/* $NetBSD: t_memcpy.c,v 1.6 2017/01/11 18:05:54 christos Exp $ */

/*-
 * Copyright (c) 2010 The NetBSD Foundation, Inc.
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``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 FOUNDATION OR CONTRIBUTORS
 * 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 <atf-c.h>

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <md5.h>

#include <sys/types.h>

#define ALIGNMENTS 16
#define LENGTHS     4
#define BLOCKTYPES 4

MD5_CTX mc[1];

typedef unsigned char testBlock_t[ALIGNMENTS * LENGTHS];

testBlock_t bss1, bss2;

unsigned char *start[BLOCKTYPES] = {
                bss1, bss2
};

char result[100];
const char goodResult[] = "7b405d24bc03195474c70ddae9e1f8fb";

static void
runTest(unsigned char *b1, unsigned char *b2)
{
        int     i, j, k, m;
        size_t  n;

        for (i = 0; i < ALIGNMENTS; ++i) {
                for (j = 0; j < ALIGNMENTS; ++j) {
                        k = sizeof(testBlock_t) - (i > j ? i : j);
                        for (m = 0; m < k; ++m) {
                                for (n = 0; n < sizeof(testBlock_t); ++n) {
                                        b1[n] = (unsigned char)random();
                                        b2[n] = (unsigned char)random();
                                }
                                memcpy(b1 + i, b2 + j, m);
                                MD5Update(mc, b1, sizeof(testBlock_t));
                                MD5Update(mc, b2, sizeof(testBlock_t));
                        }
                }
        }
}

ATF_TC(memcpy_basic);
ATF_TC_HEAD(memcpy_basic, tc)
{
        atf_tc_set_md_var(tc, "descr", "Test memcpy results");
}

ATF_TC_BODY(memcpy_basic, tc)
{
        int i, j;
        testBlock_t auto1, auto2;

        start[2] = auto1;
        start[3] = auto2;

        srandom(0L);
        MD5Init(mc);
        for (i = 0; i < BLOCKTYPES; ++i)
                for (j = 0; j < BLOCKTYPES; ++j)
                        if (i != j)
                                runTest(start[i], start[j]);
        MD5End(mc, result);
        ATF_REQUIRE_EQ_MSG(strcmp(result, goodResult), 0, "%s != %s",
            result, goodResult);
}

ATF_TC(memccpy_simple);
ATF_TC_HEAD(memccpy_simple, tc)
{
        atf_tc_set_md_var(tc, "descr", "Test memccpy(3) results");
}

ATF_TC_BODY(memccpy_simple, tc)
{
        char buf[100];
        char c = ' ';

        (void)memset(buf, c, sizeof(buf));

        ATF_CHECK(memccpy(buf, "foo bar", c, sizeof(buf)) != NULL);
        ATF_CHECK(buf[4] == c);

        ATF_CHECK(memccpy(buf, "foo bar", '\0', sizeof(buf) - 1) != NULL);
        ATF_CHECK(buf[8] == c);

        ATF_CHECK(memccpy(buf, "foo bar", 'x', 7) == NULL);
        ATF_CHECK(strncmp(buf, "foo bar", 7) == 0);

        ATF_CHECK(memccpy(buf, "xxxxxxx", 'r', 7) == NULL);
        ATF_CHECK(strncmp(buf, "xxxxxxx", 7) == 0);
}

ATF_TC(memcpy_return);
ATF_TC_HEAD(memcpy_return, tc)
{
        atf_tc_set_md_var(tc, "descr", "Test memcpy(3) return value");
}

ATF_TC_BODY(memcpy_return, tc)
{
        char *b = (char *)0x1;
        char c[2];
        ATF_REQUIRE_EQ(memcpy(b, b, 0), b);
        ATF_REQUIRE_EQ(memcpy(c, "ab", sizeof(c)), c);
}

ATF_TP_ADD_TCS(tp)
{

        ATF_TP_ADD_TC(tp, memcpy_basic);
        ATF_TP_ADD_TC(tp, memcpy_return);
        ATF_TP_ADD_TC(tp, memccpy_simple);

        return atf_no_error();
}