| 20 | | // TODO: catch exception from web service method and set error in JSON-Response |
|---|
| 21 | | // TODO: paramAnnotation could define an individual Range for the RegExValidator |
|---|
| 22 | | |
|---|
| 23 | | const CLASS_AND_METHOD_PATTERN = '^([a-zA-Z0-9_]+\.[a-zA-Z0-9_]+)$'; |
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| 24 | | const PARAM_PATTERN = '^[a-zA-Z0-9_]+$'; |
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| 25 | | const ID_PATTERN = '^\d{6,7}$'; |
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| 26 | | const JSON_PATTERN = '^{\"method\":\"(.*)\",\"params\"(.*),\"id\":\"\d{6,7}\"}$'; |
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| 27 | | |
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| 28 | | protected $jsonRpcResponse = array ( |
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| 29 | | 'id' => null, |
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| 30 | | 'result' => null, |
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| 31 | | 'error' => null, |
|---|
| 32 | | ); |
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| 33 | | |
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| 34 | | protected $classMap = array( |
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| 35 | | 'BuddyQuoteService' => '_test.BuddyQuoteService' |
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| 36 | | ); |
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| 37 | | |
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| 38 | | // storing information for reflection calls |
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| 39 | | protected $classObj = null; |
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| 40 | | protected $methodObj = null; |
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| 41 | | |
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| 42 | | protected function getReflectionObject($class) { |
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| 43 | | $fqClass = $this->classMap[$class]; |
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| 44 | | $classObj = new stubReflectionClass($fqClass); |
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| 45 | | return $classObj; |
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| 46 | | } |
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| 47 | | |
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| 48 | | protected function fillResponse($requestId, $result) { |
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| 49 | | $error = $this->getError(); |
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| 50 | | if (isset($result) && !isset($error)) { |
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| 51 | | $this->setJsonResponseObject($requestId, $result, null); |
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| 52 | | } else { |
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| 53 | | $this->setJsonResponseObject($requestId, null, $error); |
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| 54 | | } |
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| 55 | | } |
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| 56 | | |
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| 57 | | protected function setError($msg) { |
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| 58 | | $this->jsonRpcResponse['error'] = $msg; |
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| 59 | | } |
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| 60 | | |
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| 61 | | protected function getError() { |
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| 62 | | return $this->jsonRpcResponse['error']; |
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| 63 | | } |
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| 64 | | |
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| 65 | | private function setJsonResponseObject($id, $result, $error) { |
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| 66 | | $this->jsonRpcResponse['id'] = $id; |
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| 67 | | if (isset($result)) { |
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| 68 | | $this->jsonRpcResponse['result'] = utf8_encode($result); |
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| 69 | | } else { |
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| 70 | | $this->jsonRpcResponse['result'] = $result; |
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| 71 | | } |
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| 72 | | $this->jsonRpcResponse['error'] = $error; |
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| 73 | | } |
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| 74 | | |
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| 75 | | public function getJsonResponseObject() { |
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| 76 | | return json_encode($this->jsonRpcResponse); |
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| 77 | | } |
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| 78 | | |
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| 79 | | protected function isRegisteredClass($className) { |
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| 80 | | $registeredServices = key($this->classMap); |
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| 81 | | for ($i = 0; $i < count($registeredServices); $i++) { |
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| 82 | | if ($registeredServices === $className) { |
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| 83 | | $this->classObj = $this->getReflectionObject($className); |
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| 84 | | return true; |
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| 85 | | } |
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| 86 | | } |
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| 87 | | $this->setError('class is not registered as web service'); |
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| 88 | | return false; |
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| 89 | | } |
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| 90 | | |
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| 91 | | protected function hasWebServiceMethod($methodName) { |
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| 92 | | $methods = $this->classObj->getMethods(); |
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| 93 | | foreach ($methods as $method) { |
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| 94 | | if ($method->getName() === $methodName) { |
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| 95 | | $this->methodObj = $method; |
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| 96 | | return true; |
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| 97 | | } |
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| 98 | | } |
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| 99 | | $this->setError('no such method availible as web service'); |
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| 100 | | return false; |
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| 101 | | } |
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| 102 | | |
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| 103 | | protected function retrieveGETParams(){ |
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| 104 | | $paramValues = array(); |
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| 105 | | $paramPattern = new stubRegexValidator(self::PARAM_PATTERN); |
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| 106 | | foreach ($this->methodObj->getParameters() as $param) { |
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| 107 | | $paramName = $param->getName(); |
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| 108 | | $currentRequest = $this->request->getValidatedValue($paramPattern, $paramName); |
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| 109 | | if (!isset($currentRequest)) { |
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| 110 | | $this->setError('GET-Parameter: '.$paramName.' fehlt.'); |
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| 111 | | } |
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| 112 | | array_push($paramValues, $currentRequest); |
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| 113 | | } |
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| 114 | | return $paramValues; |
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| 115 | | } |
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| 116 | | |
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| 117 | | protected function invokeWebServiceMethod($params) { |
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| 118 | | $result = null; |
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| 119 | | $obj = $this->classObj->newInstance(); |
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| 120 | | if ($this->hasRequiredNumberOfParams($params)) { |
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| 121 | | $result = $this->methodObj->invokeArgs($obj, $params); |
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| 122 | | } else { |
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| 123 | | $this->setError('number of required parameters overshooted or undershooted'); |
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| 124 | | $result = null; |
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| 125 | | } |
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| 126 | | return $result; |
|---|
| 127 | | } |
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| 128 | | |
|---|
| 129 | | private function hasRequiredNumberOfParams($params){ |
|---|
| 130 | | return $this->methodObj->getNumberOfRequiredParameters() == count($params) ? true : false; |
|---|
| 131 | | } |
|---|
| 132 | | |
|---|
| 133 | | protected function checkRequestId($id) { |
|---|
| 134 | | if (!isset($id)) { |
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| 135 | | $this->setError('id has to have 6-7 digits'); |
|---|
| 136 | | } |
|---|
| 137 | | } |
|---|
| 138 | | |
|---|
| 139 | | /** |
|---|
| 140 | | * doGET() only for testing the service |
|---|
| 141 | | * |
|---|
| 142 | | * http://localhost/stubbles/docroot/json.php? |
|---|
| 143 | | * <paramName>=2 |
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| 144 | | * [&<paramName>=3]* |
|---|
| 145 | | * &method=<classname>.<methodname> |
|---|
| 146 | | * &id=186252 |
|---|
| 147 | | * |
|---|
| 148 | | */ |
|---|
| 149 | | public function doGET() { |
|---|
| 150 | | $classAndMethodPattern = new stubRegexValidator(self::CLASS_AND_METHOD_PATTERN); |
|---|
| 151 | | $classAndMethod = $this->request->getValidatedValue($classAndMethodPattern, 'method'); |
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| 152 | | |
|---|
| 153 | | if (isset($classAndMethod)) { |
|---|
| 154 | | list($className, $methodName) = explode('.', $classAndMethod); |
|---|
| 155 | | |
|---|
| 156 | | if ($this->isRegisteredClass($className) && $this->hasWebServiceMethod($methodName)) { |
|---|
| | 27 | /** |
|---|
| | 28 | * Regexp to validate method param |
|---|
| | 29 | */ |
|---|
| | 30 | const CLASS_AND_METHOD_PATTERN = '^([a-zA-Z0-9_]+\.[a-zA-Z0-9_]+)$'; |
|---|
| | 31 | |
|---|
| | 32 | /** |
|---|
| | 33 | * Regexp to validate param param |
|---|
| | 34 | */ |
|---|
| | 35 | const PARAM_PATTERN = '^[a-zA-Z0-9_]+$'; |
|---|
| | 36 | |
|---|
| | 37 | /** |
|---|
| | 38 | * Regexp to validate id param |
|---|
| | 39 | */ |
|---|
| | 40 | const ID_PATTERN = '^\d{6,7}$'; |
|---|
| | 41 | |
|---|
| | 42 | /** |
|---|
| | 43 | * Regexp to validate json param |
|---|
| | 44 | */ |
|---|
| | 45 | const JSON_PATTERN = '^{\"method\":\"(.*)\",\"params\"(.*),\"id\":\"\d{6,7}\"}$'; |
|---|
| | 46 | |
|---|
| | 47 | /** |
|---|
| | 48 | * The JSON response |
|---|
| | 49 | * |
|---|
| | 50 | * @var array |
|---|
| | 51 | */ |
|---|
| | 52 | protected $jsonRpcResponse = array ( |
|---|
| | 53 | 'id' => null, |
|---|
| | 54 | 'result' => null, |
|---|
| | 55 | 'error' => null, |
|---|
| | 56 | ); |
|---|
| | 57 | |
|---|
| | 58 | |
|---|
| | 59 | /** |
|---|
| | 60 | * Map client classes to fully qualified class names |
|---|
| | 61 | * |
|---|
| | 62 | * @var array |
|---|
| | 63 | * @todo read this from a configuration file |
|---|
| | 64 | */ |
|---|
| | 65 | protected $classMap = array( |
|---|
| | 66 | 'BuddyQuoteService' => '_test.BuddyQuoteService' |
|---|
| | 67 | ); |
|---|
| | 68 | |
|---|
| | 69 | /** |
|---|
| | 70 | * The class used in the service |
|---|
| | 71 | * |
|---|
| | 72 | * @var stubReflectionClass |
|---|
| | 73 | */ |
|---|
| | 74 | protected $classObj = null; |
|---|
| | 75 | |
|---|
| | 76 | /** |
|---|
| | 77 | * The method used in the service |
|---|
| | 78 | * |
|---|
| | 79 | * @var stubReflectionMethod |
|---|
| | 80 | */ |
|---|
| | 81 | protected $methodObj = null; |
|---|
| | 82 | |
|---|
| | 83 | /** |
|---|
| | 84 | * Process the request |
|---|
| | 85 | * |
|---|
| | 86 | * This method only dispatches the request to different methods. |
|---|
| | 87 | * |
|---|
| | 88 | * @todo Create and send the dynamically created client code |
|---|
| | 89 | */ |
|---|
| | 90 | public function doProcess() { |
|---|
| | 91 | |
|---|
| | 92 | switch ($this->request->getMethod()) { |
|---|
| | 93 | case 'get': |
|---|
| | 94 | $this->doGET(); |
|---|
| | 95 | break; |
|---|
| | 96 | case 'post': |
|---|
| | 97 | $this->doPOST(); |
|---|
| | 98 | break; |
|---|
| | 99 | } |
|---|
| | 100 | } |
|---|
| | 101 | |
|---|
| | 102 | /** |
|---|
| | 103 | * Handle a JSON-RPC POST request |
|---|
| | 104 | * |
|---|
| | 105 | * @todo Add error handling |
|---|
| | 106 | */ |
|---|
| | 107 | public function doPOST() { |
|---|
| | 108 | $jsonPattern = new stubRegexValidator(self::JSON_PATTERN); |
|---|
| | 109 | $requestJsonObj = $this->request->getValidatedRawData($jsonPattern); |
|---|
| | 110 | $phpJsonObj = json_decode($requestJsonObj); |
|---|
| | 111 | |
|---|
| | 112 | try { |
|---|
| | 113 | $this->checkRequestId($phpJsonObj->id); |
|---|
| | 114 | $result = $this->invokeServiceMethod($phpJsonObj->method, $phpJsonObj->params); |
|---|
| | 115 | $this->sendResponse($phpJsonObj->id, $result); |
|---|
| | 116 | } catch (Exception $e) { |
|---|
| | 117 | $this->sendFault($phpJsonObj->id, $e->getMessage()); |
|---|
| | 118 | } |
|---|
| | 119 | } |
|---|
| | 120 | |
|---|
| | 121 | /** |
|---|
| | 122 | * Invoke the requested methods |
|---|
| | 123 | * |
|---|
| | 124 | * @param string $methodName |
|---|
| | 125 | * @param array $params |
|---|
| | 126 | * @return mixed |
|---|
| | 127 | */ |
|---|
| | 128 | protected function invokeServiceMethod($methodName, $params) { |
|---|
| | 129 | if (!preg_match('/'.self::CLASS_AND_METHOD_PATTERN.'/', $methodName)) { |
|---|
| | 130 | throw new stubException('method-Pattern has to be <className>.<methodName>'); |
|---|
| | 131 | } |
|---|
| | 132 | list($className, $methodName) = explode('.', $methodName); |
|---|
| | 133 | $clazz = $this->getReflectionClass($className); |
|---|
| | 134 | if ($clazz == null) { |
|---|
| | 135 | throw new stubException('Unknown class ' . $className . '.'); |
|---|
| | 136 | } |
|---|
| | 137 | |
|---|
| | 138 | $method = $clazz->getMethod($methodName); |
|---|
| | 139 | if ($method->getNumberOfRequiredParameters() > count($params)) { |
|---|
| | 140 | throw new stubException('Invalid amount of parameters passed.'); |
|---|
| | 141 | } |
|---|
| | 142 | |
|---|
| | 143 | $instance = $clazz->newInstance(); |
|---|
| | 144 | return $method->invokeArgs($instance, $params); |
|---|
| | 145 | } |
|---|
| | 146 | |
|---|
| | 147 | /** |
|---|
| | 148 | * Handle a JSON-RPC GET request |
|---|
| | 149 | * |
|---|
| | 150 | * http://localhost/stubbles/docroot/json.php? |
|---|
| | 151 | * <paramName>=2 |
|---|
| | 152 | * [&<paramName>=3]* |
|---|
| | 153 | * &method=<classname>.<methodname> |
|---|
| | 154 | * &id=186252 |
|---|
| | 155 | * |
|---|
| | 156 | * @todo Test, whether this still works |
|---|
| | 157 | */ |
|---|
| | 158 | public function doGET() { |
|---|
| | 159 | try { |
|---|
| | 160 | $classAndMethodPattern = new stubRegexValidator(self::CLASS_AND_METHOD_PATTERN); |
|---|
| | 161 | $classAndMethod = $this->request->getValidatedValue($classAndMethodPattern, 'method'); |
|---|
| | 162 | $idPattern = new stubRegexValidator(self::ID_PATTERN); |
|---|
| | 163 | $requestId = $this->request->getValidatedValue($idPattern, 'id'); |
|---|
| | 164 | |
|---|
| | 165 | $params = $this->retrieveGETParams($classAndMethod); |
|---|
| | 166 | |
|---|
| | 167 | $this->checkRequestId($phpJsonObj->id); |
|---|
| | 168 | $result = $this->invokeServiceMethod($classAndMethod, $params); |
|---|
| | 169 | $this->sendResponse($phpJsonObj->id, $result); |
|---|
| | 170 | } catch (Exception $e) { |
|---|
| | 171 | $this->sendFault($phpJsonObj->id, $e->getMessage()); |
|---|
| | 172 | } |
|---|
| | 173 | } |
|---|
| | 174 | |
|---|
| | 175 | /** |
|---|
| | 176 | * Create the class object from the client class name |
|---|
| | 177 | * |
|---|
| | 178 | * @param string $class |
|---|
| | 179 | * @return stubReflectionClass |
|---|
| | 180 | */ |
|---|
| | 181 | protected function getReflectionClass($class) { |
|---|
| | 182 | if (!isset($this->classMap[$class])) { |
|---|
| | 183 | throw new Exception('Unknown class ' . $class . '.'); |
|---|
| | 184 | } |
|---|
| | 185 | $fqClass = $this->classMap[$class]; |
|---|
| | 186 | $classObj = new stubReflectionClass($fqClass); |
|---|
| | 187 | return $classObj; |
|---|
| | 188 | } |
|---|
| | 189 | |
|---|
| | 190 | /** |
|---|
| | 191 | * Get the parameters from the GET request |
|---|
| | 192 | * |
|---|
| | 193 | * @param string $methodName |
|---|
| | 194 | * @return array |
|---|
| | 195 | */ |
|---|
| | 196 | protected function retrieveGETParams($methodName) { |
|---|
| 158 | | $paramValues = $this->retrieveGETParams(); |
|---|
| 159 | | |
|---|
| 160 | | $result = $this->invokeWebServiceMethod($paramValues); |
|---|
| 161 | | } |
|---|
| 162 | | } else { |
|---|
| 163 | | $this->setError('method value has to be [className].[methodName]'); |
|---|
| 164 | | } |
|---|
| 165 | | |
|---|
| 166 | | $idPattern = new stubRegexValidator(self::ID_PATTERN); |
|---|
| 167 | | $requestId = $this->request->getValidatedValue($idPattern, 'id'); |
|---|
| 168 | | $this->checkRequestId($requestId); |
|---|
| 169 | | |
|---|
| 170 | | $this->fillResponse($requestId, $result); |
|---|
| 171 | | } |
|---|
| 172 | | |
|---|
| 173 | | /** |
|---|
| 174 | | * doPOST() for live usage |
|---|
| 175 | | * |
|---|
| 176 | | * http://localhost/stubbles/docroot/json.php |
|---|
| 177 | | * ReqObj = {"method":"<className>.<methodName>","params":[3],"id":"186252"} |
|---|
| 178 | | * |
|---|
| 179 | | */ |
|---|
| 180 | | public function doPOST() { |
|---|
| 181 | | $jsonPattern = new stubRegexValidator(self::JSON_PATTERN); |
|---|
| 182 | | $requestJsonObj = $this->request->getValidatedRawData($jsonPattern); |
|---|
| 183 | | $phpJsonObj = json_decode($requestJsonObj); |
|---|
| 184 | | $classAndMethod = $phpJsonObj->method; |
|---|
| 185 | | |
|---|
| 186 | | if(isset($classAndMethod) && preg_match('/'.self::CLASS_AND_METHOD_PATTERN.'/', $classAndMethod)) { |
|---|
| 187 | | list($className, $methodName) = explode('.', $classAndMethod); |
|---|
| 188 | | |
|---|
| 189 | | if ($this->isRegisteredClass($className) && $this->hasWebServiceMethod($methodName)) { |
|---|
| 190 | | $result = $this->invokeWebServiceMethod($phpJsonObj->params); |
|---|
| 191 | | } |
|---|
| 192 | | |
|---|
| 193 | | } else { |
|---|
| 194 | | $this->setError('method-Pattern has to be <className>.<methodName>'); |
|---|
| 195 | | } |
|---|
| 196 | | |
|---|
| 197 | | $this->checkRequestId($phpJsonObj->id); |
|---|
| 198 | | $this->fillResponse($phpJsonObj->id, $result); |
|---|
| 199 | | } |
|---|
| 200 | | |
|---|
| 201 | | public function doProcess() { |
|---|
| 202 | | switch ($this->request->getMethod()) { |
|---|
| 203 | | case 'get': |
|---|
| 204 | | $this->doGET(); |
|---|
| 205 | | break; |
|---|
| 206 | | case 'post': |
|---|
| 207 | | $this->doPOST(); |
|---|
| 208 | | break; |
|---|
| 209 | | } |
|---|
| 210 | | |
|---|
| 211 | | $this->response->write($this->getJsonResponseObject()); |
|---|
| 212 | | } |
|---|
| | 198 | |
|---|
| | 199 | list($className, $methodName) = explode('.', $methodName); |
|---|
| | 200 | $clazz = $this->getReflectionClass($className); |
|---|
| | 201 | if ($clazz == null) { |
|---|
| | 202 | throw new stubException('Unknown class ' . $className . '.'); |
|---|
| | 203 | } |
|---|
| | 204 | |
|---|
| | 205 | $method = $clazz->getMethod($methodName); |
|---|
| | 206 | |
|---|
| | 207 | $paramPattern = new stubRegexValidator(self::PARAM_PATTERN); |
|---|
| | 208 | foreach ($method->getParameters() as $param) { |
|---|
| | 209 | $paramName = $param->getName(); |
|---|
| | 210 | $currentRequest = $this->request->getValidatedValue($paramPattern, $paramName); |
|---|
| | 211 | if (!isset($currentRequest)) { |
|---|
| | 212 | throw new stubException('Param '. $paramName . ' is missing.'); |
|---|
| | 213 | } |
|---|
| | 214 | array_push($paramValues, $currentRequest); |
|---|
| | 215 | } |
|---|
| | 216 | return $paramValues; |
|---|
| | 217 | } |
|---|
| | 218 | |
|---|
| | 219 | protected function checkRequestId($id) { |
|---|
| | 220 | if (!isset($id)) { |
|---|
| | 221 | $this->setError('id has to have 6-7 digits'); |
|---|
| | 222 | } |
|---|
| | 223 | } |
|---|
| | 224 | |
|---|
| | 225 | /** |
|---|
| | 226 | * Send a json fault |
|---|
| | 227 | * |
|---|
| | 228 | */ |
|---|
| | 229 | protected function sendFault($reqId, $message) { |
|---|
| | 230 | $fault = array( |
|---|
| | 231 | 'id' => $reqId, |
|---|
| | 232 | 'error' => utf8_encode($message) |
|---|
| | 233 | ); |
|---|
| | 234 | $faultEncoded = json_encode($fault); |
|---|
| | 235 | $this->response->write($faultEncoded); |
|---|
| | 236 | } |
|---|
| | 237 | |
|---|
| | 238 | /** |
|---|
| | 239 | * Send a json response |
|---|
| | 240 | * |
|---|
| | 241 | */ |
|---|
| | 242 | protected function sendResponse($reqId, $result) { |
|---|
| | 243 | $response = array( |
|---|
| | 244 | 'id' => $reqId, |
|---|
| | 245 | 'result' => $this->recursiveUtf8Encode($result) |
|---|
| | 246 | ); |
|---|
| | 247 | $responseEncoded = json_encode($response); |
|---|
| | 248 | $this->response->write($responseEncoded); |
|---|
| | 249 | } |
|---|
| | 250 | |
|---|
| | 251 | /** |
|---|
| | 252 | * Encode the response in UTF-8 |
|---|
| | 253 | * |
|---|
| | 254 | * @param mixed $value |
|---|
| | 255 | * @return mixed |
|---|
| | 256 | * @todo add support for objects |
|---|
| | 257 | */ |
|---|
| | 258 | protected function recursiveUtf8Encode($value) { |
|---|
| | 259 | if (is_string($value)) { |
|---|
| | 260 | return utf8_encode($value); |
|---|
| | 261 | } |
|---|
| | 262 | if (is_array($value)) { |
|---|
| | 263 | foreach ($value as $key => $val) { |
|---|
| | 264 | $value[$key] = $this->recursiveUtf8Encode($val); |
|---|
| | 265 | } |
|---|
| | 266 | } |
|---|
| | 267 | return $value; |
|---|
| | 268 | } |
|---|