t_response *t_phone_user::create_options_response(t_request *r,
bool in_dialog) const
{
t_response *resp;
// RFC 3261 11.2
switch(phone->get_state()) {
case PS_IDLE:
if (!in_dialog && service->is_dnd_active()) {
resp = r->create_response(R_480_TEMP_NOT_AVAILABLE);
} else {
resp = r->create_response(R_200_OK);
}
break;
case PS_BUSY:
if (in_dialog) {
resp = r->create_response(R_200_OK);
} else {
resp = r->create_response(R_486_BUSY_HERE);
}
break;
default:
assert(false);
}
SET_HDR_ALLOW(resp->hdr_allow, user_config);
SET_HDR_ACCEPT(resp->hdr_accept);
SET_HDR_ACCEPT_ENCODING(resp->hdr_accept_encoding);
SET_HDR_ACCEPT_LANGUAGE(resp->hdr_accept_language);
SET_HDR_SUPPORTED(resp->hdr_supported, user_config);
if (user_config->get_ext_100rel() != EXT_DISABLED) {
resp->hdr_supported.add_feature(EXT_100REL);
}
// TODO: include SDP body if requested (optional)
return resp;
}
void t_transaction_layer::recvd_request(t_request *r, t_tid tid,
t_tid tid_cancel_target)
{
bool fatal;
string reason;
t_response *resp;
lock();
// Return a 400 response if the SIP headers are wrong
if (!r->is_valid(fatal, reason)) {
resp = r->create_response(R_400_BAD_REQUEST, reason);
send_response(resp, 0, tid);
MEMMAN_DELETE(resp);
delete resp;
unlock();
return;
}
// Return a 400 response if the SIP body contained a parse error
if (r->body && r->body->invalid) {
resp = r->create_response(R_400_BAD_REQUEST, "Invalid SIP body.");
send_response(resp, 0, tid);
MEMMAN_DELETE(resp);
delete resp;
unlock();
return;
}
// If a message exceeded the maximum message size, than the body
// is not parsed by the listener.
if (r->hdr_content_length.is_populated() &&
r->hdr_content_length.length > 0 &&
!r->body)
{
resp = r->create_response(R_513_MESSAGE_TOO_LARGE);
send_response(resp, 0, tid);
MEMMAN_DELETE(resp);
delete resp;
unlock();
return;
}
// RFC 3261 8.2.3
// Return a 415 response if content encoding is not supported
if (r->body && r->hdr_content_encoding.is_populated()) {
for (list<t_coding>::iterator it = r->hdr_content_encoding.coding_list.begin();
it != r->hdr_content_encoding.coding_list.end(); ++it)
{
if (!CONTENT_ENCODING_SUPPORTED(it->content_coding)) {
resp = r->create_response(R_415_UNSUPPORTED_MEDIA_TYPE);
SET_HDR_ACCEPT_ENCODING(resp->hdr_accept_encoding);
send_response(resp, 0, tid);
MEMMAN_DELETE(resp);
delete resp;
unlock();
return;
}
}
}
// Check if URI scheme is supported
if (r->uri.get_scheme() != "sip") {
resp = r->create_response(R_416_UNSUPPORTED_URI_SCHEME);
send_response(resp, 0, tid);
MEMMAN_DELETE(resp);
delete resp;
unlock();
return;
}
switch(r->method) {
case INVITE:
recvd_invite(r, tid);
break;
case ACK:
recvd_ack(r, tid);
break;
case CANCEL:
recvd_cancel(r, tid, tid_cancel_target);
break;
case BYE:
recvd_bye(r, tid);
break;
case OPTIONS:
recvd_options(r, tid);
break;
case REGISTER:
recvd_register(r, tid);
break;
case PRACK:
recvd_prack(r, tid);
break;
case SUBSCRIBE:
recvd_subscribe(r, tid);
break;
case NOTIFY:
recvd_notify(r, tid);
break;
case REFER:
recvd_refer(r, tid);
break;
case INFO:
recvd_info(r, tid);
break;
case MESSAGE:
recvd_message(r, tid);
break;
default:
resp = r->create_response(R_501_NOT_IMPLEMENTED);
send_response(resp, 0, tid);
MEMMAN_DELETE(resp);
delete resp;
break;
}
post_process_request(r, tid, tid_cancel_target);
unlock();
}
