ap_find_token: add unit tests

/* Licensed to the Apache Software Foundation (ASF) under one or more

 * contributor license agreements.  See the NOTICE file distributed with

 * this work for additional information regarding copyright ownership.

 * The ASF licenses this file to You under the Apache License, Version 2.0

 * (the "License"); you may not use this file except in compliance with

 * the License.  You may obtain a copy of the License at

 *

 *     http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

#include "check.h"

#include "../httpdunit.h"

#include "httpd.h"

/*

 * Test Fixture -- runs once per test

 */

static apr_pool_t *g_pool;

static void util_setup(void)

{

    if (apr_pool_create(&g_pool, NULL) != APR_SUCCESS) {

        exit(1);

    }

}

static void util_teardown(void)

{

    apr_pool_destroy(g_pool);

}

/*

 * ap_test_token()

 */

struct ap_test_token_case {

    const char *list;

    const char *token;

    int expected;

};

const struct ap_test_token_case ap_test_token_cases[] = {

    { "one, two, three",   "one",   1 },

    { "one, two, three",   "two",   1 },

    { "one, two, three",   "three", 1 },

    { "one,two,three",     "two",   1 },

    { NULL,                "token", 0 },

    /* Regression test for CVE-2017-7668 */

    { "one, two, \0three", "three", 0 },

    /*

     * Dubious compatibility cases

     */

    { ",\x01,one,,two,/,,three,,", "one",   1 },

    { ",\x01,one,,two,/,,three,,", "two",   1 },

    { ",\x01,one,,two,/,,three,,", "three", 1 },

    { ",\x01,one,,two,/,,three,,", "\x01",  0 },

    { ",\x01,one,,two,/,,three,,", "/",     0 },

};

const size_t ap_test_token_cases_len = sizeof(ap_test_token_cases) /

                                       sizeof(ap_test_token_cases[0]);

HTTPD_START_LOOP_TEST(find_token_correctly_parses_token_list, ap_test_token_cases_len)

{

    const struct ap_test_token_case *c = &ap_test_token_cases[_i];

    int result;

    result = ap_find_token(g_pool, c->list, c->token);

    ck_assert_int_eq(result, c->expected);

}

END_TEST

/*

 * Test Case Boilerplate

 */

HTTPD_BEGIN_TEST_CASE_WITH_FIXTURE(util, util_setup, util_teardown)

#include "test/unit/util.tests"

HTTPD_END_TEST_CASE