tests/test-getaddrinfo.c

   1 /* Test the getaddrinfo module.
   2
   3    Copyright (C) 2006-2020 Free Software Foundation, Inc.
   4
   5    This program is free software: you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 3 of the License, or
   8    (at your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  17
  18 /* Written by Simon Josefsson.  */
  19
  20 #include <config.h>
  21
  22 #include <netdb.h>
  23
  24 #include "signature.h"
  25 SIGNATURE_CHECK (gai_strerror, char const *, (int));
  26 /* On native Windows, these two functions may have the __stdcall calling
  27    convention.  But the SIGNATURE_CHECK works only for functions with __cdecl
  28    calling convention.  */
  29 #if !(defined _WIN32 && !defined __CYGWIN__)
  30 SIGNATURE_CHECK (freeaddrinfo, void, (struct addrinfo *));
  31 SIGNATURE_CHECK (getaddrinfo, int, (char const *, char const *,
  32                                     struct addrinfo const *,
  33                                     struct addrinfo **));
  34 #endif
  35
  36 #include <arpa/inet.h>
  37 #include <errno.h>
  38 #include <netinet/in.h>
  39 #include <stdio.h>
  40 #include <string.h>
  41
  42 #include "sockets.h"
  43
  44 /* Whether to print debugging messages.  */
  45 #define ENABLE_DEBUGGING 0
  46
  47 #if ENABLE_DEBUGGING
  48 # define dbgprintf printf
  49 #else
  50 # define dbgprintf if (0) printf
  51 #endif
  52
  53 /* BeOS does not have AF_UNSPEC.  */
  54 #ifndef AF_UNSPEC
  55 # define AF_UNSPEC 0
  56 #endif
  57
  58 #ifndef EAI_SERVICE
  59 # define EAI_SERVICE 0
  60 #endif
  61
  62 static int
  63 simple (char const *host, char const *service)
  64 {
  65   char buf[BUFSIZ];
  66   static int skip = 0;
  67   struct addrinfo hints;
  68   struct addrinfo *ai0, *ai;
  69   int res;
  70   int err;
  71
  72   /* Once we skipped the test, do not try anything else */
  73   if (skip)
  74     return 0;
  75
  76   dbgprintf ("Finding %s service %s...\n", host, service);
  77
  78   /* This initializes "hints" but does not use it.  Is there a reason
  79      for this?  If so, please fix this comment.  */
  80   memset (&hints, 0, sizeof (hints));
  81   hints.ai_flags = AI_CANONNAME;
  82   hints.ai_family = AF_UNSPEC;
  83   hints.ai_socktype = SOCK_STREAM;
  84
  85   res = getaddrinfo (host, service, 0, &ai0);
  86   err = errno;
  87
  88   dbgprintf ("res %d: %s\n", res, gai_strerror (res));
  89
  90   if (res != 0)
  91     {
  92       /* EAI_AGAIN is returned if no network is available. Don't fail
  93          the test merely because someone is down the country on their
  94          in-law's farm. */
  95       if (res == EAI_AGAIN)
  96         {
  97           skip++;
  98           fprintf (stderr, "skipping getaddrinfo test: no network?\n");
  99           return 77;
 100         }
 101       /* IRIX reports EAI_NONAME for "https".  Don't fail the test
 102          merely because of this.  */
 103       if (res == EAI_NONAME)
 104         return 0;
 105       /* Solaris reports EAI_SERVICE for "http" and "https".  Don't
 106          fail the test merely because of this.  */
 107       if (res == EAI_SERVICE)
 108         return 0;
 109 #ifdef EAI_NODATA
 110       /* AIX reports EAI_NODATA for "https".  Don't fail the test
 111          merely because of this.  */
 112       if (res == EAI_NODATA)
 113         return 0;
 114 #endif
 115       /* Provide details if errno was set.  */
 116       if (res == EAI_SYSTEM)
 117         fprintf (stderr, "system error: %s\n", strerror (err));
 118
 119       return 1;
 120     }
 121
 122   for (ai = ai0; ai; ai = ai->ai_next)
 123     {
 124       void *ai_addr = ai->ai_addr;
 125       struct sockaddr_in *sock_addr = ai_addr;
 126       dbgprintf ("\tflags %x\n", ai->ai_flags + 0u);
 127       dbgprintf ("\tfamily %x\n", ai->ai_family + 0u);
 128       dbgprintf ("\tsocktype %x\n", ai->ai_socktype + 0u);
 129       dbgprintf ("\tprotocol %x\n", ai->ai_protocol + 0u);
 130       dbgprintf ("\taddrlen %lu: ", (unsigned long) ai->ai_addrlen);
 131       dbgprintf ("\tFound %s\n",
 132                  inet_ntop (ai->ai_family,
 133                             &sock_addr->sin_addr,
 134                             buf, sizeof (buf) - 1));
 135       if (ai->ai_canonname)
 136         dbgprintf ("\tFound %s...\n", ai->ai_canonname);
 137
 138       {
 139         char ipbuf[BUFSIZ];
 140         char portbuf[BUFSIZ];
 141
 142         res = getnameinfo (ai->ai_addr, ai->ai_addrlen,
 143                            ipbuf, sizeof (ipbuf) - 1,
 144                            portbuf, sizeof (portbuf) - 1,
 145                            NI_NUMERICHOST|NI_NUMERICSERV);
 146         dbgprintf ("\t\tgetnameinfo %d: %s\n", res, gai_strerror (res));
 147         if (res == 0)
 148           {
 149             dbgprintf ("\t\tip %s\n", ipbuf);
 150             dbgprintf ("\t\tport %s\n", portbuf);
 151           }
 152       }
 153
 154     }
 155
 156   freeaddrinfo (ai0);
 157
 158   return 0;
 159 }
 160
 161 #define HOST1 "www.gnu.org"
 162 #define SERV1 "http"
 163 #define HOST2 "www.ibm.com"
 164 #define SERV2 "https"
 165 #define HOST3 "microsoft.com"
 166 #define SERV3 "http"
 167 #define HOST4 "google.org"
 168 #define SERV4 "ldap"
 169
 170 int main (void)
 171 {
 172   (void) gl_sockets_startup (SOCKETS_1_1);
 173
 174   return simple (HOST1, SERV1)
 175     + simple (HOST2, SERV2)
 176     + simple (HOST3, SERV3)
 177     + simple (HOST4, SERV4);
 178 }