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