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