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<?php |
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namespace Transmission; |
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use Buzz\Message\Request; |
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use Buzz\Message\Response; |
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use Buzz\Client\Curl; |
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use Buzz\Client\ClientInterface; |
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/** |
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* The Client class is used to make API calls to the Transmission server |
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* |
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* @author Ramon Kleiss <[email protected]> |
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*/ |
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class Client |
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{ |
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/** |
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* @var string |
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*/ |
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const DEFAULT_HOST = 'localhost'; |
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/** |
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* @var integer |
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*/ |
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const DEFAULT_PORT = 9091; |
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/** |
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* @var string |
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*/ |
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const DEFAULT_PATH = '/transmission/rpc'; |
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/** |
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* @var string |
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*/ |
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const TOKEN_HEADER = 'X-Transmission-Session-Id'; |
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/** |
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* @var string |
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*/ |
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protected $host = self::DEFAULT_HOST; |
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/** |
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* @var integer |
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*/ |
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protected $port = self::DEFAULT_PORT; |
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/** |
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* @var string |
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*/ |
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protected $path = self::DEFAULT_PATH; |
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/** |
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* @var string |
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*/ |
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protected $token; |
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/** |
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* @var ClientInterface |
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*/ |
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protected $client; |
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/** |
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* @var string |
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*/ |
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protected $auth; |
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/** |
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* Constructor |
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* |
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* @param string $host The hostname of the Transmission server |
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* @param integer $port The port the Transmission server is listening on |
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* @param string $path The path to Transmission server rpc api |
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*/ |
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public function __construct($host = null, $port = null, $path = null) |
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{ |
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$this->token = null; |
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$this->client = new Curl(); |
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if ($host) $this->setHost($host); |
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if ($port) $this->setPort($port); |
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if ($path) $this->setPath($path); |
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} |
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/** |
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* Authenticate against the Transmission server |
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* |
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* @param string $username |
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* @param string $password |
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*/ |
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public function authenticate($username, $password) |
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{ |
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$this->auth = base64_encode($username .':'. $password); |
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} |
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/** |
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* Make an API call |
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* |
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* @param string $method |
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* @param array $arguments |
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* @return \stdClass |
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* @throws \RuntimeException |
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*/ |
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public function call($method, array $arguments) |
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{ |
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list($request, $response) = $this->compose($method, $arguments); |
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try { |
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$this->getClient()->send($request, $response); |
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} catch (\Exception $e) { |
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throw new \RuntimeException( |
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'Could not connect to Transmission', |
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0, |
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$e |
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); |
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} |
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return $this->validateResponse($response, $method, $arguments); |
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} |
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/** |
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* Get the URL used to connect to Transmission |
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* |
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* @return string |
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*/ |
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public function getUrl() |
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{ |
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return sprintf( |
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'http://%s:%d', |
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$this->getHost(), |
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$this->getPort() |
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); |
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} |
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/** |
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* Set the hostname of the Transmission server |
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* |
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* @param string $host |
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*/ |
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public function setHost($host) |
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{ |
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$this->host = (string) $host; |
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} |
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/** |
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* Get the hostname of the Transmission server |
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* |
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* @return string |
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*/ |
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public function getHost() |
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{ |
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return $this->host; |
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} |
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/** |
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* Set the port the Transmission server is listening on |
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* |
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* @param integer $port |
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*/ |
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public function setPort($port) |
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{ |
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$this->port = (integer) $port; |
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} |
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/** |
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* Get the port the Transmission server is listening on |
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* |
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* @return integer |
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*/ |
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public function getPort() |
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{ |
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return $this->port; |
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} |
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/** |
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* Set the path to Transmission server rpc api |
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* |
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* @param string $path |
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*/ |
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public function setPath($path) |
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{ |
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return $this->path = (string) $path; |
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} |
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/** |
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* Get the path to Transmission server rpc api |
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*/ |
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public function getPath() |
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{ |
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return $this->path; |
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} |
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/** |
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* Set the CSRF-token of the Transmission client |
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* |
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* @param string $token |
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*/ |
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public function setToken($token) |
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{ |
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$this->token = (string) $token; |
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} |
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/** |
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* Get the CSRF-token for the Transmission client |
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* |
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* @return string |
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*/ |
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public function getToken() |
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{ |
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return $this->token; |
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} |
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/** |
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* Set the Buzz client used to connect to Transmission |
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* |
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* @param ClientInterface $client |
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*/ |
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public function setClient(ClientInterface $client) |
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{ |
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$this->client = $client; |
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} |
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/** |
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* Get the Buzz client used to connect to Transmission |
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* |
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* @return ClientInterface |
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*/ |
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public function getClient() |
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{ |
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return $this->client; |
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} |
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/** |
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* @param string $method |
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* @param array $arguments |
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* @return array|Request[]|Response[] |
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*/ |
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protected function compose($method, $arguments) |
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{ |
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$request = new Request('POST', $this->getPath(), $this->getUrl()); |
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$request->addHeader(sprintf('%s: %s', self::TOKEN_HEADER, $this->getToken())); |
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$request->setContent(json_encode(array( |
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'method' => $method, |
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'arguments' => $arguments |
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))); |
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if (is_string($this->auth)) { |
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$request->addHeader(sprintf('Authorization: Basic %s', $this->auth)); |
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} |
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return array($request, new Response()); |
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} |
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/** |
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* @param Response $response |
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* @param string $method |
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* @param array $arguments |
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* @return \stdClass |
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* @throws \RuntimeException |
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*/ |
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protected function validateResponse($response, $method, $arguments) |
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{ |
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if (!in_array($response->getStatusCode(), array(200, 401, 409))) { |
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throw new \RuntimeException('Unexpected response received from Transmission'); |
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} |
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if ($response->getStatusCode() == 401) { |
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throw new \RuntimeException('Access to Transmission requires authentication'); |
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} |
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if ($response->getStatusCode() == 409) { |
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$this->setToken($response->getHeader(self::TOKEN_HEADER)); |
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return $this->call($method, $arguments); |
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} |
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return json_decode($response->getContent()); |
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} |
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} |
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In PHP, under loose comparison (like
==
, or!=
, orswitch
conditions), values of different types might be equal.For
string
values, the empty string''
is a special case, in particular the following results might be unexpected: