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 #include "getarg.h"
  39
  40 #include "roken.h"
  41
  42 #include <ifaddrs.h>
  43
  44 static int verbose_counter;
  45 static int version_flag;
  46 static int help_flag;
  47
  48 static struct getargs args[] = {
  49     {"verbose", 0,      arg_counter,    &verbose_counter,"verbose",     NULL},
  50     {"version", 0,      arg_flag,       &version_flag,  "print version",NULL},
  51     {"help",    0,      arg_flag,       &help_flag,     NULL,           NULL}
  52 };
  53
  54 static void
  55 usage(int ret)
  56 {
  57     arg_printusage (args,
  58                     sizeof(args) / sizeof(args[0]),
  59                     NULL, "");
  60     exit (ret);
  61 }
  62
  63
  64 static void
  65 print_addr(const char *s, struct sockaddr *sa)
  66 {
  67     int i;
  68     printf("  %s=%d/", s, sa->sa_family);
  69 #ifdef HAVE_STRUCT_SOCKADDR_SA_LEN
  70     for(i = 0; i < sa->sa_len - ((long)sa->sa_data - (long)&sa->sa_family); i++)
  71         printf("%02x", ((unsigned char*)sa->sa_data)[i]);
  72 #else
  73     for(i = 0; i < sizeof(sa->sa_data); i++)
  74         printf("%02x", ((unsigned char*)sa->sa_data)[i]);
  75 #endif
  76     printf("\n");
  77 }
  78
  79 static void
  80 print_ifaddrs(struct ifaddrs *x)
  81 {
  82     struct ifaddrs *p;
  83
  84     for(p = x; p; p = p->ifa_next) {
  85         if (verbose_counter) {
  86             printf("%s\n", p->ifa_name);
  87             printf("  flags=%x\n", p->ifa_flags);
  88             if(p->ifa_addr)
  89                 print_addr("addr", p->ifa_addr);
  90             if(p->ifa_dstaddr)
  91                 print_addr("dstaddr", p->ifa_dstaddr);
  92             if(p->ifa_netmask)
  93                 print_addr("netmask", p->ifa_netmask);
  94             printf("  %p\n", p->ifa_data);
  95         }
  96     }
  97 }
  98
  99 int
 100 main(int argc, char **argv)
 101 {
 102     struct ifaddrs *addrs = NULL;
 103     int ret, optidx = 0;
 104
 105     setprogname (argv[0]);
 106
 107     if (getarg (args, sizeof(args) / sizeof(args[0]), argc, argv,
 108                 &optidx))
 109         usage (1);
 110
 111     if (help_flag)
 112         usage (0);
 113
 114     if (version_flag) {
 115         fprintf (stderr, "%s from %s-%s\n", getprogname(), PACKAGE, VERSION);
 116         return 0;
 117     }
 118
 119     if (rk_SOCK_INIT())
 120         errx(1, "Couldn't initialize sockets. Err=%d\n", rk_SOCK_ERRNO);
 121
 122     ret = getifaddrs(&addrs);
 123     if (ret != 0)
 124         err(1, "getifaddrs");
 125
 126     if (addrs == NULL)
 127         errx(1, "address == NULL");
 128
 129     print_ifaddrs(addrs);
 130
 131     /* Check that freeifaddrs doesn't crash */
 132     freeifaddrs(addrs);
 133
 134     rk_SOCK_EXIT();
 135
 136     return 0;
 137 }