/*
 *  Self-test demonstration program
 *
 *  Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
 *  SPDX-License-Identifier: Apache-2.0
 *
 *  Licensed 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.
 *
 *  This file is part of mbed TLS (https://tls.mbed.org)
 */

#if !defined(MBEDTLS_CONFIG_FILE)
#include "mbedtls/config.h"
#else
#include MBEDTLS_CONFIG_FILE
#endif

#include "mbedtls/entropy.h"
#include "mbedtls/hmac_drbg.h"
#include "mbedtls/ctr_drbg.h"
#include "mbedtls/dhm.h"
#include "mbedtls/gcm.h"
#include "mbedtls/ccm.h"
#include "mbedtls/md2.h"
#include "mbedtls/md4.h"
#include "mbedtls/md5.h"
#include "mbedtls/ripemd160.h"
#include "mbedtls/sha1.h"
#include "mbedtls/sha256.h"
#include "mbedtls/sha512.h"
#include "mbedtls/arc4.h"
#include "mbedtls/des.h"
#include "mbedtls/aes.h"
#include "mbedtls/camellia.h"
#include "mbedtls/base64.h"
#include "mbedtls/bignum.h"
#include "mbedtls/rsa.h"
#include "mbedtls/x509.h"
#include "mbedtls/xtea.h"
#include "mbedtls/pkcs5.h"
#include "mbedtls/ecp.h"
#include "mbedtls/timing.h"

#include <stdio.h>
#include <string.h>

#if defined(MBEDTLS_PLATFORM_C)
#include "mbedtls/platform.h"
#else
#include <stdio.h>
#define mbedtls_printf     printf
#define mbedtls_snprintf   snprintf
#endif

#if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
#include "mbedtls/memory_buffer_alloc.h"
#endif

static int test_snprintf( size_t n, const char ref_buf[10], int ref_ret )
{
    int ret;
    char buf[10] = "xxxxxxxxx";
    const char ref[10] = "xxxxxxxxx";

    ret = mbedtls_snprintf( buf, n, "%s", "123" );
    if( ret < 0 || (size_t) ret >= n )
        ret = -1;

    if( strncmp( ref_buf, buf, sizeof( buf ) ) != 0 ||
        ref_ret != ret ||
        memcmp( buf + n, ref + n, sizeof( buf ) - n ) != 0 )
    {
        return( 1 );
    }

    return( 0 );
}

static int run_test_snprintf( void )
{
    return( test_snprintf( 0, "xxxxxxxxx",  -1 ) != 0 ||
            test_snprintf( 1, "",           -1 ) != 0 ||
            test_snprintf( 2, "1",          -1 ) != 0 ||
            test_snprintf( 3, "12",         -1 ) != 0 ||
            test_snprintf( 4, "123",         3 ) != 0 ||
            test_snprintf( 5, "123",         3 ) != 0 );
}

#if defined(MBEDTLS_SELF_TEST)
#if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
int mbedtls_memory_buffer_alloc_free_and_self_test( int verbose )
{
    if( verbose != 0 )
    {
#if defined(MBEDTLS_MEMORY_DEBUG)
        mbedtls_memory_buffer_alloc_status( );
#endif
    }
    mbedtls_memory_buffer_alloc_free( );
    return( mbedtls_memory_buffer_alloc_self_test( verbose ) );
}
#endif

typedef struct
{
    const char *name;
    int ( *function )( int );
} selftest_t;

const selftest_t selftests[] =
{
#if defined(MBEDTLS_MD2_C)
    {"md2", mbedtls_md2_self_test},
#endif
#if defined(MBEDTLS_MD4_C)
    {"md4", mbedtls_md4_self_test},
#endif
#if defined(MBEDTLS_MD5_C)
    {"md5", mbedtls_md5_self_test},
#endif
#if defined(MBEDTLS_RIPEMD160_C)
    {"ripemd160", mbedtls_ripemd160_self_test},
#endif
#if defined(MBEDTLS_SHA1_C)
    {"sha1", mbedtls_sha1_self_test},
#endif
#if defined(MBEDTLS_SHA256_C)
    {"sha256", mbedtls_sha256_self_test},
#endif
#if defined(MBEDTLS_SHA512_C)
    {"sha512", mbedtls_sha512_self_test},
#endif
#if defined(MBEDTLS_ARC4_C)
    {"arc4", mbedtls_arc4_self_test},
#endif
#if defined(MBEDTLS_DES_C)
    {"des", mbedtls_des_self_test},
#endif
#if defined(MBEDTLS_AES_C)
    {"aes", mbedtls_aes_self_test},
#endif
#if defined(MBEDTLS_GCM_C) && defined(MBEDTLS_AES_C)
    {"gcm", mbedtls_gcm_self_test},
#endif
#if defined(MBEDTLS_CCM_C) && defined(MBEDTLS_AES_C)
    {"ccm", mbedtls_ccm_self_test},
#endif
#if defined(MBEDTLS_BASE64_C)
    {"base64", mbedtls_base64_self_test},
#endif
#if defined(MBEDTLS_BIGNUM_C)
    {"mpi", mbedtls_mpi_self_test},
#endif
#if defined(MBEDTLS_RSA_C)
    {"rsa", mbedtls_rsa_self_test},
#endif
#if defined(MBEDTLS_X509_USE_C)
    {"x509", mbedtls_x509_self_test},
#endif
#if defined(MBEDTLS_XTEA_C)
    {"xtea", mbedtls_xtea_self_test},
#endif
#if defined(MBEDTLS_CAMELLIA_C)
    {"camellia", mbedtls_camellia_self_test},
#endif
#if defined(MBEDTLS_CTR_DRBG_C)
    {"ctr_drbg", mbedtls_ctr_drbg_self_test},
#endif
#if defined(MBEDTLS_HMAC_DRBG_C)
    {"hmac_drbg", mbedtls_hmac_drbg_self_test},
#endif
#if defined(MBEDTLS_ECP_C)
    {"ecp", mbedtls_ecp_self_test},
#endif
#if defined(MBEDTLS_DHM_C)
    {"dhm", mbedtls_dhm_self_test},
#endif
#if defined(MBEDTLS_ENTROPY_C)
    {"entropy", mbedtls_entropy_self_test},
#endif
#if defined(MBEDTLS_PKCS5_C)
    {"pkcs5", mbedtls_pkcs5_self_test},
#endif
/* Slower test after the faster ones */
#if defined(MBEDTLS_TIMING_C)
    {"timing", mbedtls_timing_self_test},
#endif
/* Heap test comes last */
#if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
    {"memory_buffer_alloc", mbedtls_memory_buffer_alloc_free_and_self_test},
#endif
    {NULL, NULL}
};
#endif /* MBEDTLS_SELF_TEST */

int main( int argc, char *argv[] )
{
#if defined(MBEDTLS_SELF_TEST)
    const selftest_t *test;
#endif /* MBEDTLS_SELF_TEST */
    int v;
    int suites_tested = 0, suites_failed = 0;
#if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
    unsigned char buf[1000000];
#endif
    void *pointer;

    /*
     * The C standard doesn't guarantee that all-bits-0 is the representation
     * of a NULL pointer. We do however use that in our code for initializing
     * structures, which should work on every modern platform. Let's be sure.
     */
    memset( &pointer, 0, sizeof( void * ) );
    if( pointer != NULL )
    {
        mbedtls_printf( "all-bits-zero is not a NULL pointer\n" );
        return( EXIT_FAILURE );
    }

    /*
     * Make sure we have a snprintf that correctly zero-terminates
     */
    if( run_test_snprintf() != 0 )
    {
        mbedtls_printf( "the snprintf implementation is broken\n" );
        return( EXIT_FAILURE );
    }

    if( argc == 2 && strcmp( argv[1], "-quiet" ) == 0 )
        v = 0;
    else
    {
        v = 1;
        mbedtls_printf( "\n" );
    }

#if defined(MBEDTLS_SELF_TEST)

#if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
    mbedtls_memory_buffer_alloc_init( buf, sizeof(buf) );
#endif

    for( test = selftests; test->name != NULL; test++ )
    {
        if( test->function( v )  != 0 )
        {
            suites_failed++;
        }
        suites_tested++;
    }

#else
    mbedtls_printf( " MBEDTLS_SELF_TEST not defined.\n" );
#endif

    if( v != 0 )
    {
        mbedtls_printf( "  Executed %d test suites\n\n", suites_tested );

        if( suites_failed > 0)
        {
            mbedtls_printf( "  [ %d tests FAILED ]\n\n", suites_failed );
        }
        else
        {
            mbedtls_printf( "  [ All tests passed ]\n\n" );
        }
#if defined(_WIN32)
        mbedtls_printf( "  Press Enter to exit this program.\n" );
        fflush( stdout ); getchar();
#endif
    }

    if( suites_failed > 0)
        return( EXIT_FAILURE );

    return( EXIT_SUCCESS );
}