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

ApiQueryAllDeletedRevisions::run() F
last analyzed 2016-11-13 17:42 UTC

↳ Parent: ApiQueryAllDeletedRevisions

Complexity

Conditions	69
Paths	> 20000

Size

Total Lines	351
Code Lines	238

Duplication

Lines	125
Ratio	35.61 %

Importance

Changes

Metric	Value
cc	69
eloc	238
c	0
b	0
f	0
nc	4294967295
nop	1
dl	125
loc	351
rs	2

How to fix Long Method Complexity

<?php
/**
 * Created on Oct 3, 2014
 *
 * Copyright © 2014 Brad Jorsch "[email protected]"
 *
 * Heavily based on ApiQueryDeletedrevs,
 * Copyright © 2007 Roan Kattouw "<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
 */

/**
 * Query module to enumerate all deleted revisions.
 *
 * @ingroup API
 */
class ApiQueryAllDeletedRevisions extends ApiQueryRevisionsBase {

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

	/**
	 * @param ApiPageSet $resultPageSet
	 * @return void
	 */
	protected function run( ApiPageSet $resultPageSet = null ) {
		$user = $this->getUser();
		// Before doing anything at all, let's check permissions
		if ( !$user->isAllowed( 'deletedhistory' ) ) {
			$this->dieUsage(
				'You don\'t have permission to view deleted revision information',
				'permissiondenied'
			);
		}

		$db = $this->getDB();
		$params = $this->extractRequestParams( false );

		$result = $this->getResult();

		// If the user wants no namespaces, they get no pages.
		if ( $params['namespace'] === [] ) {
			if ( $resultPageSet === null ) {
				$result->addValue( 'query', $this->getModuleName(), [] );
			}
			return;
		}

		// This module operates in two modes:
		// 'user': List deleted revs by a certain user
		// 'all': List all deleted revs in NS
		$mode = 'all';
		if ( !is_null( $params['user'] ) ) {
			$mode = 'user';
		}

		if ( $mode == 'user' ) {
			foreach ( [ 'from', 'to', 'prefix', 'excludeuser' ] as $param ) {
				if ( !is_null( $params[$param] ) ) {
					$p = $this->getModulePrefix();
					$this->dieUsage( "The '{$p}{$param}' parameter cannot be used with '{$p}user'",
						'badparams' );
				}
			}
		} else {
			foreach ( [ 'start', 'end' ] as $param ) {
				if ( !is_null( $params[$param] ) ) {
					$p = $this->getModulePrefix();
					$this->dieUsage( "The '{$p}{$param}' parameter may only be used with '{$p}user'",
						'badparams' );
				}
			}
		}

		// If we're generating titles only, we can use DISTINCT for a better
		// query. But we can't do that in 'user' mode (wrong index), and we can
		// only do it when sorting ASC (because MySQL apparently can't use an
		// index backwards for grouping even though it can for ORDER BY, WTF?)
		$dir = $params['dir'];
		$optimizeGenerateTitles = false;
		if ( $mode === 'all' && $params['generatetitles'] && $resultPageSet !== null ) {
			if ( $dir === 'newer' ) {
				$optimizeGenerateTitles = true;
			} else {
				$p = $this->getModulePrefix();
				$this->setWarning( "For better performance when generating titles, set {$p}dir=newer" );
			}
		}

		$this->addTables( 'archive' );
		if ( $resultPageSet === null ) {
			$this->parseParameters( $params );
			$this->addFields( Revision::selectArchiveFields() );
			$this->addFields( [ 'ar_title', 'ar_namespace' ] );
		} else {
			$this->limit = $this->getParameter( 'limit' ) ?: 10;
			$this->addFields( [ 'ar_title', 'ar_namespace' ] );
			if ( $optimizeGenerateTitles ) {
				$this->addOption( 'DISTINCT' );
			} else {
				$this->addFields( [ 'ar_timestamp', 'ar_rev_id', 'ar_id' ] );
			}
		}

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

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

		if ( $this->fetchContent ) {
			// Modern MediaWiki has the content for deleted revs in the 'text'
			// table using fields old_text and old_flags. But revisions deleted
			// pre-1.5 store the content in the 'archive' table directly using
			// fields ar_text and ar_flags, and no corresponding 'text' row. So
			// we have to LEFT JOIN and fetch all four fields.
			$this->addTables( 'text' );
			$this->addJoinConds(
				[ 'text' => [ 'LEFT JOIN', [ 'ar_text_id=old_id' ] ] ]
			);
			$this->addFields( [ 'ar_text', 'ar_flags', 'old_text', 'old_flags' ] );

			// This also means stricter restrictions
			if ( !$user->isAllowedAny( 'undelete', 'deletedtext' ) ) {
				$this->dieUsage(
					'You don\'t have permission to view deleted revision content',
					'permissiondenied'
				);
			}
		}

		$miser_ns = null;

		if ( $mode == 'all' ) {
			if ( $params['namespace'] !== null ) {
				$namespaces = $params['namespace'];
			} else {
				$namespaces = MWNamespace::getValidNamespaces();
			}
			$this->addWhereFld( 'ar_namespace', $namespaces );

			// For from/to/prefix, we have to consider the potential
			// transformations of the title in all specified namespaces.
			// Generally there will be only one transformation, but wikis with
			// some namespaces case-sensitive could have two.
			if ( $params['from'] !== null || $params['to'] !== null ) {
				$isDirNewer = ( $dir === 'newer' );
				$after = ( $isDirNewer ? '>=' : '<=' );
				$before = ( $isDirNewer ? '<=' : '>=' );
				$where = [];
				foreach ( $namespaces as $ns ) {
					$w = [];
					if ( $params['from'] !== null ) {
						$w[] = 'ar_title' . $after .
							$db->addQuotes( $this->titlePartToKey( $params['from'], $ns ) );
					}
					if ( $params['to'] !== null ) {
						$w[] = 'ar_title' . $before .
							$db->addQuotes( $this->titlePartToKey( $params['to'], $ns ) );
					}
					$w = $db->makeList( $w, LIST_AND );
					$where[$w][] = $ns;
				}
				if ( count( $where ) == 1 ) {
					$where = key( $where );
					$this->addWhere( $where );
				} else {
					$where2 = [];
					foreach ( $where as $w => $ns ) {
						$where2[] = $db->makeList( [ $w, 'ar_namespace' => $ns ], LIST_AND );
					}
					$this->addWhere( $db->makeList( $where2, LIST_OR ) );
				}
			}

			if ( isset( $params['prefix'] ) ) {
				$where = [];
				foreach ( $namespaces as $ns ) {
					$w = 'ar_title' . $db->buildLike(
						$this->titlePartToKey( $params['prefix'], $ns ),
						$db->anyString() );
					$where[$w][] = $ns;
				}
				if ( count( $where ) == 1 ) {
					$where = key( $where );
					$this->addWhere( $where );
				} else {
					$where2 = [];
					foreach ( $where as $w => $ns ) {
						$where2[] = $db->makeList( [ $w, 'ar_namespace' => $ns ], LIST_AND );
					}
					$this->addWhere( $db->makeList( $where2, LIST_OR ) );
				}
			}
		} else {
			if ( $this->getConfig()->get( 'MiserMode' ) ) {
				$miser_ns = $params['namespace'];
			} else {
				$this->addWhereFld( 'ar_namespace', $params['namespace'] );
			}
			$this->addTimestampWhereRange( 'ar_timestamp', $dir, $params['start'], $params['end'] );
		}

		if ( !is_null( $params['user'] ) ) {
			$this->addWhereFld( 'ar_user_text', $params['user'] );
		} elseif ( !is_null( $params['excludeuser'] ) ) {
			$this->addWhere( 'ar_user_text != ' .
				$db->addQuotes( $params['excludeuser'] ) );
		}

		if ( !is_null( $params['user'] ) || !is_null( $params['excludeuser'] ) ) {
			// Paranoia: avoid brute force searches (bug 17342)
			// (shouldn't be able to get here without 'deletedhistory', but
			// check it again just in case)
			if ( !$user->isAllowed( 'deletedhistory' ) ) {
				$bitmask = Revision::DELETED_USER;
			} elseif ( !$user->isAllowedAny( 'suppressrevision', 'viewsuppressed' ) ) {
				$bitmask = Revision::DELETED_USER | Revision::DELETED_RESTRICTED;
			} else {
				$bitmask = 0;
			}
			if ( $bitmask ) {
				$this->addWhere( $db->bitAnd( 'ar_deleted', $bitmask ) . " != $bitmask" );
			}
		}

		if ( !is_null( $params['continue'] ) ) {
			$cont = explode( '|', $params['continue'] );
			$op = ( $dir == 'newer' ? '>' : '<' );
			if ( $optimizeGenerateTitles ) {
				$this->dieContinueUsageIf( count( $cont ) != 2 );
				$ns = intval( $cont[0] );
				$this->dieContinueUsageIf( strval( $ns ) !== $cont[0] );
				$title = $db->addQuotes( $cont[1] );
				$this->addWhere( "ar_namespace $op $ns OR " .
					"(ar_namespace = $ns AND ar_title $op= $title)" );
			} elseif ( $mode == 'all' ) {
				$this->dieContinueUsageIf( count( $cont ) != 4 );
				$ns = intval( $cont[0] );
				$this->dieContinueUsageIf( strval( $ns ) !== $cont[0] );
				$title = $db->addQuotes( $cont[1] );
				$ts = $db->addQuotes( $db->timestamp( $cont[2] ) );
				$ar_id = (int)$cont[3];
				$this->dieContinueUsageIf( strval( $ar_id ) !== $cont[3] );
				$this->addWhere( "ar_namespace $op $ns OR " .
					"(ar_namespace = $ns AND " .
					"(ar_title $op $title OR " .
					"(ar_title = $title AND " .
					"(ar_timestamp $op $ts OR " .
					"(ar_timestamp = $ts AND " .
					"ar_id $op= $ar_id)))))" );
			} else {
				$this->dieContinueUsageIf( count( $cont ) != 2 );
				$ts = $db->addQuotes( $db->timestamp( $cont[0] ) );
				$ar_id = (int)$cont[1];
				$this->dieContinueUsageIf( strval( $ar_id ) !== $cont[1] );
				$this->addWhere( "ar_timestamp $op $ts OR " .
					"(ar_timestamp = $ts AND " .
					"ar_id $op= $ar_id)" );
			}
		}

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

		$sort = ( $dir == 'newer' ? '' : ' DESC' );
		$orderby = [];
		if ( $optimizeGenerateTitles ) {
			// Targeting index name_title_timestamp
			if ( $params['namespace'] === null || count( array_unique( $params['namespace'] ) ) > 1 ) {
				$orderby[] = "ar_namespace $sort";
			}
			$orderby[] = "ar_title $sort";
		} elseif ( $mode == 'all' ) {
			// Targeting index name_title_timestamp
			if ( $params['namespace'] === null || count( array_unique( $params['namespace'] ) ) > 1 ) {
				$orderby[] = "ar_namespace $sort";
			}
			$orderby[] = "ar_title $sort";
			$orderby[] = "ar_timestamp $sort";
			$orderby[] = "ar_id $sort";
		} else {
			// Targeting index usertext_timestamp
			// 'user' is always constant.
			$orderby[] = "ar_timestamp $sort";
			$orderby[] = "ar_id $sort";
		}
		$this->addOption( 'ORDER BY', $orderby );

		$res = $this->select( __METHOD__ );
		$pageMap = []; // Maps ns&title to array index
		$count = 0;
		$nextIndex = 0;
		$generated = [];
		foreach ( $res as $row ) {
			if ( ++$count > $this->limit ) {
				// We've had enough
				if ( $optimizeGenerateTitles ) {
					$this->setContinueEnumParameter( 'continue', "$row->ar_namespace|$row->ar_title" );
				} elseif ( $mode == 'all' ) {
					$this->setContinueEnumParameter( 'continue',
						"$row->ar_namespace|$row->ar_title|$row->ar_timestamp|$row->ar_id"
					);
				} else {
					$this->setContinueEnumParameter( 'continue', "$row->ar_timestamp|$row->ar_id" );
				}
				break;
			}

			// Miser mode namespace check
			if ( $miser_ns !== null && !in_array( $row->ar_namespace, $miser_ns ) ) {
				continue;
			}

			if ( $resultPageSet !== null ) {
				if ( $params['generatetitles'] ) {
					$key = "{$row->ar_namespace}:{$row->ar_title}";
					if ( !isset( $generated[$key] ) ) {
						$generated[$key] = Title::makeTitle( $row->ar_namespace, $row->ar_title );
					}
				} else {
					$generated[] = $row->ar_rev_id;
				}
			} else {
				$revision = Revision::newFromArchiveRow( $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 ( !isset( $pageMap[$row->ar_namespace][$row->ar_title] ) ) {
					$index = $nextIndex++;
					$pageMap[$row->ar_namespace][$row->ar_title] = $index;
					$title = $revision->getTitle();
					$a = [
						'pageid' => $title->getArticleID(),
						'revisions' => [ $rev ],
					];
					ApiResult::setIndexedTagName( $a['revisions'], 'rev' );
					ApiQueryBase::addTitleInfo( $a, $title );
/** @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);
    }
}
					$fit = $result->addValue( [ 'query', $this->getModuleName() ], $index, $a );
				} else {
					$index = $pageMap[$row->ar_namespace][$row->ar_title];
					$fit = $result->addValue(
						[ 'query', $this->getModuleName(), $index, 'revisions' ],
						null, $rev );
				}
				if ( !$fit ) {
					if ( $mode == 'all' ) {
						$this->setContinueEnumParameter( 'continue',
							"$row->ar_namespace|$row->ar_title|$row->ar_timestamp|$row->ar_id"
						);
					} else {
						$this->setContinueEnumParameter( 'continue', "$row->ar_timestamp|$row->ar_id" );
					}
					break;
				}
			}
		}

		if ( $resultPageSet !== null ) {
			if ( $params['generatetitles'] ) {
				$resultPageSet->populateFromTitles( $generated );
			} else {
				$resultPageSet->populateFromRevisionIDs( $generated );
			}
		} else {
			$result->addIndexedTagName( [ 'query', $this->getModuleName() ], 'page' );
		}
	}

	public function getAllowedParams() {
		$ret = parent::getAllowedParams() + [
			'user' => [
				ApiBase::PARAM_TYPE => 'user'
			],
			'namespace' => [
				ApiBase::PARAM_ISMULTI => true,
				ApiBase::PARAM_TYPE => 'namespace',
			],
			'start' => [
				ApiBase::PARAM_TYPE => 'timestamp',
				ApiBase::PARAM_HELP_MSG_INFO => [ [ 'useronly' ] ],
			],
			'end' => [
				ApiBase::PARAM_TYPE => 'timestamp',
				ApiBase::PARAM_HELP_MSG_INFO => [ [ 'useronly' ] ],
			],
			'dir' => [
				ApiBase::PARAM_TYPE => [
					'newer',
					'older'
				],
				ApiBase::PARAM_DFLT => 'older',
				ApiBase::PARAM_HELP_MSG => 'api-help-param-direction',
			],
			'from' => [
				ApiBase::PARAM_HELP_MSG_INFO => [ [ 'nonuseronly' ] ],
			],
			'to' => [
				ApiBase::PARAM_HELP_MSG_INFO => [ [ 'nonuseronly' ] ],
			],
			'prefix' => [
				ApiBase::PARAM_HELP_MSG_INFO => [ [ 'nonuseronly' ] ],
			],
			'excludeuser' => [
				ApiBase::PARAM_TYPE => 'user',
				ApiBase::PARAM_HELP_MSG_INFO => [ [ 'nonuseronly' ] ],
			],
			'tag' => null,
			'continue' => [
				ApiBase::PARAM_HELP_MSG => 'api-help-param-continue',
			],
			'generatetitles' => [
				ApiBase::PARAM_DFLT => false
			],
		];

		if ( $this->getConfig()->get( 'MiserMode' ) ) {
			$ret['user'][ApiBase::PARAM_HELP_MSG_APPEND] = [
				'apihelp-query+alldeletedrevisions-param-miser-user-namespace',
			];
			$ret['namespace'][ApiBase::PARAM_HELP_MSG_APPEND] = [
				'apihelp-query+alldeletedrevisions-param-miser-user-namespace',
			];
		}

		return $ret;
	}

	protected function getExamplesMessages() {
		return [
			'action=query&list=alldeletedrevisions&adruser=Example&adrlimit=50'
				=> 'apihelp-query+alldeletedrevisions-example-user',
			'action=query&list=alldeletedrevisions&adrdir=newer&adrnamespace=0&adrlimit=50'
				=> 'apihelp-query+alldeletedrevisions-example-ns-main',
		];
	}

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


1		<?php
2		/**
3		* Created on Oct 3, 2014
4		*
5		* Copyright © 2014 Brad Jorsch "[email protected]"
6		*
7		* Heavily based on ApiQueryDeletedrevs,
8		* Copyright © 2007 Roan Kattouw "<Firstname>.<Lastname>@gmail.com"
9		*
10		* This program is free software; you can redistribute it and/or modify
11		* it under the terms of the GNU General Public License as published by
12		* the Free Software Foundation; either version 2 of the License, or
13		* (at your option) any later version.
14		*
15		* This program is distributed in the hope that it will be useful,
16		* but WITHOUT ANY WARRANTY; without even the implied warranty of
17		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18		* GNU General Public License for more details.
19		*
20		* You should have received a copy of the GNU General Public License along
21		* with this program; if not, write to the Free Software Foundation, Inc.,
22		* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
23		* http://www.gnu.org/copyleft/gpl.html
24		*
25		* @file
26		*/
27
28		/**
29		* Query module to enumerate all deleted revisions.
30		*
31		* @ingroup API
32		*/
33		class ApiQueryAllDeletedRevisions extends ApiQueryRevisionsBase {
34
35		public function __construct( ApiQuery $query, $moduleName ) {
36		parent::__construct( $query, $moduleName, 'adr' );
37		}
38
39		/**
40		* @param ApiPageSet $resultPageSet
41		* @return void
42		*/
43		protected function run( ApiPageSet $resultPageSet = null ) {
44		$user = $this->getUser();
45		// Before doing anything at all, let's check permissions
46		if ( !$user->isAllowed( 'deletedhistory' ) ) {
47		$this->dieUsage(
48		'You don\'t have permission to view deleted revision information',
49		'permissiondenied'
50		);
51		}
52
53		$db = $this->getDB();
54		$params = $this->extractRequestParams( false );
55
56		$result = $this->getResult();
57
58		// If the user wants no namespaces, they get no pages.
59		if ( $params['namespace'] === [] ) {
60		if ( $resultPageSet === null ) {
61		$result->addValue( 'query', $this->getModuleName(), [] );
62		}
63		return;
64		}
65
66		// This module operates in two modes:
67		// 'user': List deleted revs by a certain user
68		// 'all': List all deleted revs in NS
69		$mode = 'all';
70		if ( !is_null( $params['user'] ) ) {
71		$mode = 'user';
72		}
73
74		if ( $mode == 'user' ) {
75	View Code Duplication	foreach ( [ 'from', 'to', 'prefix', 'excludeuser' ] as $param ) {
76		if ( !is_null( $params[$param] ) ) {
77		$p = $this->getModulePrefix();
78		$this->dieUsage( "The '{$p}{$param}' parameter cannot be used with '{$p}user'",
79		'badparams' );
80		}
81		}
82		} else {
83	View Code Duplication	foreach ( [ 'start', 'end' ] as $param ) {
84		if ( !is_null( $params[$param] ) ) {
85		$p = $this->getModulePrefix();
86		$this->dieUsage( "The '{$p}{$param}' parameter may only be used with '{$p}user'",
87		'badparams' );
88		}
89		}
90		}
91
92		// If we're generating titles only, we can use DISTINCT for a better
93		// query. But we can't do that in 'user' mode (wrong index), and we can
94		// only do it when sorting ASC (because MySQL apparently can't use an
95		// index backwards for grouping even though it can for ORDER BY, WTF?)
96		$dir = $params['dir'];
97		$optimizeGenerateTitles = false;
98		if ( $mode === 'all' && $params['generatetitles'] && $resultPageSet !== null ) {
99		if ( $dir === 'newer' ) {
100		$optimizeGenerateTitles = true;
101		} else {
102		$p = $this->getModulePrefix();
103		$this->setWarning( "For better performance when generating titles, set {$p}dir=newer" );
104		}
105		}
106
107		$this->addTables( 'archive' );
108		if ( $resultPageSet === null ) {
109		$this->parseParameters( $params );
110		$this->addFields( Revision::selectArchiveFields() );
111		$this->addFields( [ 'ar_title', 'ar_namespace' ] );
112		} else {
113		$this->limit = $this->getParameter( 'limit' ) ?: 10;
114		$this->addFields( [ 'ar_title', 'ar_namespace' ] );
115		if ( $optimizeGenerateTitles ) {
116		$this->addOption( 'DISTINCT' );
117		} else {
118		$this->addFields( [ 'ar_timestamp', 'ar_rev_id', 'ar_id' ] );
119		}
120		}
121
122	View Code Duplication	if ( $this->fld_tags ) {
123		$this->addTables( 'tag_summary' );
124		$this->addJoinConds(
125		[ 'tag_summary' => [ 'LEFT JOIN', [ 'ar_rev_id=ts_rev_id' ] ] ]
126		);
127		$this->addFields( 'ts_tags' );
128		}
129
130	View Code Duplication	if ( !is_null( $params['tag'] ) ) {
131		$this->addTables( 'change_tag' );
132		$this->addJoinConds(
133		[ 'change_tag' => [ 'INNER JOIN', [ 'ar_rev_id=ct_rev_id' ] ] ]
134		);
135		$this->addWhereFld( 'ct_tag', $params['tag'] );
136		}
137
138	View Code Duplication	if ( $this->fetchContent ) {
139		// Modern MediaWiki has the content for deleted revs in the 'text'
140		// table using fields old_text and old_flags. But revisions deleted
141		// pre-1.5 store the content in the 'archive' table directly using
142		// fields ar_text and ar_flags, and no corresponding 'text' row. So
143		// we have to LEFT JOIN and fetch all four fields.
144		$this->addTables( 'text' );
145		$this->addJoinConds(
146		[ 'text' => [ 'LEFT JOIN', [ 'ar_text_id=old_id' ] ] ]
147		);
148		$this->addFields( [ 'ar_text', 'ar_flags', 'old_text', 'old_flags' ] );
149
150		// This also means stricter restrictions
151		if ( !$user->isAllowedAny( 'undelete', 'deletedtext' ) ) {
152		$this->dieUsage(
153		'You don\'t have permission to view deleted revision content',
154		'permissiondenied'
155		);
156		}
157		}
158
159		$miser_ns = null;
160
161		if ( $mode == 'all' ) {
162		if ( $params['namespace'] !== null ) {
163		$namespaces = $params['namespace'];
164		} else {
165		$namespaces = MWNamespace::getValidNamespaces();
166		}
167		$this->addWhereFld( 'ar_namespace', $namespaces );
168
169		// For from/to/prefix, we have to consider the potential
170		// transformations of the title in all specified namespaces.
171		// Generally there will be only one transformation, but wikis with
172		// some namespaces case-sensitive could have two.
173		if ( $params['from'] !== null \|\| $params['to'] !== null ) {
174		$isDirNewer = ( $dir === 'newer' );
175		$after = ( $isDirNewer ? '>=' : '<=' );
176		$before = ( $isDirNewer ? '<=' : '>=' );
177		$where = [];
178		foreach ( $namespaces as $ns ) {
179		$w = [];
180	View Code Duplication	if ( $params['from'] !== null ) {
181		$w[] = 'ar_title' . $after .
182		$db->addQuotes( $this->titlePartToKey( $params['from'], $ns ) );
183		}
184	View Code Duplication	if ( $params['to'] !== null ) {
185		$w[] = 'ar_title' . $before .
186		$db->addQuotes( $this->titlePartToKey( $params['to'], $ns ) );
187		}
188		$w = $db->makeList( $w, LIST_AND );
189		$where[$w][] = $ns;
190		}
191	View Code Duplication	if ( count( $where ) == 1 ) {
192		$where = key( $where );
193		$this->addWhere( $where );
194		} else {
195		$where2 = [];
196		foreach ( $where as $w => $ns ) {
197		$where2[] = $db->makeList( [ $w, 'ar_namespace' => $ns ], LIST_AND );
198		}
199		$this->addWhere( $db->makeList( $where2, LIST_OR ) );
200		}
201		}
202
203		if ( isset( $params['prefix'] ) ) {
204		$where = [];
205		foreach ( $namespaces as $ns ) {
206		$w = 'ar_title' . $db->buildLike(
207		$this->titlePartToKey( $params['prefix'], $ns ),
208		$db->anyString() );
209		$where[$w][] = $ns;
210		}
211	View Code Duplication	if ( count( $where ) == 1 ) {
212		$where = key( $where );
213		$this->addWhere( $where );
214		} else {
215		$where2 = [];
216		foreach ( $where as $w => $ns ) {
217		$where2[] = $db->makeList( [ $w, 'ar_namespace' => $ns ], LIST_AND );
218		}
219		$this->addWhere( $db->makeList( $where2, LIST_OR ) );
220		}
221		}
222		} else {
223		if ( $this->getConfig()->get( 'MiserMode' ) ) {
224		$miser_ns = $params['namespace'];
225		} else {
226		$this->addWhereFld( 'ar_namespace', $params['namespace'] );
227		}
228		$this->addTimestampWhereRange( 'ar_timestamp', $dir, $params['start'], $params['end'] );
229		}
230
231	View Code Duplication	if ( !is_null( $params['user'] ) ) {
232		$this->addWhereFld( 'ar_user_text', $params['user'] );
233		} elseif ( !is_null( $params['excludeuser'] ) ) {
234		$this->addWhere( 'ar_user_text != ' .
235		$db->addQuotes( $params['excludeuser'] ) );
236		}
237
238	View Code Duplication	if ( !is_null( $params['user'] ) \|\| !is_null( $params['excludeuser'] ) ) {
239		// Paranoia: avoid brute force searches (bug 17342)
240		// (shouldn't be able to get here without 'deletedhistory', but
241		// check it again just in case)
242		if ( !$user->isAllowed( 'deletedhistory' ) ) {
243		$bitmask = Revision::DELETED_USER;
244		} elseif ( !$user->isAllowedAny( 'suppressrevision', 'viewsuppressed' ) ) {
245		$bitmask = Revision::DELETED_USER \| Revision::DELETED_RESTRICTED;
246		} else {
247		$bitmask = 0;
248		}
249		if ( $bitmask ) {
250		$this->addWhere( $db->bitAnd( 'ar_deleted', $bitmask ) . " != $bitmask" );
251		}
252		}
253
254		if ( !is_null( $params['continue'] ) ) {
255		$cont = explode( '\|', $params['continue'] );
256		$op = ( $dir == 'newer' ? '>' : '<' );
257		if ( $optimizeGenerateTitles ) {
258		$this->dieContinueUsageIf( count( $cont ) != 2 );
259		$ns = intval( $cont[0] );
260		$this->dieContinueUsageIf( strval( $ns ) !== $cont[0] );
261		$title = $db->addQuotes( $cont[1] );
262		$this->addWhere( "ar_namespace $op $ns OR " .
263		"(ar_namespace = $ns AND ar_title $op= $title)" );
264	View Code Duplication	} elseif ( $mode == 'all' ) {
265		$this->dieContinueUsageIf( count( $cont ) != 4 );
266		$ns = intval( $cont[0] );
267		$this->dieContinueUsageIf( strval( $ns ) !== $cont[0] );
268		$title = $db->addQuotes( $cont[1] );
269		$ts = $db->addQuotes( $db->timestamp( $cont[2] ) );
270		$ar_id = (int)$cont[3];
271		$this->dieContinueUsageIf( strval( $ar_id ) !== $cont[3] );
272		$this->addWhere( "ar_namespace $op $ns OR " .
273		"(ar_namespace = $ns AND " .
274		"(ar_title $op $title OR " .
275		"(ar_title = $title AND " .
276		"(ar_timestamp $op $ts OR " .
277		"(ar_timestamp = $ts AND " .
278		"ar_id $op= $ar_id)))))" );
279		} else {
280		$this->dieContinueUsageIf( count( $cont ) != 2 );
281		$ts = $db->addQuotes( $db->timestamp( $cont[0] ) );
282		$ar_id = (int)$cont[1];
283		$this->dieContinueUsageIf( strval( $ar_id ) !== $cont[1] );
284		$this->addWhere( "ar_timestamp $op $ts OR " .
285		"(ar_timestamp = $ts AND " .
286		"ar_id $op= $ar_id)" );
287		}
288		}
289
290		$this->addOption( 'LIMIT', $this->limit + 1 );
291
292		$sort = ( $dir == 'newer' ? '' : ' DESC' );
293		$orderby = [];
294		if ( $optimizeGenerateTitles ) {
295		// Targeting index name_title_timestamp
296	View Code Duplication	if ( $params['namespace'] === null \|\| count( array_unique( $params['namespace'] ) ) > 1 ) {
297		$orderby[] = "ar_namespace $sort";
298		}
299		$orderby[] = "ar_title $sort";
300		} elseif ( $mode == 'all' ) {
301		// Targeting index name_title_timestamp
302	View Code Duplication	if ( $params['namespace'] === null \|\| count( array_unique( $params['namespace'] ) ) > 1 ) {
303		$orderby[] = "ar_namespace $sort";
304		}
305		$orderby[] = "ar_title $sort";
306		$orderby[] = "ar_timestamp $sort";
307		$orderby[] = "ar_id $sort";
308		} else {
309		// Targeting index usertext_timestamp
310		// 'user' is always constant.
311		$orderby[] = "ar_timestamp $sort";
312		$orderby[] = "ar_id $sort";
313		}
314		$this->addOption( 'ORDER BY', $orderby );
315
316		$res = $this->select( __METHOD__ );
317		$pageMap = []; // Maps ns&title to array index
318		$count = 0;
319		$nextIndex = 0;
320		$generated = [];
321		foreach ( $res as $row ) {
322		if ( ++$count > $this->limit ) {
323		// We've had enough
324		if ( $optimizeGenerateTitles ) {
325		$this->setContinueEnumParameter( 'continue', "$row->ar_namespace\|$row->ar_title" );
326		} elseif ( $mode == 'all' ) {
327		$this->setContinueEnumParameter( 'continue',
328		"$row->ar_namespace\|$row->ar_title\|$row->ar_timestamp\|$row->ar_id"
329		);
330		} else {
331		$this->setContinueEnumParameter( 'continue', "$row->ar_timestamp\|$row->ar_id" );
332		}
333		break;
334		}
335
336		// Miser mode namespace check
337		if ( $miser_ns !== null && !in_array( $row->ar_namespace, $miser_ns ) ) {
338		continue;
339		}
340
341		if ( $resultPageSet !== null ) {
342		if ( $params['generatetitles'] ) {
343		$key = "{$row->ar_namespace}:{$row->ar_title}";
344		if ( !isset( $generated[$key] ) ) {
345		$generated[$key] = Title::makeTitle( $row->ar_namespace, $row->ar_title );
346		}
347		} else {
348		$generated[] = $row->ar_rev_id;
349		}
350		} else {
351		$revision = Revision::newFromArchiveRow( $row );
		0 ignored issues – show Bug introduced 2016-09-19 18:26 UTC by Report Bug Copy Issue Report It seems like `$row` defined by `$row` on line `321` can be `null`; however, `Revision::newFromArchiveRow()` 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...
352		$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 `321` 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...
353
354		if ( !isset( $pageMap[$row->ar_namespace][$row->ar_title] ) ) {
355		$index = $nextIndex++;
356		$pageMap[$row->ar_namespace][$row->ar_title] = $index;
357		$title = $revision->getTitle();
358		$a = [
359		'pageid' => $title->getArticleID(),
360		'revisions' => [ $rev ],
361		];
362		ApiResult::setIndexedTagName( $a['revisions'], 'rev' );
363		ApiQueryBase::addTitleInfo( $a, $title );
		0 ignored issues – show Bug introduced 2016-02-23 18:13 UTC by Report Bug Copy Issue Report It seems like `$title` defined by `$revision->getTitle()` on line `357` can be `null`; however, `ApiQueryBase::addTitleInfo()` 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...
364		$fit = $result->addValue( [ 'query', $this->getModuleName() ], $index, $a );
365	View Code Duplication	} else {
366		$index = $pageMap[$row->ar_namespace][$row->ar_title];
367		$fit = $result->addValue(
368		[ 'query', $this->getModuleName(), $index, 'revisions' ],
369		null, $rev );
370		}
371		if ( !$fit ) {
372		if ( $mode == 'all' ) {
373		$this->setContinueEnumParameter( 'continue',
374		"$row->ar_namespace\|$row->ar_title\|$row->ar_timestamp\|$row->ar_id"
375		);
376		} else {
377		$this->setContinueEnumParameter( 'continue', "$row->ar_timestamp\|$row->ar_id" );
378		}
379		break;
380		}
381		}
382		}
383
384		if ( $resultPageSet !== null ) {
385		if ( $params['generatetitles'] ) {
386		$resultPageSet->populateFromTitles( $generated );
387		} else {
388		$resultPageSet->populateFromRevisionIDs( $generated );
389		}
390		} else {
391		$result->addIndexedTagName( [ 'query', $this->getModuleName() ], 'page' );
392		}
393		}
394
395		public function getAllowedParams() {
396		$ret = parent::getAllowedParams() + [
397		'user' => [
398		ApiBase::PARAM_TYPE => 'user'
399		],
400		'namespace' => [
401		ApiBase::PARAM_ISMULTI => true,
402		ApiBase::PARAM_TYPE => 'namespace',
403		],
404		'start' => [
405		ApiBase::PARAM_TYPE => 'timestamp',
406		ApiBase::PARAM_HELP_MSG_INFO => [ [ 'useronly' ] ],
407		],
408		'end' => [
409		ApiBase::PARAM_TYPE => 'timestamp',
410		ApiBase::PARAM_HELP_MSG_INFO => [ [ 'useronly' ] ],
411		],
412		'dir' => [
413		ApiBase::PARAM_TYPE => [
414		'newer',
415		'older'
416		],
417		ApiBase::PARAM_DFLT => 'older',
418		ApiBase::PARAM_HELP_MSG => 'api-help-param-direction',
419		],
420		'from' => [
421		ApiBase::PARAM_HELP_MSG_INFO => [ [ 'nonuseronly' ] ],
422		],
423		'to' => [
424		ApiBase::PARAM_HELP_MSG_INFO => [ [ 'nonuseronly' ] ],
425		],
426		'prefix' => [
427		ApiBase::PARAM_HELP_MSG_INFO => [ [ 'nonuseronly' ] ],
428		],
429		'excludeuser' => [
430		ApiBase::PARAM_TYPE => 'user',
431		ApiBase::PARAM_HELP_MSG_INFO => [ [ 'nonuseronly' ] ],
432		],
433		'tag' => null,
434		'continue' => [
435		ApiBase::PARAM_HELP_MSG => 'api-help-param-continue',
436		],
437		'generatetitles' => [
438		ApiBase::PARAM_DFLT => false
439		],
440		];
441
442		if ( $this->getConfig()->get( 'MiserMode' ) ) {
443		$ret['user'][ApiBase::PARAM_HELP_MSG_APPEND] = [
444		'apihelp-query+alldeletedrevisions-param-miser-user-namespace',
445		];
446		$ret['namespace'][ApiBase::PARAM_HELP_MSG_APPEND] = [
447		'apihelp-query+alldeletedrevisions-param-miser-user-namespace',
448		];
449		}
450
451		return $ret;
452		}
453
454		protected function getExamplesMessages() {
455		return [
456		'action=query&list=alldeletedrevisions&adruser=Example&adrlimit=50'
457		=> 'apihelp-query+alldeletedrevisions-example-user',
458		'action=query&list=alldeletedrevisions&adrdir=newer&adrnamespace=0&adrlimit=50'
459		=> 'apihelp-query+alldeletedrevisions-example-ns-main',
460		];
461		}
462
463		public function getHelpUrls() {
464		return 'https://www.mediawiki.org/wiki/API:Alldeletedrevisions';
465		}
466		}
467

wikimedia / mediawiki

ApiQueryAllDeletedRevisions::run() F last analyzed 2016-11-13 17:42 UTC

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ApiQueryAllDeletedRevisions::run() F
last analyzed 2016-11-13 17:42 UTC