gitweb/gitweb.perl

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