// Return codes:
// 2 - No limit
// 1 - Limited
// -1 - No credit
// -2 - Locked
// -3 - Duplicated callid
// -4 - Call limit reached
// -5 - Internal error (message parsing, communication, ...)
static int
CallControl(struct sip_msg *msg, char *str1, char *str2)
{
int result;
struct dlg_cell *dlg;
CallInfo *call;
if (disable)
return 2;
if (msg->first_line.type!=SIP_REQUEST || msg->REQ_METHOD!=METHOD_INVITE || has_to_tag(msg)) {
LM_WARN("call_control should only be called for the first INVITE\n");
return -5;
}
result = call_control_initialize(msg);
if (result == 1) {
// A call with a time limit that will be traced by callcontrol
if (dlg_api.create_dlg(msg, 0) < 0) {
LM_ERR("could not create new dialog\n");
call = get_call_info(msg, CAStop);
if (!call) {
LM_ERR("can't retrieve call info\n");
return -5;
}
call_control_stop(msg, call->callid);
return -5;
}
dlg = dlg_api.get_dlg();
if (!dlg) {
LM_CRIT("error getting dialog\n");
call = get_call_info(msg, CAStop);
if (!call) {
LM_ERR("can't retrieve call info\n");
return -5;
}
call_control_stop(msg, call->callid);
return -5;
}
if (dlg_api.register_dlgcb(dlg, DLGCB_RESPONSE_FWDED, __dialog_replies, NULL, NULL) != 0) {
LM_ERR("cannot register callback for dialog confirmation\n");
call_control_stop(msg, dlg->callid);
return -5;
}
if (dlg_api.register_dlgcb(dlg, DLGCB_TERMINATED | DLGCB_FAILED | DLGCB_EXPIRED | DLGCB_DESTROY, __dialog_ended, (void*)CCActive, NULL) != 0) {
LM_ERR("cannot register callback for dialog termination\n");
call_control_stop(msg, dlg->callid);
return -5;
}
}
return result;
}
/*
* Do loose routing as defined in RFC3621
*/
int loose_route(struct sip_msg* _m, char* _s1, char* _s2)
{
struct hdr_field* hdr;
struct sip_uri puri;
rr_t* rt;
int ret;
str* uri;
if (find_first_route(_m) != 0) {
DBG("loose_route: There is no Route HF\n");
return -1;
}
if (parse_sip_msg_uri(_m) == -1) {
LOG(L_ERR, "loose_route: Error while parsing Request URI\n");
return -1;
}
hdr = _m->route;
rt = (rr_t*)hdr->parsed;
uri = &rt->nameaddr.uri;
if (parse_uri(uri->s, uri->len, &puri) < 0) {
LOG(L_ERR, "loose_route: Error while parsing the first route URI\n");
return -1;
}
if (is_myself(&_m->parsed_uri.host, _m->parsed_uri.port_no)||
_m->parsed_uri.type == TEL_URI_T ||
_m->parsed_uri.type == TELS_URI_T) {
DBG("loose_route: RURI is myself (or tel URI)\n");
if ((ret = is_myself(&puri.host, puri.port_no)) == 1 &&
!(enable_double_rr && is_2rr(&puri.params))) {
DBG("loose_route: found preloaded loose route\n");
return after_loose(_m, &puri, ret, 1);
} else {
if (has_to_tag(_m) == 1) {
return after_strict(_m, &puri, ret);
} else {
LOG(L_WARN, "loose_route: pre-loaded strict routing?!\n");
return -1;
}
}
} else {
DBG("loose_route: RURI is NOT myself\n");
if (is_myself(&puri.host, puri.port_no)) {
return after_loose(_m, &puri, 1, 0);
} else {
store_next_route_in_avps(uri);
//LOG(L_WARN, "loose_route: no routing target is local\n");
//return -1;
return after_loose(_m, &puri, 0, 0);
}
}
}
// Return codes:
// 2 - No limit
// 1 - Limited
// -1 - No credit
// -2 - Locked
// -3 - No provider
// -5 - Internal error (message parsing, communication, ...)
static int
CallControl(struct sip_msg *msg, char *str1, char *str2)
{
int result;
if (disable)
return 2;
if (msg->first_line.type!=SIP_REQUEST || msg->REQ_METHOD!=METHOD_INVITE || has_to_tag(msg)) {
LOG(L_WARN, "call_control should only be called for the first INVITE\n");
return -5;
}
result = call_control_initialize(msg);
if (result == 1) {
// A call with a time limit that will be traced by callcontrol
msg->msg_flags |= FL_USE_CALL_CONTROL;
setflag(msg, dialog_flag); // have the dialog module trace this dialog
}
return result;
}
