C++ (Cpp) mdnsd_set_hostname_v6 Exemples

Exemple #1

Fichier : mdns_tinysvcmdns.c Projet : Celestrion/shairport-sync

static int mdns_tinysvcmdns_register(char *apname, int port) {
  struct ifaddrs *ifalist;
  struct ifaddrs *ifa;

  svr = mdnsd_start();
  if (svr == NULL) {
    warn("tinysvcmdns: mdnsd_start() failed");
    return -1;
  }

  // Thanks to Paul Lietar for this
  // room for name + .local + NULL
  char hostname[100 + 6];
  gethostname(hostname, 99);
  // according to POSIX, this may be truncated without a final NULL !
  hostname[99] = 0;

  // will not work if the hostname doesn't end in .local
  char *hostend = hostname + strlen(hostname);
  if ((strlen(hostname) < strlen(".local")) || (strcmp(hostend - 6, ".local") != 0)) {
    strcat(hostname, ".local");
  }

  if (getifaddrs(&ifalist) < 0) {
    warn("tinysvcmdns: getifaddrs() failed");
    return -1;
  }

  ifa = ifalist;

  // Look for an ipv4/ipv6 non-loopback interface to use as the main one.
  for (ifa = ifalist; ifa != NULL; ifa = ifa->ifa_next) {
    if (!(ifa->ifa_flags & IFF_LOOPBACK) && ifa->ifa_addr && ifa->ifa_addr->sa_family == AF_INET) {
      uint32_t main_ip = ((struct sockaddr_in *)ifa->ifa_addr)->sin_addr.s_addr;

      mdnsd_set_hostname(svr, hostname, main_ip); // TTL should be 120 seconds
      break;
    } else if (!(ifa->ifa_flags & IFF_LOOPBACK) && ifa->ifa_addr &&
               ifa->ifa_addr->sa_family == AF_INET6) {
      struct in6_addr *addr = &((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_addr;

      mdnsd_set_hostname_v6(svr, hostname, addr); // TTL should be 120 seconds
      break;
    }
  }

  if (ifa == NULL) {
    warn("tinysvcmdns: no non-loopback ipv4 or ipv6 interface found");
    return -1;
  }

  // Skip the first one, it was already added by set_hostname
  for (ifa = ifa->ifa_next; ifa != NULL; ifa = ifa->ifa_next) {
    if (ifa->ifa_flags & IFF_LOOPBACK) // Skip loop-back interfaces
      continue;

    switch (ifa->ifa_addr->sa_family) {
    case AF_INET: { // ipv4
      uint32_t ip = ((struct sockaddr_in *)ifa->ifa_addr)->sin_addr.s_addr;
      struct rr_entry *a_e = rr_create_a(create_nlabel(hostname), ip); // TTL should be 120 seconds
      mdnsd_add_rr(svr, a_e);
    } break;
    case AF_INET6: { // ipv6
      struct in6_addr *addr = &((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_addr;
      struct rr_entry *aaaa_e =
          rr_create_aaaa(create_nlabel(hostname), addr); // TTL should be 120 seconds
      mdnsd_add_rr(svr, aaaa_e);
    } break;
    }
  }

  freeifaddrs(ifa);

  char *txtwithoutmetadata[] = {MDNS_RECORD_WITHOUT_METADATA, NULL};
#ifdef CONFIG_METADATA
  char *txtwithmetadata[] = {MDNS_RECORD_WITH_METADATA, NULL};
#endif
  char **txt;

#ifdef CONFIG_METADATA
  if (config.metadata_enabled)
    txt = txtwithmetadata;
  else
#endif

    txt = txtwithoutmetadata;

  struct mdns_service *svc =
      mdnsd_register_svc(svr, apname, "_raop._tcp.local", port, NULL,
                         (const char **)txt); // TTL should be 75 minutes, i.e. 4500 seconds

  mdns_service_destroy(svc);

  return 0;
}

Exemple #2

Fichier : mdns_tinysvcmdns.c Projet : Klausi69/shairport

static int mdns_tinysvcmdns_register(char *apname, int port) {
    struct ifaddrs *ifalist;
    struct ifaddrs *ifa;

    svr = mdnsd_start();
    if (svr == NULL) {
        warn("tinysvcmdns: mdnsd_start() failed");
        return -1;
    }

    // room for name + .local + NULL
    char hostname[100 + 6];
    gethostname(hostname, 99);
    // according to POSIX, this may be truncated without a final NULL !
    hostname[99] = 0;

    // will not work on iOS if the hostname doesn't end in .local
    strcat(hostname, ".local");

    if (getifaddrs(&ifalist) < 0)
    {
        warn("tinysvcmdns: getifaddrs() failed");
        return -1;
    }

    ifa = ifalist;

    // Look for an ipv4/ipv6 non-loopback interface to use as the main one.
    for (ifa = ifalist; ifa != NULL; ifa = ifa->ifa_next)
    {
        if (!(ifa->ifa_flags & IFF_LOOPBACK) && ifa->ifa_addr &&
            ifa->ifa_addr->sa_family == AF_INET)
        {
            uint32_t main_ip = ((struct sockaddr_in *)ifa->ifa_addr)->sin_addr.s_addr;

            mdnsd_set_hostname(svr, hostname, main_ip);
            break;
        }
        else if (!(ifa->ifa_flags & IFF_LOOPBACK) && ifa->ifa_addr &&
                 ifa->ifa_addr->sa_family == AF_INET6)
        {
            struct in6_addr *addr = &((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_addr;

            mdnsd_set_hostname_v6(svr, hostname, addr);
            break;
        }
    }

    if (ifa == NULL)
    {
        warn("tinysvcmdns: no non-loopback ipv4 or ipv6 interface found");
        return -1;
    }


    // Skip the first one, it was already added by set_hostname
    for (ifa = ifa->ifa_next; ifa != NULL; ifa = ifa->ifa_next)
    {
        if (ifa->ifa_flags & IFF_LOOPBACK) // Skip loop-back interfaces
            continue;

        switch (ifa->ifa_addr->sa_family)
        {
            case AF_INET: { // ipv4
                    uint32_t ip = ((struct sockaddr_in *)ifa->ifa_addr)->sin_addr.s_addr;
                    struct rr_entry *a_e = rr_create_a(create_nlabel(hostname), ip);
                    mdnsd_add_rr(svr, a_e);
                }
                break;
            case AF_INET6: { // ipv6
                    struct in6_addr *addr = &((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_addr;
                    struct rr_entry *aaaa_e = rr_create_aaaa(create_nlabel(hostname), addr);
                    mdnsd_add_rr(svr, aaaa_e);
                }
                break;
        }
    }

    freeifaddrs(ifa);

    const char *txt[] = { MDNS_RECORD, NULL };
    struct mdns_service *svc = mdnsd_register_svc(svr,
                                apname,
                                "_raop._tcp.local",
                                port,
                                NULL,
                                txt);

    mdns_service_destroy(svc);

    return 0;
}