/* BEGIN_HEADER */
#include <stdint.h>

#if defined(MBEDTLS_PSA_CRYPTO_SPM)
#include "spm/psa_defs.h"
#endif
#include "psa/crypto.h"

/* Some tests in this module configure entropy sources. */
#include "psa_crypto_invasive.h"

#include "mbedtls/entropy.h"
#include "mbedtls/entropy_poll.h"

#define ENTROPY_SOURCE_PLATFORM                 0x00000001
#define ENTROPY_SOURCE_TIMING                   0x00000002
#define ENTROPY_SOURCE_HAVEGE                   0x00000004
#define ENTROPY_SOURCE_HARDWARE                 0x00000008
#define ENTROPY_SOURCE_NV_SEED                  0x00000010
static uint32_t custom_entropy_sources_mask;

/* This is a modified version of mbedtls_entropy_init() from entropy.c
 * which chooses entropy sources dynamically. */
static void custom_entropy_init( mbedtls_entropy_context *ctx )
{
    ctx->source_count = 0;
    memset( ctx->source, 0, sizeof( ctx->source ) );

#if defined(MBEDTLS_THREADING_C)
    mbedtls_mutex_init( &ctx->mutex );
#endif

    ctx->accumulator_started = 0;
#if defined(MBEDTLS_ENTROPY_SHA512_ACCUMULATOR)
    mbedtls_sha512_init( &ctx->accumulator );
#else
    mbedtls_sha256_init( &ctx->accumulator );
#endif
#if defined(MBEDTLS_HAVEGE_C)
    mbedtls_havege_init( &ctx->havege_data );
#endif

#if !defined(MBEDTLS_NO_PLATFORM_ENTROPY)
    if( custom_entropy_sources_mask & ENTROPY_SOURCE_PLATFORM )
        mbedtls_entropy_add_source( ctx, mbedtls_platform_entropy_poll, NULL,
                                    MBEDTLS_ENTROPY_MIN_PLATFORM,
                                    MBEDTLS_ENTROPY_SOURCE_STRONG );
#endif
#if defined(MBEDTLS_TIMING_C)
    if( custom_entropy_sources_mask & ENTROPY_SOURCE_TIMING )
        mbedtls_entropy_add_source( ctx, mbedtls_hardclock_poll, NULL,
                                    MBEDTLS_ENTROPY_MIN_HARDCLOCK,
                                    MBEDTLS_ENTROPY_SOURCE_WEAK );
#endif
#if defined(MBEDTLS_HAVEGE_C)
    if( custom_entropy_sources_mask & ENTROPY_SOURCE_HAVEGE )
        mbedtls_entropy_add_source( ctx, mbedtls_havege_poll, &ctx->havege_data,
                                    MBEDTLS_ENTROPY_MIN_HAVEGE,
                                    MBEDTLS_ENTROPY_SOURCE_STRONG );
#endif
#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
    if( custom_entropy_sources_mask & ENTROPY_SOURCE_HARDWARE )
        mbedtls_entropy_add_source( ctx, mbedtls_hardware_poll, NULL,
                                    MBEDTLS_ENTROPY_MIN_HARDWARE,
                                    MBEDTLS_ENTROPY_SOURCE_STRONG );
#endif
#if defined(MBEDTLS_ENTROPY_NV_SEED)
    if( custom_entropy_sources_mask & ENTROPY_SOURCE_NV_SEED )
        mbedtls_entropy_add_source( ctx, mbedtls_nv_seed_poll, NULL,
                                    MBEDTLS_ENTROPY_BLOCK_SIZE,
                                    MBEDTLS_ENTROPY_SOURCE_STRONG );
    ctx->initial_entropy_run = 0;
#endif
}

/* END_HEADER */

/* BEGIN_DEPENDENCIES
 * depends_on:MBEDTLS_PSA_CRYPTO_C
 * END_DEPENDENCIES
 */

/* BEGIN_CASE */
void init_deinit( int count )
{
    psa_status_t status;
    int i;
    for( i = 0; i < count; i++ )
    {
        status = psa_crypto_init( );
        TEST_ASSERT( status == PSA_SUCCESS );
        status = psa_crypto_init( );
        TEST_ASSERT( status == PSA_SUCCESS );
        mbedtls_psa_crypto_free( );
    }
}
/* END_CASE */

/* BEGIN_CASE */
void deinit_without_init( int count )
{
    int i;
    for( i = 0; i < count; i++ )
    {
        TEST_ASSERT( psa_crypto_init( ) == PSA_SUCCESS );
        mbedtls_psa_crypto_free( );
    }
    mbedtls_psa_crypto_free( );
}
/* END_CASE */

/* BEGIN_CASE */
void validate_module_init_generate_random( int count )
{
    psa_status_t status;
    uint8_t random[10] = { 0 };
    int i;
    for( i = 0; i < count; i++ )
    {
        status = psa_crypto_init( );
        TEST_ASSERT( status == PSA_SUCCESS );
        mbedtls_psa_crypto_free( );
    }
    status = psa_generate_random( random, sizeof( random ) );
    TEST_ASSERT( status == PSA_ERROR_BAD_STATE );
}
/* END_CASE */

/* BEGIN_CASE */
void validate_module_init_key_based( int count )
{
    psa_status_t status;
    uint8_t data[10] = { 0 };
    int i;
    for( i = 0; i < count; i++ )
    {
        status = psa_crypto_init( );
        TEST_ASSERT( status == PSA_SUCCESS );
        mbedtls_psa_crypto_free( );
    }
    status = psa_import_key( 1, PSA_KEY_TYPE_RAW_DATA, data, sizeof( data ) );
    TEST_ASSERT( status == PSA_ERROR_BAD_STATE );
}
/* END_CASE */

/* BEGIN_CASE */
void custom_entropy_sources( int sources_arg, int expected_init_status_arg )
{
    psa_status_t expected_init_status = expected_init_status_arg;
    int inited = 0;
    uint8_t random[10] = { 0 };

    custom_entropy_sources_mask = sources_arg;
    TEST_ASSERT( mbedtls_psa_crypto_configure_entropy_sources(
                     custom_entropy_init, mbedtls_entropy_free ) ==
                 PSA_SUCCESS );

    TEST_ASSERT( psa_crypto_init( ) == expected_init_status );
    if( expected_init_status != PSA_SUCCESS )
        goto exit;
    inited = 1;

    TEST_ASSERT( psa_generate_random( random, sizeof( random ) ) ==
                 PSA_SUCCESS );

exit:
    if( inited )
        mbedtls_psa_crypto_free( );
}
/* END_CASE */