resolv/tst-inet_ntop.c

   1 #include <arpa/inet.h>
   2 #include <errno.h>
   3 #include <netinet/in.h>
   4 #include <stdio.h>
   5 #include <string.h>
   6
   7 int
   8 main (void)
   9 {
  10   struct in_addr addr4;
  11   struct in6_addr addr6;
  12   char buf[64];
  13   int result = 0;
  14
  15   addr4.s_addr = 0xe0e0e0e0;
  16   addr6.s6_addr16[0] = 0;
  17   addr6.s6_addr16[1] = 0;
  18   addr6.s6_addr16[2] = 0;
  19   addr6.s6_addr16[3] = 0;
  20   addr6.s6_addr16[4] = 0;
  21   addr6.s6_addr16[5] = 0xffff;
  22   addr6.s6_addr32[3] = 0xe0e0e0e0;
  23   memset (buf, 'x', sizeof buf);
  24
  25   if (inet_ntop (AF_INET, &addr4, buf, 15) != NULL)
  26     {
  27       puts ("1st inet_ntop returned non-NULL");
  28       result++;
  29     }
  30   else if (errno != ENOSPC)
  31     {
  32       puts ("1st inet_ntop didn't fail with ENOSPC");
  33       result++;
  34     }
  35   if (buf[15] != 'x')
  36     {
  37       puts ("1st inet_ntop wrote past the end of buffer");
  38       result++;
  39     }
  40
  41   if (inet_ntop (AF_INET, &addr4, buf, 16) != buf)
  42     {
  43       puts ("2nd inet_ntop did not return buf");
  44       result++;
  45     }
  46   if (memcmp (buf, "224.224.224.224\0" "xxxxxxxx", 24) != 0)
  47     {
  48       puts ("2nd inet_ntop wrote past the end of buffer");
  49       result++;
  50     }
  51
  52   if (inet_ntop (AF_INET6, &addr6, buf, 22) != NULL)
  53     {
  54       puts ("3rd inet_ntop returned non-NULL");
  55       result++;
  56     }
  57   else if (errno != ENOSPC)
  58     {
  59       puts ("3rd inet_ntop didn't fail with ENOSPC");
  60       result++;
  61     }
  62   if (buf[22] != 'x')
  63     {
  64       puts ("3rd inet_ntop wrote past the end of buffer");
  65       result++;
  66     }
  67
  68   if (inet_ntop (AF_INET6, &addr6, buf, 23) != buf)
  69     {
  70       puts ("4th inet_ntop did not return buf");
  71       result++;
  72     }
  73   if (memcmp (buf, "::ffff:224.224.224.224\0" "xxxxxxxx", 31) != 0)
  74     {
  75       puts ("4th inet_ntop wrote past the end of buffer");
  76       result++;
  77     }
  78
  79   memset (&addr6.s6_addr, 0xe0, sizeof (addr6.s6_addr));
  80
  81   if (inet_ntop (AF_INET6, &addr6, buf, 39) != NULL)
  82     {
  83       puts ("5th inet_ntop returned non-NULL");
  84       result++;
  85     }
  86   else if (errno != ENOSPC)
  87     {
  88       puts ("5th inet_ntop didn't fail with ENOSPC");
  89       result++;
  90     }
  91   if (buf[39] != 'x')
  92     {
  93       puts ("5th inet_ntop wrote past the end of buffer");
  94       result++;
  95     }
  96
  97   if (inet_ntop (AF_INET6, &addr6, buf, 40) != buf)
  98     {
  99       puts ("6th inet_ntop did not return buf");
 100       result++;
 101     }
 102   if (memcmp (buf, "e0e0:e0e0:e0e0:e0e0:e0e0:e0e0:e0e0:e0e0\0"
 103                    "xxxxxxxx", 48) != 0)
 104     {
 105       puts ("6th inet_ntop wrote past the end of buffer");
 106       result++;
 107     }
 108
 109
 110   return result;
 111 }