const char *call_delete_ng(bencode_item_t *input, struct callmaster *m, bencode_item_t *output) {
str fromtag, totag, viabranch, callid;
bencode_item_t *flags, *it;
int fatal = 0;
if (!bencode_dictionary_get_str(input, "call-id", &callid))
return "No call-id in message";
if (!bencode_dictionary_get_str(input, "from-tag", &fromtag))
return "No from-tag in message";
bencode_dictionary_get_str(input, "to-tag", &totag);
bencode_dictionary_get_str(input, "via-branch", &viabranch);
flags = bencode_dictionary_get_expect(input, "flags", BENCODE_LIST);
if (flags) {
for (it = flags->child; it; it = it->sibling) {
if (!bencode_strcmp(it, "fatal"))
fatal = 1;
}
}
if (call_delete_branch(m, &callid, &viabranch, &fromtag, &totag, output)) {
if (fatal)
return "Call-ID not found or tags didn't match";
bencode_dictionary_add_string(output, "warning", "Call-ID not found or tags didn't match");
}
bencode_dictionary_add_string(output, "result", "ok");
return NULL;
}
static void ng_stats_endpoint(bencode_item_t *dict, const struct endpoint *ep) {
char buf[64];
if (IN6_IS_ADDR_V4MAPPED(&ep->ip46)) {
bencode_dictionary_add_string(dict, "family", "IPv4");
inet_ntop(AF_INET, &(ep->ip46.s6_addr32[3]), buf, sizeof(buf));
}
else {
bencode_dictionary_add_string(dict, "family", "IPv6");
inet_ntop(AF_INET6, &ep->ip46, buf, sizeof(buf));
}
bencode_dictionary_add_string_dup(dict, "address", buf);
bencode_dictionary_add_integer(dict, "port", ep->port);
}
static void ng_stats_media(bencode_item_t *list, const struct call_media *m,
struct call_stats *totals)
{
bencode_item_t *dict, *streams = NULL, *flags;
GList *l;
struct packet_stream *ps;
if (!list)
goto stats;
dict = bencode_list_add_dictionary(list);
bencode_dictionary_add_integer(dict, "index", m->index);
bencode_dictionary_add_str(dict, "type", &m->type);
if (m->protocol)
bencode_dictionary_add_string(dict, "protocol", m->protocol->name);
streams = bencode_dictionary_add_list(dict, "streams");
flags = bencode_dictionary_add_list(dict, "flags");
BF_M("initialized", INITIALIZED);
BF_M("rtcp-mux", RTCP_MUX);
BF_M("DTLS-SRTP", DTLS);
BF_M("SDES", SDES);
BF_M("passthrough", PASSTHRU);
BF_M("ICE", ICE);
stats:
for (l = m->streams.head; l; l = l->next) {
ps = l->data;
ng_stats_stream(streams, ps, totals);
}
}
const char *call_list_ng(bencode_item_t *input, struct callmaster *m, bencode_item_t *output) {
bencode_item_t *calls = NULL;
long long int limit;
limit = bencode_dictionary_get_integer(input, "limit", 32);
if (limit < 0) {
return "invalid limit, must be >= 0";
}
bencode_dictionary_add_string(output, "result", "ok");
calls = bencode_dictionary_add_list(output, "calls");
ng_list_calls(m, calls, limit);
return NULL;
}
static void ng_stats_stream(bencode_item_t *list, const struct packet_stream *ps,
struct call_stats *totals)
{
bencode_item_t *dict = NULL, *flags;
struct stats *s;
if (!list)
goto stats;
dict = bencode_list_add_dictionary(list);
if (ps->sfd)
bencode_dictionary_add_integer(dict, "local port", ps->sfd->fd.localport);
ng_stats_endpoint(bencode_dictionary_add_dictionary(dict, "endpoint"), &ps->endpoint);
ng_stats_endpoint(bencode_dictionary_add_dictionary(dict, "advertised endpoint"),
&ps->advertised_endpoint);
if (ps->crypto.params.crypto_suite)
bencode_dictionary_add_string(dict, "crypto suite",
ps->crypto.params.crypto_suite->name);
bencode_dictionary_add_integer(dict, "last packet", ps->last_packet);
flags = bencode_dictionary_add_list(dict, "flags");
BF_PS("RTP", RTP);
BF_PS("RTCP", RTCP);
BF_PS("fallback RTCP", FALLBACK_RTCP);
BF_PS("filled", FILLED);
BF_PS("confirmed", CONFIRMED);
BF_PS("kernelized", KERNELIZED);
BF_PS("no kernel support", NO_KERNEL_SUPPORT);
BF_PS("DTLS fingerprint verified", FINGERPRINT_VERIFIED);
BF_PS("strict source address", STRICT_SOURCE);
BF_PS("media handover", MEDIA_HANDOVER);
stats:
if (totals->last_packet < ps->last_packet)
totals->last_packet = ps->last_packet;
/* XXX distinguish between input and output */
s = &totals->totals[0];
if (!PS_ISSET(ps, RTP))
s = &totals->totals[1];
ng_stats(bencode_dictionary_add_dictionary(dict, "stats"), &ps->stats, s);
}
const char *call_query_ng(bencode_item_t *input, struct callmaster *m, bencode_item_t *output) {
str callid, fromtag, totag;
struct call *call;
if (!bencode_dictionary_get_str(input, "call-id", &callid))
return "No call-id in message";
call = call_get_opmode(&callid, m, OP_OTHER);
if (!call)
return "Unknown call-id";
bencode_dictionary_get_str(input, "from-tag", &fromtag);
bencode_dictionary_get_str(input, "to-tag", &totag);
bencode_dictionary_add_string(output, "result", "ok");
ng_call_stats(call, &fromtag, &totag, output, NULL);
rwlock_unlock_w(&call->master_lock);
obj_put(call);
return NULL;
}
static const char *call_offer_answer_ng(bencode_item_t *input, struct callmaster *m,
bencode_item_t *output, enum call_opmode opmode)
{
str sdp, fromtag, totag = STR_NULL, callid;
char *errstr;
GQueue parsed = G_QUEUE_INIT;
GQueue streams = G_QUEUE_INIT;
struct call *call;
struct call_monologue *monologue;
int ret;
struct sdp_ng_flags flags;
struct sdp_chopper *chopper;
if (!bencode_dictionary_get_str(input, "sdp", &sdp))
return "No SDP body in message";
if (!bencode_dictionary_get_str(input, "call-id", &callid))
return "No call-id in message";
if (!bencode_dictionary_get_str(input, "from-tag", &fromtag))
return "No from-tag in message";
if (opmode == OP_ANSWER) {
if (!bencode_dictionary_get_str(input, "to-tag", &totag))
return "No to-tag in message";
}
//bencode_dictionary_get_str(input, "via-branch", &viabranch);
if (sdp_parse(&sdp, &parsed))
return "Failed to parse SDP";
call_ng_process_flags(&flags, input);
flags.opmode = opmode;
errstr = "Incomplete SDP specification";
if (sdp_streams(&parsed, &streams, &flags))
goto out;
call = call_get_opmode(&callid, m, opmode);
errstr = "Unknown call-id";
if (!call)
goto out;
/* At least the random ICE strings are contained within the call struct, so we
* need to hold a ref until we're done sending the reply */
call_bencode_hold_ref(call, output);
monologue = call_get_mono_dialogue(call, &fromtag, &totag);
errstr = "Invalid dialogue association";
if (!monologue) {
rwlock_unlock_w(&call->master_lock);
obj_put(call);
goto out;
}
chopper = sdp_chopper_new(&sdp);
bencode_buffer_destroy_add(output->buffer, (free_func_t) sdp_chopper_destroy, chopper);
ret = monologue_offer_answer(monologue, &streams, &flags);
if (!ret)
ret = sdp_replace(chopper, &parsed, monologue->active_dialogue, &flags);
rwlock_unlock_w(&call->master_lock);
redis_update(call, m->conf.redis);
obj_put(call);
errstr = "Error rewriting SDP";
if (ret)
goto out;
bencode_dictionary_add_iovec(output, "sdp", &g_array_index(chopper->iov, struct iovec, 0),
chopper->iov_num, chopper->str_len);
bencode_dictionary_add_string(output, "result", "ok");
errstr = NULL;
out:
sdp_free(&parsed);
streams_free(&streams);
return errstr;
}
static void control_ng_incoming(struct obj *obj, str *buf, const endpoint_t *sin, char *addr,
struct udp_listener *ul)
{
struct control_ng *c = (void *) obj;
bencode_buffer_t bencbuf;
bencode_item_t *dict, *resp;
str cmd, cookie, data, reply, *to_send, callid;
const char *errstr;
struct iovec iov[3];
unsigned int iovlen;
GString *log_str;
struct control_ng_stats* cur = get_control_ng_stats(c,&sin->address);
str_chr_str(&data, buf, ' ');
if (!data.s || data.s == buf->s) {
ilog(LOG_WARNING, "Received invalid data on NG port (no cookie) from %s: "STR_FORMAT, addr, STR_FMT(buf));
return;
}
bencode_buffer_init(&bencbuf);
resp = bencode_dictionary(&bencbuf);
cookie = *buf;
cookie.len -= data.len;
*data.s++ = '\0';
data.len--;
errstr = "Invalid data (no payload)";
if (data.len <= 0)
goto err_send;
to_send = cookie_cache_lookup(&c->cookie_cache, &cookie);
if (to_send) {
ilog(LOG_INFO, "Detected command from %s as a duplicate", addr);
resp = NULL;
goto send_only;
}
dict = bencode_decode_expect_str(&bencbuf, &data, BENCODE_DICTIONARY);
errstr = "Could not decode dictionary";
if (!dict)
goto err_send;
bencode_dictionary_get_str(dict, "command", &cmd);
errstr = "Dictionary contains no key \"command\"";
if (!cmd.s)
goto err_send;
bencode_dictionary_get_str(dict, "call-id", &callid);
log_info_str(&callid);
ilog(LOG_INFO, "Received command '"STR_FORMAT"' from %s", STR_FMT(&cmd), addr);
if (get_log_level() >= LOG_DEBUG) {
log_str = g_string_sized_new(256);
g_string_append_printf(log_str, "Dump for '"STR_FORMAT"' from %s: ", STR_FMT(&cmd), addr);
pretty_print(dict, log_str);
ilog(LOG_DEBUG, "%.*s", (int) log_str->len, log_str->str);
g_string_free(log_str, TRUE);
}
errstr = NULL;
if (!str_cmp(&cmd, "ping")) {
bencode_dictionary_add_string(resp, "result", "pong");
g_atomic_int_inc(&cur->ping);
}
else if (!str_cmp(&cmd, "offer")) {
errstr = call_offer_ng(dict, c->callmaster, resp, addr, sin);
g_atomic_int_inc(&cur->offer);
}
else if (!str_cmp(&cmd, "answer")) {
errstr = call_answer_ng(dict, c->callmaster, resp);
g_atomic_int_inc(&cur->answer);
}
else if (!str_cmp(&cmd, "delete")) {
errstr = call_delete_ng(dict, c->callmaster, resp);
g_atomic_int_inc(&cur->delete);
}