102 lines
3.2 KiB
C
102 lines
3.2 KiB
C
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/* Tests for the support_format_dns_packet function.
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Copyright (C) 2016-2022 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <support/check.h>
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#include <support/format_nss.h>
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#include <support/run_diff.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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static void
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check_packet (const void *buffer, size_t length,
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const char *name, const char *expected)
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{
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char *actual = support_format_dns_packet (buffer, length);
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if (strcmp (actual, expected) != 0)
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{
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support_record_failure ();
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printf ("error: formatted packet does not match: %s\n", name);
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support_run_diff ("expected", expected,
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"actual", actual);
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}
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free (actual);
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}
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static void
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test_aaaa_length (void)
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{
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static const char packet[] =
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/* Header: Response with two records. */
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"\x12\x34\x80\x00\x00\x01\x00\x02\x00\x00\x00\x00"
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/* Question section. www.example/IN/AAAA. */
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"\x03www\x07""example\x00\x00\x1c\x00\x01"
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/* Answer section. www.example AAAA [corrupted]. */
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"\xc0\x0c"
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"\x00\x1c\x00\x01\x00\x00\x00\x00\x00\x10"
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"\x20\x01\x0d\xb8\x05\x06\x07\x08"
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"\x11\x12\x13\x14\x15\x16\x17\x18"
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/* www.example AAAA [corrupted]. */
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"\xc0\x0c"
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"\x00\x1c\x00\x01\x00\x00\x00\x00\x00\x11"
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"\x01\x02\x03\x04\x05\x06\x07\x08"
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"\x11\x12\x13\x14\x15\x16\x17\x18" "\xff";
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check_packet (packet, sizeof (packet) - 1, __func__,
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"name: www.example\n"
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"address: 2001:db8:506:708:1112:1314:1516:1718\n"
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"error: AAAA record of size 17: www.example\n");
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}
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static void
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test_multiple_cnames (void)
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{
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static const char packet[] =
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/* Header: Response with three records. */
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"\x12\x34\x80\x00\x00\x01\x00\x03\x00\x00\x00\x00"
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/* Question section. www.example/IN/A. */
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"\x03www\x07""example\x00\x00\x01\x00\x01"
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/* Answer section. www.example CNAME www1.example. */
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"\xc0\x0c"
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"\x00\x05\x00\x01\x00\x00\x00\x00\x00\x07"
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"\x04www1\xc0\x10"
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/* www1 CNAME www2. */
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"\x04www1\xc0\x10"
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"\x00\x05\x00\x01\x00\x00\x00\x00\x00\x07"
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"\x04www2\xc0\x10"
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/* www2 A 192.0.2.1. */
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"\x04www2\xc0\x10"
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"\x00\x01\x00\x01\x00\x00\x00\x00\x00\x04"
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"\xc0\x00\x02\x01";
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check_packet (packet, sizeof (packet) - 1, __func__,
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"name: www.example\n"
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"name: www1.example\n"
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"name: www2.example\n"
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"address: 192.0.2.1\n");
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}
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static int
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do_test (void)
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{
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test_aaaa_length ();
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test_multiple_cnames ();
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return 0;
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}
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#include <support/test-driver.c>
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