Your IP : 108.162.241.184
<?php
/**
* Implements Special:Revisiondelete
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @file
* @ingroup SpecialPage
*/
/**
* Special page allowing users with the appropriate permissions to view
* and hide revisions. Log items can also be hidden.
*
* @ingroup SpecialPage
*/
class SpecialRevisionDelete extends UnlistedSpecialPage {
/** True if the submit button was clicked, and the form was posted */
var $submitClicked;
/** Target ID list */
var $ids;
/** Archive name, for reviewing deleted files */
var $archiveName;
/** Edit token for securing image views against XSS */
var $token;
/** Title object for target parameter */
var $targetObj;
/** Deletion type, may be revision, archive, oldimage, filearchive, logging. */
var $typeName;
/** Array of checkbox specs (message, name, deletion bits) */
var $checks;
/** Information about the current type */
var $typeInfo;
/** The RevDel_List object, storing the list of items to be deleted/undeleted */
var $list;
/**
* Assorted information about each type, needed by the special page.
* TODO Move some of this to the list class
*/
static $allowedTypes = array(
'revision' => array(
'check-label' => 'revdelete-hide-text',
'deletion-bits' => Revision::DELETED_TEXT,
'success' => 'revdelete-success',
'failure' => 'revdelete-failure',
'list-class' => 'RevDel_RevisionList',
'permission' => 'deleterevision',
),
'archive' => array(
'check-label' => 'revdelete-hide-text',
'deletion-bits' => Revision::DELETED_TEXT,
'success' => 'revdelete-success',
'failure' => 'revdelete-failure',
'list-class' => 'RevDel_ArchiveList',
'permission' => 'deleterevision',
),
'oldimage'=> array(
'check-label' => 'revdelete-hide-image',
'deletion-bits' => File::DELETED_FILE,
'success' => 'revdelete-success',
'failure' => 'revdelete-failure',
'list-class' => 'RevDel_FileList',
'permission' => 'deleterevision',
),
'filearchive' => array(
'check-label' => 'revdelete-hide-image',
'deletion-bits' => File::DELETED_FILE,
'success' => 'revdelete-success',
'failure' => 'revdelete-failure',
'list-class' => 'RevDel_ArchivedFileList',
'permission' => 'deleterevision',
),
'logging' => array(
'check-label' => 'revdelete-hide-name',
'deletion-bits' => LogPage::DELETED_ACTION,
'success' => 'logdelete-success',
'failure' => 'logdelete-failure',
'list-class' => 'RevDel_LogList',
'permission' => 'deletelogentry',
),
);
/** Type map to support old log entries */
static $deprecatedTypeMap = array(
'oldid' => 'revision',
'artimestamp' => 'archive',
'oldimage' => 'oldimage',
'fileid' => 'filearchive',
'logid' => 'logging',
);
public function __construct() {
parent::__construct( 'Revisiondelete', 'deletedhistory' );
}
public function execute( $par ) {
$this->checkPermissions();
$this->checkReadOnly();
$output = $this->getOutput();
$user = $this->getUser();
$this->setHeaders();
$this->outputHeader();
$request = $this->getRequest();
$this->submitClicked = $request->wasPosted() && $request->getBool( 'wpSubmit' );
# Handle our many different possible input types.
$ids = $request->getVal( 'ids' );
if ( !is_null( $ids ) ) {
# Allow CSV, for backwards compatibility, or a single ID for show/hide links
$this->ids = explode( ',', $ids );
} else {
# Array input
$this->ids = array_keys( $request->getArray( 'ids', array() ) );
}
// $this->ids = array_map( 'intval', $this->ids );
$this->ids = array_unique( array_filter( $this->ids ) );
if ( $request->getVal( 'action' ) == 'historysubmit' || $request->getVal( 'action' ) == 'revisiondelete' ) {
// For show/hide form submission from history page
// Since we are access through index.php?title=XXX&action=historysubmit
// getFullTitle() will contain the target title and not our title
$this->targetObj = $this->getFullTitle();
$this->typeName = 'revision';
} else {
$this->typeName = $request->getVal( 'type' );
$this->targetObj = Title::newFromText( $request->getText( 'target' ) );
if ( $this->targetObj && $this->targetObj->isSpecial( 'Log' ) && count( $this->ids ) !== 0 ) {
$result = wfGetDB( DB_SLAVE )->select( 'logging',
'log_type',
array( 'log_id' => $this->ids ),
__METHOD__,
array( 'DISTINCT' )
);
if ( $result->numRows() == 1 ) {
// If there's only one type, the target can be set to include it.
$this->targetObj = SpecialPage::getTitleFor( 'Log', $result->current()->log_type );
}
}
}
# For reviewing deleted files...
$this->archiveName = $request->getVal( 'file' );
$this->token = $request->getVal( 'token' );
if ( $this->archiveName && $this->targetObj ) {
$this->tryShowFile( $this->archiveName );
return;
}
if ( isset( self::$deprecatedTypeMap[$this->typeName] ) ) {
$this->typeName = self::$deprecatedTypeMap[$this->typeName];
}
# No targets?
if( !isset( self::$allowedTypes[$this->typeName] ) || count( $this->ids ) == 0 ) {
throw new ErrorPageError( 'revdelete-nooldid-title', 'revdelete-nooldid-text' );
}
$this->typeInfo = self::$allowedTypes[$this->typeName];
$this->mIsAllowed = $user->isAllowed( $this->typeInfo['permission'] );
# If we have revisions, get the title from the first one
# since they should all be from the same page. This allows
# for more flexibility with page moves...
if( $this->typeName == 'revision' ) {
$rev = Revision::newFromId( $this->ids[0] );
$this->targetObj = $rev ? $rev->getTitle() : $this->targetObj;
}
$this->otherReason = $request->getVal( 'wpReason' );
# We need a target page!
if( is_null( $this->targetObj ) ) {
$output->addWikiMsg( 'undelete-header' );
return;
}
# Give a link to the logs/hist for this page
$this->showConvenienceLinks();
# Initialise checkboxes
$this->checks = array(
array( $this->typeInfo['check-label'], 'wpHidePrimary', $this->typeInfo['deletion-bits'] ),
array( 'revdelete-hide-comment', 'wpHideComment', Revision::DELETED_COMMENT ),
array( 'revdelete-hide-user', 'wpHideUser', Revision::DELETED_USER )
);
if( $user->isAllowed( 'suppressrevision' ) ) {
$this->checks[] = array( 'revdelete-hide-restricted',
'wpHideRestricted', Revision::DELETED_RESTRICTED );
}
# Either submit or create our form
if( $this->mIsAllowed && $this->submitClicked ) {
$this->submit( $request );
} else {
$this->showForm();
}
$qc = $this->getLogQueryCond();
# Show relevant lines from the deletion log
$deleteLogPage = new LogPage( 'delete' );
$output->addHTML( "<h2>" . $deleteLogPage->getName()->escaped() . "</h2>\n" );
LogEventsList::showLogExtract( $output, 'delete',
$this->targetObj, '', array( 'lim' => 25, 'conds' => $qc ) );
# Show relevant lines from the suppression log
if( $user->isAllowed( 'suppressionlog' ) ) {
$suppressLogPage = new LogPage( 'suppress' );
$output->addHTML( "<h2>" . $suppressLogPage->getName()->escaped() . "</h2>\n" );
LogEventsList::showLogExtract( $output, 'suppress',
$this->targetObj, '', array( 'lim' => 25, 'conds' => $qc ) );
}
}
/**
* Show some useful links in the subtitle
*/
protected function showConvenienceLinks() {
# Give a link to the logs/hist for this page
if( $this->targetObj ) {
$links = array();
$links[] = Linker::linkKnown(
SpecialPage::getTitleFor( 'Log' ),
$this->msg( 'viewpagelogs' )->escaped(),
array(),
array( 'page' => $this->targetObj->getPrefixedText() )
);
if ( !$this->targetObj->isSpecialPage() ) {
# Give a link to the page history
$links[] = Linker::linkKnown(
$this->targetObj,
$this->msg( 'pagehist' )->escaped(),
array(),
array( 'action' => 'history' )
);
# Link to deleted edits
if( $this->getUser()->isAllowed( 'undelete' ) ) {
$undelete = SpecialPage::getTitleFor( 'Undelete' );
$links[] = Linker::linkKnown(
$undelete,
$this->msg( 'deletedhist' )->escaped(),
array(),
array( 'target' => $this->targetObj->getPrefixedDBkey() )
);
}
}
# Logs themselves don't have histories or archived revisions
$this->getOutput()->addSubtitle( $this->getLanguage()->pipeList( $links ) );
}
}
/**
* Get the condition used for fetching log snippets
* @return array
*/
protected function getLogQueryCond() {
$conds = array();
// Revision delete logs for these item
$conds['log_type'] = array( 'delete', 'suppress' );
$conds['log_action'] = $this->getList()->getLogAction();
$conds['ls_field'] = RevisionDeleter::getRelationType( $this->typeName );
$conds['ls_value'] = $this->ids;
return $conds;
}
/**
* Show a deleted file version requested by the visitor.
* TODO Mostly copied from Special:Undelete. Refactor.
*/
protected function tryShowFile( $archiveName ) {
$repo = RepoGroup::singleton()->getLocalRepo();
$oimage = $repo->newFromArchiveName( $this->targetObj, $archiveName );
$oimage->load();
// Check if user is allowed to see this file
if ( !$oimage->exists() ) {
$this->getOutput()->addWikiMsg( 'revdelete-no-file' );
return;
}
$user = $this->getUser();
if( !$oimage->userCan( File::DELETED_FILE, $user ) ) {
if( $oimage->isDeleted( File::DELETED_RESTRICTED ) ) {
throw new PermissionsError( 'suppressrevision' );
} else {
throw new PermissionsError( 'deletedtext' );
}
}
if ( !$user->matchEditToken( $this->token, $archiveName ) ) {
$lang = $this->getLanguage();
$this->getOutput()->addWikiMsg( 'revdelete-show-file-confirm',
$this->targetObj->getText(),
$lang->userDate( $oimage->getTimestamp(), $user ),
$lang->userTime( $oimage->getTimestamp(), $user ) );
$this->getOutput()->addHTML(
Xml::openElement( 'form', array(
'method' => 'POST',
'action' => $this->getTitle()->getLocalUrl(
'target=' . urlencode( $this->targetObj->getPrefixedDBkey() ) .
'&file=' . urlencode( $archiveName ) .
'&token=' . urlencode( $user->getEditToken( $archiveName ) ) )
)
) .
Xml::submitButton( $this->msg( 'revdelete-show-file-submit' )->text() ) .
'</form>'
);
return;
}
$this->getOutput()->disable();
# We mustn't allow the output to be Squid cached, otherwise
# if an admin previews a deleted image, and it's cached, then
# a user without appropriate permissions can toddle off and
# nab the image, and Squid will serve it
$this->getRequest()->response()->header( 'Expires: ' . gmdate( 'D, d M Y H:i:s', 0 ) . ' GMT' );
$this->getRequest()->response()->header( 'Cache-Control: no-cache, no-store, max-age=0, must-revalidate' );
$this->getRequest()->response()->header( 'Pragma: no-cache' );
$key = $oimage->getStorageKey();
$path = $repo->getZonePath( 'deleted' ) . '/' . $repo->getDeletedHashPath( $key ) . $key;
$repo->streamFile( $path );
}
/**
* Get the list object for this request
*/
protected function getList() {
if ( is_null( $this->list ) ) {
$class = $this->typeInfo['list-class'];
$this->list = new $class( $this->getContext(), $this->targetObj, $this->ids );
}
return $this->list;
}
/**
* Show a list of items that we will operate on, and show a form with checkboxes
* which will allow the user to choose new visibility settings.
*/
protected function showForm() {
$UserAllowed = true;
if ( $this->typeName == 'logging' ) {
$this->getOutput()->addWikiMsg( 'logdelete-selected', $this->getLanguage()->formatNum( count( $this->ids ) ) );
} else {
$this->getOutput()->addWikiMsg( 'revdelete-selected',
$this->targetObj->getPrefixedText(), count( $this->ids ) );
}
$this->getOutput()->addHTML( "<ul>" );
$numRevisions = 0;
// Live revisions...
$list = $this->getList();
for ( $list->reset(); $list->current(); $list->next() ) {
$item = $list->current();
if ( !$item->canView() ) {
if( !$this->submitClicked ) {
throw new PermissionsError( 'suppressrevision' );
}
$UserAllowed = false;
}
$numRevisions++;
$this->getOutput()->addHTML( $item->getHTML() );
}
if( !$numRevisions ) {
throw new ErrorPageError( 'revdelete-nooldid-title', 'revdelete-nooldid-text' );
}
$this->getOutput()->addHTML( "</ul>" );
// Explanation text
$this->addUsageText();
// Normal sysops can always see what they did, but can't always change it
if( !$UserAllowed ) return;
// Show form if the user can submit
if( $this->mIsAllowed ) {
$out = Xml::openElement( 'form', array( 'method' => 'post',
'action' => $this->getTitle()->getLocalUrl( array( 'action' => 'submit' ) ),
'id' => 'mw-revdel-form-revisions' ) ) .
Xml::fieldset( $this->msg( 'revdelete-legend' )->text() ) .
$this->buildCheckBoxes() .
Xml::openElement( 'table' ) .
"<tr>\n" .
'<td class="mw-label">' .
Xml::label( $this->msg( 'revdelete-log' )->text(), 'wpRevDeleteReasonList' ) .
'</td>' .
'<td class="mw-input">' .
Xml::listDropDown( 'wpRevDeleteReasonList',
$this->msg( 'revdelete-reason-dropdown' )->inContentLanguage()->text(),
$this->msg( 'revdelete-reasonotherlist' )->inContentLanguage()->text(),
'', 'wpReasonDropDown', 1
) .
'</td>' .
"</tr><tr>\n" .
'<td class="mw-label">' .
Xml::label( $this->msg( 'revdelete-otherreason' )->text(), 'wpReason' ) .
'</td>' .
'<td class="mw-input">' .
Xml::input( 'wpReason', 60, $this->otherReason, array( 'id' => 'wpReason', 'maxlength' => 100 ) ) .
'</td>' .
"</tr><tr>\n" .
'<td></td>' .
'<td class="mw-submit">' .
Xml::submitButton( $this->msg( 'revdelete-submit', $numRevisions )->text(),
array( 'name' => 'wpSubmit' ) ) .
'</td>' .
"</tr>\n" .
Xml::closeElement( 'table' ) .
Html::hidden( 'wpEditToken', $this->getUser()->getEditToken() ) .
Html::hidden( 'target', $this->targetObj->getPrefixedText() ) .
Html::hidden( 'type', $this->typeName ) .
Html::hidden( 'ids', implode( ',', $this->ids ) ) .
Xml::closeElement( 'fieldset' ) . "\n";
} else {
$out = '';
}
if( $this->mIsAllowed ) {
$out .= Xml::closeElement( 'form' ) . "\n";
// Show link to edit the dropdown reasons
if( $this->getUser()->isAllowed( 'editinterface' ) ) {
$title = Title::makeTitle( NS_MEDIAWIKI, 'Revdelete-reason-dropdown' );
$link = Linker::link(
$title,
$this->msg( 'revdelete-edit-reasonlist' )->escaped(),
array(),
array( 'action' => 'edit' )
);
$out .= Xml::tags( 'p', array( 'class' => 'mw-revdel-editreasons' ), $link ) . "\n";
}
}
$this->getOutput()->addHTML( $out );
}
/**
* Show some introductory text
* @todo FIXME: Wikimedia-specific policy text
*/
protected function addUsageText() {
$this->getOutput()->addWikiMsg( 'revdelete-text' );
if( $this->getUser()->isAllowed( 'suppressrevision' ) ) {
$this->getOutput()->addWikiMsg( 'revdelete-suppress-text' );
}
if( $this->mIsAllowed ) {
$this->getOutput()->addWikiMsg( 'revdelete-confirm' );
}
}
/**
* @return String: HTML
*/
protected function buildCheckBoxes() {
$html = '<table>';
// If there is just one item, use checkboxes
$list = $this->getList();
if( $list->length() == 1 ) {
$list->reset();
$bitfield = $list->current()->getBits(); // existing field
if( $this->submitClicked ) {
$bitfield = $this->extractBitfield( $this->extractBitParams(), $bitfield );
}
foreach( $this->checks as $item ) {
list( $message, $name, $field ) = $item;
$innerHTML = Xml::checkLabel( $this->msg( $message )->text(), $name, $name, $bitfield & $field );
if( $field == Revision::DELETED_RESTRICTED )
$innerHTML = "<b>$innerHTML</b>";
$line = Xml::tags( 'td', array( 'class' => 'mw-input' ), $innerHTML );
$html .= "<tr>$line</tr>\n";
}
// Otherwise, use tri-state radios
} else {
$html .= '<tr>';
$html .= '<th class="mw-revdel-checkbox">' . $this->msg( 'revdelete-radio-same' )->escaped() . '</th>';
$html .= '<th class="mw-revdel-checkbox">' . $this->msg( 'revdelete-radio-unset' )->escaped() . '</th>';
$html .= '<th class="mw-revdel-checkbox">' . $this->msg( 'revdelete-radio-set' )->escaped() . '</th>';
$html .= "<th></th></tr>\n";
foreach( $this->checks as $item ) {
list( $message, $name, $field ) = $item;
// If there are several items, use third state by default...
if( $this->submitClicked ) {
$selected = $this->getRequest()->getInt( $name, 0 /* unchecked */ );
} else {
$selected = -1; // use existing field
}
$line = '<td class="mw-revdel-checkbox">' . Xml::radio( $name, -1, $selected == -1 ) . '</td>';
$line .= '<td class="mw-revdel-checkbox">' . Xml::radio( $name, 0, $selected == 0 ) . '</td>';
$line .= '<td class="mw-revdel-checkbox">' . Xml::radio( $name, 1, $selected == 1 ) . '</td>';
$label = $this->msg( $message )->escaped();
if( $field == Revision::DELETED_RESTRICTED ) {
$label = "<b>$label</b>";
}
$line .= "<td>$label</td>";
$html .= "<tr>$line</tr>\n";
}
}
$html .= '</table>';
return $html;
}
/**
* UI entry point for form submission.
* @throws PermissionsError
* @return bool
*/
protected function submit() {
# Check edit token on submission
$token = $this->getRequest()->getVal( 'wpEditToken' );
if( $this->submitClicked && !$this->getUser()->matchEditToken( $token ) ) {
$this->getOutput()->addWikiMsg( 'sessionfailure' );
return false;
}
$bitParams = $this->extractBitParams();
$listReason = $this->getRequest()->getText( 'wpRevDeleteReasonList', 'other' ); // from dropdown
$comment = $listReason;
if( $comment != 'other' && $this->otherReason != '' ) {
// Entry from drop down menu + additional comment
$comment .= $this->msg( 'colon-separator' )->inContentLanguage()->text() . $this->otherReason;
} elseif( $comment == 'other' ) {
$comment = $this->otherReason;
}
# Can the user set this field?
if( $bitParams[Revision::DELETED_RESTRICTED] == 1 && !$this->getUser()->isAllowed( 'suppressrevision' ) ) {
throw new PermissionsError( 'suppressrevision' );
}
# If the save went through, go to success message...
$status = $this->save( $bitParams, $comment, $this->targetObj );
if ( $status->isGood() ) {
$this->success();
return true;
# ...otherwise, bounce back to form...
} else {
$this->failure( $status );
}
return false;
}
/**
* Report that the submit operation succeeded
*/
protected function success() {
$this->getOutput()->setPageTitle( $this->msg( 'actioncomplete' ) );
$this->getOutput()->wrapWikiMsg( "<span class=\"success\">\n$1\n</span>", $this->typeInfo['success'] );
$this->list->reloadFromMaster();
$this->showForm();
}
/**
* Report that the submit operation failed
*/
protected function failure( $status ) {
$this->getOutput()->setPageTitle( $this->msg( 'actionfailed' ) );
$this->getOutput()->addWikiText( $status->getWikiText( $this->typeInfo['failure'] ) );
$this->showForm();
}
/**
* Put together an array that contains -1, 0, or the *_deleted const for each bit
*
* @return array
*/
protected function extractBitParams() {
$bitfield = array();
foreach( $this->checks as $item ) {
list( /* message */, $name, $field ) = $item;
$val = $this->getRequest()->getInt( $name, 0 /* unchecked */ );
if( $val < -1 || $val > 1) {
$val = -1; // -1 for existing value
}
$bitfield[$field] = $val;
}
if( !isset( $bitfield[Revision::DELETED_RESTRICTED] ) ) {
$bitfield[Revision::DELETED_RESTRICTED] = 0;
}
return $bitfield;
}
/**
* Put together a rev_deleted bitfield
* @param array $bitPars extractBitParams() params
* @param int $oldfield current bitfield
* @return array
*/
public static function extractBitfield( $bitPars, $oldfield ) {
// Build the actual new rev_deleted bitfield
$newBits = 0;
foreach( $bitPars as $const => $val ) {
if( $val == 1 ) {
$newBits |= $const; // $const is the *_deleted const
} elseif( $val == -1 ) {
$newBits |= ($oldfield & $const); // use existing
}
}
return $newBits;
}
/**
* Do the write operations. Simple wrapper for RevDel_*List::setVisibility().
* @param $bitfield
* @param $reason
* @param $title
* @return
*/
protected function save( $bitfield, $reason, $title ) {
return $this->getList()->setVisibility(
array( 'value' => $bitfield, 'comment' => $reason )
);
}
protected function getGroupName() {
return 'pagetools';
}
}