// Static callback routine used to find and replace variable string values in
// subscription content.
// For example the NOTIFY message in the SIP stack contains "&version;" rather
// than an actual version number [like "22"].
// The content provided by publish() provides the "context
// independent" part of the content, and the SIP stack keeps knowledge
// of the version number sequence for each subscription. This
// callback combines these sources of information.
UtlBoolean SipSubscribeServer::standardVersionCallback(SipMessage& notifyRequest,
int version)
{
// Search and replace the version number in the Notify.
UtlBoolean result = FALSE;
if (notifyRequest.getBody() != NULL)
{
UtlString msgBytes;
ssize_t msgLength;
// Extract the NOTIFY body as a UtlString.
notifyRequest.getBody()->getBytes(&msgBytes, &msgLength);
const char* contentType = notifyRequest.getBody()->getContentType();
// Look for the placeholder for the version number, "&version;".
ssize_t msgIndex = msgBytes.index(VERSION_PLACEHOLDER);
if (msgIndex != UTL_NOT_FOUND)
{
char buffer[20];
sprintf(buffer, "%d", version);
msgBytes.replace(msgIndex, sizeof (VERSION_PLACEHOLDER) - 1, buffer);
HttpBody* tempBody =
new HttpBody(msgBytes.data(), msgBytes.length(), contentType);
// Write the new message contents (this deletes the old body)
notifyRequest.setBody(tempBody);
result = TRUE;
}
}
return result;
}
