/*-
 * Copyright (c) 2006, Simon L. Nielsen <simon@FreeBSD.org>
 * 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 AUTHOR 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 AUTHOR 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 <sys/cdefs.h>
#include <mp.h>
#include <stdio.h>
#include <string.h>
#include <sysexits.h>

MINT *c0, *c1, *c2, *c3, *c5, *c6, *c8, *c10, *c14, *c15, *c25, \
    *c42,*c43, *c44, *c45, *t0, *t1;
static int tnr = 0;

static void
testmcmp(const MINT *mp1, const MINT *mp2, const char *tname)
{

        if (mp_mcmp(mp1, mp2) == 0)
                printf("ok %d - %s\n", ++tnr, tname);
        else
                printf("not ok - %d %s\n", ++tnr, tname);
}

static void
testsimpel(void)
{
        const char str42[] = "2a";
        MINT *t2;
        char *s;

        mp_madd(c42, c1, t0);
        testmcmp(c43, t0, "madd0");
        mp_madd(t0, c1, t0);
        testmcmp(c44, t0, "madd1");
        mp_msub(t0, c1, t0);
        testmcmp(c43, t0, "msub0");
        mp_msub(t0, c1, t0);
        testmcmp(c42, t0, "msub1");
        mp_move(c42, t0);
        testmcmp(c42, t0, "move0");

        t2 = mp_xtom(str42);
        testmcmp(c42, t2, "xtom");
        s = mp_mtox(t2);
        if (strcmp(str42, s) == 0)
                printf("ok %d - %s\n", ++tnr, "mtox0");
        else
                printf("not ok %d - %s\n", ++tnr, "mtox0");
        mp_mfree(t2);
}

static void
testgcd(void)
{

        mp_gcd(c10, c15, t0);
        testmcmp(t0, c5, "gcd0");
}

static void
testmsqrt(void)
{

        mp_msqrt(c25, t0, t1);
        testmcmp(t0, c5, "msqrt0");
        testmcmp(t1, c0, "msqrt1");
        mp_msqrt(c42, t0, t1);
        testmcmp(t0, c6, "msqrt2");
        testmcmp(t1, c6, "msqrt3");
}

static void
testdiv(void)
{
        short ro;
        MINT *t2;

        mp_mdiv(c42, c5, t0, t1);
        testmcmp(t0, c8, "mdiv0");
        testmcmp(t1, c2, "mdiv1");

        mp_mdiv(c10, c8, t0, t1);
        testmcmp(t0, c1, "mdiv2");
        testmcmp(t1, c2, "mdiv3");

        mp_sdiv(c42, 5, t0, &ro);
        testmcmp(t0, c8, "sdiv0");
        t2 = mp_itom(ro); // Simpler to use common testmcmp()
        testmcmp(t2, c2, "sdiv1");
        mp_mfree(t2);

        mp_sdiv(c10, 8, t0, &ro);
        testmcmp(t0, c1, "sdiv2");
        t2 = mp_itom(ro); // Simpler to use common testmcmp()
        testmcmp(t2, c2, "sdiv3");
        mp_mfree(t2);
}

static void
testmult(void)
{

        mp_mult(c5, c2, t0);
        testmcmp(t0, c10, "mmult0");
        mp_mult(c3, c14, t0);
        testmcmp(t0, c42, "mmult1");
}

static void
testpow(void)
{

        mp_pow(c2, c3, c10, t0);
        testmcmp(t0, c8, "pow0");
        mp_pow(c2, c3, c3, t0);
        testmcmp(t0, c2, "pow1");
        mp_rpow(c2, 3, t0);
        testmcmp(t0, c8, "rpow0");
}

/*
 * This program performs some very basic tests of libmp(3).  It is by
 * no means expected to perform a complete test of the library for
 * correctness, but is meant to test the API to make sure libmp (or
 * libcrypto) updates don't totally break the library.
 */
int
main(int argc, char *argv[])
{

        printf("1..25\n");

        /*
         * Init "constants" variables - done in this somewhat
         * cumbersome way to in theory be able to check for memory
         * leaks.
         */
        c0 = mp_itom(0);
        c1 = mp_itom(1);
        c2 = mp_itom(2);
        c3 = mp_itom(3);
        c5 = mp_itom(5);
        c6 = mp_itom(6);
        c8 = mp_itom(8);
        c10 = mp_itom(10);
        c14 = mp_itom(14);
        c15 = mp_itom(15);
        c25 = mp_itom(25);
        c42 = mp_itom(42);
        c43 = mp_itom(43);
        c44 = mp_itom(44);
        c45 = mp_itom(45);

        // Init temp variables
        t0 = mp_itom(0);
        t1 = mp_itom(0);

        // Run tests
        testsimpel();
        testgcd();
        testdiv();
        testmult();
        testpow();
        testmsqrt();

        // Cleanup
        mp_mfree(c0);
        mp_mfree(c1);
        mp_mfree(c2);
        mp_mfree(c3);
        mp_mfree(c5);
        mp_mfree(c6);
        mp_mfree(c8);
        mp_mfree(c10);
        mp_mfree(c14);
        mp_mfree(c15);
        mp_mfree(c25);
        mp_mfree(c42);
        mp_mfree(c43);
        mp_mfree(c44);
        mp_mfree(c45);
        mp_mfree(t0);
        mp_mfree(t1);

        return (EX_OK);
}