mjs-sys 0.1.2

/*
 * Copyright (c) 2014-2018 Cesanta Software Limited
 * All rights reserved
 *
 * Licensed under the Apache License, Version 2.0 (the ""License"");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an ""AS IS"" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#if MG_NET_IF == MG_NET_IF_SIMPLELINK

#include <errno.h>
#include <stdio.h>

#include "common/platform.h"

const char *inet_ntop(int af, const void *src, char *dst, socklen_t size) {
  int res;
  struct in_addr *in = (struct in_addr *) src;
  if (af != AF_INET) {
    errno = ENOTSUP;
    return NULL;
  }
  res = snprintf(dst, size, "%lu.%lu.%lu.%lu", SL_IPV4_BYTE(in->s_addr, 0),
                 SL_IPV4_BYTE(in->s_addr, 1), SL_IPV4_BYTE(in->s_addr, 2),
                 SL_IPV4_BYTE(in->s_addr, 3));
  return res > 0 ? dst : NULL;
}

char *inet_ntoa(struct in_addr n) {
  static char a[16];
  return (char *) inet_ntop(AF_INET, &n, a, sizeof(a));
}

int inet_pton(int af, const char *src, void *dst) {
  uint32_t a0, a1, a2, a3;
  uint8_t *db = (uint8_t *) dst;
  if (af != AF_INET) {
    errno = ENOTSUP;
    return 0;
  }
  if (sscanf(src, "%lu.%lu.%lu.%lu", &a0, &a1, &a2, &a3) != 4) {
    return 0;
  }
  *db = a3;
  *(db + 1) = a2;
  *(db + 2) = a1;
  *(db + 3) = a0;
  return 1;
}

#endif /* MG_NET_IF == MG_NET_IF_SIMPLELINK */