nextcloud /
server
| Total Complexity | 47 |
| Total Lines | 421 |
| Duplicated Lines | 0 % |
| Changes | 1 | ||
| Bugs | 0 | Features | 0 |
Complex classes like Database often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use Database, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 77 | class Database extends ABackend |
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| 78 | implements ICreateUserBackend, |
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| 79 | ISetPasswordBackend, |
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| 80 | ISetDisplayNameBackend, |
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| 81 | IGetDisplayNameBackend, |
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| 82 | ICheckPasswordBackend, |
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| 83 | IGetHomeBackend, |
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| 84 | ICountUsersBackend, |
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| 85 | IGetRealUIDBackend { |
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| 86 | /** @var CappedMemoryCache */ |
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| 87 | private $cache; |
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| 88 | |||
| 89 | /** @var EventDispatcherInterface */ |
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| 90 | private $eventDispatcher; |
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| 91 | |||
| 92 | /** @var IDBConnection */ |
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| 93 | private $dbConn; |
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| 94 | |||
| 95 | /** @var string */ |
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| 96 | private $table; |
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| 97 | |||
| 98 | /** |
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| 99 | * \OC\User\Database constructor. |
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| 100 | * |
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| 101 | * @param EventDispatcherInterface $eventDispatcher |
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| 102 | * @param string $table |
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| 103 | */ |
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| 104 | public function __construct($eventDispatcher = null, $table = 'users') { |
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| 105 | $this->cache = new CappedMemoryCache(); |
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| 106 | $this->table = $table; |
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| 107 | $this->eventDispatcher = $eventDispatcher ? $eventDispatcher : \OC::$server->getEventDispatcher(); |
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| 108 | } |
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| 109 | |||
| 110 | /** |
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| 111 | * FIXME: This function should not be required! |
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| 112 | */ |
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| 113 | private function fixDI() { |
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| 114 | if ($this->dbConn === null) { |
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| 115 | $this->dbConn = \OC::$server->getDatabaseConnection(); |
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| 116 | } |
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| 117 | } |
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| 118 | |||
| 119 | /** |
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| 120 | * Create a new user |
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| 121 | * |
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| 122 | * @param string $uid The username of the user to create |
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| 123 | * @param string $password The password of the new user |
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| 124 | * @return bool |
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| 125 | * |
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| 126 | * Creates a new user. Basic checking of username is done in OC_User |
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| 127 | * itself, not in its subclasses. |
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| 128 | */ |
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| 129 | public function createUser(string $uid, string $password): bool { |
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| 130 | $this->fixDI(); |
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| 131 | |||
| 132 | if (!$this->userExists($uid)) { |
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| 133 | $event = new GenericEvent($password); |
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| 134 | $this->eventDispatcher->dispatch('OCP\PasswordPolicy::validate', $event); |
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| 135 | |||
| 136 | $qb = $this->dbConn->getQueryBuilder(); |
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| 137 | $qb->insert($this->table) |
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| 138 | ->values([ |
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| 139 | 'uid' => $qb->createNamedParameter($uid), |
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| 140 | 'password' => $qb->createNamedParameter(\OC::$server->getHasher()->hash($password)), |
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| 141 | 'uid_lower' => $qb->createNamedParameter(mb_strtolower($uid)), |
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| 142 | ]); |
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| 143 | |||
| 144 | $result = $qb->execute(); |
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| 145 | |||
| 146 | // Clear cache |
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| 147 | unset($this->cache[$uid]); |
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| 148 | |||
| 149 | return $result ? true : false; |
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| 150 | } |
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| 151 | |||
| 152 | return false; |
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| 153 | } |
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| 154 | |||
| 155 | /** |
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| 156 | * delete a user |
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| 157 | * |
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| 158 | * @param string $uid The username of the user to delete |
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| 159 | * @return bool |
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| 160 | * |
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| 161 | * Deletes a user |
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| 162 | */ |
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| 163 | public function deleteUser($uid) { |
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| 164 | $this->fixDI(); |
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| 165 | |||
| 166 | // Delete user-group-relation |
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| 167 | $query = $this->dbConn->getQueryBuilder(); |
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| 168 | $query->delete($this->table) |
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| 169 | ->where($query->expr()->eq('uid_lower', $query->createNamedParameter(mb_strtolower($uid)))); |
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| 170 | $result = $query->execute(); |
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| 171 | |||
| 172 | if (isset($this->cache[$uid])) { |
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| 173 | unset($this->cache[$uid]); |
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| 174 | } |
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| 175 | |||
| 176 | return $result ? true : false; |
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| 177 | } |
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| 178 | |||
| 179 | private function updatePassword(string $uid, string $passwordHash): bool { |
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| 180 | $query = $this->dbConn->getQueryBuilder(); |
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| 181 | $query->update($this->table) |
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| 182 | ->set('password', $query->createNamedParameter($passwordHash)) |
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| 183 | ->where($query->expr()->eq('uid_lower', $query->createNamedParameter(mb_strtolower($uid)))); |
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| 184 | $result = $query->execute(); |
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| 185 | |||
| 186 | return $result ? true : false; |
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| 187 | } |
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| 188 | |||
| 189 | /** |
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| 190 | * Set password |
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| 191 | * |
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| 192 | * @param string $uid The username |
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| 193 | * @param string $password The new password |
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| 194 | * @return bool |
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| 195 | * |
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| 196 | * Change the password of a user |
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| 197 | */ |
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| 198 | public function setPassword(string $uid, string $password): bool { |
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| 212 | } |
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| 213 | |||
| 214 | /** |
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| 215 | * Set display name |
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| 216 | * |
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| 217 | * @param string $uid The username |
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| 218 | * @param string $displayName The new display name |
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| 219 | * @return bool |
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| 220 | * |
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| 221 | * Change the display name of a user |
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| 222 | */ |
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| 223 | public function setDisplayName(string $uid, string $displayName): bool { |
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| 224 | $this->fixDI(); |
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| 225 | |||
| 226 | if ($this->userExists($uid)) { |
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| 227 | $query = $this->dbConn->getQueryBuilder(); |
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| 228 | $query->update($this->table) |
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| 229 | ->set('displayname', $query->createNamedParameter($displayName)) |
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| 230 | ->where($query->expr()->eq('uid_lower', $query->createNamedParameter(mb_strtolower($uid)))); |
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| 231 | $query->execute(); |
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| 232 | |||
| 233 | $this->cache[$uid]['displayname'] = $displayName; |
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| 234 | |||
| 235 | return true; |
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| 236 | } |
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| 237 | |||
| 238 | return false; |
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| 239 | } |
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| 240 | |||
| 241 | /** |
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| 242 | * get display name of the user |
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| 243 | * |
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| 244 | * @param string $uid user ID of the user |
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| 245 | * @return string display name |
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| 246 | */ |
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| 247 | public function getDisplayName($uid): string { |
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| 251 | } |
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| 252 | |||
| 253 | /** |
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| 254 | * Get a list of all display names and user ids. |
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| 255 | * |
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| 256 | * @param string $search |
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| 257 | * @param string|null $limit |
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| 258 | * @param string|null $offset |
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| 259 | * @return array an array of all displayNames (value) and the corresponding uids (key) |
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| 260 | */ |
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| 261 | public function getDisplayNames($search = '', $limit = null, $offset = null) { |
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| 262 | $limit = $this->fixLimit($limit); |
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| 263 | |||
| 264 | $this->fixDI(); |
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| 265 | |||
| 266 | $query = $this->dbConn->getQueryBuilder(); |
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| 267 | |||
| 268 | $query->select('uid', 'displayname') |
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| 269 | ->from($this->table, 'u') |
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| 270 | ->leftJoin('u', 'preferences', 'p', $query->expr()->andX( |
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| 271 | $query->expr()->eq('userid', 'uid'), |
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| 272 | $query->expr()->eq('appid', $query->expr()->literal('settings')), |
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| 273 | $query->expr()->eq('configkey', $query->expr()->literal('email'))) |
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| 274 | ) |
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| 275 | // sqlite doesn't like re-using a single named parameter here |
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| 276 | ->where($query->expr()->iLike('uid', $query->createPositionalParameter('%' . $this->dbConn->escapeLikeParameter($search) . '%'))) |
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| 277 | ->orWhere($query->expr()->iLike('displayname', $query->createPositionalParameter('%' . $this->dbConn->escapeLikeParameter($search) . '%'))) |
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| 278 | ->orWhere($query->expr()->iLike('configvalue', $query->createPositionalParameter('%' . $this->dbConn->escapeLikeParameter($search) . '%'))) |
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| 279 | ->orderBy($query->func()->lower('displayname'), 'ASC') |
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| 280 | ->orderBy('uid_lower', 'ASC') |
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| 281 | ->setMaxResults($limit) |
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| 282 | ->setFirstResult($offset); |
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| 283 | |||
| 284 | $result = $query->execute(); |
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| 285 | $displayNames = []; |
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| 286 | while ($row = $result->fetch()) { |
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| 287 | $displayNames[(string)$row['uid']] = (string)$row['displayname']; |
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| 288 | } |
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| 289 | |||
| 290 | return $displayNames; |
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| 291 | } |
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| 292 | |||
| 293 | /** |
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| 294 | * Check if the password is correct |
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| 295 | * |
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| 296 | * @param string $uid The username |
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| 297 | * @param string $password The password |
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| 298 | * @return string |
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| 299 | * |
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| 300 | * Check if the password is correct without logging in the user |
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| 301 | * returns the user id or false |
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| 302 | */ |
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| 303 | public function checkPassword(string $uid, string $password) { |
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| 304 | $this->fixDI(); |
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| 305 | |||
| 306 | $qb = $this->dbConn->getQueryBuilder(); |
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| 307 | $qb->select('uid', 'password') |
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| 308 | ->from($this->table) |
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| 309 | ->where( |
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| 310 | $qb->expr()->eq( |
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| 311 | 'uid_lower', $qb->createNamedParameter(mb_strtolower($uid)) |
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| 312 | ) |
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| 313 | ); |
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| 314 | $result = $qb->execute(); |
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| 315 | $row = $result->fetch(); |
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| 316 | $result->closeCursor(); |
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| 317 | |||
| 318 | if ($row) { |
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| 319 | $storedHash = $row['password']; |
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| 320 | $newHash = ''; |
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| 321 | if (\OC::$server->getHasher()->verify($password, $storedHash, $newHash)) { |
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| 322 | if (!empty($newHash)) { |
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| 323 | $this->updatePassword($uid, $newHash); |
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| 324 | } |
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| 325 | return (string)$row['uid']; |
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| 326 | } |
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| 327 | |||
| 328 | } |
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| 329 | |||
| 330 | return false; |
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| 331 | } |
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| 332 | |||
| 333 | /** |
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| 334 | * Load an user in the cache |
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| 335 | * |
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| 336 | * @param string $uid the username |
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| 337 | * @return boolean true if user was found, false otherwise |
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| 338 | */ |
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| 339 | private function loadUser($uid) { |
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| 340 | $this->fixDI(); |
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| 341 | |||
| 342 | $uid = (string)$uid; |
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| 343 | if (!isset($this->cache[$uid])) { |
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| 344 | //guests $uid could be NULL or '' |
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| 345 | if ($uid === '') { |
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| 346 | $this->cache[$uid] = false; |
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| 347 | return true; |
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| 348 | } |
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| 349 | |||
| 350 | $qb = $this->dbConn->getQueryBuilder(); |
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| 351 | $qb->select('uid', 'displayname') |
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| 352 | ->from($this->table) |
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| 353 | ->where( |
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| 354 | $qb->expr()->eq( |
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| 355 | 'uid_lower', $qb->createNamedParameter(mb_strtolower($uid)) |
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| 356 | ) |
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| 357 | ); |
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| 358 | $result = $qb->execute(); |
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| 359 | $row = $result->fetch(); |
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| 360 | $result->closeCursor(); |
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| 361 | |||
| 362 | $this->cache[$uid] = false; |
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| 363 | |||
| 364 | // "uid" is primary key, so there can only be a single result |
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| 365 | if ($row !== false) { |
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| 366 | $this->cache[$uid]['uid'] = (string)$row['uid']; |
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| 367 | $this->cache[$uid]['displayname'] = (string)$row['displayname']; |
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| 368 | } else { |
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| 369 | return false; |
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| 370 | } |
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| 371 | } |
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| 372 | |||
| 373 | return true; |
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| 374 | } |
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| 375 | |||
| 376 | /** |
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| 377 | * Get a list of all users |
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| 378 | * |
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| 379 | * @param string $search |
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| 380 | * @param null|int $limit |
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| 381 | * @param null|int $offset |
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| 382 | * @return string[] an array of all uids |
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| 383 | */ |
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| 384 | public function getUsers($search = '', $limit = null, $offset = null) { |
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| 385 | $limit = $this->fixLimit($limit); |
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| 386 | |||
| 387 | $users = $this->getDisplayNames($search, $limit, $offset); |
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| 388 | $userIds = array_map(function ($uid) { |
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| 389 | return (string)$uid; |
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| 390 | }, array_keys($users)); |
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| 391 | sort($userIds, SORT_STRING | SORT_FLAG_CASE); |
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| 392 | return $userIds; |
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| 393 | } |
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| 394 | |||
| 395 | /** |
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| 396 | * check if a user exists |
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| 397 | * |
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| 398 | * @param string $uid the username |
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| 399 | * @return boolean |
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| 400 | */ |
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| 401 | public function userExists($uid) { |
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| 402 | $this->loadUser($uid); |
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| 403 | return $this->cache[$uid] !== false; |
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| 404 | } |
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| 405 | |||
| 406 | /** |
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| 407 | * get the user's home directory |
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| 408 | * |
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| 409 | * @param string $uid the username |
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| 410 | * @return string|false |
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| 411 | */ |
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| 412 | public function getHome(string $uid) { |
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| 413 | if ($this->userExists($uid)) { |
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| 414 | return \OC::$server->getConfig()->getSystemValue('datadirectory', \OC::$SERVERROOT . '/data') . '/' . $uid; |
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| 415 | } |
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| 416 | |||
| 417 | return false; |
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| 418 | } |
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| 419 | |||
| 420 | /** |
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| 421 | * @return bool |
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| 422 | */ |
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| 423 | public function hasUserListings() { |
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| 424 | return true; |
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| 425 | } |
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| 426 | |||
| 427 | /** |
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| 428 | * counts the users in the database |
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| 429 | * |
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| 430 | * @return int|bool |
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| 431 | */ |
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| 432 | public function countUsers() { |
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| 433 | $this->fixDI(); |
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| 434 | |||
| 435 | $query = $this->dbConn->getQueryBuilder(); |
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| 436 | $query->select($query->func()->count('uid')) |
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| 437 | ->from($this->table); |
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| 438 | $result = $query->execute(); |
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| 439 | |||
| 440 | return $result->fetchColumn(); |
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| 441 | } |
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| 442 | |||
| 443 | /** |
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| 444 | * returns the username for the given login name in the correct casing |
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| 445 | * |
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| 446 | * @param string $loginName |
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| 447 | * @return string|false |
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| 448 | */ |
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| 449 | public function loginName2UserName($loginName) { |
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| 450 | if ($this->userExists($loginName)) { |
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| 451 | return $this->cache[$loginName]['uid']; |
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| 452 | } |
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| 453 | |||
| 454 | return false; |
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| 455 | } |
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| 456 | |||
| 457 | /** |
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| 458 | * Backend name to be shown in user management |
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| 459 | * |
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| 460 | * @return string the name of the backend to be shown |
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| 461 | */ |
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| 462 | public function getBackendName() { |
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| 464 | } |
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| 465 | |||
| 466 | public static function preLoginNameUsedAsUserName($param) { |
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| 467 | if (!isset($param['uid'])) { |
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| 468 | throw new \Exception('key uid is expected to be set in $param'); |
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| 469 | } |
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| 470 | |||
| 471 | $backends = \OC::$server->getUserManager()->getBackends(); |
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| 472 | foreach ($backends as $backend) { |
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| 473 | if ($backend instanceof Database) { |
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| 474 | /** @var \OC\User\Database $backend */ |
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| 475 | $uid = $backend->loginName2UserName($param['uid']); |
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| 476 | if ($uid !== false) { |
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| 477 | $param['uid'] = $uid; |
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| 478 | return; |
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| 479 | } |
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| 480 | } |
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| 481 | } |
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| 482 | } |
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| 483 | |||
| 484 | public function getRealUID(string $uid): string { |
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| 485 | if (!$this->userExists($uid)) { |
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| 486 | throw new \RuntimeException($uid . ' does not exist'); |
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| 487 | } |
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| 488 | |||
| 489 | return $this->cache[$uid]['uid']; |
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| 490 | } |
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| 491 | |||
| 492 | private function fixLimit($limit) { |
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| 498 | } |
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| 499 | } |
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| 500 |
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