/**
* Retrieves the originating source of a message into a r_nat_dest structure.
* @param msg - the SIP message
* @param pinhole - where to save to
* @returns 1 on success, -1 on error
*/
r_nat_dest* nat_msg_origin(struct sip_msg * msg) {
r_nat_dest *pinhole=NULL;
if (!pcscf_nat_enable) return NULL;
if(pcscf_nat_pingall || nat_uac_test(msg)) {
pinhole = shm_malloc(sizeof(r_nat_dest));
if (pinhole == NULL) {
LOG(L_ERR,"ERR:"M_NAME":nat_msg_origin:no memory\n");
return NULL;
}
memcpy(&pinhole->nat_addr, &msg->rcv.src_ip, sizeof(struct ip_addr));
pinhole -> nat_port = msg -> rcv.src_port;
}
return pinhole;
}
/**
* Retrieves the originating source of a message into a r_nat_dest structure.
* @param msg - the SIP message
* @param pinhole - where to save to
* @returns 1 on success, -1 on error
*/
int nat_msg_origin(struct sip_msg * msg, r_nat_dest ** pinhole) {
if (!pcscf_nat_enable) {
*pinhole = NULL;
return -1;
}
if(pcscf_nat_pingall || nat_uac_test(msg)) {
* pinhole = shm_malloc(sizeof(r_nat_dest));
if(* pinhole == NULL) {
LOG(L_ERR,"ERR:"M_NAME"nat_msg_origin:no memory\n");
return -1;
}
memcpy(&(*pinhole)->nat_addr, &msg->rcv.src_ip, sizeof(struct ip_addr));
(*pinhole) -> nat_port = msg -> rcv.src_port;
} else {
*pinhole = NULL;
}
return 1;
}
/**
* Finds if a NAT pinhole would be required to reach this user.
* @param msg - the SIP message
* @returns 1 if yes, 0 if not
*/
int requires_nat(struct sip_msg * msg)
{
return pcscf_nat_enable && (pcscf_nat_pingall || nat_uac_test(msg));
}
