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glibc/inet/test-ifaddrs.c
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/* Test listing of network interface addresses. | |
Copyright (C) 2002-2016 Free Software Foundation, Inc. | |
This file is part of the GNU C Library. | |
The GNU C Library is free software; you can redistribute it and/or | |
modify it under the terms of the GNU Lesser General Public | |
License as published by the Free Software Foundation; either | |
version 2.1 of the License, or (at your option) any later version. | |
The GNU C Library is distributed in the hope that it will be useful, | |
but WITHOUT ANY WARRANTY; without even the implied warranty of | |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
Lesser General Public License for more details. | |
You should have received a copy of the GNU Lesser General Public | |
License along with the GNU C Library; if not, see | |
<http://www.gnu.org/licenses/>. */ | |
#include <errno.h> | |
#include <stdio.h> | |
#include <stdlib.h> | |
#include <string.h> | |
#include <ifaddrs.h> | |
#include <netinet/in.h> | |
#include <arpa/inet.h> | |
static int failures; | |
static const char * | |
addr_string (struct sockaddr *sa, char *buf, size_t size) | |
{ | |
if (sa == NULL) | |
return "<none>"; | |
switch (sa->sa_family) | |
{ | |
case AF_INET: | |
return inet_ntop (AF_INET, &((struct sockaddr_in *) sa)->sin_addr, | |
buf, size); | |
case AF_INET6: | |
return inet_ntop (AF_INET6, &((struct sockaddr_in6 *) sa)->sin6_addr, | |
buf, size); | |
#ifdef AF_LINK | |
case AF_LINK: | |
return "<link>"; | |
#endif | |
case AF_UNSPEC: | |
return "---"; | |
#ifdef AF_PACKET | |
case AF_PACKET: | |
return "<packet>"; | |
#endif | |
default: | |
++failures; | |
printf ("sa_family=%d %08x\n", sa->sa_family, | |
*(int*)&((struct sockaddr_in *) sa)->sin_addr.s_addr); | |
return "<unexpected sockaddr family>"; | |
} | |
} | |
static int | |
do_test (void) | |
{ | |
struct ifaddrs *ifaces, *ifa; | |
if (getifaddrs (&ifaces) < 0) | |
{ | |
if (errno != ENOSYS) | |
{ | |
printf ("Couldn't get any interfaces: %s.\n", strerror (errno)); | |
exit (1); | |
} | |
/* The function is simply not implemented. */ | |
exit (0); | |
} | |
puts ("\ | |
Name Flags Address Netmask Broadcast/Destination"); | |
for (ifa = ifaces; ifa != NULL; ifa = ifa->ifa_next) | |
{ | |
char abuf[64], mbuf[64], dbuf[64]; | |
printf ("%-15s%#.4x %-15s %-15s %-15s\n", | |
ifa->ifa_name, ifa->ifa_flags, | |
addr_string (ifa->ifa_addr, abuf, sizeof (abuf)), | |
addr_string (ifa->ifa_netmask, mbuf, sizeof (mbuf)), | |
addr_string (ifa->ifa_broadaddr, dbuf, sizeof (dbuf))); | |
} | |
freeifaddrs (ifaces); | |
return failures ? 1 : 0; | |
} | |
#define TEST_FUNCTION do_test () | |
#include "../test-skeleton.c" |