{'author'}) . "</author>\n" .
5680                              "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
5681                              "<guid isPermaLink=\"true\">$co_url</guid>\n" .
5682                              "<link>$co_url</link>\n" .
5683                              "<description>" . esc_html($co{'title'}) . "</description>\n" .
5684                              "<content:encoded>" .
5685                              "<![CDATA[\n";
5686                } elsif ($format eq 'atom') {
5687                        print "<entry>\n" .
5688                              "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
5689                              "<updated>$cd{'iso-8601'}</updated>\n" .
5690                              "<author>\n" .
5691                              "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
5692                        if ($co{'author_email'}) {
5693                                print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
5694                        }
5695                        print "</author>\n" .
5696                              # use committer for contributor
5697                              "<contributor>\n" .
5698                              "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
5699                        if ($co{'committer_email'}) {
5700                                print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
5701                        }
5702                        print "</contributor>\n" .
5703                              "<published>$cd{'iso-8601'}</published>\n" .
5704                              "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
5705                              "<id>$co_url</id>\n" .
5706                              "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
5707                              "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
5708                }
5709                my $comment = $co{'comment'};
5710                print "<pre>\n";
5711                foreach my $line (@$comment) {
5712                        $line = esc_html($line);
5713                        print "$line\n";
5714                }
5715                print "</pre><ul>\n";
5716                foreach my $difftree_line (@difftree) {
5717                        my %difftree = parse_difftree_raw_line($difftree_line);
5718                        next if !$difftree{'from_id'};
5719
5720                        my $file = $difftree{'file'} || $difftree{'to_file'};
5721
5722                        print "<li>" .
5723                              "[" .
5724                              $cgi->a({-href => href(-full=>1, action=>"blobdiff",
5725                                                     hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
5726                                                     hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
5727                                                     file_name=>$file, file_parent=>$difftree{'from_file'}),
5728                                      -title => "diff"}, 'D');
5729                        if ($have_blame) {
5730                                print $cgi->a({-href => href(-full=>1, action=>"blame",
5731                                                             file_name=>$file, hash_base=>$commit),
5732                                              -title => "blame"}, 'B');
5733                        }
5734                        # if this is not a feed of a file history
5735                        if (!defined $file_name || $file_name ne $file) {
5736                                print $cgi->a({-href => href(-full=>1, action=>"history",
5737                                                             file_name=>$file, hash=>$commit),
5738                                              -title => "history"}, 'H');
5739                        }
5740                        $file = esc_path($file);
5741                        print "] ".
5742                              "$file</li>\n";
5743                }
5744                if ($format eq 'rss') {
5745                        print "</ul>]]>\n" .
5746                              "</content:encoded>\n" .
5747                              "</item>\n";
5748                } elsif ($format eq 'atom') {
5749                        print "</ul>\n</div>\n" .
5750                              "</content>\n" .
5751                              "</entry>\n";
5752                }
5753        }
5754
5755        # end of feed
5756        if ($format eq 'rss') {
5757                print "</channel>\n</rss>\n";
5758        }       elsif ($format eq 'atom') {
5759                print "</feed>\n";
5760        }
5761}
5762
5763sub git_rss {
5764        git_feed('rss');
5765}
5766
5767sub git_atom {
5768        git_feed('atom');
5769}
5770
5771sub git_opml {
5772        my @list = git_get_projects_list();
5773
5774        print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
5775        print <<XML;
5776<?xml version="1.0" encoding="utf-8"?>
5777<opml version="1.0">
5778<head>
5779  <title>$site_name OPML Export</title>
5780</head>
5781<body>
5782<outline text="git RSS feeds">
5783XML
5784
5785        foreach my $pr (@list) {
5786                my %proj = %$pr;
5787                my $head = git_get_head_hash($proj{'path'});
5788                if (!defined $head) {
5789                        next;
5790                }
5791                $git_dir = "$projectroot/$proj{'path'}";
5792                my %co = parse_commit($head);
5793                if (!%co) {
5794                        next;
5795                }
5796
5797                my $path = esc_html(chop_str($proj{'path'}, 25, 5));
5798                my $rss  = "$my_url?p=$proj{'path'};a=rss";
5799                my $html = "$my_url?p=$proj{'path'};a=summary";
5800                print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
5801        }
5802        print <<XML;
5803</outline>
5804</body>
5805</opml>
5806XML
5807}