gitweb/gitweb.cgi

   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 = "267";
  22 our $my_url = $cgi->url();
  23 our $my_uri = $cgi->url(-absolute => 1);
  24 our $rss_link = "";
  25
  26 # core git executable to use
  27 # this can just be "git" if your webserver has a sensible PATH
  28 our $GIT = "/usr/bin/git";
  29
  30 # absolute fs-path which will be prepended to the project path
  31 #our $projectroot = "/pub/scm";
  32 our $projectroot = "/home/kay/public_html/pub/scm";
  33
  34 # version of the core git binary
  35 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
  36
  37 # location for temporary files needed for diffs
  38 our $git_temp = "/tmp/gitweb";
  39 if (! -d $git_temp) {
  40         mkdir($git_temp, 0700) || die_error("Couldn't mkdir $git_temp");
  41 }
  42
  43 # target of the home link on top of all pages
  44 our $home_link = $my_uri;
  45
  46 # name of your site or organization to appear in page titles
  47 # replace this with something more descriptive for clearer bookmarks
  48 our $site_name = $ENV{'SERVER_NAME'} || "Untitled";
  49
  50 # html text to include at home page
  51 our $home_text = "indextext.html";
  52
  53 # URI of default stylesheet
  54 our $stylesheet = "gitweb.css";
  55
  56 # source of projects list
  57 #our $projects_list = $projectroot;
  58 our $projects_list = "index/index.aux";
  59
  60 # default blob_plain mimetype and default charset for text/plain blob
  61 our $default_blob_plain_mimetype = 'text/plain';
  62 our $default_text_plain_charset  = undef;
  63
  64 # file to use for guessing MIME types before trying /etc/mime.types
  65 # (relative to the current git repository)
  66 our $mimetypes_file = undef;
  67
  68 # input validation and dispatch
  69 our $action = $cgi->param('a');
  70 if (defined $action) {
  71         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
  72                 undef $action;
  73                 die_error(undef, "Invalid action parameter.");
  74         }
  75         if ($action eq "git-logo.png") {
  76                 git_logo();
  77                 exit;
  78         } elsif ($action eq "opml") {
  79                 git_opml();
  80                 exit;
  81         }
  82 }
  83
  84 our $order = $cgi->param('o');
  85 if (defined $order) {
  86         if ($order =~ m/[^0-9a-zA-Z_]/) {
  87                 undef $order;
  88                 die_error(undef, "Invalid order parameter.");
  89         }
  90 }
  91
  92 our $project = ($cgi->param('p') || $ENV{'PATH_INFO'});
  93 if (defined $project) {
  94         $project =~ s|^/||; $project =~ s|/$||;
  95         $project = validate_input($project);
  96         if (!defined($project)) {
  97                 die_error(undef, "Invalid project parameter.");
  98         }
  99         if (!(-d "$projectroot/$project")) {
 100                 undef $project;
 101                 die_error(undef, "No such directory.");
 102         }
 103         if (!(-e "$projectroot/$project/HEAD")) {
 104                 undef $project;
 105                 die_error(undef, "No such project.");
 106         }
 107         $rss_link = "<link rel=\"alternate\" title=\"" . esc_param($project) . " log\" href=\"" .
 108                     "$my_uri?" . esc_param("p=$project;a=rss") . "\" type=\"application/rss+xml\"/>";
 109         $ENV{'GIT_DIR'} = "$projectroot/$project";
 110 } else {
 111         git_project_list();
 112         exit;
 113 }
 114
 115 our $file_name = $cgi->param('f');
 116 if (defined $file_name) {
 117         $file_name = validate_input($file_name);
 118         if (!defined($file_name)) {
 119                 die_error(undef, "Invalid file parameter.");
 120         }
 121 }
 122
 123 our $hash = $cgi->param('h');
 124 if (defined $hash) {
 125         $hash = validate_input($hash);
 126         if (!defined($hash)) {
 127                 die_error(undef, "Invalid hash parameter.");
 128         }
 129 }
 130
 131 our $hash_parent = $cgi->param('hp');
 132 if (defined $hash_parent) {
 133         $hash_parent = validate_input($hash_parent);
 134         if (!defined($hash_parent)) {
 135                 die_error(undef, "Invalid hash parent parameter.");
 136         }
 137 }
 138
 139 our $hash_base = $cgi->param('hb');
 140 if (defined $hash_base) {
 141         $hash_base = validate_input($hash_base);
 142         if (!defined($hash_base)) {
 143                 die_error(undef, "Invalid hash base parameter.");
 144         }
 145 }
 146
 147 our $page = $cgi->param('pg');
 148 if (defined $page) {
 149         if ($page =~ m/[^0-9]$/) {
 150                 undef $page;
 151                 die_error(undef, "Invalid page parameter.");
 152         }
 153 }
 154
 155 our $searchtext = $cgi->param('s');
 156 if (defined $searchtext) {
 157         if ($searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 158                 undef $searchtext;
 159                 die_error(undef, "Invalid search parameter.");
 160         }
 161         $searchtext = quotemeta $searchtext;
 162 }
 163
 164 # dispatch
 165 my %actions = (
 166         "blame" => \&git_blame2,
 167         "blobdiff" => \&git_blobdiff,
 168         "blobdiff_plain" => \&git_blobdiff_plain,
 169         "blob" => \&git_blob,
 170         "blob_plain" => \&git_blob_plain,
 171         "commitdiff" => \&git_commitdiff,
 172         "commitdiff_plain" => \&git_commitdiff_plain,
 173         "commit" => \&git_commit,
 174         "heads" => \&git_heads,
 175         "history" => \&git_history,
 176         "log" => \&git_log,
 177         "rss" => \&git_rss,
 178         "search" => \&git_search,
 179         "shortlog" => \&git_shortlog,
 180         "summary" => \&git_summary,
 181         "tag" => \&git_tag,
 182         "tags" => \&git_tags,
 183         "tree" => \&git_tree,
 184 );
 185
 186 $action = 'summary' if (!defined($action));
 187 if (!defined($actions{$action})) {
 188         undef $action;
 189         die_error(undef, "Unknown action.");
 190 }
 191 $actions{$action}->();
 192 exit;
 193
 194 ## ======================================================================
 195 ## validation, quoting/unquoting and escaping
 196
 197 sub validate_input {
 198         my $input = shift;
 199
 200         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 201                 return $input;
 202         }
 203         if ($input =~ m/(^|\/)(|\.|\.\.)($|\/)/) {
 204                 return undef;
 205         }
 206         if ($input =~ m/[^a-zA-Z0-9_\x80-\xff\ \t\.\/\-\+\#\~\%]/) {
 207                 return undef;
 208         }
 209         return $input;
 210 }
 211
 212 # quote unsafe chars, but keep the slash, even when it's not
 213 # correct, but quoted slashes look too horrible in bookmarks
 214 sub esc_param {
 215         my $str = shift;
 216         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 217         $str =~ s/\+/%2B/g;
 218         $str =~ s/ /\+/g;
 219         return $str;
 220 }
 221
 222 # replace invalid utf8 character with SUBSTITUTION sequence
 223 sub esc_html {
 224         my $str = shift;
 225         $str = decode("utf8", $str, Encode::FB_DEFAULT);
 226         $str = escapeHTML($str);
 227         $str =~ s/\014/^L/g; # escape FORM FEED (FF) character (e.g. in COPYING file)
 228         return $str;
 229 }
 230
 231 # git may return quoted and escaped filenames
 232 sub unquote {
 233         my $str = shift;
 234         if ($str =~ m/^"(.*)"$/) {
 235                 $str = $1;
 236                 $str =~ s/\\([0-7]{1,3})/chr(oct($1))/eg;
 237         }
 238         return $str;
 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 $line;
 362 }
 363
 364 # format marker of refs pointing to given object
 365 sub git_get_referencing {
 366         my ($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 ## ----------------------------------------------------------------------
 376 ## git utility subroutines, invoking git commands
 377
 378 # get HEAD ref of given project as hash
 379 sub git_read_head {
 380         my $project = shift;
 381         my $oENV = $ENV{'GIT_DIR'};
 382         my $retval = undef;
 383         $ENV{'GIT_DIR'} = "$projectroot/$project";
 384         if (open my $fd, "-|", $GIT, "rev-parse", "--verify", "HEAD") {
 385                 my $head = <$fd>;
 386                 close $fd;
 387                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
 388                         $retval = $1;
 389                 }
 390         }
 391         if (defined $oENV) {
 392                 $ENV{'GIT_DIR'} = $oENV;
 393         }
 394         return $retval;
 395 }
 396
 397 # get type of given object
 398 sub git_get_type {
 399         my $hash = shift;
 400
 401         open my $fd, "-|", $GIT, "cat-file", '-t', $hash or return;
 402         my $type = <$fd>;
 403         close $fd or return;
 404         chomp $type;
 405         return $type;
 406 }
 407
 408 sub git_get_project_config {
 409         my $key = shift;
 410
 411         return unless ($key);
 412         $key =~ s/^gitweb\.//;
 413         return if ($key =~ m/\W/);
 414
 415         my $val = qx($GIT repo-config --get gitweb.$key);
 416         return ($val);
 417 }
 418
 419 sub git_get_project_config_bool {
 420         my $val = git_get_project_config (@_);
 421         if ($val and $val =~ m/true|yes|on/) {
 422                 return (1);
 423         }
 424         return; # implicit false
 425 }
 426
 427 # get hash of given path at given ref
 428 sub git_get_hash_by_path {
 429         my $base = shift;
 430         my $path = shift || return undef;
 431
 432         my $tree = $base;
 433
 434         open my $fd, "-|", $GIT, "ls-tree", $base, "--", $path
 435                 or die_error(undef, "Open git-ls-tree failed.");
 436         my $line = <$fd>;
 437         close $fd or return undef;
 438
 439         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
 440         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/;
 441         return $3;
 442 }
 443
 444 ## ......................................................................
 445 ## git utility functions, directly accessing git repository
 446
 447 # assumes that PATH is not symref
 448 sub git_read_hash {
 449         my $path = shift;
 450
 451         open my $fd, "$projectroot/$path" or return undef;
 452         my $head = <$fd>;
 453         close $fd;
 454         chomp $head;
 455         if ($head =~ m/^[0-9a-fA-F]{40}$/) {
 456                 return $head;
 457         }
 458 }
 459
 460 sub git_read_description {
 461         my $path = shift;
 462
 463         open my $fd, "$projectroot/$path/description" or return undef;
 464         my $descr = <$fd>;
 465         close $fd;
 466         chomp $descr;
 467         return $descr;
 468 }
 469
 470 sub git_read_projects {
 471         my @list;
 472
 473         if (-d $projects_list) {
 474                 # search in directory
 475                 my $dir = $projects_list;
 476                 opendir my ($dh), $dir or return undef;
 477                 while (my $dir = readdir($dh)) {
 478                         if (-e "$projectroot/$dir/HEAD") {
 479                                 my $pr = {
 480                                         path => $dir,
 481                                 };
 482                                 push @list, $pr
 483                         }
 484                 }
 485                 closedir($dh);
 486         } elsif (-f $projects_list) {
 487                 # read from file(url-encoded):
 488                 # 'git%2Fgit.git Linus+Torvalds'
 489                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
 490                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
 491                 open my ($fd), $projects_list or return undef;
 492                 while (my $line = <$fd>) {
 493                         chomp $line;
 494                         my ($path, $owner) = split ' ', $line;
 495                         $path = unescape($path);
 496                         $owner = unescape($owner);
 497                         if (!defined $path) {
 498                                 next;
 499                         }
 500                         if (-e "$projectroot/$path/HEAD") {
 501                                 my $pr = {
 502                                         path => $path,
 503                                         owner => decode("utf8", $owner, Encode::FB_DEFAULT),
 504                                 };
 505                                 push @list, $pr
 506                         }
 507                 }
 508                 close $fd;
 509         }
 510         @list = sort {$a->{'path'} cmp $b->{'path'}} @list;
 511         return @list;
 512 }
 513
 514 sub read_info_ref {
 515         my $type = shift || "";
 516         my %refs;
 517         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c      refs/tags/v2.6.11
 518         # c39ae07f393806ccf406ef966e9a15afc43cc36a      refs/tags/v2.6.11^{}
 519         open my $fd, "$projectroot/$project/info/refs" or return;
 520         while (my $line = <$fd>) {
 521                 chomp $line;
 522                 # attention: for $type == "" it saves only last path part of ref name
 523                 # e.g. from 'refs/heads/jn/gitweb' it would leave only 'gitweb'
 524                 if ($line =~ m/^([0-9a-fA-F]{40})\t.*$type\/([^\^]+)/) {
 525                         if (defined $refs{$1}) {
 526                                 $refs{$1} .= " / $2";
 527                         } else {
 528                                 $refs{$1} = $2;
 529                         }
 530                 }
 531         }
 532         close $fd or return;
 533         return \%refs;
 534 }
 535
 536 ## ----------------------------------------------------------------------
 537 ## parse to hash functions
 538
 539 sub date_str {
 540         my $epoch = shift;
 541         my $tz = shift || "-0000";
 542
 543         my %date;
 544         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
 545         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
 546         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
 547         $date{'hour'} = $hour;
 548         $date{'minute'} = $min;
 549         $date{'mday'} = $mday;
 550         $date{'day'} = $days[$wday];
 551         $date{'month'} = $months[$mon];
 552         $date{'rfc2822'} = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000", $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
 553         $date{'mday-time'} = sprintf "%d %s %02d:%02d", $mday, $months[$mon], $hour ,$min;
 554
 555         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
 556         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
 557         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
 558         $date{'hour_local'} = $hour;
 559         $date{'minute_local'} = $min;
 560         $date{'tz_local'} = $tz;
 561         return %date;
 562 }
 563
 564 sub git_read_tag {
 565         my $tag_id = shift;
 566         my %tag;
 567         my @comment;
 568
 569         open my $fd, "-|", $GIT, "cat-file", "tag", $tag_id or return;
 570         $tag{'id'} = $tag_id;
 571         while (my $line = <$fd>) {
 572                 chomp $line;
 573                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
 574                         $tag{'object'} = $1;
 575                 } elsif ($line =~ m/^type (.+)$/) {
 576                         $tag{'type'} = $1;
 577                 } elsif ($line =~ m/^tag (.+)$/) {
 578                         $tag{'name'} = $1;
 579                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
 580                         $tag{'author'} = $1;
 581                         $tag{'epoch'} = $2;
 582                         $tag{'tz'} = $3;
 583                 } elsif ($line =~ m/--BEGIN/) {
 584                         push @comment, $line;
 585                         last;
 586                 } elsif ($line eq "") {
 587                         last;
 588                 }
 589         }
 590         push @comment, <$fd>;
 591         $tag{'comment'} = \@comment;
 592         close $fd or return;
 593         if (!defined $tag{'name'}) {
 594                 return
 595         };
 596         return %tag
 597 }
 598
 599 sub git_read_commit {
 600         my $commit_id = shift;
 601         my $commit_text = shift;
 602
 603         my @commit_lines;
 604         my %co;
 605
 606         if (defined $commit_text) {
 607                 @commit_lines = @$commit_text;
 608         } else {
 609                 $/ = "\0";
 610                 open my $fd, "-|", $GIT, "rev-list", "--header", "--parents", "--max-count=1", $commit_id or return;
 611                 @commit_lines = split '\n', <$fd>;
 612                 close $fd or return;
 613                 $/ = "\n";
 614                 pop @commit_lines;
 615         }
 616         my $header = shift @commit_lines;
 617         if (!($header =~ m/^[0-9a-fA-F]{40}/)) {
 618                 return;
 619         }
 620         ($co{'id'}, my @parents) = split ' ', $header;
 621         $co{'parents'} = \@parents;
 622         $co{'parent'} = $parents[0];
 623         while (my $line = shift @commit_lines) {
 624                 last if $line eq "\n";
 625                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
 626                         $co{'tree'} = $1;
 627                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
 628                         $co{'author'} = $1;
 629                         $co{'author_epoch'} = $2;
 630                         $co{'author_tz'} = $3;
 631                         if ($co{'author'} =~ m/^([^<]+) </) {
 632                                 $co{'author_name'} = $1;
 633                         } else {
 634                                 $co{'author_name'} = $co{'author'};
 635                         }
 636                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
 637                         $co{'committer'} = $1;
 638                         $co{'committer_epoch'} = $2;
 639                         $co{'committer_tz'} = $3;
 640                         $co{'committer_name'} = $co{'committer'};
 641                         $co{'committer_name'} =~ s/ <.*//;
 642                 }
 643         }
 644         if (!defined $co{'tree'}) {
 645                 return;
 646         };
 647
 648         foreach my $title (@commit_lines) {
 649                 $title =~ s/^    //;
 650                 if ($title ne "") {
 651                         $co{'title'} = chop_str($title, 80, 5);
 652                         # remove leading stuff of merges to make the interesting part visible
 653                         if (length($title) > 50) {
 654                                 $title =~ s/^Automatic //;
 655                                 $title =~ s/^merge (of|with) /Merge ... /i;
 656                                 if (length($title) > 50) {
 657                                         $title =~ s/(http|rsync):\/\///;
 658                                 }
 659                                 if (length($title) > 50) {
 660                                         $title =~ s/(master|www|rsync)\.//;
 661                                 }
 662                                 if (length($title) > 50) {
 663                                         $title =~ s/kernel.org:?//;
 664                                 }
 665                                 if (length($title) > 50) {
 666                                         $title =~ s/\/pub\/scm//;
 667                                 }
 668                         }
 669                         $co{'title_short'} = chop_str($title, 50, 5);
 670                         last;
 671                 }
 672         }
 673         # remove added spaces
 674         foreach my $line (@commit_lines) {
 675                 $line =~ s/^    //;
 676         }
 677         $co{'comment'} = \@commit_lines;
 678
 679         my $age = time - $co{'committer_epoch'};
 680         $co{'age'} = $age;
 681         $co{'age_string'} = age_string($age);
 682         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
 683         if ($age > 60*60*24*7*2) {
 684                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
 685                 $co{'age_string_age'} = $co{'age_string'};
 686         } else {
 687                 $co{'age_string_date'} = $co{'age_string'};
 688                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
 689         }
 690         return %co;
 691 }
 692
 693 ## ......................................................................
 694 ## parse to array of hashes functions
 695
 696 sub git_read_refs {
 697         my $ref_dir = shift;
 698         my @reflist;
 699
 700         my @refs;
 701         my $pfxlen = length("$projectroot/$project/$ref_dir");
 702         File::Find::find(sub {
 703                 return if (/^\./);
 704                 if (-f $_) {
 705                         push @refs, substr($File::Find::name, $pfxlen + 1);
 706                 }
 707         }, "$projectroot/$project/$ref_dir");
 708
 709         foreach my $ref_file (@refs) {
 710                 my $ref_id = git_read_hash("$project/$ref_dir/$ref_file");
 711                 my $type = git_get_type($ref_id) || next;
 712                 my %ref_item;
 713                 my %co;
 714                 $ref_item{'type'} = $type;
 715                 $ref_item{'id'} = $ref_id;
 716                 $ref_item{'epoch'} = 0;
 717                 $ref_item{'age'} = "unknown";
 718                 if ($type eq "tag") {
 719                         my %tag = git_read_tag($ref_id);
 720                         $ref_item{'comment'} = $tag{'comment'};
 721                         if ($tag{'type'} eq "commit") {
 722                                 %co = git_read_commit($tag{'object'});
 723                                 $ref_item{'epoch'} = $co{'committer_epoch'};
 724                                 $ref_item{'age'} = $co{'age_string'};
 725                         } elsif (defined($tag{'epoch'})) {
 726                                 my $age = time - $tag{'epoch'};
 727                                 $ref_item{'epoch'} = $tag{'epoch'};
 728                                 $ref_item{'age'} = age_string($age);
 729                         }
 730                         $ref_item{'reftype'} = $tag{'type'};
 731                         $ref_item{'name'} = $tag{'name'};
 732                         $ref_item{'refid'} = $tag{'object'};
 733                 } elsif ($type eq "commit"){
 734                         %co = git_read_commit($ref_id);
 735                         $ref_item{'reftype'} = "commit";
 736                         $ref_item{'name'} = $ref_file;
 737                         $ref_item{'title'} = $co{'title'};
 738                         $ref_item{'refid'} = $ref_id;
 739                         $ref_item{'epoch'} = $co{'committer_epoch'};
 740                         $ref_item{'age'} = $co{'age_string'};
 741                 } else {
 742                         $ref_item{'reftype'} = $type;
 743                         $ref_item{'name'} = $ref_file;
 744                         $ref_item{'refid'} = $ref_id;
 745                 }
 746
 747                 push @reflist, \%ref_item;
 748         }
 749         # sort tags by age
 750         @reflist = sort {$b->{'epoch'} <=> $a->{'epoch'}} @reflist;
 751         return \@reflist;
 752 }
 753
 754 ## ----------------------------------------------------------------------
 755 ## filesystem-related functions
 756
 757 sub get_file_owner {
 758         my $path = shift;
 759
 760         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
 761         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
 762         if (!defined $gcos) {
 763                 return undef;
 764         }
 765         my $owner = $gcos;
 766         $owner =~ s/[,;].*$//;
 767         return decode("utf8", $owner, Encode::FB_DEFAULT);
 768 }
 769
 770 ## ......................................................................
 771 ## mimetype related functions
 772
 773 sub mimetype_guess_file {
 774         my $filename = shift;
 775         my $mimemap = shift;
 776         -r $mimemap or return undef;
 777
 778         my %mimemap;
 779         open(MIME, $mimemap) or return undef;
 780         while (<MIME>) {
 781                 my ($mime, $exts) = split(/\t+/);
 782                 if (defined $exts) {
 783                         my @exts = split(/\s+/, $exts);
 784                         foreach my $ext (@exts) {
 785                                 $mimemap{$ext} = $mime;
 786                         }
 787                 }
 788         }
 789         close(MIME);
 790
 791         $filename =~ /\.(.*?)$/;
 792         return $mimemap{$1};
 793 }
 794
 795 sub mimetype_guess {
 796         my $filename = shift;
 797         my $mime;
 798         $filename =~ /\./ or return undef;
 799
 800         if ($mimetypes_file) {
 801                 my $file = $mimetypes_file;
 802                 #$file =~ m#^/# or $file = "$projectroot/$path/$file";
 803                 $mime = mimetype_guess_file($filename, $file);
 804         }
 805         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
 806         return $mime;
 807 }
 808
 809 sub git_blob_plain_mimetype {
 810         my $fd = shift;
 811         my $filename = shift;
 812
 813         if ($filename) {
 814                 my $mime = mimetype_guess($filename);
 815                 $mime and return $mime;
 816         }
 817
 818         # just in case
 819         return $default_blob_plain_mimetype unless $fd;
 820
 821         if (-T $fd) {
 822                 return 'text/plain' .
 823                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
 824         } elsif (! $filename) {
 825                 return 'application/octet-stream';
 826         } elsif ($filename =~ m/\.png$/i) {
 827                 return 'image/png';
 828         } elsif ($filename =~ m/\.gif$/i) {
 829                 return 'image/gif';
 830         } elsif ($filename =~ m/\.jpe?g$/i) {
 831                 return 'image/jpeg';
 832         } else {
 833                 return 'application/octet-stream';
 834         }
 835 }
 836
 837 ## ======================================================================
 838 ## functions printing HTML: header, footer, error page
 839
 840 sub git_header_html {
 841         my $status = shift || "200 OK";
 842         my $expires = shift;
 843
 844         my $title = "$site_name git";
 845         if (defined $project) {
 846                 $title .= " - $project";
 847                 if (defined $action) {
 848                         $title .= "/$action";
 849                         if (defined $file_name) {
 850                                 $title .= " - $file_name";
 851                                 if ($action eq "tree" && $file_name !~ m|/$|) {
 852                                         $title .= "/";
 853                                 }
 854                         }
 855                 }
 856         }
 857         my $content_type;
 858         # require explicit support from the UA if we are to send the page as
 859         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
 860         # we have to do this because MSIE sometimes globs '*/*', pretending to
 861         # support xhtml+xml but choking when it gets what it asked for.
 862         if ($cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ && $cgi->Accept('application/xhtml+xml') != 0) {
 863                 $content_type = 'application/xhtml+xml';
 864         } else {
 865                 $content_type = 'text/html';
 866         }
 867         print $cgi->header(-type=>$content_type, -charset => 'utf-8', -status=> $status, -expires => $expires);
 868         print <<EOF;
 869 <?xml version="1.0" encoding="utf-8"?>
 870 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 871 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
 872 <!-- git web interface v$version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
 873 <!-- git core binaries version $git_version -->
 874 <head>
 875 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
 876 <meta name="robots" content="index, nofollow"/>
 877 <title>$title</title>
 878 <link rel="stylesheet" type="text/css" href="$stylesheet"/>
 879 $rss_link
 880 </head>
 881 <body>
 882 EOF
 883         print "<div class=\"page_header\">\n" .
 884               "<a href=\"http://www.kernel.org/pub/software/scm/git/docs/\" title=\"git documentation\">" .
 885               "<img src=\"$my_uri?" . esc_param("a=git-logo.png") . "\" width=\"72\" height=\"27\" alt=\"git\" style=\"float:right; border-width:0px;\"/>" .
 886               "</a>\n";
 887         print $cgi->a({-href => esc_param($home_link)}, "projects") . " / ";
 888         if (defined $project) {
 889                 print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=summary")}, esc_html($project));
 890                 if (defined $action) {
 891                         print " / $action";
 892                 }
 893                 print "\n";
 894                 if (!defined $searchtext) {
 895                         $searchtext = "";
 896                 }
 897                 my $search_hash;
 898                 if (defined $hash_base) {
 899                         $search_hash = $hash_base;
 900                 } elsif (defined $hash) {
 901                         $search_hash = $hash;
 902                 } else {
 903                         $search_hash = "HEAD";
 904                 }
 905                 $cgi->param("a", "search");
 906                 $cgi->param("h", $search_hash);
 907                 print $cgi->startform(-method => "get", -action => $my_uri) .
 908                       "<div class=\"search\">\n" .
 909                       $cgi->hidden(-name => "p") . "\n" .
 910                       $cgi->hidden(-name => "a") . "\n" .
 911                       $cgi->hidden(-name => "h") . "\n" .
 912                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
 913                       "</div>" .
 914                       $cgi->end_form() . "\n";
 915         }
 916         print "</div>\n";
 917 }
 918
 919 sub git_footer_html {
 920         print "<div class=\"page_footer\">\n";
 921         if (defined $project) {
 922                 my $descr = git_read_description($project);
 923                 if (defined $descr) {
 924                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
 925                 }
 926                 print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=rss"), -class => "rss_logo"}, "RSS") . "\n";
 927         } else {
 928                 print $cgi->a({-href => "$my_uri?" . esc_param("a=opml"), -class => "rss_logo"}, "OPML") . "\n";
 929         }
 930         print "</div>\n" .
 931               "</body>\n" .
 932               "</html>";
 933 }
 934
 935 sub die_error {
 936         my $status = shift || "403 Forbidden";
 937         my $error = shift || "Malformed query, file missing or permission denied";
 938
 939         git_header_html($status);
 940         print "<div class=\"page_body\">\n" .
 941               "<br/><br/>\n" .
 942               "$status - $error\n" .
 943               "<br/>\n" .
 944               "</div>\n";
 945         git_footer_html();
 946         exit;
 947 }
 948
 949 ## ----------------------------------------------------------------------
 950 ## functions printing or outputting HTML: navigation
 951
 952 sub git_page_nav {
 953         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
 954         $extra = '' if !defined $extra; # pager or formats
 955
 956         my @navs = qw(summary shortlog log commit commitdiff tree);
 957         if ($suppress) {
 958                 @navs = grep { $_ ne $suppress } @navs;
 959         }
 960
 961         my %arg = map { $_, ''} @navs;
 962         if (defined $head) {
 963                 for (qw(commit commitdiff)) {
 964                         $arg{$_} = ";h=$head";
 965                 }
 966                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
 967                         for (qw(shortlog log)) {
 968                                 $arg{$_} = ";h=$head";
 969                         }
 970                 }
 971         }
 972         $arg{tree} .= ";h=$treehead" if defined $treehead;
 973         $arg{tree} .= ";hb=$treebase" if defined $treebase;
 974
 975         print "<div class=\"page_nav\">\n" .
 976                 (join " | ",
 977                  map { $_ eq $current
 978                                          ? $_
 979                                          : $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$_$arg{$_}")}, "$_")
 980                                  }
 981                  @navs);
 982         print "<br/>\n$extra<br/>\n" .
 983               "</div>\n";
 984 }
 985
 986 sub git_get_paging_nav {
 987         my ($action, $hash, $head, $page, $nrevs) = @_;
 988         my $paging_nav;
 989
 990
 991         if ($hash ne $head || $page) {
 992                 $paging_nav .= $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$action")}, "HEAD");
 993         } else {
 994                 $paging_nav .= "HEAD";
 995         }
 996
 997         if ($page > 0) {
 998                 $paging_nav .= " &sdot; " .
 999                         $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$action;h=$hash;pg=" . ($page-1)),
1000                                                          -accesskey => "p", -title => "Alt-p"}, "prev");
1001         } else {
1002                 $paging_nav .= " &sdot; prev";
1003         }
1004
1005         if ($nrevs >= (100 * ($page+1)-1)) {
1006                 $paging_nav .= " &sdot; " .
1007                         $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$action;h=$hash;pg=" . ($page+1)),
1008                                                          -accesskey => "n", -title => "Alt-n"}, "next");
1009         } else {
1010                 $paging_nav .= " &sdot; next";
1011         }
1012
1013         return $paging_nav;
1014 }
1015
1016 ## ......................................................................
1017 ## functions printing or outputting HTML: div
1018
1019 sub git_header_div {
1020         my ($action, $title, $hash, $hash_base) = @_;
1021         my $rest = '';
1022
1023         $rest .= ";h=$hash" if $hash;
1024         $rest .= ";hb=$hash_base" if $hash_base;
1025
1026         print "<div class=\"header\">\n" .
1027               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$action$rest"),
1028                        -class => "title"}, $title ? $title : $action) . "\n" .
1029               "</div>\n";
1030 }
1031
1032 sub git_print_page_path {
1033         my $name = shift;
1034         my $type = shift;
1035
1036         if (!defined $name) {
1037                 print "<div class=\"page_path\"><b>/</b></div>\n";
1038         } elsif (defined $type && $type eq 'blob') {
1039                 print "<div class=\"page_path\"><b>" .
1040                         $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob_plain;f=$file_name")}, esc_html($name)) . "</b><br/></div>\n";
1041         } else {
1042                 print "<div class=\"page_path\"><b>" . esc_html($name) . "</b><br/></div>\n";
1043         }
1044 }
1045
1046 ## ......................................................................
1047 ## functions printing large fragments of HTML
1048
1049 sub git_shortlog_body {
1050         # uses global variable $project
1051         my ($revlist, $from, $to, $refs, $extra) = @_;
1052         $from = 0 unless defined $from;
1053         $to = $#{$revlist} if (!defined $to || $#{$revlist} < $to);
1054
1055         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
1056         my $alternate = 0;
1057         for (my $i = $from; $i <= $to; $i++) {
1058                 my $commit = $revlist->[$i];
1059                 #my $ref = defined $refs ? git_get_referencing($refs, $commit) : '';
1060                 my $ref = git_get_referencing($refs, $commit);
1061                 my %co = git_read_commit($commit);
1062                 my %ad = date_str($co{'author_epoch'});
1063                 if ($alternate) {
1064                         print "<tr class=\"dark\">\n";
1065                 } else {
1066                         print "<tr class=\"light\">\n";
1067                 }
1068                 $alternate ^= 1;
1069                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
1070                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
1071                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
1072                       "<td>";
1073                 if (length($co{'title_short'}) < length($co{'title'})) {
1074                         print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit"),
1075                                        -class => "list", -title => "$co{'title'}"},
1076                               "<b>" . esc_html($co{'title_short'}) . "$ref</b>");
1077                 } else {
1078                         print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit"),
1079                                        -class => "list"},
1080                               "<b>" . esc_html($co{'title'}) . "$ref</b>");
1081                 }
1082                 print "</td>\n" .
1083                       "<td class=\"link\">" .
1084                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit")}, "commit") . " | " .
1085                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff;h=$commit")}, "commitdiff") .
1086                       "</td>\n" .
1087                       "</tr>\n";
1088         }
1089         if (defined $extra) {
1090                 print "<tr>\n" .
1091                       "<td colspan=\"4\">$extra</td>\n" .
1092                       "</tr>\n";
1093         }
1094         print "</table>\n";
1095 }
1096
1097 sub git_tags_body {
1098         # uses global variable $project
1099         my ($taglist, $from, $to, $extra) = @_;
1100         $from = 0 unless defined $from;
1101         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
1102
1103         print "<table class=\"tags\" cellspacing=\"0\">\n";
1104         my $alternate = 0;
1105         for (my $i = $from; $i <= $to; $i++) {
1106                 my $entry = $taglist->[$i];
1107                 my %tag = %$entry;
1108                 my $comment_lines = $tag{'comment'};
1109                 my $comment = shift @$comment_lines;
1110                 my $comment_short;
1111                 if (defined $comment) {
1112                         $comment_short = chop_str($comment, 30, 5);
1113                 }
1114                 if ($alternate) {
1115                         print "<tr class=\"dark\">\n";
1116                 } else {
1117                         print "<tr class=\"light\">\n";
1118                 }
1119                 $alternate ^= 1;
1120                 print "<td><i>$tag{'age'}</i></td>\n" .
1121                       "<td>" .
1122                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$tag{'reftype'};h=$tag{'refid'}"),
1123                                -class => "list"}, "<b>" . esc_html($tag{'name'}) . "</b>") .
1124                       "</td>\n" .
1125                       "<td>";
1126                 if (defined $comment) {
1127                         if (length($comment_short) < length($comment)) {
1128                                 print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tag;h=$tag{'id'}"),
1129                                                -class => "list", -title => $comment}, $comment_short);
1130                         } else {
1131                                 print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tag;h=$tag{'id'}"),
1132                                                -class => "list"}, $comment);
1133                         }
1134                 }
1135                 print "</td>\n" .
1136                       "<td class=\"selflink\">";
1137                 if ($tag{'type'} eq "tag") {
1138                         print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tag;h=$tag{'id'}")}, "tag");
1139                 } else {
1140                         print "&nbsp;";
1141                 }
1142                 print "</td>\n" .
1143                       "<td class=\"link\">" . " | " .
1144                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$tag{'reftype'};h=$tag{'refid'}")}, $tag{'reftype'});
1145                 if ($tag{'reftype'} eq "commit") {
1146                         print " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$tag{'name'}")}, "shortlog") .
1147                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=log;h=$tag{'refid'}")}, "log");
1148                 } elsif ($tag{'reftype'} eq "blob") {
1149                         print " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob_plain;h=$tag{'refid'}")}, "raw");
1150                 }
1151                 print "</td>\n" .
1152                       "</tr>";
1153         }
1154         if (defined $extra) {
1155                 print "<tr>\n" .
1156                       "<td colspan=\"5\">$extra</td>\n" .
1157                       "</tr>\n";
1158         }
1159         print "</table>\n";
1160 }
1161
1162 sub git_heads_body {
1163         # uses global variable $project
1164         my ($taglist, $head, $from, $to, $extra) = @_;
1165         $from = 0 unless defined $from;
1166         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
1167
1168         print "<table class=\"heads\" cellspacing=\"0\">\n";
1169         my $alternate = 0;
1170         for (my $i = $from; $i <= $to; $i++) {
1171                 my $entry = $taglist->[$i];
1172                 my %tag = %$entry;
1173                 my $curr = $tag{'id'} eq $head;
1174                 if ($alternate) {
1175                         print "<tr class=\"dark\">\n";
1176                 } else {
1177                         print "<tr class=\"light\">\n";
1178                 }
1179                 $alternate ^= 1;
1180                 print "<td><i>$tag{'age'}</i></td>\n" .
1181                       ($tag{'id'} eq $head ? "<td class=\"current_head\">" : "<td>") .
1182                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$tag{'name'}"),
1183                                -class => "list"}, "<b>" . esc_html($tag{'name'}) . "</b>") .
1184                       "</td>\n" .
1185                       "<td class=\"link\">" .
1186                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$tag{'name'}")}, "shortlog") . " | " .
1187                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=log;h=$tag{'name'}")}, "log") .
1188                       "</td>\n" .
1189                       "</tr>";
1190         }
1191         if (defined $extra) {
1192                 print "<tr>\n" .
1193                       "<td colspan=\"3\">$extra</td>\n" .
1194                       "</tr>\n";
1195         }
1196         print "</table>\n";
1197 }
1198
1199 ## ----------------------------------------------------------------------
1200 ## functions printing large fragments, format as one of arguments
1201
1202 sub git_diff_print {
1203         my $from = shift;
1204         my $from_name = shift;
1205         my $to = shift;
1206         my $to_name = shift;
1207         my $format = shift || "html";
1208
1209         my $from_tmp = "/dev/null";
1210         my $to_tmp = "/dev/null";
1211         my $pid = $$;
1212
1213         # create tmp from-file
1214         if (defined $from) {
1215                 $from_tmp = "$git_temp/gitweb_" . $$ . "_from";
1216                 open my $fd2, "> $from_tmp";
1217                 open my $fd, "-|", $GIT, "cat-file", "blob", $from;
1218                 my @file = <$fd>;
1219                 print $fd2 @file;
1220                 close $fd2;
1221                 close $fd;
1222         }
1223
1224         # create tmp to-file
1225         if (defined $to) {
1226                 $to_tmp = "$git_temp/gitweb_" . $$ . "_to";
1227                 open my $fd2, "> $to_tmp";
1228                 open my $fd, "-|", $GIT, "cat-file", "blob", $to;
1229                 my @file = <$fd>;
1230                 print $fd2 @file;
1231                 close $fd2;
1232                 close $fd;
1233         }
1234
1235         open my $fd, "-|", "/usr/bin/diff -u -p -L \'$from_name\' -L \'$to_name\' $from_tmp $to_tmp";
1236         if ($format eq "plain") {
1237                 undef $/;
1238                 print <$fd>;
1239                 $/ = "\n";
1240         } else {
1241                 while (my $line = <$fd>) {
1242                         chomp $line;
1243                         my $char = substr($line, 0, 1);
1244                         my $diff_class = "";
1245                         if ($char eq '+') {
1246                                 $diff_class = " add";
1247                         } elsif ($char eq "-") {
1248                                 $diff_class = " rem";
1249                         } elsif ($char eq "@") {
1250                                 $diff_class = " chunk_header";
1251                         } elsif ($char eq "\\") {
1252                                 # skip errors
1253                                 next;
1254                         }
1255                         while ((my $pos = index($line, "\t")) != -1) {
1256                                 if (my $count = (8 - (($pos-1) % 8))) {
1257                                         my $spaces = ' ' x $count;
1258                                         $line =~ s/\t/$spaces/;
1259                                 }
1260                         }
1261                         print "<div class=\"diff$diff_class\">" . esc_html($line) . "</div>\n";
1262                 }
1263         }
1264         close $fd;
1265
1266         if (defined $from) {
1267                 unlink($from_tmp);
1268         }
1269         if (defined $to) {
1270                 unlink($to_tmp);
1271         }
1272 }
1273
1274
1275 ## ======================================================================
1276 ## ======================================================================
1277 ## actions
1278
1279 # git-logo (cached in browser for one day)
1280 sub git_logo {
1281         binmode STDOUT, ':raw';
1282         print $cgi->header(-type => 'image/png', -expires => '+1d');
1283         # cat git-logo.png | hexdump -e '16/1 " %02x"  "\n"' | sed 's/ /\\x/g'
1284         print   "\x89\x50\x4e\x47\x0d\x0a\x1a\x0a\x00\x00\x00\x0d\x49\x48\x44\x52" .
1285                 "\x00\x00\x00\x48\x00\x00\x00\x1b\x04\x03\x00\x00\x00\x2d\xd9\xd4" .
1286                 "\x2d\x00\x00\x00\x18\x50\x4c\x54\x45\xff\xff\xff\x60\x60\x5d\xb0" .
1287                 "\xaf\xaa\x00\x80\x00\xce\xcd\xc7\xc0\x00\x00\xe8\xe8\xe6\xf7\xf7" .
1288                 "\xf6\x95\x0c\xa7\x47\x00\x00\x00\x73\x49\x44\x41\x54\x28\xcf\x63" .
1289                 "\x48\x67\x20\x04\x4a\x5c\x18\x0a\x08\x2a\x62\x53\x61\x20\x02\x08" .
1290                 "\x0d\x69\x45\xac\xa1\xa1\x01\x30\x0c\x93\x60\x36\x26\x52\x91\xb1" .
1291                 "\x01\x11\xd6\xe1\x55\x64\x6c\x6c\xcc\x6c\x6c\x0c\xa2\x0c\x70\x2a" .
1292                 "\x62\x06\x2a\xc1\x62\x1d\xb3\x01\x02\x53\xa4\x08\xe8\x00\x03\x18" .
1293                 "\x26\x56\x11\xd4\xe1\x20\x97\x1b\xe0\xb4\x0e\x35\x24\x71\x29\x82" .
1294                 "\x99\x30\xb8\x93\x0a\x11\xb9\x45\x88\xc1\x8d\xa0\xa2\x44\x21\x06" .
1295                 "\x27\x41\x82\x40\x85\xc1\x45\x89\x20\x70\x01\x00\xa4\x3d\x21\xc5" .
1296                 "\x12\x1c\x9a\xfe\x00\x00\x00\x00\x49\x45\x4e\x44\xae\x42\x60\x82";
1297 }
1298
1299 sub git_project_list {
1300         my @list = git_read_projects();
1301         my @projects;
1302         if (!@list) {
1303                 die_error(undef, "No project found.");
1304         }
1305         foreach my $pr (@list) {
1306                 my $head = git_read_head($pr->{'path'});
1307                 if (!defined $head) {
1308                         next;
1309                 }
1310                 $ENV{'GIT_DIR'} = "$projectroot/$pr->{'path'}";
1311                 my %co = git_read_commit($head);
1312                 if (!%co) {
1313                         next;
1314                 }
1315                 $pr->{'commit'} = \%co;
1316                 if (!defined $pr->{'descr'}) {
1317                         my $descr = git_read_description($pr->{'path'}) || "";
1318                         $pr->{'descr'} = chop_str($descr, 25, 5);
1319                 }
1320                 if (!defined $pr->{'owner'}) {
1321                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
1322                 }
1323                 push @projects, $pr;
1324         }
1325         git_header_html();
1326         if (-f $home_text) {
1327                 print "<div class=\"index_include\">\n";
1328                 open (my $fd, $home_text);
1329                 print <$fd>;
1330                 close $fd;
1331                 print "</div>\n";
1332         }
1333         print "<table class=\"project_list\">\n" .
1334               "<tr>\n";
1335         if (!defined($order) || (defined($order) && ($order eq "project"))) {
1336                 @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
1337                 print "<th>Project</th>\n";
1338         } else {
1339                 print "<th>" . $cgi->a({-class => "header", -href => "$my_uri?" . esc_param("o=project")}, "Project") . "</th>\n";
1340         }
1341         if (defined($order) && ($order eq "descr")) {
1342                 @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
1343                 print "<th>Description</th>\n";
1344         } else {
1345                 print "<th>" . $cgi->a({-class => "header", -href => "$my_uri?" . esc_param("o=descr")}, "Description") . "</th>\n";
1346         }
1347         if (defined($order) && ($order eq "owner")) {
1348                 @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
1349                 print "<th>Owner</th>\n";
1350         } else {
1351                 print "<th>" . $cgi->a({-class => "header", -href => "$my_uri?" . esc_param("o=owner")}, "Owner") . "</th>\n";
1352         }
1353         if (defined($order) && ($order eq "age")) {
1354                 @projects = sort {$a->{'commit'}{'age'} <=> $b->{'commit'}{'age'}} @projects;
1355                 print "<th>Last Change</th>\n";
1356         } else {
1357                 print "<th>" . $cgi->a({-class => "header", -href => "$my_uri?" . esc_param("o=age")}, "Last Change") . "</th>\n";
1358         }
1359         print "<th></th>\n" .
1360               "</tr>\n";
1361         my $alternate = 0;
1362         foreach my $pr (@projects) {
1363                 if ($alternate) {
1364                         print "<tr class=\"dark\">\n";
1365                 } else {
1366                         print "<tr class=\"light\">\n";
1367                 }
1368                 $alternate ^= 1;
1369                 print "<td>" . $cgi->a({-href => "$my_uri?" . esc_param("p=$pr->{'path'};a=summary"), -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
1370                       "<td>" . esc_html($pr->{'descr'}) . "</td>\n" .
1371                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
1372                 print "<td class=\"". age_class($pr->{'commit'}{'age'}) . "\">" . $pr->{'commit'}{'age_string'} . "</td>\n" .
1373                       "<td class=\"link\">" .
1374                       $cgi->a({-href => "$my_uri?" . esc_param("p=$pr->{'path'};a=summary")}, "summary") .
1375                       " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$pr->{'path'};a=shortlog")}, "shortlog") .
1376                       " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$pr->{'path'};a=log")}, "log") .
1377                       "</td>\n" .
1378                       "</tr>\n";
1379         }
1380         print "</table>\n";
1381         git_footer_html();
1382 }
1383
1384 sub git_summary {
1385         my $descr = git_read_description($project) || "none";
1386         my $head = git_read_head($project);
1387         my %co = git_read_commit($head);
1388         my %cd = date_str($co{'committer_epoch'}, $co{'committer_tz'});
1389
1390         my $owner;
1391         if (-f $projects_list) {
1392                 open (my $fd , $projects_list);
1393                 while (my $line = <$fd>) {
1394                         chomp $line;
1395                         my ($pr, $ow) = split ' ', $line;
1396                         $pr = unescape($pr);
1397                         $ow = unescape($ow);
1398                         if ($pr eq $project) {
1399                                 $owner = decode("utf8", $ow, Encode::FB_DEFAULT);
1400                                 last;
1401                         }
1402                 }
1403                 close $fd;
1404         }
1405         if (!defined $owner) {
1406                 $owner = get_file_owner("$projectroot/$project");
1407         }
1408
1409         my $refs = read_info_ref();
1410         git_header_html();
1411         git_page_nav('summary','', $head);
1412
1413         print "<div class=\"title\">&nbsp;</div>\n";
1414         print "<table cellspacing=\"0\">\n" .
1415               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
1416               "<tr><td>owner</td><td>$owner</td></tr>\n" .
1417               "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n" .
1418               "</table>\n";
1419
1420         open my $fd, "-|", $GIT, "rev-list", "--max-count=17", git_read_head($project)
1421                 or die_error(undef, "Open git-rev-list failed.");
1422         my @revlist = map { chomp; $_ } <$fd>;
1423         close $fd;
1424         git_header_div('shortlog');
1425         git_shortlog_body(\@revlist, 0, 15, $refs,
1426                           $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog")}, "..."));
1427
1428         my $taglist = git_read_refs("refs/tags");
1429         if (defined @$taglist) {
1430                 git_header_div('tags');
1431                 git_tags_body($taglist, 0, 15,
1432                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tags")}, "..."));
1433         }
1434
1435         my $headlist = git_read_refs("refs/heads");
1436         if (defined @$headlist) {
1437                 git_header_div('heads');
1438                 git_heads_body($headlist, $head, 0, 15,
1439                                $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=heads")}, "..."));
1440         }
1441
1442         git_footer_html();
1443 }
1444
1445 sub git_tag {
1446         my $head = git_read_head($project);
1447         git_header_html();
1448         git_page_nav('','', $head,undef,$head);
1449         my %tag = git_read_tag($hash);
1450         git_header_div('commit', esc_html($tag{'name'}), $hash);
1451         print "<div class=\"title_text\">\n" .
1452               "<table cellspacing=\"0\">\n" .
1453               "<tr>\n" .
1454               "<td>object</td>\n" .
1455               "<td>" . $cgi->a({-class => "list", -href => "$my_uri?" . esc_param("p=$project;a=$tag{'type'};h=$tag{'object'}")}, $tag{'object'}) . "</td>\n" .
1456               "<td class=\"link\">" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$tag{'type'};h=$tag{'object'}")}, $tag{'type'}) . "</td>\n" .
1457               "</tr>\n";
1458         if (defined($tag{'author'})) {
1459                 my %ad = date_str($tag{'epoch'}, $tag{'tz'});
1460                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
1461                 print "<tr><td></td><td>" . $ad{'rfc2822'} . sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) . "</td></tr>\n";
1462         }
1463         print "</table>\n\n" .
1464               "</div>\n";
1465         print "<div class=\"page_body\">";
1466         my $comment = $tag{'comment'};
1467         foreach my $line (@$comment) {
1468                 print esc_html($line) . "<br/>\n";
1469         }
1470         print "</div>\n";
1471         git_footer_html();
1472 }
1473
1474 sub git_blame2 {
1475         my $fd;
1476         my $ftype;
1477         die_error(undef, "Permission denied.") if (!git_get_project_config_bool ('blame'));
1478         die_error('404 Not Found', "File name not defined") if (!$file_name);
1479         $hash_base ||= git_read_head($project);
1480         die_error(undef, "Reading commit failed") unless ($hash_base);
1481         my %co = git_read_commit($hash_base)
1482                 or die_error(undef, "Reading commit failed");
1483         if (!defined $hash) {
1484                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
1485                         or die_error(undef, "Error looking up file");
1486         }
1487         $ftype = git_get_type($hash);
1488         if ($ftype !~ "blob") {
1489                 die_error("400 Bad Request", "object is not a blob");
1490         }
1491         open ($fd, "-|", $GIT, "blame", '-l', $file_name, $hash_base)
1492                 or die_error(undef, "Open git-blame failed.");
1493         git_header_html();
1494         my $formats_nav =
1495                 $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$hash;hb=$hash_base;f=$file_name")}, "blob") .
1496                 " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blame;f=$file_name")}, "head");
1497         git_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
1498         git_header_div('commit', esc_html($co{'title'}), $hash_base);
1499         git_print_page_path($file_name, $ftype);
1500         my @rev_color = (qw(light dark));
1501         my $num_colors = scalar(@rev_color);
1502         my $current_color = 0;
1503         my $last_rev;
1504         print "<div class=\"page_body\">\n";
1505         print "<table class=\"blame\">\n";
1506         print "<tr><th>Commit</th><th>Line</th><th>Data</th></tr>\n";
1507         while (<$fd>) {
1508                 /^([0-9a-fA-F]{40}).*?(\d+)\)\s{1}(\s*.*)/;
1509                 my $full_rev = $1;
1510                 my $rev = substr($full_rev, 0, 8);
1511                 my $lineno = $2;
1512                 my $data = $3;
1513
1514                 if (!defined $last_rev) {
1515                         $last_rev = $full_rev;
1516                 } elsif ($last_rev ne $full_rev) {
1517                         $last_rev = $full_rev;
1518                         $current_color = ++$current_color % $num_colors;
1519                 }
1520                 print "<tr class=\"$rev_color[$current_color]\">\n";
1521                 print "<td class=\"sha1\">" .
1522                         $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$full_rev;f=$file_name")}, esc_html($rev)) . "</td>\n";
1523                 print "<td class=\"linenr\"><a id=\"l$lineno\" href=\"#l$lineno\" class=\"linenr\">" . esc_html($lineno) . "</a></td>\n";
1524                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
1525                 print "</tr>\n";
1526         }
1527         print "</table>\n";
1528         print "</div>";
1529         close $fd or print "Reading blob failed\n";
1530         git_footer_html();
1531 }
1532
1533 sub git_blame {
1534         my $fd;
1535         die_error('403 Permission denied', "Permission denied.") if (!git_get_project_config_bool ('blame'));
1536         die_error('404 Not Found', "What file will it be, master?") if (!$file_name);
1537         $hash_base ||= git_read_head($project);
1538         die_error(undef, "Reading commit failed.") unless ($hash_base);
1539         my %co = git_read_commit($hash_base)
1540                 or die_error(undef, "Reading commit failed.");
1541         if (!defined $hash) {
1542                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
1543                         or die_error(undef, "Error lookup file.");
1544         }
1545         open ($fd, "-|", $GIT, "annotate", '-l', '-t', '-r', $file_name, $hash_base)
1546                 or die_error(undef, "Open git-annotate failed.");
1547         git_header_html();
1548         my $formats_nav =
1549                 $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$hash;hb=$hash_base;f=$file_name")}, "blob") .
1550                 " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blame;f=$file_name")}, "head");
1551         git_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
1552         git_header_div('commit', esc_html($co{'title'}), $hash_base);
1553         git_print_page_path($file_name, 'blob');
1554         print "<div class=\"page_body\">\n";
1555         print <<HTML;
1556 <table class="blame">
1557   <tr>
1558     <th>Commit</th>
1559     <th>Age</th>
1560     <th>Author</th>
1561     <th>Line</th>
1562     <th>Data</th>
1563   </tr>
1564 HTML
1565         my @line_class = (qw(light dark));
1566         my $line_class_len = scalar (@line_class);
1567         my $line_class_num = $#line_class;
1568         while (my $line = <$fd>) {
1569                 my $long_rev;
1570                 my $short_rev;
1571                 my $author;
1572                 my $time;
1573                 my $lineno;
1574                 my $data;
1575                 my $age;
1576                 my $age_str;
1577                 my $age_class;
1578
1579                 chomp $line;
1580                 $line_class_num = ($line_class_num + 1) % $line_class_len;
1581
1582                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) \+\d\d\d\d\t(\d+)\)(.*)$/) {
1583                         $long_rev = $1;
1584                         $author   = $2;
1585                         $time     = $3;
1586                         $lineno   = $4;
1587                         $data     = $5;
1588                 } else {
1589                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
1590                         next;
1591                 }
1592                 $short_rev  = substr ($long_rev, 0, 8);
1593                 $age        = time () - $time;
1594                 $age_str    = age_string ($age);
1595                 $age_str    =~ s/ /&nbsp;/g;
1596                 $age_class  = age_class($age);
1597                 $author     = esc_html ($author);
1598                 $author     =~ s/ /&nbsp;/g;
1599                 # escape tabs
1600                 while ((my $pos = index($data, "\t")) != -1) {
1601                         if (my $count = (8 - ($pos % 8))) {
1602                                 my $spaces = ' ' x $count;
1603                                 $data =~ s/\t/$spaces/;
1604                         }
1605                 }
1606                 $data = esc_html ($data);
1607
1608                 print <<HTML;
1609   <tr class="$line_class[$line_class_num]">
1610     <td class="sha1"><a href="$my_uri?${\esc_param ("p=$project;a=commit;h=$long_rev")}" class="text">$short_rev..</a></td>
1611     <td class="$age_class">$age_str</td>
1612     <td>$author</td>
1613     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
1614     <td class="pre">$data</td>
1615   </tr>
1616 HTML
1617         } # while (my $line = <$fd>)
1618         print "</table>\n\n";
1619         close $fd or print "Reading blob failed.\n";
1620         print "</div>";
1621         git_footer_html();
1622 }
1623
1624 sub git_tags {
1625         my $head = git_read_head($project);
1626         git_header_html();
1627         git_page_nav('','', $head,undef,$head);
1628         git_header_div('summary', $project);
1629
1630         my $taglist = git_read_refs("refs/tags");
1631         if (defined @$taglist) {
1632                 git_tags_body($taglist);
1633         }
1634         git_footer_html();
1635 }
1636
1637 sub git_heads {
1638         my $head = git_read_head($project);
1639         git_header_html();
1640         git_page_nav('','', $head,undef,$head);
1641         git_header_div('summary', $project);
1642
1643         my $taglist = git_read_refs("refs/heads");
1644         my $alternate = 0;
1645         if (defined @$taglist) {
1646                 git_heads_body($taglist, $head);
1647         }
1648         git_footer_html();
1649 }
1650
1651 sub git_blob_plain {
1652         if (!defined $hash) {
1653                 if (defined $file_name) {
1654                         my $base = $hash_base || git_read_head($project);
1655                         $hash = git_get_hash_by_path($base, $file_name, "blob")
1656                                 or die_error(undef, "Error lookup file.");
1657                 } else {
1658                         die_error(undef, "No file name defined.");
1659                 }
1660         }
1661         my $type = shift;
1662         open my $fd, "-|", $GIT, "cat-file", "blob", $hash
1663                 or die_error("Couldn't cat $file_name, $hash");
1664
1665         $type ||= git_blob_plain_mimetype($fd, $file_name);
1666
1667         # save as filename, even when no $file_name is given
1668         my $save_as = "$hash";
1669         if (defined $file_name) {
1670                 $save_as = $file_name;
1671         } elsif ($type =~ m/^text\//) {
1672                 $save_as .= '.txt';
1673         }
1674
1675         print $cgi->header(-type => "$type", '-content-disposition' => "inline; filename=\"$save_as\"");
1676         undef $/;
1677         binmode STDOUT, ':raw';
1678         print <$fd>;
1679         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
1680         $/ = "\n";
1681         close $fd;
1682 }
1683
1684 sub git_blob {
1685         if (!defined $hash) {
1686                 if (defined $file_name) {
1687                         my $base = $hash_base || git_read_head($project);
1688                         $hash = git_get_hash_by_path($base, $file_name, "blob")
1689                                 or die_error(undef, "Error lookup file.");
1690                 } else {
1691                         die_error(undef, "No file name defined.");
1692                 }
1693         }
1694         my $have_blame = git_get_project_config_bool ('blame');
1695         open my $fd, "-|", $GIT, "cat-file", "blob", $hash
1696                 or die_error(undef, "Couldn't cat $file_name, $hash.");
1697         my $mimetype = git_blob_plain_mimetype($fd, $file_name);
1698         if ($mimetype !~ m/^text\//) {
1699                 close $fd;
1700                 return git_blob_plain($mimetype);
1701         }
1702         git_header_html();
1703         my $formats_nav = '';
1704         if (defined $hash_base && (my %co = git_read_commit($hash_base))) {
1705                 if (defined $file_name) {
1706                         if ($have_blame) {
1707                                 $formats_nav .= $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blame;h=$hash;hb=$hash_base;f=$file_name")}, "blame") . " | ";
1708                         }
1709                         $formats_nav .=
1710                                 $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob_plain;h=$hash;f=$file_name")}, "plain") .
1711                                 " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;hb=HEAD;f=$file_name")}, "head");
1712                 } else {
1713                         $formats_nav .= $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob_plain;h=$hash")}, "plain");
1714                 }
1715                 git_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
1716                 git_header_div('commit', esc_html($co{'title'}), $hash_base);
1717         } else {
1718                 print "<div class=\"page_nav\">\n" .
1719                       "<br/><br/></div>\n" .
1720                       "<div class=\"title\">$hash</div>\n";
1721         }
1722         git_print_page_path($file_name, "blob");
1723         print "<div class=\"page_body\">\n";
1724         my $nr;
1725         while (my $line = <$fd>) {
1726                 chomp $line;
1727                 $nr++;
1728                 while ((my $pos = index($line, "\t")) != -1) {
1729                         if (my $count = (8 - ($pos % 8))) {
1730                                 my $spaces = ' ' x $count;
1731                                 $line =~ s/\t/$spaces/;
1732                         }
1733                 }
1734                 printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n", $nr, $nr, $nr, esc_html($line);
1735         }
1736         close $fd or print "Reading blob failed.\n";
1737         print "</div>";
1738         git_footer_html();
1739 }
1740
1741 sub git_tree {
1742         if (!defined $hash) {
1743                 $hash = git_read_head($project);
1744                 if (defined $file_name) {
1745                         my $base = $hash_base || $hash;
1746                         $hash = git_get_hash_by_path($base, $file_name, "tree");
1747                 }
1748                 if (!defined $hash_base) {
1749                         $hash_base = $hash;
1750                 }
1751         }
1752         $/ = "\0";
1753         open my $fd, "-|", $GIT, "ls-tree", '-z', $hash
1754                 or die_error(undef, "Open git-ls-tree failed.");
1755         my @entries = map { chomp; $_ } <$fd>;
1756         close $fd or die_error(undef, "Reading tree failed.");
1757         $/ = "\n";
1758
1759         my $refs = read_info_ref();
1760         my $ref = git_get_referencing($refs, $hash_base);
1761         git_header_html();
1762         my $base_key = "";
1763         my $base = "";
1764         if (defined $hash_base && (my %co = git_read_commit($hash_base))) {
1765                 $base_key = ";hb=$hash_base";
1766                 git_page_nav('tree','', $hash_base);
1767                 git_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
1768         } else {
1769                 print "<div class=\"page_nav\">\n";
1770                 print "<br/><br/></div>\n";
1771                 print "<div class=\"title\">$hash</div>\n";
1772         }
1773         if (defined $file_name) {
1774                 $base = esc_html("$file_name/");
1775         }
1776         git_print_page_path($file_name, 'tree');
1777         print "<div class=\"page_body\">\n";
1778         print "<table cellspacing=\"0\">\n";
1779         my $alternate = 0;
1780         foreach my $line (@entries) {
1781                 #'100644        blob    0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa        panic.c'
1782                 $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/;
1783                 my $t_mode = $1;
1784                 my $t_type = $2;
1785                 my $t_hash = $3;
1786                 my $t_name = validate_input($4);
1787                 if ($alternate) {
1788                         print "<tr class=\"dark\">\n";
1789                 } else {
1790                         print "<tr class=\"light\">\n";
1791                 }
1792                 $alternate ^= 1;
1793                 print "<td class=\"mode\">" . mode_str($t_mode) . "</td>\n";
1794                 if ($t_type eq "blob") {
1795                         print "<td class=\"list\">" .
1796                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$t_hash$base_key;f=$base$t_name"), -class => "list"}, esc_html($t_name)) .
1797                               "</td>\n" .
1798                               "<td class=\"link\">" .
1799                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$t_hash$base_key;f=$base$t_name")}, "blob") .
1800 #                             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blame;h=$t_hash$base_key;f=$base$t_name")}, "blame") .
1801                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=history;h=$t_hash;hb=$hash_base;f=$base$t_name")}, "history") .
1802                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob_plain;h=$t_hash;f=$base$t_name")}, "raw") .
1803                               "</td>\n";
1804                 } elsif ($t_type eq "tree") {
1805                         print "<td class=\"list\">" .
1806                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$t_hash$base_key;f=$base$t_name")}, esc_html($t_name)) .
1807                               "</td>\n" .
1808                               "<td class=\"link\">" .
1809                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$t_hash$base_key;f=$base$t_name")}, "tree") .
1810                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=history;hb=$hash_base;f=$base$t_name")}, "history") .
1811                               "</td>\n";
1812                 }
1813                 print "</tr>\n";
1814         }
1815         print "</table>\n" .
1816               "</div>";
1817         git_footer_html();
1818 }
1819
1820 sub git_log {
1821         my $head = git_read_head($project);
1822         if (!defined $hash) {
1823                 $hash = $head;
1824         }
1825         if (!defined $page) {
1826                 $page = 0;
1827         }
1828         my $refs = read_info_ref();
1829
1830         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
1831         open my $fd, "-|", $GIT, "rev-list", $limit, $hash
1832                 or die_error(undef, "Open git-rev-list failed.");
1833         my @revlist = map { chomp; $_ } <$fd>;
1834         close $fd;
1835
1836         my $paging_nav = git_get_paging_nav('log', $hash, $head, $page, $#revlist);
1837
1838         git_header_html();
1839         git_page_nav('log','', $hash,undef,undef, $paging_nav);
1840
1841         if (!@revlist) {
1842                 my %co = git_read_commit($hash);
1843
1844                 git_header_div('summary', $project);
1845                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
1846         }
1847         for (my $i = ($page * 100); $i <= $#revlist; $i++) {
1848                 my $commit = $revlist[$i];
1849                 my $ref = git_get_referencing($refs, $commit);
1850                 my %co = git_read_commit($commit);
1851                 next if !%co;
1852                 my %ad = date_str($co{'author_epoch'});
1853                 git_header_div('commit',
1854                                                                          "<span class=\"age\">$co{'age_string'}</span>" .
1855                                                                          esc_html($co{'title'}) . $ref,
1856                                                                          $commit);
1857                 print "<div class=\"title_text\">\n" .
1858                       "<div class=\"log_link\">\n" .
1859                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit")}, "commit") .
1860                       " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff;h=$commit")}, "commitdiff") .
1861                       "<br/>\n" .
1862                       "</div>\n" .
1863                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
1864                       "</div>\n" .
1865                       "<div class=\"log_body\">\n";
1866                 my $comment = $co{'comment'};
1867                 my $empty = 0;
1868                 foreach my $line (@$comment) {
1869                         if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
1870                                 next;
1871                         }
1872                         if ($line eq "") {
1873                                 if ($empty) {
1874                                         next;
1875                                 }
1876                                 $empty = 1;
1877                         } else {
1878                                 $empty = 0;
1879                         }
1880                         print format_log_line_html($line) . "<br/>\n";
1881                 }
1882                 if (!$empty) {
1883                         print "<br/>\n";
1884                 }
1885                 print "</div>\n";
1886         }
1887         git_footer_html();
1888 }
1889
1890 sub git_commit {
1891         my %co = git_read_commit($hash);
1892         if (!%co) {
1893                 die_error(undef, "Unknown commit object.");
1894         }
1895         my %ad = date_str($co{'author_epoch'}, $co{'author_tz'});
1896         my %cd = date_str($co{'committer_epoch'}, $co{'committer_tz'});
1897
1898         my $parent = $co{'parent'};
1899         if (!defined $parent) {
1900                 $parent = "--root";
1901         }
1902         open my $fd, "-|", $GIT, "diff-tree", '-r', '-M', $parent, $hash
1903                 or die_error(undef, "Open git-diff-tree failed.");
1904         my @difftree = map { chomp; $_ } <$fd>;
1905         close $fd or die_error(undef, "Reading git-diff-tree failed.");
1906
1907         # non-textual hash id's can be cached
1908         my $expires;
1909         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
1910                 $expires = "+1d";
1911         }
1912         my $refs = read_info_ref();
1913         my $ref = git_get_referencing($refs, $co{'id'});
1914         my $formats_nav = '';
1915         if (defined $file_name && defined $co{'parent'}) {
1916                 my $parent = $co{'parent'};
1917                 $formats_nav .= $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blame;hb=$parent;f=$file_name")}, "blame");
1918         }
1919         git_header_html(undef, $expires);
1920         git_page_nav('commit', defined $co{'parent'} ? '' : 'commitdiff',
1921                                                          $hash, $co{'tree'}, $hash,
1922                                                          $formats_nav);
1923
1924         if (defined $co{'parent'}) {
1925                 git_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
1926         } else {
1927                 git_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
1928         }
1929         print "<div class=\"title_text\">\n" .
1930               "<table cellspacing=\"0\">\n";
1931         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
1932               "<tr>" .
1933               "<td></td><td> $ad{'rfc2822'}";
1934         if ($ad{'hour_local'} < 6) {
1935                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1936         } else {
1937                 printf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1938         }
1939         print "</td>" .
1940               "</tr>\n";
1941         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
1942         print "<tr><td></td><td> $cd{'rfc2822'}" . sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) . "</td></tr>\n";
1943         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
1944         print "<tr>" .
1945               "<td>tree</td>" .
1946               "<td class=\"sha1\">" .
1947               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$co{'tree'};hb=$hash"), class => "list"}, $co{'tree'}) .
1948               "</td>" .
1949               "<td class=\"link\">" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$co{'tree'};hb=$hash")}, "tree") .
1950               "</td>" .
1951               "</tr>\n";
1952         my $parents = $co{'parents'};
1953         foreach my $par (@$parents) {
1954                 print "<tr>" .
1955                       "<td>parent</td>" .
1956                       "<td class=\"sha1\">" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$par"), class => "list"}, $par) . "</td>" .
1957                       "<td class=\"link\">" .
1958                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$par")}, "commit") .
1959                       " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff;h=$hash;hp=$par")}, "commitdiff") .
1960                       "</td>" .
1961                       "</tr>\n";
1962         }
1963         print "</table>".
1964               "</div>\n";
1965         print "<div class=\"page_body\">\n";
1966         my $comment = $co{'comment'};
1967         my $empty = 0;
1968         my $signed = 0;
1969         foreach my $line (@$comment) {
1970                 # print only one empty line
1971                 if ($line eq "") {
1972                         if ($empty || $signed) {
1973                                 next;
1974                         }
1975                         $empty = 1;
1976                 } else {
1977                         $empty = 0;
1978                 }
1979                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
1980                         $signed = 1;
1981                         print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
1982                 } else {
1983                         $signed = 0;
1984                         print format_log_line_html($line) . "<br/>\n";
1985                 }
1986         }
1987         print "</div>\n";
1988         print "<div class=\"list_head\">\n";
1989         if ($#difftree > 10) {
1990                 print(($#difftree + 1) . " files changed:\n");
1991         }
1992         print "</div>\n";
1993         print "<table class=\"diff_tree\">\n";
1994         my $alternate = 0;
1995         foreach my $line (@difftree) {
1996                 # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M      ls-files.c'
1997                 # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M      rev-tree.c'
1998                 if (!($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/)) {
1999                         next;
2000                 }
2001                 my $from_mode = $1;
2002                 my $to_mode = $2;
2003                 my $from_id = $3;
2004                 my $to_id = $4;
2005                 my $status = $5;
2006                 my $similarity = $6;
2007                 my $file = validate_input(unquote($7));
2008                 if ($alternate) {
2009                         print "<tr class=\"dark\">\n";
2010                 } else {
2011                         print "<tr class=\"light\">\n";
2012                 }
2013                 $alternate ^= 1;
2014                 if ($status eq "A") {
2015                         my $mode_chng = "";
2016                         if (S_ISREG(oct $to_mode)) {
2017                                 $mode_chng = sprintf(" with mode: %04o", (oct $to_mode) & 0777);
2018                         }
2019                         print "<td>" .
2020                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$file"), -class => "list"}, esc_html($file)) . "</td>\n" .
2021                               "<td><span class=\"file_status new\">[new " . file_type($to_mode) . "$mode_chng]</span></td>\n" .
2022                               "<td class=\"link\">" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$file")}, "blob") . "</td>\n";
2023                 } elsif ($status eq "D") {
2024                         print "<td>" .
2025                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$from_id;hb=$hash;f=$file"), -class => "list"}, esc_html($file)) . "</td>\n" .
2026                               "<td><span class=\"file_status deleted\">[deleted " . file_type($from_mode). "]</span></td>\n" .
2027                               "<td class=\"link\">" .
2028                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$from_id;hb=$hash;f=$file")}, "blob") .
2029                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=history;hb=$hash;f=$file")}, "history") .
2030                               "</td>\n"
2031                 } elsif ($status eq "M" || $status eq "T") {
2032                         my $mode_chnge = "";
2033                         if ($from_mode != $to_mode) {
2034                                 $mode_chnge = " <span class=\"file_status mode_chnge\">[changed";
2035                                 if (((oct $from_mode) & S_IFMT) != ((oct $to_mode) & S_IFMT)) {
2036                                         $mode_chnge .= " from " . file_type($from_mode) . " to " . file_type($to_mode);
2037                                 }
2038                                 if (((oct $from_mode) & 0777) != ((oct $to_mode) & 0777)) {
2039                                         if (S_ISREG($from_mode) && S_ISREG($to_mode)) {
2040                                                 $mode_chnge .= sprintf(" mode: %04o->%04o", (oct $from_mode) & 0777, (oct $to_mode) & 0777);
2041                                         } elsif (S_ISREG($to_mode)) {
2042                                                 $mode_chnge .= sprintf(" mode: %04o", (oct $to_mode) & 0777);
2043                                         }
2044                                 }
2045                                 $mode_chnge .= "]</span>\n";
2046                         }
2047                         print "<td>";
2048                         if ($to_id ne $from_id) {
2049                                 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));
2050                         } else {
2051                                 print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$file"), -class => "list"}, esc_html($file));
2052                         }
2053                         print "</td>\n" .
2054                               "<td>$mode_chnge</td>\n" .
2055                               "<td class=\"link\">";
2056                         print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$file")}, "blob");
2057                         if ($to_id ne $from_id) {
2058                                 print " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blobdiff;h=$to_id;hp=$from_id;hb=$hash;f=$file")}, "diff");
2059                         }
2060                         print " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=history;hb=$hash;f=$file")}, "history") . "\n";
2061                         print "</td>\n";
2062                 } elsif ($status eq "R") {
2063                         my ($from_file, $to_file) = split "\t", $file;
2064                         my $mode_chng = "";
2065                         if ($from_mode != $to_mode) {
2066                                 $mode_chng = sprintf(", mode: %04o", (oct $to_mode) & 0777);
2067                         }
2068                         print "<td>" .
2069                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$to_file"), -class => "list"}, esc_html($to_file)) . "</td>\n" .
2070                               "<td><span class=\"file_status moved\">[moved from " .
2071                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$from_id;hb=$hash;f=$from_file"), -class => "list"}, esc_html($from_file)) .
2072                               " with " . (int $similarity) . "% similarity$mode_chng]</span></td>\n" .
2073                               "<td class=\"link\">" .
2074                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$to_file")}, "blob");
2075                         if ($to_id ne $from_id) {
2076                                 print " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blobdiff;h=$to_id;hp=$from_id;hb=$hash;f=$to_file")}, "diff");
2077                         }
2078                         print "</td>\n";
2079                 }
2080                 print "</tr>\n";
2081         }
2082         print "</table>\n";
2083         git_footer_html();
2084 }
2085
2086 sub git_blobdiff {
2087         mkdir($git_temp, 0700);
2088         git_header_html();
2089         if (defined $hash_base && (my %co = git_read_commit($hash_base))) {
2090                 my $formats_nav =
2091                         $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blobdiff_plain;h=$hash;hp=$hash_parent")}, "plain");
2092                 git_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2093                 git_header_div('commit', esc_html($co{'title'}), $hash_base);
2094         } else {
2095                 print "<div class=\"page_nav\">\n" .
2096                       "<br/><br/></div>\n" .
2097                       "<div class=\"title\">$hash vs $hash_parent</div>\n";
2098         }
2099         git_print_page_path($file_name, "blob");
2100         print "<div class=\"page_body\">\n" .
2101               "<div class=\"diff_info\">blob:" .
2102               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$hash_parent;hb=$hash_base;f=$file_name")}, $hash_parent) .
2103               " -> blob:" .
2104               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$hash;hb=$hash_base;f=$file_name")}, $hash) .
2105               "</div>\n";
2106         git_diff_print($hash_parent, $file_name || $hash_parent, $hash, $file_name || $hash);
2107         print "</div>";
2108         git_footer_html();
2109 }
2110
2111 sub git_blobdiff_plain {
2112         mkdir($git_temp, 0700);
2113         print $cgi->header(-type => "text/plain", -charset => 'utf-8');
2114         git_diff_print($hash_parent, $file_name || $hash_parent, $hash, $file_name || $hash, "plain");
2115 }
2116
2117 sub git_commitdiff {
2118         mkdir($git_temp, 0700);
2119         my %co = git_read_commit($hash);
2120         if (!%co) {
2121                 die_error(undef, "Unknown commit object.");
2122         }
2123         if (!defined $hash_parent) {
2124                 $hash_parent = $co{'parent'};
2125         }
2126         open my $fd, "-|", $GIT, "diff-tree", '-r', $hash_parent, $hash
2127                 or die_error(undef, "Open git-diff-tree failed.");
2128         my @difftree = map { chomp; $_ } <$fd>;
2129         close $fd or die_error(undef, "Reading diff-tree failed.");
2130
2131         # non-textual hash id's can be cached
2132         my $expires;
2133         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2134                 $expires = "+1d";
2135         }
2136         my $refs = read_info_ref();
2137         my $ref = git_get_referencing($refs, $co{'id'});
2138         my $formats_nav =
2139                 $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff_plain;h=$hash;hp=$hash_parent")}, "plain");
2140         git_header_html(undef, $expires);
2141         git_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
2142         git_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
2143         print "<div class=\"page_body\">\n";
2144         my $comment = $co{'comment'};
2145         my $empty = 0;
2146         my $signed = 0;
2147         my @log = @$comment;
2148         # remove first and empty lines after that
2149         shift @log;
2150         while (defined $log[0] && $log[0] eq "") {
2151                 shift @log;
2152         }
2153         foreach my $line (@log) {
2154                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2155                         next;
2156                 }
2157                 if ($line eq "") {
2158                         if ($empty) {
2159                                 next;
2160                         }
2161                         $empty = 1;
2162                 } else {
2163                         $empty = 0;
2164                 }
2165                 print format_log_line_html($line) . "<br/>\n";
2166         }
2167         print "<br/>\n";
2168         foreach my $line (@difftree) {
2169                 # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M      ls-files.c'
2170                 # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M      rev-tree.c'
2171                 $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/;
2172                 my $from_mode = $1;
2173                 my $to_mode = $2;
2174                 my $from_id = $3;
2175                 my $to_id = $4;
2176                 my $status = $5;
2177                 my $file = validate_input(unquote($6));
2178                 if ($status eq "A") {
2179                         print "<div class=\"diff_info\">" . file_type($to_mode) . ":" .
2180                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$file")}, $to_id) . "(new)" .
2181                               "</div>\n";
2182                         git_diff_print(undef, "/dev/null", $to_id, "b/$file");
2183                 } elsif ($status eq "D") {
2184                         print "<div class=\"diff_info\">" . file_type($from_mode) . ":" .
2185                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$from_id;hb=$hash;f=$file")}, $from_id) . "(deleted)" .
2186                               "</div>\n";
2187                         git_diff_print($from_id, "a/$file", undef, "/dev/null");
2188                 } elsif ($status eq "M") {
2189                         if ($from_id ne $to_id) {
2190                                 print "<div class=\"diff_info\">" .
2191                                       file_type($from_mode) . ":" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$from_id;hb=$hash;f=$file")}, $from_id) .
2192                                       " -> " .
2193                                       file_type($to_mode) . ":" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$file")}, $to_id);
2194                                 print "</div>\n";
2195                                 git_diff_print($from_id, "a/$file",  $to_id, "b/$file");
2196                         }
2197                 }
2198         }
2199         print "<br/>\n" .
2200               "</div>";
2201         git_footer_html();
2202 }
2203
2204 sub git_commitdiff_plain {
2205         mkdir($git_temp, 0700);
2206         open my $fd, "-|", $GIT, "diff-tree", '-r', $hash_parent, $hash
2207                 or die_error(undef, "Open git-diff-tree failed.");
2208         my @difftree = map { chomp; $_ } <$fd>;
2209         close $fd or die_error(undef, "Reading diff-tree failed.");
2210
2211         # try to figure out the next tag after this commit
2212         my $tagname;
2213         my $refs = read_info_ref("tags");
2214         open $fd, "-|", $GIT, "rev-list", "HEAD";
2215         my @commits = map { chomp; $_ } <$fd>;
2216         close $fd;
2217         foreach my $commit (@commits) {
2218                 if (defined $refs->{$commit}) {
2219                         $tagname = $refs->{$commit}
2220                 }
2221                 if ($commit eq $hash) {
2222                         last;
2223                 }
2224         }
2225
2226         print $cgi->header(-type => "text/plain", -charset => 'utf-8', '-content-disposition' => "inline; filename=\"git-$hash.patch\"");
2227         my %co = git_read_commit($hash);
2228         my %ad = date_str($co{'author_epoch'}, $co{'author_tz'});
2229         my $comment = $co{'comment'};
2230         print "From: $co{'author'}\n" .
2231               "Date: $ad{'rfc2822'} ($ad{'tz_local'})\n".
2232               "Subject: $co{'title'}\n";
2233         if (defined $tagname) {
2234                 print "X-Git-Tag: $tagname\n";
2235         }
2236         print "X-Git-Url: $my_url?p=$project;a=commitdiff;h=$hash\n" .
2237               "\n";
2238
2239         foreach my $line (@$comment) {;
2240                 print "$line\n";
2241         }
2242         print "---\n\n";
2243
2244         foreach my $line (@difftree) {
2245                 $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/;
2246                 my $from_id = $3;
2247                 my $to_id = $4;
2248                 my $status = $5;
2249                 my $file = $6;
2250                 if ($status eq "A") {
2251                         git_diff_print(undef, "/dev/null", $to_id, "b/$file", "plain");
2252                 } elsif ($status eq "D") {
2253                         git_diff_print($from_id, "a/$file", undef, "/dev/null", "plain");
2254                 } elsif ($status eq "M") {
2255                         git_diff_print($from_id, "a/$file",  $to_id, "b/$file", "plain");
2256                 }
2257         }
2258 }
2259
2260 sub git_history {
2261         if (!defined $hash_base) {
2262                 $hash_base = git_read_head($project);
2263         }
2264         my $ftype;
2265         my %co = git_read_commit($hash_base);
2266         if (!%co) {
2267                 die_error(undef, "Unknown commit object.");
2268         }
2269         my $refs = read_info_ref();
2270         git_header_html();
2271         git_page_nav('','', $hash_base,$co{'tree'},$hash_base);
2272         git_header_div('commit', esc_html($co{'title'}), $hash_base);
2273         if (!defined $hash && defined $file_name) {
2274                 $hash = git_get_hash_by_path($hash_base, $file_name);
2275         }
2276         if (defined $hash) {
2277                 $ftype = git_get_type($hash);
2278         }
2279         git_print_page_path($file_name, $ftype);
2280
2281         open my $fd, "-|",
2282                 $GIT, "rev-list", "--full-history", $hash_base, "--", $file_name;
2283         print "<table cellspacing=\"0\">\n";
2284         my $alternate = 0;
2285         while (my $line = <$fd>) {
2286                 if ($line =~ m/^([0-9a-fA-F]{40})/){
2287                         my $commit = $1;
2288                         my %co = git_read_commit($commit);
2289                         if (!%co) {
2290                                 next;
2291                         }
2292                         my $ref = git_get_referencing($refs, $commit);
2293                         if ($alternate) {
2294                                 print "<tr class=\"dark\">\n";
2295                         } else {
2296                                 print "<tr class=\"light\">\n";
2297                         }
2298                         $alternate ^= 1;
2299                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2300                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
2301                               "<td>" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit"), -class => "list"}, "<b>" .
2302                               esc_html(chop_str($co{'title'}, 50)) . "$ref</b>") . "</td>\n" .
2303                               "<td class=\"link\">" .
2304                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit")}, "commit") .
2305                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff;h=$commit")}, "commitdiff") .
2306                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$ftype;hb=$commit;f=$file_name")}, $ftype);
2307                         my $blob = git_get_hash_by_path($hash_base, $file_name);
2308                         my $blob_parent = git_get_hash_by_path($commit, $file_name);
2309                         if (defined $blob && defined $blob_parent && $blob ne $blob_parent) {
2310                                 print " | " .
2311                                 $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blobdiff;h=$blob;hp=$blob_parent;hb=$commit;f=$file_name")},
2312                                 "diff to current");
2313                         }
2314                         print "</td>\n" .
2315                               "</tr>\n";
2316                 }
2317         }
2318         print "</table>\n";
2319         close $fd;
2320         git_footer_html();
2321 }
2322
2323 sub git_search {
2324         if (!defined $searchtext) {
2325                 die_error("", "Text field empty.");
2326         }
2327         if (!defined $hash) {
2328                 $hash = git_read_head($project);
2329         }
2330         my %co = git_read_commit($hash);
2331         if (!%co) {
2332                 die_error(undef, "Unknown commit object.");
2333         }
2334         # pickaxe may take all resources of your box and run for several minutes
2335         # with every query - so decide by yourself how public you make this feature :)
2336         my $commit_search = 1;
2337         my $author_search = 0;
2338         my $committer_search = 0;
2339         my $pickaxe_search = 0;
2340         if ($searchtext =~ s/^author\\://i) {
2341                 $author_search = 1;
2342         } elsif ($searchtext =~ s/^committer\\://i) {
2343                 $committer_search = 1;
2344         } elsif ($searchtext =~ s/^pickaxe\\://i) {
2345                 $commit_search = 0;
2346                 $pickaxe_search = 1;
2347         }
2348         git_header_html();
2349         git_page_nav('','', $hash,$co{'tree'},$hash);
2350         git_header_div('commit', esc_html($co{'title'}), $hash);
2351
2352         print "<table cellspacing=\"0\">\n";
2353         my $alternate = 0;
2354         if ($commit_search) {
2355                 $/ = "\0";
2356                 open my $fd, "-|", $GIT, "rev-list", "--header", "--parents", $hash or next;
2357                 while (my $commit_text = <$fd>) {
2358                         if (!grep m/$searchtext/i, $commit_text) {
2359                                 next;
2360                         }
2361                         if ($author_search && !grep m/\nauthor .*$searchtext/i, $commit_text) {
2362                                 next;
2363                         }
2364                         if ($committer_search && !grep m/\ncommitter .*$searchtext/i, $commit_text) {
2365                                 next;
2366                         }
2367                         my @commit_lines = split "\n", $commit_text;
2368                         my %co = git_read_commit(undef, \@commit_lines);
2369                         if (!%co) {
2370                                 next;
2371                         }
2372                         if ($alternate) {
2373                                 print "<tr class=\"dark\">\n";
2374                         } else {
2375                                 print "<tr class=\"light\">\n";
2376                         }
2377                         $alternate ^= 1;
2378                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2379                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
2380                               "<td>" .
2381                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$co{'id'}"), -class => "list"}, "<b>" . esc_html(chop_str($co{'title'}, 50)) . "</b><br/>");
2382                         my $comment = $co{'comment'};
2383                         foreach my $line (@$comment) {
2384                                 if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
2385                                         my $lead = esc_html($1) || "";
2386                                         $lead = chop_str($lead, 30, 10);
2387                                         my $match = esc_html($2) || "";
2388                                         my $trail = esc_html($3) || "";
2389                                         $trail = chop_str($trail, 30, 10);
2390                                         my $text = "$lead<span class=\"match\">$match</span>$trail";
2391                                         print chop_str($text, 80, 5) . "<br/>\n";
2392                                 }
2393                         }
2394                         print "</td>\n" .
2395                               "<td class=\"link\">" .
2396                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$co{'id'}")}, "commit") .
2397                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$co{'tree'};hb=$co{'id'}")}, "tree");
2398                         print "</td>\n" .
2399                               "</tr>\n";
2400                 }
2401                 close $fd;
2402         }
2403
2404         if ($pickaxe_search) {
2405                 $/ = "\n";
2406                 open my $fd, "-|", "$GIT rev-list $hash | $GIT diff-tree -r --stdin -S\'$searchtext\'";
2407                 undef %co;
2408                 my @files;
2409                 while (my $line = <$fd>) {
2410                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
2411                                 my %set;
2412                                 $set{'file'} = $6;
2413                                 $set{'from_id'} = $3;
2414                                 $set{'to_id'} = $4;
2415                                 $set{'id'} = $set{'to_id'};
2416                                 if ($set{'id'} =~ m/0{40}/) {
2417                                         $set{'id'} = $set{'from_id'};
2418                                 }
2419                                 if ($set{'id'} =~ m/0{40}/) {
2420                                         next;
2421                                 }
2422                                 push @files, \%set;
2423                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
2424                                 if (%co) {
2425                                         if ($alternate) {
2426                                                 print "<tr class=\"dark\">\n";
2427                                         } else {
2428                                                 print "<tr class=\"light\">\n";
2429                                         }
2430                                         $alternate ^= 1;
2431                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2432                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
2433                                               "<td>" .
2434                                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$co{'id'}"), -class => "list"}, "<b>" .
2435                                               esc_html(chop_str($co{'title'}, 50)) . "</b><br/>");
2436                                         while (my $setref = shift @files) {
2437                                                 my %set = %$setref;
2438                                                 print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$set{'id'};hb=$co{'id'};f=$set{'file'}"), class => "list"},
2439                                                       "<span class=\"match\">" . esc_html($set{'file'}) . "</span>") .
2440                                                       "<br/>\n";
2441                                         }
2442                                         print "</td>\n" .
2443                                               "<td class=\"link\">" .
2444                                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$co{'id'}")}, "commit") .
2445                                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$co{'tree'};hb=$co{'id'}")}, "tree");
2446                                         print "</td>\n" .
2447                                               "</tr>\n";
2448                                 }
2449                                 %co = git_read_commit($1);
2450                         }
2451                 }
2452                 close $fd;
2453         }
2454         print "</table>\n";
2455         git_footer_html();
2456 }
2457
2458 sub git_shortlog {
2459         my $head = git_read_head($project);
2460         if (!defined $hash) {
2461                 $hash = $head;
2462         }
2463         if (!defined $page) {
2464                 $page = 0;
2465         }
2466         my $refs = read_info_ref();
2467
2468         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
2469         open my $fd, "-|", $GIT, "rev-list", $limit, $hash
2470                 or die_error(undef, "Open git-rev-list failed.");
2471         my @revlist = map { chomp; $_ } <$fd>;
2472         close $fd;
2473
2474         my $paging_nav = git_get_paging_nav('shortlog', $hash, $head, $page, $#revlist);
2475         my $next_link = '';
2476         if ($#revlist >= (100 * ($page+1)-1)) {
2477                 $next_link =
2478                         $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$hash;pg=" . ($page+1)),
2479                                  -title => "Alt-n"}, "next");
2480         }
2481
2482
2483         git_header_html();
2484         git_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
2485         git_header_div('summary', $project);
2486
2487         git_shortlog_body(\@revlist, ($page * 100), $#revlist, $refs, $next_link);
2488
2489         git_footer_html();
2490 }
2491
2492 ## ......................................................................
2493 ## feeds (RSS, OPML)
2494
2495 sub git_rss {
2496         # http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
2497         open my $fd, "-|", $GIT, "rev-list", "--max-count=150", git_read_head($project)
2498                 or die_error(undef, "Open git-rev-list failed.");
2499         my @revlist = map { chomp; $_ } <$fd>;
2500         close $fd or die_error(undef, "Reading rev-list failed.");
2501         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
2502         print "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n".
2503               "<rss version=\"2.0\" xmlns:content=\"http://purl.org/rss/1.0/modules/content/\">\n";
2504         print "<channel>\n";
2505         print "<title>$project</title>\n".
2506               "<link>" . esc_html("$my_url?p=$project;a=summary") . "</link>\n".
2507               "<description>$project log</description>\n".
2508               "<language>en</language>\n";
2509
2510         for (my $i = 0; $i <= $#revlist; $i++) {
2511                 my $commit = $revlist[$i];
2512                 my %co = git_read_commit($commit);
2513                 # we read 150, we always show 30 and the ones more recent than 48 hours
2514                 if (($i >= 20) && ((time - $co{'committer_epoch'}) > 48*60*60)) {
2515                         last;
2516                 }
2517                 my %cd = date_str($co{'committer_epoch'});
2518                 open $fd, "-|", $GIT, "diff-tree", '-r', $co{'parent'}, $co{'id'} or next;
2519                 my @difftree = map { chomp; $_ } <$fd>;
2520                 close $fd or next;
2521                 print "<item>\n" .
2522                       "<title>" .
2523                       sprintf("%d %s %02d:%02d", $cd{'mday'}, $cd{'month'}, $cd{'hour'}, $cd{'minute'}) . " - " . esc_html($co{'title'}) .
2524                       "</title>\n" .
2525                       "<author>" . esc_html($co{'author'}) . "</author>\n" .
2526                       "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
2527                       "<guid isPermaLink=\"true\">" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</guid>\n" .
2528                       "<link>" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</link>\n" .
2529                       "<description>" . esc_html($co{'title'}) . "</description>\n" .
2530                       "<content:encoded>" .
2531                       "<![CDATA[\n";
2532                 my $comment = $co{'comment'};
2533                 foreach my $line (@$comment) {
2534                         $line = decode("utf8", $line, Encode::FB_DEFAULT);
2535                         print "$line<br/>\n";
2536                 }
2537                 print "<br/>\n";
2538                 foreach my $line (@difftree) {
2539                         if (!($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/)) {
2540                                 next;
2541                         }
2542                         my $file = validate_input(unquote($7));
2543                         $file = decode("utf8", $file, Encode::FB_DEFAULT);
2544                         print "$file<br/>\n";
2545                 }
2546                 print "]]>\n" .
2547                       "</content:encoded>\n" .
2548                       "</item>\n";
2549         }
2550         print "</channel></rss>";
2551 }
2552
2553 sub git_opml {
2554         my @list = git_read_projects();
2555
2556         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
2557         print "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n".
2558               "<opml version=\"1.0\">\n".
2559               "<head>".
2560               "  <title>$site_name Git OPML Export</title>\n".
2561               "</head>\n".
2562               "<body>\n".
2563               "<outline text=\"git RSS feeds\">\n";
2564
2565         foreach my $pr (@list) {
2566                 my %proj = %$pr;
2567                 my $head = git_read_head($proj{'path'});
2568                 if (!defined $head) {
2569                         next;
2570                 }
2571                 $ENV{'GIT_DIR'} = "$projectroot/$proj{'path'}";
2572                 my %co = git_read_commit($head);
2573                 if (!%co) {
2574                         next;
2575                 }
2576
2577                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
2578                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
2579                 my $html = "$my_url?p=$proj{'path'};a=summary";
2580                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
2581         }
2582         print "</outline>\n".
2583               "</body>\n".
2584               "</opml>\n";
2585 }