resolv/tst-resolv-trailing.c

   1 /* Test name resolution behavior with trailing characters.
   2    Copyright (C) 2019-2021 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 <array_length.h>
  20 #include <netdb.h>
  21 #include <support/check.h>
  22 #include <support/check_nss.h>
  23 #include <support/resolv_test.h>
  24 #include <support/support.h>
  25
  26 static void
  27 response (const struct resolv_response_context *ctx,
  28           struct resolv_response_builder *b,
  29           const char *qname, uint16_t qclass, uint16_t qtype)
  30 {
  31   /* The tests are not supposed send any DNS queries.  */
  32   FAIL_EXIT1 ("unexpected DNS query for %s/%d/%d", qname, qclass, qtype);
  33 }
  34
  35 static int
  36 do_test (void)
  37 {
  38   struct resolv_test *aux = resolv_test_start
  39     ((struct resolv_redirect_config)
  40      {
  41        .response_callback = response,
  42      });
  43
  44   static const char *const queries[] =
  45     {
  46      "192.0.2.1 ",
  47      "192.0.2.2\t",
  48      "192.0.2.3\n",
  49      "192.0.2.4 X",
  50      "192.0.2.5\tY",
  51      "192.0.2.6\nZ",
  52      "192.0.2. ",
  53      "192.0.2.\t",
  54      "192.0.2.\n",
  55      "192.0.2. X",
  56      "192.0.2.\tY",
  57      "192.0.2.\nZ",
  58      "2001:db8::1 ",
  59      "2001:db8::2\t",
  60      "2001:db8::3\n",
  61      "2001:db8::4 X",
  62      "2001:db8::5\tY",
  63      "2001:db8::6\nZ",
  64     };
  65   for (size_t query_idx = 0; query_idx < array_length (queries); ++query_idx)
  66     {
  67       const char *query = queries[query_idx];
  68       struct hostent storage;
  69       char buf[4096];
  70       struct hostent *e;
  71
  72       h_errno = 0;
  73       TEST_VERIFY (gethostbyname (query) == NULL);
  74       TEST_COMPARE (h_errno, HOST_NOT_FOUND);
  75
  76       h_errno = 0;
  77       e = NULL;
  78       TEST_COMPARE (gethostbyname_r (query, &storage, buf, sizeof (buf),
  79                                      &e, &h_errno), 0);
  80       TEST_VERIFY (e == NULL);
  81       TEST_COMPARE (h_errno, HOST_NOT_FOUND);
  82
  83       h_errno = 0;
  84       TEST_VERIFY (gethostbyname2 (query, AF_INET) == NULL);
  85       TEST_COMPARE (h_errno, HOST_NOT_FOUND);
  86
  87       h_errno = 0;
  88       e = NULL;
  89       TEST_COMPARE (gethostbyname2_r (query, AF_INET,
  90                                       &storage, buf, sizeof (buf),
  91                                      &e, &h_errno), 0);
  92       TEST_VERIFY (e == NULL);
  93       TEST_COMPARE (h_errno, HOST_NOT_FOUND);
  94
  95       h_errno = 0;
  96       TEST_VERIFY (gethostbyname2 (query, AF_INET6) == NULL);
  97       TEST_COMPARE (h_errno, HOST_NOT_FOUND);
  98
  99       h_errno = 0;
 100       e = NULL;
 101       TEST_COMPARE (gethostbyname2_r (query, AF_INET6,
 102                                       &storage, buf, sizeof (buf),
 103                                      &e, &h_errno), 0);
 104       TEST_VERIFY (e == NULL);
 105       TEST_COMPARE (h_errno, HOST_NOT_FOUND);
 106
 107       static const int gai_flags[] =
 108         {
 109          0,
 110          AI_ADDRCONFIG,
 111          AI_NUMERICHOST,
 112          AI_IDN,
 113          AI_IDN | AI_NUMERICHOST,
 114          AI_V4MAPPED,
 115          AI_V4MAPPED | AI_NUMERICHOST,
 116         };
 117       for (size_t gai_flags_idx; gai_flags_idx < array_length (gai_flags);
 118              ++gai_flags_idx)
 119         {
 120           struct addrinfo hints = { .ai_flags = gai_flags[gai_flags_idx], };
 121           struct addrinfo *ai;
 122           hints.ai_family = AF_INET;
 123           TEST_COMPARE (getaddrinfo (query, "80", &hints, &ai), EAI_NONAME);
 124           hints.ai_family = AF_INET6;
 125           TEST_COMPARE (getaddrinfo (query, "80", &hints, &ai), EAI_NONAME);
 126           hints.ai_family = AF_UNSPEC;
 127           TEST_COMPARE (getaddrinfo (query, "80", &hints, &ai), EAI_NONAME);
 128         }
 129     };
 130
 131   resolv_test_end (aux);
 132
 133   return 0;
 134 }
 135
 136 #include <support/test-driver.c>