libpsl/fuzz/libpsl_fuzzer.c

/*
 * Copyright(c) 2017-2018 Tim Ruehsen
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 *
 * This file is part of libpsl.
 */

#include <config.h>

#include <assert.h> /* assert */
#include <stdint.h> /* uint8_t */
#include <stdlib.h> /* malloc, free */
#include <string.h> /* memcpy */

#if defined(WITH_LIBICU)
#include <unicode/uclean.h>
#endif

#include "libpsl.h"
#include "fuzzer.h"

int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
{
	static int first_run = 1;
	psl_ctx_t *psl;
	char *domain, *res;
	int rc;

	if (size > 64 * 1024 - 1)
		return 0;

	domain = (char *) malloc(size + 1);
	assert(domain != NULL);

	/* 0 terminate */
	memcpy(domain, data, size);
	domain[size] = 0;

	psl = (psl_ctx_t *) psl_builtin();

	psl_is_public_suffix(psl, domain);
	psl_is_public_suffix2(psl, domain, PSL_TYPE_PRIVATE);
	psl_is_public_suffix2(psl, domain, PSL_TYPE_ICANN);
	psl_is_public_suffix2(psl, domain, PSL_TYPE_NO_STAR_RULE);
	psl_is_public_suffix2(psl, domain, PSL_TYPE_NO_STAR_RULE|PSL_TYPE_ANY);
	psl_unregistrable_domain(psl, domain);
	psl_registrable_domain(psl, domain);

	psl_is_cookie_domain_acceptable(psl, "", NULL);
	psl_is_cookie_domain_acceptable(psl, "a.b.c.e.com", domain);

	if ((rc = psl_str_to_utf8lower(domain, "utf-8", NULL, &res)) == PSL_SUCCESS)
		free(res);
	if ((rc = psl_str_to_utf8lower(domain, "iso-8859-1", NULL, &res)) == PSL_SUCCESS)
		free(res);
	if ((rc = psl_str_to_utf8lower(domain, NULL, NULL, &res)) == PSL_SUCCESS)
		free(res);

	psl_free(psl);

	if (first_run) {
		psl_is_public_suffix(NULL, domain);
		psl_check_version_number(1);
		psl_get_version();
		psl_dist_filename();
		psl_builtin_outdated();
		psl_builtin_filename();
		psl_builtin_sha1sum();
		psl_builtin_file_time();
		first_run = 0;
	}

	free(domain);

#if defined(WITH_LIBICU)
	u_cleanup(); /* free all library internal memory to avoid memory leaks being reported */
#endif

	return 0;
}