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<?php |
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declare(strict_types=1); |
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/** |
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* Caridea |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); you may not |
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* use this file except in compliance with the License. You may obtain a copy of |
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* the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
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* License for the specific language governing permissions and limitations under |
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* the License. |
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* |
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* @copyright 2015-2018 LibreWorks contributors |
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* @license Apache-2.0 |
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*/ |
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namespace Caridea\Auth; |
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/** |
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* Security principal; an authenticated or anonymous user. |
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* |
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* @copyright 2015-2018 LibreWorks contributors |
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* @license Apache-2.0 |
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*/ |
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class Principal |
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{ |
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/** |
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* @var string The principal username |
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*/ |
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protected $username; |
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/** |
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* @var bool Whether the principal is anonymous |
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*/ |
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protected $anonymous; |
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/** |
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* @var array Associative array of extra details |
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*/ |
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protected $details; |
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/** |
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* @var Principal singleton instance of the anonymous Principal |
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*/ |
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private static $anon; |
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/** |
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* Creates a new security principal. |
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* |
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* @param string|null $username |
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* @param array $details |
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* @param bool $anonymous |
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*/ |
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protected function __construct(?string $username = null, array $details = [], bool $anonymous = false) |
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{ |
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$this->username = $username; |
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$this->details = $details; |
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$this->anonymous = $anonymous; |
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} |
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/** |
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* Gets a key-value array containing any authentication details. |
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* |
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* @return array The auth details |
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*/ |
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public function getDetails(): array |
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{ |
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return $this->details; |
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} |
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/** |
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* Gets the authenticated principal username. |
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* |
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* An anonymous user has a `null` username. |
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* |
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* @return string|null The username, or `null` |
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*/ |
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public function getUsername(): ?string |
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{ |
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return $this->username; |
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} |
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/** |
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* Gets whether this authentication is anonymous. |
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* |
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* @return bool Whether this principal is anonymous |
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*/ |
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public function isAnonymous(): bool |
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{ |
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return $this->anonymous; |
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} |
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/** |
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* Gets a string representation. |
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* |
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* @return string The string representation |
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*/ |
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public function __toString(): string |
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{ |
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return $this->anonymous ? "[anonymous]" : $this->username; |
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} |
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/** |
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* Gets a non-anonymous Principal. |
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* |
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* @param string $username The principal username |
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* @param array $details Any authentication details |
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* @return Principal The principal |
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*/ |
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public static function get(string $username, array $details): Principal |
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{ |
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return new self($username, $details); |
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} |
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/** |
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* Gets a token representing an anonymous authentication. |
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* |
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* @return Principal The anonymous principal |
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*/ |
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public static function getAnonymous(): Principal |
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{ |
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if (self::$anon === null) { |
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self::$anon = new self(null, [], true); |
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} |
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return self::$anon; |
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} |
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} |
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