includes/SpecialRevisiondelete.php

   1 <?php
   2
   3 /**
   4  * Not quite ready for production use yet; need to fix up the restricted mode,
   5  * and provide for preservation across delete/undelete of the page.
   6  *
   7  * To try this out, set up extra permissions something like:
   8  * $wgGroupPermissions['sysop']['deleterevision'] = true;
   9  * $wgGroupPermissions['bureaucrat']['hiderevision'] = true;
  10  */
  11
  12 function wfSpecialRevisiondelete( $par = null ) {
  13         global $wgOut, $wgRequest;
  14
  15         $target = $wgRequest->getVal( 'target' );
  16         $oldid = $wgRequest->getIntArray( 'oldid' );
  17
  18         $page = Title::newFromUrl( $target );
  19
  20         if( is_null( $page ) ) {
  21                 $wgOut->showErrorPage( 'notargettitle', 'notargettext' );
  22                 return;
  23         }
  24
  25         if( is_null( $oldid ) ) {
  26                 $wgOut->showErrorPage( 'revdelete-nooldid-title', 'revdelete-nooldid-text' );
  27                 return;
  28         }
  29
  30         $form = new RevisionDeleteForm( $wgRequest );
  31         if( $wgRequest->wasPosted() ) {
  32                 $form->submit( $wgRequest );
  33         } else {
  34                 $form->show( $wgRequest );
  35         }
  36 }
  37
  38 /**
  39  * Implements the GUI for Revision Deletion.
  40  * @addtogroup SpecialPage
  41  */
  42 class RevisionDeleteForm {
  43         /**
  44          * @param Title $page
  45          * @param int $oldid
  46          */
  47         function __construct( $request ) {
  48                 global $wgUser;
  49
  50                 $target = $request->getVal( 'target' );
  51                 $this->page = Title::newFromUrl( $target );
  52
  53                 $this->revisions = $request->getIntArray( 'oldid', array() );
  54
  55                 $this->skin = $wgUser->getSkin();
  56                 $this->checks = array(
  57                         array( 'revdelete-hide-text', 'wpHideText', Revision::DELETED_TEXT ),
  58                         array( 'revdelete-hide-comment', 'wpHideComment', Revision::DELETED_COMMENT ),
  59                         array( 'revdelete-hide-user', 'wpHideUser', Revision::DELETED_USER ),
  60                         array( 'revdelete-hide-restricted', 'wpHideRestricted', Revision::DELETED_RESTRICTED ) );
  61         }
  62
  63         /**
  64          * @param WebRequest $request
  65          */
  66         function show( $request ) {
  67                 global $wgOut, $wgUser;
  68
  69                 $wgOut->addWikiText( wfMsg( 'revdelete-selected', $this->page->getPrefixedText() ) );
  70
  71                 $wgOut->addHtml( "<ul>" );
  72                 foreach( $this->revisions as $revid ) {
  73                         $rev = Revision::newFromTitle( $this->page, $revid );
  74                         if( !isset( $rev ) ) {
  75                                 $wgOut->showErrorPage( 'revdelete-nooldid-title', 'revdelete-nooldid-text' );
  76                                 return;
  77                         }
  78                         $wgOut->addHtml( $this->historyLine( $rev ) );
  79                         $bitfields[] = $rev->mDeleted; // FIXME
  80                 }
  81                 $wgOut->addHtml( "</ul>" );
  82
  83                 $wgOut->addWikiText( wfMsg( 'revdelete-text' ) );
  84
  85                 $items = array(
  86                         wfInputLabel( wfMsg( 'revdelete-log' ), 'wpReason', 'wpReason', 60 ),
  87                         wfSubmitButton( wfMsg( 'revdelete-submit' ) ) );
  88                 $hidden = array(
  89                         wfHidden( 'wpEditToken', $wgUser->editToken() ),
  90                         wfHidden( 'target', $this->page->getPrefixedText() ) );
  91                 foreach( $this->revisions as $revid ) {
  92                         $hidden[] = wfHidden( 'oldid[]', $revid );
  93                 }
  94
  95                 $special = SpecialPage::getTitleFor( 'Revisiondelete' );
  96                 $wgOut->addHtml( wfElement( 'form', array(
  97                         'method' => 'post',
  98                         'action' => $special->getLocalUrl( 'action=submit' ) ),
  99                         null ) );
 100
 101                 $wgOut->addHtml( '<fieldset><legend>' . wfMsgHtml( 'revdelete-legend' ) . '</legend>' );
 102                 foreach( $this->checks as $item ) {
 103                         list( $message, $name, $field ) = $item;
 104                         $wgOut->addHtml( '<div>' .
 105                                 wfCheckLabel( wfMsg( $message), $name, $name, $rev->isDeleted( $field ) ) .
 106                                 '</div>' );
 107                 }
 108                 $wgOut->addHtml( '</fieldset>' );
 109                 foreach( $items as $item ) {
 110                         $wgOut->addHtml( '<p>' . $item . '</p>' );
 111                 }
 112                 foreach( $hidden as $item ) {
 113                         $wgOut->addHtml( $item );
 114                 }
 115
 116                 $wgOut->addHtml( '</form>' );
 117         }
 118
 119         /**
 120          * @param Revision $rev
 121          * @returns string
 122          */
 123         function historyLine( $rev ) {
 124                 global $wgContLang;
 125                 $date = $wgContLang->timeanddate( $rev->getTimestamp() );
 126                 return
 127                         "<li>" .
 128                         $this->skin->makeLinkObj( $this->page, $date, 'oldid=' . $rev->getId() ) .
 129                         " " .
 130                         $this->skin->revUserLink( $rev ) .
 131                         " " .
 132                         $this->skin->revComment( $rev ) .
 133                         "</li>";
 134         }
 135
 136         /**
 137          * @param WebRequest $request
 138          */
 139         function submit( $request ) {
 140                 $bitfield = $this->extractBitfield( $request );
 141                 $comment = $request->getText( 'wpReason' );
 142                 if( $this->save( $bitfield, $comment ) ) {
 143                         return $this->success( $request );
 144                 } else {
 145                         return $this->show( $request );
 146                 }
 147         }
 148
 149         function success( $request ) {
 150                 global $wgOut;
 151                 $wgOut->addWikiText( 'woo' );
 152         }
 153
 154         /**
 155          * Put together a rev_deleted bitfield from the submitted checkboxes
 156          * @param WebRequest $request
 157          * @return int
 158          */
 159         function extractBitfield( $request ) {
 160                 $bitfield = 0;
 161                 foreach( $this->checks as $item ) {
 162                         list( /* message */ , $name, $field ) = $item;
 163                         if( $request->getCheck( $name ) ) {
 164                                 $bitfield |= $field;
 165                         }
 166                 }
 167                 return $bitfield;
 168         }
 169
 170         function save( $bitfield, $reason ) {
 171                 $dbw = wfGetDB( DB_MASTER );
 172                 $deleter = new RevisionDeleter( $dbw );
 173                 $deleter->setVisibility( $this->revisions, $bitfield, $reason );
 174         }
 175 }
 176
 177 /**
 178  * Implements the actions for Revision Deletion.
 179  * @addtogroup SpecialPage
 180  */
 181 class RevisionDeleter {
 182         function __construct( $db ) {
 183                 $this->db = $db;
 184         }
 185
 186         /**
 187          * @param array $items list of revision ID numbers
 188          * @param int $bitfield new rev_deleted value
 189          * @param string $comment Comment for log records
 190          */
 191         function setVisibility( $items, $bitfield, $comment ) {
 192                 $pages = array();
 193
 194                 // To work!
 195                 foreach( $items as $revid ) {
 196                         $rev = Revision::newFromId( $revid );
 197                         if( !isset( $rev ) ) {
 198                                 return false;
 199                         }
 200                         $this->updateRevision( $rev, $bitfield );
 201                         $this->updateRecentChanges( $rev, $bitfield );
 202
 203                         // For logging, maintain a count of revisions per page
 204                         $pageid = $rev->getPage();
 205                         if( isset( $pages[$pageid] ) ) {
 206                                 $pages[$pageid]++;
 207                         } else {
 208                                 $pages[$pageid] = 1;
 209                         }
 210                 }
 211
 212                 // Clear caches...
 213                 foreach( $pages as $pageid => $count ) {
 214                         $title = Title::newFromId( $pageid );
 215                         $this->updatePage( $title );
 216                         $this->updateLog( $title, $count, $bitfield, $comment );
 217                 }
 218
 219                 return true;
 220         }
 221
 222         /**
 223          * Update the revision's rev_deleted field
 224          * @param Revision $rev
 225          * @param int $bitfield new rev_deleted bitfield value
 226          */
 227         function updateRevision( $rev, $bitfield ) {
 228                 $this->db->update( 'revision',
 229                         array( 'rev_deleted' => $bitfield ),
 230                         array( 'rev_id' => $rev->getId() ),
 231                         'RevisionDeleter::updateRevision' );
 232         }
 233
 234         /**
 235          * Update the revision's recentchanges record if fields have been hidden
 236          * @param Revision $rev
 237          * @param int $bitfield new rev_deleted bitfield value
 238          */
 239         function updateRecentChanges( $rev, $bitfield ) {
 240                 $this->db->update( 'recentchanges',
 241                         array(
 242                                 'rc_user' => ($bitfield & Revision::DELETED_USER) ? 0 : $rev->getUser(),
 243                                 'rc_user_text' => ($bitfield & Revision::DELETED_USER) ? wfMsg( 'rev-deleted-user' ) : $rev->getUserText(),
 244                                 'rc_comment' => ($bitfield & Revision::DELETED_COMMENT) ? wfMsg( 'rev-deleted-comment' ) : $rev->getComment() ),
 245                         array(
 246                                 'rc_this_oldid' => $rev->getId() ),
 247                         'RevisionDeleter::updateRecentChanges' );
 248         }
 249
 250         /**
 251          * Touch the page's cache invalidation timestamp; this forces cached
 252          * history views to refresh, so any newly hidden or shown fields will
 253          * update properly.
 254          * @param Title $title
 255          */
 256         function updatePage( $title ) {
 257                 $title->invalidateCache();
 258         }
 259
 260         /**
 261          * Record a log entry on the action
 262          * @param Title $title
 263          * @param int $count the number of revisions altered for this page
 264          * @param int $bitfield the new rev_deleted value
 265          * @param string $comment
 266          */
 267         function updateLog( $title, $count, $bitfield, $comment ) {
 268                 $log = new LogPage( 'delete' );
 269                 $reason = "changed $count revisions to $bitfield";
 270                 $reason .= ": $comment";
 271                 $log->addEntry( 'revision', $title, $reason );
 272         }
 273 }
 274
 275