static int oreka_write_udp(oreka_session_t *oreka, switch_stream_handle_t *udp)
{
switch_size_t udplen = udp->data_len;
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(oreka->session), SWITCH_LOG_DEBUG, "Oreka SIP Packet:\n%s", (const char *)udp->data);
switch_socket_sendto(globals.sip_socket, globals.sip_server_addr, 0, (void *)udp->data, &udplen);
if (udplen != udp->data_len) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(oreka->session), SWITCH_LOG_ERROR, "Failed to write SIP Packet of len %zd (wrote=%zd)",
udp->data_len, udplen);
}
return 0;
}
static void event_handler(switch_event_t *event)
{
uint8_t send = 0;
if (globals.running != 1) {
return;
}
if (event->subclass_name && (!strcmp(event->subclass_name, MULTICAST_EVENT) ||
!strcmp(event->subclass_name, MULTICAST_PEERUP) || !strcmp(event->subclass_name, MULTICAST_PEERDOWN))) {
char *event_name, *sender;
if ((event_name = switch_event_get_header(event, "orig-event-name")) &&
!strcasecmp(event_name, "HEARTBEAT") && (sender = switch_event_get_header(event, "orig-multicast-sender"))) {
struct peer_status *p;
time_t now = switch_epoch_time_now(NULL);
if (!(p = switch_core_hash_find(globals.peer_hash, sender))) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Host %s not already in hash\n", sender);
p = switch_core_alloc(module_pool, sizeof(struct peer_status));
p->active = SWITCH_FALSE;
p->lastseen = 0;
/*} else { */
/*switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "Host %s last seen %d seconds ago\n", sender, now - p->lastseen); */
}
if (!p->active) {
switch_event_t *local_event;
if (switch_event_create_subclass(&local_event, SWITCH_EVENT_CUSTOM, MULTICAST_PEERUP) == SWITCH_STATUS_SUCCESS) {
char lastseen[21];
switch_event_add_header_string(local_event, SWITCH_STACK_BOTTOM, "Peer", sender);
if (p->lastseen) {
switch_snprintf(lastseen, sizeof(lastseen), "%d", (int) p->lastseen);
} else {
switch_snprintf(lastseen, sizeof(lastseen), "%s", "Never");
}
switch_event_add_header_string(local_event, SWITCH_STACK_BOTTOM, "Lastseen", lastseen);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Peer %s has come up; last seen: %s\n", sender, lastseen);
switch_event_fire(&local_event);
}
}
p->active = SWITCH_TRUE;
p->lastseen = now;
switch_core_hash_insert(globals.peer_hash, sender, p);
}
/* ignore our own events to avoid ping pong */
return;
}
if (event->event_id == SWITCH_EVENT_RELOADXML) {
switch_mutex_lock(globals.mutex);
switch_core_hash_destroy(&globals.event_hash);
globals.event_hash = NULL;
if (globals.psk) {
switch_safe_free(globals.psk);
globals.psk = NULL;
}
switch_core_hash_init(&globals.event_hash, module_pool);
memset(globals.event_list, 0, SWITCH_EVENT_ALL + 1);
if (load_config() != SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Failed to reload config file\n");
} else {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "Event Multicast Reloaded\n");
}
switch_mutex_unlock(globals.mutex);
}
if (event->event_id == SWITCH_EVENT_HEARTBEAT) {
switch_hash_index_t *cur;
switch_ssize_t keylen;
const void *key;
void *value;
time_t now = switch_epoch_time_now(NULL);
struct peer_status *last;
char *host;
for (cur = switch_hash_first(NULL, globals.peer_hash); cur; cur = switch_hash_next(cur)) {
switch_hash_this(cur, &key, &keylen, &value);
host = (char *) key;
last = (struct peer_status *) value;
if (last->active && (now - (last->lastseen)) > 60) {
switch_event_t *local_event;
last->active = SWITCH_FALSE;
if (switch_event_create_subclass(&local_event, SWITCH_EVENT_CUSTOM, MULTICAST_PEERDOWN) == SWITCH_STATUS_SUCCESS) {
char lastseen[21];
switch_event_add_header_string(local_event, SWITCH_STACK_BOTTOM, "Peer", host);
switch_snprintf(lastseen, sizeof(lastseen), "%d", (int) last->lastseen);
switch_event_add_header_string(local_event, SWITCH_STACK_BOTTOM, "Lastseen", lastseen);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Peer %s has gone down; last seen: %s\n", host, lastseen);
switch_event_fire(&local_event);
}
}
}
}
switch_mutex_lock(globals.mutex);
if (globals.event_list[(uint8_t) SWITCH_EVENT_ALL]) {
send = 1;
} else if ((globals.event_list[(uint8_t) event->event_id])) {
if (event->event_id != SWITCH_EVENT_CUSTOM || (event->subclass_name && switch_core_hash_find(globals.event_hash, event->subclass_name))) {
send = 1;
}
}
switch_mutex_unlock(globals.mutex);
if (send) {
char *packet;
switch (event->event_id) {
case SWITCH_EVENT_LOG:
return;
default:
switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "Multicast-Sender", switch_core_get_switchname());
if (switch_event_serialize(event, &packet, SWITCH_TRUE) == SWITCH_STATUS_SUCCESS) {
size_t len;
char *buf;
#ifdef HAVE_OPENSSL
int outlen, tmplen;
EVP_CIPHER_CTX ctx;
char uuid_str[SWITCH_UUID_FORMATTED_LENGTH + 1];
switch_uuid_t uuid;
switch_uuid_get(&uuid);
switch_uuid_format(uuid_str, &uuid);
len = strlen(packet) + SWITCH_UUID_FORMATTED_LENGTH + EVP_MAX_IV_LENGTH + strlen((char *) MAGIC);
#else
len = strlen(packet) + strlen((char *) MAGIC);
#endif
buf = malloc(len + 1);
memset(buf, 0, len + 1);
switch_assert(buf);
#ifdef HAVE_OPENSSL
if (globals.psk) {
switch_copy_string(buf, uuid_str, SWITCH_UUID_FORMATTED_LENGTH);
EVP_CIPHER_CTX_init(&ctx);
EVP_EncryptInit(&ctx, EVP_bf_cbc(), NULL, NULL);
EVP_CIPHER_CTX_set_key_length(&ctx, strlen(globals.psk));
EVP_EncryptInit(&ctx, NULL, (unsigned char *) globals.psk, (unsigned char *) uuid_str);
EVP_EncryptUpdate(&ctx, (unsigned char *) buf + SWITCH_UUID_FORMATTED_LENGTH,
&outlen, (unsigned char *) packet, (int) strlen(packet));
EVP_EncryptUpdate(&ctx, (unsigned char *) buf + SWITCH_UUID_FORMATTED_LENGTH + outlen,
&tmplen, (unsigned char *) MAGIC, (int) strlen((char *) MAGIC));
outlen += tmplen;
EVP_EncryptFinal(&ctx, (unsigned char *) buf + SWITCH_UUID_FORMATTED_LENGTH + outlen, &tmplen);
outlen += tmplen;
len = (size_t) outlen + SWITCH_UUID_FORMATTED_LENGTH;
*(buf + SWITCH_UUID_FORMATTED_LENGTH + outlen) = '\0';
} else {
#endif
switch_copy_string(buf, packet, len);
switch_copy_string(buf + strlen(packet), (char *) MAGIC, strlen((char *) MAGIC) + 1);
#ifdef HAVE_OPENSSL
}
#endif
switch_socket_sendto(globals.udp_socket, globals.addr, 0, buf, &len);
switch_safe_free(packet);
switch_safe_free(buf);
}
break;
}
}
return;
}