unix4lyfe git - darkstat/blob - addr.h

   1 /* darkstat 3
   2  * copyright (c) 2011 Emil Mikulic.
   3  *
   4  * addr.h: compound IPv4/IPv6 address
   5  * (because struct sockaddr_storage stores too much)
   6  *
   7  * You may use, modify and redistribute this file under the terms of the
   8  * GNU General Public License version 2. (see COPYING.GPL)
   9  */
  10 #ifndef __DARKSTAT_ADDR_H
  11 #define __DARKSTAT_ADDR_H
  12
  13 #include <arpa/inet.h>
  14
  15 struct addr {
  16    union {
  17       in_addr_t v4;
  18       struct in6_addr v6;
  19    } ip;
  20    enum { IPv4 = 4, IPv6 = 6 } family;
  21 };
  22
  23 int addr_equal(const struct addr * const a, const struct addr * const b);
  24 const char *addr_to_str(const struct addr * const a);
  25 void addr_mask(struct addr *a, const struct addr * const mask);
  26 int addr_inside(const struct addr * const a,
  27    const struct addr * const net, const struct addr * const mask);
  28
  29 /* Returns 0 on success, gai_strerror() code otherwise. */
  30 int str_to_addr(const char *s, struct addr *a);
  31
  32 #endif
  33 /* vim:set ts=3 sw=3 tw=78 et: */