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KalturaClientBase.php
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<?php
// ===================================================================================================
// _ __ _ _
// | |/ /__ _| | |_ _ _ _ _ __ _
// | ' </ _` | | _| || | '_/ _` |
// |_|\_\__,_|_|\__|\_,_|_| \__,_|
//
// This file is part of the Kaltura Collaborative Media Suite which allows users
// to do with audio, video, and animation what Wiki platfroms allow them to do with
// text.
//
// Copyright (C) 2006-2011 Kaltura Inc.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
// @ignore
// ===================================================================================================
/**
* @package Kaltura
* @subpackage Client
*/
class MultiRequestSubResult implements ArrayAccess
{
function __construct($value)
{
$this->value = $value;
}
function __toString()
{
return '{' . $this->value . '}';
}
function __get($name)
{
return new MultiRequestSubResult($this->value . ':' . $name);
}
public function offsetExists($offset)
{
return true;
}
public function offsetGet($offset)
{
return new MultiRequestSubResult($this->value . ':' . $offset);
}
public function offsetSet($offset, $value)
{
}
public function offsetUnset($offset)
{
}
}
/**
* @package Kaltura
* @subpackage Client
*/
class KalturaNull
{
private static $instance;
private function __construct()
{
}
public static function getInstance()
{
if (!isset(self::$instance)) {
$c = __CLASS__;
self::$instance = new $c();
}
return self::$instance;
}
function __toString()
{
return '';
}
}
/**
* @package Kaltura
* @subpackage Client
*/
class KalturaClientBase
{
const KALTURA_SERVICE_FORMAT_JSON = 1;
const KALTURA_SERVICE_FORMAT_XML = 2;
const KALTURA_SERVICE_FORMAT_PHP = 3;
// KS V2 constants
const RANDOM_SIZE = 16;
const FIELD_EXPIRY = '_e';
const FIELD_TYPE = '_t';
const FIELD_USER = '_u';
const METHOD_POST = 'POST';
const METHOD_GET = 'GET';
/**
* @var KalturaConfiguration
*/
protected $config;
/**
* @var array
*/
protected $clientConfiguration = array();
/**
* @var array
*/
protected $requestConfiguration = array();
/**
* @var boolean
*/
private $shouldLog = false;
/**
* @var bool
*/
private $isMultiRequest = false;
/**
* @var unknown_type
*/
private $callsQueue = array();
/**
* Array of all plugin services
*
* @var array<KalturaServiceBase>
*/
protected $pluginServices = array();
/**
* @var Array of response headers
*/
private $responseHeaders = array();
/**
* path to save served results
* @var string
*/
protected $destinationPath = null;
/**
* return served results without unserializing them
* @var boolean
*/
protected $returnServedResult = null;
public function __get($serviceName)
{
if(isset($this->pluginServices[$serviceName]))
return $this->pluginServices[$serviceName];
return null;
}
/**
* Kaltura client constructor
*
* @param KalturaConfiguration $config
*/
public function __construct(KalturaConfiguration $config)
{
$this->config = $config;
$logger = $this->config->getLogger();
if ($logger)
{
$this->shouldLog = true;
}
// load all plugins
$pluginsFolder = realpath(dirname(__FILE__)) . '/KalturaPlugins';
if(is_dir($pluginsFolder))
{
$dir = dir($pluginsFolder);
while (false !== $fileName = $dir->read())
{
$matches = null;
if(preg_match('/^([^.]+).php$/', $fileName, $matches))
{
require_once("$pluginsFolder/$fileName");
$pluginClass = $matches[1];
if(!class_exists($pluginClass) || !in_array('IKalturaClientPlugin', class_implements($pluginClass)))
continue;
$plugin = call_user_func(array($pluginClass, 'get'), $this);
if(!($plugin instanceof IKalturaClientPlugin))
continue;
$pluginName = $plugin->getName();
$services = $plugin->getServices();
foreach($services as $serviceName => $service)
{
$service->setClient($this);
$this->pluginServices[$serviceName] = $service;
}
}
}
}
}
/* Store response headers into array */
public function readHeader($ch, $string)
{
array_push($this->responseHeaders, $string);
return strlen($string);
}
/* Retrive response headers */
public function getResponseHeaders()
{
return $this->responseHeaders;
}
public function getServeUrl()
{
if (count($this->callsQueue) != 1)
return null;
$params = array();
$files = array();
$this->log("service url: [" . $this->config->serviceUrl . "]");
// append the basic params
$this->addParam($params, "format", $this->config->format);
foreach($this->clientConfiguration as $param => $value)
{
$this->addParam($params, $param, $value);
}
$call = $this->callsQueue[0];
$this->resetRequest();
$params = array_merge($params, $call->params);
$signature = $this->signature($params);
$this->addParam($params, "kalsig", $signature);
$url = $this->config->serviceUrl . "/api_v3/index.php?service={$call->service}&action={$call->action}";
$url .= '&' . http_build_query($params);
$this->log("Returned url [$url]");
return $url;
}
public function queueServiceActionCall($service, $action, $params = array(), $files = array())
{
foreach($this->requestConfiguration as $param => $value)
{
$this->addParam($params, $param, $value);
}
$call = new KalturaServiceActionCall($service, $action, $params, $files);
$this->callsQueue[] = $call;
}
protected function resetRequest()
{
$this->destinationPath = null;
$this->returnServedResult = false;
$this->isMultiRequest = false;
$this->callsQueue = array();
}
/**
* Call all API service that are in queue
*
* @return unknown
*/
public function doQueue()
{
if($this->isMultiRequest && ($this->destinationPath || $this->returnServedResult))
{
$this->resetRequest();
throw new KalturaClientException("Downloading files is not supported as part of multi-request.", KalturaClientException::ERROR_DOWNLOAD_IN_MULTIREQUEST);
}
if (count($this->callsQueue) == 0)
{
$this->resetRequest();
return null;
}
$startTime = microtime(true);
$params = array();
$files = array();
$this->log("service url: [" . $this->config->serviceUrl . "]");
// append the basic params
$this->addParam($params, "format", $this->config->format);
$this->addParam($params, "ignoreNull", true);
foreach($this->clientConfiguration as $param => $value)
{
$this->addParam($params, $param, $value);
}
$url = $this->config->serviceUrl."/api_v3/index.php?service=";
if ($this->isMultiRequest)
{
$url .= "multirequest";
$i = 1;
foreach ($this->callsQueue as $call)
{
$callParams = $call->getParamsForMultiRequest($i);
$callFiles = $call->getFilesForMultiRequest($i);
$params = array_merge($params, $callParams);
$files = array_merge($files, $callFiles);
$i++;
}
}
else
{
$call = $this->callsQueue[0];
$url .= $call->service."&action=".$call->action;
$params = array_merge($params, $call->params);
$files = $call->files;
}
$signature = $this->signature($params);
$this->addParam($params, "kalsig", $signature);
try
{
list($postResult, $error) = $this->doHttpRequest($url, $params, $files);
}
catch(Exception $e)
{
$this->resetRequest();
throw $e;
}
if ($error)
{
$this->resetRequest();
throw new KalturaClientException($error, KalturaClientException::ERROR_GENERIC);
}
else
{
// print server debug info to log
$serverName = null;
$serverSession = null;
foreach ($this->responseHeaders as $curHeader)
{
$splittedHeader = explode(':', $curHeader, 2);
if ($splittedHeader[0] == 'X-Me')
$serverName = trim($splittedHeader[1]);
else if ($splittedHeader[0] == 'X-Kaltura-Session')
$serverSession = trim($splittedHeader[1]);
}
if (!is_null($serverName) || !is_null($serverSession))
$this->log("server: [{$serverName}], session: [{$serverSession}]");
$this->log("result (serialized): " . $postResult);
if($this->returnServedResult)
{
$result = $postResult;
}
elseif($this->destinationPath)
{
if(!$postResult)
{
$this->resetRequest();
throw new KalturaClientException("failed to download file", KalturaClientException::ERROR_READ_FAILED);
}
}
elseif ($this->config->format == self::KALTURA_SERVICE_FORMAT_PHP)
{
$result = @unserialize($postResult);
if ($result === false && serialize(false) !== $postResult)
{
$this->resetRequest();
throw new KalturaClientException("failed to unserialize server result\n$postResult", KalturaClientException::ERROR_UNSERIALIZE_FAILED);
}
$dump = print_r($result, true);
$this->log("result (object dump): " . $dump);
}
else
{
$this->resetRequest();
throw new KalturaClientException("unsupported format: $postResult", KalturaClientException::ERROR_FORMAT_NOT_SUPPORTED);
}
}
$this->resetRequest();
$endTime = microtime (true);
$this->log("execution time for [".$url."]: [" . ($endTime - $startTime) . "]");
return $result;
}
/**
* Sign array of parameters
*
* @param array $params
* @return string
*/
private function signature($params)
{
ksort($params);
$str = "";
foreach ($params as $k => $v)
{
$str .= $k.$v;
}
return md5($str);
}
/**
* Send http request by using curl (if available) or php stream_context
*
* @param string $url
* @param parameters $params
* @return array of result and error
*/
protected function doHttpRequest($url, $params = array(), $files = array())
{
if (function_exists('curl_init'))
return $this->doCurl($url, $params, $files);
if($this->destinationPath || $this->returnServedResult)
throw new KalturaClientException("Downloading files is not supported with stream context http request, please use curl.", KalturaClientException::ERROR_DOWNLOAD_NOT_SUPPORTED);
return $this->doPostRequest($url, $params, $files);
}
/**
* Curl HTTP POST Request
*
* @param string $url
* @param array $params
* @param array $files
* @return array of result and error
*/
private function doCurl($url, $params = array(), $files = array())
{
$opt = http_build_query($params, null, "&");
// Force POST in case we have files
if(count($files) > 0) {
$this->config->method = self::METHOD_POST;
}
// Check for GET and append params to url
if( $this->config->method == self::METHOD_GET ) {
$url = $url . '&' . $opt;
}
$this->responseHeaders = array();
$cookies = array();
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
if( $this->config->method == self::METHOD_POST ) {
curl_setopt($ch, CURLOPT_POST, 1);
$this->log("curl: $url&$opt");
if (count($files) > 0)
{
foreach ($files as &$file) {
// The usage of the @filename API for file uploading is
// deprecated since PHP 5.5. CURLFile must be used instead.
if (PHP_VERSION_ID >= 50500) {
$file = new \CURLFile($file);
} else {
$file = "@" . $file; // let curl know its a file
}
}
curl_setopt($ch, CURLOPT_POSTFIELDS, array_merge($params, $files));
}
else
{
curl_setopt($ch, CURLOPT_POSTFIELDS, $opt);
}
}
curl_setopt($ch, CURLOPT_ENCODING, 'gzip,deflate');
curl_setopt($ch, CURLOPT_USERAGENT, $this->config->userAgent);
if (count($files) > 0)
curl_setopt($ch, CURLOPT_TIMEOUT, 0);
else
curl_setopt($ch, CURLOPT_TIMEOUT, $this->config->curlTimeout);
if ($this->config->startZendDebuggerSession === true)
{
$zendDebuggerParams = $this->getZendDebuggerParams($url);
$cookies = array_merge($cookies, $zendDebuggerParams);
}
if (count($cookies) > 0)
{
$cookiesStr = http_build_query($cookies, null, '; ');
curl_setopt($ch, CURLOPT_COOKIE, $cookiesStr);
}
if (isset($this->config->proxyHost)) {
curl_setopt($ch, CURLOPT_HTTPPROXYTUNNEL, true);
curl_setopt($ch, CURLOPT_PROXY, $this->config->proxyHost);
if (isset($this->config->proxyPort)) {
curl_setopt($ch, CURLOPT_PROXYPORT, $this->config->proxyPort);
}
if (isset($this->config->proxyUser)) {
curl_setopt($ch, CURLOPT_PROXYUSERPWD, $this->config->proxyUser.':'.$this->config->proxyPassword);
}
if (isset($this->config->proxyType) && $this->config->proxyType === 'SOCKS5') {
curl_setopt($ch, CURLOPT_PROXYTYPE, CURLPROXY_SOCKS5);
}
}
// Set SSL verification
if(!$this->getConfig()->verifySSL)
{
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
}
elseif($this->getConfig()->sslCertificatePath)
{
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, true);
curl_setopt($ch, CURLOPT_CAINFO, $this->getConfig()->sslCertificatePath);
}
// Set custom headers
curl_setopt($ch, CURLOPT_HTTPHEADER, $this->config->requestHeaders );
// Save response headers
curl_setopt($ch, CURLOPT_HEADERFUNCTION, array($this, 'readHeader') );
$destinationResource = null;
if($this->destinationPath)
{
$destinationResource = fopen($this->destinationPath, "wb");
curl_setopt($ch, CURLOPT_FILE, $destinationResource);
}
else
{
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
}
$result = curl_exec($ch);
if($destinationResource)
fclose($destinationResource);
$curlError = curl_error($ch);
curl_close($ch);
return array($result, $curlError);
}
/**
* HTTP stream context request
*
* @param string $url
* @param array $params
* @return array of result and error
*/
private function doPostRequest($url, $params = array(), $files = array())
{
if (count($files) > 0)
throw new KalturaClientException("Uploading files is not supported with stream context http request, please use curl.", KalturaClientException::ERROR_UPLOAD_NOT_SUPPORTED);
$formattedData = http_build_query($params , "", "&");
$this->log("post: $url&$formattedData");
$params = array('http' => array(
"method" => "POST",
"User-Agent: " . $this->config->userAgent . "\r\n".
"Accept-language: en\r\n".
"Content-type: application/x-www-form-urlencoded\r\n",
"content" => $formattedData
));
if (isset($this->config->proxyType) && $this->config->proxyType === 'SOCKS5') {
throw new KalturaClientException("Cannot use SOCKS5 without curl installed.", KalturaClientException::ERROR_CONNECTION_FAILED);
}
if (isset($this->config->proxyHost)) {
$proxyhost = 'tcp://' . $this->config->proxyHost;
if (isset($this->config->proxyPort)) {
$proxyhost = $proxyhost . ":" . $this->config->proxyPort;
}
$params['http']['proxy'] = $proxyhost;
$params['http']['request_fulluri'] = true;
if (isset($this->config->proxyUser)) {
$auth = base64_encode($this->config->proxyUser.':'.$this->config->proxyPassword);
$params['http']['header'] = 'Proxy-Authorization: Basic ' . $auth;
}
}
$ctx = stream_context_create($params);
$fp = @fopen($url, 'rb', false, $ctx);
if (!$fp) {
$phpErrorMsg = "";
throw new KalturaClientException("Problem with $url, $phpErrorMsg", KalturaClientException::ERROR_CONNECTION_FAILED);
}
$response = @stream_get_contents($fp);
if ($response === false) {
throw new KalturaClientException("Problem reading data from $url, $phpErrorMsg", KalturaClientException::ERROR_READ_FAILED);
}
return array($response, '');
}
/**
* @param boolean $returnServedResult
*/
public function setReturnServedResult($returnServedResult)
{
$this->returnServedResult = $returnServedResult;
}
/**
* @return boolean
*/
public function getReturnServedResult()
{
return $this->returnServedResult;
}
/**
* @param string $destinationPath
*/
public function setDestinationPath($destinationPath)
{
$this->destinationPath = $destinationPath;
}
/**
* @return string
*/
public function getDestinationPath()
{
return $this->destinationPath;
}
/**
* @return KalturaConfiguration
*/
public function getConfig()
{
return $this->config;
}
/**
* @param KalturaConfiguration $config
*/
public function setConfig(KalturaConfiguration $config)
{
$this->config = $config;
$logger = $this->config->getLogger();
if ($logger instanceof IKalturaLogger)
{
$this->shouldLog = true;
}
}
public function setClientConfiguration(KalturaClientConfiguration $configuration)
{
$params = get_class_vars('KalturaClientConfiguration');
foreach($params as $param)
{
if(is_null($configuration->$param))
{
if(isset($this->clientConfiguration[$param]))
{
unset($this->clientConfiguration[$param]);
}
}
else
{
$this->clientConfiguration[$param] = $configuration->$param;
}
}
}
public function setRequestConfiguration(KalturaRequestConfiguration $configuration)
{
$params = get_class_vars('KalturaRequestConfiguration');
foreach($params as $param)
{
if(is_null($configuration->$param))
{
if(isset($this->requestConfiguration[$param]))
{
unset($this->requestConfiguration[$param]);
}
}
else
{
$this->requestConfiguration[$param] = $configuration->$param;
}
}
}
/**
* Add parameter to array of parameters that is passed by reference
*
* @param arrat $params
* @param string $paramName
* @param string $paramValue
*/
public function addParam(&$params, $paramName, $paramValue)
{
if ($paramValue === null)
return;
if ($paramValue instanceof KalturaNull) {
$params[$paramName . '__null'] = '';
return;
}
if(is_object($paramValue) && $paramValue instanceof KalturaObjectBase)
{
$this->addParam($params, "$paramName:objectType", get_class($paramValue));
foreach($paramValue as $prop => $val)
$this->addParam($params, "$paramName:$prop", $val);
return;
}
if(!is_array($paramValue))
{
$params[$paramName] = (string)$paramValue;
return;
}
if ($paramValue)
{
foreach($paramValue as $subParamName => $subParamValue)
$this->addParam($params, "$paramName:$subParamName", $subParamValue);
}
else
{
$this->addParam($params, "$paramName:-", "");
}
}
/**
* Validate the result object and throw exception if its an error
*
* @param object $resultObject
*/
public function throwExceptionIfError($resultObject)
{
if ($this->isError($resultObject))
{
throw new KalturaException($resultObject["message"], $resultObject["code"], $resultObject["args"]);
}
}
/**
* Checks whether the result object is an error
*
* @param object $resultObject
*/
public function isError($resultObject)
{
return (is_array($resultObject) && isset($resultObject["message"]) && isset($resultObject["code"]));
}
/**
* Validate that the passed object type is of the expected type
*
* @param any $resultObject
* @param string $objectType
*/
public function validateObjectType($resultObject, $objectType)
{
$knownNativeTypes = array("boolean", "integer", "double", "string");
if (is_null($resultObject) ||
( in_array(gettype($resultObject) ,$knownNativeTypes) &&
in_array($objectType, $knownNativeTypes) ) )
{
return;// we do not check native simple types
}
else if ( is_object($resultObject) )
{
if (!($resultObject instanceof $objectType)){
throw new KalturaClientException("Invalid object type - not instance of $objectType", KalturaClientException::ERROR_INVALID_OBJECT_TYPE);
}
}
else if(gettype($resultObject) !== $objectType)
{
throw new KalturaClientException("Invalid object type", KalturaClientException::ERROR_INVALID_OBJECT_TYPE);
}
}
public function startMultiRequest()
{
$this->isMultiRequest = true;
}
public function doMultiRequest()
{
return $this->doQueue();
}
public function isMultiRequest()
{
return $this->isMultiRequest;
}
public function getMultiRequestQueueSize()
{
return count($this->callsQueue);
}
public function getMultiRequestResult()
{
return new MultiRequestSubResult($this->getMultiRequestQueueSize() . ':result');
}
/**
* @param string $msg
*/
protected function log($msg)
{
if ($this->shouldLog)
$this->config->getLogger()->log($msg);
}
/**
* Return a list of parameter used to a new start debug on the destination server api
* @link http://kb.zend.com/index.php?View=entry&EntryID=434
* @param $url
*/
protected function getZendDebuggerParams($url)
{
$params = array();
$passThruParams = array('debug_host',
'debug_fastfile',
'debug_port',
'start_debug',
'send_debug_header',
'send_sess_end',
'debug_jit',
'debug_stop',
'use_remote');
foreach($passThruParams as $param)
{
if (isset($_COOKIE[$param]))
$params[$param] = $_COOKIE[$param];
}
$params['original_url'] = $url;
$params['debug_session_id'] = microtime(true); // to create a new debug session
return $params;
}
public function generateSession($adminSecretForSigning, $userId, $type, $partnerId, $expiry = 86400, $privileges = '')
{
$rand = rand(0, 32000);
$expiry = time()+$expiry;
$fields = array (
$partnerId ,
$partnerId ,
$expiry ,
$type,
$rand ,
$userId ,
$privileges
);
$info = implode ( ";" , $fields );
$signature = $this->hash ( $adminSecretForSigning , $info );
$strToHash = $signature . "|" . $info ;
$encoded_str = base64_encode( $strToHash );
return $encoded_str;
}
public static function generateSessionV2($adminSecretForSigning, $userId, $type, $partnerId, $expiry, $privileges)
{
// build fields array
$fields = array();
foreach (explode(',', $privileges) as $privilege)
{
$privilege = trim($privilege);
if (!$privilege)
continue;
if ($privilege == '*')
$privilege = 'all:*';
$splittedPrivilege = explode(':', $privilege, 2);
if (count($splittedPrivilege) > 1)
$fields[$splittedPrivilege[0]] = $splittedPrivilege[1];
else
$fields[$splittedPrivilege[0]] = '';
}
$fields[self::FIELD_EXPIRY] = time() + $expiry;
$fields[self::FIELD_TYPE] = $type;
$fields[self::FIELD_USER] = $userId;
// build fields string
$fieldsStr = http_build_query($fields, '', '&');
$rand = '';
for ($i = 0; $i < self::RANDOM_SIZE; $i++)
$rand .= chr(rand(0, 0xff));
$fieldsStr = $rand . $fieldsStr;
$fieldsStr = sha1($fieldsStr, true) . $fieldsStr;
// encrypt and encode
$encryptedFields = self::aesEncrypt($adminSecretForSigning, $fieldsStr);
$decodedKs = "v2|{$partnerId}|" . $encryptedFields;
return str_replace(array('+', '/'), array('-', '_'), base64_encode($decodedKs));
}
protected static function aesEncrypt($key, $message)
{
return mcrypt_encrypt(
MCRYPT_RIJNDAEL_128,
substr(sha1($key, true), 0, 16),
$message,
MCRYPT_MODE_CBC,
str_repeat("\0", 16) // no need for an IV since we add a random string to the message anyway
);
}
private function hash ( $salt , $str )
{
return sha1($salt.$str);
}
/**
* @return KalturaNull
*/
public static function getKalturaNullValue()
{
return KalturaNull::getInstance();
}
}
/**
* @package Kaltura
* @subpackage Client
*/
interface IKalturaClientPlugin
{
/**
* @return KalturaClientPlugin
*/
public static function get(KalturaClient $client);
/**
* @return array<KalturaServiceBase>
*/
public function getServices();
/**
* @return string
*/
public function getName();
}
/**
* @package Kaltura
* @subpackage Client
*/
abstract class KalturaClientPlugin implements IKalturaClientPlugin
{
protected function __construct(KalturaClient $client)
{
}
}
/**
* @package Kaltura
* @subpackage Client
*/
class KalturaServiceActionCall
{
/**
* @var string
*/