Database::deleteUser() - Code Metrics - Inspection of "Merge pull request #26161 from nextcloud/bugfix/no..." - nextcloud/server - Measure and Improve Code Quality continuously with Scrutinizer

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Push — master ( d011df...0d46fa )

by Joas

created 2021-03-17 14:22 UTC

Database::deleteUser() A

↳ Parent: Database

Complexity

Conditions	3
Paths	4

Size

Total Lines	14
Code Lines	8

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	3
eloc	8
nc	4
nop	1
dl	0
loc	14
rs	10
c	0
b	0
f	0

<?php

declare(strict_types=1);

/**
 * @copyright Copyright (c) 2016, ownCloud, Inc.
 *
 * @author adrien <[email protected]>
 * @author Aldo "xoen" Giambelluca <[email protected]>
 * @author Arthur Schiwon <[email protected]>
 * @author Bart Visscher <[email protected]>
 * @author Bjoern Schiessle <[email protected]>
 * @author Björn Schießle <[email protected]>
 * @author Christoph Wurst <[email protected]>
 * @author Daniel Calviño Sánchez <[email protected]>
 * @author fabian <[email protected]>
 * @author Georg Ehrke <[email protected]>
 * @author Jakob Sack <[email protected]>
 * @author Joas Schilling <[email protected]>
 * @author Jörn Friedrich Dreyer <[email protected]>
 * @author Loki3000 <[email protected]>
 * @author Lukas Reschke <[email protected]>
 * @author Morris Jobke <[email protected]>
 * @author nishiki <[email protected]>
 * @author Robin Appelman <[email protected]>
 * @author Robin McCorkell <[email protected]>
 * @author Roeland Jago Douma <[email protected]>
 * @author Thomas Müller <[email protected]>
 * @author Vincent Petry <[email protected]>
 *
 * @license AGPL-3.0
 *
 * This code is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License, version 3,
 * as published by the Free Software Foundation.
 *
 * 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License, version 3,
 * along with this program. If not, see <http://www.gnu.org/licenses/>
 *
 */

/*
 *
 * The following SQL statement is just a help for developers and will not be
 * executed!
 *
 * CREATE TABLE `users` (
 *   `uid` varchar(64) COLLATE utf8_unicode_ci NOT NULL,
 *   `password` varchar(255) COLLATE utf8_unicode_ci NOT NULL,
 *   PRIMARY KEY (`uid`)
 * ) ENGINE=MyISAM DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;
 *
 */

namespace OC\User;

use OC\Cache\CappedMemoryCache;
use OCP\EventDispatcher\IEventDispatcher;
use OCP\IDBConnection;
use OCP\Security\Events\ValidatePasswordPolicyEvent;
use OCP\User\Backend\ABackend;
use OCP\User\Backend\ICheckPasswordBackend;
use OCP\User\Backend\ICountUsersBackend;
use OCP\User\Backend\ICreateUserBackend;
use OCP\User\Backend\IGetDisplayNameBackend;
use OCP\User\Backend\IGetHomeBackend;
use OCP\User\Backend\IGetRealUIDBackend;
use OCP\User\Backend\ISearchKnownUsersBackend;
use OCP\User\Backend\ISetDisplayNameBackend;
use OCP\User\Backend\ISetPasswordBackend;

/**
 * Class for user management in a SQL Database (e.g. MySQL, SQLite)
 */
class Database extends ABackend implements
	ICreateUserBackend,
			   ISetPasswordBackend,
			   ISetDisplayNameBackend,
			   IGetDisplayNameBackend,
			   ICheckPasswordBackend,
			   IGetHomeBackend,
			   ICountUsersBackend,
			   ISearchKnownUsersBackend,
			   IGetRealUIDBackend {
	/** @var CappedMemoryCache */
	private $cache;

	/** @var IEventDispatcher */
	private $eventDispatcher;

	/** @var IDBConnection */
	private $dbConn;

	/** @var string */
	private $table;

	/**
	 * \OC\User\Database constructor.
	 *
	 * @param IEventDispatcher $eventDispatcher
	 * @param string $table
	 */
	public function __construct($eventDispatcher = null, $table = 'users') {
		$this->cache = new CappedMemoryCache();
		$this->table = $table;
		$this->eventDispatcher = $eventDispatcher ? $eventDispatcher : \OC::$server->query(IEventDispatcher::class);
	}

	/**
	 * FIXME: This function should not be required!
	 */
	private function fixDI() {
		if ($this->dbConn === null) {
			$this->dbConn = \OC::$server->getDatabaseConnection();
		}
	}

	/**
	 * Create a new user
	 *
	 * @param string $uid The username of the user to create
	 * @param string $password The password of the new user
	 * @return bool
	 *
	 * Creates a new user. Basic checking of username is done in OC_User
	 * itself, not in its subclasses.
	 */
	public function createUser(string $uid, string $password): bool {
		$this->fixDI();

		if (!$this->userExists($uid)) {
			$this->eventDispatcher->dispatchTyped(new ValidatePasswordPolicyEvent($password));

			$qb = $this->dbConn->getQueryBuilder();
			$qb->insert($this->table)
				->values([
					'uid' => $qb->createNamedParameter($uid),
					'password' => $qb->createNamedParameter(\OC::$server->getHasher()->hash($password)),
					'uid_lower' => $qb->createNamedParameter(mb_strtolower($uid)),
				]);

			$result = $qb->execute();

			// Clear cache
			unset($this->cache[$uid]);

			return $result ? true : false;
		}

		return false;
	}

	/**
	 * delete a user
	 *
	 * @param string $uid The username of the user to delete
	 * @return bool
	 *
	 * Deletes a user
	 */
	public function deleteUser($uid) {
		$this->fixDI();

		// Delete user-group-relation
		$query = $this->dbConn->getQueryBuilder();
		$query->delete($this->table)
			->where($query->expr()->eq('uid_lower', $query->createNamedParameter(mb_strtolower($uid))));
		$result = $query->execute();

		if (isset($this->cache[$uid])) {
			unset($this->cache[$uid]);
		}

		return $result ? true : false;
	}

	private function updatePassword(string $uid, string $passwordHash): bool {
		$query = $this->dbConn->getQueryBuilder();
		$query->update($this->table)
			->set('password', $query->createNamedParameter($passwordHash))
			->where($query->expr()->eq('uid_lower', $query->createNamedParameter(mb_strtolower($uid))));
		$result = $query->execute();

		return $result ? true : false;
	}

	/**
	 * Set password
	 *
	 * @param string $uid The username
	 * @param string $password The new password
	 * @return bool
	 *
	 * Change the password of a user
	 */
	public function setPassword(string $uid, string $password): bool {
		$this->fixDI();

		if ($this->userExists($uid)) {
			$this->eventDispatcher->dispatchTyped(new ValidatePasswordPolicyEvent($password));

			$hasher = \OC::$server->getHasher();
			$hashedPassword = $hasher->hash($password);

			return $this->updatePassword($uid, $hashedPassword);
		}

		return false;
	}

	/**
	 * Set display name
	 *
	 * @param string $uid The username
	 * @param string $displayName The new display name
	 * @return bool
	 *
	 * Change the display name of a user
	 */
	public function setDisplayName(string $uid, string $displayName): bool {
		$this->fixDI();

		if ($this->userExists($uid)) {
			$query = $this->dbConn->getQueryBuilder();
			$query->update($this->table)
				->set('displayname', $query->createNamedParameter($displayName))
				->where($query->expr()->eq('uid_lower', $query->createNamedParameter(mb_strtolower($uid))));
			$query->execute();

			$this->cache[$uid]['displayname'] = $displayName;

			return true;
		}

		return false;
	}

	/**
	 * get display name of the user
	 *
	 * @param string $uid user ID of the user
	 * @return string display name
	 */
	public function getDisplayName($uid): string {
		$uid = (string)$uid;
		$this->loadUser($uid);
		return empty($this->cache[$uid]['displayname']) ? $uid : $this->cache[$uid]['displayname'];
	}

	/**
	 * Get a list of all display names and user ids.
	 *
	 * @param string $search
	 * @param int|null $limit
	 * @param int|null $offset
	 * @return array an array of all displayNames (value) and the corresponding uids (key)
	 */
	public function getDisplayNames($search = '', $limit = null, $offset = null) {
		$limit = $this->fixLimit($limit);

		$this->fixDI();

		$query = $this->dbConn->getQueryBuilder();

		$query->select('uid', 'displayname')
			->from($this->table, 'u')
			->leftJoin('u', 'preferences', 'p', $query->expr()->andX(
				$query->expr()->eq('userid', 'uid'),
				$query->expr()->eq('appid', $query->expr()->literal('settings')),
				$query->expr()->eq('configkey', $query->expr()->literal('email')))
			)
			// sqlite doesn't like re-using a single named parameter here
			->where($query->expr()->iLike('uid', $query->createPositionalParameter('%' . $this->dbConn->escapeLikeParameter($search) . '%')))
			->orWhere($query->expr()->iLike('displayname', $query->createPositionalParameter('%' . $this->dbConn->escapeLikeParameter($search) . '%')))
			->orWhere($query->expr()->iLike('configvalue', $query->createPositionalParameter('%' . $this->dbConn->escapeLikeParameter($search) . '%')))
			->orderBy($query->func()->lower('displayname'), 'ASC')
			->addOrderBy('uid_lower', 'ASC')
			->setMaxResults($limit)
			->setFirstResult($offset);

		$result = $query->execute();
		$displayNames = [];
		while ($row = $result->fetch()) {
			$displayNames[(string)$row['uid']] = (string)$row['displayname'];
		}

		return $displayNames;
	}

	/**
	 * @param string $searcher
	 * @param string $pattern
	 * @param int|null $limit
	 * @param int|null $offset
	 * @return array
	 * @since 21.0.1
	 */
	public function searchKnownUsersByDisplayName(string $searcher, string $pattern, ?int $limit = null, ?int $offset = null): array {
		$limit = $this->fixLimit($limit);

		$this->fixDI();

		$query = $this->dbConn->getQueryBuilder();

		$query->select('u.uid', 'u.displayname')
			->from($this->table, 'u')
			->leftJoin('u', 'known_users', 'k', $query->expr()->andX(
				$query->expr()->eq('k.known_user', 'u.uid'),
				$query->expr()->eq('k.known_to', $query->createNamedParameter($searcher))
			))
			->where($query->expr()->eq('k.known_to', $query->createNamedParameter($searcher)))
			->andWhere($query->expr()->orX(
				$query->expr()->iLike('u.uid', $query->createNamedParameter('%' . $this->dbConn->escapeLikeParameter($pattern) . '%')),
				$query->expr()->iLike('u.displayname', $query->createNamedParameter('%' . $this->dbConn->escapeLikeParameter($pattern) . '%'))
			))
			->orderBy('u.displayname', 'ASC')
			->addOrderBy('u.uid_lower', 'ASC')
			->setMaxResults($limit)
			->setFirstResult($offset);

		$result = $query->execute();
		$displayNames = [];
		while ($row = $result->fetch()) {
			$displayNames[(string)$row['uid']] = (string)$row['displayname'];
		}

		return $displayNames;
	}

	/**
	 * Check if the password is correct
	 *
	 * @param string $loginName The loginname
	 * @param string $password The password
	 * @return string
	 *
	 * Check if the password is correct without logging in the user
	 * returns the user id or false
	 */
	public function checkPassword(string $loginName, string $password) {
		$this->fixDI();

		$qb = $this->dbConn->getQueryBuilder();
		$qb->select('uid', 'password')
			->from($this->table)
			->where(
				$qb->expr()->eq(
					'uid_lower', $qb->createNamedParameter(mb_strtolower($loginName))
				)
			);
		$result = $qb->execute();
		$row = $result->fetch();
		$result->closeCursor();

		if ($row) {
			$storedHash = $row['password'];
			$newHash = '';
			if (\OC::$server->getHasher()->verify($password, $storedHash, $newHash)) {
				if (!empty($newHash)) {
					$this->updatePassword($loginName, $newHash);
				}
				return (string)$row['uid'];
			}
		}

		return false;

	}

	/**
	 * Load an user in the cache
	 *
	 * @param string $uid the username
	 * @return boolean true if user was found, false otherwise
	 */
	private function loadUser($uid) {
		$this->fixDI();

		$uid = (string)$uid;
		if (!isset($this->cache[$uid])) {
			//guests $uid could be NULL or ''
			if ($uid === '') {
				$this->cache[$uid] = false;
				return true;
			}

			$qb = $this->dbConn->getQueryBuilder();
			$qb->select('uid', 'displayname')
				->from($this->table)
				->where(
					$qb->expr()->eq(
						'uid_lower', $qb->createNamedParameter(mb_strtolower($uid))
					)
				);
			$result = $qb->execute();
			$row = $result->fetch();
			$result->closeCursor();

			$this->cache[$uid] = false;

			// "uid" is primary key, so there can only be a single result
			if ($row !== false) {
				$this->cache[$uid]['uid'] = (string)$row['uid'];
				$this->cache[$uid]['displayname'] = (string)$row['displayname'];
			} else {
				return false;
			}
		}

		return true;
	}

	/**
	 * Get a list of all users
	 *
	 * @param string $search
	 * @param null|int $limit
	 * @param null|int $offset
	 * @return string[] an array of all uids
	 */
	public function getUsers($search = '', $limit = null, $offset = null) {
		$limit = $this->fixLimit($limit);

		$users = $this->getDisplayNames($search, $limit, $offset);
		$userIds = array_map(function ($uid) {
			return (string)$uid;
		}, array_keys($users));
		sort($userIds, SORT_STRING | SORT_FLAG_CASE);
		return $userIds;
	}

	/**
	 * check if a user exists
	 *
	 * @param string $uid the username
	 * @return boolean
	 */
	public function userExists($uid) {
		$this->loadUser($uid);
		return $this->cache[$uid] !== false;
	}

	/**
	 * get the user's home directory
	 *
	 * @param string $uid the username
	 * @return string|false
	 */
	public function getHome(string $uid) {
		if ($this->userExists($uid)) {
			return \OC::$server->getConfig()->getSystemValue('datadirectory', \OC::$SERVERROOT . '/data') . '/' . $uid;
		}

		return false;
	}

	/**
	 * @return bool
	 */
	public function hasUserListings() {
		return true;
	}

	/**
	 * counts the users in the database
	 *
	 * @return int|bool
	 */
	public function countUsers() {
		$this->fixDI();

		$query = $this->dbConn->getQueryBuilder();
		$query->select($query->func()->count('uid'))
			->from($this->table);
		$result = $query->execute();

		return $result->fetchOne();
	}

	/**
	 * returns the username for the given login name in the correct casing
	 *
	 * @param string $loginName
	 * @return string|false
	 */
	public function loginName2UserName($loginName) {
		if ($this->userExists($loginName)) {
			return $this->cache[$loginName]['uid'];
		}

		return false;
	}

	/**
	 * Backend name to be shown in user management
	 *
	 * @return string the name of the backend to be shown
	 */
	public function getBackendName() {
		return 'Database';
	}

	public static function preLoginNameUsedAsUserName($param) {
		if (!isset($param['uid'])) {
			throw new \Exception('key uid is expected to be set in $param');
		}

		$backends = \OC::$server->getUserManager()->getBackends();
		foreach ($backends as $backend) {
			if ($backend instanceof Database) {
				/** @var \OC\User\Database $backend */
				$uid = $backend->loginName2UserName($param['uid']);
				if ($uid !== false) {
					$param['uid'] = $uid;
					return;
				}
			}
		}
	}

	public function getRealUID(string $uid): string {
		if (!$this->userExists($uid)) {
			throw new \RuntimeException($uid . ' does not exist');
		}

		return $this->cache[$uid]['uid'];
	}

	private function fixLimit($limit) {
		if (is_int($limit) && $limit >= 0) {
			return $limit;
		}

		return null;
	}
}


1			<?php
2
3			declare(strict_types=1);
4
5			/**
6			* @copyright Copyright (c) 2016, ownCloud, Inc.
7			*
8			* @author adrien <[email protected]>
9			* @author Aldo "xoen" Giambelluca <[email protected]>
10			* @author Arthur Schiwon <[email protected]>
11			* @author Bart Visscher <[email protected]>
12			* @author Bjoern Schiessle <[email protected]>
13			* @author Björn Schießle <[email protected]>
14			* @author Christoph Wurst <[email protected]>
15			* @author Daniel Calviño Sánchez <[email protected]>
16			* @author fabian <[email protected]>
17			* @author Georg Ehrke <[email protected]>
18			* @author Jakob Sack <[email protected]>
19			* @author Joas Schilling <[email protected]>
20			* @author Jörn Friedrich Dreyer <[email protected]>
21			* @author Loki3000 <[email protected]>
22			* @author Lukas Reschke <[email protected]>
23			* @author Morris Jobke <[email protected]>
24			* @author nishiki <[email protected]>
25			* @author Robin Appelman <[email protected]>
26			* @author Robin McCorkell <[email protected]>
27			* @author Roeland Jago Douma <[email protected]>
28			* @author Thomas Müller <[email protected]>
29			* @author Vincent Petry <[email protected]>
30			*
31			* @license AGPL-3.0
32			*
33			* This code is free software: you can redistribute it and/or modify
34			* it under the terms of the GNU Affero General Public License, version 3,
35			* as published by the Free Software Foundation.
36			*
37			* This program is distributed in the hope that it will be useful,
38			* but WITHOUT ANY WARRANTY; without even the implied warranty of
39			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
40			* GNU Affero General Public License for more details.
41			*
42			* You should have received a copy of the GNU Affero General Public License, version 3,
43			* along with this program. If not, see <http://www.gnu.org/licenses/>
44			*
45			*/
46
47			/*
48			*
49			* The following SQL statement is just a help for developers and will not be
50			* executed!
51			*
52			* CREATE TABLE `users` (
53			* `uid` varchar(64) COLLATE utf8_unicode_ci NOT NULL,
54			* `password` varchar(255) COLLATE utf8_unicode_ci NOT NULL,
55			* PRIMARY KEY (`uid`)
56			* ) ENGINE=MyISAM DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;
57			*
58			*/
59
60			namespace OC\User;
61
62			use OC\Cache\CappedMemoryCache;
63			use OCP\EventDispatcher\IEventDispatcher;
64			use OCP\IDBConnection;
65			use OCP\Security\Events\ValidatePasswordPolicyEvent;
66			use OCP\User\Backend\ABackend;
67			use OCP\User\Backend\ICheckPasswordBackend;
68			use OCP\User\Backend\ICountUsersBackend;
69			use OCP\User\Backend\ICreateUserBackend;
70			use OCP\User\Backend\IGetDisplayNameBackend;
71			use OCP\User\Backend\IGetHomeBackend;
72			use OCP\User\Backend\IGetRealUIDBackend;
73			use OCP\User\Backend\ISearchKnownUsersBackend;
74			use OCP\User\Backend\ISetDisplayNameBackend;
75			use OCP\User\Backend\ISetPasswordBackend;
76
77			/**
78			* Class for user management in a SQL Database (e.g. MySQL, SQLite)
79			*/
80			class Database extends ABackend implements
81			ICreateUserBackend,
82			ISetPasswordBackend,
83			ISetDisplayNameBackend,
84			IGetDisplayNameBackend,
85			ICheckPasswordBackend,
86			IGetHomeBackend,
87			ICountUsersBackend,
88			ISearchKnownUsersBackend,
89			IGetRealUIDBackend {
90			/** @var CappedMemoryCache */
91			private $cache;
92
93			/** @var IEventDispatcher */
94			private $eventDispatcher;
95
96			/** @var IDBConnection */
97			private $dbConn;
98
99			/** @var string */
100			private $table;
101
102			/**
103			* \OC\User\Database constructor.
104			*
105			* @param IEventDispatcher $eventDispatcher
106			* @param string $table
107			*/
108			public function __construct($eventDispatcher = null, $table = 'users') {
109			$this->cache = new CappedMemoryCache();
110			$this->table = $table;
111			$this->eventDispatcher = $eventDispatcher ? $eventDispatcher : \OC::$server->query(IEventDispatcher::class);
112			}
113
114			/**
115			* FIXME: This function should not be required!
116			*/
117			private function fixDI() {
118			if ($this->dbConn === null) {
119			$this->dbConn = \OC::$server->getDatabaseConnection();
120			}
121			}
122
123			/**
124			* Create a new user
125			*
126			* @param string $uid The username of the user to create
127			* @param string $password The password of the new user
128			* @return bool
129			*
130			* Creates a new user. Basic checking of username is done in OC_User
131			* itself, not in its subclasses.
132			*/
133			public function createUser(string $uid, string $password): bool {
134			$this->fixDI();
135
136			if (!$this->userExists($uid)) {
137			$this->eventDispatcher->dispatchTyped(new ValidatePasswordPolicyEvent($password));
138
139			$qb = $this->dbConn->getQueryBuilder();
140			$qb->insert($this->table)
141			->values([
142			'uid' => $qb->createNamedParameter($uid),
143			'password' => $qb->createNamedParameter(\OC::$server->getHasher()->hash($password)),
144			'uid_lower' => $qb->createNamedParameter(mb_strtolower($uid)),
145			]);
146
147			$result = $qb->execute();
148
149			// Clear cache
150			unset($this->cache[$uid]);
151
152			return $result ? true : false;
153			}
154
155			return false;
156			}
157
158			/**
159			* delete a user
160			*
161			* @param string $uid The username of the user to delete
162			* @return bool
163			*
164			* Deletes a user
165			*/
166			public function deleteUser($uid) {
167			$this->fixDI();
168
169			// Delete user-group-relation
170			$query = $this->dbConn->getQueryBuilder();
171			$query->delete($this->table)
172			->where($query->expr()->eq('uid_lower', $query->createNamedParameter(mb_strtolower($uid))));
173			$result = $query->execute();
174
175			if (isset($this->cache[$uid])) {
176			unset($this->cache[$uid]);
177			}
178
179			return $result ? true : false;
180			}
181
182			private function updatePassword(string $uid, string $passwordHash): bool {
183			$query = $this->dbConn->getQueryBuilder();
184			$query->update($this->table)
185			->set('password', $query->createNamedParameter($passwordHash))
186			->where($query->expr()->eq('uid_lower', $query->createNamedParameter(mb_strtolower($uid))));
187			$result = $query->execute();
188
189			return $result ? true : false;
190			}
191
192			/**
193			* Set password
194			*
195			* @param string $uid The username
196			* @param string $password The new password
197			* @return bool
198			*
199			* Change the password of a user
200			*/
201			public function setPassword(string $uid, string $password): bool {
202			$this->fixDI();
203
204			if ($this->userExists($uid)) {
205			$this->eventDispatcher->dispatchTyped(new ValidatePasswordPolicyEvent($password));
206
207			$hasher = \OC::$server->getHasher();
208			$hashedPassword = $hasher->hash($password);
209
210			return $this->updatePassword($uid, $hashedPassword);
211			}
212
213			return false;
214			}
215
216			/**
217			* Set display name
218			*
219			* @param string $uid The username
220			* @param string $displayName The new display name
221			* @return bool
222			*
223			* Change the display name of a user
224			*/
225			public function setDisplayName(string $uid, string $displayName): bool {
226			$this->fixDI();
227
228			if ($this->userExists($uid)) {
229			$query = $this->dbConn->getQueryBuilder();
230			$query->update($this->table)
231			->set('displayname', $query->createNamedParameter($displayName))
232			->where($query->expr()->eq('uid_lower', $query->createNamedParameter(mb_strtolower($uid))));
233			$query->execute();
234
235			$this->cache[$uid]['displayname'] = $displayName;
236
237			return true;
238			}
239
240			return false;
241			}
242
243			/**
244			* get display name of the user
245			*
246			* @param string $uid user ID of the user
247			* @return string display name
248			*/
249			public function getDisplayName($uid): string {
250			$uid = (string)$uid;
251			$this->loadUser($uid);
252			return empty($this->cache[$uid]['displayname']) ? $uid : $this->cache[$uid]['displayname'];
253			}
254
255			/**
256			* Get a list of all display names and user ids.
257			*
258			* @param string $search
259			* @param int\|null $limit
260			* @param int\|null $offset
261			* @return array an array of all displayNames (value) and the corresponding uids (key)
262			*/
263			public function getDisplayNames($search = '', $limit = null, $offset = null) {
264			$limit = $this->fixLimit($limit);
265
266			$this->fixDI();
267
268			$query = $this->dbConn->getQueryBuilder();
269
270			$query->select('uid', 'displayname')
271			->from($this->table, 'u')
272			->leftJoin('u', 'preferences', 'p', $query->expr()->andX(
273			$query->expr()->eq('userid', 'uid'),
274			$query->expr()->eq('appid', $query->expr()->literal('settings')),
275			$query->expr()->eq('configkey', $query->expr()->literal('email')))
276			)
277			// sqlite doesn't like re-using a single named parameter here
278			->where($query->expr()->iLike('uid', $query->createPositionalParameter('%' . $this->dbConn->escapeLikeParameter($search) . '%')))
279			->orWhere($query->expr()->iLike('displayname', $query->createPositionalParameter('%' . $this->dbConn->escapeLikeParameter($search) . '%')))
280			->orWhere($query->expr()->iLike('configvalue', $query->createPositionalParameter('%' . $this->dbConn->escapeLikeParameter($search) . '%')))
281			->orderBy($query->func()->lower('displayname'), 'ASC')
282			->addOrderBy('uid_lower', 'ASC')
283			->setMaxResults($limit)
284			->setFirstResult($offset);
285
286			$result = $query->execute();
287			$displayNames = [];
288			while ($row = $result->fetch()) {
289			$displayNames[(string)$row['uid']] = (string)$row['displayname'];
290			}
291
292			return $displayNames;
293			}
294
295			/**
296			* @param string $searcher
297			* @param string $pattern
298			* @param int\|null $limit
299			* @param int\|null $offset
300			* @return array
301			* @since 21.0.1
302			*/
303			public function searchKnownUsersByDisplayName(string $searcher, string $pattern, ?int $limit = null, ?int $offset = null): array {
304			$limit = $this->fixLimit($limit);
305
306			$this->fixDI();
307
308			$query = $this->dbConn->getQueryBuilder();
309
310			$query->select('u.uid', 'u.displayname')
311			->from($this->table, 'u')
312			->leftJoin('u', 'known_users', 'k', $query->expr()->andX(
313			$query->expr()->eq('k.known_user', 'u.uid'),
314			$query->expr()->eq('k.known_to', $query->createNamedParameter($searcher))
315			))
316			->where($query->expr()->eq('k.known_to', $query->createNamedParameter($searcher)))
317			->andWhere($query->expr()->orX(
318			$query->expr()->iLike('u.uid', $query->createNamedParameter('%' . $this->dbConn->escapeLikeParameter($pattern) . '%')),
319			$query->expr()->iLike('u.displayname', $query->createNamedParameter('%' . $this->dbConn->escapeLikeParameter($pattern) . '%'))
320			))
321			->orderBy('u.displayname', 'ASC')
322			->addOrderBy('u.uid_lower', 'ASC')
323			->setMaxResults($limit)
324			->setFirstResult($offset);
325
326			$result = $query->execute();
327			$displayNames = [];
328			while ($row = $result->fetch()) {
329			$displayNames[(string)$row['uid']] = (string)$row['displayname'];
330			}
331
332			return $displayNames;
333			}
334
335			/**
336			* Check if the password is correct
337			*
338			* @param string $loginName The loginname
339			* @param string $password The password
340			* @return string
341			*
342			* Check if the password is correct without logging in the user
343			* returns the user id or false
344			*/
345			public function checkPassword(string $loginName, string $password) {
346			$this->fixDI();
347
348			$qb = $this->dbConn->getQueryBuilder();
349			$qb->select('uid', 'password')
350			->from($this->table)
351			->where(
352			$qb->expr()->eq(
353			'uid_lower', $qb->createNamedParameter(mb_strtolower($loginName))
354			)
355			);
356			$result = $qb->execute();
357			$row = $result->fetch();
358			$result->closeCursor();
359
360			if ($row) {
361			$storedHash = $row['password'];
362			$newHash = '';
363			if (\OC::$server->getHasher()->verify($password, $storedHash, $newHash)) {
364			if (!empty($newHash)) {
365			$this->updatePassword($loginName, $newHash);
366			}
367			return (string)$row['uid'];
368			}
369			}
370
371			return false;
			0 ignored issues – show Bug Best Practice introduced 2018-10-24 12:40 UTC by Report Bug Copy Issue Report The expression `return false` returns the type `false` which is incompatible with the documented return type `string`. Loading history...
372			}
373
374			/**
375			* Load an user in the cache
376			*
377			* @param string $uid the username
378			* @return boolean true if user was found, false otherwise
379			*/
380			private function loadUser($uid) {
381			$this->fixDI();
382
383			$uid = (string)$uid;
384			if (!isset($this->cache[$uid])) {
385			//guests $uid could be NULL or ''
386			if ($uid === '') {
387			$this->cache[$uid] = false;
388			return true;
389			}
390
391			$qb = $this->dbConn->getQueryBuilder();
392			$qb->select('uid', 'displayname')
393			->from($this->table)
394			->where(
395			$qb->expr()->eq(
396			'uid_lower', $qb->createNamedParameter(mb_strtolower($uid))
397			)
398			);
399			$result = $qb->execute();
400			$row = $result->fetch();
401			$result->closeCursor();
402
403			$this->cache[$uid] = false;
404
405			// "uid" is primary key, so there can only be a single result
406			if ($row !== false) {
407			$this->cache[$uid]['uid'] = (string)$row['uid'];
408			$this->cache[$uid]['displayname'] = (string)$row['displayname'];
409			} else {
410			return false;
411			}
412			}
413
414			return true;
415			}
416
417			/**
418			* Get a list of all users
419			*
420			* @param string $search
421			* @param null\|int $limit
422			* @param null\|int $offset
423			* @return string[] an array of all uids
424			*/
425			public function getUsers($search = '', $limit = null, $offset = null) {
426			$limit = $this->fixLimit($limit);
427
428			$users = $this->getDisplayNames($search, $limit, $offset);
429			$userIds = array_map(function ($uid) {
430			return (string)$uid;
431			}, array_keys($users));
432			sort($userIds, SORT_STRING \| SORT_FLAG_CASE);
433			return $userIds;
434			}
435
436			/**
437			* check if a user exists
438			*
439			* @param string $uid the username
440			* @return boolean
441			*/
442			public function userExists($uid) {
443			$this->loadUser($uid);
444			return $this->cache[$uid] !== false;
445			}
446
447			/**
448			* get the user's home directory
449			*
450			* @param string $uid the username
451			* @return string\|false
452			*/
453			public function getHome(string $uid) {
454			if ($this->userExists($uid)) {
455			return \OC::$server->getConfig()->getSystemValue('datadirectory', \OC::$SERVERROOT . '/data') . '/' . $uid;
456			}
457
458			return false;
459			}
460
461			/**
462			* @return bool
463			*/
464			public function hasUserListings() {
465			return true;
466			}
467
468			/**
469			* counts the users in the database
470			*
471			* @return int\|bool
472			*/
473			public function countUsers() {
474			$this->fixDI();
475
476			$query = $this->dbConn->getQueryBuilder();
477			$query->select($query->func()->count('uid'))
478			->from($this->table);
479			$result = $query->execute();
480
481			return $result->fetchOne();
482			}
483
484			/**
485			* returns the username for the given login name in the correct casing
486			*
487			* @param string $loginName
488			* @return string\|false
489			*/
490			public function loginName2UserName($loginName) {
491			if ($this->userExists($loginName)) {
492			return $this->cache[$loginName]['uid'];
493			}
494
495			return false;
496			}
497
498			/**
499			* Backend name to be shown in user management
500			*
501			* @return string the name of the backend to be shown
502			*/
503			public function getBackendName() {
504			return 'Database';
505			}
506
507			public static function preLoginNameUsedAsUserName($param) {
508			if (!isset($param['uid'])) {
509			throw new \Exception('key uid is expected to be set in $param');
510			}
511
512			$backends = \OC::$server->getUserManager()->getBackends();
513			foreach ($backends as $backend) {
514			if ($backend instanceof Database) {
515			/** @var \OC\User\Database $backend */
516			$uid = $backend->loginName2UserName($param['uid']);
517			if ($uid !== false) {
518			$param['uid'] = $uid;
519			return;
520			}
521			}
522			}
523			}
524
525			public function getRealUID(string $uid): string {
526			if (!$this->userExists($uid)) {
527			throw new \RuntimeException($uid . ' does not exist');
528			}
529
530			return $this->cache[$uid]['uid'];
531			}
532
533			private function fixLimit($limit) {
534			if (is_int($limit) && $limit >= 0) {
535			return $limit;
536			}
537
538			return null;
539			}
540			}
541

nextcloud / server

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Database::deleteUser() A

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