int sipevent_substate_decode(struct sipevent_substate *ss, const struct pl *pl)
{
struct pl state, param;
int err;
if (!ss || !pl)
return EINVAL;
err = re_regex(pl->p, pl->l, "[a-z]+[ \t\r\n]*[^]*",
&state, NULL, &ss->params);
if (err)
return EBADMSG;
if (!pl_strcasecmp(&state, "active"))
ss->state = SIPEVENT_ACTIVE;
else if (!pl_strcasecmp(&state, "pending"))
ss->state = SIPEVENT_PENDING;
else if (!pl_strcasecmp(&state, "terminated"))
ss->state = SIPEVENT_TERMINATED;
else
ss->state = -1;
if (!sip_param_decode(&ss->params, "reason", ¶m)) {
if (!pl_strcasecmp(¶m, "deactivated"))
ss->reason = SIPEVENT_DEACTIVATED;
else if (!pl_strcasecmp(¶m, "probation"))
ss->reason = SIPEVENT_PROBATION;
else if (!pl_strcasecmp(¶m, "rejected"))
ss->reason = SIPEVENT_REJECTED;
else if (!pl_strcasecmp(¶m, "timeout"))
ss->reason = SIPEVENT_TIMEOUT;
else if (!pl_strcasecmp(¶m, "giveup"))
ss->reason = SIPEVENT_GIVEUP;
else if (!pl_strcasecmp(¶m, "noresource"))
ss->reason = SIPEVENT_NORESOURCE;
else
ss->reason = -1;
}
else {
ss->reason = -1;
}
if (!sip_param_decode(&ss->params, "expires", ¶m))
ss->expires = param;
else
ss->expires = pl_null;
if (!sip_param_decode(&ss->params, "retry-after", ¶m))
ss->retry_after = param;
else
ss->retry_after = pl_null;
return 0;
}
static bool contact_handler(const struct sip_hdr *hdr,
const struct sip_msg *msg, void *arg)
{
struct sipreg *reg = arg;
struct sip_addr c;
struct pl pval;
char uri[256];
if (sip_addr_decode(&c, &hdr->val))
return false;
if (re_snprintf(uri, sizeof(uri), "sip:%s@%J%s", reg->cuser,
®->laddr, sip_transp_param(reg->tp)) < 0)
return false;
if (pl_strcmp(&c.auri, uri))
return false;
if (!sip_param_decode(&c.params, "expires", &pval)) {
reg->wait = pl_u32(&pval);
}
else if (pl_isset(&msg->expires))
reg->wait = pl_u32(&msg->expires);
else
reg->wait = DEFAULT_EXPIRES;
return true;
}
int sipevent_event_decode(struct sipevent_event *se, const struct pl *pl)
{
struct pl param;
int err;
if (!se || !pl)
return EINVAL;
err = re_regex(pl->p, pl->l, "[^; \t\r\n]+[ \t\r\n]*[^]*",
&se->event, NULL, &se->params);
if (err)
return EBADMSG;
if (!sip_param_decode(&se->params, "id", ¶m))
se->id = param;
else
se->id = pl_null;
return 0;
}
int sip_via_decode(struct sip_via *via, const struct pl *pl)
{
struct pl transp, host, port;
int err;
if (!via || !pl)
return EINVAL;
err = re_regex(pl->p, pl->l,
"SIP[ \t\r\n]*/[ \t\r\n]*2.0[ \t\r\n]*/[ \t\r\n]*"
"[A-Z]+[ \t\r\n]*[^; \t\r\n]+[ \t\r\b]*[^]*",
NULL, NULL, NULL, NULL, &transp,
NULL, &via->sentby, NULL, &via->params);
if (err)
return err;
if (!pl_strcmp(&transp, "TCP"))
via->tp = SIP_TRANSP_TCP;
else if (!pl_strcmp(&transp, "TLS"))
via->tp = SIP_TRANSP_TLS;
else if (!pl_strcmp(&transp, "UDP"))
via->tp = SIP_TRANSP_UDP;
else
via->tp = SIP_TRANSP_NONE;
err = decode_hostport(&via->sentby, &host, &port);
if (err)
return err;
sa_init(&via->addr, AF_INET);
(void)sa_set(&via->addr, &host, 0);
if (pl_isset(&port))
sa_set_port(&via->addr, pl_u32(&port));
via->val = *pl;
return sip_param_decode(&via->params, "branch", &via->branch);
}
int subscriber_init(void)
{
struct le *le;
int err = 0;
for (le = list_head(contact_list()); le; le = le->next) {
struct contact *c = le->data;
struct sip_addr *addr = contact_addr(c);
struct pl val;
if (0 == sip_param_decode(&addr->params, "presence", &val) &&
0 == pl_strcasecmp(&val, "p2p")) {
err |= presence_alloc(le->data);
}
}
info("Subscribing to %u contacts\n", list_count(&presencel));
return err;
}
/**
* Send a SIP request
*
* @param reqp Pointer to allocated SIP request object
* @param sip SIP Stack
* @param stateful Stateful client transaction
* @param met SIP Method string
* @param metl Length of SIP Method string
* @param uri Request URI
* @param uril Length of Request URI string
* @param route Next hop route URI
* @param mb Buffer containing SIP request
* @param sendh Send handler
* @param resph Response handler
* @param arg Handler argument
*
* @return 0 if success, otherwise errorcode
*/
int sip_request(struct sip_request **reqp, struct sip *sip, bool stateful,
const char *met, int metl, const char *uri, int uril,
const struct uri *route, struct mbuf *mb,
sip_send_h *sendh, sip_resp_h *resph, void *arg)
{
struct sip_request *req;
struct sa dst;
struct pl pl;
int err;
if (!sip || !met || !uri || !route || !mb)
return EINVAL;
if (pl_strcasecmp(&route->scheme, "sip"))
return ENOSYS;
req = mem_zalloc(sizeof(*req), destructor);
if (!req)
return ENOMEM;
list_append(&sip->reql, &req->le, req);
err = str_ldup(&req->met, met, metl);
if (err)
goto out;
err = str_ldup(&req->uri, uri, uril);
if (err)
goto out;
if (sip_param_decode(&route->params, "maddr", &pl))
pl = route->host;
err = pl_strdup(&req->host, &pl);
if (err)
goto out;
req->stateful = stateful;
req->mb = mem_ref(mb);
req->sip = sip;
req->sendh = sendh;
req->resph = resph;
req->arg = arg;
if (!sip_param_decode(&route->params, "transport", &pl)) {
if (!pl_strcasecmp(&pl, "udp"))
req->tp = SIP_TRANSP_UDP;
else if (!pl_strcasecmp(&pl, "tcp"))
req->tp = SIP_TRANSP_TCP;
else if (!pl_strcasecmp(&pl, "tls"))
req->tp = SIP_TRANSP_TLS;
else {
err = EPROTONOSUPPORT;
goto out;
}
if (!sip_transp_supported(sip, req->tp, AF_UNSPEC)) {
err = EPROTONOSUPPORT;
goto out;
}
req->tp_selected = true;
}
else {
req->tp = SIP_TRANSP_NONE;
if (!transp_next(sip, &req->tp)) {
err = EPROTONOSUPPORT;
goto out;
}
req->tp_selected = false;
}
if (!sa_set_str(&dst, req->host,
sip_transp_port(req->tp, route->port))) {
err = request(req, req->tp, &dst);
if (!req->stateful) {
mem_deref(req);
return err;
}
}
else if (route->port) {
req->port = sip_transp_port(req->tp, route->port);
err = addr_lookup(req, req->host);
}
else if (req->tp_selected) {
err = srv_lookup(req, req->host);
}
else {
err = dnsc_query(&req->dnsq, sip->dnsc, req->host,
DNS_TYPE_NAPTR, DNS_CLASS_IN, true,
naptr_handler, req);
}
out:
if (err)
mem_deref(req);
else if (reqp) {
req->reqp = reqp;
*reqp = req;
}
return err;
}
