IkiWiki/CGI.pm

   1 #!/usr/bin/perl
   2
   3 use warnings;
   4 use strict;
   5 use IkiWiki;
   6 use IkiWiki::UserInfo;
   7 use open qw{:utf8 :std};
   8 use Encode;
   9
  10 package IkiWiki;
  11
  12 sub printheader ($) { #{{{
  13         my $session=shift;
  14
  15         if ($config{sslcookie}) {
  16                 print $session->header(-charset => 'utf-8',
  17                         -cookie => $session->cookie(-secure => 1));
  18         } else {
  19                 print $session->header(-charset => 'utf-8');
  20         }
  21
  22 } #}}}
  23
  24 sub redirect ($$) { #{{{
  25         my $q=shift;
  26         my $url=shift;
  27         if (! $config{w3mmode}) {
  28                 print $q->redirect($url);
  29         }
  30         else {
  31                 print "Content-type: text/plain\n";
  32                 print "W3m-control: GOTO $url\n\n";
  33         }
  34 } #}}}
  35
  36 sub check_canedit ($$$;$) { #{{{
  37         my $page=shift;
  38         my $q=shift;
  39         my $session=shift;
  40         my $nonfatal=shift;
  41
  42         my $canedit;
  43         run_hooks(canedit => sub {
  44                 return if defined $canedit;
  45                 my $ret=shift->($page, $q, $session);
  46                 if (defined $ret && $ret eq "") {
  47                         $canedit=1;
  48                 }
  49                 elsif (defined $ret) {
  50                         $canedit=0;
  51                         error($ret) unless $nonfatal;
  52                 }
  53         });
  54         return $canedit;
  55 } #}}}
  56
  57 sub decode_form_utf8 ($) { #{{{
  58         my $form = shift;
  59         foreach my $f ($form->field) {
  60                 next if Encode::is_utf8(scalar $form->field($f));
  61                 $form->field(name  => $f,
  62                              value => decode_utf8($form->field($f)),
  63                              force => 1,
  64                             );
  65         }
  66 } #}}}
  67
  68 sub cgi_recentchanges ($) { #{{{
  69         my $q=shift;
  70
  71         # Optimisation: building recentchanges means calculating lots of
  72         # links. Memoizing htmllink speeds it up a lot (can't be memoized
  73         # during page builds as the return values may change, but they
  74         # won't here.)
  75         eval q{use Memoize};
  76         error($@) if $@;
  77         memoize("htmllink");
  78
  79         eval q{use Time::Duration};
  80         error($@) if $@;
  81
  82         my $changelog=[rcs_recentchanges(100)];
  83         foreach my $change (@$changelog) {
  84                 $change->{when} = concise(ago($change->{when}));
  85
  86                 $change->{user} = userlink($change->{user});
  87
  88                 my $is_excess = exists $change->{pages}[10]; # limit pages to first 10
  89                 delete @{$change->{pages}}[10 .. @{$change->{pages}}] if $is_excess;
  90                 $change->{pages} = [
  91                         map {
  92                                 $_->{link} = htmllink("", "", $_->{page},
  93                                         noimageinline => 1,
  94                                         linktext => pagetitle($_->{page}));
  95                                 $_;
  96                         } @{$change->{pages}}
  97                 ];
  98                 push @{$change->{pages}}, { link => '...' } if $is_excess;
  99         }
 100
 101         my $template=template("recentchanges.tmpl");
 102         $template->param(
 103                 title => "RecentChanges",
 104                 indexlink => indexlink(),
 105                 wikiname => $config{wikiname},
 106                 changelog => $changelog,
 107                 baseurl => baseurl(),
 108         );
 109         run_hooks(pagetemplate => sub {
 110                 shift->(page => "", destpage => "", template => $template);
 111         });
 112         print $q->header(-charset => 'utf-8'), $template->output;
 113 } #}}}
 114
 115 # Check if the user is signed in. If not, redirect to the signin form and
 116 # save their place to return to later.
 117 sub needsignin ($$) { #{{{
 118         my $q=shift;
 119         my $session=shift;
 120
 121         if (! defined $session->param("name") ||
 122             ! userinfo_get($session->param("name"), "regdate")) {
 123                 if (! defined $session->param("postsignin")) {
 124                         $session->param(postsignin => $ENV{QUERY_STRING});
 125                 }
 126                 cgi_signin($q, $session);
 127                 cgi_savesession($session);
 128                 exit;
 129         }
 130 } #}}}
 131
 132 sub cgi_signin ($$) { #{{{
 133         my $q=shift;
 134         my $session=shift;
 135
 136         eval q{use CGI::FormBuilder};
 137         error($@) if $@;
 138         my $form = CGI::FormBuilder->new(
 139                 title => "signin",
 140                 header => 1,
 141                 charset => "utf-8",
 142                 method => 'POST',
 143                 required => 'NONE',
 144                 javascript => 0,
 145                 params => $q,
 146                 action => $config{cgiurl},
 147                 header => 0,
 148                 template => scalar template_params("signin.tmpl"),
 149                 stylesheet => baseurl()."style.css",
 150         );
 151         my $buttons=["Login"];
 152
 153         if ($q->param("do") ne "signin" && !$form->submitted) {
 154                 $form->text(gettext("You need to log in first."));
 155         }
 156         $form->field(name => "do", type => "hidden", value => "signin",
 157                 force => 1);
 158
 159         run_hooks(formbuilder_setup => sub {
 160                 shift->(form => $form, cgi => $q, session => $session);
 161         });
 162
 163         decode_form_utf8($form);
 164
 165         if (exists $hooks{formbuilder}) {
 166                 run_hooks(formbuilder => sub {
 167                         shift->(form => $form, cgi => $q, session => $session,
 168                                 buttons => $buttons);
 169                 });
 170         }
 171         else {
 172                 if ($form->submitted) {
 173                         $form->validate;
 174                 }
 175                 printheader($session);
 176                 print misctemplate($form->title, $form->render(submit => $buttons));
 177         }
 178 } #}}}
 179
 180 sub cgi_postsignin ($$) { #{{{
 181         my $q=shift;
 182         my $session=shift;
 183
 184         # Continue with whatever was being done before the signin process.
 185         my $postsignin=CGI->new($session->param("postsignin"));
 186         $session->clear("postsignin");
 187         cgi($postsignin, $session);
 188         cgi_savesession($session);
 189         exit;
 190 } #}}}
 191
 192 sub cgi_prefs ($$) { #{{{
 193         my $q=shift;
 194         my $session=shift;
 195
 196         needsignin($q, $session);
 197
 198         eval q{use CGI::FormBuilder};
 199         error($@) if $@;
 200         my $form = CGI::FormBuilder->new(
 201                 title => "preferences",
 202                 header => 0,
 203                 charset => "utf-8",
 204                 method => 'POST',
 205                 validate => {
 206                         email => 'EMAIL',
 207                 },
 208                 required => 'NONE',
 209                 javascript => 0,
 210                 params => $q,
 211                 action => $config{cgiurl},
 212                 template => scalar template_params("prefs.tmpl"),
 213                 stylesheet => baseurl()."style.css",
 214         );
 215         my $buttons=["Save Preferences", "Logout", "Cancel"];
 216
 217         run_hooks(formbuilder_setup => sub {
 218                 shift->(form => $form, cgi => $q, session => $session);
 219         });
 220
 221         $form->field(name => "do", type => "hidden");
 222         $form->field(name => "email", size => 50);
 223         $form->field(name => "subscriptions", size => 50,
 224                 comment => "(".htmllink("", "", "PageSpec", noimageinline => 1).")");
 225         $form->field(name => "banned_users", size => 50);
 226
 227         my $user_name=$session->param("name");
 228         if (! is_admin($user_name)) {
 229                 $form->field(name => "banned_users", type => "hidden");
 230         }
 231
 232         if (! $form->submitted) {
 233                 $form->field(name => "email", force => 1,
 234                         value => userinfo_get($user_name, "email"));
 235                 $form->field(name => "subscriptions", force => 1,
 236                         value => userinfo_get($user_name, "subscriptions"));
 237                 if (is_admin($user_name)) {
 238                         $form->field(name => "banned_users", force => 1,
 239                                 value => join(" ", get_banned_users()));
 240                 }
 241         }
 242
 243         decode_form_utf8($form);
 244
 245         if ($form->submitted eq 'Logout') {
 246                 $session->delete();
 247                 redirect($q, $config{url});
 248                 return;
 249         }
 250         elsif ($form->submitted eq 'Cancel') {
 251                 redirect($q, $config{url});
 252                 return;
 253         }
 254         elsif ($form->submitted eq 'Save Preferences' && $form->validate) {
 255                 foreach my $field (qw(email subscriptions)) {
 256                         if (defined $form->field($field) && length $form->field($field)) {
 257                                 userinfo_set($user_name, $field, $form->field($field)) ||
 258                                         error("failed to set $field");
 259                         }
 260                 }
 261                 if (is_admin($user_name)) {
 262                         set_banned_users(grep { ! is_admin($_) }
 263                                         split(' ',
 264                                                 $form->field("banned_users"))) ||
 265                                 error("failed saving changes");
 266                 }
 267                 $form->text(gettext("Preferences saved."));
 268         }
 269
 270         if (exists $hooks{formbuilder}) {
 271                 run_hooks(formbuilder => sub {
 272                         shift->(form => $form, cgi => $q, session => $session,
 273                                 buttons => $buttons);
 274                 });
 275         }
 276         else {
 277                 printheader($session);
 278                 print misctemplate($form->title, $form->render(submit => $buttons));
 279         }
 280 } #}}}
 281
 282 sub cgi_editpage ($$) { #{{{
 283         my $q=shift;
 284         my $session=shift;
 285
 286         my @fields=qw(do rcsinfo subpage from page type editcontent comments);
 287         my @buttons=("Save Page", "Preview", "Cancel");
 288
 289         eval q{use CGI::FormBuilder};
 290         error($@) if $@;
 291         my $form = CGI::FormBuilder->new(
 292                 fields => \@fields,
 293                 header => 1,
 294                 charset => "utf-8",
 295                 method => 'POST',
 296                 validate => {
 297                         editcontent => '/.+/',
 298                 },
 299                 required => [qw{editcontent}],
 300                 javascript => 0,
 301                 params => $q,
 302                 action => $config{cgiurl},
 303                 table => 0,
 304                 template => scalar template_params("editpage.tmpl"),
 305         );
 306
 307         run_hooks(formbuilder_setup => sub {
 308                 shift->(form => $form, cgi => $q, session => $session);
 309         });
 310
 311         decode_form_utf8($form);
 312
 313         # This untaint is safe because titlepage removes any problematic
 314         # characters.
 315         my ($page)=$form->field('page');
 316         $page=titlepage(possibly_foolish_untaint($page));
 317         if (! defined $page || ! length $page || file_pruned($page, $config{srcdir}) || $page=~/^\//) {
 318                 error("bad page name");
 319         }
 320
 321         my $from;
 322         if (defined $form->field('from')) {
 323                 ($from)=$form->field('from')=~/$config{wiki_file_regexp}/;
 324         }
 325
 326         my $file;
 327         my $type;
 328         if (exists $pagesources{$page}) {
 329                 $file=$pagesources{$page};
 330                 $type=pagetype($file);
 331                 if (! defined $type) {
 332                         error(sprintf(gettext("%s is not an editable page"), $page));
 333                 }
 334         }
 335         else {
 336                 $type=$form->param('type');
 337                 if (defined $type && length $type && $hooks{htmlize}{$type}) {
 338                         $type=possibly_foolish_untaint($type);
 339                 }
 340                 elsif (defined $from) {
 341                         # favor the type of linking page
 342                         $type=pagetype($pagesources{$from});
 343                 }
 344                 $type=$config{default_pageext} unless defined $type;
 345                 $file=$page.".".$type;
 346         }
 347
 348         my $newfile=0;
 349         if (! -e "$config{srcdir}/$file") {
 350                 $newfile=1;
 351         }
 352
 353         $form->field(name => "do", type => 'hidden');
 354         $form->field(name => "from", type => 'hidden');
 355         $form->field(name => "rcsinfo", type => 'hidden');
 356         $form->field(name => "subpage", type => 'hidden');
 357         $form->field(name => "page", value => $page, force => 1);
 358         $form->field(name => "type", value => $type, force => 1);
 359         $form->field(name => "comments", type => "text", size => 80);
 360         $form->field(name => "editcontent", type => "textarea", rows => 20,
 361                 cols => 80);
 362         $form->tmpl_param("can_commit", $config{rcs});
 363         $form->tmpl_param("indexlink", indexlink());
 364         $form->tmpl_param("helponformattinglink",
 365                 htmllink("", "", "HelpOnFormatting", noimageinline => 1));
 366         $form->tmpl_param("baseurl", baseurl());
 367         if (! $form->submitted) {
 368                 $form->field(name => "rcsinfo", value => rcs_prepedit($file),
 369                         force => 1);
 370         }
 371
 372         if ($form->submitted eq "Cancel") {
 373                 if ($newfile && defined $from) {
 374                         redirect($q, "$config{url}/".htmlpage($from));
 375                 }
 376                 elsif ($newfile) {
 377                         redirect($q, $config{url});
 378                 }
 379                 else {
 380                         redirect($q, "$config{url}/".htmlpage($page));
 381                 }
 382                 return;
 383         }
 384         elsif ($form->submitted eq "Preview") {
 385                 my $content=$form->field('editcontent');
 386                 my $comments=$form->field('comments');
 387                 $form->field(name => "editcontent",
 388                                 value => $content, force => 1);
 389                 $form->field(name => "comments",
 390                                 value => $comments, force => 1);
 391                 $config{rss}=$config{atom}=0; # avoid preview writing a feed!
 392                 $form->tmpl_param("page_preview",
 393                         htmlize($page, $type,
 394                         linkify($page, "",
 395                         preprocess($page, $page,
 396                         filter($page, $content)))));
 397         }
 398         else {
 399                 $form->tmpl_param("page_preview", "");
 400         }
 401         $form->tmpl_param("page_conflict", "");
 402
 403         if (! $form->submitted || $form->submitted eq "Preview" ||
 404             ! $form->validate) {
 405                 if ($form->field("do") eq "create") {
 406                         my @page_locs;
 407                         my $best_loc;
 408                         if (! defined $from || ! length $from ||
 409                             $from ne $form->field('from') ||
 410                             file_pruned($from, $config{srcdir}) ||
 411                             $from=~/^\// ||
 412                             $form->submitted eq "Preview") {
 413                                 @page_locs=$best_loc=$page;
 414                         }
 415                         else {
 416                                 my $dir=$from."/";
 417                                 $dir=~s![^/]+/+$!!;
 418
 419                                 if ((defined $form->field('subpage') && length $form->field('subpage')) ||
 420                                     $page eq gettext('discussion')) {
 421                                         $best_loc="$from/$page";
 422                                 }
 423                                 else {
 424                                         $best_loc=$dir.$page;
 425                                 }
 426
 427                                 push @page_locs, $dir.$page;
 428                                 push @page_locs, "$from/$page";
 429                                 while (length $dir) {
 430                                         $dir=~s![^/]+/+$!!;
 431                                         push @page_locs, $dir.$page;
 432                                 }
 433                         }
 434                         push @page_locs, "$config{userdir}/$page"
 435                                 if length $config{userdir};
 436
 437                         @page_locs = grep {
 438                                 ! exists $pagecase{lc $_}
 439                         } @page_locs;
 440                         if (! @page_locs) {
 441                                 # hmm, someone else made the page in the
 442                                 # meantime?
 443                                 redirect($q, "$config{url}/".htmlpage($page));
 444                                 return;
 445                         }
 446
 447                         my @editable_locs = grep {
 448                                 check_canedit($_, $q, $session, 1)
 449                         } @page_locs;
 450                         if (! @editable_locs) {
 451                                 # let it throw an error this time
 452                                 map { check_canedit($_, $q, $session) } @page_locs;
 453                         }
 454
 455                         my @page_types;
 456                         if (exists $hooks{htmlize}) {
 457                                 @page_types=keys %{$hooks{htmlize}};
 458                         }
 459
 460                         $form->tmpl_param("page_select", 1);
 461                         $form->field(name => "page", type => 'select',
 462                                 options => { map { $_ => pagetitle($_, 1) } @editable_locs },
 463                                 value => $best_loc);
 464                         $form->field(name => "type", type => 'select',
 465                                 options => \@page_types);
 466                         $form->title(sprintf(gettext("creating %s"), pagetitle($page)));
 467                 }
 468                 elsif ($form->field("do") eq "edit") {
 469                         check_canedit($page, $q, $session);
 470                         if (! defined $form->field('editcontent') ||
 471                             ! length $form->field('editcontent')) {
 472                                 my $content="";
 473                                 if (exists $pagesources{$page}) {
 474                                         $content=readfile(srcfile($pagesources{$page}));
 475                                         $content=~s/\n/\r\n/g;
 476                                 }
 477                                 $form->field(name => "editcontent", value => $content,
 478                                         force => 1);
 479                         }
 480                         $form->tmpl_param("page_select", 0);
 481                         $form->field(name => "page", type => 'hidden');
 482                         $form->field(name => "type", type => 'hidden');
 483                         $form->title(sprintf(gettext("editing %s"), pagetitle($page)));
 484                 }
 485
 486                 print $form->render(submit => \@buttons);
 487         }
 488         else {
 489                 # save page
 490                 check_canedit($page, $q, $session);
 491
 492                 my $content=$form->field('editcontent');
 493
 494                 $content=~s/\r\n/\n/g;
 495                 $content=~s/\r/\n/g;
 496
 497                 $config{cgi}=0; # avoid cgi error message
 498                 eval { writefile($file, $config{srcdir}, $content) };
 499                 $config{cgi}=1;
 500                 if ($@) {
 501                         $form->field(name => "rcsinfo", value => rcs_prepedit($file),
 502                                 force => 1);
 503                         $form->tmpl_param("failed_save", 1);
 504                         $form->tmpl_param("error_message", $@);
 505                         $form->field("editcontent", value => $content, force => 1);
 506                         $form->field(name => "comments", value => $form->field('comments'), force => 1);
 507                         $form->field("do", "edit)");
 508                         $form->tmpl_param("page_select", 0);
 509                         $form->field(name => "page", type => 'hidden');
 510                         $form->field(name => "type", type => 'hidden');
 511                         $form->title(sprintf(gettext("editing %s"), $page));
 512                         print $form->render(submit => \@buttons);
 513                         return;
 514                 }
 515
 516                 my $conflict;
 517                 if ($config{rcs}) {
 518                         my $message="";
 519                         if (defined $form->field('comments') &&
 520                             length $form->field('comments')) {
 521                                 $message=$form->field('comments');
 522                         }
 523
 524                         if ($newfile) {
 525                                 rcs_add($file);
 526                         }
 527
 528                         # Prevent deadlock with post-commit hook by
 529                         # signaling to it that it should not try to
 530                         # do anything (except send commit mails).
 531                         disable_commit_hook();
 532                         $conflict=rcs_commit($file, $message,
 533                                 $form->field("rcsinfo"),
 534                                 $session->param("name"), $ENV{REMOTE_ADDR});
 535                         enable_commit_hook();
 536                         rcs_update();
 537                 }
 538
 539                 # Refresh even if there was a conflict, since other changes
 540                 # may have been committed while the post-commit hook was
 541                 # disabled.
 542                 require IkiWiki::Render;
 543                 refresh();
 544                 saveindex();
 545
 546                 if (defined $conflict) {
 547                         $form->field(name => "rcsinfo", value => rcs_prepedit($file),
 548                                 force => 1);
 549                         $form->tmpl_param("page_conflict", 1);
 550                         $form->field("editcontent", value => $conflict, force => 1);
 551                         $form->field(name => "comments", value => $form->field('comments'), force => 1);
 552                         $form->field("do", "edit)");
 553                         $form->tmpl_param("page_select", 0);
 554                         $form->field(name => "page", type => 'hidden');
 555                         $form->field(name => "type", type => 'hidden');
 556                         $form->title(sprintf(gettext("editing %s"), $page));
 557                         print $form->render(submit => \@buttons);
 558                         return;
 559                 }
 560                 else {
 561                         # The trailing question mark tries to avoid broken
 562                         # caches and get the most recent version of the page.
 563                         redirect($q, "$config{url}/".htmlpage($page)."?updated");
 564                 }
 565         }
 566 } #}}}
 567
 568 sub cgi_getsession ($) { #{{{
 569         my $q=shift;
 570
 571         eval q{use CGI::Session};
 572         CGI::Session->name("ikiwiki_session_".encode_utf8($config{wikiname}));
 573
 574         my $oldmask=umask(077);
 575         my $session = CGI::Session->new("driver:DB_File", $q,
 576                 { FileName => "$config{wikistatedir}/sessions.db" });
 577         umask($oldmask);
 578
 579         return $session;
 580 } #}}}
 581
 582 sub cgi_savesession ($) { #{{{
 583         my $session=shift;
 584
 585         # Force session flush with safe umask.
 586         my $oldmask=umask(077);
 587         $session->flush;
 588         umask($oldmask);
 589 } #}}}
 590
 591 sub cgi (;$$) { #{{{
 592         my $q=shift;
 593         my $session=shift;
 594
 595         if (! $q) {
 596                 eval q{use CGI};
 597                 error($@) if $@;
 598
 599                 $q=CGI->new;
 600
 601                 run_hooks(cgi => sub { shift->($q) });
 602         }
 603
 604         my $do=$q->param('do');
 605         if (! defined $do || ! length $do) {
 606                 my $error = $q->cgi_error;
 607                 if ($error) {
 608                         error("Request not processed: $error");
 609                 }
 610                 else {
 611                         error("\"do\" parameter missing");
 612                 }
 613         }
 614
 615         # Things that do not need a session.
 616         if ($do eq 'recentchanges') {
 617                 cgi_recentchanges($q);
 618                 return;
 619         }
 620         elsif ($do eq 'hyperestraier') {
 621                 cgi_hyperestraier();
 622         }
 623
 624         # Need to lock the wiki before getting a session.
 625         lockwiki();
 626
 627         if (! $session) {
 628                 $session=cgi_getsession($q);
 629         }
 630
 631         # Auth hooks can sign a user in.
 632         if ($do ne 'signin' && ! defined $session->param("name")) {
 633                 run_hooks(auth => sub {
 634                         shift->($q, $session)
 635                 });
 636                 if (defined $session->param("name")) {
 637                         # Make sure whatever user was authed is in the
 638                         # userinfo db.
 639                         if (! userinfo_get($session->param("name"), "regdate")) {
 640                                 userinfo_setall($session->param("name"), {
 641                                         email => "",
 642                                         password => "",
 643                                         regdate => time,
 644                                 }) || error("failed adding user");
 645                         }
 646                 }
 647         }
 648
 649         if (defined $session->param("name") &&
 650             userinfo_get($session->param("name"), "banned")) {
 651                 print $q->header(-status => "403 Forbidden");
 652                 $session->delete();
 653                 print gettext("You are banned.");
 654                 cgi_savesession($session);
 655         }
 656         elsif ($do eq 'signin') {
 657                 cgi_signin($q, $session);
 658                 cgi_savesession($session);
 659         }
 660         elsif (defined $session->param("postsignin")) {
 661                 cgi_postsignin($q, $session);
 662         }
 663         elsif ($do eq 'prefs') {
 664                 cgi_prefs($q, $session);
 665         }
 666         elsif ($do eq 'create' || $do eq 'edit') {
 667                 cgi_editpage($q, $session);
 668         }
 669         elsif ($do eq 'blog') {
 670                 my $page=titlepage(decode_utf8($q->param('title')));
 671                 $page=~s/(\/)/"__".ord($1)."__"/eg; # escape slashes too
 672                 # if the page already exists, munge it to be unique
 673                 my $from=$q->param('from');
 674                 my $add="";
 675                 while (exists $pagecase{lc "$from/$page$add"}) {
 676                         $add=1 unless length $add;
 677                         $add++;
 678                 }
 679                 $q->param('page', $page.$add);
 680                 # now run same as create
 681                 $q->param('do', 'create');
 682                 cgi_editpage($q, $session);
 683         }
 684         elsif ($do eq 'postsignin') {
 685                 error(gettext("login failed, perhaps you need to turn on cookies?"));
 686         }
 687         else {
 688                 error("unknown do parameter");
 689         }
 690 } #}}}
 691
 692 sub userlink ($) { #{{{
 693         my $user=shift;
 694
 695         eval q{use CGI 'escapeHTML'};
 696         error($@) if $@;
 697         if ($user =~ m!^https?://! &&
 698             eval q{use Net::OpenID::VerifiedIdentity; 1} && !$@) {
 699                 # Munge user-urls, as used by eg, OpenID.
 700                 my $oid=Net::OpenID::VerifiedIdentity->new(identity => $user);
 701                 my $display=$oid->display;
 702                 # Convert "user.somehost.com" to "user [somehost.com]".
 703                 if ($display !~ /\[/) {
 704                         $display=~s/^(.*?)\.([^.]+\.[a-z]+)$/$1 [$2]/;
 705                 }
 706                 # Convert "http://somehost.com/user" to "user [somehost.com]".
 707                 if ($display !~ /\[/) {
 708                         $display=~s/^https?:\/\/(.+)\/([^\/]+)$/$2 [$1]/;
 709                 }
 710                 $display=~s!^https?://!!; # make sure this is removed
 711                 return "<a href=\"$user\">".escapeHTML($display)."</a>";
 712         }
 713         else {
 714                 return htmllink("", "", escapeHTML(
 715                         length $config{userdir} ? $config{userdir}."/".$user : $user
 716                 ), noimageinline => 1);
 717         }
 718 } #}}}
 719
 720 1