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<?php
/**
* 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 RevisionDelete
*/
/**
* Abstract base class for a list of deletable items. The list class
* needs to be able to make a query from a set of identifiers to pull
* relevant rows, to return RevDelItem subclasses wrapping them, and
* to wrap bulk update operations.
*/
abstract class RevDelList extends RevisionListBase {
function __construct( IContextSource $context, Title $title, array $ids ) {
parent::__construct( $context, $title );
$this->ids = $ids;
}
/**
* Get the DB field name associated with the ID list.
* This used to populate the log_search table for finding log entries.
* Override this function.
* @return string|null
*/
public static function getRelationType() {
return null;
}
/**
* Get the user right required for this list type
* Override this function.
* @since 1.22
* @return string|null
*/
public static function getRestriction() {
return null;
}
/**
* Get the revision deletion constant for this list type
* Override this function.
* @since 1.22
* @return int|null
*/
public static function getRevdelConstant() {
return null;
}
/**
* Suggest a target for the revision deletion
* Optionally override this function.
* @since 1.22
* @param Title|null $target User-supplied target
* @param array $ids
* @return Title|null
*/
public static function suggestTarget( $target, array $ids ) {
return $target;
}
/**
* Indicate whether any item in this list is suppressed
* @since 1.25
* @return bool
*/
public function areAnySuppressed() {
$bit = $this->getSuppressBit();
// @codingStandardsIgnoreStart Generic.CodeAnalysis.ForLoopWithTestFunctionCall.NotAllowed
for ( $this->reset(); $this->current(); $this->next() ) {
// @codingStandardsIgnoreEnd
$item = $this->current();
if ( $item->getBits() & $bit ) {
return true;
}
}
return false;
}
/**
* Set the visibility for the revisions in this list. Logging and
* transactions are done here.
*
* @param array $params Associative array of parameters. Members are:
* value: ExtractBitParams() bitfield array
* comment: The log comment.
* perItemStatus: Set if you want per-item status reports
* @return Status
* @since 1.23 Added 'perItemStatus' param
*/
public function setVisibility( array $params ) {
$bitPars = $params['value'];
$comment = $params['comment'];
$perItemStatus = isset( $params['perItemStatus'] ) ? $params['perItemStatus'] : false;
// CAS-style checks are done on the _deleted fields so the select
// does not need to use FOR UPDATE nor be in the atomic section
$dbw = wfGetDB( DB_MASTER );
$this->res = $this->doQuery( $dbw );
$dbw->startAtomic( __METHOD__ );
$status = Status::newGood();
$missing = array_flip( $this->ids );
$this->clearFileOps();
$idsForLog = [];
$authorIds = $authorIPs = [];
if ( $perItemStatus ) {
$status->itemStatuses = [];
}
// @codingStandardsIgnoreStart Generic.CodeAnalysis.ForLoopWithTestFunctionCall.NotAllowed
for ( $this->reset(); $this->current(); $this->next() ) {
// @codingStandardsIgnoreEnd
/** @var $item RevDelItem */
$item = $this->current();
unset( $missing[$item->getId()] );
if ( $perItemStatus ) {
$itemStatus = Status::newGood();
$status->itemStatuses[$item->getId()] = $itemStatus;
} else {
$itemStatus = $status;
}
$oldBits = $item->getBits();
// Build the actual new rev_deleted bitfield
$newBits = RevisionDeleter::extractBitfield( $bitPars, $oldBits );
if ( $oldBits == $newBits ) {
$itemStatus->warning( 'revdelete-no-change', $item->formatDate(), $item->formatTime() );
$status->failCount++;
continue;
} elseif ( $oldBits == 0 && $newBits != 0 ) {
$opType = 'hide';
} elseif ( $oldBits != 0 && $newBits == 0 ) {
$opType = 'show';
} else {
$opType = 'modify';
}
if ( $item->isHideCurrentOp( $newBits ) ) {
// Cannot hide current version text
$itemStatus->error( 'revdelete-hide-current', $item->formatDate(), $item->formatTime() );
$status->failCount++;
continue;
}
if ( !$item->canView() ) {
// Cannot access this revision
$msg = ( $opType == 'show' ) ?
'revdelete-show-no-access' : 'revdelete-modify-no-access';
$itemStatus->error( $msg, $item->formatDate(), $item->formatTime() );
$status->failCount++;
continue;
}
// Cannot just "hide from Sysops" without hiding any fields
if ( $newBits == Revision::DELETED_RESTRICTED ) {
$itemStatus->warning( 'revdelete-only-restricted', $item->formatDate(), $item->formatTime() );
$status->failCount++;
continue;
}
// Update the revision
$ok = $item->setBits( $newBits );
if ( $ok ) {
$idsForLog[] = $item->getId();
$status->successCount++;
if ( $item->getAuthorId() > 0 ) {
$authorIds[] = $item->getAuthorId();
} elseif ( IP::isIPAddress( $item->getAuthorName() ) ) {
$authorIPs[] = $item->getAuthorName();
}
} else {
$itemStatus->error( 'revdelete-concurrent-change', $item->formatDate(), $item->formatTime() );
$status->failCount++;
}
}
// Handle missing revisions
foreach ( $missing as $id => $unused ) {
if ( $perItemStatus ) {
$status->itemStatuses[$id] = Status::newFatal( 'revdelete-modify-missing', $id );
} else {
$status->error( 'revdelete-modify-missing', $id );
}
$status->failCount++;
}
if ( $status->successCount == 0 ) {
$dbw->rollback( __METHOD__ );
return $status;
}
// Save success count
$successCount = $status->successCount;
// Move files, if there are any
$status->merge( $this->doPreCommitUpdates() );
if ( !$status->isOK() ) {
// Fatal error, such as no configured archive directory
$dbw->rollback( __METHOD__ );
return $status;
}
// Log it
// @FIXME: $newBits/$oldBits set in for loop, makes IDE warnings too
$this->updateLog( [
'title' => $this->title,
'count' => $successCount,
'newBits' => $newBits,
'oldBits' => $oldBits,
'comment' => $comment,
'ids' => $idsForLog,
'authorIds' => $authorIds,
'authorIPs' => $authorIPs
] );
// Clear caches
$that = $this;
$dbw->onTransactionIdle( function() use ( $that ) {
$that->doPostCommitUpdates();
} );
$dbw->endAtomic( __METHOD__ );
return $status;
}
/**
* Reload the list data from the master DB. This can be done after setVisibility()
* to allow $item->getHTML() to show the new data.
*/
function reloadFromMaster() {
$dbw = wfGetDB( DB_MASTER );
$this->res = $this->doQuery( $dbw );
}
/**
* Record a log entry on the action
* @param array $params Associative array of parameters:
* newBits: The new value of the *_deleted bitfield
* oldBits: The old value of the *_deleted bitfield.
* title: The target title
* ids: The ID list
* comment: The log comment
* authorsIds: The array of the user IDs of the offenders
* authorsIPs: The array of the IP/anon user offenders
* @throws MWException
*/
protected function updateLog( $params ) {
// Get the URL param's corresponding DB field
$field = RevisionDeleter::getRelationType( $this->getType() );
if ( !$field ) {
throw new MWException( "Bad log URL param type!" );
}
// Put things hidden from sysops in the suppression log
if ( ( $params['newBits'] | $params['oldBits'] ) & $this->getSuppressBit() ) {
$logType = 'suppress';
} else {
$logType = 'delete';
}
// Add params for affected page and ids
$logParams = $this->getLogParams( $params );
// Actually add the deletion log entry
$logEntry = new ManualLogEntry( $logType, $this->getLogAction() );
$logEntry->setTarget( $params['title'] );
$logEntry->setComment( $params['comment'] );
$logEntry->setParameters( $logParams );
$logEntry->setPerformer( $this->getUser() );
// Allow for easy searching of deletion log items for revision/log items
$logEntry->setRelations( [
$field => $params['ids'],
'target_author_id' => $params['authorIds'],
'target_author_ip' => $params['authorIPs'],
] );
$logId = $logEntry->insert();
$logEntry->publish( $logId );
}
/**
* Get the log action for this list type
* @return string
*/
public function getLogAction() {
return 'revision';
}
/**
* Get log parameter array.
* @param array $params Associative array of log parameters, same as updateLog()
* @return array
*/
public function getLogParams( $params ) {
return [
'4::type' => $this->getType(),
'5::ids' => $params['ids'],
'6::ofield' => $params['oldBits'],
'7::nfield' => $params['newBits'],
];
}
/**
* Clear any data structures needed for doPreCommitUpdates() and doPostCommitUpdates()
* STUB
*/
public function clearFileOps() {
}
/**
* A hook for setVisibility(): do batch updates pre-commit.
* STUB
* @return Status
*/
public function doPreCommitUpdates() {
return Status::newGood();
}
/**
* A hook for setVisibility(): do any necessary updates post-commit.
* STUB
* @return Status
*/
public function doPostCommitUpdates() {
return Status::newGood();
}
/**
* Get the integer value of the flag used for suppression
*/
abstract public function getSuppressBit();
}