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/* Tests for ns_name_pton.
Copyright (C) 2017-2021 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 <arpa/nameser.h>
#include <array_length.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <support/check.h>
#include <support/support.h>
#include <support/test-driver.h>
/* Bits which indicate which functions are supposed to report
success. */
enum
{
hnok = 1,
dnok = 2,
mailok = 4,
ownok = 8,
allnomailok = hnok | dnok | ownok,
allok = hnok | dnok | mailok | ownok
};
/* A string of 60 characters. */
#define STRING60 "zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz"
/* A string of 63 characters (maximum label length). */
#define STRING63 STRING60 "zzz"
/* A string of 60 bytes (non-ASCII). */
#define STRING60OCT \
"\377\377\377\377\377\377\377\377\377\377\377\377\377\377\377\377\377" \
"\377\377\377\377\377\377\377\377\377\377\377\377\377\377\377\377\377" \
"\377\377\377\377\377\377\377\377\377\377\377\377\377\377\377\377\377" \
"\377\377\377\377\377\377\377\377\377"
/* A string of 63 bytes (non-ASCII). */
#define STRING63OCT STRING60OCT "\377\377\377"
/* A string of 60 bytes (non-ASCII, quoted decimal). */
#define STRING60DEC \
"\\255\\255\\255\\255\\255\\255\\255\\255\\255\\255" \
"\\255\\255\\255\\255\\255\\255\\255\\255\\255\\255" \
"\\255\\255\\255\\255\\255\\255\\255\\255\\255\\255" \
"\\255\\255\\255\\255\\255\\255\\255\\255\\255\\255" \
"\\255\\255\\255\\255\\255\\255\\255\\255\\255\\255" \
"\\255\\255\\255\\255\\255\\255\\255\\255\\255\\255"
/* A string of 63 bytes (non-ASCII, quoted decimal). */
#define STRING63DEC STRING60DEC "\\255\\255\\255"
/* Combines a test name with the expected results. */
struct test_case
{
const char *dn;
const char *back; /* Expected test result converted using ns_name_ntop. */
bool fully_qualified; /* True if the domain name has a trailing dot. */
};
static const struct test_case tests[] =
{
{ "", ".", false },
{ ".", ".", true },
{ "..", NULL, },
{ "www", "www", false },
{ "www.", "www", true },
{ "www\\.", "www\\.", false },
{ ".www", NULL, },
{ ".www\\.", NULL, },
{ "example.com", "example.com", false },
{ "example.com.", "example.com", true },
{ ".example.com", NULL, },
{ ".example.com.", NULL, },
{ "example\\.com", "example\\.com", false },
{ "example\\.com.", "example\\.com", true },
{ "example..", NULL, },
{ "example..com", NULL, },
{ "example..com", NULL, },
{ "\\0", NULL, },
{ "\\00", NULL, },
{ "\\000", "\\000", false },
{ "\\1", NULL, },
{ "\\01", NULL, },
{ "\\001", "\\001", false },
{ "\\1x", NULL, },
{ "\\01x", NULL, },
{ "\\001x", "\\001x", false },
{ "\\256", NULL, },
{ "\\0641", "\\@1", false },
{ "\\0011", "\\0011", false },
{ STRING63, STRING63, false },
{ STRING63 ".", STRING63, true },
{ STRING63 "z", NULL, },
{ STRING63 "\\.", NULL, },
{ STRING60 "zz\\.", STRING60 "zz\\.", false },
{ STRING60 "zz\\..", STRING60 "zz\\.", true },
{ STRING63 "." STRING63 "." STRING63 "." STRING60 "z",
STRING63 "." STRING63 "." STRING63 "." STRING60 "z", false },
{ STRING63 "." STRING63 "." STRING63 "." STRING60 "z.",
STRING63 "." STRING63 "." STRING63 "." STRING60 "z", true },
{ STRING63 "." STRING63 "." STRING63 "." STRING60 "zz", NULL, },
{ STRING63 "." STRING63 "." STRING63 "." STRING60 "zzz", NULL, },
{ STRING63OCT "." STRING63OCT "." STRING63OCT "." STRING60OCT "\377",
STRING63DEC "." STRING63DEC "." STRING63DEC "." STRING60DEC "\\255",
false },
{ STRING63OCT "." STRING63OCT "." STRING63OCT "." STRING60OCT "\377.",
STRING63DEC "." STRING63DEC "." STRING63DEC "." STRING60DEC "\\255",
true },
{ STRING63OCT "." STRING63OCT "." STRING63OCT "." STRING60OCT
"\377\377", NULL, },
{ STRING63OCT "." STRING63OCT "." STRING63OCT "." STRING60OCT
"\377\377\377", NULL, },
{ "\\", NULL, },
{ "\\\\", "\\\\", false },
{ "\\\\.", "\\\\", true },
{ "\\\\\\", NULL, },
{ "a\\", NULL, },
{ "a.\\", NULL, },
{ "a.b\\", NULL, },
};
static int
do_test (void)
{
unsigned char *wire = xmalloc (NS_MAXCDNAME);
char *text = xmalloc (NS_MAXDNAME);
for (const struct test_case *test = tests; test < array_end (tests); ++test)
{
if (test_verbose)
printf ("info: testing domain name [[[%s]]]\n", test->dn);
int ret = ns_name_pton (test->dn, wire, NS_MAXCDNAME);
if (ret == -1)
{
if (test->back != NULL)
{
support_record_failure ();
printf ("error: unexpected decoding failure for [[%s]]\n",
test->dn);
}
/* Otherwise, we have an expected decoding failure. */
continue;
}
if (ret < -1 || ret > 1)
{
support_record_failure ();
printf ("error: invalid return value %d for [[%s]]\n",
ret, test->dn);
continue;
}
int ret2 = ns_name_ntop (wire, text, NS_MAXDNAME);
if (ret2 < 0)
{
support_record_failure ();
printf ("error: failure to convert back [[%s]]\n", test->dn);
}
if (test->back == NULL)
{
support_record_failure ();
printf ("error: unexpected success converting [[%s]]\n", test->dn);
if (ret2 >= 1)
printf ("error: result converts back to [[%s]]\n", test->dn);
continue;
}
if (strcmp (text, test->back) != 0)
{
support_record_failure ();
printf ("error: back-conversion of [[%s]] did not match\n",
test->dn);
printf ("error: expected: [[%s]]\n", test->back);
printf ("error: actual: [[%s]]\n", text);
}
if (ret != test->fully_qualified)
{
support_record_failure ();
printf ("error: invalid fully-qualified status for [[%s]]\n",
test->dn);
printf ("error: expected: %d\n", (int) test->fully_qualified);
printf ("error: actual: %d\n", ret);
}
}
free (text);
free (wire);
return 0;
}
#include <support/test-driver.c>
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