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77 lines
2.5 KiB
C
77 lines
2.5 KiB
C
/* Test ns_name_compress corner cases.
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Copyright (C) 2017-2020 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 <resolv.h>
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#include <stdlib.h>
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#include <string.h>
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#include <support/check.h>
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#include <support/support.h>
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/* Check that we can process names which fit into the destination
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buffer exactly. See bug 21359. */
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static void
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test_exact_fit (const char *name, size_t length)
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{
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unsigned char *buf = xmalloc (length + 1);
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memset (buf, '$', length + 1);
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enum { ptr_count = 5 };
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const unsigned char *dnptrs[ptr_count] = { buf, };
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int ret = ns_name_compress (name, buf, length,
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dnptrs, dnptrs + ptr_count);
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if (ret < 0)
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{
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support_record_failure ();
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printf ("error: ns_name_compress for %s/%zu failed\n", name, length);
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return;
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}
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if ((size_t) ret != length)
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{
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support_record_failure ();
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printf ("error: ns_name_compress for %s/%zu result mismatch: %d\n",
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name, length, ret);
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}
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if (buf[length] != '$')
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{
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support_record_failure ();
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printf ("error: ns_name_compress for %s/%zu padding write\n",
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name, length);
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}
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free (buf);
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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_exact_fit ("abc", 5);
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test_exact_fit ("abc.", 5);
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{
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char long_name[]
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= "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa."
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"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa."
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"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa."
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"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa.";
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TEST_VERIFY (strlen (long_name) == NS_MAXCDNAME - 1);
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test_exact_fit (long_name, NS_MAXCDNAME);
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long_name[sizeof (long_name) - 1] = '\0';
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test_exact_fit (long_name, NS_MAXCDNAME);
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}
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return 0;
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}
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#include <support/test-driver.c>
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