includes/SpecialMovepage.php

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