ACE/tests/Enum_Interfaces_Test.cpp

   1 /* -*- C++ -*- */
   2
   3 //=============================================================================
   4 /**
   5  *  @file    Enum_Interfaces_Test.cpp
   6  *
   7  *   This is a simple test of <ACE::get_ip_interfaces>.  This call
   8  *   retrieves the IP addresses assigned to the host by
   9  *   interrogating the kernel.  Network applications typically
  10  *   assume gethostbyname(uname()) will work, but this is just a
  11  *   convention. It is also problematic if the resolver code
  12  *   (DNS/NIS+...) is misconfigured. This happens more than
  13  *   programmers realize. It is better to find out by asking the
  14  *   kernel for local address assignments. This API is similar to
  15  *   what netstat -ni or ifconfig -a produces on UNIX or ipconfig on
  16  *   Windows NT. In fact, it was by reverse engineering these tools
  17  *   that this api was created.
  18  *
  19  *  @author Michael R. MacFaden <mrm@cisco.com>
  20  */
  21 //=============================================================================
  22
  23
  24 #include "test_config.h"
  25 #include "ace/OS_NS_sys_utsname.h"
  26 #include "ace/INET_Addr.h"
  27
  28
  29
  30 int
  31 run_main (int, ACE_TCHAR *[])
  32 {
  33   ACE_START_TEST (ACE_TEXT ("Enum_Interfaces_Test"));
  34
  35   ACE_utsname uname;
  36   ACE_OS::uname (&uname);
  37   ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("Machine: %C running on %C\n"),
  38               uname.nodename, uname.machine ));
  39   ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("Platform: %C, %C, %C\n"),
  40               uname.sysname, uname.release, uname.version ));
  41
  42   ACE_INET_Addr *the_addr_array = 0;
  43   size_t how_many = 0;
  44
  45   int rc = ACE::get_ip_interfaces (how_many, the_addr_array);
  46
  47   if (rc != 0)
  48     ACE_ERROR ((LM_ERROR,
  49                 ACE_TEXT ("%p\n"),
  50                 ACE_TEXT ("ACE::get_ip_interfaces failed")));
  51   else if (how_many == 0)
  52     ACE_ERROR ((LM_ERROR,
  53                 ACE_TEXT ("No interfaces presently configured in the kernel\n")));
  54   else
  55     {
  56       ACE_DEBUG ((LM_DEBUG, ACE_TEXT (" there are %d interfaces\n"), how_many));
  57       int num_ipv4 = 0;
  58       int num_ipv6 = 0;
  59       for (size_t i = 0; i < how_many; i++)
  60         {
  61           if (the_addr_array[i].get_type() == AF_INET)
  62             ++num_ipv4;
  63 #if defined (ACE_HAS_IPV6)
  64           else if (the_addr_array[i].get_type() == AF_INET6)
  65             ++num_ipv6;
  66 #endif /* ACE_HAS_IPV6 */
  67         ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("\t%C\n"),
  68                     the_addr_array[i].get_host_addr ()));
  69         }
  70
  71       delete [] the_addr_array;
  72
  73       ACE_DEBUG ((LM_DEBUG,
  74                   ACE_TEXT (" there are %d IPv4 interfaces, ")
  75                   ACE_TEXT ("and %d IPv6 interfaces\n"),
  76                   num_ipv4, num_ipv6));
  77 #if defined (ACE_HAS_IPV6)
  78       if (num_ipv6 == 0)
  79         {
  80           rc = 1;
  81           ACE_DEBUG ((LM_ERROR,
  82                       ACE_TEXT ("Since ACE_HAS_IPV6 is set, at least 1 ")
  83                       ACE_TEXT ("ipv6 interface was expected\n")));
  84         }
  85 #endif /* ACE_HAS_IPV6  */
  86     }
  87
  88   ACE_END_TEST;
  89   return rc != 0;       // return 1 if get_ip_interfaces() failed
  90 }