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 ($$) { #{{{
  25         my $q=shift;
  26         my $url=shift;
  27         if (! $config{w3mmode}) {
  28                 print $q->redirect($url);
  29         }
  30         else {
  31                 print "Content-type: text/plain\n";
  32                 print "W3m-control: GOTO $url\n\n";
  33         }
  34 } #}}}
  35
  36 sub page_locked ($$;$) { #{{{
  37         my $page=shift;
  38         my $session=shift;
  39         my $nonfatal=shift;
  40
  41         my $user=$session->param("name");
  42         return if defined $user && is_admin($user);
  43
  44         foreach my $admin (@{$config{adminuser}}) {
  45                 my $locked_pages=userinfo_get($admin, "locked_pages");
  46                 if (pagespec_match($page, userinfo_get($admin, "locked_pages"))) {
  47                         return 1 if $nonfatal;
  48                         error(htmllink("", "", $page, 1)." is locked by ".
  49                               htmllink("", "", $admin, 1)." and cannot be edited.");
  50                 }
  51         }
  52
  53         return 0;
  54 } #}}}
  55
  56 sub decode_form_utf8 ($) { #{{{
  57         my $form = shift;
  58         foreach my $f ($form->field) {
  59                 next if Encode::is_utf8(scalar $form->field($f));
  60                 $form->field(name  => $f,
  61                              value => decode_utf8($form->field($f)),
  62                              force => 1,
  63                             );
  64         }
  65 } #}}}
  66
  67 sub cgi_recentchanges ($) { #{{{
  68         my $q=shift;
  69
  70         unlockwiki();
  71
  72         # Optimisation: building recentchanges means calculating lots of
  73         # links. Memoizing htmllink speeds it up a lot (can't be memoized
  74         # during page builds as the return values may change, but they
  75         # won't here.)
  76         eval q{use Memoize};
  77         error($@) if $@;
  78         memoize("htmllink");
  79
  80         eval q{use Time::Duration};
  81         error($@) if $@;
  82         eval q{use CGI 'escapeHTML'};
  83         error($@) if $@;
  84
  85         my $changelog=[rcs_recentchanges(100)];
  86         foreach my $change (@$changelog) {
  87                 $change->{when} = concise(ago($change->{when}));
  88
  89                 if ($change->{user} =~ m!^https?://! &&
  90                     eval q{use Net::OpenID::VerifiedIdentity; 1} && !$@) {
  91                         # Munge user-urls, as used by eg, OpenID.
  92                         my $oid=Net::OpenID::VerifiedIdentity->new(identity => $change->{user});
  93                         $change->{user} = "<a href=\"".$change->{user}."\">".escapeHTML($oid->display)."</a>";
  94                 }
  95                 else {
  96                         $change->{user} = htmllink("", "", escapeHTML($change->{user}), 1);
  97                 }
  98
  99                 my $is_excess = exists $change->{pages}[10]; # limit pages to first 10
 100                 delete @{$change->{pages}}[10 .. @{$change->{pages}}] if $is_excess;
 101                 $change->{pages} = [
 102                         map {
 103                                 $_->{link} = htmllink("", "", $_->{page}, 1);
 104                                 $_;
 105                         } @{$change->{pages}}
 106                 ];
 107                 push @{$change->{pages}}, { link => '...' } if $is_excess;
 108         }
 109
 110         my $template=template("recentchanges.tmpl");
 111         $template->param(
 112                 title => "RecentChanges",
 113                 indexlink => indexlink(),
 114                 wikiname => $config{wikiname},
 115                 changelog => $changelog,
 116                 baseurl => baseurl(),
 117         );
 118         run_hooks(pagetemplate => sub {
 119                 shift->(page => "", destpage => "", template => $template);
 120         });
 121         print $q->header(-charset => 'utf-8'), $template->output;
 122 } #}}}
 123
 124 sub cgi_signin ($$) { #{{{
 125         my $q=shift;
 126         my $session=shift;
 127
 128         eval q{use CGI::FormBuilder};
 129         error($@) if $@;
 130         my $form = CGI::FormBuilder->new(
 131                 title => "signin",
 132                 fields => [qw(do title page subpage from name password openid_url)],
 133                 header => 1,
 134                 charset => "utf-8",
 135                 method => 'POST',
 136                 validate => {
 137                         confirm_password => {
 138                                 perl => q{eq $form->field("password")},
 139                         },
 140                         email => 'EMAIL',
 141                 },
 142                 required => 'NONE',
 143                 javascript => 0,
 144                 params => $q,
 145                 action => $config{cgiurl},
 146                 header => 0,
 147                 template => (-e "$config{templatedir}/signin.tmpl" ?
 148                              {template_params("signin.tmpl")} : ""),
 149                 stylesheet => baseurl()."style.css",
 150         );
 151
 152         decode_form_utf8($form);
 153
 154         $form->field(name => "name", required => 0);
 155         $form->field(name => "do", type => "hidden");
 156         $form->field(name => "page", type => "hidden");
 157         $form->field(name => "title", type => "hidden");
 158         $form->field(name => "from", type => "hidden");
 159         $form->field(name => "subpage", type => "hidden");
 160         $form->field(name => "password", type => "password", required => 0);
 161         if ($config{openid}) {
 162                 $form->field(name => "openid_url", label => "OpenID",
 163                         comment => '('.htmllink("", "", "OpenID", 1, 0, "What's this?").')');
 164         }
 165         else {
 166                 $form->field(name => "openid_url", type => "hidden");
 167         }
 168         if ($form->submitted eq "Register" || $form->submitted eq "Create Account") {
 169                 $form->title("register");
 170                 $form->text("");
 171                 $form->fields(qw(do title page subpage from name password confirm_password email));
 172                 $form->field(name => "confirm_password", type => "password");
 173                 $form->field(name => "email", type => "text");
 174                 $form->field(name => "openid_url", type => "hidden");
 175         }
 176         if ($q->param("do") ne "signin" && !$form->submitted) {
 177                 $form->text("You need to log in first.");
 178         }
 179
 180         if ($form->submitted) {
 181                 my $submittype=$form->submitted;
 182                 # OpenID login uses the Login button, but validates
 183                 # differently.
 184                 if ($submittype eq "Login" && $config{openid} &&
 185                     length $form->field("openid_url")) {
 186                         $submittype="OpenID";
 187
 188                         $form->field(
 189                                 name => "openid_url",
 190                                 validate => sub {
 191                                         # FIXME: ugh
 192                                         IkiWiki::Plugin::openid::validate($q, $session, $form, shift);
 193                                 },
 194                         );
 195                 }
 196
 197                 # Set required fields based on how form was submitted.
 198                 my %required=(
 199                         "Login" => [qw(name password)],
 200                         "Register" => [],
 201                         "Create Account" => [qw(name password confirm_password email)],
 202                         "Mail Password" => [qw(name)],
 203                         "OpenID" => [qw(openid_url)],
 204                 );
 205                 foreach my $opt (@{$required{$submittype}}) {
 206                         $form->field(name => $opt, required => 1);
 207                 }
 208
 209                 # Validate password differently depending on how
 210                 # form was submitted.
 211                 if ($submittype eq 'Login') {
 212                         $form->field(
 213                                 name => "password",
 214                                 validate => sub {
 215                                         length $form->field("name") &&
 216                                         shift eq userinfo_get($form->field("name"), 'password');
 217                                 },
 218                         );
 219                         $form->field(name => "name", validate => '/^\w+$/');
 220                 }
 221                 elsif ($submittype ne 'OpenID') {
 222                         $form->field(name => "password", validate => 'VALUE');
 223                 }
 224                 # And make sure the entered name exists when logging
 225                 # in or sending email, and does not when registering.
 226                 if ($submittype eq 'Create Account' ||
 227                     $submittype eq 'Register') {
 228                         $form->field(
 229                                 name => "name",
 230                                 validate => sub {
 231                                         my $name=shift;
 232                                         length $name &&
 233                                         $name=~/$config{wiki_file_regexp}/ &&
 234                                         ! userinfo_get($name, "regdate");
 235                                 },
 236                         );
 237                 }
 238                 elsif ($submittype ne 'OpenID') {
 239                         $form->field(
 240                                 name => "name",
 241                                 validate => sub {
 242                                         my $name=shift;
 243                                         length $name &&
 244                                         userinfo_get($name, "regdate");
 245                                 },
 246                         );
 247                 }
 248         }
 249         else {
 250                 # First time settings.
 251                 $form->field(name => "name", comment => "use FirstnameLastName");
 252                 if ($session->param("name")) {
 253                         $form->field(name => "name", value => $session->param("name"));
 254                 }
 255         }
 256
 257         if ($form->submitted && $form->validate) {
 258                 if ($form->submitted eq 'Login') {
 259                         $session->param("name", $form->field("name"));
 260                         if (defined $form->field("do") &&
 261                             $form->field("do") ne 'signin') {
 262                                 redirect($q, cgiurl(
 263                                         do => $form->field("do"),
 264                                         page => $form->field("page"),
 265                                         title => $form->field("title"),
 266                                         from => $form->field("from"),
 267                                         subpage => $form->field("subpage"),
 268                                 ));
 269                         }
 270                         else {
 271                                 redirect($q, $config{url});
 272                         }
 273                 }
 274                 elsif ($form->submitted eq 'Create Account') {
 275                         my $user_name=$form->field('name');
 276                         if (userinfo_setall($user_name, {
 277                                            'email' => $form->field('email'),
 278                                            'password' => $form->field('password'),
 279                                            'regdate' => time
 280                                          })) {
 281                                 $form->field(name => "confirm_password", type => "hidden");
 282                                 $form->field(name => "email", type => "hidden");
 283                                 $form->text("Account creation successful. Now you can Login.");
 284                                 printheader($session);
 285                                 print misctemplate($form->title, $form->render(submit => ["Login"]));
 286                         }
 287                         else {
 288                                 error("Error creating account.");
 289                         }
 290                 }
 291                 elsif ($form->submitted eq 'Mail Password') {
 292                         my $user_name=$form->field("name");
 293                         my $template=template("passwordmail.tmpl");
 294                         $template->param(
 295                                 user_name => $user_name,
 296                                 user_password => userinfo_get($user_name, "password"),
 297                                 wikiurl => $config{url},
 298                                 wikiname => $config{wikiname},
 299                                 REMOTE_ADDR => $ENV{REMOTE_ADDR},
 300                         );
 301
 302                         eval q{use Mail::Sendmail};
 303                         error($@) if $@;
 304                         sendmail(
 305                                 To => userinfo_get($user_name, "email"),
 306                                 From => "$config{wikiname} admin <$config{adminemail}>",
 307                                 Subject => "$config{wikiname} information",
 308                                 Message => $template->output,
 309                         ) or error("Failed to send mail");
 310
 311                         $form->text("Your password has been emailed to you.");
 312                         $form->field(name => "name", required => 0);
 313                         printheader($session);
 314                         print misctemplate($form->title, $form->render(submit => ["Login", "Mail Password"]));
 315                 }
 316                 elsif ($form->submitted eq "Register") {
 317                         printheader($session);
 318                         print misctemplate($form->title, $form->render(submit => ["Create Account"]));
 319                 }
 320         }
 321         elsif ($form->submitted eq "Create Account") {
 322                 printheader($session);
 323                 print misctemplate($form->title, $form->render(submit => ["Create Account"]));
 324         }
 325         else {
 326                 printheader($session);
 327                 print misctemplate($form->title, $form->render(submit => ["Login", "Register", "Mail Password"]));
 328         }
 329 } #}}}
 330
 331 sub cgi_prefs ($$) { #{{{
 332         my $q=shift;
 333         my $session=shift;
 334
 335         eval q{use CGI::FormBuilder};
 336         error($@) if $@;
 337         my $form = CGI::FormBuilder->new(
 338                 title => "preferences",
 339                 fields => [qw(do name password confirm_password email
 340                               subscriptions locked_pages)],
 341                 header => 0,
 342                 charset => "utf-8",
 343                 method => 'POST',
 344                 validate => {
 345                         confirm_password => {
 346                                 perl => q{eq $form->field("password")},
 347                         },
 348                         email => 'EMAIL',
 349                 },
 350                 required => 'NONE',
 351                 javascript => 0,
 352                 params => $q,
 353                 action => $config{cgiurl},
 354                 template => (-e "$config{templatedir}/prefs.tmpl" ?
 355                              {template_params("prefs.tmpl")} : ""),
 356                 stylesheet => baseurl()."style.css",
 357         );
 358         my @buttons=("Save Preferences", "Logout", "Cancel");
 359
 360         my $user_name=$session->param("name");
 361         $form->field(name => "do", type => "hidden");
 362         $form->field(name => "name", disabled => 1,
 363                 value => $user_name, force => 1);
 364         $form->field(name => "password", type => "password");
 365         $form->field(name => "confirm_password", type => "password");
 366         $form->field(name => "subscriptions", size => 50,
 367                 comment => "(".htmllink("", "", "PageSpec", 1).")");
 368         $form->field(name => "locked_pages", size => 50,
 369                 comment => "(".htmllink("", "", "PageSpec", 1).")");
 370         $form->field(name => "banned_users", size => 50);
 371
 372         if (! is_admin($user_name)) {
 373                 $form->field(name => "locked_pages", type => "hidden");
 374                 $form->field(name => "banned_users", type => "hidden");
 375         }
 376
 377         if ($config{httpauth}) {
 378                 $form->field(name => "password", type => "hidden");
 379                 $form->field(name => "confirm_password", type => "hidden");
 380         }
 381
 382         if (! $form->submitted) {
 383                 $form->field(name => "email", force => 1,
 384                         value => userinfo_get($user_name, "email"));
 385                 $form->field(name => "subscriptions", force => 1,
 386                         value => userinfo_get($user_name, "subscriptions"));
 387                 $form->field(name => "locked_pages", force => 1,
 388                         value => userinfo_get($user_name, "locked_pages"));
 389                 if (is_admin($user_name)) {
 390                         $form->field(name => "banned_users", force => 1,
 391                                 value => join(" ", get_banned_users()));
 392                 }
 393         }
 394
 395         decode_form_utf8($form);
 396
 397         if ($form->submitted eq 'Logout') {
 398                 $session->delete();
 399                 redirect($q, $config{url});
 400                 return;
 401         }
 402         elsif ($form->submitted eq 'Cancel') {
 403                 redirect($q, $config{url});
 404                 return;
 405         }
 406         elsif ($form->submitted eq "Save Preferences" && $form->validate) {
 407                 foreach my $field (qw(password email subscriptions locked_pages)) {
 408                         if (length $form->field($field)) {
 409                                 userinfo_set($user_name, $field, $form->field($field)) || error("failed to set $field");
 410                         }
 411                 }
 412                 if (is_admin($user_name)) {
 413                         set_banned_users(grep { ! is_admin($_) }
 414                                         split(' ', $form->field("banned_users")));
 415                 }
 416                 $form->text("Preferences saved.");
 417         }
 418
 419         printheader($session);
 420         print misctemplate($form->title, $form->render(submit => \@buttons));
 421 } #}}}
 422
 423 sub cgi_editpage ($$) { #{{{
 424         my $q=shift;
 425         my $session=shift;
 426
 427         my @fields=qw(do rcsinfo subpage from page type editcontent comments);
 428         my @buttons=("Save Page", "Preview", "Cancel");
 429
 430         eval q{use CGI::FormBuilder; use CGI::FormBuilder::Template::HTML};
 431         error($@) if $@;
 432         my $renderer=CGI::FormBuilder::Template::HTML->new(
 433                 fields => \@fields,
 434                 template_params("editpage.tmpl"),
 435         );
 436         run_hooks(pagetemplate => sub {
 437                 shift->(page => "", destpage => "", template => $renderer->engine);
 438         });
 439         my $form = CGI::FormBuilder->new(
 440                 fields => \@fields,
 441                 header => 1,
 442                 charset => "utf-8",
 443                 method => 'POST',
 444                 validate => {
 445                         editcontent => '/.+/',
 446                 },
 447                 required => [qw{editcontent}],
 448                 javascript => 0,
 449                 params => $q,
 450                 action => $config{cgiurl},
 451                 table => 0,
 452                 template => $renderer,
 453         );
 454
 455         decode_form_utf8($form);
 456
 457         # This untaint is safe because titlepage removes any problematic
 458         # characters.
 459         my ($page)=$form->field('page');
 460         $page=titlepage(possibly_foolish_untaint($page));
 461         if (! defined $page || ! length $page ||
 462             $page=~/$config{wiki_file_prune_regexp}/ || $page=~/^\//) {
 463                 error("bad page name");
 464         }
 465
 466         my $from;
 467         if (defined $form->field('from')) {
 468                 ($from)=$form->field('from')=~/$config{wiki_file_regexp}/;
 469         }
 470
 471         my $file;
 472         my $type;
 473         if (exists $pagesources{$page}) {
 474                 $file=$pagesources{$page};
 475                 $type=pagetype($file);
 476         }
 477         else {
 478                 $type=$form->param('type');
 479                 if (defined $type && length $type && $hooks{htmlize}{$type}) {
 480                         $type=possibly_foolish_untaint($type);
 481                 }
 482                 elsif (defined $from) {
 483                         # favor the type of linking page
 484                         $type=pagetype($pagesources{$from});
 485                 }
 486                 $type=$config{default_pageext} unless defined $type;
 487                 $file=$page.".".$type;
 488         }
 489
 490         my $newfile=0;
 491         if (! -e "$config{srcdir}/$file") {
 492                 $newfile=1;
 493         }
 494
 495         $form->field(name => "do", type => 'hidden');
 496         $form->field(name => "from", type => 'hidden');
 497         $form->field(name => "rcsinfo", type => 'hidden');
 498         $form->field(name => "subpage", type => 'hidden');
 499         $form->field(name => "page", value => $page, force => 1);
 500         $form->field(name => "type", value => $type, force => 1);
 501         $form->field(name => "comments", type => "text", size => 80);
 502         $form->field(name => "editcontent", type => "textarea", rows => 20,
 503                 cols => 80);
 504         $form->tmpl_param("can_commit", $config{rcs});
 505         $form->tmpl_param("indexlink", indexlink());
 506         $form->tmpl_param("helponformattinglink",
 507                 htmllink("", "", "HelpOnFormatting", 1));
 508         $form->tmpl_param("baseurl", baseurl());
 509         if (! $form->submitted) {
 510                 $form->field(name => "rcsinfo", value => rcs_prepedit($file),
 511                         force => 1);
 512         }
 513
 514         if ($form->submitted eq "Cancel") {
 515                 if ($newfile && defined $from) {
 516                         redirect($q, "$config{url}/".htmlpage($from));
 517                 }
 518                 elsif ($newfile) {
 519                         redirect($q, $config{url});
 520                 }
 521                 else {
 522                         redirect($q, "$config{url}/".htmlpage($page));
 523                 }
 524                 return;
 525         }
 526         elsif ($form->submitted eq "Preview") {
 527                 my $content=$form->field('editcontent');
 528                 my $comments=$form->field('comments');
 529                 $form->field(name => "editcontent",
 530                                 value => $content, force => 1);
 531                 $form->field(name => "comments",
 532                                 value => $comments, force => 1);
 533                 $config{rss}=$config{atom}=0; # avoid preview writing a feed!
 534                 $form->tmpl_param("page_preview",
 535                         htmlize($page, $type,
 536                         linkify($page, "",
 537                         preprocess($page, $page,
 538                         filter($page, $content)))));
 539         }
 540         else {
 541                 $form->tmpl_param("page_preview", "");
 542         }
 543         $form->tmpl_param("page_conflict", "");
 544
 545         if (! $form->submitted || $form->submitted eq "Preview" ||
 546             ! $form->validate) {
 547                 if ($form->field("do") eq "create") {
 548                         my @page_locs;
 549                         my $best_loc;
 550                         if (! defined $from || ! length $from ||
 551                             $from ne $form->field('from') ||
 552                             $from=~/$config{wiki_file_prune_regexp}/ ||
 553                             $from=~/^\// ||
 554                             $form->submitted eq "Preview") {
 555                                 @page_locs=$best_loc=$page;
 556                         }
 557                         else {
 558                                 my $dir=$from."/";
 559                                 $dir=~s![^/]+/+$!!;
 560
 561                                 if ((defined $form->field('subpage') && length $form->field('subpage')) ||
 562                                     $page eq 'discussion') {
 563                                         $best_loc="$from/$page";
 564                                 }
 565                                 else {
 566                                         $best_loc=$dir.$page;
 567                                 }
 568
 569                                 push @page_locs, $dir.$page;
 570                                 push @page_locs, "$from/$page";
 571                                 while (length $dir) {
 572                                         $dir=~s![^/]+/+$!!;
 573                                         push @page_locs, $dir.$page;
 574                                 }
 575                         }
 576
 577                         @page_locs = grep {
 578                                 ! exists $pagecase{lc $_} &&
 579                                 ! page_locked($_, $session, 1)
 580                         } @page_locs;
 581
 582                         if (! @page_locs) {
 583                                 # hmm, someone else made the page in the
 584                                 # meantime?
 585                                 redirect($q, "$config{url}/".htmlpage($page));
 586                                 return;
 587                         }
 588
 589                         my @page_types;
 590                         if (exists $hooks{htmlize}) {
 591                                 @page_types=keys %{$hooks{htmlize}};
 592                         }
 593
 594                         $form->tmpl_param("page_select", 1);
 595                         $form->field(name => "page", type => 'select',
 596                                 options => \@page_locs, value => $best_loc);
 597                         $form->field(name => "type", type => 'select',
 598                                 options => \@page_types);
 599                         $form->title("creating ".pagetitle($page));
 600                 }
 601                 elsif ($form->field("do") eq "edit") {
 602                         page_locked($page, $session);
 603                         if (! defined $form->field('editcontent') ||
 604                             ! length $form->field('editcontent')) {
 605                                 my $content="";
 606                                 if (exists $pagesources{$page}) {
 607                                         $content=readfile(srcfile($pagesources{$page}));
 608                                         $content=~s/\n/\r\n/g;
 609                                 }
 610                                 $form->field(name => "editcontent", value => $content,
 611                                         force => 1);
 612                         }
 613                         $form->tmpl_param("page_select", 0);
 614                         $form->field(name => "page", type => 'hidden');
 615                         $form->field(name => "type", type => 'hidden');
 616                         $form->title("editing ".pagetitle($page));
 617                 }
 618
 619                 print $form->render(submit => \@buttons);
 620         }
 621         else {
 622                 # save page
 623                 page_locked($page, $session);
 624
 625                 my $content=$form->field('editcontent');
 626
 627                 $content=~s/\r\n/\n/g;
 628                 $content=~s/\r/\n/g;
 629                 writefile($file, $config{srcdir}, $content);
 630
 631                 my $message="web commit ";
 632                 if (defined $session->param("name") &&
 633                     length $session->param("name")) {
 634                         $message.="by ".$session->param("name");
 635                 }
 636                 else {
 637                         $message.="from $ENV{REMOTE_ADDR}";
 638                 }
 639                 if (defined $form->field('comments') &&
 640                     length $form->field('comments')) {
 641                         $message.=": ".$form->field('comments');
 642                 }
 643
 644                 if ($config{rcs}) {
 645                         if ($newfile) {
 646                                 rcs_add($file);
 647                         }
 648                         # prevent deadlock with post-commit hook
 649                         unlockwiki();
 650                         # presumably the commit will trigger an update
 651                         # of the wiki
 652                         my $conflict=rcs_commit($file, $message,
 653                                 $form->field("rcsinfo"));
 654
 655                         if (defined $conflict) {
 656                                 $form->field(name => "rcsinfo", value => rcs_prepedit($file),
 657                                         force => 1);
 658                                 $form->tmpl_param("page_conflict", 1);
 659                                 $form->field("editcontent", value => $conflict, force => 1);
 660                                 $form->field(name => "comments", value => $form->field('comments'), force => 1);
 661                                 $form->field("do", "edit)");
 662                                 $form->tmpl_param("page_select", 0);
 663                                 $form->field(name => "page", type => 'hidden');
 664                                 $form->field(name => "type", type => 'hidden');
 665                                 $form->title("editing $page");
 666                                 print $form->render(submit => \@buttons);
 667                                 return;
 668                         }
 669                 }
 670                 else {
 671                         require IkiWiki::Render;
 672                         refresh();
 673                         saveindex();
 674                 }
 675
 676                 # The trailing question mark tries to avoid broken
 677                 # caches and get the most recent version of the page.
 678                 redirect($q, "$config{url}/".htmlpage($page)."?updated");
 679         }
 680 } #}}}
 681
 682 sub cgi () { #{{{
 683         eval q{use CGI; use CGI::Session};
 684         error($@) if $@;
 685
 686         my $q=CGI->new;
 687
 688         run_hooks(cgi => sub { shift->($q) });
 689
 690         my $do=$q->param('do');
 691         if (! defined $do || ! length $do) {
 692                 my $error = $q->cgi_error;
 693                 if ($error) {
 694                         error("Request not processed: $error");
 695                 }
 696                 else {
 697                         error("\"do\" parameter missing");
 698                 }
 699         }
 700
 701         # Things that do not need a session.
 702         if ($do eq 'recentchanges') {
 703                 cgi_recentchanges($q);
 704                 return;
 705         }
 706         elsif ($do eq 'hyperestraier') {
 707                 cgi_hyperestraier();
 708         }
 709
 710         CGI::Session->name("ikiwiki_session_".encode_utf8($config{wikiname}));
 711
 712         my $oldmask=umask(077);
 713         my $session = CGI::Session->new("driver:DB_File", $q,
 714                 { FileName => "$config{wikistatedir}/sessions.db" });
 715         umask($oldmask);
 716
 717         # Auth hooks can sign a user in.
 718         if ($do ne 'signin' && ! defined $session->param("name")) {
 719                 run_hooks(auth => sub {
 720                         shift->($q, $session)
 721                 });
 722                 if (defined $session->param("name")) {
 723                         # Make sure whatever user was authed is in the
 724                         # userinfo db.
 725                         if (! userinfo_get($session->param("name"), "regdate")) {
 726                                 userinfo_setall($session->param("name"), {
 727                                         email => "",
 728                                         password => "",
 729                                         regdate => time,
 730                                 });
 731                         }
 732                 }
 733         }
 734
 735         # Everything below this point needs the user to be signed in.
 736         if (((! $config{anonok} || $do eq 'prefs') &&
 737              (! $config{httpauth}) &&
 738              (! defined $session->param("name") ||
 739              ! userinfo_get($session->param("name"), "regdate")))
 740             || $do eq 'signin') {
 741                 cgi_signin($q, $session);
 742
 743                 # Force session flush with safe umask.
 744                 my $oldmask=umask(077);
 745                 $session->flush;
 746                 umask($oldmask);
 747
 748                 return;
 749         }
 750
 751         if (defined $session->param("name") && userinfo_get($session->param("name"), "banned")) {
 752                 print $q->header(-status => "403 Forbidden");
 753                 $session->delete();
 754                 print "You are banned.";
 755                 exit;
 756         }
 757
 758         if ($do eq 'create' || $do eq 'edit') {
 759                 cgi_editpage($q, $session);
 760         }
 761         elsif ($do eq 'prefs') {
 762                 cgi_prefs($q, $session);
 763         }
 764         elsif ($do eq 'blog') {
 765                 my $page=titlepage(decode_utf8($q->param('title')));
 766                 # if the page already exists, munge it to be unique
 767                 my $from=$q->param('from');
 768                 my $add="";
 769                 while (exists $pagecase{lc "$from/$page$add"}) {
 770                         $add=1 unless length $add;
 771                         $add++;
 772                 }
 773                 $q->param('page', $page.$add);
 774                 # now run same as create
 775                 $q->param('do', 'create');
 776                 cgi_editpage($q, $session);
 777         }
 778         else {
 779                 error("unknown do parameter");
 780         }
 781 } #}}}
 782
 783 1