mirror of
https://github.com/yuzu-emu/mbedtls.git
synced 2024-11-26 22:25:44 +01:00
522 lines
14 KiB
Plaintext
522 lines
14 KiB
Plaintext
#line 1 "helpers.function"
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/*----------------------------------------------------------------------------*/
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/* Headers */
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#include <stdlib.h>
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#if defined(MBEDTLS_PLATFORM_C)
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#include "mbedtls/platform.h"
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#else
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#include <stdio.h>
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#define mbedtls_fprintf fprintf
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#define mbedtls_snprintf snprintf
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#define mbedtls_calloc calloc
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#define mbedtls_free free
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#define mbedtls_exit exit
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#define mbedtls_time time
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#define mbedtls_time_t time_t
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#define MBEDTLS_EXIT_SUCCESS EXIT_SUCCESS
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#define MBEDTLS_EXIT_FAILURE EXIT_FAILURE
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#endif
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#if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
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#include "mbedtls/memory_buffer_alloc.h"
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#endif
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#ifdef _MSC_VER
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#include <basetsd.h>
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typedef UINT32 uint32_t;
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#define strncasecmp _strnicmp
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#define strcasecmp _stricmp
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#else
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#include <stdint.h>
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#endif
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#include <string.h>
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#if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__))
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#include <unistd.h>
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#endif
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/*
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* Define the two macros
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*
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* #define TEST_CF_SECRET(ptr, size)
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* #define TEST_CF_PUBLIC(ptr, size)
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*
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* that can be used in tests to mark a memory area as secret (no branch or
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* memory access should depend on it) or public (default, only needs to be
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* marked explicitly when it was derived from secret data).
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*
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* Arguments:
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* - ptr: a pointer to the memory area to be marked
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* - size: the size in bytes of the memory area
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*
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* Implementation:
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* The basic idea is that of ctgrind <https://github.com/agl/ctgrind>: we can
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* re-use tools that were designed for checking use of uninitialized memory.
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* This file contains two implementations: one based on MemorySanitizer, the
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* other on valgrind's memcheck. If none of them is enabled, dummy macros that
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* do nothing are defined for convenience.
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*/
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#if defined(MBEDTLS_TEST_CONSTANT_FLOW_MEMSAN)
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#include <sanitizer/msan_interface.h>
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/* Use macros to avoid messing up with origin tracking */
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#define TEST_CF_SECRET __msan_allocated_memory
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// void __msan_allocated_memory(const volatile void* data, size_t size);
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#define TEST_CF_PUBLIC __msan_unpoison
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// void __msan_unpoison(const volatile void *a, size_t size);
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#elif defined(MBEDTLS_TEST_CONSTANT_FLOW_VALGRIND)
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#include <valgrind/memcheck.h>
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#define TEST_CF_SECRET VALGRIND_MAKE_MEM_UNDEFINED
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// VALGRIND_MAKE_MEM_UNDEFINED(_qzz_addr, _qzz_len)
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#define TEST_CF_PUBLIC VALGRIND_MAKE_MEM_DEFINED
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// VALGRIND_MAKE_MEM_DEFINED(_qzz_addr, _qzz_len)
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#else /* MBEDTLS_TEST_CONSTANT_FLOW_MEMSAN ||
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MBEDTLS_TEST_CONSTANT_FLOW_VALGRIND */
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#define TEST_CF_SECRET(ptr, size)
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#define TEST_CF_PUBLIC(ptr, size)
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#endif /* MBEDTLS_TEST_CONSTANT_FLOW_MEMSAN */
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/*----------------------------------------------------------------------------*/
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/* Constants */
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#define DEPENDENCY_SUPPORTED 0
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#define DEPENDENCY_NOT_SUPPORTED 1
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#define KEY_VALUE_MAPPING_FOUND 0
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#define KEY_VALUE_MAPPING_NOT_FOUND -1
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#define DISPATCH_TEST_SUCCESS 0
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#define DISPATCH_TEST_FN_NOT_FOUND 1
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#define DISPATCH_INVALID_TEST_DATA 2
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#define DISPATCH_UNSUPPORTED_SUITE 3
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/*----------------------------------------------------------------------------*/
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/* Macros */
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#define TEST_ASSERT( TEST ) \
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do { \
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if( ! (TEST) ) \
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{ \
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test_fail( #TEST, __LINE__, __FILE__ ); \
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goto exit; \
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} \
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} while( 0 )
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#define assert(a) if( !( a ) ) \
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{ \
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mbedtls_fprintf( stderr, "Assertion Failed at %s:%d - %s\n", \
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__FILE__, __LINE__, #a ); \
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mbedtls_exit( 1 ); \
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}
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#if defined(__GNUC__)
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/* Test if arg and &(arg)[0] have the same type. This is true if arg is
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* an array but not if it's a pointer. */
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#define IS_ARRAY_NOT_POINTER( arg ) \
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( ! __builtin_types_compatible_p( __typeof__( arg ), \
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__typeof__( &( arg )[0] ) ) )
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#else
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/* On platforms where we don't know how to implement this check,
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* omit it. Oh well, a non-portable check is better than nothing. */
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#define IS_ARRAY_NOT_POINTER( arg ) 1
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#endif
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/* A compile-time constant with the value 0. If `const_expr` is not a
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* compile-time constant with a nonzero value, cause a compile-time error. */
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#define STATIC_ASSERT_EXPR( const_expr ) \
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( 0 && sizeof( struct { unsigned int STATIC_ASSERT : 1 - 2 * ! ( const_expr ); } ) )
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/* Return the scalar value `value` (possibly promoted). This is a compile-time
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* constant if `value` is. `condition` must be a compile-time constant.
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* If `condition` is false, arrange to cause a compile-time error. */
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#define STATIC_ASSERT_THEN_RETURN( condition, value ) \
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( STATIC_ASSERT_EXPR( condition ) ? 0 : ( value ) )
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#define ARRAY_LENGTH_UNSAFE( array ) \
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( sizeof( array ) / sizeof( *( array ) ) )
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/** Return the number of elements of a static or stack array.
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*
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* \param array A value of array (not pointer) type.
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*
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* \return The number of elements of the array.
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*/
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#define ARRAY_LENGTH( array ) \
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( STATIC_ASSERT_THEN_RETURN( IS_ARRAY_NOT_POINTER( array ), \
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ARRAY_LENGTH_UNSAFE( array ) ) )
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/*
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* 32-bit integer manipulation macros (big endian)
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*/
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#ifndef GET_UINT32_BE
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#define GET_UINT32_BE(n,b,i) \
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{ \
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(n) = ( (uint32_t) (b)[(i) ] << 24 ) \
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| ( (uint32_t) (b)[(i) + 1] << 16 ) \
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| ( (uint32_t) (b)[(i) + 2] << 8 ) \
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| ( (uint32_t) (b)[(i) + 3] ); \
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}
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#endif
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#ifndef PUT_UINT32_BE
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#define PUT_UINT32_BE(n,b,i) \
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{ \
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(b)[(i) ] = (unsigned char) ( (n) >> 24 ); \
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(b)[(i) + 1] = (unsigned char) ( (n) >> 16 ); \
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(b)[(i) + 2] = (unsigned char) ( (n) >> 8 ); \
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(b)[(i) + 3] = (unsigned char) ( (n) ); \
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}
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#endif
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/*----------------------------------------------------------------------------*/
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/* Global variables */
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static struct
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{
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int failed;
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const char *test;
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const char *filename;
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int line_no;
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}
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test_info;
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/*----------------------------------------------------------------------------*/
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/* Helper flags for complex dependencies */
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/* Indicates whether we expect mbedtls_entropy_init
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* to initialize some strong entropy source. */
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#if defined(MBEDTLS_TEST_NULL_ENTROPY) || \
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( !defined(MBEDTLS_NO_DEFAULT_ENTROPY_SOURCES) && \
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( !defined(MBEDTLS_NO_PLATFORM_ENTROPY) || \
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defined(MBEDTLS_HAVEGE_C) || \
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defined(MBEDTLS_ENTROPY_HARDWARE_ALT) || \
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defined(ENTROPY_NV_SEED) ) )
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#define ENTROPY_HAVE_STRONG
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#endif
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/*----------------------------------------------------------------------------*/
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/* Helper Functions */
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void test_fail( const char *test, int line_no, const char* filename )
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{
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if( test_info.failed )
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{
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/* We've already recorded the test as having failed. Don't
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* overwrite any previous information about the failure. */
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return;
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}
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test_info.failed = 1;
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test_info.test = test;
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test_info.line_no = line_no;
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test_info.filename = filename;
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}
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#if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__))
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static int redirect_output( FILE* out_stream, const char* path )
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{
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int out_fd, dup_fd;
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FILE* path_stream;
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out_fd = fileno( out_stream );
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dup_fd = dup( out_fd );
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if( dup_fd == -1 )
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{
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return( -1 );
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}
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path_stream = fopen( path, "w" );
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if( path_stream == NULL )
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{
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close( dup_fd );
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return( -1 );
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}
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fflush( out_stream );
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if( dup2( fileno( path_stream ), out_fd ) == -1 )
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{
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close( dup_fd );
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fclose( path_stream );
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return( -1 );
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}
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fclose( path_stream );
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return( dup_fd );
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}
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static int restore_output( FILE* out_stream, int dup_fd )
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{
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int out_fd = fileno( out_stream );
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fflush( out_stream );
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if( dup2( dup_fd, out_fd ) == -1 )
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{
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close( out_fd );
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close( dup_fd );
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return( -1 );
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}
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close( dup_fd );
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return( 0 );
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}
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#endif /* __unix__ || __APPLE__ __MACH__ */
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int unhexify( unsigned char *obuf, const char *ibuf )
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{
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unsigned char c, c2;
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int len = strlen( ibuf ) / 2;
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assert( strlen( ibuf ) % 2 == 0 ); /* must be even number of bytes */
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while( *ibuf != 0 )
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{
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c = *ibuf++;
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if( c >= '0' && c <= '9' )
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c -= '0';
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else if( c >= 'a' && c <= 'f' )
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c -= 'a' - 10;
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else if( c >= 'A' && c <= 'F' )
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c -= 'A' - 10;
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else
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assert( 0 );
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c2 = *ibuf++;
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if( c2 >= '0' && c2 <= '9' )
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c2 -= '0';
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else if( c2 >= 'a' && c2 <= 'f' )
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c2 -= 'a' - 10;
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else if( c2 >= 'A' && c2 <= 'F' )
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c2 -= 'A' - 10;
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else
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assert( 0 );
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*obuf++ = ( c << 4 ) | c2;
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}
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return len;
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}
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void hexify( unsigned char *obuf, const unsigned char *ibuf, int len )
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{
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unsigned char l, h;
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while( len != 0 )
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{
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h = *ibuf / 16;
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l = *ibuf % 16;
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if( h < 10 )
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*obuf++ = '0' + h;
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else
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*obuf++ = 'a' + h - 10;
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if( l < 10 )
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*obuf++ = '0' + l;
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else
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*obuf++ = 'a' + l - 10;
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++ibuf;
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len--;
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}
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}
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/**
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* Allocate and zeroize a buffer.
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*
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* If the size if zero, a pointer to a zeroized 1-byte buffer is returned.
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*
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* For convenience, dies if allocation fails.
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*/
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static unsigned char *zero_alloc( size_t len )
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{
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void *p;
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size_t actual_len = ( len != 0 ) ? len : 1;
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p = mbedtls_calloc( 1, actual_len );
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assert( p != NULL );
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memset( p, 0x00, actual_len );
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return( p );
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}
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/**
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* Allocate and fill a buffer from hex data.
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*
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* The buffer is sized exactly as needed. This allows to detect buffer
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* overruns (including overreads) when running the test suite under valgrind.
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*
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* If the size if zero, a pointer to a zeroized 1-byte buffer is returned.
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*
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* For convenience, dies if allocation fails.
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*/
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unsigned char *unhexify_alloc( const char *ibuf, size_t *olen )
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{
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unsigned char *obuf;
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*olen = strlen( ibuf ) / 2;
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if( *olen == 0 )
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return( zero_alloc( *olen ) );
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obuf = mbedtls_calloc( 1, *olen );
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assert( obuf != NULL );
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(void) unhexify( obuf, ibuf );
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return( obuf );
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}
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/**
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* This function just returns data from rand().
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* Although predictable and often similar on multiple
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* runs, this does not result in identical random on
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* each run. So do not use this if the results of a
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* test depend on the random data that is generated.
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*
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* rng_state shall be NULL.
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*/
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static int rnd_std_rand( void *rng_state, unsigned char *output, size_t len )
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{
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#if !defined(__OpenBSD__) && !defined(__NetBSD__)
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size_t i;
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if( rng_state != NULL )
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rng_state = NULL;
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for( i = 0; i < len; ++i )
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output[i] = rand();
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#else
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if( rng_state != NULL )
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rng_state = NULL;
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arc4random_buf( output, len );
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#endif /* !OpenBSD && !NetBSD */
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return( 0 );
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}
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/**
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* This function only returns zeros
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*
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* rng_state shall be NULL.
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*/
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int rnd_zero_rand( void *rng_state, unsigned char *output, size_t len )
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{
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if( rng_state != NULL )
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rng_state = NULL;
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memset( output, 0, len );
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return( 0 );
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}
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typedef struct
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{
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unsigned char *buf;
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size_t length;
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} rnd_buf_info;
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/**
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* This function returns random based on a buffer it receives.
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*
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* rng_state shall be a pointer to a rnd_buf_info structure.
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*
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* The number of bytes released from the buffer on each call to
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* the random function is specified by per_call. (Can be between
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* 1 and 4)
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*
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* After the buffer is empty it will return rand();
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*/
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int rnd_buffer_rand( void *rng_state, unsigned char *output, size_t len )
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{
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rnd_buf_info *info = (rnd_buf_info *) rng_state;
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size_t use_len;
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if( rng_state == NULL )
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return( rnd_std_rand( NULL, output, len ) );
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use_len = len;
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if( len > info->length )
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use_len = info->length;
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if( use_len )
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{
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memcpy( output, info->buf, use_len );
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info->buf += use_len;
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info->length -= use_len;
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}
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if( len - use_len > 0 )
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return( rnd_std_rand( NULL, output + use_len, len - use_len ) );
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return( 0 );
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}
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/**
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* Info structure for the pseudo random function
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*
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* Key should be set at the start to a test-unique value.
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* Do not forget endianness!
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* State( v0, v1 ) should be set to zero.
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*/
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typedef struct
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{
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uint32_t key[16];
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uint32_t v0, v1;
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} rnd_pseudo_info;
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/**
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* This function returns random based on a pseudo random function.
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* This means the results should be identical on all systems.
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* Pseudo random is based on the XTEA encryption algorithm to
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* generate pseudorandom.
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*
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* rng_state shall be a pointer to a rnd_pseudo_info structure.
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*/
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int rnd_pseudo_rand( void *rng_state, unsigned char *output, size_t len )
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{
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rnd_pseudo_info *info = (rnd_pseudo_info *) rng_state;
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uint32_t i, *k, sum, delta=0x9E3779B9;
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unsigned char result[4], *out = output;
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if( rng_state == NULL )
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return( rnd_std_rand( NULL, output, len ) );
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k = info->key;
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while( len > 0 )
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{
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size_t use_len = ( len > 4 ) ? 4 : len;
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sum = 0;
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for( i = 0; i < 32; i++ )
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{
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info->v0 += ( ( ( info->v1 << 4 ) ^ ( info->v1 >> 5 ) )
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+ info->v1 ) ^ ( sum + k[sum & 3] );
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sum += delta;
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info->v1 += ( ( ( info->v0 << 4 ) ^ ( info->v0 >> 5 ) )
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+ info->v0 ) ^ ( sum + k[( sum>>11 ) & 3] );
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}
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PUT_UINT32_BE( info->v0, result, 0 );
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memcpy( out, result, use_len );
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len -= use_len;
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out += 4;
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}
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return( 0 );
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}
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