+static struct addrinfo* rtp_resolve_host(const char *hostname, int port,
+ int type, int family, int flags)
+{
+ struct addrinfo hints = { 0 }, *res = 0;
+ int error;
+ char service[16];
+
+ snprintf(service, sizeof(service), "%d", port);
+ hints.ai_socktype = type;
+ hints.ai_family = family;
+ hints.ai_flags = flags;
+ if ((error = getaddrinfo(hostname, service, &hints, &res))) {
+ res = NULL;
+ av_log(NULL, AV_LOG_ERROR, "rtp_resolve_host: %s\n", gai_strerror(error));
+ }
+
+ return res;
+}
+
+static int compare_addr(const struct sockaddr_storage *a,
+ const struct sockaddr_storage *b)
+{
+ if (a->ss_family != b->ss_family)
+ return 1;
+ if (a->ss_family == AF_INET) {
+ return (((const struct sockaddr_in *)a)->sin_addr.s_addr !=
+ ((const struct sockaddr_in *)b)->sin_addr.s_addr);
+ }
+
+#if defined(IPPROTO_IPV6)
+ if (a->ss_family == AF_INET6) {
+ const uint8_t *s6_addr_a = ((const struct sockaddr_in6 *)a)->sin6_addr.s6_addr;
+ const uint8_t *s6_addr_b = ((const struct sockaddr_in6 *)b)->sin6_addr.s6_addr;
+ return memcmp(s6_addr_a, s6_addr_b, 16);
+ }
+#endif
+ return 1;
+}
+
+static int rtp_check_source_lists(RTPContext *s, struct sockaddr_storage *source_addr_ptr)
+{
+ int i;
+ if (s->nb_ssm_exclude_addrs) {
+ for (i = 0; i < s->nb_ssm_exclude_addrs; i++) {
+ if (!compare_addr(source_addr_ptr, s->ssm_exclude_addrs[i]))
+ return 1;
+ }
+ }
+ if (s->nb_ssm_include_addrs) {
+ for (i = 0; i < s->nb_ssm_include_addrs; i++) {
+ if (!compare_addr(source_addr_ptr, s->ssm_include_addrs[i]))
+ return 0;
+ }
+ return 1;
+ }
+ return 0;
+}