#line 2 "suites/host_test.function"

/**
 * \brief       Verifies that string is in string parameter format i.e. "<str>"
 *              It also strips enclosing '"' from the input string.
 *
 * \param str   String parameter.
 *
 * \return      0 if success else 1
 */
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 );
}

/**
 * \brief       Verifies that string is an integer. Also gives the converted
 *              integer value.
 *
 * \param str   Input string.
 * \param value Pointer to int for output value.
 *
 * \return      0 if success else 1
 */
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' || 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 );
    }

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


/**
 * \brief       Usage string.
 *
 */
#define USAGE \
    "Usage: %s [OPTIONS] files...\n\n" \
    "   Command line arguments:\n" \
    "     files...          One or more test data files. If no file is\n" \
    "                       specified the following default test case\n" \
    "                       file 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"


/**
 * \brief       Read a line from the passed file pointer.
 *
 * \param f     FILE pointer
 * \param buf   Pointer to memory to hold read line.
 * \param len   Length of the buf.
 *
 * \return      0 if success else -1
 */
int get_line( FILE *f, char *buf, size_t len )
{
    char *ret;
    int i = 0, str_len = 0, has_string = 0;

    /* Read until we get a valid line */
    do
    {
        ret = fgets( buf, len, f );
        if( ret == NULL )
            return( -1 );

        str_len = strlen( buf );

        /* Skip empty line and comment */
        if ( str_len == 0 || buf[0] == '#' )
            continue;
        has_string = 0;
        for ( i = 0; i < str_len; i++ )
        {
            char c = buf[i];
            if ( c != ' ' && c != '\t' && c != '\n' &&
                 c != '\v' && c != '\f' && c != '\r' )
            {
                has_string = 1;
                break;
            }
        }
    } while( !has_string );

    /* Strip new line and carriage return */
    ret = buf + strlen( buf );
    if( ret-- > buf && *ret == '\n' )
        *ret = '\0';
    if( ret-- > buf && *ret == '\r' )
        *ret = '\0';

    return( 0 );
}

/**
 * \brief       Splits string delimited by ':'. Ignores '\:'.
 *
 * \param buf           Input string
 * \param len           Input string length
 * \param params        Out params found
 * \param params_len    Out params array len
 *
 * \return      Count of strings found.
 */
static int parse_arguments( char *buf, size_t len, char **params,
                            size_t params_len )
{
    size_t 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;
                TEST_HELPER_ASSERT( cnt < params_len );
                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 );
}

/**
 * \brief       Converts parameters into test function consumable parameters.
 *              Example: Input:  {"int", "0", "char*", "Hello",
 *                                "hex", "abef", "exp", "1"}
 *                      Output:  {
 *                                0,                // Verified int
 *                                "Hello",          // Verified string
 *                                2, { 0xab, 0xef },// Converted len,hex pair
 *                                9600              // Evaluated expression
 *                               }
 *
 *
 * \param cnt               Parameter array count.
 * \param params            Out array of found parameters.
 * \param int_params_store  Memory for storing processed integer parameters.
 *
 * \return      0 for success else 1
 */
static int convert_params( size_t cnt , char ** params , int * int_params_store )
{
    char ** cur = params;
    char ** out = params;
    int ret = DISPATCH_TEST_SUCCESS;

    while ( cur < params + cnt )
    {
        char * type = *cur++;
        char * val = *cur++;

        if ( strcmp( type, "char*" ) == 0 )
        {
            if ( verify_string( &val ) == 0 )
            {
              *out++ = val;
            }
            else
            {
                ret = ( DISPATCH_INVALID_TEST_DATA );
                break;
            }
        }
        else if ( strcmp( type, "int" ) == 0 )
        {
            if ( verify_int( val, int_params_store ) == 0 )
            {
              *out++ = (char *) int_params_store++;
            }
            else
            {
                ret = ( DISPATCH_INVALID_TEST_DATA );
                break;
            }
        }
        else if ( strcmp( type, "hex" ) == 0 )
        {
            if ( verify_string( &val ) == 0 )
            {
                size_t len;

                TEST_HELPER_ASSERT(
                  mbedtls_test_unhexify( (unsigned char *) val, strlen( val ),
                                         val, &len ) == 0 );

                *int_params_store = len;
                *out++ = val;
                *out++ = (char *)(int_params_store++);
            }
            else
            {
                ret = ( DISPATCH_INVALID_TEST_DATA );
                break;
            }
        }
        else if ( strcmp( type, "exp" ) == 0 )
        {
            int exp_id = strtol( val, NULL, 10 );
            if ( get_expression ( exp_id, int_params_store ) == 0 )
            {
              *out++ = (char *)int_params_store++;
            }
            else
            {
              ret = ( DISPATCH_INVALID_TEST_DATA );
              break;
            }
        }
        else
        {
          ret = ( DISPATCH_INVALID_TEST_DATA );
          break;
        }
    }
    return( ret );
}

/**
 * \brief       Tests snprintf implementation with test input.
 *
 * \note
 * 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.
 *
 * \param n         Buffer test length.
 * \param ref_buf   Expected buffer.
 * \param ref_ret   Expected snprintf return value.
 *
 * \return      0 for success else 1
 */
#if defined(__GNUC__)
__attribute__((__noinline__))
#endif
static int test_snprintf( size_t n, const char *ref_buf, 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 );
}

/**
 * \brief       Tests snprintf implementation.
 *
 * \param none
 *
 * \return      0 for success else 1
 */
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 );
}

/** \brief Write the description of the test case to the outcome CSV file.
 *
 * \param outcome_file  The file to write to.
 *                      If this is \c NULL, this function does nothing.
 * \param argv0         The test suite name.
 * \param test_case     The test case description.
 */
static void write_outcome_entry( FILE *outcome_file,
                                 const char *argv0,
                                 const char *test_case )
{
    /* The non-varying fields are initialized on first use. */
    static const char *platform = NULL;
    static const char *configuration = NULL;
    static const char *test_suite = NULL;

    if( outcome_file == NULL )
        return;

    if( platform == NULL )
    {
        platform = getenv( "MBEDTLS_TEST_PLATFORM" );
        if( platform == NULL )
            platform = "unknown";
    }
    if( configuration == NULL )
    {
        configuration = getenv( "MBEDTLS_TEST_CONFIGURATION" );
        if( configuration == NULL )
            configuration = "unknown";
    }
    if( test_suite == NULL )
    {
        test_suite = strrchr( argv0, '/' );
        if( test_suite != NULL )
            test_suite += 1; // skip the '/'
        else
            test_suite = argv0;
    }

    /* Write the beginning of the outcome line.
     * Ignore errors: writing the outcome file is on a best-effort basis. */
    mbedtls_fprintf( outcome_file, "%s;%s;%s;%s;",
                     platform, configuration, test_suite, test_case );
}

/** \brief Write the result of the test case to the outcome CSV file.
 *
 * \param outcome_file  The file to write to.
 *                      If this is \c NULL, this function does nothing.
 * \param unmet_dep_count            The number of unmet dependencies.
 * \param unmet_dependencies         The array of unmet dependencies.
 * \param missing_unmet_dependencies Non-zero if there was a problem tracking
 *                                   all unmet dependencies, 0 otherwise.
 * \param ret           The test dispatch status (DISPATCH_xxx).
 * \param test_info     A pointer to the test info structure.
 */
static void write_outcome_result( FILE *outcome_file,
                                  size_t unmet_dep_count,
                                  int unmet_dependencies[],
                                  int missing_unmet_dependencies,
                                  int ret,
                                  const test_info_t *info )
{
    if( outcome_file == NULL )
        return;

    /* Write the end of the outcome line.
     * Ignore errors: writing the outcome file is on a best-effort basis. */
    switch( ret )
    {
        case DISPATCH_TEST_SUCCESS:
            if( unmet_dep_count > 0 )
            {
                size_t i;
                mbedtls_fprintf( outcome_file, "SKIP" );
                for( i = 0; i < unmet_dep_count; i++ )
                {
                    mbedtls_fprintf( outcome_file, "%c%d",
                                     i == 0 ? ';' : ':',
                                     unmet_dependencies[i] );
                }
                if( missing_unmet_dependencies )
                    mbedtls_fprintf( outcome_file, ":..." );
                break;
            }
            switch( info->result )
            {
                case TEST_RESULT_SUCCESS:
                    mbedtls_fprintf( outcome_file, "PASS;" );
                    break;
                case TEST_RESULT_SKIPPED:
                    mbedtls_fprintf( outcome_file, "SKIP;Runtime skip" );
                    break;
                default:
                    mbedtls_fprintf( outcome_file, "FAIL;%s:%d:%s",
                                     info->filename, info->line_no,
                                     info->test );
                    break;
            }
            break;
        case DISPATCH_TEST_FN_NOT_FOUND:
            mbedtls_fprintf( outcome_file, "FAIL;Test function not found" );
            break;
        case DISPATCH_INVALID_TEST_DATA:
            mbedtls_fprintf( outcome_file, "FAIL;Invalid test data" );
            break;
        case DISPATCH_UNSUPPORTED_SUITE:
            mbedtls_fprintf( outcome_file, "SKIP;Unsupported suite" );
            break;
        default:
            mbedtls_fprintf( outcome_file, "FAIL;Unknown cause" );
            break;
    }
    mbedtls_fprintf( outcome_file, "\n" );
    fflush( outcome_file );
}

/**
 * \brief       Desktop implementation of execute_tests().
 *              Parses command line and executes tests from
 *              supplied or default data file.
 *
 * \param argc  Command line argument count.
 * \param argv  Argument array.
 *
 * \return      Program exit status.
 */
int execute_tests( int argc , const char ** argv )
{
    /* Local Configurations and options */
    const char *default_filename = "DATA_FILE";
    const char *test_filename = NULL;
    const char **test_files = NULL;
    size_t testfile_count = 0;
    int option_verbose = 0;
    size_t function_id = 0;

    /* Other Local variables */
    int arg_index = 1;
    const char *next_arg;
    size_t testfile_index, i, cnt;
    int ret;
    unsigned total_errors = 0, total_tests = 0, total_skipped = 0;
    FILE *file;
    char buf[5000];
    char *params[50];
    /* Store for proccessed integer params. */
    int int_params[50];
    void *pointer;
#if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__))
    int stdout_fd = -1;
#endif /* __unix__ || __APPLE__ __MACH__ */
    const char *outcome_file_name = getenv( "MBEDTLS_TEST_OUTCOME_FILE" );
    FILE *outcome_file = NULL;

#if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C) && \
    !defined(TEST_SUITE_MEMORY_BUFFER_ALLOC)
    unsigned char alloc_buf[1000000];
    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" );
        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" );
        return( 1 );
    }

    if( outcome_file_name != NULL && *outcome_file_name != '\0' )
    {
        outcome_file = fopen( outcome_file_name, "a" );
        if( outcome_file == NULL )
        {
            mbedtls_fprintf( stderr, "Unable to open outcome file. Continuing anyway.\n" );
        }
    }

    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 );
            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++ )
    {
        size_t unmet_dep_count = 0;
        int unmet_dependencies[20];
        int missing_unmet_dependencies = 0;

        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 );
            if( outcome_file != NULL )
                fclose( outcome_file );
            return( 1 );
        }

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

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

            total_tests++;

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

            if( strcmp( params[0], "depends_on" ) == 0 )
            {
                for( i = 1; i < cnt; i++ )
                {
                    int dep_id = strtol( params[i], NULL, 10 );
                    if( dep_check( dep_id ) != DEPENDENCY_SUPPORTED )
                    {
                        if( unmet_dep_count <
                            ARRAY_LENGTH( unmet_dependencies ) )
                        {
                            unmet_dependencies[unmet_dep_count] = dep_id;
                            unmet_dep_count++;
                        }
                        else
                        {
                            missing_unmet_dependencies = 1;
                        }
                    }
                }

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

            // If there are no unmet dependencies execute the test
            if( unmet_dep_count == 0 )
            {
                test_info.result = TEST_RESULT_SUCCESS;
                test_info.step = (unsigned long)( -1 );

#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 )
                    {
                        /* Redirection has failed with no stdout so exit */
                        exit( 1 );
                    }
                }
#endif /* __unix__ || __APPLE__ __MACH__ */

                function_id = strtoul( params[0], NULL, 10 );
                if ( (ret = check_test( function_id )) == DISPATCH_TEST_SUCCESS )
                {
                    ret = convert_params( cnt - 1, params + 1, int_params );
                    if ( DISPATCH_TEST_SUCCESS == ret )
                    {
                        ret = dispatch_test( function_id, (void **)( params + 1 ) );
                    }
                }

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

            }

            write_outcome_result( outcome_file,
                                  unmet_dep_count, unmet_dependencies,
                                  missing_unmet_dependencies,
                                  ret, &test_info );
            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, "%d ",
                                        unmet_dependencies[i] );
                    }
                    if( missing_unmet_dependencies )
                        mbedtls_fprintf( stdout, "..." );
                }
                mbedtls_fprintf( stdout, "\n" );
                fflush( stdout );

                unmet_dep_count = 0;
                missing_unmet_dependencies = 0;
            }
            else if( ret == DISPATCH_TEST_SUCCESS )
            {
                if( test_info.result == TEST_RESULT_SUCCESS )
                {
                    mbedtls_fprintf( stdout, "PASS\n" );
                }
                else if( test_info.result == TEST_RESULT_SKIPPED )
                {
                    mbedtls_fprintf( stdout, "----\n" );
                    total_skipped++;
                }
                else
                {
                    total_errors++;
                    mbedtls_fprintf( stdout, "FAILED\n" );
                    mbedtls_fprintf( stdout, "  %s\n  at ",
                                     test_info.test );
                    if( test_info.step != (unsigned long)( -1 ) )
                    {
                        mbedtls_fprintf( stdout, "step %lu, ",
                                         test_info.step );
                    }
                    mbedtls_fprintf( stdout, "line %d, %s",
                                     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 );
                mbedtls_exit( 2 );
            }
            else if( ret == DISPATCH_TEST_FN_NOT_FOUND )
            {
                mbedtls_fprintf( stderr, "FAILED: FATAL TEST FUNCTION NOT FOUND\n" );
                fclose( file );
                mbedtls_exit( 2 );
            }
            else
                total_errors++;
        }
        fclose( file );
    }

    if( outcome_file != NULL )
        fclose( outcome_file );

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

    mbedtls_fprintf( stdout, " (%u / %u tests (%u 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

    return( total_errors != 0 );
}
