/* Tests reading chunks at a specific offset
* Returns 1 if successful, 0 if not or -1 on error
*/
int ewf_test_read_chunk_at_offset(
libewf_handle_t *handle,
size32_t chunk_size,
off64_t input_offset,
int input_whence,
size64_t input_size,
off64_t expected_offset,
size64_t expected_size )
{
libcerror_error_t *error = NULL;
uint8_t *chunk_buffer = NULL;
uint8_t *data_buffer = NULL;
const char *whence_string = NULL;
size_t chunk_buffer_size = 0;
size_t data_buffer_size = 0;
int result = 0;
if( chunk_size == 0 )
{
return( -1 );
}
#if SIZEOF_SIZE_T < 8
if( (size_t) chunk_size > (size_t) SSIZE_MAX )
{
return( -1 );
}
#endif
if( input_whence == SEEK_CUR )
{
whence_string = "SEEK_CUR";
}
else if( input_whence == SEEK_END )
{
whence_string = "SEEK_END";
}
else if( input_whence == SEEK_SET )
{
whence_string = "SEEK_SET";
}
else
{
whence_string = "UNKNOWN";
}
fprintf(
stdout,
"Testing reading range with offset: %" PRIi64 ", whence: %s and size: %" PRIu64 "\t",
input_offset,
whence_string,
input_size );
result = ewf_test_seek_offset(
handle,
input_offset,
input_whence,
expected_offset,
&error );
data_buffer_size = chunk_size;
data_buffer = (uint8_t *) memory_allocate(
sizeof( uint8_t ) * data_buffer_size );
/* The chunk buffer should at least have a size of: chunk_size + 16
*/
chunk_buffer_size = chunk_size * 2;
chunk_buffer = (uint8_t *) memory_allocate(
sizeof( uint8_t ) * chunk_buffer_size );
if( result == 1 )
{
if( input_offset >= 0 )
{
result = ewf_test_read_chunk(
handle,
data_buffer,
data_buffer_size,
chunk_buffer,
chunk_buffer_size,
input_size,
expected_size,
&error );
}
}
memory_free(
chunk_buffer );
memory_free(
data_buffer );
if( result == 1 )
{
if( input_offset >= 0 )
{
result = ewf_test_get_offset(
handle,
input_offset - ( input_offset % chunk_size ) + expected_size,
&error );
}
}
if( result != 0 )
{
fprintf(
stdout,
"(PASS)" );
}
else
{
fprintf(
stdout,
"(FAIL)" );
}
fprintf(
stdout,
"\n" );
if( result == -1 )
{
libcerror_error_backtrace_fprint(
error,
stderr );
libcerror_error_free(
&error );
}
return( result );
}
/* Tests seeking in a handle
* Returns 1 if successful, 0 if not or -1 on error
*/
int ewf_test_seek(
libewf_handle_t *handle,
size64_t media_size )
{
int result = 0;
if( handle == NULL )
{
return( -1 );
}
if( media_size > (size64_t) INT64_MAX )
{
fprintf(
stderr,
"Media size exceeds maximum.\n" );
return( -1 );
}
/* Test: SEEK_SET offset: 0
* Expected result: 0
*/
result = ewf_test_seek_offset(
handle,
0,
SEEK_SET,
0 );
if( result != 1 )
{
fprintf(
stderr,
"Unable to test seek offset.\n" );
return( result );
}
/* Test: SEEK_SET offset: <media_size>
* Expected result: <media_size>
*/
result = ewf_test_seek_offset(
handle,
(off64_t) media_size,
SEEK_SET,
(off64_t) media_size );
if( result != 1 )
{
fprintf(
stderr,
"Unable to test seek offset.\n" );
return( result );
}
/* Test: SEEK_SET offset: <media_size / 5>
* Expected result: <media_size / 5>
*/
result = ewf_test_seek_offset(
handle,
(off64_t) ( media_size / 5 ),
SEEK_SET,
(off64_t) ( media_size / 5 ) );
if( result != 1 )
{
fprintf(
stderr,
"Unable to test seek offset.\n" );
return( result );
}
/* Test: SEEK_SET offset: <media_size + 987>
* Expected result: <media_size + 987>
*/
result = ewf_test_seek_offset(
handle,
(off64_t) ( media_size + 987 ),
SEEK_SET,
(off64_t) ( media_size + 987 ) );
if( result != 1 )
{
fprintf(
stderr,
"Unable to test seek offset.\n" );
return( result );
}
/* Test: SEEK_SET offset: -987
* Expected result: -1
*/
result = ewf_test_seek_offset(
handle,
-987,
SEEK_SET,
-1 );
if( result != 1 )
{
fprintf(
stderr,
"Unable to test seek offset.\n" );
return( result );
}
/* Test: SEEK_CUR offset: 0
* Expected result: <media_size + 987>
*/
result = ewf_test_seek_offset(
handle,
0,
SEEK_CUR,
(off64_t) ( media_size + 987 ) );
if( result != 1 )
{
fprintf(
stderr,
"Unable to test seek offset.\n" );
return( result );
}
/* Test: SEEK_CUR offset: <-1 * (media_size + 987)>
* Expected result: 0
*/
result = ewf_test_seek_offset(
handle,
-1 * (off64_t) ( media_size + 987 ),
SEEK_CUR,
0 );
if( result != 1 )
{
fprintf(
stderr,
"Unable to test seek offset.\n" );
return( result );
}
/* Test: SEEK_CUR offset: <media_size / 3>
* Expected result: <media_size / 3>
*/
result = ewf_test_seek_offset(
handle,
(off64_t) ( media_size / 3 ),
SEEK_CUR,
(off64_t) ( media_size / 3 ) );
if( result != 1 )
{
fprintf(
stderr,
"Unable to test seek offset.\n" );
return( result );
}
if( media_size == 0 )
{
/* Test: SEEK_CUR offset: <-2 * (media_size / 3)>
* Expected result: 0
*/
result = ewf_test_seek_offset(
handle,
-2 * (off64_t) ( media_size / 3 ),
SEEK_CUR,
0 );
if( result != 1 )
{
fprintf(
stderr,
"Unable to test seek offset.\n" );
return( result );
}
}
else
{
/* Test: SEEK_CUR offset: <-2 * (media_size / 3)>
* Expected result: -1
*/
result = ewf_test_seek_offset(
handle,
-2 * (off64_t) ( media_size / 3 ),
SEEK_CUR,
-1 );
if( result != 1 )
{
fprintf(
stderr,
"Unable to test seek offset.\n" );
return( result );
}
}
/* Test: SEEK_END offset: 0
* Expected result: <media_size>
*/
result = ewf_test_seek_offset(
handle,
0,
SEEK_END,
(off64_t) media_size );
if( result != 1 )
{
fprintf(
stderr,
"Unable to test seek offset.\n" );
return( result );
}
/* Test: SEEK_END offset: <-1 * media_size>
* Expected result: 0
*/
result = ewf_test_seek_offset(
handle,
-1 * (off64_t) media_size,
SEEK_END,
0 );
if( result != 1 )
{
fprintf(
stderr,
"Unable to test seek offset.\n" );
return( result );
}
/* Test: SEEK_END offset: <-1 * (media_size / 4)>
* Expected result: <media_size - (media_size / 4)>
*/
result = ewf_test_seek_offset(
handle,
-1 * (off64_t) ( media_size / 4 ),
SEEK_END,
(off64_t) media_size - (off64_t) ( media_size / 4 ) );
if( result != 1 )
{
fprintf(
stderr,
"Unable to test seek offset.\n" );
return( result );
}
/* Test: SEEK_END offset: 542
* Expected result: <media_size + 542>
*/
result = ewf_test_seek_offset(
handle,
542,
SEEK_END,
(off64_t) ( media_size + 542 ) );
if( result != 1 )
{
fprintf(
stderr,
"Unable to test seek offset.\n" );
return( result );
}
/* Test: SEEK_END offset: <-1 * (media_size + 542)>
* Expected result: -1
*/
result = ewf_test_seek_offset(
handle,
-1 * (off64_t) ( media_size + 542 ),
SEEK_END,
-1 );
if( result != 1 )
{
fprintf(
stderr,
"Unable to test seek offset.\n" );
return( result );
}
/* Test: UNKNOWN (88) offset: 0
* Expected result: -1
*/
result = ewf_test_seek_offset(
handle,
0,
88,
-1 );
if( result != 1 )
{
fprintf(
stderr,
"Unable to test seek offset.\n" );
return( result );
}
return( result );
}
/* Tests reading a buffers at a specific offset
* Returns 1 if successful, 0 if not or -1 on error
*/
int ewf_test_read_buffer_at_offset(
libewf_handle_t *handle,
off64_t input_offset,
int input_whence,
size64_t input_size,
off64_t expected_offset,
size64_t expected_size )
{
libcerror_error_t *error = NULL;
uint8_t *buffer = NULL;
const char *whence_string = NULL;
int result = 0;
if( input_whence == SEEK_CUR )
{
whence_string = "SEEK_CUR";
}
else if( input_whence == SEEK_END )
{
whence_string = "SEEK_END";
}
else if( input_whence == SEEK_SET )
{
whence_string = "SEEK_SET";
}
else
{
whence_string = "UNKNOWN";
}
fprintf(
stdout,
"Testing reading range with offset: %" PRIi64 ", whence: %s and size: %" PRIu64 "\t",
input_offset,
whence_string,
input_size );
buffer = (uint8_t *) memory_allocate(
EWF_TEST_BUFFER_SIZE );
result = ewf_test_seek_offset(
handle,
input_offset,
input_whence,
expected_offset,
&error );
if( result == 1 )
{
if( input_offset >= 0 )
{
result = ewf_test_read_buffer(
handle,
buffer,
EWF_TEST_BUFFER_SIZE,
input_size,
expected_size,
&error );
}
}
if( result == 1 )
{
if( input_offset >= 0 )
{
result = ewf_test_get_offset(
handle,
input_offset + expected_size,
&error );
}
}
memory_free(
buffer );
if( result != 0 )
{
fprintf(
stdout,
"(PASS)" );
}
else
{
fprintf(
stdout,
"(FAIL)" );
}
fprintf(
stdout,
"\n" );
if( result == -1 )
{
libcerror_error_backtrace_fprint(
error,
stderr );
libcerror_error_free(
&error );
}
return( result );
}
