static int send_handler(enum sip_transp tp, const struct sa *src,
const struct sa *dst, struct mbuf *mb, void *arg)
{
struct sipreg *reg = arg;
int err;
(void)dst;
if (reg->expires > 0) {
reg->laddr = *src;
reg->tp = tp;
}
err = mbuf_printf(mb, "Contact: <sip:%s@%J%s>;expires=%u%s%s",
reg->cuser, ®->laddr, sip_transp_param(reg->tp),
reg->expires,
reg->params ? ";" : "",
reg->params ? reg->params : "");
if (reg->regid > 0)
err |= mbuf_printf(mb, ";reg-id=%d", reg->regid);
err |= mbuf_printf(mb, "\r\n");
return err;
}
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;
}
/**
* Send progress response
*
* @param sess SIP Session
* @param scode Response status code
* @param reason Response reason phrase
* @param desc Content description (e.g. SDP)
* @param fmt Formatted strings with extra SIP Headers
*
* @return 0 if success, otherwise errorcode
*/
int sipsess_progress(struct sipsess *sess, uint16_t scode, const char *reason,
struct mbuf *desc, const char *fmt, ...)
{
va_list ap;
int err;
if (!sess || !sess->st || !sess->msg || scode < 101 || scode > 199)
return EINVAL;
va_start(ap, fmt);
err = sip_treplyf(&sess->st, NULL, sess->sip, sess->msg, true,
scode, reason,
"Contact: <sip:%s@%J%s>\r\n"
"%v"
"%s%s%s"
"Content-Length: %zu\r\n"
"\r\n"
"%b",
sess->cuser, &sess->msg->dst,
sip_transp_param(sess->msg->tp),
fmt, &ap,
desc ? "Content-Type: " : "",
desc ? sess->ctype : "",
desc ? "\r\n" : "",
desc ? mbuf_get_left(desc) : (size_t)0,
desc ? mbuf_buf(desc) : NULL,
desc ? mbuf_get_left(desc) : (size_t)0);
va_end(ap);
return err;
}
/**
* Accept an incoming SIP Session connection
*
* @param sessp Pointer to allocated SIP Session
* @param sock SIP Session socket
* @param msg Incoming SIP message
* @param scode Response status code
* @param reason Response reason phrase
* @param cuser Contact username
* @param ctype Session content-type
* @param desc Content description (e.g. SDP)
* @param authh SIP Authentication handler
* @param aarg Authentication handler argument
* @param aref True to mem_ref() aarg
* @param offerh Session offer handler
* @param answerh Session answer handler
* @param estabh Session established handler
* @param infoh Session info handler
* @param referh Session refer handler
* @param closeh Session close handler
* @param arg Handler argument
* @param fmt Formatted strings with extra SIP Headers
*
* @return 0 if success, otherwise errorcode
*/
int sipsess_accept(struct sipsess **sessp, struct sipsess_sock *sock,
const struct sip_msg *msg, uint16_t scode,
const char *reason, const char *cuser, const char *ctype,
struct mbuf *desc,
sip_auth_h *authh, void *aarg, bool aref,
sipsess_offer_h *offerh, sipsess_answer_h *answerh,
sipsess_estab_h *estabh, sipsess_info_h *infoh,
sipsess_refer_h *referh, sipsess_close_h *closeh,
void *arg, const char *fmt, ...)
{
struct sipsess *sess;
va_list ap;
int err;
if (!sessp || !sock || !msg || scode < 101 || scode > 299 ||
!cuser || !ctype)
return EINVAL;
err = sipsess_alloc(&sess, sock, cuser, ctype, NULL, authh, aarg, aref,
offerh, answerh, NULL, estabh, infoh, referh,
closeh, arg);
if (err)
return err;
err = sip_dialog_accept(&sess->dlg, msg);
if (err)
goto out;
hash_append(sock->ht_sess,
hash_joaat_str(sip_dialog_callid(sess->dlg)),
&sess->he, sess);
sess->msg = mem_ref((void *)msg);
err = sip_strans_alloc(&sess->st, sess->sip, msg, cancel_handler,
sess);
if (err)
goto out;
va_start(ap, fmt);
if (scode >= 200)
err = sipsess_reply_2xx(sess, msg, scode, reason, desc,
fmt, &ap);
else
err = sip_treplyf(&sess->st, NULL, sess->sip,
msg, true, scode, reason,
"Contact: <sip:%s@%J%s>\r\n"
"%v"
"%s%s%s"
"Content-Length: %zu\r\n"
"\r\n"
"%b",
sess->cuser, &msg->dst,
sip_transp_param(msg->tp),
fmt, &ap,
desc ? "Content-Type: " : "",
desc ? sess->ctype : "",
desc ? "\r\n" : "",
desc ? mbuf_get_left(desc) : (size_t)0,
desc ? mbuf_buf(desc) : NULL,
desc ? mbuf_get_left(desc) : (size_t)0);
va_end(ap);
if (err)
goto out;
out:
if (err)
mem_deref(sess);
else
*sessp = sess;
return err;
}
