[PATCH v6 2/2] resolv: Create test for ipv4 and ipv6 resolv.conf flags
Petr Menšík
pemensik@redhat.com
Mon Oct 20 16:03:33 GMT 2025
Okay, found ai needs proper resetting after each getaddrinfo attempt.
Added in v7.
Hopefully that should fix 32bit failure. I don't know how to verify that
otherwise, unless I am able to debug 32 bit built in debugger.
Is there simple recipe how to do that, if it does not help?
On 20/10/2025 15:29, Adhemerval Zanella Netto wrote:
>
> On 16/10/25 11:05, Petr Menšík wrote:
>> Test newly added resolv.conf options ipv4 and ipv6. Derived from noaaa
>> test. Count query counts after the test, because it varies depending on
>> used flags.
>>
>> Signed-off-by: Petr Menšík <pemensik@redhat.com>
> Hi Petr,
>
> It has triggered a CI regression [1].
>
> [1] https://patchwork.sourceware.org/project/glibc/patch/20251016140557.230332-4-pemensik@redhat.com/
>
>> ---
>> resolv/Makefile | 2 +
>> resolv/tst-resolv-ipv4-ipv6.c | 623 ++++++++++++++++++++++++++++++++++
>> 2 files changed, 625 insertions(+)
>> create mode 100644 resolv/tst-resolv-ipv4-ipv6.c
>>
>> diff --git a/resolv/Makefile b/resolv/Makefile
>> index 8fa3398d76..36cd6f76c8 100644
>> --- a/resolv/Makefile
>> +++ b/resolv/Makefile
>> @@ -105,6 +105,7 @@ tests += \
>> tst-resolv-binary \
>> tst-resolv-byaddr \
>> tst-resolv-edns \
>> + tst-resolv-ipv4-ipv6 \
>> tst-resolv-invalid-cname \
>> tst-resolv-network \
>> tst-resolv-noaaaa \
>> @@ -300,6 +301,7 @@ $(objpfx)tst-resolv-res_init-multi: $(objpfx)libresolv.so \
>> $(shared-thread-library)
>> $(objpfx)tst-resolv-res_init-thread: $(objpfx)libresolv.so \
>> $(shared-thread-library)
>> +$(objpfx)tst-resolv-ipv4-ipv6: $(objpfx)libresolv.so $(shared-thread-library)
>> $(objpfx)tst-resolv-invalid-cname: $(objpfx)libresolv.so \
>> $(shared-thread-library)
>> $(objpfx)tst-resolv-noaaaa: $(objpfx)libresolv.so $(shared-thread-library)
>> diff --git a/resolv/tst-resolv-ipv4-ipv6.c b/resolv/tst-resolv-ipv4-ipv6.c
>> new file mode 100644
>> index 0000000000..274f7ee290
>> --- /dev/null
>> +++ b/resolv/tst-resolv-ipv4-ipv6.c
>> @@ -0,0 +1,623 @@
>> +/* Test RES_IPV4 and RES_IPV6 resolver option.
>> + Copyright (C) 2025 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/>. */
>> +
>> +#include <errno.h>
>> +#include <netdb.h>
>> +#include <resolv.h>
>> +#include <stdlib.h>
>> +#include <support/check.h>
>> +#include <support/check_nss.h>
>> +#include <support/resolv_test.h>
>> +#include <support/support.h>
>> +
>> +/* Used to keep track of the number of queries. */
>> +static volatile unsigned int queries;
>> +
>> +static void
>> +response (const struct resolv_response_context *ctx,
>> + struct resolv_response_builder *b,
>> + const char *qname, uint16_t qclass, uint16_t qtype)
>> +{
>> + /* Each test should only send one query. */
>> + ++queries;
>> + if (queries < 1 || queries > 2)
>> + FAIL_EXIT1 ("Unexpected number of queries %d on %s\n", queries, qname);
>> + TEST_COMPARE (qclass, C_IN);
>> +
>> + /* The only other query type besides A is PTR. */
>> + if (qtype != T_A && qtype != T_AAAA)
>> + TEST_COMPARE (qtype, T_PTR);
>> +
>> + int an, ns, ar;
>> + char *tail;
>> + if (sscanf (qname, "an%d.ns%d.ar%d.%ms", &an, &ns, &ar, &tail) != 4)
>> + FAIL_EXIT1 ("invalid QNAME: %s\n", qname);
>> + TEST_COMPARE_STRING (tail, "example");
>> + free (tail);
>> +
>> + if (an < 0 || ns < 0 || ar < 0)
>> + {
>> + struct resolv_response_flags flags = { .rcode = NXDOMAIN, };
>> + resolv_response_init (b, flags);
>> + resolv_response_add_question (b, qname, qclass, qtype);
>> + return;
>> + }
>> +
>> + struct resolv_response_flags flags = {};
>> + resolv_response_init (b, flags);
>> + resolv_response_add_question (b, qname, qclass, qtype);
>> +
>> + resolv_response_section (b, ns_s_an);
>> + for (int i = 0; i < an; ++i)
>> + {
>> + resolv_response_open_record (b, qname, qclass, qtype, 60);
>> + switch (qtype)
>> + {
>> + case T_A:
>> + {
>> + char ipv4[4] = {192, 0, 2, i + 1};
>> + resolv_response_add_data (b, &ipv4, sizeof (ipv4));
>> + }
>> + break;
>> +
>> + case T_AAAA:
>> + {
>> + char addr_ipv6[16] =
>> + { 0x20, 1, 0x0d, 0xb8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, i + 1 };
>> + resolv_response_add_data (b, addr_ipv6, sizeof (addr_ipv6));
>> + }
>> + break;
>> +
>> + case T_PTR:
>> + {
>> + char *name = xasprintf ("ptr-%d", i);
>> + resolv_response_add_name (b, name);
>> + free (name);
>> + }
>> + break;
>> + }
>> + resolv_response_close_record (b);
>> + }
>> +
>> + resolv_response_section (b, ns_s_ns);
>> + for (int i = 0; i < ns; ++i)
>> + {
>> + resolv_response_open_record (b, qname, qclass, T_NS, 60);
>> + char *name = xasprintf ("ns%d.example.net", i);
>> + resolv_response_add_name (b, name);
>> + free (name);
>> + resolv_response_close_record (b);
>> + }
>> +
>> + resolv_response_section (b, ns_s_ar);
>> + int addr = 1;
>> + for (int i = 0; i < ns; ++i)
>> + {
>> + char *name = xasprintf ("ns%d.example.net", i);
>> + for (int j = 0; j < ar; ++j)
>> + {
>> + resolv_response_open_record (b, name, qclass, T_A, 60);
>> + char ipv4[4] = {192, 0, 2, addr};
>> + resolv_response_add_data (b, &ipv4, sizeof (ipv4));
>> + resolv_response_close_record (b);
>> +
>> + resolv_response_open_record (b, name, qclass, T_AAAA, 60);
>> + char ipv6[16]
>> + = {0x20, 0x01, 0xd, 0xb8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, addr};
>> + resolv_response_add_data (b, &ipv6, sizeof (ipv6));
>> + resolv_response_close_record (b);
>> +
>> + ++addr;
>> + }
>> + free (name);
>> + }
>> +}
>> +
>> +/* Number of modes. Lowest bit encodes *n* function vs implicit _res
>> + argument. The mode numbers themselves are arbitrary. */
>> +enum { mode_count = 8 };
>> +
>> +/* res_send-like modes do not perform error translation. */
>> +enum { first_send_mode = 6 };
>> +
>> +static int
>> +libresolv_query (unsigned int mode, const char *qname, uint16_t qtype,
>> + unsigned char *buf, size_t buflen)
>> +{
>> + int saved_errno = errno;
>> +
>> + TEST_VERIFY_EXIT (mode < mode_count);
>> +
>> + switch (mode)
>> + {
>> + case 0:
>> + return res_query (qname, C_IN, qtype, buf, buflen);
>> + case 1:
>> + return res_nquery (&_res, qname, C_IN, qtype, buf, buflen);
>> + case 2:
>> + return res_search (qname, C_IN, qtype, buf, buflen);
>> + case 3:
>> + return res_nsearch (&_res, qname, C_IN, qtype, buf, buflen);
>> + case 4:
>> + return res_querydomain (qname, "", C_IN, qtype, buf, buflen);
>> + case 5:
>> + return res_nquerydomain (&_res, qname, "", C_IN, qtype, buf, buflen);
>> + case 6:
>> + {
>> + unsigned char querybuf[512];
>> + int ret = res_mkquery (QUERY, qname, C_IN, qtype,
>> + NULL, 0, NULL, querybuf, sizeof (querybuf));
>> + TEST_VERIFY_EXIT (ret > 0);
>> + errno = saved_errno;
>> + return res_send (querybuf, ret, buf, buflen);
>> + }
>> + case 7:
>> + {
>> + unsigned char querybuf[512];
>> + int ret = res_nmkquery (&_res, QUERY, qname, C_IN, qtype,
>> + NULL, 0, NULL, querybuf, sizeof (querybuf));
>> + TEST_VERIFY_EXIT (ret > 0);
>> + errno = saved_errno;
>> + return res_nsend (&_res, querybuf, ret, buf, buflen);
>> + }
>> + }
>> + __builtin_unreachable ();
>> +}
>> +
>> +/* Common parts should not change behaviour whatever flag is used. */
>> +static int
>> +do_test_common(void)
>> +{
>> + queries = 0;
>> +
>> + /* getaddrinfo checks with one address. */
>> + struct addrinfo *ai;
>> + int ret;
>> + ret = getaddrinfo ("an1.ns2.ar1.example", "80",
>> + &(struct addrinfo)
>> + {
>> + .ai_family = AF_INET,
>> + .ai_socktype = SOCK_STREAM,
>> + }, &ai);
>> + check_addrinfo ("an1.ns2.ar1.example (AF_INET)", ai, ret,
>> + "address: STREAM/TCP 192.0.2.1 80\n");
>> + freeaddrinfo (ai);
>> + TEST_COMPARE (queries, 1);
>> +
>> + queries = 0;
>> + ret = getaddrinfo ("an1.ns2.ar1.example", "80",
>> + &(struct addrinfo)
>> + {
>> + .ai_family = AF_INET6,
>> + .ai_socktype = SOCK_STREAM,
>> + }, &ai);
>> + check_addrinfo ("an1.ns2.ar1.example (AF_INET6)", ai, ret,
>> + "address: STREAM/TCP 2001:db8::1 80\n");
>> + freeaddrinfo (ai);
>> + TEST_COMPARE (queries, 1);
>> + queries = 0;
>> +
>> + /* getaddrinfo checks with three addresses. */
>> + ret = getaddrinfo ("an3.ns2.ar1.example", "80",
>> + &(struct addrinfo)
>> + {
>> + .ai_family = AF_INET,
>> + .ai_socktype = SOCK_STREAM,
>> + }, &ai);
>> + check_addrinfo ("an3.ns2.ar1.example (AF_INET)", ai, ret,
>> + "address: STREAM/TCP 192.0.2.1 80\n"
>> + "address: STREAM/TCP 192.0.2.2 80\n"
>> + "address: STREAM/TCP 192.0.2.3 80\n");
>> + freeaddrinfo (ai);
>> + TEST_COMPARE (queries, 1);
>> + queries = 0;
>> + ret = getaddrinfo ("an3.ns2.ar1.example", "80",
>> + &(struct addrinfo)
>> + {
>> + .ai_family = AF_INET6,
>> + .ai_socktype = SOCK_STREAM,
>> + }, &ai);
>> + check_addrinfo ("an3.ns2.ar1.example (AF_INET6)", ai, ret,
>> + "address: STREAM/TCP 2001:db8::1 80\n"
>> + "address: STREAM/TCP 2001:db8::2 80\n"
>> + "address: STREAM/TCP 2001:db8::3 80\n");
>> + freeaddrinfo (ai);
>> + TEST_COMPARE (queries, 1);
>> + queries = 0;
>> +
>> + return ret;
>> +}
>> +
>> +/* test IPV4 flag */
>> +static int
>> +do_test_ipv4 (int options)
>> +{
>> + int ret;
>> + struct addrinfo *ai;
>> +
>> + _res.options = options;
>> + queries = 0;
>> +
>> + ret = do_test_common();
>> +
>> + /* getaddrinfo checks with one address. */
>> + ret = getaddrinfo ("an1.ns2.ar1.example", "80",
>> + &(struct addrinfo)
>> + {
>> + .ai_family = AF_UNSPEC,
>> + .ai_socktype = SOCK_STREAM,
>> + }, &ai);
>> + check_addrinfo ("an1.ns2.ar1.example (AF_UNSPEC) ipv4", ai, ret,
>> + "address: STREAM/TCP 192.0.2.1 80\n");
>> + freeaddrinfo (ai);
>> + TEST_COMPARE (queries, 1);
>> +
>> + queries = 0;
>> + ret = getaddrinfo ("an3.ns2.ar1.example", "80",
>> + &(struct addrinfo)
>> + {
>> + .ai_family = AF_UNSPEC,
>> + .ai_socktype = SOCK_STREAM,
>> + }, &ai);
>> + check_addrinfo ("an3.ns2.ar1.example (AF_UNSPEC) ipv4", ai, ret,
>> + "address: STREAM/TCP 192.0.2.1 80\n"
>> + "address: STREAM/TCP 192.0.2.2 80\n"
>> + "address: STREAM/TCP 192.0.2.3 80\n");
>> + freeaddrinfo (ai);
>> + TEST_COMPARE (queries, 1);
>> + queries = 0;
>> +
>> + return ret;
>> +}
>> +
>> +static int
>> +do_test_ipv6 (int options)
>> +{
>> + int ret;
>> + struct addrinfo *ai;
>> +
>> + _res.options = options;
>> + queries = 0;
>> +
>> + ret = do_test_common();
>> +
>> + /* getaddrinfo checks with one address. */
>> + ret = getaddrinfo ("an1.ns2.ar1.example", "80",
>> + &(struct addrinfo)
>> + {
>> + .ai_family = AF_UNSPEC,
>> + .ai_socktype = SOCK_STREAM,
>> + }, &ai);
>> + check_addrinfo ("an1.ns2.ar1.example (AF_UNSPEC) ipv6", ai, ret,
>> + "address: STREAM/TCP 2001:db8::1 80\n");
>> + freeaddrinfo (ai);
>> + TEST_COMPARE (queries, 1);
>> + queries = 0;
>> +
>> + /* getaddrinfo checks with three addresses. */
>> + ret = getaddrinfo ("an3.ns2.ar1.example", "80",
>> + &(struct addrinfo)
>> + {
>> + .ai_family = AF_UNSPEC,
>> + .ai_socktype = SOCK_STREAM,
>> + }, &ai);
>> + check_addrinfo ("an3.ns2.ar1.example (AF_UNSPEC) ipv6", ai, ret,
>> + "address: STREAM/TCP 2001:db8::1 80\n"
>> + "address: STREAM/TCP 2001:db8::2 80\n"
>> + "address: STREAM/TCP 2001:db8::3 80\n");
>> + freeaddrinfo (ai);
>> + TEST_COMPARE (queries, 1);
>> + queries = 0;
>> +
>> + return ret;
>> +}
>> +
>> +/* When both flags are applied */
>> +static int
>> +do_test_ipv4_ipv6 (int options)
>> +{
>> + int ret;
>> + struct addrinfo *ai;
>> +
>> + _res.options = options;
>> + queries = 0;
>> +
>> + ret = do_test_common();
>> +
>> + /* getaddrinfo checks with one address. */
>> + ret = getaddrinfo ("an1.ns2.ar1.example", "80",
>> + &(struct addrinfo)
>> + {
>> + .ai_family = AF_UNSPEC,
>> + .ai_socktype = SOCK_STREAM,
>> + }, &ai);
>> + check_addrinfo ("an1.ns2.ar1.example (AF_UNSPEC) ipv4 ipv6", ai, ret,
>> + "address: STREAM/TCP 192.0.2.1 80\n"
>> + "address: STREAM/TCP 2001:db8::1 80\n");
>> + freeaddrinfo (ai);
>> + TEST_COMPARE (queries, 2);
>> + queries = 0;
>> +
>> + /* getaddrinfo checks with three addresses. */
>> + ret = getaddrinfo ("an3.ns2.ar1.example", "80",
>> + &(struct addrinfo)
>> + {
>> + .ai_family = AF_UNSPEC,
>> + .ai_socktype = SOCK_STREAM,
>> + }, &ai);
>> + check_addrinfo ("an3.ns2.ar1.example (AF_UNSPEC) ipv4 ipv6", ai, ret,
>> + "address: STREAM/TCP 192.0.2.1 80\n"
>> + "address: STREAM/TCP 192.0.2.2 80\n"
>> + "address: STREAM/TCP 192.0.2.3 80\n"
>> + "address: STREAM/TCP 2001:db8::1 80\n"
>> + "address: STREAM/TCP 2001:db8::2 80\n"
>> + "address: STREAM/TCP 2001:db8::3 80\n");
>> + freeaddrinfo (ai);
>> + TEST_COMPARE (queries, 2);
>> + queries = 0;
>> +
>> + return ret;
>> +}
>> +
>> +static int
>> +do_test (void)
>> +{
>> + int baseoptions;
>> + int ret;
>> + struct addrinfo *ai;
>> + struct resolv_test *obj = resolv_test_start
>> + ((struct resolv_redirect_config)
>> + {
>> + .response_callback = response
>> + });
>> +
>> + baseoptions = _res.options;
>> +
>> + ret = do_test_ipv4(baseoptions | RES_IPV4);
>> + ret = do_test_ipv6(baseoptions | RES_IPV6);
>> + ret = do_test_ipv4_ipv6(baseoptions);
>> + ret = do_test_ipv4_ipv6(baseoptions | RES_IPV4 | RES_IPV6);
>> +
>> + /* getaddrinfo checks with no address. */
>> + ret = getaddrinfo ("an0.ns2.ar1.example", "80",
>> + &(struct addrinfo)
>> + {
>> + .ai_family = AF_INET,
>> + .ai_socktype = SOCK_STREAM,
>> + }, &ai);
>> + check_addrinfo ("an0.ns2.ar1.example (AF_INET)", ai, ret,
>> + "error: No address associated with hostname\n");
>> + freeaddrinfo (ai);
>> + queries = 0;
>> + ret = getaddrinfo ("an0.ns2.ar1.example", "80",
>> + &(struct addrinfo)
>> + {
>> + .ai_family = AF_INET6,
>> + .ai_socktype = SOCK_STREAM,
>> + }, &ai);
>> + check_addrinfo ("an0.ns2.ar1.example (AF_INET6)", ai, ret,
>> + "error: No address associated with hostname\n");
>> + freeaddrinfo (ai);
>> + queries = 0;
>> + ret = getaddrinfo ("an0.ns2.ar1.example", "80",
>> + &(struct addrinfo)
>> + {
>> + .ai_family = AF_UNSPEC,
>> + .ai_socktype = SOCK_STREAM,
>> + }, &ai);
>> + check_addrinfo ("an-1.ns2.ar1.example (AF_UNSPEC)", ai, ret,
>> + "error: No address associated with hostname\n");
>> + freeaddrinfo (ai);
>> + queries = 0;
>> +
>> + /* getaddrinfo checks with NXDOMAIN. */
>> + ret = getaddrinfo ("an-1.ns2.ar1.example", "80",
>> + &(struct addrinfo)
>> + {
>> + .ai_family = AF_INET,
>> + .ai_socktype = SOCK_STREAM,
>> + }, &ai);
>> + check_addrinfo ("an-1.ns2.ar1.example (AF_INET)", ai, ret,
>> + "error: Name or service not known\n");
>> + freeaddrinfo (ai);
>> + queries = 0;
>> + ret = getaddrinfo ("an-1.ns2.ar1.example", "80",
>> + &(struct addrinfo)
>> + {
>> + .ai_family = AF_INET6,
>> + .ai_socktype = SOCK_STREAM,
>> + }, &ai);
>> + check_addrinfo ("an-1.ns2.ar1.example (AF_INET6)", ai, ret,
>> + "error: Name or service not known\n");
>> + freeaddrinfo (ai);
>> + queries = 0;
>> + ret = getaddrinfo ("an-1.ns2.ar1.example", "80",
>> + &(struct addrinfo)
>> + {
>> + .ai_family = AF_UNSPEC,
>> + .ai_socktype = SOCK_STREAM,
>> + }, &ai);
>> + check_addrinfo ("an-1.ns2.ar1.example (AF_UNSPEC)", ai, ret,
>> + "error: Name or service not known\n");
>> + freeaddrinfo (ai);
>> + queries = 0;
>> +
>> + for (unsigned int mode = 0; mode < mode_count; ++mode)
>> + {
>> + unsigned char *buf;
>> + int ret;
>> +
>> + /* Response for A. */
>> + buf = malloc (512);
>> + ret = libresolv_query (mode, "an1.ns2.ar1.example", T_A, buf, 512);
>> + TEST_VERIFY_EXIT (ret > 0);
>> + check_dns_packet ("an1.ns2.ar1.example A", buf, ret,
>> + "name: an1.ns2.ar1.example\n"
>> + "address: 192.0.2.1\n");
>> + free (buf);
>> + queries = 0;
>> +
>> + /* NODATA response for A. */
>> + buf = malloc (512);
>> + errno = 0;
>> + ret = libresolv_query (mode, "an0.ns2.ar1.example", T_A, buf, 512);
>> + if (mode < first_send_mode)
>> + {
>> + TEST_COMPARE (ret, -1);
>> + TEST_COMPARE (errno, 0);
>> + TEST_COMPARE (h_errno, NO_ADDRESS);
>> + }
>> + else
>> + {
>> + TEST_VERIFY_EXIT (ret > 0);
>> + TEST_COMPARE (((HEADER *)buf)->rcode, 0);
>> + check_dns_packet ("an1.ns2.ar1.example A", buf, ret,
>> + "name: an0.ns2.ar1.example\n");
>> + }
>> + free (buf);
>> + queries = 0;
>> +
>> + /* NXDOMAIN response for A. */
>> + buf = malloc (512);
>> + errno = 0;
>> + ret = libresolv_query (mode, "an-1.ns2.ar1.example", T_A, buf, 512);
>> + if (mode < first_send_mode)
>> + {
>> + TEST_COMPARE (ret, -1);
>> + TEST_COMPARE (errno, 0);
>> + TEST_COMPARE (h_errno, HOST_NOT_FOUND);
>> + }
>> + else
>> + {
>> + TEST_VERIFY_EXIT (ret > 0);
>> + TEST_COMPARE (((HEADER *)buf)->rcode, NXDOMAIN);
>> + check_dns_packet ("an1.ns2.ar1.example A", buf, ret,
>> + "name: an-1.ns2.ar1.example\n");
>> + }
>> + free (buf);
>> + queries = 0;
>> +
>> + /* Response for PTR. */
>> + buf = malloc (512);
>> + ret = libresolv_query (mode, "an1.ns2.ar1.example", T_PTR, buf, 512);
>> + TEST_VERIFY_EXIT (ret > 0);
>> + check_dns_packet ("an1.ns2.ar1.example PTR", buf, ret,
>> + "name: an1.ns2.ar1.example\n"
>> + "data: an1.ns2.ar1.example PTR ptr-0\n");
>> + free (buf);
>> + queries = 0;
>> +
>> + /* NODATA response for PTR. */
>> + buf = malloc (512);
>> + errno = 0;
>> + ret = libresolv_query (mode, "an0.ns2.ar1.example", T_PTR, buf, 512);
>> + if (mode < first_send_mode)
>> + {
>> + TEST_COMPARE (ret, -1);
>> + TEST_COMPARE (errno, 0);
>> + TEST_COMPARE (h_errno, NO_ADDRESS);
>> + }
>> + else
>> + {
>> + TEST_VERIFY_EXIT (ret > 0);
>> + TEST_COMPARE (((HEADER *)buf)->rcode, 0);
>> + check_dns_packet ("an1.ns2.ar1.example PTR", buf, ret,
>> + "name: an0.ns2.ar1.example\n");
>> + }
>> + free (buf);
>> + queries = 0;
>> +
>> + /* NXDOMAIN response for PTR. */
>> + buf = malloc (512);
>> + errno = 0;
>> + ret = libresolv_query (mode, "an-1.ns2.ar1.example", T_PTR, buf, 512);
>> + if (mode < first_send_mode)
>> + {
>> + TEST_COMPARE (ret, -1);
>> + TEST_COMPARE (errno, 0);
>> + TEST_COMPARE (h_errno, HOST_NOT_FOUND);
>> + }
>> + else
>> + {
>> + TEST_VERIFY_EXIT (ret > 0);
>> + TEST_COMPARE (((HEADER *)buf)->rcode, NXDOMAIN);
>> + check_dns_packet ("an1.ns2.ar1.example PTR", buf, ret,
>> + "name: an-1.ns2.ar1.example\n");
>> + }
>> + free (buf);
>> + queries = 0;
>> +
>> + /* NODATA response for AAAA. */
>> + buf = malloc (512);
>> + errno = 0;
>> + ret = libresolv_query (mode, "an1.ns2.ar1.example", T_AAAA, buf, 512);
>> + TEST_VERIFY_EXIT (ret > 0);
>> + check_dns_packet ("an1.ns2.ar1.example AAAA", buf, ret,
>> + "name: an1.ns2.ar1.example\n"
>> + "address: 2001:db8::1\n");
>> + TEST_VERIFY_EXIT (ret > 0);
>> + free (buf);
>> + queries = 0;
>> +
>> + /* NODATA response for AAAA (original is already NODATA). */
>> + buf = malloc (512);
>> + errno = 0;
>> + ret = libresolv_query (mode, "an0.ns2.ar1.example", T_AAAA, buf, 512);
>> + if (mode < first_send_mode)
>> + {
>> + TEST_COMPARE (ret, -1);
>> + TEST_COMPARE (errno, 0);
>> + TEST_COMPARE (h_errno, NO_ADDRESS);
>> + }
>> + else
>> + {
>> + TEST_VERIFY_EXIT (ret > 0);
>> + TEST_COMPARE (((HEADER *)buf)->rcode, 0);
>> + check_dns_packet ("an0.ns2.ar1.example A", buf, ret,
>> + "name: an0.ns2.ar1.example\n");
>> + }
>> + free (buf);
>> + queries = 0;
>> +
>> + /* NXDOMAIN response. */
>> + buf = malloc (512);
>> + errno = 0;
>> + ret = libresolv_query (mode, "an-1.ns2.ar1.example", T_AAAA, buf, 512);
>> + if (mode < first_send_mode)
>> + {
>> + TEST_COMPARE (ret, -1);
>> + TEST_COMPARE (errno, 0);
>> + TEST_COMPARE (h_errno, HOST_NOT_FOUND);
>> + }
>> + else
>> + {
>> + TEST_VERIFY_EXIT (ret > 0);
>> + TEST_COMPARE (((HEADER *)buf)->rcode, NXDOMAIN);
>> + check_dns_packet ("an-1.ns2.ar1.example A", buf, ret,
>> + "name: an-1.ns2.ar1.example\n");
>> + }
>> + free (buf);
>> + queries = 0;
>> + }
>> +
>> + resolv_test_end (obj);
>> +
>> + return 0;
>> +}
>> +
>> +#include <support/test-driver.c>
--
Petr Menšík
Senior Software Engineer, RHEL
Red Hat, https://www.redhat.com/
PGP: DFCF908DB7C87E8E529925BC4931CA5B6C9FC5CB
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