includes/SpecialMovepage.php

   1 <?php
   2 include_once( "LinksUpdate.php" );
   3
   4 function wfSpecialMovepage()
   5 {
   6         global $wgUser, $wgOut;
   7
   8         if ( 0 == $wgUser->getID() or $wgUser->isBlocked() ) {
   9                 $wgOut->errorpage( "movenologin", "movenologintext" );
  10                 return;
  11         }
  12         if ( wfReadOnly() ) {
  13                 $wgOut->readOnlyPage();
  14                 return;
  15         }
  16         $fields = array( "wpNewTitle", "wpOldTitle" );
  17         wfCleanFormFields( $fields );
  18
  19         $f = new MovePageForm();
  20
  21         if ( "success" == $_REQUEST['action'] ) { $f->showSuccess(); }
  22         else if ( "submit" == $_REQUEST['action'] ) { $f->doSubmit(); }
  23         else { $f->showForm( "" ); }
  24 }
  25
  26 class MovePageForm {
  27
  28         var $ot, $nt;           # Old, new Title objects
  29         var $ons, $nns;         # Namespaces
  30         var $odt, $ndt;         # Pagenames (dbkey form)
  31         var $oft, $nft;         # Full page titles (DBkey form)
  32         var $ofx, $nfx;         # Full page titles (Text form)
  33         var $oldid, $newid;     # "cur_id" field (yes, both from "cur")
  34         var $talkmoved = 0;
  35
  36         function showForm( $err )
  37         {
  38                 global $wgOut, $wgUser, $wgLang;
  39
  40                 $wgOut->setPagetitle( wfMsg( "movepage" ) );
  41
  42                 if ( ! $_REQUEST['wpOldTitle'] ) {
  43                         if ( "" == $_REQUEST['target'] ) {
  44                                 $wgOut->errorpage( "notargettitle", "notargettext" );
  45                                 return;
  46                         }
  47                         $oldTitle = htmlspecialchars( $_REQUEST['target'] );
  48                 } else {
  49                         $oldTitle = htmlspecialchars( $_REQUEST['wpOldTitle'] );
  50                 }
  51
  52                 $encOldTitle = htmlspecialchars( $oldTitle );
  53                 $encNewTitle = htmlspecialchars( $_REQUEST['wpNewTitle'] );
  54                 $ot = Title::newFromURL( $oldTitle );
  55                 $ott = $ot->getPrefixedText();
  56
  57                 $wgOut->addWikiText( wfMsg( "movepagetext" ) );
  58                 if ( ! Namespace::isTalk( $ot->getNamespace() ) )
  59                         $wgOut->addWikiText( "\n\n" . wfMsg( "movepagetalktext" ) );
  60
  61                 $ma = wfMsg( "movearticle" );
  62                 $newt = wfMsg( "newtitle" );
  63                 $mpb = wfMsg( "movepagebtn" );
  64                 $movetalk = wfMsg( "movetalk" );
  65
  66                 $titleObj = Title::makeTitle( NS_SPECIAL, "Movepage" );
  67                 $action = $titleObj->escapeLocalURL( "action=submit" );
  68
  69                 if ( "" != $err ) {
  70                         $wgOut->setSubtitle( wfMsg( "formerror" ) );
  71                         $wgOut->addHTML( "<p><font color='red' size='+1'>{$err}</font>\n" );
  72                 }
  73                 $wgOut->addHTML( "<p>
  74 <form id=\"movepage\" method=\"post\" action=\"{$action}\">
  75 <table border=0><tr>
  76 <td align=right>{$ma}:</td>
  77 <td align=left><strong>{$ott}</strong></td>
  78 </tr><tr>
  79 <td align=right>{$newt}:</td>
  80 <td align=left>
  81 <input type=text size=40 name=\"wpNewTitle\" value=\"{$encNewTitle}\">
  82 <input type=hidden name=\"wpOldTitle\" value=\"{$encOldTitle}\">
  83 </td>
  84 </tr>" );
  85
  86                 if ( ! Namespace::isTalk( $ot->getNamespace() ) ) {
  87                         $wgOut->addHTML(
  88 "<tr>
  89 <td align=right>
  90 <input type=checkbox name=\"wpMovetalk\" checked value=\"1\">
  91 </td><td>{$movetalk}</td>
  92 </tr>" );
  93                 }
  94                 $wgOut->addHTML(
  95 "<tr>
  96 <td>&nbsp;</td><td align=left>
  97 <input type=submit name=\"wpMove\" value=\"{$mpb}\">
  98 </td></tr></table>
  99 </form>\n" );
 100
 101         }
 102
 103         function doSubmit()
 104         {
 105                 global $wgOut, $wgUser, $wgLang;
 106                 global $wgDeferredUpdateList, $wgMessageCache;
 107                 global  $wgUseSquid, $wgInternalServer;
 108                 $fname = "MovePageForm::doSubmit";
 109
 110                 $this->ot = Title::newFromText( $_REQUEST['wpOldTitle'] );
 111                 $this->nt = Title::newFromText( $_REQUEST['wpNewTitle'] );
 112                 if( !$this->ot or !$this->nt ) {
 113                         $this->showForm( wfMsg( "badtitletext" ) );
 114                         return;
 115                 }
 116                 $this->ons = $this->ot->getNamespace();
 117                 $this->nns = $this->nt->getNamespace();
 118                 $this->odt = wfStrencode( $this->ot->getDBkey() );
 119                 $this->ndt = wfStrencode( $this->nt->getDBkey() );
 120                 $this->oft = wfStrencode( $this->ot->getPrefixedDBkey() );
 121                 $this->nft = wfStrencode( $this->nt->getPrefixedDBkey() );
 122                 $this->ofx = $this->ot->getPrefixedText();
 123                 $this->nfx = $this->nt->getPrefixedText();
 124
 125                 $this->oldid = $this->ot->getArticleID();
 126                 $this->newid = $this->nt->getArticleID();
 127
 128                 if ( strlen( trim( $this->ndt ) ) < 1 ) {
 129                         $this->showForm( wfMsg( "articleexists" ) );
 130                         return;
 131                 }
 132                 if ( ( ! Namespace::isMovable( $this->ons ) ) ||
 133                          ( "" == $this->odt ) ||
 134                          ( "" != $this->ot->getInterwiki() ) ||
 135                          ( !$this->ot->userCanEdit() ) ||
 136                          ( !$this->oldid ) ||
 137                      ( ! Namespace::isMovable( $nns ) ) ||
 138                          ( "" == $this->ndt ) ||
 139                          ( "" != $this->nt->getInterwiki() ) ||
 140                          ( !$this->nt->userCanEdit() ) ||
 141                          ( $this->ons == NS_MEDIAWIKI && $wgMessageCache->isCacheable( $this->odt ) ) ) {
 142                         $this->showForm( wfMsg( "badarticleerror" ) );
 143                         return;
 144                 }
 145                 # The move is allowed only if (1) the target doesn't exist, or
 146                 # (2) the target is a redirect to the source, and has no history
 147                 # (so we can undo bad moves right after they're done).
 148
 149                 if ( 0 != $this->newid ) { # Target exists; check for validity
 150                         if ( ! $this->isValidTarget() ) {
 151                                 $this->showForm( wfMsg( "articleexists" ) );
 152                                 return;
 153                         }
 154                         $this->moveOverExistingRedirect();
 155                 } else { # Target didn't exist, do normal move.
 156                         $this->moveToNewTitle();
 157                 }
 158
 159                 $this->updateWatchlists();
 160
 161                 $u = new SearchUpdate( $this->oldid, $this->nt->getPrefixedDBkey() );
 162                 $u->doUpdate();
 163                 $u = new SearchUpdate( $this->newid, $this->ot->getPrefixedDBkey(), "" );
 164                 $u->doUpdate();
 165
 166                 # Squid purging
 167                 if ( $wgUseSquid ) {
 168                         /* this needs to be done after LinksUpdate */
 169                         $urlArr = Array(
 170                                 # purge new title
 171                                 $wgInternalServer.$this->nt->getLocalURL(),
 172                                 # purge old title
 173                                 $wgInternalServer.$this->ot->getLocalURL(),
 174                         );
 175                         wfPurgeSquidServers($urlArr);
 176                         # purge pages linking to new title
 177                         $u = new SquidUpdate($this->nt);
 178                         array_push( $wgDeferredUpdateList, $u );
 179                         # purge pages linking to old title
 180                         $u = new SquidUpdate($this->ot);
 181                         array_push( $wgDeferredUpdateList, $u );
 182
 183
 184                 }
 185
 186                 # Move talk page if (1) the checkbox says to, (2) the source
 187                 # and target namespaces are identical, (3) the namespaces are not
 188                 # themselves talk namespaces, and of course (4) it exists.
 189
 190                 if ( ( 1 == $_REQUEST['wpMovetalk'] ) &&
 191                          ( ! Namespace::isTalk( $this->ons ) ) &&
 192                          ( $this->ons == $this->nns ) ) {
 193
 194                         $this->ons = $this->nns = Namespace::getTalk( $this->ons );
 195                         $this->ot = Title::makeTitle( $this->ons, $this->ot->getDBkey() );
 196                         $this->nt = Title::makeTitle( $this->nns, $this->nt->getDBkey() );
 197
 198                         # odt, ndt, ofx, nfx remain the same
 199
 200                         $this->oft = wfStrencode( $this->ot->getPrefixedDBkey() );
 201                         $this->nft = wfStrencode( $this->nt->getPrefixedDBkey() );
 202
 203                         $this->oldid = $this->ot->getArticleID();
 204                         $this->newid = $this->nt->getArticleID();
 205
 206                         if ( 0 != $this->oldid ) {
 207                                 if ( 0 != $this->newid ) {
 208                                         if ( $this->isValidTarget() ) {
 209                                                 $this->moveOverExistingRedirect();
 210                                                 $this->talkmoved = 1;
 211                                         } else {
 212                                                 $this->talkmoved = 'invalid';
 213                                         }
 214                                 } else {
 215                                         $this->moveToNewTitle();
 216                                         $this->talkmoved = 1;
 217                                 }
 218                                 $u = new SearchUpdate( $this->oldid, $this->nt->getPrefixedDBkey() );
 219                                 $u->doUpdate();
 220                                 $u = new SearchUpdate( $this->newid, $this->ot->getPrefixedDBkey(), "" );
 221                                 $u->doUpdate();
 222
 223                                 # Squid purging
 224                                 if ( $wgUseSquid ) {
 225                                         /* this needs to be done after LinksUpdate */
 226                                         $urlArr = Array(
 227                                                 # purge new title
 228                                                 $nt->getInternalURL(),
 229                                                 # purge old title
 230                                                 $ot->getInternalURL(),
 231                                         );
 232                                         wfPurgeSquidServers($urlArr);
 233                                         # purge pages linking to new title
 234                                         $u = new SquidUpdate($this->nt);
 235                                         array_push( $wgDeferredUpdateList, $u );
 236                                         # purge pages linking to old title
 237                                         $u = new SquidUpdate($this->ot);
 238                                         array_push( $wgDeferredUpdateList, $u );
 239
 240
 241                                 }
 242                         }
 243                 }
 244                 $titleObj = Title::makeTitle( NS_SPECIAL, "Movepage" );
 245                 $success = $titleObj->getFullURL(
 246                   "action=success&oldtitle=" . wfUrlencode( $this->ofx ) .
 247                   "&newtitle=" . wfUrlencode( $this->nfx ) .
 248                   "&talkmoved={$this->talkmoved}" );
 249
 250                 $wgOut->redirect( $success );
 251         }
 252
 253         function showSuccess()
 254         {
 255                 global $wgOut, $wgUser;
 256
 257                 $wgOut->setPagetitle( wfMsg( "movepage" ) );
 258                 $wgOut->setSubtitle( wfMsg( "pagemovedsub" ) );
 259
 260                 $text = wfMsg( "pagemovedtext", $_REQUEST['oldtitle'], $_REQUEST['newtitle'] );
 261                 $wgOut->addWikiText( $text );
 262
 263                 if ( 1 == $_REQUEST['talkmoved'] ) {
 264                         $wgOut->addHTML( "\n<p>" . wfMsg( "talkpagemoved" ) );
 265                 } elseif( 'invalid' == $_REQUEST['talkmoved'] ) {
 266                         $wgOut->addHTML( "\n<p><strong>" . wfMsg( "talkexists" ) . "</strong>" );
 267                 } else {
 268                         $ot = Title::newFromURL( $_REQUEST['oldtitle'] );
 269                         if ( ! Namespace::isTalk( $ot->getNamespace() ) ) {
 270                                 $wgOut->addHTML( "\n<p>" . wfMsg( "talkpagenotmoved" ) );
 271                         }
 272                 }
 273         }
 274
 275         # Is the the existing target title valid?
 276
 277         function isValidTarget()
 278         {
 279                 $fname = "MovePageForm::isValidTarget";
 280
 281                 $sql = "SELECT cur_is_redirect,cur_text FROM cur " .
 282                   "WHERE cur_id={$this->newid}";
 283                 $res = wfQuery( $sql, DB_READ, $fname );
 284                 $obj = wfFetchObject( $res );
 285
 286                 if ( 0 == $obj->cur_is_redirect ) { return false; }
 287
 288                 if ( preg_match( "/\\[\\[\\s*([^\\]]*)]]/", $obj->cur_text, $m ) ) {
 289                         $rt = Title::newFromText( $m[1] );
 290                         if ( 0 != strcmp( wfStrencode( $rt->getPrefixedDBkey() ),
 291                           $this->oft ) ) {
 292                                 return false;
 293                         }
 294                 }
 295                 $sql = "SELECT old_id FROM old WHERE old_namespace={$this->nns} " .
 296                   "AND old_title='{$this->ndt}'";
 297                 $res = wfQuery( $sql, DB_READ, $fname );
 298                 if ( 0 != wfNumRows( $res ) ) { return false; }
 299
 300                 return true;
 301         }
 302
 303         # Move page to title which is presently a redirect to the source
 304         # page.  Handling link tables here is tricky.
 305
 306         function moveOverExistingRedirect()
 307         {
 308                 global $wgUser, $wgLinkCache;
 309                 $fname = "MovePageForm::moveOverExistingRedirect";
 310                 $mt = wfMsg( "movedto" );
 311
 312                 # Change the name of the target page:
 313         $now = wfTimestampNow();
 314         $won = wfInvertTimestamp( $now );
 315                 $sql = "UPDATE cur SET cur_touched='{$now}'," .
 316                   "cur_namespace={$this->nns},cur_title='{$this->ndt}' " .
 317                   "WHERE cur_id={$this->oldid}";
 318                 wfQuery( $sql, DB_WRITE, $fname );
 319                 $wgLinkCache->clearLink( $this->nft );
 320
 321                 # Repurpose the old redirect. We don't save it to history since
 322                 # by definition if we've got here it's rather uninteresting.
 323                 $sql = "UPDATE cur SET cur_touched='{$now}',cur_timestamp='{$now}',inverse_timestamp='${won}'," .
 324                   "cur_namespace={$this->ons},cur_title='{$this->odt}'," .
 325                   "cur_text='#REDIRECT [[{$this->nft}]]\n',cur_comment='" .
 326                   "{$mt} \\\"{$this->nft}\\\"',cur_user='" .  $wgUser->getID() .
 327                   "',cur_minor_edit=0,cur_counter=0,cur_restrictions=''," .
 328                   "cur_user_text='" . wfStrencode( $wgUser->getName() ) . "'," .
 329                   "cur_is_redirect=1,cur_is_new=0 WHERE cur_id={$this->newid}";
 330                 wfQuery( $sql, DB_WRITE, $fname );
 331                 $wgLinkCache->clearLink( $this->oft );
 332
 333                 # Fix the redundant names for the past revisions of the target page.
 334                 # The redirect should have no old revisions.
 335                 $sql = "UPDATE old SET " .
 336                   "old_namespace={$this->nns},old_title='{$this->ndt}' WHERE " .
 337                   "old_namespace={$this->ons} AND old_title='{$this->odt}'";
 338                 wfQuery( $sql, DB_WRITE, $fname );
 339
 340                 RecentChange::notifyMove( $now, $this->ot, $this->nt, $wgUser, $mt );
 341
 342                 # The only link from here should be the old redirect
 343
 344                 $sql = "DELETE FROM links WHERE l_from='{$this->nft}'";
 345                 wfQuery( $sql, DB_WRITE, $fname );
 346
 347                 $sql = "UPDATE links SET l_from='{$this->nft}' WHERE l_from='{$this->oft}'";
 348                 wfQuery( $sql, DB_WRITE, $fname );
 349
 350                 # Swap links.  Using MAXINT as a temp; if there's ever an article
 351                 # with id 4294967295, this will fail, but I think that's pretty safe
 352
 353                 $sql = "UPDATE links SET l_to=4294967295 WHERE l_to={$this->oldid}";
 354                 wfQuery( $sql, DB_WRITE, $fname );
 355
 356                 $sql = "UPDATE links SET l_to={$this->oldid} WHERE l_to={$this->newid}";
 357                 wfQuery( $sql, DB_WRITE, $fname );
 358
 359                 $sql = "UPDATE links SET l_to={$this->newid} WHERE l_to=4294967295";
 360                 wfQuery( $sql, DB_WRITE, $fname );
 361
 362                 # Note: the insert below must be after the updates above!
 363
 364                 $sql = "INSERT INTO links (l_from,l_to) VALUES ('{$this->oft}',{$this->oldid})";
 365                 wfQuery( $sql, DB_WRITE, $fname );
 366
 367                 $sql = "UPDATE imagelinks SET il_from='{$this->nft}' WHERE il_from='{$this->oft}'";
 368                 wfQuery( $sql, DB_WRITE, $fname );
 369         }
 370
 371         # Move page to non-existing title.
 372
 373         function moveToNewTitle()
 374         {
 375                 global $wgUser, $wgLinkCache;
 376                 $fname = "MovePageForm::moveToNewTitle";
 377                 $mt = wfMsg( "movedto" );
 378
 379                 $now = wfTimestampNow();
 380                 $won = wfInvertTimestamp( $now );
 381                 $sql = "UPDATE cur SET cur_touched='{$now}'," .
 382                   "cur_namespace={$this->nns},cur_title='{$this->ndt}' " .
 383                   "WHERE cur_id={$this->oldid}";
 384                 wfQuery( $sql, DB_WRITE, $fname );
 385                 $wgLinkCache->clearLink( $this->nft );
 386
 387                 $comment = "{$mt} \"{$this->nft}\"";
 388                 $encComment = wfStrencode( $comment );
 389                 $common = "{$this->ons},'{$this->odt}'," .
 390                   "'$encComment','" .$wgUser->getID() . "','" .
 391                   wfStrencode( $wgUser->getName() ) ."','{$now}'";
 392                 $sql = "INSERT INTO cur (cur_namespace,cur_title," .
 393                   "cur_comment,cur_user,cur_user_text,cur_timestamp,inverse_timestamp," .
 394                   "cur_touched,cur_text,cur_is_redirect,cur_is_new) " .
 395                   "VALUES ({$common},'{$won}','{$now}','#REDIRECT [[{$this->nft}]]\n',1,1)";
 396                 wfQuery( $sql, DB_WRITE, $fname );
 397                 $this->newid = wfInsertId();
 398                 $wgLinkCache->clearLink( $this->oft );
 399
 400                 $sql = "UPDATE old SET " .
 401                   "old_namespace={$this->nns},old_title='{$this->ndt}' WHERE " .
 402                   "old_namespace={$this->ons} AND old_title='{$this->odt}'";
 403                 wfQuery( $sql, DB_WRITE, $fname );
 404
 405                 RecentChange::notifyMove( $now, $this->ot, $this->nt, $wgUser, $comment );
 406                 Article::onArticleCreate( $this->nt );
 407
 408                 $sql = "UPDATE links SET l_from='{$this->nft}' WHERE l_from='{$this->oft}'";
 409                 wfQuery( $sql, DB_WRITE, $fname );
 410
 411                 $sql = "UPDATE links SET l_to={$this->newid} WHERE l_to={$this->oldid}";
 412                 wfQuery( $sql, DB_WRITE, $fname );
 413
 414                 $sql = "INSERT INTO links (l_from,l_to) VALUES ('{$this->oft}',{$this->oldid})";
 415                 wfQuery( $sql, DB_WRITE, $fname );
 416
 417                 # Non-existent target may have had broken links to it; these must
 418                 # now be removed and made into good links.
 419                 $update = new LinksUpdate( $this->oldid, $this->nft );
 420                 $update->fixBrokenLinks();
 421
 422                 $sql = "UPDATE imagelinks SET il_from='{$this->nft}' WHERE il_from='{$this->oft}'";
 423                 wfQuery( $sql, DB_WRITE, $fname );
 424         }
 425
 426         function updateWatchlists()
 427         {
 428                 $oldnamespace = $this->ons & ~1;
 429                 $newnamespace = $this->nns & ~1;
 430                 $oldtitle = $this->odt;
 431                 $newtitle = $this->ndt;
 432
 433                 if( $oldnamespace == $newnamespace and $oldtitle == $newtitle )
 434                         return;
 435
 436                 WatchedItem::duplicateEntries( $this->ot, $this->nt );
 437         }
 438
 439 }
 440 ?>