ApiQueryRevisions::getRollbackToken() - Code Metrics - wikimedia/mediawiki - Measure and Improve Code Quality continuously with Scrutinizer

ApiQueryRevisions::getRollbackToken() A
last analyzed 2016-11-13 17:42 UTC

↳ Parent: ApiQueryRevisions

Complexity

Conditions	2
Paths	2

Size

Total Lines	8
Code Lines	5

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	2
eloc	5
nc	2
nop	3
dl	0
loc	8
rs	9.4285
c	0
b	0
f	0

<?php
/**
 *
 *
 * Created on Sep 7, 2006
 *
 * Copyright © 2006 Yuri Astrakhan "<Firstname><Lastname>@gmail.com"
 *
 * 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
 */

/**
 * A query action to enumerate revisions of a given page, or show top revisions
 * of multiple pages. Various pieces of information may be shown - flags,
 * comments, and the actual wiki markup of the rev. In the enumeration mode,
 * ranges of revisions may be requested and filtered.
 *
 * @ingroup API
 */
class ApiQueryRevisions extends ApiQueryRevisionsBase {

	private $token = null;

	public function __construct( ApiQuery $query, $moduleName ) {
		parent::__construct( $query, $moduleName, 'rv' );
	}

	private $tokenFunctions;

	/** @deprecated since 1.24 */
	protected function getTokenFunctions() {
		// tokenname => function
		// function prototype is func($pageid, $title, $rev)
		// should return token or false

		// Don't call the hooks twice
		if ( isset( $this->tokenFunctions ) ) {
			return $this->tokenFunctions;
		}

		// If we're in a mode that breaks the same-origin policy, no tokens can
		// be obtained
		if ( $this->lacksSameOriginSecurity() ) {
			return [];
		}

		$this->tokenFunctions = [
			'rollback' => [ 'ApiQueryRevisions', 'getRollbackToken' ]
		];
		Hooks::run( 'APIQueryRevisionsTokens', [ &$this->tokenFunctions ] );

		return $this->tokenFunctions;
	}

	/**
	 * @deprecated since 1.24
	 * @param int $pageid
	 * @param Title $title
	 * @param Revision $rev
	 * @return bool|string
	 */
	public static function getRollbackToken( $pageid, $title, $rev ) {
		global $wgUser;
		if ( !$wgUser->isAllowed( 'rollback' ) ) {
			return false;
		}

		return $wgUser->getEditToken( 'rollback' );
	}

	protected function run( ApiPageSet $resultPageSet = null ) {
		$params = $this->extractRequestParams( false );

		// If any of those parameters are used, work in 'enumeration' mode.
		// Enum mode can only be used when exactly one page is provided.
		// Enumerating revisions on multiple pages make it extremely
		// difficult to manage continuations and require additional SQL indexes
		$enumRevMode = ( $params['user'] !== null || $params['excludeuser'] !== null ||
			$params['limit'] !== null || $params['startid'] !== null ||
			$params['endid'] !== null || $params['dir'] === 'newer' ||
			$params['start'] !== null || $params['end'] !== null );

		$pageSet = $this->getPageSet();
		$pageCount = $pageSet->getGoodTitleCount();
		$revCount = $pageSet->getRevisionCount();

		// Optimization -- nothing to do
		if ( $revCount === 0 && $pageCount === 0 ) {
			// Nothing to do
			return;
		}
		if ( $revCount > 0 && count( $pageSet->getLiveRevisionIDs() ) === 0 ) {
			// We're in revisions mode but all given revisions are deleted
			return;
		}

		if ( $revCount > 0 && $enumRevMode ) {
			$this->dieUsage(
				'The revids= parameter may not be used with the list options ' .
					'(limit, startid, endid, dirNewer, start, end).',
				'revids'
			);
		}

		if ( $pageCount > 1 && $enumRevMode ) {
			$this->dieUsage(
				'titles, pageids or a generator was used to supply multiple pages, ' .
					'but the limit, startid, endid, dirNewer, user, excludeuser, start ' .
					'and end parameters may only be used on a single page.',
				'multpages'
			);
		}

		// In non-enum mode, rvlimit can't be directly used. Use the maximum
		// allowed value.
		if ( !$enumRevMode ) {
			$this->setParsedLimit = false;
			$params['limit'] = 'max';
		}

		$db = $this->getDB();
		$this->addTables( [ 'revision', 'page' ] );
		$this->addJoinConds(
			[ 'page' => [ 'INNER JOIN', [ 'page_id = rev_page' ] ] ]
		);

		if ( $resultPageSet === null ) {
			$this->parseParameters( $params );
			$this->token = $params['token'];
			$this->addFields( Revision::selectFields() );
			if ( $this->token !== null || $pageCount > 0 ) {
				$this->addFields( Revision::selectPageFields() );
			}
		} else {
			$this->limit = $this->getParameter( 'limit' ) ?: 10;
			$this->addFields( [ 'rev_id', 'rev_timestamp', 'rev_page' ] );
		}

		if ( $this->fld_tags ) {
			$this->addTables( 'tag_summary' );
			$this->addJoinConds(
				[ 'tag_summary' => [ 'LEFT JOIN', [ 'rev_id=ts_rev_id' ] ] ]
			);
			$this->addFields( 'ts_tags' );
		}

		if ( $params['tag'] !== null ) {
			$this->addTables( 'change_tag' );
			$this->addJoinConds(
				[ 'change_tag' => [ 'INNER JOIN', [ 'rev_id=ct_rev_id' ] ] ]
			);
			$this->addWhereFld( 'ct_tag', $params['tag'] );
		}

		if ( $this->fetchContent ) {
			// For each page we will request, the user must have read rights for that page
			$user = $this->getUser();
			/** @var $title Title */
			foreach ( $pageSet->getGoodTitles() as $title ) {
				if ( !$title->userCan( 'read', $user ) ) {
					$this->dieUsage(
						'The current user is not allowed to read ' . $title->getPrefixedText(),
						'accessdenied' );
				}
			}

			$this->addTables( 'text' );
			$this->addJoinConds(
				[ 'text' => [ 'INNER JOIN', [ 'rev_text_id=old_id' ] ] ]
			);
			$this->addFields( 'old_id' );
			$this->addFields( Revision::selectTextFields() );
		}

		// add user name, if needed
		if ( $this->fld_user ) {
			$this->addTables( 'user' );
			$this->addJoinConds( [ 'user' => Revision::userJoinCond() ] );
			$this->addFields( Revision::selectUserFields() );
		}

		if ( $enumRevMode ) {
			// Indexes targeted:
			//  page_timestamp if we don't have rvuser
			//  page_user_timestamp if we have a logged-in rvuser
			//  page_timestamp or usertext_timestamp if we have an IP rvuser

			// This is mostly to prevent parameter errors (and optimize SQL?)
			if ( $params['startid'] !== null && $params['start'] !== null ) {
				$this->dieUsage( 'start and startid cannot be used together', 'badparams' );
			}

			if ( $params['endid'] !== null && $params['end'] !== null ) {
				$this->dieUsage( 'end and endid cannot be used together', 'badparams' );
			}

			if ( $params['user'] !== null && $params['excludeuser'] !== null ) {
				$this->dieUsage( 'user and excludeuser cannot be used together', 'badparams' );
			}

			if ( $params['continue'] !== null ) {
				$cont = explode( '|', $params['continue'] );
				$this->dieContinueUsageIf( count( $cont ) != 2 );
				$op = ( $params['dir'] === 'newer' ? '>' : '<' );
				$continueTimestamp = $db->addQuotes( $db->timestamp( $cont[0] ) );
				$continueId = (int)$cont[1];
				$this->dieContinueUsageIf( $continueId != $cont[1] );
				$this->addWhere( "rev_timestamp $op $continueTimestamp OR " .
					"(rev_timestamp = $continueTimestamp AND " .
					"rev_id $op= $continueId)"
				);
			}

			$this->addTimestampWhereRange( 'rev_timestamp', $params['dir'],
				$params['start'], $params['end'] );
			$this->addWhereRange( 'rev_id', $params['dir'],
				$params['startid'], $params['endid'] );

			// There is only one ID, use it
			$ids = array_keys( $pageSet->getGoodTitles() );
			$this->addWhereFld( 'rev_page', reset( $ids ) );

			if ( $params['user'] !== null ) {
				$user = User::newFromName( $params['user'] );
				if ( $user && $user->getId() > 0 ) {
					$this->addWhereFld( 'rev_user', $user->getId() );
				} else {
					$this->addWhereFld( 'rev_user_text', $params['user'] );
				}
			} elseif ( $params['excludeuser'] !== null ) {
				$user = User::newFromName( $params['excludeuser'] );
				if ( $user && $user->getId() > 0 ) {
					$this->addWhere( 'rev_user != ' . $user->getId() );
				} else {
					$this->addWhere( 'rev_user_text != ' .
						$db->addQuotes( $params['excludeuser'] ) );
				}
			}
			if ( $params['user'] !== null || $params['excludeuser'] !== null ) {
				// Paranoia: avoid brute force searches (bug 17342)
				if ( !$this->getUser()->isAllowed( 'deletedhistory' ) ) {
					$bitmask = Revision::DELETED_USER;
				} elseif ( !$this->getUser()->isAllowedAny( 'suppressrevision', 'viewsuppressed' ) ) {
					$bitmask = Revision::DELETED_USER | Revision::DELETED_RESTRICTED;
				} else {
					$bitmask = 0;
				}
				if ( $bitmask ) {
					$this->addWhere( $db->bitAnd( 'rev_deleted', $bitmask ) . " != $bitmask" );
				}
			}
		} elseif ( $revCount > 0 ) {
			// Always targets the PRIMARY index

			$revs = $pageSet->getLiveRevisionIDs();

			// Get all revision IDs
			$this->addWhereFld( 'rev_id', array_keys( $revs ) );

			if ( $params['continue'] !== null ) {
				$this->addWhere( 'rev_id >= ' . intval( $params['continue'] ) );
			}
			$this->addOption( 'ORDER BY', 'rev_id' );
		} elseif ( $pageCount > 0 ) {
			// Always targets the rev_page_id index

			$titles = $pageSet->getGoodTitles();

			// When working in multi-page non-enumeration mode,
			// limit to the latest revision only
			$this->addWhere( 'page_latest=rev_id' );

			// Get all page IDs
			$this->addWhereFld( 'page_id', array_keys( $titles ) );
			// Every time someone relies on equality propagation, god kills a kitten :)
			$this->addWhereFld( 'rev_page', array_keys( $titles ) );

			if ( $params['continue'] !== null ) {
				$cont = explode( '|', $params['continue'] );
				$this->dieContinueUsageIf( count( $cont ) != 2 );
				$pageid = intval( $cont[0] );
				$revid = intval( $cont[1] );
				$this->addWhere(
					"rev_page > $pageid OR " .
					"(rev_page = $pageid AND " .
					"rev_id >= $revid)"
				);
			}
			$this->addOption( 'ORDER BY', [
				'rev_page',
				'rev_id'
			] );
		} else {
			ApiBase::dieDebug( __METHOD__, 'param validation?' );
		}

		$this->addOption( 'LIMIT', $this->limit + 1 );

		$count = 0;
		$generated = [];
		$hookData = [];
		$res = $this->select( __METHOD__, [], $hookData );

		foreach ( $res as $row ) {
			if ( ++$count > $this->limit ) {
				// We've reached the one extra which shows that there are
				// additional pages to be had. Stop here...
				if ( $enumRevMode ) {
					$this->setContinueEnumParameter( 'continue',
						$row->rev_timestamp . '|' . intval( $row->rev_id ) );
				} elseif ( $revCount > 0 ) {
					$this->setContinueEnumParameter( 'continue', intval( $row->rev_id ) );
				} else {
					$this->setContinueEnumParameter( 'continue', intval( $row->rev_page ) .
						'|' . intval( $row->rev_id ) );
				}
				break;
			}

			if ( $resultPageSet !== null ) {
				$generated[] = $row->rev_id;
			} else {
				$revision = new Revision( $row );
/** @return stdClass|null */
function mayReturnNull() { }

function doesNotAcceptNull(stdClass $x) { }

// With potential error.
function withoutCheck() {
    $x = mayReturnNull();
    doesNotAcceptNull($x); // Potential error here.
}

// Safe - Alternative 1
function withCheck1() {
    $x = mayReturnNull();
    if ( ! $x instanceof stdClass) {
        throw new \LogicException('$x must be defined.');
    }
    doesNotAcceptNull($x);
}

// Safe - Alternative 2
function withCheck2() {
    $x = mayReturnNull();
    if ($x instanceof stdClass) {
        doesNotAcceptNull($x);
    }
}
				$rev = $this->extractRevisionInfo( $revision, $row );
/** @return stdClass|null */
function mayReturnNull() { }

function doesNotAcceptNull(stdClass $x) { }

// With potential error.
function withoutCheck() {
    $x = mayReturnNull();
    doesNotAcceptNull($x); // Potential error here.
}

// Safe - Alternative 1
function withCheck1() {
    $x = mayReturnNull();
    if ( ! $x instanceof stdClass) {
        throw new \LogicException('$x must be defined.');
    }
    doesNotAcceptNull($x);
}

// Safe - Alternative 2
function withCheck2() {
    $x = mayReturnNull();
    if ($x instanceof stdClass) {
        doesNotAcceptNull($x);
    }
}

				if ( $this->token !== null ) {
					$title = $revision->getTitle();
					$tokenFunctions = $this->getTokenFunctions();
					foreach ( $this->token as $t ) {
						$val = call_user_func( $tokenFunctions[$t], $title->getArticleID(), $title, $revision );
						if ( $val === false ) {
							$this->setWarning( "Action '$t' is not allowed for the current user" );
						} else {
							$rev[$t . 'token'] = $val;
						}
					}
				}

				$fit = $this->processRow( $row, $rev, $hookData ) &&
/** @return stdClass|null */
function mayReturnNull() { }

function doesNotAcceptNull(stdClass $x) { }

// With potential error.
function withoutCheck() {
    $x = mayReturnNull();
    doesNotAcceptNull($x); // Potential error here.
}

// Safe - Alternative 1
function withCheck1() {
    $x = mayReturnNull();
    if ( ! $x instanceof stdClass) {
        throw new \LogicException('$x must be defined.');
    }
    doesNotAcceptNull($x);
}

// Safe - Alternative 2
function withCheck2() {
    $x = mayReturnNull();
    if ($x instanceof stdClass) {
        doesNotAcceptNull($x);
    }
}
					$this->addPageSubItem( $row->rev_page, $rev, 'rev' );
				if ( !$fit ) {
					if ( $enumRevMode ) {
						$this->setContinueEnumParameter( 'continue',
							$row->rev_timestamp . '|' . intval( $row->rev_id ) );
					} elseif ( $revCount > 0 ) {
						$this->setContinueEnumParameter( 'continue', intval( $row->rev_id ) );
					} else {
						$this->setContinueEnumParameter( 'continue', intval( $row->rev_page ) .
							'|' . intval( $row->rev_id ) );
					}
					break;
				}
			}
		}

		if ( $resultPageSet !== null ) {
			$resultPageSet->populateFromRevisionIDs( $generated );
		}
	}

	public function getCacheMode( $params ) {
		if ( isset( $params['token'] ) ) {
			return 'private';
		}
		return parent::getCacheMode( $params );
	}

	public function getAllowedParams() {
		$ret = parent::getAllowedParams() + [
			'startid' => [
				ApiBase::PARAM_TYPE => 'integer',
				ApiBase::PARAM_HELP_MSG_INFO => [ [ 'singlepageonly' ] ],
			],
			'endid' => [
				ApiBase::PARAM_TYPE => 'integer',
				ApiBase::PARAM_HELP_MSG_INFO => [ [ 'singlepageonly' ] ],
			],
			'start' => [
				ApiBase::PARAM_TYPE => 'timestamp',
				ApiBase::PARAM_HELP_MSG_INFO => [ [ 'singlepageonly' ] ],
			],
			'end' => [
				ApiBase::PARAM_TYPE => 'timestamp',
				ApiBase::PARAM_HELP_MSG_INFO => [ [ 'singlepageonly' ] ],
			],
			'dir' => [
				ApiBase::PARAM_DFLT => 'older',
				ApiBase::PARAM_TYPE => [
					'newer',
					'older'
				],
				ApiBase::PARAM_HELP_MSG => 'api-help-param-direction',
				ApiBase::PARAM_HELP_MSG_INFO => [ [ 'singlepageonly' ] ],
			],
			'user' => [
				ApiBase::PARAM_TYPE => 'user',
				ApiBase::PARAM_HELP_MSG_INFO => [ [ 'singlepageonly' ] ],
			],
			'excludeuser' => [
				ApiBase::PARAM_TYPE => 'user',
				ApiBase::PARAM_HELP_MSG_INFO => [ [ 'singlepageonly' ] ],
			],
			'tag' => null,
			'token' => [
				ApiBase::PARAM_DEPRECATED => true,
				ApiBase::PARAM_TYPE => array_keys( $this->getTokenFunctions() ),
				ApiBase::PARAM_ISMULTI => true
			],
			'continue' => [
				ApiBase::PARAM_HELP_MSG => 'api-help-param-continue',
			],
		];

		$ret['limit'][ApiBase::PARAM_HELP_MSG_INFO] = [ [ 'singlepageonly' ] ];

		return $ret;
	}

	protected function getExamplesMessages() {
		return [
			'action=query&prop=revisions&titles=API|Main%20Page&' .
				'rvprop=timestamp|user|comment|content'
				=> 'apihelp-query+revisions-example-content',
			'action=query&prop=revisions&titles=Main%20Page&rvlimit=5&' .
				'rvprop=timestamp|user|comment'
				=> 'apihelp-query+revisions-example-last5',
			'action=query&prop=revisions&titles=Main%20Page&rvlimit=5&' .
				'rvprop=timestamp|user|comment&rvdir=newer'
				=> 'apihelp-query+revisions-example-first5',
			'action=query&prop=revisions&titles=Main%20Page&rvlimit=5&' .
				'rvprop=timestamp|user|comment&rvdir=newer&rvstart=2006-05-01T00:00:00Z'
				=> 'apihelp-query+revisions-example-first5-after',
			'action=query&prop=revisions&titles=Main%20Page&rvlimit=5&' .
				'rvprop=timestamp|user|comment&rvexcludeuser=127.0.0.1'
				=> 'apihelp-query+revisions-example-first5-not-localhost',
			'action=query&prop=revisions&titles=Main%20Page&rvlimit=5&' .
				'rvprop=timestamp|user|comment&rvuser=MediaWiki%20default'
				=> 'apihelp-query+revisions-example-first5-user',
		];
	}

	public function getHelpUrls() {
		return 'https://www.mediawiki.org/wiki/API:Revisions';
	}
}


1		<?php
2		/**
3		*
4		*
5		* Created on Sep 7, 2006
6		*
7		* Copyright © 2006 Yuri Astrakhan "<Firstname><Lastname>@gmail.com"
8		*
9		* This program is free software; you can redistribute it and/or modify
10		* it under the terms of the GNU General Public License as published by
11		* the Free Software Foundation; either version 2 of the License, or
12		* (at your option) any later version.
13		*
14		* This program is distributed in the hope that it will be useful,
15		* but WITHOUT ANY WARRANTY; without even the implied warranty of
16		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17		* GNU General Public License for more details.
18		*
19		* You should have received a copy of the GNU General Public License along
20		* with this program; if not, write to the Free Software Foundation, Inc.,
21		* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
22		* http://www.gnu.org/copyleft/gpl.html
23		*
24		* @file
25		*/
26
27		/**
28		* A query action to enumerate revisions of a given page, or show top revisions
29		* of multiple pages. Various pieces of information may be shown - flags,
30		* comments, and the actual wiki markup of the rev. In the enumeration mode,
31		* ranges of revisions may be requested and filtered.
32		*
33		* @ingroup API
34		*/
35		class ApiQueryRevisions extends ApiQueryRevisionsBase {
36
37		private $token = null;
38
39		public function __construct( ApiQuery $query, $moduleName ) {
40		parent::__construct( $query, $moduleName, 'rv' );
41		}
42
43		private $tokenFunctions;
44
45		/** @deprecated since 1.24 */
46	View Code Duplication	protected function getTokenFunctions() {
47		// tokenname => function
48		// function prototype is func($pageid, $title, $rev)
49		// should return token or false
50
51		// Don't call the hooks twice
52		if ( isset( $this->tokenFunctions ) ) {
53		return $this->tokenFunctions;
54		}
55
56		// If we're in a mode that breaks the same-origin policy, no tokens can
57		// be obtained
58		if ( $this->lacksSameOriginSecurity() ) {
59		return [];
60		}
61
62		$this->tokenFunctions = [
63		'rollback' => [ 'ApiQueryRevisions', 'getRollbackToken' ]
64		];
65		Hooks::run( 'APIQueryRevisionsTokens', [ &$this->tokenFunctions ] );
66
67		return $this->tokenFunctions;
68		}
69
70		/**
71		* @deprecated since 1.24
72		* @param int $pageid
73		* @param Title $title
74		* @param Revision $rev
75		* @return bool\|string
76		*/
77		public static function getRollbackToken( $pageid, $title, $rev ) {
78		global $wgUser;
79		if ( !$wgUser->isAllowed( 'rollback' ) ) {
80		return false;
81		}
82
83		return $wgUser->getEditToken( 'rollback' );
84		}
85
86		protected function run( ApiPageSet $resultPageSet = null ) {
87		$params = $this->extractRequestParams( false );
88
89		// If any of those parameters are used, work in 'enumeration' mode.
90		// Enum mode can only be used when exactly one page is provided.
91		// Enumerating revisions on multiple pages make it extremely
92		// difficult to manage continuations and require additional SQL indexes
93		$enumRevMode = ( $params['user'] !== null \|\| $params['excludeuser'] !== null \|\|
94		$params['limit'] !== null \|\| $params['startid'] !== null \|\|
95		$params['endid'] !== null \|\| $params['dir'] === 'newer' \|\|
96		$params['start'] !== null \|\| $params['end'] !== null );
97
98		$pageSet = $this->getPageSet();
99		$pageCount = $pageSet->getGoodTitleCount();
100		$revCount = $pageSet->getRevisionCount();
101
102		// Optimization -- nothing to do
103		if ( $revCount === 0 && $pageCount === 0 ) {
104		// Nothing to do
105		return;
106		}
107		if ( $revCount > 0 && count( $pageSet->getLiveRevisionIDs() ) === 0 ) {
108		// We're in revisions mode but all given revisions are deleted
109		return;
110		}
111
112		if ( $revCount > 0 && $enumRevMode ) {
113		$this->dieUsage(
114		'The revids= parameter may not be used with the list options ' .
115		'(limit, startid, endid, dirNewer, start, end).',
116		'revids'
117		);
118		}
119
120		if ( $pageCount > 1 && $enumRevMode ) {
121		$this->dieUsage(
122		'titles, pageids or a generator was used to supply multiple pages, ' .
123		'but the limit, startid, endid, dirNewer, user, excludeuser, start ' .
124		'and end parameters may only be used on a single page.',
125		'multpages'
126		);
127		}
128
129		// In non-enum mode, rvlimit can't be directly used. Use the maximum
130		// allowed value.
131		if ( !$enumRevMode ) {
132		$this->setParsedLimit = false;
133		$params['limit'] = 'max';
134		}
135
136		$db = $this->getDB();
137		$this->addTables( [ 'revision', 'page' ] );
138		$this->addJoinConds(
139		[ 'page' => [ 'INNER JOIN', [ 'page_id = rev_page' ] ] ]
140		);
141
142		if ( $resultPageSet === null ) {
143		$this->parseParameters( $params );
144		$this->token = $params['token'];
145		$this->addFields( Revision::selectFields() );
146		if ( $this->token !== null \|\| $pageCount > 0 ) {
147		$this->addFields( Revision::selectPageFields() );
148		}
149		} else {
150		$this->limit = $this->getParameter( 'limit' ) ?: 10;
151		$this->addFields( [ 'rev_id', 'rev_timestamp', 'rev_page' ] );
152		}
153
154	View Code Duplication	if ( $this->fld_tags ) {
155		$this->addTables( 'tag_summary' );
156		$this->addJoinConds(
157		[ 'tag_summary' => [ 'LEFT JOIN', [ 'rev_id=ts_rev_id' ] ] ]
158		);
159		$this->addFields( 'ts_tags' );
160		}
161
162	View Code Duplication	if ( $params['tag'] !== null ) {
163		$this->addTables( 'change_tag' );
164		$this->addJoinConds(
165		[ 'change_tag' => [ 'INNER JOIN', [ 'rev_id=ct_rev_id' ] ] ]
166		);
167		$this->addWhereFld( 'ct_tag', $params['tag'] );
168		}
169
170		if ( $this->fetchContent ) {
171		// For each page we will request, the user must have read rights for that page
172		$user = $this->getUser();
173		/** @var $title Title */
174		foreach ( $pageSet->getGoodTitles() as $title ) {
175		if ( !$title->userCan( 'read', $user ) ) {
176		$this->dieUsage(
177		'The current user is not allowed to read ' . $title->getPrefixedText(),
178		'accessdenied' );
179		}
180		}
181
182		$this->addTables( 'text' );
183		$this->addJoinConds(
184		[ 'text' => [ 'INNER JOIN', [ 'rev_text_id=old_id' ] ] ]
185		);
186		$this->addFields( 'old_id' );
187		$this->addFields( Revision::selectTextFields() );
188		}
189
190		// add user name, if needed
191		if ( $this->fld_user ) {
192		$this->addTables( 'user' );
193		$this->addJoinConds( [ 'user' => Revision::userJoinCond() ] );
194		$this->addFields( Revision::selectUserFields() );
195		}
196
197		if ( $enumRevMode ) {
198		// Indexes targeted:
199		// page_timestamp if we don't have rvuser
200		// page_user_timestamp if we have a logged-in rvuser
201		// page_timestamp or usertext_timestamp if we have an IP rvuser
202
203		// This is mostly to prevent parameter errors (and optimize SQL?)
204		if ( $params['startid'] !== null && $params['start'] !== null ) {
205		$this->dieUsage( 'start and startid cannot be used together', 'badparams' );
206		}
207
208		if ( $params['endid'] !== null && $params['end'] !== null ) {
209		$this->dieUsage( 'end and endid cannot be used together', 'badparams' );
210		}
211
212		if ( $params['user'] !== null && $params['excludeuser'] !== null ) {
213		$this->dieUsage( 'user and excludeuser cannot be used together', 'badparams' );
214		}
215
216		if ( $params['continue'] !== null ) {
217		$cont = explode( '\|', $params['continue'] );
218		$this->dieContinueUsageIf( count( $cont ) != 2 );
219		$op = ( $params['dir'] === 'newer' ? '>' : '<' );
220		$continueTimestamp = $db->addQuotes( $db->timestamp( $cont[0] ) );
221		$continueId = (int)$cont[1];
222		$this->dieContinueUsageIf( $continueId != $cont[1] );
223		$this->addWhere( "rev_timestamp $op $continueTimestamp OR " .
224		"(rev_timestamp = $continueTimestamp AND " .
225		"rev_id $op= $continueId)"
226		);
227		}
228
229		$this->addTimestampWhereRange( 'rev_timestamp', $params['dir'],
230		$params['start'], $params['end'] );
231		$this->addWhereRange( 'rev_id', $params['dir'],
232		$params['startid'], $params['endid'] );
233
234		// There is only one ID, use it
235		$ids = array_keys( $pageSet->getGoodTitles() );
236		$this->addWhereFld( 'rev_page', reset( $ids ) );
237
238		if ( $params['user'] !== null ) {
239		$user = User::newFromName( $params['user'] );
240		if ( $user && $user->getId() > 0 ) {
241		$this->addWhereFld( 'rev_user', $user->getId() );
242		} else {
243		$this->addWhereFld( 'rev_user_text', $params['user'] );
244		}
245	View Code Duplication	} elseif ( $params['excludeuser'] !== null ) {
246		$user = User::newFromName( $params['excludeuser'] );
247		if ( $user && $user->getId() > 0 ) {
248		$this->addWhere( 'rev_user != ' . $user->getId() );
249		} else {
250		$this->addWhere( 'rev_user_text != ' .
251		$db->addQuotes( $params['excludeuser'] ) );
252		}
253		}
254	View Code Duplication	if ( $params['user'] !== null \|\| $params['excludeuser'] !== null ) {
255		// Paranoia: avoid brute force searches (bug 17342)
256		if ( !$this->getUser()->isAllowed( 'deletedhistory' ) ) {
257		$bitmask = Revision::DELETED_USER;
258		} elseif ( !$this->getUser()->isAllowedAny( 'suppressrevision', 'viewsuppressed' ) ) {
259		$bitmask = Revision::DELETED_USER \| Revision::DELETED_RESTRICTED;
260		} else {
261		$bitmask = 0;
262		}
263		if ( $bitmask ) {
264		$this->addWhere( $db->bitAnd( 'rev_deleted', $bitmask ) . " != $bitmask" );
265		}
266		}
267		} elseif ( $revCount > 0 ) {
268		// Always targets the PRIMARY index
269
270		$revs = $pageSet->getLiveRevisionIDs();
271
272		// Get all revision IDs
273		$this->addWhereFld( 'rev_id', array_keys( $revs ) );
274
275		if ( $params['continue'] !== null ) {
276		$this->addWhere( 'rev_id >= ' . intval( $params['continue'] ) );
277		}
278		$this->addOption( 'ORDER BY', 'rev_id' );
279		} elseif ( $pageCount > 0 ) {
280		// Always targets the rev_page_id index
281
282		$titles = $pageSet->getGoodTitles();
283
284		// When working in multi-page non-enumeration mode,
285		// limit to the latest revision only
286		$this->addWhere( 'page_latest=rev_id' );
287
288		// Get all page IDs
289		$this->addWhereFld( 'page_id', array_keys( $titles ) );
290		// Every time someone relies on equality propagation, god kills a kitten :)
291		$this->addWhereFld( 'rev_page', array_keys( $titles ) );
292
293		if ( $params['continue'] !== null ) {
294		$cont = explode( '\|', $params['continue'] );
295		$this->dieContinueUsageIf( count( $cont ) != 2 );
296		$pageid = intval( $cont[0] );
297		$revid = intval( $cont[1] );
298		$this->addWhere(
299		"rev_page > $pageid OR " .
300		"(rev_page = $pageid AND " .
301		"rev_id >= $revid)"
302		);
303		}
304		$this->addOption( 'ORDER BY', [
305		'rev_page',
306		'rev_id'
307		] );
308		} else {
309		ApiBase::dieDebug( __METHOD__, 'param validation?' );
310		}
311
312		$this->addOption( 'LIMIT', $this->limit + 1 );
313
314		$count = 0;
315		$generated = [];
316		$hookData = [];
317		$res = $this->select( __METHOD__, [], $hookData );
318
319		foreach ( $res as $row ) {
320	View Code Duplication	if ( ++$count > $this->limit ) {
321		// We've reached the one extra which shows that there are
322		// additional pages to be had. Stop here...
323		if ( $enumRevMode ) {
324		$this->setContinueEnumParameter( 'continue',
325		$row->rev_timestamp . '\|' . intval( $row->rev_id ) );
326		} elseif ( $revCount > 0 ) {
327		$this->setContinueEnumParameter( 'continue', intval( $row->rev_id ) );
328		} else {
329		$this->setContinueEnumParameter( 'continue', intval( $row->rev_page ) .
330		'\|' . intval( $row->rev_id ) );
331		}
332		break;
333		}
334
335		if ( $resultPageSet !== null ) {
336		$generated[] = $row->rev_id;
337		} else {
338		$revision = new Revision( $row );
		0 ignored issues – show Bug introduced 2016-09-19 18:26 UTC by Report Bug Copy Issue Report It seems like `$row` defined by `$row` on line `319` can be `null`; however, `Revision::__construct()` does not accept `null`, maybe add an additional type check? Unless you are absolutely sure that the expression can never be null because of other conditions, we strongly recommend to add an additional type check to your code: /** @return stdClass\|null */ function mayReturnNull() { } function doesNotAcceptNull(stdClass $x) { } // With potential error. function withoutCheck() { $x = mayReturnNull(); doesNotAcceptNull($x); // Potential error here. } // Safe - Alternative 1 function withCheck1() { $x = mayReturnNull(); if ( ! $x instanceof stdClass) { throw new \LogicException('$x must be defined.'); } doesNotAcceptNull($x); } // Safe - Alternative 2 function withCheck2() { $x = mayReturnNull(); if ($x instanceof stdClass) { doesNotAcceptNull($x); } } Loading history...
339		$rev = $this->extractRevisionInfo( $revision, $row );
		0 ignored issues – show Bug introduced 2016-09-19 18:26 UTC by Report Bug Copy Issue Report It seems like `$row` defined by `$row` on line `319` can be `null`; however, `ApiQueryRevisionsBase::extractRevisionInfo()` does not accept `null`, maybe add an additional type check? Unless you are absolutely sure that the expression can never be null because of other conditions, we strongly recommend to add an additional type check to your code: /** @return stdClass\|null */ function mayReturnNull() { } function doesNotAcceptNull(stdClass $x) { } // With potential error. function withoutCheck() { $x = mayReturnNull(); doesNotAcceptNull($x); // Potential error here. } // Safe - Alternative 1 function withCheck1() { $x = mayReturnNull(); if ( ! $x instanceof stdClass) { throw new \LogicException('$x must be defined.'); } doesNotAcceptNull($x); } // Safe - Alternative 2 function withCheck2() { $x = mayReturnNull(); if ($x instanceof stdClass) { doesNotAcceptNull($x); } } Loading history...
340
341		if ( $this->token !== null ) {
342		$title = $revision->getTitle();
343		$tokenFunctions = $this->getTokenFunctions();
344		foreach ( $this->token as $t ) {
345		$val = call_user_func( $tokenFunctions[$t], $title->getArticleID(), $title, $revision );
346		if ( $val === false ) {
347		$this->setWarning( "Action '$t' is not allowed for the current user" );
348		} else {
349		$rev[$t . 'token'] = $val;
350		}
351		}
352		}
353
354		$fit = $this->processRow( $row, $rev, $hookData ) &&
		0 ignored issues – show Bug introduced 2016-10-07 17:33 UTC by Report Bug Copy Issue Report It seems like `$row` defined by `$row` on line `319` can be `null`; however, `ApiQueryBase::processRow()` does not accept `null`, maybe add an additional type check? Unless you are absolutely sure that the expression can never be null because of other conditions, we strongly recommend to add an additional type check to your code: /** @return stdClass\|null / function mayReturnNull() { } function doesNotAcceptNull(stdClass $x) { } // With potential error. function withoutCheck() { $x = mayReturnNull(); doesNotAcceptNull($x); // Potential error here. } // Safe - Alternative 1 function withCheck1() { $x = mayReturnNull(); if ( ! $x instanceof stdClass) { throw new \LogicException('$x must be defined.'); } doesNotAcceptNull($x); } // Safe - Alternative 2 function withCheck2() { $x = mayReturnNull(); if ($x instanceof stdClass) { doesNotAcceptNull($x); } } Loading history... Bug introduced 2016-10-07 17:33 UTC by Report Bug Copy Issue Report It seems like `$hookData` can also be of type `null`; however, `ApiQueryBase::processRow()` does only seem to accept `array`, maybe add an additional type check? If a method or function can return multiple different values and unless you are sure that you only can receive a single value in this context, we recommend to add an additional type check: /* * @return array\|string */ function returnsDifferentValues($x) { if ($x) { return 'foo'; } return array(); } $x = returnsDifferentValues($y); if (is_array($x)) { // $x is an array. } If this a common case that PHP Analyzer should handle natively, please let us know by opening an issue. Loading history...
355		$this->addPageSubItem( $row->rev_page, $rev, 'rev' );
356	View Code Duplication	if ( !$fit ) {
357		if ( $enumRevMode ) {
358		$this->setContinueEnumParameter( 'continue',
359		$row->rev_timestamp . '\|' . intval( $row->rev_id ) );
360		} elseif ( $revCount > 0 ) {
361		$this->setContinueEnumParameter( 'continue', intval( $row->rev_id ) );
362		} else {
363		$this->setContinueEnumParameter( 'continue', intval( $row->rev_page ) .
364		'\|' . intval( $row->rev_id ) );
365		}
366		break;
367		}
368		}
369		}
370
371		if ( $resultPageSet !== null ) {
372		$resultPageSet->populateFromRevisionIDs( $generated );
373		}
374		}
375
376		public function getCacheMode( $params ) {
377		if ( isset( $params['token'] ) ) {
378		return 'private';
379		}
380		return parent::getCacheMode( $params );
381		}
382
383		public function getAllowedParams() {
384		$ret = parent::getAllowedParams() + [
385		'startid' => [
386		ApiBase::PARAM_TYPE => 'integer',
387		ApiBase::PARAM_HELP_MSG_INFO => [ [ 'singlepageonly' ] ],
388		],
389		'endid' => [
390		ApiBase::PARAM_TYPE => 'integer',
391		ApiBase::PARAM_HELP_MSG_INFO => [ [ 'singlepageonly' ] ],
392		],
393		'start' => [
394		ApiBase::PARAM_TYPE => 'timestamp',
395		ApiBase::PARAM_HELP_MSG_INFO => [ [ 'singlepageonly' ] ],
396		],
397		'end' => [
398		ApiBase::PARAM_TYPE => 'timestamp',
399		ApiBase::PARAM_HELP_MSG_INFO => [ [ 'singlepageonly' ] ],
400		],
401		'dir' => [
402		ApiBase::PARAM_DFLT => 'older',
403		ApiBase::PARAM_TYPE => [
404		'newer',
405		'older'
406		],
407		ApiBase::PARAM_HELP_MSG => 'api-help-param-direction',
408		ApiBase::PARAM_HELP_MSG_INFO => [ [ 'singlepageonly' ] ],
409		],
410		'user' => [
411		ApiBase::PARAM_TYPE => 'user',
412		ApiBase::PARAM_HELP_MSG_INFO => [ [ 'singlepageonly' ] ],
413		],
414		'excludeuser' => [
415		ApiBase::PARAM_TYPE => 'user',
416		ApiBase::PARAM_HELP_MSG_INFO => [ [ 'singlepageonly' ] ],
417		],
418		'tag' => null,
419		'token' => [
420		ApiBase::PARAM_DEPRECATED => true,
421		ApiBase::PARAM_TYPE => array_keys( $this->getTokenFunctions() ),
422		ApiBase::PARAM_ISMULTI => true
423		],
424		'continue' => [
425		ApiBase::PARAM_HELP_MSG => 'api-help-param-continue',
426		],
427		];
428
429		$ret['limit'][ApiBase::PARAM_HELP_MSG_INFO] = [ [ 'singlepageonly' ] ];
430
431		return $ret;
432		}
433
434		protected function getExamplesMessages() {
435		return [
436		'action=query&prop=revisions&titles=API\|Main%20Page&' .
437		'rvprop=timestamp\|user\|comment\|content'
438		=> 'apihelp-query+revisions-example-content',
439		'action=query&prop=revisions&titles=Main%20Page&rvlimit=5&' .
440		'rvprop=timestamp\|user\|comment'
441		=> 'apihelp-query+revisions-example-last5',
442		'action=query&prop=revisions&titles=Main%20Page&rvlimit=5&' .
443		'rvprop=timestamp\|user\|comment&rvdir=newer'
444		=> 'apihelp-query+revisions-example-first5',
445		'action=query&prop=revisions&titles=Main%20Page&rvlimit=5&' .
446		'rvprop=timestamp\|user\|comment&rvdir=newer&rvstart=2006-05-01T00:00:00Z'
447		=> 'apihelp-query+revisions-example-first5-after',
448		'action=query&prop=revisions&titles=Main%20Page&rvlimit=5&' .
449		'rvprop=timestamp\|user\|comment&rvexcludeuser=127.0.0.1'
450		=> 'apihelp-query+revisions-example-first5-not-localhost',
451		'action=query&prop=revisions&titles=Main%20Page&rvlimit=5&' .
452		'rvprop=timestamp\|user\|comment&rvuser=MediaWiki%20default'
453		=> 'apihelp-query+revisions-example-first5-user',
454		];
455		}
456
457		public function getHelpUrls() {
458		return 'https://www.mediawiki.org/wiki/API:Revisions';
459		}
460		}
461

wikimedia / mediawiki

ApiQueryRevisions::getRollbackToken() A last analyzed 2016-11-13 17:42 UTC

Complexity

Size

Duplication

Importance

Duplication Side-by-Side

Filter issues like

ApiQueryRevisions::getRollbackToken() A
last analyzed 2016-11-13 17:42 UTC