tests/request_key.c

/*
 * Check decoding of request_key syscall.
 *
 * Copyright (c) 2016 Eugene Syromyatnikov <evgsyr@gmail.com>
 * Copyright (c) 2016-2018 The strace developers.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "tests.h"

#include <asm/unistd.h>

#ifdef __NR_request_key

# include <inttypes.h>
# include <stdio.h>
# include <unistd.h>

void
print_val_str(const void *ptr, const char *str)
{
	if (str)
		printf("%s, ", str);
	else
		printf("%p, ", ptr);
}

void
do_request_key(const char *type, const char *type_str, const char *desc,
	const char *desc_str, const char *info, const char *info_str,
	int32_t keyring, const char *keyring_str)
{
	long rc = syscall(__NR_request_key, type, desc, info, keyring);
	const char *errstr = sprintrc(rc);
	printf("request_key(");
	print_val_str(type, type_str);
	print_val_str(desc, desc_str);
	print_val_str(info, info_str);
	if (keyring_str)
		printf("%s", keyring_str);
	else
		printf("%d", keyring);
	printf(") = %s\n", errstr);
}

int
main(void)
{
	static const char unterminated1[] = { '\1', '\2', '\3', '\4', '\5' };
	static const char unterminated2[] = { '\6', '\7', '\10', '\11', '\12' };
	static const char unterminated3[] = { '\16', '\17', '\20', '\21', '\22' };

	char *bogus_type = tail_memdup(unterminated1, sizeof(unterminated1));
	char *bogus_desc = tail_memdup(unterminated2, sizeof(unterminated2));
	char *bogus_info = tail_memdup(unterminated3, sizeof(unterminated3));

	unsigned i;
	unsigned j;
	unsigned k;
	unsigned l;

	struct {
		const char *type;
		const char *str;
	} types[] = {
		{ ARG_STR(NULL) },
		{ bogus_type + sizeof(unterminated1), NULL },
		{ bogus_type, NULL },
		{ ARG_STR("\20\21\22\23\24") },
		{ ARG_STR("user") },
	};

	struct {
		const char *desc;
		const char *str;
	} descs[] = {
		{ ARG_STR(NULL) },
		{ bogus_desc + sizeof(unterminated2), NULL },
		{ bogus_desc, NULL },
		{ ARG_STR("\25\26\27\30\31") },
		{ ARG_STR("desc") },
		{ "overly long description", STRINGIFY("overly long ") "..." },
	};

	struct {
		const char *info;
		const char *str;
	} infos[] = {
		{ ARG_STR(NULL) },
		{ bogus_info + sizeof(unterminated3), NULL },
		{ bogus_info, NULL },
		{ ARG_STR("\32\33\34\35\36") },
		{ ARG_STR("info") },
		{ "overly long info", STRINGIFY("overly long ") "..." },
	};

	struct {
		uint32_t keyring;
		const char *str;
	} keyrings[] = {
		{ ARG_STR(0) },
		{ ARG_STR(1234567890) },
		{ ARG_STR(-1234567890) },
		{ -1, "KEY_SPEC_THREAD_KEYRING" },
	};

	for (i = 0; i < ARRAY_SIZE(types); i++)
		for (j = 0; j < ARRAY_SIZE(descs); j++)
			for (k = 0; k < ARRAY_SIZE(infos); k++)
				for (l = 0; l < ARRAY_SIZE(keyrings); l++)
					do_request_key(
						types[i].type, types[i].str,
						descs[j].desc, descs[j].str,
						infos[k].info, infos[k].str,
						keyrings[l].keyring,
						keyrings[l].str);

	puts("+++ exited with 0 +++");

	return 0;
}

#else

SKIP_MAIN_UNDEFINED("__NR_request_key");

#endif