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<?php
/**
* @package modx
* @subpackage rest
*/
require_once dirname(__FILE__) . '/modrestclient.class.php';
/**
* Handles REST requests through a cURL-based client
* @package modx
* @subpackage rest
*/
class modRestCurlClient extends modRestClient {
/**
* @param modX $modx A reference to the modX object
* @param array $config An array of configuration options
*/
function __construct(modX &$modx,array $config = array()) {
parent::__construct($modx, $config);
$this->config = array_merge(array(
),$this->config);
}
/**
* Extends modRestClient::request to provide cURL specific request handling
*
* @param string $host The host of the REST server.
* @param string $path The path to request to on the REST server.
* @param string $method The HTTP method to use for the request. May be GET,
* PUT or POST.
* @param array $params An array of parameters to send with the request.
* @param array $options An array of options to pass to the request.
* @return modRestResponse The response object.
*/
public function request($host,$path,$method = 'GET',array $params = array(),array $options = array()) {
/* start our cURL connection */
$ch = curl_init();
/* setup request */
$this->setUrl($ch,$host,$path,$method,$params,$options);
$this->setAuth($ch,$options);
$this->setProxy($ch,$options);
$this->setOptions($ch,$options);
/* execute request */
$result = trim(curl_exec($ch));
/* make sure to close connection */
curl_close($ch);
return $result;
}
/**
* Configure and set the URL to use, along with any request parameters.
*
* @param resource $ch The cURL connection resource
* @param string $host The host to send the request to
* @param string $path The path of the request
* @param string $method The method of the request (GET/POST)
* @param array $params An array of request parameters to attach to the URL
* @param array $options An array of options when setting the URL
* @return boolean Whether or not the URL was set
* @see modRestClient::request for parameter documentation.
*/
public function setUrl($ch,$host,$path,$method = 'GET',array $params = array(),array $options = array()) {
$q = http_build_query($params);
switch ($method) {
case 'GET':
$path .= (strpos($host,'?') === false ? '?' : '&').$q;
break;
case 'POST':
curl_setopt($ch,CURLOPT_POST,1);
$contentType = $this->modx->getOption('contentType',$options,'xml');
switch ($contentType) {
case 'json':
$json = $this->modx->toJSON($params);
curl_setopt($ch,CURLOPT_HTTPHEADER, array('Content-Type: application/json'));
curl_setopt($ch,CURLOPT_POSTFIELDS,$json);
break;
case 'xml':
curl_setopt($ch,CURLOPT_HTTPHEADER, array('Content-Type: application/xml'));
$xml = modRestArrayToXML::toXML($params,!empty($options['rootNode']) ? $options['rootNode'] : 'request');
curl_setopt($ch,CURLOPT_POSTFIELDS,$xml);
break;
default:
curl_setopt($ch,CURLOPT_POSTFIELDS,$params);
break;
}
break;
}
/* prevent invalid xhtml ampersands in request path */
$url = str_replace('&', '&', $host.$path);
return curl_setopt($ch, CURLOPT_URL,$url);
}
/**
* Set up cURL-specific options
*
* @param resource $ch The cURL connection resource
* @param array $options An array of options
*/
public function setOptions($ch,array $options = array()) {
/* always return us the result */
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
/* we dont want header gruft */
curl_setopt($ch, CURLOPT_HEADER, 0);
/* default timeout to 30 seconds */
curl_setopt($ch, CURLOPT_TIMEOUT,$this->config[modRestClient::OPT_TIMEOUT]);
/* disable verifypeer since it's not helpful on most environments */
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
/* send a useragent to allow proper responses */
curl_setopt($ch, CURLOPT_USERAGENT,$this->config[modRestCurlClient::OPT_USERAGENT]);
/* can only use follow location if safe_mode and open_basedir are off */
$safeMode = ini_get('safe_mode');
$openBasedir = ini_get('open_basedir');
if (empty($safeMode) && empty($openBasedir)) {
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
}
}
/**
* Set up authentication configuration , if specified, to be used with REST request.
*
* @param resource $ch The cURL connection resource.
* @param array $options An array of options
* @return boolean True if authentication was used.
*/
public function setAuth($ch,array $options = array()) {
$auth = false;
if (!empty($options[modRestClient::OPT_USERPWD])) {
$options[modRestClient::OPT_AUTHTYPE] = $this->modx->getOption(modRestClient::OPT_AUTHTYPE,$options,'BASIC');
switch ($options[modRestClient::OPT_AUTHTYPE]) {
case 'ANY': curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_ANY); break;
case 'ANYSAFE': curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_ANYSAFE); break;
case 'DIGEST': curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_DIGEST); break;
case 'GSSNEGOTIATE': curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_GSSNEGOTIATE); break;
case 'NTLM': curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_NTLM); break;
default: case 'BASIC': curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_BASIC); break;
}
$auth = curl_setopt($ch, CURLOPT_USERPWD, !empty($options[modRestClient::OPT_USERPWD]) ? $options[modRestClient::OPT_USERPWD] : 'username:password');
}
return $auth;
}
/**
* Set up proxy configuration , if specified, to be used with REST request.
*
* @param resource $ch The cURL connection resource.
* @param array $options An array of options
* @return boolean True if the proxy was setup.
*/
public function setProxy($ch,array $options = array()) {
$proxyEnabled = false;
/* if proxy is set, attempt to use it */
$proxyHost = $this->modx->getOption('proxy_host',null,'');
if (!empty($proxyHost)) {
$proxyEnabled = curl_setopt($ch, CURLOPT_PROXY,$proxyHost);
$proxyPort = $this->modx->getOption('proxy_port',null,'');
if (!empty($proxyPort)) {
curl_setopt($ch, CURLOPT_PROXYPORT,$proxyPort);
}
$proxyUserpwd = $this->modx->getOption('proxy_username',null,'');
if (!empty($proxyUserpwd)) {
$proxyAuthType = $this->modx->getOption('proxy_auth_type',null,'BASIC');
$proxyAuthType = $proxyAuthType == 'NTLM' ? CURLAUTH_NTLM : CURLAUTH_BASIC;
curl_setopt($ch, CURLOPT_PROXYAUTH,$proxyAuthType);
$proxyPassword = $this->modx->getOption('proxy_password',null,'');
if (!empty($proxyPassword)) $proxyUserpwd .= ':'.$proxyPassword;
curl_setopt($ch, CURLOPT_PROXYUSERPWD,$proxyUserpwd);
}
}
return $proxyEnabled;
}
}
if (!class_exists('modRestArrayToXML')) {
/**
* Utility class for array-to-XML transformations.
*
* @package modx
* @subpackage rest
*/
class modRestArrayToXML {
/**
* The main function for converting to an XML document.
* Pass in a multi dimensional array and this recrusively loops through and builds up an XML document.
*
* @param array $data
* @param string $rootNodeName - what you want the root node to be - defaultsto data.
* @param SimpleXMLElement $xml - should only be used recursively
* @return string XML
*/
public static function toXML( $data, $rootNodeName = 'ResultSet', &$xml=null ) {
// turn off compatibility mode as simple xml throws a wobbly if you don't.
if ( ini_get('zend.ze1_compatibility_mode') == 1 ) ini_set ( 'zend.ze1_compatibility_mode', 0 );
if ( is_null( $xml ) ) $xml = simplexml_load_string('<?xml version="1.0" encoding="UTF-8" standalone="yes"?><'.$rootNodeName.'></'.$rootNodeName.'>');
// loop through the data passed in.
foreach( $data as $key => $value ) {
// no numeric keys in our xml please!
if ( is_numeric( $key ) ) {
$numeric = 1;
$key = $rootNodeName;
}
// delete any char not allowed in XML element names
$key = preg_replace('/[^a-z0-9\-\_\.\:]/i', '', $key);
// if there is another array found recrusively call this function
if ( is_array( $value ) ) {
$node = modRestArrayToXML::isAssoc( $value ) || $numeric ? $xml->addChild( $key ) : $xml;
// recrusive call.
if ( $numeric ) $key = 'anon';
modRestArrayToXML::toXml( $value, $key, $node );
} else {
// add single node.
$value = htmlentities( $value );
$xml->addChild( $key, $value );
}
}
// pass back as XML
//return $xml->asXML();
// if you want the XML to be formatted, use the below instead to return the XML
$doc = new DOMDocument('1.0');
$doc->preserveWhiteSpace = false;
$doc->loadXML( $xml->asXML() );
$doc->formatOutput = true;
return $doc->saveXML();
}
/**
* Convert an XML document to a multi dimensional array
* Pass in an XML document (or SimpleXMLElement object) and this recrusively loops through and builds a representative array
*
* @param string $xml - XML document - can optionally be a SimpleXMLElement object
* @return array ARRAY
*/
public static function toArray( $xml ) {
if ( is_string( $xml ) ) $xml = new SimpleXMLElement( $xml );
$children = $xml->children();
if ( !$children ) return (string) $xml;
$arr = array();
foreach ( $children as $key => $node ) {
$node = modRestArrayToXML::toArray( $node );
// support for 'anon' non-associative arrays
if ( $key == 'anon' ) $key = count( $arr );
// if the node is already set, put it into an array
if ( isset( $arr[$key] ) ) {
if ( !is_array( $arr[$key] ) || $arr[$key][0] == null ) $arr[$key] = array( $arr[$key] );
$arr[$key][] = $node;
} else {
$arr[$key] = $node;
}
}
return $arr;
}
/**
* Determine if a variable is an associative array
*
* @static
* @param mixed $array The variable to check
* @return boolean True if is an array
*/
public static function isAssoc( $array ) {
return (is_array($array) && 0 !== count(array_diff_key($array, array_keys(array_keys($array)))));
}
}
}