includes/EditPage.php

   1 <?php
   2
   3 # Splitting edit page/HTML interface from Article...
   4 # The actual database and text munging is still in Article,
   5 # but it should get easier to call those from alternate
   6 # interfaces.
   7
   8 class EditPage {
   9         var $mArticle;
  10         var $mTitle;
  11
  12         # Form values
  13         var $save = false, $preview = false;
  14         var $minoredit = false, $watchthis = false;
  15         var $textbox1 = "", $textbox2 = "", $summary = "";
  16         var $edittime = "", $section = "";
  17         var $oldid = 0;
  18
  19         function EditPage( $article ) {
  20                 $this->mArticle =& $article;
  21                 global $wgTitle;
  22                 $this->mTitle =& $wgTitle;
  23         }
  24
  25         # This is the function that gets called for "action=edit".
  26
  27         function edit()
  28         {
  29                 global $wgOut, $wgUser, $wgWhitelistEdit, $wgRequest;
  30                 // this is not an article
  31                 $wgOut->setArticleFlag(false);
  32
  33                 $this->importFormData( $wgRequest );
  34
  35                 if ( ! $this->mTitle->userCanEdit() ) {
  36                         $wgOut->readOnlyPage( $this->mArticle->getContent( true ), true );
  37                         return;
  38                 }
  39                 if ( $wgUser->isBlocked() ) {
  40                         $this->blockedIPpage();
  41                         return;
  42                 }
  43                 if ( !$wgUser->getID() && $wgWhitelistEdit ) {
  44                         $this->userNotLoggedInPage();
  45                         return;
  46                 }
  47                 if ( wfReadOnly() ) {
  48                         if( $this->save || $this->preview ) {
  49                                 $this->editForm( "preview" );
  50                         } else {
  51                                 $wgOut->readOnlyPage( $this->mArticle->getContent( true ) );
  52                         }
  53                         return;
  54                 }
  55                 if ( $this->save ) {
  56                         $this->editForm( "save" );
  57                 } else if ( $this->preview ) {
  58                         $this->editForm( "preview" );
  59                 } else { # First time through
  60                         $this->editForm( "initial" );
  61                 }
  62         }
  63
  64         function importFormData( &$request ) {
  65                 # These fields need to be checked for encoding.
  66                 # Also remove trailing whitespace, but don't remove _initial_
  67                 # whitespace from the text boxes. This may be significant formatting.
  68                 $this->textbox1 = rtrim( $request->getText( "wpTextbox1" ) );
  69                 $this->textbox2 = rtrim( $request->getText( "wpTextbox2" ) );
  70                 $this->summary = trim( $request->getText( "wpSummary" ) );
  71
  72                 $this->edittime = $request->getVal( 'wpEdittime' );
  73                 if( !preg_match( '/^\d{14}$/', $this->edittime ) ) $this->edittime = "";
  74
  75                 $this->preview = $request->getCheck( 'wpPreview' );
  76                 $this->save = $request->wasPosted() && !$this->preview;
  77                 $this->minoredit = $request->getCheck( 'wpMinoredit' );
  78                 $this->watchthis = $request->getCheck( 'wpWatchthis' );
  79
  80                 $this->oldid = $request->getInt( 'oldid' );
  81
  82                 # Section edit can come from either the form or a link
  83                 $this->section = $request->getVal( 'wpSection', $request->getVal( 'section' ) );
  84         }
  85
  86         # Since there is only one text field on the edit form,
  87         # pressing <enter> will cause the form to be submitted, but
  88         # the submit button value won't appear in the query, so we
  89         # Fake it here before going back to edit().  This is kind of
  90         # ugly, but it helps some old URLs to still work.
  91
  92         function submit()
  93         {
  94                 if( !$this->preview ) $this->save = true;
  95
  96                 $this->edit();
  97         }
  98
  99         # The edit form is self-submitting, so that when things like
 100         # preview and edit conflicts occur, we get the same form back
 101         # with the extra stuff added.  Only when the final submission
 102         # is made and all is well do we actually save and redirect to
 103         # the newly-edited page.
 104
 105         function editForm( $formtype )
 106         {
 107                 global $wgOut, $wgUser;
 108                 global $wgLang, $wgParser, $wgTitle;
 109             global $wgAllowAnonymousMinor;
 110             global $wgWhitelistEdit;
 111                 global $wgSpamRegex;
 112
 113                 $sk = $wgUser->getSkin();
 114                 $isConflict = false;
 115
 116                 if(!$this->mTitle->getArticleID()) { # new article
 117                         $wgOut->addWikiText(wfmsg("newarticletext"));
 118                 }
 119
 120                 if( Namespace::isTalk( $this->mTitle->getNamespace() ) ) {
 121                         $wgOut->addWikiText(wfmsg("talkpagetext"));
 122                 }
 123
 124                 # Attempt submission here.  This will check for edit conflicts,
 125                 # and redundantly check for locked database, blocked IPs, etc.
 126                 # that edit() already checked just in case someone tries to sneak
 127                 # in the back door with a hand-edited submission URL.
 128
 129                 if ( "save" == $formtype ) {
 130                         # Check for spam
 131                         if ( $wgSpamRegex && preg_match( $wgSpamRegex, $wpTextbox1 ) ) {
 132                                         sleep(10);
 133                                         $wgOut->redirect( $this->mTitle->getFullURL() );
 134                                         return;
 135                         }
 136                         if ( $wgUser->isBlocked() ) {
 137                                 $this->blockedIPpage();
 138                                 return;
 139                         }
 140                         if ( !$wgUser->getID() && $wgWhitelistEdit ) {
 141                                 $this->userNotLoggedInPage();
 142                                 return;
 143                         }
 144                         if ( wfReadOnly() ) {
 145                                 $wgOut->readOnlyPage();
 146                                 return;
 147                         }
 148
 149                         # If article is new, insert it.
 150                         $aid = $this->mTitle->getArticleID();
 151                         if ( 0 == $aid ) {
 152                                 # Don't save a new article if it's blank.
 153                                 if ( ( "" == $this->textbox1 ) ||
 154                                   ( wfMsg( "newarticletext" ) == $this->textbox1 ) ) {
 155                                         $wgOut->redirect( $this->mTitle->getFullURL() );
 156                                         return;
 157                                 }
 158                                 $this->mArticle->insertNewArticle( $this->textbox1, $this->summary, $this->minoredit, $this->watchthis );
 159                                 return;
 160                         }
 161
 162                         # Article exists. Check for edit conflict.
 163
 164                         $this->mArticle->clear(); # Force reload of dates, etc.
 165
 166                         if( ( $this->section != "new" ) &&
 167                                 ($this->mArticle->getTimestamp() != $this->edittime ) ) {
 168                                 $isConflict = true;
 169                         }
 170                         $userid = $wgUser->getID();
 171
 172                         $text = $this->mArticle->getTextOfLastEditWithSectionReplacedOrAdded(
 173                                 $this->section, $this->textbox1, $this->summary);
 174                         # Suppress edit conflict with self
 175
 176                         if ( ( 0 != $userid ) && ( $this->mArticle->getUser() == $userid ) ) {
 177                                 $isConflict = false;
 178                         } else {
 179                                 # switch from section editing to normal editing in edit conflict
 180                                 if($isConflict) {
 181                     # Attempt merge
 182                                         if( $this->mergeChangesInto( $text ) ){
 183                                                 // Successful merge! Maybe we should tell the user the good news?
 184                                                 $isConflict = false;
 185                                         } else {
 186                                                 $this->section = "";
 187                                                 $this->textbox1 = $text;
 188                                         }
 189                                 }
 190                         }
 191                         if ( ! $isConflict ) {
 192                                 # All's well: update the article here
 193                                 if($this->mArticle->updateArticle( $text, $this->summary, $this->minoredit, $this->watchthis ))
 194                                         return;
 195                                 else
 196                                         $isConflict = true;
 197                         }
 198                 }
 199                 # First time through: get contents, set time for conflict
 200                 # checking, etc.
 201
 202                 if ( "initial" == $formtype ) {
 203                         $this->edittime = $this->mArticle->getTimestamp();
 204                         $this->textbox1 = $this->mArticle->getContent( true );
 205                         $this->summary = "";
 206                         $this->proxyCheck();
 207                 }
 208                 $wgOut->setRobotpolicy( "noindex,nofollow" );
 209
 210                 # Enabled article-related sidebar, toplinks, etc.
 211                 $wgOut->setArticleRelated( true );
 212
 213                 if ( $isConflict ) {
 214                         $s = wfMsg( "editconflict", $this->mTitle->getPrefixedText() );
 215                         $wgOut->setPageTitle( $s );
 216                         $wgOut->addHTML( wfMsg( "explainconflict" ) );
 217
 218                         $this->textbox2 = $this->textbox1;
 219                         $this->textbox1 = $this->mArticle->getContent( true );
 220                         $this->edittime = $this->mArticle->getTimestamp();
 221                 } else {
 222                         $s = wfMsg( "editing", $this->mTitle->getPrefixedText() );
 223
 224                         if( $this->section != "" ) {
 225                                 if( $this->section == "new" ) {
 226                                         $s.=wfMsg("commentedit");
 227                                 } else {
 228                                         $s.=wfMsg("sectionedit");
 229                                 }
 230                                 if(!$this->preview) {
 231                                         $sectitle=preg_match("/^=+(.*?)=+/mi",
 232                                         $this->textbox1,
 233                                         $matches);
 234                                         if( !empty( $matches[1] ) ) {
 235                                                 $this->summary = "/* ". trim($matches[1])." */ ";
 236                                         }
 237                                 }
 238                         }
 239                         $wgOut->setPageTitle( $s );
 240                         if ( $this->oldid ) {
 241                                 $this->mArticle->setOldSubtitle();
 242                                 $wgOut->addHTML( wfMsg( "editingold" ) );
 243                         }
 244                 }
 245
 246                 if( wfReadOnly() ) {
 247                         $wgOut->addHTML( "<strong>" .
 248                                 wfMsg( "readonlywarning" ) .
 249                                 "</strong>" );
 250                 }
 251                 if( $this->mTitle->isProtected() ) {
 252                         $wgOut->addHTML( "<strong>" . wfMsg( "protectedpagewarning" ) .
 253                           "</strong><br />\n" );
 254                 }
 255
 256                 $kblength = (int)(strlen( $this->textbox1 ) / 1024);
 257                 if( $kblength > 29 ) {
 258                         $wgOut->addHTML( "<strong>" .
 259                                 wfMsg( "longpagewarning", $kblength )
 260                                 . "</strong>" );
 261                 }
 262
 263                 $rows = $wgUser->getOption( "rows" );
 264                 $cols = $wgUser->getOption( "cols" );
 265
 266                 $ew = $wgUser->getOption( "editwidth" );
 267                 if ( $ew ) $ew = " style=\"width:100%\"";
 268                 else $ew = "" ;
 269
 270                 $q = "action=submit";
 271                 #if ( "no" == $redirect ) { $q .= "&redirect=no"; }
 272                 $action = $this->mTitle->escapeLocalURL( $q );
 273
 274                 $summary = wfMsg( "summary" );
 275                 $subject = wfMsg("subject");
 276                 $minor = wfMsg( "minoredit" );
 277                 $watchthis = wfMsg ("watchthis");
 278                 $save = wfMsg( "savearticle" );
 279                 $prev = wfMsg( "showpreview" );
 280
 281                 $cancel = $sk->makeKnownLink( $this->mTitle->getPrefixedURL(),
 282                   wfMsg( "cancel" ) );
 283                 $edithelpurl = $sk->makeUrl( wfMsg( "edithelppage" ));
 284                 $edithelp = '<a onclick="window.open('.
 285                 "'$edithelpurl', 'helpwindow', 'width=610,height=400,left=10,top=10'".'); return false;" href="'.$edithelpurl.'">'.
 286                 wfMsg( "edithelp" ).'</a>';
 287                 $copywarn = wfMsg( "copyrightwarning", $sk->makeKnownLink(
 288                   wfMsg( "copyrightpage" ) ) );
 289
 290                 if( $wgUser->getOption("showtoolbar") ) {
 291                         # prepare toolbar for edit buttons
 292                         $toolbar = $sk->getEditToolbar();
 293                 } else {
 294                         $toolbar = "";
 295                 }
 296
 297                 // activate checkboxes if user wants them to be always active
 298                 if( !$this->preview ) {
 299                         if( $wgUser->getOption( "watchdefault" ) ) $this->watchthis = true;
 300                         if( $wgUser->getOption( "minordefault" ) ) $this->minoredit = true;
 301
 302                         // activate checkbox also if user is already watching the page,
 303                         // require wpWatchthis to be unset so that second condition is not
 304                         // checked unnecessarily
 305                         if( !$this->watchthis && $this->mTitle->userIsWatching() ) $this->watchthis = true;
 306                 }
 307
 308                 $minoredithtml = "";
 309
 310                 if ( 0 != $wgUser->getID() || $wgAllowAnonymousMinor ) {
 311                         $minoredithtml =
 312                         "<input tabindex='3' type='checkbox' value='1' name='wpMinoredit'".($this->minoredit?" checked='checked'":"").
 313                         " accesskey='".wfMsg('accesskey-minoredit')."' id='wpMinoredit' />".
 314                         "<label for='wpMinoredit' title='".wfMsg('tooltip-minoredit')."'>{$minor}</label>";
 315                 }
 316
 317                 $watchhtml = "";
 318
 319                 if ( 0 != $wgUser->getID() ) {
 320                         $watchhtml = "<input tabindex='4' type='checkbox' name='wpWatchthis'".($this->watchthis?" checked='checked'":"").
 321                         " accesskey='".wfMsg('accesskey-watch')."' id='wpWatchthis'  />".
 322                         "<label for='wpWatchthis' title='".wfMsg('tooltip-watch')."'>{$watchthis}</label>";
 323                 }
 324
 325                 $checkboxhtml = $minoredithtml . $watchhtml . "<br />";
 326
 327                 if ( "preview" == $formtype) {
 328                         $previewhead="<h2>" . wfMsg( "preview" ) . "</h2>\n<p><large><center><font color=\"#cc0000\">" .
 329                         wfMsg( "note" ) . wfMsg( "previewnote" ) . "</font></center></large></p>\n";
 330                         if ( $isConflict ) {
 331                                 $previewhead.="<h2>" . wfMsg( "previewconflict" ) .
 332                                   "</h2>\n";
 333                         }
 334                         $previewtext = wfUnescapeHTML( $this->textbox1 );
 335
 336                         $parserOptions = ParserOptions::newFromUser( $wgUser );
 337                         $parserOptions->setUseCategoryMagic( false );
 338                         $parserOptions->setEditSection( false );
 339                         $parserOptions->setEditSectionOnRightClick( false );
 340                         $parserOutput = $wgParser->parse( $this->mArticle->preSaveTransform( $previewtext ) ."\n\n",
 341                                 $wgTitle, $parserOptions );
 342                         $previewHTML = $parserOutput->mText;
 343
 344                         if($wgUser->getOption("previewontop")) {
 345                                 $wgOut->addHTML($previewhead);
 346                                 $wgOut->addHTML($previewHTML);
 347                         }
 348                         $wgOut->addHTML( "<br clear=\"all\" />\n" );
 349                 }
 350
 351                 # if this is a comment, show a subject line at the top, which is also the edit summary.
 352                 # Otherwise, show a summary field at the bottom
 353                 $summarytext = htmlspecialchars( $wgLang->recodeForEdit( $this->summary ) ); # FIXME
 354                 if( $this->section == "new" ) {
 355                         $commentsubject="{$subject}: <input tabindex='1' type='text' value=\"$summarytext\" name=\"wpSummary\" maxlength='200' size='60' /><br />";
 356                         $editsummary = "";
 357                 } else {
 358                         $commentsubject = "";
 359                         $editsummary="{$summary}: <input tabindex='3' type='text' value=\"$summarytext\" name=\"wpSummary\" maxlength='200' size='60' /><br />";
 360                 }
 361
 362                 if( !$this->preview ) {
 363                         # Don't select the edit box on preview; this interferes with seeing what's going on.
 364                         $wgOut->setOnloadHandler( "document.editform.wpTextbox1.focus()" );
 365                 }
 366                 $wgOut->addHTML( "
 367 {$toolbar}
 368 <form id=\"editform\" name=\"editform\" method=\"post\" action=\"$action\"
 369 enctype=\"application/x-www-form-urlencoded\">
 370 {$commentsubject}
 371 <textarea tabindex='1' accesskey=\",\" name=\"wpTextbox1\" rows='{$rows}'
 372 cols='{$cols}'{$ew}>" .
 373 htmlspecialchars( $wgLang->recodeForEdit( $this->textbox1 ) ) .
 374 "
 375 </textarea>
 376 <br />{$editsummary}
 377 {$checkboxhtml}
 378 <input tabindex='5' type='submit' value=\"{$save}\" name=\"wpSave\" accesskey=\"".wfMsg('accesskey-save')."\"".
 379 " title=\"".wfMsg('tooltip-save')."\"/>
 380 <input tabindex='6' type='submit' value=\"{$prev}\" name=\"wpPreview\" accesskey=\"".wfMsg('accesskey-preview')."\"".
 381 " title=\"".wfMsg('tooltip-preview')."\"/>
 382 <em>{$cancel}</em> | <em>{$edithelp}</em>
 383 <br /><br />{$copywarn}
 384 <input type='hidden' value=\"" . htmlspecialchars( $this->section ) . "\" name=\"wpSection\" />
 385 <input type='hidden' value=\"{$this->edittime}\" name=\"wpEdittime\" />\n" );
 386
 387                 if ( $isConflict ) {
 388                         $wgOut->addHTML( "<h2>" . wfMsg( "yourdiff" ) . "</h2>\n" );
 389                         DifferenceEngine::showDiff( $this->textbox2, $this->textbox1,
 390                           wfMsg( "yourtext" ), wfMsg( "storedversion" ) );
 391
 392                         $wgOut->addHTML( "<h2>" . wfMsg( "yourtext" ) . "</h2>
 393 <textarea tabindex=6 name=\"wpTextbox2\" rows='{$rows}' cols='{$cols}' wrap='virtual'>"
 394 . htmlspecialchars( $wgLang->recodeForEdit( $this->textbox2 ) ) .
 395 "
 396 </textarea>" );
 397                 }
 398                 $wgOut->addHTML( "</form>\n" );
 399                 if($formtype =="preview" && !$wgUser->getOption("previewontop")) {
 400                         $wgOut->addHTML($previewhead);
 401                         $wgOut->addHTML($previewHTML);
 402                 }
 403
 404         }
 405
 406         function blockedIPpage()
 407         {
 408                 global $wgOut, $wgUser, $wgLang, $wgIP;
 409
 410                 $wgOut->setPageTitle( wfMsg( "blockedtitle" ) );
 411                 $wgOut->setRobotpolicy( "noindex,nofollow" );
 412                 $wgOut->setArticleRelated( false );
 413
 414                 $id = $wgUser->blockedBy();
 415                 $reason = $wgUser->blockedFor();
 416                 $ip = $wgIP;
 417
 418                 $name = User::whoIs( $id );
 419                 $link = "[[" . $wgLang->getNsText( Namespace::getUser() ) .
 420                   ":{$name}|{$name}]]";
 421
 422                 $wgOut->addWikiText( wfMsg( "blockedtext", $link, $reason, $ip, $name ) );
 423                 $wgOut->returnToMain( false );
 424         }
 425
 426
 427
 428         function userNotLoggedInPage()
 429         {
 430                 global $wgOut, $wgUser, $wgLang;
 431
 432                 $wgOut->setPageTitle( wfMsg( "whitelistedittitle" ) );
 433                 $wgOut->setRobotpolicy( "noindex,nofollow" );
 434                 $wgOut->setArticleRelated( false );
 435
 436                 $wgOut->addWikiText( wfMsg( "whitelistedittext" ) );
 437                 $wgOut->returnToMain( false );
 438         }
 439
 440         # Forks processes to scan the originating IP for an open proxy server
 441         # MemCached can be used to skip IPs that have already been scanned
 442         function proxyCheck()
 443         {
 444                 global $wgBlockOpenProxies, $wgProxyPorts, $wgProxyScriptPath;
 445                 global $wgIP, $wgUseMemCached, $wgMemc, $wgDBname, $wgProxyMemcExpiry;
 446
 447                 if ( !$wgBlockOpenProxies ) {
 448                         return;
 449                 }
 450
 451                 # Get MemCached key
 452                 $skip = false;
 453                 if ( $wgUseMemCached ) {
 454                         $mcKey = "$wgDBname:proxy:ip:$wgIP";
 455                         $mcValue = $wgMemc->get( $mcKey );
 456                         if ( $mcValue ) {
 457                                 $skip = true;
 458                         }
 459                 }
 460
 461                 # Fork the processes
 462                 if ( !$skip ) {
 463                         $title = Title::makeTitle( NS_SPECIAL, "Blockme" );
 464                         $iphash = md5( $wgIP . $wgProxyKey );
 465                         $url = $title->getFullURL( "ip=$iphash" );
 466
 467                         foreach ( $wgProxyPorts as $port ) {
 468                                 $params = implode( " ", array(
 469                                                         escapeshellarg( $wgProxyScriptPath ),
 470                                                         escapeshellarg( $wgIP ),
 471                                                         escapeshellarg( $port ),
 472                                                         escapeshellarg( $url )
 473                                                         ));
 474                                 exec( "php $params &>/dev/null &" );
 475                         }
 476                         # Set MemCached key
 477                         if ( $wgUseMemCached ) {
 478                                 $wgMemc->set( $mcKey, 1, $wgProxyMemcExpiry );
 479                         }
 480                 }
 481         }
 482
 483         /* private */ function mergeChangesInto( &$text ){
 484                 $oldDate = $this->edittime;
 485                 $res = wfQuery("SELECT cur_text FROM cur WHERE cur_id=" .
 486                         $this->mTitle->getArticleID() . " FOR UPDATE", DB_WRITE);
 487                 $obj = wfFetchObject($res);
 488
 489                 $yourtext = $obj->cur_text;
 490                 $ns = $this->mTitle->getNamespace();
 491                 $title = wfStrencode( $this->mTitle->getDBkey() );
 492                 $res = wfQuery("SELECT old_text FROM old WHERE old_namespace = $ns AND ".
 493                   "old_title = '{$title}' AND old_timestamp = '{$oldDate}'", DB_WRITE);
 494                 $obj = wfFetchObject($res);
 495                 if(wfMerge($obj->old_text, $text, $yourtext, $result)){
 496                         $text = $result;
 497                         return true;
 498                 } else {
 499                         return false;
 500                 }
 501         }
 502 }
 503
 504 ?>