security.php

Cake Framwork , Excellent

		} else {
			return $this->__callback($controller, $this->blackHoleCallback, array($error));
		}
	}
/**
 * Sets the actions that require a $method HTTP request, or empty for all actions
 *
 * @param string $method The HTTP method to assign controller actions to
 * @param array $actions Controller actions to set the required HTTP method to.
 * @access private
 */
	function __requireMethod($method, $actions = array()) {
		$this->{'require' . $method} = ife(empty($actions), array('*'), $actions);
	}
/**
 * Check if HTTP methods are required
 *
 * @param object $controller Instantiating controller
 * @return bool true if $method is required
 * @access private
 */
	function __methodsRequired(&$controller) {
		foreach (array('Post', 'Get', 'Put', 'Delete') as $method) {
			$property = 'require' . $method;
			if (is_array($this->$property) && !empty($this->$property)) {
				$require = array_map('strtolower', $this->$property);

				if (in_array($this->__action, $require) || $this->$property == array('*')) {
					if (!$this->RequestHandler->{'is' . $method}()) {
						if (!$this->blackHole($controller, strtolower($method))) {
							return null;
						}
					}
				}
			}
		}
		return true;
	}
/**
 * Check if access requires secure connection
 *
 * @param object $controller Instantiating controller
 * @return bool true if secure connection required
 * @access private
 */
	function __secureRequired(&$controller) {
		if (is_array($this->requireSecure) && !empty($this->requireSecure)) {
			$requireSecure = array_map('strtolower', $this->requireSecure);

			if (in_array($this->__action, $requireSecure) || $this->requireSecure == array('*')) {
				if (!$this->RequestHandler->isSSL()) {
					if (!$this->blackHole($controller, 'secure')) {
						return null;
					}
				}
			}
		}
		return true;
	}
/**
 * Check if authentication is required
 *
 * @param object $controller Instantiating controller
 * @return bool true if authentication required
 * @access private
 */
	function __authRequired(&$controller) {
		if (is_array($this->requireAuth) && !empty($this->requireAuth) && !empty($controller->data)) {
			$requireAuth = array_map('strtolower', $this->requireAuth);

			if (in_array($this->__action, $requireAuth) || $this->requireAuth == array('*')) {
				if (!isset($controller->data['__Token'] )) {
					if (!$this->blackHole($controller, 'auth')) {
						return null;
					}
				}

				if ($this->Session->check('_Token')) {
					$tData = unserialize($this->Session->read('_Token'));

					if (!empty($tData['allowedControllers']) && !in_array($controller->params['controller'], $tData['allowedControllers']) || !empty($tData['allowedActions']) && !in_array($controller->params['action'], $tData['allowedActions'])) {
						if (!$this->blackHole($controller, 'auth')) {
							return null;
						}
					}
				} else {
					if (!$this->blackHole($controller, 'auth')) {
						return null;
					}
				}
			}
		}
		return true;
	}
/**
 * Check if login is required
 *
 * @param object $controller Instantiating controller
 * @return bool true if login is required
 * @access private
 */
	function __loginRequired(&$controller) {
		if (is_array($this->requireLogin) && !empty($this->requireLogin)) {
			$requireLogin = array_map('strtolower', $this->requireLogin);

			if (in_array($this->__action, $requireLogin) || $this->requireLogin == array('*')) {
				$login = $this->loginCredentials($this->loginOptions['type']);

				if ($login == null) {
					// User hasn't been authenticated yet
					header($this->loginRequest());

					if (!empty($this->loginOptions['prompt'])) {
						$this->__callback($controller, $this->loginOptions['prompt']);
					} else {
						$this->blackHole($controller, 'login');
					}
				} else {
					if (isset($this->loginOptions['login'])) {
						$this->__callback($controller, $this->loginOptions['login'], array($login));
					} else {
						if (strtolower($this->loginOptions['type']) == 'digest') {
							// Do digest authentication
							if ($login && isset($this->loginUsers[$login['username']])) {
								if ($login['response'] == $this->generateDigestResponseHash($login)) {
									return true;
								}
							}
							$this->blackHole($controller, 'login');
						} else {
							if (!(in_array($login['username'], array_keys($this->loginUsers)) && $this->loginUsers[$login['username']] == $login['password'])) {
								$this->blackHole($controller, 'login');
							}
						}
					}
				}
			}
		}
		return true;
	}
/**
 * Validate submitted form
 *
 * @param object $controller Instantiating controller
 * @return bool true if submitted form is valid
 * @access private
 */
	function __validatePost(&$controller) {
		if (!empty($controller->data)) {
			if (!isset($controller->data['__Token'])) {
				if (!$this->blackHole($controller, 'auth')) {
					return null;
				}
			}
			$token = $controller->data['__Token']['key'];

			if ($this->Session->check('_Token')) {
				$tData = unserialize($this->Session->read('_Token'));

				if ($tData['expires'] < time() || $tData['key'] !== $token) {
					if (!$this->blackHole($controller, 'auth')) {
						return null;
					}
				}
			}

			if (!isset($controller->data['__Token']['fields'])) {
				if (!$this->blackHole($controller, 'auth')) {
					return null;
				}
			}
			$form = $controller->data['__Token']['fields'];
			$check = $controller->data;
			unset($check['__Token']['fields']);

			if (!empty($this->disabledFields)) {
				foreach ($check as $model => $fields) {
					foreach ($fields as $field => $value) {
						$key[] = $model . '.' . $field;
					}
					unset($field);
				}

				foreach ($this->disabledFields as $value) {
					$parts = preg_split('/\/|\./', $value);

					if (count($parts) == 1) {
						$key1[] = $controller->modelClass . '.' . $parts['0'];
					} elseif (count($parts) == 2) {
						$key1[] = $parts['0'] . '.' . $parts['1'];
					}
				}

				foreach ($key1 as $value) {
					if (in_array($value, $key)) {
						$remove = explode('.', $value);
						unset($check[$remove['0']][$remove['1']]);
					} elseif (in_array('_' . $value, $key)) {
						$remove = explode('.', $value);
						$controller->data[$remove['0']][$remove['1']] = $controller->data['_' . $remove['0']][$remove['1']];
						unset($check['_' . $remove['0']][$remove['1']]);
					}
				}
			}
			ksort($check);
			foreach ($check as $key => $value) {
				$merge = array();
				if ($key === '__Token') {
					$field[$key] = $value;
					continue;
				}
				$string = substr($key, 0, 1);

				if ($string === '_') {
					$newKey = substr($key, 1);

					if (!isset($controller->data[$newKey])) {
						$controller->data[$newKey] = array();

						if (array_keys($controller->data[$key]) === array($newKey)) {
							$field[$newKey] = array($newKey);
						}
					}

					if (is_array($value)) {
						$values = array_values($value);
						$k = array_keys($value);
						$count = count($k);

						if (is_numeric($k[0])) {
							for ($i = 0; $count > $i; $i++) {
								foreach ($values[$i] as $key2 => $value1) {
									if ($value1 === '0') {
										$field[$newKey][$i] = array_merge($field[$newKey][$i], array($key2));
									}
								}
							}
							$controller->data[$newKey] = Set::pushDiff($controller->data[$key], $controller->data[$newKey]);
						}

						for ($i = 0; $count > $i; $i++) {
							$field[$key][$k[$i]] = $values[$i];
						}

						foreach ($k as $lookup) {
							if (isset($controller->data[$newKey][$lookup])) {
								unset($controller->data[$key][$lookup]);
							} elseif ($controller->data[$key][$lookup] === '0') {
								$merge[] = $lookup;
							}
						}

						if (!is_numeric($k[0])) {
							if (isset($field[$newKey])) {
								$field[$newKey] = array_merge($merge, $field[$newKey]);
							} else {
								$field[$newKey] = $merge;
							}
							$controller->data[$newKey] = Set::pushDiff($controller->data[$key], $controller->data[$newKey]);
						}
						unset($controller->data[$key]);
					}
					continue;
				}
				if (is_array($value)) {
					$keys = array_keys($value);
				} else {
					$keys = $value;
				}

				if (isset($field[$key])) {
					$field[$key] = array_merge($field[$key], $keys);
				} elseif (is_array($keys) && !empty($keys) && is_numeric($keys[0])) {
					foreach ($value as $fields) {
						$merge[] = array_keys($fields);
					}
					$field[$key] = $merge;
				} else if (is_array($keys)) {
					$field[$key] = $keys;
				} else {
					$field[] = $key;
				}
			}

			foreach ($field as $key => $value) {
				if ($key[0] != '_' && is_array($field[$key])) {
					sort($field[$key]);
				}
			}
			ksort($field, SORT_STRING);

			$check = urlencode(Security::hash(serialize($field) . Configure::read('Security.salt')));
			if ($form !== $check) {
				if (!$this->blackHole($controller, 'auth')) {
					return null;
				}
			}
		}
		return true;
	}
/**
 * Add authentication key for new form posts
 *
 * @param object $controller Instantiating controller
 * @return bool Success
 * @access private
 */
	function __generateToken(&$controller) {
		if (!isset($controller->params['requested']) || $controller->params['requested'] != 1) {
			$authKey = Security::generateAuthKey();
			$expires = strtotime('+' . Security::inactiveMins() . ' minutes');
			$token = array(
				'key' => $authKey,
				'expires' => $expires,
				'allowedControllers' => $this->allowedControllers,
				'allowedActions' => $this->allowedActions,
				'disabledFields' => $this->disabledFields
			);

			if (!isset($controller->data)) {
				$controller->data = array();
			}

			if ($this->Session->check('_Token')) {
				$tData = unserialize($this->Session->read('_Token'));
				if (isset($tData['expires']) && $tData['expires'] > time() && isset($tData['key'])) {
					$token['key'] = $tData['key'];
				}
			}
			$controller->params['_Token'] = $token;
			$this->Session->write('_Token', serialize($token));
		}
		return true;
	}
/**
 * Sets the default login options for an HTTP-authenticated request
 *
 * @param array $options Default login options
 * @access private
 */
	function __setLoginDefaults(&$options) {
		$options = array_merge(array(
			'type' => 'basic',
			'realm' => env('SERVER_NAME'),
			'qop' => 'auth',
			'nonce' => String::uuid()
		), array_filter($options));
		$options = array_merge(array('opaque' => md5($options['realm'])), $options);
	}
/**
 * Calls a controller callback method
 *
 * @param object $controller Controller to run callback on
 * @param string $method Method to execute
 * @param array $params Parameters to send to method
 * @return mixed Controller callback method's response
 * @access private
 */
	function __callback(&$controller, $method, $params = array()) {
		if (is_callable(array($controller, $method))) {
			return call_user_func_array(array(&$controller, $method), empty($params) ? null : $params);
		} else {
			// Debug::warning('Callback method ' . $method . ' in controller ' . get_class($controller)
			return null;
		}
	}
}
?>