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 (pagespec_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" && !$form->submitted) {
 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("", "", "PageSpec", 1).")");
 282         $form->field(name => "locked_pages", size => 50,
 283                 comment => "(".htmllink("", "", "PageSpec", 1).")");
 284
 285         if (! is_admin($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 type 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         $page=titlepage(possibly_foolish_untaint($page));
 350         if (! defined $page || ! length $page ||
 351             $page=~/$config{wiki_file_prune_regexp}/ || $page=~/^\//) {
 352                 error("bad page name");
 353         }
 354
 355         my $from;
 356         if (defined $form->field('from')) {
 357                 ($from)=$form->field('from')=~/$config{wiki_file_regexp}/;
 358         }
 359
 360         my $file;
 361         my $type;
 362         if (exists $pagesources{$page}) {
 363                 $file=$pagesources{$page};
 364                 $type=pagetype($file);
 365         }
 366         else {
 367                 $type=$form->param('type');
 368                 if (defined $type && length $type && $hooks{htmlize}{$type}) {
 369                         $type=possibly_foolish_untaint($type);
 370                 }
 371                 elsif (defined $from) {
 372                         # favor the type of linking page
 373                         $type=pagetype($pagesources{$from});
 374                 }
 375                 $type=$config{default_pageext} unless defined $type;
 376                 $file=$page.".".$type;
 377         }
 378
 379         my $newfile=0;
 380         if (! -e "$config{srcdir}/$file") {
 381                 $newfile=1;
 382         }
 383
 384         $form->field(name => "do", type => 'hidden');
 385         $form->field(name => "from", type => 'hidden');
 386         $form->field(name => "rcsinfo", type => 'hidden');
 387         $form->field(name => "subpage", type => 'hidden');
 388         $form->field(name => "page", value => $page, force => 1);
 389         $form->field(name => "type", value => $type, force => 1);
 390         $form->field(name => "comments", type => "text", size => 80);
 391         $form->field(name => "editcontent", type => "textarea", rows => 20,
 392                 cols => 80);
 393         $form->tmpl_param("can_commit", $config{rcs});
 394         $form->tmpl_param("indexlink", indexlink());
 395         $form->tmpl_param("helponformattinglink",
 396                 htmllink("", "", "HelpOnFormatting", 1));
 397         $form->tmpl_param("styleurl", styleurl());
 398         $form->tmpl_param("baseurl", "$config{url}/");
 399         if (! $form->submitted) {
 400                 $form->field(name => "rcsinfo", value => rcs_prepedit($file),
 401                         force => 1);
 402         }
 403
 404         if ($form->submitted eq "Cancel") {
 405                 redirect($q, "$config{url}/".htmlpage($page));
 406                 return;
 407         }
 408         elsif ($form->submitted eq "Preview") {
 409                 require IkiWiki::Render;
 410                 my $content=$form->field('editcontent');
 411                 my $comments=$form->field('comments');
 412                 $form->field(name => "editcontent",
 413                                 value => $content, force => 1);
 414                 $form->field(name => "comments",
 415                                 value => $comments, force => 1);
 416                 $form->tmpl_param("page_preview",
 417                         htmlize($type, linkify($page, $page, filter($page, $content))));
 418         }
 419         else {
 420                 $form->tmpl_param("page_preview", "");
 421         }
 422         $form->tmpl_param("page_conflict", "");
 423
 424         if (! $form->submitted || $form->submitted eq "Preview" ||
 425             ! $form->validate) {
 426                 if ($form->field("do") eq "create") {
 427                         my @page_locs;
 428                         my $best_loc;
 429                         if (! defined $from || ! length $from ||
 430                             $from ne $form->field('from') ||
 431                             $from=~/$config{wiki_file_prune_regexp}/ ||
 432                             $from=~/^\// ||
 433                             $form->submitted eq "Preview") {
 434                                 @page_locs=$best_loc=$page;
 435                         }
 436                         else {
 437                                 my $dir=$from."/";
 438                                 $dir=~s![^/]+/+$!!;
 439
 440                                 if ((defined $form->field('subpage') && length $form->field('subpage')) ||
 441                                     $page eq 'discussion') {
 442                                         $best_loc="$from/$page";
 443                                 }
 444                                 else {
 445                                         $best_loc=$dir.$page;
 446                                 }
 447
 448                                 push @page_locs, $dir.$page;
 449                                 push @page_locs, "$from/$page";
 450                                 while (length $dir) {
 451                                         $dir=~s![^/]+/+$!!;
 452                                         push @page_locs, $dir.$page;
 453                                 }
 454                         }
 455
 456                         @page_locs = grep {
 457                                 ! exists $pagecase{lc $_} &&
 458                                 ! page_locked($_, $session, 1)
 459                         } @page_locs;
 460
 461                         if (! @page_locs) {
 462                                 # hmm, someone else made the page in the
 463                                 # meantime?
 464                                 redirect($q, "$config{url}/".htmlpage($page));
 465                                 return;
 466                         }
 467
 468                         my @page_types;
 469                         if (exists $hooks{htmlize}) {
 470                                 @page_types=keys %{$hooks{htmlize}};
 471                         }
 472
 473                         $form->tmpl_param("page_select", 1);
 474                         $form->field(name => "page", type => 'select',
 475                                 options => \@page_locs, value => $best_loc);
 476                         $form->field(name => "type", type => 'select',
 477                                 options => \@page_types);
 478                         $form->title("creating ".pagetitle($page));
 479                 }
 480                 elsif ($form->field("do") eq "edit") {
 481                         page_locked($page, $session);
 482                         if (! defined $form->field('editcontent') ||
 483                             ! length $form->field('editcontent')) {
 484                                 my $content="";
 485                                 if (exists $pagesources{$page}) {
 486                                         $content=readfile(srcfile($pagesources{$page}));
 487                                         $content=~s/\n/\r\n/g;
 488                                 }
 489                                 $form->field(name => "editcontent", value => $content,
 490                                         force => 1);
 491                         }
 492                         $form->tmpl_param("page_select", 0);
 493                         $form->field(name => "page", type => 'hidden');
 494                         $form->field(name => "type", type => 'hidden');
 495                         $form->title("editing ".pagetitle($page));
 496                 }
 497
 498                 print $form->render(submit => \@buttons);
 499         }
 500         else {
 501                 # save page
 502                 page_locked($page, $session);
 503
 504                 my $content=$form->field('editcontent');
 505
 506                 $content=~s/\r\n/\n/g;
 507                 $content=~s/\r/\n/g;
 508                 writefile($file, $config{srcdir}, $content);
 509
 510                 my $message="web commit ";
 511                 if (defined $session->param("name") &&
 512                     length $session->param("name")) {
 513                         $message.="by ".$session->param("name");
 514                 }
 515                 else {
 516                         $message.="from $ENV{REMOTE_ADDR}";
 517                 }
 518                 if (defined $form->field('comments') &&
 519                     length $form->field('comments')) {
 520                         $message.=": ".$form->field('comments');
 521                 }
 522
 523                 if ($config{rcs}) {
 524                         if ($newfile) {
 525                                 rcs_add($file);
 526                         }
 527                         # prevent deadlock with post-commit hook
 528                         unlockwiki();
 529                         # presumably the commit will trigger an update
 530                         # of the wiki
 531                         my $conflict=rcs_commit($file, $message,
 532                                 $form->field("rcsinfo"));
 533
 534                         if (defined $conflict) {
 535                                 $form->field(name => "rcsinfo", value => rcs_prepedit($file),
 536                                         force => 1);
 537                                 $form->tmpl_param("page_conflict", 1);
 538                                 $form->field("editcontent", value => $conflict, force => 1);
 539                                 $form->field(name => "comments", value => $form->field('comments'), force => 1);
 540                                 $form->field("do", "edit)");
 541                                 $form->tmpl_param("page_select", 0);
 542                                 $form->field(name => "page", type => 'hidden');
 543                                 $form->field(name => "type", type => 'hidden');
 544                                 $form->title("editing $page");
 545                                 print $form->render(submit => \@buttons);
 546                                 return;
 547                         }
 548                 }
 549                 else {
 550                         require IkiWiki::Render;
 551                         refresh();
 552                         saveindex();
 553                 }
 554
 555                 # The trailing question mark tries to avoid broken
 556                 # caches and get the most recent version of the page.
 557                 redirect($q, "$config{url}/".htmlpage($page)."?updated");
 558         }
 559 } #}}}
 560
 561 sub cgi () { #{{{
 562         eval q{use CGI};
 563         eval q{use CGI::Session};
 564
 565         my $q=CGI->new;
 566
 567         run_hooks(cgi => sub { shift->($q) });
 568
 569         my $do=$q->param('do');
 570         if (! defined $do || ! length $do) {
 571                 my $error = $q->cgi_error;
 572                 if ($error) {
 573                         error("Request not processed: $error");
 574                 }
 575                 else {
 576                         error("\"do\" parameter missing");
 577                 }
 578         }
 579
 580         # Things that do not need a session.
 581         if ($do eq 'recentchanges') {
 582                 cgi_recentchanges($q);
 583                 return;
 584         }
 585         elsif ($do eq 'hyperestraier') {
 586                 cgi_hyperestraier();
 587         }
 588
 589         CGI::Session->name("ikiwiki_session_$config{wikiname}");
 590
 591         my $oldmask=umask(077);
 592         my $session = CGI::Session->new("driver:DB_File", $q,
 593                 { FileName => "$config{wikistatedir}/sessions.db" });
 594         umask($oldmask);
 595
 596         # Everything below this point needs the user to be signed in.
 597         if ((! $config{anonok} &&
 598              (! defined $session->param("name") ||
 599              ! userinfo_get($session->param("name"), "regdate"))) || $do eq 'signin') {
 600                 cgi_signin($q, $session);
 601
 602                 # Force session flush with safe umask.
 603                 my $oldmask=umask(077);
 604                 $session->flush;
 605                 umask($oldmask);
 606
 607                 return;
 608         }
 609
 610         if ($do eq 'create' || $do eq 'edit') {
 611                 cgi_editpage($q, $session);
 612         }
 613         elsif ($do eq 'prefs') {
 614                 cgi_prefs($q, $session);
 615         }
 616         elsif ($do eq 'blog') {
 617                 my $page=titlepage(decode_utf8($q->param('title')));
 618                 # if the page already exists, munge it to be unique
 619                 my $from=$q->param('from');
 620                 my $add="";
 621                 while (exists $pagecase{lc "$from/$page$add"}) {
 622                         $add=1 unless length $add;
 623                         $add++;
 624                 }
 625                 $q->param('page', $page.$add);
 626                 # now run same as create
 627                 $q->param('do', 'create');
 628                 cgi_editpage($q, $session);
 629         }
 630         else {
 631                 error("unknown do parameter");
 632         }
 633 } #}}}
 634
 635 1