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                 baseurl => baseurl(),
  74         );
  75         print $q->header(-charset=>'utf-8'), $template->output;
  76 } #}}}
  77
  78 sub cgi_signin ($$) { #{{{
  79         my $q=shift;
  80         my $session=shift;
  81
  82         eval q{use CGI::FormBuilder};
  83         my $form = CGI::FormBuilder->new(
  84                 title => "signin",
  85                 fields => [qw(do title page subpage from name password confirm_password email)],
  86                 header => 1,
  87                 charset => "utf-8",
  88                 method => 'POST',
  89                 validate => {
  90                         confirm_password => {
  91                                 perl => q{eq $form->field("password")},
  92                         },
  93                         email => 'EMAIL',
  94                 },
  95                 required => 'NONE',
  96                 javascript => 0,
  97                 params => $q,
  98                 action => $config{cgiurl},
  99                 header => 0,
 100                 template => (-e "$config{templatedir}/signin.tmpl" ?
 101                              {template_params("signin.tmpl")} : ""),
 102                 stylesheet => baseurl()."style.css",
 103         );
 104
 105         decode_form_utf8($form);
 106
 107         $form->field(name => "name", required => 0);
 108         $form->field(name => "do", type => "hidden");
 109         $form->field(name => "page", type => "hidden");
 110         $form->field(name => "title", type => "hidden");
 111         $form->field(name => "from", type => "hidden");
 112         $form->field(name => "subpage", type => "hidden");
 113         $form->field(name => "password", type => "password", required => 0);
 114         $form->field(name => "confirm_password", type => "password", required => 0);
 115         $form->field(name => "email", required => 0);
 116         if ($q->param("do") ne "signin" && !$form->submitted) {
 117                 $form->text("You need to log in first.");
 118         }
 119
 120         if ($form->submitted) {
 121                 # Set required fields based on how form was submitted.
 122                 my %required=(
 123                         "Login" => [qw(name password)],
 124                         "Register" => [qw(name password confirm_password email)],
 125                         "Mail Password" => [qw(name)],
 126                 );
 127                 foreach my $opt (@{$required{$form->submitted}}) {
 128                         $form->field(name => $opt, required => 1);
 129                 }
 130
 131                 # Validate password differently depending on how
 132                 # form was submitted.
 133                 if ($form->submitted eq 'Login') {
 134                         $form->field(
 135                                 name => "password",
 136                                 validate => sub {
 137                                         length $form->field("name") &&
 138                                         shift eq userinfo_get($form->field("name"), 'password');
 139                                 },
 140                         );
 141                         $form->field(name => "name", validate => '/^\w+$/');
 142                 }
 143                 else {
 144                         $form->field(name => "password", validate => 'VALUE');
 145                 }
 146                 # And make sure the entered name exists when logging
 147                 # in or sending email, and does not when registering.
 148                 if ($form->submitted eq 'Register') {
 149                         $form->field(
 150                                 name => "name",
 151                                 validate => sub {
 152                                         my $name=shift;
 153                                         length $name &&
 154                                         $name=~/$config{wiki_file_regexp}/ &&
 155                                         ! userinfo_get($name, "regdate");
 156                                 },
 157                         );
 158                 }
 159                 else {
 160                         $form->field(
 161                                 name => "name",
 162                                 validate => sub {
 163                                         my $name=shift;
 164                                         length $name &&
 165                                         userinfo_get($name, "regdate");
 166                                 },
 167                         );
 168                 }
 169         }
 170         else {
 171                 # First time settings.
 172                 $form->field(name => "name", comment => "use FirstnameLastName");
 173                 $form->field(name => "confirm_password", comment => "(only needed");
 174                 $form->field(name => "email",            comment => "for registration)");
 175                 if ($session->param("name")) {
 176                         $form->field(name => "name", value => $session->param("name"));
 177                 }
 178         }
 179
 180         if ($form->submitted && $form->validate) {
 181                 if ($form->submitted eq 'Login') {
 182                         $session->param("name", $form->field("name"));
 183                         if (defined $form->field("do") &&
 184                             $form->field("do") ne 'signin') {
 185                                 redirect($q, cgiurl(
 186                                         do => $form->field("do"),
 187                                         page => $form->field("page"),
 188                                         title => $form->field("title"),
 189                                         subpage => $form->field("subpage"),
 190                                         from => $form->field("from"),
 191                                 ));
 192                         }
 193                         else {
 194                                 redirect($q, $config{url});
 195                         }
 196                 }
 197                 elsif ($form->submitted eq 'Register') {
 198                         my $user_name=$form->field('name');
 199                         if (userinfo_setall($user_name, {
 200                                            'email' => $form->field('email'),
 201                                            'password' => $form->field('password'),
 202                                            'regdate' => time
 203                                          })) {
 204                                 $form->field(name => "confirm_password", type => "hidden");
 205                                 $form->field(name => "email", type => "hidden");
 206                                 $form->text("Registration successful. Now you can Login.");
 207                                 print $session->header(-charset=>'utf-8');
 208                                 print misctemplate($form->title, $form->render(submit => ["Login"]));
 209                         }
 210                         else {
 211                                 error("Error saving registration.");
 212                         }
 213                 }
 214                 elsif ($form->submitted eq 'Mail Password') {
 215                         my $user_name=$form->field("name");
 216                         my $template=template("passwordmail.tmpl");
 217                         $template->param(
 218                                 user_name => $user_name,
 219                                 user_password => userinfo_get($user_name, "password"),
 220                                 wikiurl => $config{url},
 221                                 wikiname => $config{wikiname},
 222                                 REMOTE_ADDR => $ENV{REMOTE_ADDR},
 223                         );
 224
 225                         eval q{use Mail::Sendmail};
 226                         sendmail(
 227                                 To => userinfo_get($user_name, "email"),
 228                                 From => "$config{wikiname} admin <$config{adminemail}>",
 229                                 Subject => "$config{wikiname} information",
 230                                 Message => $template->output,
 231                         ) or error("Failed to send mail");
 232
 233                         $form->text("Your password has been emailed to you.");
 234                         $form->field(name => "name", required => 0);
 235                         print $session->header(-charset=>'utf-8');
 236                         print misctemplate($form->title, $form->render(submit => ["Login", "Register", "Mail Password"]));
 237                 }
 238         }
 239         else {
 240                 print $session->header(-charset=>'utf-8');
 241                 print misctemplate($form->title, $form->render(submit => ["Login", "Register", "Mail Password"]));
 242         }
 243 } #}}}
 244
 245 sub cgi_prefs ($$) { #{{{
 246         my $q=shift;
 247         my $session=shift;
 248
 249         eval q{use CGI::FormBuilder};
 250         my $form = CGI::FormBuilder->new(
 251                 title => "preferences",
 252                 fields => [qw(do name password confirm_password email
 253                               subscriptions locked_pages)],
 254                 header => 0,
 255                 charset => "utf-8",
 256                 method => 'POST',
 257                 validate => {
 258                         confirm_password => {
 259                                 perl => q{eq $form->field("password")},
 260                         },
 261                         email => 'EMAIL',
 262                 },
 263                 required => 'NONE',
 264                 javascript => 0,
 265                 params => $q,
 266                 action => $config{cgiurl},
 267                 template => (-e "$config{templatedir}/prefs.tmpl" ?
 268                              {template_params("prefs.tmpl")} : ""),
 269                 stylesheet => baseurl()."style.css",
 270         );
 271         my @buttons=("Save Preferences", "Logout", "Cancel");
 272
 273         my $user_name=$session->param("name");
 274         $form->field(name => "do", type => "hidden");
 275         $form->field(name => "name", disabled => 1,
 276                 value => $user_name, force => 1);
 277         $form->field(name => "password", type => "password");
 278         $form->field(name => "confirm_password", type => "password");
 279         $form->field(name => "subscriptions", size => 50,
 280                 comment => "(".htmllink("", "", "PageSpec", 1).")");
 281         $form->field(name => "locked_pages", size => 50,
 282                 comment => "(".htmllink("", "", "PageSpec", 1).")");
 283
 284         if (! is_admin($user_name)) {
 285                 $form->field(name => "locked_pages", type => "hidden");
 286         }
 287
 288         if (! $form->submitted) {
 289                 $form->field(name => "email", force => 1,
 290                         value => userinfo_get($user_name, "email"));
 291                 $form->field(name => "subscriptions", force => 1,
 292                         value => userinfo_get($user_name, "subscriptions"));
 293                 $form->field(name => "locked_pages", force => 1,
 294                         value => userinfo_get($user_name, "locked_pages"));
 295         }
 296
 297         decode_form_utf8($form);
 298
 299         if ($form->submitted eq 'Logout') {
 300                 $session->delete();
 301                 redirect($q, $config{url});
 302                 return;
 303         }
 304         elsif ($form->submitted eq 'Cancel') {
 305                 redirect($q, $config{url});
 306                 return;
 307         }
 308         elsif ($form->submitted eq "Save Preferences" && $form->validate) {
 309                 foreach my $field (qw(password email subscriptions locked_pages)) {
 310                         if (length $form->field($field)) {
 311                                 userinfo_set($user_name, $field, $form->field($field)) || error("failed to set $field");
 312                         }
 313                 }
 314                 $form->text("Preferences saved.");
 315         }
 316
 317         print $session->header(-charset=>'utf-8');
 318         print misctemplate($form->title, $form->render(submit => \@buttons));
 319 } #}}}
 320
 321 sub cgi_editpage ($$) { #{{{
 322         my $q=shift;
 323         my $session=shift;
 324
 325         eval q{use CGI::FormBuilder};
 326         my $form = CGI::FormBuilder->new(
 327                 fields => [qw(do rcsinfo subpage from page type editcontent comments)],
 328                 header => 1,
 329                 charset => "utf-8",
 330                 method => 'POST',
 331                 validate => {
 332                         editcontent => '/.+/',
 333                 },
 334                 required => [qw{editcontent}],
 335                 javascript => 0,
 336                 params => $q,
 337                 action => $config{cgiurl},
 338                 table => 0,
 339                 template => {template_params("editpage.tmpl")},
 340         );
 341         my @buttons=("Save Page", "Preview", "Cancel");
 342
 343         decode_form_utf8($form);
 344
 345         # This untaint is safe because titlepage removes any problematic
 346         # characters.
 347         my ($page)=$form->field('page');
 348         $page=titlepage(possibly_foolish_untaint($page));
 349         if (! defined $page || ! length $page ||
 350             $page=~/$config{wiki_file_prune_regexp}/ || $page=~/^\//) {
 351                 error("bad page name");
 352         }
 353
 354         my $from;
 355         if (defined $form->field('from')) {
 356                 ($from)=$form->field('from')=~/$config{wiki_file_regexp}/;
 357         }
 358
 359         my $file;
 360         my $type;
 361         if (exists $pagesources{$page}) {
 362                 $file=$pagesources{$page};
 363                 $type=pagetype($file);
 364         }
 365         else {
 366                 $type=$form->param('type');
 367                 if (defined $type && length $type && $hooks{htmlize}{$type}) {
 368                         $type=possibly_foolish_untaint($type);
 369                 }
 370                 elsif (defined $from) {
 371                         # favor the type of linking page
 372                         $type=pagetype($pagesources{$from});
 373                 }
 374                 $type=$config{default_pageext} unless defined $type;
 375                 $file=$page.".".$type;
 376         }
 377
 378         my $newfile=0;
 379         if (! -e "$config{srcdir}/$file") {
 380                 $newfile=1;
 381         }
 382
 383         $form->field(name => "do", type => 'hidden');
 384         $form->field(name => "from", type => 'hidden');
 385         $form->field(name => "rcsinfo", type => 'hidden');
 386         $form->field(name => "subpage", type => 'hidden');
 387         $form->field(name => "page", value => $page, force => 1);
 388         $form->field(name => "type", value => $type, force => 1);
 389         $form->field(name => "comments", type => "text", size => 80);
 390         $form->field(name => "editcontent", type => "textarea", rows => 20,
 391                 cols => 80);
 392         $form->tmpl_param("can_commit", $config{rcs});
 393         $form->tmpl_param("indexlink", indexlink());
 394         $form->tmpl_param("helponformattinglink",
 395                 htmllink("", "", "HelpOnFormatting", 1));
 396         $form->tmpl_param("baseurl", baseurl());
 397         if (! $form->submitted) {
 398                 $form->field(name => "rcsinfo", value => rcs_prepedit($file),
 399                         force => 1);
 400         }
 401
 402         if ($form->submitted eq "Cancel") {
 403                 redirect($q, "$config{url}/".htmlpage($page));
 404                 return;
 405         }
 406         elsif ($form->submitted eq "Preview") {
 407                 require IkiWiki::Render;
 408                 my $content=$form->field('editcontent');
 409                 my $comments=$form->field('comments');
 410                 $form->field(name => "editcontent",
 411                                 value => $content, force => 1);
 412                 $form->field(name => "comments",
 413                                 value => $comments, force => 1);
 414                 $config{rss}=0; # avoid preview writing an rss feed!
 415                 $form->tmpl_param("page_preview",
 416                         htmlize($type,
 417                         linkify($page, "",
 418                         preprocess($page, $page,
 419                         filter($page, $content)))));
 420         }
 421         else {
 422                 $form->tmpl_param("page_preview", "");
 423         }
 424         $form->tmpl_param("page_conflict", "");
 425
 426         if (! $form->submitted || $form->submitted eq "Preview" ||
 427             ! $form->validate) {
 428                 if ($form->field("do") eq "create") {
 429                         my @page_locs;
 430                         my $best_loc;
 431                         if (! defined $from || ! length $from ||
 432                             $from ne $form->field('from') ||
 433                             $from=~/$config{wiki_file_prune_regexp}/ ||
 434                             $from=~/^\// ||
 435                             $form->submitted eq "Preview") {
 436                                 @page_locs=$best_loc=$page;
 437                         }
 438                         else {
 439                                 my $dir=$from."/";
 440                                 $dir=~s![^/]+/+$!!;
 441
 442                                 if ((defined $form->field('subpage') && length $form->field('subpage')) ||
 443                                     $page eq 'discussion') {
 444                                         $best_loc="$from/$page";
 445                                 }
 446                                 else {
 447                                         $best_loc=$dir.$page;
 448                                 }
 449
 450                                 push @page_locs, $dir.$page;
 451                                 push @page_locs, "$from/$page";
 452                                 while (length $dir) {
 453                                         $dir=~s![^/]+/+$!!;
 454                                         push @page_locs, $dir.$page;
 455                                 }
 456                         }
 457
 458                         @page_locs = grep {
 459                                 ! exists $pagecase{lc $_} &&
 460                                 ! page_locked($_, $session, 1)
 461                         } @page_locs;
 462
 463                         if (! @page_locs) {
 464                                 # hmm, someone else made the page in the
 465                                 # meantime?
 466                                 redirect($q, "$config{url}/".htmlpage($page));
 467                                 return;
 468                         }
 469
 470                         my @page_types;
 471                         if (exists $hooks{htmlize}) {
 472                                 @page_types=keys %{$hooks{htmlize}};
 473                         }
 474
 475                         $form->tmpl_param("page_select", 1);
 476                         $form->field(name => "page", type => 'select',
 477                                 options => \@page_locs, value => $best_loc);
 478                         $form->field(name => "type", type => 'select',
 479                                 options => \@page_types);
 480                         $form->title("creating ".pagetitle($page));
 481                 }
 482                 elsif ($form->field("do") eq "edit") {
 483                         page_locked($page, $session);
 484                         if (! defined $form->field('editcontent') ||
 485                             ! length $form->field('editcontent')) {
 486                                 my $content="";
 487                                 if (exists $pagesources{$page}) {
 488                                         $content=readfile(srcfile($pagesources{$page}));
 489                                         $content=~s/\n/\r\n/g;
 490                                 }
 491                                 $form->field(name => "editcontent", value => $content,
 492                                         force => 1);
 493                         }
 494                         $form->tmpl_param("page_select", 0);
 495                         $form->field(name => "page", type => 'hidden');
 496                         $form->field(name => "type", type => 'hidden');
 497                         $form->title("editing ".pagetitle($page));
 498                 }
 499
 500                 print $form->render(submit => \@buttons);
 501         }
 502         else {
 503                 # save page
 504                 page_locked($page, $session);
 505
 506                 my $content=$form->field('editcontent');
 507
 508                 $content=~s/\r\n/\n/g;
 509                 $content=~s/\r/\n/g;
 510                 writefile($file, $config{srcdir}, $content);
 511
 512                 my $message="web commit ";
 513                 if (defined $session->param("name") &&
 514                     length $session->param("name")) {
 515                         $message.="by ".$session->param("name");
 516                 }
 517                 else {
 518                         $message.="from $ENV{REMOTE_ADDR}";
 519                 }
 520                 if (defined $form->field('comments') &&
 521                     length $form->field('comments')) {
 522                         $message.=": ".$form->field('comments');
 523                 }
 524
 525                 if ($config{rcs}) {
 526                         if ($newfile) {
 527                                 rcs_add($file);
 528                         }
 529                         # prevent deadlock with post-commit hook
 530                         unlockwiki();
 531                         # presumably the commit will trigger an update
 532                         # of the wiki
 533                         my $conflict=rcs_commit($file, $message,
 534                                 $form->field("rcsinfo"));
 535
 536                         if (defined $conflict) {
 537                                 $form->field(name => "rcsinfo", value => rcs_prepedit($file),
 538                                         force => 1);
 539                                 $form->tmpl_param("page_conflict", 1);
 540                                 $form->field("editcontent", value => $conflict, force => 1);
 541                                 $form->field(name => "comments", value => $form->field('comments'), force => 1);
 542                                 $form->field("do", "edit)");
 543                                 $form->tmpl_param("page_select", 0);
 544                                 $form->field(name => "page", type => 'hidden');
 545                                 $form->field(name => "type", type => 'hidden');
 546                                 $form->title("editing $page");
 547                                 print $form->render(submit => \@buttons);
 548                                 return;
 549                         }
 550                 }
 551                 else {
 552                         require IkiWiki::Render;
 553                         refresh();
 554                         saveindex();
 555                 }
 556
 557                 # The trailing question mark tries to avoid broken
 558                 # caches and get the most recent version of the page.
 559                 redirect($q, "$config{url}/".htmlpage($page)."?updated");
 560         }
 561 } #}}}
 562
 563 sub cgi () { #{{{
 564         eval q{use CGI};
 565         eval q{use CGI::Session};
 566
 567         my $q=CGI->new;
 568
 569         run_hooks(cgi => sub { shift->($q) });
 570
 571         my $do=$q->param('do');
 572         if (! defined $do || ! length $do) {
 573                 my $error = $q->cgi_error;
 574                 if ($error) {
 575                         error("Request not processed: $error");
 576                 }
 577                 else {
 578                         error("\"do\" parameter missing");
 579                 }
 580         }
 581
 582         # Things that do not need a session.
 583         if ($do eq 'recentchanges') {
 584                 cgi_recentchanges($q);
 585                 return;
 586         }
 587         elsif ($do eq 'hyperestraier') {
 588                 cgi_hyperestraier();
 589         }
 590
 591         CGI::Session->name("ikiwiki_session_$config{wikiname}");
 592
 593         my $oldmask=umask(077);
 594         my $session = CGI::Session->new("driver:DB_File", $q,
 595                 { FileName => "$config{wikistatedir}/sessions.db" });
 596         umask($oldmask);
 597
 598         # Everything below this point needs the user to be signed in.
 599         if ((! $config{anonok} &&
 600              (! defined $session->param("name") ||
 601              ! userinfo_get($session->param("name"), "regdate"))) || $do eq 'signin') {
 602                 cgi_signin($q, $session);
 603
 604                 # Force session flush with safe umask.
 605                 my $oldmask=umask(077);
 606                 $session->flush;
 607                 umask($oldmask);
 608
 609                 return;
 610         }
 611
 612         if ($do eq 'create' || $do eq 'edit') {
 613                 cgi_editpage($q, $session);
 614         }
 615         elsif ($do eq 'prefs') {
 616                 cgi_prefs($q, $session);
 617         }
 618         elsif ($do eq 'blog') {
 619                 my $page=titlepage(decode_utf8($q->param('title')));
 620                 # if the page already exists, munge it to be unique
 621                 my $from=$q->param('from');
 622                 my $add="";
 623                 while (exists $pagecase{lc "$from/$page$add"}) {
 624                         $add=1 unless length $add;
 625                         $add++;
 626                 }
 627                 $q->param('page', $page.$add);
 628                 # now run same as create
 629                 $q->param('do', 'create');
 630                 cgi_editpage($q, $session);
 631         }
 632         else {
 633                 error("unknown do parameter");
 634         }
 635 } #}}}
 636
 637 1