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0.99.22

    1: /*
    2:  * Socket union header.
    3:  * Copyright (c) 1997 Kunihiro Ishiguro
    4:  *
    5:  * This file is part of GNU Zebra.
    6:  *
    7:  * GNU Zebra is free software; you can redistribute it and/or modify it
    8:  * under the terms of the GNU General Public License as published by the
    9:  * Free Software Foundation; either version 2, or (at your option) any
   10:  * later version.
   11:  *
   12:  * GNU Zebra is distributed in the hope that it will be useful, but
   13:  * WITHOUT ANY WARRANTY; without even the implied warranty of
   14:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   15:  * General Public License for more details.
   16:  *
   17:  * You should have received a copy of the GNU General Public License
   18:  * along with GNU Zebra; see the file COPYING.  If not, write to the Free
   19:  * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
   20:  * 02111-1307, USA.  
   21:  */
   22: 
   23: #ifndef _ZEBRA_SOCKUNION_H
   24: #define _ZEBRA_SOCKUNION_H
   25: 
   26: #if 0
   27: union sockunion {
   28:   struct sockinet {
   29:     u_char si_len;
   30:     u_char si_family;
   31:     u_short si_port;
   32:   } su_si;
   33:   struct sockaddr_in  su_sin;
   34:   struct sockaddr_in6 su_sin6;
   35: };
   36: #define su_len                su_si.si_len
   37: #define su_family     su_si.si_family
   38: #define su_port               su_si.si_port
   39: #endif /* 0 */
   40: 
   41: union sockunion 
   42: {
   43:   struct sockaddr sa;
   44:   struct sockaddr_in sin;
   45: #ifdef HAVE_IPV6
   46:   struct sockaddr_in6 sin6;
   47: #endif /* HAVE_IPV6 */
   48: };
   49: 
   50: enum connect_result
   51: {
   52:   connect_error,
   53:   connect_success,
   54:   connect_in_progress
   55: };
   56: 
   57: /* Default address family. */
   58: #ifdef HAVE_IPV6
   59: #define AF_INET_UNION AF_INET6
   60: #else
   61: #define AF_INET_UNION AF_INET
   62: #endif
   63: 
   64: /* Sockunion address string length.  Same as INET6_ADDRSTRLEN. */
   65: #define SU_ADDRSTRLEN 46
   66: 
   67: /* Macro to set link local index to the IPv6 address.  For KAME IPv6
   68:    stack. */
   69: #ifdef KAME
   70: #define	IN6_LINKLOCAL_IFINDEX(a)  ((a).s6_addr[2] << 8 | (a).s6_addr[3])
   71: #define SET_IN6_LINKLOCAL_IFINDEX(a, i) \
   72:   do { \
   73:     (a).s6_addr[2] = ((i) >> 8) & 0xff; \
   74:     (a).s6_addr[3] = (i) & 0xff; \
   75:   } while (0)
   76: #else
   77: #define	IN6_LINKLOCAL_IFINDEX(a)
   78: #define SET_IN6_LINKLOCAL_IFINDEX(a, i)
   79: #endif /* KAME */
   80: 
   81: #define sockunion_family(X)  (X)->sa.sa_family
   82: 
   83: #define sockunion2ip(X)      (X)->sin.sin_addr.s_addr
   84: 
   85: /* Prototypes. */
   86: extern int str2sockunion (const char *, union sockunion *);
   87: extern const char *sockunion2str (union sockunion *, char *, size_t);
   88: extern int sockunion_cmp (union sockunion *, union sockunion *);
   89: extern int sockunion_same (union sockunion *, union sockunion *);
   90: 
   91: extern union sockunion *sockunion_str2su (const char *str);
   92: extern int sockunion_accept (int sock, union sockunion *);
   93: extern int sockunion_stream_socket (union sockunion *);
   94: extern int sockopt_reuseaddr (int);
   95: extern int sockopt_reuseport (int);
   96: extern int sockopt_v6only (int family, int sock);
   97: extern int sockunion_bind (int sock, union sockunion *, 
   98:                            unsigned short, union sockunion *);
   99: extern int sockopt_ttl (int family, int sock, int ttl);
  100: extern int sockopt_minttl (int family, int sock, int minttl);
  101: extern int sockopt_cork (int sock, int onoff);
  102: extern int sockunion_socket (union sockunion *su);
  103: extern const char *inet_sutop (union sockunion *su, char *str);
  104: extern enum connect_result sockunion_connect (int fd, union sockunion *su, 
  105:                                               unsigned short port,
  106:                                               unsigned int);
  107: extern union sockunion *sockunion_getsockname (int);
  108: extern union sockunion *sockunion_getpeername (int);
  109: extern union sockunion *sockunion_dup (union sockunion *);
  110: extern void sockunion_free (union sockunion *);
  111: 
  112: #ifndef HAVE_INET_NTOP
  113: extern const char * inet_ntop (int family, const void *addrptr, 
  114:                                char *strptr, size_t len);
  115: #endif /* HAVE_INET_NTOP */
  116: 
  117: #ifndef HAVE_INET_PTON
  118: extern int inet_pton (int family, const char *strptr, void *addrptr);
  119: #endif /* HAVE_INET_PTON */
  120: 
  121: #ifndef HAVE_INET_ATON
  122: extern int inet_aton (const char *cp, struct in_addr *inaddr);
  123: #endif
  124: 
  125: #endif /* _ZEBRA_SOCKUNION_H */