221 lines
7.9 KiB
PHP
221 lines
7.9 KiB
PHP
<?php
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/**
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* library.php
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*
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* Written using the JSON RPC specification -
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* http://json-rpc.org/wiki/specification
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*
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* @author Kacper Rowinski <krowinski@implix.com>
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* http://implix.com
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* Modified to work with monero-rpc wallet by Serhack and cryptochangements
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*/
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class jsonRPCClient
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{
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protected $url = null, $is_debug = false, $parameters_structure = 'array';
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protected $curl_options = array(
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CURLOPT_CONNECTTIMEOUT => 8,
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CURLOPT_TIMEOUT => 8
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);
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private $httpErrors = array(
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400 => '400 Bad Request',
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401 => '401 Unauthorized',
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403 => '403 Forbidden',
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404 => '404 Not Found',
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405 => '405 Method Not Allowed',
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406 => '406 Not Acceptable',
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408 => '408 Request Timeout',
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500 => '500 Internal Server Error',
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502 => '502 Bad Gateway',
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503 => '503 Service Unavailable'
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);
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public function __construct($pUrl)
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{
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$this->validate(false === extension_loaded('curl'), 'The curl extension must be loaded for using this class!');
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$this->validate(false === extension_loaded('json'), 'The json extension must be loaded for using this class!');
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$this->url = $pUrl;
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}
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private function getHttpErrorMessage($pErrorNumber)
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{
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return isset($this->httpErrors[$pErrorNumber]) ? $this->httpErrors[$pErrorNumber] : null;
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}
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public function setDebug($pIsDebug)
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{
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$this->is_debug = !empty($pIsDebug);
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return $this;
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}
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/* public function setParametersStructure($pParametersStructure)
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{
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if (in_array($pParametersStructure, array('array', 'object')))
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{
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$this->parameters_structure = $pParametersStructure;
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}
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else
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{
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throw new UnexpectedValueException('Invalid parameters structure type.');
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}
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return $this;
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} */
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public function setCurlOptions($pOptionsArray)
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{
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if (is_array($pOptionsArray))
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{
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$this->curl_options = $pOptionsArray + $this->curl_options;
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}
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else
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{
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throw new InvalidArgumentException('Invalid options type.');
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}
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return $this;
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}
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public function _run($pMethod, $pParams)
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{
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static $requestId = 0;
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// generating uniuqe id per process
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$requestId++;
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// check if given params are correct
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$this->validate(false === is_scalar($pMethod), 'Method name has no scalar value');
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// $this->validate(false === is_array($pParams), 'Params must be given as array');
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// send params as an object or an array
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//$pParams = ($this->parameters_structure == 'object') ? $pParams[0] : array_values($pParams);
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// Request (method invocation)
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$request = json_encode(array('jsonrpc' => '2.0', 'method' => $pMethod, 'params' => $pParams, 'id' => $requestId));
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// if is_debug mode is true then add url and request to is_debug
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$this->debug('Url: ' . $this->url . "\r\n", false);
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$this->debug('Request: ' . $request . "\r\n", false);
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$responseMessage = $this->getResponse($request);
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// if is_debug mode is true then add response to is_debug and display it
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$this->debug('Response: ' . $responseMessage . "\r\n", true);
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// decode and create array ( can be object, just set to false )
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$responseDecoded = json_decode($responseMessage, true);
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// check if decoding json generated any errors
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$jsonErrorMsg = $this->getJsonLastErrorMsg();
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$this->validate( !is_null($jsonErrorMsg), $jsonErrorMsg . ': ' . $responseMessage);
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// check if response is correct
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$this->validate(empty($responseDecoded['id']), 'Invalid response data structure: ' . $responseMessage);
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$this->validate($responseDecoded['id'] != $requestId, 'Request id: ' . $requestId . ' is different from Response id: ' . $responseDecoded['id']);
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if (isset($responseDecoded['error']))
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{
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$errorMessage = 'Request have return error: ' . $responseDecoded['error']['message'] . '; ' . "\n" .
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'Request: ' . $request . '; ';
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if (isset($responseDecoded['error']['data']))
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{
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$errorMessage .= "\n" . 'Error data: ' . $responseDecoded['error']['data'];
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}
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$this->validate( !is_null($responseDecoded['error']), $errorMessage);
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}
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return $responseDecoded['result'];
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}
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protected function & getResponse(&$pRequest)
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{
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// do the actual connection
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$ch = curl_init();
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if ( !$ch)
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{
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throw new RuntimeException('Could\'t initialize a cURL session');
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}
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curl_setopt($ch, CURLOPT_URL, $this->url);
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curl_setopt($ch, CURLOPT_POST, 1);
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curl_setopt($ch, CURLOPT_POSTFIELDS, $pRequest);
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curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-type: application/json'));
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curl_setopt($ch, CURLOPT_ENCODING, 'gzip,deflate');
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curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
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curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
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if ( !curl_setopt_array($ch, $this->curl_options))
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{
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throw new RuntimeException('Error while setting curl options');
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}
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// send the request
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$response = curl_exec($ch);
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// check http status code
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$httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
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if (isset($this->httpErrors[$httpCode]))
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{
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throw new RuntimeException('Response Http Error - ' . $this->httpErrors[$httpCode]);
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}
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// check for curl error
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if (0 < curl_errno($ch))
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{
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throw new RuntimeException('Unable to connect to '.$this->url . ' Error: ' . curl_error($ch));
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}
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// close the connection
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curl_close($ch);
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return $response;
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}
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public function validate($pFailed, $pErrMsg)
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{
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if ($pFailed)
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{
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throw new RuntimeException($pErrMsg);
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}
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}
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protected function debug($pAdd, $pShow = false)
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{
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static $debug, $startTime;
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// is_debug off return
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if (false === $this->is_debug)
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{
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return;
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}
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// add
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$debug .= $pAdd;
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// get starttime
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$startTime = empty($startTime) ? array_sum(explode(' ', microtime())) : $startTime;
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if (true === $pShow and !empty($debug))
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{
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// get endtime
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$endTime = array_sum(explode(' ', microtime()));
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// performance summary
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$debug .= 'Request time: ' . round($endTime - $startTime, 3) . ' s Memory usage: ' . round(memory_get_usage() / 1024) . " kb\r\n";
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echo nl2br($debug);
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// send output imidiately
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flush();
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// clean static
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$debug = $startTime = null;
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}
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}
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function getJsonLastErrorMsg()
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{
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if (!function_exists('json_last_error_msg'))
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{
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function json_last_error_msg()
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{
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static $errors = array(
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JSON_ERROR_NONE => 'No error',
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JSON_ERROR_DEPTH => 'Maximum stack depth exceeded',
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JSON_ERROR_STATE_MISMATCH => 'Underflow or the modes mismatch',
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JSON_ERROR_CTRL_CHAR => 'Unexpected control character found',
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JSON_ERROR_SYNTAX => 'Syntax error',
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JSON_ERROR_UTF8 => 'Malformed UTF-8 characters, possibly incorrectly encoded'
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);
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$error = json_last_error();
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return array_key_exists($error, $errors) ? $errors[$error] : 'Unknown error (' . $error . ')';
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}
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}
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// Fix PHP 5.2 error caused by missing json_last_error function
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if (function_exists('json_last_error'))
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{
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return json_last_error() ? json_last_error_msg() : null;
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}
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else
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{
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return null;
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}
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}
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}
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