Andrew's git / gitweb.git / gitweb/gitweb.perl
?
gitweb / gitweb.perlon commit Make git-rerere a builtin (658f365)
   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        $searchtext = quotemeta $searchtext;
 355}
 356
 357our $searchtype = $cgi->param('st');
 358if (defined $searchtype) {
 359        if ($searchtype =~ m/[^a-z]/) {
 360                die_error(undef, "Invalid searchtype parameter");
 361        }
 362}
 363
 364# now read PATH_INFO and use it as alternative to parameters
 365sub evaluate_path_info {
 366        return if defined $project;
 367        my $path_info = $ENV{"PATH_INFO"};
 368        return if !$path_info;
 369        $path_info =~ s,^/+,,;
 370        return if !$path_info;
 371        # find which part of PATH_INFO is project
 372        $project = $path_info;
 373        $project =~ s,/+$,,;
 374        while ($project && !check_head_link("$projectroot/$project")) {
 375                $project =~ s,/*[^/]*$,,;
 376        }
 377        # validate project
 378        $project = validate_pathname($project);
 379        if (!$project ||
 380            ($export_ok && !-e "$projectroot/$project/$export_ok") ||
 381            ($strict_export && !project_in_list($project))) {
 382                undef $project;
 383                return;
 384        }
 385        # do not change any parameters if an action is given using the query string
 386        return if $action;
 387        $path_info =~ s,^$project/*,,;
 388        my ($refname, $pathname) = split(/:/, $path_info, 2);
 389        if (defined $pathname) {
 390                # we got "project.git/branch:filename" or "project.git/branch:dir/"
 391                # we could use git_get_type(branch:pathname), but it needs $git_dir
 392                $pathname =~ s,^/+,,;
 393                if (!$pathname || substr($pathname, -1) eq "/") {
 394                        $action  ||= "tree";
 395                        $pathname =~ s,/$,,;
 396                } else {
 397                        $action  ||= "blob_plain";
 398                }
 399                $hash_base ||= validate_refname($refname);
 400                $file_name ||= validate_pathname($pathname);
 401        } elsif (defined $refname) {
 402                # we got "project.git/branch"
 403                $action ||= "shortlog";
 404                $hash   ||= validate_refname($refname);
 405        }
 406}
 407evaluate_path_info();
 408
 409# path to the current git repository
 410our $git_dir;
 411$git_dir = "$projectroot/$project" if $project;
 412
 413# dispatch
 414my %actions = (
 415        "blame" => \&git_blame2,
 416        "blobdiff" => \&git_blobdiff,
 417        "blobdiff_plain" => \&git_blobdiff_plain,
 418        "blob" => \&git_blob,
 419        "blob_plain" => \&git_blob_plain,
 420        "commitdiff" => \&git_commitdiff,
 421        "commitdiff_plain" => \&git_commitdiff_plain,
 422        "commit" => \&git_commit,
 423        "forks" => \&git_forks,
 424        "heads" => \&git_heads,
 425        "history" => \&git_history,
 426        "log" => \&git_log,
 427        "rss" => \&git_rss,
 428        "atom" => \&git_atom,
 429        "search" => \&git_search,
 430        "search_help" => \&git_search_help,
 431        "shortlog" => \&git_shortlog,
 432        "summary" => \&git_summary,
 433        "tag" => \&git_tag,
 434        "tags" => \&git_tags,
 435        "tree" => \&git_tree,
 436        "snapshot" => \&git_snapshot,
 437        "object" => \&git_object,
 438        # those below don't need $project
 439        "opml" => \&git_opml,
 440        "project_list" => \&git_project_list,
 441        "project_index" => \&git_project_index,
 442);
 443
 444if (defined $project) {
 445        $action ||= 'summary';
 446} else {
 447        $action ||= 'project_list';
 448}
 449if (!defined($actions{$action})) {
 450        die_error(undef, "Unknown action");
 451}
 452if ($action !~ m/^(opml|project_list|project_index)$/ &&
 453    !$project) {
 454        die_error(undef, "Project needed");
 455}
 456$actions{$action}->();
 457exit;
 458
 459## ======================================================================
 460## action links
 461
 462sub href(%) {
 463        my %params = @_;
 464        # default is to use -absolute url() i.e. $my_uri
 465        my $href = $params{-full} ? $my_url : $my_uri;
 466
 467        # XXX: Warning: If you touch this, check the search form for updating,
 468        # too.
 469
 470        my @mapping = (
 471                project => "p",
 472                action => "a",
 473                file_name => "f",
 474                file_parent => "fp",
 475                hash => "h",
 476                hash_parent => "hp",
 477                hash_base => "hb",
 478                hash_parent_base => "hpb",
 479                page => "pg",
 480                order => "o",
 481                searchtext => "s",
 482                searchtype => "st",
 483        );
 484        my %mapping = @mapping;
 485
 486        $params{'project'} = $project unless exists $params{'project'};
 487
 488        my ($use_pathinfo) = gitweb_check_feature('pathinfo');
 489        if ($use_pathinfo) {
 490                # use PATH_INFO for project name
 491                $href .= "/$params{'project'}" if defined $params{'project'};
 492                delete $params{'project'};
 493
 494                # Summary just uses the project path URL
 495                if (defined $params{'action'} && $params{'action'} eq 'summary') {
 496                        delete $params{'action'};
 497                }
 498        }
 499
 500        # now encode the parameters explicitly
 501        my @result = ();
 502        for (my $i = 0; $i < @mapping; $i += 2) {
 503                my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 504                if (defined $params{$name}) {
 505                        push @result, $symbol . "=" . esc_param($params{$name});
 506                }
 507        }
 508        $href .= "?" . join(';', @result) if scalar @result;
 509
 510        return $href;
 511}
 512
 513
 514## ======================================================================
 515## validation, quoting/unquoting and escaping
 516
 517sub validate_pathname {
 518        my $input = shift || return undef;
 519
 520        # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 521        # at the beginning, at the end, and between slashes.
 522        # also this catches doubled slashes
 523        if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 524                return undef;
 525        }
 526        # no null characters
 527        if ($input =~ m!\0!) {
 528                return undef;
 529        }
 530        return $input;
 531}
 532
 533sub validate_refname {
 534        my $input = shift || return undef;
 535
 536        # textual hashes are O.K.
 537        if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 538                return $input;
 539        }
 540        # it must be correct pathname
 541        $input = validate_pathname($input)
 542                or return undef;
 543        # restrictions on ref name according to git-check-ref-format
 544        if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 545                return undef;
 546        }
 547        return $input;
 548}
 549
 550# very thin wrapper for decode("utf8", $str, Encode::FB_DEFAULT);
 551sub to_utf8 {
 552        my $str = shift;
 553        return decode("utf8", $str, Encode::FB_DEFAULT);
 554}
 555
 556# quote unsafe chars, but keep the slash, even when it's not
 557# correct, but quoted slashes look too horrible in bookmarks
 558sub esc_param {
 559        my $str = shift;
 560        $str =~ s/([^A-Za-z0-9\-_.~()\/:@])/sprintf("%%%02X", ord($1))/eg;
 561        $str =~ s/\+/%2B/g;
 562        $str =~ s/ /\+/g;
 563        return $str;
 564}
 565
 566# quote unsafe chars in whole URL, so some charactrs cannot be quoted
 567sub esc_url {
 568        my $str = shift;
 569        $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 570        $str =~ s/\+/%2B/g;
 571        $str =~ s/ /\+/g;
 572        return $str;
 573}
 574
 575# replace invalid utf8 character with SUBSTITUTION sequence
 576sub esc_html ($;%) {
 577        my $str = shift;
 578        my %opts = @_;
 579
 580        $str = to_utf8($str);
 581        $str = escapeHTML($str);
 582        if ($opts{'-nbsp'}) {
 583                $str =~ s/ /&nbsp;/g;
 584        }
 585        $str =~ s|([[:cntrl:]])|(($1 ne "\t") ? quot_cec($1) : $1)|eg;
 586        return $str;
 587}
 588
 589# quote control characters and escape filename to HTML
 590sub esc_path {
 591        my $str = shift;
 592        my %opts = @_;
 593
 594        $str = to_utf8($str);
 595        $str = escapeHTML($str);
 596        if ($opts{'-nbsp'}) {
 597                $str =~ s/ /&nbsp;/g;
 598        }
 599        $str =~ s|([[:cntrl:]])|quot_cec($1)|eg;
 600        return $str;
 601}
 602
 603# Make control characters "printable", using character escape codes (CEC)
 604sub quot_cec {
 605        my $cntrl = shift;
 606        my %es = ( # character escape codes, aka escape sequences
 607                   "\t" => '\t',   # tab            (HT)
 608                   "\n" => '\n',   # line feed      (LF)
 609                   "\r" => '\r',   # carrige return (CR)
 610                   "\f" => '\f',   # form feed      (FF)
 611                   "\b" => '\b',   # backspace      (BS)
 612                   "\a" => '\a',   # alarm (bell)   (BEL)
 613                   "\e" => '\e',   # escape         (ESC)
 614                   "\013" => '\v', # vertical tab   (VT)
 615                   "\000" => '\0', # nul character  (NUL)
 616                   );
 617        my $chr = ( (exists $es{$cntrl})
 618                    ? $es{$cntrl}
 619                    : sprintf('\%03o', ord($cntrl)) );
 620        return "<span class=\"cntrl\">$chr</span>";
 621}
 622
 623# Alternatively use unicode control pictures codepoints,
 624# Unicode "printable representation" (PR)
 625sub quot_upr {
 626        my $cntrl = shift;
 627        my $chr = sprintf('&#%04d;', 0x2400+ord($cntrl));
 628        return "<span class=\"cntrl\">$chr</span>";
 629}
 630
 631# git may return quoted and escaped filenames
 632sub unquote {
 633        my $str = shift;
 634
 635        sub unq {
 636                my $seq = shift;
 637                my %es = ( # character escape codes, aka escape sequences
 638                        't' => "\t",   # tab            (HT, TAB)
 639                        'n' => "\n",   # newline        (NL)
 640                        'r' => "\r",   # return         (CR)
 641                        'f' => "\f",   # form feed      (FF)
 642                        'b' => "\b",   # backspace      (BS)
 643                        'a' => "\a",   # alarm (bell)   (BEL)
 644                        'e' => "\e",   # escape         (ESC)
 645                        'v' => "\013", # vertical tab   (VT)
 646                );
 647
 648                if ($seq =~ m/^[0-7]{1,3}$/) {
 649                        # octal char sequence
 650                        return chr(oct($seq));
 651                } elsif (exists $es{$seq}) {
 652                        # C escape sequence, aka character escape code
 653                        return $es{$seq}
 654                }
 655                # quoted ordinary character
 656                return $seq;
 657        }
 658
 659        if ($str =~ m/^"(.*)"$/) {
 660                # needs unquoting
 661                $str = $1;
 662                $str =~ s/\\([^0-7]|[0-7]{1,3})/unq($1)/eg;
 663        }
 664        return $str;
 665}
 666
 667# escape tabs (convert tabs to spaces)
 668sub untabify {
 669        my $line = shift;
 670
 671        while ((my $pos = index($line, "\t")) != -1) {
 672                if (my $count = (8 - ($pos % 8))) {
 673                        my $spaces = ' ' x $count;
 674                        $line =~ s/\t/$spaces/;
 675                }
 676        }
 677
 678        return $line;
 679}
 680
 681sub project_in_list {
 682        my $project = shift;
 683        my @list = git_get_projects_list();
 684        return @list && scalar(grep { $_->{'path'} eq $project } @list);
 685}
 686
 687## ----------------------------------------------------------------------
 688## HTML aware string manipulation
 689
 690sub chop_str {
 691        my $str = shift;
 692        my $len = shift;
 693        my $add_len = shift || 10;
 694
 695        # allow only $len chars, but don't cut a word if it would fit in $add_len
 696        # if it doesn't fit, cut it if it's still longer than the dots we would add
 697        $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 698        my $body = $1;
 699        my $tail = $2;
 700        if (length($tail) > 4) {
 701                $tail = " ...";
 702                $body =~ s/&[^;]*$//; # remove chopped character entities
 703        }
 704        return "$body$tail";
 705}
 706
 707## ----------------------------------------------------------------------
 708## functions returning short strings
 709
 710# CSS class for given age value (in seconds)
 711sub age_class {
 712        my $age = shift;
 713
 714        if ($age < 60*60*2) {
 715                return "age0";
 716        } elsif ($age < 60*60*24*2) {
 717                return "age1";
 718        } else {
 719                return "age2";
 720        }
 721}
 722
 723# convert age in seconds to "nn units ago" string
 724sub age_string {
 725        my $age = shift;
 726        my $age_str;
 727
 728        if ($age > 60*60*24*365*2) {
 729                $age_str = (int $age/60/60/24/365);
 730                $age_str .= " years ago";
 731        } elsif ($age > 60*60*24*(365/12)*2) {
 732                $age_str = int $age/60/60/24/(365/12);
 733                $age_str .= " months ago";
 734        } elsif ($age > 60*60*24*7*2) {
 735                $age_str = int $age/60/60/24/7;
 736                $age_str .= " weeks ago";
 737        } elsif ($age > 60*60*24*2) {
 738                $age_str = int $age/60/60/24;
 739                $age_str .= " days ago";
 740        } elsif ($age > 60*60*2) {
 741                $age_str = int $age/60/60;
 742                $age_str .= " hours ago";
 743        } elsif ($age > 60*2) {
 744                $age_str = int $age/60;
 745                $age_str .= " min ago";
 746        } elsif ($age > 2) {
 747                $age_str = int $age;
 748                $age_str .= " sec ago";
 749        } else {
 750                $age_str .= " right now";
 751        }
 752        return $age_str;
 753}
 754
 755# convert file mode in octal to symbolic file mode string
 756sub mode_str {
 757        my $mode = oct shift;
 758
 759        if (S_ISDIR($mode & S_IFMT)) {
 760                return 'drwxr-xr-x';
 761        } elsif (S_ISLNK($mode)) {
 762                return 'lrwxrwxrwx';
 763        } elsif (S_ISREG($mode)) {
 764                # git cares only about the executable bit
 765                if ($mode & S_IXUSR) {
 766                        return '-rwxr-xr-x';
 767                } else {
 768                        return '-rw-r--r--';
 769                };
 770        } else {
 771                return '----------';
 772        }
 773}
 774
 775# convert file mode in octal to file type string
 776sub file_type {
 777        my $mode = shift;
 778
 779        if ($mode !~ m/^[0-7]+$/) {
 780                return $mode;
 781        } else {
 782                $mode = oct $mode;
 783        }
 784
 785        if (S_ISDIR($mode & S_IFMT)) {
 786                return "directory";
 787        } elsif (S_ISLNK($mode)) {
 788                return "symlink";
 789        } elsif (S_ISREG($mode)) {
 790                return "file";
 791        } else {
 792                return "unknown";
 793        }
 794}
 795
 796# convert file mode in octal to file type description string
 797sub file_type_long {
 798        my $mode = shift;
 799
 800        if ($mode !~ m/^[0-7]+$/) {
 801                return $mode;
 802        } else {
 803                $mode = oct $mode;
 804        }
 805
 806        if (S_ISDIR($mode & S_IFMT)) {
 807                return "directory";
 808        } elsif (S_ISLNK($mode)) {
 809                return "symlink";
 810        } elsif (S_ISREG($mode)) {
 811                if ($mode & S_IXUSR) {
 812                        return "executable";
 813                } else {
 814                        return "file";
 815                };
 816        } else {
 817                return "unknown";
 818        }
 819}
 820
 821
 822## ----------------------------------------------------------------------
 823## functions returning short HTML fragments, or transforming HTML fragments
 824## which don't beling to other sections
 825
 826# format line of commit message.
 827sub format_log_line_html {
 828        my $line = shift;
 829
 830        $line = esc_html($line, -nbsp=>1);
 831        if ($line =~ m/([0-9a-fA-F]{8,40})/) {
 832                my $hash_text = $1;
 833                my $link =
 834                        $cgi->a({-href => href(action=>"object", hash=>$hash_text),
 835                                -class => "text"}, $hash_text);
 836                $line =~ s/$hash_text/$link/;
 837        }
 838        return $line;
 839}
 840
 841# format marker of refs pointing to given object
 842sub format_ref_marker {
 843        my ($refs, $id) = @_;
 844        my $markers = '';
 845
 846        if (defined $refs->{$id}) {
 847                foreach my $ref (@{$refs->{$id}}) {
 848                        my ($type, $name) = qw();
 849                        # e.g. tags/v2.6.11 or heads/next
 850                        if ($ref =~ m!^(.*?)s?/(.*)$!) {
 851                                $type = $1;
 852                                $name = $2;
 853                        } else {
 854                                $type = "ref";
 855                                $name = $ref;
 856                        }
 857
 858                        $markers .= " <span class=\"$type\" title=\"$ref\">" .
 859                                    esc_html($name) . "</span>";
 860                }
 861        }
 862
 863        if ($markers) {
 864                return ' <span class="refs">'. $markers . '</span>';
 865        } else {
 866                return "";
 867        }
 868}
 869
 870# format, perhaps shortened and with markers, title line
 871sub format_subject_html {
 872        my ($long, $short, $href, $extra) = @_;
 873        $extra = '' unless defined($extra);
 874
 875        if (length($short) < length($long)) {
 876                return $cgi->a({-href => $href, -class => "list subject",
 877                                -title => to_utf8($long)},
 878                       esc_html($short) . $extra);
 879        } else {
 880                return $cgi->a({-href => $href, -class => "list subject"},
 881                       esc_html($long)  . $extra);
 882        }
 883}
 884
 885# format patch (diff) line (rather not to be used for diff headers)
 886sub format_diff_line {
 887        my $line = shift;
 888        my ($from, $to) = @_;
 889        my $char = substr($line, 0, 1);
 890        my $diff_class = "";
 891
 892        chomp $line;
 893
 894        if ($char eq '+') {
 895                $diff_class = " add";
 896        } elsif ($char eq "-") {
 897                $diff_class = " rem";
 898        } elsif ($char eq "@") {
 899                $diff_class = " chunk_header";
 900        } elsif ($char eq "\\") {
 901                $diff_class = " incomplete";
 902        }
 903        $line = untabify($line);
 904        if ($from && $to && $line =~ m/^\@{2} /) {
 905                my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
 906                        $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
 907
 908                $from_lines = 0 unless defined $from_lines;
 909                $to_lines   = 0 unless defined $to_lines;
 910
 911                if ($from->{'href'}) {
 912                        $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
 913                                             -class=>"list"}, $from_text);
 914                }
 915                if ($to->{'href'}) {
 916                        $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
 917                                             -class=>"list"}, $to_text);
 918                }
 919                $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
 920                        "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
 921                return "<div class=\"diff$diff_class\">$line</div>\n";
 922        }
 923        return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
 924}
 925
 926## ----------------------------------------------------------------------
 927## git utility subroutines, invoking git commands
 928
 929# returns path to the core git executable and the --git-dir parameter as list
 930sub git_cmd {
 931        return $GIT, '--git-dir='.$git_dir;
 932}
 933
 934# returns path to the core git executable and the --git-dir parameter as string
 935sub git_cmd_str {
 936        return join(' ', git_cmd());
 937}
 938
 939# get HEAD ref of given project as hash
 940sub git_get_head_hash {
 941        my $project = shift;
 942        my $o_git_dir = $git_dir;
 943        my $retval = undef;
 944        $git_dir = "$projectroot/$project";
 945        if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
 946                my $head = <$fd>;
 947                close $fd;
 948                if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
 949                        $retval = $1;
 950                }
 951        }
 952        if (defined $o_git_dir) {
 953                $git_dir = $o_git_dir;
 954        }
 955        return $retval;
 956}
 957
 958# get type of given object
 959sub git_get_type {
 960        my $hash = shift;
 961
 962        open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
 963        my $type = <$fd>;
 964        close $fd or return;
 965        chomp $type;
 966        return $type;
 967}
 968
 969sub git_get_project_config {
 970        my ($key, $type) = @_;
 971
 972        return unless ($key);
 973        $key =~ s/^gitweb\.//;
 974        return if ($key =~ m/\W/);
 975
 976        my @x = (git_cmd(), 'repo-config');
 977        if (defined $type) { push @x, $type; }
 978        push @x, "--get";
 979        push @x, "gitweb.$key";
 980        my $val = qx(@x);
 981        chomp $val;
 982        return ($val);
 983}
 984
 985# get hash of given path at given ref
 986sub git_get_hash_by_path {
 987        my $base = shift;
 988        my $path = shift || return undef;
 989        my $type = shift;
 990
 991        $path =~ s,/+$,,;
 992
 993        open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
 994                or die_error(undef, "Open git-ls-tree failed");
 995        my $line = <$fd>;
 996        close $fd or return undef;
 997
 998        #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
 999        $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
1000        if (defined $type && $type ne $2) {
1001                # type doesn't match
1002                return undef;
1003        }
1004        return $3;
1005}
1006
1007## ......................................................................
1008## git utility functions, directly accessing git repository
1009
1010sub git_get_project_description {
1011        my $path = shift;
1012
1013        open my $fd, "$projectroot/$path/description" or return undef;
1014        my $descr = <$fd>;
1015        close $fd;
1016        chomp $descr;
1017        return $descr;
1018}
1019
1020sub git_get_project_url_list {
1021        my $path = shift;
1022
1023        open my $fd, "$projectroot/$path/cloneurl" or return;
1024        my @git_project_url_list = map { chomp; $_ } <$fd>;
1025        close $fd;
1026
1027        return wantarray ? @git_project_url_list : \@git_project_url_list;
1028}
1029
1030sub git_get_projects_list {
1031        my ($filter) = @_;
1032        my @list;
1033
1034        $filter ||= '';
1035        $filter =~ s/\.git$//;
1036
1037        if (-d $projects_list) {
1038                # search in directory
1039                my $dir = $projects_list . ($filter ? "/$filter" : '');
1040                # remove the trailing "/"
1041                $dir =~ s!/+$!!;
1042                my $pfxlen = length("$dir");
1043
1044                my ($check_forks) = gitweb_check_feature('forks');
1045
1046                File::Find::find({
1047                        follow_fast => 1, # follow symbolic links
1048                        dangling_symlinks => 0, # ignore dangling symlinks, silently
1049                        wanted => sub {
1050                                # skip project-list toplevel, if we get it.
1051                                return if (m!^[/.]$!);
1052                                # only directories can be git repositories
1053                                return unless (-d $_);
1054
1055                                my $subdir = substr($File::Find::name, $pfxlen + 1);
1056                                # we check related file in $projectroot
1057                                if ($check_forks and $subdir =~ m#/.#) {
1058                                        $File::Find::prune = 1;
1059                                } elsif (check_export_ok("$projectroot/$filter/$subdir")) {
1060                                        push @list, { path => ($filter ? "$filter/" : '') . $subdir };
1061                                        $File::Find::prune = 1;
1062                                }
1063                        },
1064                }, "$dir");
1065
1066        } elsif (-f $projects_list) {
1067                # read from file(url-encoded):
1068                # 'git%2Fgit.git Linus+Torvalds'
1069                # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1070                # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1071                open my ($fd), $projects_list or return;
1072                while (my $line = <$fd>) {
1073                        chomp $line;
1074                        my ($path, $owner) = split ' ', $line;
1075                        $path = unescape($path);
1076                        $owner = unescape($owner);
1077                        if (!defined $path) {
1078                                next;
1079                        }
1080                        if ($filter ne '') {
1081                                # looking for forks;
1082                                my $pfx = substr($path, 0, length($filter));
1083                                if ($pfx ne $filter) {
1084                                        next;
1085                                }
1086                                my $sfx = substr($path, length($filter));
1087                                if ($sfx !~ /^\/.*\.git$/) {
1088                                        next;
1089                                }
1090                        }
1091                        if (check_export_ok("$projectroot/$path")) {
1092                                my $pr = {
1093                                        path => $path,
1094                                        owner => to_utf8($owner),
1095                                };
1096                                push @list, $pr
1097                        }
1098                }
1099                close $fd;
1100        }
1101        @list = sort {$a->{'path'} cmp $b->{'path'}} @list;
1102        return @list;
1103}
1104
1105sub git_get_project_owner {
1106        my $project = shift;
1107        my $owner;
1108
1109        return undef unless $project;
1110
1111        # read from file (url-encoded):
1112        # 'git%2Fgit.git Linus+Torvalds'
1113        # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1114        # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1115        if (-f $projects_list) {
1116                open (my $fd , $projects_list);
1117                while (my $line = <$fd>) {
1118                        chomp $line;
1119                        my ($pr, $ow) = split ' ', $line;
1120                        $pr = unescape($pr);
1121                        $ow = unescape($ow);
1122                        if ($pr eq $project) {
1123                                $owner = to_utf8($ow);
1124                                last;
1125                        }
1126                }
1127                close $fd;
1128        }
1129        if (!defined $owner) {
1130                $owner = get_file_owner("$projectroot/$project");
1131        }
1132
1133        return $owner;
1134}
1135
1136sub git_get_last_activity {
1137        my ($path) = @_;
1138        my $fd;
1139
1140        $git_dir = "$projectroot/$path";
1141        open($fd, "-|", git_cmd(), 'for-each-ref',
1142             '--format=%(refname) %(committer)',
1143             '--sort=-committerdate',
1144             'refs/heads') or return;
1145        my $most_recent = <$fd>;
1146        close $fd or return;
1147        if ($most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1148                my $timestamp = $1;
1149                my $age = time - $timestamp;
1150                return ($age, age_string($age));
1151        }
1152}
1153
1154sub git_get_references {
1155        my $type = shift || "";
1156        my %refs;
1157        # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
1158        # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
1159        open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
1160                ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
1161                or return;
1162
1163        while (my $line = <$fd>) {
1164                chomp $line;
1165                if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type/?[^^]+)!) {
1166                        if (defined $refs{$1}) {
1167                                push @{$refs{$1}}, $2;
1168                        } else {
1169                                $refs{$1} = [ $2 ];
1170                        }
1171                }
1172        }
1173        close $fd or return;
1174        return \%refs;
1175}
1176
1177sub git_get_rev_name_tags {
1178        my $hash = shift || return undef;
1179
1180        open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1181                or return;
1182        my $name_rev = <$fd>;
1183        close $fd;
1184
1185        if ($name_rev =~ m|^$hash tags/(.*)$|) {
1186                return $1;
1187        } else {
1188                # catches also '$hash undefined' output
1189                return undef;
1190        }
1191}
1192
1193## ----------------------------------------------------------------------
1194## parse to hash functions
1195
1196sub parse_date {
1197        my $epoch = shift;
1198        my $tz = shift || "-0000";
1199
1200        my %date;
1201        my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1202        my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1203        my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1204        $date{'hour'} = $hour;
1205        $date{'minute'} = $min;
1206        $date{'mday'} = $mday;
1207        $date{'day'} = $days[$wday];
1208        $date{'month'} = $months[$mon];
1209        $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1210                             $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1211        $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1212                             $mday, $months[$mon], $hour ,$min;
1213        $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
1214                             1900+$year, $mon, $mday, $hour ,$min, $sec;
1215
1216        $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1217        my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1218        ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1219        $date{'hour_local'} = $hour;
1220        $date{'minute_local'} = $min;
1221        $date{'tz_local'} = $tz;
1222        $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
1223                                  1900+$year, $mon+1, $mday,
1224                                  $hour, $min, $sec, $tz);
1225        return %date;
1226}
1227
1228sub parse_tag {
1229        my $tag_id = shift;
1230        my %tag;
1231        my @comment;
1232
1233        open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1234        $tag{'id'} = $tag_id;
1235        while (my $line = <$fd>) {
1236                chomp $line;
1237                if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1238                        $tag{'object'} = $1;
1239                } elsif ($line =~ m/^type (.+)$/) {
1240                        $tag{'type'} = $1;
1241                } elsif ($line =~ m/^tag (.+)$/) {
1242                        $tag{'name'} = $1;
1243                } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1244                        $tag{'author'} = $1;
1245                        $tag{'epoch'} = $2;
1246                        $tag{'tz'} = $3;
1247                } elsif ($line =~ m/--BEGIN/) {
1248                        push @comment, $line;
1249                        last;
1250                } elsif ($line eq "") {
1251                        last;
1252                }
1253        }
1254        push @comment, <$fd>;
1255        $tag{'comment'} = \@comment;
1256        close $fd or return;
1257        if (!defined $tag{'name'}) {
1258                return
1259        };
1260        return %tag
1261}
1262
1263sub parse_commit {
1264        my $commit_id = shift;
1265        my $commit_text = shift;
1266
1267        my @commit_lines;
1268        my %co;
1269
1270        if (defined $commit_text) {
1271                @commit_lines = @$commit_text;
1272        } else {
1273                local $/ = "\0";
1274                open my $fd, "-|", git_cmd(), "rev-list",
1275                        "--header", "--parents", "--max-count=1",
1276                        $commit_id, "--"
1277                        or return;
1278                @commit_lines = split '\n', <$fd>;
1279                close $fd or return;
1280                pop @commit_lines;
1281        }
1282        my $header = shift @commit_lines;
1283        if (!($header =~ m/^[0-9a-fA-F]{40}/)) {
1284                return;
1285        }
1286        ($co{'id'}, my @parents) = split ' ', $header;
1287        $co{'parents'} = \@parents;
1288        $co{'parent'} = $parents[0];
1289        while (my $line = shift @commit_lines) {
1290                last if $line eq "\n";
1291                if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1292                        $co{'tree'} = $1;
1293                } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1294                        $co{'author'} = $1;
1295                        $co{'author_epoch'} = $2;
1296                        $co{'author_tz'} = $3;
1297                        if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
1298                                $co{'author_name'}  = $1;
1299                                $co{'author_email'} = $2;
1300                        } else {
1301                                $co{'author_name'} = $co{'author'};
1302                        }
1303                } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1304                        $co{'committer'} = $1;
1305                        $co{'committer_epoch'} = $2;
1306                        $co{'committer_tz'} = $3;
1307                        $co{'committer_name'} = $co{'committer'};
1308                        if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
1309                                $co{'committer_name'}  = $1;
1310                                $co{'committer_email'} = $2;
1311                        } else {
1312                                $co{'committer_name'} = $co{'committer'};
1313                        }
1314                }
1315        }
1316        if (!defined $co{'tree'}) {
1317                return;
1318        };
1319
1320        foreach my $title (@commit_lines) {
1321                $title =~ s/^    //;
1322                if ($title ne "") {
1323                        $co{'title'} = chop_str($title, 80, 5);
1324                        # remove leading stuff of merges to make the interesting part visible
1325                        if (length($title) > 50) {
1326                                $title =~ s/^Automatic //;
1327                                $title =~ s/^merge (of|with) /Merge ... /i;
1328                                if (length($title) > 50) {
1329                                        $title =~ s/(http|rsync):\/\///;
1330                                }
1331                                if (length($title) > 50) {
1332                                        $title =~ s/(master|www|rsync)\.//;
1333                                }
1334                                if (length($title) > 50) {
1335                                        $title =~ s/kernel.org:?//;
1336                                }
1337                                if (length($title) > 50) {
1338                                        $title =~ s/\/pub\/scm//;
1339                                }
1340                        }
1341                        $co{'title_short'} = chop_str($title, 50, 5);
1342                        last;
1343                }
1344        }
1345        if ($co{'title'} eq "") {
1346                $co{'title'} = $co{'title_short'} = '(no commit message)';
1347        }
1348        # remove added spaces
1349        foreach my $line (@commit_lines) {
1350                $line =~ s/^    //;
1351        }
1352        $co{'comment'} = \@commit_lines;
1353
1354        my $age = time - $co{'committer_epoch'};
1355        $co{'age'} = $age;
1356        $co{'age_string'} = age_string($age);
1357        my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1358        if ($age > 60*60*24*7*2) {
1359                $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1360                $co{'age_string_age'} = $co{'age_string'};
1361        } else {
1362                $co{'age_string_date'} = $co{'age_string'};
1363                $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1364        }
1365        return %co;
1366}
1367
1368# parse ref from ref_file, given by ref_id, with given type
1369sub parse_ref {
1370        my $ref_file = shift;
1371        my $ref_id = shift;
1372        my $type = shift || git_get_type($ref_id);
1373        my %ref_item;
1374
1375        $ref_item{'type'} = $type;
1376        $ref_item{'id'} = $ref_id;
1377        $ref_item{'epoch'} = 0;
1378        $ref_item{'age'} = "unknown";
1379        if ($type eq "tag") {
1380                my %tag = parse_tag($ref_id);
1381                $ref_item{'comment'} = $tag{'comment'};
1382                if ($tag{'type'} eq "commit") {
1383                        my %co = parse_commit($tag{'object'});
1384                        $ref_item{'epoch'} = $co{'committer_epoch'};
1385                        $ref_item{'age'} = $co{'age_string'};
1386                } elsif (defined($tag{'epoch'})) {
1387                        my $age = time - $tag{'epoch'};
1388                        $ref_item{'epoch'} = $tag{'epoch'};
1389                        $ref_item{'age'} = age_string($age);
1390                }
1391                $ref_item{'reftype'} = $tag{'type'};
1392                $ref_item{'name'} = $tag{'name'};
1393                $ref_item{'refid'} = $tag{'object'};
1394        } elsif ($type eq "commit"){
1395                my %co = parse_commit($ref_id);
1396                $ref_item{'reftype'} = "commit";
1397                $ref_item{'name'} = $ref_file;
1398                $ref_item{'title'} = $co{'title'};
1399                $ref_item{'refid'} = $ref_id;
1400                $ref_item{'epoch'} = $co{'committer_epoch'};
1401                $ref_item{'age'} = $co{'age_string'};
1402        } else {
1403                $ref_item{'reftype'} = $type;
1404                $ref_item{'name'} = $ref_file;
1405                $ref_item{'refid'} = $ref_id;
1406        }
1407
1408        return %ref_item;
1409}
1410
1411# parse line of git-diff-tree "raw" output
1412sub parse_difftree_raw_line {
1413        my $line = shift;
1414        my %res;
1415
1416        # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1417        # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1418        if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1419                $res{'from_mode'} = $1;
1420                $res{'to_mode'} = $2;
1421                $res{'from_id'} = $3;
1422                $res{'to_id'} = $4;
1423                $res{'status'} = $5;
1424                $res{'similarity'} = $6;
1425                if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1426                        ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1427                } else {
1428                        $res{'file'} = unquote($7);
1429                }
1430        }
1431        # 'c512b523472485aef4fff9e57b229d9d243c967f'
1432        elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1433                $res{'commit'} = $1;
1434        }
1435
1436        return wantarray ? %res : \%res;
1437}
1438
1439# parse line of git-ls-tree output
1440sub parse_ls_tree_line ($;%) {
1441        my $line = shift;
1442        my %opts = @_;
1443        my %res;
1444
1445        #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1446        $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
1447
1448        $res{'mode'} = $1;
1449        $res{'type'} = $2;
1450        $res{'hash'} = $3;
1451        if ($opts{'-z'}) {
1452                $res{'name'} = $4;
1453        } else {
1454                $res{'name'} = unquote($4);
1455        }
1456
1457        return wantarray ? %res : \%res;
1458}
1459
1460## ......................................................................
1461## parse to array of hashes functions
1462
1463sub git_get_heads_list {
1464        my $limit = shift;
1465        my @headslist;
1466
1467        open my $fd, '-|', git_cmd(), 'for-each-ref',
1468                ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
1469                '--format=%(objectname) %(refname) %(subject)%00%(committer)',
1470                'refs/heads'
1471                or return;
1472        while (my $line = <$fd>) {
1473                my %ref_item;
1474
1475                chomp $line;
1476                my ($refinfo, $committerinfo) = split(/\0/, $line);
1477                my ($hash, $name, $title) = split(' ', $refinfo, 3);
1478                my ($committer, $epoch, $tz) =
1479                        ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
1480                $name =~ s!^refs/heads/!!;
1481
1482                $ref_item{'name'}  = $name;
1483                $ref_item{'id'}    = $hash;
1484                $ref_item{'title'} = $title || '(no commit message)';
1485                $ref_item{'epoch'} = $epoch;
1486                if ($epoch) {
1487                        $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1488                } else {
1489                        $ref_item{'age'} = "unknown";
1490                }
1491
1492                push @headslist, \%ref_item;
1493        }
1494        close $fd;
1495
1496        return wantarray ? @headslist : \@headslist;
1497}
1498
1499sub git_get_tags_list {
1500        my $limit = shift;
1501        my @tagslist;
1502
1503        open my $fd, '-|', git_cmd(), 'for-each-ref',
1504                ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
1505                '--format=%(objectname) %(objecttype) %(refname) '.
1506                '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
1507                'refs/tags'
1508                or return;
1509        while (my $line = <$fd>) {
1510                my %ref_item;
1511
1512                chomp $line;
1513                my ($refinfo, $creatorinfo) = split(/\0/, $line);
1514                my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
1515                my ($creator, $epoch, $tz) =
1516                        ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
1517                $name =~ s!^refs/tags/!!;
1518
1519                $ref_item{'type'} = $type;
1520                $ref_item{'id'} = $id;
1521                $ref_item{'name'} = $name;
1522                if ($type eq "tag") {
1523                        $ref_item{'subject'} = $title;
1524                        $ref_item{'reftype'} = $reftype;
1525                        $ref_item{'refid'}   = $refid;
1526                } else {
1527                        $ref_item{'reftype'} = $type;
1528                        $ref_item{'refid'}   = $id;
1529                }
1530
1531                if ($type eq "tag" || $type eq "commit") {
1532                        $ref_item{'epoch'} = $epoch;
1533                        if ($epoch) {
1534                                $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1535                        } else {
1536                                $ref_item{'age'} = "unknown";
1537                        }
1538                }
1539
1540                push @tagslist, \%ref_item;
1541        }
1542        close $fd;
1543
1544        return wantarray ? @tagslist : \@tagslist;
1545}
1546
1547## ----------------------------------------------------------------------
1548## filesystem-related functions
1549
1550sub get_file_owner {
1551        my $path = shift;
1552
1553        my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
1554        my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
1555        if (!defined $gcos) {
1556                return undef;
1557        }
1558        my $owner = $gcos;
1559        $owner =~ s/[,;].*$//;
1560        return to_utf8($owner);
1561}
1562
1563## ......................................................................
1564## mimetype related functions
1565
1566sub mimetype_guess_file {
1567        my $filename = shift;
1568        my $mimemap = shift;
1569        -r $mimemap or return undef;
1570
1571        my %mimemap;
1572        open(MIME, $mimemap) or return undef;
1573        while (<MIME>) {
1574                next if m/^#/; # skip comments
1575                my ($mime, $exts) = split(/\t+/);
1576                if (defined $exts) {
1577                        my @exts = split(/\s+/, $exts);
1578                        foreach my $ext (@exts) {
1579                                $mimemap{$ext} = $mime;
1580                        }
1581                }
1582        }
1583        close(MIME);
1584
1585        $filename =~ /\.([^.]*)$/;
1586        return $mimemap{$1};
1587}
1588
1589sub mimetype_guess {
1590        my $filename = shift;
1591        my $mime;
1592        $filename =~ /\./ or return undef;
1593
1594        if ($mimetypes_file) {
1595                my $file = $mimetypes_file;
1596                if ($file !~ m!^/!) { # if it is relative path
1597                        # it is relative to project
1598                        $file = "$projectroot/$project/$file";
1599                }
1600                $mime = mimetype_guess_file($filename, $file);
1601        }
1602        $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
1603        return $mime;
1604}
1605
1606sub blob_mimetype {
1607        my $fd = shift;
1608        my $filename = shift;
1609
1610        if ($filename) {
1611                my $mime = mimetype_guess($filename);
1612                $mime and return $mime;
1613        }
1614
1615        # just in case
1616        return $default_blob_plain_mimetype unless $fd;
1617
1618        if (-T $fd) {
1619                return 'text/plain' .
1620                       ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
1621        } elsif (! $filename) {
1622                return 'application/octet-stream';
1623        } elsif ($filename =~ m/\.png$/i) {
1624                return 'image/png';
1625        } elsif ($filename =~ m/\.gif$/i) {
1626                return 'image/gif';
1627        } elsif ($filename =~ m/\.jpe?g$/i) {
1628                return 'image/jpeg';
1629        } else {
1630                return 'application/octet-stream';
1631        }
1632}
1633
1634## ======================================================================
1635## functions printing HTML: header, footer, error page
1636
1637sub git_header_html {
1638        my $status = shift || "200 OK";
1639        my $expires = shift;
1640
1641        my $title = "$site_name";
1642        if (defined $project) {
1643                $title .= " - $project";
1644                if (defined $action) {
1645                        $title .= "/$action";
1646                        if (defined $file_name) {
1647                                $title .= " - " . esc_path($file_name);
1648                                if ($action eq "tree" && $file_name !~ m|/$|) {
1649                                        $title .= "/";
1650                                }
1651                        }
1652                }
1653        }
1654        my $content_type;
1655        # require explicit support from the UA if we are to send the page as
1656        # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
1657        # we have to do this because MSIE sometimes globs '*/*', pretending to
1658        # support xhtml+xml but choking when it gets what it asked for.
1659        if (defined $cgi->http('HTTP_ACCEPT') &&
1660            $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
1661            $cgi->Accept('application/xhtml+xml') != 0) {
1662                $content_type = 'application/xhtml+xml';
1663        } else {
1664                $content_type = 'text/html';
1665        }
1666        print $cgi->header(-type=>$content_type, -charset => 'utf-8',
1667                           -status=> $status, -expires => $expires);
1668        print <<EOF;
1669<?xml version="1.0" encoding="utf-8"?>
1670<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
1671<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
1672<!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
1673<!-- git core binaries version $git_version -->
1674<head>
1675<meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
1676<meta name="generator" content="gitweb/$version git/$git_version"/>
1677<meta name="robots" content="index, nofollow"/>
1678<title>$title</title>
1679EOF
1680# print out each stylesheet that exist
1681        if (defined $stylesheet) {
1682#provides backwards capability for those people who define style sheet in a config file
1683                print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1684        } else {
1685                foreach my $stylesheet (@stylesheets) {
1686                        next unless $stylesheet;
1687                        print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1688                }
1689        }
1690        if (defined $project) {
1691                printf('<link rel="alternate" title="%s log RSS feed" '.
1692                       'href="%s" type="application/rss+xml" />'."\n",
1693                       esc_param($project), href(action=>"rss"));
1694                printf('<link rel="alternate" title="%s log Atom feed" '.
1695                       'href="%s" type="application/atom+xml" />'."\n",
1696                       esc_param($project), href(action=>"atom"));
1697        } else {
1698                printf('<link rel="alternate" title="%s projects list" '.
1699                       'href="%s" type="text/plain; charset=utf-8"/>'."\n",
1700                       $site_name, href(project=>undef, action=>"project_index"));
1701                printf('<link rel="alternate" title="%s projects feeds" '.
1702                       'href="%s" type="text/x-opml"/>'."\n",
1703                       $site_name, href(project=>undef, action=>"opml"));
1704        }
1705        if (defined $favicon) {
1706                print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
1707        }
1708
1709        print "</head>\n" .
1710              "<body>\n";
1711
1712        if (-f $site_header) {
1713                open (my $fd, $site_header);
1714                print <$fd>;
1715                close $fd;
1716        }
1717
1718        print "<div class=\"page_header\">\n" .
1719              $cgi->a({-href => esc_url($logo_url),
1720                       -title => $logo_label},
1721                      qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
1722        print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
1723        if (defined $project) {
1724                print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
1725                if (defined $action) {
1726                        print " / $action";
1727                }
1728                print "\n";
1729                if (!defined $searchtext) {
1730                        $searchtext = "";
1731                }
1732                my $search_hash;
1733                if (defined $hash_base) {
1734                        $search_hash = $hash_base;
1735                } elsif (defined $hash) {
1736                        $search_hash = $hash;
1737                } else {
1738                        $search_hash = "HEAD";
1739                }
1740                $cgi->param("a", "search");
1741                $cgi->param("h", $search_hash);
1742                $cgi->param("p", $project);
1743                print $cgi->startform(-method => "get", -action => $my_uri) .
1744                      "<div class=\"search\">\n" .
1745                      $cgi->hidden(-name => "p") . "\n" .
1746                      $cgi->hidden(-name => "a") . "\n" .
1747                      $cgi->hidden(-name => "h") . "\n" .
1748                      $cgi->popup_menu(-name => 'st', -default => 'commit',
1749                                       -values => ['commit', 'author', 'committer', 'pickaxe']) .
1750                      $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
1751                      " search:\n",
1752                      $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1753                      "</div>" .
1754                      $cgi->end_form() . "\n";
1755        }
1756        print "</div>\n";
1757}
1758
1759sub git_footer_html {
1760        print "<div class=\"page_footer\">\n";
1761        if (defined $project) {
1762                my $descr = git_get_project_description($project);
1763                if (defined $descr) {
1764                        print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1765                }
1766                print $cgi->a({-href => href(action=>"rss"),
1767                              -class => "rss_logo"}, "RSS") . " ";
1768                print $cgi->a({-href => href(action=>"atom"),
1769                              -class => "rss_logo"}, "Atom") . "\n";
1770        } else {
1771                print $cgi->a({-href => href(project=>undef, action=>"opml"),
1772                              -class => "rss_logo"}, "OPML") . " ";
1773                print $cgi->a({-href => href(project=>undef, action=>"project_index"),
1774                              -class => "rss_logo"}, "TXT") . "\n";
1775        }
1776        print "</div>\n" ;
1777
1778        if (-f $site_footer) {
1779                open (my $fd, $site_footer);
1780                print <$fd>;
1781                close $fd;
1782        }
1783
1784        print "</body>\n" .
1785              "</html>";
1786}
1787
1788sub die_error {
1789        my $status = shift || "403 Forbidden";
1790        my $error = shift || "Malformed query, file missing or permission denied";
1791
1792        git_header_html($status);
1793        print <<EOF;
1794<div class="page_body">
1795<br /><br />
1796$status - $error
1797<br />
1798</div>
1799EOF
1800        git_footer_html();
1801        exit;
1802}
1803
1804## ----------------------------------------------------------------------
1805## functions printing or outputting HTML: navigation
1806
1807sub git_print_page_nav {
1808        my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
1809        $extra = '' if !defined $extra; # pager or formats
1810
1811        my @navs = qw(summary shortlog log commit commitdiff tree);
1812        if ($suppress) {
1813                @navs = grep { $_ ne $suppress } @navs;
1814        }
1815
1816        my %arg = map { $_ => {action=>$_} } @navs;
1817        if (defined $head) {
1818                for (qw(commit commitdiff)) {
1819                        $arg{$_}{hash} = $head;
1820                }
1821                if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
1822                        for (qw(shortlog log)) {
1823                                $arg{$_}{hash} = $head;
1824                        }
1825                }
1826        }
1827        $arg{tree}{hash} = $treehead if defined $treehead;
1828        $arg{tree}{hash_base} = $treebase if defined $treebase;
1829
1830        print "<div class=\"page_nav\">\n" .
1831                (join " | ",
1832                 map { $_ eq $current ?
1833                       $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
1834                 } @navs);
1835        print "<br/>\n$extra<br/>\n" .
1836              "</div>\n";
1837}
1838
1839sub format_paging_nav {
1840        my ($action, $hash, $head, $page, $nrevs) = @_;
1841        my $paging_nav;
1842
1843
1844        if ($hash ne $head || $page) {
1845                $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
1846        } else {
1847                $paging_nav .= "HEAD";
1848        }
1849
1850        if ($page > 0) {
1851                $paging_nav .= " &sdot; " .
1852                        $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
1853                                 -accesskey => "p", -title => "Alt-p"}, "prev");
1854        } else {
1855                $paging_nav .= " &sdot; prev";
1856        }
1857
1858        if ($nrevs >= (100 * ($page+1)-1)) {
1859                $paging_nav .= " &sdot; " .
1860                        $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
1861                                 -accesskey => "n", -title => "Alt-n"}, "next");
1862        } else {
1863                $paging_nav .= " &sdot; next";
1864        }
1865
1866        return $paging_nav;
1867}
1868
1869## ......................................................................
1870## functions printing or outputting HTML: div
1871
1872sub git_print_header_div {
1873        my ($action, $title, $hash, $hash_base) = @_;
1874        my %args = ();
1875
1876        $args{action} = $action;
1877        $args{hash} = $hash if $hash;
1878        $args{hash_base} = $hash_base if $hash_base;
1879
1880        print "<div class=\"header\">\n" .
1881              $cgi->a({-href => href(%args), -class => "title"},
1882              $title ? $title : $action) .
1883              "\n</div>\n";
1884}
1885
1886#sub git_print_authorship (\%) {
1887sub git_print_authorship {
1888        my $co = shift;
1889
1890        my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
1891        print "<div class=\"author_date\">" .
1892              esc_html($co->{'author_name'}) .
1893              " [$ad{'rfc2822'}";
1894        if ($ad{'hour_local'} < 6) {
1895                printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
1896                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1897        } else {
1898                printf(" (%02d:%02d %s)",
1899                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1900        }
1901        print "]</div>\n";
1902}
1903
1904sub git_print_page_path {
1905        my $name = shift;
1906        my $type = shift;
1907        my $hb = shift;
1908
1909
1910        print "<div class=\"page_path\">";
1911        print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
1912                      -title => 'tree root'}, "[$project]");
1913        print " / ";
1914        if (defined $name) {
1915                my @dirname = split '/', $name;
1916                my $basename = pop @dirname;
1917                my $fullname = '';
1918
1919                foreach my $dir (@dirname) {
1920                        $fullname .= ($fullname ? '/' : '') . $dir;
1921                        print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
1922                                                     hash_base=>$hb),
1923                                      -title => esc_html($fullname)}, esc_path($dir));
1924                        print " / ";
1925                }
1926                if (defined $type && $type eq 'blob') {
1927                        print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
1928                                                     hash_base=>$hb),
1929                                      -title => esc_html($name)}, esc_path($basename));
1930                } elsif (defined $type && $type eq 'tree') {
1931                        print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
1932                                                     hash_base=>$hb),
1933                                      -title => esc_html($name)}, esc_path($basename));
1934                        print " / ";
1935                } else {
1936                        print esc_path($basename);
1937                }
1938        }
1939        print "<br/></div>\n";
1940}
1941
1942# sub git_print_log (\@;%) {
1943sub git_print_log ($;%) {
1944        my $log = shift;
1945        my %opts = @_;
1946
1947        if ($opts{'-remove_title'}) {
1948                # remove title, i.e. first line of log
1949                shift @$log;
1950        }
1951        # remove leading empty lines
1952        while (defined $log->[0] && $log->[0] eq "") {
1953                shift @$log;
1954        }
1955
1956        # print log
1957        my $signoff = 0;
1958        my $empty = 0;
1959        foreach my $line (@$log) {
1960                if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
1961                        $signoff = 1;
1962                        $empty = 0;
1963                        if (! $opts{'-remove_signoff'}) {
1964                                print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
1965                                next;
1966                        } else {
1967                                # remove signoff lines
1968                                next;
1969                        }
1970                } else {
1971                        $signoff = 0;
1972                }
1973
1974                # print only one empty line
1975                # do not print empty line after signoff
1976                if ($line eq "") {
1977                        next if ($empty || $signoff);
1978                        $empty = 1;
1979                } else {
1980                        $empty = 0;
1981                }
1982
1983                print format_log_line_html($line) . "<br/>\n";
1984        }
1985
1986        if ($opts{'-final_empty_line'}) {
1987                # end with single empty line
1988                print "<br/>\n" unless $empty;
1989        }
1990}
1991
1992# return link target (what link points to)
1993sub git_get_link_target {
1994        my $hash = shift;
1995        my $link_target;
1996
1997        # read link
1998        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
1999                or return;
2000        {
2001                local $/;
2002                $link_target = <$fd>;
2003        }
2004        close $fd
2005                or return;
2006
2007        return $link_target;
2008}
2009
2010# given link target, and the directory (basedir) the link is in,
2011# return target of link relative to top directory (top tree);
2012# return undef if it is not possible (including absolute links).
2013sub normalize_link_target {
2014        my ($link_target, $basedir, $hash_base) = @_;
2015
2016        # we can normalize symlink target only if $hash_base is provided
2017        return unless $hash_base;
2018
2019        # absolute symlinks (beginning with '/') cannot be normalized
2020        return if (substr($link_target, 0, 1) eq '/');
2021
2022        # normalize link target to path from top (root) tree (dir)
2023        my $path;
2024        if ($basedir) {
2025                $path = $basedir . '/' . $link_target;
2026        } else {
2027                # we are in top (root) tree (dir)
2028                $path = $link_target;
2029        }
2030
2031        # remove //, /./, and /../
2032        my @path_parts;
2033        foreach my $part (split('/', $path)) {
2034                # discard '.' and ''
2035                next if (!$part || $part eq '.');
2036                # handle '..'
2037                if ($part eq '..') {
2038                        if (@path_parts) {
2039                                pop @path_parts;
2040                        } else {
2041                                # link leads outside repository (outside top dir)
2042                                return;
2043                        }
2044                } else {
2045                        push @path_parts, $part;
2046                }
2047        }
2048        $path = join('/', @path_parts);
2049
2050        return $path;
2051}
2052
2053# print tree entry (row of git_tree), but without encompassing <tr> element
2054sub git_print_tree_entry {
2055        my ($t, $basedir, $hash_base, $have_blame) = @_;
2056
2057        my %base_key = ();
2058        $base_key{'hash_base'} = $hash_base if defined $hash_base;
2059
2060        # The format of a table row is: mode list link.  Where mode is
2061        # the mode of the entry, list is the name of the entry, an href,
2062        # and link is the action links of the entry.
2063
2064        print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
2065        if ($t->{'type'} eq "blob") {
2066                print "<td class=\"list\">" .
2067                        $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2068                                               file_name=>"$basedir$t->{'name'}", %base_key),
2069                                -class => "list"}, esc_path($t->{'name'}));
2070                if (S_ISLNK(oct $t->{'mode'})) {
2071                        my $link_target = git_get_link_target($t->{'hash'});
2072                        if ($link_target) {
2073                                my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
2074                                if (defined $norm_target) {
2075                                        print " -> " .
2076                                              $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
2077                                                                     file_name=>$norm_target),
2078                                                       -title => $norm_target}, esc_path($link_target));
2079                                } else {
2080                                        print " -> " . esc_path($link_target);
2081                                }
2082                        }
2083                }
2084                print "</td>\n";
2085                print "<td class=\"link\">";
2086                print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2087                                             file_name=>"$basedir$t->{'name'}", %base_key)},
2088                              "blob");
2089                if ($have_blame) {
2090                        print " | " .
2091                              $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
2092                                                     file_name=>"$basedir$t->{'name'}", %base_key)},
2093                                      "blame");
2094                }
2095                if (defined $hash_base) {
2096                        print " | " .
2097                              $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2098                                                     hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
2099                                      "history");
2100                }
2101                print " | " .
2102                        $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
2103                                               file_name=>"$basedir$t->{'name'}")},
2104                                "raw");
2105                print "</td>\n";
2106
2107        } elsif ($t->{'type'} eq "tree") {
2108                print "<td class=\"list\">";
2109                print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2110                                             file_name=>"$basedir$t->{'name'}", %base_key)},
2111                              esc_path($t->{'name'}));
2112                print "</td>\n";
2113                print "<td class=\"link\">";
2114                print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2115                                             file_name=>"$basedir$t->{'name'}", %base_key)},
2116                              "tree");
2117                if (defined $hash_base) {
2118                        print " | " .
2119                              $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2120                                                     file_name=>"$basedir$t->{'name'}")},
2121                                      "history");
2122                }
2123                print "</td>\n";
2124        }
2125}
2126
2127## ......................................................................
2128## functions printing large fragments of HTML
2129
2130sub git_difftree_body {
2131        my ($difftree, $hash, $parent) = @_;
2132        my ($have_blame) = gitweb_check_feature('blame');
2133        print "<div class=\"list_head\">\n";
2134        if ($#{$difftree} > 10) {
2135                print(($#{$difftree} + 1) . " files changed:\n");
2136        }
2137        print "</div>\n";
2138
2139        print "<table class=\"diff_tree\">\n";
2140        my $alternate = 1;
2141        my $patchno = 0;
2142        foreach my $line (@{$difftree}) {
2143                my %diff = parse_difftree_raw_line($line);
2144
2145                if ($alternate) {
2146                        print "<tr class=\"dark\">\n";
2147                } else {
2148                        print "<tr class=\"light\">\n";
2149                }
2150                $alternate ^= 1;
2151
2152                my ($to_mode_oct, $to_mode_str, $to_file_type);
2153                my ($from_mode_oct, $from_mode_str, $from_file_type);
2154                if ($diff{'to_mode'} ne ('0' x 6)) {
2155                        $to_mode_oct = oct $diff{'to_mode'};
2156                        if (S_ISREG($to_mode_oct)) { # only for regular file
2157                                $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
2158                        }
2159                        $to_file_type = file_type($diff{'to_mode'});
2160                }
2161                if ($diff{'from_mode'} ne ('0' x 6)) {
2162                        $from_mode_oct = oct $diff{'from_mode'};
2163                        if (S_ISREG($to_mode_oct)) { # only for regular file
2164                                $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
2165                        }
2166                        $from_file_type = file_type($diff{'from_mode'});
2167                }
2168
2169                if ($diff{'status'} eq "A") { # created
2170                        my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
2171                        $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
2172                        $mode_chng   .= "]</span>";
2173                        print "<td>";
2174                        print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2175                                                     hash_base=>$hash, file_name=>$diff{'file'}),
2176                                      -class => "list"}, esc_path($diff{'file'}));
2177                        print "</td>\n";
2178                        print "<td>$mode_chng</td>\n";
2179                        print "<td class=\"link\">";
2180                        if ($action eq 'commitdiff') {
2181                                # link to patch
2182                                $patchno++;
2183                                print $cgi->a({-href => "#patch$patchno"}, "patch");
2184                                print " | ";
2185                        }
2186                        print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2187                                                     hash_base=>$hash, file_name=>$diff{'file'})},
2188                                      "blob") . " | ";
2189                        print "</td>\n";
2190
2191                } elsif ($diff{'status'} eq "D") { # deleted
2192                        my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
2193                        print "<td>";
2194                        print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
2195                                                     hash_base=>$parent, file_name=>$diff{'file'}),
2196                                       -class => "list"}, esc_path($diff{'file'}));
2197                        print "</td>\n";
2198                        print "<td>$mode_chng</td>\n";
2199                        print "<td class=\"link\">";
2200                        if ($action eq 'commitdiff') {
2201                                # link to patch
2202                                $patchno++;
2203                                print $cgi->a({-href => "#patch$patchno"}, "patch");
2204                                print " | ";
2205                        }
2206                        print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
2207                                                     hash_base=>$parent, file_name=>$diff{'file'})},
2208                                      "blob") . " | ";
2209                        if ($have_blame) {
2210                                print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
2211                                                             file_name=>$diff{'file'})},
2212                                              "blame") . " | ";
2213                        }
2214                        print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
2215                                                     file_name=>$diff{'file'})},
2216                                      "history");
2217                        print "</td>\n";
2218
2219                } elsif ($diff{'status'} eq "M" || $diff{'status'} eq "T") { # modified, or type changed
2220                        my $mode_chnge = "";
2221                        if ($diff{'from_mode'} != $diff{'to_mode'}) {
2222                                $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
2223                                if ($from_file_type != $to_file_type) {
2224                                        $mode_chnge .= " from $from_file_type to $to_file_type";
2225                                }
2226                                if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
2227                                        if ($from_mode_str && $to_mode_str) {
2228                                                $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
2229                                        } elsif ($to_mode_str) {
2230                                                $mode_chnge .= " mode: $to_mode_str";
2231                                        }
2232                                }
2233                                $mode_chnge .= "]</span>\n";
2234                        }
2235                        print "<td>";
2236                        print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2237                                                     hash_base=>$hash, file_name=>$diff{'file'}),
2238                                      -class => "list"}, esc_path($diff{'file'}));
2239                        print "</td>\n";
2240                        print "<td>$mode_chnge</td>\n";
2241                        print "<td class=\"link\">";
2242                        if ($action eq 'commitdiff') {
2243                                # link to patch
2244                                $patchno++;
2245                                print $cgi->a({-href => "#patch$patchno"}, "patch") .
2246                                      " | ";
2247                        } elsif ($diff{'to_id'} ne $diff{'from_id'}) {
2248                                # "commit" view and modified file (not onlu mode changed)
2249                                print $cgi->a({-href => href(action=>"blobdiff",
2250                                                             hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
2251                                                             hash_base=>$hash, hash_parent_base=>$parent,
2252                                                             file_name=>$diff{'file'})},
2253                                              "diff") .
2254                                      " | ";
2255                        }
2256                        print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2257                                                     hash_base=>$hash, file_name=>$diff{'file'})},
2258                                       "blob") . " | ";
2259                        if ($have_blame) {
2260                                print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2261                                                             file_name=>$diff{'file'})},
2262                                              "blame") . " | ";
2263                        }
2264                        print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2265                                                     file_name=>$diff{'file'})},
2266                                      "history");
2267                        print "</td>\n";
2268
2269                } elsif ($diff{'status'} eq "R" || $diff{'status'} eq "C") { # renamed or copied
2270                        my %status_name = ('R' => 'moved', 'C' => 'copied');
2271                        my $nstatus = $status_name{$diff{'status'}};
2272                        my $mode_chng = "";
2273                        if ($diff{'from_mode'} != $diff{'to_mode'}) {
2274                                # mode also for directories, so we cannot use $to_mode_str
2275                                $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
2276                        }
2277                        print "<td>" .
2278                              $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2279                                                     hash=>$diff{'to_id'}, file_name=>$diff{'to_file'}),
2280                                      -class => "list"}, esc_path($diff{'to_file'})) . "</td>\n" .
2281                              "<td><span class=\"file_status $nstatus\">[$nstatus from " .
2282                              $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
2283                                                     hash=>$diff{'from_id'}, file_name=>$diff{'from_file'}),
2284                                      -class => "list"}, esc_path($diff{'from_file'})) .
2285                              " with " . (int $diff{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
2286                              "<td class=\"link\">";
2287                        if ($action eq 'commitdiff') {
2288                                # link to patch
2289                                $patchno++;
2290                                print $cgi->a({-href => "#patch$patchno"}, "patch") .
2291                                      " | ";
2292                        } elsif ($diff{'to_id'} ne $diff{'from_id'}) {
2293                                # "commit" view and modified file (not only pure rename or copy)
2294                                print $cgi->a({-href => href(action=>"blobdiff",
2295                                                             hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
2296                                                             hash_base=>$hash, hash_parent_base=>$parent,
2297                                                             file_name=>$diff{'to_file'}, file_parent=>$diff{'from_file'})},
2298                                              "diff") .
2299                                      " | ";
2300                        }
2301                        print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2302                                                     hash_base=>$parent, file_name=>$diff{'to_file'})},
2303                                      "blob") . " | ";
2304                        if ($have_blame) {
2305                                print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2306                                                             file_name=>$diff{'to_file'})},
2307                                              "blame") . " | ";
2308                        }
2309                        print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2310                                                    file_name=>$diff{'to_file'})},
2311                                      "history");
2312                        print "</td>\n";
2313
2314                } # we should not encounter Unmerged (U) or Unknown (X) status
2315                print "</tr>\n";
2316        }
2317        print "</table>\n";
2318}
2319
2320sub git_patchset_body {
2321        my ($fd, $difftree, $hash, $hash_parent) = @_;
2322
2323        my $patch_idx = 0;
2324        my $patch_line;
2325        my $diffinfo;
2326        my (%from, %to);
2327        my ($from_id, $to_id);
2328
2329        print "<div class=\"patchset\">\n";
2330
2331        # skip to first patch
2332        while ($patch_line = <$fd>) {
2333                chomp $patch_line;
2334
2335                last if ($patch_line =~ m/^diff /);
2336        }
2337
2338 PATCH:
2339        while ($patch_line) {
2340                my @diff_header;
2341
2342                # git diff header
2343                #assert($patch_line =~ m/^diff /) if DEBUG;
2344                #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
2345                push @diff_header, $patch_line;
2346
2347                # extended diff header
2348        EXTENDED_HEADER:
2349                while ($patch_line = <$fd>) {
2350                        chomp $patch_line;
2351
2352                        last EXTENDED_HEADER if ($patch_line =~ m/^--- /);
2353
2354                        if ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
2355                                $from_id = $1;
2356                                $to_id   = $2;
2357                        }
2358
2359                        push @diff_header, $patch_line;
2360                }
2361                #last PATCH unless $patch_line;
2362                my $last_patch_line = $patch_line;
2363
2364                # check if current patch belong to current raw line
2365                # and parse raw git-diff line if needed
2366                if (defined $diffinfo &&
2367                    $diffinfo->{'from_id'} eq $from_id &&
2368                    $diffinfo->{'to_id'}   eq $to_id) {
2369                        # this is split patch
2370                        print "<div class=\"patch cont\">\n";
2371                } else {
2372                        # advance raw git-diff output if needed
2373                        $patch_idx++ if defined $diffinfo;
2374
2375                        # read and prepare patch information
2376                        if (ref($difftree->[$patch_idx]) eq "HASH") {
2377                                # pre-parsed (or generated by hand)
2378                                $diffinfo = $difftree->[$patch_idx];
2379                        } else {
2380                                $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
2381                        }
2382                        $from{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
2383                        $to{'file'}   = $diffinfo->{'to_file'}   || $diffinfo->{'file'};
2384                        if ($diffinfo->{'status'} ne "A") { # not new (added) file
2385                                $from{'href'} = href(action=>"blob", hash_base=>$hash_parent,
2386                                                     hash=>$diffinfo->{'from_id'},
2387                                                     file_name=>$from{'file'});
2388                        }
2389                        if ($diffinfo->{'status'} ne "D") { # not deleted file
2390                                $to{'href'} = href(action=>"blob", hash_base=>$hash,
2391                                                   hash=>$diffinfo->{'to_id'},
2392                                                   file_name=>$to{'file'});
2393                        }
2394                        # this is first patch for raw difftree line with $patch_idx index
2395                        # we index @$difftree array from 0, but number patches from 1
2396                        print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
2397                }
2398
2399                # print "git diff" header
2400                $patch_line = shift @diff_header;
2401                $patch_line =~ s!^(diff (.*?) )"?a/.*$!$1!;
2402                if ($from{'href'}) {
2403                        $patch_line .= $cgi->a({-href => $from{'href'}, -class => "path"},
2404                                               'a/' . esc_path($from{'file'}));
2405                } else { # file was added
2406                        $patch_line .= 'a/' . esc_path($from{'file'});
2407                }
2408                $patch_line .= ' ';
2409                if ($to{'href'}) {
2410                        $patch_line .= $cgi->a({-href => $to{'href'}, -class => "path"},
2411                                               'b/' . esc_path($to{'file'}));
2412                } else { # file was deleted
2413                        $patch_line .= 'b/' . esc_path($to{'file'});
2414                }
2415                print "<div class=\"diff header\">$patch_line</div>\n";
2416
2417                # print extended diff header
2418                print "<div class=\"diff extended_header\">\n" if (@diff_header > 0);
2419        EXTENDED_HEADER:
2420                foreach $patch_line (@diff_header) {
2421                        # match <path>
2422                        if ($patch_line =~ s!^((copy|rename) from ).*$!$1! && $from{'href'}) {
2423                                $patch_line .= $cgi->a({-href=>$from{'href'}, -class=>"path"},
2424                                                        esc_path($from{'file'}));
2425                        }
2426                        if ($patch_line =~ s!^((copy|rename) to ).*$!$1! && $to{'href'}) {
2427                                $patch_line = $cgi->a({-href=>$to{'href'}, -class=>"path"},
2428                                                      esc_path($to{'file'}));
2429                        }
2430                        # match <mode>
2431                        if ($patch_line =~ m/\s(\d{6})$/) {
2432                                $patch_line .= '<span class="info"> (' .
2433                                               file_type_long($1) .
2434                                               ')</span>';
2435                        }
2436                        # match <hash>
2437                        if ($patch_line =~ m/^index/) {
2438                                my ($from_link, $to_link);
2439                                if ($from{'href'}) {
2440                                        $from_link = $cgi->a({-href=>$from{'href'}, -class=>"hash"},
2441                                                             substr($diffinfo->{'from_id'},0,7));
2442                                } else {
2443                                        $from_link = '0' x 7;
2444                                }
2445                                if ($to{'href'}) {
2446                                        $to_link = $cgi->a({-href=>$to{'href'}, -class=>"hash"},
2447                                                           substr($diffinfo->{'to_id'},0,7));
2448                                } else {
2449                                        $to_link = '0' x 7;
2450                                }
2451                                #affirm {
2452                                #       my ($from_hash, $to_hash) =
2453                                #               ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/);
2454                                #       my ($from_id, $to_id) =
2455                                #               ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2456                                #       ($from_hash eq $from_id) && ($to_hash eq $to_id);
2457                                #} if DEBUG;
2458                                my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2459                                $patch_line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
2460                        }
2461                        print $patch_line . "<br/>\n";
2462                }
2463                print "</div>\n"  if (@diff_header > 0); # class="diff extended_header"
2464
2465                # from-file/to-file diff header
2466                $patch_line = $last_patch_line;
2467                #assert($patch_line =~ m/^---/) if DEBUG;
2468                if ($from{'href'}) {
2469                        $patch_line = '--- a/' .
2470                                      $cgi->a({-href=>$from{'href'}, -class=>"path"},
2471                                              esc_path($from{'file'}));
2472                }
2473                print "<div class=\"diff from_file\">$patch_line</div>\n";
2474
2475                $patch_line = <$fd>;
2476                #last PATCH unless $patch_line;
2477                chomp $patch_line;
2478
2479                #assert($patch_line =~ m/^+++/) if DEBUG;
2480                if ($to{'href'}) {
2481                        $patch_line = '+++ b/' .
2482                                      $cgi->a({-href=>$to{'href'}, -class=>"path"},
2483                                              esc_path($to{'file'}));
2484                }
2485                print "<div class=\"diff to_file\">$patch_line</div>\n";
2486
2487                # the patch itself
2488        LINE:
2489                while ($patch_line = <$fd>) {
2490                        chomp $patch_line;
2491
2492                        next PATCH if ($patch_line =~ m/^diff /);
2493
2494                        print format_diff_line($patch_line, \%from, \%to);
2495                }
2496
2497        } continue {
2498                print "</div>\n"; # class="patch"
2499        }
2500
2501        print "</div>\n"; # class="patchset"
2502}
2503
2504# . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2505
2506sub git_project_list_body {
2507        my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
2508
2509        my ($check_forks) = gitweb_check_feature('forks');
2510
2511        my @projects;
2512        foreach my $pr (@$projlist) {
2513                my (@aa) = git_get_last_activity($pr->{'path'});
2514                unless (@aa) {
2515                        next;
2516                }
2517                ($pr->{'age'}, $pr->{'age_string'}) = @aa;
2518                if (!defined $pr->{'descr'}) {
2519                        my $descr = git_get_project_description($pr->{'path'}) || "";
2520                        $pr->{'descr_long'} = to_utf8($descr);
2521                        $pr->{'descr'} = chop_str($descr, 25, 5);
2522                }
2523                if (!defined $pr->{'owner'}) {
2524                        $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
2525                }
2526                if ($check_forks) {
2527                        my $pname = $pr->{'path'};
2528                        if (($pname =~ s/\.git$//) &&
2529                            ($pname !~ /\/$/) &&
2530                            (-d "$projectroot/$pname")) {
2531                                $pr->{'forks'} = "-d $projectroot/$pname";
2532                        }
2533                        else {
2534                                $pr->{'forks'} = 0;
2535                        }
2536                }
2537                push @projects, $pr;
2538        }
2539
2540        $order ||= "project";
2541        $from = 0 unless defined $from;
2542        $to = $#projects if (!defined $to || $#projects < $to);
2543
2544        print "<table class=\"project_list\">\n";
2545        unless ($no_header) {
2546                print "<tr>\n";
2547                if ($check_forks) {
2548                        print "<th></th>\n";
2549                }
2550                if ($order eq "project") {
2551                        @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
2552                        print "<th>Project</th>\n";
2553                } else {
2554                        print "<th>" .
2555                              $cgi->a({-href => href(project=>undef, order=>'project'),
2556                                       -class => "header"}, "Project") .
2557                              "</th>\n";
2558                }
2559                if ($order eq "descr") {
2560                        @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
2561                        print "<th>Description</th>\n";
2562                } else {
2563                        print "<th>" .
2564                              $cgi->a({-href => href(project=>undef, order=>'descr'),
2565                                       -class => "header"}, "Description") .
2566                              "</th>\n";
2567                }
2568                if ($order eq "owner") {
2569                        @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
2570                        print "<th>Owner</th>\n";
2571                } else {
2572                        print "<th>" .
2573                              $cgi->a({-href => href(project=>undef, order=>'owner'),
2574                                       -class => "header"}, "Owner") .
2575                              "</th>\n";
2576                }
2577                if ($order eq "age") {
2578                        @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
2579                        print "<th>Last Change</th>\n";
2580                } else {
2581                        print "<th>" .
2582                              $cgi->a({-href => href(project=>undef, order=>'age'),
2583                                       -class => "header"}, "Last Change") .
2584                              "</th>\n";
2585                }
2586                print "<th></th>\n" .
2587                      "</tr>\n";
2588        }
2589        my $alternate = 1;
2590        for (my $i = $from; $i <= $to; $i++) {
2591                my $pr = $projects[$i];
2592                if ($alternate) {
2593                        print "<tr class=\"dark\">\n";
2594                } else {
2595                        print "<tr class=\"light\">\n";
2596                }
2597                $alternate ^= 1;
2598                if ($check_forks) {
2599                        print "<td>";
2600                        if ($pr->{'forks'}) {
2601                                print "<!-- $pr->{'forks'} -->\n";
2602                                print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
2603                        }
2604                        print "</td>\n";
2605                }
2606                print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2607                                        -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
2608                      "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2609                                        -class => "list", -title => $pr->{'descr_long'}},
2610                                        esc_html($pr->{'descr'})) . "</td>\n" .
2611                      "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
2612                print "<td class=\"". age_class($pr->{'age'}) . "\">" .
2613                      $pr->{'age_string'} . "</td>\n" .
2614                      "<td class=\"link\">" .
2615                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
2616                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
2617                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
2618                      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
2619                      ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
2620                      "</td>\n" .
2621                      "</tr>\n";
2622        }
2623        if (defined $extra) {
2624                print "<tr>\n";
2625                if ($check_forks) {
2626                        print "<td></td>\n";
2627                }
2628                print "<td colspan=\"5\">$extra</td>\n" .
2629                      "</tr>\n";
2630        }
2631        print "</table>\n";
2632}
2633
2634sub git_shortlog_body {
2635        # uses global variable $project
2636        my ($revlist, $from, $to, $refs, $extra) = @_;
2637
2638        $from = 0 unless defined $from;
2639        $to = $#{$revlist} if (!defined $to || $#{$revlist} < $to);
2640
2641        print "<table class=\"shortlog\" cellspacing=\"0\">\n";
2642        my $alternate = 1;
2643        for (my $i = $from; $i <= $to; $i++) {
2644                my $commit = $revlist->[$i];
2645                #my $ref = defined $refs ? format_ref_marker($refs, $commit) : '';
2646                my $ref = format_ref_marker($refs, $commit);
2647                my %co = parse_commit($commit);
2648                if ($alternate) {
2649                        print "<tr class=\"dark\">\n";
2650                } else {
2651                        print "<tr class=\"light\">\n";
2652                }
2653                $alternate ^= 1;
2654                # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
2655                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2656                      "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
2657                      "<td>";
2658                print format_subject_html($co{'title'}, $co{'title_short'},
2659                                          href(action=>"commit", hash=>$commit), $ref);
2660                print "</td>\n" .
2661                      "<td class=\"link\">" .
2662                      $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
2663                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
2664                      $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
2665                if (gitweb_have_snapshot()) {
2666                        print " | " . $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
2667                }
2668                print "</td>\n" .
2669                      "</tr>\n";
2670        }
2671        if (defined $extra) {
2672                print "<tr>\n" .
2673                      "<td colspan=\"4\">$extra</td>\n" .
2674                      "</tr>\n";
2675        }
2676        print "</table>\n";
2677}
2678
2679sub git_history_body {
2680        # Warning: assumes constant type (blob or tree) during history
2681        my ($revlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
2682
2683        $from = 0 unless defined $from;
2684        $to = $#{$revlist} unless (defined $to && $to <= $#{$revlist});
2685
2686        print "<table class=\"history\" cellspacing=\"0\">\n";
2687        my $alternate = 1;
2688        for (my $i = $from; $i <= $to; $i++) {
2689                if ($revlist->[$i] !~ m/^([0-9a-fA-F]{40})/) {
2690                        next;
2691                }
2692
2693                my $commit = $1;
2694                my %co = parse_commit($commit);
2695                if (!%co) {
2696                        next;
2697                }
2698
2699                my $ref = format_ref_marker($refs, $commit);
2700
2701                if ($alternate) {
2702                        print "<tr class=\"dark\">\n";
2703                } else {
2704                        print "<tr class=\"light\">\n";
2705                }
2706                $alternate ^= 1;
2707                print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2708                      # shortlog uses      chop_str($co{'author_name'}, 10)
2709                      "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
2710                      "<td>";
2711                # originally git_history used chop_str($co{'title'}, 50)
2712                print format_subject_html($co{'title'}, $co{'title_short'},
2713                                          href(action=>"commit", hash=>$commit), $ref);
2714                print "</td>\n" .
2715                      "<td class=\"link\">" .
2716                      $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
2717                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
2718
2719                if ($ftype eq 'blob') {
2720                        my $blob_current = git_get_hash_by_path($hash_base, $file_name);
2721                        my $blob_parent  = git_get_hash_by_path($commit, $file_name);
2722                        if (defined $blob_current && defined $blob_parent &&
2723                                        $blob_current ne $blob_parent) {
2724                                print " | " .
2725                                        $cgi->a({-href => href(action=>"blobdiff",
2726                                                               hash=>$blob_current, hash_parent=>$blob_parent,
2727                                                               hash_base=>$hash_base, hash_parent_base=>$commit,
2728                                                               file_name=>$file_name)},
2729                                                "diff to current");
2730                        }
2731                }
2732                print "</td>\n" .
2733                      "</tr>\n";
2734        }
2735        if (defined $extra) {
2736                print "<tr>\n" .
2737                      "<td colspan=\"4\">$extra</td>\n" .
2738                      "</tr>\n";
2739        }
2740        print "</table>\n";
2741}
2742
2743sub git_tags_body {
2744        # uses global variable $project
2745        my ($taglist, $from, $to, $extra) = @_;
2746        $from = 0 unless defined $from;
2747        $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
2748
2749        print "<table class=\"tags\" cellspacing=\"0\">\n";
2750        my $alternate = 1;
2751        for (my $i = $from; $i <= $to; $i++) {
2752                my $entry = $taglist->[$i];
2753                my %tag = %$entry;
2754                my $comment = $tag{'subject'};
2755                my $comment_short;
2756                if (defined $comment) {
2757                        $comment_short = chop_str($comment, 30, 5);
2758                }
2759                if ($alternate) {
2760                        print "<tr class=\"dark\">\n";
2761                } else {
2762                        print "<tr class=\"light\">\n";
2763                }
2764                $alternate ^= 1;
2765                print "<td><i>$tag{'age'}</i></td>\n" .
2766                      "<td>" .
2767                      $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
2768                               -class => "list name"}, esc_html($tag{'name'})) .
2769                      "</td>\n" .
2770                      "<td>";
2771                if (defined $comment) {
2772                        print format_subject_html($comment, $comment_short,
2773                                                  href(action=>"tag", hash=>$tag{'id'}));
2774                }
2775                print "</td>\n" .
2776                      "<td class=\"selflink\">";
2777                if ($tag{'type'} eq "tag") {
2778                        print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
2779                } else {
2780                        print "&nbsp;";
2781                }
2782                print "</td>\n" .
2783                      "<td class=\"link\">" . " | " .
2784                      $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
2785                if ($tag{'reftype'} eq "commit") {
2786                        print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
2787                              " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log");
2788                } elsif ($tag{'reftype'} eq "blob") {
2789                        print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
2790                }
2791                print "</td>\n" .
2792                      "</tr>";
2793        }
2794        if (defined $extra) {
2795                print "<tr>\n" .
2796                      "<td colspan=\"5\">$extra</td>\n" .
2797                      "</tr>\n";
2798        }
2799        print "</table>\n";
2800}
2801
2802sub git_heads_body {
2803        # uses global variable $project
2804        my ($headlist, $head, $from, $to, $extra) = @_;
2805        $from = 0 unless defined $from;
2806        $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
2807
2808        print "<table class=\"heads\" cellspacing=\"0\">\n";
2809        my $alternate = 1;
2810        for (my $i = $from; $i <= $to; $i++) {
2811                my $entry = $headlist->[$i];
2812                my %ref = %$entry;
2813                my $curr = $ref{'id'} eq $head;
2814                if ($alternate) {
2815                        print "<tr class=\"dark\">\n";
2816                } else {
2817                        print "<tr class=\"light\">\n";
2818                }
2819                $alternate ^= 1;
2820                print "<td><i>$ref{'age'}</i></td>\n" .
2821                      ($curr ? "<td class=\"current_head\">" : "<td>") .
2822                      $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'}),
2823                               -class => "list name"},esc_html($ref{'name'})) .
2824                      "</td>\n" .
2825                      "<td class=\"link\">" .
2826                      $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'})}, "shortlog") . " | " .
2827                      $cgi->a({-href => href(action=>"log", hash=>$ref{'name'})}, "log") . " | " .
2828                      $cgi->a({-href => href(action=>"tree", hash=>$ref{'name'}, hash_base=>$ref{'name'})}, "tree") .
2829                      "</td>\n" .
2830                      "</tr>";
2831        }
2832        if (defined $extra) {
2833                print "<tr>\n" .
2834                      "<td colspan=\"3\">$extra</td>\n" .
2835                      "</tr>\n";
2836        }
2837        print "</table>\n";
2838}
2839
2840## ======================================================================
2841## ======================================================================
2842## actions
2843
2844sub git_project_list {
2845        my $order = $cgi->param('o');
2846        if (defined $order && $order !~ m/project|descr|owner|age/) {
2847                die_error(undef, "Unknown order parameter");
2848        }
2849
2850        my @list = git_get_projects_list();
2851        if (!@list) {
2852                die_error(undef, "No projects found");
2853        }
2854
2855        git_header_html();
2856        if (-f $home_text) {
2857                print "<div class=\"index_include\">\n";
2858                open (my $fd, $home_text);
2859                print <$fd>;
2860                close $fd;
2861                print "</div>\n";
2862        }
2863        git_project_list_body(\@list, $order);
2864        git_footer_html();
2865}
2866
2867sub git_forks {
2868        my $order = $cgi->param('o');
2869        if (defined $order && $order !~ m/project|descr|owner|age/) {
2870                die_error(undef, "Unknown order parameter");
2871        }
2872
2873        my @list = git_get_projects_list($project);
2874        if (!@list) {
2875                die_error(undef, "No forks found");
2876        }
2877
2878        git_header_html();
2879        git_print_page_nav('','');
2880        git_print_header_div('summary', "$project forks");
2881        git_project_list_body(\@list, $order);
2882        git_footer_html();
2883}
2884
2885sub git_project_index {
2886        my @projects = git_get_projects_list($project);
2887
2888        print $cgi->header(
2889                -type => 'text/plain',
2890                -charset => 'utf-8',
2891                -content_disposition => 'inline; filename="index.aux"');
2892
2893        foreach my $pr (@projects) {
2894                if (!exists $pr->{'owner'}) {
2895                        $pr->{'owner'} = get_file_owner("$projectroot/$project");
2896                }
2897
2898                my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
2899                # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
2900                $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
2901                $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
2902                $path  =~ s/ /\+/g;
2903                $owner =~ s/ /\+/g;
2904
2905                print "$path $owner\n";
2906        }
2907}
2908
2909sub git_summary {
2910        my $descr = git_get_project_description($project) || "none";
2911        my $head = git_get_head_hash($project);
2912        my %co = parse_commit($head);
2913        my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
2914
2915        my $owner = git_get_project_owner($project);
2916
2917        my $refs = git_get_references();
2918        # These get_*_list functions return one more to allow us to see if
2919        # there are more ...
2920        my @taglist  = git_get_tags_list(16);
2921        my @headlist = git_get_heads_list(16);
2922        my @forklist;
2923        my ($check_forks) = gitweb_check_feature('forks');
2924
2925        if ($check_forks) {
2926                @forklist = git_get_projects_list($project);
2927        }
2928
2929        git_header_html();
2930        git_print_page_nav('summary','', $head);
2931
2932        print "<div class=\"title\">&nbsp;</div>\n";
2933        print "<table cellspacing=\"0\">\n" .
2934              "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
2935              "<tr><td>owner</td><td>$owner</td></tr>\n" .
2936              "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
2937        # use per project git URL list in $projectroot/$project/cloneurl
2938        # or make project git URL from git base URL and project name
2939        my $url_tag = "URL";
2940        my @url_list = git_get_project_url_list($project);
2941        @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
2942        foreach my $git_url (@url_list) {
2943                next unless $git_url;
2944                print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
2945                $url_tag = "";
2946        }
2947        print "</table>\n";
2948
2949        if (-s "$projectroot/$project/README.html") {
2950                if (open my $fd, "$projectroot/$project/README.html") {
2951                        print "<div class=\"title\">readme</div>\n";
2952                        print $_ while (<$fd>);
2953                        close $fd;
2954                }
2955        }
2956
2957        # we need to request one more than 16 (0..15) to check if
2958        # those 16 are all
2959        open my $fd, "-|", git_cmd(), "rev-list", "--max-count=17",
2960                git_get_head_hash($project), "--"
2961                or die_error(undef, "Open git-rev-list failed");
2962        my @revlist = map { chomp; $_ } <$fd>;
2963        close $fd;
2964        git_print_header_div('shortlog');
2965        git_shortlog_body(\@revlist, 0, 15, $refs,
2966                          $#revlist <=  15 ? undef :
2967                          $cgi->a({-href => href(action=>"shortlog")}, "..."));
2968
2969        if (@taglist) {
2970                git_print_header_div('tags');
2971                git_tags_body(\@taglist, 0, 15,
2972                              $#taglist <=  15 ? undef :
2973                              $cgi->a({-href => href(action=>"tags")}, "..."));
2974        }
2975
2976        if (@headlist) {
2977                git_print_header_div('heads');
2978                git_heads_body(\@headlist, $head, 0, 15,
2979                               $#headlist <= 15 ? undef :
2980                               $cgi->a({-href => href(action=>"heads")}, "..."));
2981        }
2982
2983        if (@forklist) {
2984                git_print_header_div('forks');
2985                git_project_list_body(\@forklist, undef, 0, 15,
2986                                      $cgi->a({-href => href(action=>"forks")}, "..."),
2987                                      'noheader');
2988        }
2989
2990        git_footer_html();
2991}
2992
2993sub git_tag {
2994        my $head = git_get_head_hash($project);
2995        git_header_html();
2996        git_print_page_nav('','', $head,undef,$head);
2997        my %tag = parse_tag($hash);
2998        git_print_header_div('commit', esc_html($tag{'name'}), $hash);
2999        print "<div class=\"title_text\">\n" .
3000              "<table cellspacing=\"0\">\n" .
3001              "<tr>\n" .
3002              "<td>object</td>\n" .
3003              "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3004                               $tag{'object'}) . "</td>\n" .
3005              "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3006                                              $tag{'type'}) . "</td>\n" .
3007              "</tr>\n";
3008        if (defined($tag{'author'})) {
3009                my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
3010                print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
3011                print "<tr><td></td><td>" . $ad{'rfc2822'} .
3012                        sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
3013                        "</td></tr>\n";
3014        }
3015        print "</table>\n\n" .
3016              "</div>\n";
3017        print "<div class=\"page_body\">";
3018        my $comment = $tag{'comment'};
3019        foreach my $line (@$comment) {
3020                chomp $line;
3021                print esc_html($line, -nbsp=>1) . "<br/>\n";
3022        }
3023        print "</div>\n";
3024        git_footer_html();
3025}
3026
3027sub git_blame2 {
3028        my $fd;
3029        my $ftype;
3030
3031        my ($have_blame) = gitweb_check_feature('blame');
3032        if (!$have_blame) {
3033                die_error('403 Permission denied', "Permission denied");
3034        }
3035        die_error('404 Not Found', "File name not defined") if (!$file_name);
3036        $hash_base ||= git_get_head_hash($project);
3037        die_error(undef, "Couldn't find base commit") unless ($hash_base);
3038        my %co = parse_commit($hash_base)
3039                or die_error(undef, "Reading commit failed");
3040        if (!defined $hash) {
3041                $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3042                        or die_error(undef, "Error looking up file");
3043        }
3044        $ftype = git_get_type($hash);
3045        if ($ftype !~ "blob") {
3046                die_error("400 Bad Request", "Object is not a blob");
3047        }
3048        open ($fd, "-|", git_cmd(), "blame", '-p', '--',
3049              $file_name, $hash_base)
3050                or die_error(undef, "Open git-blame failed");
3051        git_header_html();
3052        my $formats_nav =
3053                $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3054                        "blob") .
3055                " | " .
3056                $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3057                        "history") .
3058                " | " .
3059                $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3060                        "HEAD");
3061        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3062        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3063        git_print_page_path($file_name, $ftype, $hash_base);
3064        my @rev_color = (qw(light2 dark2));
3065        my $num_colors = scalar(@rev_color);
3066        my $current_color = 0;
3067        my $last_rev;
3068        print <<HTML;
3069<div class="page_body">
3070<table class="blame">
3071<tr><th>Commit</th><th>Line</th><th>Data</th></tr>
3072HTML
3073        my %metainfo = ();
3074        while (1) {
3075                $_ = <$fd>;
3076                last unless defined $_;
3077                my ($full_rev, $orig_lineno, $lineno, $group_size) =
3078                    /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
3079                if (!exists $metainfo{$full_rev}) {
3080                        $metainfo{$full_rev} = {};
3081                }
3082                my $meta = $metainfo{$full_rev};
3083                while (<$fd>) {
3084                        last if (s/^\t//);
3085                        if (/^(\S+) (.*)$/) {
3086                                $meta->{$1} = $2;
3087                        }
3088                }
3089                my $data = $_;
3090                chomp $data;
3091                my $rev = substr($full_rev, 0, 8);
3092                my $author = $meta->{'author'};
3093                my %date = parse_date($meta->{'author-time'},
3094                                      $meta->{'author-tz'});
3095                my $date = $date{'iso-tz'};
3096                if ($group_size) {
3097                        $current_color = ++$current_color % $num_colors;
3098                }
3099                print "<tr class=\"$rev_color[$current_color]\">\n";
3100                if ($group_size) {
3101                        print "<td class=\"sha1\"";
3102                        print " title=\"". esc_html($author) . ", $date\"";
3103                        print " rowspan=\"$group_size\"" if ($group_size > 1);
3104                        print ">";
3105                        print $cgi->a({-href => href(action=>"commit",
3106                                                     hash=>$full_rev,
3107                                                     file_name=>$file_name)},
3108                                      esc_html($rev));
3109                        print "</td>\n";
3110                }
3111                my $blamed = href(action => 'blame',
3112                                  file_name => $meta->{'filename'},
3113                                  hash_base => $full_rev);
3114                print "<td class=\"linenr\">";
3115                print $cgi->a({ -href => "$blamed#l$orig_lineno",
3116                                -id => "l$lineno",
3117                                -class => "linenr" },
3118                              esc_html($lineno));
3119                print "</td>";
3120                print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
3121                print "</tr>\n";
3122        }
3123        print "</table>\n";
3124        print "</div>";
3125        close $fd
3126                or print "Reading blob failed\n";
3127        git_footer_html();
3128}
3129
3130sub git_blame {
3131        my $fd;
3132
3133        my ($have_blame) = gitweb_check_feature('blame');
3134        if (!$have_blame) {
3135                die_error('403 Permission denied', "Permission denied");
3136        }
3137        die_error('404 Not Found', "File name not defined") if (!$file_name);
3138        $hash_base ||= git_get_head_hash($project);
3139        die_error(undef, "Couldn't find base commit") unless ($hash_base);
3140        my %co = parse_commit($hash_base)
3141                or die_error(undef, "Reading commit failed");
3142        if (!defined $hash) {
3143                $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3144                        or die_error(undef, "Error lookup file");
3145        }
3146        open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
3147                or die_error(undef, "Open git-annotate failed");
3148        git_header_html();
3149        my $formats_nav =
3150                $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3151                        "blob") .
3152                " | " .
3153                $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3154                        "history") .
3155                " | " .
3156                $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3157                        "HEAD");
3158        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3159        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3160        git_print_page_path($file_name, 'blob', $hash_base);
3161        print "<div class=\"page_body\">\n";
3162        print <<HTML;
3163<table class="blame">
3164  <tr>
3165    <th>Commit</th>
3166    <th>Age</th>
3167    <th>Author</th>
3168    <th>Line</th>
3169    <th>Data</th>
3170  </tr>
3171HTML
3172        my @line_class = (qw(light dark));
3173        my $line_class_len = scalar (@line_class);
3174        my $line_class_num = $#line_class;
3175        while (my $line = <$fd>) {
3176                my $long_rev;
3177                my $short_rev;
3178                my $author;
3179                my $time;
3180                my $lineno;
3181                my $data;
3182                my $age;
3183                my $age_str;
3184                my $age_class;
3185
3186                chomp $line;
3187                $line_class_num = ($line_class_num + 1) % $line_class_len;
3188
3189                if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
3190                        $long_rev = $1;
3191                        $author   = $2;
3192                        $time     = $3;
3193                        $lineno   = $4;
3194                        $data     = $5;
3195                } else {
3196                        print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
3197                        next;
3198                }
3199                $short_rev  = substr ($long_rev, 0, 8);
3200                $age        = time () - $time;
3201                $age_str    = age_string ($age);
3202                $age_str    =~ s/ /&nbsp;/g;
3203                $age_class  = age_class($age);
3204                $author     = esc_html ($author);
3205                $author     =~ s/ /&nbsp;/g;
3206
3207                $data = untabify($data);
3208                $data = esc_html ($data);
3209
3210                print <<HTML;
3211  <tr class="$line_class[$line_class_num]">
3212    <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
3213    <td class="$age_class">$age_str</td>
3214    <td>$author</td>
3215    <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
3216    <td class="pre">$data</td>
3217  </tr>
3218HTML
3219        } # while (my $line = <$fd>)
3220        print "</table>\n\n";
3221        close $fd
3222                or print "Reading blob failed.\n";
3223        print "</div>";
3224        git_footer_html();
3225}
3226
3227sub git_tags {
3228        my $head = git_get_head_hash($project);
3229        git_header_html();
3230        git_print_page_nav('','', $head,undef,$head);
3231        git_print_header_div('summary', $project);
3232
3233        my @tagslist = git_get_tags_list();
3234        if (@tagslist) {
3235                git_tags_body(\@tagslist);
3236        }
3237        git_footer_html();
3238}
3239
3240sub git_heads {
3241        my $head = git_get_head_hash($project);
3242        git_header_html();
3243        git_print_page_nav('','', $head,undef,$head);
3244        git_print_header_div('summary', $project);
3245
3246        my @headslist = git_get_heads_list();
3247        if (@headslist) {
3248                git_heads_body(\@headslist, $head);
3249        }
3250        git_footer_html();
3251}
3252
3253sub git_blob_plain {
3254        my $expires;
3255
3256        if (!defined $hash) {
3257                if (defined $file_name) {
3258                        my $base = $hash_base || git_get_head_hash($project);
3259                        $hash = git_get_hash_by_path($base, $file_name, "blob")
3260                                or die_error(undef, "Error lookup file");
3261                } else {
3262                        die_error(undef, "No file name defined");
3263                }
3264        } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3265                # blobs defined by non-textual hash id's can be cached
3266                $expires = "+1d";
3267        }
3268
3269        my $type = shift;
3270        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3271                or die_error(undef, "Couldn't cat $file_name, $hash");
3272
3273        $type ||= blob_mimetype($fd, $file_name);
3274
3275        # save as filename, even when no $file_name is given
3276        my $save_as = "$hash";
3277        if (defined $file_name) {
3278                $save_as = $file_name;
3279        } elsif ($type =~ m/^text\//) {
3280                $save_as .= '.txt';
3281        }
3282
3283        print $cgi->header(
3284                -type => "$type",
3285                -expires=>$expires,
3286                -content_disposition => 'inline; filename="' . "$save_as" . '"');
3287        undef $/;
3288        binmode STDOUT, ':raw';
3289        print <$fd>;
3290        binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3291        $/ = "\n";
3292        close $fd;
3293}
3294
3295sub git_blob {
3296        my $expires;
3297
3298        if (!defined $hash) {
3299                if (defined $file_name) {
3300                        my $base = $hash_base || git_get_head_hash($project);
3301                        $hash = git_get_hash_by_path($base, $file_name, "blob")
3302                                or die_error(undef, "Error lookup file");
3303                } else {
3304                        die_error(undef, "No file name defined");
3305                }
3306        } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3307                # blobs defined by non-textual hash id's can be cached
3308                $expires = "+1d";
3309        }
3310
3311        my ($have_blame) = gitweb_check_feature('blame');
3312        open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3313                or die_error(undef, "Couldn't cat $file_name, $hash");
3314        my $mimetype = blob_mimetype($fd, $file_name);
3315        if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)!) {
3316                close $fd;
3317                return git_blob_plain($mimetype);
3318        }
3319        # we can have blame only for text/* mimetype
3320        $have_blame &&= ($mimetype =~ m!^text/!);
3321
3322        git_header_html(undef, $expires);
3323        my $formats_nav = '';
3324        if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3325                if (defined $file_name) {
3326                        if ($have_blame) {
3327                                $formats_nav .=
3328                                        $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
3329                                                               hash=>$hash, file_name=>$file_name)},
3330                                                "blame") .
3331                                        " | ";
3332                        }
3333                        $formats_nav .=
3334                                $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3335                                                       hash=>$hash, file_name=>$file_name)},
3336                                        "history") .
3337                                " | " .
3338                                $cgi->a({-href => href(action=>"blob_plain",
3339                                                       hash=>$hash, file_name=>$file_name)},
3340                                        "raw") .
3341                                " | " .
3342                                $cgi->a({-href => href(action=>"blob",
3343                                                       hash_base=>"HEAD", file_name=>$file_name)},
3344                                        "HEAD");
3345                } else {
3346                        $formats_nav .=
3347                                $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
3348                }
3349                git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3350                git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3351        } else {
3352                print "<div class=\"page_nav\">\n" .
3353                      "<br/><br/></div>\n" .
3354                      "<div class=\"title\">$hash</div>\n";
3355        }
3356        git_print_page_path($file_name, "blob", $hash_base);
3357        print "<div class=\"page_body\">\n";
3358        if ($mimetype =~ m!^text/!) {
3359                my $nr;
3360                while (my $line = <$fd>) {
3361                        chomp $line;
3362                        $nr++;
3363                        $line = untabify($line);
3364                        printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
3365                               $nr, $nr, $nr, esc_html($line, -nbsp=>1);
3366                }
3367        } elsif ($mimetype =~ m!^image/!) {
3368                print qq!<img type="$mimetype"!;
3369                if ($file_name) {
3370                        print qq! alt="$file_name" title="$file_name"!;
3371                }
3372                print qq! src="! .
3373                      href(action=>"blob_plain", hash=>$hash,
3374                           hash_base=>$hash_base, file_name=>$file_name) .
3375                      qq!" />\n!;
3376        }
3377        close $fd
3378                or print "Reading blob failed.\n";
3379        print "</div>";
3380        git_footer_html();
3381}
3382
3383sub git_tree {
3384        my $have_snapshot = gitweb_have_snapshot();
3385
3386        if (!defined $hash_base) {
3387                $hash_base = "HEAD";
3388        }
3389        if (!defined $hash) {
3390                if (defined $file_name) {
3391                        $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
3392                } else {
3393                        $hash = $hash_base;
3394                }
3395        }
3396        $/ = "\0";
3397        open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
3398                or die_error(undef, "Open git-ls-tree failed");
3399        my @entries = map { chomp; $_ } <$fd>;
3400        close $fd or die_error(undef, "Reading tree failed");
3401        $/ = "\n";
3402
3403        my $refs = git_get_references();
3404        my $ref = format_ref_marker($refs, $hash_base);
3405        git_header_html();
3406        my $basedir = '';
3407        my ($have_blame) = gitweb_check_feature('blame');
3408        if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3409                my @views_nav = ();
3410                if (defined $file_name) {
3411                        push @views_nav,
3412                                $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3413                                                       hash=>$hash, file_name=>$file_name)},
3414                                        "history"),
3415                                $cgi->a({-href => href(action=>"tree",
3416                                                       hash_base=>"HEAD", file_name=>$file_name)},
3417                                        "HEAD"),
3418                }
3419                if ($have_snapshot) {
3420                        # FIXME: Should be available when we have no hash base as well.
3421                        push @views_nav,
3422                                $cgi->a({-href => href(action=>"snapshot", hash=>$hash)},
3423                                        "snapshot");
3424                }
3425                git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
3426                git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
3427        } else {
3428                undef $hash_base;
3429                print "<div class=\"page_nav\">\n";
3430                print "<br/><br/></div>\n";
3431                print "<div class=\"title\">$hash</div>\n";
3432        }
3433        if (defined $file_name) {
3434                $basedir = $file_name;
3435                if ($basedir ne '' && substr($basedir, -1) ne '/') {
3436                        $basedir .= '/';
3437                }
3438        }
3439        git_print_page_path($file_name, 'tree', $hash_base);
3440        print "<div class=\"page_body\">\n";
3441        print "<table cellspacing=\"0\">\n";
3442        my $alternate = 1;
3443        # '..' (top directory) link if possible
3444        if (defined $hash_base &&
3445            defined $file_name && $file_name =~ m![^/]+$!) {
3446                if ($alternate) {
3447                        print "<tr class=\"dark\">\n";
3448                } else {
3449                        print "<tr class=\"light\">\n";
3450                }
3451                $alternate ^= 1;
3452
3453                my $up = $file_name;
3454                $up =~ s!/?[^/]+$!!;
3455                undef $up unless $up;
3456                # based on git_print_tree_entry
3457                print '<td class="mode">' . mode_str('040000') . "</td>\n";
3458                print '<td class="list">';
3459                print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
3460                                             file_name=>$up)},
3461                              "..");
3462                print "</td>\n";
3463                print "<td class=\"link\"></td>\n";
3464
3465                print "</tr>\n";
3466        }
3467        foreach my $line (@entries) {
3468                my %t = parse_ls_tree_line($line, -z => 1);
3469
3470                if ($alternate) {
3471                        print "<tr class=\"dark\">\n";
3472                } else {
3473                        print "<tr class=\"light\">\n";
3474                }
3475                $alternate ^= 1;
3476
3477                git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
3478
3479                print "</tr>\n";
3480        }
3481        print "</table>\n" .
3482              "</div>";
3483        git_footer_html();
3484}
3485
3486sub git_snapshot {
3487        my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
3488        my $have_snapshot = (defined $ctype && defined $suffix);
3489        if (!$have_snapshot) {
3490                die_error('403 Permission denied', "Permission denied");
3491        }
3492
3493        if (!defined $hash) {
3494                $hash = git_get_head_hash($project);
3495        }
3496
3497        my $filename = basename($project) . "-$hash.tar.$suffix";
3498
3499        print $cgi->header(
3500                -type => "application/$ctype",
3501                -content_disposition => 'inline; filename="' . "$filename" . '"',
3502                -status => '200 OK');
3503
3504        my $git = git_cmd_str();
3505        my $name = $project;
3506        $name =~ s/\047/\047\\\047\047/g;
3507        open my $fd, "-|",
3508        "$git archive --format=tar --prefix=\'$name\'/ $hash | $command"
3509                or die_error(undef, "Execute git-tar-tree failed.");
3510        binmode STDOUT, ':raw';
3511        print <$fd>;
3512        binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3513        close $fd;
3514
3515}
3516
3517sub git_log {
3518        my $head = git_get_head_hash($project);
3519        if (!defined $hash) {
3520                $hash = $head;
3521        }
3522        if (!defined $page) {
3523                $page = 0;
3524        }
3525        my $refs = git_get_references();
3526
3527        my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3528        open my $fd, "-|", git_cmd(), "rev-list", $limit, $hash, "--"
3529                or die_error(undef, "Open git-rev-list failed");
3530        my @revlist = map { chomp; $_ } <$fd>;
3531        close $fd;
3532
3533        my $paging_nav = format_paging_nav('log', $hash, $head, $page, $#revlist);
3534
3535        git_header_html();
3536        git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
3537
3538        if (!@revlist) {
3539                my %co = parse_commit($hash);
3540
3541                git_print_header_div('summary', $project);
3542                print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
3543        }
3544        for (my $i = ($page * 100); $i <= $#revlist; $i++) {
3545                my $commit = $revlist[$i];
3546                my $ref = format_ref_marker($refs, $commit);
3547                my %co = parse_commit($commit);
3548                next if !%co;
3549                my %ad = parse_date($co{'author_epoch'});
3550                git_print_header_div('commit',
3551                               "<span class=\"age\">$co{'age_string'}</span>" .
3552                               esc_html($co{'title'}) . $ref,
3553                               $commit);
3554                print "<div class=\"title_text\">\n" .
3555                      "<div class=\"log_link\">\n" .
3556                      $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
3557                      " | " .
3558                      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
3559                      " | " .
3560                      $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
3561                      "<br/>\n" .
3562                      "</div>\n" .
3563                      "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
3564                      "</div>\n";
3565
3566                print "<div class=\"log_body\">\n";
3567                git_print_log($co{'comment'}, -final_empty_line=> 1);
3568                print "</div>\n";
3569        }
3570        git_footer_html();
3571}
3572
3573sub git_commit {
3574        $hash ||= $hash_base || "HEAD";
3575        my %co = parse_commit($hash);
3576        if (!%co) {
3577                die_error(undef, "Unknown commit object");
3578        }
3579        my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
3580        my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
3581
3582        my $parent  = $co{'parent'};
3583        my $parents = $co{'parents'}; # listref
3584
3585        # we need to prepare $formats_nav before any parameter munging
3586        my $formats_nav;
3587        if (!defined $parent) {
3588                # --root commitdiff
3589                $formats_nav .= '(initial)';
3590        } elsif (@$parents == 1) {
3591                # single parent commit
3592                $formats_nav .=
3593                        '(parent: ' .
3594                        $cgi->a({-href => href(action=>"commit",
3595                                               hash=>$parent)},
3596                                esc_html(substr($parent, 0, 7))) .
3597                        ')';
3598        } else {
3599                # merge commit
3600                $formats_nav .=
3601                        '(merge: ' .
3602                        join(' ', map {
3603                                $cgi->a({-href => href(action=>"commitdiff",
3604                                                       hash=>$_)},
3605                                        esc_html(substr($_, 0, 7)));
3606                        } @$parents ) .
3607                        ')';
3608        }
3609
3610        if (!defined $parent) {
3611                $parent = "--root";
3612        }
3613        my @difftree;
3614        if (@$parents <= 1) {
3615                # difftree output is not printed for merges
3616                open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
3617                        @diff_opts, $parent, $hash, "--"
3618                                or die_error(undef, "Open git-diff-tree failed");
3619                @difftree = map { chomp; $_ } <$fd>;
3620                close $fd or die_error(undef, "Reading git-diff-tree failed");
3621        }
3622
3623        # non-textual hash id's can be cached
3624        my $expires;
3625        if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3626                $expires = "+1d";
3627        }
3628        my $refs = git_get_references();
3629        my $ref = format_ref_marker($refs, $co{'id'});
3630
3631        my $have_snapshot = gitweb_have_snapshot();
3632
3633        git_header_html(undef, $expires);
3634        git_print_page_nav('commit', '',
3635                           $hash, $co{'tree'}, $hash,
3636                           $formats_nav);
3637
3638        if (defined $co{'parent'}) {
3639                git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
3640        } else {
3641                git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
3642        }
3643        print "<div class=\"title_text\">\n" .
3644              "<table cellspacing=\"0\">\n";
3645        print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
3646              "<tr>" .
3647              "<td></td><td> $ad{'rfc2822'}";
3648        if ($ad{'hour_local'} < 6) {
3649                printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
3650                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
3651        } else {
3652                printf(" (%02d:%02d %s)",
3653                       $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
3654        }
3655        print "</td>" .
3656              "</tr>\n";
3657        print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
3658        print "<tr><td></td><td> $cd{'rfc2822'}" .
3659              sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
3660              "</td></tr>\n";
3661        print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
3662        print "<tr>" .
3663              "<td>tree</td>" .
3664              "<td class=\"sha1\">" .
3665              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
3666                       class => "list"}, $co{'tree'}) .
3667              "</td>" .
3668              "<td class=\"link\">" .
3669              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
3670                      "tree");
3671        if ($have_snapshot) {
3672                print " | " .
3673                      $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
3674        }
3675        print "</td>" .
3676              "</tr>\n";
3677
3678        foreach my $par (@$parents) {
3679                print "<tr>" .
3680                      "<td>parent</td>" .
3681                      "<td class=\"sha1\">" .
3682                      $cgi->a({-href => href(action=>"commit", hash=>$par),
3683                               class => "list"}, $par) .
3684                      "</td>" .
3685                      "<td class=\"link\">" .
3686                      $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
3687                      " | " .
3688                      $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
3689                      "</td>" .
3690                      "</tr>\n";
3691        }
3692        print "</table>".
3693              "</div>\n";
3694
3695        print "<div class=\"page_body\">\n";
3696        git_print_log($co{'comment'});
3697        print "</div>\n";
3698
3699        if (@$parents <= 1) {
3700                # do not output difftree/whatchanged for merges
3701                git_difftree_body(\@difftree, $hash, $parent);
3702        }
3703
3704        git_footer_html();
3705}
3706
3707sub git_object {
3708        # object is defined by:
3709        # - hash or hash_base alone
3710        # - hash_base and file_name
3711        my $type;
3712
3713        # - hash or hash_base alone
3714        if ($hash || ($hash_base && !defined $file_name)) {
3715                my $object_id = $hash || $hash_base;
3716
3717                my $git_command = git_cmd_str();
3718                open my $fd, "-|", "$git_command cat-file -t $object_id 2>/dev/null"
3719                        or die_error('404 Not Found', "Object does not exist");
3720                $type = <$fd>;
3721                chomp $type;
3722                close $fd
3723                        or die_error('404 Not Found', "Object does not exist");
3724
3725        # - hash_base and file_name
3726        } elsif ($hash_base && defined $file_name) {
3727                $file_name =~ s,/+$,,;
3728
3729                system(git_cmd(), "cat-file", '-e', $hash_base) == 0
3730                        or die_error('404 Not Found', "Base object does not exist");
3731
3732                # here errors should not hapen
3733                open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
3734                        or die_error(undef, "Open git-ls-tree failed");
3735                my $line = <$fd>;
3736                close $fd;
3737
3738                #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
3739                unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
3740                        die_error('404 Not Found', "File or directory for given base does not exist");
3741                }
3742                $type = $2;
3743                $hash = $3;
3744        } else {
3745                die_error('404 Not Found', "Not enough information to find object");
3746        }
3747
3748        print $cgi->redirect(-uri => href(action=>$type, -full=>1,
3749                                          hash=>$hash, hash_base=>$hash_base,
3750                                          file_name=>$file_name),
3751                             -status => '302 Found');
3752}
3753
3754sub git_blobdiff {
3755        my $format = shift || 'html';
3756
3757        my $fd;
3758        my @difftree;
3759        my %diffinfo;
3760        my $expires;
3761
3762        # preparing $fd and %diffinfo for git_patchset_body
3763        # new style URI
3764        if (defined $hash_base && defined $hash_parent_base) {
3765                if (defined $file_name) {
3766                        # read raw output
3767                        open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3768                                $hash_parent_base, $hash_base,
3769                                "--", $file_name
3770                                or die_error(undef, "Open git-diff-tree failed");
3771                        @difftree = map { chomp; $_ } <$fd>;
3772                        close $fd
3773                                or die_error(undef, "Reading git-diff-tree failed");
3774                        @difftree
3775                                or die_error('404 Not Found', "Blob diff not found");
3776
3777                } elsif (defined $hash &&
3778                         $hash =~ /[0-9a-fA-F]{40}/) {
3779                        # try to find filename from $hash
3780
3781                        # read filtered raw output
3782                        open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3783                                $hash_parent_base, $hash_base, "--"
3784                                or die_error(undef, "Open git-diff-tree failed");
3785                        @difftree =
3786                                # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
3787                                # $hash == to_id
3788                                grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
3789                                map { chomp; $_ } <$fd>;
3790                        close $fd
3791                                or die_error(undef, "Reading git-diff-tree failed");
3792                        @difftree
3793                                or die_error('404 Not Found', "Blob diff not found");
3794
3795                } else {
3796                        die_error('404 Not Found', "Missing one of the blob diff parameters");
3797                }
3798
3799                if (@difftree > 1) {
3800                        die_error('404 Not Found', "Ambiguous blob diff specification");
3801                }
3802
3803                %diffinfo = parse_difftree_raw_line($difftree[0]);
3804                $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
3805                $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
3806
3807                $hash_parent ||= $diffinfo{'from_id'};
3808                $hash        ||= $diffinfo{'to_id'};
3809
3810                # non-textual hash id's can be cached
3811                if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
3812                    $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
3813                        $expires = '+1d';
3814                }
3815
3816                # open patch output
3817                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3818                        '-p', $hash_parent_base, $hash_base,
3819                        "--", $file_name
3820                        or die_error(undef, "Open git-diff-tree failed");
3821        }
3822
3823        # old/legacy style URI
3824        if (!%diffinfo && # if new style URI failed
3825            defined $hash && defined $hash_parent) {
3826                # fake git-diff-tree raw output
3827                $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
3828                $diffinfo{'from_id'} = $hash_parent;
3829                $diffinfo{'to_id'}   = $hash;
3830                if (defined $file_name) {
3831                        if (defined $file_parent) {
3832                                $diffinfo{'status'} = '2';
3833                                $diffinfo{'from_file'} = $file_parent;
3834                                $diffinfo{'to_file'}   = $file_name;
3835                        } else { # assume not renamed
3836                                $diffinfo{'status'} = '1';
3837                                $diffinfo{'from_file'} = $file_name;
3838                                $diffinfo{'to_file'}   = $file_name;
3839                        }
3840                } else { # no filename given
3841                        $diffinfo{'status'} = '2';
3842                        $diffinfo{'from_file'} = $hash_parent;
3843                        $diffinfo{'to_file'}   = $hash;
3844                }
3845
3846                # non-textual hash id's can be cached
3847                if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
3848                    $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
3849                        $expires = '+1d';
3850                }
3851
3852                # open patch output
3853                open $fd, "-|", git_cmd(), "diff", '-p', @diff_opts,
3854                        $hash_parent, $hash, "--"
3855                        or die_error(undef, "Open git-diff failed");
3856        } else  {
3857                die_error('404 Not Found', "Missing one of the blob diff parameters")
3858                        unless %diffinfo;
3859        }
3860
3861        # header
3862        if ($format eq 'html') {
3863                my $formats_nav =
3864                        $cgi->a({-href => href(action=>"blobdiff_plain",
3865                                               hash=>$hash, hash_parent=>$hash_parent,
3866                                               hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
3867                                               file_name=>$file_name, file_parent=>$file_parent)},
3868                                "raw");
3869                git_header_html(undef, $expires);
3870                if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3871                        git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3872                        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3873                } else {
3874                        print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
3875                        print "<div class=\"title\">$hash vs $hash_parent</div>\n";
3876                }
3877                if (defined $file_name) {
3878                        git_print_page_path($file_name, "blob", $hash_base);
3879                } else {
3880                        print "<div class=\"page_path\"></div>\n";
3881                }
3882
3883        } elsif ($format eq 'plain') {
3884                print $cgi->header(
3885                        -type => 'text/plain',
3886                        -charset => 'utf-8',
3887                        -expires => $expires,
3888                        -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
3889
3890                print "X-Git-Url: " . $cgi->self_url() . "\n\n";
3891
3892        } else {
3893                die_error(undef, "Unknown blobdiff format");
3894        }
3895
3896        # patch
3897        if ($format eq 'html') {
3898                print "<div class=\"page_body\">\n";
3899
3900                git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
3901                close $fd;
3902
3903                print "</div>\n"; # class="page_body"
3904                git_footer_html();
3905
3906        } else {
3907                while (my $line = <$fd>) {
3908                        $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
3909                        $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
3910
3911                        print $line;
3912
3913                        last if $line =~ m!^\+\+\+!;
3914                }
3915                local $/ = undef;
3916                print <$fd>;
3917                close $fd;
3918        }
3919}
3920
3921sub git_blobdiff_plain {
3922        git_blobdiff('plain');
3923}
3924
3925sub git_commitdiff {
3926        my $format = shift || 'html';
3927        $hash ||= $hash_base || "HEAD";
3928        my %co = parse_commit($hash);
3929        if (!%co) {
3930                die_error(undef, "Unknown commit object");
3931        }
3932
3933        # we need to prepare $formats_nav before any parameter munging
3934        my $formats_nav;
3935        if ($format eq 'html') {
3936                $formats_nav =
3937                        $cgi->a({-href => href(action=>"commitdiff_plain",
3938                                               hash=>$hash, hash_parent=>$hash_parent)},
3939                                "raw");
3940
3941                if (defined $hash_parent) {
3942                        # commitdiff with two commits given
3943                        my $hash_parent_short = $hash_parent;
3944                        if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
3945                                $hash_parent_short = substr($hash_parent, 0, 7);
3946                        }
3947                        $formats_nav .=
3948                                ' (from: ' .
3949                                $cgi->a({-href => href(action=>"commitdiff",
3950                                                       hash=>$hash_parent)},
3951                                        esc_html($hash_parent_short)) .
3952                                ')';
3953                } elsif (!$co{'parent'}) {
3954                        # --root commitdiff
3955                        $formats_nav .= ' (initial)';
3956                } elsif (scalar @{$co{'parents'}} == 1) {
3957                        # single parent commit
3958                        $formats_nav .=
3959                                ' (parent: ' .
3960                                $cgi->a({-href => href(action=>"commitdiff",
3961                                                       hash=>$co{'parent'})},
3962                                        esc_html(substr($co{'parent'}, 0, 7))) .
3963                                ')';
3964                } else {
3965                        # merge commit
3966                        $formats_nav .=
3967                                ' (merge: ' .
3968                                join(' ', map {
3969                                        $cgi->a({-href => href(action=>"commitdiff",
3970                                                               hash=>$_)},
3971                                                esc_html(substr($_, 0, 7)));
3972                                } @{$co{'parents'}} ) .
3973                                ')';
3974                }
3975        }
3976
3977        if (!defined $hash_parent) {
3978                $hash_parent = $co{'parent'} || '--root';
3979        }
3980
3981        # read commitdiff
3982        my $fd;
3983        my @difftree;
3984        if ($format eq 'html') {
3985                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3986                        "--no-commit-id", "--patch-with-raw", "--full-index",
3987                        $hash_parent, $hash, "--"
3988                        or die_error(undef, "Open git-diff-tree failed");
3989
3990                while (my $line = <$fd>) {
3991                        chomp $line;
3992                        # empty line ends raw part of diff-tree output
3993                        last unless $line;
3994                        push @difftree, $line;
3995                }
3996
3997        } elsif ($format eq 'plain') {
3998                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3999                        '-p', $hash_parent, $hash, "--"
4000                        or die_error(undef, "Open git-diff-tree failed");
4001
4002        } else {
4003                die_error(undef, "Unknown commitdiff format");
4004        }
4005
4006        # non-textual hash id's can be cached
4007        my $expires;
4008        if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4009                $expires = "+1d";
4010        }
4011
4012        # write commit message
4013        if ($format eq 'html') {
4014                my $refs = git_get_references();
4015                my $ref = format_ref_marker($refs, $co{'id'});
4016
4017                git_header_html(undef, $expires);
4018                git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
4019                git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
4020                git_print_authorship(\%co);
4021                print "<div class=\"page_body\">\n";
4022                if (@{$co{'comment'}} > 1) {
4023                        print "<div class=\"log\">\n";
4024                        git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
4025                        print "</div>\n"; # class="log"
4026                }
4027
4028        } elsif ($format eq 'plain') {
4029                my $refs = git_get_references("tags");
4030                my $tagname = git_get_rev_name_tags($hash);
4031                my $filename = basename($project) . "-$hash.patch";
4032
4033                print $cgi->header(
4034                        -type => 'text/plain',
4035                        -charset => 'utf-8',
4036                        -expires => $expires,
4037                        -content_disposition => 'inline; filename="' . "$filename" . '"');
4038                my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4039                print <<TEXT;
4040From: $co{'author'}
4041Date: $ad{'rfc2822'} ($ad{'tz_local'})
4042Subject: $co{'title'}
4043TEXT
4044                print "X-Git-Tag: $tagname\n" if $tagname;
4045                print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4046
4047                foreach my $line (@{$co{'comment'}}) {
4048                        print "$line\n";
4049                }
4050                print "---\n\n";
4051        }
4052
4053        # write patch
4054        if ($format eq 'html') {
4055                git_difftree_body(\@difftree, $hash, $hash_parent);
4056                print "<br/>\n";
4057
4058                git_patchset_body($fd, \@difftree, $hash, $hash_parent);
4059                close $fd;
4060                print "</div>\n"; # class="page_body"
4061                git_footer_html();
4062
4063        } elsif ($format eq 'plain') {
4064                local $/ = undef;
4065                print <$fd>;
4066                close $fd
4067                        or print "Reading git-diff-tree failed\n";
4068        }
4069}
4070
4071sub git_commitdiff_plain {
4072        git_commitdiff('plain');
4073}
4074
4075sub git_history {
4076        if (!defined $hash_base) {
4077                $hash_base = git_get_head_hash($project);
4078        }
4079        if (!defined $page) {
4080                $page = 0;
4081        }
4082        my $ftype;
4083        my %co = parse_commit($hash_base);
4084        if (!%co) {
4085                die_error(undef, "Unknown commit object");
4086        }
4087
4088        my $refs = git_get_references();
4089        my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
4090
4091        if (!defined $hash && defined $file_name) {
4092                $hash = git_get_hash_by_path($hash_base, $file_name);
4093        }
4094        if (defined $hash) {
4095                $ftype = git_get_type($hash);
4096        }
4097
4098        open my $fd, "-|",
4099                git_cmd(), "rev-list", $limit, "--full-history", $hash_base, "--", $file_name
4100                        or die_error(undef, "Open git-rev-list-failed");
4101        my @revlist = map { chomp; $_ } <$fd>;
4102        close $fd
4103                or die_error(undef, "Reading git-rev-list failed");
4104
4105        my $paging_nav = '';
4106        if ($page > 0) {
4107                $paging_nav .=
4108                        $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4109                                               file_name=>$file_name)},
4110                                "first");
4111                $paging_nav .= " &sdot; " .
4112                        $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4113                                               file_name=>$file_name, page=>$page-1),
4114                                 -accesskey => "p", -title => "Alt-p"}, "prev");
4115        } else {
4116                $paging_nav .= "first";
4117                $paging_nav .= " &sdot; prev";
4118        }
4119        if ($#revlist >= (100 * ($page+1)-1)) {
4120                $paging_nav .= " &sdot; " .
4121                        $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4122                                               file_name=>$file_name, page=>$page+1),
4123                                 -accesskey => "n", -title => "Alt-n"}, "next");
4124        } else {
4125                $paging_nav .= " &sdot; next";
4126        }
4127        my $next_link = '';
4128        if ($#revlist >= (100 * ($page+1)-1)) {
4129                $next_link =
4130                        $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4131                                               file_name=>$file_name, page=>$page+1),
4132                                 -title => "Alt-n"}, "next");
4133        }
4134
4135        git_header_html();
4136        git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
4137        git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4138        git_print_page_path($file_name, $ftype, $hash_base);
4139
4140        git_history_body(\@revlist, ($page * 100), $#revlist,
4141                         $refs, $hash_base, $ftype, $next_link);
4142
4143        git_footer_html();
4144}
4145
4146sub git_search {
4147        if (!defined $searchtext) {
4148                die_error(undef, "Text field empty");
4149        }
4150        if (!defined $hash) {
4151                $hash = git_get_head_hash($project);
4152        }
4153        my %co = parse_commit($hash);
4154        if (!%co) {
4155                die_error(undef, "Unknown commit object");
4156        }
4157
4158        $searchtype ||= 'commit';
4159        if ($searchtype eq 'pickaxe') {
4160                # pickaxe may take all resources of your box and run for several minutes
4161                # with every query - so decide by yourself how public you make this feature
4162                my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4163                if (!$have_pickaxe) {
4164                        die_error('403 Permission denied', "Permission denied");
4165                }
4166        }
4167
4168        git_header_html();
4169        git_print_page_nav('','', $hash,$co{'tree'},$hash);
4170        git_print_header_div('commit', esc_html($co{'title'}), $hash);
4171
4172        print "<table cellspacing=\"0\">\n";
4173        my $alternate = 1;
4174        if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
4175                $/ = "\0";
4176                open my $fd, "-|", git_cmd(), "rev-list",
4177                        "--header", "--parents", $hash, "--"
4178                        or next;
4179                while (my $commit_text = <$fd>) {
4180                        if (!grep m/$searchtext/i, $commit_text) {
4181                                next;
4182                        }
4183                        if ($searchtype eq 'author' && !grep m/\nauthor .*$searchtext/i, $commit_text) {
4184                                next;
4185                        }
4186                        if ($searchtype eq 'committer' && !grep m/\ncommitter .*$searchtext/i, $commit_text) {
4187                                next;
4188                        }
4189                        my @commit_lines = split "\n", $commit_text;
4190                        my %co = parse_commit(undef, \@commit_lines);
4191                        if (!%co) {
4192                                next;
4193                        }
4194                        if ($alternate) {
4195                                print "<tr class=\"dark\">\n";
4196                        } else {
4197                                print "<tr class=\"light\">\n";
4198                        }
4199                        $alternate ^= 1;
4200                        print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
4201                              "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
4202                              "<td>" .
4203                              $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
4204                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
4205                        my $comment = $co{'comment'};
4206                        foreach my $line (@$comment) {
4207                                if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
4208                                        my $lead = esc_html($1) || "";
4209                                        $lead = chop_str($lead, 30, 10);
4210                                        my $match = esc_html($2) || "";
4211                                        my $trail = esc_html($3) || "";
4212                                        $trail = chop_str($trail, 30, 10);
4213                                        my $text = "$lead<span class=\"match\">$match</span>$trail";
4214                                        print chop_str($text, 80, 5) . "<br/>\n";
4215                                }
4216                        }
4217                        print "</td>\n" .
4218                              "<td class=\"link\">" .
4219                              $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
4220                              " | " .
4221                              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
4222                        print "</td>\n" .
4223                              "</tr>\n";
4224                }
4225                close $fd;
4226        }
4227
4228        if ($searchtype eq 'pickaxe') {
4229                $/ = "\n";
4230                my $git_command = git_cmd_str();
4231                open my $fd, "-|", "$git_command rev-list $hash | " .
4232                        "$git_command diff-tree -r --stdin -S\'$searchtext\'";
4233                undef %co;
4234                my @files;
4235                while (my $line = <$fd>) {
4236                        if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
4237                                my %set;
4238                                $set{'file'} = $6;
4239                                $set{'from_id'} = $3;
4240                                $set{'to_id'} = $4;
4241                                $set{'id'} = $set{'to_id'};
4242                                if ($set{'id'} =~ m/0{40}/) {
4243                                        $set{'id'} = $set{'from_id'};
4244                                }
4245                                if ($set{'id'} =~ m/0{40}/) {
4246                                        next;
4247                                }
4248                                push @files, \%set;
4249                        } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
4250                                if (%co) {
4251                                        if ($alternate) {
4252                                                print "<tr class=\"dark\">\n";
4253                                        } else {
4254                                                print "<tr class=\"light\">\n";
4255                                        }
4256                                        $alternate ^= 1;
4257                                        print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
4258                                              "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
4259                                              "<td>" .
4260                                              $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
4261                                                      -class => "list subject"},
4262                                                      esc_html(chop_str($co{'title'}, 50)) . "<br/>");
4263                                        while (my $setref = shift @files) {
4264                                                my %set = %$setref;
4265                                                print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
4266                                                                             hash=>$set{'id'}, file_name=>$set{'file'}),
4267                                                              -class => "list"},
4268                                                              "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
4269                                                      "<br/>\n";
4270                                        }
4271                                        print "</td>\n" .
4272                                              "<td class=\"link\">" .
4273                                              $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
4274                                              " | " .
4275                                              $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
4276                                        print "</td>\n" .
4277                                              "</tr>\n";
4278                                }
4279                                %co = parse_commit($1);
4280                        }
4281                }
4282                close $fd;
4283        }
4284        print "</table>\n";
4285        git_footer_html();
4286}
4287
4288sub git_search_help {
4289        git_header_html();
4290        git_print_page_nav('','', $hash,$hash,$hash);
4291        print <<EOT;
4292<dl>
4293<dt><b>commit</b></dt>
4294<dd>The commit messages and authorship information will be scanned for the given string.</dd>
4295<dt><b>author</b></dt>
4296<dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
4297<dt><b>committer</b></dt>
4298<dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
4299EOT
4300        my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4301        if ($have_pickaxe) {
4302                print <<EOT;
4303<dt><b>pickaxe</b></dt>
4304<dd>All commits that caused the string to appear or disappear from any file (changes that
4305added, removed or "modified" the string) will be listed. This search can take a while and
4306takes a lot of strain on the server, so please use it wisely.</dd>
4307EOT
4308        }
4309        print "</dl>\n";
4310        git_footer_html();
4311}
4312
4313sub git_shortlog {
4314        my $head = git_get_head_hash($project);
4315        if (!defined $hash) {
4316                $hash = $head;
4317        }
4318        if (!defined $page) {
4319                $page = 0;
4320        }
4321        my $refs = git_get_references();
4322
4323        my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
4324        open my $fd, "-|", git_cmd(), "rev-list", $limit, $hash, "--"
4325                or die_error(undef, "Open git-rev-list failed");
4326        my @revlist = map { chomp; $_ } <$fd>;
4327        close $fd;
4328
4329        my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, $#revlist);
4330        my $next_link = '';
4331        if ($#revlist >= (100 * ($page+1)-1)) {
4332                $next_link =
4333                        $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
4334                                 -title => "Alt-n"}, "next");
4335        }
4336
4337
4338        git_header_html();
4339        git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
4340        git_print_header_div('summary', $project);
4341
4342        git_shortlog_body(\@revlist, ($page * 100), $#revlist, $refs, $next_link);
4343
4344        git_footer_html();
4345}
4346
4347## ......................................................................
4348## feeds (RSS, Atom; OPML)
4349
4350sub git_feed {
4351        my $format = shift || 'atom';
4352        my ($have_blame) = gitweb_check_feature('blame');
4353
4354        # Atom: http://www.atomenabled.org/developers/syndication/
4355        # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
4356        if ($format ne 'rss' && $format ne 'atom') {
4357                die_error(undef, "Unknown web feed format");
4358        }
4359
4360        # log/feed of current (HEAD) branch, log of given branch, history of file/directory
4361        my $head = $hash || 'HEAD';
4362        open my $fd, "-|", git_cmd(), "rev-list", "--max-count=150",
4363                $head, "--", (defined $file_name ? $file_name : ())
4364                or die_error(undef, "Open git-rev-list failed");
4365        my @revlist = map { chomp; $_ } <$fd>;
4366        close $fd or die_error(undef, "Reading git-rev-list failed");
4367
4368        my %latest_commit;
4369        my %latest_date;
4370        my $content_type = "application/$format+xml";
4371        if (defined $cgi->http('HTTP_ACCEPT') &&
4372                 $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
4373                # browser (feed reader) prefers text/xml
4374                $content_type = 'text/xml';
4375        }
4376        if (defined($revlist[0])) {
4377                %latest_commit = parse_commit($revlist[0]);
4378                %latest_date   = parse_date($latest_commit{'author_epoch'});
4379                print $cgi->header(
4380                        -type => $content_type,
4381                        -charset => 'utf-8',
4382                        -last_modified => $latest_date{'rfc2822'});
4383        } else {
4384                print $cgi->header(
4385                        -type => $content_type,
4386                        -charset => 'utf-8');
4387        }
4388
4389        # Optimization: skip generating the body if client asks only
4390        # for Last-Modified date.
4391        return if ($cgi->request_method() eq 'HEAD');
4392
4393        # header variables
4394        my $title = "$site_name - $project/$action";
4395        my $feed_type = 'log';
4396        if (defined $hash) {
4397                $title .= " - '$hash'";
4398                $feed_type = 'branch log';
4399                if (defined $file_name) {
4400                        $title .= " :: $file_name";
4401                        $feed_type = 'history';
4402                }
4403        } elsif (defined $file_name) {
4404                $title .= " - $file_name";
4405                $feed_type = 'history';
4406        }
4407        $title .= " $feed_type";
4408        my $descr = git_get_project_description($project);
4409        if (defined $descr) {
4410                $descr = esc_html($descr);
4411        } else {
4412                $descr = "$project " .
4413                         ($format eq 'rss' ? 'RSS' : 'Atom') .
4414                         " feed";
4415        }
4416        my $owner = git_get_project_owner($project);
4417        $owner = esc_html($owner);
4418
4419        #header
4420        my $alt_url;
4421        if (defined $file_name) {
4422                $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
4423        } elsif (defined $hash) {
4424                $alt_url = href(-full=>1, action=>"log", hash=>$hash);
4425        } else {
4426                $alt_url = href(-full=>1, action=>"summary");
4427        }
4428        print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
4429        if ($format eq 'rss') {
4430                print <<XML;
4431<rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
4432<channel>
4433XML
4434                print "<title>$title</title>\n" .
4435                      "<link>$alt_url</link>\n" .
4436                      "<description>$descr</description>\n" .
4437                      "<language>en</language>\n";
4438        } elsif ($format eq 'atom') {
4439                print <<XML;
4440<feed xmlns="http://www.w3.org/2005/Atom">
4441XML
4442                print "<title>$title</title>\n" .
4443                      "<subtitle>$descr</subtitle>\n" .
4444                      '<link rel="alternate" type="text/html" href="' .
4445                      $alt_url . '" />' . "\n" .
4446                      '<link rel="self" type="' . $content_type . '" href="' .
4447                      $cgi->self_url() . '" />' . "\n" .
4448                      "<id>" . href(-full=>1) . "</id>\n" .
4449                      # use project owner for feed author
4450                      "<author><name>$owner</name></author>\n";
4451                if (defined $favicon) {
4452                        print "<icon>" . esc_url($favicon) . "</icon>\n";
4453                }
4454                if (defined $logo_url) {
4455                        # not twice as wide as tall: 72 x 27 pixels
4456                        print "<logo>" . esc_url($logo) . "</logo>\n";
4457                }
4458                if (! %latest_date) {
4459                        # dummy date to keep the feed valid until commits trickle in:
4460                        print "<updated>1970-01-01T00:00:00Z</updated>\n";
4461                } else {
4462                        print "<updated>$latest_date{'iso-8601'}</updated>\n";
4463                }
4464        }
4465
4466        # contents
4467        for (my $i = 0; $i <= $#revlist; $i++) {
4468                my $commit = $revlist[$i];
4469                my %co = parse_commit($commit);
4470                # we read 150, we always show 30 and the ones more recent than 48 hours
4471                if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
4472                        last;
4473                }
4474                my %cd = parse_date($co{'author_epoch'});
4475
4476                # get list of changed files
4477                open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4478                        $co{'parent'}, $co{'id'}, "--", (defined $file_name ? $file_name : ())
4479                        or next;
4480                my @difftree = map { chomp; $_ } <$fd>;
4481                close $fd
4482                        or next;
4483
4484                # print element (entry, item)
4485                my $co_url = href(-full=>1, action=>"commit", hash=>$commit);
4486                if ($format eq 'rss') {
4487                        print "<item>\n" .
4488                              "<title>" . esc_html($co{'title'}) . "</title>\n" .
4489                              "<author>" . esc_html($co{'author'}) . "</author>\n" .
4490                              "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
4491                              "<guid isPermaLink=\"true\">$co_url</guid>\n" .
4492                              "<link>$co_url</link>\n" .
4493                              "<description>" . esc_html($co{'title'}) . "</description>\n" .
4494                              "<content:encoded>" .
4495                              "<![CDATA[\n";
4496                } elsif ($format eq 'atom') {
4497                        print "<entry>\n" .
4498                              "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
4499                              "<updated>$cd{'iso-8601'}</updated>\n" .
4500                              "<author>\n" .
4501                              "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
4502                        if ($co{'author_email'}) {
4503                                print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
4504                        }
4505                        print "</author>\n" .
4506                              # use committer for contributor
4507                              "<contributor>\n" .
4508                              "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
4509                        if ($co{'committer_email'}) {
4510                                print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
4511                        }
4512                        print "</contributor>\n" .
4513                              "<published>$cd{'iso-8601'}</published>\n" .
4514                              "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
4515                              "<id>$co_url</id>\n" .
4516                              "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
4517                              "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
4518                }
4519                my $comment = $co{'comment'};
4520                print "<pre>\n";
4521                foreach my $line (@$comment) {
4522                        $line = esc_html($line);
4523                        print "$line\n";
4524                }
4525                print "</pre><ul>\n";
4526                foreach my $difftree_line (@difftree) {
4527                        my %difftree = parse_difftree_raw_line($difftree_line);
4528                        next if !$difftree{'from_id'};
4529
4530                        my $file = $difftree{'file'} || $difftree{'to_file'};
4531
4532                        print "<li>" .
4533                              "[" .
4534                              $cgi->a({-href => href(-full=>1, action=>"blobdiff",
4535                                                     hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
4536                                                     hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
4537                                                     file_name=>$file, file_parent=>$difftree{'from_file'}),
4538                                      -title => "diff"}, 'D');
4539                        if ($have_blame) {
4540                                print $cgi->a({-href => href(-full=>1, action=>"blame",
4541                                                             file_name=>$file, hash_base=>$commit),
4542                                              -title => "blame"}, 'B');
4543                        }
4544                        # if this is not a feed of a file history
4545                        if (!defined $file_name || $file_name ne $file) {
4546                                print $cgi->a({-href => href(-full=>1, action=>"history",
4547                                                             file_name=>$file, hash=>$commit),
4548                                              -title => "history"}, 'H');
4549                        }
4550                        $file = esc_path($file);
4551                        print "] ".
4552                              "$file</li>\n";
4553                }
4554                if ($format eq 'rss') {
4555                        print "</ul>]]>\n" .
4556                              "</content:encoded>\n" .
4557                              "</item>\n";
4558                } elsif ($format eq 'atom') {
4559                        print "</ul>\n</div>\n" .
4560                              "</content>\n" .
4561                              "</entry>\n";
4562                }
4563        }
4564
4565        # end of feed
4566        if ($format eq 'rss') {
4567                print "</channel>\n</rss>\n";
4568        }       elsif ($format eq 'atom') {
4569                print "</feed>\n";
4570        }
4571}
4572
4573sub git_rss {
4574        git_feed('rss');
4575}
4576
4577sub git_atom {
4578        git_feed('atom');
4579}
4580
4581sub git_opml {
4582        my @list = git_get_projects_list();
4583
4584        print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
4585        print <<XML;
4586<?xml version="1.0" encoding="utf-8"?>
4587<opml version="1.0">
4588<head>
4589  <title>$site_name OPML Export</title>
4590</head>
4591<body>
4592<outline text="git RSS feeds">
4593XML
4594
4595        foreach my $pr (@list) {
4596                my %proj = %$pr;
4597                my $head = git_get_head_hash($proj{'path'});
4598                if (!defined $head) {
4599                        next;
4600                }
4601                $git_dir = "$projectroot/$proj{'path'}";
4602                my %co = parse_commit($head);
4603                if (!%co) {
4604                        next;
4605                }
4606
4607                my $path = esc_html(chop_str($proj{'path'}, 25, 5));
4608                my $rss  = "$my_url?p=$proj{'path'};a=rss";
4609                my $html = "$my_url?p=$proj{'path'};a=summary";
4610                print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
4611        }
4612        print <<XML;
4613</outline>
4614</body>
4615</opml>
4616XML
4617}