/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://opensource.org/licenses/CDDL-1.0.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */

/*
 * Copyright 2013 Saso Kiselkov. All rights reserved.
 */

/*
 * This is just to keep the compiler happy about sys/time.h not declaring
 * gettimeofday due to -D_KERNEL (we can do this since we're actually
 * running in userspace, but we need -D_KERNEL for the remaining SHA2 code).
 */
#ifdef  _KERNEL
#undef  _KERNEL
#endif

#include <sys/varargs.h>
#include <stdlib.h>
#include <strings.h>
#include <stdio.h>
#include <sys/time.h>
#define _SHA2_IMPL
#include <sys/sha2.h>
#include <note.h>

/*
 * Test messages from:
 * http://csrc.nist.gov/groups/ST/toolkit/documents/Examples/SHA_All.pdf
 */

const char      *test_msg0 = "abc";
const char      *test_msg1 = "abcdbcdecdefdefgefghfghighijhijkijkljklmklmn"
        "lmnomnopnopq";
const char      *test_msg2 = "abcdefghbcdefghicdefghijdefghijkefghijklfghi"
        "jklmghijklmnhijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu";

/*
 * Test digests from:
 * http://csrc.nist.gov/groups/ST/toolkit/documents/Examples/SHA_All.pdf
 */
const uint8_t   sha256_test_digests[][32] = {
        {
                /* for test_msg0 */
                0xBA, 0x78, 0x16, 0xBF, 0x8F, 0x01, 0xCF, 0xEA,
                0x41, 0x41, 0x40, 0xDE, 0x5D, 0xAE, 0x22, 0x23,
                0xB0, 0x03, 0x61, 0xA3, 0x96, 0x17, 0x7A, 0x9C,
                0xB4, 0x10, 0xFF, 0x61, 0xF2, 0x00, 0x15, 0xAD
        },
        {
                /* for test_msg1 */
                0x24, 0x8D, 0x6A, 0x61, 0xD2, 0x06, 0x38, 0xB8,
                0xE5, 0xC0, 0x26, 0x93, 0x0C, 0x3E, 0x60, 0x39,
                0xA3, 0x3C, 0xE4, 0x59, 0x64, 0xFF, 0x21, 0x67,
                0xF6, 0xEC, 0xED, 0xD4, 0x19, 0xDB, 0x06, 0xC1
        }
        /* no test vector for test_msg2 */
};

const uint8_t   sha384_test_digests[][48] = {
        {
                /* for test_msg0 */
                0xCB, 0x00, 0x75, 0x3F, 0x45, 0xA3, 0x5E, 0x8B,
                0xB5, 0xA0, 0x3D, 0x69, 0x9A, 0xC6, 0x50, 0x07,
                0x27, 0x2C, 0x32, 0xAB, 0x0E, 0xDE, 0xD1, 0x63,
                0x1A, 0x8B, 0x60, 0x5A, 0x43, 0xFF, 0x5B, 0xED,
                0x80, 0x86, 0x07, 0x2B, 0xA1, 0xE7, 0xCC, 0x23,
                0x58, 0xBA, 0xEC, 0xA1, 0x34, 0xC8, 0x25, 0xA7
        },
        {
                /* no test vector for test_msg1 */
                0
        },
        {
                /* for test_msg2 */
                0x09, 0x33, 0x0C, 0x33, 0xF7, 0x11, 0x47, 0xE8,
                0x3D, 0x19, 0x2F, 0xC7, 0x82, 0xCD, 0x1B, 0x47,
                0x53, 0x11, 0x1B, 0x17, 0x3B, 0x3B, 0x05, 0xD2,
                0x2F, 0xA0, 0x80, 0x86, 0xE3, 0xB0, 0xF7, 0x12,
                0xFC, 0xC7, 0xC7, 0x1A, 0x55, 0x7E, 0x2D, 0xB9,
                0x66, 0xC3, 0xE9, 0xFA, 0x91, 0x74, 0x60, 0x39
        }
};

const uint8_t   sha512_test_digests[][64] = {
        {
                /* for test_msg0 */
                0xDD, 0xAF, 0x35, 0xA1, 0x93, 0x61, 0x7A, 0xBA,
                0xCC, 0x41, 0x73, 0x49, 0xAE, 0x20, 0x41, 0x31,
                0x12, 0xE6, 0xFA, 0x4E, 0x89, 0xA9, 0x7E, 0xA2,
                0x0A, 0x9E, 0xEE, 0xE6, 0x4B, 0x55, 0xD3, 0x9A,
                0x21, 0x92, 0x99, 0x2A, 0x27, 0x4F, 0xC1, 0xA8,
                0x36, 0xBA, 0x3C, 0x23, 0xA3, 0xFE, 0xEB, 0xBD,
                0x45, 0x4D, 0x44, 0x23, 0x64, 0x3C, 0xE8, 0x0E,
                0x2A, 0x9A, 0xC9, 0x4F, 0xA5, 0x4C, 0xA4, 0x9F
        },
        {
                /* no test vector for test_msg1 */
                0
        },
        {
                /* for test_msg2 */
                0x8E, 0x95, 0x9B, 0x75, 0xDA, 0xE3, 0x13, 0xDA,
                0x8C, 0xF4, 0xF7, 0x28, 0x14, 0xFC, 0x14, 0x3F,
                0x8F, 0x77, 0x79, 0xC6, 0xEB, 0x9F, 0x7F, 0xA1,
                0x72, 0x99, 0xAE, 0xAD, 0xB6, 0x88, 0x90, 0x18,
                0x50, 0x1D, 0x28, 0x9E, 0x49, 0x00, 0xF7, 0xE4,
                0x33, 0x1B, 0x99, 0xDE, 0xC4, 0xB5, 0x43, 0x3A,
                0xC7, 0xD3, 0x29, 0xEE, 0xB6, 0xDD, 0x26, 0x54,
                0x5E, 0x96, 0xE5, 0x5B, 0x87, 0x4B, 0xE9, 0x09
        }
};

const uint8_t   sha512_224_test_digests[][28] = {
        {
                /* for test_msg0 */
                0x46, 0x34, 0x27, 0x0F, 0x70, 0x7B, 0x6A, 0x54,
                0xDA, 0xAE, 0x75, 0x30, 0x46, 0x08, 0x42, 0xE2,
                0x0E, 0x37, 0xED, 0x26, 0x5C, 0xEE, 0xE9, 0xA4,
                0x3E, 0x89, 0x24, 0xAA
        },
        {
                /* no test vector for test_msg1 */
                0
        },
        {
                /* for test_msg2 */
                0x23, 0xFE, 0xC5, 0xBB, 0x94, 0xD6, 0x0B, 0x23,
                0x30, 0x81, 0x92, 0x64, 0x0B, 0x0C, 0x45, 0x33,
                0x35, 0xD6, 0x64, 0x73, 0x4F, 0xE4, 0x0E, 0x72,
                0x68, 0x67, 0x4A, 0xF9
        }
};

const uint8_t   sha512_256_test_digests[][32] = {
        {
                /* for test_msg0 */
                0x53, 0x04, 0x8E, 0x26, 0x81, 0x94, 0x1E, 0xF9,
                0x9B, 0x2E, 0x29, 0xB7, 0x6B, 0x4C, 0x7D, 0xAB,
                0xE4, 0xC2, 0xD0, 0xC6, 0x34, 0xFC, 0x6D, 0x46,
                0xE0, 0xE2, 0xF1, 0x31, 0x07, 0xE7, 0xAF, 0x23
        },
        {
                /* no test vector for test_msg1 */
                0
        },
        {
                /* for test_msg2 */
                0x39, 0x28, 0xE1, 0x84, 0xFB, 0x86, 0x90, 0xF8,
                0x40, 0xDA, 0x39, 0x88, 0x12, 0x1D, 0x31, 0xBE,
                0x65, 0xCB, 0x9D, 0x3E, 0xF8, 0x3E, 0xE6, 0x14,
                0x6F, 0xEA, 0xC8, 0x61, 0xE1, 0x9B, 0x56, 0x3A
        }
};

/*
 * Local reimplementation of cmn_err, since it's used in sha2.c.
 */
/*ARGSUSED*/
void
cmn_err(int level, char *format, ...)
{
        va_list ap;
        va_start(ap, format);
        /* LINTED: E_SEC_PRINTF_VAR_FMT */
        (void) vfprintf(stderr, format, ap);
        va_end(ap);
}

int
main(int argc, char *argv[])
{
        boolean_t       failed = B_FALSE;
        uint64_t        cpu_mhz = 0;

        if (argc == 2)
                cpu_mhz = atoi(argv[1]);

#define SHA2_ALGO_TEST(_m, mode, diglen, testdigest)                    \
        do {                                                            \
                SHA2_CTX                ctx;                            \
                uint8_t                 digest[diglen / 8];             \
                SHA2Init(SHA ## mode ## _MECH_INFO_TYPE, &ctx);         \
                SHA2Update(&ctx, _m, strlen(_m));                       \
                SHA2Final(digest, &ctx);                                \
                (void) printf("SHA%-9sMessage: " #_m                    \
                    "\tResult: ", #mode);                               \
                if (bcmp(digest, testdigest, diglen / 8) == 0) {        \
                        (void) printf("OK\n");                          \
                } else {                                                \
                        (void) printf("FAILED!\n");                     \
                        failed = B_TRUE;                                \
                }                                                       \
                NOTE(CONSTCOND)                                         \
        } while (0)

#define SHA2_PERF_TEST(mode, diglen)                                    \
        do {                                                            \
                SHA2_CTX        ctx;                                    \
                uint8_t         digest[diglen / 8];                     \
                uint8_t         block[131072];                          \
                uint64_t        delta;                                  \
                double          cpb = 0;                                \
                int             i;                                      \
                struct timeval  start, end;                             \
                bzero(block, sizeof (block));                           \
                (void) gettimeofday(&start, NULL);                      \
                SHA2Init(SHA ## mode ## _MECH_INFO_TYPE, &ctx);         \
                for (i = 0; i < 8192; i++)                              \
                        SHA2Update(&ctx, block, sizeof (block));        \
                SHA2Final(digest, &ctx);                                \
                (void) gettimeofday(&end, NULL);                        \
                delta = (end.tv_sec * 1000000llu + end.tv_usec) -       \
                    (start.tv_sec * 1000000llu + start.tv_usec);        \
                if (cpu_mhz != 0) {                                     \
                        cpb = (cpu_mhz * 1e6 * ((double)delta /         \
                            1000000)) / (8192 * 128 * 1024);            \
                }                                                       \
                (void) printf("SHA%-9s%llu us (%.02f CPB)\n", #mode,    \
                    (u_longlong_t)delta, cpb);                          \
                NOTE(CONSTCOND)                                         \
        } while (0)

        (void) printf("Running algorithm correctness tests:\n");
        SHA2_ALGO_TEST(test_msg0, 256, 256, sha256_test_digests[0]);
        SHA2_ALGO_TEST(test_msg1, 256, 256, sha256_test_digests[1]);
        SHA2_ALGO_TEST(test_msg0, 384, 384, sha384_test_digests[0]);
        SHA2_ALGO_TEST(test_msg2, 384, 384, sha384_test_digests[2]);
        SHA2_ALGO_TEST(test_msg0, 512, 512, sha512_test_digests[0]);
        SHA2_ALGO_TEST(test_msg2, 512, 512, sha512_test_digests[2]);
        SHA2_ALGO_TEST(test_msg0, 512_224, 224, sha512_224_test_digests[0]);
        SHA2_ALGO_TEST(test_msg2, 512_224, 224, sha512_224_test_digests[2]);
        SHA2_ALGO_TEST(test_msg0, 512_256, 256, sha512_256_test_digests[0]);
        SHA2_ALGO_TEST(test_msg2, 512_256, 256, sha512_256_test_digests[2]);

        if (failed)
                return (1);

        (void) printf("Running performance tests (hashing 1024 MiB of "
            "data):\n");
        SHA2_PERF_TEST(256, 256);
        SHA2_PERF_TEST(512, 512);

        return (0);
}