#line 1 "main_test.function"
SUITE_PRE_DEP
#define TEST_SUITE_ACTIVE

int verify_string( char **str )
{
    if( (*str)[0] != '"' ||
        (*str)[strlen( *str ) - 1] != '"' )
    {
        mbedtls_fprintf( stderr,
            "Expected string (with \"\") for parameter and got: %s\n", *str );
        return( -1 );
    }

    (*str)++;
    (*str)[strlen( *str ) - 1] = '\0';

    return( 0 );
}

int verify_int( char *str, int *value )
{
    size_t i;
    int minus = 0;
    int digits = 1;
    int hex = 0;

    for( i = 0; i < strlen( str ); i++ )
    {
        if( i == 0 && str[i] == '-' )
        {
            minus = 1;
            continue;
        }

        if( ( ( minus && i == 2 ) || ( !minus && i == 1 ) ) &&
            str[i - 1] == '0' && str[i] == 'x' )
        {
            hex = 1;
            continue;
        }

        if( ! ( ( str[i] >= '0' && str[i] <= '9' ) ||
                ( hex && ( ( str[i] >= 'a' && str[i] <= 'f' ) ||
                           ( str[i] >= 'A' && str[i] <= 'F' ) ) ) ) )
        {
            digits = 0;
            break;
        }
    }

    if( digits )
    {
        if( hex )
            *value = strtol( str, NULL, 16 );
        else
            *value = strtol( str, NULL, 10 );

        return( 0 );
    }

MAPPING_CODE

    mbedtls_fprintf( stderr,
                    "Expected integer for parameter and got: %s\n", str );
    return( KEY_VALUE_MAPPING_NOT_FOUND );
}


/*----------------------------------------------------------------------------*/
/* Test Case code */

FUNCTION_CODE
SUITE_POST_DEP

#line !LINE_NO! "main_test.function"


/*----------------------------------------------------------------------------*/
/* Test dispatch code */

int dep_check( char *str )
{
    if( str == NULL )
        return( 1 );

DEP_CHECK_CODE
#line !LINE_NO! "main_test.function"

    return( DEPENDENCY_NOT_SUPPORTED );
}

int dispatch_test(int cnt, char *params[50])
{
    int ret;
    ((void) cnt);
    ((void) params);

#if defined(TEST_SUITE_ACTIVE)
    ret = DISPATCH_TEST_SUCCESS;

    // Cast to void to avoid compiler warnings
    (void)ret;

DISPATCH_FUNCTION
    {
#line !LINE_NO! "main_test.function"
        mbedtls_fprintf( stdout,
                         "FAILED\nSkipping unknown test function '%s'\n",
                         params[0] );
        fflush( stdout );
        ret = DISPATCH_TEST_FN_NOT_FOUND;
    }
#else
    ret = DISPATCH_UNSUPPORTED_SUITE;
#endif
    return( ret );
}


/*----------------------------------------------------------------------------*/
/* Main Test code */

#line !LINE_NO! "main_test.function"

#define USAGE \
    "Usage: %s [OPTIONS] files...\n\n" \
    "   Command line arguments:\n" \
    "     files...          One or more test data file. If no file is specified\n" \
    "                       the followimg default test case is used:\n" \
    "                           %s\n\n" \
    "   Options:\n" \
    "     -v | --verbose    Display full information about each test\n" \
    "     -h | --help       Display this information\n\n", \
    argv[0], \
    "TESTCASE_FILENAME"


/** Retrieve one input line into buf, which must have room for len
 * bytes. The trailing line break (if any) is stripped from the result.
 * Lines beginning with the character '#' are skipped. Lines that are
 * more than len-1 bytes long including the trailing line break are
 * truncated; note that the following bytes remain in the input stream.
 *
 * \return 0 on success, -1 on error or end of file
 */
int get_line( FILE *f, char *buf, size_t len )
{
    char *ret;

    do
    {
        ret = fgets( buf, len, f );
        if( ret == NULL )
            return( -1 );
    }
    while( buf[0] == '#' );

    ret = buf + strlen( buf );
    if( ret-- > buf && *ret == '\n' )
        *ret = '\0';
    if( ret-- > buf && *ret == '\r' )
        *ret = '\0';

    return( 0 );
}

int parse_arguments( char *buf, size_t len, char *params[50] )
{
    int cnt = 0, i;
    char *cur = buf;
    char *p = buf, *q;

    params[cnt++] = cur;

    while( *p != '\0' && p < buf + len )
    {
        if( *p == '\\' )
        {
            p++;
            p++;
            continue;
        }
        if( *p == ':' )
        {
            if( p + 1 < buf + len )
            {
                cur = p + 1;
                params[cnt++] = cur;
            }
            *p = '\0';
        }

        p++;
    }

    /* Replace newlines, question marks and colons in strings */
    for( i = 0; i < cnt; i++ )
    {
        p = params[i];
        q = params[i];

        while( *p != '\0' )
        {
            if( *p == '\\' && *(p + 1) == 'n' )
            {
                p += 2;
                *(q++) = '\n';
            }
            else if( *p == '\\' && *(p + 1) == ':' )
            {
                p += 2;
                *(q++) = ':';
            }
            else if( *p == '\\' && *(p + 1) == '?' )
            {
                p += 2;
                *(q++) = '?';
            }
            else
                *(q++) = *(p++);
        }
        *q = '\0';
    }

    return( cnt );
}

#if defined(__GNUC__)
/* At high optimization levels (e.g. gcc -O3), this function may be
 * inlined in run_test_snprintf. This can trigger a spurious warning about
 * potential misuse of snprintf from gcc -Wformat-truncation (observed with
 * gcc 7.2). This warning makes tests in run_test_snprintf redundant on gcc
 * only. They are still valid for other compilers. Avoid this warning by
 * forbidding inlining of this function by gcc. */
__attribute__((__noinline__))
#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";

    if( n >= sizeof( buf ) )
        return( -1 );
    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 );
}

int main(int argc, const char *argv[])
{
    /* Local Configurations and options */
    const char *default_filename = "TESTCASE_FILENAME";
    const char *test_filename = NULL;
    const char **test_files = NULL;
    int testfile_count = 0;
    int option_verbose = 0;

    /* Other Local variables */
    int arg_index = 1;
    const char *next_arg;
    int testfile_index, ret, i, cnt;
    int total_errors = 0, total_tests = 0, total_skipped = 0;
    FILE *file;
    char buf[5000];
    char *params[50];
    void *pointer;
#if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__))
    int stdout_fd = -1;
#endif /* __unix__ || __APPLE__ __MACH__ */

#if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C) && \
    !defined(TEST_SUITE_MEMORY_BUFFER_ALLOC)
    unsigned char alloc_buf[1000000];
#endif
    /* Platform setup should be called in the beginning */
    ret = platform_setup();
    if( ret != 0 )
    {
        mbedtls_fprintf( stderr,
                         "FATAL: Failed to initialize platform - error %d\n",
                         ret );
        return( -1 );
    }
#if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C) && \
    !defined(TEST_SUITE_MEMORY_BUFFER_ALLOC)
    mbedtls_memory_buffer_alloc_init( alloc_buf, sizeof(alloc_buf) );
#endif

    /*
     * 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_fprintf( stderr, "all-bits-zero is not a NULL pointer\n" );
        platform_teardown();
        return( 1 );
    }

    /*
     * Make sure we have a snprintf that correctly zero-terminates
     */
    if( run_test_snprintf() != 0 )
    {
        mbedtls_fprintf( stderr, "the snprintf implementation is broken\n" );
        platform_teardown();
        return( 1 );
    }

    while( arg_index < argc)
    {
        next_arg = argv[ arg_index ];

        if( strcmp(next_arg, "--verbose" ) == 0 ||
                 strcmp(next_arg, "-v" ) == 0 )
        {
            option_verbose = 1;
        }
        else if( strcmp(next_arg, "--help" ) == 0 ||
                 strcmp(next_arg, "-h" ) == 0 )
        {
            mbedtls_fprintf( stdout, USAGE );
            platform_teardown();
            mbedtls_exit( EXIT_SUCCESS );
        }
        else
        {
            /* Not an option, therefore treat all further arguments as the file
             * list.
             */
            test_files = &argv[ arg_index ];
            testfile_count = argc - arg_index;
        }

        arg_index++;
    }

    /* If no files were specified, assume a default */
    if ( test_files == NULL || testfile_count == 0 )
    {
        test_files = &default_filename;
        testfile_count = 1;
    }

    /* Initialize the struct that holds information about the last test */
    memset( &test_info, 0, sizeof( test_info ) );

    /* Now begin to execute the tests in the testfiles */
    for ( testfile_index = 0;
          testfile_index < testfile_count;
          testfile_index++ )
    {
        int unmet_dep_count = 0;
        char *unmet_dependencies[20];

        test_filename = test_files[ testfile_index ];

        file = fopen( test_filename, "r" );
        if( file == NULL )
        {
            mbedtls_fprintf( stderr, "Failed to open test file: %s\n",
                             test_filename );
            platform_teardown();
            return( 1 );
        }

        while( !feof( file ) )
        {
            if( unmet_dep_count > 0 )
            {
                mbedtls_fprintf( stderr,
                    "FATAL: Dep count larger than zero at start of loop\n" );
                platform_teardown();
                mbedtls_exit( MBEDTLS_EXIT_FAILURE );
            }
            unmet_dep_count = 0;

            if( ( ret = get_line( file, buf, sizeof(buf) ) ) != 0 )
                break;
            mbedtls_fprintf( stdout, "%s%.66s", test_info.failed ? "\n" : "", buf );
            mbedtls_fprintf( stdout, " " );
            for( i = strlen( buf ) + 1; i < 67; i++ )
                mbedtls_fprintf( stdout, "." );
            mbedtls_fprintf( stdout, " " );
            fflush( stdout );

            total_tests++;

            if( ( ret = get_line( file, buf, sizeof(buf) ) ) != 0 )
                break;
            cnt = parse_arguments( buf, strlen(buf), params );

            if( strcmp( params[0], "depends_on" ) == 0 )
            {
                for( i = 1; i < cnt; i++ )
                {
                    if( dep_check( params[i] ) != DEPENDENCY_SUPPORTED )
                    {
                        if( 0 == option_verbose )
                        {
                            /* Only one count is needed if not verbose */
                            unmet_dep_count++;
                            break;
                        }

                        unmet_dependencies[ unmet_dep_count ] = strdup(params[i]);
                        if(  unmet_dependencies[ unmet_dep_count ] == NULL )
                        {
                            mbedtls_fprintf( stderr, "FATAL: Out of memory\n" );
                            platform_teardown();
                            mbedtls_exit( MBEDTLS_EXIT_FAILURE );
                        }
                        unmet_dep_count++;
                    }
                }

                if( ( ret = get_line( file, buf, sizeof(buf) ) ) != 0 )
                    break;
                cnt = parse_arguments( buf, strlen(buf), params );
            }

            // If there are no unmet dependencies execute the test
            if( unmet_dep_count == 0 )
            {
                test_info.failed = 0;

#if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__))
                /* Suppress all output from the library unless we're verbose
                 * mode
                 */
                if( !option_verbose )
                {
                    stdout_fd = redirect_output( &stdout, "/dev/null" );
                    if( stdout_fd == -1 )
                    {
                        platform_teardown();
                        /* Redirection has failed with no stdout so exit */
                        exit( 1 );
                    }
                }
#endif /* __unix__ || __APPLE__ __MACH__ */

                ret = dispatch_test( cnt, params );

#if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__))
                if( !option_verbose && restore_output( &stdout, stdout_fd ) )
                {
                        /* Redirection has failed with no stdout so exit */
                        platform_teardown();
                        exit( 1 );
                }
#endif /* __unix__ || __APPLE__ __MACH__ */

            }

            if( unmet_dep_count > 0 || ret == DISPATCH_UNSUPPORTED_SUITE )
            {
                total_skipped++;
                mbedtls_fprintf( stdout, "----" );

                if( 1 == option_verbose && ret == DISPATCH_UNSUPPORTED_SUITE )
                {
                    mbedtls_fprintf( stdout, "\n   Test Suite not enabled" );
                }

                if( 1 == option_verbose && unmet_dep_count > 0 )
                {
                    mbedtls_fprintf( stdout, "\n   Unmet dependencies: " );
                    for( i = 0; i < unmet_dep_count; i++ )
                    {
                        mbedtls_fprintf(stdout, "%s  ",
                                        unmet_dependencies[i]);
                        free(unmet_dependencies[i]);
                    }
                }
                mbedtls_fprintf( stdout, "\n" );
                fflush( stdout );

                unmet_dep_count = 0;
            }
            else if( ret == DISPATCH_TEST_SUCCESS )
            {
                if( test_info.failed == 0 )
                {
                    mbedtls_fprintf( stdout, "PASS\n" );
                }
                else
                {
                    total_errors++;
                    mbedtls_fprintf( stdout, "FAILED\n" );
                    mbedtls_fprintf( stdout, "  %s\n  at line %d, %s\n",
                                     test_info.test, test_info.line_no,
                                     test_info.filename );
                }
                fflush( stdout );
            }
            else if( ret == DISPATCH_INVALID_TEST_DATA )
            {
                mbedtls_fprintf( stderr, "FAILED: FATAL PARSE ERROR\n" );
                fclose( file );
                platform_teardown();
                mbedtls_exit( 2 );
            }
            else
                total_errors++;

            if( ( ret = get_line( file, buf, sizeof( buf ) ) ) != 0 )
                break;
            if( strlen( buf ) != 0 )
            {
                mbedtls_fprintf( stderr, "Should be empty %d\n",
                                 (int) strlen( buf ) );
                platform_teardown();
                return( 1 );
            }
        }
        fclose( file );

        /* In case we encounter early end of file */
        for( i = 0; i < unmet_dep_count; i++ )
            free( unmet_dependencies[i] );
    }

    mbedtls_fprintf( stdout, "\n----------------------------------------------------------------------------\n\n");
    if( total_errors == 0 )
        mbedtls_fprintf( stdout, "PASSED" );
    else
        mbedtls_fprintf( stdout, "FAILED" );

    mbedtls_fprintf( stdout, " (%d / %d tests (%d skipped))\n",
             total_tests - total_errors, total_tests, total_skipped );

#if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C) && \
    !defined(TEST_SUITE_MEMORY_BUFFER_ALLOC)
#if defined(MBEDTLS_MEMORY_DEBUG)
    mbedtls_memory_buffer_alloc_status();
#endif
    mbedtls_memory_buffer_alloc_free();
#endif

#if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__))
    if( stdout_fd != -1 )
        close_output( stdout );
#endif /* __unix__ || __APPLE__ __MACH__ */

    platform_teardown();
    return( total_errors != 0 );
}
