resolv/tst-resolv-ai_idn-common.c

   1 /* Common code for AI_IDN/NI_IDN tests.
   2    Copyright (C) 2018-2019 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    <http://www.gnu.org/licenses/>.  */
  18
  19 /* Before including this file, TEST_USE_UTF8 must be defined to 1 or
  20    0, depending on whether a UTF-8 locale is used or a Latin-1
  21    locale.  */
  22
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #include <string.h>
  26 #include <support/check.h>
  27 #include <support/check_nss.h>
  28 #include <support/resolv_test.h>
  29 #include <support/support.h>
  30
  31 /* Name of the shared object for libidn2.  */
  32 #define LIBIDN2_SONAME "libidn2.so.0"
  33
  34 #if TEST_USE_UTF8
  35 /* UTF-8 encoding of "nämchen" (German for “namelet”).  */
  36 # define NAEMCHEN "n\xC3\xA4mchen"
  37
  38 /* UTF-8 encoding of "שם" (Hebrew for “name”).  */
  39 # define SHEM "\xD7\xA9\xD7\x9D"
  40
  41 /* UTF-8 encoding of "buße" (German for “penance”).  This used to be
  42    encoded as "busse" (“busses”) in IDNA2003.  */
  43 # define BUSSE "bu\xC3\x9F""e"
  44
  45 #else
  46 /* Latin-1 encodings, as far as they are available.  */
  47
  48 # define NAEMCHEN "n\xE4mchen"
  49 # define BUSSE "bu\xDF""e"
  50
  51 #endif
  52
  53 /* IDNA encoding of NAEMCHEN.  */
  54 #define NAEMCHEN_IDNA "xn--nmchen-bua"
  55
  56 /* IDNA encoding of NAEMCHEN "_zwo".  */
  57 #define NAEMCHEN_ZWO_IDNA "xn--nmchen_zwo-q5a"
  58
  59 /* IDNA encoding of SHEM.  */
  60 #define SHEM_IDNA "xn--iebx"
  61
  62 /* IDNA encoding of BUSSE.  */
  63 #define BUSSE_IDNA "xn--bue-6ka"
  64
  65 /* IDNA encoding of "שם1".  */
  66 #define SHEM1_IDNA "xn--1-qic9a"
  67
  68 /* Another IDNA name.  */
  69 #define ANDERES_NAEMCHEN "anderes-" NAEMCHEN
  70 #define ANDERES_NAEMCHEN_IDNA "xn--anderes-nmchen-eib"
  71
  72 /* Controls the kind of test data in a PTR lookup response.  */
  73 enum gni_test
  74   {
  75     gni_non_idn_name,
  76     gni_non_idn_cname_to_non_idn_name,
  77     gni_non_idn_cname_to_idn_name,
  78     gni_idn_name,
  79     gni_idn_shem,
  80     gni_idn_shem1,
  81     gni_idn_cname_to_non_idn_name,
  82     gni_idn_cname_to_idn_name,
  83     gni_invalid_idn_1,
  84     gni_invalid_idn_2,
  85   };
  86
  87 /* Called from response below.  The LSB (first byte) controls what
  88    goes into the response, see enum gni_test.  */
  89 static void
  90 response_ptr (const struct resolv_response_context *ctx,
  91               struct resolv_response_builder *b, const char *qname)
  92 {
  93   int comp[4] = { 0 };
  94   TEST_COMPARE (sscanf (qname, "%d.%d.%d.%d.in-addr.arpa",
  95                         &comp[0], &comp[1], &comp[2], &comp[3]), 4);
  96   const char *next_name;
  97   switch ((enum gni_test) comp[0])
  98     {
  99     /* First name in response is non-IDN name.  */
 100     case gni_non_idn_name:
 101       resolv_response_open_record (b, qname, C_IN, T_PTR, 0);
 102       resolv_response_add_name (b, "non-idn.example");
 103       resolv_response_close_record (b);
 104       return;
 105     case gni_non_idn_cname_to_non_idn_name:
 106       resolv_response_open_record (b, qname, C_IN, T_CNAME, 0);
 107       next_name = "non-idn-cname.example";
 108       resolv_response_add_name (b, next_name);
 109       resolv_response_close_record (b);
 110       resolv_response_open_record (b, next_name, C_IN, T_PTR, 0);
 111       resolv_response_add_name (b, "non-idn-name.example");
 112       resolv_response_close_record (b);
 113       return;
 114     case gni_non_idn_cname_to_idn_name:
 115       resolv_response_open_record (b, qname, C_IN, T_CNAME, 0);
 116       next_name = "non-idn-cname.example";
 117       resolv_response_add_name (b, next_name);
 118       resolv_response_close_record (b);
 119       resolv_response_open_record (b, next_name, C_IN, T_PTR, 0);
 120       resolv_response_add_name (b, NAEMCHEN_IDNA ".example");
 121       resolv_response_close_record (b);
 122       return;
 123
 124     /* First name in response is IDN name.  */
 125     case gni_idn_name:
 126       resolv_response_open_record (b, qname, C_IN, T_PTR, 0);
 127       resolv_response_add_name (b, "xn--nmchen-bua.example");
 128       resolv_response_close_record (b);
 129       return;
 130     case gni_idn_shem:
 131       resolv_response_open_record (b, qname, C_IN, T_PTR, 0);
 132       resolv_response_add_name (b, SHEM_IDNA ".example");
 133       resolv_response_close_record (b);
 134       return;
 135     case gni_idn_shem1:
 136       resolv_response_open_record (b, qname, C_IN, T_PTR, 0);
 137       resolv_response_add_name (b, SHEM1_IDNA ".example");
 138       resolv_response_close_record (b);
 139       return;
 140     case gni_idn_cname_to_non_idn_name:
 141       resolv_response_open_record (b, qname, C_IN, T_CNAME, 0);
 142       next_name = NAEMCHEN_IDNA ".example";
 143       resolv_response_add_name (b, next_name);
 144       resolv_response_close_record (b);
 145       resolv_response_open_record (b, next_name, C_IN, T_PTR, 0);
 146       resolv_response_add_name (b, "non-idn-name.example");
 147       resolv_response_close_record (b);
 148       return;
 149     case gni_idn_cname_to_idn_name:
 150       resolv_response_open_record (b, qname, C_IN, T_CNAME, 0);
 151       next_name = NAEMCHEN_IDNA ".example";
 152       resolv_response_add_name (b, next_name);
 153       resolv_response_close_record (b);
 154       resolv_response_open_record (b, next_name, C_IN, T_PTR, 0);
 155       resolv_response_add_name (b, ANDERES_NAEMCHEN_IDNA ".example");
 156       resolv_response_close_record (b);
 157       return;
 158
 159     /* Invalid IDN encodings.  */
 160     case gni_invalid_idn_1:
 161       resolv_response_open_record (b, qname, C_IN, T_PTR, 0);
 162       resolv_response_add_name (b, "xn---.example");
 163       resolv_response_close_record (b);
 164       return;
 165     case gni_invalid_idn_2:
 166       resolv_response_open_record (b, qname, C_IN, T_PTR, 0);
 167       resolv_response_add_name (b, "xn--x.example");
 168       resolv_response_close_record (b);
 169       return;
 170     }
 171   FAIL_EXIT1 ("invalid PTR query: %s", qname);
 172 }
 173
 174 /* For PTR responses, see above.  A/AAAA queries can request
 175    additional CNAMEs in the response by include ".cname." and
 176    ".idn-cname." in the query.  The LSB in the address contains the
 177    first byte of the QNAME.  */
 178 static void
 179 response (const struct resolv_response_context *ctx,
 180           struct resolv_response_builder *b,
 181           const char *qname, uint16_t qclass, uint16_t qtype)
 182 {
 183   TEST_VERIFY_EXIT (qclass == C_IN);
 184
 185   for (const char *p = qname; *p != '\0'; ++p)
 186     if (!(('0' <= *p && *p <= '9')
 187           || ('a' <= *p && *p <= 'z')
 188           || ('A' <= *p && *p <= 'Z')
 189           || *p == '.' || *p == '-' || *p == '_'))
 190       {
 191         /* Non-ASCII query.  Reply with NXDOMAIN.  */
 192         struct resolv_response_flags flags = { .rcode = 3 };
 193         resolv_response_init (b, flags);
 194         resolv_response_add_question (b, qname, qclass, qtype);
 195         return;
 196       }
 197
 198   struct resolv_response_flags flags = { 0 };
 199   resolv_response_init (b, flags);
 200   resolv_response_add_question (b, qname, qclass, qtype);
 201   resolv_response_section (b, ns_s_an);
 202
 203   if (qtype == T_PTR)
 204     {
 205       response_ptr (ctx, b, qname);
 206       return;
 207     }
 208
 209   bool with_cname = strstr (qname, ".cname.") != NULL;
 210   bool with_idn_cname = strstr (qname, ".idn-cname.") != NULL;
 211
 212   const char *next_name = qname;
 213   if (with_cname)
 214     {
 215       next_name = "non-idn-cname.example";
 216       resolv_response_open_record (b, qname, C_IN, T_CNAME, 0);
 217       resolv_response_add_name (b, next_name);
 218       resolv_response_close_record (b);
 219     }
 220   if (with_idn_cname)
 221     {
 222       next_name = ANDERES_NAEMCHEN_IDNA ".example";
 223       resolv_response_open_record (b, qname, C_IN, T_CNAME, 0);
 224       resolv_response_add_name (b, next_name);
 225       resolv_response_close_record (b);
 226     }
 227
 228   resolv_response_open_record (b, next_name, C_IN, qtype, 0);
 229   switch (qtype)
 230     {
 231     case T_A:
 232       {
 233         char addr[4] = { 192, 0, 2, qname[0] };
 234         resolv_response_add_data (b, &addr, sizeof (addr));
 235       }
 236       break;
 237     case T_AAAA:
 238       {
 239         char addr[16]
 240           = { 0x20, 0x01, 0xd, 0xb8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 241               qname[0] };
 242         resolv_response_add_data (b, &addr, sizeof (addr));
 243       }
 244       break;
 245     default:
 246       FAIL_EXIT1 ("invalid qtype: %d", qtype);
 247     }
 248   resolv_response_close_record (b);
 249 }
 250
 251 /* Check the result of a getaddrinfo call.  */
 252 static void
 253 check_ai (const char *name, int ai_flags, const char *expected)
 254 {
 255   struct addrinfo hints =
 256     {
 257       .ai_flags = ai_flags,
 258       .ai_family = AF_INET,
 259       .ai_socktype = SOCK_STREAM,
 260     };
 261   struct addrinfo *ai;
 262   char *query = xasprintf ("%s:80 AF_INET/0x%x", name, ai_flags);
 263   int ret = getaddrinfo (name, "80", &hints, &ai);
 264   check_addrinfo (query, ai, ret, expected);
 265   if (ret == 0)
 266     freeaddrinfo (ai);
 267   free (query);
 268 }
 269
 270 /* Run one getnameinfo test.  FLAGS is automatically augmented with
 271    NI_NUMERICSERV.  */
 272 static void
 273 gni_test (enum gni_test code, unsigned int flags, const char *expected)
 274 {
 275   struct sockaddr_in sin =
 276     {
 277       .sin_family = AF_INET,
 278       .sin_port = htons (80),
 279       .sin_addr = { htonl (0xc0000200 | code) }, /* 192.0.2.0/24 network.  */
 280     };
 281   char host[1024];
 282   char service[1024];
 283   int ret = getnameinfo ((const struct sockaddr *) &sin, sizeof (sin),
 284                          host, sizeof (host), service, sizeof (service),
 285                          flags| NI_NUMERICSERV);
 286   if (ret != 0)
 287     {
 288       if (expected == NULL)
 289         TEST_COMPARE (ret, EAI_IDN_ENCODE);
 290       else
 291         {
 292           support_record_failure ();
 293           printf ("error: getnameinfo failed (code %d, flags 0x%x): %s (%d)\n",
 294                   (int) code, flags, gai_strerror (ret), ret);
 295         }
 296     }
 297   else if (ret == 0 && expected == NULL)
 298     {
 299       support_record_failure ();
 300       printf ("error: getnameinfo unexpected success (code %d, flags 0x%x)\n",
 301               (int) code, flags);
 302     }
 303   else if (strcmp (host, expected) != 0 || strcmp (service, "80") != 0)
 304     {
 305       support_record_failure ();
 306       printf ("error: getnameinfo test failure (code %d, flags 0x%x)\n"
 307               "  expected host:    \"%s\"\n"
 308               "  expected service: \"80\"\n"
 309               "  actual host:      \"%s\"\n"
 310               "  actual service:   \"%s\"\n",
 311               (int) code, flags, expected, host, service);
 312     }
 313 }
 314
 315 /* Tests for getaddrinfo which assume a working libidn2 library.  */
 316 __attribute__ ((unused))
 317 static void
 318 gai_tests_with_libidn2 (void)
 319 {
 320   /* No CNAME.  */
 321   check_ai ("non-idn.example", 0,
 322             "address: STREAM/TCP 192.0.2.110 80\n");
 323   check_ai ("non-idn.example", AI_IDN,
 324             "flags: AI_IDN\n"
 325             "address: STREAM/TCP 192.0.2.110 80\n");
 326   check_ai ("non-idn.example", AI_IDN | AI_CANONNAME | AI_CANONIDN,
 327             "flags: AI_CANONNAME AI_IDN AI_CANONIDN\n"
 328             "canonname: non-idn.example\n"
 329             "address: STREAM/TCP 192.0.2.110 80\n");
 330
 331   check_ai (NAEMCHEN ".example", 0,
 332             "error: Name or service not known\n");
 333   check_ai (NAEMCHEN ".example", AI_IDN,
 334             "flags: AI_IDN\n"
 335             "address: STREAM/TCP 192.0.2.120 80\n");
 336   check_ai (NAEMCHEN ".example", AI_IDN | AI_CANONNAME | AI_CANONIDN,
 337             "flags: AI_CANONNAME AI_IDN AI_CANONIDN\n"
 338             "canonname: " NAEMCHEN ".example\n"
 339             "address: STREAM/TCP 192.0.2.120 80\n");
 340
 341 #if TEST_USE_UTF8
 342   check_ai (SHEM ".example", 0,
 343             "error: Name or service not known\n");
 344   check_ai (SHEM ".example", AI_IDN,
 345             "flags: AI_IDN\n"
 346             "address: STREAM/TCP 192.0.2.120 80\n");
 347   check_ai (SHEM ".example", AI_IDN | AI_CANONNAME | AI_CANONIDN,
 348             "flags: AI_CANONNAME AI_IDN AI_CANONIDN\n"
 349             "canonname: " SHEM ".example\n"
 350             "address: STREAM/TCP 192.0.2.120 80\n");
 351   check_ai (SHEM ".example", AI_IDN | AI_CANONNAME,
 352             "flags: AI_CANONNAME AI_IDN\n"
 353             "canonname: " SHEM_IDNA ".example\n"
 354             "address: STREAM/TCP 192.0.2.120 80\n");
 355   check_ai (SHEM "1.example", AI_IDN,
 356             "flags: AI_IDN\n"
 357             "address: STREAM/TCP 192.0.2.120 80\n");
 358   check_ai (SHEM "1.example", AI_IDN | AI_CANONNAME | AI_CANONIDN,
 359             "flags: AI_CANONNAME AI_IDN AI_CANONIDN\n"
 360             "canonname: " SHEM "1.example\n"
 361             "address: STREAM/TCP 192.0.2.120 80\n");
 362   check_ai (SHEM "1.example", AI_IDN | AI_CANONNAME,
 363             "flags: AI_CANONNAME AI_IDN\n"
 364             "canonname: " SHEM1_IDNA ".example\n"
 365             "address: STREAM/TCP 192.0.2.120 80\n");
 366 #endif
 367
 368   /* Check that non-transitional mode is active.  German sharp S
 369      should not turn into SS.  */
 370   check_ai (BUSSE ".example", 0,
 371             "error: Name or service not known\n");
 372   check_ai (BUSSE ".example", AI_IDN,
 373             "flags: AI_IDN\n"
 374             "address: STREAM/TCP 192.0.2.120 80\n");
 375   check_ai (BUSSE ".example", AI_IDN | AI_CANONNAME,
 376             "flags: AI_CANONNAME AI_IDN\n"
 377             "canonname: " BUSSE_IDNA ".example\n"
 378             "address: STREAM/TCP 192.0.2.120 80\n");
 379   check_ai (BUSSE ".example", AI_IDN | AI_CANONNAME | AI_CANONIDN,
 380             "flags: AI_CANONNAME AI_IDN AI_CANONIDN\n"
 381             "canonname: " BUSSE ".example\n"
 382             "address: STREAM/TCP 192.0.2.120 80\n");
 383
 384   /* Check that Unicode TR 46 mode is active.  Underscores should be
 385      permitted in IDNA components.  */
 386   check_ai (NAEMCHEN "_zwo.example", 0,
 387             "error: Name or service not known\n");
 388   check_ai (NAEMCHEN "_zwo.example", AI_IDN,
 389             "flags: AI_IDN\n"
 390             "address: STREAM/TCP 192.0.2.120 80\n");
 391   check_ai (NAEMCHEN "_zwo.example", AI_IDN | AI_CANONNAME,
 392             "flags: AI_CANONNAME AI_IDN\n"
 393             "canonname: " NAEMCHEN_ZWO_IDNA ".example\n"
 394             "address: STREAM/TCP 192.0.2.120 80\n");
 395   check_ai (NAEMCHEN "_zwo.example", AI_IDN | AI_CANONNAME | AI_CANONIDN,
 396             "flags: AI_CANONNAME AI_IDN AI_CANONIDN\n"
 397             "canonname: " NAEMCHEN "_zwo.example\n"
 398             "address: STREAM/TCP 192.0.2.120 80\n");
 399
 400   /* No CNAME, but already IDN-encoded.  */
 401   check_ai (NAEMCHEN_IDNA ".example", 0,
 402             "address: STREAM/TCP 192.0.2.120 80\n");
 403   check_ai (NAEMCHEN_IDNA ".example", AI_IDN,
 404             "flags: AI_IDN\n"
 405             "address: STREAM/TCP 192.0.2.120 80\n");
 406   check_ai (NAEMCHEN_IDNA ".example", AI_IDN | AI_CANONNAME,
 407             "flags: AI_CANONNAME AI_IDN\n"
 408             "canonname: " NAEMCHEN_IDNA ".example\n"
 409             "address: STREAM/TCP 192.0.2.120 80\n");
 410   check_ai (NAEMCHEN_IDNA ".example", AI_IDN | AI_CANONNAME | AI_CANONIDN,
 411             "flags: AI_CANONNAME AI_IDN AI_CANONIDN\n"
 412             "canonname: " NAEMCHEN ".example\n"
 413             "address: STREAM/TCP 192.0.2.120 80\n");
 414   check_ai (SHEM_IDNA ".example", 0,
 415             "address: STREAM/TCP 192.0.2.120 80\n");
 416   check_ai (SHEM_IDNA ".example", AI_IDN,
 417             "flags: AI_IDN\n"
 418             "address: STREAM/TCP 192.0.2.120 80\n");
 419   check_ai (SHEM_IDNA ".example", AI_IDN | AI_CANONNAME,
 420             "flags: AI_CANONNAME AI_IDN\n"
 421             "canonname: " SHEM_IDNA ".example\n"
 422             "address: STREAM/TCP 192.0.2.120 80\n");
 423 #if TEST_USE_UTF8
 424   check_ai (SHEM_IDNA ".example", AI_IDN | AI_CANONNAME | AI_CANONIDN,
 425             "flags: AI_CANONNAME AI_IDN AI_CANONIDN\n"
 426             "canonname: " SHEM ".example\n"
 427             "address: STREAM/TCP 192.0.2.120 80\n");
 428 #else
 429   check_ai (SHEM_IDNA ".example", AI_IDN | AI_CANONNAME | AI_CANONIDN,
 430             "flags: AI_CANONNAME AI_IDN AI_CANONIDN\n"
 431             "canonname: " SHEM_IDNA ".example\n"
 432             "address: STREAM/TCP 192.0.2.120 80\n");
 433 #endif
 434
 435   /* Invalid IDNA canonical name is returned as-is.  */
 436   check_ai ("xn---.example", AI_CANONNAME | AI_CANONIDN,
 437             "flags: AI_CANONNAME AI_CANONIDN\n"
 438             "canonname: xn---.example\n"
 439             "address: STREAM/TCP 192.0.2.120 80\n");
 440
 441   /* Non-IDN CNAME.  */
 442   check_ai ("with.cname.example", 0,
 443             "address: STREAM/TCP 192.0.2.119 80\n");
 444   check_ai ("with.cname.example", AI_IDN,
 445             "flags: AI_IDN\n"
 446             "address: STREAM/TCP 192.0.2.119 80\n");
 447   check_ai ("with.cname.example", AI_IDN | AI_CANONNAME | AI_CANONIDN,
 448             "flags: AI_CANONNAME AI_IDN AI_CANONIDN\n"
 449             "canonname: non-idn-cname.example\n"
 450             "address: STREAM/TCP 192.0.2.119 80\n");
 451
 452   check_ai ("with.cname." NAEMCHEN ".example", 0,
 453             "error: Name or service not known\n");
 454   check_ai ("with.cname." NAEMCHEN ".example", AI_IDN,
 455             "flags: AI_IDN\n"
 456             "address: STREAM/TCP 192.0.2.119 80\n");
 457   check_ai ("with.cname." NAEMCHEN ".example", AI_IDN | AI_CANONNAME,
 458             "flags: AI_CANONNAME AI_IDN\n"
 459             "canonname: non-idn-cname.example\n"
 460             "address: STREAM/TCP 192.0.2.119 80\n");
 461   check_ai ("with.cname." NAEMCHEN ".example",
 462             AI_IDN | AI_CANONNAME | AI_CANONIDN,
 463             "flags: AI_CANONNAME AI_IDN AI_CANONIDN\n"
 464             "canonname: non-idn-cname.example\n"
 465             "address: STREAM/TCP 192.0.2.119 80\n");
 466
 467   /* IDN CNAME.  */
 468   check_ai ("With.idn-cname.example", 0,
 469             "address: STREAM/TCP 192.0.2.87 80\n");
 470   check_ai ("With.idn-cname.example", AI_IDN,
 471             "flags: AI_IDN\n"
 472             "address: STREAM/TCP 192.0.2.87 80\n");
 473   check_ai ("With.idn-cname.example", AI_IDN | AI_CANONNAME,
 474             "flags: AI_CANONNAME AI_IDN\n"
 475             "canonname: " ANDERES_NAEMCHEN_IDNA ".example\n"
 476             "address: STREAM/TCP 192.0.2.87 80\n");
 477   check_ai ("With.idn-cname.example",
 478             AI_IDN | AI_CANONNAME | AI_CANONIDN,
 479             "flags: AI_CANONNAME AI_IDN AI_CANONIDN\n"
 480             "canonname: " ANDERES_NAEMCHEN ".example\n"
 481             "address: STREAM/TCP 192.0.2.87 80\n");
 482
 483   check_ai ("With.idn-cname." NAEMCHEN ".example", 0,
 484             "error: Name or service not known\n");
 485   check_ai ("With.idn-cname." NAEMCHEN ".example", AI_IDN,
 486             "flags: AI_IDN\n"
 487             "address: STREAM/TCP 192.0.2.119 80\n");
 488   check_ai ("With.idn-cname." NAEMCHEN ".example", AI_IDN | AI_CANONNAME,
 489             "flags: AI_CANONNAME AI_IDN\n"
 490             "canonname: " ANDERES_NAEMCHEN_IDNA ".example\n"
 491             "address: STREAM/TCP 192.0.2.119 80\n");
 492   check_ai ("With.idn-cname." NAEMCHEN ".example",
 493             AI_IDN | AI_CANONNAME | AI_CANONIDN,
 494             "flags: AI_CANONNAME AI_IDN AI_CANONIDN\n"
 495             "canonname: " ANDERES_NAEMCHEN ".example\n"
 496             "address: STREAM/TCP 192.0.2.119 80\n");
 497
 498   /* Non-IDN to IDN CNAME chain.  */
 499   check_ai ("both.cname.idn-cname.example", 0,
 500             "address: STREAM/TCP 192.0.2.98 80\n");
 501   check_ai ("both.cname.idn-cname.example", AI_IDN,
 502             "flags: AI_IDN\n"
 503             "address: STREAM/TCP 192.0.2.98 80\n");
 504   check_ai ("both.cname.idn-cname.example", AI_IDN | AI_CANONNAME,
 505             "flags: AI_CANONNAME AI_IDN\n"
 506             "canonname: " ANDERES_NAEMCHEN_IDNA ".example\n"
 507             "address: STREAM/TCP 192.0.2.98 80\n");
 508   check_ai ("both.cname.idn-cname.example",
 509             AI_IDN | AI_CANONNAME | AI_CANONIDN,
 510             "flags: AI_CANONNAME AI_IDN AI_CANONIDN\n"
 511             "canonname: " ANDERES_NAEMCHEN ".example\n"
 512             "address: STREAM/TCP 192.0.2.98 80\n");
 513
 514   check_ai ("both.cname.idn-cname." NAEMCHEN ".example", 0,
 515             "error: Name or service not known\n");
 516   check_ai ("both.cname.idn-cname." NAEMCHEN ".example", AI_IDN,
 517             "flags: AI_IDN\n"
 518             "address: STREAM/TCP 192.0.2.98 80\n");
 519   check_ai ("both.cname.idn-cname." NAEMCHEN ".example",
 520             AI_IDN | AI_CANONNAME,
 521             "flags: AI_CANONNAME AI_IDN\n"
 522             "canonname: " ANDERES_NAEMCHEN_IDNA ".example\n"
 523             "address: STREAM/TCP 192.0.2.98 80\n");
 524   check_ai ("both.cname.idn-cname." NAEMCHEN ".example",
 525             AI_IDN | AI_CANONNAME | AI_CANONIDN,
 526             "flags: AI_CANONNAME AI_IDN AI_CANONIDN\n"
 527             "canonname: " ANDERES_NAEMCHEN ".example\n"
 528             "address: STREAM/TCP 192.0.2.98 80\n");
 529 }
 530
 531 /* Tests for getnameinfo which assume a working libidn2 library.  */
 532 __attribute__ ((unused))
 533 static void
 534 gni_tests_with_libidn2 (void)
 535 {
 536   gni_test (gni_non_idn_name, 0, "non-idn.example");
 537   gni_test (gni_non_idn_name, NI_IDN, "non-idn.example");
 538   gni_test (gni_non_idn_name, NI_NUMERICHOST, "192.0.2.0");
 539   gni_test (gni_non_idn_name, NI_NUMERICHOST | NI_IDN, "192.0.2.0");
 540
 541   gni_test (gni_non_idn_cname_to_non_idn_name, 0, "non-idn-name.example");
 542   gni_test (gni_non_idn_cname_to_non_idn_name, NI_IDN, "non-idn-name.example");
 543
 544   gni_test (gni_non_idn_cname_to_idn_name, 0, NAEMCHEN_IDNA ".example");
 545   gni_test (gni_non_idn_cname_to_idn_name, NI_IDN, NAEMCHEN ".example");
 546
 547   gni_test (gni_idn_name, 0, NAEMCHEN_IDNA ".example");
 548   gni_test (gni_idn_name, NI_IDN, NAEMCHEN ".example");
 549   gni_test (gni_idn_shem, 0, SHEM_IDNA ".example");
 550   gni_test (gni_idn_shem1, 0, SHEM1_IDNA ".example");
 551 #if TEST_USE_UTF8
 552   gni_test (gni_idn_shem, NI_IDN, SHEM ".example");
 553   gni_test (gni_idn_shem1, NI_IDN, SHEM "1.example");
 554 #else
 555   gni_test (gni_idn_shem, NI_IDN, SHEM_IDNA ".example");
 556   gni_test (gni_idn_shem1, NI_IDN, SHEM1_IDNA ".example");
 557 #endif
 558
 559   gni_test (gni_idn_cname_to_non_idn_name, 0, "non-idn-name.example");
 560   gni_test (gni_idn_cname_to_non_idn_name, NI_IDN, "non-idn-name.example");
 561
 562   gni_test (gni_idn_cname_to_idn_name, 0, ANDERES_NAEMCHEN_IDNA ".example");
 563   gni_test (gni_idn_cname_to_idn_name, NI_IDN, ANDERES_NAEMCHEN ".example");
 564
 565   /* Test encoding errors.  */
 566   gni_test (gni_invalid_idn_1, 0, "xn---.example");
 567   gni_test (gni_invalid_idn_1, NI_IDN, "xn---.example");
 568   gni_test (gni_invalid_idn_2, 0, "xn--x.example");
 569   gni_test (gni_invalid_idn_2, NI_IDN, "xn--x.example");
 570 }