gitweb/gitweb.perl

   1 #!/usr/bin/perl
   2
   3 # gitweb - simple web interface to track changes in git repositories
   4 #
   5 # (C) 2005-2006, Kay Sievers <kay.sievers@vrfy.org>
   6 # (C) 2005, Christian Gierke
   7 #
   8 # This program is licensed under the GPLv2
   9
  10 use strict;
  11 use warnings;
  12 use CGI qw(:standard :escapeHTML -nosticky);
  13 use CGI::Util qw(unescape);
  14 use CGI::Carp qw(fatalsToBrowser);
  15 use Encode;
  16 use Fcntl ':mode';
  17 use File::Find qw();
  18 binmode STDOUT, ':utf8';
  19
  20 our $cgi = new CGI;
  21 our $version = "++GIT_VERSION++";
  22 our $my_url = $cgi->url();
  23 our $my_uri = $cgi->url(-absolute => 1);
  24
  25 # core git executable to use
  26 # this can just be "git" if your webserver has a sensible PATH
  27 our $GIT = "++GIT_BINDIR++/git";
  28
  29 # absolute fs-path which will be prepended to the project path
  30 #our $projectroot = "/pub/scm";
  31 our $projectroot = "++GITWEB_PROJECTROOT++";
  32
  33 # location for temporary files needed for diffs
  34 our $git_temp = "/tmp/gitweb";
  35
  36 # target of the home link on top of all pages
  37 our $home_link = $my_uri;
  38
  39 # name of your site or organization to appear in page titles
  40 # replace this with something more descriptive for clearer bookmarks
  41 our $site_name = "++GITWEB_SITENAME++" || $ENV{'SERVER_NAME'} || "Untitled";
  42
  43 # html text to include at home page
  44 our $home_text = "++GITWEB_HOMETEXT++";
  45
  46 # URI of default stylesheet
  47 our $stylesheet = "++GITWEB_CSS++";
  48 # URI of GIT logo
  49 our $logo = "++GITWEB_LOGO++";
  50
  51 # source of projects list
  52 our $projects_list = "++GITWEB_LIST++";
  53
  54 # default blob_plain mimetype and default charset for text/plain blob
  55 our $default_blob_plain_mimetype = 'text/plain';
  56 our $default_text_plain_charset  = undef;
  57
  58 # file to use for guessing MIME types before trying /etc/mime.types
  59 # (relative to the current git repository)
  60 our $mimetypes_file = undef;
  61
  62 our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
  63 require $GITWEB_CONFIG if -e $GITWEB_CONFIG;
  64
  65 # version of the core git binary
  66 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
  67
  68 $projects_list ||= $projectroot;
  69 if (! -d $git_temp) {
  70         mkdir($git_temp, 0700) || die_error(undef, "Couldn't mkdir $git_temp");
  71 }
  72
  73 # ======================================================================
  74 # input validation and dispatch
  75 our $action = $cgi->param('a');
  76 if (defined $action) {
  77         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
  78                 die_error(undef, "Invalid action parameter");
  79         }
  80         # action which does not check rest of parameters
  81         if ($action eq "opml") {
  82                 git_opml();
  83                 exit;
  84         }
  85 }
  86
  87 our $project = ($cgi->param('p') || $ENV{'PATH_INFO'});
  88 if (defined $project) {
  89         $project =~ s|^/||;
  90         $project =~ s|/$||;
  91 }
  92 if (defined $project && $project) {
  93         if (!validate_input($project)) {
  94                 die_error(undef, "Invalid project parameter");
  95         }
  96         if (!(-d "$projectroot/$project")) {
  97                 die_error(undef, "No such directory");
  98         }
  99         if (!(-e "$projectroot/$project/HEAD")) {
 100                 die_error(undef, "No such project");
 101         }
 102         $ENV{'GIT_DIR'} = "$projectroot/$project";
 103 } else {
 104         git_project_list();
 105         exit;
 106 }
 107
 108 our $file_name = $cgi->param('f');
 109 if (defined $file_name) {
 110         if (!validate_input($file_name)) {
 111                 die_error(undef, "Invalid file parameter");
 112         }
 113 }
 114
 115 our $hash = $cgi->param('h');
 116 if (defined $hash) {
 117         if (!validate_input($hash)) {
 118                 die_error(undef, "Invalid hash parameter");
 119         }
 120 }
 121
 122 our $hash_parent = $cgi->param('hp');
 123 if (defined $hash_parent) {
 124         if (!validate_input($hash_parent)) {
 125                 die_error(undef, "Invalid hash parent parameter");
 126         }
 127 }
 128
 129 our $hash_base = $cgi->param('hb');
 130 if (defined $hash_base) {
 131         if (!validate_input($hash_base)) {
 132                 die_error(undef, "Invalid hash base parameter");
 133         }
 134 }
 135
 136 our $page = $cgi->param('pg');
 137 if (defined $page) {
 138         if ($page =~ m/[^0-9]$/) {
 139                 die_error(undef, "Invalid page parameter");
 140         }
 141 }
 142
 143 our $searchtext = $cgi->param('s');
 144 if (defined $searchtext) {
 145         if ($searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 146                 die_error(undef, "Invalid search parameter");
 147         }
 148         $searchtext = quotemeta $searchtext;
 149 }
 150
 151 # dispatch
 152 my %actions = (
 153         "blame" => \&git_blame2,
 154         "blobdiff" => \&git_blobdiff,
 155         "blobdiff_plain" => \&git_blobdiff_plain,
 156         "blob" => \&git_blob,
 157         "blob_plain" => \&git_blob_plain,
 158         "commitdiff" => \&git_commitdiff,
 159         "commitdiff_plain" => \&git_commitdiff_plain,
 160         "commit" => \&git_commit,
 161         "heads" => \&git_heads,
 162         "history" => \&git_history,
 163         "log" => \&git_log,
 164         "rss" => \&git_rss,
 165         "search" => \&git_search,
 166         "shortlog" => \&git_shortlog,
 167         "summary" => \&git_summary,
 168         "tag" => \&git_tag,
 169         "tags" => \&git_tags,
 170         "tree" => \&git_tree,
 171 );
 172
 173 $action = 'summary' if (!defined($action));
 174 if (!defined($actions{$action})) {
 175         die_error(undef, "Unknown action");
 176 }
 177 $actions{$action}->();
 178 exit;
 179
 180 ## ======================================================================
 181 ## validation, quoting/unquoting and escaping
 182
 183 sub validate_input {
 184         my $input = shift;
 185
 186         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 187                 return $input;
 188         }
 189         if ($input =~ m/(^|\/)(|\.|\.\.)($|\/)/) {
 190                 return undef;
 191         }
 192         if ($input =~ m/[^a-zA-Z0-9_\x80-\xff\ \t\.\/\-\+\#\~\%]/) {
 193                 return undef;
 194         }
 195         return $input;
 196 }
 197
 198 # quote unsafe chars, but keep the slash, even when it's not
 199 # correct, but quoted slashes look too horrible in bookmarks
 200 sub esc_param {
 201         my $str = shift;
 202         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 203         $str =~ s/\+/%2B/g;
 204         $str =~ s/ /\+/g;
 205         return $str;
 206 }
 207
 208 # replace invalid utf8 character with SUBSTITUTION sequence
 209 sub esc_html {
 210         my $str = shift;
 211         $str = decode("utf8", $str, Encode::FB_DEFAULT);
 212         $str = escapeHTML($str);
 213         $str =~ s/\014/^L/g; # escape FORM FEED (FF) character (e.g. in COPYING file)
 214         return $str;
 215 }
 216
 217 # git may return quoted and escaped filenames
 218 sub unquote {
 219         my $str = shift;
 220         if ($str =~ m/^"(.*)"$/) {
 221                 $str = $1;
 222                 $str =~ s/\\([0-7]{1,3})/chr(oct($1))/eg;
 223         }
 224         return $str;
 225 }
 226
 227 # escape tabs (convert tabs to spaces)
 228 sub untabify {
 229         my $line = shift;
 230
 231         while ((my $pos = index($line, "\t")) != -1) {
 232                 if (my $count = (8 - ($pos % 8))) {
 233                         my $spaces = ' ' x $count;
 234                         $line =~ s/\t/$spaces/;
 235                 }
 236         }
 237
 238         return $line;
 239 }
 240
 241 ## ----------------------------------------------------------------------
 242 ## HTML aware string manipulation
 243
 244 sub chop_str {
 245         my $str = shift;
 246         my $len = shift;
 247         my $add_len = shift || 10;
 248
 249         # allow only $len chars, but don't cut a word if it would fit in $add_len
 250         # if it doesn't fit, cut it if it's still longer than the dots we would add
 251         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 252         my $body = $1;
 253         my $tail = $2;
 254         if (length($tail) > 4) {
 255                 $tail = " ...";
 256                 $body =~ s/&[^;]*$//; # remove chopped character entities
 257         }
 258         return "$body$tail";
 259 }
 260
 261 ## ----------------------------------------------------------------------
 262 ## functions returning short strings
 263
 264 # CSS class for given age value (in seconds)
 265 sub age_class {
 266         my $age = shift;
 267
 268         if ($age < 60*60*2) {
 269                 return "age0";
 270         } elsif ($age < 60*60*24*2) {
 271                 return "age1";
 272         } else {
 273                 return "age2";
 274         }
 275 }
 276
 277 # convert age in seconds to "nn units ago" string
 278 sub age_string {
 279         my $age = shift;
 280         my $age_str;
 281
 282         if ($age > 60*60*24*365*2) {
 283                 $age_str = (int $age/60/60/24/365);
 284                 $age_str .= " years ago";
 285         } elsif ($age > 60*60*24*(365/12)*2) {
 286                 $age_str = int $age/60/60/24/(365/12);
 287                 $age_str .= " months ago";
 288         } elsif ($age > 60*60*24*7*2) {
 289                 $age_str = int $age/60/60/24/7;
 290                 $age_str .= " weeks ago";
 291         } elsif ($age > 60*60*24*2) {
 292                 $age_str = int $age/60/60/24;
 293                 $age_str .= " days ago";
 294         } elsif ($age > 60*60*2) {
 295                 $age_str = int $age/60/60;
 296                 $age_str .= " hours ago";
 297         } elsif ($age > 60*2) {
 298                 $age_str = int $age/60;
 299                 $age_str .= " min ago";
 300         } elsif ($age > 2) {
 301                 $age_str = int $age;
 302                 $age_str .= " sec ago";
 303         } else {
 304                 $age_str .= " right now";
 305         }
 306         return $age_str;
 307 }
 308
 309 # convert file mode in octal to symbolic file mode string
 310 sub mode_str {
 311         my $mode = oct shift;
 312
 313         if (S_ISDIR($mode & S_IFMT)) {
 314                 return 'drwxr-xr-x';
 315         } elsif (S_ISLNK($mode)) {
 316                 return 'lrwxrwxrwx';
 317         } elsif (S_ISREG($mode)) {
 318                 # git cares only about the executable bit
 319                 if ($mode & S_IXUSR) {
 320                         return '-rwxr-xr-x';
 321                 } else {
 322                         return '-rw-r--r--';
 323                 };
 324         } else {
 325                 return '----------';
 326         }
 327 }
 328
 329 # convert file mode in octal to file type string
 330 sub file_type {
 331         my $mode = oct shift;
 332
 333         if (S_ISDIR($mode & S_IFMT)) {
 334                 return "directory";
 335         } elsif (S_ISLNK($mode)) {
 336                 return "symlink";
 337         } elsif (S_ISREG($mode)) {
 338                 return "file";
 339         } else {
 340                 return "unknown";
 341         }
 342 }
 343
 344 ## ----------------------------------------------------------------------
 345 ## functions returning short HTML fragments, or transforming HTML fragments
 346 ## which don't beling to other sections
 347
 348 # format line of commit message or tag comment
 349 sub format_log_line_html {
 350         my $line = shift;
 351
 352         $line = esc_html($line);
 353         $line =~ s/ /&nbsp;/g;
 354         if ($line =~ m/([0-9a-fA-F]{40})/) {
 355                 my $hash_text = $1;
 356                 if (git_get_type($hash_text) eq "commit") {
 357                         my $link = $cgi->a({-class => "text", -href => "$my_uri?" . esc_param("p=$project;a=commit;h=$hash_text")}, $hash_text);
 358                         $line =~ s/$hash_text/$link/;
 359                 }
 360         }
 361         return $line;
 362 }
 363
 364 # format marker of refs pointing to given object
 365 sub format_ref_marker {
 366         my ($refs, $id) = @_;
 367         my $markers = '';
 368
 369         if (defined $refs->{$id}) {
 370                 foreach my $ref (@{$refs->{$id}}) {
 371                         my ($type, $name) = qw();
 372                         # e.g. tags/v2.6.11 or heads/next
 373                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
 374                                 $type = $1;
 375                                 $name = $2;
 376                         } else {
 377                                 $type = "ref";
 378                                 $name = $ref;
 379                         }
 380
 381                         $markers .= " <span class=\"$type\">" . esc_html($name) . "</span>";
 382                 }
 383         }
 384
 385         if ($markers) {
 386                 return ' <span class="refs">'. $markers . '</span>';
 387         } else {
 388                 return "";
 389         }
 390 }
 391
 392 # format, perhaps shortened and with markers, title line
 393 sub format_subject_html {
 394         my ($long, $short, $query, $extra) = @_;
 395         $extra = '' unless defined($extra);
 396
 397         if (length($short) < length($long)) {
 398                 return $cgi->a({-href => "$my_uri?" . esc_param($query),
 399                                -class => "list", -title => $long},
 400                        esc_html($short) . $extra);
 401         } else {
 402                 return $cgi->a({-href => "$my_uri?" . esc_param($query),
 403                                -class => "list"},
 404                        esc_html($long)  . $extra);
 405         }
 406 }
 407
 408 ## ----------------------------------------------------------------------
 409 ## git utility subroutines, invoking git commands
 410
 411 # get HEAD ref of given project as hash
 412 sub git_get_head_hash {
 413         my $project = shift;
 414         my $oENV = $ENV{'GIT_DIR'};
 415         my $retval = undef;
 416         $ENV{'GIT_DIR'} = "$projectroot/$project";
 417         if (open my $fd, "-|", $GIT, "rev-parse", "--verify", "HEAD") {
 418                 my $head = <$fd>;
 419                 close $fd;
 420                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
 421                         $retval = $1;
 422                 }
 423         }
 424         if (defined $oENV) {
 425                 $ENV{'GIT_DIR'} = $oENV;
 426         }
 427         return $retval;
 428 }
 429
 430 # get type of given object
 431 sub git_get_type {
 432         my $hash = shift;
 433
 434         open my $fd, "-|", $GIT, "cat-file", '-t', $hash or return;
 435         my $type = <$fd>;
 436         close $fd or return;
 437         chomp $type;
 438         return $type;
 439 }
 440
 441 sub git_get_project_config {
 442         my $key = shift;
 443
 444         return unless ($key);
 445         $key =~ s/^gitweb\.//;
 446         return if ($key =~ m/\W/);
 447
 448         my $val = qx($GIT repo-config --get gitweb.$key);
 449         return ($val);
 450 }
 451
 452 sub git_get_project_config_bool {
 453         my $val = git_get_project_config (@_);
 454         if ($val and $val =~ m/true|yes|on/) {
 455                 return (1);
 456         }
 457         return; # implicit false
 458 }
 459
 460 # get hash of given path at given ref
 461 sub git_get_hash_by_path {
 462         my $base = shift;
 463         my $path = shift || return undef;
 464
 465         my $tree = $base;
 466
 467         open my $fd, "-|", $GIT, "ls-tree", $base, "--", $path
 468                 or die_error(undef, "Open git-ls-tree failed");
 469         my $line = <$fd>;
 470         close $fd or return undef;
 471
 472         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
 473         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/;
 474         return $3;
 475 }
 476
 477 ## ......................................................................
 478 ## git utility functions, directly accessing git repository
 479
 480 # assumes that PATH is not symref
 481 sub git_get_hash_by_ref {
 482         my $path = shift;
 483
 484         open my $fd, "$projectroot/$path" or return undef;
 485         my $head = <$fd>;
 486         close $fd;
 487         chomp $head;
 488         if ($head =~ m/^[0-9a-fA-F]{40}$/) {
 489                 return $head;
 490         }
 491 }
 492
 493 sub git_get_project_description {
 494         my $path = shift;
 495
 496         open my $fd, "$projectroot/$path/description" or return undef;
 497         my $descr = <$fd>;
 498         close $fd;
 499         chomp $descr;
 500         return $descr;
 501 }
 502
 503 sub git_get_projects_list {
 504         my @list;
 505
 506         if (-d $projects_list) {
 507                 # search in directory
 508                 my $dir = $projects_list;
 509                 opendir my ($dh), $dir or return undef;
 510                 while (my $dir = readdir($dh)) {
 511                         if (-e "$projectroot/$dir/HEAD") {
 512                                 my $pr = {
 513                                         path => $dir,
 514                                 };
 515                                 push @list, $pr
 516                         }
 517                 }
 518                 closedir($dh);
 519         } elsif (-f $projects_list) {
 520                 # read from file(url-encoded):
 521                 # 'git%2Fgit.git Linus+Torvalds'
 522                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
 523                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
 524                 open my ($fd), $projects_list or return undef;
 525                 while (my $line = <$fd>) {
 526                         chomp $line;
 527                         my ($path, $owner) = split ' ', $line;
 528                         $path = unescape($path);
 529                         $owner = unescape($owner);
 530                         if (!defined $path) {
 531                                 next;
 532                         }
 533                         if (-e "$projectroot/$path/HEAD") {
 534                                 my $pr = {
 535                                         path => $path,
 536                                         owner => decode("utf8", $owner, Encode::FB_DEFAULT),
 537                                 };
 538                                 push @list, $pr
 539                         }
 540                 }
 541                 close $fd;
 542         }
 543         @list = sort {$a->{'path'} cmp $b->{'path'}} @list;
 544         return @list;
 545 }
 546
 547 sub git_get_project_owner {
 548         my $project = shift;
 549         my $owner;
 550
 551         return undef unless $project;
 552
 553         # read from file (url-encoded):
 554         # 'git%2Fgit.git Linus+Torvalds'
 555         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
 556         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
 557         if (-f $projects_list) {
 558                 open (my $fd , $projects_list);
 559                 while (my $line = <$fd>) {
 560                         chomp $line;
 561                         my ($pr, $ow) = split ' ', $line;
 562                         $pr = unescape($pr);
 563                         $ow = unescape($ow);
 564                         if ($pr eq $project) {
 565                                 $owner = decode("utf8", $ow, Encode::FB_DEFAULT);
 566                                 last;
 567                         }
 568                 }
 569                 close $fd;
 570         }
 571         if (!defined $owner) {
 572                 $owner = get_file_owner("$projectroot/$project");
 573         }
 574
 575         return $owner;
 576 }
 577
 578 sub git_get_references {
 579         my $type = shift || "";
 580         my %refs;
 581         my $fd;
 582         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c      refs/tags/v2.6.11
 583         # c39ae07f393806ccf406ef966e9a15afc43cc36a      refs/tags/v2.6.11^{}
 584         if (-f "$projectroot/$project/info/refs") {
 585                 open $fd, "$projectroot/$project/info/refs"
 586                         or return;
 587         } else {
 588                 open $fd, "-|", $GIT, "ls-remote", "."
 589                         or return;
 590         }
 591
 592         while (my $line = <$fd>) {
 593                 chomp $line;
 594                 if ($line =~ m/^([0-9a-fA-F]{40})\trefs\/($type\/?[^\^]+)/) {
 595                         if (defined $refs{$1}) {
 596                                 push @{$refs{$1}}, $2;
 597                         } else {
 598                                 $refs{$1} = [ $2 ];
 599                         }
 600                 }
 601         }
 602         close $fd or return;
 603         return \%refs;
 604 }
 605
 606 ## ----------------------------------------------------------------------
 607 ## parse to hash functions
 608
 609 sub parse_date {
 610         my $epoch = shift;
 611         my $tz = shift || "-0000";
 612
 613         my %date;
 614         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
 615         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
 616         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
 617         $date{'hour'} = $hour;
 618         $date{'minute'} = $min;
 619         $date{'mday'} = $mday;
 620         $date{'day'} = $days[$wday];
 621         $date{'month'} = $months[$mon];
 622         $date{'rfc2822'} = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000", $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
 623         $date{'mday-time'} = sprintf "%d %s %02d:%02d", $mday, $months[$mon], $hour ,$min;
 624
 625         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
 626         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
 627         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
 628         $date{'hour_local'} = $hour;
 629         $date{'minute_local'} = $min;
 630         $date{'tz_local'} = $tz;
 631         return %date;
 632 }
 633
 634 sub parse_tag {
 635         my $tag_id = shift;
 636         my %tag;
 637         my @comment;
 638
 639         open my $fd, "-|", $GIT, "cat-file", "tag", $tag_id or return;
 640         $tag{'id'} = $tag_id;
 641         while (my $line = <$fd>) {
 642                 chomp $line;
 643                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
 644                         $tag{'object'} = $1;
 645                 } elsif ($line =~ m/^type (.+)$/) {
 646                         $tag{'type'} = $1;
 647                 } elsif ($line =~ m/^tag (.+)$/) {
 648                         $tag{'name'} = $1;
 649                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
 650                         $tag{'author'} = $1;
 651                         $tag{'epoch'} = $2;
 652                         $tag{'tz'} = $3;
 653                 } elsif ($line =~ m/--BEGIN/) {
 654                         push @comment, $line;
 655                         last;
 656                 } elsif ($line eq "") {
 657                         last;
 658                 }
 659         }
 660         push @comment, <$fd>;
 661         $tag{'comment'} = \@comment;
 662         close $fd or return;
 663         if (!defined $tag{'name'}) {
 664                 return
 665         };
 666         return %tag
 667 }
 668
 669 sub parse_commit {
 670         my $commit_id = shift;
 671         my $commit_text = shift;
 672
 673         my @commit_lines;
 674         my %co;
 675
 676         if (defined $commit_text) {
 677                 @commit_lines = @$commit_text;
 678         } else {
 679                 $/ = "\0";
 680                 open my $fd, "-|", $GIT, "rev-list", "--header", "--parents", "--max-count=1", $commit_id or return;
 681                 @commit_lines = split '\n', <$fd>;
 682                 close $fd or return;
 683                 $/ = "\n";
 684                 pop @commit_lines;
 685         }
 686         my $header = shift @commit_lines;
 687         if (!($header =~ m/^[0-9a-fA-F]{40}/)) {
 688                 return;
 689         }
 690         ($co{'id'}, my @parents) = split ' ', $header;
 691         $co{'parents'} = \@parents;
 692         $co{'parent'} = $parents[0];
 693         while (my $line = shift @commit_lines) {
 694                 last if $line eq "\n";
 695                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
 696                         $co{'tree'} = $1;
 697                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
 698                         $co{'author'} = $1;
 699                         $co{'author_epoch'} = $2;
 700                         $co{'author_tz'} = $3;
 701                         if ($co{'author'} =~ m/^([^<]+) </) {
 702                                 $co{'author_name'} = $1;
 703                         } else {
 704                                 $co{'author_name'} = $co{'author'};
 705                         }
 706                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
 707                         $co{'committer'} = $1;
 708                         $co{'committer_epoch'} = $2;
 709                         $co{'committer_tz'} = $3;
 710                         $co{'committer_name'} = $co{'committer'};
 711                         $co{'committer_name'} =~ s/ <.*//;
 712                 }
 713         }
 714         if (!defined $co{'tree'}) {
 715                 return;
 716         };
 717
 718         foreach my $title (@commit_lines) {
 719                 $title =~ s/^    //;
 720                 if ($title ne "") {
 721                         $co{'title'} = chop_str($title, 80, 5);
 722                         # remove leading stuff of merges to make the interesting part visible
 723                         if (length($title) > 50) {
 724                                 $title =~ s/^Automatic //;
 725                                 $title =~ s/^merge (of|with) /Merge ... /i;
 726                                 if (length($title) > 50) {
 727                                         $title =~ s/(http|rsync):\/\///;
 728                                 }
 729                                 if (length($title) > 50) {
 730                                         $title =~ s/(master|www|rsync)\.//;
 731                                 }
 732                                 if (length($title) > 50) {
 733                                         $title =~ s/kernel.org:?//;
 734                                 }
 735                                 if (length($title) > 50) {
 736                                         $title =~ s/\/pub\/scm//;
 737                                 }
 738                         }
 739                         $co{'title_short'} = chop_str($title, 50, 5);
 740                         last;
 741                 }
 742         }
 743         # remove added spaces
 744         foreach my $line (@commit_lines) {
 745                 $line =~ s/^    //;
 746         }
 747         $co{'comment'} = \@commit_lines;
 748
 749         my $age = time - $co{'committer_epoch'};
 750         $co{'age'} = $age;
 751         $co{'age_string'} = age_string($age);
 752         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
 753         if ($age > 60*60*24*7*2) {
 754                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
 755                 $co{'age_string_age'} = $co{'age_string'};
 756         } else {
 757                 $co{'age_string_date'} = $co{'age_string'};
 758                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
 759         }
 760         return %co;
 761 }
 762
 763 # parse ref from ref_file, given by ref_id, with given type
 764 sub parse_ref {
 765         my $ref_file = shift;
 766         my $ref_id = shift;
 767         my $type = shift || git_get_type($ref_id);
 768         my %ref_item;
 769
 770         $ref_item{'type'} = $type;
 771         $ref_item{'id'} = $ref_id;
 772         $ref_item{'epoch'} = 0;
 773         $ref_item{'age'} = "unknown";
 774         if ($type eq "tag") {
 775                 my %tag = parse_tag($ref_id);
 776                 $ref_item{'comment'} = $tag{'comment'};
 777                 if ($tag{'type'} eq "commit") {
 778                         my %co = parse_commit($tag{'object'});
 779                         $ref_item{'epoch'} = $co{'committer_epoch'};
 780                         $ref_item{'age'} = $co{'age_string'};
 781                 } elsif (defined($tag{'epoch'})) {
 782                         my $age = time - $tag{'epoch'};
 783                         $ref_item{'epoch'} = $tag{'epoch'};
 784                         $ref_item{'age'} = age_string($age);
 785                 }
 786                 $ref_item{'reftype'} = $tag{'type'};
 787                 $ref_item{'name'} = $tag{'name'};
 788                 $ref_item{'refid'} = $tag{'object'};
 789         } elsif ($type eq "commit"){
 790                 my %co = parse_commit($ref_id);
 791                 $ref_item{'reftype'} = "commit";
 792                 $ref_item{'name'} = $ref_file;
 793                 $ref_item{'title'} = $co{'title'};
 794                 $ref_item{'refid'} = $ref_id;
 795                 $ref_item{'epoch'} = $co{'committer_epoch'};
 796                 $ref_item{'age'} = $co{'age_string'};
 797         } else {
 798                 $ref_item{'reftype'} = $type;
 799                 $ref_item{'name'} = $ref_file;
 800                 $ref_item{'refid'} = $ref_id;
 801         }
 802
 803         return %ref_item;
 804 }
 805
 806 ## ......................................................................
 807 ## parse to array of hashes functions
 808
 809 sub git_get_refs_list {
 810         my $ref_dir = shift;
 811         my @reflist;
 812
 813         my @refs;
 814         my $pfxlen = length("$projectroot/$project/$ref_dir");
 815         File::Find::find(sub {
 816                 return if (/^\./);
 817                 if (-f $_) {
 818                         push @refs, substr($File::Find::name, $pfxlen + 1);
 819                 }
 820         }, "$projectroot/$project/$ref_dir");
 821
 822         foreach my $ref_file (@refs) {
 823                 my $ref_id = git_get_hash_by_ref("$project/$ref_dir/$ref_file");
 824                 my $type = git_get_type($ref_id) || next;
 825                 my %ref_item = parse_ref($ref_file, $ref_id, $type);
 826
 827                 push @reflist, \%ref_item;
 828         }
 829         # sort refs by age
 830         @reflist = sort {$b->{'epoch'} <=> $a->{'epoch'}} @reflist;
 831         return \@reflist;
 832 }
 833
 834 ## ----------------------------------------------------------------------
 835 ## filesystem-related functions
 836
 837 sub get_file_owner {
 838         my $path = shift;
 839
 840         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
 841         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
 842         if (!defined $gcos) {
 843                 return undef;
 844         }
 845         my $owner = $gcos;
 846         $owner =~ s/[,;].*$//;
 847         return decode("utf8", $owner, Encode::FB_DEFAULT);
 848 }
 849
 850 ## ......................................................................
 851 ## mimetype related functions
 852
 853 sub mimetype_guess_file {
 854         my $filename = shift;
 855         my $mimemap = shift;
 856         -r $mimemap or return undef;
 857
 858         my %mimemap;
 859         open(MIME, $mimemap) or return undef;
 860         while (<MIME>) {
 861                 next if m/^#/; # skip comments
 862                 my ($mime, $exts) = split(/\t+/);
 863                 if (defined $exts) {
 864                         my @exts = split(/\s+/, $exts);
 865                         foreach my $ext (@exts) {
 866                                 $mimemap{$ext} = $mime;
 867                         }
 868                 }
 869         }
 870         close(MIME);
 871
 872         $filename =~ /\.(.*?)$/;
 873         return $mimemap{$1};
 874 }
 875
 876 sub mimetype_guess {
 877         my $filename = shift;
 878         my $mime;
 879         $filename =~ /\./ or return undef;
 880
 881         if ($mimetypes_file) {
 882                 my $file = $mimetypes_file;
 883                 #$file =~ m#^/# or $file = "$projectroot/$path/$file";
 884                 $mime = mimetype_guess_file($filename, $file);
 885         }
 886         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
 887         return $mime;
 888 }
 889
 890 sub blob_mimetype {
 891         my $fd = shift;
 892         my $filename = shift;
 893
 894         if ($filename) {
 895                 my $mime = mimetype_guess($filename);
 896                 $mime and return $mime;
 897         }
 898
 899         # just in case
 900         return $default_blob_plain_mimetype unless $fd;
 901
 902         if (-T $fd) {
 903                 return 'text/plain' .
 904                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
 905         } elsif (! $filename) {
 906                 return 'application/octet-stream';
 907         } elsif ($filename =~ m/\.png$/i) {
 908                 return 'image/png';
 909         } elsif ($filename =~ m/\.gif$/i) {
 910                 return 'image/gif';
 911         } elsif ($filename =~ m/\.jpe?g$/i) {
 912                 return 'image/jpeg';
 913         } else {
 914                 return 'application/octet-stream';
 915         }
 916 }
 917
 918 ## ======================================================================
 919 ## functions printing HTML: header, footer, error page
 920
 921 sub git_header_html {
 922         my $status = shift || "200 OK";
 923         my $expires = shift;
 924
 925         my $title = "$site_name git";
 926         if (defined $project) {
 927                 $title .= " - $project";
 928                 if (defined $action) {
 929                         $title .= "/$action";
 930                         if (defined $file_name) {
 931                                 $title .= " - $file_name";
 932                                 if ($action eq "tree" && $file_name !~ m|/$|) {
 933                                         $title .= "/";
 934                                 }
 935                         }
 936                 }
 937         }
 938         my $content_type;
 939         # require explicit support from the UA if we are to send the page as
 940         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
 941         # we have to do this because MSIE sometimes globs '*/*', pretending to
 942         # support xhtml+xml but choking when it gets what it asked for.
 943         if (defined $cgi->http('HTTP_ACCEPT') && $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ && $cgi->Accept('application/xhtml+xml') != 0) {
 944                 $content_type = 'application/xhtml+xml';
 945         } else {
 946                 $content_type = 'text/html';
 947         }
 948         print $cgi->header(-type=>$content_type, -charset => 'utf-8', -status=> $status, -expires => $expires);
 949         print <<EOF;
 950 <?xml version="1.0" encoding="utf-8"?>
 951 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 952 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
 953 <!-- git web interface v$version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
 954 <!-- git core binaries version $git_version -->
 955 <head>
 956 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
 957 <meta name="robots" content="index, nofollow"/>
 958 <title>$title</title>
 959 <link rel="stylesheet" type="text/css" href="$stylesheet"/>
 960 EOF
 961         if (defined $project) {
 962                 printf('<link rel="alternate" title="%s log" '.
 963                        'href="%s" type="application/rss+xml"/>'."\n",
 964                        esc_param($project),
 965                        esc_param("$my_uri?p=$project;a=rss"));
 966         }
 967
 968         print "</head>\n" .
 969               "<body>\n" .
 970               "<div class=\"page_header\">\n" .
 971               "<a href=\"http://www.kernel.org/pub/software/scm/git/docs/\" title=\"git documentation\">" .
 972               "<img src=\"$logo\" width=\"72\" height=\"27\" alt=\"git\" style=\"float:right; border-width:0px;\"/>" .
 973               "</a>\n";
 974         print $cgi->a({-href => esc_param($home_link)}, "projects") . " / ";
 975         if (defined $project) {
 976                 print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=summary")}, esc_html($project));
 977                 if (defined $action) {
 978                         print " / $action";
 979                 }
 980                 print "\n";
 981                 if (!defined $searchtext) {
 982                         $searchtext = "";
 983                 }
 984                 my $search_hash;
 985                 if (defined $hash_base) {
 986                         $search_hash = $hash_base;
 987                 } elsif (defined $hash) {
 988                         $search_hash = $hash;
 989                 } else {
 990                         $search_hash = "HEAD";
 991                 }
 992                 $cgi->param("a", "search");
 993                 $cgi->param("h", $search_hash);
 994                 print $cgi->startform(-method => "get", -action => $my_uri) .
 995                       "<div class=\"search\">\n" .
 996                       $cgi->hidden(-name => "p") . "\n" .
 997                       $cgi->hidden(-name => "a") . "\n" .
 998                       $cgi->hidden(-name => "h") . "\n" .
 999                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1000                       "</div>" .
1001                       $cgi->end_form() . "\n";
1002         }
1003         print "</div>\n";
1004 }
1005
1006 sub git_footer_html {
1007         print "<div class=\"page_footer\">\n";
1008         if (defined $project) {
1009                 my $descr = git_get_project_description($project);
1010                 if (defined $descr) {
1011                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1012                 }
1013                 print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=rss"), -class => "rss_logo"}, "RSS") . "\n";
1014         } else {
1015                 print $cgi->a({-href => "$my_uri?" . esc_param("a=opml"), -class => "rss_logo"}, "OPML") . "\n";
1016         }
1017         print "</div>\n" .
1018               "</body>\n" .
1019               "</html>";
1020 }
1021
1022 sub die_error {
1023         my $status = shift || "403 Forbidden";
1024         my $error = shift || "Malformed query, file missing or permission denied";
1025
1026         git_header_html($status);
1027         print "<div class=\"page_body\">\n" .
1028               "<br/><br/>\n" .
1029               "$status - $error\n" .
1030               "<br/>\n" .
1031               "</div>\n";
1032         git_footer_html();
1033         exit;
1034 }
1035
1036 ## ----------------------------------------------------------------------
1037 ## functions printing or outputting HTML: navigation
1038
1039 sub git_print_page_nav {
1040         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
1041         $extra = '' if !defined $extra; # pager or formats
1042
1043         my @navs = qw(summary shortlog log commit commitdiff tree);
1044         if ($suppress) {
1045                 @navs = grep { $_ ne $suppress } @navs;
1046         }
1047
1048         my %arg = map { $_, ''} @navs;
1049         if (defined $head) {
1050                 for (qw(commit commitdiff)) {
1051                         $arg{$_} = ";h=$head";
1052                 }
1053                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
1054                         for (qw(shortlog log)) {
1055                                 $arg{$_} = ";h=$head";
1056                         }
1057                 }
1058         }
1059         $arg{tree} .= ";h=$treehead" if defined $treehead;
1060         $arg{tree} .= ";hb=$treebase" if defined $treebase;
1061
1062         print "<div class=\"page_nav\">\n" .
1063                 (join " | ",
1064                  map { $_ eq $current
1065                                          ? $_
1066                                          : $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$_$arg{$_}")}, "$_")
1067                                  }
1068                  @navs);
1069         print "<br/>\n$extra<br/>\n" .
1070               "</div>\n";
1071 }
1072
1073 sub format_paging_nav {
1074         my ($action, $hash, $head, $page, $nrevs) = @_;
1075         my $paging_nav;
1076
1077
1078         if ($hash ne $head || $page) {
1079                 $paging_nav .= $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$action")}, "HEAD");
1080         } else {
1081                 $paging_nav .= "HEAD";
1082         }
1083
1084         if ($page > 0) {
1085                 $paging_nav .= " &sdot; " .
1086                         $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$action;h=$hash;pg=" . ($page-1)),
1087                                  -accesskey => "p", -title => "Alt-p"}, "prev");
1088         } else {
1089                 $paging_nav .= " &sdot; prev";
1090         }
1091
1092         if ($nrevs >= (100 * ($page+1)-1)) {
1093                 $paging_nav .= " &sdot; " .
1094                         $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$action;h=$hash;pg=" . ($page+1)),
1095                                  -accesskey => "n", -title => "Alt-n"}, "next");
1096         } else {
1097                 $paging_nav .= " &sdot; next";
1098         }
1099
1100         return $paging_nav;
1101 }
1102
1103 ## ......................................................................
1104 ## functions printing or outputting HTML: div
1105
1106 sub git_print_header_div {
1107         my ($action, $title, $hash, $hash_base) = @_;
1108         my $rest = '';
1109
1110         $rest .= ";h=$hash" if $hash;
1111         $rest .= ";hb=$hash_base" if $hash_base;
1112
1113         print "<div class=\"header\">\n" .
1114               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$action$rest"),
1115                        -class => "title"}, $title ? $title : $action) . "\n" .
1116               "</div>\n";
1117 }
1118
1119 sub git_print_page_path {
1120         my $name = shift;
1121         my $type = shift;
1122
1123         if (!defined $name) {
1124                 print "<div class=\"page_path\"><b>/</b></div>\n";
1125         } elsif (defined $type && $type eq 'blob') {
1126                 print "<div class=\"page_path\"><b>" .
1127                         $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob_plain;f=$file_name")}, esc_html($name)) . "</b><br/></div>\n";
1128         } else {
1129                 print "<div class=\"page_path\"><b>" . esc_html($name) . "</b><br/></div>\n";
1130         }
1131 }
1132
1133 ## ......................................................................
1134 ## functions printing large fragments of HTML
1135
1136 sub git_shortlog_body {
1137         # uses global variable $project
1138         my ($revlist, $from, $to, $refs, $extra) = @_;
1139         $from = 0 unless defined $from;
1140         $to = $#{$revlist} if (!defined $to || $#{$revlist} < $to);
1141
1142         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
1143         my $alternate = 0;
1144         for (my $i = $from; $i <= $to; $i++) {
1145                 my $commit = $revlist->[$i];
1146                 #my $ref = defined $refs ? format_ref_marker($refs, $commit) : '';
1147                 my $ref = format_ref_marker($refs, $commit);
1148                 my %co = parse_commit($commit);
1149                 if ($alternate) {
1150                         print "<tr class=\"dark\">\n";
1151                 } else {
1152                         print "<tr class=\"light\">\n";
1153                 }
1154                 $alternate ^= 1;
1155                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
1156                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
1157                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
1158                       "<td>";
1159                 print format_subject_html($co{'title'}, $co{'title_short'}, "p=$project;a=commit;h=$commit", $ref);
1160                 print "</td>\n" .
1161                       "<td class=\"link\">" .
1162                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit")}, "commit") . " | " .
1163                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff;h=$commit")}, "commitdiff") .
1164                       "</td>\n" .
1165                       "</tr>\n";
1166         }
1167         if (defined $extra) {
1168                 print "<tr>\n" .
1169                       "<td colspan=\"4\">$extra</td>\n" .
1170                       "</tr>\n";
1171         }
1172         print "</table>\n";
1173 }
1174
1175 sub git_history_body {
1176         # Warning: assumes constant type (blob or tree) during history
1177         my ($fd, $refs, $hash_base, $ftype, $extra) = @_;
1178
1179         print "<table class=\"history\" cellspacing=\"0\">\n";
1180         my $alternate = 0;
1181         while (my $line = <$fd>) {
1182                 if ($line !~ m/^([0-9a-fA-F]{40})/) {
1183                         next;
1184                 }
1185
1186                 my $commit = $1;
1187                 my %co = parse_commit($commit);
1188                 if (!%co) {
1189                         next;
1190                 }
1191
1192                 my $ref = format_ref_marker($refs, $commit);
1193
1194                 if ($alternate) {
1195                         print "<tr class=\"dark\">\n";
1196                 } else {
1197                         print "<tr class=\"light\">\n";
1198                 }
1199                 $alternate ^= 1;
1200                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
1201                       # shortlog uses      chop_str($co{'author_name'}, 10)
1202                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
1203                       "<td>";
1204                 # originally git_history used chop_str($co{'title'}, 50)
1205                 print format_subject_html($co{'title'}, $co{'title_short'}, "p=$project;a=commit;h=$commit", $ref);
1206                 print "</td>\n" .
1207                       "<td class=\"link\">" .
1208                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit")}, "commit") . " | " .
1209                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff;h=$commit")}, "commitdiff") . " | " .
1210                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$ftype;hb=$commit;f=$file_name")}, $ftype);
1211
1212                 if ($ftype eq 'blob') {
1213                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
1214                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
1215                         if (defined $blob_current && defined $blob_parent &&
1216                                         $blob_current ne $blob_parent) {
1217                                 print " | " .
1218                                         $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blobdiff;h=$blob_current;hp=$blob_parent;hb=$commit;f=$file_name")},
1219                                                 "diff to current");
1220                         }
1221                 }
1222                 print "</td>\n" .
1223                       "</tr>\n";
1224         }
1225         if (defined $extra) {
1226                 print "<tr>\n" .
1227                       "<td colspan=\"4\">$extra</td>\n" .
1228                       "</tr>\n";
1229         }
1230         print "</table>\n";
1231 }
1232
1233 sub git_tags_body {
1234         # uses global variable $project
1235         my ($taglist, $from, $to, $extra) = @_;
1236         $from = 0 unless defined $from;
1237         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
1238
1239         print "<table class=\"tags\" cellspacing=\"0\">\n";
1240         my $alternate = 0;
1241         for (my $i = $from; $i <= $to; $i++) {
1242                 my $entry = $taglist->[$i];
1243                 my %tag = %$entry;
1244                 my $comment_lines = $tag{'comment'};
1245                 my $comment = shift @$comment_lines;
1246                 my $comment_short;
1247                 if (defined $comment) {
1248                         $comment_short = chop_str($comment, 30, 5);
1249                 }
1250                 if ($alternate) {
1251                         print "<tr class=\"dark\">\n";
1252                 } else {
1253                         print "<tr class=\"light\">\n";
1254                 }
1255                 $alternate ^= 1;
1256                 print "<td><i>$tag{'age'}</i></td>\n" .
1257                       "<td>" .
1258                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$tag{'reftype'};h=$tag{'refid'}"),
1259                                -class => "list"}, "<b>" . esc_html($tag{'name'}) . "</b>") .
1260                       "</td>\n" .
1261                       "<td>";
1262                 if (defined $comment) {
1263                         print format_subject_html($comment, $comment_short, "p=$project;a=tag;h=$tag{'id'}");
1264                 }
1265                 print "</td>\n" .
1266                       "<td class=\"selflink\">";
1267                 if ($tag{'type'} eq "tag") {
1268                         print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tag;h=$tag{'id'}")}, "tag");
1269                 } else {
1270                         print "&nbsp;";
1271                 }
1272                 print "</td>\n" .
1273                       "<td class=\"link\">" . " | " .
1274                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$tag{'reftype'};h=$tag{'refid'}")}, $tag{'reftype'});
1275                 if ($tag{'reftype'} eq "commit") {
1276                         print " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$tag{'name'}")}, "shortlog") .
1277                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=log;h=$tag{'refid'}")}, "log");
1278                 } elsif ($tag{'reftype'} eq "blob") {
1279                         print " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob_plain;h=$tag{'refid'}")}, "raw");
1280                 }
1281                 print "</td>\n" .
1282                       "</tr>";
1283         }
1284         if (defined $extra) {
1285                 print "<tr>\n" .
1286                       "<td colspan=\"5\">$extra</td>\n" .
1287                       "</tr>\n";
1288         }
1289         print "</table>\n";
1290 }
1291
1292 sub git_heads_body {
1293         # uses global variable $project
1294         my ($taglist, $head, $from, $to, $extra) = @_;
1295         $from = 0 unless defined $from;
1296         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
1297
1298         print "<table class=\"heads\" cellspacing=\"0\">\n";
1299         my $alternate = 0;
1300         for (my $i = $from; $i <= $to; $i++) {
1301                 my $entry = $taglist->[$i];
1302                 my %tag = %$entry;
1303                 my $curr = $tag{'id'} eq $head;
1304                 if ($alternate) {
1305                         print "<tr class=\"dark\">\n";
1306                 } else {
1307                         print "<tr class=\"light\">\n";
1308                 }
1309                 $alternate ^= 1;
1310                 print "<td><i>$tag{'age'}</i></td>\n" .
1311                       ($tag{'id'} eq $head ? "<td class=\"current_head\">" : "<td>") .
1312                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$tag{'name'}"),
1313                                -class => "list"}, "<b>" . esc_html($tag{'name'}) . "</b>") .
1314                       "</td>\n" .
1315                       "<td class=\"link\">" .
1316                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$tag{'name'}")}, "shortlog") . " | " .
1317                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=log;h=$tag{'name'}")}, "log") .
1318                       "</td>\n" .
1319                       "</tr>";
1320         }
1321         if (defined $extra) {
1322                 print "<tr>\n" .
1323                       "<td colspan=\"3\">$extra</td>\n" .
1324                       "</tr>\n";
1325         }
1326         print "</table>\n";
1327 }
1328
1329 ## ----------------------------------------------------------------------
1330 ## functions printing large fragments, format as one of arguments
1331
1332 sub git_diff_print {
1333         my $from = shift;
1334         my $from_name = shift;
1335         my $to = shift;
1336         my $to_name = shift;
1337         my $format = shift || "html";
1338
1339         my $from_tmp = "/dev/null";
1340         my $to_tmp = "/dev/null";
1341         my $pid = $$;
1342
1343         # create tmp from-file
1344         if (defined $from) {
1345                 $from_tmp = "$git_temp/gitweb_" . $$ . "_from";
1346                 open my $fd2, "> $from_tmp";
1347                 open my $fd, "-|", $GIT, "cat-file", "blob", $from;
1348                 my @file = <$fd>;
1349                 print $fd2 @file;
1350                 close $fd2;
1351                 close $fd;
1352         }
1353
1354         # create tmp to-file
1355         if (defined $to) {
1356                 $to_tmp = "$git_temp/gitweb_" . $$ . "_to";
1357                 open my $fd2, "> $to_tmp";
1358                 open my $fd, "-|", $GIT, "cat-file", "blob", $to;
1359                 my @file = <$fd>;
1360                 print $fd2 @file;
1361                 close $fd2;
1362                 close $fd;
1363         }
1364
1365         open my $fd, "-|", "/usr/bin/diff -u -p -L \'$from_name\' -L \'$to_name\' $from_tmp $to_tmp";
1366         if ($format eq "plain") {
1367                 undef $/;
1368                 print <$fd>;
1369                 $/ = "\n";
1370         } else {
1371                 while (my $line = <$fd>) {
1372                         chomp $line;
1373                         my $char = substr($line, 0, 1);
1374                         my $diff_class = "";
1375                         if ($char eq '+') {
1376                                 $diff_class = " add";
1377                         } elsif ($char eq "-") {
1378                                 $diff_class = " rem";
1379                         } elsif ($char eq "@") {
1380                                 $diff_class = " chunk_header";
1381                         } elsif ($char eq "\\") {
1382                                 # skip errors
1383                                 next;
1384                         }
1385                         $line = untabify($line);
1386                         print "<div class=\"diff$diff_class\">" . esc_html($line) . "</div>\n";
1387                 }
1388         }
1389         close $fd;
1390
1391         if (defined $from) {
1392                 unlink($from_tmp);
1393         }
1394         if (defined $to) {
1395                 unlink($to_tmp);
1396         }
1397 }
1398
1399
1400 ## ======================================================================
1401 ## ======================================================================
1402 ## actions
1403
1404 sub git_project_list {
1405         my $order = $cgi->param('o');
1406         if (defined $order && $order !~ m/project|descr|owner|age/) {
1407                 die_error(undef, "Unknown order parameter");
1408         }
1409
1410         my @list = git_get_projects_list();
1411         my @projects;
1412         if (!@list) {
1413                 die_error(undef, "No projects found");
1414         }
1415         foreach my $pr (@list) {
1416                 my $head = git_get_head_hash($pr->{'path'});
1417                 if (!defined $head) {
1418                         next;
1419                 }
1420                 $ENV{'GIT_DIR'} = "$projectroot/$pr->{'path'}";
1421                 my %co = parse_commit($head);
1422                 if (!%co) {
1423                         next;
1424                 }
1425                 $pr->{'commit'} = \%co;
1426                 if (!defined $pr->{'descr'}) {
1427                         my $descr = git_get_project_description($pr->{'path'}) || "";
1428                         $pr->{'descr'} = chop_str($descr, 25, 5);
1429                 }
1430                 if (!defined $pr->{'owner'}) {
1431                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
1432                 }
1433                 push @projects, $pr;
1434         }
1435
1436         git_header_html();
1437         if (-f $home_text) {
1438                 print "<div class=\"index_include\">\n";
1439                 open (my $fd, $home_text);
1440                 print <$fd>;
1441                 close $fd;
1442                 print "</div>\n";
1443         }
1444         print "<table class=\"project_list\">\n" .
1445               "<tr>\n";
1446         $order ||= "project";
1447         if ($order eq "project") {
1448                 @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
1449                 print "<th>Project</th>\n";
1450         } else {
1451                 print "<th>" .
1452                       $cgi->a({-href => "$my_uri?" . esc_param("o=project"),
1453                                -class => "header"}, "Project") .
1454                       "</th>\n";
1455         }
1456         if ($order eq "descr") {
1457                 @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
1458                 print "<th>Description</th>\n";
1459         } else {
1460                 print "<th>" .
1461                       $cgi->a({-href => "$my_uri?" . esc_param("o=descr"),
1462                                -class => "header"}, "Description") .
1463                       "</th>\n";
1464         }
1465         if ($order eq "owner") {
1466                 @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
1467                 print "<th>Owner</th>\n";
1468         } else {
1469                 print "<th>" .
1470                       $cgi->a({-href => "$my_uri?" . esc_param("o=owner"),
1471                                -class => "header"}, "Owner") .
1472                       "</th>\n";
1473         }
1474         if ($order eq "age") {
1475                 @projects = sort {$a->{'commit'}{'age'} <=> $b->{'commit'}{'age'}} @projects;
1476                 print "<th>Last Change</th>\n";
1477         } else {
1478                 print "<th>" .
1479                       $cgi->a({-href => "$my_uri?" . esc_param("o=age"),
1480                                -class => "header"}, "Last Change") .
1481                       "</th>\n";
1482         }
1483         print "<th></th>\n" .
1484               "</tr>\n";
1485         my $alternate = 0;
1486         foreach my $pr (@projects) {
1487                 if ($alternate) {
1488                         print "<tr class=\"dark\">\n";
1489                 } else {
1490                         print "<tr class=\"light\">\n";
1491                 }
1492                 $alternate ^= 1;
1493                 print "<td>" . $cgi->a({-href => "$my_uri?" . esc_param("p=$pr->{'path'};a=summary"),
1494                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
1495                       "<td>" . esc_html($pr->{'descr'}) . "</td>\n" .
1496                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
1497                 print "<td class=\"". age_class($pr->{'commit'}{'age'}) . "\">" .
1498                       $pr->{'commit'}{'age_string'} . "</td>\n" .
1499                       "<td class=\"link\">" .
1500                       $cgi->a({-href => "$my_uri?" . esc_param("p=$pr->{'path'};a=summary")}, "summary")   . " | " .
1501                       $cgi->a({-href => "$my_uri?" . esc_param("p=$pr->{'path'};a=shortlog")}, "shortlog") . " | " .
1502                       $cgi->a({-href => "$my_uri?" . esc_param("p=$pr->{'path'};a=log")}, "log") .
1503                       "</td>\n" .
1504                       "</tr>\n";
1505         }
1506         print "</table>\n";
1507         git_footer_html();
1508 }
1509
1510 sub git_summary {
1511         my $descr = git_get_project_description($project) || "none";
1512         my $head = git_get_head_hash($project);
1513         my %co = parse_commit($head);
1514         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
1515
1516         my $owner = git_get_project_owner($project);
1517
1518         my $refs = git_get_references();
1519         git_header_html();
1520         git_print_page_nav('summary','', $head);
1521
1522         print "<div class=\"title\">&nbsp;</div>\n";
1523         print "<table cellspacing=\"0\">\n" .
1524               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
1525               "<tr><td>owner</td><td>$owner</td></tr>\n" .
1526               "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n" .
1527               "</table>\n";
1528
1529         open my $fd, "-|", $GIT, "rev-list", "--max-count=17", git_get_head_hash($project)
1530                 or die_error(undef, "Open git-rev-list failed");
1531         my @revlist = map { chomp; $_ } <$fd>;
1532         close $fd;
1533         git_print_header_div('shortlog');
1534         git_shortlog_body(\@revlist, 0, 15, $refs,
1535                           $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog")}, "..."));
1536
1537         my $taglist = git_get_refs_list("refs/tags");
1538         if (defined @$taglist) {
1539                 git_print_header_div('tags');
1540                 git_tags_body($taglist, 0, 15,
1541                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tags")}, "..."));
1542         }
1543
1544         my $headlist = git_get_refs_list("refs/heads");
1545         if (defined @$headlist) {
1546                 git_print_header_div('heads');
1547                 git_heads_body($headlist, $head, 0, 15,
1548                                $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=heads")}, "..."));
1549         }
1550
1551         git_footer_html();
1552 }
1553
1554 sub git_tag {
1555         my $head = git_get_head_hash($project);
1556         git_header_html();
1557         git_print_page_nav('','', $head,undef,$head);
1558         my %tag = parse_tag($hash);
1559         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
1560         print "<div class=\"title_text\">\n" .
1561               "<table cellspacing=\"0\">\n" .
1562               "<tr>\n" .
1563               "<td>object</td>\n" .
1564               "<td>" . $cgi->a({-class => "list", -href => "$my_uri?" . esc_param("p=$project;a=$tag{'type'};h=$tag{'object'}")}, $tag{'object'}) . "</td>\n" .
1565               "<td class=\"link\">" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$tag{'type'};h=$tag{'object'}")}, $tag{'type'}) . "</td>\n" .
1566               "</tr>\n";
1567         if (defined($tag{'author'})) {
1568                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
1569                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
1570                 print "<tr><td></td><td>" . $ad{'rfc2822'} . sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) . "</td></tr>\n";
1571         }
1572         print "</table>\n\n" .
1573               "</div>\n";
1574         print "<div class=\"page_body\">";
1575         my $comment = $tag{'comment'};
1576         foreach my $line (@$comment) {
1577                 print esc_html($line) . "<br/>\n";
1578         }
1579         print "</div>\n";
1580         git_footer_html();
1581 }
1582
1583 sub git_blame2 {
1584         my $fd;
1585         my $ftype;
1586         die_error(undef, "Permission denied") if (!git_get_project_config_bool ('blame'));
1587         die_error('404 Not Found', "File name not defined") if (!$file_name);
1588         $hash_base ||= git_get_head_hash($project);
1589         die_error(undef, "Couldn't find base commit") unless ($hash_base);
1590         my %co = parse_commit($hash_base)
1591                 or die_error(undef, "Reading commit failed");
1592         if (!defined $hash) {
1593                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
1594                         or die_error(undef, "Error looking up file");
1595         }
1596         $ftype = git_get_type($hash);
1597         if ($ftype !~ "blob") {
1598                 die_error("400 Bad Request", "Object is not a blob");
1599         }
1600         open ($fd, "-|", $GIT, "blame", '-l', $file_name, $hash_base)
1601                 or die_error(undef, "Open git-blame failed");
1602         git_header_html();
1603         my $formats_nav =
1604                 $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$hash;hb=$hash_base;f=$file_name")}, "blob") .
1605                 " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blame;f=$file_name")}, "head");
1606         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
1607         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
1608         git_print_page_path($file_name, $ftype);
1609         my @rev_color = (qw(light2 dark2));
1610         my $num_colors = scalar(@rev_color);
1611         my $current_color = 0;
1612         my $last_rev;
1613         print "<div class=\"page_body\">\n";
1614         print "<table class=\"blame\">\n";
1615         print "<tr><th>Commit</th><th>Line</th><th>Data</th></tr>\n";
1616         while (<$fd>) {
1617                 /^([0-9a-fA-F]{40}).*?(\d+)\)\s{1}(\s*.*)/;
1618                 my $full_rev = $1;
1619                 my $rev = substr($full_rev, 0, 8);
1620                 my $lineno = $2;
1621                 my $data = $3;
1622
1623                 if (!defined $last_rev) {
1624                         $last_rev = $full_rev;
1625                 } elsif ($last_rev ne $full_rev) {
1626                         $last_rev = $full_rev;
1627                         $current_color = ++$current_color % $num_colors;
1628                 }
1629                 print "<tr class=\"$rev_color[$current_color]\">\n";
1630                 print "<td class=\"sha1\">" .
1631                         $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$full_rev;f=$file_name")}, esc_html($rev)) . "</td>\n";
1632                 print "<td class=\"linenr\"><a id=\"l$lineno\" href=\"#l$lineno\" class=\"linenr\">" . esc_html($lineno) . "</a></td>\n";
1633                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
1634                 print "</tr>\n";
1635         }
1636         print "</table>\n";
1637         print "</div>";
1638         close $fd or print "Reading blob failed\n";
1639         git_footer_html();
1640 }
1641
1642 sub git_blame {
1643         my $fd;
1644         die_error('403 Permission denied', "Permission denied") if (!git_get_project_config_bool ('blame'));
1645         die_error('404 Not Found', "File name not defined") if (!$file_name);
1646         $hash_base ||= git_get_head_hash($project);
1647         die_error(undef, "Couldn't find base commit") unless ($hash_base);
1648         my %co = parse_commit($hash_base)
1649                 or die_error(undef, "Reading commit failed");
1650         if (!defined $hash) {
1651                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
1652                         or die_error(undef, "Error lookup file");
1653         }
1654         open ($fd, "-|", $GIT, "annotate", '-l', '-t', '-r', $file_name, $hash_base)
1655                 or die_error(undef, "Open git-annotate failed");
1656         git_header_html();
1657         my $formats_nav =
1658                 $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$hash;hb=$hash_base;f=$file_name")}, "blob") .
1659                 " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blame;f=$file_name")}, "head");
1660         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
1661         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
1662         git_print_page_path($file_name, 'blob');
1663         print "<div class=\"page_body\">\n";
1664         print <<HTML;
1665 <table class="blame">
1666   <tr>
1667     <th>Commit</th>
1668     <th>Age</th>
1669     <th>Author</th>
1670     <th>Line</th>
1671     <th>Data</th>
1672   </tr>
1673 HTML
1674         my @line_class = (qw(light dark));
1675         my $line_class_len = scalar (@line_class);
1676         my $line_class_num = $#line_class;
1677         while (my $line = <$fd>) {
1678                 my $long_rev;
1679                 my $short_rev;
1680                 my $author;
1681                 my $time;
1682                 my $lineno;
1683                 my $data;
1684                 my $age;
1685                 my $age_str;
1686                 my $age_class;
1687
1688                 chomp $line;
1689                 $line_class_num = ($line_class_num + 1) % $line_class_len;
1690
1691                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) \+\d\d\d\d\t(\d+)\)(.*)$/) {
1692                         $long_rev = $1;
1693                         $author   = $2;
1694                         $time     = $3;
1695                         $lineno   = $4;
1696                         $data     = $5;
1697                 } else {
1698                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
1699                         next;
1700                 }
1701                 $short_rev  = substr ($long_rev, 0, 8);
1702                 $age        = time () - $time;
1703                 $age_str    = age_string ($age);
1704                 $age_str    =~ s/ /&nbsp;/g;
1705                 $age_class  = age_class($age);
1706                 $author     = esc_html ($author);
1707                 $author     =~ s/ /&nbsp;/g;
1708
1709                 $data = untabify($data);
1710                 $data = esc_html ($data);
1711
1712                 print <<HTML;
1713   <tr class="$line_class[$line_class_num]">
1714     <td class="sha1"><a href="$my_uri?${\esc_param ("p=$project;a=commit;h=$long_rev")}" class="text">$short_rev..</a></td>
1715     <td class="$age_class">$age_str</td>
1716     <td>$author</td>
1717     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
1718     <td class="pre">$data</td>
1719   </tr>
1720 HTML
1721         } # while (my $line = <$fd>)
1722         print "</table>\n\n";
1723         close $fd or print "Reading blob failed.\n";
1724         print "</div>";
1725         git_footer_html();
1726 }
1727
1728 sub git_tags {
1729         my $head = git_get_head_hash($project);
1730         git_header_html();
1731         git_print_page_nav('','', $head,undef,$head);
1732         git_print_header_div('summary', $project);
1733
1734         my $taglist = git_get_refs_list("refs/tags");
1735         if (defined @$taglist) {
1736                 git_tags_body($taglist);
1737         }
1738         git_footer_html();
1739 }
1740
1741 sub git_heads {
1742         my $head = git_get_head_hash($project);
1743         git_header_html();
1744         git_print_page_nav('','', $head,undef,$head);
1745         git_print_header_div('summary', $project);
1746
1747         my $taglist = git_get_refs_list("refs/heads");
1748         if (defined @$taglist) {
1749                 git_heads_body($taglist, $head);
1750         }
1751         git_footer_html();
1752 }
1753
1754 sub git_blob_plain {
1755         if (!defined $hash) {
1756                 if (defined $file_name) {
1757                         my $base = $hash_base || git_get_head_hash($project);
1758                         $hash = git_get_hash_by_path($base, $file_name, "blob")
1759                                 or die_error(undef, "Error lookup file");
1760                 } else {
1761                         die_error(undef, "No file name defined");
1762                 }
1763         }
1764         my $type = shift;
1765         open my $fd, "-|", $GIT, "cat-file", "blob", $hash
1766                 or die_error(undef, "Couldn't cat $file_name, $hash");
1767
1768         $type ||= blob_mimetype($fd, $file_name);
1769
1770         # save as filename, even when no $file_name is given
1771         my $save_as = "$hash";
1772         if (defined $file_name) {
1773                 $save_as = $file_name;
1774         } elsif ($type =~ m/^text\//) {
1775                 $save_as .= '.txt';
1776         }
1777
1778         print $cgi->header(-type => "$type", '-content-disposition' => "inline; filename=\"$save_as\"");
1779         undef $/;
1780         binmode STDOUT, ':raw';
1781         print <$fd>;
1782         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
1783         $/ = "\n";
1784         close $fd;
1785 }
1786
1787 sub git_blob {
1788         if (!defined $hash) {
1789                 if (defined $file_name) {
1790                         my $base = $hash_base || git_get_head_hash($project);
1791                         $hash = git_get_hash_by_path($base, $file_name, "blob")
1792                                 or die_error(undef, "Error lookup file");
1793                 } else {
1794                         die_error(undef, "No file name defined");
1795                 }
1796         }
1797         my $have_blame = git_get_project_config_bool ('blame');
1798         open my $fd, "-|", $GIT, "cat-file", "blob", $hash
1799                 or die_error(undef, "Couldn't cat $file_name, $hash");
1800         my $mimetype = blob_mimetype($fd, $file_name);
1801         if ($mimetype !~ m/^text\//) {
1802                 close $fd;
1803                 return git_blob_plain($mimetype);
1804         }
1805         git_header_html();
1806         my $formats_nav = '';
1807         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
1808                 if (defined $file_name) {
1809                         if ($have_blame) {
1810                                 $formats_nav .= $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blame;h=$hash;hb=$hash_base;f=$file_name")}, "blame") . " | ";
1811                         }
1812                         $formats_nav .=
1813                                 $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob_plain;h=$hash;f=$file_name")}, "plain") .
1814                                 " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;hb=HEAD;f=$file_name")}, "head");
1815                 } else {
1816                         $formats_nav .= $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob_plain;h=$hash")}, "plain");
1817                 }
1818                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
1819                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
1820         } else {
1821                 print "<div class=\"page_nav\">\n" .
1822                       "<br/><br/></div>\n" .
1823                       "<div class=\"title\">$hash</div>\n";
1824         }
1825         git_print_page_path($file_name, "blob");
1826         print "<div class=\"page_body\">\n";
1827         my $nr;
1828         while (my $line = <$fd>) {
1829                 chomp $line;
1830                 $nr++;
1831                 $line = untabify($line);
1832                 printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n", $nr, $nr, $nr, esc_html($line);
1833         }
1834         close $fd or print "Reading blob failed.\n";
1835         print "</div>";
1836         git_footer_html();
1837 }
1838
1839 sub git_tree {
1840         if (!defined $hash) {
1841                 $hash = git_get_head_hash($project);
1842                 if (defined $file_name) {
1843                         my $base = $hash_base || $hash;
1844                         $hash = git_get_hash_by_path($base, $file_name, "tree");
1845                 }
1846                 if (!defined $hash_base) {
1847                         $hash_base = $hash;
1848                 }
1849         }
1850         $/ = "\0";
1851         open my $fd, "-|", $GIT, "ls-tree", '-z', $hash
1852                 or die_error(undef, "Open git-ls-tree failed");
1853         my @entries = map { chomp; $_ } <$fd>;
1854         close $fd or die_error(undef, "Reading tree failed");
1855         $/ = "\n";
1856
1857         my $refs = git_get_references();
1858         my $ref = format_ref_marker($refs, $hash_base);
1859         git_header_html();
1860         my $base_key = "";
1861         my $base = "";
1862         my $have_blame = git_get_project_config_bool ('blame');
1863         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
1864                 $base_key = ";hb=$hash_base";
1865                 git_print_page_nav('tree','', $hash_base);
1866                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
1867         } else {
1868                 print "<div class=\"page_nav\">\n";
1869                 print "<br/><br/></div>\n";
1870                 print "<div class=\"title\">$hash</div>\n";
1871         }
1872         if (defined $file_name) {
1873                 $base = esc_html("$file_name/");
1874         }
1875         git_print_page_path($file_name, 'tree');
1876         print "<div class=\"page_body\">\n";
1877         print "<table cellspacing=\"0\">\n";
1878         my $alternate = 0;
1879         foreach my $line (@entries) {
1880                 #'100644        blob    0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa        panic.c'
1881                 $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/;
1882                 my $t_mode = $1;
1883                 my $t_type = $2;
1884                 my $t_hash = $3;
1885                 my $t_name = validate_input($4);
1886                 if ($alternate) {
1887                         print "<tr class=\"dark\">\n";
1888                 } else {
1889                         print "<tr class=\"light\">\n";
1890                 }
1891                 $alternate ^= 1;
1892                 print "<td class=\"mode\">" . mode_str($t_mode) . "</td>\n";
1893                 if ($t_type eq "blob") {
1894                         print "<td class=\"list\">" .
1895                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$t_hash$base_key;f=$base$t_name"), -class => "list"}, esc_html($t_name)) .
1896                               "</td>\n" .
1897                               "<td class=\"link\">" .
1898                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$t_hash$base_key;f=$base$t_name")}, "blob");
1899                         if ($have_blame) {
1900                                 print " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blame;h=$t_hash$base_key;f=$base$t_name")}, "blame");
1901                         }
1902                         print " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=history;h=$t_hash;hb=$hash_base;f=$base$t_name")}, "history") .
1903                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob_plain;h=$t_hash;f=$base$t_name")}, "raw") .
1904                               "</td>\n";
1905                 } elsif ($t_type eq "tree") {
1906                         print "<td class=\"list\">" .
1907                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$t_hash$base_key;f=$base$t_name")}, esc_html($t_name)) .
1908                               "</td>\n" .
1909                               "<td class=\"link\">" .
1910                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$t_hash$base_key;f=$base$t_name")}, "tree") .
1911                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=history;hb=$hash_base;f=$base$t_name")}, "history") .
1912                               "</td>\n";
1913                 }
1914                 print "</tr>\n";
1915         }
1916         print "</table>\n" .
1917               "</div>";
1918         git_footer_html();
1919 }
1920
1921 sub git_log {
1922         my $head = git_get_head_hash($project);
1923         if (!defined $hash) {
1924                 $hash = $head;
1925         }
1926         if (!defined $page) {
1927                 $page = 0;
1928         }
1929         my $refs = git_get_references();
1930
1931         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
1932         open my $fd, "-|", $GIT, "rev-list", $limit, $hash
1933                 or die_error(undef, "Open git-rev-list failed");
1934         my @revlist = map { chomp; $_ } <$fd>;
1935         close $fd;
1936
1937         my $paging_nav = format_paging_nav('log', $hash, $head, $page, $#revlist);
1938
1939         git_header_html();
1940         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
1941
1942         if (!@revlist) {
1943                 my %co = parse_commit($hash);
1944
1945                 git_print_header_div('summary', $project);
1946                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
1947         }
1948         for (my $i = ($page * 100); $i <= $#revlist; $i++) {
1949                 my $commit = $revlist[$i];
1950                 my $ref = format_ref_marker($refs, $commit);
1951                 my %co = parse_commit($commit);
1952                 next if !%co;
1953                 my %ad = parse_date($co{'author_epoch'});
1954                 git_print_header_div('commit',
1955                                "<span class=\"age\">$co{'age_string'}</span>" .
1956                                esc_html($co{'title'}) . $ref,
1957                                $commit);
1958                 print "<div class=\"title_text\">\n" .
1959                       "<div class=\"log_link\">\n" .
1960                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit")}, "commit") .
1961                       " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff;h=$commit")}, "commitdiff") .
1962                       "<br/>\n" .
1963                       "</div>\n" .
1964                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
1965                       "</div>\n" .
1966                       "<div class=\"log_body\">\n";
1967                 my $comment = $co{'comment'};
1968                 my $empty = 0;
1969                 foreach my $line (@$comment) {
1970                         if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
1971                                 next;
1972                         }
1973                         if ($line eq "") {
1974                                 if ($empty) {
1975                                         next;
1976                                 }
1977                                 $empty = 1;
1978                         } else {
1979                                 $empty = 0;
1980                         }
1981                         print format_log_line_html($line) . "<br/>\n";
1982                 }
1983                 if (!$empty) {
1984                         print "<br/>\n";
1985                 }
1986                 print "</div>\n";
1987         }
1988         git_footer_html();
1989 }
1990
1991 sub git_commit {
1992         my %co = parse_commit($hash);
1993         if (!%co) {
1994                 die_error(undef, "Unknown commit object");
1995         }
1996         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
1997         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
1998
1999         my $parent = $co{'parent'};
2000         if (!defined $parent) {
2001                 $parent = "--root";
2002         }
2003         open my $fd, "-|", $GIT, "diff-tree", '-r', '-M', $parent, $hash
2004                 or die_error(undef, "Open git-diff-tree failed");
2005         my @difftree = map { chomp; $_ } <$fd>;
2006         close $fd or die_error(undef, "Reading git-diff-tree failed");
2007
2008         # non-textual hash id's can be cached
2009         my $expires;
2010         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2011                 $expires = "+1d";
2012         }
2013         my $refs = git_get_references();
2014         my $ref = format_ref_marker($refs, $co{'id'});
2015         my $formats_nav = '';
2016         if (defined $file_name && defined $co{'parent'}) {
2017                 my $parent = $co{'parent'};
2018                 $formats_nav .= $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blame;hb=$parent;f=$file_name")}, "blame");
2019         }
2020         git_header_html(undef, $expires);
2021         git_print_page_nav('commit', defined $co{'parent'} ? '' : 'commitdiff',
2022                      $hash, $co{'tree'}, $hash,
2023                      $formats_nav);
2024
2025         if (defined $co{'parent'}) {
2026                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
2027         } else {
2028                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
2029         }
2030         print "<div class=\"title_text\">\n" .
2031               "<table cellspacing=\"0\">\n";
2032         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
2033               "<tr>" .
2034               "<td></td><td> $ad{'rfc2822'}";
2035         if ($ad{'hour_local'} < 6) {
2036                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2037         } else {
2038                 printf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2039         }
2040         print "</td>" .
2041               "</tr>\n";
2042         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
2043         print "<tr><td></td><td> $cd{'rfc2822'}" . sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) . "</td></tr>\n";
2044         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
2045         print "<tr>" .
2046               "<td>tree</td>" .
2047               "<td class=\"sha1\">" .
2048               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$co{'tree'};hb=$hash"), class => "list"}, $co{'tree'}) .
2049               "</td>" .
2050               "<td class=\"link\">" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$co{'tree'};hb=$hash")}, "tree") .
2051               "</td>" .
2052               "</tr>\n";
2053         my $parents = $co{'parents'};
2054         foreach my $par (@$parents) {
2055                 print "<tr>" .
2056                       "<td>parent</td>" .
2057                       "<td class=\"sha1\">" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$par"), class => "list"}, $par) . "</td>" .
2058                       "<td class=\"link\">" .
2059                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$par")}, "commit") .
2060                       " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff;h=$hash;hp=$par")}, "commitdiff") .
2061                       "</td>" .
2062                       "</tr>\n";
2063         }
2064         print "</table>".
2065               "</div>\n";
2066         print "<div class=\"page_body\">\n";
2067         my $comment = $co{'comment'};
2068         my $empty = 0;
2069         my $signed = 0;
2070         foreach my $line (@$comment) {
2071                 # print only one empty line
2072                 if ($line eq "") {
2073                         if ($empty || $signed) {
2074                                 next;
2075                         }
2076                         $empty = 1;
2077                 } else {
2078                         $empty = 0;
2079                 }
2080                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2081                         $signed = 1;
2082                         print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
2083                 } else {
2084                         $signed = 0;
2085                         print format_log_line_html($line) . "<br/>\n";
2086                 }
2087         }
2088         print "</div>\n";
2089         print "<div class=\"list_head\">\n";
2090         if ($#difftree > 10) {
2091                 print(($#difftree + 1) . " files changed:\n");
2092         }
2093         print "</div>\n";
2094         print "<table class=\"diff_tree\">\n";
2095         my $alternate = 0;
2096         foreach my $line (@difftree) {
2097                 # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M      ls-files.c'
2098                 # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M      rev-tree.c'
2099                 if ($line !~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
2100                         next;
2101                 }
2102                 my $from_mode = $1;
2103                 my $to_mode = $2;
2104                 my $from_id = $3;
2105                 my $to_id = $4;
2106                 my $status = $5;
2107                 my $similarity = $6;
2108                 my $file = validate_input(unquote($7));
2109                 if ($alternate) {
2110                         print "<tr class=\"dark\">\n";
2111                 } else {
2112                         print "<tr class=\"light\">\n";
2113                 }
2114                 $alternate ^= 1;
2115                 if ($status eq "A") {
2116                         my $mode_chng = "";
2117                         if (S_ISREG(oct $to_mode)) {
2118                                 $mode_chng = sprintf(" with mode: %04o", (oct $to_mode) & 0777);
2119                         }
2120                         print "<td>" .
2121                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$file"), -class => "list"}, esc_html($file)) . "</td>\n" .
2122                               "<td><span class=\"file_status new\">[new " . file_type($to_mode) . "$mode_chng]</span></td>\n" .
2123                               "<td class=\"link\">" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$file")}, "blob") . "</td>\n";
2124                 } elsif ($status eq "D") {
2125                         print "<td>" .
2126                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$from_id;hb=$parent;f=$file"), -class => "list"}, esc_html($file)) . "</td>\n" .
2127                               "<td><span class=\"file_status deleted\">[deleted " . file_type($from_mode). "]</span></td>\n" .
2128                               "<td class=\"link\">" .
2129                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$from_id;hb=$parent;f=$file")}, "blob") .
2130                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=history;hb=$parent;f=$file")}, "history") .
2131                               "</td>\n"
2132                 } elsif ($status eq "M" || $status eq "T") {
2133                         my $mode_chnge = "";
2134                         if ($from_mode != $to_mode) {
2135                                 $mode_chnge = " <span class=\"file_status mode_chnge\">[changed";
2136                                 if (((oct $from_mode) & S_IFMT) != ((oct $to_mode) & S_IFMT)) {
2137                                         $mode_chnge .= " from " . file_type($from_mode) . " to " . file_type($to_mode);
2138                                 }
2139                                 if (((oct $from_mode) & 0777) != ((oct $to_mode) & 0777)) {
2140                                         if (S_ISREG($from_mode) && S_ISREG($to_mode)) {
2141                                                 $mode_chnge .= sprintf(" mode: %04o->%04o", (oct $from_mode) & 0777, (oct $to_mode) & 0777);
2142                                         } elsif (S_ISREG($to_mode)) {
2143                                                 $mode_chnge .= sprintf(" mode: %04o", (oct $to_mode) & 0777);
2144                                         }
2145                                 }
2146                                 $mode_chnge .= "]</span>\n";
2147                         }
2148                         print "<td>";
2149                         if ($to_id ne $from_id) {
2150                                 print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blobdiff;h=$to_id;hp=$from_id;hb=$hash;f=$file"), -class => "list"}, esc_html($file));
2151                         } else {
2152                                 print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$file"), -class => "list"}, esc_html($file));
2153                         }
2154                         print "</td>\n" .
2155                               "<td>$mode_chnge</td>\n" .
2156                               "<td class=\"link\">";
2157                         print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$file")}, "blob");
2158                         if ($to_id ne $from_id) {
2159                                 print " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blobdiff;h=$to_id;hp=$from_id;hb=$hash;f=$file")}, "diff");
2160                         }
2161                         print " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=history;hb=$hash;f=$file")}, "history") . "\n";
2162                         print "</td>\n";
2163                 } elsif ($status eq "R") {
2164                         my ($from_file, $to_file) = split "\t", $file;
2165                         my $mode_chng = "";
2166                         if ($from_mode != $to_mode) {
2167                                 $mode_chng = sprintf(", mode: %04o", (oct $to_mode) & 0777);
2168                         }
2169                         print "<td>" .
2170                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$to_file"), -class => "list"}, esc_html($to_file)) . "</td>\n" .
2171                               "<td><span class=\"file_status moved\">[moved from " .
2172                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$from_id;hb=$parent;f=$from_file"), -class => "list"}, esc_html($from_file)) .
2173                               " with " . (int $similarity) . "% similarity$mode_chng]</span></td>\n" .
2174                               "<td class=\"link\">" .
2175                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$to_file")}, "blob");
2176                         if ($to_id ne $from_id) {
2177                                 print " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blobdiff;h=$to_id;hp=$from_id;hb=$hash;f=$to_file")}, "diff");
2178                         }
2179                         print "</td>\n";
2180                 }
2181                 print "</tr>\n";
2182         }
2183         print "</table>\n";
2184         git_footer_html();
2185 }
2186
2187 sub git_blobdiff {
2188         mkdir($git_temp, 0700);
2189         git_header_html();
2190         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
2191                 my $formats_nav =
2192                         $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blobdiff_plain;h=$hash;hp=$hash_parent")}, "plain");
2193                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2194                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2195         } else {
2196                 print "<div class=\"page_nav\">\n" .
2197                       "<br/><br/></div>\n" .
2198                       "<div class=\"title\">$hash vs $hash_parent</div>\n";
2199         }
2200         git_print_page_path($file_name, "blob");
2201         print "<div class=\"page_body\">\n" .
2202               "<div class=\"diff_info\">blob:" .
2203               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$hash_parent;hb=$hash_base;f=$file_name")}, $hash_parent) .
2204               " -> blob:" .
2205               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$hash;hb=$hash_base;f=$file_name")}, $hash) .
2206               "</div>\n";
2207         git_diff_print($hash_parent, $file_name || $hash_parent, $hash, $file_name || $hash);
2208         print "</div>";
2209         git_footer_html();
2210 }
2211
2212 sub git_blobdiff_plain {
2213         mkdir($git_temp, 0700);
2214         print $cgi->header(-type => "text/plain", -charset => 'utf-8');
2215         git_diff_print($hash_parent, $file_name || $hash_parent, $hash, $file_name || $hash, "plain");
2216 }
2217
2218 sub git_commitdiff {
2219         mkdir($git_temp, 0700);
2220         my %co = parse_commit($hash);
2221         if (!%co) {
2222                 die_error(undef, "Unknown commit object");
2223         }
2224         if (!defined $hash_parent) {
2225                 $hash_parent = $co{'parent'} || '--root';
2226         }
2227         open my $fd, "-|", $GIT, "diff-tree", '-r', $hash_parent, $hash
2228                 or die_error(undef, "Open git-diff-tree failed");
2229         my @difftree = map { chomp; $_ } <$fd>;
2230         close $fd or die_error(undef, "Reading git-diff-tree failed");
2231
2232         # non-textual hash id's can be cached
2233         my $expires;
2234         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2235                 $expires = "+1d";
2236         }
2237         my $refs = git_get_references();
2238         my $ref = format_ref_marker($refs, $co{'id'});
2239         my $formats_nav =
2240                 $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff_plain;h=$hash;hp=$hash_parent")}, "plain");
2241         git_header_html(undef, $expires);
2242         git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
2243         git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
2244         print "<div class=\"page_body\">\n";
2245         my $comment = $co{'comment'};
2246         my $empty = 0;
2247         my $signed = 0;
2248         my @log = @$comment;
2249         # remove first and empty lines after that
2250         shift @log;
2251         while (defined $log[0] && $log[0] eq "") {
2252                 shift @log;
2253         }
2254         foreach my $line (@log) {
2255                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2256                         next;
2257                 }
2258                 if ($line eq "") {
2259                         if ($empty) {
2260                                 next;
2261                         }
2262                         $empty = 1;
2263                 } else {
2264                         $empty = 0;
2265                 }
2266                 print format_log_line_html($line) . "<br/>\n";
2267         }
2268         print "<br/>\n";
2269         foreach my $line (@difftree) {
2270                 # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M      ls-files.c'
2271                 # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M      rev-tree.c'
2272                 if ($line !~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
2273                         next;
2274                 }
2275                 my $from_mode = $1;
2276                 my $to_mode = $2;
2277                 my $from_id = $3;
2278                 my $to_id = $4;
2279                 my $status = $5;
2280                 my $file = validate_input(unquote($6));
2281                 if ($status eq "A") {
2282                         print "<div class=\"diff_info\">" . file_type($to_mode) . ":" .
2283                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$file")}, $to_id) . "(new)" .
2284                               "</div>\n";
2285                         git_diff_print(undef, "/dev/null", $to_id, "b/$file");
2286                 } elsif ($status eq "D") {
2287                         print "<div class=\"diff_info\">" . file_type($from_mode) . ":" .
2288                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$from_id;hb=$hash_parent;f=$file")}, $from_id) . "(deleted)" .
2289                               "</div>\n";
2290                         git_diff_print($from_id, "a/$file", undef, "/dev/null");
2291                 } elsif ($status eq "M") {
2292                         if ($from_id ne $to_id) {
2293                                 print "<div class=\"diff_info\">" .
2294                                       file_type($from_mode) . ":" .
2295                                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$from_id;hb=$hash_parent;f=$file")}, $from_id) .
2296                                       " -> " .
2297                                       file_type($to_mode) . ":" .
2298                                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$file")}, $to_id);
2299                                 print "</div>\n";
2300                                 git_diff_print($from_id, "a/$file",  $to_id, "b/$file");
2301                         }
2302                 }
2303         }
2304         print "<br/>\n" .
2305               "</div>";
2306         git_footer_html();
2307 }
2308
2309 sub git_commitdiff_plain {
2310         mkdir($git_temp, 0700);
2311         my %co = parse_commit($hash);
2312         if (!%co) {
2313                 die_error(undef, "Unknown commit object");
2314         }
2315         if (!defined $hash_parent) {
2316                 $hash_parent = $co{'parent'} || '--root';
2317         }
2318         open my $fd, "-|", $GIT, "diff-tree", '-r', $hash_parent, $hash
2319                 or die_error(undef, "Open git-diff-tree failed");
2320         my @difftree = map { chomp; $_ } <$fd>;
2321         close $fd or die_error(undef, "Reading diff-tree failed");
2322
2323         # try to figure out the next tag after this commit
2324         my $tagname;
2325         my $refs = git_get_references("tags");
2326         open $fd, "-|", $GIT, "rev-list", "HEAD";
2327         my @commits = map { chomp; $_ } <$fd>;
2328         close $fd;
2329         foreach my $commit (@commits) {
2330                 if (defined $refs->{$commit}) {
2331                         $tagname = $refs->{$commit}
2332                 }
2333                 if ($commit eq $hash) {
2334                         last;
2335                 }
2336         }
2337
2338         print $cgi->header(-type => "text/plain", -charset => 'utf-8', '-content-disposition' => "inline; filename=\"git-$hash.patch\"");
2339         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
2340         my $comment = $co{'comment'};
2341         print "From: $co{'author'}\n" .
2342               "Date: $ad{'rfc2822'} ($ad{'tz_local'})\n".
2343               "Subject: $co{'title'}\n";
2344         if (defined $tagname) {
2345                 print "X-Git-Tag: $tagname\n";
2346         }
2347         print "X-Git-Url: $my_url?p=$project;a=commitdiff;h=$hash\n" .
2348               "\n";
2349
2350         foreach my $line (@$comment) {;
2351                 print "$line\n";
2352         }
2353         print "---\n\n";
2354
2355         foreach my $line (@difftree) {
2356                 if ($line !~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
2357                         next;
2358                 }
2359                 my $from_id = $3;
2360                 my $to_id = $4;
2361                 my $status = $5;
2362                 my $file = $6;
2363                 if ($status eq "A") {
2364                         git_diff_print(undef, "/dev/null", $to_id, "b/$file", "plain");
2365                 } elsif ($status eq "D") {
2366                         git_diff_print($from_id, "a/$file", undef, "/dev/null", "plain");
2367                 } elsif ($status eq "M") {
2368                         git_diff_print($from_id, "a/$file",  $to_id, "b/$file", "plain");
2369                 }
2370         }
2371 }
2372
2373 sub git_history {
2374         if (!defined $hash_base) {
2375                 $hash_base = git_get_head_hash($project);
2376         }
2377         my $ftype;
2378         my %co = parse_commit($hash_base);
2379         if (!%co) {
2380                 die_error(undef, "Unknown commit object");
2381         }
2382         my $refs = git_get_references();
2383         git_header_html();
2384         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base);
2385         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2386         if (!defined $hash && defined $file_name) {
2387                 $hash = git_get_hash_by_path($hash_base, $file_name);
2388         }
2389         if (defined $hash) {
2390                 $ftype = git_get_type($hash);
2391         }
2392         git_print_page_path($file_name, $ftype);
2393
2394         open my $fd, "-|",
2395                 $GIT, "rev-list", "--full-history", $hash_base, "--", $file_name;
2396         git_history_body($fd, $refs, $hash_base, $ftype);
2397
2398         close $fd;
2399         git_footer_html();
2400 }
2401
2402 sub git_search {
2403         if (!defined $searchtext) {
2404                 die_error(undef, "Text field empty");
2405         }
2406         if (!defined $hash) {
2407                 $hash = git_get_head_hash($project);
2408         }
2409         my %co = parse_commit($hash);
2410         if (!%co) {
2411                 die_error(undef, "Unknown commit object");
2412         }
2413         # pickaxe may take all resources of your box and run for several minutes
2414         # with every query - so decide by yourself how public you make this feature :)
2415         my $commit_search = 1;
2416         my $author_search = 0;
2417         my $committer_search = 0;
2418         my $pickaxe_search = 0;
2419         if ($searchtext =~ s/^author\\://i) {
2420                 $author_search = 1;
2421         } elsif ($searchtext =~ s/^committer\\://i) {
2422                 $committer_search = 1;
2423         } elsif ($searchtext =~ s/^pickaxe\\://i) {
2424                 $commit_search = 0;
2425                 $pickaxe_search = 1;
2426         }
2427         git_header_html();
2428         git_print_page_nav('','', $hash,$co{'tree'},$hash);
2429         git_print_header_div('commit', esc_html($co{'title'}), $hash);
2430
2431         print "<table cellspacing=\"0\">\n";
2432         my $alternate = 0;
2433         if ($commit_search) {
2434                 $/ = "\0";
2435                 open my $fd, "-|", $GIT, "rev-list", "--header", "--parents", $hash or next;
2436                 while (my $commit_text = <$fd>) {
2437                         if (!grep m/$searchtext/i, $commit_text) {
2438                                 next;
2439                         }
2440                         if ($author_search && !grep m/\nauthor .*$searchtext/i, $commit_text) {
2441                                 next;
2442                         }
2443                         if ($committer_search && !grep m/\ncommitter .*$searchtext/i, $commit_text) {
2444                                 next;
2445                         }
2446                         my @commit_lines = split "\n", $commit_text;
2447                         my %co = parse_commit(undef, \@commit_lines);
2448                         if (!%co) {
2449                                 next;
2450                         }
2451                         if ($alternate) {
2452                                 print "<tr class=\"dark\">\n";
2453                         } else {
2454                                 print "<tr class=\"light\">\n";
2455                         }
2456                         $alternate ^= 1;
2457                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2458                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
2459                               "<td>" .
2460                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$co{'id'}"), -class => "list"}, "<b>" . esc_html(chop_str($co{'title'}, 50)) . "</b><br/>");
2461                         my $comment = $co{'comment'};
2462                         foreach my $line (@$comment) {
2463                                 if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
2464                                         my $lead = esc_html($1) || "";
2465                                         $lead = chop_str($lead, 30, 10);
2466                                         my $match = esc_html($2) || "";
2467                                         my $trail = esc_html($3) || "";
2468                                         $trail = chop_str($trail, 30, 10);
2469                                         my $text = "$lead<span class=\"match\">$match</span>$trail";
2470                                         print chop_str($text, 80, 5) . "<br/>\n";
2471                                 }
2472                         }
2473                         print "</td>\n" .
2474                               "<td class=\"link\">" .
2475                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$co{'id'}")}, "commit") .
2476                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$co{'tree'};hb=$co{'id'}")}, "tree");
2477                         print "</td>\n" .
2478                               "</tr>\n";
2479                 }
2480                 close $fd;
2481         }
2482
2483         if ($pickaxe_search) {
2484                 $/ = "\n";
2485                 open my $fd, "-|", "$GIT rev-list $hash | $GIT diff-tree -r --stdin -S\'$searchtext\'";
2486                 undef %co;
2487                 my @files;
2488                 while (my $line = <$fd>) {
2489                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
2490                                 my %set;
2491                                 $set{'file'} = $6;
2492                                 $set{'from_id'} = $3;
2493                                 $set{'to_id'} = $4;
2494                                 $set{'id'} = $set{'to_id'};
2495                                 if ($set{'id'} =~ m/0{40}/) {
2496                                         $set{'id'} = $set{'from_id'};
2497                                 }
2498                                 if ($set{'id'} =~ m/0{40}/) {
2499                                         next;
2500                                 }
2501                                 push @files, \%set;
2502                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
2503                                 if (%co) {
2504                                         if ($alternate) {
2505                                                 print "<tr class=\"dark\">\n";
2506                                         } else {
2507                                                 print "<tr class=\"light\">\n";
2508                                         }
2509                                         $alternate ^= 1;
2510                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2511                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
2512                                               "<td>" .
2513                                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$co{'id'}"), -class => "list"}, "<b>" .
2514                                               esc_html(chop_str($co{'title'}, 50)) . "</b><br/>");
2515                                         while (my $setref = shift @files) {
2516                                                 my %set = %$setref;
2517                                                 print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$set{'id'};hb=$co{'id'};f=$set{'file'}"), class => "list"},
2518                                                       "<span class=\"match\">" . esc_html($set{'file'}) . "</span>") .
2519                                                       "<br/>\n";
2520                                         }
2521                                         print "</td>\n" .
2522                                               "<td class=\"link\">" .
2523                                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$co{'id'}")}, "commit") .
2524                                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$co{'tree'};hb=$co{'id'}")}, "tree");
2525                                         print "</td>\n" .
2526                                               "</tr>\n";
2527                                 }
2528                                 %co = parse_commit($1);
2529                         }
2530                 }
2531                 close $fd;
2532         }
2533         print "</table>\n";
2534         git_footer_html();
2535 }
2536
2537 sub git_shortlog {
2538         my $head = git_get_head_hash($project);
2539         if (!defined $hash) {
2540                 $hash = $head;
2541         }
2542         if (!defined $page) {
2543                 $page = 0;
2544         }
2545         my $refs = git_get_references();
2546
2547         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
2548         open my $fd, "-|", $GIT, "rev-list", $limit, $hash
2549                 or die_error(undef, "Open git-rev-list failed");
2550         my @revlist = map { chomp; $_ } <$fd>;
2551         close $fd;
2552
2553         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, $#revlist);
2554         my $next_link = '';
2555         if ($#revlist >= (100 * ($page+1)-1)) {
2556                 $next_link =
2557                         $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$hash;pg=" . ($page+1)),
2558                                  -title => "Alt-n"}, "next");
2559         }
2560
2561
2562         git_header_html();
2563         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
2564         git_print_header_div('summary', $project);
2565
2566         git_shortlog_body(\@revlist, ($page * 100), $#revlist, $refs, $next_link);
2567
2568         git_footer_html();
2569 }
2570
2571 ## ......................................................................
2572 ## feeds (RSS, OPML)
2573
2574 sub git_rss {
2575         # http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
2576         open my $fd, "-|", $GIT, "rev-list", "--max-count=150", git_get_head_hash($project)
2577                 or die_error(undef, "Open git-rev-list failed");
2578         my @revlist = map { chomp; $_ } <$fd>;
2579         close $fd or die_error(undef, "Reading git-rev-list failed");
2580         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
2581         print "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n".
2582               "<rss version=\"2.0\" xmlns:content=\"http://purl.org/rss/1.0/modules/content/\">\n";
2583         print "<channel>\n";
2584         print "<title>$project</title>\n".
2585               "<link>" . esc_html("$my_url?p=$project;a=summary") . "</link>\n".
2586               "<description>$project log</description>\n".
2587               "<language>en</language>\n";
2588
2589         for (my $i = 0; $i <= $#revlist; $i++) {
2590                 my $commit = $revlist[$i];
2591                 my %co = parse_commit($commit);
2592                 # we read 150, we always show 30 and the ones more recent than 48 hours
2593                 if (($i >= 20) && ((time - $co{'committer_epoch'}) > 48*60*60)) {
2594                         last;
2595                 }
2596                 my %cd = parse_date($co{'committer_epoch'});
2597                 open $fd, "-|", $GIT, "diff-tree", '-r', $co{'parent'}, $co{'id'} or next;
2598                 my @difftree = map { chomp; $_ } <$fd>;
2599                 close $fd or next;
2600                 print "<item>\n" .
2601                       "<title>" .
2602                       sprintf("%d %s %02d:%02d", $cd{'mday'}, $cd{'month'}, $cd{'hour'}, $cd{'minute'}) . " - " . esc_html($co{'title'}) .
2603                       "</title>\n" .
2604                       "<author>" . esc_html($co{'author'}) . "</author>\n" .
2605                       "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
2606                       "<guid isPermaLink=\"true\">" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</guid>\n" .
2607                       "<link>" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</link>\n" .
2608                       "<description>" . esc_html($co{'title'}) . "</description>\n" .
2609                       "<content:encoded>" .
2610                       "<![CDATA[\n";
2611                 my $comment = $co{'comment'};
2612                 foreach my $line (@$comment) {
2613                         $line = decode("utf8", $line, Encode::FB_DEFAULT);
2614                         print "$line<br/>\n";
2615                 }
2616                 print "<br/>\n";
2617                 foreach my $line (@difftree) {
2618                         if (!($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/)) {
2619                                 next;
2620                         }
2621                         my $file = validate_input(unquote($7));
2622                         $file = decode("utf8", $file, Encode::FB_DEFAULT);
2623                         print "$file<br/>\n";
2624                 }
2625                 print "]]>\n" .
2626                       "</content:encoded>\n" .
2627                       "</item>\n";
2628         }
2629         print "</channel></rss>";
2630 }
2631
2632 sub git_opml {
2633         my @list = git_get_projects_list();
2634
2635         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
2636         print "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n".
2637               "<opml version=\"1.0\">\n".
2638               "<head>".
2639               "  <title>$site_name Git OPML Export</title>\n".
2640               "</head>\n".
2641               "<body>\n".
2642               "<outline text=\"git RSS feeds\">\n";
2643
2644         foreach my $pr (@list) {
2645                 my %proj = %$pr;
2646                 my $head = git_get_head_hash($proj{'path'});
2647                 if (!defined $head) {
2648                         next;
2649                 }
2650                 $ENV{'GIT_DIR'} = "$projectroot/$proj{'path'}";
2651                 my %co = parse_commit($head);
2652                 if (!%co) {
2653                         next;
2654                 }
2655
2656                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
2657                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
2658                 my $html = "$my_url?p=$proj{'path'};a=summary";
2659                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
2660         }
2661         print "</outline>\n".
2662               "</body>\n".
2663               "</opml>\n";
2664 }