lib/roken/getifaddrs-test.c

   1 /*
   2  * Copyright (c) 2009 Kungliga Tekniska Högskolan
   3  * (Royal Institute of Technology, Stockholm, Sweden).
   4  * All rights reserved.
   5  *
   6  * Portions Copyright (c) 2009, Secure Endpoints Inc. All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  *
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * 3. Neither the name of the Institute nor the names of its contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  */
  35
  36 #include <config.h>
  37 #include <err.h>
  38
  39 #include "roken.h"
  40
  41 #include <ifaddrs.h>
  42
  43 static void
  44 print_addr(const char *s, struct sockaddr *sa)
  45 {
  46     int i;
  47     printf("  %s=%d/", s, sa->sa_family);
  48 #ifdef HAVE_STRUCT_SOCKADDR_SA_LEN
  49     for(i = 0; i < sa->sa_len - ((long)sa->sa_data - (long)&sa->sa_family); i++)
  50         printf("%02x", ((unsigned char*)sa->sa_data)[i]);
  51 #else
  52     for(i = 0; i < sizeof(sa->sa_data); i++)
  53         printf("%02x", ((unsigned char*)sa->sa_data)[i]);
  54 #endif
  55     printf("\n");
  56 }
  57
  58 static void
  59 print_ifaddrs(struct ifaddrs *x)
  60 {
  61     struct ifaddrs *p;
  62
  63     for(p = x; p; p = p->ifa_next) {
  64         printf("%s\n", p->ifa_name);
  65         printf("  flags=%x\n", p->ifa_flags);
  66         if(p->ifa_addr)
  67             print_addr("addr", p->ifa_addr);
  68         if(p->ifa_dstaddr)
  69             print_addr("dstaddr", p->ifa_dstaddr);
  70         if(p->ifa_netmask)
  71             print_addr("netmask", p->ifa_netmask);
  72         printf("  %p\n", p->ifa_data);
  73     }
  74 }
  75
  76 int
  77 main(int argc, char **argv)
  78 {
  79     struct ifaddrs *addrs = NULL;
  80     int ret;
  81
  82     if (rk_SOCK_INIT())
  83         errx(1, "Couldn't initialize sockets. Err=%d\n", rk_SOCK_ERRNO);
  84
  85     ret = getifaddrs(&addrs);
  86     if (ret != 0)
  87         err(1, "getifaddrs");
  88
  89     if (addrs == NULL)
  90         errx(1, "address == NULL");
  91
  92     print_ifaddrs(addrs);
  93
  94     /* Check that freeifaddrs doesn't crash */
  95     freeifaddrs(addrs);
  96
  97     if (rk_SOCK_EXIT())
  98         errx(1, "Couldn't uninitialize sockets. Err=%d\n", rk_SOCK_ERRNO);
  99
 100     return 0;
 101 }