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KalturaClientBase.php
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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) 2006-2023 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 . ':' . $name);
}
#[\ReturnTypeWillChange]
public function offsetExists($offset)
{
return true;
}
#[\ReturnTypeWillChange]
public function offsetGet($offset)
{
return new MultiRequestSubResult($this->value . ':' . $offset);
}
#[\ReturnTypeWillChange]
public function offsetSet($offset, $value)
{
}
#[\ReturnTypeWillChange]
public function offsetUnset($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->getServiceUrl() . "]");
// 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 = $this->config->getServiceUrl() . "/api_v3/service/{$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->getServiceUrl() . "]");
// 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 = $this->config->getServiceUrl()."/api_v3/service";
if ($this->isMultiRequest)
{
$url .= "/multirequest";
$i = 0;
foreach ($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(':', $curHeader, 2);
if (strtolower($splittedHeader[0]) == 'x-me')
$serverName = trim($splittedHeader[1]);
else if (strtolower($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): " . $dump);
}
elseif ($this->config->format == self::KALTURA_SERVICE_FORMAT_JSON)
{
$result = json_decode($postResult);
if(is_null($result) && strtolower($postResult) !== 'null')
{
$this->resetRequest();
throw new KalturaClientException("failed to unserialize server result\n$postResult", KalturaClientException::ERROR_UNSERIALIZE_FAILED);
}
$result = $this->jsObjectToClientObject($result);
$dump = print_r($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 $result;
}
protected static function getFirstLines(&$string, $numbOfLines)
{
$stringAsArrayOfLines = explode(PHP_EOL,$string);
$stringAsArrayOfLines = array_slice($stringAsArrayOfLines, 0, $numbOfLines);
$string = implode (PHP_EOL, $stringAsArrayOfLines);
}
/**
* Sorts array recursively
*
* @param array $params
* @param int $flags
* @return boolean
*/
protected function ksortRecursive(&$array, $flags = SORT_REGULAR)
{
ksort($array, $flags);
foreach($array as &$arr) {
if(is_array($arr))
$this->ksortRecursive($arr, $flags);
}
return true;
}
/**
* Sign array of parameters
*
* @param array $params
* @return string
*/
private function signature($params)
{
$this->ksortRecursive($params);
return md5($this->jsonEncode($params));
}
/**
* 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())
{
$requestHeaders = $this->config->requestHeaders;
$params = $this->jsonEncode($params);
$this->log("curl: $url");
$this->log("post: $params");
if($this->config->format == self::KALTURA_SERVICE_FORMAT_JSON)
{
$requestHeaders[] = 'Accept: application/json';
}
$this->responseHeaders = array();
$cookies = array();
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
if($this->config->method == self::METHOD_POST) {
curl_setopt($ch, CURLOPT_POST, 1);
if (count($files) > 0)
{
$params = array('json' => $params);
foreach ($files as $key => $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) {
$params[$key] = new \CURLFile($file);
} else {
$params[$key] = "@" . $file; // let curl know its a file
}
}
curl_setopt($ch, CURLOPT_POSTFIELDS, $params);
}
else
{
$requestHeaders[] = 'Content-Type: application/json';
curl_setopt($ch, CURLOPT_POSTFIELDS, $params);
}
}
curl_setopt($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, '', '; ');
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, $requestHeaders);
// Save response headers
curl_setopt($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 => $value)
{
if(is_null($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 => $value)
{
if(is_null($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 array $params
* @param string $paramName
* @param string $paramValue
*/
public function addParam(array &$params, $paramName, $paramValue)
{
if ($paramValue === null)
return;
if ($paramValue instanceof KalturaNull) {
$params[$paramName . '__null'] = '';
return;
}
if(is_object($paramValue) && $paramValue instanceof KalturaObjectBase)
{
$params[$paramName] = array(
'objectType' => get_class($paramValue)
);
foreach($paramValue as $prop => $val)
$this->addParam($params[$paramName], $prop, $val);
return;
}
if(is_bool($paramValue))
{
$params[$paramName] = $paramValue;
return;
}
if(!is_array($paramValue))
{
$params[$paramName] = (string)$paramValue;
return;
}
$params[$paramName] = array();
if ($paramValue)
{
foreach($paramValue as $subParamName => $subParamValue)
$this->addParam($params[$paramName], $subParamName, $subParamValue);
}
else
{
$params[$paramName]['-'] = '';
}
}
/**
* @param mixed $value
* @return mixed
*/
public function jsObjectToClientObject($value)
{
if(is_array($value))
{
foreach($value as &$item)
{
$item = $this->jsObjectToClientObject($item);
}
}
if(is_object($value))
{
if(isset($value->message) && isset($value->code))
{
if($this->isMultiRequest)
{
if(isset($value->args))
{
$value->args = (array) $value->args;
}
return (array) $value;
}
throw new KalturaException($value->message, $value->code, $value->args);
}
if(!isset($value->objectType))
{
if (isset($value->result))
{
$value = $this->jsObjectToClientObject($value->result);
}
else if (isset($value->error))
{
$this->jsObjectToClientObject($value->error);
}
else
{
throw new KalturaClientException("Response format not supported - objectType is required for all objects", KalturaClientException::ERROR_FORMAT_NOT_SUPPORTED);
}
}
$objectType = $value->objectType;
$object = new $objectType();
$attributes = get_object_vars($value);
foreach($attributes as $attribute => $attributeValue)
{
if($attribute === 'objectType')
{
continue;
}
$object->$attribute = $this->jsObjectToClientObject($attributeValue);
}
$value = $object;
}
return $value;
}
/**
* Encodes objects
* @param mixed $value
* @return string
*/
public function jsonEncode($value)
{
return json_encode($this->unsetNull($value));
}
protected function unsetNull($object)
{
if(!is_array($object) && !is_object($object))
return $object;
if(is_object($object) && $object instanceof MultiRequestSubResult)
return "$object";
$array = (array) $object;
foreach($array as $key => $value)
{
if(is_null($value))
{
unset($array[$key]);
}
else
{
$array[$key] = $this->unsetNull($value);
}
}
if(is_object($object))
$array['objectType'] = get_class($object);
return $array;
}
/**
* 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 $objectType", KalturaClientException::ERROR_INVALID_OBJECT_TYPE);
}
}
else if(class_exists($objectType) && is_subclass_of($objectType, 'KalturaEnumBase'))
{
$enum = new ReflectionClass($objectType);
$values = array_map('strval', $enum->getConstants());
if(!in_array($resultObject, $values))
{
throw new KalturaClientException("Invalid enum value", KalturaClientException::ERROR_INVALID_ENUM_VALUE);
}
}
else if(gettype($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 ($this->shouldLog)
{
if(isset($this->config->max_print))