/**
 * The object of this class are generic jsonRPC 1.0 clients
 * http://json-rpc.org/wiki/specification
 *
 * @author sergio <jsonrpcphp@inservibile.org>
 */
class jsonRPCClient {
	
	/**
	 * Debug state
	 *
	 * @var boolean
	 */
	private $debug;
	
	/**
	 * The server URL
	 *
	 * @var string
	 */
	private $url;
	/**
	 * The request id
	 *
	 * @var integer
	 */
	private $id;
	/**
	 * If true, notifications are performed instead of requests
	 *
	 * @var boolean
	 */
	private $notification = false;
	
	/**
	 * Takes the connection parameters
	 *
	 * @param string $url
	 * @param boolean $debug
	 */
	public function __construct($url,$user_pwd,$debug = false) {
		// server URL
		$this->url = $url;
		// user:password
		$this->user_pwd = $user_pwd;
		// proxy
		empty($proxy) ? $this->proxy = '' : $this->proxy = $proxy;
		// debug state
		empty($debug) ? $this->debug = false : $this->debug = true;
		// message id
		$this->id = 1;
	}
	
	/**
	 * Sets the notification state of the object. In this state, notifications are performed, instead of requests.
	 *
	 * @param boolean $notification
	 */
	public function setRPCNotification($notification) {
		empty($notification) ?
							$this->notification = false
							:
							$this->notification = true;
	}
	
	/**
	 * Performs a jsonRCP request and gets the results as an array
	 *
	 * @param string $method
	 * @param array $params
	 * @return array
	 */
	public function __call($method,$params) {
		
		// check
		if (!is_scalar($method)) {
			throw new Exception('Method name has no scalar value');
		}
		
		// check
		if (is_array($params)) {
			// no keys
			$params = array_values($params);
		} else {
			throw new Exception('Params must be given as array');
		}
		
		// sets notification or request task
		if ($this->notification) {
			$currentId = NULL;
		} else {
			$currentId = $this->id;
		}
		
		// prepares the request
		$request = array(
						'method' => $method,
						'params' => $params,
						'id' => $currentId
						);
		$request = json_encode($request);
		$this->debug && $this->debug.='***** Request *****'."\n".$request."\n".'***** End Of request *****'."\n\n";
		
		// performs the HTTP POST
        $ch = curl_init();
        curl_setopt_array($ch, array(
            CURLOPT_URL => $this->url,
            CURLOPT_USERPWD => $this->user_pwd,
            CURLOPT_POST => true,
            CURLOPT_POSTFIELDS => $request,
            CURLOPT_HTTPHEADER => array('Content-type: application/json'),
            CURLOPT_RETURNTRANSFER => true,
        ));
        
        $response = curl_exec($ch);
        $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
        if($http_code < 200 || $http_code >= 300)
        {
			throw new Exception('Unable to connect to '.$this->url);
		}
        
        $this->debug && $this->debug.='***** Server response *****'."\n".$response.'***** End of server response *****'."\n";
        $response = json_decode($response,true);
		
		// debug output
		if ($this->debug) {
			echo nl2br($debug);
		}
		
		// final checks and return
		if (!$this->notification) {
			// check
			if ($response['id'] != $currentId) {
//				throw new Exception('Incorrect response id (request id: '.$currentId.', response id: '.print_r($response,true).')');
			}
			if (!is_null($response['error'])) {
//				throw new Exception('Request error: '.$response['error']['message']);
			}
			
			return $response['result'];
			
		} else {
			return true;
		}
	}
}
?>

/* Configuration variables for the JSON-RPC server */
$rpc_host = 'localhost';
$rpc_port = '8332';
$rpc_user = 'thisuser';
$rpc_pass = 'mypass';


require_once('jsonRPCClient.php');
$bc = new jsonRPCClient('http://' . $rpc_user . ':' . $rpc_pass . '@' . $rpc_host . ':' . $rpc_port);

# JSON-RPC options (for controlling a running Bitcoin/bitcoind process)
 
 # server=1 tells Bitcoin-QT to accept JSON-RPC commands.
 server=1
 
 # You must set rpcuser and rpcpassword to secure the JSON-RPC api
 rpcuser=thisuser
 rpcpassword=thispass
 
 # How many seconds bitcoin will wait for a complete RPC HTTP request.
 # after the HTTP connection is established. 
 rpctimeout=30
 
 # By default, only RPC connections from localhost are allowed.  Specify
 # as many rpcallowip= settings as you like to allow connections from
 # other hosts (and you may use * as a wildcard character):
 #rpcallowip=10.1.1.34
 rpcallowip=127.0.0.1
 rpcallowip=10.1.10.100
 rpcallowip=localhost
 
 # Listen for RPC connections on this TCP port:
 rpcport=8332