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<?php |
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/* |
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* This file is part of the XabbuhPandaClient package. |
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* |
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* (c) Christian Flothmann <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Xabbuh\PandaClient\Signer; |
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use Xabbuh\PandaClient\Api\Account; |
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/** |
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* Sign Panda HTTP requests. |
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* |
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* @author Christian Flothmann <[email protected]> |
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*/ |
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class PandaSigner |
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{ |
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/** |
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* Panda cloud id |
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* |
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* @var string |
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*/ |
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private $cloudId; |
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/** |
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* Panda Account |
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* |
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* @var Account |
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*/ |
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private $account; |
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private function __construct() |
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{ |
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} |
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/** |
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* Sets the cloud id. |
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* |
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* @param string $cloudId |
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*/ |
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public function setCloudId($cloudId) |
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{ |
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$this->cloudId = $cloudId; |
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} |
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/** |
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* Returns the cloud id. |
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* |
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* @return string |
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*/ |
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public function getCloudId() |
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{ |
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return $this->cloudId; |
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} |
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/** |
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* Sets the Account that contains the authorization information. |
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* |
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* @param Account $account |
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*/ |
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public function setAccount(Account $account) |
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{ |
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$this->account = $account; |
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} |
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/** |
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* Returns the Account used for generating signatures. |
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* |
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* @return Account |
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*/ |
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public function getAccount() |
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{ |
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return $this->account; |
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} |
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/** |
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* Generates the signature for a given set of request parameters and add |
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* this signature to the set of parameters. |
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* |
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* @param string $method The HTTP method |
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* @param string $path The request path |
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* @param string[] $params Request parameters |
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* |
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* @return string[] The signed parameters |
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*/ |
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public function signParams($method, $path, array $params = array()) |
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{ |
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$params = $this->completeParams($params); |
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// generate the signature |
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$params['signature'] = $this->signature($method, $path, $params); |
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return $params; |
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} |
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/** |
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* Generates the signature for an API requests based on its parameters. |
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* |
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* @param string $method The HTTP method |
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* @param string $path The request path |
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* @param string[] $params Request parameters |
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* |
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* @return string The generated signature |
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*/ |
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public function signature($method, $path, array $params = array()) |
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{ |
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$params = $this->completeParams($params); |
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ksort($params); |
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if (isset($params['file'])) { |
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unset($params['file']); |
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} |
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$canonicalQueryString = str_replace( |
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array('+', '%5B', '%5D'), |
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array('%20', '[', ']'), |
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http_build_query($params, '', '&') |
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); |
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$stringToSign = sprintf( |
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"%s\n%s\n%s\n%s", |
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strtoupper($method), |
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$this->account->getApiHost(), |
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$path, |
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$canonicalQueryString |
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); |
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$hmac = hash_hmac('sha256', $stringToSign, $this->account->getSecretKey(), true); |
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return base64_encode($hmac); |
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} |
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/** |
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* Returns a Signing instance for a Cloud. |
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* |
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* @param string $cloudId The cloud id |
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* @param Account $account The authorization details |
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* |
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* @return PandaSigner The generated Signing instance |
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*/ |
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public static function getInstance($cloudId, Account $account) |
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{ |
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$signer = new PandaSigner(); |
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$signer->setCloudId($cloudId); |
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$signer->setAccount($account); |
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return $signer; |
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} |
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private function completeParams(array $params) |
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{ |
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if (!isset($params['cloud_id'])) { |
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$params['cloud_id'] = $this->cloudId; |
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} |
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if (!isset($params['access_key'])) { |
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$params['access_key'] = $this->account->getAccessKey(); |
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} |
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if (!isset($params['timestamp'])) { |
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$oldTz = date_default_timezone_get(); |
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date_default_timezone_set('UTC'); |
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$params['timestamp'] = date('c'); |
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date_default_timezone_set($oldTz); |
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} |
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return $params; |
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} |
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} |
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xabbuh /
panda-client
