UtlBoolean SipSubscribeServer::handleSubscribe(const SipMessage& subscribeRequest)
{
UtlBoolean handledSubscribe = FALSE;
UtlString eventName;
subscribeRequest.getEventField(&eventName, NULL);
// Not modifying the SubscribeServerEventData, just reading it
lockForRead();
// Get the event specific handler and information
SubscribeServerEventData* eventPackageInfo =
dynamic_cast <SubscribeServerEventData*> (mEventDefinitions.find(&eventName));
// We handle this event type
if (eventPackageInfo)
{
handledSubscribe = TRUE;
SipSubscribeServerEventHandler* handler =
eventPackageInfo->mpEventSpecificHandler;
SipMessage subscribeResponse;
// Check if authenticated (or if it needs to be authenticated)
if (handler->isAuthenticated(subscribeRequest,
subscribeResponse))
{
// Check if authorized (or if authorization is required)
if (handler->isAuthorized(subscribeRequest,
subscribeResponse))
{
// The subscription is allowed, so update the
// subscription state. Set the To field tag if
// this request initiated the dialog
UtlString subscribeDialogHandle;
UtlBoolean isNewDialog;
UtlBoolean isExpiredSubscription;
UtlString resourceId, eventTypeKey, eventType;
eventPackageInfo->mpEventSpecificSubscriptionMgr->
updateDialogInfo(
subscribeRequest,
resourceId,
eventTypeKey,
eventType,
subscribeDialogHandle,
isNewDialog,
isExpiredSubscription,
subscribeResponse,
// The event-specific handler provides a getKeys method
// which is used to determine the resource ID
// and event type if this is a new subscription.
*handler);
// Build a NOTIFY
SipMessage notifyRequest;
// Set the dialog information into the NOTIFY.
// Note that the dialog can have ended by now, because of
// a race condition with the processing of dialog-ending
// messages from the outside world.
if (eventPackageInfo->mpEventSpecificSubscriptionMgr->
getNotifyDialogInfo(subscribeDialogHandle,
notifyRequest,
"active;expires=%ld"))
{
// We still have record of the dialog, so the
// NOTIFY headers were set.
// Set the NOTIFY content
UtlString acceptHeaderValue;
if (!subscribeRequest.getAcceptField(acceptHeaderValue))
{
// No Accept header seen, set special value allowing any
// content type.
acceptHeaderValue = SipPublishContentMgr::acceptAllTypes;
}
// Note that since this NOTIFY is due to a SUBSCRIBE,
// it should contain 'full' content. Hence,
// the fullState parameter of getNotifyContent is TRUE,
// and is not taken from
// eventPackageInfo->mEventSpecificFullState.
UtlString availableMediaTypes;
if (handler->getNotifyContent(resourceId,
eventTypeKey,
eventType,
*(eventPackageInfo->mpEventSpecificContentMgr),
acceptHeaderValue,
notifyRequest,
TRUE,
&availableMediaTypes))
{
// Update the NOTIFY content if required for this event type.
// Sets 'version' and 'eventTypeKey'.
int version;
eventPackageInfo->mpEventSpecificSubscriptionMgr->
updateNotifyVersion(eventPackageInfo->mpEventSpecificContentVersionCallback,
notifyRequest,
version,
eventTypeKey);
// Update the saved record of the NOTIFY CSeq and the
// XML version number for the specified eventTypeKey,
// as needed by the subscription manager.
// In practice, this is only used by SipPersistentSubscriptionMgr
// to write the NOTIFY Cseq and XML version into the IMDB.
eventPackageInfo->mpEventSpecificSubscriptionMgr->
updateVersion(notifyRequest, version, eventTypeKey);
// Send the NOTIFY request
setContact(¬ifyRequest);
eventPackageInfo->mpEventSpecificUserAgent->send(notifyRequest);
if (OsSysLog::willLog(FAC_SIP, PRI_INFO))
{
UtlString requestContact;
subscribeRequest.getContactField(0, requestContact);
OsSysLog::add(FAC_SIP, PRI_INFO,
"SipSubscribeServer::handleSubscribe: %s has setup subscription to %s, eventTypeKey %s",
requestContact.data(), resourceId.data(), eventTypeKey.data());
}
}
else
{
// No content was available, so the subscription fails.
// Determine the reason and set the response code.
if (availableMediaTypes.isNull())
{
// No MIME types are available, so the resource does not exist.
subscribeResponse.setResponseFirstHeaderLine(SIP_PROTOCOL_VERSION,
SIP_NOT_FOUND_CODE,
SIP_NOT_FOUND_TEXT);
}
else
{
// MIME types are available, so the resource exists.
subscribeResponse.setResponseFirstHeaderLine(SIP_PROTOCOL_VERSION,
SIP_BAD_MEDIA_CODE,
SIP_BAD_MEDIA_TEXT);
subscribeResponse.setAcceptField(availableMediaTypes);
}
// Destroy the subscription.
eventPackageInfo->mpEventSpecificSubscriptionMgr->
endSubscription(subscribeDialogHandle,
SipSubscriptionMgr::subscriptionTerminated);
// Do not send the NOTIFY.
}
}
else
{
// Oops, the subscription was destroyed while we looked.
OsSysLog::add(FAC_SIP, PRI_WARNING,
"SipSubscribeServer::handleSubscribe "
"subscription '%s' vanished while being processed",
subscribeDialogHandle.data());
}
// Send the response ASAP to minimize resending.
setContact(&subscribeResponse);
eventPackageInfo->mpEventSpecificUserAgent->send(subscribeResponse);
}
// Not authorized
else
{
// Send the response that was prepared by ::isAuthorized().
setContact(&subscribeResponse);
eventPackageInfo->mpEventSpecificUserAgent->send(subscribeResponse);
}
}
// Not authenticated
else
{
// Send the response that was prepared by ::isAuthenticated().
setContact(&subscribeResponse);
eventPackageInfo->mpEventSpecificUserAgent->send(subscribeResponse);
}
}
// We should not have received SUBSCRIBE requests for this event type.
// This event type has not been enabled in this SubscribeServer.
else
{
OsSysLog::add(FAC_SIP, PRI_ERR,
"SipSubscribeServer::handleSubscribe event type: %s not enabled",
eventName.data());
SipMessage eventTypeNotHandled;
eventTypeNotHandled.setResponseData(&subscribeRequest,
SIP_BAD_EVENT_CODE,
SIP_BAD_EVENT_TEXT);
setContact(&eventTypeNotHandled);
mpDefaultUserAgent->send(eventTypeNotHandled);
}
unlockForRead();
return(handledSubscribe);
}
UtlBoolean SipSubscribeServer::handleSubscribe(const SipMessage& subscribeRequest)
{
UtlBoolean handledSubscribe = FALSE;
UtlString eventName;
subscribeRequest.getEventField(&eventName, NULL);
// Not modifying the SubscribeServerEventData, just reading it
lockForRead();
// Get the event specific handler and information
SubscribeServerEventData* eventPackageInfo = (SubscribeServerEventData*)
mEventDefinitions.find(&eventName);
// We handle this event type
if(eventPackageInfo)
{
handledSubscribe = TRUE;
UtlString resourceId;
UtlString eventTypeKey, eventType;
SipSubscribeServerEventHandler* handler =
eventPackageInfo->mpEventSpecificHandler;
// Get the keys used to identify the event state content
handler->getKeys(subscribeRequest,
resourceId,
eventTypeKey,
eventType);
SipMessage subscribeResponse;
// Check if authenticated (or if it needs to be authenticated)
if(handler->isAuthenticated(subscribeRequest,
resourceId,
eventTypeKey,
subscribeResponse))
{
// Check if authorized (or if authorization is required)
if(handler->isAuthorized(subscribeRequest,
resourceId,
eventTypeKey,
subscribeResponse))
{
// The subscription is allowed, so update the
// subscription state. Set the To field tag if
// this request initiated the dialog
UtlString subscribeDialogHandle;
UtlBoolean isNewDialog;
UtlBoolean isExpiredSubscription;
eventPackageInfo->mpEventSpecificSubscriptionMgr->updateDialogInfo(
subscribeRequest,
resourceId,
eventTypeKey,
getMessageQueue(),
subscribeDialogHandle,
isNewDialog,
isExpiredSubscription,
subscribeResponse);
// Send the response ASAP to minimize resend handling of request
eventPackageInfo->mpEventSpecificUserAgent->send(subscribeResponse);
// Build a NOTIFY
SipMessage notifyRequest;
// Set the dialog information
eventPackageInfo->mpEventSpecificSubscriptionMgr->getNotifyDialogInfo(subscribeDialogHandle,
notifyRequest);
// Set the NOTIFY content
UtlString acceptHeaderValue;
subscribeRequest.getAcceptField(acceptHeaderValue);
handler->getNotifyContent(resourceId,
eventTypeKey,
eventType,
*(eventPackageInfo->mpEventSpecificContentMgr),
acceptHeaderValue,
notifyRequest);
// Send the notify request
eventPackageInfo->mpEventSpecificUserAgent->send(notifyRequest);
}
// Not authorized
else
{
// Send the response
eventPackageInfo->mpEventSpecificUserAgent->send(subscribeResponse);
}
}
// Not authenticated
else
{
// Send the response
eventPackageInfo->mpEventSpecificUserAgent->send(subscribeResponse);
}
}
// We should not have received SUBSCRIBE requests for this event type
// This event type has not been enabled in this SubscribeServer
else
{
OsSysLog::add(FAC_SIP, PRI_ERR,
"SipSubscribeServer::handleSubscribe event type: %s not enabled",
eventName.data());
SipMessage eventTypeNotHandled;
eventTypeNotHandled.setResponseData(&subscribeRequest,
SIP_BAD_EVENT_CODE, SIP_BAD_EVENT_TEXT);
mpDefaultUserAgent->send(eventTypeNotHandled);
}
unlockForRead();
return(handledSubscribe);
}
