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<?php namespace Comodojo\RpcServer; |
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use \Comodojo\RpcServer\Component\Capabilities; |
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use \Comodojo\RpcServer\Component\Methods; |
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use \Comodojo\RpcServer\Component\Errors; |
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use \Comodojo\RpcServer\Request\Parameters; |
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use \Comodojo\RpcServer\Request\XmlProcessor; |
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use \Comodojo\RpcServer\Request\JsonProcessor; |
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use \Comodojo\Foundation\Logging\Manager as LogManager; |
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use \Comodojo\Xmlrpc\XmlrpcEncoder; |
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use \Comodojo\Xmlrpc\XmlrpcDecoder; |
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use \phpseclib\Crypt\AES; |
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use \Psr\Log\LoggerInterface; |
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use \Comodojo\Exception\RpcException; |
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use \Comodojo\Exception\XmlrpcException; |
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use \InvalidArgumentException; |
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use \Exception; |
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/** |
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* The RpcServer main class. |
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* |
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* @package Comodojo Spare Parts |
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* @author Marco Giovinazzi <[email protected]> |
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* @license MIT |
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* |
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* LICENSE: |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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* THE SOFTWARE. |
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*/ |
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class RpcServer { |
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/** |
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* Capabilities collector |
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* |
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* @const string |
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*/ |
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const XMLRPC = 'xml'; |
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/** |
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* Capabilities collector |
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* |
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* @const string |
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*/ |
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const JSONRPC = 'json'; |
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/** |
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* Capabilities collector |
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* |
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* @var Capabilities |
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*/ |
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private $capabilities; |
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/** |
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* RpcMethods collector |
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* |
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* @var Methods |
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*/ |
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private $methods; |
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/** |
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* Standard Rpc Errors collector |
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* |
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* @var Errors |
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*/ |
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private $errors; |
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/** |
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* The request payload, better the RAW export of 'php://input' |
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* |
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* @var string |
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*/ |
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private $payload; |
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/** |
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* Encryption key, in case of encrypted transport |
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* |
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* @var string |
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*/ |
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private $encrypt; |
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/** |
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* Current encoding |
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* |
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* @var string |
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*/ |
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private $encoding = 'utf-8'; |
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/** |
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* Current protocol |
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* |
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* @var string |
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*/ |
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private $protocol; |
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/** |
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* Supported RPC protocols |
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* |
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* @var array |
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*/ |
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private $supported_protocols = ['xml', 'json']; |
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/** |
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* Internal marker (encryption) |
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* |
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* @var bool |
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*/ |
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private $request_is_encrypted = false; |
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/** |
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* Current logger |
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* |
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* @var LoggerInterface |
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*/ |
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private $logger; |
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/** |
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* Class constructor |
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* |
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* @param string $protocol |
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* |
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* @throws Exception |
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* @throws InvalidArgumentException |
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*/ |
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public function __construct($protocol, LoggerInterface $logger = null) { |
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$this->logger = is_null($logger) ? LogManager::create('rpcserver', false)->getLogger() : $logger; |
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try { |
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// setup protocol |
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$this->setProtocol($protocol); |
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// init components |
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$this->capabilities = new Capabilities($this->logger); |
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$this->methods = new Methods($this->logger); |
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$this->errors = new Errors($this->logger); |
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// populate components |
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self::setIntrospectionMethods($this->methods); |
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self::setCapabilities($this->capabilities); |
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self::setErrors($this->errors); |
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} catch (Exception $e) { |
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throw $e; |
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} |
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$this->logger->debug("RpcServer init complete, protocol $protocol"); |
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} |
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/** |
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* Set RPC protocol (json or xml) |
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* |
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* @param string $protocol |
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* |
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* @return self |
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* @throws InvalidArgumentException |
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*/ |
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public function setProtocol($protocol) { |
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if ( empty($protocol) || !in_array($protocol, $this->supported_protocols) ) throw new InvalidArgumentException('Invalid or unsupported RPC protocol'); |
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$this->protocol = $protocol; |
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return $this; |
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} |
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/** |
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* Get RPC protocol |
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* |
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* @return string |
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*/ |
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public function getProtocol() { |
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return $this->protocol; |
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} |
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/** |
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* Set request payload, raw format |
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* |
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* @return self |
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*/ |
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public function setPayload($payload) { |
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$this->payload = $payload; |
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return $this; |
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} |
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/** |
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* Get request payload |
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* |
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* @return string |
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*/ |
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public function getPayload() { |
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return $this->payload; |
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} |
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public function setEncoding($encoding) { |
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$this->encoding = $encoding; |
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return $this; |
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} |
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public function getEncoding() { |
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return $this->encoding; |
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} |
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/** |
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* Set encryption key; this will enable the NOT-STANDARD payload encryption |
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* |
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* @param string $key The encryption key |
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* |
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* @return self |
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* @throws InvalidArgumentException |
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*/ |
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public function setEncryption($key) { |
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if ( empty($key) ) throw new InvalidArgumentException("Shared key cannot be empty"); |
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$this->encrypt = $key; |
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return $this; |
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} |
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/** |
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* Get the ecryption key or null if no encryption is selected |
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* |
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* @return string |
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*/ |
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public function getEncryption() { |
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return $this->encrypt; |
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} |
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/** |
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* Get capabilities object |
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* |
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* @deprecated |
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* @see Parameters::getCapabilities() |
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* @return Capabilities |
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*/ |
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public function capabilities() { |
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return $this->getCapabilities(); |
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} |
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/** |
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* Get capabilities object |
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* |
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* @deprecated |
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* @see Parameters::getCapabilities() |
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* @return Capabilities |
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*/ |
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public function getCapabilities() { |
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return $this->capabilities; |
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} |
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/** |
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* Get methods object |
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* |
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* @deprecated |
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* @see Parameters::getMethods() |
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* @return Methods |
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*/ |
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public function methods() { |
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return $this->getMethods(); |
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} |
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/** |
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* Get methods object |
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* |
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* @return Methods |
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*/ |
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public function getMethods() { |
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return $this->methods; |
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} |
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/** |
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* Get errors object |
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* |
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* @deprecated |
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* @see Parameters::getErrors() |
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* @return Errors |
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*/ |
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public function errors() { |
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return $this->getErrors(); |
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} |
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/** |
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* Get errors object |
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* |
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* @return Errors |
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*/ |
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public function getErrors() { |
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return $this->errors; |
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} |
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/** |
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* Serve request |
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* |
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* @return string |
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* @throws Exception |
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*/ |
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public function serve() { |
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$this->logger->notice("Start serving request"); |
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$parameters_object = new Parameters($this->capabilities, $this->methods, $this->errors, $this->logger, $this->protocol); |
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try { |
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$this->logger->debug("Received payload: ".$this->payload); |
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$payload = $this->uncan($this->payload); |
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356
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$this->logger->debug("Decoded payload", (array) $payload); |
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if ( $this->protocol == self::XMLRPC ) $result = XmlProcessor::process($payload, $parameters_object, $this->logger); |
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else if ( $this->protocol == self::JSONRPC ) $result = JsonProcessor::process($payload, $parameters_object, $this->logger); |
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else throw new Exception('Invalid or unsupported RPC protocol'); |
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} catch (RpcException $re) { |
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return $this->can($re, true); |
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368
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} catch (Exception $e) { |
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throw $e; |
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} |
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return $this->can($result, false); |
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} |
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378
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/** |
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* Uncan the provided payload |
380
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* |
381
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* @param string $payload |
382
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* |
383
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* @return mixed |
384
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* @throws RpcException |
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*/ |
386
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84 |
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private function uncan($payload) { |
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388
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84 |
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$decoded = null; |
389
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390
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84 |
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if ( empty($payload) || !is_string($payload) ) throw new RpcException("Invalid Request", -32600); |
391
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392
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84 |
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if ( substr($payload, 0, 27) == 'comodojo_encrypted_request-' ) { |
393
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394
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3 |
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if ( empty($this->encrypt) ) throw new RpcException("Transport error", -32300); |
395
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396
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3 |
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$this->request_is_encrypted = true; |
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398
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3 |
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$aes = new AES(); |
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400
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3 |
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$aes->setKey($this->encrypt); |
401
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402
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3 |
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$payload = $aes->decrypt(base64_decode(substr($payload, 27))); |
403
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404
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3 |
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if ( $payload == false ) throw new RpcException("Transport error", -32300); |
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405
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406
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} |
407
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408
|
84 |
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if ( $this->protocol == 'xml' ) { |
409
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410
|
39 |
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$decoder = new XmlrpcDecoder(); |
411
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412
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try { |
413
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414
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39 |
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$decoded = $decoder->decodeCall($payload); |
415
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416
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} catch (XmlrpcException $xe) { |
417
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418
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39 |
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throw new RpcException("Parse error", -32700); |
419
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420
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} |
421
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422
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45 |
|
} else if ( $this->protocol == 'json' ) { |
423
|
|
|
|
424
|
45 |
|
if ( strtolower($this->encoding) != 'utf-8' ) { |
425
|
|
|
|
426
|
|
|
$payload = mb_convert_encoding($payload, "UTF-8", strtoupper($this->encoding)); |
427
|
|
|
|
428
|
|
|
} |
429
|
|
|
|
430
|
45 |
|
$decoded = json_decode($payload, false /*DO RAW conversion*/); |
431
|
|
|
|
432
|
45 |
|
if ( is_null($decoded) ) throw new RpcException("Parse error", -32700); |
433
|
|
|
|
434
|
|
|
} else { |
435
|
|
|
|
436
|
|
|
throw new RpcException("Transport error", -32300); |
437
|
|
|
|
438
|
|
|
} |
439
|
|
|
|
440
|
84 |
|
return $decoded; |
441
|
|
|
|
442
|
|
|
} |
443
|
|
|
|
444
|
|
|
/** |
445
|
|
|
* Can the RPC response |
446
|
|
|
* |
447
|
|
|
* @param mixed $response |
448
|
|
|
* @param boolean $error |
449
|
|
|
* |
450
|
|
|
* @return string |
451
|
|
|
* @throws RpcException |
452
|
|
|
*/ |
453
|
84 |
|
private function can($response, $error) { |
454
|
|
|
|
455
|
84 |
|
$encoded = null; |
456
|
|
|
|
457
|
84 |
|
if ( $this->protocol == 'xml' ) { |
458
|
|
|
|
459
|
39 |
|
$encoder = new XmlrpcEncoder(); |
460
|
|
|
|
461
|
39 |
|
$encoder->setEncoding($this->encoding); |
462
|
|
|
|
463
|
|
|
try { |
464
|
|
|
|
465
|
39 |
|
$encoded = $error ? $encoder->encodeError($response->getCode(), $response->getMessage()) : $encoder->encodeResponse($response); |
466
|
|
|
|
467
|
|
|
} catch (XmlrpcException $xe) { |
468
|
|
|
|
469
|
|
|
$this->logger->error($xe->getMessage()); |
470
|
|
|
|
471
|
39 |
|
$encoded = $encoder->encodeError(-32500, "Application error"); |
472
|
|
|
|
473
|
|
|
} |
474
|
|
|
|
475
|
|
|
} else { |
476
|
|
|
|
477
|
45 |
|
if ( strtolower($this->encoding) != 'utf-8' && !is_null($response) ) { |
478
|
|
|
|
479
|
|
|
array_walk_recursive($response, function(&$entry) { |
480
|
|
|
|
481
|
|
|
if ( is_string($entry) ) { |
482
|
|
|
|
483
|
|
|
$entry = mb_convert_encoding($entry, strtoupper($this->encoding), "UTF-8"); |
484
|
|
|
|
485
|
|
|
} |
486
|
|
|
|
487
|
|
|
}); |
488
|
|
|
|
489
|
|
|
} |
490
|
|
|
|
491
|
|
|
// json will not return any RpcException; errors (in case) are handled directly by processor |
492
|
|
|
|
493
|
45 |
|
$encoded = is_null($response) ? null : json_encode($response/*, JSON_NUMERIC_CHECK*/); |
494
|
|
|
|
495
|
|
|
} |
496
|
|
|
|
497
|
84 |
|
$this->logger->debug("Plain response: $encoded"); |
498
|
|
|
|
499
|
84 |
|
if ( $this->request_is_encrypted /* && !empty($encoded) */ ) { |
500
|
|
|
|
501
|
3 |
|
$aes = new AES(); |
502
|
|
|
|
503
|
3 |
|
$aes->setKey($this->encrypt); |
504
|
|
|
|
505
|
3 |
|
$encoded = 'comodojo_encrypted_response-'.base64_encode($aes->encrypt($encoded)); |
506
|
|
|
|
507
|
3 |
|
$this->logger->debug("Encrypted response: $encoded"); |
508
|
|
|
|
509
|
|
|
} |
510
|
|
|
|
511
|
84 |
|
return $encoded; |
512
|
|
|
|
513
|
|
|
} |
514
|
|
|
|
515
|
|
|
/** |
516
|
|
|
* Inject introspection and reserved RPC methods |
517
|
|
|
* |
518
|
|
|
* @param Methods $methods |
519
|
|
|
*/ |
520
|
87 |
|
private static function setIntrospectionMethods($methods) { |
521
|
|
|
|
522
|
87 |
|
$methods->add(RpcMethod::create("system.getCapabilities", '\Comodojo\RpcServer\Reserved\GetCapabilities::execute') |
523
|
87 |
|
->setDescription("This method lists all the capabilites that the RPC server has: the (more or less standard) extensions to the RPC spec that it adheres to") |
524
|
87 |
|
->setReturnType('struct') |
525
|
|
|
); |
526
|
|
|
|
527
|
87 |
|
$methods->add(RpcMethod::create("system.listMethods", '\Comodojo\RpcServer\Introspection\ListMethods::execute') |
528
|
87 |
|
->setDescription("This method lists all the methods that the RPC server knows how to dispatch") |
529
|
87 |
|
->setReturnType('array') |
530
|
|
|
); |
531
|
|
|
|
532
|
87 |
|
$methods->add(RpcMethod::create("system.methodHelp", '\Comodojo\RpcServer\Introspection\MethodHelp::execute') |
533
|
87 |
|
->setDescription("Returns help text if defined for the method passed, otherwise returns an empty string") |
534
|
87 |
|
->setReturnType('string') |
535
|
87 |
|
->addParameter('string', 'method') |
536
|
|
|
); |
537
|
|
|
|
538
|
87 |
|
$methods->add(RpcMethod::create("system.methodSignature", '\Comodojo\RpcServer\Introspection\MethodSignature::execute') |
539
|
87 |
|
->setDescription("Returns an array of known signatures (an array of arrays) for the method name passed.". |
540
|
87 |
|
"If no signatures are known, returns a none-array (test for type != array to detect missing signature)") |
541
|
87 |
|
->setReturnType('array') |
542
|
87 |
|
->addParameter('string', 'method') |
543
|
|
|
); |
544
|
|
|
|
545
|
87 |
|
$methods->add(RpcMethod::create("system.multicall", '\Comodojo\RpcServer\Reserved\Multicall::execute') |
546
|
87 |
|
->setDescription("Boxcar multiple RPC calls in one request. See http://www.xmlrpc.com/discuss/msgReader\$1208 for details") |
547
|
87 |
|
->setReturnType('array') |
548
|
87 |
|
->addParameter('array', 'requests') |
549
|
|
|
); |
550
|
|
|
|
551
|
87 |
|
} |
552
|
|
|
|
553
|
|
|
/** |
554
|
|
|
* Inject supported capabilities |
555
|
|
|
* |
556
|
|
|
* @param Capabilities $capabilities |
557
|
|
|
*/ |
558
|
87 |
|
private static function setCapabilities($capabilities) { |
559
|
|
|
|
560
|
|
|
$supported_capabilities = array( |
561
|
87 |
|
'xmlrpc' => array('http://www.xmlrpc.com/spec', 1), |
562
|
|
|
'system.multicall' => array('http://www.xmlrpc.com/discuss/msgReader$1208', 1), |
563
|
|
|
'introspection' => array('http://phpxmlrpc.sourceforge.net/doc-2/ch10.html', 2), |
564
|
|
|
'nil' => array('http://www.ontosys.com/xml-rpc/extensions.php', 1), |
565
|
|
|
'faults_interop' => array('http://xmlrpc-epi.sourceforge.net/specs/rfc.fault_codes.php', 20010516), |
566
|
|
|
'json-rpc' => array('http://www.jsonrpc.org/specification', 2) |
567
|
|
|
); |
568
|
|
|
|
569
|
87 |
|
foreach ( $supported_capabilities as $capability => $values ) { |
570
|
|
|
|
571
|
87 |
|
$capabilities->add($capability, $values[0], $values[1]); |
572
|
|
|
|
573
|
|
|
} |
574
|
|
|
|
575
|
87 |
|
} |
576
|
|
|
|
577
|
|
|
/** |
578
|
|
|
* Inject standard and RPC errors |
579
|
|
|
* |
580
|
|
|
* @param Errors $errors |
581
|
|
|
*/ |
582
|
87 |
|
private static function setErrors($errors) { |
583
|
|
|
|
584
|
|
|
$std_rpc_errors = array( |
585
|
87 |
|
-32700 => "Parse error", |
586
|
|
|
-32701 => "Parse error - Unsupported encoding", |
587
|
|
|
-32702 => "Parse error - Invalid character for encoding", |
588
|
|
|
-32600 => "Invalid Request", |
589
|
|
|
-32601 => "Method not found", |
590
|
|
|
-32602 => "Invalid params", |
591
|
|
|
-32603 => "Internal error", |
592
|
|
|
-32500 => "Application error", |
593
|
|
|
-32400 => "System error", |
594
|
|
|
-32300 => "Transport error", |
595
|
|
|
// Predefined Comodojo Errors |
596
|
|
|
-31000 => "Multicall is available only in XMLRPC", |
597
|
|
|
-31001 => "Recursive system.multicall forbidden" |
598
|
|
|
); |
599
|
|
|
|
600
|
87 |
|
foreach ( $std_rpc_errors as $code => $message ) { |
601
|
|
|
|
602
|
87 |
|
$errors->add($code, $message); |
603
|
|
|
|
604
|
|
|
} |
605
|
|
|
|
606
|
87 |
|
} |
607
|
|
|
|
608
|
|
|
} |
609
|
|
|
|