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
 112                 $sk = $wgUser->getSkin();
 113                 $isConflict = false;
 114
 115                 if(!$this->mTitle->getArticleID()) { # new article
 116                         $wgOut->addWikiText(wfmsg("newarticletext"));
 117                 }
 118
 119                 if( Namespace::isTalk( $this->mTitle->getNamespace() ) ) {
 120                         $wgOut->addWikiText(wfmsg("talkpagetext"));
 121                 }
 122
 123                 # Attempt submission here.  This will check for edit conflicts,
 124                 # and redundantly check for locked database, blocked IPs, etc.
 125                 # that edit() already checked just in case someone tries to sneak
 126                 # in the back door with a hand-edited submission URL.
 127
 128                 if ( "save" == $formtype ) {
 129                         if ( $wgUser->isBlocked() ) {
 130                                 $this->blockedIPpage();
 131                                 return;
 132                         }
 133                         if ( !$wgUser->getID() && $wgWhitelistEdit ) {
 134                                 $this->userNotLoggedInPage();
 135                                 return;
 136                         }
 137                         if ( wfReadOnly() ) {
 138                                 $wgOut->readOnlyPage();
 139                                 return;
 140                         }
 141                         # If article is new, insert it.
 142
 143                         $aid = $this->mTitle->getArticleID();
 144                         if ( 0 == $aid ) {
 145                                 # Don't save a new article if it's blank.
 146                                 if ( ( "" == $this->textbox1 ) ||
 147                                   ( wfMsg( "newarticletext" ) == $this->textbox1 ) ) {
 148                                         $wgOut->redirect( $this->mTitle->getFullURL() );
 149                                         return;
 150                                 }
 151                                 $this->mArticle->insertNewArticle( $this->textbox1, $this->summary, $this->minoredit, $this->watchthis );
 152                                 return;
 153                         }
 154
 155                         # Article exists. Check for edit conflict.
 156
 157                         $this->mArticle->clear(); # Force reload of dates, etc.
 158
 159                         if( ( $this->section != "new" ) &&
 160                                 ($this->mArticle->getTimestamp() != $this->edittime ) ) {
 161                                 $isConflict = true;
 162                         }
 163                         $userid = $wgUser->getID();
 164
 165                         $text = $this->mArticle->getTextOfLastEditWithSectionReplacedOrAdded(
 166                                 $this->section, $this->textbox1, $this->summary);
 167                         # Suppress edit conflict with self
 168
 169                         if ( ( 0 != $userid ) && ( $this->mArticle->getUser() == $userid ) ) {
 170                                 $isConflict = false;
 171                         } else {
 172                                 # switch from section editing to normal editing in edit conflict
 173                                 # FIXME: This is confusing. In theory we should attempt to merge, finding
 174                                 # the equivalent section if it's unchanged and avoid the conflict.
 175                                 if($isConflict) {
 176                                         if( $this->mergeChangesInto( $text ) ){
 177                                                 // Successful merge! Maybe we should tell the user the good news?
 178                                                 $isConflict = false;
 179                                         } else {
 180                                                 $this->section = "";
 181                                                 $this->textbox1 = $text;
 182                                         }
 183                                 }
 184                         }
 185                         if ( ! $isConflict ) {
 186                                 # All's well: update the article here
 187                                 if($this->mArticle->updateArticle( $text, $this->summary, $this->minoredit, $this->watchthis ))
 188                                         return;
 189                                 else
 190                                         $isConflict = true;
 191                         }
 192                 }
 193                 # First time through: get contents, set time for conflict
 194                 # checking, etc.
 195
 196                 if ( "initial" == $formtype ) {
 197                         $this->edittime = $this->mArticle->getTimestamp();
 198                         $this->textbox1 = $this->mArticle->getContent(true);
 199                         $this->summary = "";
 200                         $this->proxyCheck();
 201                 }
 202                 $wgOut->setRobotpolicy( "noindex,nofollow" );
 203
 204                 # Enabled article-related sidebar, toplinks, etc.
 205                 $wgOut->setArticleRelated( true );
 206
 207                 if ( $isConflict ) {
 208                         $s = wfMsg( "editconflict", $this->mTitle->getPrefixedText() );
 209                         $wgOut->setPageTitle( $s );
 210                         $wgOut->addHTML( wfMsg( "explainconflict" ) );
 211
 212                         $this->textbox2 = $this->textbox1;
 213                         $this->textbox1 = $this->mArticle->getContent(true);
 214                         $this->edittime = $this->mArticle->getTimestamp();
 215                 } else {
 216                         $s = wfMsg( "editing", $this->mTitle->getPrefixedText() );
 217
 218                         if( $this->section != "" ) {
 219                                 if( $this->section == "new" ) {
 220                                         $s.=wfMsg("commentedit");
 221                                 } else {
 222                                         $s.=wfMsg("sectionedit");
 223                                 }
 224                                 if(!$this->preview) {
 225                                         $sectitle=preg_match("/^=+(.*?)=+/mi",
 226                                         $this->textbox1,
 227                                         $matches);
 228                                         if($matches[1]) { $this->summary = "(".trim($matches[1]).")"; }
 229                                 }
 230                         }
 231                         $wgOut->setPageTitle( $s );
 232                         if ( $this->oldid ) {
 233                                 $this->mArticle->setOldSubtitle();
 234                                 $wgOut->addHTML( wfMsg( "editingold" ) );
 235                         }
 236                 }
 237
 238                 if( wfReadOnly() ) {
 239                         $wgOut->addHTML( "<strong>" .
 240                                 wfMsg( "readonlywarning" ) .
 241                                 "</strong>" );
 242                 }
 243                 if( $this->mTitle->isProtected() ) {
 244                         $wgOut->addHTML( "<strong>" . wfMsg( "protectedpagewarning" ) .
 245                           "</strong><br />\n" );
 246                 }
 247
 248                 $kblength = (int)(strlen( $this->textbox1 ) / 1024);
 249                 if( $kblength > 29 ) {
 250                         $wgOut->addHTML( "<strong>" .
 251                                 wfMsg( "longpagewarning", $kblength )
 252                                 . "</strong>" );
 253                 }
 254
 255                 $rows = $wgUser->getOption( "rows" );
 256                 $cols = $wgUser->getOption( "cols" );
 257
 258                 $ew = $wgUser->getOption( "editwidth" );
 259                 if ( $ew ) $ew = " style=\"width:100%\"";
 260                 else $ew = "" ;
 261
 262                 $q = "action=submit";
 263                 #if ( "no" == $redirect ) { $q .= "&redirect=no"; }
 264                 $action = $this->mTitle->escapeLocalURL( $q );
 265
 266                 $summary = wfMsg( "summary" );
 267                 $subject = wfMsg("subject");
 268                 $minor = wfMsg( "minoredit" );
 269                 $watchthis = wfMsg ("watchthis");
 270                 $save = wfMsg( "savearticle" );
 271                 $prev = wfMsg( "showpreview" );
 272
 273                 $cancel = $sk->makeKnownLink( $this->mTitle->getPrefixedURL(),
 274                   wfMsg( "cancel" ) );
 275                 $edithelp = $sk->makeKnownLink( wfMsg( "edithelppage" ),
 276                   wfMsg( "edithelp" ) );
 277                 $copywarn = wfMsg( "copyrightwarning", $sk->makeKnownLink(
 278                   wfMsg( "copyrightpage" ) ) );
 279
 280                 if($wgUser->getOption("showtoolbar")) {
 281                         // prepare toolbar for edit buttons
 282                         $toolbar=$sk->getEditToolbar();
 283                 }
 284
 285                 // activate checkboxes if user wants them to be always active
 286                 if( !$this->preview ) {
 287                         if( $wgUser->getOption( "watchdefault" ) ) $this->watchthis = true;
 288                         if( $wgUser->getOption( "minordefault" ) ) $this->minoredit = true;
 289
 290                         // activate checkbox also if user is already watching the page,
 291                         // require wpWatchthis to be unset so that second condition is not
 292                         // checked unnecessarily
 293                         if( !$this->watchthis && $this->mTitle->userIsWatching() ) $this->watchthis = true;
 294                 }
 295
 296                 $minoredithtml = "";
 297
 298                 if ( 0 != $wgUser->getID() || $wgAllowAnonymousMinor ) {
 299                         $minoredithtml =
 300                         "<input tabindex='3' type='checkbox' value='1' name='wpMinoredit'".($this->minoredit?" checked":"")." id='wpMinoredit'>".
 301                         "<label for='wpMinoredit'>{$minor}</label>";
 302                 }
 303
 304                 $watchhtml = "";
 305
 306                 if ( 0 != $wgUser->getID() ) {
 307                         $watchhtml = "<input tabindex='4' type='checkbox' name='wpWatchthis'".($this->watchthis?" checked":"")." id='wpWatchthis'>".
 308                         "<label for='wpWatchthis'>{$watchthis}</label>";
 309                 }
 310
 311                 $checkboxhtml = $minoredithtml . $watchhtml . "<br>";
 312
 313                 if ( "preview" == $formtype) {
 314                         $previewhead="<h2>" . wfMsg( "preview" ) . "</h2>\n<p><large><center><font color=\"#cc0000\">" .
 315                         wfMsg( "note" ) . wfMsg( "previewnote" ) . "</font></center></large><p>\n";
 316                         if ( $isConflict ) {
 317                                 $previewhead.="<h2>" . wfMsg( "previewconflict" ) .
 318                                   "</h2>\n";
 319                         }
 320                         $previewtext = wfUnescapeHTML( $this->textbox1 );
 321
 322                         $parserOptions = ParserOptions::newFromUser( $wgUser );
 323                         $parserOptions->setUseCategoryMagic( false );
 324                         $parserOptions->setEditSection( false );
 325                         $parserOptions->setEditSectionOnRightClick( false );
 326                         $parserOutput = $wgParser->parse( $this->mArticle->preSaveTransform( $previewtext ) ."\n\n",
 327                                 $wgTitle, $parserOptions );
 328                         $previewHTML = $parserOutput->mText;
 329
 330                         if($wgUser->getOption("previewontop")) {
 331                                 $wgOut->addHTML($previewhead);
 332                                 $wgOut->addHTML($previewHTML);
 333                         }
 334                         $wgOut->addHTML( "<br clear=\"all\" />\n" );
 335                 }
 336
 337                 # if this is a comment, show a subject line at the top, which is also the edit summary.
 338                 # Otherwise, show a summary field at the bottom
 339                 $summarytext = htmlspecialchars( $wgLang->recodeForEdit( $this->summary ) ); # FIXME
 340                 if( $this->section == "new" ) {
 341                         $commentsubject="{$subject}: <input tabindex='1' type='text' value=\"$summarytext\" name=\"wpSummary\" maxlength='200' size='60'><br>";
 342                         $editsummary = "";
 343                 } else {
 344                         $commentsubject = "";
 345                         $editsummary="{$summary}: <input tabindex='3' type='text' value=\"$summarytext\" name=\"wpSummary\" maxlength='200' size='60'><br>";
 346                 }
 347
 348                 if( !$this->preview ) {
 349                         # Don't select the edit box on preview; this interferes with seeing what's going on.
 350                         $wgOut->setOnloadHandler( "document.editform.wpTextbox1.focus()" );
 351                 }
 352                 $wgOut->addHTML( "
 353 {$toolbar}
 354 <form id=\"editform\" name=\"editform\" method=\"post\" action=\"$action\"
 355 enctype=\"application/x-www-form-urlencoded\">
 356 {$commentsubject}
 357 <textarea tabindex='2' name=\"wpTextbox1\" rows='{$rows}'
 358 cols='{$cols}'{$ew} wrap=\"virtual\">" .
 359 htmlspecialchars( $wgLang->recodeForEdit( $this->textbox1 ) ) .
 360 "
 361 </textarea>
 362 <br>{$editsummary}
 363 {$checkboxhtml}
 364 <input tabindex='5' type='submit' value=\"{$save}\" name=\"wpSave\" accesskey=\"s\">
 365 <input tabindex='6' type='submit' value=\"{$prev}\" name=\"wpPreview\" accesskey=\"p\">
 366 <em>{$cancel}</em> | <em>{$edithelp}</em>
 367 <br><br>{$copywarn}
 368 <input type=hidden value=\"" . htmlspecialchars( $this->section ) . "\" name=\"wpSection\">
 369 <input type=hidden value=\"{$this->edittime}\" name=\"wpEdittime\">\n" );
 370
 371                 if ( $isConflict ) {
 372                         $wgOut->addHTML( "<h2>" . wfMsg( "yourdiff" ) . "</h2>\n" );
 373                         DifferenceEngine::showDiff( $this->textbox2, $this->textbox1,
 374                           wfMsg( "yourtext" ), wfMsg( "storedversion" ) );
 375
 376                         $wgOut->addHTML( "<h2>" . wfMsg( "yourtext" ) . "</h2>
 377 <textarea tabindex=6 name=\"wpTextbox2\" rows='{$rows}' cols='{$cols}' wrap='virtual'>"
 378 . htmlspecialchars( $wgLang->recodeForEdit( $this->textbox2 ) ) .
 379 "
 380 </textarea>" );
 381                 }
 382                 $wgOut->addHTML( "</form>\n" );
 383                 if($formtype =="preview" && !$wgUser->getOption("previewontop")) {
 384                         $wgOut->addHTML($previewhead);
 385                         $wgOut->addHTML($previewHTML);
 386                 }
 387
 388         }
 389
 390         function blockedIPpage()
 391         {
 392                 global $wgOut, $wgUser, $wgLang, $wgIP;
 393
 394                 $wgOut->setPageTitle( wfMsg( "blockedtitle" ) );
 395                 $wgOut->setRobotpolicy( "noindex,nofollow" );
 396                 $wgOut->setArticleRelated( false );
 397
 398                 $id = $wgUser->blockedBy();
 399                 $reason = $wgUser->blockedFor();
 400                 $ip = $wgIP;
 401
 402                 $name = User::whoIs( $id );
 403                 $link = "[[" . $wgLang->getNsText( Namespace::getUser() ) .
 404                   ":{$name}|{$name}]]";
 405
 406                 $wgOut->addWikiText( wfMsg( "blockedtext", $link, $reason, $ip ) );
 407                 $wgOut->returnToMain( false );
 408         }
 409
 410
 411
 412         function userNotLoggedInPage()
 413         {
 414                 global $wgOut, $wgUser, $wgLang;
 415
 416                 $wgOut->setPageTitle( wfMsg( "whitelistedittitle" ) );
 417                 $wgOut->setRobotpolicy( "noindex,nofollow" );
 418                 $wgOut->setArticleRelated( false );
 419
 420                 $wgOut->addWikiText( wfMsg( "whitelistedittext" ) );
 421                 $wgOut->returnToMain( false );
 422         }
 423
 424         # Forks processes to scan the originating IP for an open proxy server
 425         # MemCached can be used to skip IPs that have already been scanned
 426         function proxyCheck()
 427         {
 428                 global $wgBlockOpenProxies, $wgProxyPorts, $wgProxyScriptPath;
 429                 global $wgIP, $wgUseMemCached, $wgMemc, $wgDBname, $wgProxyMemcExpiry;
 430
 431                 if ( !$wgBlockOpenProxies ) {
 432                         return;
 433                 }
 434
 435                 # Get MemCached key
 436                 $skip = false;
 437                 if ( $wgUseMemCached ) {
 438                         $mcKey = "$wgDBname:proxy:ip:$wgIP";
 439                         $mcValue = $wgMemc->get( $mcKey );
 440                         if ( $mcValue ) {
 441                                 $skip = true;
 442                         }
 443                 }
 444
 445                 # Fork the processes
 446                 if ( !$skip ) {
 447                         $title = Title::makeTitle( NS_SPECIAL, "Blockme" );
 448                         $url = $title->getFullURL();
 449                         foreach ( $wgProxyPorts as $port ) {
 450                                 $params = implode( " ", array(
 451                                   escapeshellarg( $wgProxyScriptPath ),
 452                                   escapeshellarg( $wgIP ),
 453                                   escapeshellarg( $port ),
 454                                   escapeshellarg( $url )
 455                                 ));
 456                                 exec( "php $params &>/dev/null &" );
 457                         }
 458                         # Set MemCached key
 459                         if ( $wgUseMemCached ) {
 460                                 $wgMemc->set( $mcKey, 1, $wgProxyMemcExpiry );
 461                         }
 462                 }
 463         }
 464
 465         /* private */ function mergeChangesInto( &$text ){
 466                 $oldDate = $this->edittime;
 467                 $res = wfQuery("SELECT cur_text FROM cur WHERE cur_id=" .
 468                         $this->mTitle->getArticleID() . " FOR UPDATE", DB_WRITE);
 469                 $obj = wfFetchObject($res);
 470
 471                 $yourtext = $obj->cur_text;
 472                 $ns = $this->mTitle->getNamespace();
 473                 $title = wfStrencode( $this->mTitle->getDBkey() );
 474                 $res = wfQuery("SELECT old_text FROM old WHERE old_namespace = $ns AND ".
 475                   "old_title = '{$title}' AND old_timestamp = '{$oldDate}'", DB_WRITE);
 476                 $obj = wfFetchObject($res);
 477                 if(wfMerge($obj->old_text, $text, $yourtext, $result)){
 478                         $text = $result;
 479                         return true;
 480                 } else {
 481                         return false;
 482                 }
 483         }
 484 }
 485
 486 ?>