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 use File::Basename qw(basename);
  19 binmode STDOUT, ':utf8';
  20
  21 our $cgi = new CGI;
  22 our $version = "++GIT_VERSION++";
  23 our $my_url = $cgi->url();
  24 our $my_uri = $cgi->url(-absolute => 1);
  25
  26 # core git executable to use
  27 # this can just be "git" if your webserver has a sensible PATH
  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 # string of the home link on top of all pages
  41 our $home_link_str = "++GITWEB_HOME_LINK_STR++";
  42
  43 # name of your site or organization to appear in page titles
  44 # replace this with something more descriptive for clearer bookmarks
  45 our $site_name = "++GITWEB_SITENAME++" || $ENV{'SERVER_NAME'} || "Untitled";
  46
  47 # html text to include at home page
  48 our $home_text = "++GITWEB_HOMETEXT++";
  49
  50 # URI of default stylesheet
  51 our $stylesheet = "++GITWEB_CSS++";
  52 # URI of GIT logo
  53 our $logo = "++GITWEB_LOGO++";
  54
  55 # source of projects list
  56 our $projects_list = "++GITWEB_LIST++";
  57
  58 # list of git base URLs used for URL to where fetch project from,
  59 # i.e. full URL is "$git_base_url/$project"
  60 our @git_base_url_list = ("++GITWEB_BASE_URL++");
  61
  62 # default blob_plain mimetype and default charset for text/plain blob
  63 our $default_blob_plain_mimetype = 'text/plain';
  64 our $default_text_plain_charset  = undef;
  65
  66 # file to use for guessing MIME types before trying /etc/mime.types
  67 # (relative to the current git repository)
  68 our $mimetypes_file = undef;
  69
  70 our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
  71 require $GITWEB_CONFIG if -e $GITWEB_CONFIG;
  72
  73 # version of the core git binary
  74 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
  75
  76 $projects_list ||= $projectroot;
  77 if (! -d $git_temp) {
  78         mkdir($git_temp, 0700) || die_error(undef, "Couldn't mkdir $git_temp");
  79 }
  80
  81 # ======================================================================
  82 # input validation and dispatch
  83 our $action = $cgi->param('a');
  84 if (defined $action) {
  85         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
  86                 die_error(undef, "Invalid action parameter");
  87         }
  88         # action which does not check rest of parameters
  89         if ($action eq "opml") {
  90                 git_opml();
  91                 exit;
  92         }
  93 }
  94
  95 our $project = ($cgi->param('p') || $ENV{'PATH_INFO'});
  96 if (defined $project) {
  97         $project =~ s|^/||;
  98         $project =~ s|/$||;
  99         $project = undef unless $project;
 100 }
 101 if (defined $project) {
 102         if (!validate_input($project)) {
 103                 die_error(undef, "Invalid project parameter");
 104         }
 105         if (!(-d "$projectroot/$project")) {
 106                 die_error(undef, "No such directory");
 107         }
 108         if (!(-e "$projectroot/$project/HEAD")) {
 109                 die_error(undef, "No such project");
 110         }
 111         $ENV{'GIT_DIR'} = "$projectroot/$project";
 112 } else {
 113         git_project_list();
 114         exit;
 115 }
 116
 117 our $file_name = $cgi->param('f');
 118 if (defined $file_name) {
 119         if (!validate_input($file_name)) {
 120                 die_error(undef, "Invalid file parameter");
 121         }
 122 }
 123
 124 our $file_parent = $cgi->param('fp');
 125 if (defined $file_parent) {
 126         if (!validate_input($file_parent)) {
 127                 die_error(undef, "Invalid file parent parameter");
 128         }
 129 }
 130
 131 our $hash = $cgi->param('h');
 132 if (defined $hash) {
 133         if (!validate_input($hash)) {
 134                 die_error(undef, "Invalid hash parameter");
 135         }
 136 }
 137
 138 our $hash_parent = $cgi->param('hp');
 139 if (defined $hash_parent) {
 140         if (!validate_input($hash_parent)) {
 141                 die_error(undef, "Invalid hash parent parameter");
 142         }
 143 }
 144
 145 our $hash_base = $cgi->param('hb');
 146 if (defined $hash_base) {
 147         if (!validate_input($hash_base)) {
 148                 die_error(undef, "Invalid hash base parameter");
 149         }
 150 }
 151
 152 our $page = $cgi->param('pg');
 153 if (defined $page) {
 154         if ($page =~ m/[^0-9]$/) {
 155                 die_error(undef, "Invalid page parameter");
 156         }
 157 }
 158
 159 our $searchtext = $cgi->param('s');
 160 if (defined $searchtext) {
 161         if ($searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 162                 die_error(undef, "Invalid search parameter");
 163         }
 164         $searchtext = quotemeta $searchtext;
 165 }
 166
 167 # dispatch
 168 my %actions = (
 169         "blame" => \&git_blame2,
 170         "blobdiff" => \&git_blobdiff,
 171         "blobdiff_plain" => \&git_blobdiff_plain,
 172         "blob" => \&git_blob,
 173         "blob_plain" => \&git_blob_plain,
 174         "commitdiff" => \&git_commitdiff,
 175         "commitdiff_plain" => \&git_commitdiff_plain,
 176         "commit" => \&git_commit,
 177         "heads" => \&git_heads,
 178         "history" => \&git_history,
 179         "log" => \&git_log,
 180         "rss" => \&git_rss,
 181         "search" => \&git_search,
 182         "shortlog" => \&git_shortlog,
 183         "summary" => \&git_summary,
 184         "tag" => \&git_tag,
 185         "tags" => \&git_tags,
 186         "tree" => \&git_tree,
 187         "snapshot" => \&git_snapshot,
 188 );
 189
 190 $action = 'summary' if (!defined($action));
 191 if (!defined($actions{$action})) {
 192         die_error(undef, "Unknown action");
 193 }
 194 $actions{$action}->();
 195 exit;
 196
 197 ## ======================================================================
 198 ## action links
 199
 200 sub href(%) {
 201         my %mapping = (
 202                 action => "a",
 203                 project => "p",
 204                 file_name => "f",
 205                 file_parent => "fp",
 206                 hash => "h",
 207                 hash_parent => "hp",
 208                 hash_base => "hb",
 209                 page => "pg",
 210                 searchtext => "s",
 211         );
 212
 213         my %params = @_;
 214         $params{"project"} ||= $project;
 215
 216         my $href = "$my_uri?";
 217         $href .= esc_param( join(";",
 218                 map {
 219                         "$mapping{$_}=$params{$_}" if defined $params{$_}
 220                 } keys %params
 221         ) );
 222
 223         return $href;
 224 }
 225
 226
 227 ## ======================================================================
 228 ## validation, quoting/unquoting and escaping
 229
 230 sub validate_input {
 231         my $input = shift;
 232
 233         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 234                 return $input;
 235         }
 236         if ($input =~ m/(^|\/)(|\.|\.\.)($|\/)/) {
 237                 return undef;
 238         }
 239         if ($input =~ m/[^a-zA-Z0-9_\x80-\xff\ \t\.\/\-\+\#\~\%]/) {
 240                 return undef;
 241         }
 242         return $input;
 243 }
 244
 245 # quote unsafe chars, but keep the slash, even when it's not
 246 # correct, but quoted slashes look too horrible in bookmarks
 247 sub esc_param {
 248         my $str = shift;
 249         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 250         $str =~ s/\+/%2B/g;
 251         $str =~ s/ /\+/g;
 252         return $str;
 253 }
 254
 255 # replace invalid utf8 character with SUBSTITUTION sequence
 256 sub esc_html {
 257         my $str = shift;
 258         $str = decode("utf8", $str, Encode::FB_DEFAULT);
 259         $str = escapeHTML($str);
 260         $str =~ s/\014/^L/g; # escape FORM FEED (FF) character (e.g. in COPYING file)
 261         return $str;
 262 }
 263
 264 # git may return quoted and escaped filenames
 265 sub unquote {
 266         my $str = shift;
 267         if ($str =~ m/^"(.*)"$/) {
 268                 $str = $1;
 269                 $str =~ s/\\([0-7]{1,3})/chr(oct($1))/eg;
 270         }
 271         return $str;
 272 }
 273
 274 # escape tabs (convert tabs to spaces)
 275 sub untabify {
 276         my $line = shift;
 277
 278         while ((my $pos = index($line, "\t")) != -1) {
 279                 if (my $count = (8 - ($pos % 8))) {
 280                         my $spaces = ' ' x $count;
 281                         $line =~ s/\t/$spaces/;
 282                 }
 283         }
 284
 285         return $line;
 286 }
 287
 288 ## ----------------------------------------------------------------------
 289 ## HTML aware string manipulation
 290
 291 sub chop_str {
 292         my $str = shift;
 293         my $len = shift;
 294         my $add_len = shift || 10;
 295
 296         # allow only $len chars, but don't cut a word if it would fit in $add_len
 297         # if it doesn't fit, cut it if it's still longer than the dots we would add
 298         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 299         my $body = $1;
 300         my $tail = $2;
 301         if (length($tail) > 4) {
 302                 $tail = " ...";
 303                 $body =~ s/&[^;]*$//; # remove chopped character entities
 304         }
 305         return "$body$tail";
 306 }
 307
 308 ## ----------------------------------------------------------------------
 309 ## functions returning short strings
 310
 311 # CSS class for given age value (in seconds)
 312 sub age_class {
 313         my $age = shift;
 314
 315         if ($age < 60*60*2) {
 316                 return "age0";
 317         } elsif ($age < 60*60*24*2) {
 318                 return "age1";
 319         } else {
 320                 return "age2";
 321         }
 322 }
 323
 324 # convert age in seconds to "nn units ago" string
 325 sub age_string {
 326         my $age = shift;
 327         my $age_str;
 328
 329         if ($age > 60*60*24*365*2) {
 330                 $age_str = (int $age/60/60/24/365);
 331                 $age_str .= " years ago";
 332         } elsif ($age > 60*60*24*(365/12)*2) {
 333                 $age_str = int $age/60/60/24/(365/12);
 334                 $age_str .= " months ago";
 335         } elsif ($age > 60*60*24*7*2) {
 336                 $age_str = int $age/60/60/24/7;
 337                 $age_str .= " weeks ago";
 338         } elsif ($age > 60*60*24*2) {
 339                 $age_str = int $age/60/60/24;
 340                 $age_str .= " days ago";
 341         } elsif ($age > 60*60*2) {
 342                 $age_str = int $age/60/60;
 343                 $age_str .= " hours ago";
 344         } elsif ($age > 60*2) {
 345                 $age_str = int $age/60;
 346                 $age_str .= " min ago";
 347         } elsif ($age > 2) {
 348                 $age_str = int $age;
 349                 $age_str .= " sec ago";
 350         } else {
 351                 $age_str .= " right now";
 352         }
 353         return $age_str;
 354 }
 355
 356 # convert file mode in octal to symbolic file mode string
 357 sub mode_str {
 358         my $mode = oct shift;
 359
 360         if (S_ISDIR($mode & S_IFMT)) {
 361                 return 'drwxr-xr-x';
 362         } elsif (S_ISLNK($mode)) {
 363                 return 'lrwxrwxrwx';
 364         } elsif (S_ISREG($mode)) {
 365                 # git cares only about the executable bit
 366                 if ($mode & S_IXUSR) {
 367                         return '-rwxr-xr-x';
 368                 } else {
 369                         return '-rw-r--r--';
 370                 };
 371         } else {
 372                 return '----------';
 373         }
 374 }
 375
 376 # convert file mode in octal to file type string
 377 sub file_type {
 378         my $mode = oct shift;
 379
 380         if (S_ISDIR($mode & S_IFMT)) {
 381                 return "directory";
 382         } elsif (S_ISLNK($mode)) {
 383                 return "symlink";
 384         } elsif (S_ISREG($mode)) {
 385                 return "file";
 386         } else {
 387                 return "unknown";
 388         }
 389 }
 390
 391 ## ----------------------------------------------------------------------
 392 ## functions returning short HTML fragments, or transforming HTML fragments
 393 ## which don't beling to other sections
 394
 395 # format line of commit message or tag comment
 396 sub format_log_line_html {
 397         my $line = shift;
 398
 399         $line = esc_html($line);
 400         $line =~ s/ /&nbsp;/g;
 401         if ($line =~ m/([0-9a-fA-F]{40})/) {
 402                 my $hash_text = $1;
 403                 if (git_get_type($hash_text) eq "commit") {
 404                         my $link = $cgi->a({-class => "text", -href => href(action=>"commit", hash=>$hash_text)}, $hash_text);
 405                         $line =~ s/$hash_text/$link/;
 406                 }
 407         }
 408         return $line;
 409 }
 410
 411 # format marker of refs pointing to given object
 412 sub format_ref_marker {
 413         my ($refs, $id) = @_;
 414         my $markers = '';
 415
 416         if (defined $refs->{$id}) {
 417                 foreach my $ref (@{$refs->{$id}}) {
 418                         my ($type, $name) = qw();
 419                         # e.g. tags/v2.6.11 or heads/next
 420                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
 421                                 $type = $1;
 422                                 $name = $2;
 423                         } else {
 424                                 $type = "ref";
 425                                 $name = $ref;
 426                         }
 427
 428                         $markers .= " <span class=\"$type\">" . esc_html($name) . "</span>";
 429                 }
 430         }
 431
 432         if ($markers) {
 433                 return ' <span class="refs">'. $markers . '</span>';
 434         } else {
 435                 return "";
 436         }
 437 }
 438
 439 # format, perhaps shortened and with markers, title line
 440 sub format_subject_html {
 441         my ($long, $short, $href, $extra) = @_;
 442         $extra = '' unless defined($extra);
 443
 444         if (length($short) < length($long)) {
 445                 return $cgi->a({-href => $href, -class => "list",
 446                                 -title => $long},
 447                        esc_html($short) . $extra);
 448         } else {
 449                 return $cgi->a({-href => $href, -class => "list"},
 450                        esc_html($long)  . $extra);
 451         }
 452 }
 453
 454 ## ----------------------------------------------------------------------
 455 ## git utility subroutines, invoking git commands
 456
 457 # get HEAD ref of given project as hash
 458 sub git_get_head_hash {
 459         my $project = shift;
 460         my $oENV = $ENV{'GIT_DIR'};
 461         my $retval = undef;
 462         $ENV{'GIT_DIR'} = "$projectroot/$project";
 463         if (open my $fd, "-|", $GIT, "rev-parse", "--verify", "HEAD") {
 464                 my $head = <$fd>;
 465                 close $fd;
 466                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
 467                         $retval = $1;
 468                 }
 469         }
 470         if (defined $oENV) {
 471                 $ENV{'GIT_DIR'} = $oENV;
 472         }
 473         return $retval;
 474 }
 475
 476 # get type of given object
 477 sub git_get_type {
 478         my $hash = shift;
 479
 480         open my $fd, "-|", $GIT, "cat-file", '-t', $hash or return;
 481         my $type = <$fd>;
 482         close $fd or return;
 483         chomp $type;
 484         return $type;
 485 }
 486
 487 sub git_get_project_config {
 488         my $key = shift;
 489
 490         return unless ($key);
 491         $key =~ s/^gitweb\.//;
 492         return if ($key =~ m/\W/);
 493
 494         my $val = qx($GIT repo-config --get gitweb.$key);
 495         return ($val);
 496 }
 497
 498 sub git_get_project_config_bool {
 499         my $val = git_get_project_config (@_);
 500         if ($val and $val =~ m/true|yes|on/) {
 501                 return (1);
 502         }
 503         return; # implicit false
 504 }
 505
 506 # get hash of given path at given ref
 507 sub git_get_hash_by_path {
 508         my $base = shift;
 509         my $path = shift || return undef;
 510
 511         my $tree = $base;
 512
 513         open my $fd, "-|", $GIT, "ls-tree", $base, "--", $path
 514                 or die_error(undef, "Open git-ls-tree failed");
 515         my $line = <$fd>;
 516         close $fd or return undef;
 517
 518         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
 519         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/;
 520         return $3;
 521 }
 522
 523 ## ......................................................................
 524 ## git utility functions, directly accessing git repository
 525
 526 # assumes that PATH is not symref
 527 sub git_get_hash_by_ref {
 528         my $path = shift;
 529
 530         open my $fd, "$projectroot/$path" or return undef;
 531         my $head = <$fd>;
 532         close $fd;
 533         chomp $head;
 534         if ($head =~ m/^[0-9a-fA-F]{40}$/) {
 535                 return $head;
 536         }
 537 }
 538
 539 sub git_get_project_description {
 540         my $path = shift;
 541
 542         open my $fd, "$projectroot/$path/description" or return undef;
 543         my $descr = <$fd>;
 544         close $fd;
 545         chomp $descr;
 546         return $descr;
 547 }
 548
 549 sub git_get_project_url_list {
 550         my $path = shift;
 551
 552         open my $fd, "$projectroot/$path/cloneurl" or return undef;
 553         my @git_project_url_list = map { chomp; $_ } <$fd>;
 554         close $fd;
 555
 556         return wantarray ? @git_project_url_list : \@git_project_url_list;
 557 }
 558
 559 sub git_get_projects_list {
 560         my @list;
 561
 562         if (-d $projects_list) {
 563                 # search in directory
 564                 my $dir = $projects_list;
 565                 opendir my ($dh), $dir or return undef;
 566                 while (my $dir = readdir($dh)) {
 567                         if (-e "$projectroot/$dir/HEAD") {
 568                                 my $pr = {
 569                                         path => $dir,
 570                                 };
 571                                 push @list, $pr
 572                         }
 573                 }
 574                 closedir($dh);
 575         } elsif (-f $projects_list) {
 576                 # read from file(url-encoded):
 577                 # 'git%2Fgit.git Linus+Torvalds'
 578                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
 579                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
 580                 open my ($fd), $projects_list or return undef;
 581                 while (my $line = <$fd>) {
 582                         chomp $line;
 583                         my ($path, $owner) = split ' ', $line;
 584                         $path = unescape($path);
 585                         $owner = unescape($owner);
 586                         if (!defined $path) {
 587                                 next;
 588                         }
 589                         if (-e "$projectroot/$path/HEAD") {
 590                                 my $pr = {
 591                                         path => $path,
 592                                         owner => decode("utf8", $owner, Encode::FB_DEFAULT),
 593                                 };
 594                                 push @list, $pr
 595                         }
 596                 }
 597                 close $fd;
 598         }
 599         @list = sort {$a->{'path'} cmp $b->{'path'}} @list;
 600         return @list;
 601 }
 602
 603 sub git_get_project_owner {
 604         my $project = shift;
 605         my $owner;
 606
 607         return undef unless $project;
 608
 609         # read from file (url-encoded):
 610         # 'git%2Fgit.git Linus+Torvalds'
 611         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
 612         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
 613         if (-f $projects_list) {
 614                 open (my $fd , $projects_list);
 615                 while (my $line = <$fd>) {
 616                         chomp $line;
 617                         my ($pr, $ow) = split ' ', $line;
 618                         $pr = unescape($pr);
 619                         $ow = unescape($ow);
 620                         if ($pr eq $project) {
 621                                 $owner = decode("utf8", $ow, Encode::FB_DEFAULT);
 622                                 last;
 623                         }
 624                 }
 625                 close $fd;
 626         }
 627         if (!defined $owner) {
 628                 $owner = get_file_owner("$projectroot/$project");
 629         }
 630
 631         return $owner;
 632 }
 633
 634 sub git_get_references {
 635         my $type = shift || "";
 636         my %refs;
 637         my $fd;
 638         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c      refs/tags/v2.6.11
 639         # c39ae07f393806ccf406ef966e9a15afc43cc36a      refs/tags/v2.6.11^{}
 640         if (-f "$projectroot/$project/info/refs") {
 641                 open $fd, "$projectroot/$project/info/refs"
 642                         or return;
 643         } else {
 644                 open $fd, "-|", $GIT, "ls-remote", "."
 645                         or return;
 646         }
 647
 648         while (my $line = <$fd>) {
 649                 chomp $line;
 650                 if ($line =~ m/^([0-9a-fA-F]{40})\trefs\/($type\/?[^\^]+)/) {
 651                         if (defined $refs{$1}) {
 652                                 push @{$refs{$1}}, $2;
 653                         } else {
 654                                 $refs{$1} = [ $2 ];
 655                         }
 656                 }
 657         }
 658         close $fd or return;
 659         return \%refs;
 660 }
 661
 662 ## ----------------------------------------------------------------------
 663 ## parse to hash functions
 664
 665 sub parse_date {
 666         my $epoch = shift;
 667         my $tz = shift || "-0000";
 668
 669         my %date;
 670         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
 671         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
 672         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
 673         $date{'hour'} = $hour;
 674         $date{'minute'} = $min;
 675         $date{'mday'} = $mday;
 676         $date{'day'} = $days[$wday];
 677         $date{'month'} = $months[$mon];
 678         $date{'rfc2822'} = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000", $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
 679         $date{'mday-time'} = sprintf "%d %s %02d:%02d", $mday, $months[$mon], $hour ,$min;
 680
 681         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
 682         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
 683         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
 684         $date{'hour_local'} = $hour;
 685         $date{'minute_local'} = $min;
 686         $date{'tz_local'} = $tz;
 687         return %date;
 688 }
 689
 690 sub parse_tag {
 691         my $tag_id = shift;
 692         my %tag;
 693         my @comment;
 694
 695         open my $fd, "-|", $GIT, "cat-file", "tag", $tag_id or return;
 696         $tag{'id'} = $tag_id;
 697         while (my $line = <$fd>) {
 698                 chomp $line;
 699                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
 700                         $tag{'object'} = $1;
 701                 } elsif ($line =~ m/^type (.+)$/) {
 702                         $tag{'type'} = $1;
 703                 } elsif ($line =~ m/^tag (.+)$/) {
 704                         $tag{'name'} = $1;
 705                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
 706                         $tag{'author'} = $1;
 707                         $tag{'epoch'} = $2;
 708                         $tag{'tz'} = $3;
 709                 } elsif ($line =~ m/--BEGIN/) {
 710                         push @comment, $line;
 711                         last;
 712                 } elsif ($line eq "") {
 713                         last;
 714                 }
 715         }
 716         push @comment, <$fd>;
 717         $tag{'comment'} = \@comment;
 718         close $fd or return;
 719         if (!defined $tag{'name'}) {
 720                 return
 721         };
 722         return %tag
 723 }
 724
 725 sub parse_commit {
 726         my $commit_id = shift;
 727         my $commit_text = shift;
 728
 729         my @commit_lines;
 730         my %co;
 731
 732         if (defined $commit_text) {
 733                 @commit_lines = @$commit_text;
 734         } else {
 735                 $/ = "\0";
 736                 open my $fd, "-|", $GIT, "rev-list", "--header", "--parents", "--max-count=1", $commit_id or return;
 737                 @commit_lines = split '\n', <$fd>;
 738                 close $fd or return;
 739                 $/ = "\n";
 740                 pop @commit_lines;
 741         }
 742         my $header = shift @commit_lines;
 743         if (!($header =~ m/^[0-9a-fA-F]{40}/)) {
 744                 return;
 745         }
 746         ($co{'id'}, my @parents) = split ' ', $header;
 747         $co{'parents'} = \@parents;
 748         $co{'parent'} = $parents[0];
 749         while (my $line = shift @commit_lines) {
 750                 last if $line eq "\n";
 751                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
 752                         $co{'tree'} = $1;
 753                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
 754                         $co{'author'} = $1;
 755                         $co{'author_epoch'} = $2;
 756                         $co{'author_tz'} = $3;
 757                         if ($co{'author'} =~ m/^([^<]+) </) {
 758                                 $co{'author_name'} = $1;
 759                         } else {
 760                                 $co{'author_name'} = $co{'author'};
 761                         }
 762                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
 763                         $co{'committer'} = $1;
 764                         $co{'committer_epoch'} = $2;
 765                         $co{'committer_tz'} = $3;
 766                         $co{'committer_name'} = $co{'committer'};
 767                         $co{'committer_name'} =~ s/ <.*//;
 768                 }
 769         }
 770         if (!defined $co{'tree'}) {
 771                 return;
 772         };
 773
 774         foreach my $title (@commit_lines) {
 775                 $title =~ s/^    //;
 776                 if ($title ne "") {
 777                         $co{'title'} = chop_str($title, 80, 5);
 778                         # remove leading stuff of merges to make the interesting part visible
 779                         if (length($title) > 50) {
 780                                 $title =~ s/^Automatic //;
 781                                 $title =~ s/^merge (of|with) /Merge ... /i;
 782                                 if (length($title) > 50) {
 783                                         $title =~ s/(http|rsync):\/\///;
 784                                 }
 785                                 if (length($title) > 50) {
 786                                         $title =~ s/(master|www|rsync)\.//;
 787                                 }
 788                                 if (length($title) > 50) {
 789                                         $title =~ s/kernel.org:?//;
 790                                 }
 791                                 if (length($title) > 50) {
 792                                         $title =~ s/\/pub\/scm//;
 793                                 }
 794                         }
 795                         $co{'title_short'} = chop_str($title, 50, 5);
 796                         last;
 797                 }
 798         }
 799         # remove added spaces
 800         foreach my $line (@commit_lines) {
 801                 $line =~ s/^    //;
 802         }
 803         $co{'comment'} = \@commit_lines;
 804
 805         my $age = time - $co{'committer_epoch'};
 806         $co{'age'} = $age;
 807         $co{'age_string'} = age_string($age);
 808         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
 809         if ($age > 60*60*24*7*2) {
 810                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
 811                 $co{'age_string_age'} = $co{'age_string'};
 812         } else {
 813                 $co{'age_string_date'} = $co{'age_string'};
 814                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
 815         }
 816         return %co;
 817 }
 818
 819 # parse ref from ref_file, given by ref_id, with given type
 820 sub parse_ref {
 821         my $ref_file = shift;
 822         my $ref_id = shift;
 823         my $type = shift || git_get_type($ref_id);
 824         my %ref_item;
 825
 826         $ref_item{'type'} = $type;
 827         $ref_item{'id'} = $ref_id;
 828         $ref_item{'epoch'} = 0;
 829         $ref_item{'age'} = "unknown";
 830         if ($type eq "tag") {
 831                 my %tag = parse_tag($ref_id);
 832                 $ref_item{'comment'} = $tag{'comment'};
 833                 if ($tag{'type'} eq "commit") {
 834                         my %co = parse_commit($tag{'object'});
 835                         $ref_item{'epoch'} = $co{'committer_epoch'};
 836                         $ref_item{'age'} = $co{'age_string'};
 837                 } elsif (defined($tag{'epoch'})) {
 838                         my $age = time - $tag{'epoch'};
 839                         $ref_item{'epoch'} = $tag{'epoch'};
 840                         $ref_item{'age'} = age_string($age);
 841                 }
 842                 $ref_item{'reftype'} = $tag{'type'};
 843                 $ref_item{'name'} = $tag{'name'};
 844                 $ref_item{'refid'} = $tag{'object'};
 845         } elsif ($type eq "commit"){
 846                 my %co = parse_commit($ref_id);
 847                 $ref_item{'reftype'} = "commit";
 848                 $ref_item{'name'} = $ref_file;
 849                 $ref_item{'title'} = $co{'title'};
 850                 $ref_item{'refid'} = $ref_id;
 851                 $ref_item{'epoch'} = $co{'committer_epoch'};
 852                 $ref_item{'age'} = $co{'age_string'};
 853         } else {
 854                 $ref_item{'reftype'} = $type;
 855                 $ref_item{'name'} = $ref_file;
 856                 $ref_item{'refid'} = $ref_id;
 857         }
 858
 859         return %ref_item;
 860 }
 861
 862 ## ......................................................................
 863 ## parse to array of hashes functions
 864
 865 sub git_get_refs_list {
 866         my $ref_dir = shift;
 867         my @reflist;
 868
 869         my @refs;
 870         my $pfxlen = length("$projectroot/$project/$ref_dir");
 871         File::Find::find(sub {
 872                 return if (/^\./);
 873                 if (-f $_) {
 874                         push @refs, substr($File::Find::name, $pfxlen + 1);
 875                 }
 876         }, "$projectroot/$project/$ref_dir");
 877
 878         foreach my $ref_file (@refs) {
 879                 my $ref_id = git_get_hash_by_ref("$project/$ref_dir/$ref_file");
 880                 my $type = git_get_type($ref_id) || next;
 881                 my %ref_item = parse_ref($ref_file, $ref_id, $type);
 882
 883                 push @reflist, \%ref_item;
 884         }
 885         # sort refs by age
 886         @reflist = sort {$b->{'epoch'} <=> $a->{'epoch'}} @reflist;
 887         return \@reflist;
 888 }
 889
 890 ## ----------------------------------------------------------------------
 891 ## filesystem-related functions
 892
 893 sub get_file_owner {
 894         my $path = shift;
 895
 896         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
 897         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
 898         if (!defined $gcos) {
 899                 return undef;
 900         }
 901         my $owner = $gcos;
 902         $owner =~ s/[,;].*$//;
 903         return decode("utf8", $owner, Encode::FB_DEFAULT);
 904 }
 905
 906 ## ......................................................................
 907 ## mimetype related functions
 908
 909 sub mimetype_guess_file {
 910         my $filename = shift;
 911         my $mimemap = shift;
 912         -r $mimemap or return undef;
 913
 914         my %mimemap;
 915         open(MIME, $mimemap) or return undef;
 916         while (<MIME>) {
 917                 next if m/^#/; # skip comments
 918                 my ($mime, $exts) = split(/\t+/);
 919                 if (defined $exts) {
 920                         my @exts = split(/\s+/, $exts);
 921                         foreach my $ext (@exts) {
 922                                 $mimemap{$ext} = $mime;
 923                         }
 924                 }
 925         }
 926         close(MIME);
 927
 928         $filename =~ /\.(.*?)$/;
 929         return $mimemap{$1};
 930 }
 931
 932 sub mimetype_guess {
 933         my $filename = shift;
 934         my $mime;
 935         $filename =~ /\./ or return undef;
 936
 937         if ($mimetypes_file) {
 938                 my $file = $mimetypes_file;
 939                 if ($file !~ m!^/!) { # if it is relative path
 940                         # it is relative to project
 941                         $file = "$projectroot/$project/$file";
 942                 }
 943                 $mime = mimetype_guess_file($filename, $file);
 944         }
 945         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
 946         return $mime;
 947 }
 948
 949 sub blob_mimetype {
 950         my $fd = shift;
 951         my $filename = shift;
 952
 953         if ($filename) {
 954                 my $mime = mimetype_guess($filename);
 955                 $mime and return $mime;
 956         }
 957
 958         # just in case
 959         return $default_blob_plain_mimetype unless $fd;
 960
 961         if (-T $fd) {
 962                 return 'text/plain' .
 963                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
 964         } elsif (! $filename) {
 965                 return 'application/octet-stream';
 966         } elsif ($filename =~ m/\.png$/i) {
 967                 return 'image/png';
 968         } elsif ($filename =~ m/\.gif$/i) {
 969                 return 'image/gif';
 970         } elsif ($filename =~ m/\.jpe?g$/i) {
 971                 return 'image/jpeg';
 972         } else {
 973                 return 'application/octet-stream';
 974         }
 975 }
 976
 977 ## ======================================================================
 978 ## functions printing HTML: header, footer, error page
 979
 980 sub git_header_html {
 981         my $status = shift || "200 OK";
 982         my $expires = shift;
 983
 984         my $title = "$site_name git";
 985         if (defined $project) {
 986                 $title .= " - $project";
 987                 if (defined $action) {
 988                         $title .= "/$action";
 989                         if (defined $file_name) {
 990                                 $title .= " - $file_name";
 991                                 if ($action eq "tree" && $file_name !~ m|/$|) {
 992                                         $title .= "/";
 993                                 }
 994                         }
 995                 }
 996         }
 997         my $content_type;
 998         # require explicit support from the UA if we are to send the page as
 999         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
1000         # we have to do this because MSIE sometimes globs '*/*', pretending to
1001         # support xhtml+xml but choking when it gets what it asked for.
1002         if (defined $cgi->http('HTTP_ACCEPT') && $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ && $cgi->Accept('application/xhtml+xml') != 0) {
1003                 $content_type = 'application/xhtml+xml';
1004         } else {
1005                 $content_type = 'text/html';
1006         }
1007         print $cgi->header(-type=>$content_type, -charset => 'utf-8', -status=> $status, -expires => $expires);
1008         print <<EOF;
1009 <?xml version="1.0" encoding="utf-8"?>
1010 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
1011 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
1012 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
1013 <!-- git core binaries version $git_version -->
1014 <head>
1015 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
1016 <meta name="generator" content="gitweb/$version git/$git_version"/>
1017 <meta name="robots" content="index, nofollow"/>
1018 <title>$title</title>
1019 <link rel="stylesheet" type="text/css" href="$stylesheet"/>
1020 EOF
1021         if (defined $project) {
1022                 printf('<link rel="alternate" title="%s log" '.
1023                        'href="%s" type="application/rss+xml"/>'."\n",
1024                        esc_param($project), href(action=>"rss"));
1025         }
1026
1027         print "</head>\n" .
1028               "<body>\n" .
1029               "<div class=\"page_header\">\n" .
1030               "<a href=\"http://www.kernel.org/pub/software/scm/git/docs/\" title=\"git documentation\">" .
1031               "<img src=\"$logo\" width=\"72\" height=\"27\" alt=\"git\" style=\"float:right; border-width:0px;\"/>" .
1032               "</a>\n";
1033         print $cgi->a({-href => esc_param($home_link)}, $home_link_str) . " / ";
1034         if (defined $project) {
1035                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
1036                 if (defined $action) {
1037                         print " / $action";
1038                 }
1039                 print "\n";
1040                 if (!defined $searchtext) {
1041                         $searchtext = "";
1042                 }
1043                 my $search_hash;
1044                 if (defined $hash_base) {
1045                         $search_hash = $hash_base;
1046                 } elsif (defined $hash) {
1047                         $search_hash = $hash;
1048                 } else {
1049                         $search_hash = "HEAD";
1050                 }
1051                 $cgi->param("a", "search");
1052                 $cgi->param("h", $search_hash);
1053                 print $cgi->startform(-method => "get", -action => $my_uri) .
1054                       "<div class=\"search\">\n" .
1055                       $cgi->hidden(-name => "p") . "\n" .
1056                       $cgi->hidden(-name => "a") . "\n" .
1057                       $cgi->hidden(-name => "h") . "\n" .
1058                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1059                       "</div>" .
1060                       $cgi->end_form() . "\n";
1061         }
1062         print "</div>\n";
1063 }
1064
1065 sub git_footer_html {
1066         print "<div class=\"page_footer\">\n";
1067         if (defined $project) {
1068                 my $descr = git_get_project_description($project);
1069                 if (defined $descr) {
1070                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1071                 }
1072                 print $cgi->a({-href => href(action=>"rss"), -class => "rss_logo"}, "RSS") . "\n";
1073         } else {
1074                 print $cgi->a({-href => href(action=>"opml"), -class => "rss_logo"}, "OPML") . "\n";
1075         }
1076         print "</div>\n" .
1077               "</body>\n" .
1078               "</html>";
1079 }
1080
1081 sub die_error {
1082         my $status = shift || "403 Forbidden";
1083         my $error = shift || "Malformed query, file missing or permission denied";
1084
1085         git_header_html($status);
1086         print "<div class=\"page_body\">\n" .
1087               "<br/><br/>\n" .
1088               "$status - $error\n" .
1089               "<br/>\n" .
1090               "</div>\n";
1091         git_footer_html();
1092         exit;
1093 }
1094
1095 ## ----------------------------------------------------------------------
1096 ## functions printing or outputting HTML: navigation
1097
1098 sub git_print_page_nav {
1099         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
1100         $extra = '' if !defined $extra; # pager or formats
1101
1102         my @navs = qw(summary shortlog log commit commitdiff tree);
1103         if ($suppress) {
1104                 @navs = grep { $_ ne $suppress } @navs;
1105         }
1106
1107         my %arg = map { $_ => {action=>$_} } @navs;
1108         if (defined $head) {
1109                 for (qw(commit commitdiff)) {
1110                         $arg{$_}{hash} = $head;
1111                 }
1112                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
1113                         for (qw(shortlog log)) {
1114                                 $arg{$_}{hash} = $head;
1115                         }
1116                 }
1117         }
1118         $arg{tree}{hash} = $treehead if defined $treehead;
1119         $arg{tree}{hash_base} = $treebase if defined $treebase;
1120
1121         print "<div class=\"page_nav\">\n" .
1122                 (join " | ",
1123                  map { $_ eq $current ?
1124                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
1125                  } @navs);
1126         print "<br/>\n$extra<br/>\n" .
1127               "</div>\n";
1128 }
1129
1130 sub format_paging_nav {
1131         my ($action, $hash, $head, $page, $nrevs) = @_;
1132         my $paging_nav;
1133
1134
1135         if ($hash ne $head || $page) {
1136                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
1137         } else {
1138                 $paging_nav .= "HEAD";
1139         }
1140
1141         if ($page > 0) {
1142                 $paging_nav .= " &sdot; " .
1143                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
1144                                  -accesskey => "p", -title => "Alt-p"}, "prev");
1145         } else {
1146                 $paging_nav .= " &sdot; prev";
1147         }
1148
1149         if ($nrevs >= (100 * ($page+1)-1)) {
1150                 $paging_nav .= " &sdot; " .
1151                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
1152                                  -accesskey => "n", -title => "Alt-n"}, "next");
1153         } else {
1154                 $paging_nav .= " &sdot; next";
1155         }
1156
1157         return $paging_nav;
1158 }
1159
1160 ## ......................................................................
1161 ## functions printing or outputting HTML: div
1162
1163 sub git_print_header_div {
1164         my ($action, $title, $hash, $hash_base) = @_;
1165         my %args = ();
1166
1167         $args{action} = $action;
1168         $args{hash} = $hash if $hash;
1169         $args{hash_base} = $hash_base if $hash_base;
1170
1171         print "<div class=\"header\">\n" .
1172               $cgi->a({-href => href(%args), -class => "title"},
1173               $title ? $title : $action) .
1174               "\n</div>\n";
1175 }
1176
1177 sub git_print_page_path {
1178         my $name = shift;
1179         my $type = shift;
1180
1181         if (!defined $name) {
1182                 print "<div class=\"page_path\"><b>/</b></div>\n";
1183         } elsif (defined $type && $type eq 'blob') {
1184                 print "<div class=\"page_path\"><b>" .
1185                         $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name)}, esc_html($name)) . "</b><br/></div>\n";
1186         } else {
1187                 print "<div class=\"page_path\"><b>" . esc_html($name) . "</b><br/></div>\n";
1188         }
1189 }
1190
1191 sub git_print_log {
1192         my $log = shift;
1193
1194         # remove leading empty lines
1195         while (defined $log->[0] && $log->[0] eq "") {
1196                 shift @$log;
1197         }
1198
1199         # print log
1200         my $signoff = 0;
1201         my $empty = 0;
1202         foreach my $line (@$log) {
1203                 # print only one empty line
1204                 # do not print empty line after signoff
1205                 if ($line eq "") {
1206                         next if ($empty || $signoff);
1207                         $empty = 1;
1208                 } else {
1209                         $empty = 0;
1210                 }
1211                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
1212                         $signoff = 1;
1213                         print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
1214                 } else {
1215                         $signoff = 0;
1216                         print format_log_line_html($line) . "<br/>\n";
1217                 }
1218         }
1219 }
1220
1221 sub git_print_simplified_log {
1222         my $log = shift;
1223         my $remove_title = shift;
1224
1225         shift @$log if $remove_title;
1226         # remove leading empty lines
1227         while (defined $log->[0] && $log->[0] eq "") {
1228                 shift @$log;
1229         }
1230
1231         # simplify and print log
1232         my $empty = 0;
1233         foreach my $line (@$log) {
1234                 # remove signoff lines
1235                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
1236                         next;
1237                 }
1238                 # print only one empty line
1239                 if ($line eq "") {
1240                         next if $empty;
1241                         $empty = 1;
1242                 } else {
1243                         $empty = 0;
1244                 }
1245                 print format_log_line_html($line) . "<br/>\n";
1246         }
1247         # end with single empty line
1248         print "<br/>\n" unless $empty;
1249 }
1250
1251 ## ......................................................................
1252 ## functions printing large fragments of HTML
1253
1254 sub git_difftree_body {
1255         my ($difftree, $parent) = @_;
1256
1257         print "<div class=\"list_head\">\n";
1258         if ($#{$difftree} > 10) {
1259                 print(($#{$difftree} + 1) . " files changed:\n");
1260         }
1261         print "</div>\n";
1262
1263         print "<table class=\"diff_tree\">\n";
1264         my $alternate = 0;
1265         foreach my $line (@{$difftree}) {
1266                 # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1267                 # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1268                 if ($line !~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1269                         next;
1270                 }
1271                 my $from_mode = $1;
1272                 my $to_mode = $2;
1273                 my $from_id = $3;
1274                 my $to_id = $4;
1275                 my $status = $5;
1276                 my $similarity = $6; # score
1277                 my $file = validate_input(unquote($7));
1278
1279                 if ($alternate) {
1280                         print "<tr class=\"dark\">\n";
1281                 } else {
1282                         print "<tr class=\"light\">\n";
1283                 }
1284                 $alternate ^= 1;
1285
1286                 if ($status eq "A") { # created
1287                         my $mode_chng = "";
1288                         if (S_ISREG(oct $to_mode)) {
1289                                 $mode_chng = sprintf(" with mode: %04o", (oct $to_mode) & 0777);
1290                         }
1291                         print "<td>" .
1292                               $cgi->a({-href => href(action=>"blob", hash=>$to_id, hash_base=>$hash, file_name=>$file),
1293                                       -class => "list"}, esc_html($file)) .
1294                               "</td>\n" .
1295                               "<td><span class=\"file_status new\">[new " . file_type($to_mode) . "$mode_chng]</span></td>\n" .
1296                               "<td class=\"link\">" .
1297                               $cgi->a({-href => href(action=>"blob", hash=>$to_id, hash_base=>$hash, file_name=>$file)}, "blob") .
1298                               "</td>\n";
1299
1300                 } elsif ($status eq "D") { # deleted
1301                         print "<td>" .
1302                               $cgi->a({-href => href(action=>"blob", hash=>$from_id, hash_base=>$parent, file_name=>$file),
1303                                        -class => "list"}, esc_html($file)) . "</td>\n" .
1304                               "<td><span class=\"file_status deleted\">[deleted " . file_type($from_mode). "]</span></td>\n" .
1305                               "<td class=\"link\">" .
1306                               $cgi->a({-href => href(action=>"blob", hash=>$from_id, hash_base=>$parent, file_name=>$file)}, "blob") . " | " .
1307                               $cgi->a({-href => href(action=>"history", hash_base=>$parent, file_name=>$file)}, "history") .
1308                               "</td>\n"
1309
1310                 } elsif ($status eq "M" || $status eq "T") { # modified, or type changed
1311                         my $mode_chnge = "";
1312                         if ($from_mode != $to_mode) {
1313                                 $mode_chnge = " <span class=\"file_status mode_chnge\">[changed";
1314                                 if (((oct $from_mode) & S_IFMT) != ((oct $to_mode) & S_IFMT)) {
1315                                         $mode_chnge .= " from " . file_type($from_mode) . " to " . file_type($to_mode);
1316                                 }
1317                                 if (((oct $from_mode) & 0777) != ((oct $to_mode) & 0777)) {
1318                                         if (S_ISREG($from_mode) && S_ISREG($to_mode)) {
1319                                                 $mode_chnge .= sprintf(" mode: %04o->%04o", (oct $from_mode) & 0777, (oct $to_mode) & 0777);
1320                                         } elsif (S_ISREG($to_mode)) {
1321                                                 $mode_chnge .= sprintf(" mode: %04o", (oct $to_mode) & 0777);
1322                                         }
1323                                 }
1324                                 $mode_chnge .= "]</span>\n";
1325                         }
1326                         print "<td>";
1327                         if ($to_id ne $from_id) { # modified
1328                                 print $cgi->a({-href => href(action=>"blobdiff", hash=>$to_id, hash_parent=>$from_id, hash_base=>$hash, file_name=>$file),
1329                                               -class => "list"}, esc_html($file));
1330                         } else { # mode changed
1331                                 print $cgi->a({-href => href(action=>"blob", hash=>$to_id, hash_base=>$hash, file_name=>$file),
1332                                               -class => "list"}, esc_html($file));
1333                         }
1334                         print "</td>\n" .
1335                               "<td>$mode_chnge</td>\n" .
1336                               "<td class=\"link\">" .
1337                                 $cgi->a({-href => href(action=>"blob", hash=>$to_id, hash_base=>$hash, file_name=>$file)}, "blob");
1338                         if ($to_id ne $from_id) { # modified
1339                                 print " | " . $cgi->a({-href => href(action=>"blobdiff", hash=>$to_id, hash_parent=>$from_id, hash_base=>$hash, file_name=>$file)}, "diff");
1340                         }
1341                         print " | " . $cgi->a({-href => href(action=>"history", hash_base=>$hash, file_name=>$file)}, "history") . "\n";
1342                         print "</td>\n";
1343
1344                 } elsif ($status eq "R") { # renamed
1345                         my ($from_file, $to_file) = split "\t", $file;
1346                         my $mode_chng = "";
1347                         if ($from_mode != $to_mode) {
1348                                 $mode_chng = sprintf(", mode: %04o", (oct $to_mode) & 0777);
1349                         }
1350                         print "<td>" .
1351                               $cgi->a({-href => href(action=>"blob", hash=>$to_id, hash_base=>$hash, file_name=>$to_file),
1352                                       -class => "list"}, esc_html($to_file)) . "</td>\n" .
1353                               "<td><span class=\"file_status moved\">[moved from " .
1354                               $cgi->a({-href => href(action=>"blob", hash=>$from_id, hash_base=>$parent, file_name=>$from_file),
1355                                       -class => "list"}, esc_html($from_file)) .
1356                               " with " . (int $similarity) . "% similarity$mode_chng]</span></td>\n" .
1357                               "<td class=\"link\">" .
1358                               $cgi->a({-href => href(action=>"blob", hash=>$to_id, hash_base=>$hash, file_name=>$to_file)}, "blob");
1359                         if ($to_id ne $from_id) {
1360                                 print " | " .
1361                                       $cgi->a({-href => href(action=>"blobdiff", hash=>$to_id, hash_parent=>$from_id, hash_base=>$hash, file_name=>$to_file, file_parent=>$from_file)}, "diff");
1362                         }
1363                         print "</td>\n";
1364
1365                 } elsif ($status eq "C") { # copied
1366                         my ($from_file, $to_file) = split "\t", $file;
1367                         my $mode_chng = "";
1368                         if ($from_mode != $to_mode) {
1369                                 $mode_chng = sprintf(", mode: %04o", (oct $to_mode) & 0777);
1370                         }
1371                         print "<td>" .
1372                               $cgi->a({-href => href(action=>"blob", hash=>$to_id, hash_base=>$hash, file_name=>$to_file),
1373                                       -class => "list"}, esc_html($to_file)) . "</td>\n" .
1374                               "<td><span class=\"file_status copied\">[copied from " .
1375                               $cgi->a({-href => href(action=>"blob", hash=>$from_id, hash_base=>$parent, file_name=>$from_file),
1376                                       -class => "list"}, esc_html($from_file)) .
1377                               " with " . (int $similarity) . "% similarity$mode_chng]</span></td>\n" .
1378                               "<td class=\"link\">" .
1379                               $cgi->a({-href => href(action=>"blob", hash=>$to_id, hash_base=>$hash, file_name=>$to_file)}, "blob");
1380                         if ($to_id ne $from_id) {
1381                                 print " | " .
1382                                       $cgi->a({-href => href(action=>"blobdiff", hash=>$to_id, hash_parent=>$from_id, hash_base=>$hash, file_name=>$to_file, file_parent=>$from_file)}, "diff");
1383                         }
1384                         print "</td>\n";
1385                 } # we should not encounter Unmerged (U) or Unknown (X) status
1386                 print "</tr>\n";
1387         }
1388         print "</table>\n";
1389 }
1390
1391 sub git_shortlog_body {
1392         # uses global variable $project
1393         my ($revlist, $from, $to, $refs, $extra) = @_;
1394         my $have_snapshot = git_get_project_config_bool('snapshot');
1395         $from = 0 unless defined $from;
1396         $to = $#{$revlist} if (!defined $to || $#{$revlist} < $to);
1397
1398         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
1399         my $alternate = 0;
1400         for (my $i = $from; $i <= $to; $i++) {
1401                 my $commit = $revlist->[$i];
1402                 #my $ref = defined $refs ? format_ref_marker($refs, $commit) : '';
1403                 my $ref = format_ref_marker($refs, $commit);
1404                 my %co = parse_commit($commit);
1405                 if ($alternate) {
1406                         print "<tr class=\"dark\">\n";
1407                 } else {
1408                         print "<tr class=\"light\">\n";
1409                 }
1410                 $alternate ^= 1;
1411                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
1412                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
1413                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
1414                       "<td>";
1415                 print format_subject_html($co{'title'}, $co{'title_short'}, href(action=>"commit", hash=>$commit), $ref);
1416                 print "</td>\n" .
1417                       "<td class=\"link\">" .
1418                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
1419                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
1420                 if ($have_snapshot) {
1421                         print " | " .  $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
1422                 }
1423                 print "</td>\n" .
1424                       "</tr>\n";
1425         }
1426         if (defined $extra) {
1427                 print "<tr>\n" .
1428                       "<td colspan=\"4\">$extra</td>\n" .
1429                       "</tr>\n";
1430         }
1431         print "</table>\n";
1432 }
1433
1434 sub git_history_body {
1435         # Warning: assumes constant type (blob or tree) during history
1436         my ($fd, $refs, $hash_base, $ftype, $extra) = @_;
1437
1438         print "<table class=\"history\" cellspacing=\"0\">\n";
1439         my $alternate = 0;
1440         while (my $line = <$fd>) {
1441                 if ($line !~ m/^([0-9a-fA-F]{40})/) {
1442                         next;
1443                 }
1444
1445                 my $commit = $1;
1446                 my %co = parse_commit($commit);
1447                 if (!%co) {
1448                         next;
1449                 }
1450
1451                 my $ref = format_ref_marker($refs, $commit);
1452
1453                 if ($alternate) {
1454                         print "<tr class=\"dark\">\n";
1455                 } else {
1456                         print "<tr class=\"light\">\n";
1457                 }
1458                 $alternate ^= 1;
1459                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
1460                       # shortlog uses      chop_str($co{'author_name'}, 10)
1461                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
1462                       "<td>";
1463                 # originally git_history used chop_str($co{'title'}, 50)
1464                 print format_subject_html($co{'title'}, $co{'title_short'}, href(action=>"commit", hash=>$commit), $ref);
1465                 print "</td>\n" .
1466                       "<td class=\"link\">" .
1467                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
1468                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
1469                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype);
1470
1471                 if ($ftype eq 'blob') {
1472                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
1473                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
1474                         if (defined $blob_current && defined $blob_parent &&
1475                                         $blob_current ne $blob_parent) {
1476                                 print " | " .
1477                                         $cgi->a({-href => href(action=>"blobdiff", hash=>$blob_current, hash_parent=>$blob_parent, hash_base=>$commit, file_name=>$file_name)},
1478                                                 "diff to current");
1479                         }
1480                 }
1481                 print "</td>\n" .
1482                       "</tr>\n";
1483         }
1484         if (defined $extra) {
1485                 print "<tr>\n" .
1486                       "<td colspan=\"4\">$extra</td>\n" .
1487                       "</tr>\n";
1488         }
1489         print "</table>\n";
1490 }
1491
1492 sub git_tags_body {
1493         # uses global variable $project
1494         my ($taglist, $from, $to, $extra) = @_;
1495         $from = 0 unless defined $from;
1496         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
1497
1498         print "<table class=\"tags\" cellspacing=\"0\">\n";
1499         my $alternate = 0;
1500         for (my $i = $from; $i <= $to; $i++) {
1501                 my $entry = $taglist->[$i];
1502                 my %tag = %$entry;
1503                 my $comment_lines = $tag{'comment'};
1504                 my $comment = shift @$comment_lines;
1505                 my $comment_short;
1506                 if (defined $comment) {
1507                         $comment_short = chop_str($comment, 30, 5);
1508                 }
1509                 if ($alternate) {
1510                         print "<tr class=\"dark\">\n";
1511                 } else {
1512                         print "<tr class=\"light\">\n";
1513                 }
1514                 $alternate ^= 1;
1515                 print "<td><i>$tag{'age'}</i></td>\n" .
1516                       "<td>" .
1517                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
1518                                -class => "list"}, "<b>" . esc_html($tag{'name'}) . "</b>") .
1519                       "</td>\n" .
1520                       "<td>";
1521                 if (defined $comment) {
1522                         print format_subject_html($comment, $comment_short, href(action=>"tag", hash=>$tag{'id'}));
1523                 }
1524                 print "</td>\n" .
1525                       "<td class=\"selflink\">";
1526                 if ($tag{'type'} eq "tag") {
1527                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
1528                 } else {
1529                         print "&nbsp;";
1530                 }
1531                 print "</td>\n" .
1532                       "<td class=\"link\">" . " | " .
1533                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
1534                 if ($tag{'reftype'} eq "commit") {
1535                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
1536                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'refid'})}, "log");
1537                 } elsif ($tag{'reftype'} eq "blob") {
1538                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
1539                 }
1540                 print "</td>\n" .
1541                       "</tr>";
1542         }
1543         if (defined $extra) {
1544                 print "<tr>\n" .
1545                       "<td colspan=\"5\">$extra</td>\n" .
1546                       "</tr>\n";
1547         }
1548         print "</table>\n";
1549 }
1550
1551 sub git_heads_body {
1552         # uses global variable $project
1553         my ($taglist, $head, $from, $to, $extra) = @_;
1554         $from = 0 unless defined $from;
1555         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
1556
1557         print "<table class=\"heads\" cellspacing=\"0\">\n";
1558         my $alternate = 0;
1559         for (my $i = $from; $i <= $to; $i++) {
1560                 my $entry = $taglist->[$i];
1561                 my %tag = %$entry;
1562                 my $curr = $tag{'id'} eq $head;
1563                 if ($alternate) {
1564                         print "<tr class=\"dark\">\n";
1565                 } else {
1566                         print "<tr class=\"light\">\n";
1567                 }
1568                 $alternate ^= 1;
1569                 print "<td><i>$tag{'age'}</i></td>\n" .
1570                       ($tag{'id'} eq $head ? "<td class=\"current_head\">" : "<td>") .
1571                       $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'}),
1572                                -class => "list"}, "<b>" . esc_html($tag{'name'}) . "</b>") .
1573                       "</td>\n" .
1574                       "<td class=\"link\">" .
1575                       $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") . " | " .
1576                       $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log") .
1577                       "</td>\n" .
1578                       "</tr>";
1579         }
1580         if (defined $extra) {
1581                 print "<tr>\n" .
1582                       "<td colspan=\"3\">$extra</td>\n" .
1583                       "</tr>\n";
1584         }
1585         print "</table>\n";
1586 }
1587
1588 ## ----------------------------------------------------------------------
1589 ## functions printing large fragments, format as one of arguments
1590
1591 sub git_diff_print {
1592         my $from = shift;
1593         my $from_name = shift;
1594         my $to = shift;
1595         my $to_name = shift;
1596         my $format = shift || "html";
1597
1598         my $from_tmp = "/dev/null";
1599         my $to_tmp = "/dev/null";
1600         my $pid = $$;
1601
1602         # create tmp from-file
1603         if (defined $from) {
1604                 $from_tmp = "$git_temp/gitweb_" . $$ . "_from";
1605                 open my $fd2, "> $from_tmp";
1606                 open my $fd, "-|", $GIT, "cat-file", "blob", $from;
1607                 my @file = <$fd>;
1608                 print $fd2 @file;
1609                 close $fd2;
1610                 close $fd;
1611         }
1612
1613         # create tmp to-file
1614         if (defined $to) {
1615                 $to_tmp = "$git_temp/gitweb_" . $$ . "_to";
1616                 open my $fd2, "> $to_tmp";
1617                 open my $fd, "-|", $GIT, "cat-file", "blob", $to;
1618                 my @file = <$fd>;
1619                 print $fd2 @file;
1620                 close $fd2;
1621                 close $fd;
1622         }
1623
1624         open my $fd, "-|", "/usr/bin/diff -u -p -L \'$from_name\' -L \'$to_name\' $from_tmp $to_tmp";
1625         if ($format eq "plain") {
1626                 undef $/;
1627                 print <$fd>;
1628                 $/ = "\n";
1629         } else {
1630                 while (my $line = <$fd>) {
1631                         chomp $line;
1632                         my $char = substr($line, 0, 1);
1633                         my $diff_class = "";
1634                         if ($char eq '+') {
1635                                 $diff_class = " add";
1636                         } elsif ($char eq "-") {
1637                                 $diff_class = " rem";
1638                         } elsif ($char eq "@") {
1639                                 $diff_class = " chunk_header";
1640                         } elsif ($char eq "\\") {
1641                                 # skip errors
1642                                 next;
1643                         }
1644                         $line = untabify($line);
1645                         print "<div class=\"diff$diff_class\">" . esc_html($line) . "</div>\n";
1646                 }
1647         }
1648         close $fd;
1649
1650         if (defined $from) {
1651                 unlink($from_tmp);
1652         }
1653         if (defined $to) {
1654                 unlink($to_tmp);
1655         }
1656 }
1657
1658
1659 ## ======================================================================
1660 ## ======================================================================
1661 ## actions
1662
1663 sub git_project_list {
1664         my $order = $cgi->param('o');
1665         if (defined $order && $order !~ m/project|descr|owner|age/) {
1666                 die_error(undef, "Unknown order parameter");
1667         }
1668
1669         my @list = git_get_projects_list();
1670         my @projects;
1671         if (!@list) {
1672                 die_error(undef, "No projects found");
1673         }
1674         foreach my $pr (@list) {
1675                 my $head = git_get_head_hash($pr->{'path'});
1676                 if (!defined $head) {
1677                         next;
1678                 }
1679                 $ENV{'GIT_DIR'} = "$projectroot/$pr->{'path'}";
1680                 my %co = parse_commit($head);
1681                 if (!%co) {
1682                         next;
1683                 }
1684                 $pr->{'commit'} = \%co;
1685                 if (!defined $pr->{'descr'}) {
1686                         my $descr = git_get_project_description($pr->{'path'}) || "";
1687                         $pr->{'descr'} = chop_str($descr, 25, 5);
1688                 }
1689                 if (!defined $pr->{'owner'}) {
1690                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
1691                 }
1692                 push @projects, $pr;
1693         }
1694
1695         git_header_html();
1696         if (-f $home_text) {
1697                 print "<div class=\"index_include\">\n";
1698                 open (my $fd, $home_text);
1699                 print <$fd>;
1700                 close $fd;
1701                 print "</div>\n";
1702         }
1703         print "<table class=\"project_list\">\n" .
1704               "<tr>\n";
1705         $order ||= "project";
1706         if ($order eq "project") {
1707                 @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
1708                 print "<th>Project</th>\n";
1709         } else {
1710                 print "<th>" .
1711                       $cgi->a({-href => "$my_uri?" . esc_param("o=project"),
1712                                -class => "header"}, "Project") .
1713                       "</th>\n";
1714         }
1715         if ($order eq "descr") {
1716                 @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
1717                 print "<th>Description</th>\n";
1718         } else {
1719                 print "<th>" .
1720                       $cgi->a({-href => "$my_uri?" . esc_param("o=descr"),
1721                                -class => "header"}, "Description") .
1722                       "</th>\n";
1723         }
1724         if ($order eq "owner") {
1725                 @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
1726                 print "<th>Owner</th>\n";
1727         } else {
1728                 print "<th>" .
1729                       $cgi->a({-href => "$my_uri?" . esc_param("o=owner"),
1730                                -class => "header"}, "Owner") .
1731                       "</th>\n";
1732         }
1733         if ($order eq "age") {
1734                 @projects = sort {$a->{'commit'}{'age'} <=> $b->{'commit'}{'age'}} @projects;
1735                 print "<th>Last Change</th>\n";
1736         } else {
1737                 print "<th>" .
1738                       $cgi->a({-href => "$my_uri?" . esc_param("o=age"),
1739                                -class => "header"}, "Last Change") .
1740                       "</th>\n";
1741         }
1742         print "<th></th>\n" .
1743               "</tr>\n";
1744         my $alternate = 0;
1745         foreach my $pr (@projects) {
1746                 if ($alternate) {
1747                         print "<tr class=\"dark\">\n";
1748                 } else {
1749                         print "<tr class=\"light\">\n";
1750                 }
1751                 $alternate ^= 1;
1752                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
1753                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
1754                       "<td>" . esc_html($pr->{'descr'}) . "</td>\n" .
1755                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
1756                 print "<td class=\"". age_class($pr->{'commit'}{'age'}) . "\">" .
1757                       $pr->{'commit'}{'age_string'} . "</td>\n" .
1758                       "<td class=\"link\">" .
1759                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
1760                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
1761                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") .
1762                       "</td>\n" .
1763                       "</tr>\n";
1764         }
1765         print "</table>\n";
1766         git_footer_html();
1767 }
1768
1769 sub git_summary {
1770         my $descr = git_get_project_description($project) || "none";
1771         my $head = git_get_head_hash($project);
1772         my %co = parse_commit($head);
1773         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
1774
1775         my $owner = git_get_project_owner($project);
1776
1777         my $refs = git_get_references();
1778         git_header_html();
1779         git_print_page_nav('summary','', $head);
1780
1781         print "<div class=\"title\">&nbsp;</div>\n";
1782         print "<table cellspacing=\"0\">\n" .
1783               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
1784               "<tr><td>owner</td><td>$owner</td></tr>\n" .
1785               "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
1786         # use per project git URL list in $projectroot/$project/cloneurl
1787         # or make project git URL from git base URL and project name
1788         my $url_tag = "URL";
1789         my @url_list = git_get_project_url_list($project);
1790         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
1791         foreach my $git_url (@url_list) {
1792                 next unless $git_url;
1793                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
1794                 $url_tag = "";
1795         }
1796         print "</table>\n";
1797
1798         open my $fd, "-|", $GIT, "rev-list", "--max-count=17", git_get_head_hash($project)
1799                 or die_error(undef, "Open git-rev-list failed");
1800         my @revlist = map { chomp; $_ } <$fd>;
1801         close $fd;
1802         git_print_header_div('shortlog');
1803         git_shortlog_body(\@revlist, 0, 15, $refs,
1804                           $cgi->a({-href => href(action=>"shortlog")}, "..."));
1805
1806         my $taglist = git_get_refs_list("refs/tags");
1807         if (defined @$taglist) {
1808                 git_print_header_div('tags');
1809                 git_tags_body($taglist, 0, 15,
1810                               $cgi->a({-href => href(action=>"tags")}, "..."));
1811         }
1812
1813         my $headlist = git_get_refs_list("refs/heads");
1814         if (defined @$headlist) {
1815                 git_print_header_div('heads');
1816                 git_heads_body($headlist, $head, 0, 15,
1817                                $cgi->a({-href => href(action=>"heads")}, "..."));
1818         }
1819
1820         git_footer_html();
1821 }
1822
1823 sub git_tag {
1824         my $head = git_get_head_hash($project);
1825         git_header_html();
1826         git_print_page_nav('','', $head,undef,$head);
1827         my %tag = parse_tag($hash);
1828         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
1829         print "<div class=\"title_text\">\n" .
1830               "<table cellspacing=\"0\">\n" .
1831               "<tr>\n" .
1832               "<td>object</td>\n" .
1833               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})}, $tag{'object'}) . "</td>\n" .
1834               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})}, $tag{'type'}) . "</td>\n" .
1835               "</tr>\n";
1836         if (defined($tag{'author'})) {
1837                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
1838                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
1839                 print "<tr><td></td><td>" . $ad{'rfc2822'} . sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) . "</td></tr>\n";
1840         }
1841         print "</table>\n\n" .
1842               "</div>\n";
1843         print "<div class=\"page_body\">";
1844         my $comment = $tag{'comment'};
1845         foreach my $line (@$comment) {
1846                 print esc_html($line) . "<br/>\n";
1847         }
1848         print "</div>\n";
1849         git_footer_html();
1850 }
1851
1852 sub git_blame2 {
1853         my $fd;
1854         my $ftype;
1855         die_error(undef, "Permission denied") if (!git_get_project_config_bool ('blame'));
1856         die_error('404 Not Found', "File name not defined") if (!$file_name);
1857         $hash_base ||= git_get_head_hash($project);
1858         die_error(undef, "Couldn't find base commit") unless ($hash_base);
1859         my %co = parse_commit($hash_base)
1860                 or die_error(undef, "Reading commit failed");
1861         if (!defined $hash) {
1862                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
1863                         or die_error(undef, "Error looking up file");
1864         }
1865         $ftype = git_get_type($hash);
1866         if ($ftype !~ "blob") {
1867                 die_error("400 Bad Request", "Object is not a blob");
1868         }
1869         open ($fd, "-|", $GIT, "blame", '-l', $file_name, $hash_base)
1870                 or die_error(undef, "Open git-blame failed");
1871         git_header_html();
1872         my $formats_nav =
1873                 $cgi->a({-href => href(action=>"blobl", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)}, "blob") .
1874                 " | " . $cgi->a({-href => href(action=>"blame", file_name=>$file_name)}, "head");
1875         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
1876         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
1877         git_print_page_path($file_name, $ftype);
1878         my @rev_color = (qw(light2 dark2));
1879         my $num_colors = scalar(@rev_color);
1880         my $current_color = 0;
1881         my $last_rev;
1882         print "<div class=\"page_body\">\n";
1883         print "<table class=\"blame\">\n";
1884         print "<tr><th>Commit</th><th>Line</th><th>Data</th></tr>\n";
1885         while (<$fd>) {
1886                 /^([0-9a-fA-F]{40}).*?(\d+)\)\s{1}(\s*.*)/;
1887                 my $full_rev = $1;
1888                 my $rev = substr($full_rev, 0, 8);
1889                 my $lineno = $2;
1890                 my $data = $3;
1891
1892                 if (!defined $last_rev) {
1893                         $last_rev = $full_rev;
1894                 } elsif ($last_rev ne $full_rev) {
1895                         $last_rev = $full_rev;
1896                         $current_color = ++$current_color % $num_colors;
1897                 }
1898                 print "<tr class=\"$rev_color[$current_color]\">\n";
1899                 print "<td class=\"sha1\">" .
1900                         $cgi->a({-href => href(action=>"commit", hash=>$full_rev, file_name=>$file_name)}, esc_html($rev)) . "</td>\n";
1901                 print "<td class=\"linenr\"><a id=\"l$lineno\" href=\"#l$lineno\" class=\"linenr\">" . esc_html($lineno) . "</a></td>\n";
1902                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
1903                 print "</tr>\n";
1904         }
1905         print "</table>\n";
1906         print "</div>";
1907         close $fd or print "Reading blob failed\n";
1908         git_footer_html();
1909 }
1910
1911 sub git_blame {
1912         my $fd;
1913         die_error('403 Permission denied', "Permission denied") if (!git_get_project_config_bool ('blame'));
1914         die_error('404 Not Found', "File name not defined") if (!$file_name);
1915         $hash_base ||= git_get_head_hash($project);
1916         die_error(undef, "Couldn't find base commit") unless ($hash_base);
1917         my %co = parse_commit($hash_base)
1918                 or die_error(undef, "Reading commit failed");
1919         if (!defined $hash) {
1920                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
1921                         or die_error(undef, "Error lookup file");
1922         }
1923         open ($fd, "-|", $GIT, "annotate", '-l', '-t', '-r', $file_name, $hash_base)
1924                 or die_error(undef, "Open git-annotate failed");
1925         git_header_html();
1926         my $formats_nav =
1927                 $cgi->a({-href => href(action=>"blobl", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)}, "blob") .
1928                 " | " . $cgi->a({-href => href(action=>"blame", file_name=>$file_name)}, "head");
1929         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
1930         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
1931         git_print_page_path($file_name, 'blob');
1932         print "<div class=\"page_body\">\n";
1933         print <<HTML;
1934 <table class="blame">
1935   <tr>
1936     <th>Commit</th>
1937     <th>Age</th>
1938     <th>Author</th>
1939     <th>Line</th>
1940     <th>Data</th>
1941   </tr>
1942 HTML
1943         my @line_class = (qw(light dark));
1944         my $line_class_len = scalar (@line_class);
1945         my $line_class_num = $#line_class;
1946         while (my $line = <$fd>) {
1947                 my $long_rev;
1948                 my $short_rev;
1949                 my $author;
1950                 my $time;
1951                 my $lineno;
1952                 my $data;
1953                 my $age;
1954                 my $age_str;
1955                 my $age_class;
1956
1957                 chomp $line;
1958                 $line_class_num = ($line_class_num + 1) % $line_class_len;
1959
1960                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) \+\d\d\d\d\t(\d+)\)(.*)$/) {
1961                         $long_rev = $1;
1962                         $author   = $2;
1963                         $time     = $3;
1964                         $lineno   = $4;
1965                         $data     = $5;
1966                 } else {
1967                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
1968                         next;
1969                 }
1970                 $short_rev  = substr ($long_rev, 0, 8);
1971                 $age        = time () - $time;
1972                 $age_str    = age_string ($age);
1973                 $age_str    =~ s/ /&nbsp;/g;
1974                 $age_class  = age_class($age);
1975                 $author     = esc_html ($author);
1976                 $author     =~ s/ /&nbsp;/g;
1977
1978                 $data = untabify($data);
1979                 $data = esc_html ($data);
1980
1981                 print <<HTML;
1982   <tr class="$line_class[$line_class_num]">
1983     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
1984     <td class="$age_class">$age_str</td>
1985     <td>$author</td>
1986     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
1987     <td class="pre">$data</td>
1988   </tr>
1989 HTML
1990         } # while (my $line = <$fd>)
1991         print "</table>\n\n";
1992         close $fd or print "Reading blob failed.\n";
1993         print "</div>";
1994         git_footer_html();
1995 }
1996
1997 sub git_tags {
1998         my $head = git_get_head_hash($project);
1999         git_header_html();
2000         git_print_page_nav('','', $head,undef,$head);
2001         git_print_header_div('summary', $project);
2002
2003         my $taglist = git_get_refs_list("refs/tags");
2004         if (defined @$taglist) {
2005                 git_tags_body($taglist);
2006         }
2007         git_footer_html();
2008 }
2009
2010 sub git_heads {
2011         my $head = git_get_head_hash($project);
2012         git_header_html();
2013         git_print_page_nav('','', $head,undef,$head);
2014         git_print_header_div('summary', $project);
2015
2016         my $taglist = git_get_refs_list("refs/heads");
2017         if (defined @$taglist) {
2018                 git_heads_body($taglist, $head);
2019         }
2020         git_footer_html();
2021 }
2022
2023 sub git_blob_plain {
2024         if (!defined $hash) {
2025                 if (defined $file_name) {
2026                         my $base = $hash_base || git_get_head_hash($project);
2027                         $hash = git_get_hash_by_path($base, $file_name, "blob")
2028                                 or die_error(undef, "Error lookup file");
2029                 } else {
2030                         die_error(undef, "No file name defined");
2031                 }
2032         }
2033         my $type = shift;
2034         open my $fd, "-|", $GIT, "cat-file", "blob", $hash
2035                 or die_error(undef, "Couldn't cat $file_name, $hash");
2036
2037         $type ||= blob_mimetype($fd, $file_name);
2038
2039         # save as filename, even when no $file_name is given
2040         my $save_as = "$hash";
2041         if (defined $file_name) {
2042                 $save_as = $file_name;
2043         } elsif ($type =~ m/^text\//) {
2044                 $save_as .= '.txt';
2045         }
2046
2047         print $cgi->header(-type => "$type", '-content-disposition' => "inline; filename=\"$save_as\"");
2048         undef $/;
2049         binmode STDOUT, ':raw';
2050         print <$fd>;
2051         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
2052         $/ = "\n";
2053         close $fd;
2054 }
2055
2056 sub git_blob {
2057         if (!defined $hash) {
2058                 if (defined $file_name) {
2059                         my $base = $hash_base || git_get_head_hash($project);
2060                         $hash = git_get_hash_by_path($base, $file_name, "blob")
2061                                 or die_error(undef, "Error lookup file");
2062                 } else {
2063                         die_error(undef, "No file name defined");
2064                 }
2065         }
2066         my $have_blame = git_get_project_config_bool ('blame');
2067         open my $fd, "-|", $GIT, "cat-file", "blob", $hash
2068                 or die_error(undef, "Couldn't cat $file_name, $hash");
2069         my $mimetype = blob_mimetype($fd, $file_name);
2070         if ($mimetype !~ m/^text\//) {
2071                 close $fd;
2072                 return git_blob_plain($mimetype);
2073         }
2074         git_header_html();
2075         my $formats_nav = '';
2076         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
2077                 if (defined $file_name) {
2078                         if ($have_blame) {
2079                                 $formats_nav .= $cgi->a({-href => href(action=>"blame", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)}, "blame") . " | ";
2080                         }
2081                         $formats_nav .=
2082                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash, file_name=>$file_name)}, "plain") .
2083                                 " | " . $cgi->a({-href => href(action=>"blob", hash_base=>"HEAD", file_name=>$file_name)}, "head");
2084                 } else {
2085                         $formats_nav .= $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "plain");
2086                 }
2087                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2088                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2089         } else {
2090                 print "<div class=\"page_nav\">\n" .
2091                       "<br/><br/></div>\n" .
2092                       "<div class=\"title\">$hash</div>\n";
2093         }
2094         git_print_page_path($file_name, "blob");
2095         print "<div class=\"page_body\">\n";
2096         my $nr;
2097         while (my $line = <$fd>) {
2098                 chomp $line;
2099                 $nr++;
2100                 $line = untabify($line);
2101                 printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n", $nr, $nr, $nr, esc_html($line);
2102         }
2103         close $fd or print "Reading blob failed.\n";
2104         print "</div>";
2105         git_footer_html();
2106 }
2107
2108 sub git_tree {
2109         if (!defined $hash) {
2110                 $hash = git_get_head_hash($project);
2111                 if (defined $file_name) {
2112                         my $base = $hash_base || $hash;
2113                         $hash = git_get_hash_by_path($base, $file_name, "tree");
2114                 }
2115                 if (!defined $hash_base) {
2116                         $hash_base = $hash;
2117                 }
2118         }
2119         $/ = "\0";
2120         open my $fd, "-|", $GIT, "ls-tree", '-z', $hash
2121                 or die_error(undef, "Open git-ls-tree failed");
2122         my @entries = map { chomp; $_ } <$fd>;
2123         close $fd or die_error(undef, "Reading tree failed");
2124         $/ = "\n";
2125
2126         my $refs = git_get_references();
2127         my $ref = format_ref_marker($refs, $hash_base);
2128         git_header_html();
2129         my %base_key = ();
2130         my $base = "";
2131         my $have_blame = git_get_project_config_bool ('blame');
2132         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
2133                 $base_key{hash_base} = $hash_base;
2134                 git_print_page_nav('tree','', $hash_base);
2135                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
2136         } else {
2137                 print "<div class=\"page_nav\">\n";
2138                 print "<br/><br/></div>\n";
2139                 print "<div class=\"title\">$hash</div>\n";
2140         }
2141         if (defined $file_name) {
2142                 $base = esc_html("$file_name/");
2143         }
2144         git_print_page_path($file_name, 'tree');
2145         print "<div class=\"page_body\">\n";
2146         print "<table cellspacing=\"0\">\n";
2147         my $alternate = 0;
2148         foreach my $line (@entries) {
2149                 #'100644        blob    0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa        panic.c'
2150                 $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/;
2151                 my $t_mode = $1;
2152                 my $t_type = $2;
2153                 my $t_hash = $3;
2154                 my $t_name = validate_input($4);
2155                 if ($alternate) {
2156                         print "<tr class=\"dark\">\n";
2157                 } else {
2158                         print "<tr class=\"light\">\n";
2159                 }
2160                 $alternate ^= 1;
2161                 print "<td class=\"mode\">" . mode_str($t_mode) . "</td>\n";
2162                 if ($t_type eq "blob") {
2163                         print "<td class=\"list\">" .
2164                               $cgi->a({-href => href(action=>"blob", hash=>$t_hash, file_name=>"$base$t_name", %base_key), -class => "list"}, esc_html($t_name)) .
2165                               "</td>\n" .
2166                               "<td class=\"link\">" .
2167                               $cgi->a({-href => href(action=>"blob", hash=>$t_hash, file_name=>"$base$t_name", %base_key)}, "blob");
2168                         if ($have_blame) {
2169                                 print " | " . $cgi->a({-href => href(action=>"blame", hash=>$t_hash, file_name=>"$base$t_name", %base_key)}, "blame");
2170                         }
2171                         print " | " . $cgi->a({-href => href(action=>"history", hash=>$t_hash, hash_base=>$hash_base, file_name=>"$base$t_name")}, "history") .
2172                               " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$t_hash, file_name=>"$base$t_name")}, "raw") .
2173                               "</td>\n";
2174                 } elsif ($t_type eq "tree") {
2175                         print "<td class=\"list\">" .
2176                               $cgi->a({-href => href(action=>"tree", hash=>$t_hash, file_name=>"$base$t_name", %base_key)}, esc_html($t_name)) .
2177                               "</td>\n" .
2178                               "<td class=\"link\">" .
2179                               $cgi->a({-href => href(action=>"tree", hash=>$t_hash, file_name=>"$base$t_name", %base_key)}, "tree") .
2180                               " | " . $cgi->a({-href => href(action=>"history", hash_base=>$hash_base, file_name=>"$base$t_name")}, "history") .
2181                               "</td>\n";
2182                 }
2183                 print "</tr>\n";
2184         }
2185         print "</table>\n" .
2186               "</div>";
2187         git_footer_html();
2188 }
2189
2190 sub git_snapshot {
2191
2192         if (!defined $hash) {
2193                 $hash = git_get_head_hash($project);
2194         }
2195
2196         my $filename = basename($project) . "-$hash.tar.gz";
2197
2198         print $cgi->header(-type => 'application/x-tar',
2199                         -content-encoding => 'gzip',
2200                         '-content-disposition' => "inline; filename=\"$filename\"",
2201                         -status => '200 OK');
2202
2203         open my $fd, "-|", "$GIT tar-tree $hash \'$project\' | gzip" or
2204                                 die_error(undef, "Execute git-tar-tree failed.");
2205         binmode STDOUT, ':raw';
2206         print <$fd>;
2207         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
2208         close $fd;
2209
2210
2211 }
2212
2213 sub git_log {
2214         my $head = git_get_head_hash($project);
2215         if (!defined $hash) {
2216                 $hash = $head;
2217         }
2218         if (!defined $page) {
2219                 $page = 0;
2220         }
2221         my $refs = git_get_references();
2222
2223         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
2224         open my $fd, "-|", $GIT, "rev-list", $limit, $hash
2225                 or die_error(undef, "Open git-rev-list failed");
2226         my @revlist = map { chomp; $_ } <$fd>;
2227         close $fd;
2228
2229         my $paging_nav = format_paging_nav('log', $hash, $head, $page, $#revlist);
2230
2231         git_header_html();
2232         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
2233
2234         if (!@revlist) {
2235                 my %co = parse_commit($hash);
2236
2237                 git_print_header_div('summary', $project);
2238                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
2239         }
2240         for (my $i = ($page * 100); $i <= $#revlist; $i++) {
2241                 my $commit = $revlist[$i];
2242                 my $ref = format_ref_marker($refs, $commit);
2243                 my %co = parse_commit($commit);
2244                 next if !%co;
2245                 my %ad = parse_date($co{'author_epoch'});
2246                 git_print_header_div('commit',
2247                                "<span class=\"age\">$co{'age_string'}</span>" .
2248                                esc_html($co{'title'}) . $ref,
2249                                $commit);
2250                 print "<div class=\"title_text\">\n" .
2251                       "<div class=\"log_link\">\n" .
2252                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
2253                       " | " . $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
2254                       "<br/>\n" .
2255                       "</div>\n" .
2256                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
2257                       "</div>\n";
2258
2259                 print "<div class=\"log_body\">\n";
2260                 git_print_simplified_log($co{'comment'});
2261                 print "</div>\n";
2262         }
2263         git_footer_html();
2264 }
2265
2266 sub git_commit {
2267         my %co = parse_commit($hash);
2268         if (!%co) {
2269                 die_error(undef, "Unknown commit object");
2270         }
2271         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
2272         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
2273
2274         my $parent = $co{'parent'};
2275         if (!defined $parent) {
2276                 $parent = "--root";
2277         }
2278         open my $fd, "-|", $GIT, "diff-tree", '-r', '-M', $parent, $hash
2279                 or die_error(undef, "Open git-diff-tree failed");
2280         my @difftree = map { chomp; $_ } <$fd>;
2281         close $fd or die_error(undef, "Reading git-diff-tree failed");
2282
2283         # non-textual hash id's can be cached
2284         my $expires;
2285         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2286                 $expires = "+1d";
2287         }
2288         my $refs = git_get_references();
2289         my $ref = format_ref_marker($refs, $co{'id'});
2290         my $have_snapshot = git_get_project_config_bool('snapshot');
2291         my $formats_nav = '';
2292         if (defined $file_name && defined $co{'parent'}) {
2293                 my $parent = $co{'parent'};
2294                 $formats_nav .= $cgi->a({-href => href(action=>"blame", hash_parent=>$parent, file_name=>$file_name)}, "blame");
2295         }
2296         git_header_html(undef, $expires);
2297         git_print_page_nav('commit', defined $co{'parent'} ? '' : 'commitdiff',
2298                      $hash, $co{'tree'}, $hash,
2299                      $formats_nav);
2300
2301         if (defined $co{'parent'}) {
2302                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
2303         } else {
2304                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
2305         }
2306         print "<div class=\"title_text\">\n" .
2307               "<table cellspacing=\"0\">\n";
2308         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
2309               "<tr>" .
2310               "<td></td><td> $ad{'rfc2822'}";
2311         if ($ad{'hour_local'} < 6) {
2312                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2313         } else {
2314                 printf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2315         }
2316         print "</td>" .
2317               "</tr>\n";
2318         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
2319         print "<tr><td></td><td> $cd{'rfc2822'}" . sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) . "</td></tr>\n";
2320         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
2321         print "<tr>" .
2322               "<td>tree</td>" .
2323               "<td class=\"sha1\">" .
2324               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash), class => "list"}, $co{'tree'}) .
2325               "</td>" .
2326               "<td class=\"link\">" . $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)}, "tree");
2327         if ($have_snapshot) {
2328                 print " | " .  $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
2329         }
2330         print "</td>" .
2331               "</tr>\n";
2332         my $parents = $co{'parents'};
2333         foreach my $par (@$parents) {
2334                 print "<tr>" .
2335                       "<td>parent</td>" .
2336                       "<td class=\"sha1\">" . $cgi->a({-href => href(action=>"commit", hash=>$par), class => "list"}, $par) . "</td>" .
2337                       "<td class=\"link\">" .
2338                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
2339                       " | " . $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "commitdiff") .
2340                       "</td>" .
2341                       "</tr>\n";
2342         }
2343         print "</table>".
2344               "</div>\n";
2345
2346         print "<div class=\"page_body\">\n";
2347         git_print_log($co{'comment'});
2348         print "</div>\n";
2349
2350         git_difftree_body(\@difftree, $parent);
2351
2352         git_footer_html();
2353 }
2354
2355 sub git_blobdiff {
2356         mkdir($git_temp, 0700);
2357         git_header_html();
2358         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
2359                 my $formats_nav =
2360                         $cgi->a({-href => href(action=>"blobdiff_plain", hash=>$hash, hash_parent=>$hash_parent)}, "plain");
2361                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2362                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2363         } else {
2364                 print "<div class=\"page_nav\">\n" .
2365                       "<br/><br/></div>\n" .
2366                       "<div class=\"title\">$hash vs $hash_parent</div>\n";
2367         }
2368         git_print_page_path($file_name, "blob");
2369         print "<div class=\"page_body\">\n" .
2370               "<div class=\"diff_info\">blob:" .
2371               $cgi->a({-href => href(action=>"blob", hash=>$hash_parent, hash_base=>$hash_base, file_name=>($file_parent || $file_name))}, $hash_parent) .
2372               " -> blob:" .
2373               $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)}, $hash) .
2374               "</div>\n";
2375         git_diff_print($hash_parent, $file_name || $hash_parent, $hash, $file_name || $hash);
2376         print "</div>";
2377         git_footer_html();
2378 }
2379
2380 sub git_blobdiff_plain {
2381         mkdir($git_temp, 0700);
2382         print $cgi->header(-type => "text/plain", -charset => 'utf-8');
2383         git_diff_print($hash_parent, $file_name || $hash_parent, $hash, $file_name || $hash, "plain");
2384 }
2385
2386 sub git_commitdiff {
2387         mkdir($git_temp, 0700);
2388         my %co = parse_commit($hash);
2389         if (!%co) {
2390                 die_error(undef, "Unknown commit object");
2391         }
2392         if (!defined $hash_parent) {
2393                 $hash_parent = $co{'parent'} || '--root';
2394         }
2395         open my $fd, "-|", $GIT, "diff-tree", '-r', $hash_parent, $hash
2396                 or die_error(undef, "Open git-diff-tree failed");
2397         my @difftree = map { chomp; $_ } <$fd>;
2398         close $fd or die_error(undef, "Reading git-diff-tree failed");
2399
2400         # non-textual hash id's can be cached
2401         my $expires;
2402         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2403                 $expires = "+1d";
2404         }
2405         my $refs = git_get_references();
2406         my $ref = format_ref_marker($refs, $co{'id'});
2407         my $formats_nav =
2408                 $cgi->a({-href => href(action=>"commitdiff_plain", hash=>$hash, hash_parent=>$hash_parent)}, "plain");
2409         git_header_html(undef, $expires);
2410         git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
2411         git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
2412         print "<div class=\"page_body\">\n";
2413         git_print_simplified_log($co{'comment'}, 1); # skip title
2414         print "<br/>\n";
2415         foreach my $line (@difftree) {
2416                 # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M      ls-files.c'
2417                 # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M      rev-tree.c'
2418                 if ($line !~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
2419                         next;
2420                 }
2421                 my $from_mode = $1;
2422                 my $to_mode = $2;
2423                 my $from_id = $3;
2424                 my $to_id = $4;
2425                 my $status = $5;
2426                 my $file = validate_input(unquote($6));
2427                 if ($status eq "A") {
2428                         print "<div class=\"diff_info\">" . file_type($to_mode) . ":" .
2429                               $cgi->a({-href => href(action=>"blob", hash=>$to_id, hash_base=>$hash, file_name=>$file)}, $to_id) . "(new)" .
2430                               "</div>\n";
2431                         git_diff_print(undef, "/dev/null", $to_id, "b/$file");
2432                 } elsif ($status eq "D") {
2433                         print "<div class=\"diff_info\">" . file_type($from_mode) . ":" .
2434                               $cgi->a({-href => href(action=>"blob", hash=>$from_id, hash_base=>$hash_parent, file_name=>$file)}, $from_id) . "(deleted)" .
2435                               "</div>\n";
2436                         git_diff_print($from_id, "a/$file", undef, "/dev/null");
2437                 } elsif ($status eq "M") {
2438                         if ($from_id ne $to_id) {
2439                                 print "<div class=\"diff_info\">" .
2440                                       file_type($from_mode) . ":" .
2441                                       $cgi->a({-href => href(action=>"blob", hash=>$from_id, hash_base=>$hash_parent, file_name=>$file)}, $from_id) .
2442                                       " -> " .
2443                                       file_type($to_mode) . ":" .
2444                                       $cgi->a({-href => href(action=>"blob", hash=>$to_id, hash_base=>$hash, file_name=>$file)}, $to_id);
2445                                 print "</div>\n";
2446                                 git_diff_print($from_id, "a/$file",  $to_id, "b/$file");
2447                         }
2448                 }
2449         }
2450         print "<br/>\n" .
2451               "</div>";
2452         git_footer_html();
2453 }
2454
2455 sub git_commitdiff_plain {
2456         mkdir($git_temp, 0700);
2457         my %co = parse_commit($hash);
2458         if (!%co) {
2459                 die_error(undef, "Unknown commit object");
2460         }
2461         if (!defined $hash_parent) {
2462                 $hash_parent = $co{'parent'} || '--root';
2463         }
2464         open my $fd, "-|", $GIT, "diff-tree", '-r', $hash_parent, $hash
2465                 or die_error(undef, "Open git-diff-tree failed");
2466         my @difftree = map { chomp; $_ } <$fd>;
2467         close $fd or die_error(undef, "Reading diff-tree failed");
2468
2469         # try to figure out the next tag after this commit
2470         my $tagname;
2471         my $refs = git_get_references("tags");
2472         open $fd, "-|", $GIT, "rev-list", "HEAD";
2473         my @commits = map { chomp; $_ } <$fd>;
2474         close $fd;
2475         foreach my $commit (@commits) {
2476                 if (defined $refs->{$commit}) {
2477                         $tagname = $refs->{$commit}
2478                 }
2479                 if ($commit eq $hash) {
2480                         last;
2481                 }
2482         }
2483
2484         print $cgi->header(-type => "text/plain", -charset => 'utf-8', '-content-disposition' => "inline; filename=\"git-$hash.patch\"");
2485         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
2486         my $comment = $co{'comment'};
2487         print "From: $co{'author'}\n" .
2488               "Date: $ad{'rfc2822'} ($ad{'tz_local'})\n".
2489               "Subject: $co{'title'}\n";
2490         if (defined $tagname) {
2491                 print "X-Git-Tag: $tagname\n";
2492         }
2493         print "X-Git-Url: $my_url?p=$project;a=commitdiff;h=$hash\n" .
2494               "\n";
2495
2496         foreach my $line (@$comment) {;
2497                 print "$line\n";
2498         }
2499         print "---\n\n";
2500
2501         foreach my $line (@difftree) {
2502                 if ($line !~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
2503                         next;
2504                 }
2505                 my $from_id = $3;
2506                 my $to_id = $4;
2507                 my $status = $5;
2508                 my $file = $6;
2509                 if ($status eq "A") {
2510                         git_diff_print(undef, "/dev/null", $to_id, "b/$file", "plain");
2511                 } elsif ($status eq "D") {
2512                         git_diff_print($from_id, "a/$file", undef, "/dev/null", "plain");
2513                 } elsif ($status eq "M") {
2514                         git_diff_print($from_id, "a/$file",  $to_id, "b/$file", "plain");
2515                 }
2516         }
2517 }
2518
2519 sub git_history {
2520         if (!defined $hash_base) {
2521                 $hash_base = git_get_head_hash($project);
2522         }
2523         my $ftype;
2524         my %co = parse_commit($hash_base);
2525         if (!%co) {
2526                 die_error(undef, "Unknown commit object");
2527         }
2528         my $refs = git_get_references();
2529         git_header_html();
2530         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base);
2531         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2532         if (!defined $hash && defined $file_name) {
2533                 $hash = git_get_hash_by_path($hash_base, $file_name);
2534         }
2535         if (defined $hash) {
2536                 $ftype = git_get_type($hash);
2537         }
2538         git_print_page_path($file_name, $ftype);
2539
2540         open my $fd, "-|",
2541                 $GIT, "rev-list", "--full-history", $hash_base, "--", $file_name;
2542         git_history_body($fd, $refs, $hash_base, $ftype);
2543
2544         close $fd;
2545         git_footer_html();
2546 }
2547
2548 sub git_search {
2549         if (!defined $searchtext) {
2550                 die_error(undef, "Text field empty");
2551         }
2552         if (!defined $hash) {
2553                 $hash = git_get_head_hash($project);
2554         }
2555         my %co = parse_commit($hash);
2556         if (!%co) {
2557                 die_error(undef, "Unknown commit object");
2558         }
2559         # pickaxe may take all resources of your box and run for several minutes
2560         # with every query - so decide by yourself how public you make this feature :)
2561         my $commit_search = 1;
2562         my $author_search = 0;
2563         my $committer_search = 0;
2564         my $pickaxe_search = 0;
2565         if ($searchtext =~ s/^author\\://i) {
2566                 $author_search = 1;
2567         } elsif ($searchtext =~ s/^committer\\://i) {
2568                 $committer_search = 1;
2569         } elsif ($searchtext =~ s/^pickaxe\\://i) {
2570                 $commit_search = 0;
2571                 $pickaxe_search = 1;
2572         }
2573         git_header_html();
2574         git_print_page_nav('','', $hash,$co{'tree'},$hash);
2575         git_print_header_div('commit', esc_html($co{'title'}), $hash);
2576
2577         print "<table cellspacing=\"0\">\n";
2578         my $alternate = 0;
2579         if ($commit_search) {
2580                 $/ = "\0";
2581                 open my $fd, "-|", $GIT, "rev-list", "--header", "--parents", $hash or next;
2582                 while (my $commit_text = <$fd>) {
2583                         if (!grep m/$searchtext/i, $commit_text) {
2584                                 next;
2585                         }
2586                         if ($author_search && !grep m/\nauthor .*$searchtext/i, $commit_text) {
2587                                 next;
2588                         }
2589                         if ($committer_search && !grep m/\ncommitter .*$searchtext/i, $commit_text) {
2590                                 next;
2591                         }
2592                         my @commit_lines = split "\n", $commit_text;
2593                         my %co = parse_commit(undef, \@commit_lines);
2594                         if (!%co) {
2595                                 next;
2596                         }
2597                         if ($alternate) {
2598                                 print "<tr class=\"dark\">\n";
2599                         } else {
2600                                 print "<tr class=\"light\">\n";
2601                         }
2602                         $alternate ^= 1;
2603                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2604                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
2605                               "<td>" .
2606                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}) -class => "list"}, "<b>" . esc_html(chop_str($co{'title'}, 50)) . "</b><br/>");
2607                         my $comment = $co{'comment'};
2608                         foreach my $line (@$comment) {
2609                                 if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
2610                                         my $lead = esc_html($1) || "";
2611                                         $lead = chop_str($lead, 30, 10);
2612                                         my $match = esc_html($2) || "";
2613                                         my $trail = esc_html($3) || "";
2614                                         $trail = chop_str($trail, 30, 10);
2615                                         my $text = "$lead<span class=\"match\">$match</span>$trail";
2616                                         print chop_str($text, 80, 5) . "<br/>\n";
2617                                 }
2618                         }
2619                         print "</td>\n" .
2620                               "<td class=\"link\">" .
2621                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
2622                               " | " . $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
2623                         print "</td>\n" .
2624                               "</tr>\n";
2625                 }
2626                 close $fd;
2627         }
2628
2629         if ($pickaxe_search) {
2630                 $/ = "\n";
2631                 open my $fd, "-|", "$GIT rev-list $hash | $GIT diff-tree -r --stdin -S\'$searchtext\'";
2632                 undef %co;
2633                 my @files;
2634                 while (my $line = <$fd>) {
2635                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
2636                                 my %set;
2637                                 $set{'file'} = $6;
2638                                 $set{'from_id'} = $3;
2639                                 $set{'to_id'} = $4;
2640                                 $set{'id'} = $set{'to_id'};
2641                                 if ($set{'id'} =~ m/0{40}/) {
2642                                         $set{'id'} = $set{'from_id'};
2643                                 }
2644                                 if ($set{'id'} =~ m/0{40}/) {
2645                                         next;
2646                                 }
2647                                 push @files, \%set;
2648                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
2649                                 if (%co) {
2650                                         if ($alternate) {
2651                                                 print "<tr class=\"dark\">\n";
2652                                         } else {
2653                                                 print "<tr class=\"light\">\n";
2654                                         }
2655                                         $alternate ^= 1;
2656                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2657                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
2658                                               "<td>" .
2659                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list"}, "<b>" .
2660                                               esc_html(chop_str($co{'title'}, 50)) . "</b><br/>");
2661                                         while (my $setref = shift @files) {
2662                                                 my %set = %$setref;
2663                                                 print $cgi->a({-href => href(action=>"blob", hash=>$set{'id'}, hash_base=>$co{'id'}, file_name=>$set{'file'}), class => "list"},
2664                                                       "<span class=\"match\">" . esc_html($set{'file'}) . "</span>") .
2665                                                       "<br/>\n";
2666                                         }
2667                                         print "</td>\n" .
2668                                               "<td class=\"link\">" .
2669                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
2670                                               " | " . $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
2671                                         print "</td>\n" .
2672                                               "</tr>\n";
2673                                 }
2674                                 %co = parse_commit($1);
2675                         }
2676                 }
2677                 close $fd;
2678         }
2679         print "</table>\n";
2680         git_footer_html();
2681 }
2682
2683 sub git_shortlog {
2684         my $head = git_get_head_hash($project);
2685         if (!defined $hash) {
2686                 $hash = $head;
2687         }
2688         if (!defined $page) {
2689                 $page = 0;
2690         }
2691         my $refs = git_get_references();
2692
2693         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
2694         open my $fd, "-|", $GIT, "rev-list", $limit, $hash
2695                 or die_error(undef, "Open git-rev-list failed");
2696         my @revlist = map { chomp; $_ } <$fd>;
2697         close $fd;
2698
2699         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, $#revlist);
2700         my $next_link = '';
2701         if ($#revlist >= (100 * ($page+1)-1)) {
2702                 $next_link =
2703                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
2704                                  -title => "Alt-n"}, "next");
2705         }
2706
2707
2708         git_header_html();
2709         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
2710         git_print_header_div('summary', $project);
2711
2712         git_shortlog_body(\@revlist, ($page * 100), $#revlist, $refs, $next_link);
2713
2714         git_footer_html();
2715 }
2716
2717 ## ......................................................................
2718 ## feeds (RSS, OPML)
2719
2720 sub git_rss {
2721         # http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
2722         open my $fd, "-|", $GIT, "rev-list", "--max-count=150", git_get_head_hash($project)
2723                 or die_error(undef, "Open git-rev-list failed");
2724         my @revlist = map { chomp; $_ } <$fd>;
2725         close $fd or die_error(undef, "Reading git-rev-list failed");
2726         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
2727         print "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n".
2728               "<rss version=\"2.0\" xmlns:content=\"http://purl.org/rss/1.0/modules/content/\">\n";
2729         print "<channel>\n";
2730         print "<title>$project</title>\n".
2731               "<link>" . esc_html("$my_url?p=$project;a=summary") . "</link>\n".
2732               "<description>$project log</description>\n".
2733               "<language>en</language>\n";
2734
2735         for (my $i = 0; $i <= $#revlist; $i++) {
2736                 my $commit = $revlist[$i];
2737                 my %co = parse_commit($commit);
2738                 # we read 150, we always show 30 and the ones more recent than 48 hours
2739                 if (($i >= 20) && ((time - $co{'committer_epoch'}) > 48*60*60)) {
2740                         last;
2741                 }
2742                 my %cd = parse_date($co{'committer_epoch'});
2743                 open $fd, "-|", $GIT, "diff-tree", '-r', $co{'parent'}, $co{'id'} or next;
2744                 my @difftree = map { chomp; $_ } <$fd>;
2745                 close $fd or next;
2746                 print "<item>\n" .
2747                       "<title>" .
2748                       sprintf("%d %s %02d:%02d", $cd{'mday'}, $cd{'month'}, $cd{'hour'}, $cd{'minute'}) . " - " . esc_html($co{'title'}) .
2749                       "</title>\n" .
2750                       "<author>" . esc_html($co{'author'}) . "</author>\n" .
2751                       "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
2752                       "<guid isPermaLink=\"true\">" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</guid>\n" .
2753                       "<link>" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</link>\n" .
2754                       "<description>" . esc_html($co{'title'}) . "</description>\n" .
2755                       "<content:encoded>" .
2756                       "<![CDATA[\n";
2757                 my $comment = $co{'comment'};
2758                 foreach my $line (@$comment) {
2759                         $line = decode("utf8", $line, Encode::FB_DEFAULT);
2760                         print "$line<br/>\n";
2761                 }
2762                 print "<br/>\n";
2763                 foreach my $line (@difftree) {
2764                         if (!($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/)) {
2765                                 next;
2766                         }
2767                         my $file = validate_input(unquote($7));
2768                         $file = decode("utf8", $file, Encode::FB_DEFAULT);
2769                         print "$file<br/>\n";
2770                 }
2771                 print "]]>\n" .
2772                       "</content:encoded>\n" .
2773                       "</item>\n";
2774         }
2775         print "</channel></rss>";
2776 }
2777
2778 sub git_opml {
2779         my @list = git_get_projects_list();
2780
2781         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
2782         print "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n".
2783               "<opml version=\"1.0\">\n".
2784               "<head>".
2785               "  <title>$site_name Git OPML Export</title>\n".
2786               "</head>\n".
2787               "<body>\n".
2788               "<outline text=\"git RSS feeds\">\n";
2789
2790         foreach my $pr (@list) {
2791                 my %proj = %$pr;
2792                 my $head = git_get_head_hash($proj{'path'});
2793                 if (!defined $head) {
2794                         next;
2795                 }
2796                 $ENV{'GIT_DIR'} = "$projectroot/$proj{'path'}";
2797                 my %co = parse_commit($head);
2798                 if (!%co) {
2799                         next;
2800                 }
2801
2802                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
2803                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
2804                 my $html = "$my_url?p=$proj{'path'};a=summary";
2805                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
2806         }
2807         print "</outline>\n".
2808               "</body>\n".
2809               "</opml>\n";
2810 }