glibc/resolv/tst-resolv-ai_idn-common.c
Florian Weimer d4e209d355 resolv: Fix CNAME chaining in resolv/tst-resolv-ai_idn-common.c
The second CNAME record optionally generated by the response function
used the question name, not the redirected name from the first CNAME.
This breaks the chain and results in failures of these IDNA tests if
CNAME owner names are checked as expected (which the current
implementation does not do).
2020-02-07 18:48:04 +01:00

572 lines
21 KiB
C

/* Common code for AI_IDN/NI_IDN tests.
Copyright (C) 2018-2020 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
/* Before including this file, TEST_USE_UTF8 must be defined to 1 or
0, depending on whether a UTF-8 locale is used or a Latin-1
locale. */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <support/check.h>
#include <support/check_nss.h>
#include <support/resolv_test.h>
#include <support/support.h>
/* Name of the shared object for libidn2. */
#define LIBIDN2_SONAME "libidn2.so.0"
#if TEST_USE_UTF8
/* UTF-8 encoding of "nämchen" (German for “namelet”). */
# define NAEMCHEN "n\xC3\xA4mchen"
/* UTF-8 encoding of "שם" (Hebrew for “name”). */
# define SHEM "\xD7\xA9\xD7\x9D"
/* UTF-8 encoding of "buße" (German for “penance”). This used to be
encoded as "busse" (“busses”) in IDNA2003. */
# define BUSSE "bu\xC3\x9F""e"
#else
/* Latin-1 encodings, as far as they are available. */
# define NAEMCHEN "n\xE4mchen"
# define BUSSE "bu\xDF""e"
#endif
/* IDNA encoding of NAEMCHEN. */
#define NAEMCHEN_IDNA "xn--nmchen-bua"
/* IDNA encoding of NAEMCHEN "_zwo". */
#define NAEMCHEN_ZWO_IDNA "xn--nmchen_zwo-q5a"
/* IDNA encoding of SHEM. */
#define SHEM_IDNA "xn--iebx"
/* IDNA encoding of BUSSE. */
#define BUSSE_IDNA "xn--bue-6ka"
/* IDNA encoding of "שם1". */
#define SHEM1_IDNA "xn--1-qic9a"
/* Another IDNA name. */
#define ANDERES_NAEMCHEN "anderes-" NAEMCHEN
#define ANDERES_NAEMCHEN_IDNA "xn--anderes-nmchen-eib"
/* Controls the kind of test data in a PTR lookup response. */
enum gni_test
{
gni_non_idn_name,
gni_non_idn_cname_to_non_idn_name,
gni_non_idn_cname_to_idn_name,
gni_idn_name,
gni_idn_shem,
gni_idn_shem1,
gni_idn_cname_to_non_idn_name,
gni_idn_cname_to_idn_name,
gni_invalid_idn_1,
gni_invalid_idn_2,
};
/* Called from response below. The LSB (first byte) controls what
goes into the response, see enum gni_test. */
static void
response_ptr (const struct resolv_response_context *ctx,
struct resolv_response_builder *b, const char *qname)
{
int comp[4] = { 0 };
TEST_COMPARE (sscanf (qname, "%d.%d.%d.%d.in-addr.arpa",
&comp[0], &comp[1], &comp[2], &comp[3]), 4);
const char *next_name;
switch ((enum gni_test) comp[0])
{
/* First name in response is non-IDN name. */
case gni_non_idn_name:
resolv_response_open_record (b, qname, C_IN, T_PTR, 0);
resolv_response_add_name (b, "non-idn.example");
resolv_response_close_record (b);
return;
case gni_non_idn_cname_to_non_idn_name:
resolv_response_open_record (b, qname, C_IN, T_CNAME, 0);
next_name = "non-idn-cname.example";
resolv_response_add_name (b, next_name);
resolv_response_close_record (b);
resolv_response_open_record (b, next_name, C_IN, T_PTR, 0);
resolv_response_add_name (b, "non-idn-name.example");
resolv_response_close_record (b);
return;
case gni_non_idn_cname_to_idn_name:
resolv_response_open_record (b, qname, C_IN, T_CNAME, 0);
next_name = "non-idn-cname.example";
resolv_response_add_name (b, next_name);
resolv_response_close_record (b);
resolv_response_open_record (b, next_name, C_IN, T_PTR, 0);
resolv_response_add_name (b, NAEMCHEN_IDNA ".example");
resolv_response_close_record (b);
return;
/* First name in response is IDN name. */
case gni_idn_name:
resolv_response_open_record (b, qname, C_IN, T_PTR, 0);
resolv_response_add_name (b, "xn--nmchen-bua.example");
resolv_response_close_record (b);
return;
case gni_idn_shem:
resolv_response_open_record (b, qname, C_IN, T_PTR, 0);
resolv_response_add_name (b, SHEM_IDNA ".example");
resolv_response_close_record (b);
return;
case gni_idn_shem1:
resolv_response_open_record (b, qname, C_IN, T_PTR, 0);
resolv_response_add_name (b, SHEM1_IDNA ".example");
resolv_response_close_record (b);
return;
case gni_idn_cname_to_non_idn_name:
resolv_response_open_record (b, qname, C_IN, T_CNAME, 0);
next_name = NAEMCHEN_IDNA ".example";
resolv_response_add_name (b, next_name);
resolv_response_close_record (b);
resolv_response_open_record (b, next_name, C_IN, T_PTR, 0);
resolv_response_add_name (b, "non-idn-name.example");
resolv_response_close_record (b);
return;
case gni_idn_cname_to_idn_name:
resolv_response_open_record (b, qname, C_IN, T_CNAME, 0);
next_name = NAEMCHEN_IDNA ".example";
resolv_response_add_name (b, next_name);
resolv_response_close_record (b);
resolv_response_open_record (b, next_name, C_IN, T_PTR, 0);
resolv_response_add_name (b, ANDERES_NAEMCHEN_IDNA ".example");
resolv_response_close_record (b);
return;
/* Invalid IDN encodings. */
case gni_invalid_idn_1:
resolv_response_open_record (b, qname, C_IN, T_PTR, 0);
resolv_response_add_name (b, "xn---.example");
resolv_response_close_record (b);
return;
case gni_invalid_idn_2:
resolv_response_open_record (b, qname, C_IN, T_PTR, 0);
resolv_response_add_name (b, "xn--x.example");
resolv_response_close_record (b);
return;
}
FAIL_EXIT1 ("invalid PTR query: %s", qname);
}
/* For PTR responses, see above. A/AAAA queries can request
additional CNAMEs in the response by include ".cname." and
".idn-cname." in the query. The LSB in the address contains the
first byte of the QNAME. */
static void
response (const struct resolv_response_context *ctx,
struct resolv_response_builder *b,
const char *qname, uint16_t qclass, uint16_t qtype)
{
TEST_VERIFY_EXIT (qclass == C_IN);
for (const char *p = qname; *p != '\0'; ++p)
if (!(('0' <= *p && *p <= '9')
|| ('a' <= *p && *p <= 'z')
|| ('A' <= *p && *p <= 'Z')
|| *p == '.' || *p == '-' || *p == '_'))
{
/* Non-ASCII query. Reply with NXDOMAIN. */
struct resolv_response_flags flags = { .rcode = 3 };
resolv_response_init (b, flags);
resolv_response_add_question (b, qname, qclass, qtype);
return;
}
struct resolv_response_flags flags = { 0 };
resolv_response_init (b, flags);
resolv_response_add_question (b, qname, qclass, qtype);
resolv_response_section (b, ns_s_an);
if (qtype == T_PTR)
{
response_ptr (ctx, b, qname);
return;
}
bool with_cname = strstr (qname, ".cname.") != NULL;
bool with_idn_cname = strstr (qname, ".idn-cname.") != NULL;
const char *next_name = qname;
if (with_cname)
{
next_name = "non-idn-cname.example";
resolv_response_open_record (b, qname, C_IN, T_CNAME, 0);
resolv_response_add_name (b, next_name);
resolv_response_close_record (b);
}
if (with_idn_cname)
{
const char *previous_name = next_name;
next_name = ANDERES_NAEMCHEN_IDNA ".example";
resolv_response_open_record (b, previous_name, C_IN, T_CNAME, 0);
resolv_response_add_name (b, next_name);
resolv_response_close_record (b);
}
resolv_response_open_record (b, next_name, C_IN, qtype, 0);
switch (qtype)
{
case T_A:
{
char addr[4] = { 192, 0, 2, qname[0] };
resolv_response_add_data (b, &addr, sizeof (addr));
}
break;
case T_AAAA:
{
char addr[16]
= { 0x20, 0x01, 0xd, 0xb8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
qname[0] };
resolv_response_add_data (b, &addr, sizeof (addr));
}
break;
default:
FAIL_EXIT1 ("invalid qtype: %d", qtype);
}
resolv_response_close_record (b);
}
/* Check the result of a getaddrinfo call. */
static void
check_ai (const char *name, int ai_flags, const char *expected)
{
struct addrinfo hints =
{
.ai_flags = ai_flags,
.ai_family = AF_INET,
.ai_socktype = SOCK_STREAM,
};
struct addrinfo *ai;
char *query = xasprintf ("%s:80 AF_INET/0x%x", name, ai_flags);
int ret = getaddrinfo (name, "80", &hints, &ai);
check_addrinfo (query, ai, ret, expected);
if (ret == 0)
freeaddrinfo (ai);
free (query);
}
/* Run one getnameinfo test. FLAGS is automatically augmented with
NI_NUMERICSERV. */
static void
gni_test (enum gni_test code, unsigned int flags, const char *expected)
{
struct sockaddr_in sin =
{
.sin_family = AF_INET,
.sin_port = htons (80),
.sin_addr = { htonl (0xc0000200 | code) }, /* 192.0.2.0/24 network. */
};
char host[1024];
char service[1024];
int ret = getnameinfo ((const struct sockaddr *) &sin, sizeof (sin),
host, sizeof (host), service, sizeof (service),
flags| NI_NUMERICSERV);
if (ret != 0)
{
if (expected == NULL)
TEST_COMPARE (ret, EAI_IDN_ENCODE);
else
{
support_record_failure ();
printf ("error: getnameinfo failed (code %d, flags 0x%x): %s (%d)\n",
(int) code, flags, gai_strerror (ret), ret);
}
}
else if (ret == 0 && expected == NULL)
{
support_record_failure ();
printf ("error: getnameinfo unexpected success (code %d, flags 0x%x)\n",
(int) code, flags);
}
else if (strcmp (host, expected) != 0 || strcmp (service, "80") != 0)
{
support_record_failure ();
printf ("error: getnameinfo test failure (code %d, flags 0x%x)\n"
" expected host: \"%s\"\n"
" expected service: \"80\"\n"
" actual host: \"%s\"\n"
" actual service: \"%s\"\n",
(int) code, flags, expected, host, service);
}
}
/* Tests for getaddrinfo which assume a working libidn2 library. */
__attribute__ ((unused))
static void
gai_tests_with_libidn2 (void)
{
/* No CNAME. */
check_ai ("non-idn.example", 0,
"address: STREAM/TCP 192.0.2.110 80\n");
check_ai ("non-idn.example", AI_IDN,
"flags: AI_IDN\n"
"address: STREAM/TCP 192.0.2.110 80\n");
check_ai ("non-idn.example", AI_IDN | AI_CANONNAME | AI_CANONIDN,
"flags: AI_CANONNAME AI_IDN AI_CANONIDN\n"
"canonname: non-idn.example\n"
"address: STREAM/TCP 192.0.2.110 80\n");
check_ai (NAEMCHEN ".example", 0,
"error: Name or service not known\n");
check_ai (NAEMCHEN ".example", AI_IDN,
"flags: AI_IDN\n"
"address: STREAM/TCP 192.0.2.120 80\n");
check_ai (NAEMCHEN ".example", AI_IDN | AI_CANONNAME | AI_CANONIDN,
"flags: AI_CANONNAME AI_IDN AI_CANONIDN\n"
"canonname: " NAEMCHEN ".example\n"
"address: STREAM/TCP 192.0.2.120 80\n");
#if TEST_USE_UTF8
check_ai (SHEM ".example", 0,
"error: Name or service not known\n");
check_ai (SHEM ".example", AI_IDN,
"flags: AI_IDN\n"
"address: STREAM/TCP 192.0.2.120 80\n");
check_ai (SHEM ".example", AI_IDN | AI_CANONNAME | AI_CANONIDN,
"flags: AI_CANONNAME AI_IDN AI_CANONIDN\n"
"canonname: " SHEM ".example\n"
"address: STREAM/TCP 192.0.2.120 80\n");
check_ai (SHEM ".example", AI_IDN | AI_CANONNAME,
"flags: AI_CANONNAME AI_IDN\n"
"canonname: " SHEM_IDNA ".example\n"
"address: STREAM/TCP 192.0.2.120 80\n");
check_ai (SHEM "1.example", AI_IDN,
"flags: AI_IDN\n"
"address: STREAM/TCP 192.0.2.120 80\n");
check_ai (SHEM "1.example", AI_IDN | AI_CANONNAME | AI_CANONIDN,
"flags: AI_CANONNAME AI_IDN AI_CANONIDN\n"
"canonname: " SHEM "1.example\n"
"address: STREAM/TCP 192.0.2.120 80\n");
check_ai (SHEM "1.example", AI_IDN | AI_CANONNAME,
"flags: AI_CANONNAME AI_IDN\n"
"canonname: " SHEM1_IDNA ".example\n"
"address: STREAM/TCP 192.0.2.120 80\n");
#endif
/* Check that non-transitional mode is active. German sharp S
should not turn into SS. */
check_ai (BUSSE ".example", 0,
"error: Name or service not known\n");
check_ai (BUSSE ".example", AI_IDN,
"flags: AI_IDN\n"
"address: STREAM/TCP 192.0.2.120 80\n");
check_ai (BUSSE ".example", AI_IDN | AI_CANONNAME,
"flags: AI_CANONNAME AI_IDN\n"
"canonname: " BUSSE_IDNA ".example\n"
"address: STREAM/TCP 192.0.2.120 80\n");
check_ai (BUSSE ".example", AI_IDN | AI_CANONNAME | AI_CANONIDN,
"flags: AI_CANONNAME AI_IDN AI_CANONIDN\n"
"canonname: " BUSSE ".example\n"
"address: STREAM/TCP 192.0.2.120 80\n");
/* Check that Unicode TR 46 mode is active. Underscores should be
permitted in IDNA components. */
check_ai (NAEMCHEN "_zwo.example", 0,
"error: Name or service not known\n");
check_ai (NAEMCHEN "_zwo.example", AI_IDN,
"flags: AI_IDN\n"
"address: STREAM/TCP 192.0.2.120 80\n");
check_ai (NAEMCHEN "_zwo.example", AI_IDN | AI_CANONNAME,
"flags: AI_CANONNAME AI_IDN\n"
"canonname: " NAEMCHEN_ZWO_IDNA ".example\n"
"address: STREAM/TCP 192.0.2.120 80\n");
check_ai (NAEMCHEN "_zwo.example", AI_IDN | AI_CANONNAME | AI_CANONIDN,
"flags: AI_CANONNAME AI_IDN AI_CANONIDN\n"
"canonname: " NAEMCHEN "_zwo.example\n"
"address: STREAM/TCP 192.0.2.120 80\n");
/* No CNAME, but already IDN-encoded. */
check_ai (NAEMCHEN_IDNA ".example", 0,
"address: STREAM/TCP 192.0.2.120 80\n");
check_ai (NAEMCHEN_IDNA ".example", AI_IDN,
"flags: AI_IDN\n"
"address: STREAM/TCP 192.0.2.120 80\n");
check_ai (NAEMCHEN_IDNA ".example", AI_IDN | AI_CANONNAME,
"flags: AI_CANONNAME AI_IDN\n"
"canonname: " NAEMCHEN_IDNA ".example\n"
"address: STREAM/TCP 192.0.2.120 80\n");
check_ai (NAEMCHEN_IDNA ".example", AI_IDN | AI_CANONNAME | AI_CANONIDN,
"flags: AI_CANONNAME AI_IDN AI_CANONIDN\n"
"canonname: " NAEMCHEN ".example\n"
"address: STREAM/TCP 192.0.2.120 80\n");
check_ai (SHEM_IDNA ".example", 0,
"address: STREAM/TCP 192.0.2.120 80\n");
check_ai (SHEM_IDNA ".example", AI_IDN,
"flags: AI_IDN\n"
"address: STREAM/TCP 192.0.2.120 80\n");
check_ai (SHEM_IDNA ".example", AI_IDN | AI_CANONNAME,
"flags: AI_CANONNAME AI_IDN\n"
"canonname: " SHEM_IDNA ".example\n"
"address: STREAM/TCP 192.0.2.120 80\n");
#if TEST_USE_UTF8
check_ai (SHEM_IDNA ".example", AI_IDN | AI_CANONNAME | AI_CANONIDN,
"flags: AI_CANONNAME AI_IDN AI_CANONIDN\n"
"canonname: " SHEM ".example\n"
"address: STREAM/TCP 192.0.2.120 80\n");
#else
check_ai (SHEM_IDNA ".example", AI_IDN | AI_CANONNAME | AI_CANONIDN,
"flags: AI_CANONNAME AI_IDN AI_CANONIDN\n"
"canonname: " SHEM_IDNA ".example\n"
"address: STREAM/TCP 192.0.2.120 80\n");
#endif
/* Invalid IDNA canonical name is returned as-is. */
check_ai ("xn---.example", AI_CANONNAME | AI_CANONIDN,
"flags: AI_CANONNAME AI_CANONIDN\n"
"canonname: xn---.example\n"
"address: STREAM/TCP 192.0.2.120 80\n");
/* Non-IDN CNAME. */
check_ai ("with.cname.example", 0,
"address: STREAM/TCP 192.0.2.119 80\n");
check_ai ("with.cname.example", AI_IDN,
"flags: AI_IDN\n"
"address: STREAM/TCP 192.0.2.119 80\n");
check_ai ("with.cname.example", AI_IDN | AI_CANONNAME | AI_CANONIDN,
"flags: AI_CANONNAME AI_IDN AI_CANONIDN\n"
"canonname: non-idn-cname.example\n"
"address: STREAM/TCP 192.0.2.119 80\n");
check_ai ("with.cname." NAEMCHEN ".example", 0,
"error: Name or service not known\n");
check_ai ("with.cname." NAEMCHEN ".example", AI_IDN,
"flags: AI_IDN\n"
"address: STREAM/TCP 192.0.2.119 80\n");
check_ai ("with.cname." NAEMCHEN ".example", AI_IDN | AI_CANONNAME,
"flags: AI_CANONNAME AI_IDN\n"
"canonname: non-idn-cname.example\n"
"address: STREAM/TCP 192.0.2.119 80\n");
check_ai ("with.cname." NAEMCHEN ".example",
AI_IDN | AI_CANONNAME | AI_CANONIDN,
"flags: AI_CANONNAME AI_IDN AI_CANONIDN\n"
"canonname: non-idn-cname.example\n"
"address: STREAM/TCP 192.0.2.119 80\n");
/* IDN CNAME. */
check_ai ("With.idn-cname.example", 0,
"address: STREAM/TCP 192.0.2.87 80\n");
check_ai ("With.idn-cname.example", AI_IDN,
"flags: AI_IDN\n"
"address: STREAM/TCP 192.0.2.87 80\n");
check_ai ("With.idn-cname.example", AI_IDN | AI_CANONNAME,
"flags: AI_CANONNAME AI_IDN\n"
"canonname: " ANDERES_NAEMCHEN_IDNA ".example\n"
"address: STREAM/TCP 192.0.2.87 80\n");
check_ai ("With.idn-cname.example",
AI_IDN | AI_CANONNAME | AI_CANONIDN,
"flags: AI_CANONNAME AI_IDN AI_CANONIDN\n"
"canonname: " ANDERES_NAEMCHEN ".example\n"
"address: STREAM/TCP 192.0.2.87 80\n");
check_ai ("With.idn-cname." NAEMCHEN ".example", 0,
"error: Name or service not known\n");
check_ai ("With.idn-cname." NAEMCHEN ".example", AI_IDN,
"flags: AI_IDN\n"
"address: STREAM/TCP 192.0.2.119 80\n");
check_ai ("With.idn-cname." NAEMCHEN ".example", AI_IDN | AI_CANONNAME,
"flags: AI_CANONNAME AI_IDN\n"
"canonname: " ANDERES_NAEMCHEN_IDNA ".example\n"
"address: STREAM/TCP 192.0.2.119 80\n");
check_ai ("With.idn-cname." NAEMCHEN ".example",
AI_IDN | AI_CANONNAME | AI_CANONIDN,
"flags: AI_CANONNAME AI_IDN AI_CANONIDN\n"
"canonname: " ANDERES_NAEMCHEN ".example\n"
"address: STREAM/TCP 192.0.2.119 80\n");
/* Non-IDN to IDN CNAME chain. */
check_ai ("both.cname.idn-cname.example", 0,
"address: STREAM/TCP 192.0.2.98 80\n");
check_ai ("both.cname.idn-cname.example", AI_IDN,
"flags: AI_IDN\n"
"address: STREAM/TCP 192.0.2.98 80\n");
check_ai ("both.cname.idn-cname.example", AI_IDN | AI_CANONNAME,
"flags: AI_CANONNAME AI_IDN\n"
"canonname: " ANDERES_NAEMCHEN_IDNA ".example\n"
"address: STREAM/TCP 192.0.2.98 80\n");
check_ai ("both.cname.idn-cname.example",
AI_IDN | AI_CANONNAME | AI_CANONIDN,
"flags: AI_CANONNAME AI_IDN AI_CANONIDN\n"
"canonname: " ANDERES_NAEMCHEN ".example\n"
"address: STREAM/TCP 192.0.2.98 80\n");
check_ai ("both.cname.idn-cname." NAEMCHEN ".example", 0,
"error: Name or service not known\n");
check_ai ("both.cname.idn-cname." NAEMCHEN ".example", AI_IDN,
"flags: AI_IDN\n"
"address: STREAM/TCP 192.0.2.98 80\n");
check_ai ("both.cname.idn-cname." NAEMCHEN ".example",
AI_IDN | AI_CANONNAME,
"flags: AI_CANONNAME AI_IDN\n"
"canonname: " ANDERES_NAEMCHEN_IDNA ".example\n"
"address: STREAM/TCP 192.0.2.98 80\n");
check_ai ("both.cname.idn-cname." NAEMCHEN ".example",
AI_IDN | AI_CANONNAME | AI_CANONIDN,
"flags: AI_CANONNAME AI_IDN AI_CANONIDN\n"
"canonname: " ANDERES_NAEMCHEN ".example\n"
"address: STREAM/TCP 192.0.2.98 80\n");
}
/* Tests for getnameinfo which assume a working libidn2 library. */
__attribute__ ((unused))
static void
gni_tests_with_libidn2 (void)
{
gni_test (gni_non_idn_name, 0, "non-idn.example");
gni_test (gni_non_idn_name, NI_IDN, "non-idn.example");
gni_test (gni_non_idn_name, NI_NUMERICHOST, "192.0.2.0");
gni_test (gni_non_idn_name, NI_NUMERICHOST | NI_IDN, "192.0.2.0");
gni_test (gni_non_idn_cname_to_non_idn_name, 0, "non-idn-name.example");
gni_test (gni_non_idn_cname_to_non_idn_name, NI_IDN, "non-idn-name.example");
gni_test (gni_non_idn_cname_to_idn_name, 0, NAEMCHEN_IDNA ".example");
gni_test (gni_non_idn_cname_to_idn_name, NI_IDN, NAEMCHEN ".example");
gni_test (gni_idn_name, 0, NAEMCHEN_IDNA ".example");
gni_test (gni_idn_name, NI_IDN, NAEMCHEN ".example");
gni_test (gni_idn_shem, 0, SHEM_IDNA ".example");
gni_test (gni_idn_shem1, 0, SHEM1_IDNA ".example");
#if TEST_USE_UTF8
gni_test (gni_idn_shem, NI_IDN, SHEM ".example");
gni_test (gni_idn_shem1, NI_IDN, SHEM "1.example");
#else
gni_test (gni_idn_shem, NI_IDN, SHEM_IDNA ".example");
gni_test (gni_idn_shem1, NI_IDN, SHEM1_IDNA ".example");
#endif
gni_test (gni_idn_cname_to_non_idn_name, 0, "non-idn-name.example");
gni_test (gni_idn_cname_to_non_idn_name, NI_IDN, "non-idn-name.example");
gni_test (gni_idn_cname_to_idn_name, 0, ANDERES_NAEMCHEN_IDNA ".example");
gni_test (gni_idn_cname_to_idn_name, NI_IDN, ANDERES_NAEMCHEN ".example");
/* Test encoding errors. */
gni_test (gni_invalid_idn_1, 0, "xn---.example");
gni_test (gni_invalid_idn_1, NI_IDN, "xn---.example");
gni_test (gni_invalid_idn_2, 0, "xn--x.example");
gni_test (gni_invalid_idn_2, NI_IDN, "xn--x.example");
}