9061c4a75e6b491686aa3906adc4352d6145f2ae
   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
  21our $cgi = new CGI;
  22our $version = "++GIT_VERSION++";
  23our $my_url = $cgi->url();
  24our $my_uri = $cgi->url(-absolute => 1);
  25
  26# core git executable to use
  27# this can just be "git" if your webserver has a sensible PATH
  28our $GIT = "++GIT_BINDIR++/git";
  29
  30# absolute fs-path which will be prepended to the project path
  31#our $projectroot = "/pub/scm";
  32our $projectroot = "++GITWEB_PROJECTROOT++";
  33
  34# target of the home link on top of all pages
  35our $home_link = $my_uri || "/";
  36
  37# string of the home link on top of all pages
  38our $home_link_str = "++GITWEB_HOME_LINK_STR++";
  39
  40# name of your site or organization to appear in page titles
  41# replace this with something more descriptive for clearer bookmarks
  42our $site_name = "++GITWEB_SITENAME++"
  43                 || ($ENV{'SERVER_NAME'} || "Untitled") . " Git";
  44
  45# filename of html text to include at top of each page
  46our $site_header = "++GITWEB_SITE_HEADER++";
  47# html text to include at home page
  48our $home_text = "++GITWEB_HOMETEXT++";
  49# filename of html text to include at bottom of each page
  50our $site_footer = "++GITWEB_SITE_FOOTER++";
  51
  52# URI of stylesheets
  53our @stylesheets = ("++GITWEB_CSS++");
  54# URI of a single stylesheet, which can be overridden in GITWEB_CONFIG.
  55our $stylesheet = undef;
  56# URI of GIT logo (72x27 size)
  57our $logo = "++GITWEB_LOGO++";
  58# URI of GIT favicon, assumed to be image/png type
  59our $favicon = "++GITWEB_FAVICON++";
  60
  61# URI and label (title) of GIT logo link
  62#our $logo_url = "http://www.kernel.org/pub/software/scm/git/docs/";
  63#our $logo_label = "git documentation";
  64our $logo_url = "http://git.or.cz/";
  65our $logo_label = "git homepage";
  66
  67# source of projects list
  68our $projects_list = "++GITWEB_LIST++";
  69
  70# show repository only if this file exists
  71# (only effective if this variable evaluates to true)
  72our $export_ok = "++GITWEB_EXPORT_OK++";
  73
  74# only allow viewing of repositories also shown on the overview page
  75our $strict_export = "++GITWEB_STRICT_EXPORT++";
  76
  77# list of git base URLs used for URL to where fetch project from,
  78# i.e. full URL is "$git_base_url/$project"
  79our @git_base_url_list = grep { $_ ne '' } ("++GITWEB_BASE_URL++");
  80
  81# default blob_plain mimetype and default charset for text/plain blob
  82our $default_blob_plain_mimetype = 'text/plain';
  83our $default_text_plain_charset  = undef;
  84
  85# file to use for guessing MIME types before trying /etc/mime.types
  86# (relative to the current git repository)
  87our $mimetypes_file = undef;
  88
  89# You define site-wide feature defaults here; override them with
  90# $GITWEB_CONFIG as necessary.
  91our %feature = (
  92        # feature => {
  93        #       'sub' => feature-sub (subroutine),
  94        #       'override' => allow-override (boolean),
  95        #       'default' => [ default options...] (array reference)}
  96        #
  97        # if feature is overridable (it means that allow-override has true value,
  98        # then feature-sub will be called with default options as parameters;
  99        # return value of feature-sub indicates if to enable specified feature
 100        #
 101        # use gitweb_check_feature(<feature>) to check if <feature> is enabled
 102
 103        # Enable the 'blame' blob view, showing the last commit that modified
 104        # each line in the file. This can be very CPU-intensive.
 105
 106        # To enable system wide have in $GITWEB_CONFIG
 107        # $feature{'blame'}{'default'} = [1];
 108        # To have project specific config enable override in $GITWEB_CONFIG
 109        # $feature{'blame'}{'override'} = 1;
 110        # and in project config gitweb.blame = 0|1;
 111        'blame' => {
 112                'sub' => \&feature_blame,
 113                'override' => 0,
 114                'default' => [0]},
 115
 116        # Enable the 'snapshot' link, providing a compressed tarball of any
 117        # tree. This can potentially generate high traffic if you have large
 118        # project.
 119
 120        # To disable system wide have in $GITWEB_CONFIG
 121        # $feature{'snapshot'}{'default'} = [undef];
 122        # To have project specific config enable override in $GITWEB_CONFIG
 123        # $feature{'snapshot'}{'override'} = 1;
 124        # and in project config gitweb.snapshot = none|gzip|bzip2;
 125        'snapshot' => {
 126                'sub' => \&feature_snapshot,
 127                'override' => 0,
 128                #         => [content-encoding, suffix, program]
 129                'default' => ['x-gzip', 'gz', 'gzip']},
 130
 131        # Enable the pickaxe search, which will list the commits that modified
 132        # a given string in a file. This can be practical and quite faster
 133        # alternative to 'blame', but still potentially CPU-intensive.
 134
 135        # To enable system wide have in $GITWEB_CONFIG
 136        # $feature{'pickaxe'}{'default'} = [1];
 137        # To have project specific config enable override in $GITWEB_CONFIG
 138        # $feature{'pickaxe'}{'override'} = 1;
 139        # and in project config gitweb.pickaxe = 0|1;
 140        'pickaxe' => {
 141                'sub' => \&feature_pickaxe,
 142                'override' => 0,
 143                'default' => [1]},
 144
 145        # Make gitweb use an alternative format of the URLs which can be
 146        # more readable and natural-looking: project name is embedded
 147        # directly in the path and the query string contains other
 148        # auxiliary information. All gitweb installations recognize
 149        # URL in either format; this configures in which formats gitweb
 150        # generates links.
 151
 152        # To enable system wide have in $GITWEB_CONFIG
 153        # $feature{'pathinfo'}{'default'} = [1];
 154        # Project specific override is not supported.
 155
 156        # Note that you will need to change the default location of CSS,
 157        # favicon, logo and possibly other files to an absolute URL. Also,
 158        # if gitweb.cgi serves as your indexfile, you will need to force
 159        # $my_uri to contain the script name in your $GITWEB_CONFIG.
 160        'pathinfo' => {
 161                'override' => 0,
 162                'default' => [0]},
 163
 164        # Make gitweb consider projects in project root subdirectories
 165        # to be forks of existing projects. Given project $projname.git,
 166        # projects matching $projname/*.git will not be shown in the main
 167        # projects list, instead a '+' mark will be added to $projname
 168        # there and a 'forks' view will be enabled for the project, listing
 169        # all the forks. This feature is supported only if project list
 170        # is taken from a directory, not file.
 171
 172        # To enable system wide have in $GITWEB_CONFIG
 173        # $feature{'forks'}{'default'} = [1];
 174        # Project specific override is not supported.
 175        'forks' => {
 176                'override' => 0,
 177                'default' => [0]},
 178);
 179
 180sub gitweb_check_feature {
 181        my ($name) = @_;
 182        return unless exists $feature{$name};
 183        my ($sub, $override, @defaults) = (
 184                $feature{$name}{'sub'},
 185                $feature{$name}{'override'},
 186                @{$feature{$name}{'default'}});
 187        if (!$override) { return @defaults; }
 188        if (!defined $sub) {
 189                warn "feature $name is not overrideable";
 190                return @defaults;
 191        }
 192        return $sub->(@defaults);
 193}
 194
 195sub feature_blame {
 196        my ($val) = git_get_project_config('blame', '--bool');
 197
 198        if ($val eq 'true') {
 199                return 1;
 200        } elsif ($val eq 'false') {
 201                return 0;
 202        }
 203
 204        return $_[0];
 205}
 206
 207sub feature_snapshot {
 208        my ($ctype, $suffix, $command) = @_;
 209
 210        my ($val) = git_get_project_config('snapshot');
 211
 212        if ($val eq 'gzip') {
 213                return ('x-gzip', 'gz', 'gzip');
 214        } elsif ($val eq 'bzip2') {
 215                return ('x-bzip2', 'bz2', 'bzip2');
 216        } elsif ($val eq 'none') {
 217                return ();
 218        }
 219
 220        return ($ctype, $suffix, $command);
 221}
 222
 223sub gitweb_have_snapshot {
 224        my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
 225        my $have_snapshot = (defined $ctype && defined $suffix);
 226
 227        return $have_snapshot;
 228}
 229
 230sub feature_pickaxe {
 231        my ($val) = git_get_project_config('pickaxe', '--bool');
 232
 233        if ($val eq 'true') {
 234                return (1);
 235        } elsif ($val eq 'false') {
 236                return (0);
 237        }
 238
 239        return ($_[0]);
 240}
 241
 242# checking HEAD file with -e is fragile if the repository was
 243# initialized long time ago (i.e. symlink HEAD) and was pack-ref'ed
 244# and then pruned.
 245sub check_head_link {
 246        my ($dir) = @_;
 247        my $headfile = "$dir/HEAD";
 248        return ((-e $headfile) ||
 249                (-l $headfile && readlink($headfile) =~ /^refs\/heads\//));
 250}
 251
 252sub check_export_ok {
 253        my ($dir) = @_;
 254        return (check_head_link($dir) &&
 255                (!$export_ok || -e "$dir/$export_ok"));
 256}
 257
 258# rename detection options for git-diff and git-diff-tree
 259# - default is '-M', with the cost proportional to
 260#   (number of removed files) * (number of new files).
 261# - more costly is '-C' (or '-C', '-M'), with the cost proportional to
 262#   (number of changed files + number of removed files) * (number of new files)
 263# - even more costly is '-C', '--find-copies-harder' with cost
 264#   (number of files in the original tree) * (number of new files)
 265# - one might want to include '-B' option, e.g. '-B', '-M'
 266our @diff_opts = ('-M'); # taken from git_commit
 267
 268our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 269do $GITWEB_CONFIG if -e $GITWEB_CONFIG;
 270
 271# version of the core git binary
 272our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 273
 274$projects_list ||= $projectroot;
 275
 276# ======================================================================
 277# input validation and dispatch
 278our $action = $cgi->param('a');
 279if (defined $action) {
 280        if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 281                die_error(undef, "Invalid action parameter");
 282        }
 283}
 284
 285# parameters which are pathnames
 286our $project = $cgi->param('p');
 287if (defined $project) {
 288        if (!validate_pathname($project) ||
 289            !(-d "$projectroot/$project") ||
 290            !check_head_link("$projectroot/$project") ||
 291            ($export_ok && !(-e "$projectroot/$project/$export_ok")) ||
 292            ($strict_export && !project_in_list($project))) {
 293                undef $project;
 294                die_error(undef, "No such project");
 295        }
 296}
 297
 298our $file_name = $cgi->param('f');
 299if (defined $file_name) {
 300        if (!validate_pathname($file_name)) {
 301                die_error(undef, "Invalid file parameter");
 302        }
 303}
 304
 305our $file_parent = $cgi->param('fp');
 306if (defined $file_parent) {
 307        if (!validate_pathname($file_parent)) {
 308                die_error(undef, "Invalid file parent parameter");
 309        }
 310}
 311
 312# parameters which are refnames
 313our $hash = $cgi->param('h');
 314if (defined $hash) {
 315        if (!validate_refname($hash)) {
 316                die_error(undef, "Invalid hash parameter");
 317        }
 318}
 319
 320our $hash_parent = $cgi->param('hp');
 321if (defined $hash_parent) {
 322        if (!validate_refname($hash_parent)) {
 323                die_error(undef, "Invalid hash parent parameter");
 324        }
 325}
 326
 327our $hash_base = $cgi->param('hb');
 328if (defined $hash_base) {
 329        if (!validate_refname($hash_base)) {
 330                die_error(undef, "Invalid hash base parameter");
 331        }
 332}
 333
 334our $hash_parent_base = $cgi->param('hpb');
 335if (defined $hash_parent_base) {
 336        if (!validate_refname($hash_parent_base)) {
 337                die_error(undef, "Invalid hash parent base parameter");
 338        }
 339}
 340
 341# other parameters
 342our $page = $cgi->param('pg');
 343if (defined $page) {
 344        if ($page =~ m/[^0-9]/) {
 345                die_error(undef, "Invalid page parameter");
 346        }
 347}
 348
 349our $searchtext = $cgi->param('s');
 350if (defined $searchtext) {
 351        if ($searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 352                die_error(undef, "Invalid search parameter");
 353        }
 354        if (length($searchtext) < 2) {
 355                die_error(undef, "At least two characters are required for search parameter");
 356        }
 357        $searchtext = quotemeta $searchtext;
 358}
 359
 360our $searchtype = $cgi->param('st');
 361if (defined $searchtype) {
 362        if ($searchtype =~ m/[^a-z]/) {
 363                die_error(undef, "Invalid searchtype parameter");
 364        }
 365}
 366
 367# now read PATH_INFO and use it as alternative to parameters
 368sub evaluate_path_info {
 369        return if defined $project;
 370        my $path_info = $ENV{"PATH_INFO"};
 371        return if !$path_info;
 372        $path_info =~ s,^/+,,;
 373        return if !$path_info;
 374        # find which part of PATH_INFO is project
 375        $project = $path_info;
 376        $project =~ s,/+$,,;
 377        while ($project && !check_head_link("$projectroot/$project")) {
 378                $project =~ s,/*[^/]*$,,;
 379        }
 380        # validate project
 381        $project = validate_pathname($project);
 382        if (!$project ||
 383            ($export_ok && !-e "$projectroot/$project/$export_ok") ||
 384            ($strict_export && !project_in_list($project))) {
 385                undef $project;
 386                return;
 387        }
 388        # do not change any parameters if an action is given using the query string
 389        return if $action;
 390        $path_info =~ s,^$project/*,,;
 391        my ($refname, $pathname) = split(/:/, $path_info, 2);
 392        if (defined $pathname) {
 393                # we got "project.git/branch:filename" or "project.git/branch:dir/"
 394                # we could use git_get_type(branch:pathname), but it needs $git_dir
 395                $pathname =~ s,^/+,,;
 396                if (!$pathname || substr($pathname, -1) eq "/") {
 397                        $action  ||= "tree";
 398                        $pathname =~ s,/$,,;
 399                } else {
 400                        $action  ||= "blob_plain";
 401                }
 402                $hash_base ||= validate_refname($refname);
 403                $file_name ||= validate_pathname($pathname);
 404        } elsif (defined $refname) {
 405                # we got "project.git/branch"
 406                $action ||= "shortlog";
 407                $hash   ||= validate_refname($refname);
 408        }
 409}
 410evaluate_path_info();
 411
 412# path to the current git repository
 413our $git_dir;
 414$git_dir = "$projectroot/$project" if $project;
 415
 416# dispatch
 417my %actions = (
 418        "blame" => \&git_blame2,
 419        "blobdiff" => \&git_blobdiff,
 420        "blobdiff_plain" => \&git_blobdiff_plain,
 421        "blob" => \&git_blob,
 422        "blob_plain" => \&git_blob_plain,
 423        "commitdiff" => \&git_commitdiff,
 424        "commitdiff_plain" => \&git_commitdiff_plain,
 425        "commit" => \&git_commit,
 426        "forks" => \&git_forks,
 427        "heads" => \&git_heads,
 428        "history" => \&git_history,
 429        "log" => \&git_log,
 430        "rss" => \&git_rss,
 431        "atom" => \&git_atom,
 432        "search" => \&git_search,
 433        "search_help" => \&git_search_help,
 434        "shortlog" => \&git_shortlog,
 435        "summary" => \&git_summary,
 436        "tag" => \&git_tag,
 437        "tags" => \&git_tags,
 438        "tree" => \&git_tree,
 439        "snapshot" => \&git_snapshot,
 440        "object" => \&git_object,
 441        # those below don't need $project
 442        "opml" => \&git_opml,
 443        "project_list" => \&git_project_list,
 444        "project_index" => \&git_project_index,
 445);
 446
 447if (defined $project) {
 448        $action ||= 'summary';
 449} else {
 450        $action ||= 'project_list';
 451}
 452if (!defined($actions{$action})) {
 453        die_error(undef, "Unknown action");
 454}
 455if ($action !~ m/^(opml|project_list|project_index)$/ &&
 456    !$project) {
 457        die_error(undef, "Project needed");
 458}
 459$actions{$action}->();
 460exit;
 461
 462## ======================================================================
 463## action links
 464
 465sub href(%) {
 466        my %params = @_;
 467        # default is to use -absolute url() i.e. $my_uri
 468        my $href = $params{-full} ? $my_url : $my_uri;
 469
 470        # XXX: Warning: If you touch this, check the search form for updating,
 471        # too.
 472
 473        my @mapping = (
 474                project => "p",
 475                action => "a",
 476                file_name => "f",
 477                file_parent => "fp",
 478                hash => "h",
 479                hash_parent => "hp",
 480                hash_base => "hb",
 481                hash_parent_base => "hpb",
 482                page => "pg",
 483                order => "o",
 484                searchtext => "s",
 485                searchtype => "st",
 486        );
 487        my %mapping = @mapping;
 488
 489        $params{'project'} = $project unless exists $params{'project'};
 490
 491        my ($use_pathinfo) = gitweb_check_feature('pathinfo');
 492        if ($use_pathinfo) {
 493                # use PATH_INFO for project name
 494                $href .= "/$params{'project'}" if defined $params{'project'};
 495                delete $params{'project'};
 496
 497                # Summary just uses the project path URL
 498                if (defined $params{'action'} && $params{'action'} eq 'summary') {
 499                        delete $params{'action'};
 500                }
 501        }
 502
 503        # now encode the parameters explicitly
 504        my @result = ();
 505        for (my $i = 0; $i < @mapping; $i += 2) {
 506                my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 507                if (defined $params{$name}) {
 508                        push @result, $symbol . "=" . esc_param($params{$name});
 509                }
 510        }
 511        $href .= "?" . join(';', @result) if scalar @result;
 512
 513        return $href;
 514}
 515
 516
 517## ======================================================================
 518## validation, quoting/unquoting and escaping
 519
 520sub validate_pathname {
 521        my $input = shift || return undef;
 522
 523        # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 524        # at the beginning, at the end, and between slashes.
 525        # also this catches doubled slashes
 526        if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 527                return undef;
 528        }
 529        # no null characters
 530        if ($input =~ m!\0!) {
 531                return undef;
 532        }
 533        return $input;
 534}
 535
 536sub validate_refname {
 537        my $input = shift || return undef;
 538
 539        # textual hashes are O.K.
 540        if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 541                return $input;
 542        }
 543        # it must be correct pathname
 544        $input = validate_pathname($input)
 545                or return undef;
 546        # restrictions on ref name according to git-check-ref-format
 547        if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 548                return undef;
 549        }
 550        return $input;
 551}
 552
 553# very thin wrapper for decode("utf8", $str, Encode::FB_DEFAULT);
 554sub to_utf8 {
 555        my $str = shift;
 556        return decode("utf8", $str, Encode::FB_DEFAULT);
 557}
 558
 559# quote unsafe chars, but keep the slash, even when it's not
 560# correct, but quoted slashes look too horrible in bookmarks
 561sub esc_param {
 562        my $str = shift;
 563        $str =~ s/([^A-Za-z0-9\-_.~()\/:@])/sprintf("%%%02X", ord($1))/eg;
 564        $str =~ s/\+/%2B/g;
 565        $str =~ s/ /\+/g;
 566        return $str;
 567}
 568
 569# quote unsafe chars in whole URL, so some charactrs cannot be quoted
 570sub esc_url {
 571        my $str = shift;
 572        $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 573        $str =~ s/\+/%2B/g;
 574        $str =~ s/ /\+/g;
 575        return $str;
 576}
 577
 578# replace invalid utf8 character with SUBSTITUTION sequence
 579sub esc_html ($;%) {
 580        my $str = shift;
 581        my %opts = @_;
 582
 583        $str = to_utf8($str);
 584        $str = escapeHTML($str);
 585        if ($opts{'-nbsp'}) {
 586                $str =~ s/ /&nbsp;/g;
 587        }
 588        $str =~ s|([[:cntrl:]])|(($1 ne "\t") ? quot_cec($1) : $1)|eg;
 589        return $str;
 590}
 591
 592# quote control characters and escape filename to HTML
 593sub esc_path {
 594        my $str = shift;
 595        my %opts = @_;
 596
 597        $str = to_utf8($str);
 598        $str = escapeHTML($str);
 599        if ($opts{'-nbsp'}) {
 600                $str =~ s/ /&nbsp;/g;
 601        }
 602        $str =~ s|([[:cntrl:]])|quot_cec($1)|eg;
 603        return $str;
 604}
 605
 606# Make control characters "printable", using character escape codes (CEC)
 607sub quot_cec {
 608        my $cntrl = shift;
 609        my %es = ( # character escape codes, aka escape sequences
 610                   "\t" => '\t',   # tab            (HT)
 611                   "\n" => '\n',   # line feed      (LF)
 612                   "\r" => '\r',   # carrige return (CR)
 613                   "\f" => '\f',   # form feed      (FF)
 614                   "\b" => '\b',   # backspace      (BS)
 615                   "\a" => '\a',   # alarm (bell)   (BEL)
 616                   "\e" => '\e',   # escape         (ESC)
 617                   "\013" => '\v', # vertical tab   (VT)
 618                   "\000" => '\0', # nul character  (NUL)
 619                   );
 620        my $chr = ( (exists $es{$cntrl})
 621                    ? $es{$cntrl}
 622                    : sprintf('\%03o', ord($cntrl)) );
 623        return "<span class=\"cntrl\">$chr</span>";
 624}
 625
 626# Alternatively use unicode control pictures codepoints,
 627# Unicode "printable representation" (PR)
 628sub quot_upr {
 629        my $cntrl = shift;
 630        my $chr = sprintf('&#%04d;', 0x2400+ord($cntrl));
 631        return "<span class=\"cntrl\">$chr</span>";
 632}
 633
 634# git may return quoted and escaped filenames
 635sub unquote {
 636        my $str = shift;
 637
 638        sub unq {
 639                my $seq = shift;
 640                my %es = ( # character escape codes, aka escape sequences
 641                        't' => "\t",   # tab            (HT, TAB)
 642                        'n' => "\n",   # newline        (NL)
 643                        'r' => "\r",   # return         (CR)
 644                        'f' => "\f",   # form feed      (FF)
 645                        'b' => "\b",   # backspace      (BS)
 646                        'a' => "\a",   # alarm (bell)   (BEL)
 647                        'e' => "\e",   # escape         (ESC)
 648                        'v' => "\013", # vertical tab   (VT)
 649                );
 650
 651                if ($seq =~ m/^[0-7]{1,3}$/) {
 652                        # octal char sequence
 653                        return chr(oct($seq));
 654                } elsif (exists $es{$seq}) {
 655                        # C escape sequence, aka character escape code
 656                        return $es{$seq}
 657                }
 658                # quoted ordinary character
 659                return $seq;
 660        }
 661
 662        if ($str =~ m/^"(.*)"$/) {
 663                # needs unquoting
 664                $str = $1;
 665                $str =~ s/\\([^0-7]|[0-7]{1,3})/unq($1)/eg;
 666        }
 667        return $str;
 668}
 669
 670# escape tabs (convert tabs to spaces)
 671sub untabify {
 672        my $line = shift;
 673
 674        while ((my $pos = index($line, "\t")) != -1) {
 675                if (my $count = (8 - ($pos % 8))) {
 676                        my $spaces = ' ' x $count;
 677                        $line =~ s/\t/$spaces/;
 678                }
 679        }
 680
 681        return $line;
 682}
 683
 684sub project_in_list {
 685        my $project = shift;
 686        my @list = git_get_projects_list();
 687        return @list && scalar(grep { $_->{'path'} eq $project } @list);
 688}
 689
 690## ----------------------------------------------------------------------
 691## HTML aware string manipulation
 692
 693sub chop_str {
 694        my $str = shift;
 695        my $len = shift;
 696        my $add_len = shift || 10;
 697
 698        # allow only $len chars, but don't cut a word if it would fit in $add_len
 699        # if it doesn't fit, cut it if it's still longer than the dots we would add
 700        $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 701        my $body = $1;
 702        my $tail = $2;
 703        if (length($tail) > 4) {
 704                $tail = " ...";
 705                $body =~ s/&[^;]*$//; # remove chopped character entities
 706        }
 707        return "$body$tail";
 708}
 709
 710## ----------------------------------------------------------------------
 711## functions returning short strings
 712
 713# CSS class for given age value (in seconds)
 714sub age_class {
 715        my $age = shift;
 716
 717        if ($age < 60*60*2) {
 718                return "age0";
 719        } elsif ($age < 60*60*24*2) {
 720                return "age1";
 721        } else {
 722                return "age2";
 723        }
 724}
 725
 726# convert age in seconds to "nn units ago" string
 727sub age_string {
 728        my $age = shift;
 729        my $age_str;
 730
 731        if ($age > 60*60*24*365*2) {
 732                $age_str = (int $age/60/60/24/365);
 733                $age_str .= " years ago";
 734        } elsif ($age > 60*60*24*(365/12)*2) {
 735                $age_str = int $age/60/60/24/(365/12);
 736                $age_str .= " months ago";
 737        } elsif ($age > 60*60*24*7*2) {
 738                $age_str = int $age/60/60/24/7;
 739                $age_str .= " weeks ago";
 740        } elsif ($age > 60*60*24*2) {
 741                $age_str = int $age/60/60/24;
 742                $age_str .= " days ago";
 743        } elsif ($age > 60*60*2) {
 744                $age_str = int $age/60/60;
 745                $age_str .= " hours ago";
 746        } elsif ($age > 60*2) {
 747                $age_str = int $age/60;
 748                $age_str .= " min ago";
 749        } elsif ($age > 2) {
 750                $age_str = int $age;
 751                $age_str .= " sec ago";
 752        } else {
 753                $age_str .= " right now";
 754        }
 755        return $age_str;
 756}
 757
 758# convert file mode in octal to symbolic file mode string
 759sub mode_str {
 760        my $mode = oct shift;
 761
 762        if (S_ISDIR($mode & S_IFMT)) {
 763                return 'drwxr-xr-x';
 764        } elsif (S_ISLNK($mode)) {
 765                return 'lrwxrwxrwx';
 766        } elsif (S_ISREG($mode)) {
 767                # git cares only about the executable bit
 768                if ($mode & S_IXUSR) {
 769                        return '-rwxr-xr-x';
 770                } else {
 771                        return '-rw-r--r--';
 772                };
 773        } else {
 774                return '----------';
 775        }
 776}
 777
 778# convert file mode in octal to file type string
 779sub file_type {
 780        my $mode = shift;
 781
 782        if ($mode !~ m/^[0-7]+$/) {
 783                return $mode;
 784        } else {
 785                $mode = oct $mode;
 786        }
 787
 788        if (S_ISDIR($mode & S_IFMT)) {
 789                return "directory";
 790        } elsif (S_ISLNK($mode)) {
 791                return "symlink";
 792        } elsif (S_ISREG($mode)) {
 793                return "file";
 794        } else {
 795                return "unknown";
 796        }
 797}
 798
 799# convert file mode in octal to file type description string
 800sub file_type_long {
 801        my $mode = shift;
 802
 803        if ($mode !~ m/^[0-7]+$/) {
 804                return $mode;
 805        } else {
 806                $mode = oct $mode;
 807        }
 808
 809        if (S_ISDIR($mode & S_IFMT)) {
 810                return "directory";
 811        } elsif (S_ISLNK($mode)) {
 812                return "symlink";
 813        } elsif (S_ISREG($mode)) {
 814                if ($mode & S_IXUSR) {
 815                        return "executable";
 816                } else {
 817                        return "file";
 818                };
 819        } else {
 820                return "unknown";
 821        }
 822}
 823
 824
 825## ----------------------------------------------------------------------
 826## functions returning short HTML fragments, or transforming HTML fragments
 827## which don't beling to other sections
 828
 829# format line of commit message.
 830sub format_log_line_html {
 831        my $line = shift;
 832
 833        $line = esc_html($line, -nbsp=>1);
 834        if ($line =~ m/([0-9a-fA-F]{8,40})/) {
 835                my $hash_text = $1;
 836                my $link =
 837                        $cgi->a({-href => href(action=>"object", hash=>$hash_text),
 838                                -class => "text"}, $hash_text);
 839                $line =~ s/$hash_text/$link/;
 840        }
 841        return $line;
 842}
 843
 844# format marker of refs pointing to given object
 845sub format_ref_marker {
 846        my ($refs, $id) = @_;
 847        my $markers = '';
 848
 849        if (defined $refs->{$id}) {
 850                foreach my $ref (@{$refs->{$id}}) {
 851                        my ($type, $name) = qw();
 852                        # e.g. tags/v2.6.11 or heads/next
 853                        if ($ref =~ m!^(.*?)s?/(.*)$!) {
 854                                $type = $1;
 855                                $name = $2;
 856                        } else {
 857                                $type = "ref";
 858                                $name = $ref;
 859                        }
 860
 861                        $markers .= " <span class=\"$type\" title=\"$ref\">" .
 862                                    esc_html($name) . "</span>";
 863                }
 864        }
 865
 866        if ($markers) {
 867                return ' <span class="refs">'. $markers . '</span>';
 868        } else {
 869                return "";
 870        }
 871}
 872
 873# format, perhaps shortened and with markers, title line
 874sub format_subject_html {
 875        my ($long, $short, $href, $extra) = @_;
 876        $extra = '' unless defined($extra);
 877
 878        if (length($short) < length($long)) {
 879                return $cgi->a({-href => $href, -class => "list subject",
 880                                -title => to_utf8($long)},
 881                       esc_html($short) . $extra);
 882        } else {
 883                return $cgi->a({-href => $href, -class => "list subject"},
 884                       esc_html($long)  . $extra);
 885        }
 886}
 887
 888# format patch (diff) line (rather not to be used for diff headers)
 889sub format_diff_line {
 890        my $line = shift;
 891        my ($from, $to) = @_;
 892        my $char = substr($line, 0, 1);
 893        my $diff_class = "";
 894
 895        chomp $line;
 896
 897        if ($char eq '+') {
 898                $diff_class = " add";
 899        } elsif ($char eq "-") {
 900                $diff_class = " rem";
 901        } elsif ($char eq "@") {
 902                $diff_class = " chunk_header";
 903        } elsif ($char eq "\\") {
 904                $diff_class = " incomplete";
 905        }
 906        $line = untabify($line);
 907        if ($from && $to && $line =~ m/^\@{2} /) {
 908                my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
 909                        $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
 910
 911                $from_lines = 0 unless defined $from_lines;
 912                $to_lines   = 0 unless defined $to_lines;
 913
 914                if ($from->{'href'}) {
 915                        $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
 916                                             -class=>"list"}, $from_text);
 917                }
 918                if ($to->{'href'}) {
 919                        $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
 920                                             -class=>"list"}, $to_text);
 921                }
 922                $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
 923                        "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
 924                return "<div class=\"diff$diff_class\">$line</div>\n";
 925        }
 926        return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
 927}
 928
 929## ----------------------------------------------------------------------
 930## git utility subroutines, invoking git commands
 931
 932# returns path to the core git executable and the --git-dir parameter as list
 933sub git_cmd {
 934        return $GIT, '--git-dir='.$git_dir;
 935}
 936
 937# returns path to the core git executable and the --git-dir parameter as string
 938sub git_cmd_str {
 939        return join(' ', git_cmd());
 940}
 941
 942# get HEAD ref of given project as hash
 943sub git_get_head_hash {
 944        my $project = shift;
 945        my $o_git_dir = $git_dir;
 946        my $retval = undef;
 947        $git_dir = "$projectroot/$project";
 948        if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
 949                my $head = <$fd>;
 950                close $fd;
 951                if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
 952                        $retval = $1;
 953                }
 954        }
 955        if (defined $o_git_dir) {
 956                $git_dir = $o_git_dir;
 957        }
 958        return $retval;
 959}
 960
 961# get type of given object
 962sub git_get_type {
 963        my $hash = shift;
 964
 965        open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
 966        my $type = <$fd>;
 967        close $fd or return;
 968        chomp $type;
 969        return $type;
 970}
 971
 972sub git_get_project_config {
 973        my ($key, $type) = @_;
 974
 975        return unless ($key);
 976        $key =~ s/^gitweb\.//;
 977        return if ($key =~ m/\W/);
 978
 979        my @x = (git_cmd(), 'repo-config');
 980        if (defined $type) { push @x, $type; }
 981        push @x, "--get";
 982        push @x, "gitweb.$key";
 983        my $val = qx(@x);
 984        chomp $val;
 985        return ($val);
 986}
 987
 988# get hash of given path at given ref
 989sub git_get_hash_by_path {
 990        my $base = shift;
 991        my $path = shift || return undef;
 992        my $type = shift;
 993
 994        $path =~ s,/+$,,;
 995
 996        open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
 997                or die_error(undef, "Open git-ls-tree failed");
 998        my $line = <$fd>;
 999        close $fd or return undef;
1000
1001        #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1002        $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
1003        if (defined $type && $type ne $2) {
1004                # type doesn't match
1005                return undef;
1006        }
1007        return $3;
1008}
1009
1010## ......................................................................
1011## git utility functions, directly accessing git repository
1012
1013sub git_get_project_description {
1014        my $path = shift;
1015
1016        open my $fd, "$projectroot/$path/description" or return undef;
1017        my $descr = <$fd>;
1018        close $fd;
1019        chomp $descr;
1020        return $descr;
1021}
1022
1023sub git_get_project_url_list {
1024        my $path = shift;
1025
1026        open my $fd, "$projectroot/$path/cloneurl" or return;
1027        my @git_project_url_list = map { chomp; $_ } <$fd>;
1028        close $fd;
1029
1030        return wantarray ? @git_project_url_list : \@git_project_url_list;
1031}
1032
1033sub git_get_projects_list {
1034        my ($filter) = @_;
1035        my @list;
1036
1037        $filter ||= '';
1038        $filter =~ s/\.git$//;
1039
1040        if (-d $projects_list) {
1041                # search in directory
1042                my $dir = $projects_list . ($filter ? "/$filter" : '');
1043                # remove the trailing "/"
1044                $dir =~ s!/+$!!;
1045                my $pfxlen = length("$dir");
1046
1047                my ($check_forks) = gitweb_check_feature('forks');
1048
1049                File::Find::find({
1050                        follow_fast => 1, # follow symbolic links
1051                        dangling_symlinks => 0, # ignore dangling symlinks, silently
1052                        wanted => sub {
1053                                # skip project-list toplevel, if we get it.
1054                                return if (m!^[/.]$!);
1055                                # only directories can be git repositories
1056                                return unless (-d $_);
1057
1058                                my $subdir = substr($File::Find::name, $pfxlen + 1);
1059                                # we check related file in $projectroot
1060                                if ($check_forks and $subdir =~ m#/.#) {
1061                                        $File::Find::prune = 1;
1062                                } elsif (check_export_ok("$projectroot/$filter/$subdir")) {
1063                                        push @list, { path => ($filter ? "$filter/" : '') . $subdir };
1064                                        $File::Find::prune = 1;
1065                                }
1066                        },
1067                }, "$dir");
1068
1069        } elsif (-f $projects_list) {
1070                # read from file(url-encoded):
1071                # 'git%2Fgit.git Linus+Torvalds'
1072                # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1073                # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1074                open my ($fd), $projects_list or return;
1075                while (my $line = <$fd>) {
1076                        chomp $line;
1077                        my ($path, $owner) = split ' ', $line;
1078                        $path = unescape($path);
1079                        $owner = unescape($owner);
1080                        if (!defined $path) {
1081                                next;
1082                        }
1083                        if ($filter ne '') {
1084                                # looking for forks;
1085                                my $pfx = substr($path, 0, length($filter));
1086                                if ($pfx ne $filter) {
1087                                        next;
1088                                }
1089                                my $sfx = substr($path, length($filter));
1090                                if ($sfx !~ /^\/.*\.git$/) {
1091                                        next;
1092                                }
1093                        }
1094                        if (check_export_ok("$projectroot/$path")) {
1095                                my $pr = {
1096                                        path => $path,
1097                                        owner => to_utf8($owner),
1098                                };
1099                                push @list, $pr
1100                        }
1101                }
1102                close $fd;
1103        }
1104        @list = sort {$a->{'path'} cmp $b->{'path'}} @list;
1105        return @list;
1106}
1107
1108sub git_get_project_owner {
1109        my $project = shift;
1110        my $owner;
1111
1112        return undef unless $project;
1113
1114        # read from file (url-encoded):
1115        # 'git%2Fgit.git Linus+Torvalds'
1116        # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1117        # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1118        if (-f $projects_list) {
1119                open (my $fd , $projects_list);
1120                while (my $line = <$fd>) {
1121                        chomp $line;
1122                        my ($pr, $ow) = split ' ', $line;
1123                        $pr = unescape($pr);
1124                        $ow = unescape($ow);
1125                        if ($pr eq $project) {
1126                                $owner = to_utf8($ow);
1127                                last;
1128                        }
1129                }
1130                close $fd;
1131        }
1132        if (!defined $owner) {
1133                $owner = get_file_owner("$projectroot/$project");
1134        }
1135
1136        return $owner;
1137}
1138
1139sub git_get_last_activity {
1140        my ($path) = @_;
1141        my $fd;
1142
1143        $git_dir = "$projectroot/$path";
1144        open($fd, "-|", git_cmd(), 'for-each-ref',
1145             '--format=%(committer)',
1146             '--sort=-committerdate',
1147             '--count=1',
1148             'refs/heads') or return;
1149        my $most_recent = <$fd>;
1150        close $fd or return;
1151        if ($most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1152                my $timestamp = $1;
1153                my $age = time - $timestamp;
1154                return ($age, age_string($age));
1155        }
1156}
1157
1158sub git_get_references {
1159        my $type = shift || "";
1160        my %refs;
1161        # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
1162        # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
1163        open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
1164                ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
1165                or return;
1166
1167        while (my $line = <$fd>) {
1168                chomp $line;
1169                if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type/?[^^]+)!) {
1170                        if (defined $refs{$1}) {
1171                                push @{$refs{$1}}, $2;
1172                        } else {
1173                                $refs{$1} = [ $2 ];
1174                        }
1175                }
1176        }
1177        close $fd or return;
1178        return \%refs;
1179}
1180
1181sub git_get_rev_name_tags {
1182        my $hash = shift || return undef;
1183
1184        open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1185                or return;
1186        my $name_rev = <$fd>;
1187        close $fd;
1188
1189        if ($name_rev =~ m|^$hash tags/(.*)$|) {
1190                return $1;
1191        } else {
1192                # catches also '$hash undefined' output
1193                return undef;
1194        }
1195}
1196
1197## ----------------------------------------------------------------------
1198## parse to hash functions
1199
1200sub parse_date {
1201        my $epoch = shift;
1202        my $tz = shift || "-0000";
1203
1204        my %date;
1205        my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1206        my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1207        my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1208        $date{'hour'} = $hour;
1209        $date{'minute'} = $min;
1210        $date{'mday'} = $mday;
1211        $date{'day'} = $days[$wday];
1212        $date{'month'} = $months[$mon];
1213        $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1214                             $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1215        $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1216                             $mday, $months[$mon], $hour ,$min;
1217        $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
1218                             1900+$year, $mon, $mday, $hour ,$min, $sec;
1219
1220        $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1221        my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1222        ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1223        $date{'hour_local'} = $hour;
1224        $date{'minute_local'} = $min;
1225        $date{'tz_local'} = $tz;
1226        $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
1227                                  1900+$year, $mon+1, $mday,
1228                                  $hour, $min, $sec, $tz);
1229        return %date;
1230}
1231
1232sub parse_tag {
1233        my $tag_id = shift;
1234        my %tag;
1235        my @comment;
1236
1237        open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1238        $tag{'id'} = $tag_id;
1239        while (my $line = <$fd>) {
1240                chomp $line;
1241                if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1242                        $tag{'object'} = $1;
1243                } elsif ($line =~ m/^type (.+)$/) {
1244                        $tag{'type'} = $1;
1245                } elsif ($line =~ m/^tag (.+)$/) {
1246                        $tag{'name'} = $1;
1247                } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1248                        $tag{'author'} = $1;
1249                        $tag{'epoch'} = $2;
1250                        $tag{'tz'} = $3;
1251                } elsif ($line =~ m/--BEGIN/) {
1252                        push @comment, $line;
1253                        last;
1254                } elsif ($line eq "") {
1255                        last;
1256                }
1257        }
1258        push @comment, <$fd>;
1259        $tag{'comment'} = \@comment;
1260        close $fd or return;
1261        if (!defined $tag{'name'}) {
1262                return
1263        };
1264        return %tag
1265}
1266
1267sub parse_commit {
1268        my $commit_id = shift;
1269        my $commit_text = shift;
1270
1271        my @commit_lines;
1272        my %co;
1273
1274        if (defined $commit_text) {
1275                @commit_lines = @$commit_text;
1276        } else {
1277                local $/ = "\0";
1278                open my $fd, "-|", git_cmd(), "rev-list",
1279                        "--header", "--parents", "--max-count=1",
1280                        $commit_id, "--"
1281                        or return;
1282                @commit_lines = split '\n', <$fd>;
1283                close $fd or return;
1284                pop @commit_lines;
1285        }
1286        my $header = shift @commit_lines;
1287        if (!($header =~ m/^[0-9a-fA-F]{40}/)) {
1288                return;
1289        }
1290        ($co{'id'}, my @parents) = split ' ', $header;
1291        $co{'parents'} = \@parents;
1292        $co{'parent'} = $parents[0];
1293        while (my $line = shift @commit_lines) {
1294                last if $line eq "\n";
1295                if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1296                        $co{'tree'} = $1;
1297                } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1298                        $co{'author'} = $1;
1299                        $co{'author_epoch'} = $2;
1300                        $co{'author_tz'} = $3;
1301                        if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
1302                                $co{'author_name'}  = $1;
1303                                $co{'author_email'} = $2;
1304                        } else {
1305                                $co{'author_name'} = $co{'author'};
1306                        }
1307                } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1308                        $co{'committer'} = $1;
1309                        $co{'committer_epoch'} = $2;
1310                        $co{'committer_tz'} = $3;
1311                        $co{'committer_name'} = $co{'committer'};
1312                        if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
1313                                $co{'committer_name'}  = $1;
1314                                $co{'committer_email'} = $2;
1315                        } else {
1316                                $co{'committer_name'} = $co{'committer'};
1317                        }
1318                }
1319        }
1320        if (!defined $co{'tree'}) {
1321                return;
1322        };
1323
1324        foreach my $title (@commit_lines) {
1325                $title =~ s/^    //;
1326                if ($title ne "") {
1327                        $co{'title'} = chop_str($title, 80, 5);
1328                        # remove leading stuff of merges to make the interesting part visible
1329                        if (length($title) > 50) {
1330                                $title =~ s/^Automatic //;
1331                                $title =~ s/^merge (of|with) /Merge ... /i;
1332                                if (length($title) > 50) {
1333                                        $title =~ s/(http|rsync):\/\///;
1334                                }
1335                                if (length($title) > 50) {
1336                                        $title =~ s/(master|www|rsync)\.//;
1337                                }
1338                                if (length($title) > 50) {
1339                                        $title =~ s/kernel.org:?//;
1340                                }
1341                                if (length($title) > 50) {
1342                                        $title =~ s/\/pub\/scm//;
1343                                }
1344                        }
1345                        $co{'title_short'} = chop_str($title, 50, 5);
1346                        last;
1347                }
1348        }
1349        if ($co{'title'} eq "") {
1350                $co{'title'} = $co{'title_short'} = '(no commit message)';
1351        }
1352        # remove added spaces
1353        foreach my $line (@commit_lines) {
1354                $line =~ s/^    //;
1355        }
1356        $co{'comment'} = \@commit_lines;
1357
1358        my $age = time - $co{'committer_epoch'};
1359        $co{'age'} = $age;
1360        $co{'age_string'} = age_string($age);
1361        my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1362        if ($age > 60*60*24*7*2) {
1363                $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1364                $co{'age_string_age'} = $co{'age_string'};
1365        } else {
1366                $co{'age_string_date'} = $co{'age_string'};
1367                $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1368        }
1369        return %co;
1370}
1371
1372# parse ref from ref_file, given by ref_id, with given type
1373sub parse_ref {
1374        my $ref_file = shift;
1375        my $ref_id = shift;
1376        my $type = shift || git_get_type($ref_id);
1377        my %ref_item;
1378
1379        $ref_item{'type'} = $type;
1380        $ref_item{'id'} = $ref_id;
1381        $ref_item{'epoch'} = 0;
1382        $ref_item{'age'} = "unknown";
1383        if ($type eq "tag") {
1384                my %tag = parse_tag($ref_id);
1385                $ref_item{'comment'} = $tag{'comment'};
1386                if ($tag{'type'} eq "commit") {
1387                        my %co = parse_commit($tag{'object'});
1388                        $ref_item{'epoch'} = $co{'committer_epoch'};
1389                        $ref_item{'age'} = $co{'age_string'};
1390                } elsif (defined($tag{'epoch'})) {
1391                        my $age = time - $tag{'epoch'};
1392                        $ref_item{'epoch'} = $tag{'epoch'};
1393                        $ref_item{'age'} = age_string($age);
1394                }
1395                $ref_item{'reftype'} = $tag{'type'};
1396                $ref_item{'name'} = $tag{'name'};
1397                $ref_item{'refid'} = $tag{'object'};
1398        } elsif ($type eq "commit"){
1399                my %co = parse_commit($ref_id);
1400                $ref_item{'reftype'} = "commit";
1401                $ref_item{'name'} = $ref_file;
1402                $ref_item{'title'} = $co{'title'};
1403                $ref_item{'refid'} = $ref_id;
1404                $ref_item{'epoch'} = $co{'committer_epoch'};
1405                $ref_item{'age'} = $co{'age_string'};
1406        } else {
1407                $ref_item{'reftype'} = $type;
1408                $ref_item{'name'} = $ref_file;
1409                $ref_item{'refid'} = $ref_id;
1410        }
1411
1412        return %ref_item;
1413}
1414
1415# parse line of git-diff-tree "raw" output
1416sub parse_difftree_raw_line {
1417        my $line = shift;
1418        my %res;
1419
1420        # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1421        # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1422        if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1423                $res{'from_mode'} = $1;
1424                $res{'to_mode'} = $2;
1425                $res{'from_id'} = $3;
1426                $res{'to_id'} = $4;
1427                $res{'status'} = $5;
1428                $res{'similarity'} = $6;
1429                if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1430                        ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1431                } else {
1432                        $res{'file'} = unquote($7);
1433                }
1434        }
1435        # 'c512b523472485aef4fff9e57b229d9d243c967f'
1436        elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1437                $res{'commit'} = $1;
1438        }
1439
1440        return wantarray ? %res : \%res;
1441}
1442
1443# parse line of git-ls-tree output
1444sub parse_ls_tree_line ($;%) {
1445        my $line = shift;
1446        my %opts = @_;
1447        my %res;
1448
1449        #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1450        $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
1451
1452        $res{'mode'} = $1;
1453        $res{'type'} = $2;
1454        $res{'hash'} = $3;
1455        if ($opts{'-z'}) {
1456                $res{'name'} = $4;
1457        } else {
1458                $res{'name'} = unquote($4);
1459        }
1460
1461        return wantarray ? %res : \%res;
1462}
1463
1464## ......................................................................
1465## parse to array of hashes functions
1466
1467sub git_get_heads_list {
1468        my $limit = shift;
1469        my @headslist;
1470
1471        open my $fd, '-|', git_cmd(), 'for-each-ref',
1472                ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
1473                '--format=%(objectname) %(refname) %(subject)%00%(committer)',
1474                'refs/heads'
1475                or return;
1476        while (my $line = <$fd>) {
1477                my %ref_item;
1478
1479                chomp $line;
1480                my ($refinfo, $committerinfo) = split(/\0/, $line);
1481                my ($hash, $name, $title) = split(' ', $refinfo, 3);
1482                my ($committer, $epoch, $tz) =
1483                        ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
1484                $name =~ s!^refs/heads/!!;
1485
1486                $ref_item{'name'}  = $name;
1487                $ref_item{'id'}    = $hash;
1488                $ref_item{'title'} = $title || '(no commit message)';
1489                $ref_item{'epoch'} = $epoch;
1490                if ($epoch) {
1491                        $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1492                } else {
1493                        $ref_item{'age'} = "unknown";
1494                }
1495
1496                push @headslist, \%ref_item;
1497        }
1498        close $fd;
1499
1500        return wantarray ? @headslist : \@headslist;
1501}
1502
1503sub git_get_tags_list {
1504        my $limit = shift;
1505        my @tagslist;
1506
1507        open my $fd, '-|', git_cmd(), 'for-each-ref',
1508                ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
1509                '--format=%(objectname) %(objecttype) %(refname) '.
1510                '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
1511                'refs/tags'
1512                or return;
1513        while (my $line = <$fd>) {
1514                my %ref_item;
1515
1516                chomp $line;
1517                my ($refinfo, $creatorinfo) = split(/\0/, $line);
1518                my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
1519                my ($creator, $epoch, $tz) =
1520                        ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
1521                $name =~ s!^refs/tags/!!;
1522
1523                $ref_item{'type'} = $type;
1524                $ref_item{'id'} = $id;
1525                $ref_item{'name'} = $name;
1526                if ($type eq "tag") {
1527                        $ref_item{'subject'} = $title;
1528                        $ref_item{'reftype'} = $reftype;
1529                        $ref_item{'refid'}   = $refid;
1530                } else {
1531                        $ref_item{'reftype'} = $type;
1532                        $ref_item{'refid'}   = $id;
1533                }
1534
1535                if ($type eq "tag" || $type eq "commit") {
1536                        $ref_item{'epoch'} = $epoch;
1537                        if ($epoch) {
1538                                $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1539                        } else {
1540                                $ref_item{'age'} = "unknown";
1541                        }
1542                }
1543
1544                push @tagslist, \%ref_item;
1545        }
1546        close $fd;
1547
1548        return wantarray ? @tagslist : \@tagslist;
1549}
1550
1551## ----------------------------------------------------------------------
1552## filesystem-related functions
1553
1554sub get_file_owner {
1555        my $path = shift;
1556
1557        my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
1558        my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
1559        if (!defined $gcos) {
1560                return undef;
1561        }
1562        my $owner = $gcos;
1563        $owner =~ s/[,;].*$//;
1564        return to_utf8($owner);
1565}
1566
1567## ......................................................................
1568## mimetype related functions
1569
1570sub mimetype_guess_file {
1571        my $filename = shift;
1572        my $mimemap = shift;
1573        -r $mimemap or return undef;
1574
1575        my %mimemap;
1576        open(MIME, $mimemap) or return undef;
1577        while (<MIME>) {
1578                next if m/^#/; # skip comments
1579                my ($mime, $exts) = split(/\t+/);
1580                if (defined $exts) {
1581                        my @exts = split(/\s+/, $exts);
1582                        foreach my $ext (@exts) {
1583                                $mimemap{$ext} = $mime;
1584                        }
1585                }
1586        }
1587        close(MIME);
1588
1589        $filename =~ /\.([^.]*)$/;
1590        return $mimemap{$1};
1591}
1592
1593sub mimetype_guess {
1594        my $filename = shift;
1595        my $mime;
1596        $filename =~ /\./ or return undef;
1597
1598        if ($mimetypes_file) {
1599                my $file = $mimetypes_file;
1600                if ($file !~ m!^/!) { # if it is relative path
1601                        # it is relative to project
1602                        $file = "$projectroot/$project/$file";
1603                }
1604                $mime = mimetype_guess_file($filename, $file);
1605        }
1606        $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
1607        return $mime;
1608}
1609
1610sub blob_mimetype {
1611        my $fd = shift;
1612        my $filename = shift;
1613
1614        if ($filename) {
1615                my $mime = mimetype_guess($filename);
1616                $mime and return $mime;
1617        }
1618
1619        # just in case
1620        return $default_blob_plain_mimetype unless $fd;
1621
1622        if (-T $fd) {
1623                return 'text/plain' .
1624                       ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
1625        } elsif (! $filename) {
1626                return 'application/octet-stream';
1627        } elsif ($filename =~ m/\.png$/i) {
1628                return 'image/png';
1629        } elsif ($filename =~ m/\.gif$/i) {
1630                return 'image/gif';
1631        } elsif ($filename =~ m/\.jpe?g$/i) {
1632                return 'image/jpeg';
1633        } else {
1634                return 'application/octet-stream';
1635        }
1636}
1637
1638## ======================================================================
1639## functions printing HTML: header, footer, error page
1640
1641sub git_header_html {
1642        my $status = shift || "200 OK";
1643        my $expires = shift;
1644
1645        my $title = "$site_name";
1646        if (defined $project) {
1647                $title .= " - $project";
1648                if (defined $action) {
1649                        $title .= "/$action";
1650                        if (defined $file_name) {
1651                                $title .= " - " . esc_path($file_name);
1652                                if ($action eq "tree" && $file_name !~ m|/$|) {
1653                                        $title .= "/";
1654                                }
1655                        }
1656                }
1657        }
1658        my $content_type;
1659        # require explicit support from the UA if we are to send the page as
1660        # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
1661        # we have to do this because MSIE sometimes globs '*/*', pretending to
1662        # support xhtml+xml but choking when it gets what it asked for.
1663        if (defined $cgi->http('HTTP_ACCEPT') &&
1664            $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
1665            $cgi->Accept('application/xhtml+xml') != 0) {
1666                $content_type = 'application/xhtml+xml';
1667        } else {
1668                $content_type = 'text/html';
1669        }
1670        print $cgi->header(-type=>$content_type, -charset => 'utf-8',
1671                           -status=> $status, -expires => $expires);
1672        print <<EOF;
1673<?xml version="1.0" encoding="utf-8"?>
1674<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
1675<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
1676<!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
1677<!-- git core binaries version $git_version -->
1678<head>
1679<meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
1680<meta name="generator" content="gitweb/$version git/$git_version"/>
1681<meta name="robots" content="index, nofollow"/>
1682<title>$title</title>
1683EOF
1684# print out each stylesheet that exist
1685        if (defined $stylesheet) {
1686#provides backwards capability for those people who define style sheet in a config file
1687                print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1688        } else {
1689                foreach my $stylesheet (@stylesheets) {
1690                        next unless $stylesheet;
1691                        print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1692                }
1693        }
1694        if (defined $project) {
1695                printf('<link rel="alternate" title="%s log RSS feed" '.
1696                       'href="%s" type="application/rss+xml" />'."\n",
1697                       esc_param($project), href(action=>"rss"));
1698                printf('<link rel="alternate" title="%s log Atom feed" '.
1699                       'href="%s" type="application/atom+xml" />'."\n",
1700                       esc_param($project), href(action=>"atom"));
1701        } else {
1702                printf('<link rel="alternate" title="%s projects list" '.
1703                       'href="%s" type="text/plain; charset=utf-8"/>'."\n",
1704                       $site_name, href(project=>undef, action=>"project_index"));
1705                printf('<link rel="alternate" title="%s projects feeds" '.
1706                       'href="%s" type="text/x-opml"/>'."\n",
1707                       $site_name, href(project=>undef, action=>"opml"));
1708        }
1709        if (defined $favicon) {
1710                print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
1711        }
1712
1713        print "</head>\n" .
1714              "<body>\n";
1715
1716        if (-f $site_header) {
1717                open (my $fd, $site_header);
1718                print <$fd>;
1719                close $fd;
1720        }
1721
1722        print "<div class=\"page_header\">\n" .
1723              $cgi->a({-href => esc_url($logo_url),
1724                       -title => $logo_label},
1725                      qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
1726        print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
1727        if (defined $project) {
1728                print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
1729                if (defined $action) {
1730                        print " / $action";
1731                }
1732                print "\n";
1733                if (!defined $searchtext) {
1734                        $searchtext = "";
1735                }
1736                my $search_hash;
1737                if (defined $hash_base) {
1738                        $search_hash = $hash_base;
1739                } elsif (defined $hash) {
1740                        $search_hash = $hash;
1741                } else {
1742                        $search_hash = "HEAD";
1743                }
1744                $cgi->param("a", "search");
1745                $cgi->param("h", $search_hash);
1746                $cgi->param("p", $project);
1747                print $cgi->startform(-method => "get", -action => $my_uri) .
1748                      "<div class=\"search\">\n" .
1749                      $cgi->hidden(-name => "p") . "\n" .
1750                      $cgi->hidden(-name => "a") . "\n" .
1751                      $cgi->hidden(-name => "h") . "\n" .
1752                      $cgi->popup_menu(-name => 'st', -default => 'commit',
1753                                       -values => ['commit', 'author', 'committer', 'pickaxe']) .
1754                      $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
1755                      " search:\n",
1756                      $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1757                      "</div>" .
1758                      $cgi->end_form() . "\n";
1759        }
1760        print "</div>\n";
1761}
1762
1763sub git_footer_html {
1764        print "<div class=\"page_footer\">\n";
1765        if (defined $project) {
1766                my $descr = git_get_project_description($project);
1767                if (defined $descr) {
1768                        print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1769                }
1770                print $cgi->a({-href => href(action=>"rss"),
1771                              -class => "rss_logo"}, "RSS") . " ";
1772                print $cgi->a({-href => href(action=>"atom"),
1773                              -class => "rss_logo"}, "Atom") . "\n";
1774        } else {
1775                print $cgi->a({-href => href(project=>undef, action=>"opml"),
1776                              -class => "rss_logo"}, "OPML") . " ";
1777                print $cgi->a({-href => href(project=>undef, action=>"project_index"),
1778                              -class => "rss_logo"}, "TXT") . "\n";
1779        }
1780        print "</div>\n" ;
1781
1782        if (-f $site_footer) {
1783                open (my $fd, $site_footer);
1784                print <$fd>;
1785                close $fd;
1786        }
1787
1788        print "</body>\n" .
1789              "</html>";
1790}
1791
1792sub die_error {
1793        my $status = shift || "403 Forbidden";
1794        my $error = shift || "Malformed query, file missing or permission denied";
1795
1796        git_header_html($status);
1797        print <<EOF;
1798<div class="page_body">
1799<br /><br />
1800$status - $error
1801<br />
1802</div>
1803EOF
1804        git_footer_html();
1805        exit;
1806}
1807
1808## ----------------------------------------------------------------------
1809## functions printing or outputting HTML: navigation
1810
1811sub git_print_page_nav {
1812        my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
1813        $extra = '' if !defined $extra; # pager or formats
1814
1815        my @navs = qw(summary shortlog log commit commitdiff tree);
1816        if ($suppress) {
1817                @navs = grep { $_ ne $suppress } @navs;
1818        }
1819
1820        my %arg = map { $_ => {action=>$_} } @navs;
1821        if (defined $head) {
1822                for (qw(commit commitdiff)) {
1823                        $arg{$_}{hash} = $head;
1824                }
1825                if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
1826                        for (qw(shortlog log)) {
1827                                $arg{$_}{hash} = $head;
1828                        }
1829                }
1830        }
1831        $arg{tree}{hash} = $treehead if defined $treehead;
1832        $arg{tree}{hash_base} = $treebase if defined $treebase;
1833
1834        print "<div class=\"page_nav\">\n" .
1835                (join " | ",
1836                 map { $_ eq $current ?
1837                       $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
1838                 } @navs);
1839        print "<br/>\n$extra<br/>\n" .
1840              "</div>\n";
1841}
1842
1843sub format_paging_nav {
1844        my ($action, $hash, $head, $page, $nrevs) = @_;
1845        my $paging_nav;
1846
1847
1848        if ($hash ne $head || $page) {
1849                $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
1850        } else {
1851                $paging_nav .= "HEAD";
1852        }
1853
1854        if ($page > 0) {
1855                $paging_nav .= " &sdot; " .
1856                        $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
1857                                 -accesskey => "p", -title => "Alt-p"}, "prev");
1858        } else {
1859                $paging_nav .= " &sdot; prev";
1860        }
1861
1862        if ($nrevs >= (100 * ($page+1)-1)) {
1863                $paging_nav .= " &sdot; " .
1864                        $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
1865                                 -accesskey => "n", -title => "Alt-n"}, "next");
1866        } else {
1867                $paging_nav .= " &sdot; next";
1868        }
1869
1870        return $paging_nav;
1871}
1872
1873## ......................................................................
1874## functions printing or outputting HTML: div
1875
1876sub git_print_header_div {
1877        my ($action, $title, $hash, $hash_base) = @_;
1878        my %args = ();
1879
1880        $args{action} = $action;
1881        $args{hash} = $hash if $hash;
1882        $args{hash_base} = $hash_base if $hash_base;
1883
1884        print "<div class=\"header\">\n" .
1885              $cgi->a({-href => href(%args), -class => "title"},
1886              $title ? $title : $action) .
1887              "\n</div>\n";
1888}
1889
1890#sub git_print_authorship (\%) {
1891sub git_print_authorship {
1892        my $co = shift;
1893
1894        my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
1895        print "<div class=\"author_date\">" .
1896              esc_html($co->{'author_name'}) .
1897              " [$ad{'rfc2822'}";
1898        if ($ad{'hour_local'} < 6) {
1899                printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
1900                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1901        } else {
1902                printf(" (%02d:%02d %s)",
1903                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1904        }
1905        print "]</div>\n";
1906}
1907
1908sub git_print_page_path {
1909        my $name = shift;
1910        my $type = shift;
1911        my $hb = shift;
1912
1913
1914        print "<div class=\"page_path\">";
1915        print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
1916                      -title => 'tree root'}, "[$project]");
1917        print " / ";
1918        if (defined $name) {
1919                my @dirname = split '/', $name;
1920                my $basename = pop @dirname;
1921                my $fullname = '';
1922
1923                foreach my $dir (@dirname) {
1924                        $fullname .= ($fullname ? '/' : '') . $dir;
1925                        print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
1926                                                     hash_base=>$hb),
1927                                      -title => esc_html($fullname)}, esc_path($dir));
1928                        print " / ";
1929                }
1930                if (defined $type && $type eq 'blob') {
1931                        print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
1932                                                     hash_base=>$hb),
1933                                      -title => esc_html($name)}, esc_path($basename));
1934                } elsif (defined $type && $type eq 'tree') {
1935                        print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
1936                                                     hash_base=>$hb),
1937                                      -title => esc_html($name)}, esc_path($basename));
1938                        print " / ";
1939                } else {
1940                        print esc_path($basename);
1941                }
1942        }
1943        print "<br/></div>\n";
1944}
1945
1946# sub git_print_log (\@;%) {
1947sub git_print_log ($;%) {
1948        my $log = shift;
1949        my %opts = @_;
1950
1951        if ($opts{'-remove_title'}) {
1952                # remove title, i.e. first line of log
1953                shift @$log;
1954        }
1955        # remove leading empty lines
1956        while (defined $log->[0] && $log->[0] eq "") {
1957                shift @$log;
1958        }
1959
1960        # print log
1961        my $signoff = 0;
1962        my $empty = 0;
1963        foreach my $line (@$log) {
1964                if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
1965                        $signoff = 1;
1966                        $empty = 0;
1967                        if (! $opts{'-remove_signoff'}) {
1968                                print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
1969                                next;
1970                        } else {
1971                                # remove signoff lines
1972                                next;
1973                        }
1974                } else {
1975                        $signoff = 0;
1976                }
1977
1978                # print only one empty line
1979                # do not print empty line after signoff
1980                if ($line eq "") {
1981                        next if ($empty || $signoff);
1982                        $empty = 1;
1983                } else {
1984                        $empty = 0;
1985                }
1986
1987                print format_log_line_html($line) . "<br/>\n";
1988        }
1989
1990        if ($opts{'-final_empty_line'}) {
1991                # end with single empty line
1992                print "<br/>\n" unless $empty;
1993        }
1994}
1995
1996# return link target (what link points to)
1997sub git_get_link_target {
1998        my $hash = shift;
1999        my $link_target;
2000
2001        # read link
2002        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2003                or return;
2004        {
2005                local $/;
2006                $link_target = <$fd>;
2007        }
2008        close $fd
2009                or return;
2010
2011        return $link_target;
2012}
2013
2014# given link target, and the directory (basedir) the link is in,
2015# return target of link relative to top directory (top tree);
2016# return undef if it is not possible (including absolute links).
2017sub normalize_link_target {
2018        my ($link_target, $basedir, $hash_base) = @_;
2019
2020        # we can normalize symlink target only if $hash_base is provided
2021        return unless $hash_base;
2022
2023        # absolute symlinks (beginning with '/') cannot be normalized
2024        return if (substr($link_target, 0, 1) eq '/');
2025
2026        # normalize link target to path from top (root) tree (dir)
2027        my $path;
2028        if ($basedir) {
2029                $path = $basedir . '/' . $link_target;
2030        } else {
2031                # we are in top (root) tree (dir)
2032                $path = $link_target;
2033        }
2034
2035        # remove //, /./, and /../
2036        my @path_parts;
2037        foreach my $part (split('/', $path)) {
2038                # discard '.' and ''
2039                next if (!$part || $part eq '.');
2040                # handle '..'
2041                if ($part eq '..') {
2042                        if (@path_parts) {
2043                                pop @path_parts;
2044                        } else {
2045                                # link leads outside repository (outside top dir)
2046                                return;
2047                        }
2048                } else {
2049                        push @path_parts, $part;
2050                }
2051        }
2052        $path = join('/', @path_parts);
2053
2054        return $path;
2055}
2056
2057# print tree entry (row of git_tree), but without encompassing <tr> element
2058sub git_print_tree_entry {
2059        my ($t, $basedir, $hash_base, $have_blame) = @_;
2060
2061        my %base_key = ();
2062        $base_key{'hash_base'} = $hash_base if defined $hash_base;
2063
2064        # The format of a table row is: mode list link.  Where mode is
2065        # the mode of the entry, list is the name of the entry, an href,
2066        # and link is the action links of the entry.
2067
2068        print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
2069        if ($t->{'type'} eq "blob") {
2070                print "<td class=\"list\">" .
2071                        $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2072                                               file_name=>"$basedir$t->{'name'}", %base_key),
2073                                -class => "list"}, esc_path($t->{'name'}));
2074                if (S_ISLNK(oct $t->{'mode'})) {
2075                        my $link_target = git_get_link_target($t->{'hash'});
2076                        if ($link_target) {
2077                                my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
2078                                if (defined $norm_target) {
2079                                        print " -> " .
2080                                              $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
2081                                                                     file_name=>$norm_target),
2082                                                       -title => $norm_target}, esc_path($link_target));
2083                                } else {
2084                                        print " -> " . esc_path($link_target);
2085                                }
2086                        }
2087                }
2088                print "</td>\n";
2089                print "<td class=\"link\">";
2090                print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2091                                             file_name=>"$basedir$t->{'name'}", %base_key)},
2092                              "blob");
2093                if ($have_blame) {
2094                        print " | " .
2095                              $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
2096                                                     file_name=>"$basedir$t->{'name'}", %base_key)},
2097                                      "blame");
2098                }
2099                if (defined $hash_base) {
2100                        print " | " .
2101                              $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2102                                                     hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
2103                                      "history");
2104                }
2105                print " | " .
2106                        $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
2107                                               file_name=>"$basedir$t->{'name'}")},
2108                                "raw");
2109                print "</td>\n";
2110
2111        } elsif ($t->{'type'} eq "tree") {
2112                print "<td class=\"list\">";
2113                print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2114                                             file_name=>"$basedir$t->{'name'}", %base_key)},
2115                              esc_path($t->{'name'}));
2116                print "</td>\n";
2117                print "<td class=\"link\">";
2118                print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2119                                             file_name=>"$basedir$t->{'name'}", %base_key)},
2120                              "tree");
2121                if (defined $hash_base) {
2122                        print " | " .
2123                              $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2124                                                     file_name=>"$basedir$t->{'name'}")},
2125                                      "history");
2126                }
2127                print "</td>\n";
2128        }
2129}
2130
2131## ......................................................................
2132## functions printing large fragments of HTML
2133
2134sub git_difftree_body {
2135        my ($difftree, $hash, $parent) = @_;
2136        my ($have_blame) = gitweb_check_feature('blame');
2137        print "<div class=\"list_head\">\n";
2138        if ($#{$difftree} > 10) {
2139                print(($#{$difftree} + 1) . " files changed:\n");
2140        }
2141        print "</div>\n";
2142
2143        print "<table class=\"diff_tree\">\n";
2144        my $alternate = 1;
2145        my $patchno = 0;
2146        foreach my $line (@{$difftree}) {
2147                my %diff = parse_difftree_raw_line($line);
2148
2149                if ($alternate) {
2150                        print "<tr class=\"dark\">\n";
2151                } else {
2152                        print "<tr class=\"light\">\n";
2153                }
2154                $alternate ^= 1;
2155
2156                my ($to_mode_oct, $to_mode_str, $to_file_type);
2157                my ($from_mode_oct, $from_mode_str, $from_file_type);
2158                if ($diff{'to_mode'} ne ('0' x 6)) {
2159                        $to_mode_oct = oct $diff{'to_mode'};
2160                        if (S_ISREG($to_mode_oct)) { # only for regular file
2161                                $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
2162                        }
2163                        $to_file_type = file_type($diff{'to_mode'});
2164                }
2165                if ($diff{'from_mode'} ne ('0' x 6)) {
2166                        $from_mode_oct = oct $diff{'from_mode'};
2167                        if (S_ISREG($to_mode_oct)) { # only for regular file
2168                                $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
2169                        }
2170                        $from_file_type = file_type($diff{'from_mode'});
2171                }
2172
2173                if ($diff{'status'} eq "A") { # created
2174                        my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
2175                        $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
2176                        $mode_chng   .= "]</span>";
2177                        print "<td>";
2178                        print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2179                                                     hash_base=>$hash, file_name=>$diff{'file'}),
2180                                      -class => "list"}, esc_path($diff{'file'}));
2181                        print "</td>\n";
2182                        print "<td>$mode_chng</td>\n";
2183                        print "<td class=\"link\">";
2184                        if ($action eq 'commitdiff') {
2185                                # link to patch
2186                                $patchno++;
2187                                print $cgi->a({-href => "#patch$patchno"}, "patch");
2188                                print " | ";
2189                        }
2190                        print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2191                                                     hash_base=>$hash, file_name=>$diff{'file'})},
2192                                      "blob") . " | ";
2193                        print "</td>\n";
2194
2195                } elsif ($diff{'status'} eq "D") { # deleted
2196                        my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
2197                        print "<td>";
2198                        print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
2199                                                     hash_base=>$parent, file_name=>$diff{'file'}),
2200                                       -class => "list"}, esc_path($diff{'file'}));
2201                        print "</td>\n";
2202                        print "<td>$mode_chng</td>\n";
2203                        print "<td class=\"link\">";
2204                        if ($action eq 'commitdiff') {
2205                                # link to patch
2206                                $patchno++;
2207                                print $cgi->a({-href => "#patch$patchno"}, "patch");
2208                                print " | ";
2209                        }
2210                        print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
2211                                                     hash_base=>$parent, file_name=>$diff{'file'})},
2212                                      "blob") . " | ";
2213                        if ($have_blame) {
2214                                print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
2215                                                             file_name=>$diff{'file'})},
2216                                              "blame") . " | ";
2217                        }
2218                        print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
2219                                                     file_name=>$diff{'file'})},
2220                                      "history");
2221                        print "</td>\n";
2222
2223                } elsif ($diff{'status'} eq "M" || $diff{'status'} eq "T") { # modified, or type changed
2224                        my $mode_chnge = "";
2225                        if ($diff{'from_mode'} != $diff{'to_mode'}) {
2226                                $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
2227                                if ($from_file_type != $to_file_type) {
2228                                        $mode_chnge .= " from $from_file_type to $to_file_type";
2229                                }
2230                                if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
2231                                        if ($from_mode_str && $to_mode_str) {
2232                                                $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
2233                                        } elsif ($to_mode_str) {
2234                                                $mode_chnge .= " mode: $to_mode_str";
2235                                        }
2236                                }
2237                                $mode_chnge .= "]</span>\n";
2238                        }
2239                        print "<td>";
2240                        print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2241                                                     hash_base=>$hash, file_name=>$diff{'file'}),
2242                                      -class => "list"}, esc_path($diff{'file'}));
2243                        print "</td>\n";
2244                        print "<td>$mode_chnge</td>\n";
2245                        print "<td class=\"link\">";
2246                        if ($action eq 'commitdiff') {
2247                                # link to patch
2248                                $patchno++;
2249                                print $cgi->a({-href => "#patch$patchno"}, "patch") .
2250                                      " | ";
2251                        } elsif ($diff{'to_id'} ne $diff{'from_id'}) {
2252                                # "commit" view and modified file (not onlu mode changed)
2253                                print $cgi->a({-href => href(action=>"blobdiff",
2254                                                             hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
2255                                                             hash_base=>$hash, hash_parent_base=>$parent,
2256                                                             file_name=>$diff{'file'})},
2257                                              "diff") .
2258                                      " | ";
2259                        }
2260                        print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2261                                                     hash_base=>$hash, file_name=>$diff{'file'})},
2262                                       "blob") . " | ";
2263                        if ($have_blame) {
2264                                print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2265                                                             file_name=>$diff{'file'})},
2266                                              "blame") . " | ";
2267                        }
2268                        print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2269                                                     file_name=>$diff{'file'})},
2270                                      "history");
2271                        print "</td>\n";
2272
2273                } elsif ($diff{'status'} eq "R" || $diff{'status'} eq "C") { # renamed or copied
2274                        my %status_name = ('R' => 'moved', 'C' => 'copied');
2275                        my $nstatus = $status_name{$diff{'status'}};
2276                        my $mode_chng = "";
2277                        if ($diff{'from_mode'} != $diff{'to_mode'}) {
2278                                # mode also for directories, so we cannot use $to_mode_str
2279                                $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
2280                        }
2281                        print "<td>" .
2282                              $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2283                                                     hash=>$diff{'to_id'}, file_name=>$diff{'to_file'}),
2284                                      -class => "list"}, esc_path($diff{'to_file'})) . "</td>\n" .
2285                              "<td><span class=\"file_status $nstatus\">[$nstatus from " .
2286                              $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
2287                                                     hash=>$diff{'from_id'}, file_name=>$diff{'from_file'}),
2288                                      -class => "list"}, esc_path($diff{'from_file'})) .
2289                              " with " . (int $diff{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
2290                              "<td class=\"link\">";
2291                        if ($action eq 'commitdiff') {
2292                                # link to patch
2293                                $patchno++;
2294                                print $cgi->a({-href => "#patch$patchno"}, "patch") .
2295                                      " | ";
2296                        } elsif ($diff{'to_id'} ne $diff{'from_id'}) {
2297                                # "commit" view and modified file (not only pure rename or copy)
2298                                print $cgi->a({-href => href(action=>"blobdiff",
2299                                                             hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
2300                                                             hash_base=>$hash, hash_parent_base=>$parent,
2301                                                             file_name=>$diff{'to_file'}, file_parent=>$diff{'from_file'})},
2302                                              "diff") .
2303                                      " | ";
2304                        }
2305                        print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2306                                                     hash_base=>$parent, file_name=>$diff{'to_file'})},
2307                                      "blob") . " | ";
2308                        if ($have_blame) {
2309                                print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2310                                                             file_name=>$diff{'to_file'})},
2311                                              "blame") . " | ";
2312                        }
2313                        print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2314                                                    file_name=>$diff{'to_file'})},
2315                                      "history");
2316                        print "</td>\n";
2317
2318                } # we should not encounter Unmerged (U) or Unknown (X) status
2319                print "</tr>\n";
2320        }
2321        print "</table>\n";
2322}
2323
2324sub git_patchset_body {
2325        my ($fd, $difftree, $hash, $hash_parent) = @_;
2326
2327        my $patch_idx = 0;
2328        my $patch_line;
2329        my $diffinfo;
2330        my (%from, %to);
2331        my ($from_id, $to_id);
2332
2333        print "<div class=\"patchset\">\n";
2334
2335        # skip to first patch
2336        while ($patch_line = <$fd>) {
2337                chomp $patch_line;
2338
2339                last if ($patch_line =~ m/^diff /);
2340        }
2341
2342 PATCH:
2343        while ($patch_line) {
2344                my @diff_header;
2345
2346                # git diff header
2347                #assert($patch_line =~ m/^diff /) if DEBUG;
2348                #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
2349                push @diff_header, $patch_line;
2350
2351                # extended diff header
2352        EXTENDED_HEADER:
2353                while ($patch_line = <$fd>) {
2354                        chomp $patch_line;
2355
2356                        last EXTENDED_HEADER if ($patch_line =~ m/^--- /);
2357
2358                        if ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
2359                                $from_id = $1;
2360                                $to_id   = $2;
2361                        }
2362
2363                        push @diff_header, $patch_line;
2364                }
2365                #last PATCH unless $patch_line;
2366                my $last_patch_line = $patch_line;
2367
2368                # check if current patch belong to current raw line
2369                # and parse raw git-diff line if needed
2370                if (defined $diffinfo &&
2371                    $diffinfo->{'from_id'} eq $from_id &&
2372                    $diffinfo->{'to_id'}   eq $to_id) {
2373                        # this is split patch
2374                        print "<div class=\"patch cont\">\n";
2375                } else {
2376                        # advance raw git-diff output if needed
2377                        $patch_idx++ if defined $diffinfo;
2378
2379                        # read and prepare patch information
2380                        if (ref($difftree->[$patch_idx]) eq "HASH") {
2381                                # pre-parsed (or generated by hand)
2382                                $diffinfo = $difftree->[$patch_idx];
2383                        } else {
2384                                $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
2385                        }
2386                        $from{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
2387                        $to{'file'}   = $diffinfo->{'to_file'}   || $diffinfo->{'file'};
2388                        if ($diffinfo->{'status'} ne "A") { # not new (added) file
2389                                $from{'href'} = href(action=>"blob", hash_base=>$hash_parent,
2390                                                     hash=>$diffinfo->{'from_id'},
2391                                                     file_name=>$from{'file'});
2392                        }
2393                        if ($diffinfo->{'status'} ne "D") { # not deleted file
2394                                $to{'href'} = href(action=>"blob", hash_base=>$hash,
2395                                                   hash=>$diffinfo->{'to_id'},
2396                                                   file_name=>$to{'file'});
2397                        }
2398                        # this is first patch for raw difftree line with $patch_idx index
2399                        # we index @$difftree array from 0, but number patches from 1
2400                        print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
2401                }
2402
2403                # print "git diff" header
2404                $patch_line = shift @diff_header;
2405                $patch_line =~ s!^(diff (.*?) )"?a/.*$!$1!;
2406                if ($from{'href'}) {
2407                        $patch_line .= $cgi->a({-href => $from{'href'}, -class => "path"},
2408                                               'a/' . esc_path($from{'file'}));
2409                } else { # file was added
2410                        $patch_line .= 'a/' . esc_path($from{'file'});
2411                }
2412                $patch_line .= ' ';
2413                if ($to{'href'}) {
2414                        $patch_line .= $cgi->a({-href => $to{'href'}, -class => "path"},
2415                                               'b/' . esc_path($to{'file'}));
2416                } else { # file was deleted
2417                        $patch_line .= 'b/' . esc_path($to{'file'});
2418                }
2419                print "<div class=\"diff header\">$patch_line</div>\n";
2420
2421                # print extended diff header
2422                print "<div class=\"diff extended_header\">\n" if (@diff_header > 0);
2423        EXTENDED_HEADER:
2424                foreach $patch_line (@diff_header) {
2425                        # match <path>
2426                        if ($patch_line =~ s!^((copy|rename) from ).*$!$1! && $from{'href'}) {
2427                                $patch_line .= $cgi->a({-href=>$from{'href'}, -class=>"path"},
2428                                                        esc_path($from{'file'}));
2429                        }
2430                        if ($patch_line =~ s!^((copy|rename) to ).*$!$1! && $to{'href'}) {
2431                                $patch_line = $cgi->a({-href=>$to{'href'}, -class=>"path"},
2432                                                      esc_path($to{'file'}));
2433                        }
2434                        # match <mode>
2435                        if ($patch_line =~ m/\s(\d{6})$/) {
2436                                $patch_line .= '<span class="info"> (' .
2437                                               file_type_long($1) .
2438                                               ')</span>';
2439                        }
2440                        # match <hash>
2441                        if ($patch_line =~ m/^index/) {
2442                                my ($from_link, $to_link);
2443                                if ($from{'href'}) {
2444                                        $from_link = $cgi->a({-href=>$from{'href'}, -class=>"hash"},
2445                                                             substr($diffinfo->{'from_id'},0,7));
2446                                } else {
2447                                        $from_link = '0' x 7;
2448                                }
2449                                if ($to{'href'}) {
2450                                        $to_link = $cgi->a({-href=>$to{'href'}, -class=>"hash"},
2451                                                           substr($diffinfo->{'to_id'},0,7));
2452                                } else {
2453                                        $to_link = '0' x 7;
2454                                }
2455                                #affirm {
2456                                #       my ($from_hash, $to_hash) =
2457                                #               ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/);
2458                                #       my ($from_id, $to_id) =
2459                                #               ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2460                                #       ($from_hash eq $from_id) && ($to_hash eq $to_id);
2461                                #} if DEBUG;
2462                                my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2463                                $patch_line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
2464                        }
2465                        print $patch_line . "<br/>\n";
2466                }
2467                print "</div>\n"  if (@diff_header > 0); # class="diff extended_header"
2468
2469                # from-file/to-file diff header
2470                $patch_line = $last_patch_line;
2471                #assert($patch_line =~ m/^---/) if DEBUG;
2472                if ($from{'href'}) {
2473                        $patch_line = '--- a/' .
2474                                      $cgi->a({-href=>$from{'href'}, -class=>"path"},
2475                                              esc_path($from{'file'}));
2476                }
2477                print "<div class=\"diff from_file\">$patch_line</div>\n";
2478
2479                $patch_line = <$fd>;
2480                #last PATCH unless $patch_line;
2481                chomp $patch_line;
2482
2483                #assert($patch_line =~ m/^+++/) if DEBUG;
2484                if ($to{'href'}) {
2485                        $patch_line = '+++ b/' .
2486                                      $cgi->a({-href=>$to{'href'}, -class=>"path"},
2487                                              esc_path($to{'file'}));
2488                }
2489                print "<div class=\"diff to_file\">$patch_line</div>\n";
2490
2491                # the patch itself
2492        LINE:
2493                while ($patch_line = <$fd>) {
2494                        chomp $patch_line;
2495
2496                        next PATCH if ($patch_line =~ m/^diff /);
2497
2498                        print format_diff_line($patch_line, \%from, \%to);
2499                }
2500
2501        } continue {
2502                print "</div>\n"; # class="patch"
2503        }
2504
2505        print "</div>\n"; # class="patchset"
2506}
2507
2508# . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2509
2510sub git_project_list_body {
2511        my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
2512
2513        my ($check_forks) = gitweb_check_feature('forks');
2514
2515        my @projects;
2516        foreach my $pr (@$projlist) {
2517                my (@aa) = git_get_last_activity($pr->{'path'});
2518                unless (@aa) {
2519                        next;
2520                }
2521                ($pr->{'age'}, $pr->{'age_string'}) = @aa;
2522                if (!defined $pr->{'descr'}) {
2523                        my $descr = git_get_project_description($pr->{'path'}) || "";
2524                        $pr->{'descr_long'} = to_utf8($descr);
2525                        $pr->{'descr'} = chop_str($descr, 25, 5);
2526                }
2527                if (!defined $pr->{'owner'}) {
2528                        $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
2529                }
2530                if ($check_forks) {
2531                        my $pname = $pr->{'path'};
2532                        if (($pname =~ s/\.git$//) &&
2533                            ($pname !~ /\/$/) &&
2534                            (-d "$projectroot/$pname")) {
2535                                $pr->{'forks'} = "-d $projectroot/$pname";
2536                        }
2537                        else {
2538                                $pr->{'forks'} = 0;
2539                        }
2540                }
2541                push @projects, $pr;
2542        }
2543
2544        $order ||= "project";
2545        $from = 0 unless defined $from;
2546        $to = $#projects if (!defined $to || $#projects < $to);
2547
2548        print "<table class=\"project_list\">\n";
2549        unless ($no_header) {
2550                print "<tr>\n";
2551                if ($check_forks) {
2552                        print "<th></th>\n";
2553                }
2554                if ($order eq "project") {
2555                        @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
2556                        print "<th>Project</th>\n";
2557                } else {
2558                        print "<th>" .
2559                              $cgi->a({-href => href(project=>undef, order=>'project'),
2560                                       -class => "header"}, "Project") .
2561                              "</th>\n";
2562                }
2563                if ($order eq "descr") {
2564                        @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
2565                        print "<th>Description</th>\n";
2566                } else {
2567                        print "<th>" .
2568                              $cgi->a({-href => href(project=>undef, order=>'descr'),
2569                                       -class => "header"}, "Description") .
2570                              "</th>\n";
2571                }
2572                if ($order eq "owner") {
2573                        @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
2574                        print "<th>Owner</th>\n";
2575                } else {
2576                        print "<th>" .
2577                              $cgi->a({-href => href(project=>undef, order=>'owner'),
2578                                       -class => "header"}, "Owner") .
2579                              "</th>\n";
2580                }
2581                if ($order eq "age") {
2582                        @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
2583                        print "<th>Last Change</th>\n";
2584                } else {
2585                        print "<th>" .
2586                              $cgi->a({-href => href(project=>undef, order=>'age'),
2587                                       -class => "header"}, "Last Change") .
2588                              "</th>\n";
2589                }
2590                print "<th></th>\n" .
2591                      "</tr>\n";
2592        }
2593        my $alternate = 1;
2594        for (my $i = $from; $i <= $to; $i++) {
2595                my $pr = $projects[$i];
2596                if ($alternate) {
2597                        print "<tr class=\"dark\">\n";
2598                } else {
2599                        print "<tr class=\"light\">\n";
2600                }
2601                $alternate ^= 1;
2602                if ($check_forks) {
2603                        print "<td>";
2604                        if ($pr->{'forks'}) {
2605                                print "<!-- $pr->{'forks'} -->\n";
2606                                print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
2607                        }
2608                        print "</td>\n";
2609                }
2610                print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2611                                        -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
2612                      "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2613                                        -class => "list", -title => $pr->{'descr_long'}},
2614                                        esc_html($pr->{'descr'})) . "</td>\n" .
2615                      "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
2616                print "<td class=\"". age_class($pr->{'age'}) . "\">" .
2617                      $pr->{'age_string'} . "</td>\n" .
2618                      "<td class=\"link\">" .
2619                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
2620                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
2621                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
2622                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
2623                      ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
2624                      "</td>\n" .
2625                      "</tr>\n";
2626        }
2627        if (defined $extra) {
2628                print "<tr>\n";
2629                if ($check_forks) {
2630                        print "<td></td>\n";
2631                }
2632                print "<td colspan=\"5\">$extra</td>\n" .
2633                      "</tr>\n";
2634        }
2635        print "</table>\n";
2636}
2637
2638sub git_shortlog_body {
2639        # uses global variable $project
2640        my ($revlist, $from, $to, $refs, $extra) = @_;
2641
2642        my $have_snapshot = gitweb_have_snapshot();
2643
2644        $from = 0 unless defined $from;
2645        $to = $#{$revlist} if (!defined $to || $#{$revlist} < $to);
2646
2647        print "<table class=\"shortlog\" cellspacing=\"0\">\n";
2648        my $alternate = 1;
2649        for (my $i = $from; $i <= $to; $i++) {
2650                my $commit = $revlist->[$i];
2651                #my $ref = defined $refs ? format_ref_marker($refs, $commit) : '';
2652                my $ref = format_ref_marker($refs, $commit);
2653                my %co = parse_commit($commit);
2654                if ($alternate) {
2655                        print "<tr class=\"dark\">\n";
2656                } else {
2657                        print "<tr class=\"light\">\n";
2658                }
2659                $alternate ^= 1;
2660                # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
2661                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2662                      "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
2663                      "<td>";
2664                print format_subject_html($co{'title'}, $co{'title_short'},
2665                                          href(action=>"commit", hash=>$commit), $ref);
2666                print "</td>\n" .
2667                      "<td class=\"link\">" .
2668                      $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
2669                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
2670                      $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
2671                if ($have_snapshot) {
2672                        print " | " . $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
2673                }
2674                print "</td>\n" .
2675                      "</tr>\n";
2676        }
2677        if (defined $extra) {
2678                print "<tr>\n" .
2679                      "<td colspan=\"4\">$extra</td>\n" .
2680                      "</tr>\n";
2681        }
2682        print "</table>\n";
2683}
2684
2685sub git_history_body {
2686        # Warning: assumes constant type (blob or tree) during history
2687        my ($revlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
2688
2689        $from = 0 unless defined $from;
2690        $to = $#{$revlist} unless (defined $to && $to <= $#{$revlist});
2691
2692        print "<table class=\"history\" cellspacing=\"0\">\n";
2693        my $alternate = 1;
2694        for (my $i = $from; $i <= $to; $i++) {
2695                if ($revlist->[$i] !~ m/^([0-9a-fA-F]{40})/) {
2696                        next;
2697                }
2698
2699                my $commit = $1;
2700                my %co = parse_commit($commit);
2701                if (!%co) {
2702                        next;
2703                }
2704
2705                my $ref = format_ref_marker($refs, $commit);
2706
2707                if ($alternate) {
2708                        print "<tr class=\"dark\">\n";
2709                } else {
2710                        print "<tr class=\"light\">\n";
2711                }
2712                $alternate ^= 1;
2713                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2714                      # shortlog uses      chop_str($co{'author_name'}, 10)
2715                      "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
2716                      "<td>";
2717                # originally git_history used chop_str($co{'title'}, 50)
2718                print format_subject_html($co{'title'}, $co{'title_short'},
2719                                          href(action=>"commit", hash=>$commit), $ref);
2720                print "</td>\n" .
2721                      "<td class=\"link\">" .
2722                      $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
2723                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
2724
2725                if ($ftype eq 'blob') {
2726                        my $blob_current = git_get_hash_by_path($hash_base, $file_name);
2727                        my $blob_parent  = git_get_hash_by_path($commit, $file_name);
2728                        if (defined $blob_current && defined $blob_parent &&
2729                                        $blob_current ne $blob_parent) {
2730                                print " | " .
2731                                        $cgi->a({-href => href(action=>"blobdiff",
2732                                                               hash=>$blob_current, hash_parent=>$blob_parent,
2733                                                               hash_base=>$hash_base, hash_parent_base=>$commit,
2734                                                               file_name=>$file_name)},
2735                                                "diff to current");
2736                        }
2737                }
2738                print "</td>\n" .
2739                      "</tr>\n";
2740        }
2741        if (defined $extra) {
2742                print "<tr>\n" .
2743                      "<td colspan=\"4\">$extra</td>\n" .
2744                      "</tr>\n";
2745        }
2746        print "</table>\n";
2747}
2748
2749sub git_tags_body {
2750        # uses global variable $project
2751        my ($taglist, $from, $to, $extra) = @_;
2752        $from = 0 unless defined $from;
2753        $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
2754
2755        print "<table class=\"tags\" cellspacing=\"0\">\n";
2756        my $alternate = 1;
2757        for (my $i = $from; $i <= $to; $i++) {
2758                my $entry = $taglist->[$i];
2759                my %tag = %$entry;
2760                my $comment = $tag{'subject'};
2761                my $comment_short;
2762                if (defined $comment) {
2763                        $comment_short = chop_str($comment, 30, 5);
2764                }
2765                if ($alternate) {
2766                        print "<tr class=\"dark\">\n";
2767                } else {
2768                        print "<tr class=\"light\">\n";
2769                }
2770                $alternate ^= 1;
2771                print "<td><i>$tag{'age'}</i></td>\n" .
2772                      "<td>" .
2773                      $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
2774                               -class => "list name"}, esc_html($tag{'name'})) .
2775                      "</td>\n" .
2776                      "<td>";
2777                if (defined $comment) {
2778                        print format_subject_html($comment, $comment_short,
2779                                                  href(action=>"tag", hash=>$tag{'id'}));
2780                }
2781                print "</td>\n" .
2782                      "<td class=\"selflink\">";
2783                if ($tag{'type'} eq "tag") {
2784                        print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
2785                } else {
2786                        print "&nbsp;";
2787                }
2788                print "</td>\n" .
2789                      "<td class=\"link\">" . " | " .
2790                      $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
2791                if ($tag{'reftype'} eq "commit") {
2792                        print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
2793                              " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log");
2794                } elsif ($tag{'reftype'} eq "blob") {
2795                        print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
2796                }
2797                print "</td>\n" .
2798                      "</tr>";
2799        }
2800        if (defined $extra) {
2801                print "<tr>\n" .
2802                      "<td colspan=\"5\">$extra</td>\n" .
2803                      "</tr>\n";
2804        }
2805        print "</table>\n";
2806}
2807
2808sub git_heads_body {
2809        # uses global variable $project
2810        my ($headlist, $head, $from, $to, $extra) = @_;
2811        $from = 0 unless defined $from;
2812        $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
2813
2814        print "<table class=\"heads\" cellspacing=\"0\">\n";
2815        my $alternate = 1;
2816        for (my $i = $from; $i <= $to; $i++) {
2817                my $entry = $headlist->[$i];
2818                my %ref = %$entry;
2819                my $curr = $ref{'id'} eq $head;
2820                if ($alternate) {
2821                        print "<tr class=\"dark\">\n";
2822                } else {
2823                        print "<tr class=\"light\">\n";
2824                }
2825                $alternate ^= 1;
2826                print "<td><i>$ref{'age'}</i></td>\n" .
2827                      ($curr ? "<td class=\"current_head\">" : "<td>") .
2828                      $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'}),
2829                               -class => "list name"},esc_html($ref{'name'})) .
2830                      "</td>\n" .
2831                      "<td class=\"link\">" .
2832                      $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'})}, "shortlog") . " | " .
2833                      $cgi->a({-href => href(action=>"log", hash=>$ref{'name'})}, "log") . " | " .
2834                      $cgi->a({-href => href(action=>"tree", hash=>$ref{'name'}, hash_base=>$ref{'name'})}, "tree") .
2835                      "</td>\n" .
2836                      "</tr>";
2837        }
2838        if (defined $extra) {
2839                print "<tr>\n" .
2840                      "<td colspan=\"3\">$extra</td>\n" .
2841                      "</tr>\n";
2842        }
2843        print "</table>\n";
2844}
2845
2846## ======================================================================
2847## ======================================================================
2848## actions
2849
2850sub git_project_list {
2851        my $order = $cgi->param('o');
2852        if (defined $order && $order !~ m/project|descr|owner|age/) {
2853                die_error(undef, "Unknown order parameter");
2854        }
2855
2856        my @list = git_get_projects_list();
2857        if (!@list) {
2858                die_error(undef, "No projects found");
2859        }
2860
2861        git_header_html();
2862        if (-f $home_text) {
2863                print "<div class=\"index_include\">\n";
2864                open (my $fd, $home_text);
2865                print <$fd>;
2866                close $fd;
2867                print "</div>\n";
2868        }
2869        git_project_list_body(\@list, $order);
2870        git_footer_html();
2871}
2872
2873sub git_forks {
2874        my $order = $cgi->param('o');
2875        if (defined $order && $order !~ m/project|descr|owner|age/) {
2876                die_error(undef, "Unknown order parameter");
2877        }
2878
2879        my @list = git_get_projects_list($project);
2880        if (!@list) {
2881                die_error(undef, "No forks found");
2882        }
2883
2884        git_header_html();
2885        git_print_page_nav('','');
2886        git_print_header_div('summary', "$project forks");
2887        git_project_list_body(\@list, $order);
2888        git_footer_html();
2889}
2890
2891sub git_project_index {
2892        my @projects = git_get_projects_list($project);
2893
2894        print $cgi->header(
2895                -type => 'text/plain',
2896                -charset => 'utf-8',
2897                -content_disposition => 'inline; filename="index.aux"');
2898
2899        foreach my $pr (@projects) {
2900                if (!exists $pr->{'owner'}) {
2901                        $pr->{'owner'} = get_file_owner("$projectroot/$project");
2902                }
2903
2904                my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
2905                # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
2906                $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
2907                $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
2908                $path  =~ s/ /\+/g;
2909                $owner =~ s/ /\+/g;
2910
2911                print "$path $owner\n";
2912        }
2913}
2914
2915sub git_summary {
2916        my $descr = git_get_project_description($project) || "none";
2917        my %co = parse_commit("HEAD");
2918        my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
2919        my $head = $co{'id'};
2920
2921        my $owner = git_get_project_owner($project);
2922
2923        my $refs = git_get_references();
2924        # These get_*_list functions return one more to allow us to see if
2925        # there are more ...
2926        my @taglist  = git_get_tags_list(16);
2927        my @headlist = git_get_heads_list(16);
2928        my @forklist;
2929        my ($check_forks) = gitweb_check_feature('forks');
2930
2931        if ($check_forks) {
2932                @forklist = git_get_projects_list($project);
2933        }
2934
2935        git_header_html();
2936        git_print_page_nav('summary','', $head);
2937
2938        print "<div class=\"title\">&nbsp;</div>\n";
2939        print "<table cellspacing=\"0\">\n" .
2940              "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
2941              "<tr><td>owner</td><td>$owner</td></tr>\n" .
2942              "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
2943        # use per project git URL list in $projectroot/$project/cloneurl
2944        # or make project git URL from git base URL and project name
2945        my $url_tag = "URL";
2946        my @url_list = git_get_project_url_list($project);
2947        @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
2948        foreach my $git_url (@url_list) {
2949                next unless $git_url;
2950                print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
2951                $url_tag = "";
2952        }
2953        print "</table>\n";
2954
2955        if (-s "$projectroot/$project/README.html") {
2956                if (open my $fd, "$projectroot/$project/README.html") {
2957                        print "<div class=\"title\">readme</div>\n";
2958                        print $_ while (<$fd>);
2959                        close $fd;
2960                }
2961        }
2962
2963        # we need to request one more than 16 (0..15) to check if
2964        # those 16 are all
2965        open my $fd, "-|", git_cmd(), "rev-list", "--max-count=17",
2966                $head, "--"
2967                or die_error(undef, "Open git-rev-list failed");
2968        my @revlist = map { chomp; $_ } <$fd>;
2969        close $fd;
2970        git_print_header_div('shortlog');
2971        git_shortlog_body(\@revlist, 0, 15, $refs,
2972                          $#revlist <=  15 ? undef :
2973                          $cgi->a({-href => href(action=>"shortlog")}, "..."));
2974
2975        if (@taglist) {
2976                git_print_header_div('tags');
2977                git_tags_body(\@taglist, 0, 15,
2978                              $#taglist <=  15 ? undef :
2979                              $cgi->a({-href => href(action=>"tags")}, "..."));
2980        }
2981
2982        if (@headlist) {
2983                git_print_header_div('heads');
2984                git_heads_body(\@headlist, $head, 0, 15,
2985                               $#headlist <= 15 ? undef :
2986                               $cgi->a({-href => href(action=>"heads")}, "..."));
2987        }
2988
2989        if (@forklist) {
2990                git_print_header_div('forks');
2991                git_project_list_body(\@forklist, undef, 0, 15,
2992                                      $#forklist <= 15 ? undef :
2993                                      $cgi->a({-href => href(action=>"forks")}, "..."),
2994                                      'noheader');
2995        }
2996
2997        git_footer_html();
2998}
2999
3000sub git_tag {
3001        my $head = git_get_head_hash($project);
3002        git_header_html();
3003        git_print_page_nav('','', $head,undef,$head);
3004        my %tag = parse_tag($hash);
3005        git_print_header_div('commit', esc_html($tag{'name'}), $hash);
3006        print "<div class=\"title_text\">\n" .
3007              "<table cellspacing=\"0\">\n" .
3008              "<tr>\n" .
3009              "<td>object</td>\n" .
3010              "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3011                               $tag{'object'}) . "</td>\n" .
3012              "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3013                                              $tag{'type'}) . "</td>\n" .
3014              "</tr>\n";
3015        if (defined($tag{'author'})) {
3016                my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
3017                print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
3018                print "<tr><td></td><td>" . $ad{'rfc2822'} .
3019                        sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
3020                        "</td></tr>\n";
3021        }
3022        print "</table>\n\n" .
3023              "</div>\n";
3024        print "<div class=\"page_body\">";
3025        my $comment = $tag{'comment'};
3026        foreach my $line (@$comment) {
3027                chomp $line;
3028                print esc_html($line, -nbsp=>1) . "<br/>\n";
3029        }
3030        print "</div>\n";
3031        git_footer_html();
3032}
3033
3034sub git_blame2 {
3035        my $fd;
3036        my $ftype;
3037
3038        my ($have_blame) = gitweb_check_feature('blame');
3039        if (!$have_blame) {
3040                die_error('403 Permission denied', "Permission denied");
3041        }
3042        die_error('404 Not Found', "File name not defined") if (!$file_name);
3043        $hash_base ||= git_get_head_hash($project);
3044        die_error(undef, "Couldn't find base commit") unless ($hash_base);
3045        my %co = parse_commit($hash_base)
3046                or die_error(undef, "Reading commit failed");
3047        if (!defined $hash) {
3048                $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3049                        or die_error(undef, "Error looking up file");
3050        }
3051        $ftype = git_get_type($hash);
3052        if ($ftype !~ "blob") {
3053                die_error("400 Bad Request", "Object is not a blob");
3054        }
3055        open ($fd, "-|", git_cmd(), "blame", '-p', '--',
3056              $file_name, $hash_base)
3057                or die_error(undef, "Open git-blame failed");
3058        git_header_html();
3059        my $formats_nav =
3060                $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3061                        "blob") .
3062                " | " .
3063                $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3064                        "history") .
3065                " | " .
3066                $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3067                        "HEAD");
3068        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3069        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3070        git_print_page_path($file_name, $ftype, $hash_base);
3071        my @rev_color = (qw(light2 dark2));
3072        my $num_colors = scalar(@rev_color);
3073        my $current_color = 0;
3074        my $last_rev;
3075        print <<HTML;
3076<div class="page_body">
3077<table class="blame">
3078<tr><th>Commit</th><th>Line</th><th>Data</th></tr>
3079HTML
3080        my %metainfo = ();
3081        while (1) {
3082                $_ = <$fd>;
3083                last unless defined $_;
3084                my ($full_rev, $orig_lineno, $lineno, $group_size) =
3085                    /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
3086                if (!exists $metainfo{$full_rev}) {
3087                        $metainfo{$full_rev} = {};
3088                }
3089                my $meta = $metainfo{$full_rev};
3090                while (<$fd>) {
3091                        last if (s/^\t//);
3092                        if (/^(\S+) (.*)$/) {
3093                                $meta->{$1} = $2;
3094                        }
3095                }
3096                my $data = $_;
3097                chomp $data;
3098                my $rev = substr($full_rev, 0, 8);
3099                my $author = $meta->{'author'};
3100                my %date = parse_date($meta->{'author-time'},
3101                                      $meta->{'author-tz'});
3102                my $date = $date{'iso-tz'};
3103                if ($group_size) {
3104                        $current_color = ++$current_color % $num_colors;
3105                }
3106                print "<tr class=\"$rev_color[$current_color]\">\n";
3107                if ($group_size) {
3108                        print "<td class=\"sha1\"";
3109                        print " title=\"". esc_html($author) . ", $date\"";
3110                        print " rowspan=\"$group_size\"" if ($group_size > 1);
3111                        print ">";
3112                        print $cgi->a({-href => href(action=>"commit",
3113                                                     hash=>$full_rev,
3114                                                     file_name=>$file_name)},
3115                                      esc_html($rev));
3116                        print "</td>\n";
3117                }
3118                my $blamed = href(action => 'blame',
3119                                  file_name => $meta->{'filename'},
3120                                  hash_base => $full_rev);
3121                print "<td class=\"linenr\">";
3122                print $cgi->a({ -href => "$blamed#l$orig_lineno",
3123                                -id => "l$lineno",
3124                                -class => "linenr" },
3125                              esc_html($lineno));
3126                print "</td>";
3127                print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
3128                print "</tr>\n";
3129        }
3130        print "</table>\n";
3131        print "</div>";
3132        close $fd
3133                or print "Reading blob failed\n";
3134        git_footer_html();
3135}
3136
3137sub git_blame {
3138        my $fd;
3139
3140        my ($have_blame) = gitweb_check_feature('blame');
3141        if (!$have_blame) {
3142                die_error('403 Permission denied', "Permission denied");
3143        }
3144        die_error('404 Not Found', "File name not defined") if (!$file_name);
3145        $hash_base ||= git_get_head_hash($project);
3146        die_error(undef, "Couldn't find base commit") unless ($hash_base);
3147        my %co = parse_commit($hash_base)
3148                or die_error(undef, "Reading commit failed");
3149        if (!defined $hash) {
3150                $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3151                        or die_error(undef, "Error lookup file");
3152        }
3153        open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
3154                or die_error(undef, "Open git-annotate failed");
3155        git_header_html();
3156        my $formats_nav =
3157                $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3158                        "blob") .
3159                " | " .
3160                $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3161                        "history") .
3162                " | " .
3163                $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3164                        "HEAD");
3165        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3166        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3167        git_print_page_path($file_name, 'blob', $hash_base);
3168        print "<div class=\"page_body\">\n";
3169        print <<HTML;
3170<table class="blame">
3171  <tr>
3172    <th>Commit</th>
3173    <th>Age</th>
3174    <th>Author</th>
3175    <th>Line</th>
3176    <th>Data</th>
3177  </tr>
3178HTML
3179        my @line_class = (qw(light dark));
3180        my $line_class_len = scalar (@line_class);
3181        my $line_class_num = $#line_class;
3182        while (my $line = <$fd>) {
3183                my $long_rev;
3184                my $short_rev;
3185                my $author;
3186                my $time;
3187                my $lineno;
3188                my $data;
3189                my $age;
3190                my $age_str;
3191                my $age_class;
3192
3193                chomp $line;
3194                $line_class_num = ($line_class_num + 1) % $line_class_len;
3195
3196                if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
3197                        $long_rev = $1;
3198                        $author   = $2;
3199                        $time     = $3;
3200                        $lineno   = $4;
3201                        $data     = $5;
3202                } else {
3203                        print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
3204                        next;
3205                }
3206                $short_rev  = substr ($long_rev, 0, 8);
3207                $age        = time () - $time;
3208                $age_str    = age_string ($age);
3209                $age_str    =~ s/ /&nbsp;/g;
3210                $age_class  = age_class($age);
3211                $author     = esc_html ($author);
3212                $author     =~ s/ /&nbsp;/g;
3213
3214                $data = untabify($data);
3215                $data = esc_html ($data);
3216
3217                print <<HTML;
3218  <tr class="$line_class[$line_class_num]">
3219    <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
3220    <td class="$age_class">$age_str</td>
3221    <td>$author</td>
3222    <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
3223    <td class="pre">$data</td>
3224  </tr>
3225HTML
3226        } # while (my $line = <$fd>)
3227        print "</table>\n\n";
3228        close $fd
3229                or print "Reading blob failed.\n";
3230        print "</div>";
3231        git_footer_html();
3232}
3233
3234sub git_tags {
3235        my $head = git_get_head_hash($project);
3236        git_header_html();
3237        git_print_page_nav('','', $head,undef,$head);
3238        git_print_header_div('summary', $project);
3239
3240        my @tagslist = git_get_tags_list();
3241        if (@tagslist) {
3242                git_tags_body(\@tagslist);
3243        }
3244        git_footer_html();
3245}
3246
3247sub git_heads {
3248        my $head = git_get_head_hash($project);
3249        git_header_html();
3250        git_print_page_nav('','', $head,undef,$head);
3251        git_print_header_div('summary', $project);
3252
3253        my @headslist = git_get_heads_list();
3254        if (@headslist) {
3255                git_heads_body(\@headslist, $head);
3256        }
3257        git_footer_html();
3258}
3259
3260sub git_blob_plain {
3261        my $expires;
3262
3263        if (!defined $hash) {
3264                if (defined $file_name) {
3265                        my $base = $hash_base || git_get_head_hash($project);
3266                        $hash = git_get_hash_by_path($base, $file_name, "blob")
3267                                or die_error(undef, "Error lookup file");
3268                } else {
3269                        die_error(undef, "No file name defined");
3270                }
3271        } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3272                # blobs defined by non-textual hash id's can be cached
3273                $expires = "+1d";
3274        }
3275
3276        my $type = shift;
3277        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3278                or die_error(undef, "Couldn't cat $file_name, $hash");
3279
3280        $type ||= blob_mimetype($fd, $file_name);
3281
3282        # save as filename, even when no $file_name is given
3283        my $save_as = "$hash";
3284        if (defined $file_name) {
3285                $save_as = $file_name;
3286        } elsif ($type =~ m/^text\//) {
3287                $save_as .= '.txt';
3288        }
3289
3290        print $cgi->header(
3291                -type => "$type",
3292                -expires=>$expires,
3293                -content_disposition => 'inline; filename="' . "$save_as" . '"');
3294        undef $/;
3295        binmode STDOUT, ':raw';
3296        print <$fd>;
3297        binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3298        $/ = "\n";
3299        close $fd;
3300}
3301
3302sub git_blob {
3303        my $expires;
3304
3305        if (!defined $hash) {
3306                if (defined $file_name) {
3307                        my $base = $hash_base || git_get_head_hash($project);
3308                        $hash = git_get_hash_by_path($base, $file_name, "blob")
3309                                or die_error(undef, "Error lookup file");
3310                } else {
3311                        die_error(undef, "No file name defined");
3312                }
3313        } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3314                # blobs defined by non-textual hash id's can be cached
3315                $expires = "+1d";
3316        }
3317
3318        my ($have_blame) = gitweb_check_feature('blame');
3319        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3320                or die_error(undef, "Couldn't cat $file_name, $hash");
3321        my $mimetype = blob_mimetype($fd, $file_name);
3322        if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)!) {
3323                close $fd;
3324                return git_blob_plain($mimetype);
3325        }
3326        # we can have blame only for text/* mimetype
3327        $have_blame &&= ($mimetype =~ m!^text/!);
3328
3329        git_header_html(undef, $expires);
3330        my $formats_nav = '';
3331        if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3332                if (defined $file_name) {
3333                        if ($have_blame) {
3334                                $formats_nav .=
3335                                        $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
3336                                                               hash=>$hash, file_name=>$file_name)},
3337                                                "blame") .
3338                                        " | ";
3339                        }
3340                        $formats_nav .=
3341                                $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3342                                                       hash=>$hash, file_name=>$file_name)},
3343                                        "history") .
3344                                " | " .
3345                                $cgi->a({-href => href(action=>"blob_plain",
3346                                                       hash=>$hash, file_name=>$file_name)},
3347                                        "raw") .
3348                                " | " .
3349                                $cgi->a({-href => href(action=>"blob",
3350                                                       hash_base=>"HEAD", file_name=>$file_name)},
3351                                        "HEAD");
3352                } else {
3353                        $formats_nav .=
3354                                $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
3355                }
3356                git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3357                git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3358        } else {
3359                print "<div class=\"page_nav\">\n" .
3360                      "<br/><br/></div>\n" .
3361                      "<div class=\"title\">$hash</div>\n";
3362        }
3363        git_print_page_path($file_name, "blob", $hash_base);
3364        print "<div class=\"page_body\">\n";
3365        if ($mimetype =~ m!^text/!) {
3366                my $nr;
3367                while (my $line = <$fd>) {
3368                        chomp $line;
3369                        $nr++;
3370                        $line = untabify($line);
3371                        printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
3372                               $nr, $nr, $nr, esc_html($line, -nbsp=>1);
3373                }
3374        } elsif ($mimetype =~ m!^image/!) {
3375                print qq!<img type="$mimetype"!;
3376                if ($file_name) {
3377                        print qq! alt="$file_name" title="$file_name"!;
3378                }
3379                print qq! src="! .
3380                      href(action=>"blob_plain", hash=>$hash,
3381                           hash_base=>$hash_base, file_name=>$file_name) .
3382                      qq!" />\n!;
3383        }
3384        close $fd
3385                or print "Reading blob failed.\n";
3386        print "</div>";
3387        git_footer_html();
3388}
3389
3390sub git_tree {
3391        my $have_snapshot = gitweb_have_snapshot();
3392
3393        if (!defined $hash_base) {
3394                $hash_base = "HEAD";
3395        }
3396        if (!defined $hash) {
3397                if (defined $file_name) {
3398                        $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
3399                } else {
3400                        $hash = $hash_base;
3401                }
3402        }
3403        $/ = "\0";
3404        open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
3405                or die_error(undef, "Open git-ls-tree failed");
3406        my @entries = map { chomp; $_ } <$fd>;
3407        close $fd or die_error(undef, "Reading tree failed");
3408        $/ = "\n";
3409
3410        my $refs = git_get_references();
3411        my $ref = format_ref_marker($refs, $hash_base);
3412        git_header_html();
3413        my $basedir = '';
3414        my ($have_blame) = gitweb_check_feature('blame');
3415        if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3416                my @views_nav = ();
3417                if (defined $file_name) {
3418                        push @views_nav,
3419                                $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3420                                                       hash=>$hash, file_name=>$file_name)},
3421                                        "history"),
3422                                $cgi->a({-href => href(action=>"tree",
3423                                                       hash_base=>"HEAD", file_name=>$file_name)},
3424                                        "HEAD"),
3425                }
3426                if ($have_snapshot) {
3427                        # FIXME: Should be available when we have no hash base as well.
3428                        push @views_nav,
3429                                $cgi->a({-href => href(action=>"snapshot", hash=>$hash)},
3430                                        "snapshot");
3431                }
3432                git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
3433                git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
3434        } else {
3435                undef $hash_base;
3436                print "<div class=\"page_nav\">\n";
3437                print "<br/><br/></div>\n";
3438                print "<div class=\"title\">$hash</div>\n";
3439        }
3440        if (defined $file_name) {
3441                $basedir = $file_name;
3442                if ($basedir ne '' && substr($basedir, -1) ne '/') {
3443                        $basedir .= '/';
3444                }
3445        }
3446        git_print_page_path($file_name, 'tree', $hash_base);
3447        print "<div class=\"page_body\">\n";
3448        print "<table cellspacing=\"0\">\n";
3449        my $alternate = 1;
3450        # '..' (top directory) link if possible
3451        if (defined $hash_base &&
3452            defined $file_name && $file_name =~ m![^/]+$!) {
3453                if ($alternate) {
3454                        print "<tr class=\"dark\">\n";
3455                } else {
3456                        print "<tr class=\"light\">\n";
3457                }
3458                $alternate ^= 1;
3459
3460                my $up = $file_name;
3461                $up =~ s!/?[^/]+$!!;
3462                undef $up unless $up;
3463                # based on git_print_tree_entry
3464                print '<td class="mode">' . mode_str('040000') . "</td>\n";
3465                print '<td class="list">';
3466                print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
3467                                             file_name=>$up)},
3468                              "..");
3469                print "</td>\n";
3470                print "<td class=\"link\"></td>\n";
3471
3472                print "</tr>\n";
3473        }
3474        foreach my $line (@entries) {
3475                my %t = parse_ls_tree_line($line, -z => 1);
3476
3477                if ($alternate) {
3478                        print "<tr class=\"dark\">\n";
3479                } else {
3480                        print "<tr class=\"light\">\n";
3481                }
3482                $alternate ^= 1;
3483
3484                git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
3485
3486                print "</tr>\n";
3487        }
3488        print "</table>\n" .
3489              "</div>";
3490        git_footer_html();
3491}
3492
3493sub git_snapshot {
3494        my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
3495        my $have_snapshot = (defined $ctype && defined $suffix);
3496        if (!$have_snapshot) {
3497                die_error('403 Permission denied', "Permission denied");
3498        }
3499
3500        if (!defined $hash) {
3501                $hash = git_get_head_hash($project);
3502        }
3503
3504        my $filename = basename($project) . "-$hash.tar.$suffix";
3505
3506        print $cgi->header(
3507                -type => "application/$ctype",
3508                -content_disposition => 'inline; filename="' . "$filename" . '"',
3509                -status => '200 OK');
3510
3511        my $git = git_cmd_str();
3512        my $name = $project;
3513        $name =~ s/\047/\047\\\047\047/g;
3514        open my $fd, "-|",
3515        "$git archive --format=tar --prefix=\'$name\'/ $hash | $command"
3516                or die_error(undef, "Execute git-tar-tree failed.");
3517        binmode STDOUT, ':raw';
3518        print <$fd>;
3519        binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3520        close $fd;
3521
3522}
3523
3524sub git_log {
3525        my $head = git_get_head_hash($project);
3526        if (!defined $hash) {
3527                $hash = $head;
3528        }
3529        if (!defined $page) {
3530                $page = 0;
3531        }
3532        my $refs = git_get_references();
3533
3534        my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3535        open my $fd, "-|", git_cmd(), "rev-list", $limit, $hash, "--"
3536                or die_error(undef, "Open git-rev-list failed");
3537        my @revlist = map { chomp; $_ } <$fd>;
3538        close $fd;
3539
3540        my $paging_nav = format_paging_nav('log', $hash, $head, $page, $#revlist);
3541
3542        git_header_html();
3543        git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
3544
3545        if (!@revlist) {
3546                my %co = parse_commit($hash);
3547
3548                git_print_header_div('summary', $project);
3549                print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
3550        }
3551        for (my $i = ($page * 100); $i <= $#revlist; $i++) {
3552                my $commit = $revlist[$i];
3553                my $ref = format_ref_marker($refs, $commit);
3554                my %co = parse_commit($commit);
3555                next if !%co;
3556                my %ad = parse_date($co{'author_epoch'});
3557                git_print_header_div('commit',
3558                               "<span class=\"age\">$co{'age_string'}</span>" .
3559                               esc_html($co{'title'}) . $ref,
3560                               $commit);
3561                print "<div class=\"title_text\">\n" .
3562                      "<div class=\"log_link\">\n" .
3563                      $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
3564                      " | " .
3565                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
3566                      " | " .
3567                      $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
3568                      "<br/>\n" .
3569                      "</div>\n" .
3570                      "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
3571                      "</div>\n";
3572
3573                print "<div class=\"log_body\">\n";
3574                git_print_log($co{'comment'}, -final_empty_line=> 1);
3575                print "</div>\n";
3576        }
3577        git_footer_html();
3578}
3579
3580sub git_commit {
3581        $hash ||= $hash_base || "HEAD";
3582        my %co = parse_commit($hash);
3583        if (!%co) {
3584                die_error(undef, "Unknown commit object");
3585        }
3586        my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
3587        my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
3588
3589        my $parent  = $co{'parent'};
3590        my $parents = $co{'parents'}; # listref
3591
3592        # we need to prepare $formats_nav before any parameter munging
3593        my $formats_nav;
3594        if (!defined $parent) {
3595                # --root commitdiff
3596                $formats_nav .= '(initial)';
3597        } elsif (@$parents == 1) {
3598                # single parent commit
3599                $formats_nav .=
3600                        '(parent: ' .
3601                        $cgi->a({-href => href(action=>"commit",
3602                                               hash=>$parent)},
3603                                esc_html(substr($parent, 0, 7))) .
3604                        ')';
3605        } else {
3606                # merge commit
3607                $formats_nav .=
3608                        '(merge: ' .
3609                        join(' ', map {
3610                                $cgi->a({-href => href(action=>"commitdiff",
3611                                                       hash=>$_)},
3612                                        esc_html(substr($_, 0, 7)));
3613                        } @$parents ) .
3614                        ')';
3615        }
3616
3617        if (!defined $parent) {
3618                $parent = "--root";
3619        }
3620        my @difftree;
3621        if (@$parents <= 1) {
3622                # difftree output is not printed for merges
3623                open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
3624                        @diff_opts, $parent, $hash, "--"
3625                                or die_error(undef, "Open git-diff-tree failed");
3626                @difftree = map { chomp; $_ } <$fd>;
3627                close $fd or die_error(undef, "Reading git-diff-tree failed");
3628        }
3629
3630        # non-textual hash id's can be cached
3631        my $expires;
3632        if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3633                $expires = "+1d";
3634        }
3635        my $refs = git_get_references();
3636        my $ref = format_ref_marker($refs, $co{'id'});
3637
3638        my $have_snapshot = gitweb_have_snapshot();
3639
3640        git_header_html(undef, $expires);
3641        git_print_page_nav('commit', '',
3642                           $hash, $co{'tree'}, $hash,
3643                           $formats_nav);
3644
3645        if (defined $co{'parent'}) {
3646                git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
3647        } else {
3648                git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
3649        }
3650        print "<div class=\"title_text\">\n" .
3651              "<table cellspacing=\"0\">\n";
3652        print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
3653              "<tr>" .
3654              "<td></td><td> $ad{'rfc2822'}";
3655        if ($ad{'hour_local'} < 6) {
3656                printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
3657                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
3658        } else {
3659                printf(" (%02d:%02d %s)",
3660                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
3661        }
3662        print "</td>" .
3663              "</tr>\n";
3664        print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
3665        print "<tr><td></td><td> $cd{'rfc2822'}" .
3666              sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
3667              "</td></tr>\n";
3668        print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
3669        print "<tr>" .
3670              "<td>tree</td>" .
3671              "<td class=\"sha1\">" .
3672              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
3673                       class => "list"}, $co{'tree'}) .
3674              "</td>" .
3675              "<td class=\"link\">" .
3676              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
3677                      "tree");
3678        if ($have_snapshot) {
3679                print " | " .
3680                      $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
3681        }
3682        print "</td>" .
3683              "</tr>\n";
3684
3685        foreach my $par (@$parents) {
3686                print "<tr>" .
3687                      "<td>parent</td>" .
3688                      "<td class=\"sha1\">" .
3689                      $cgi->a({-href => href(action=>"commit", hash=>$par),
3690                               class => "list"}, $par) .
3691                      "</td>" .
3692                      "<td class=\"link\">" .
3693                      $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
3694                      " | " .
3695                      $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
3696                      "</td>" .
3697                      "</tr>\n";
3698        }
3699        print "</table>".
3700              "</div>\n";
3701
3702        print "<div class=\"page_body\">\n";
3703        git_print_log($co{'comment'});
3704        print "</div>\n";
3705
3706        if (@$parents <= 1) {
3707                # do not output difftree/whatchanged for merges
3708                git_difftree_body(\@difftree, $hash, $parent);
3709        }
3710
3711        git_footer_html();
3712}
3713
3714sub git_object {
3715        # object is defined by:
3716        # - hash or hash_base alone
3717        # - hash_base and file_name
3718        my $type;
3719
3720        # - hash or hash_base alone
3721        if ($hash || ($hash_base && !defined $file_name)) {
3722                my $object_id = $hash || $hash_base;
3723
3724                my $git_command = git_cmd_str();
3725                open my $fd, "-|", "$git_command cat-file -t $object_id 2>/dev/null"
3726                        or die_error('404 Not Found', "Object does not exist");
3727                $type = <$fd>;
3728                chomp $type;
3729                close $fd
3730                        or die_error('404 Not Found', "Object does not exist");
3731
3732        # - hash_base and file_name
3733        } elsif ($hash_base && defined $file_name) {
3734                $file_name =~ s,/+$,,;
3735
3736                system(git_cmd(), "cat-file", '-e', $hash_base) == 0
3737                        or die_error('404 Not Found', "Base object does not exist");
3738
3739                # here errors should not hapen
3740                open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
3741                        or die_error(undef, "Open git-ls-tree failed");
3742                my $line = <$fd>;
3743                close $fd;
3744
3745                #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
3746                unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
3747                        die_error('404 Not Found', "File or directory for given base does not exist");
3748                }
3749                $type = $2;
3750                $hash = $3;
3751        } else {
3752                die_error('404 Not Found', "Not enough information to find object");
3753        }
3754
3755        print $cgi->redirect(-uri => href(action=>$type, -full=>1,
3756                                          hash=>$hash, hash_base=>$hash_base,
3757                                          file_name=>$file_name),
3758                             -status => '302 Found');
3759}
3760
3761sub git_blobdiff {
3762        my $format = shift || 'html';
3763
3764        my $fd;
3765        my @difftree;
3766        my %diffinfo;
3767        my $expires;
3768
3769        # preparing $fd and %diffinfo for git_patchset_body
3770        # new style URI
3771        if (defined $hash_base && defined $hash_parent_base) {
3772                if (defined $file_name) {
3773                        # read raw output
3774                        open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3775                                $hash_parent_base, $hash_base,
3776                                "--", $file_name
3777                                or die_error(undef, "Open git-diff-tree failed");
3778                        @difftree = map { chomp; $_ } <$fd>;
3779                        close $fd
3780                                or die_error(undef, "Reading git-diff-tree failed");
3781                        @difftree
3782                                or die_error('404 Not Found', "Blob diff not found");
3783
3784                } elsif (defined $hash &&
3785                         $hash =~ /[0-9a-fA-F]{40}/) {
3786                        # try to find filename from $hash
3787
3788                        # read filtered raw output
3789                        open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3790                                $hash_parent_base, $hash_base, "--"
3791                                or die_error(undef, "Open git-diff-tree failed");
3792                        @difftree =
3793                                # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
3794                                # $hash == to_id
3795                                grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
3796                                map { chomp; $_ } <$fd>;
3797                        close $fd
3798                                or die_error(undef, "Reading git-diff-tree failed");
3799                        @difftree
3800                                or die_error('404 Not Found', "Blob diff not found");
3801
3802                } else {
3803                        die_error('404 Not Found', "Missing one of the blob diff parameters");
3804                }
3805
3806                if (@difftree > 1) {
3807                        die_error('404 Not Found', "Ambiguous blob diff specification");
3808                }
3809
3810                %diffinfo = parse_difftree_raw_line($difftree[0]);
3811                $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
3812                $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
3813
3814                $hash_parent ||= $diffinfo{'from_id'};
3815                $hash        ||= $diffinfo{'to_id'};
3816
3817                # non-textual hash id's can be cached
3818                if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
3819                    $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
3820                        $expires = '+1d';
3821                }
3822
3823                # open patch output
3824                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3825                        '-p', $hash_parent_base, $hash_base,
3826                        "--", $file_name
3827                        or die_error(undef, "Open git-diff-tree failed");
3828        }
3829
3830        # old/legacy style URI
3831        if (!%diffinfo && # if new style URI failed
3832            defined $hash && defined $hash_parent) {
3833                # fake git-diff-tree raw output
3834                $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
3835                $diffinfo{'from_id'} = $hash_parent;
3836                $diffinfo{'to_id'}   = $hash;
3837                if (defined $file_name) {
3838                        if (defined $file_parent) {
3839                                $diffinfo{'status'} = '2';
3840                                $diffinfo{'from_file'} = $file_parent;
3841                                $diffinfo{'to_file'}   = $file_name;
3842                        } else { # assume not renamed
3843                                $diffinfo{'status'} = '1';
3844                                $diffinfo{'from_file'} = $file_name;
3845                                $diffinfo{'to_file'}   = $file_name;
3846                        }
3847                } else { # no filename given
3848                        $diffinfo{'status'} = '2';
3849                        $diffinfo{'from_file'} = $hash_parent;
3850                        $diffinfo{'to_file'}   = $hash;
3851                }
3852
3853                # non-textual hash id's can be cached
3854                if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
3855                    $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
3856                        $expires = '+1d';
3857                }
3858
3859                # open patch output
3860                open $fd, "-|", git_cmd(), "diff", '-p', @diff_opts,
3861                        $hash_parent, $hash, "--"
3862                        or die_error(undef, "Open git-diff failed");
3863        } else  {
3864                die_error('404 Not Found', "Missing one of the blob diff parameters")
3865                        unless %diffinfo;
3866        }
3867
3868        # header
3869        if ($format eq 'html') {
3870                my $formats_nav =
3871                        $cgi->a({-href => href(action=>"blobdiff_plain",
3872                                               hash=>$hash, hash_parent=>$hash_parent,
3873                                               hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
3874                                               file_name=>$file_name, file_parent=>$file_parent)},
3875                                "raw");
3876                git_header_html(undef, $expires);
3877                if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3878                        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3879                        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3880                } else {
3881                        print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
3882                        print "<div class=\"title\">$hash vs $hash_parent</div>\n";
3883                }
3884                if (defined $file_name) {
3885                        git_print_page_path($file_name, "blob", $hash_base);
3886                } else {
3887                        print "<div class=\"page_path\"></div>\n";
3888                }
3889
3890        } elsif ($format eq 'plain') {
3891                print $cgi->header(
3892                        -type => 'text/plain',
3893                        -charset => 'utf-8',
3894                        -expires => $expires,
3895                        -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
3896
3897                print "X-Git-Url: " . $cgi->self_url() . "\n\n";
3898
3899        } else {
3900                die_error(undef, "Unknown blobdiff format");
3901        }
3902
3903        # patch
3904        if ($format eq 'html') {
3905                print "<div class=\"page_body\">\n";
3906
3907                git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
3908                close $fd;
3909
3910                print "</div>\n"; # class="page_body"
3911                git_footer_html();
3912
3913        } else {
3914                while (my $line = <$fd>) {
3915                        $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
3916                        $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
3917
3918                        print $line;
3919
3920                        last if $line =~ m!^\+\+\+!;
3921                }
3922                local $/ = undef;
3923                print <$fd>;
3924                close $fd;
3925        }
3926}
3927
3928sub git_blobdiff_plain {
3929        git_blobdiff('plain');
3930}
3931
3932sub git_commitdiff {
3933        my $format = shift || 'html';
3934        $hash ||= $hash_base || "HEAD";
3935        my %co = parse_commit($hash);
3936        if (!%co) {
3937                die_error(undef, "Unknown commit object");
3938        }
3939
3940        # we need to prepare $formats_nav before any parameter munging
3941        my $formats_nav;
3942        if ($format eq 'html') {
3943                $formats_nav =
3944                        $cgi->a({-href => href(action=>"commitdiff_plain",
3945                                               hash=>$hash, hash_parent=>$hash_parent)},
3946                                "raw");
3947
3948                if (defined $hash_parent) {
3949                        # commitdiff with two commits given
3950                        my $hash_parent_short = $hash_parent;
3951                        if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
3952                                $hash_parent_short = substr($hash_parent, 0, 7);
3953                        }
3954                        $formats_nav .=
3955                                ' (from: ' .
3956                                $cgi->a({-href => href(action=>"commitdiff",
3957                                                       hash=>$hash_parent)},
3958                                        esc_html($hash_parent_short)) .
3959                                ')';
3960                } elsif (!$co{'parent'}) {
3961                        # --root commitdiff
3962                        $formats_nav .= ' (initial)';
3963                } elsif (scalar @{$co{'parents'}} == 1) {
3964                        # single parent commit
3965                        $formats_nav .=
3966                                ' (parent: ' .
3967                                $cgi->a({-href => href(action=>"commitdiff",
3968                                                       hash=>$co{'parent'})},
3969                                        esc_html(substr($co{'parent'}, 0, 7))) .
3970                                ')';
3971                } else {
3972                        # merge commit
3973                        $formats_nav .=
3974                                ' (merge: ' .
3975                                join(' ', map {
3976                                        $cgi->a({-href => href(action=>"commitdiff",
3977                                                               hash=>$_)},
3978                                                esc_html(substr($_, 0, 7)));
3979                                } @{$co{'parents'}} ) .
3980                                ')';
3981                }
3982        }
3983
3984        if (!defined $hash_parent) {
3985                $hash_parent = $co{'parent'} || '--root';
3986        }
3987
3988        # read commitdiff
3989        my $fd;
3990        my @difftree;
3991        if ($format eq 'html') {
3992                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3993                        "--no-commit-id", "--patch-with-raw", "--full-index",
3994                        $hash_parent, $hash, "--"
3995                        or die_error(undef, "Open git-diff-tree failed");
3996
3997                while (my $line = <$fd>) {
3998                        chomp $line;
3999                        # empty line ends raw part of diff-tree output
4000                        last unless $line;
4001                        push @difftree, $line;
4002                }
4003
4004        } elsif ($format eq 'plain') {
4005                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4006                        '-p', $hash_parent, $hash, "--"
4007                        or die_error(undef, "Open git-diff-tree failed");
4008
4009        } else {
4010                die_error(undef, "Unknown commitdiff format");
4011        }
4012
4013        # non-textual hash id's can be cached
4014        my $expires;
4015        if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4016                $expires = "+1d";
4017        }
4018
4019        # write commit message
4020        if ($format eq 'html') {
4021                my $refs = git_get_references();
4022                my $ref = format_ref_marker($refs, $co{'id'});
4023
4024                git_header_html(undef, $expires);
4025                git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
4026                git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
4027                git_print_authorship(\%co);
4028                print "<div class=\"page_body\">\n";
4029                if (@{$co{'comment'}} > 1) {
4030                        print "<div class=\"log\">\n";
4031                        git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
4032                        print "</div>\n"; # class="log"
4033                }
4034
4035        } elsif ($format eq 'plain') {
4036                my $refs = git_get_references("tags");
4037                my $tagname = git_get_rev_name_tags($hash);
4038                my $filename = basename($project) . "-$hash.patch";
4039
4040                print $cgi->header(
4041                        -type => 'text/plain',
4042                        -charset => 'utf-8',
4043                        -expires => $expires,
4044                        -content_disposition => 'inline; filename="' . "$filename" . '"');
4045                my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4046                print <<TEXT;
4047From: $co{'author'}
4048Date: $ad{'rfc2822'} ($ad{'tz_local'})
4049Subject: $co{'title'}
4050TEXT
4051                print "X-Git-Tag: $tagname\n" if $tagname;
4052                print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4053
4054                foreach my $line (@{$co{'comment'}}) {
4055                        print "$line\n";
4056                }
4057                print "---\n\n";
4058        }
4059
4060        # write patch
4061        if ($format eq 'html') {
4062                git_difftree_body(\@difftree, $hash, $hash_parent);
4063                print "<br/>\n";
4064
4065                git_patchset_body($fd, \@difftree, $hash, $hash_parent);
4066                close $fd;
4067                print "</div>\n"; # class="page_body"
4068                git_footer_html();
4069
4070        } elsif ($format eq 'plain') {
4071                local $/ = undef;
4072                print <$fd>;
4073                close $fd
4074                        or print "Reading git-diff-tree failed\n";
4075        }
4076}
4077
4078sub git_commitdiff_plain {
4079        git_commitdiff('plain');
4080}
4081
4082sub git_history {
4083        if (!defined $hash_base) {
4084                $hash_base = git_get_head_hash($project);
4085        }
4086        if (!defined $page) {
4087                $page = 0;
4088        }
4089        my $ftype;
4090        my %co = parse_commit($hash_base);
4091        if (!%co) {
4092                die_error(undef, "Unknown commit object");
4093        }
4094
4095        my $refs = git_get_references();
4096        my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
4097
4098        if (!defined $hash && defined $file_name) {
4099                $hash = git_get_hash_by_path($hash_base, $file_name);
4100        }
4101        if (defined $hash) {
4102                $ftype = git_get_type($hash);
4103        }
4104
4105        open my $fd, "-|",
4106                git_cmd(), "rev-list", $limit, "--full-history", $hash_base, "--", $file_name
4107                        or die_error(undef, "Open git-rev-list-failed");
4108        my @revlist = map { chomp; $_ } <$fd>;
4109        close $fd
4110                or die_error(undef, "Reading git-rev-list failed");
4111
4112        my $paging_nav = '';
4113        if ($page > 0) {
4114                $paging_nav .=
4115                        $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4116                                               file_name=>$file_name)},
4117                                "first");
4118                $paging_nav .= " &sdot; " .
4119                        $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4120                                               file_name=>$file_name, page=>$page-1),
4121                                 -accesskey => "p", -title => "Alt-p"}, "prev");
4122        } else {
4123                $paging_nav .= "first";
4124                $paging_nav .= " &sdot; prev";
4125        }
4126        if ($#revlist >= (100 * ($page+1)-1)) {
4127                $paging_nav .= " &sdot; " .
4128                        $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4129                                               file_name=>$file_name, page=>$page+1),
4130                                 -accesskey => "n", -title => "Alt-n"}, "next");
4131        } else {
4132                $paging_nav .= " &sdot; next";
4133        }
4134        my $next_link = '';
4135        if ($#revlist >= (100 * ($page+1)-1)) {
4136                $next_link =
4137                        $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4138                                               file_name=>$file_name, page=>$page+1),
4139                                 -title => "Alt-n"}, "next");
4140        }
4141
4142        git_header_html();
4143        git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
4144        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4145        git_print_page_path($file_name, $ftype, $hash_base);
4146
4147        git_history_body(\@revlist, ($page * 100), $#revlist,
4148                         $refs, $hash_base, $ftype, $next_link);
4149
4150        git_footer_html();
4151}
4152
4153sub git_search {
4154        if (!defined $searchtext) {
4155                die_error(undef, "Text field empty");
4156        }
4157        if (!defined $hash) {
4158                $hash = git_get_head_hash($project);
4159        }
4160        my %co = parse_commit($hash);
4161        if (!%co) {
4162                die_error(undef, "Unknown commit object");
4163        }
4164
4165        $searchtype ||= 'commit';
4166        if ($searchtype eq 'pickaxe') {
4167                # pickaxe may take all resources of your box and run for several minutes
4168                # with every query - so decide by yourself how public you make this feature
4169                my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4170                if (!$have_pickaxe) {
4171                        die_error('403 Permission denied', "Permission denied");
4172                }
4173        }
4174
4175        git_header_html();
4176        git_print_page_nav('','', $hash,$co{'tree'},$hash);
4177        git_print_header_div('commit', esc_html($co{'title'}), $hash);
4178
4179        print "<table cellspacing=\"0\">\n";
4180        my $alternate = 1;
4181        if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
4182                my $greptype;
4183                if ($searchtype eq 'commit') {
4184                        $greptype = "--grep=";
4185                } elsif ($searchtype eq 'author') {
4186                        $greptype = "--author=";
4187                } elsif ($searchtype eq 'committer') {
4188                        $greptype = "--committer=";
4189                }
4190                $/ = "\0";
4191                open my $fd, "-|", git_cmd(), "rev-list",
4192                        "--header", "--parents", ($greptype . $searchtext),
4193                         $hash, "--"
4194                        or next;
4195                while (my $commit_text = <$fd>) {
4196                        my @commit_lines = split "\n", $commit_text;
4197                        my %co = parse_commit(undef, \@commit_lines);
4198                        if (!%co) {
4199                                next;
4200                        }
4201                        if ($alternate) {
4202                                print "<tr class=\"dark\">\n";
4203                        } else {
4204                                print "<tr class=\"light\">\n";
4205                        }
4206                        $alternate ^= 1;
4207                        print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
4208                              "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
4209                              "<td>" .
4210                              $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
4211                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
4212                        my $comment = $co{'comment'};
4213                        foreach my $line (@$comment) {
4214                                if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
4215                                        my $lead = esc_html($1) || "";
4216                                        $lead = chop_str($lead, 30, 10);
4217                                        my $match = esc_html($2) || "";
4218                                        my $trail = esc_html($3) || "";
4219                                        $trail = chop_str($trail, 30, 10);
4220                                        my $text = "$lead<span class=\"match\">$match</span>$trail";
4221                                        print chop_str($text, 80, 5) . "<br/>\n";
4222                                }
4223                        }
4224                        print "</td>\n" .
4225                              "<td class=\"link\">" .
4226                              $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
4227                              " | " .
4228                              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
4229                        print "</td>\n" .
4230                              "</tr>\n";
4231                }
4232                close $fd;
4233        }
4234
4235        if ($searchtype eq 'pickaxe') {
4236                $/ = "\n";
4237                my $git_command = git_cmd_str();
4238                open my $fd, "-|", "$git_command rev-list $hash | " .
4239                        "$git_command diff-tree -r --stdin -S\'$searchtext\'";
4240                undef %co;
4241                my @files;
4242                while (my $line = <$fd>) {
4243                        if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
4244                                my %set;
4245                                $set{'file'} = $6;
4246                                $set{'from_id'} = $3;
4247                                $set{'to_id'} = $4;
4248                                $set{'id'} = $set{'to_id'};
4249                                if ($set{'id'} =~ m/0{40}/) {
4250                                        $set{'id'} = $set{'from_id'};
4251                                }
4252                                if ($set{'id'} =~ m/0{40}/) {
4253                                        next;
4254                                }
4255                                push @files, \%set;
4256                        } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
4257                                if (%co) {
4258                                        if ($alternate) {
4259                                                print "<tr class=\"dark\">\n";
4260                                        } else {
4261                                                print "<tr class=\"light\">\n";
4262                                        }
4263                                        $alternate ^= 1;
4264                                        print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
4265                                              "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
4266                                              "<td>" .
4267                                              $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
4268                                                      -class => "list subject"},
4269                                                      esc_html(chop_str($co{'title'}, 50)) . "<br/>");
4270                                        while (my $setref = shift @files) {
4271                                                my %set = %$setref;
4272                                                print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
4273                                                                             hash=>$set{'id'}, file_name=>$set{'file'}),
4274                                                              -class => "list"},
4275                                                              "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
4276                                                      "<br/>\n";
4277                                        }
4278                                        print "</td>\n" .
4279                                              "<td class=\"link\">" .
4280                                              $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
4281                                              " | " .
4282                                              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
4283                                        print "</td>\n" .
4284                                              "</tr>\n";
4285                                }
4286                                %co = parse_commit($1);
4287                        }
4288                }
4289                close $fd;
4290        }
4291        print "</table>\n";
4292        git_footer_html();
4293}
4294
4295sub git_search_help {
4296        git_header_html();
4297        git_print_page_nav('','', $hash,$hash,$hash);
4298        print <<EOT;
4299<dl>
4300<dt><b>commit</b></dt>
4301<dd>The commit messages and authorship information will be scanned for the given string.</dd>
4302<dt><b>author</b></dt>
4303<dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
4304<dt><b>committer</b></dt>
4305<dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
4306EOT
4307        my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4308        if ($have_pickaxe) {
4309                print <<EOT;
4310<dt><b>pickaxe</b></dt>
4311<dd>All commits that caused the string to appear or disappear from any file (changes that
4312added, removed or "modified" the string) will be listed. This search can take a while and
4313takes a lot of strain on the server, so please use it wisely.</dd>
4314EOT
4315        }
4316        print "</dl>\n";
4317        git_footer_html();
4318}
4319
4320sub git_shortlog {
4321        my $head = git_get_head_hash($project);
4322        if (!defined $hash) {
4323                $hash = $head;
4324        }
4325        if (!defined $page) {
4326                $page = 0;
4327        }
4328        my $refs = git_get_references();
4329
4330        my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
4331        open my $fd, "-|", git_cmd(), "rev-list", $limit, $hash, "--"
4332                or die_error(undef, "Open git-rev-list failed");
4333        my @revlist = map { chomp; $_ } <$fd>;
4334        close $fd;
4335
4336        my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, $#revlist);
4337        my $next_link = '';
4338        if ($#revlist >= (100 * ($page+1)-1)) {
4339                $next_link =
4340                        $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
4341                                 -title => "Alt-n"}, "next");
4342        }
4343
4344
4345        git_header_html();
4346        git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
4347        git_print_header_div('summary', $project);
4348
4349        git_shortlog_body(\@revlist, ($page * 100), $#revlist, $refs, $next_link);
4350
4351        git_footer_html();
4352}
4353
4354## ......................................................................
4355## feeds (RSS, Atom; OPML)
4356
4357sub git_feed {
4358        my $format = shift || 'atom';
4359        my ($have_blame) = gitweb_check_feature('blame');
4360
4361        # Atom: http://www.atomenabled.org/developers/syndication/
4362        # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
4363        if ($format ne 'rss' && $format ne 'atom') {
4364                die_error(undef, "Unknown web feed format");
4365        }
4366
4367        # log/feed of current (HEAD) branch, log of given branch, history of file/directory
4368        my $head = $hash || 'HEAD';
4369        open my $fd, "-|", git_cmd(), "rev-list", "--max-count=150",
4370                $head, "--", (defined $file_name ? $file_name : ())
4371                or die_error(undef, "Open git-rev-list failed");
4372        my @revlist = map { chomp; $_ } <$fd>;
4373        close $fd or die_error(undef, "Reading git-rev-list failed");
4374
4375        my %latest_commit;
4376        my %latest_date;
4377        my $content_type = "application/$format+xml";
4378        if (defined $cgi->http('HTTP_ACCEPT') &&
4379                 $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
4380                # browser (feed reader) prefers text/xml
4381                $content_type = 'text/xml';
4382        }
4383        if (defined($revlist[0])) {
4384                %latest_commit = parse_commit($revlist[0]);
4385                %latest_date   = parse_date($latest_commit{'author_epoch'});
4386                print $cgi->header(
4387                        -type => $content_type,
4388                        -charset => 'utf-8',
4389                        -last_modified => $latest_date{'rfc2822'});
4390        } else {
4391                print $cgi->header(
4392                        -type => $content_type,
4393                        -charset => 'utf-8');
4394        }
4395
4396        # Optimization: skip generating the body if client asks only
4397        # for Last-Modified date.
4398        return if ($cgi->request_method() eq 'HEAD');
4399
4400        # header variables
4401        my $title = "$site_name - $project/$action";
4402        my $feed_type = 'log';
4403        if (defined $hash) {
4404                $title .= " - '$hash'";
4405                $feed_type = 'branch log';
4406                if (defined $file_name) {
4407                        $title .= " :: $file_name";
4408                        $feed_type = 'history';
4409                }
4410        } elsif (defined $file_name) {
4411                $title .= " - $file_name";
4412                $feed_type = 'history';
4413        }
4414        $title .= " $feed_type";
4415        my $descr = git_get_project_description($project);
4416        if (defined $descr) {
4417                $descr = esc_html($descr);
4418        } else {
4419                $descr = "$project " .
4420                         ($format eq 'rss' ? 'RSS' : 'Atom') .
4421                         " feed";
4422        }
4423        my $owner = git_get_project_owner($project);
4424        $owner = esc_html($owner);
4425
4426        #header
4427        my $alt_url;
4428        if (defined $file_name) {
4429                $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
4430        } elsif (defined $hash) {
4431                $alt_url = href(-full=>1, action=>"log", hash=>$hash);
4432        } else {
4433                $alt_url = href(-full=>1, action=>"summary");
4434        }
4435        print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
4436        if ($format eq 'rss') {
4437                print <<XML;
4438<rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
4439<channel>
4440XML
4441                print "<title>$title</title>\n" .
4442                      "<link>$alt_url</link>\n" .
4443                      "<description>$descr</description>\n" .
4444                      "<language>en</language>\n";
4445        } elsif ($format eq 'atom') {
4446                print <<XML;
4447<feed xmlns="http://www.w3.org/2005/Atom">
4448XML
4449                print "<title>$title</title>\n" .
4450                      "<subtitle>$descr</subtitle>\n" .
4451                      '<link rel="alternate" type="text/html" href="' .
4452                      $alt_url . '" />' . "\n" .
4453                      '<link rel="self" type="' . $content_type . '" href="' .
4454                      $cgi->self_url() . '" />' . "\n" .
4455                      "<id>" . href(-full=>1) . "</id>\n" .
4456                      # use project owner for feed author
4457                      "<author><name>$owner</name></author>\n";
4458                if (defined $favicon) {
4459                        print "<icon>" . esc_url($favicon) . "</icon>\n";
4460                }
4461                if (defined $logo_url) {
4462                        # not twice as wide as tall: 72 x 27 pixels
4463                        print "<logo>" . esc_url($logo) . "</logo>\n";
4464                }
4465                if (! %latest_date) {
4466                        # dummy date to keep the feed valid until commits trickle in:
4467                        print "<updated>1970-01-01T00:00:00Z</updated>\n";
4468                } else {
4469                        print "<updated>$latest_date{'iso-8601'}</updated>\n";
4470                }
4471        }
4472
4473        # contents
4474        for (my $i = 0; $i <= $#revlist; $i++) {
4475                my $commit = $revlist[$i];
4476                my %co = parse_commit($commit);
4477                # we read 150, we always show 30 and the ones more recent than 48 hours
4478                if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
4479                        last;
4480                }
4481                my %cd = parse_date($co{'author_epoch'});
4482
4483                # get list of changed files
4484                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4485                        $co{'parent'}, $co{'id'}, "--", (defined $file_name ? $file_name : ())
4486                        or next;
4487                my @difftree = map { chomp; $_ } <$fd>;
4488                close $fd
4489                        or next;
4490
4491                # print element (entry, item)
4492                my $co_url = href(-full=>1, action=>"commit", hash=>$commit);
4493                if ($format eq 'rss') {
4494                        print "<item>\n" .
4495                              "<title>" . esc_html($co{'title'}) . "</title>\n" .
4496                              "<author>" . esc_html($co{'author'}) . "</author>\n" .
4497                              "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
4498                              "<guid isPermaLink=\"true\">$co_url</guid>\n" .
4499                              "<link>$co_url</link>\n" .
4500                              "<description>" . esc_html($co{'title'}) . "</description>\n" .
4501                              "<content:encoded>" .
4502                              "<![CDATA[\n";
4503                } elsif ($format eq 'atom') {
4504                        print "<entry>\n" .
4505                              "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
4506                              "<updated>$cd{'iso-8601'}</updated>\n" .
4507                              "<author>\n" .
4508                              "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
4509                        if ($co{'author_email'}) {
4510                                print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
4511                        }
4512                        print "</author>\n" .
4513                              # use committer for contributor
4514                              "<contributor>\n" .
4515                              "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
4516                        if ($co{'committer_email'}) {
4517                                print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
4518                        }
4519                        print "</contributor>\n" .
4520                              "<published>$cd{'iso-8601'}</published>\n" .
4521                              "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
4522                              "<id>$co_url</id>\n" .
4523                              "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
4524                              "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
4525                }
4526                my $comment = $co{'comment'};
4527                print "<pre>\n";
4528                foreach my $line (@$comment) {
4529                        $line = esc_html($line);
4530                        print "$line\n";
4531                }
4532                print "</pre><ul>\n";
4533                foreach my $difftree_line (@difftree) {
4534                        my %difftree = parse_difftree_raw_line($difftree_line);
4535                        next if !$difftree{'from_id'};
4536
4537                        my $file = $difftree{'file'} || $difftree{'to_file'};
4538
4539                        print "<li>" .
4540                              "[" .
4541                              $cgi->a({-href => href(-full=>1, action=>"blobdiff",
4542                                                     hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
4543                                                     hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
4544                                                     file_name=>$file, file_parent=>$difftree{'from_file'}),
4545                                      -title => "diff"}, 'D');
4546                        if ($have_blame) {
4547                                print $cgi->a({-href => href(-full=>1, action=>"blame",
4548                                                             file_name=>$file, hash_base=>$commit),
4549                                              -title => "blame"}, 'B');
4550                        }
4551                        # if this is not a feed of a file history
4552                        if (!defined $file_name || $file_name ne $file) {
4553                                print $cgi->a({-href => href(-full=>1, action=>"history",
4554                                                             file_name=>$file, hash=>$commit),
4555                                              -title => "history"}, 'H');
4556                        }
4557                        $file = esc_path($file);
4558                        print "] ".
4559                              "$file</li>\n";
4560                }
4561                if ($format eq 'rss') {
4562                        print "</ul>]]>\n" .
4563                              "</content:encoded>\n" .
4564                              "</item>\n";
4565                } elsif ($format eq 'atom') {
4566                        print "</ul>\n</div>\n" .
4567                              "</content>\n" .
4568                              "</entry>\n";
4569                }
4570        }
4571
4572        # end of feed
4573        if ($format eq 'rss') {
4574                print "</channel>\n</rss>\n";
4575        }       elsif ($format eq 'atom') {
4576                print "</feed>\n";
4577        }
4578}
4579
4580sub git_rss {
4581        git_feed('rss');
4582}
4583
4584sub git_atom {
4585        git_feed('atom');
4586}
4587
4588sub git_opml {
4589        my @list = git_get_projects_list();
4590
4591        print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
4592        print <<XML;
4593<?xml version="1.0" encoding="utf-8"?>
4594<opml version="1.0">
4595<head>
4596  <title>$site_name OPML Export</title>
4597</head>
4598<body>
4599<outline text="git RSS feeds">
4600XML
4601
4602        foreach my $pr (@list) {
4603                my %proj = %$pr;
4604                my $head = git_get_head_hash($proj{'path'});
4605                if (!defined $head) {
4606                        next;
4607                }
4608                $git_dir = "$projectroot/$proj{'path'}";
4609                my %co = parse_commit($head);
4610                if (!%co) {
4611                        next;
4612                }
4613
4614                my $path = esc_html(chop_str($proj{'path'}, 25, 5));
4615                my $rss  = "$my_url?p=$proj{'path'};a=rss";
4616                my $html = "$my_url?p=$proj{'path'};a=summary";
4617                print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
4618        }
4619        print <<XML;
4620</outline>
4621</body>
4622</opml>
4623XML
4624}