static void response_handler(int err, const struct sip_msg *msg, void *arg)
{
struct sipnot *not = arg;
DEBUG_WARNING("re.sipevent.notify.response_handler()\n");
if (err) {
if (err == ETIMEDOUT)
not->subscribed = false;
goto out;
}
if (sip_request_loops(¬->ls, msg->scode)) {
not->subscribed = false;
goto out;
}
if (msg->scode < 200) {
return;
}
else if (msg->scode < 300) {
(void)sip_dialog_update(not->dlg, msg);
}
else {
switch (msg->scode) {
case 401:
case 407:
err = sip_auth_authenticate(not->auth, msg);
if (err) {
err = (err == EAUTH) ? 0 : err;
break;
}
err = notify_request(not, false);
if (err)
break;
return;
}
not->subscribed = false;
}
out:
if (not->termsent) {
mem_deref(not);
}
else if (not->terminated) {
if (!not->subscribed || notify_request(not, true))
mem_deref(not);
}
else if (!not->subscribed) {
sipnot_terminate(not, err, msg, -1);
}
else if (not->notify_pending) {
(void)notify_request(not, true);
}
}
static void reinvite_handler(struct sipsess_sock *sock,
const struct sip_msg *msg)
{
struct sip *sip = sock->sip;
struct sipsess *sess;
struct mbuf *desc;
char m[256];
int err;
sess = sipsess_find(sock, msg);
if (!sess || sess->terminated) {
(void)sip_treply(NULL, sip, msg, 481, "Call Does Not Exist");
return;
}
if (!sip_dialog_rseq_valid(sess->dlg, msg)) {
(void)sip_treply(NULL, sip, msg, 500, "Server Internal Error");
return;
}
if (sess->st || sess->awaiting_answer) {
(void)sip_treplyf(NULL, NULL, sip, msg, false,
500, "Server Internal Error",
"Retry-After: 5\r\n"
"Content-Length: 0\r\n"
"\r\n");
return;
}
if (sess->req) {
(void)sip_treply(NULL, sip, msg, 491, "Request Pending");
return;
}
err = sess->offerh(&desc, msg, sess->arg);
if (err) {
(void)sip_reply(sip, msg, 488, str_error(err, m, sizeof(m)));
return;
}
(void)sip_dialog_update(sess->dlg, msg);
(void)sipsess_reply_2xx(sess, msg, 200, "OK", desc,
NULL, NULL);
/* pending modifications considered outdated;
sdp may have changed in above exchange */
sess->desc = mem_deref(sess->desc);
sess->modify_pending = false;
tmr_cancel(&sess->tmr);
mem_deref(desc);
}
static void invite_resp_handler(int err, const struct sip_msg *msg, void *arg)
{
struct sipsess *sess = arg;
struct mbuf *desc = NULL;
if (err || sip_request_loops(&sess->ls, msg->scode))
goto out;
if (msg->scode < 200) {
sess->progrh(msg, sess->arg);
return;
}
else if (msg->scode < 300) {
sess->hdrs = mem_deref(sess->hdrs);
err = sip_dialog_create(sess->dlg, msg);
if (err)
goto out;
if (sess->sent_offer)
err = sess->answerh(msg, sess->arg);
else {
sess->modify_pending = false;
err = sess->offerh(&desc, msg, sess->arg);
}
int err2 = sipsess_ack(sess->sock, sess->dlg, msg->cseq.num,
sess->auth, sess->ctype, desc);
if (err2)
printf("sipsess - sent first ACK for call %.*s, got err %d (%s)\n", msg->callid.l, msg->callid.p, err2, strerror(err2));
err |= err2;
sess->established = true;
mem_deref(desc);
if (err || sess->terminated)
goto out;
if (sess->modify_pending)
(void)sipsess_reinvite(sess, true);
else
sess->desc = mem_deref(sess->desc);
sess->estabh(msg, sess->arg);
return;
}
else if (msg->scode < 400) {
/* Redirect to first Contact */
if (sess->terminated)
goto out;
err = sip_dialog_update(sess->dlg, msg);
if (err)
goto out;
err = invite(sess);
if (err)
goto out;
return;
}
else {
if (sess->terminated)
goto out;
switch (msg->scode) {
case 401:
case 407:
err = sip_auth_authenticate(sess->auth, msg);
if (err) {
err = (err == EAUTH) ? 0 : err;
break;
}
err = invite(sess);
if (err)
break;
return;
}
}
out:
if (!sess->terminated)
sipsess_terminate(sess, err, msg);
else
mem_deref(sess);
}
