IkiWiki/Plugin/comments.pm

   1 #!/usr/bin/perl
   2 # Copyright © 2006-2008 Joey Hess <joey@ikiwiki.info>
   3 # Copyright © 2008 Simon McVittie <http://smcv.pseudorandom.co.uk/>
   4 # Licensed under the GNU GPL, version 2, or any later version published by the
   5 # Free Software Foundation
   6 package IkiWiki::Plugin::comments;
   7
   8 use warnings;
   9 use strict;
  10 use IkiWiki 3.00;
  11 use Encode;
  12
  13 use constant PREVIEW => "Preview";
  14 use constant POST_COMMENT => "Post comment";
  15 use constant CANCEL => "Cancel";
  16
  17 my $postcomment;
  18 my %commentstate;
  19
  20 sub import {
  21         hook(type => "checkconfig", id => 'comments',  call => \&checkconfig);
  22         hook(type => "getsetup", id => 'comments',  call => \&getsetup);
  23         hook(type => "preprocess", id => 'comment', call => \&preprocess,
  24                 scan => 1);
  25         hook(type => "preprocess", id => 'commentmoderation', call => \&preprocess_moderation);
  26         # here for backwards compatability with old comments
  27         hook(type => "preprocess", id => '_comment', call => \&preprocess);
  28         hook(type => "sessioncgi", id => 'comment', call => \&sessioncgi);
  29         hook(type => "htmlize", id => "_comment", call => \&htmlize);
  30         hook(type => "htmlize", id => "_comment_pending",
  31                 call => \&htmlize_pending);
  32         hook(type => "pagetemplate", id => "comments", call => \&pagetemplate);
  33         hook(type => "formbuilder_setup", id => "comments",
  34                 call => \&formbuilder_setup);
  35         # Load goto to fix up user page links for logged-in commenters
  36         IkiWiki::loadplugin("goto");
  37         IkiWiki::loadplugin("inline");
  38         IkiWiki::loadplugin("transient");
  39 }
  40
  41 sub getsetup () {
  42         return
  43                 plugin => {
  44                         safe => 1,
  45                         rebuild => 1,
  46                         section => "web",
  47                 },
  48                 comments_pagespec => {
  49                         type => 'pagespec',
  50                         example => 'blog/* and !*/Discussion',
  51                         description => 'PageSpec of pages where comments are allowed',
  52                         link => 'ikiwiki/PageSpec',
  53                         safe => 1,
  54                         rebuild => 1,
  55                 },
  56                 comments_closed_pagespec => {
  57                         type => 'pagespec',
  58                         example => 'blog/controversial or blog/flamewar',
  59                         description => 'PageSpec of pages where posting new comments is not allowed',
  60                         link => 'ikiwiki/PageSpec',
  61                         safe => 1,
  62                         rebuild => 1,
  63                 },
  64                 comments_pagename => {
  65                         type => 'string',
  66                         default => 'comment_',
  67                         description => 'Base name for comments, e.g. "comment_" for pages like "sandbox/comment_12"',
  68                         safe => 0, # manual page moving required
  69                         rebuild => undef,
  70                 },
  71                 comments_allowdirectives => {
  72                         type => 'boolean',
  73                         example => 0,
  74                         description => 'Interpret directives in comments?',
  75                         safe => 1,
  76                         rebuild => 0,
  77                 },
  78                 comments_allowauthor => {
  79                         type => 'boolean',
  80                         example => 0,
  81                         description => 'Allow anonymous commenters to set an author name?',
  82                         safe => 1,
  83                         rebuild => 0,
  84                 },
  85                 comments_commit => {
  86                         type => 'boolean',
  87                         example => 1,
  88                         description => 'commit comments to the VCS',
  89                         # old uncommitted comments are likely to cause
  90                         # confusion if this is changed
  91                         safe => 0,
  92                         rebuild => 0,
  93                 },
  94                 comments_allowformats => {
  95                         type => 'string',
  96                         default => '',
  97                         example => 'mdwn txt',
  98                         description => 'Restrict formats for comments to (no restriction if empty)',
  99                         safe => 1,
 100                         rebuild => 0,
 101                 },
 102
 103 }
 104
 105 sub checkconfig () {
 106         $config{comments_commit} = 1
 107                 unless defined $config{comments_commit};
 108         if (! $config{comments_commit}) {
 109                 $config{only_committed_changes}=0;
 110         }
 111         $config{comments_pagespec} = ''
 112                 unless defined $config{comments_pagespec};
 113         $config{comments_closed_pagespec} = ''
 114                 unless defined $config{comments_closed_pagespec};
 115         $config{comments_pagename} = 'comment_'
 116                 unless defined $config{comments_pagename};
 117         $config{comments_allowformats} = ''
 118                 unless defined $config{comments_allowformats};
 119 }
 120
 121 sub htmlize {
 122         my %params = @_;
 123         return $params{content};
 124 }
 125
 126 sub htmlize_pending {
 127         my %params = @_;
 128         return sprintf(gettext("this comment needs %s"),
 129                 '<a href="'.
 130                 IkiWiki::cgiurl(do => "commentmoderation").'">'.
 131                 gettext("moderation").'</a>');
 132 }
 133
 134 # FIXME: copied verbatim from meta
 135 sub safeurl ($) {
 136         my $url=shift;
 137         if (exists $IkiWiki::Plugin::htmlscrubber::{safe_url_regexp} &&
 138             defined $IkiWiki::Plugin::htmlscrubber::safe_url_regexp) {
 139                 return $url=~/$IkiWiki::Plugin::htmlscrubber::safe_url_regexp/;
 140         }
 141         else {
 142                 return 1;
 143         }
 144 }
 145
 146 sub isallowed ($) {
 147     my $format = shift;
 148     return ! $config{comments_allowformats} || $config{comments_allowformats} =~ /\b$format\b/;
 149 }
 150
 151 sub preprocess {
 152         my %params = @_;
 153         my $page = $params{page};
 154
 155         my $format = $params{format};
 156         if (defined $format && (! exists $IkiWiki::hooks{htmlize}{$format} ||
 157                                 ! isallowed($format))) {
 158                 error(sprintf(gettext("unsupported page format %s"), $format));
 159         }
 160
 161         my $content = $params{content};
 162         if (! defined $content) {
 163                 error(gettext("comment must have content"));
 164         }
 165         $content =~ s/\\"/"/g;
 166
 167         if (defined wantarray) {
 168                 if ($config{comments_allowdirectives}) {
 169                         $content = IkiWiki::preprocess($page, $params{destpage},
 170                                 $content);
 171                 }
 172
 173                 # no need to bother with htmlize if it's just HTML
 174                 $content = IkiWiki::htmlize($page, $params{destpage}, $format, $content)
 175                         if defined $format;
 176
 177                 IkiWiki::run_hooks(sanitize => sub {
 178                         $content = shift->(
 179                                 page => $page,
 180                                 destpage => $params{destpage},
 181                                 content => $content,
 182                         );
 183                 });
 184         }
 185         else {
 186                 IkiWiki::preprocess($page, $params{destpage}, $content, 1);
 187         }
 188
 189         # set metadata, possibly overriding [[!meta]] directives from the
 190         # comment itself
 191
 192         my $commentuser;
 193         my $commentip;
 194         my $commentauthor;
 195         my $commentauthorurl;
 196         my $commentopenid;
 197         if (defined $params{username}) {
 198                 $commentuser = $params{username};
 199
 200                 my $oiduser = eval { IkiWiki::openiduser($commentuser) };
 201
 202                 if (defined $oiduser) {
 203                         # looks like an OpenID
 204                         $commentauthorurl = $commentuser;
 205                         $commentauthor = (defined $params{nickname} && length $params{nickname}) ? $params{nickname} : $oiduser;
 206                         $commentopenid = $commentuser;
 207                 }
 208                 else {
 209                         $commentauthorurl = IkiWiki::cgiurl(
 210                                 do => 'goto',
 211                                 page => IkiWiki::userpage($commentuser)
 212                         );
 213
 214                         $commentauthor = $commentuser;
 215                 }
 216         }
 217         else {
 218                 if (defined $params{ip}) {
 219                         $commentip = $params{ip};
 220                 }
 221                 $commentauthor = gettext("Anonymous");
 222         }
 223
 224         $commentstate{$page}{commentuser} = $commentuser;
 225         $commentstate{$page}{commentopenid} = $commentopenid;
 226         $commentstate{$page}{commentip} = $commentip;
 227         $commentstate{$page}{commentauthor} = $commentauthor;
 228         $commentstate{$page}{commentauthorurl} = $commentauthorurl;
 229         $commentstate{$page}{commentauthoravatar} = $params{avatar};
 230         if (! defined $pagestate{$page}{meta}{author}) {
 231                 $pagestate{$page}{meta}{author} = $commentauthor;
 232         }
 233         if (! defined $pagestate{$page}{meta}{authorurl}) {
 234                 $pagestate{$page}{meta}{authorurl} = $commentauthorurl;
 235         }
 236
 237         if ($config{comments_allowauthor}) {
 238                 if (defined $params{claimedauthor}) {
 239                         $pagestate{$page}{meta}{author} = $params{claimedauthor};
 240                 }
 241
 242                 if (defined $params{url}) {
 243                         my $url=$params{url};
 244
 245                         eval q{use URI::Heuristic};
 246                         if (! $@) {
 247                                 $url=URI::Heuristic::uf_uristr($url);
 248                         }
 249
 250                         if (safeurl($url)) {
 251                                 $pagestate{$page}{meta}{authorurl} = $url;
 252                         }
 253                 }
 254         }
 255         else {
 256                 $pagestate{$page}{meta}{author} = $commentauthor;
 257                 $pagestate{$page}{meta}{authorurl} = $commentauthorurl;
 258         }
 259
 260         if (defined $params{subject}) {
 261                 # decode title the same way meta does
 262                 eval q{use HTML::Entities};
 263                 $pagestate{$page}{meta}{title} = decode_entities($params{subject});
 264         }
 265
 266         if ($params{page} =~ m/\/\Q$config{comments_pagename}\E\d+_/) {
 267                 $pagestate{$page}{meta}{permalink} = urlto(IkiWiki::dirname($params{page})).
 268                         "#".page_to_id($params{page});
 269         }
 270
 271         eval q{use Date::Parse};
 272         if (! $@) {
 273                 my $time = str2time($params{date});
 274                 $IkiWiki::pagectime{$page} = $time if defined $time;
 275         }
 276
 277         return $content;
 278 }
 279
 280 sub preprocess_moderation {
 281         my %params = @_;
 282
 283         $params{desc}=gettext("Comment Moderation")
 284                 unless defined $params{desc};
 285
 286         if (length $config{cgiurl}) {
 287                 return '<a href="'.
 288                         IkiWiki::cgiurl(do => 'commentmoderation').
 289                         '">'.$params{desc}.'</a>';
 290         }
 291         else {
 292                 return $params{desc};
 293         }
 294 }
 295
 296 sub sessioncgi ($$) {
 297         my $cgi=shift;
 298         my $session=shift;
 299
 300         my $do = $cgi->param('do');
 301         if ($do eq 'comment') {
 302                 editcomment($cgi, $session);
 303         }
 304         elsif ($do eq 'commentmoderation') {
 305                 commentmoderation($cgi, $session);
 306         }
 307         elsif ($do eq 'commentsignin') {
 308                 IkiWiki::cgi_signin($cgi, $session);
 309                 exit;
 310         }
 311 }
 312
 313 # Mostly cargo-culted from IkiWiki::plugin::editpage
 314 sub editcomment ($$) {
 315         my $cgi=shift;
 316         my $session=shift;
 317
 318         IkiWiki::decode_cgi_utf8($cgi);
 319
 320         eval q{use CGI::FormBuilder};
 321         error($@) if $@;
 322
 323         my @buttons = (POST_COMMENT, PREVIEW, CANCEL);
 324         my $form = CGI::FormBuilder->new(
 325                 fields => [qw{do sid page subject editcontent type author
 326                         email url subscribe anonsubscribe}],
 327                 charset => 'utf-8',
 328                 method => 'POST',
 329                 required => [qw{editcontent}],
 330                 javascript => 0,
 331                 params => $cgi,
 332                 action => IkiWiki::cgiurl(),
 333                 header => 0,
 334                 table => 0,
 335                 template => { template('editcomment.tmpl') },
 336         );
 337
 338         IkiWiki::decode_form_utf8($form);
 339         IkiWiki::run_hooks(formbuilder_setup => sub {
 340                         shift->(title => "comment", form => $form, cgi => $cgi,
 341                                 session => $session, buttons => \@buttons);
 342                 });
 343         IkiWiki::decode_form_utf8($form);
 344
 345         my $type = $form->param('type');
 346         if (defined $type && length $type && $IkiWiki::hooks{htmlize}{$type}) {
 347                 $type = IkiWiki::possibly_foolish_untaint($type);
 348         }
 349         else {
 350                 $type = $config{default_pageext};
 351         }
 352
 353
 354         my @page_types;
 355         if (exists $IkiWiki::hooks{htmlize}) {
 356                 foreach my $key (grep { !/^_/ && isallowed($_) } keys %{$IkiWiki::hooks{htmlize}}) {
 357                         push @page_types, [$key, $IkiWiki::hooks{htmlize}{$key}{longname} || $key];
 358                 }
 359         }
 360         @page_types=sort @page_types;
 361
 362         $form->field(name => 'do', type => 'hidden');
 363         $form->field(name => 'sid', type => 'hidden', value => $session->id,
 364                 force => 1);
 365         $form->field(name => 'page', type => 'hidden');
 366         $form->field(name => 'subject', type => 'text', size => 72);
 367         $form->field(name => 'editcontent', type => 'textarea', rows => 10);
 368         $form->field(name => "type", value => $type, force => 1,
 369                 type => 'select', options => \@page_types);
 370
 371         my $username=$session->param('name');
 372         $form->tmpl_param(username => $username);
 373
 374         $form->field(name => "subscribe", type => 'hidden');
 375         $form->field(name => "anonsubscribe", type => 'hidden');
 376         if (IkiWiki::Plugin::notifyemail->can("subscribe")) {
 377                 if (defined $username) {
 378                         $form->field(name => "subscribe", type => "checkbox",
 379                                 options => [gettext("email replies to me")]);
 380                 }
 381                 elsif (IkiWiki::Plugin::passwordauth->can("anonuser")) {
 382                         $form->field(name => "anonsubscribe", type => "checkbox",
 383                                 options => [gettext("email replies to me")]);
 384                 }
 385         }
 386
 387         if ($config{comments_allowauthor} and
 388             ! defined $session->param('name')) {
 389                 $form->tmpl_param(allowauthor => 1);
 390                 $form->field(name => 'author', type => 'text', size => '40');
 391                 $form->field(name => 'email', type => 'text', size => '40');
 392                 $form->field(name => 'url', type => 'text', size => '40');
 393         }
 394         else {
 395                 $form->tmpl_param(allowauthor => 0);
 396                 $form->field(name => 'author', type => 'hidden', value => '',
 397                         force => 1);
 398                 $form->field(name => 'email', type => 'hidden', value => '',
 399                         force => 1);
 400                 $form->field(name => 'url', type => 'hidden', value => '',
 401                         force => 1);
 402         }
 403
 404         if (! defined $session->param('name')) {
 405                 # Make signinurl work and return here.
 406                 $form->tmpl_param(signinurl => IkiWiki::cgiurl(do => 'commentsignin'));
 407                 $session->param(postsignin => $ENV{QUERY_STRING});
 408                 IkiWiki::cgi_savesession($session);
 409         }
 410
 411         # The untaint is OK (as in editpage) because we're about to pass
 412         # it to file_pruned and wiki_file_regexp anyway.
 413         my ($page) = $form->field('page')=~/$config{wiki_file_regexp}/;
 414         $page = IkiWiki::possibly_foolish_untaint($page);
 415         if (! defined $page || ! length $page ||
 416                 IkiWiki::file_pruned($page)) {
 417                 error(gettext("bad page name"));
 418         }
 419
 420         $form->title(sprintf(gettext("commenting on %s"),
 421                         IkiWiki::pagetitle(IkiWiki::basename($page))));
 422
 423         $form->tmpl_param('helponformattinglink',
 424                 htmllink($page, $page, 'ikiwiki/formatting',
 425                         noimageinline => 1,
 426                         linktext => 'FormattingHelp'),
 427                         allowdirectives => $config{allow_directives});
 428
 429         if ($form->submitted eq CANCEL) {
 430                 # bounce back to the page they wanted to comment on, and exit.
 431                 IkiWiki::redirect($cgi, urlto($page));
 432                 exit;
 433         }
 434
 435         if (not exists $pagesources{$page}) {
 436                 error(sprintf(gettext(
 437                         "page '%s' doesn't exist, so you can't comment"),
 438                         $page));
 439         }
 440
 441         # There's no UI to get here, but someone might construct the URL,
 442         # leading to a comment that exists in the repository but isn't
 443         # shown
 444         if (!pagespec_match($page, $config{comments_pagespec},
 445                 location => $page)) {
 446                 error(sprintf(gettext(
 447                         "comments on page '%s' are not allowed"),
 448                         $page));
 449         }
 450
 451         if (pagespec_match($page, $config{comments_closed_pagespec},
 452                 location => $page)) {
 453                 error(sprintf(gettext(
 454                         "comments on page '%s' are closed"),
 455                         $page));
 456         }
 457
 458         # Set a flag to indicate that we're posting a comment,
 459         # so that postcomment() can tell it should match.
 460         $postcomment=1;
 461         IkiWiki::check_canedit($page, $cgi, $session);
 462         $postcomment=0;
 463
 464         my $content = "[[!comment format=$type\n";
 465
 466         if (defined $session->param('name')) {
 467                 my $username = $session->param('name');
 468                 $username =~ s/"/&quot;/g;
 469                 $content .= " username=\"$username\"\n";
 470         }
 471
 472         if (defined $session->param('nickname')) {
 473                 my $nickname = $session->param('nickname');
 474                 $nickname =~ s/"/&quot;/g;
 475                 $content .= " nickname=\"$nickname\"\n";
 476         }
 477
 478         if (!(defined $session->param('name') || defined $session->param('nickname')) &&
 479                 defined $session->remote_addr()) {
 480                 $content .= " ip=\"".$session->remote_addr()."\"\n";
 481         }
 482
 483         if ($config{comments_allowauthor}) {
 484                 my $author = $form->field('author');
 485                 if (defined $author && length $author) {
 486                         $author =~ s/"/&quot;/g;
 487                         $content .= " claimedauthor=\"$author\"\n";
 488                 }
 489                 my $url = $form->field('url');
 490                 if (defined $url && length $url) {
 491                         $url =~ s/"/&quot;/g;
 492                         $content .= " url=\"$url\"\n";
 493                 }
 494         }
 495
 496         my $avatar=getavatar($session->param('name'));
 497         if (defined $avatar && length $avatar) {
 498                 $avatar =~ s/"/&quot;/g;
 499                 $content .= " avatar=\"$avatar\"\n";
 500         }
 501
 502         my $subject = $form->field('subject');
 503         if (defined $subject && length $subject) {
 504                 $subject =~ s/"/&quot;/g;
 505         }
 506         else {
 507                 $subject = "comment ".(num_comments($page, $config{srcdir}) + 1);
 508         }
 509         $content .= " subject=\"$subject\"\n";
 510         $content .= " " . commentdate() . "\n";
 511
 512         my $editcontent = $form->field('editcontent');
 513         $editcontent="" if ! defined $editcontent;
 514         $editcontent =~ s/\r\n/\n/g;
 515         $editcontent =~ s/\r/\n/g;
 516         $editcontent =~ s/"/\\"/g;
 517         $content .= " content=\"\"\"\n$editcontent\n\"\"\"]]\n";
 518
 519         my $location=unique_comment_location($page, $content, $config{srcdir});
 520
 521         # This is essentially a simplified version of editpage:
 522         # - the user does not control the page that's created, only the parent
 523         # - it's always a create operation, never an edit
 524         # - this means that conflicts should never happen
 525         # - this means that if they do, rocks fall and everyone dies
 526
 527         if ($form->submitted eq PREVIEW) {
 528                 my $preview=previewcomment($content, $location, $page, time);
 529                 IkiWiki::run_hooks(format => sub {
 530                         $preview = shift->(page => $page,
 531                                 content => $preview);
 532                 });
 533                 $form->tmpl_param(page_preview => $preview);
 534         }
 535         else {
 536                 $form->tmpl_param(page_preview => "");
 537         }
 538
 539         if ($form->submitted eq POST_COMMENT && $form->validate) {
 540                 IkiWiki::checksessionexpiry($cgi, $session);
 541
 542                 if (IkiWiki::Plugin::notifyemail->can("subscribe")) {
 543                         my $subspec="comment($page)";
 544                         if (defined $username &&
 545                             length $form->field("subscribe")) {
 546                                 IkiWiki::Plugin::notifyemail::subscribe(
 547                                         $username, $subspec);
 548                         }
 549                         elsif (length $form->field("email") &&
 550                                length $form->field("anonsubscribe")) {
 551                                 IkiWiki::Plugin::notifyemail::anonsubscribe(
 552                                         $form->field("email"), $subspec);
 553                         }
 554                 }
 555
 556                 $postcomment=1;
 557                 my $ok=IkiWiki::check_content(content => $form->field('editcontent'),
 558                         subject => $form->field('subject'),
 559                         $config{comments_allowauthor} ? (
 560                                 author => $form->field('author'),
 561                                 url => $form->field('url'),
 562                         ) : (),
 563                         page => $location,
 564                         cgi => $cgi,
 565                         session => $session,
 566                         nonfatal => 1,
 567                 );
 568                 $postcomment=0;
 569
 570                 if (! $ok) {
 571                         $location=unique_comment_location($page, $content, $IkiWiki::Plugin::transient::transientdir, "._comment_pending");
 572                         writefile("$location._comment_pending", $IkiWiki::Plugin::transient::transientdir, $content);
 573
 574                         # Refresh so anything that deals with pending
 575                         # comments can be updated.
 576                         require IkiWiki::Render;
 577                         IkiWiki::refresh();
 578                         IkiWiki::saveindex();
 579
 580                         IkiWiki::printheader($session);
 581                         print IkiWiki::cgitemplate($cgi, gettext(gettext("comment stored for moderation")),
 582                                 "<p>".
 583                                 gettext("Your comment will be posted after moderator review").
 584                                 "</p>");
 585                         exit;
 586                 }
 587
 588                 # FIXME: could probably do some sort of graceful retry
 589                 # on error? Would require significant unwinding though
 590                 my $file = "$location._comment";
 591                 writefile($file, $config{srcdir}, $content);
 592
 593                 my $conflict;
 594
 595                 if ($config{rcs} and $config{comments_commit}) {
 596                         my $message = gettext("Added a comment");
 597                         if (defined $form->field('subject') &&
 598                                 length $form->field('subject')) {
 599                                 $message = sprintf(
 600                                         gettext("Added a comment: %s"),
 601                                         $form->field('subject'));
 602                         }
 603
 604                         IkiWiki::rcs_add($file);
 605                         IkiWiki::disable_commit_hook();
 606                         $conflict = IkiWiki::rcs_commit_staged(
 607                                 message => $message,
 608                                 session => $session,
 609                         );
 610                         IkiWiki::enable_commit_hook();
 611                         IkiWiki::rcs_update();
 612                 }
 613
 614                 # Now we need a refresh
 615                 require IkiWiki::Render;
 616                 IkiWiki::refresh();
 617                 IkiWiki::saveindex();
 618
 619                 # this should never happen, unless a committer deliberately
 620                 # breaks it or something
 621                 error($conflict) if defined $conflict;
 622
 623                 # Jump to the new comment on the page.
 624                 # The trailing question mark tries to avoid broken
 625                 # caches and get the most recent version of the page.
 626                 IkiWiki::redirect($cgi, urlto($page).
 627                         "?updated#".page_to_id($location));
 628
 629         }
 630         else {
 631                 IkiWiki::showform($form, \@buttons, $session, $cgi,
 632                         page => $page);
 633         }
 634
 635         exit;
 636 }
 637
 638 sub commentdate () {
 639         "date=\"" . strftime_utf8('%Y-%m-%dT%H:%M:%SZ', gmtime) . "\"";
 640 }
 641
 642 sub getavatar ($) {
 643         my $user=shift;
 644         return undef unless defined $user;
 645
 646         my $avatar;
 647         eval q{use Libravatar::URL};
 648         if (! $@) {
 649                 my $oiduser = eval { IkiWiki::openiduser($user) };
 650                 my $https=defined $config{url} && $config{url}=~/^https:/;
 651
 652                 if (defined $oiduser) {
 653                         eval {
 654                                 $avatar = libravatar_url(openid => $user, https => $https);
 655                         }
 656                 }
 657                 if (! defined $avatar &&
 658                     (my $email = IkiWiki::userinfo_get($user, 'email'))) {
 659                         eval {
 660                                 $avatar = libravatar_url(email => $email, https => $https);
 661                         }
 662                 }
 663         }
 664         return $avatar;
 665 }
 666
 667
 668 sub commentmoderation ($$) {
 669         my $cgi=shift;
 670         my $session=shift;
 671
 672         IkiWiki::needsignin($cgi, $session);
 673         if (! IkiWiki::is_admin($session->param("name"))) {
 674                 error(gettext("you are not logged in as an admin"));
 675         }
 676
 677         IkiWiki::decode_cgi_utf8($cgi);
 678
 679         if (defined $cgi->param('sid')) {
 680                 IkiWiki::checksessionexpiry($cgi, $session);
 681
 682                 my $rejectalldefer=$cgi->param('rejectalldefer');
 683
 684                 my %vars=$cgi->Vars;
 685                 my $added=0;
 686                 foreach my $id (keys %vars) {
 687                         if ($id =~ /(.*)\._comment(?:_pending)?$/) {
 688                                 $id=decode_utf8($id);
 689                                 my $action=$cgi->param($id);
 690                                 next if $action eq 'Defer' && ! $rejectalldefer;
 691
 692                                 # Make sure that the id is of a legal
 693                                 # pending comment.
 694                                 my ($f) = $id =~ /$config{wiki_file_regexp}/;
 695                                 if (! defined $f || ! length $f ||
 696                                     IkiWiki::file_pruned($f)) {
 697                                         error("illegal file");
 698                                 }
 699
 700                                 my $page=IkiWiki::dirname($f);
 701                                 my $filedir=$IkiWiki::Plugin::transient::transientdir;
 702                                 my $file="$filedir/$f";
 703                                 if (! -e $file) {
 704                                         # old location
 705                                         $file="$config{srcdir}/$f";
 706                                         $filedir=$config{srcdir};
 707                                         if (! -e $file) {
 708                                                 # older location
 709                                                 $file="$config{wikistatedir}/comments_pending/".$f;
 710                                                 $filedir="$config{wikistatedir}/comments_pending";
 711                                         }
 712                                 }
 713
 714                                 if ($action eq 'Accept') {
 715                                         my $content=eval { readfile($file) };
 716                                         next if $@; # file vanished since form was displayed
 717                                         my $dest=unique_comment_location($page, $content, $config{srcdir})."._comment";
 718                                         writefile($dest, $config{srcdir}, $content);
 719                                         if ($config{rcs} and $config{comments_commit}) {
 720                                                 IkiWiki::rcs_add($dest);
 721                                         }
 722                                         $added++;
 723                                 }
 724
 725                                 require IkiWiki::Render;
 726                                 IkiWiki::prune($file, $filedir);
 727                         }
 728                 }
 729
 730                 if ($added) {
 731                         my $conflict;
 732                         if ($config{rcs} and $config{comments_commit}) {
 733                                 my $message = gettext("Comment moderation");
 734                                 IkiWiki::disable_commit_hook();
 735                                 $conflict=IkiWiki::rcs_commit_staged(
 736                                         message => $message,
 737                                         session => $session,
 738                                 );
 739                                 IkiWiki::enable_commit_hook();
 740                                 IkiWiki::rcs_update();
 741                         }
 742
 743                         # Now we need a refresh
 744                         require IkiWiki::Render;
 745                         IkiWiki::refresh();
 746                         IkiWiki::saveindex();
 747
 748                         error($conflict) if defined $conflict;
 749                 }
 750         }
 751
 752         my @comments=map {
 753                 my ($id, $dir, $ctime)=@{$_};
 754                 my $content=readfile("$dir/$id");
 755                 my $preview=previewcomment($content, $id,
 756                         $id, $ctime);
 757                 {
 758                         id => $id,
 759                         view => $preview,
 760                 }
 761         } sort { $b->[2] <=> $a->[2] } comments_pending();
 762
 763         my $template=template("commentmoderation.tmpl");
 764         $template->param(
 765                 sid => $session->id,
 766                 comments => \@comments,
 767                 cgiurl => IkiWiki::cgiurl(),
 768         );
 769         IkiWiki::printheader($session);
 770         my $out=$template->output;
 771         IkiWiki::run_hooks(format => sub {
 772                 $out = shift->(page => "", content => $out);
 773         });
 774         print IkiWiki::cgitemplate($cgi, gettext("comment moderation"), $out);
 775         exit;
 776 }
 777
 778 sub formbuilder_setup (@) {
 779         my %params=@_;
 780
 781         my $form=$params{form};
 782         if ($form->title eq "preferences" &&
 783             IkiWiki::is_admin($params{session}->param("name"))) {
 784                 push @{$params{buttons}}, "Comment Moderation";
 785                 if ($form->submitted && $form->submitted eq "Comment Moderation") {
 786                         commentmoderation($params{cgi}, $params{session});
 787                 }
 788         }
 789 }
 790
 791 sub comments_pending () {
 792         my @ret;
 793
 794         eval q{use File::Find};
 795         error($@) if $@;
 796         eval q{use Cwd};
 797         error($@) if $@;
 798         my $origdir=getcwd();
 799
 800         my $find_comments=sub {
 801                 my $dir=shift;
 802                 my $extension=shift;
 803                 return unless -d $dir;
 804
 805                 chdir($dir) || die "chdir $dir: $!";
 806
 807                 find({
 808                         no_chdir => 1,
 809                         wanted => sub {
 810                                 my $file=decode_utf8($_);
 811                                 $file=~s/^\.\///;
 812                                 return if ! length $file || IkiWiki::file_pruned($file)
 813                                         || -l $_ || -d _ || $file !~ /\Q$extension\E$/;
 814                                 my ($f) = $file =~ /$config{wiki_file_regexp}/; # untaint
 815                                 if (defined $f) {
 816                                         my $ctime=(stat($_))[10];
 817                                         push @ret, [$f, $dir, $ctime];
 818                                 }
 819                         }
 820                 }, ".");
 821
 822                 chdir($origdir) || die "chdir $origdir: $!";
 823         };
 824
 825         $find_comments->($IkiWiki::Plugin::transient::transientdir, "._comment_pending");
 826         # old location
 827         $find_comments->($config{srcdir}, "._comment_pending");
 828         # old location
 829         $find_comments->("$config{wikistatedir}/comments_pending/",
 830                 "._comment");
 831
 832         return @ret;
 833 }
 834
 835 sub previewcomment ($$$) {
 836         my $content=shift;
 837         my $location=shift;
 838         my $page=shift;
 839         my $time=shift;
 840
 841         # Previewing a comment should implicitly enable comment posting mode.
 842         my $oldpostcomment=$postcomment;
 843         $postcomment=1;
 844
 845         my $preview = IkiWiki::htmlize($location, $page, '_comment',
 846                         IkiWiki::linkify($location, $page,
 847                         IkiWiki::preprocess($location, $page,
 848                         IkiWiki::filter($location, $page, $content), 0, 1)));
 849
 850         my $template = template("comment.tmpl");
 851         $template->param(content => $preview);
 852         $template->param(ctime => displaytime($time, undef, 1));
 853         $template->param(html5 => $config{html5});
 854
 855         IkiWiki::run_hooks(pagetemplate => sub {
 856                 shift->(page => $location,
 857                         destpage => $page,
 858                         template => $template);
 859         });
 860
 861         $template->param(have_actions => 0);
 862
 863         $postcomment=$oldpostcomment;
 864
 865         return $template->output;
 866 }
 867
 868 sub commentsshown ($) {
 869         my $page=shift;
 870
 871         return pagespec_match($page, $config{comments_pagespec},
 872                 location => $page);
 873 }
 874
 875 sub commentsopen ($) {
 876         my $page = shift;
 877
 878         return length $config{cgiurl} > 0 &&
 879                (! length $config{comments_closed_pagespec} ||
 880                 ! pagespec_match($page, $config{comments_closed_pagespec},
 881                                  location => $page));
 882 }
 883
 884 sub pagetemplate (@) {
 885         my %params = @_;
 886
 887         my $page = $params{page};
 888         my $template = $params{template};
 889         my $shown = ($template->query(name => 'commentslink') ||
 890                      $template->query(name => 'commentsurl') ||
 891                      $template->query(name => 'atomcommentsurl') ||
 892                      $template->query(name => 'comments')) &&
 893                     commentsshown($page);
 894
 895         if ($template->query(name => 'comments')) {
 896                 my $comments = undef;
 897                 if ($shown) {
 898                         $comments = IkiWiki::preprocess_inline(
 899                                 pages => "comment($page) and !comment($page/*)",
 900                                 template => 'comment',
 901                                 show => 0,
 902                                 reverse => 'yes',
 903                                 page => $page,
 904                                 destpage => $params{destpage},
 905                                 feedfile => 'comments',
 906                                 emptyfeeds => 'no',
 907                         );
 908                 }
 909
 910                 if (defined $comments && length $comments) {
 911                         $template->param(comments => $comments);
 912                 }
 913
 914                 if ($shown && commentsopen($page)) {
 915                         $template->param(addcommenturl => addcommenturl($page));
 916                 }
 917         }
 918
 919         if ($shown) {
 920                 if ($template->query(name => 'commentsurl')) {
 921                         $template->param(commentsurl =>
 922                                 urlto($page).'#comments');
 923                 }
 924
 925                 if ($template->query(name => 'atomcommentsurl') && $config{usedirs}) {
 926                         # This will 404 until there are some comments, but I
 927                         # think that's probably OK...
 928                         $template->param(atomcommentsurl =>
 929                                 urlto($page).'comments.atom');
 930                 }
 931
 932                 if ($template->query(name => 'commentslink')) {
 933                         my $num=num_comments($page, $config{srcdir});
 934                         my $link;
 935                         if ($num > 0) {
 936                                 $link = htmllink($page, $params{destpage}, $page,
 937                                         linktext => sprintf(ngettext("%i comment", "%i comments", $num), $num),
 938                                         anchor => "comments",
 939                                         noimageinline => 1
 940                                 );
 941                         }
 942                         elsif (commentsopen($page)) {
 943                                 $link = "<a href=\"".addcommenturl($page)."\">".
 944                                         #translators: Here "Comment" is a verb;
 945                                         #translators: the user clicks on it to
 946                                         #translators: post a comment.
 947                                         gettext("Comment").
 948                                         "</a>";
 949                         }
 950                         $template->param(commentslink => $link)
 951                                 if defined $link;
 952                 }
 953         }
 954
 955         # everything below this point is only relevant to the comments
 956         # themselves
 957         if (!exists $commentstate{$page}) {
 958                 return;
 959         }
 960
 961         if ($template->query(name => 'commentid')) {
 962                 $template->param(commentid => page_to_id($page));
 963         }
 964
 965         if ($template->query(name => 'commentuser')) {
 966                 $template->param(commentuser =>
 967                         $commentstate{$page}{commentuser});
 968         }
 969
 970         if ($template->query(name => 'commentopenid')) {
 971                 $template->param(commentopenid =>
 972                         $commentstate{$page}{commentopenid});
 973         }
 974
 975         if ($template->query(name => 'commentip')) {
 976                 $template->param(commentip =>
 977                         $commentstate{$page}{commentip});
 978         }
 979
 980         if ($template->query(name => 'commentauthor')) {
 981                 $template->param(commentauthor =>
 982                         $commentstate{$page}{commentauthor});
 983         }
 984
 985         if ($template->query(name => 'commentauthorurl')) {
 986                 $template->param(commentauthorurl =>
 987                         $commentstate{$page}{commentauthorurl});
 988         }
 989
 990         if ($template->query(name => 'commentauthoravatar')) {
 991                 $template->param(commentauthoravatar =>
 992                         $commentstate{$page}{commentauthoravatar});
 993         }
 994
 995         if ($template->query(name => 'removeurl') &&
 996             IkiWiki::Plugin::remove->can("check_canremove") &&
 997             length $config{cgiurl}) {
 998                 $template->param(removeurl => IkiWiki::cgiurl(do => 'remove',
 999                         page => $page));
1000                 $template->param(have_actions => 1);
1001         }
1002 }
1003
1004 sub addcommenturl ($) {
1005         my $page=shift;
1006
1007         return IkiWiki::cgiurl(do => 'comment', page => $page);
1008 }
1009
1010 sub num_comments ($$) {
1011         my $page=shift;
1012         my $dir=shift;
1013
1014         my @comments=glob("$dir/$page/$config{comments_pagename}*._comment");
1015         return int @comments;
1016 }
1017
1018 sub unique_comment_location ($$$;$) {
1019         my $page=shift;
1020         eval q{use Digest::MD5 'md5_hex'};
1021         error($@) if $@;
1022         my $content_md5=md5_hex(Encode::encode_utf8(shift));
1023         my $dir=shift;
1024         my $ext=shift || "._comment";
1025
1026         my $location;
1027         my $i = num_comments($page, $dir);
1028         do {
1029                 $i++;
1030                 $location = "$page/$config{comments_pagename}${i}_${content_md5}";
1031         } while (-e "$dir/$location$ext");
1032
1033         return $location;
1034 }
1035
1036 sub page_to_id ($) {
1037         # Converts a comment page name into a unique, legal html id
1038         # attribute value, that can be used as an anchor to link to the
1039         # comment.
1040         my $page=shift;
1041
1042         eval q{use Digest::MD5 'md5_hex'};
1043         error($@) if $@;
1044
1045         return "comment-".md5_hex(Encode::encode_utf8(($page)));
1046 }
1047
1048 package IkiWiki::PageSpec;
1049
1050 sub match_postcomment ($$;@) {
1051         my $page = shift;
1052         my $glob = shift;
1053
1054         if (! $postcomment) {
1055                 return IkiWiki::FailReason->new("not posting a comment");
1056         }
1057         return match_glob($page, $glob, @_);
1058 }
1059
1060 sub match_comment ($$;@) {
1061         my $page = shift;
1062         my $glob = shift;
1063
1064         if (! $postcomment) {
1065                 # To see if it's a comment, check the source file type.
1066                 # Deal with comments that were just deleted.
1067                 my $source=exists $IkiWiki::pagesources{$page} ?
1068                         $IkiWiki::pagesources{$page} :
1069                         $IkiWiki::delpagesources{$page};
1070                 my $type=defined $source ? IkiWiki::pagetype($source) : undef;
1071                 if (! defined $type || $type ne "_comment") {
1072                         return IkiWiki::FailReason->new("$page is not a comment");
1073                 }
1074         }
1075
1076         return match_glob($page, "$glob/*", internal => 1, @_);
1077 }
1078
1079 sub match_comment_pending ($$;@) {
1080         my $page = shift;
1081         my $glob = shift;
1082
1083         my $source=exists $IkiWiki::pagesources{$page} ?
1084                 $IkiWiki::pagesources{$page} :
1085                 $IkiWiki::delpagesources{$page};
1086         my $type=defined $source ? IkiWiki::pagetype($source) : undef;
1087         if (! defined $type || $type ne "_comment_pending") {
1088                 return IkiWiki::FailReason->new("$page is not a pending comment");
1089         }
1090
1091         return match_glob($page, "$glob/*", internal => 1, @_);
1092 }
1093
1094 1