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 redirect ($$) { #{{{
  13         my $q=shift;
  14         my $url=shift;
  15         if (! $config{w3mmode}) {
  16                 print $q->redirect($url);
  17         }
  18         else {
  19                 print "Content-type: text/plain\n";
  20                 print "W3m-control: GOTO $url\n\n";
  21         }
  22 } #}}}
  23
  24 sub page_locked ($$;$) { #{{{
  25         my $page=shift;
  26         my $session=shift;
  27         my $nonfatal=shift;
  28
  29         my $user=$session->param("name");
  30         return if defined $user && is_admin($user);
  31
  32         foreach my $admin (@{$config{adminuser}}) {
  33                 my $locked_pages=userinfo_get($admin, "locked_pages");
  34                 if (globlist_match($page, userinfo_get($admin, "locked_pages"))) {
  35                         return 1 if $nonfatal;
  36                         error(htmllink("", "", $page, 1)." is locked by ".
  37                               htmllink("", "", $admin, 1)." and cannot be edited.");
  38                 }
  39         }
  40
  41         return 0;
  42 } #}}}
  43
  44 sub decode_form_utf8 ($) { #{{{
  45         my $form = shift;
  46         foreach my $f ($form->field) {
  47                 next if Encode::is_utf8(scalar $form->field($f));
  48                 $form->field(name  => $f,
  49                              value => decode_utf8($form->field($f)),
  50                              force => 1,
  51                             );
  52         }
  53 } #}}}
  54
  55 sub cgi_recentchanges ($) { #{{{
  56         my $q=shift;
  57
  58         unlockwiki();
  59
  60         # Optimisation: building recentchanges means calculating lots of
  61         # links. Memoizing htmllink speeds it up a lot (can't be memoized
  62         # during page builds as the return values may change, but they
  63         # won't here.)
  64         eval q{use Memoize};
  65         memoize("htmllink");
  66
  67         my $template=template("recentchanges.tmpl");
  68         $template->param(
  69                 title => "RecentChanges",
  70                 indexlink => indexlink(),
  71                 wikiname => $config{wikiname},
  72                 changelog => [rcs_recentchanges(100)],
  73                 styleurl => styleurl(),
  74                 baseurl => "$config{url}/",
  75         );
  76         print $q->header(-charset=>'utf-8'), $template->output;
  77 } #}}}
  78
  79 sub cgi_signin ($$) { #{{{
  80         my $q=shift;
  81         my $session=shift;
  82
  83         eval q{use CGI::FormBuilder};
  84         my $form = CGI::FormBuilder->new(
  85                 title => "signin",
  86                 fields => [qw(do title page subpage from name password confirm_password email)],
  87                 header => 1,
  88                 charset => "utf-8",
  89                 method => 'POST',
  90                 validate => {
  91                         confirm_password => {
  92                                 perl => q{eq $form->field("password")},
  93                         },
  94                         email => 'EMAIL',
  95                 },
  96                 required => 'NONE',
  97                 javascript => 0,
  98                 params => $q,
  99                 action => $config{cgiurl},
 100                 header => 0,
 101                 template => (-e "$config{templatedir}/signin.tmpl" ?
 102                              {template_params("signin.tmpl")} : ""),
 103                 stylesheet => styleurl(),
 104         );
 105
 106         decode_form_utf8($form);
 107
 108         $form->field(name => "name", required => 0);
 109         $form->field(name => "do", type => "hidden");
 110         $form->field(name => "page", type => "hidden");
 111         $form->field(name => "title", type => "hidden");
 112         $form->field(name => "from", type => "hidden");
 113         $form->field(name => "subpage", type => "hidden");
 114         $form->field(name => "password", type => "password", required => 0);
 115         $form->field(name => "confirm_password", type => "password", required => 0);
 116         $form->field(name => "email", required => 0);
 117         if ($q->param("do") ne "signin") {
 118                 $form->text("You need to log in first.");
 119         }
 120
 121         if ($form->submitted) {
 122                 # Set required fields based on how form was submitted.
 123                 my %required=(
 124                         "Login" => [qw(name password)],
 125                         "Register" => [qw(name password confirm_password email)],
 126                         "Mail Password" => [qw(name)],
 127                 );
 128                 foreach my $opt (@{$required{$form->submitted}}) {
 129                         $form->field(name => $opt, required => 1);
 130                 }
 131
 132                 # Validate password differently depending on how
 133                 # form was submitted.
 134                 if ($form->submitted eq 'Login') {
 135                         $form->field(
 136                                 name => "password",
 137                                 validate => sub {
 138                                         length $form->field("name") &&
 139                                         shift eq userinfo_get($form->field("name"), 'password');
 140                                 },
 141                         );
 142                         $form->field(name => "name", validate => '/^\w+$/');
 143                 }
 144                 else {
 145                         $form->field(name => "password", validate => 'VALUE');
 146                 }
 147                 # And make sure the entered name exists when logging
 148                 # in or sending email, and does not when registering.
 149                 if ($form->submitted eq 'Register') {
 150                         $form->field(
 151                                 name => "name",
 152                                 validate => sub {
 153                                         my $name=shift;
 154                                         length $name &&
 155                                         $name=~/$config{wiki_file_regexp}/ &&
 156                                         ! userinfo_get($name, "regdate");
 157                                 },
 158                         );
 159                 }
 160                 else {
 161                         $form->field(
 162                                 name => "name",
 163                                 validate => sub {
 164                                         my $name=shift;
 165                                         length $name &&
 166                                         userinfo_get($name, "regdate");
 167                                 },
 168                         );
 169                 }
 170         }
 171         else {
 172                 # First time settings.
 173                 $form->field(name => "name", comment => "use FirstnameLastName");
 174                 $form->field(name => "confirm_password", comment => "(only needed");
 175                 $form->field(name => "email",            comment => "for registration)");
 176                 if ($session->param("name")) {
 177                         $form->field(name => "name", value => $session->param("name"));
 178                 }
 179         }
 180
 181         if ($form->submitted && $form->validate) {
 182                 if ($form->submitted eq 'Login') {
 183                         $session->param("name", $form->field("name"));
 184                         if (defined $form->field("do") &&
 185                             $form->field("do") ne 'signin') {
 186                                 redirect($q, cgiurl(
 187                                         do => $form->field("do"),
 188                                         page => $form->field("page"),
 189                                         title => $form->field("title"),
 190                                         subpage => $form->field("subpage"),
 191                                         from => $form->field("from"),
 192                                 ));
 193                         }
 194                         else {
 195                                 redirect($q, $config{url});
 196                         }
 197                 }
 198                 elsif ($form->submitted eq 'Register') {
 199                         my $user_name=$form->field('name');
 200                         if (userinfo_setall($user_name, {
 201                                            'email' => $form->field('email'),
 202                                            'password' => $form->field('password'),
 203                                            'regdate' => time
 204                                          })) {
 205                                 $form->field(name => "confirm_password", type => "hidden");
 206                                 $form->field(name => "email", type => "hidden");
 207                                 $form->text("Registration successful. Now you can Login.");
 208                                 print $session->header(-charset=>'utf-8');
 209                                 print misctemplate($form->title, $form->render(submit => ["Login"]));
 210                         }
 211                         else {
 212                                 error("Error saving registration.");
 213                         }
 214                 }
 215                 elsif ($form->submitted eq 'Mail Password') {
 216                         my $user_name=$form->field("name");
 217                         my $template=template("passwordmail.tmpl");
 218                         $template->param(
 219                                 user_name => $user_name,
 220                                 user_password => userinfo_get($user_name, "password"),
 221                                 wikiurl => $config{url},
 222                                 wikiname => $config{wikiname},
 223                                 REMOTE_ADDR => $ENV{REMOTE_ADDR},
 224                         );
 225
 226                         eval q{use Mail::Sendmail};
 227                         sendmail(
 228                                 To => userinfo_get($user_name, "email"),
 229                                 From => "$config{wikiname} admin <$config{adminemail}>",
 230                                 Subject => "$config{wikiname} information",
 231                                 Message => $template->output,
 232                         ) or error("Failed to send mail");
 233
 234                         $form->text("Your password has been emailed to you.");
 235                         $form->field(name => "name", required => 0);
 236                         print $session->header(-charset=>'utf-8');
 237                         print misctemplate($form->title, $form->render(submit => ["Login", "Register", "Mail Password"]));
 238                 }
 239         }
 240         else {
 241                 print $session->header(-charset=>'utf-8');
 242                 print misctemplate($form->title, $form->render(submit => ["Login", "Register", "Mail Password"]));
 243         }
 244 } #}}}
 245
 246 sub cgi_prefs ($$) { #{{{
 247         my $q=shift;
 248         my $session=shift;
 249
 250         eval q{use CGI::FormBuilder};
 251         my $form = CGI::FormBuilder->new(
 252                 title => "preferences",
 253                 fields => [qw(do name password confirm_password email
 254                               subscriptions locked_pages)],
 255                 header => 0,
 256                 charset => "utf-8",
 257                 method => 'POST',
 258                 validate => {
 259                         confirm_password => {
 260                                 perl => q{eq $form->field("password")},
 261                         },
 262                         email => 'EMAIL',
 263                 },
 264                 required => 'NONE',
 265                 javascript => 0,
 266                 params => $q,
 267                 action => $config{cgiurl},
 268                 template => (-e "$config{templatedir}/prefs.tmpl" ?
 269                              {template_params("prefs.tmpl")} : ""),
 270                 stylesheet => styleurl(),
 271         );
 272         my @buttons=("Save Preferences", "Logout", "Cancel");
 273
 274         my $user_name=$session->param("name");
 275         $form->field(name => "do", type => "hidden");
 276         $form->field(name => "name", disabled => 1,
 277                 value => $user_name, force => 1);
 278         $form->field(name => "password", type => "password");
 279         $form->field(name => "confirm_password", type => "password");
 280         $form->field(name => "subscriptions", size => 50,
 281                 comment => "(".htmllink("", "", "GlobList", 1).")");
 282         $form->field(name => "locked_pages", size => 50,
 283                 comment => "(".htmllink("", "", "GlobList", 1).")");
 284
 285         if (! is_admin($user_name)) {
 286                 $form->field(name => "locked_pages", type => "hidden");
 287         }
 288
 289         if (! $form->submitted) {
 290                 $form->field(name => "email", force => 1,
 291                         value => userinfo_get($user_name, "email"));
 292                 $form->field(name => "subscriptions", force => 1,
 293                         value => userinfo_get($user_name, "subscriptions"));
 294                 $form->field(name => "locked_pages", force => 1,
 295                         value => userinfo_get($user_name, "locked_pages"));
 296         }
 297
 298         decode_form_utf8($form);
 299
 300         if ($form->submitted eq 'Logout') {
 301                 $session->delete();
 302                 redirect($q, $config{url});
 303                 return;
 304         }
 305         elsif ($form->submitted eq 'Cancel') {
 306                 redirect($q, $config{url});
 307                 return;
 308         }
 309         elsif ($form->submitted eq "Save Preferences" && $form->validate) {
 310                 foreach my $field (qw(password email subscriptions locked_pages)) {
 311                         if (length $form->field($field)) {
 312                                 userinfo_set($user_name, $field, $form->field($field)) || error("failed to set $field");
 313                         }
 314                 }
 315                 $form->text("Preferences saved.");
 316         }
 317
 318         print $session->header(-charset=>'utf-8');
 319         print misctemplate($form->title, $form->render(submit => \@buttons));
 320 } #}}}
 321
 322 sub cgi_editpage ($$) { #{{{
 323         my $q=shift;
 324         my $session=shift;
 325
 326         eval q{use CGI::FormBuilder};
 327         my $form = CGI::FormBuilder->new(
 328                 fields => [qw(do rcsinfo subpage from page editcontent comments)],
 329                 header => 1,
 330                 charset => "utf-8",
 331                 method => 'POST',
 332                 validate => {
 333                         editcontent => '/.+/',
 334                 },
 335                 required => [qw{editcontent}],
 336                 javascript => 0,
 337                 params => $q,
 338                 action => $config{cgiurl},
 339                 table => 0,
 340                 template => {template_params("editpage.tmpl")},
 341         );
 342         my @buttons=("Save Page", "Preview", "Cancel");
 343
 344         decode_form_utf8($form);
 345
 346         # This untaint is safe because titlepage removes any problematic
 347         # characters.
 348         my ($page)=$form->field('page');
 349         $page=titlepage(possibly_foolish_untaint(lc($page)));
 350         if (! defined $page || ! length $page ||
 351             $page=~/$config{wiki_file_prune_regexp}/ || $page=~/^\//) {
 352                 error("bad page name");
 353         }
 354         $page=lc($page);
 355
 356         my $file;
 357         if (exists $pagesources{lc($page)}) {
 358                 $file=$pagesources{lc($page)};
 359         }
 360         else {
 361                 $file=$page.".".$config{default_pageext};
 362         }
 363         my $newfile=0;
 364         if (! -e "$config{srcdir}/$file") {
 365                 $newfile=1;
 366         }
 367
 368         $form->field(name => "do", type => 'hidden');
 369         $form->field(name => "from", type => 'hidden');
 370         $form->field(name => "rcsinfo", type => 'hidden');
 371         $form->field(name => "subpage", type => 'hidden');
 372         $form->field(name => "page", value => "$page", force => 1);
 373         $form->field(name => "comments", type => "text", size => 80);
 374         $form->field(name => "editcontent", type => "textarea", rows => 20,
 375                 cols => 80);
 376         $form->tmpl_param("can_commit", $config{rcs});
 377         $form->tmpl_param("indexlink", indexlink());
 378         $form->tmpl_param("helponformattinglink",
 379                 htmllink("", "", "HelpOnFormatting", 1));
 380         $form->tmpl_param("styleurl", styleurl());
 381         $form->tmpl_param("baseurl", "$config{url}/");
 382         if (! $form->submitted) {
 383                 $form->field(name => "rcsinfo", value => rcs_prepedit($file),
 384                         force => 1);
 385         }
 386
 387         if ($form->submitted eq "Cancel") {
 388                 redirect($q, "$config{url}/".htmlpage($page));
 389                 return;
 390         }
 391         elsif ($form->submitted eq "Preview") {
 392                 require IkiWiki::Render;
 393                 my $content=$form->field('editcontent');
 394                 my $comments=$form->field('comments');
 395                 $form->field(name => "editcontent",
 396                                 value => $content, force => 1);
 397                 $form->field(name => "comments",
 398                                 value => $comments, force => 1);
 399                 $form->tmpl_param("page_preview",
 400                         htmlize(pagetype($file),
 401                                 linkify($page, $page, $content)));
 402         }
 403         else {
 404                 $form->tmpl_param("page_preview", "");
 405         }
 406         $form->tmpl_param("page_conflict", "");
 407
 408         if (! $form->submitted || $form->submitted eq "Preview" ||
 409             ! $form->validate) {
 410                 if ($form->field("do") eq "create") {
 411                         my @page_locs;
 412                         my $best_loc;
 413                         my ($from)=$form->field('from')=~/$config{wiki_file_regexp}/;
 414                         if (! defined $from || ! length $from ||
 415                             $from ne $form->field('from') ||
 416                             $from=~/$config{wiki_file_prune_regexp}/ ||
 417                             $from=~/^\// ||
 418                             $form->submitted eq "Preview") {
 419                                 @page_locs=$best_loc=$page;
 420                         }
 421                         else {
 422                                 my $dir=$from."/";
 423                                 $dir=~s![^/]+/+$!!;
 424
 425                                 if ((defined $form->field('subpage') && length $form->field('subpage')) ||
 426                                     $page eq 'discussion') {
 427                                         $best_loc="$from/$page";
 428                                 }
 429                                 else {
 430                                         $best_loc=$dir.$page;
 431                                 }
 432
 433                                 push @page_locs, $dir.$page;
 434                                 push @page_locs, "$from/$page";
 435                                 while (length $dir) {
 436                                         $dir=~s![^/]+/+$!!;
 437                                         push @page_locs, $dir.$page;
 438                                 }
 439                         }
 440
 441                         @page_locs = grep {
 442                                 ! exists $pagesources{lc($_)} &&
 443                                 ! page_locked($_, $session, 1)
 444                         } @page_locs;
 445
 446                         if (! @page_locs) {
 447                                 # hmm, someone else made the page in the
 448                                 # meantime?
 449                                 redirect($q, "$config{url}/".htmlpage($page));
 450                                 return;
 451                         }
 452
 453                         $form->tmpl_param("page_select", 1);
 454                         $form->field(name => "page", type => 'select',
 455                                 options => \@page_locs, value => $best_loc);
 456                         $form->title("creating ".pagetitle($page));
 457                 }
 458                 elsif ($form->field("do") eq "edit") {
 459                         page_locked($page, $session);
 460                         if (! defined $form->field('editcontent') ||
 461                             ! length $form->field('editcontent')) {
 462                                 my $content="";
 463                                 if (exists $pagesources{lc($page)}) {
 464                                         $content=readfile(srcfile($pagesources{lc($page)}));
 465                                         $content=~s/\n/\r\n/g;
 466                                 }
 467                                 $form->field(name => "editcontent", value => $content,
 468                                         force => 1);
 469                         }
 470                         $form->tmpl_param("page_select", 0);
 471                         $form->field(name => "page", type => 'hidden');
 472                         $form->title("editing ".pagetitle($page));
 473                 }
 474
 475                 print $form->render(submit => \@buttons);
 476         }
 477         else {
 478                 # save page
 479                 page_locked($page, $session);
 480
 481                 my $content=$form->field('editcontent');
 482
 483                 $content=~s/\r\n/\n/g;
 484                 $content=~s/\r/\n/g;
 485                 writefile($file, $config{srcdir}, $content);
 486
 487                 my $message="web commit ";
 488                 if (defined $session->param("name") &&
 489                     length $session->param("name")) {
 490                         $message.="by ".$session->param("name");
 491                 }
 492                 else {
 493                         $message.="from $ENV{REMOTE_ADDR}";
 494                 }
 495                 if (defined $form->field('comments') &&
 496                     length $form->field('comments')) {
 497                         $message.=": ".$form->field('comments');
 498                 }
 499
 500                 if ($config{rcs}) {
 501                         if ($newfile) {
 502                                 rcs_add($file);
 503                         }
 504                         # prevent deadlock with post-commit hook
 505                         unlockwiki();
 506                         # presumably the commit will trigger an update
 507                         # of the wiki
 508                         my $conflict=rcs_commit($file, $message,
 509                                 $form->field("rcsinfo"));
 510
 511                         if (defined $conflict) {
 512                                 $form->field(name => "rcsinfo", value => rcs_prepedit($file),
 513                                         force => 1);
 514                                 $form->tmpl_param("page_conflict", 1);
 515                                 $form->field("editcontent", value => $conflict, force => 1);
 516                                 $form->field(name => "comments", value => $form->field('comments'), force => 1);
 517                                 $form->field("do", "edit)");
 518                                 $form->tmpl_param("page_select", 0);
 519                                 $form->field(name => "page", type => 'hidden');
 520                                 $form->title("editing $page");
 521                                 print $form->render(submit => \@buttons);
 522                                 return;
 523                         }
 524                 }
 525                 else {
 526                         require IkiWiki::Render;
 527                         refresh();
 528                         saveindex();
 529                 }
 530
 531                 # The trailing question mark tries to avoid broken
 532                 # caches and get the most recent version of the page.
 533                 redirect($q, "$config{url}/".htmlpage($page)."?updated");
 534         }
 535 } #}}}
 536
 537 sub cgi () { #{{{
 538         eval q{use CGI};
 539         eval q{use CGI::Session};
 540
 541         my $q=CGI->new;
 542
 543         if (exists $hooks{cgi}) {
 544                 foreach my $id (keys %{$hooks{cgi}}) {
 545                         $hooks{cgi}{$id}{call}->($q);
 546                 }
 547         }
 548
 549         my $do=$q->param('do');
 550         if (! defined $do || ! length $do) {
 551                 my $error = $q->cgi_error;
 552                 if ($error) {
 553                         error("Request not processed: $error");
 554                 }
 555                 else {
 556                         error("\"do\" parameter missing");
 557                 }
 558         }
 559
 560         # Things that do not need a session.
 561         if ($do eq 'recentchanges') {
 562                 cgi_recentchanges($q);
 563                 return;
 564         }
 565         elsif ($do eq 'hyperestraier') {
 566                 cgi_hyperestraier();
 567         }
 568
 569         CGI::Session->name("ikiwiki_session_$config{wikiname}");
 570
 571         my $oldmask=umask(077);
 572         my $session = CGI::Session->new("driver:DB_File", $q,
 573                 { FileName => "$config{wikistatedir}/sessions.db" });
 574         umask($oldmask);
 575
 576         # Everything below this point needs the user to be signed in.
 577         if ((! $config{anonok} &&
 578              (! defined $session->param("name") ||
 579              ! userinfo_get($session->param("name"), "regdate"))) || $do eq 'signin') {
 580                 cgi_signin($q, $session);
 581
 582                 # Force session flush with safe umask.
 583                 my $oldmask=umask(077);
 584                 $session->flush;
 585                 umask($oldmask);
 586
 587                 return;
 588         }
 589
 590         if ($do eq 'create' || $do eq 'edit') {
 591                 cgi_editpage($q, $session);
 592         }
 593         elsif ($do eq 'prefs') {
 594                 cgi_prefs($q, $session);
 595         }
 596         elsif ($do eq 'blog') {
 597                 my $page=titlepage(lc($q->param('title')));
 598                 # if the page already exists, munge it to be unique
 599                 my $from=$q->param('from');
 600                 my $add="";
 601                 while (exists $oldpagemtime{"$from/$page$add"}) {
 602                         $add=1 unless length $add;
 603                         $add++;
 604                 }
 605                 $q->param('page', $page.$add);
 606                 # now run same as create
 607                 $q->param('do', 'create');
 608                 cgi_editpage($q, $session);
 609         }
 610         else {
 611                 error("unknown do parameter");
 612         }
 613 } #}}}
 614
 615 1