/* Handle incoming calls */
static void sipsess_conn_handler(const struct sip_msg *msg, void *arg)
{
const struct sip_hdr *hdr;
struct ua *ua;
struct call *call = NULL;
char to_uri[256];
int err;
(void)arg;
ua = uag_find(&msg->uri.user);
if (!ua) {
warning("ua: %r: UA not found: %r\n",
&msg->from.auri, &msg->uri.user);
(void)sip_treply(NULL, uag_sip(), msg, 404, "Not Found");
return;
}
/* handle multiple calls */
if (list_count(&ua->calls) + 1 > MAX_CALLS) {
info("ua: rejected call from %r (maximum %d calls)\n",
&msg->from.auri, MAX_CALLS);
(void)sip_treply(NULL, uag.sip, msg, 486, "Busy Here");
return;
}
/* Handle Require: header, check for any required extensions */
hdr = sip_msg_hdr_apply(msg, true, SIP_HDR_REQUIRE,
require_handler, ua);
if (hdr) {
info("ua: call from %r rejected with 420"
" -- option-tag '%r' not supported\n",
&msg->from.auri, &hdr->val);
(void)sip_treplyf(NULL, NULL, uag.sip, msg, false,
420, "Bad Extension",
"Unsupported: %r\r\n"
"Content-Length: 0\r\n\r\n",
&hdr->val);
return;
}
(void)pl_strcpy(&msg->to.auri, to_uri, sizeof(to_uri));
err = ua_call_alloc(&call, ua, VIDMODE_ON, msg, NULL, to_uri);
if (err) {
warning("ua: call_alloc: %m\n", err);
goto error;
}
err = call_accept(call, uag.sock, msg);
if (err)
goto error;
return;
error:
mem_deref(call);
(void)sip_treply(NULL, uag.sip, msg, 500, "Call Error");
}
static bool request_handler(const struct sip_msg *msg, void *arg)
{
struct message *message = arg;
struct ua *ua;
struct le *le = message->lsnrl.head;
bool hdld = false;
if (pl_strcmp(&msg->met, "MESSAGE"))
return false;
ua = uag_find(&msg->uri.user);
if (!ua) {
(void)sip_treply(NULL, uag_sip(), msg, 404, "Not Found");
return true;
}
while (le) {
struct message_lsnr *lsnr = le->data;
le = le->next;
handle_message(lsnr, ua, msg);
hdld = true;
}
return hdld;
}
static bool sub_handler(const struct sip_msg *msg, void *arg)
{
struct ua *ua;
(void)arg;
ua = uag_find(&msg->uri.user);
if (!ua) {
warning("presence: no UA found for %r\n", &msg->uri.user);
(void)sip_treply(NULL, uag_sip(), msg, 404, "Not Found");
return true;
}
if (notifier_add(evsock, msg, ua))
(void)sip_treply(NULL, uag_sip(), msg, 400, "Bad Presence");
return true;
}
static bool request_handler(const struct sip_msg *msg, void *arg)
{
struct ua *ua;
(void)arg;
if (pl_strcmp(&msg->met, "MESSAGE"))
return false;
ua = uag_find(&msg->uri.user);
if (!ua) {
(void)sip_treply(NULL, uag_sip(), msg, 404, "Not Found");
return true;
}
handle_message(ua, msg);
return true;
}
