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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace Cosray; |
| 6 | |
| 7 | use Celema\Session\Session as BaseSession; |
| 8 | use SessionHandlerInterface; |
| 9 | |
| 10 | /** |
| 11 | * The CMS session: the signed-in user and the remember-me cookie. Session |
| 12 | * data goes through celema/session; the remember-me cookie is read from |
| 13 | * the request's cookies, not from `$_COOKIE`. |
| 14 | */ |
| 15 | class Session extends BaseSession |
| 16 | { |
| 17 | protected string $authCookie; |
| 18 | protected ?string $authToken; |
| 19 | |
| 20 | /** |
| 21 | * @param array<string, mixed> $options |
| 22 | * @param array<array-key, mixed> $cookies The request's cookies. |
| 23 | */ |
| 24 | public function __construct( |
| 25 | array $options = [], |
| 26 | string $name = '', |
| 27 | ?SessionHandlerInterface $handler = null, |
| 28 | array $cookies = [], |
| 29 | ) { |
| 30 | parent::__construct($options, $name, $handler); |
| 31 | |
| 32 | $this->authCookie = $name ? $name . '_auth' : 'cosray_auth'; |
| 33 | $token = $cookies[$this->authCookie] ?? null; |
| 34 | $this->authToken = is_string($token) && $token !== '' ? $token : null; |
| 35 | } |
| 36 | |
| 37 | public function setUser(User $user): void |
| 38 | { |
| 39 | $this->set('user_id', $user->id); |
| 40 | $this->set('user_stamp', self::stamp($user)); |
| 41 | } |
| 42 | |
| 43 | /** |
| 44 | * A session opened before the user's password last changed no longer |
| 45 | * counts. One without a stamp predates the stamp and is left alone. |
| 46 | */ |
| 47 | public function holds(User $user): bool |
| 48 | { |
| 49 | $stamp = $this->read('user_stamp'); |
| 50 | |
| 51 | return !is_string($stamp) || hash_equals($stamp, self::stamp($user)); |
| 52 | } |
| 53 | |
| 54 | public function authenticatedUserId(): ?int |
| 55 | { |
| 56 | $id = $this->read('user_id'); |
| 57 | |
| 58 | return is_int($id) ? $id : null; |
| 59 | } |
| 60 | |
| 61 | public function remember(#[\SensitiveParameter] Token $token, int $expires): void |
| 62 | { |
| 63 | $value = $token->get(); |
| 64 | // Later reads in the same request see the new token. |
| 65 | $this->authToken = $value; |
| 66 | |
| 67 | setcookie( |
| 68 | $this->authCookie, |
| 69 | $value, |
| 70 | $this->rememberCookieOptions($expires), |
| 71 | ); |
| 72 | } |
| 73 | |
| 74 | public function forgetRemembered(): void |
| 75 | { |
| 76 | $this->authToken = null; |
| 77 | |
| 78 | setcookie( |
| 79 | $this->authCookie, |
| 80 | '', |
| 81 | $this->rememberCookieOptions(time() - (60 * 60 * 24)), |
| 82 | ); |
| 83 | } |
| 84 | |
| 85 | public function getAuthToken(): ?string |
| 86 | { |
| 87 | return $this->authToken; |
| 88 | } |
| 89 | |
| 90 | public function signalActivity(): void |
| 91 | { |
| 92 | $this->set('last_activity', time()); |
| 93 | } |
| 94 | |
| 95 | public function lastActivity(): ?int |
| 96 | { |
| 97 | $time = $this->read('last_activity'); |
| 98 | |
| 99 | return is_int($time) ? $time : null; |
| 100 | } |
| 101 | |
| 102 | /** |
| 103 | * A value of the current session, or null when the session is not |
| 104 | * active, for example after it was destroyed by a logout. |
| 105 | * |
| 106 | * @param non-empty-string $key |
| 107 | */ |
| 108 | private function read(string $key): mixed |
| 109 | { |
| 110 | return $this->active() ? $this->get($key, null) : null; |
| 111 | } |
| 112 | |
| 113 | private static function stamp(User $user): string |
| 114 | { |
| 115 | return substr(hash('sha256', $user->password), 0, 32); |
| 116 | } |
| 117 | |
| 118 | /** @return array{expires: int, path: string, domain?: string, secure: bool, httponly: bool, samesite: 'Lax'|'Strict'|'None', partitioned?: bool} */ |
| 119 | private function rememberCookieOptions(int $expires): array |
| 120 | { |
| 121 | $options = [ |
| 122 | 'expires' => $expires, |
| 123 | 'path' => (string) ($this->options['cookie_path'] ?? '/'), |
| 124 | 'secure' => (bool) ($this->options['cookie_secure'] ?? true), |
| 125 | 'httponly' => (bool) ($this->options['cookie_httponly'] ?? true), |
| 126 | 'samesite' => self::sameSite($this->options['cookie_samesite'] ?? 'Lax'), |
| 127 | ]; |
| 128 | |
| 129 | $domain = (string) ($this->options['cookie_domain'] ?? ''); |
| 130 | if ($domain !== '') { |
| 131 | $options['domain'] = $domain; |
| 132 | } |
| 133 | |
| 134 | if (isset($this->options['cookie_partitioned'])) { |
| 135 | $options['partitioned'] = (bool) $this->options['cookie_partitioned']; |
| 136 | } |
| 137 | |
| 138 | return $options; |
| 139 | } |
| 140 | |
| 141 | /** @return 'Lax'|'Strict'|'None' */ |
| 142 | private static function sameSite(mixed $value): string |
| 143 | { |
| 144 | return match (strtolower(is_string($value) ? $value : '')) { |
| 145 | 'strict' => 'Strict', |
| 146 | 'none' => 'None', |
| 147 | default => 'Lax', |
| 148 | }; |
| 149 | } |
| 150 | } |