mbed TLS Build
Dependents: Encrypt_Decrypt1 mbed_blink_tls encrypt encrypt
Diff: tests/suites/helpers.function
- Revision:
- 0:cdf462088d13
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/tests/suites/helpers.function Thu Jan 05 00:18:44 2017 +0000 @@ -0,0 +1,404 @@ +#line 1 "helpers.function" +/*----------------------------------------------------------------------------*/ +/* Headers */ + +#include <stdlib.h> + +#if defined(MBEDTLS_PLATFORM_C) +#include "mbedtls/platform.h" +#else +#include <stdio.h> +#define mbedtls_fprintf fprintf +#define mbedtls_snprintf snprintf +#define mbedtls_calloc calloc +#define mbedtls_free free +#define mbedtls_exit exit +#define mbedtls_time time +#define mbedtls_time_t time_t +#define MBEDTLS_EXIT_SUCCESS EXIT_SUCCESS +#define MBEDTLS_EXIT_FAILURE EXIT_FAILURE +#endif + +#if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C) +#include "mbedtls/memory_buffer_alloc.h" +#endif + +#ifdef _MSC_VER +#include <basetsd.h> +typedef UINT32 uint32_t; +#define strncasecmp _strnicmp +#define strcasecmp _stricmp +#else +#include <stdint.h> +#endif + +#include <string.h> + +#if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__)) +#include <unistd.h> +#endif + +/*----------------------------------------------------------------------------*/ +/* Constants */ + +#define DEPENDENCY_SUPPORTED 0 +#define DEPENDENCY_NOT_SUPPORTED 1 + +#define KEY_VALUE_MAPPING_FOUND 0 +#define KEY_VALUE_MAPPING_NOT_FOUND -1 + +#define DISPATCH_TEST_SUCCESS 0 +#define DISPATCH_TEST_FN_NOT_FOUND 1 +#define DISPATCH_INVALID_TEST_DATA 2 +#define DISPATCH_UNSUPPORTED_SUITE 3 + + +/*----------------------------------------------------------------------------*/ +/* Macros */ + +#define TEST_ASSERT( TEST ) \ + do { \ + if( ! (TEST) ) \ + { \ + test_fail( #TEST, __LINE__, __FILE__ ); \ + goto exit; \ + } \ + } while( 0 ) + +#define assert(a) if( !( a ) ) \ +{ \ + mbedtls_fprintf( stderr, "Assertion Failed at %s:%d - %s\n", \ + __FILE__, __LINE__, #a ); \ + mbedtls_exit( 1 ); \ +} + +/* + * 32-bit integer manipulation macros (big endian) + */ +#ifndef GET_UINT32_BE +#define GET_UINT32_BE(n,b,i) \ +{ \ + (n) = ( (uint32_t) (b)[(i) ] << 24 ) \ + | ( (uint32_t) (b)[(i) + 1] << 16 ) \ + | ( (uint32_t) (b)[(i) + 2] << 8 ) \ + | ( (uint32_t) (b)[(i) + 3] ); \ +} +#endif + +#ifndef PUT_UINT32_BE +#define PUT_UINT32_BE(n,b,i) \ +{ \ + (b)[(i) ] = (unsigned char) ( (n) >> 24 ); \ + (b)[(i) + 1] = (unsigned char) ( (n) >> 16 ); \ + (b)[(i) + 2] = (unsigned char) ( (n) >> 8 ); \ + (b)[(i) + 3] = (unsigned char) ( (n) ); \ +} +#endif + + +/*----------------------------------------------------------------------------*/ +/* Global variables */ + +static int test_errors = 0; + + +/*----------------------------------------------------------------------------*/ +/* Helper Functions */ + +#if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__)) +static int redirect_output( FILE** out_stream, const char* path ) +{ + int stdout_fd = dup( fileno( *out_stream ) ); + + if( stdout_fd == -1 ) + { + return -1; + } + + fflush( *out_stream ); + fclose( *out_stream ); + *out_stream = fopen( path, "w" ); + + if( *out_stream == NULL ) + { + return -1; + } + + return stdout_fd; +} + +static int restore_output( FILE** out_stream, int old_fd ) +{ + fflush( *out_stream ); + fclose( *out_stream ); + + *out_stream = fdopen( old_fd, "w" ); + if( *out_stream == NULL ) + { + return -1; + } + + return 0; +} + +static void close_output( FILE* out_stream ) +{ + fclose( out_stream ); +} +#endif /* __unix__ || __APPLE__ __MACH__ */ + +static int unhexify( unsigned char *obuf, const char *ibuf ) +{ + unsigned char c, c2; + int len = strlen( ibuf ) / 2; + assert( strlen( ibuf ) % 2 == 0 ); /* must be even number of bytes */ + + while( *ibuf != 0 ) + { + c = *ibuf++; + if( c >= '0' && c <= '9' ) + c -= '0'; + else if( c >= 'a' && c <= 'f' ) + c -= 'a' - 10; + else if( c >= 'A' && c <= 'F' ) + c -= 'A' - 10; + else + assert( 0 ); + + c2 = *ibuf++; + if( c2 >= '0' && c2 <= '9' ) + c2 -= '0'; + else if( c2 >= 'a' && c2 <= 'f' ) + c2 -= 'a' - 10; + else if( c2 >= 'A' && c2 <= 'F' ) + c2 -= 'A' - 10; + else + assert( 0 ); + + *obuf++ = ( c << 4 ) | c2; + } + + return len; +} + +static void hexify( unsigned char *obuf, const unsigned char *ibuf, int len ) +{ + unsigned char l, h; + + while( len != 0 ) + { + h = *ibuf / 16; + l = *ibuf % 16; + + if( h < 10 ) + *obuf++ = '0' + h; + else + *obuf++ = 'a' + h - 10; + + if( l < 10 ) + *obuf++ = '0' + l; + else + *obuf++ = 'a' + l - 10; + + ++ibuf; + len--; + } +} + +/** + * Allocate and zeroize a buffer. + * + * If the size if zero, a pointer to a zeroized 1-byte buffer is returned. + * + * For convenience, dies if allocation fails. + */ +static unsigned char *zero_alloc( size_t len ) +{ + void *p; + size_t actual_len = ( len != 0 ) ? len : 1; + + p = mbedtls_calloc( 1, actual_len ); + assert( p != NULL ); + + memset( p, 0x00, actual_len ); + + return( p ); +} + +/** + * Allocate and fill a buffer from hex data. + * + * The buffer is sized exactly as needed. This allows to detect buffer + * overruns (including overreads) when running the test suite under valgrind. + * + * If the size if zero, a pointer to a zeroized 1-byte buffer is returned. + * + * For convenience, dies if allocation fails. + */ +static unsigned char *unhexify_alloc( const char *ibuf, size_t *olen ) +{ + unsigned char *obuf; + + *olen = strlen( ibuf ) / 2; + + if( *olen == 0 ) + return( zero_alloc( *olen ) ); + + obuf = mbedtls_calloc( 1, *olen ); + assert( obuf != NULL ); + + (void) unhexify( obuf, ibuf ); + + return( obuf ); +} + +/** + * This function just returns data from rand(). + * Although predictable and often similar on multiple + * runs, this does not result in identical random on + * each run. So do not use this if the results of a + * test depend on the random data that is generated. + * + * rng_state shall be NULL. + */ +static int rnd_std_rand( void *rng_state, unsigned char *output, size_t len ) +{ +#if !defined(__OpenBSD__) + size_t i; + + if( rng_state != NULL ) + rng_state = NULL; + + for( i = 0; i < len; ++i ) + output[i] = rand(); +#else + if( rng_state != NULL ) + rng_state = NULL; + + arc4random_buf( output, len ); +#endif /* !OpenBSD */ + + return( 0 ); +} + +/** + * This function only returns zeros + * + * rng_state shall be NULL. + */ +static int rnd_zero_rand( void *rng_state, unsigned char *output, size_t len ) +{ + if( rng_state != NULL ) + rng_state = NULL; + + memset( output, 0, len ); + + return( 0 ); +} + +typedef struct +{ + unsigned char *buf; + size_t length; +} rnd_buf_info; + +/** + * This function returns random based on a buffer it receives. + * + * rng_state shall be a pointer to a rnd_buf_info structure. + * + * The number of bytes released from the buffer on each call to + * the random function is specified by per_call. (Can be between + * 1 and 4) + * + * After the buffer is empty it will return rand(); + */ +static int rnd_buffer_rand( void *rng_state, unsigned char *output, size_t len ) +{ + rnd_buf_info *info = (rnd_buf_info *) rng_state; + size_t use_len; + + if( rng_state == NULL ) + return( rnd_std_rand( NULL, output, len ) ); + + use_len = len; + if( len > info->length ) + use_len = info->length; + + if( use_len ) + { + memcpy( output, info->buf, use_len ); + info->buf += use_len; + info->length -= use_len; + } + + if( len - use_len > 0 ) + return( rnd_std_rand( NULL, output + use_len, len - use_len ) ); + + return( 0 ); +} + +/** + * Info structure for the pseudo random function + * + * Key should be set at the start to a test-unique value. + * Do not forget endianness! + * State( v0, v1 ) should be set to zero. + */ +typedef struct +{ + uint32_t key[16]; + uint32_t v0, v1; +} rnd_pseudo_info; + +/** + * This function returns random based on a pseudo random function. + * This means the results should be identical on all systems. + * Pseudo random is based on the XTEA encryption algorithm to + * generate pseudorandom. + * + * rng_state shall be a pointer to a rnd_pseudo_info structure. + */ +static int rnd_pseudo_rand( void *rng_state, unsigned char *output, size_t len ) +{ + rnd_pseudo_info *info = (rnd_pseudo_info *) rng_state; + uint32_t i, *k, sum, delta=0x9E3779B9; + unsigned char result[4], *out = output; + + if( rng_state == NULL ) + return( rnd_std_rand( NULL, output, len ) ); + + k = info->key; + + while( len > 0 ) + { + size_t use_len = ( len > 4 ) ? 4 : len; + sum = 0; + + for( i = 0; i < 32; i++ ) + { + info->v0 += ( ( ( info->v1 << 4 ) ^ ( info->v1 >> 5 ) ) + + info->v1 ) ^ ( sum + k[sum & 3] ); + sum += delta; + info->v1 += ( ( ( info->v0 << 4 ) ^ ( info->v0 >> 5 ) ) + + info->v0 ) ^ ( sum + k[( sum>>11 ) & 3] ); + } + + PUT_UINT32_BE( info->v0, result, 0 ); + memcpy( out, result, use_len ); + len -= use_len; + out += 4; + } + + return( 0 ); +} + +static void test_fail( const char *test, int line_no, const char* filename ) +{ + test_errors++; + if( test_errors == 1 ) + mbedtls_fprintf( stdout, "FAILED\n" ); + mbedtls_fprintf( stdout, " %s\n at line %d, %s\n", test, line_no, + filename ); +} +