inet/tst-inet6_scopeid_pton.c

   1 /* Tests for __inet6_scopeid_pton and IPv6 scopes in getaddrinfo.
   2    Copyright (C) 2016-2021 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library 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 GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <arpa/inet.h>
  20 #include <inttypes.h>
  21 #include <net-internal.h>
  22 #include <net/if.h>
  23 #include <netdb.h>
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26 #include <string.h>
  27 #include <support/check.h>
  28 #include <support/support.h>
  29 #include <support/test-driver.h>
  30
  31 /* An interface which is known to the system.  */
  32 static const char *interface_name;
  33 static uint32_t interface_index;
  34
  35 /* Initiale the variables above.  */
  36 static void
  37 setup_interface (void)
  38 {
  39   struct if_nameindex *list = if_nameindex ();
  40   if (list != NULL && list[0].if_index != 0 && list[0].if_name[0] != '\0')
  41     {
  42       interface_name = list[0].if_name;
  43       interface_index = list[0].if_index;
  44     }
  45 }
  46
  47 /* Convert ADDRESS to struct in6_addr.  */
  48 static struct in6_addr
  49 from_string (const char *address)
  50 {
  51   struct in6_addr addr;
  52   if (inet_pton (AF_INET6, address, &addr) != 1)
  53     FAIL_EXIT1 ("inet_pton (\"%s\")", address);
  54   return addr;
  55 }
  56
  57 /* Invoke getaddrinfo to parse ADDRESS%SCOPE.  Return true if
  58    getaddrinfo was successful.  */
  59 static bool
  60 call_gai (int family, const char *address, const char *scope,
  61           struct sockaddr_in6 *result)
  62 {
  63   struct addrinfo hints =
  64     {
  65       .ai_family = family,
  66       .ai_flags = AI_NUMERICHOST,
  67       .ai_socktype = SOCK_DGRAM,
  68       .ai_protocol = IPPROTO_UDP,
  69     };
  70   char *fulladdr = xasprintf ("%s%%%s", address, scope);
  71   struct addrinfo *ai = NULL;
  72   int ret = getaddrinfo (fulladdr, NULL, &hints, &ai);
  73   if (ret == EAI_ADDRFAMILY || ret == EAI_NONAME)
  74     {
  75       if (test_verbose > 0)
  76         printf ("info: getaddrinfo (\"%s\"): %s (%d)\n",
  77                 fulladdr, gai_strerror (ret), ret);
  78       free (fulladdr);
  79       return false;
  80     }
  81   if (ret != 0)
  82     FAIL_EXIT1 ("getaddrinfo (\"%s\"): %s (%d)\n",
  83                 fulladdr, gai_strerror (ret), ret);
  84   TEST_VERIFY_EXIT (ai != NULL);
  85   TEST_VERIFY_EXIT (ai->ai_addrlen == sizeof (*result));
  86   TEST_VERIFY (ai->ai_family == AF_INET6);
  87   TEST_VERIFY (ai->ai_next == NULL);
  88   memcpy (result, ai->ai_addr, sizeof (*result));
  89   free (fulladdr);
  90   freeaddrinfo (ai);
  91   return true;
  92 }
  93
  94 /* Verify that a successful call to getaddrinfo returned the expected
  95    scope data.  */
  96 static void
  97 check_ai (const char *what, const char *addr_string, const char *scope_string,
  98           const struct sockaddr_in6 *sa,
  99           const struct in6_addr *addr, uint32_t scope)
 100 {
 101   if (memcmp (addr, &sa->sin6_addr, sizeof (*addr)) != 0)
 102     {
 103       support_record_failure ();
 104       printf ("error: getaddrinfo %s address mismatch for %s%%%s\n",
 105               what, addr_string, scope_string);
 106     }
 107   if (sa->sin6_scope_id != scope)
 108     {
 109       support_record_failure ();
 110       printf ("error: getaddrinfo %s scope mismatch for %s%%%s\n"
 111               "  expected: %" PRIu32 "\n"
 112               "  actual:   %" PRIu32 "\n",
 113               what, addr_string, scope_string, scope, sa->sin6_scope_id);
 114     }
 115 }
 116
 117 /* Check a single address were we expected a failure.  */
 118 static void
 119 expect_failure (const char *address, const char *scope)
 120 {
 121   if (test_verbose > 0)
 122     printf ("info: expecting failure for %s%%%s\n", address, scope);
 123   struct in6_addr addr = from_string (address);
 124   uint32_t result = 1234;
 125   if (__inet6_scopeid_pton (&addr, scope, &result) == 0)
 126     {
 127       support_record_failure ();
 128       printf ("error: unexpected success for %s%%%s\n",
 129               address, scope);
 130     }
 131   if (result != 1234)
 132     {
 133       support_record_failure ();
 134       printf ("error: unexpected result update for %s%%%s\n",
 135               address, scope);
 136     }
 137
 138   struct sockaddr_in6 sa;
 139   if (call_gai (AF_UNSPEC, address, scope, &sa))
 140     {
 141       support_record_failure ();
 142       printf ("error: unexpected getaddrinfo success for %s%%%s (AF_UNSPEC)\n",
 143               address, scope);
 144     }
 145   if (call_gai (AF_INET6, address, scope, &sa))
 146     {
 147       support_record_failure ();
 148       printf ("error: unexpected getaddrinfo success for %s%%%s (AF_INET6)\n",
 149               address, scope);
 150     }
 151 }
 152
 153 /* Check a single address were we expected a success.  */
 154 static void
 155 expect_success (const char *address, const char *scope, uint32_t expected)
 156 {
 157   if (test_verbose > 0)
 158     printf ("info: expecting success for %s%%%s\n", address, scope);
 159   struct in6_addr addr = from_string (address);
 160   uint32_t actual = expected + 1;
 161   if (__inet6_scopeid_pton (&addr, scope, &actual) != 0)
 162     {
 163       support_record_failure ();
 164       printf ("error: unexpected failure for %s%%%s\n",
 165               address, scope);
 166     }
 167   if (actual != expected)
 168     {
 169       support_record_failure ();
 170       printf ("error: unexpected result for for %s%%%s\n",
 171               address, scope);
 172       printf ("  expected: %" PRIu32 "\n", expected);
 173       printf ("  actual:   %" PRIu32 "\n", actual);
 174     }
 175
 176   struct sockaddr_in6 sa;
 177   memset (&sa, 0xc0, sizeof (sa));
 178   if (call_gai (AF_UNSPEC, address, scope, &sa))
 179     check_ai ("AF_UNSPEC", address, scope, &sa, &addr, expected);
 180   else
 181     {
 182       support_record_failure ();
 183       printf ("error: unexpected getaddrinfo failure for %s%%%s (AF_UNSPEC)\n",
 184               address, scope);
 185     }
 186   memset (&sa, 0xc0, sizeof (sa));
 187   if (call_gai (AF_INET6, address, scope, &sa))
 188     check_ai ("AF_INET6", address, scope, &sa, &addr, expected);
 189   else
 190     {
 191       support_record_failure ();
 192       printf ("error: unexpected getaddrinfo failure for %s%%%s (AF_INET6)\n",
 193               address, scope);
 194     }
 195 }
 196
 197 static int
 198 do_test (void)
 199 {
 200   setup_interface ();
 201
 202   static const char *test_addresses[]
 203     = { "::", "::1", "2001:db8::1", NULL };
 204   for (int i = 0; test_addresses[i] != NULL; ++i)
 205     {
 206       expect_success (test_addresses[i], "0", 0);
 207       expect_success (test_addresses[i], "5555", 5555);
 208
 209       expect_failure (test_addresses[i], "");
 210       expect_failure (test_addresses[i], "-1");
 211       expect_failure (test_addresses[i], "-99");
 212       expect_failure (test_addresses[i], "037777777777");
 213       expect_failure (test_addresses[i], "0x");
 214       expect_failure (test_addresses[i], "0x1");
 215     }
 216
 217   if (interface_name != NULL)
 218     {
 219       expect_success ("fe80::1", interface_name, interface_index);
 220       expect_success ("ff02::1", interface_name, interface_index);
 221       expect_success ("ff01::1", interface_name, interface_index);
 222       expect_failure ("::", interface_name);
 223       expect_failure ("::1", interface_name);
 224       expect_failure ("2001:db8::1", interface_name);
 225     }
 226
 227   return 0;
 228 }
 229
 230 #include <support/test-driver.c>