// call->master_lock held in W
struct media_player *media_player_new(struct call_monologue *ml) {
#ifdef WITH_TRANSCODING
ilog(LOG_DEBUG, "creating media_player");
uint32_t ssrc = 0;
while (ssrc == 0)
ssrc = random();
struct ssrc_ctx *ssrc_ctx = get_ssrc_ctx(ssrc, ml->call->ssrc_hash, SSRC_DIR_OUTPUT);
struct media_player *mp = obj_alloc0("media_player", sizeof(*mp), __media_player_free);
mp->tt_obj.tt = &media_player_thread;
mutex_init(&mp->lock);
mp->call = obj_get(ml->call);
mp->ml = ml;
mp->seq = random();
mp->ssrc_out = ssrc_ctx;
av_init_packet(&mp->pkt);
mp->pkt.data = NULL;
mp->pkt.size = 0;
return mp;
#else
return NULL;
#endif
}
/* unlocks on return */
static int __poller_add_item(struct poller *p, struct poller_item *i, int has_lock) {
struct poller_item_int *ip;
unsigned int u;
struct epoll_event e;
if (!p || !i)
goto fail_lock;
if (i->fd < 0)
goto fail_lock;
if (!i->readable && !i->writeable)
goto fail_lock;
if (!i->closed)
goto fail_lock;
if (!has_lock)
mutex_lock(&p->lock);
if (i->fd < p->items_size && p->items[i->fd])
goto fail;
ZERO(e);
e.events = epoll_events(i, NULL);
e.data.fd = i->fd;
if (epoll_ctl(p->fd, EPOLL_CTL_ADD, i->fd, &e))
abort();
if (i->fd >= p->items_size) {
u = p->items_size;
p->items_size = i->fd + 1;
p->items = realloc(p->items, sizeof(*p->items) * p->items_size);
memset(p->items + u, 0, sizeof(*p->items) * (p->items_size - u - 1));
}
ip = obj_alloc0("poller_item_int", sizeof(*ip), poller_item_free);
memcpy(&ip->item, i, sizeof(*i));
obj_hold_o(ip->item.obj); /* new ref in *ip */
p->items[i->fd] = obj_get(ip);
mutex_unlock(&p->lock);
if (i->timer)
poller_add_timer(p, poller_fd_timer, &ip->obj);
obj_put(ip);
return 0;
fail:
mutex_unlock(&p->lock);
return -1;
fail_lock:
if (has_lock)
mutex_unlock(&p->lock);
return -1;
}
// call->master_lock held in W
struct send_timer *send_timer_new(struct packet_stream *ps) {
ilog(LOG_DEBUG, "creating send_timer");
struct send_timer *st = obj_alloc0("send_timer", sizeof(*st), __send_timer_free);
st->tt_obj.tt = &send_timer_thread;
mutex_init(&st->lock);
st->call = obj_get(ps->call);
st->sink = ps;
g_queue_init(&st->packets);
return st;
}
static void control_incoming(int fd, void *p, uintptr_t u) {
int nfd;
struct control_tcp *c = p;
struct control_stream *s;
struct poller_item i;
struct sockaddr_in sin;
socklen_t sinl;
next:
sinl = sizeof(sin);
nfd = accept(fd, (struct sockaddr *) &sin, &sinl);
if (nfd == -1) {
if (errno == EAGAIN || errno == EWOULDBLOCK)
return;
goto next;
}
nonblock(nfd);
ilog(LOG_INFO, "New control connection from " DF, DP(sin));
s = obj_alloc0("control_stream", sizeof(*s), control_stream_free);
s->fd = nfd;
s->control = c;
s->poller = c->poller;
s->inbuf = streambuf_new(c->poller, nfd);
s->outbuf = streambuf_new(c->poller, nfd);
memcpy(&s->inaddr, &sin, sizeof(s->inaddr));
mutex_init(&s->lock);
s->linked = 1;
ZERO(i);
i.fd = nfd;
i.closed = control_stream_closed;
i.readable = control_stream_readable;
i.writeable = control_stream_writeable;
i.timer = control_stream_timer;
i.obj = &s->obj;
if (poller_add_item(c->poller, &i))
goto fail;
mutex_lock(&c->lock);
/* let the list steal our own ref */
c->streams = g_list_prepend(c->streams, s);
mutex_unlock(&c->lock);
goto next;
fail:
obj_put(s);
goto next;
}
static struct ice_agent *__ice_agent_new(struct call_media *media) {
struct ice_agent *ag;
struct call *call = media->call;
ag = obj_alloc0("ice_agent", sizeof(*ag), __ice_agent_free);
ag->call = obj_get(call);
ag->media = media;
mutex_init(&ag->lock);
__ice_agent_initialize(ag);
return ag;
}
struct control_udp *control_udp_new(struct poller *p, endpoint_t *ep, struct callmaster *m) {
struct control_udp *c;
const char *errptr;
int erroff;
if (!p || !m)
return NULL;
c = obj_alloc0("control_udp", sizeof(*c), NULL);
c->callmaster = m;
c->parse_re = pcre_compile(
/* cookie cmd flags callid viabranch:5 */
"^(\\S+)\\s+(?:([ul])(\\S*)\\s+([^;]+)(?:;(\\S+))?\\s+" \
/* addr4 addr6:7 */
"(?:([\\d.]+)|([\\da-f:]+(?::ffff:[\\d.]+)?))" \
/* port fromtag num totag:11 */
"\\s+(\\d+)\\s+(\\S+?);(\\d+)(?:\\s+(\\S+?);\\d+(?:\\s+.*)?)?\r?\n?$" \
/* "d/q" flags callid viabranch fromtag totag:17 */
"|([dq])(\\S*)\\s+([^;\\s]+)(?:;(\\S+))?\\s+(\\S+?)(?:;\\d+)?(?:\\s+(\\S+?)(?:;\\d+)?)?\r?\n?$" \
/* v flags params:20 */
"|(v)(\\S*)(?:\\s+(\\S+))?)",
PCRE_DOLLAR_ENDONLY | PCRE_DOTALL | PCRE_CASELESS, &errptr, &erroff, NULL);
c->parse_ree = pcre_study(c->parse_re, 0, &errptr);
/* cookie cmd flags callid addr port */
c->fallback_re = pcre_compile("^(\\S+)(?:\\s+(\\S)\\S*\\s+\\S+(\\s+\\S+)(\\s+\\S+))?", PCRE_DOLLAR_ENDONLY | PCRE_DOTALL | PCRE_CASELESS, &errptr, &erroff, NULL);
if (!c->parse_re || !c->fallback_re)
goto fail2;
cookie_cache_init(&c->cookie_cache);
if (udp_listener_init(&c->udp_listeners[0], p, ep, control_udp_incoming, &c->obj))
goto fail2;
if (ipv46_any_convert(ep) && udp_listener_init(&c->udp_listeners[1], p, ep, control_udp_incoming, &c->obj))
goto fail2;
return c;
fail2:
obj_put(c);
return NULL;
}
static int poller_timer_link(struct poller *p, GSList **lp, void (*f)(void *), struct obj *o) {
struct timer_item *i;
if (!f)
return -1;
i = obj_alloc0("timer_item", sizeof(*i), timer_item_free);
i->func = f;
i->obj_ptr = o ? obj_hold_o(o) : NULL;
mutex_lock(&p->timers_add_del_lock);
*lp = g_slist_prepend(*lp, i);
if (!mutex_trylock(&p->timers_lock)) {
poller_timers_mod(p);
mutex_unlock(&p->timers_lock);
}
mutex_unlock(&p->timers_add_del_lock);
return 0;
}
static int cert_init() {
X509 *x509 = NULL;
EVP_PKEY *pkey = NULL;
BIGNUM *exponent = NULL, *serial_number = NULL;
RSA *rsa = NULL;
ASN1_INTEGER *asn1_serial_number;
X509_NAME *name;
struct dtls_cert *new_cert;
ilog(LOG_INFO, "Generating new DTLS certificate");
/* objects */
pkey = EVP_PKEY_new();
exponent = BN_new();
rsa = RSA_new();
serial_number = BN_new();
name = X509_NAME_new();
x509 = X509_new();
if (!exponent || !pkey || !rsa || !serial_number || !name || !x509)
goto err;
/* key */
if (!BN_set_word(exponent, 0x10001))
goto err;
if (!RSA_generate_key_ex(rsa, 1024, exponent, NULL))
goto err;
if (!EVP_PKEY_assign_RSA(pkey, rsa))
goto err;
/* x509 cert */
if (!X509_set_pubkey(x509, pkey))
goto err;
/* serial */
if (!BN_pseudo_rand(serial_number, 64, 0, 0))
goto err;
asn1_serial_number = X509_get_serialNumber(x509);
if (!asn1_serial_number)
goto err;
if (!BN_to_ASN1_INTEGER(serial_number, asn1_serial_number))
goto err;
/* version 1 */
if (!X509_set_version(x509, 0L))
goto err;
/* common name */
if (!X509_NAME_add_entry_by_NID(name, NID_commonName, MBSTRING_UTF8,
(unsigned char *) "rtpengine", -1, -1, 0))
goto err;
if (!X509_set_subject_name(x509, name))
goto err;
if (!X509_set_issuer_name(x509, name))
goto err;
/* cert lifetime */
if (!X509_gmtime_adj(X509_get_notBefore(x509), -60*60*24))
goto err;
if (!X509_gmtime_adj(X509_get_notAfter(x509), CERT_EXPIRY_TIME))
goto err;
/* sign it */
if (!X509_sign(x509, pkey, EVP_sha1()))
goto err;
/* digest */
new_cert = obj_alloc0("dtls_cert", sizeof(*new_cert), cert_free);
new_cert->fingerprint.hash_func = &hash_funcs[0];
dtls_fingerprint_hash(&new_cert->fingerprint, x509);
new_cert->x509 = x509;
new_cert->pkey = pkey;
new_cert->expires = time(NULL) + CERT_EXPIRY_TIME;
dump_cert(new_cert);
/* swap out certs */
rwlock_lock_w(&__dtls_cert_lock);
if (__dtls_cert)
obj_put(__dtls_cert);
__dtls_cert = new_cert;
rwlock_unlock_w(&__dtls_cert_lock);
/* cleanup */
BN_free(exponent);
BN_free(serial_number);
X509_NAME_free(name);
return 0;
err:
ilog(LOG_ERROR, "Failed to generate DTLS certificate");
if (pkey)
EVP_PKEY_free(pkey);
if (exponent)
BN_free(exponent);
if (rsa)
RSA_free(rsa);
if (x509)
X509_free(x509);
if (serial_number)
BN_free(serial_number);
return -1;
}
struct control_tcp *control_tcp_new(struct poller *p, u_int32_t ip, u_int16_t port, struct callmaster *m) {
int fd;
struct control_tcp *c;
struct poller_item i;
struct sockaddr_in sin;
const char *errptr;
int erroff;
if (!p)
return NULL;
if (!m)
return NULL;
fd = socket(AF_INET, SOCK_STREAM, 0);
if (fd == -1)
return NULL;
nonblock(fd);
reuseaddr(fd);
ZERO(sin);
sin.sin_family = AF_INET;
sin.sin_addr.s_addr = ip;
sin.sin_port = htons(port);
if (bind(fd, (struct sockaddr *) &sin, sizeof(sin)))
goto fail;
if (listen(fd, 5))
goto fail;
c = obj_alloc0("control", sizeof(*c), NULL);
c->parse_re = pcre_compile(
/* reqtype callid streams ip fromdom fromtype todom totype agent info |reqtype callid info | reqtype */
"^(?:(request|lookup)\\s+(\\S+)\\s+(\\S+)\\s+(\\S+)\\s+(\\S+)\\s+(\\S+)\\s+(\\S+)\\s+(\\S+)\\s+(\\S+)\\s+info=(\\S*)|(delete)\\s+(\\S+)\\s+info=(\\S*)|(build|version|controls|quit|exit|status))$",
PCRE_DOLLAR_ENDONLY | PCRE_DOTALL, &errptr, &erroff, NULL);
c->parse_ree = pcre_study(c->parse_re, 0, &errptr);
c->fd = fd;
c->poller = p;
c->callmaster = m;
mutex_init(&c->lock);
ZERO(i);
i.fd = fd;
i.closed = control_closed;
i.readable = control_incoming;
i.obj = &c->obj;
if (poller_add_item(p, &i))
goto fail2;
obj_put(c);
return c;
fail2:
obj_put(c);
fail:
close(fd);
return NULL;
}
