private function processSubscribe()
{
$dom = $this->dom;
$headerNode = $dom->getElementsByTagName('SIF_Header')->item(0);
$originalMsgId = $headerNode->getElementsByTagName('SIF_MsgId')->item(0)->nodeValue;
$originalSourceId = $headerNode->getElementsByTagName('SIF_SourceId')->item(0)->nodeValue;
if ($headerNode->getElementsByTagName('SIF_Timestamp')->item(0)) {
$originalTimestamp = $headerNode->getElementsByTagName('SIF_Timestamp')->item(0)->nodeValue;
} else {
$originalTimestamp = Utility::createTimestamp();
}
$this->originalSourceId = $originalSourceId;
$this->originalMsgId = $originalMsgId;
$validSourceId = Agent::checkSourceId($originalSourceId);
if (!$validSourceId) {
ProvisionError::invalidSourceId($originalSourceId, $originalMsgId);
exit;
} else {
$agent = new Agent($originalSourceId);
$this->agent = $agent;
if (!$this->agent->isRegistered()) {
RegisterError::notRegisteredError($originalSourceId, $originalMsgId);
exit;
} else {
$objects = $dom->getElementsByTagName('SIF_Object');
foreach ($objects as $object) {
$objectName = $object->getAttribute('ObjectName');
$contexts = $object->getElementsByTagName('SIF_Context');
if (!DataObject::objectExists($objectName)) {
ProvisionError::invalidObject($originalSourceId, $originalMsgId, $objectName);
exit;
} else {
if ($contexts->length != 0) {
foreach ($contexts as $context) {
if (Context::isValidContext($context->nodeValue)) {
$contextId = Context::getContextId($context->nodeValue);
if (!DataObject::allowedToSubscribe($agent->agentId, $objectName, $contextId)) {
ProvisionError::invalidPermissionToSubscribe($originalSourceId, $originalMsgId, $objectName);
exit;
} else {
$dataObject = new DataObject($objectName);
$dataObject->contextId = $contextId;
array_push($this->subscribeObjects, $dataObject);
}
//check if allowed to subscribe
} else {
ProvisionError::contextNotSupportedError($originalSourceId, $originalMsgId);
exit;
}
}
//loop through contexts
} else {
if (!DataObject::allowedToSubscribe($agent->agentId, $objectName)) {
ProvisionError::invalidPermissionToSubscribe($originalSourceId, $originalMsgId, $objectName);
exit;
} else {
$dataObject = new DataObject($objectName);
array_push($this->subscribeObjects, $dataObject);
}
//check if allowed to subscribe
}
// check if there are contexts
}
//check if object is valid
}
//loop through objects
}
//check if registered
}
//check sourceId
}
