lib/replace/test/getifaddrs.c

   1 /*
   2  * Unix SMB/CIFS implementation.
   3  *
   4  * libreplace getifaddrs test
   5  *
   6  * Copyright (C) Michael Adam <obnox@samba.org> 2008
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 3 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20  */
  21
  22 #ifndef AUTOCONF_TEST
  23 #include "replace.h"
  24 #include "system/network.h"
  25 #endif
  26
  27 #ifdef HAVE_INET_NTOP
  28 #define rep_inet_ntop inet_ntop
  29 #endif
  30
  31 static const char *format_sockaddr(struct sockaddr *addr,
  32                                    char *addrstring,
  33                                    socklen_t addrlen)
  34 {
  35         const char *result = NULL;
  36
  37         if (addr->sa_family == AF_INET) {
  38                 result = rep_inet_ntop(AF_INET,
  39                                        &((struct sockaddr_in *)addr)->sin_addr,
  40                                        addrstring,
  41                                        addrlen);
  42 #ifdef HAVE_STRUCT_SOCKADDR_IN6
  43         } else if (addr->sa_family == AF_INET6) {
  44                 result = rep_inet_ntop(AF_INET6,
  45                                        &((struct sockaddr_in6 *)addr)->sin6_addr,
  46                                        addrstring,
  47                                        addrlen);
  48 #endif
  49         }
  50         return result;
  51 }
  52
  53 int getifaddrs_test(void)
  54 {
  55         struct ifaddrs *ifs = NULL;
  56         struct ifaddrs *ifs_head = NULL;
  57         int ret;
  58
  59         ret = getifaddrs(&ifs);
  60         ifs_head = ifs;
  61         if (ret != 0) {
  62                 fprintf(stderr, "getifaddrs() failed: %s\n", strerror(errno));
  63                 return 1;
  64         }
  65
  66         while (ifs) {
  67                 printf("%-10s ", ifs->ifa_name);
  68                 if (ifs->ifa_addr != NULL) {
  69                         char addrstring[INET6_ADDRSTRLEN];
  70                         const char *result;
  71
  72                         result = format_sockaddr(ifs->ifa_addr,
  73                                                  addrstring,
  74                                                  sizeof(addrstring));
  75                         if (result != NULL) {
  76                                 printf("IP=%s ", addrstring);
  77                         }
  78
  79                         if (ifs->ifa_netmask != NULL) {
  80                                 result = format_sockaddr(ifs->ifa_netmask,
  81                                                          addrstring,
  82                                                          sizeof(addrstring));
  83                                 if (result != NULL) {
  84                                         printf("NETMASK=%s", addrstring);
  85                                 }
  86                         } else {
  87                                 printf("AF=%d ", ifs->ifa_addr->sa_family);
  88                         }
  89                 } else {
  90                         printf("<no address>");
  91                 }
  92
  93                 printf("\n");
  94                 ifs = ifs->ifa_next;
  95         }
  96
  97         freeifaddrs(ifs_head);
  98
  99         return 0;
 100 }