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