/src/libscca/libscca/libscca_compressed_block.c

Source
/*
 * Compressed block functions
 *
 * Copyright (C) 2011-2025, Joachim Metz <joachim.metz@gmail.com>
 *
 * Refer to AUTHORS for acknowledgements.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

#include <common.h>
#include <byte_stream.h>
#include <memory.h>
#include <types.h>

#include "libscca_compressed_block.h"
#include "libscca_definitions.h"
#include "libscca_file.h"
#include "libscca_io_handle.h"
#include "libscca_libcerror.h"
#include "libscca_libcnotify.h"
#include "libscca_libfdata.h"
#include "libscca_libfwnt.h"
#include "libscca_unused.h"

/* Creates compressed block
 * Make sure the value compressed_block is referencing, is set to NULL
 * Returns 1 if successful or -1 on error
 */
int libscca_compressed_block_initialize(
     libscca_compressed_block_t **compressed_block,
     size_t data_size,
     libcerror_error_t **error )
{
  static char *function = "libscca_compressed_block_initialize";

  if( compressed_block == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
     "%s: invalid compressed block.",
     function );

    return( -1 );
  }
  if( *compressed_block != NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_RUNTIME,
     LIBCERROR_RUNTIME_ERROR_VALUE_ALREADY_SET,
     "%s: invalid compressed block value already set.",
     function );

    return( -1 );
  }
  if( ( data_size == 0 )
   || ( data_size > (size_t) MEMORY_MAXIMUM_ALLOCATION_SIZE ) )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS,
     "%s: invalid data size value out of bounds.",
     function );

    return( -1 );
  }
  *compressed_block = memory_allocate_structure(
                       libscca_compressed_block_t );

  if( *compressed_block == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_MEMORY,
     LIBCERROR_MEMORY_ERROR_INSUFFICIENT,
     "%s: unable to create compressed block.",
     function );

    goto on_error;
  }
  if( memory_set(
       *compressed_block,
       0,
       sizeof( libscca_compressed_block_t ) ) == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_MEMORY,
     LIBCERROR_MEMORY_ERROR_SET_FAILED,
     "%s: unable to clear compressed block.",
     function );

    memory_free(
     *compressed_block );

    *compressed_block = NULL;

    return( -1 );
  }
  ( *compressed_block )->data = (uint8_t *) memory_allocate(
                                             sizeof( uint8_t ) * data_size );

  if( ( *compressed_block )->data == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_MEMORY,
     LIBCERROR_MEMORY_ERROR_INSUFFICIENT,
     "%s: unable to create data.",
     function );

    goto on_error;
  }
  if( memory_set(
       ( *compressed_block )->data,
       0,
       sizeof( uint8_t ) * data_size ) == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_MEMORY,
     LIBCERROR_MEMORY_ERROR_SET_FAILED,
     "%s: unable to clear compressed block.",
     function );

    goto on_error;
  }
  ( *compressed_block )->data_size = data_size;

  return( 1 );

on_error:
  if( *compressed_block != NULL )
  {
    if( ( *compressed_block )->data != NULL )
    {
      memory_free(
       ( *compressed_block )->data );
    }
    memory_free(
     *compressed_block );

    *compressed_block = NULL;
  }
  return( -1 );
}

/* Frees compressed block
 * Returns 1 if successful or -1 on error
 */
int libscca_compressed_block_free(
     libscca_compressed_block_t **compressed_block,
     libcerror_error_t **error )
{
  static char *function = "libscca_compressed_block_free";

  if( compressed_block == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
     "%s: invalid compressed block.",
     function );

    return( -1 );
  }
  if( *compressed_block != NULL )
  {
    if( ( *compressed_block )->data != NULL )
    {
      memory_free(
       ( *compressed_block )->data );
    }
    memory_free(
     *compressed_block );

    *compressed_block = NULL;
  }
  return( 1 );
}

/* Reads a compressed block
 * Returns the number of bytes of read on success or -1 on error
 */
ssize_t libscca_compressed_block_read_file_io_handle(
         libscca_compressed_block_t *compressed_block,
         libbfio_handle_t *file_io_handle,
         off64_t compressed_block_offset,
         size_t compressed_block_size,
         libcerror_error_t **error )
{
  uint8_t *compressed_data      = NULL;
  static char *function         = "libscca_compressed_block_read_file_io_handle";
  size_t uncompressed_data_size = 0;
  ssize_t read_count            = 0;

  if( compressed_block == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
     "%s: invalid compressed block.",
     function );

    return( -1 );
  }
  if( ( compressed_block_size == 0 )
   || ( compressed_block_size > (size_t) MEMORY_MAXIMUM_ALLOCATION_SIZE ) )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS,
     "%s: invalid compressed block size value out of bounds.",
     function );

    return( -1 );
  }
  compressed_data = (uint8_t *) memory_allocate(
                                 sizeof( uint8_t ) * compressed_block_size );

  if( compressed_data == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_MEMORY,
     LIBCERROR_MEMORY_ERROR_INSUFFICIENT,
     "%s: unable to create compressed data at offset: %" PRIi64 " (0x%08" PRIx64 ").",
     function,
     compressed_block_offset,
     compressed_block_offset );

    goto on_error;
  }
  read_count = libbfio_handle_read_buffer_at_offset(
          file_io_handle,
          compressed_data,
          compressed_block_size,
          compressed_block_offset,
          error );

  if( read_count == -1 )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_IO,
     LIBCERROR_IO_ERROR_READ_FAILED,
     "%s: unable to read compressed block.",
     function );

    goto on_error;
  }
  uncompressed_data_size = compressed_block->data_size;

  if( libfwnt_lzxpress_huffman_decompress(
       compressed_data,
       (size_t) read_count,
       compressed_block->data,
       &uncompressed_data_size,
       error ) != 1 )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_COMPRESSION,
     LIBCERROR_COMPRESSION_ERROR_DECOMPRESS_FAILED,
     "%s: unable to decompress compressed data.",
     function );

    goto on_error;
  }
#if defined( HAVE_DEBUG_OUTPUT )
  if( libcnotify_verbose != 0 )
  {
    libcnotify_printf(
     "%s: uncompressed data:\n",
     function );
    libcnotify_print_data(
     compressed_block->data,
     compressed_block->data_size,
     LIBCNOTIFY_PRINT_DATA_FLAG_GROUP_DATA );
  }
#endif
  memory_free(
   compressed_data );

  compressed_data = NULL;

  return( read_count );

on_error:
  if( compressed_data != NULL )
  {
    memory_free(
     compressed_data );
  }
  return( -1 );
}

/* Reads a compressed block
 * Callback function for the compressed blocks list
 * Returns 1 if successful or -1 on error
 */
int libscca_compressed_block_read_element_data(
     libscca_io_handle_t *io_handle,
     libbfio_handle_t *file_io_handle,
     libfdata_list_element_t *element,
     libfdata_cache_t *cache,
     int element_file_index LIBSCCA_ATTRIBUTE_UNUSED,
     off64_t compressed_block_offset,
     size64_t compressed_block_size,
     uint32_t compressed_block_flags,
     uint8_t read_flags LIBSCCA_ATTRIBUTE_UNUSED,
     libcerror_error_t **error )
{
  libscca_compressed_block_t *compressed_block = NULL;
  static char *function                        = "libscca_compressed_block_read_element_data";
  size64_t uncompressed_size                   = 0;
  ssize_t read_count                           = 0;

  LIBSCCA_UNREFERENCED_PARAMETER( element_file_index )
  LIBSCCA_UNREFERENCED_PARAMETER( read_flags )

  if( io_handle == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
     "%s: invalid IO handle.",
     function );

    return( -1 );
  }
  if( io_handle->file_type != LIBSCCA_FILE_TYPE_COMPRESSED_WINDOWS10 )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_RUNTIME,
     LIBCERROR_RUNTIME_ERROR_UNSUPPORTED_VALUE,
     "%s: invalid IO handle - unsupported file type.",
     function );

    return( -1 );
  }
  if( compressed_block_size > (size64_t) SSIZE_MAX )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS,
     "%s: invalid compressed block size value out of bounds.",
     function );

    return( -1 );
  }
  if( ( compressed_block_flags & LIBFDATA_RANGE_FLAG_IS_COMPRESSED ) == 0 )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_RUNTIME,
     LIBCERROR_RUNTIME_ERROR_UNSUPPORTED_VALUE,
     "%s: compressed range flags not set.",
     function );

    return( -1 );
  }
  if( libfdata_list_element_get_mapped_size(
       element,
       &uncompressed_size,
       error ) != 1 )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_RUNTIME,
     LIBCERROR_RUNTIME_ERROR_GET_FAILED,
     "%s: unable to retrieve list element mapped size.",
     function );

    goto on_error;
  }
  if( libscca_compressed_block_initialize(
       &compressed_block,
       (size_t) uncompressed_size,
       error ) != 1 )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_RUNTIME,
     LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED,
     "%s: unable to create compressed block.",
     function );

    goto on_error;
  }
  read_count = libscca_compressed_block_read_file_io_handle(
                compressed_block,
                file_io_handle,
                compressed_block_offset,
                (size_t) compressed_block_size,
                error );

  if( read_count != (ssize_t) compressed_block_size )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_IO,
     LIBCERROR_IO_ERROR_READ_FAILED,
     "%s: unable to read compressed block.",
     function );

    goto on_error;
  }
#if defined( HAVE_DEBUG_OUTPUT )
  if( libcnotify_verbose != 0 )
  {
    libcnotify_printf(
     "%s: uncompressed data:\n",
     function );
    libcnotify_print_data(
     compressed_block->data,
     compressed_block->data_size,
     LIBCNOTIFY_PRINT_DATA_FLAG_GROUP_DATA );
  }
#endif
  if( libfdata_list_element_set_element_value(
       element,
       (intptr_t *) file_io_handle,
       cache,
       (intptr_t *) compressed_block,
       (int (*)(intptr_t **, libcerror_error_t **)) &libscca_compressed_block_free,
       LIBFDATA_LIST_ELEMENT_VALUE_FLAG_MANAGED,
       error ) != 1 )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_RUNTIME,
     LIBCERROR_RUNTIME_ERROR_SET_FAILED,
     "%s: unable to set compressed block as element value.",
     function );

    goto on_error;
  }
  return( 1 );

on_error:
  if( compressed_block != NULL )
  {
    libscca_compressed_block_free(
     &compressed_block,
     NULL );
  }
  return( -1 );
}


Coverage Report

Created: 2025-12-05 07:13

Line	Count	Source
1		/*
2		* Compressed block functions
3		*
4		* Copyright (C) 2011-2025, Joachim Metz <joachim.metz@gmail.com>
5		*
6		* Refer to AUTHORS for acknowledgements.
7		*
8		* This program is free software: you can redistribute it and/or modify
9		* it under the terms of the GNU Lesser General Public License as published by
10		* the Free Software Foundation, either version 3 of the License, or
11		* (at your option) any later version.
12		*
13		* This program is distributed in the hope that it will be useful,
14		* but WITHOUT ANY WARRANTY; without even the implied warranty of
15		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16		* GNU General Public License for more details.
17		*
18		* You should have received a copy of the GNU Lesser General Public License
19		* along with this program. If not, see <https://www.gnu.org/licenses/>.
20		*/
21
22		#include <common.h>
23		#include <byte_stream.h>
24		#include <memory.h>
25		#include <types.h>
26
27		#include "libscca_compressed_block.h"
28		#include "libscca_definitions.h"
29		#include "libscca_file.h"
30		#include "libscca_io_handle.h"
31		#include "libscca_libcerror.h"
32		#include "libscca_libcnotify.h"
33		#include "libscca_libfdata.h"
34		#include "libscca_libfwnt.h"
35		#include "libscca_unused.h"
36
37		/* Creates compressed block
38		* Make sure the value compressed_block is referencing, is set to NULL
39		* Returns 1 if successful or -1 on error
40		*/
41		int libscca_compressed_block_initialize(
42		libscca_compressed_block_t **compressed_block,
43		size_t data_size,
44		libcerror_error_t **error )
45	372	{
46	372	static char *function = "libscca_compressed_block_initialize";
47
48	372	if( compressed_block == NULL )
49	0	{
50	0	libcerror_error_set(
51	0	error,
52	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
53	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
54	0	"%s: invalid compressed block.",
55	0	function );
56
57	0	return( -1 );
58	0	}
59	372	if( *compressed_block != NULL )
60	0	{
61	0	libcerror_error_set(
62	0	error,
63	0	LIBCERROR_ERROR_DOMAIN_RUNTIME,
64	0	LIBCERROR_RUNTIME_ERROR_VALUE_ALREADY_SET,
65	0	"%s: invalid compressed block value already set.",
66	0	function );
67
68	0	return( -1 );
69	0	}
70	372	if( ( data_size == 0 )
71	370	\|\| ( data_size > (size_t) MEMORY_MAXIMUM_ALLOCATION_SIZE ) )
72	11	{
73	11	libcerror_error_set(
74	11	error,
75	11	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
76	11	LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS,
77	11	"%s: invalid data size value out of bounds.",
78	11	function );
79
80	11	return( -1 );
81	11	}
82	361	*compressed_block = memory_allocate_structure(
83	361	libscca_compressed_block_t );
84
85	361	if( *compressed_block == NULL )
86	0	{
87	0	libcerror_error_set(
88	0	error,
89	0	LIBCERROR_ERROR_DOMAIN_MEMORY,
90	0	LIBCERROR_MEMORY_ERROR_INSUFFICIENT,
91	0	"%s: unable to create compressed block.",
92	0	function );
93
94	0	goto on_error;
95	0	}
96	361	if( memory_set(
97	361	*compressed_block,
98	361	0,
99	361	sizeof( libscca_compressed_block_t ) ) == NULL )
100	0	{
101	0	libcerror_error_set(
102	0	error,
103	0	LIBCERROR_ERROR_DOMAIN_MEMORY,
104	0	LIBCERROR_MEMORY_ERROR_SET_FAILED,
105	0	"%s: unable to clear compressed block.",
106	0	function );
107
108	0	memory_free(
109	0	*compressed_block );
110
111	0	*compressed_block = NULL;
112
113	0	return( -1 );
114	0	}
115	361	( compressed_block )->data = (uint8_t ) memory_allocate(
116	361	sizeof( uint8_t ) * data_size );
117
118	361	if( ( *compressed_block )->data == NULL )
119	0	{
120	0	libcerror_error_set(
121	0	error,
122	0	LIBCERROR_ERROR_DOMAIN_MEMORY,
123	0	LIBCERROR_MEMORY_ERROR_INSUFFICIENT,
124	0	"%s: unable to create data.",
125	0	function );
126
127	0	goto on_error;
128	0	}
129	361	if( memory_set(
130	361	( *compressed_block )->data,
131	361	0,
132	361	sizeof( uint8_t ) * data_size ) == NULL )
133	0	{
134	0	libcerror_error_set(
135	0	error,
136	0	LIBCERROR_ERROR_DOMAIN_MEMORY,
137	0	LIBCERROR_MEMORY_ERROR_SET_FAILED,
138	0	"%s: unable to clear compressed block.",
139	0	function );
140
141	0	goto on_error;
142	0	}
143	361	( *compressed_block )->data_size = data_size;
144
145	361	return( 1 );
146
147	0	on_error:
148	0	if( *compressed_block != NULL )
149	0	{
150	0	if( ( *compressed_block )->data != NULL )
151	0	{
152	0	memory_free(
153	0	( *compressed_block )->data );
154	0	}
155	0	memory_free(
156	0	*compressed_block );
157
158	0	*compressed_block = NULL;
159	0	}
160	0	return( -1 );
161	361	}
162
163		/* Frees compressed block
164		* Returns 1 if successful or -1 on error
165		*/
166		int libscca_compressed_block_free(
167		libscca_compressed_block_t **compressed_block,
168		libcerror_error_t **error )
169	361	{
170	361	static char *function = "libscca_compressed_block_free";
171
172	361	if( compressed_block == NULL )
173	0	{
174	0	libcerror_error_set(
175	0	error,
176	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
177	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
178	0	"%s: invalid compressed block.",
179	0	function );
180
181	0	return( -1 );
182	0	}
183	361	if( *compressed_block != NULL )
184	361	{
185	361	if( ( *compressed_block )->data != NULL )
186	361	{
187	361	memory_free(
188	361	( *compressed_block )->data );
189	361	}
190	361	memory_free(
191	361	*compressed_block );
192
193	361	*compressed_block = NULL;
194	361	}
195	361	return( 1 );
196	361	}
197
198		/* Reads a compressed block
199		* Returns the number of bytes of read on success or -1 on error
200		*/
201		ssize_t libscca_compressed_block_read_file_io_handle(
202		libscca_compressed_block_t *compressed_block,
203		libbfio_handle_t *file_io_handle,
204		off64_t compressed_block_offset,
205		size_t compressed_block_size,
206		libcerror_error_t **error )
207	361	{
208	361	uint8_t *compressed_data = NULL;
209	361	static char *function = "libscca_compressed_block_read_file_io_handle";
210	361	size_t uncompressed_data_size = 0;
211	361	ssize_t read_count = 0;
212
213	361	if( compressed_block == NULL )
214	0	{
215	0	libcerror_error_set(
216	0	error,
217	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
218	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
219	0	"%s: invalid compressed block.",
220	0	function );
221
222	0	return( -1 );
223	0	}
224	361	if( ( compressed_block_size == 0 )
225	361	\|\| ( compressed_block_size > (size_t) MEMORY_MAXIMUM_ALLOCATION_SIZE ) )
226	0	{
227	0	libcerror_error_set(
228	0	error,
229	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
230	0	LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS,
231	0	"%s: invalid compressed block size value out of bounds.",
232	0	function );
233
234	0	return( -1 );
235	0	}
236	361	compressed_data = (uint8_t *) memory_allocate(
237	361	sizeof( uint8_t ) * compressed_block_size );
238
239	361	if( compressed_data == NULL )
240	0	{
241	0	libcerror_error_set(
242	0	error,
243	0	LIBCERROR_ERROR_DOMAIN_MEMORY,
244	0	LIBCERROR_MEMORY_ERROR_INSUFFICIENT,
245	0	"%s: unable to create compressed data at offset: %" PRIi64 " (0x%08" PRIx64 ").",
246	0	function,
247	0	compressed_block_offset,
248	0	compressed_block_offset );
249
250	0	goto on_error;
251	0	}
252	361	read_count = libbfio_handle_read_buffer_at_offset(
253	361	file_io_handle,
254	361	compressed_data,
255	361	compressed_block_size,
256	361	compressed_block_offset,
257	361	error );
258
259	361	if( read_count == -1 )
260	0	{
261	0	libcerror_error_set(
262	0	error,
263	0	LIBCERROR_ERROR_DOMAIN_IO,
264	0	LIBCERROR_IO_ERROR_READ_FAILED,
265	0	"%s: unable to read compressed block.",
266	0	function );
267
268	0	goto on_error;
269	0	}
270	361	uncompressed_data_size = compressed_block->data_size;
271
272	361	if( libfwnt_lzxpress_huffman_decompress(
273	361	compressed_data,
274	361	(size_t) read_count,
275	361	compressed_block->data,
276	361	&uncompressed_data_size,
277	361	error ) != 1 )
278	225	{
279	225	libcerror_error_set(
280	225	error,
281	225	LIBCERROR_ERROR_DOMAIN_COMPRESSION,
282	225	LIBCERROR_COMPRESSION_ERROR_DECOMPRESS_FAILED,
283	225	"%s: unable to decompress compressed data.",
284	225	function );
285
286	225	goto on_error;
287	225	}
288		#if defined( HAVE_DEBUG_OUTPUT )
289		if( libcnotify_verbose != 0 )
290		{
291		libcnotify_printf(
292		"%s: uncompressed data:\n",
293		function );
294		libcnotify_print_data(
295		compressed_block->data,
296		compressed_block->data_size,
297		LIBCNOTIFY_PRINT_DATA_FLAG_GROUP_DATA );
298		}
299		#endif
300	136	memory_free(
301	136	compressed_data );
302
303	136	compressed_data = NULL;
304
305	136	return( read_count );
306
307	225	on_error:
308	225	if( compressed_data != NULL )
309	225	{
310	225	memory_free(
311	225	compressed_data );
312	225	}
313	225	return( -1 );
314	361	}
315
316		/* Reads a compressed block
317		* Callback function for the compressed blocks list
318		* Returns 1 if successful or -1 on error
319		*/
320		int libscca_compressed_block_read_element_data(
321		libscca_io_handle_t *io_handle,
322		libbfio_handle_t *file_io_handle,
323		libfdata_list_element_t *element,
324		libfdata_cache_t *cache,
325		int element_file_index LIBSCCA_ATTRIBUTE_UNUSED,
326		off64_t compressed_block_offset,
327		size64_t compressed_block_size,
328		uint32_t compressed_block_flags,
329		uint8_t read_flags LIBSCCA_ATTRIBUTE_UNUSED,
330		libcerror_error_t **error )
331	0	{
332	0	libscca_compressed_block_t *compressed_block = NULL;
333	0	static char *function = "libscca_compressed_block_read_element_data";
334	0	size64_t uncompressed_size = 0;
335	0	ssize_t read_count = 0;
336
337	0	LIBSCCA_UNREFERENCED_PARAMETER( element_file_index )
338	0	LIBSCCA_UNREFERENCED_PARAMETER( read_flags )
339
340	0	if( io_handle == NULL )
341	0	{
342	0	libcerror_error_set(
343	0	error,
344	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
345	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
346	0	"%s: invalid IO handle.",
347	0	function );
348
349	0	return( -1 );
350	0	}
351	0	if( io_handle->file_type != LIBSCCA_FILE_TYPE_COMPRESSED_WINDOWS10 )
352	0	{
353	0	libcerror_error_set(
354	0	error,
355	0	LIBCERROR_ERROR_DOMAIN_RUNTIME,
356	0	LIBCERROR_RUNTIME_ERROR_UNSUPPORTED_VALUE,
357	0	"%s: invalid IO handle - unsupported file type.",
358	0	function );
359
360	0	return( -1 );
361	0	}
362	0	if( compressed_block_size > (size64_t) SSIZE_MAX )
363	0	{
364	0	libcerror_error_set(
365	0	error,
366	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
367	0	LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS,
368	0	"%s: invalid compressed block size value out of bounds.",
369	0	function );
370
371	0	return( -1 );
372	0	}
373	0	if( ( compressed_block_flags & LIBFDATA_RANGE_FLAG_IS_COMPRESSED ) == 0 )
374	0	{
375	0	libcerror_error_set(
376	0	error,
377	0	LIBCERROR_ERROR_DOMAIN_RUNTIME,
378	0	LIBCERROR_RUNTIME_ERROR_UNSUPPORTED_VALUE,
379	0	"%s: compressed range flags not set.",
380	0	function );
381
382	0	return( -1 );
383	0	}
384	0	if( libfdata_list_element_get_mapped_size(
385	0	element,
386	0	&uncompressed_size,
387	0	error ) != 1 )
388	0	{
389	0	libcerror_error_set(
390	0	error,
391	0	LIBCERROR_ERROR_DOMAIN_RUNTIME,
392	0	LIBCERROR_RUNTIME_ERROR_GET_FAILED,
393	0	"%s: unable to retrieve list element mapped size.",
394	0	function );
395
396	0	goto on_error;
397	0	}
398	0	if( libscca_compressed_block_initialize(
399	0	&compressed_block,
400	0	(size_t) uncompressed_size,
401	0	error ) != 1 )
402	0	{
403	0	libcerror_error_set(
404	0	error,
405	0	LIBCERROR_ERROR_DOMAIN_RUNTIME,
406	0	LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED,
407	0	"%s: unable to create compressed block.",
408	0	function );
409
410	0	goto on_error;
411	0	}
412	0	read_count = libscca_compressed_block_read_file_io_handle(
413	0	compressed_block,
414	0	file_io_handle,
415	0	compressed_block_offset,
416	0	(size_t) compressed_block_size,
417	0	error );
418
419	0	if( read_count != (ssize_t) compressed_block_size )
420	0	{
421	0	libcerror_error_set(
422	0	error,
423	0	LIBCERROR_ERROR_DOMAIN_IO,
424	0	LIBCERROR_IO_ERROR_READ_FAILED,
425	0	"%s: unable to read compressed block.",
426	0	function );
427
428	0	goto on_error;
429	0	}
430		#if defined( HAVE_DEBUG_OUTPUT )
431		if( libcnotify_verbose != 0 )
432		{
433		libcnotify_printf(
434		"%s: uncompressed data:\n",
435		function );
436		libcnotify_print_data(
437		compressed_block->data,
438		compressed_block->data_size,
439		LIBCNOTIFY_PRINT_DATA_FLAG_GROUP_DATA );
440		}
441		#endif
442	0	if( libfdata_list_element_set_element_value(
443	0	element,
444	0	(intptr_t *) file_io_handle,
445	0	cache,
446	0	(intptr_t *) compressed_block,
447	0	(int ()(intptr_t , libcerror_error_t *)) &libscca_compressed_block_free,
448	0	LIBFDATA_LIST_ELEMENT_VALUE_FLAG_MANAGED,
449	0	error ) != 1 )
450	0	{
451	0	libcerror_error_set(
452	0	error,
453	0	LIBCERROR_ERROR_DOMAIN_RUNTIME,
454	0	LIBCERROR_RUNTIME_ERROR_SET_FAILED,
455	0	"%s: unable to set compressed block as element value.",
456	0	function );
457
458	0	goto on_error;
459	0	}
460	0	return( 1 );
461
462	0	on_error:
463	0	if( compressed_block != NULL )
464	0	{
465	0	libscca_compressed_block_free(
466	0	&compressed_block,
467		NULL );
468	0	}
469	0	return( -1 );
470	0	}
471