/* Retrieves the start offset
* Returns 1 if successful or -1 on error
*/
int libexe_section_get_start_offset(
libexe_section_t *section,
off64_t *start_offset,
libcerror_error_t **error )
{
libexe_internal_section_t *internal_section = NULL;
static char *function = "libexe_section_get_start_offset";
size64_t segment_size = 0;
uint32_t segment_flags = 0;
int segment_file_index = 0;
if( section == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid section.",
function );
return( -1 );
}
internal_section = (libexe_internal_section_t *) section;
if( internal_section->section_descriptor == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,
"%s: invalid section - missing section descriptor.",
function );
return( -1 );
}
if( libfdata_stream_get_segment_by_index(
internal_section->section_descriptor->data_stream,
0,
&segment_file_index,
start_offset,
&segment_size,
&segment_flags,
error ) != 1 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_GET_FAILED,
"%s: unable to retrieve section data stream segment: 0.",
function );
return( -1 );
}
return( 1 );
}
/* Retrieves a specific extent (decoded data run)
* Returns 1 if successful or -1 on error
*/
int libfsntfs_data_stream_get_extent_by_index(
libfsntfs_data_stream_t *data_stream,
int extent_index,
off64_t *extent_offset,
size64_t *extent_size,
uint32_t *extent_flags,
libcerror_error_t **error )
{
libfsntfs_internal_data_stream_t *internal_data_stream = NULL;
static char *function = "libfsntfs_data_stream_get_extent_by_index";
size64_t data_size = 0;
uint32_t range_flags = 0;
int segment_file_index = 0;
if( data_stream == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid data stream.",
function );
return( -1 );
}
internal_data_stream = (libfsntfs_internal_data_stream_t *) data_stream;
if( internal_data_stream->data_cluster_block_stream == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_VALUE_OUT_OF_BOUNDS,
"%s: invalid extent index value out of bounds.",
function );
return( -1 );
}
if( extent_offset == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid extent offset.",
function );
return( -1 );
}
if( extent_size == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid extent size.",
function );
return( -1 );
}
if( extent_flags == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid extent flags.",
function );
return( -1 );
}
if( libfdata_stream_get_segment_by_index(
internal_data_stream->data_cluster_block_stream,
extent_index,
&segment_file_index,
extent_offset,
extent_size,
&range_flags,
error ) != 1 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_GET_FAILED,
"%s: unable to retrieve data cluster block stream segment: %d.",
function,
extent_index );
return( -1 );
}
if( libfdata_stream_get_segment_mapped_range(
internal_data_stream->data_cluster_block_stream,
extent_index,
extent_offset,
extent_size,
error ) != 1 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_GET_FAILED,
"%s: unable to retrieve data cluster block stream segment: %d mapped range.",
function,
extent_index );
return( -1 );
}
if( ( *extent_offset < 0 )
|| ( (size64_t) *extent_offset >= internal_data_stream->data_size ) )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_VALUE_OUT_OF_BOUNDS,
"%s: invalid extent offset value out of bounds.",
function );
return( -1 );
}
data_size = internal_data_stream->data_size - *extent_offset;
if( *extent_size > data_size )
{
*extent_size = data_size;
}
*extent_flags = 0;
if( ( range_flags & LIBFDATA_RANGE_FLAG_IS_SPARSE ) != 0 )
{
*extent_flags |= LIBFSNTFS_EXTENT_FLAG_IS_SPARSE;
}
if( ( range_flags & LIBFDATA_RANGE_FLAG_IS_COMPRESSED ) != 0 )
{
*extent_flags |= LIBFSNTFS_EXTENT_FLAG_IS_COMPRESSED;
}
return( 1 );
}
