text: /*
   * utils.c
   *
   * Created on: 19/09/2012
   * =========================================================================
   * Copyright (c) 2016-2019 Daniele De Sensi (d.desensi.software@gmail.com)
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to deal
   * in the Software without restriction, including without limitation the rights
   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   * copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
   * SOFTWARE.
   * =========================================================================
   */
  #include <peafowl/utils.h>
  #include <string.h>
  #include <sys/types.h>
  
  uint8_t pfwl_v6_addresses_equal(struct in6_addr x, struct in6_addr y) {
    uint8_t i;
    for (i = 0; i < 16; i++) {
      if (x.s6_addr[i] != y.s6_addr[i])
        return 0;
    }
    return 1;
  }
  
  char *pfwl_strnstr(const char *haystack, const char *needle, size_t len) {
    int i;
    size_t needle_len;
  
    if (0 == (needle_len = strnlen(needle, len)))
      return (char *) haystack;
  
    for (i = 0; i <= (int) (len - needle_len); i++) {
      if ((haystack[0] == needle[0]) &&
          (0 == strncmp(haystack, needle, needle_len)))
        return (char *) haystack;
  
      haystack++;
    }
    return NULL;
  }
  