/src/libmdmp/libmdmp/libmdmp_stream.c

Source (jump to first uncovered line)
/*
 * Section functions
 *
 * Copyright (C) 2014-2024, 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 <memory.h>
#include <types.h>

#include "libmdmp_definitions.h"
#include "libmdmp_io_handle.h"
#include "libmdmp_libbfio.h"
#include "libmdmp_libcerror.h"
#include "libmdmp_libfdata.h"
#include "libmdmp_libuna.h"
#include "libmdmp_stream.h"
#include "libmdmp_stream_io_handle.h"

/* Creates a stream
 * Make sure the value stream is referencing, is set to NULL
 * Returns 1 if successful or -1 on error
 */
int libmdmp_stream_initialize(
     libmdmp_stream_t **stream,
     libmdmp_io_handle_t *io_handle,
     libbfio_handle_t *file_io_handle,
     libmdmp_stream_descriptor_t *stream_descriptor,
     libcerror_error_t **error )
{
  libmdmp_internal_stream_t *internal_stream = NULL;
  static char *function                      = "libmdmp_stream_initialize";

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

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

    return( -1 );
  }
  if( stream_descriptor == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
     "%s: invalid stream descriptor.",
     function );

    return( -1 );
  }
  internal_stream = memory_allocate_structure(
                     libmdmp_internal_stream_t );

  if( internal_stream == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_RUNTIME,
     LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED,
     "%s: unable to create internal stream.",
     function );

    goto on_error;
  }
  if( memory_set(
       internal_stream,
       0,
       sizeof( libmdmp_internal_stream_t ) ) == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_MEMORY,
     LIBCERROR_MEMORY_ERROR_SET_FAILED,
     "%s: unable to clear internal stream.",
     function );

    memory_free(
     internal_stream );

    return( -1 );
  }
  internal_stream->file_io_handle    = file_io_handle;
  internal_stream->io_handle         = io_handle;
  internal_stream->stream_descriptor = stream_descriptor;

  *stream = (libmdmp_stream_t *) internal_stream;

  return( 1 );

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

/* Frees a stream
 * Returns 1 if successful or -1 on error
 */
int libmdmp_stream_free(
     libmdmp_stream_t **stream,
     libcerror_error_t **error )
{
  libmdmp_internal_stream_t *internal_stream = NULL;
  static char *function                      = "libmdmp_stream_free";

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

    return( -1 );
  }
  if( *stream != NULL )
  {
    internal_stream = (libmdmp_internal_stream_t *) *stream;
    *stream         = NULL;

    /* The file_io_handle, io_handle and stream_descriptor references are freed elsewhere
     */
    memory_free(
     internal_stream );
  }
  return( 1 );
}

/* Retrieves the type
 * Returns 1 if successful or -1 on error
 */
int libmdmp_stream_get_type(
     libmdmp_stream_t *stream,
     uint32_t *type,
     libcerror_error_t **error )
{
  libmdmp_internal_stream_t *internal_stream = NULL;
  static char *function                      = "libmdmp_stream_get_type";

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

    return( -1 );
  }
  internal_stream = (libmdmp_internal_stream_t *) stream;

  if( internal_stream->stream_descriptor == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_RUNTIME,
     LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,
     "%s: invalid internal stream - missing stream descriptor.",
     function );

    return( -1 );
  }
  if( type == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
     "%s: invalid type.",
     function );

    return( -1 );
  }
  *type = internal_stream->stream_descriptor->type;

  return( 1 );
}

/* Reads data at the current offset into a buffer
 * Returns the number of bytes read or -1 on error
 */
ssize_t libmdmp_stream_read_buffer(
         libmdmp_stream_t *stream,
         void *buffer,
         size_t buffer_size,
         libcerror_error_t **error )
{
  libmdmp_internal_stream_t *internal_stream = NULL;
  static char *function                      = "libmdmp_stream_read_buffer";
  ssize_t read_count                         = 0;

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

    return( -1 );
  }
  internal_stream = (libmdmp_internal_stream_t *) stream;

  if( internal_stream->stream_descriptor == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_RUNTIME,
     LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,
     "%s: invalid stream - missing stream descriptor.",
     function );

    return( -1 );
  }
  read_count = libfdata_stream_read_buffer(
                internal_stream->stream_descriptor->data_stream,
                (intptr_t *) internal_stream->file_io_handle,
                buffer,
                buffer_size,
                0,
                error );

  if( read_count == -1 )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_IO,
     LIBCERROR_IO_ERROR_READ_FAILED,
     "%s: unable to read buffer from stream data stream.",
     function );

    return( -1 );
  }
  return( read_count );
}

/* Reads data at a specific offset into a buffer
 * Returns the number of bytes read or -1 on error
 */
ssize_t libmdmp_stream_read_buffer_at_offset(
         libmdmp_stream_t *stream,
         void *buffer,
         size_t buffer_size,
         off64_t offset,
         libcerror_error_t **error )
{
  static char *function = "libmdmp_stream_read_buffer_at_offset";
  ssize_t read_count    = 0;

  if( libmdmp_stream_seek_offset(
       stream,
       offset,
       SEEK_SET,
       error ) == -1 )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_IO,
     LIBCERROR_IO_ERROR_SEEK_FAILED,
     "%s: unable to seek offset.",
     function );

    return( -1 );
  }
  read_count = libmdmp_stream_read_buffer(
                stream,
                buffer,
                buffer_size,
                error );

  if( read_count < 0 )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_IO,
     LIBCERROR_IO_ERROR_READ_FAILED,
     "%s: unable to read buffer.",
     function );

    return( -1 );
  }
  return( read_count );
}

/* Seeks a certain offset of the data
 * Returns the offset if seek is successful or -1 on error
 */
off64_t libmdmp_stream_seek_offset(
         libmdmp_stream_t *stream,
         off64_t offset,
         int whence,
         libcerror_error_t **error )
{
  libmdmp_internal_stream_t *internal_stream = NULL;
  static char *function                      = "libmdmp_stream_seek_offset";

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

    return( -1 );
  }
  internal_stream = (libmdmp_internal_stream_t *) stream;

  if( internal_stream->stream_descriptor == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_RUNTIME,
     LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,
     "%s: invalid stream - missing stream descriptor.",
     function );

    return( -1 );
  }
  offset = libfdata_stream_seek_offset(
            internal_stream->stream_descriptor->data_stream,
            offset,
            whence,
            error );

  if( offset == -1 )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_IO,
     LIBCERROR_IO_ERROR_SEEK_FAILED,
     "%s: unable to seek in stream data stream.",
     function );

    return( -1 );
  }
  return( offset );
}

/* Retrieves the (current) offset
 * Returns 1 if successful or -1 on error
 */
int libmdmp_stream_get_offset(
     libmdmp_stream_t *stream,
     off64_t *offset,
     libcerror_error_t **error )
{
  libmdmp_internal_stream_t *internal_stream = NULL;
  static char *function                      = "libmdmp_stream_get_offset";

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

    return( -1 );
  }
  internal_stream = (libmdmp_internal_stream_t *) stream;

  if( internal_stream->stream_descriptor == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_RUNTIME,
     LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,
     "%s: invalid stream - missing stream descriptor.",
     function );

    return( -1 );
  }
  if( libfdata_stream_get_offset(
       internal_stream->stream_descriptor->data_stream,
       offset,
       error ) != 1 )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_RUNTIME,
     LIBCERROR_RUNTIME_ERROR_GET_FAILED,
     "%s: unable to retrieve stream data stream offset.",
     function );

    return( -1 );
  }
  return( 1 );
}

/* Retrieves the size
 * Returns 1 if successful or -1 on error
 */
int libmdmp_stream_get_size(
     libmdmp_stream_t *stream,
     size64_t *size,
     libcerror_error_t **error )
{
  libmdmp_internal_stream_t *internal_stream = NULL;
  static char *function                      = "libmdmp_stream_get_size";

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

    return( -1 );
  }
  internal_stream = (libmdmp_internal_stream_t *) stream;

  if( internal_stream->stream_descriptor == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_RUNTIME,
     LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,
     "%s: invalid stream - missing stream descriptor.",
     function );

    return( -1 );
  }
  if( libfdata_stream_get_size(
       internal_stream->stream_descriptor->data_stream,
       size,
       error ) != 1 )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_RUNTIME,
     LIBCERROR_RUNTIME_ERROR_GET_FAILED,
     "%s: unable to retrieve stream data stream size.",
     function );

    return( -1 );
  }
  return( 1 );
}

/* Retrieves the start offset
 * Returns 1 if successful or -1 on error
 */
int libmdmp_stream_get_start_offset(
     libmdmp_stream_t *stream,
     off64_t *start_offset,
     libcerror_error_t **error )
{
  libmdmp_internal_stream_t *internal_stream = NULL;
  static char *function                      = "libmdmp_stream_get_start_offset";
  size64_t segment_size                      = 0;
  uint32_t segment_flags                     = 0;
  int segment_file_index                     = 0;

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

    return( -1 );
  }
  internal_stream = (libmdmp_internal_stream_t *) stream;

  if( internal_stream->stream_descriptor == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_RUNTIME,
     LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,
     "%s: invalid internal stream - missing stream descriptor.",
     function );

    return( -1 );
  }
  if( libfdata_stream_get_segment_by_index(
       internal_stream->stream_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 stream data stream segment: 0.",
     function );

    return( -1 );
  }
  return( 1 );
}

/* Retrieves the stream data file IO handle
 * Returns 1 if successful -1 on error
 */
int libmdmp_stream_get_data_file_io_handle(
     libmdmp_stream_t *stream,
     libbfio_handle_t **file_io_handle,
     libcerror_error_t **error )
{
  libmdmp_stream_io_handle_t *io_handle = NULL;
  static char *function                 = "libmdmp_stream_get_data_file_io_handle";

  if( libmdmp_stream_io_handle_initialize(
       &io_handle,
       stream,
       error ) != 1 )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_RUNTIME,
     LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED,
     "%s: unable to create stream file IO handle.",
     function );

    goto on_error;
  }
  if( libbfio_handle_initialize(
       file_io_handle,
       (intptr_t *) io_handle,
       (int (*)(intptr_t **, libcerror_error_t **)) libmdmp_stream_io_handle_free,
       (int (*)(intptr_t **, intptr_t *, libcerror_error_t **)) libmdmp_stream_io_handle_clone,
       (int (*)(intptr_t *, int flags, libcerror_error_t **)) libmdmp_stream_io_handle_open,
       (int (*)(intptr_t *, libcerror_error_t **)) libmdmp_stream_io_handle_close,
       (ssize_t (*)(intptr_t *, uint8_t *, size_t, libcerror_error_t **)) libmdmp_stream_io_handle_read,
       (ssize_t (*)(intptr_t *, const uint8_t *, size_t, libcerror_error_t **)) libmdmp_stream_io_handle_write,
       (off64_t (*)(intptr_t *, off64_t, int, libcerror_error_t **)) libmdmp_stream_io_handle_seek_offset,
       (int (*)(intptr_t *, libcerror_error_t **)) libmdmp_stream_io_handle_exists,
       (int (*)(intptr_t *, libcerror_error_t **)) libmdmp_stream_io_handle_is_open,
       (int (*)(intptr_t *, size64_t *, libcerror_error_t **)) libmdmp_stream_io_handle_get_size,
       LIBBFIO_FLAG_IO_HANDLE_MANAGED | LIBBFIO_FLAG_IO_HANDLE_CLONE_BY_FUNCTION,
       error ) != 1 )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_RUNTIME,
     LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED,
     "%s: unable to create file IO handle.",
     function );

    goto on_error;
  }
  return( 1 );

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


Coverage Report

Created: 2025-08-28 07:10

Line	Count	Source (jump to first uncovered line)
1		/*
2		* Section functions
3		*
4		* Copyright (C) 2014-2024, 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 <memory.h>
24		#include <types.h>
25
26		#include "libmdmp_definitions.h"
27		#include "libmdmp_io_handle.h"
28		#include "libmdmp_libbfio.h"
29		#include "libmdmp_libcerror.h"
30		#include "libmdmp_libfdata.h"
31		#include "libmdmp_libuna.h"
32		#include "libmdmp_stream.h"
33		#include "libmdmp_stream_io_handle.h"
34
35		/* Creates a stream
36		* Make sure the value stream is referencing, is set to NULL
37		* Returns 1 if successful or -1 on error
38		*/
39		int libmdmp_stream_initialize(
40		libmdmp_stream_t **stream,
41		libmdmp_io_handle_t *io_handle,
42		libbfio_handle_t *file_io_handle,
43		libmdmp_stream_descriptor_t *stream_descriptor,
44		libcerror_error_t **error )
45	0	{
46	0	libmdmp_internal_stream_t *internal_stream = NULL;
47	0	static char *function = "libmdmp_stream_initialize";
48
49	0	if( stream == NULL )
50	0	{
51	0	libcerror_error_set(
52	0	error,
53	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
54	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
55	0	"%s: invalid stream.",
56	0	function );
57
58	0	return( -1 );
59	0	}
60	0	if( *stream != NULL )
61	0	{
62	0	libcerror_error_set(
63	0	error,
64	0	LIBCERROR_ERROR_DOMAIN_RUNTIME,
65	0	LIBCERROR_RUNTIME_ERROR_VALUE_ALREADY_SET,
66	0	"%s: invalid stream value already set.",
67	0	function );
68
69	0	return( -1 );
70	0	}
71	0	if( stream_descriptor == NULL )
72	0	{
73	0	libcerror_error_set(
74	0	error,
75	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
76	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
77	0	"%s: invalid stream descriptor.",
78	0	function );
79
80	0	return( -1 );
81	0	}
82	0	internal_stream = memory_allocate_structure(
83	0	libmdmp_internal_stream_t );
84
85	0	if( internal_stream == NULL )
86	0	{
87	0	libcerror_error_set(
88	0	error,
89	0	LIBCERROR_ERROR_DOMAIN_RUNTIME,
90	0	LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED,
91	0	"%s: unable to create internal stream.",
92	0	function );
93
94	0	goto on_error;
95	0	}
96	0	if( memory_set(
97	0	internal_stream,
98	0	0,
99	0	sizeof( libmdmp_internal_stream_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 internal stream.",
106	0	function );
107
108	0	memory_free(
109	0	internal_stream );
110
111	0	return( -1 );
112	0	}
113	0	internal_stream->file_io_handle = file_io_handle;
114	0	internal_stream->io_handle = io_handle;
115	0	internal_stream->stream_descriptor = stream_descriptor;
116
117	0	stream = (libmdmp_stream_t ) internal_stream;
118
119	0	return( 1 );
120
121	0	on_error:
122	0	if( internal_stream != NULL )
123	0	{
124	0	memory_free(
125	0	internal_stream );
126	0	}
127	0	return( -1 );
128	0	}
129
130		/* Frees a stream
131		* Returns 1 if successful or -1 on error
132		*/
133		int libmdmp_stream_free(
134		libmdmp_stream_t **stream,
135		libcerror_error_t **error )
136	0	{
137	0	libmdmp_internal_stream_t *internal_stream = NULL;
138	0	static char *function = "libmdmp_stream_free";
139
140	0	if( stream == NULL )
141	0	{
142	0	libcerror_error_set(
143	0	error,
144	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
145	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
146	0	"%s: invalid stream.",
147	0	function );
148
149	0	return( -1 );
150	0	}
151	0	if( *stream != NULL )
152	0	{
153	0	internal_stream = (libmdmp_internal_stream_t ) stream;
154	0	*stream = NULL;
155
156		/* The file_io_handle, io_handle and stream_descriptor references are freed elsewhere
157		*/
158	0	memory_free(
159	0	internal_stream );
160	0	}
161	0	return( 1 );
162	0	}
163
164		/* Retrieves the type
165		* Returns 1 if successful or -1 on error
166		*/
167		int libmdmp_stream_get_type(
168		libmdmp_stream_t *stream,
169		uint32_t *type,
170		libcerror_error_t **error )
171	0	{
172	0	libmdmp_internal_stream_t *internal_stream = NULL;
173	0	static char *function = "libmdmp_stream_get_type";
174
175	0	if( stream == NULL )
176	0	{
177	0	libcerror_error_set(
178	0	error,
179	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
180	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
181	0	"%s: invalid stream.",
182	0	function );
183
184	0	return( -1 );
185	0	}
186	0	internal_stream = (libmdmp_internal_stream_t *) stream;
187
188	0	if( internal_stream->stream_descriptor == NULL )
189	0	{
190	0	libcerror_error_set(
191	0	error,
192	0	LIBCERROR_ERROR_DOMAIN_RUNTIME,
193	0	LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,
194	0	"%s: invalid internal stream - missing stream descriptor.",
195	0	function );
196
197	0	return( -1 );
198	0	}
199	0	if( type == NULL )
200	0	{
201	0	libcerror_error_set(
202	0	error,
203	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
204	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
205	0	"%s: invalid type.",
206	0	function );
207
208	0	return( -1 );
209	0	}
210	0	*type = internal_stream->stream_descriptor->type;
211
212	0	return( 1 );
213	0	}
214
215		/* Reads data at the current offset into a buffer
216		* Returns the number of bytes read or -1 on error
217		*/
218		ssize_t libmdmp_stream_read_buffer(
219		libmdmp_stream_t *stream,
220		void *buffer,
221		size_t buffer_size,
222		libcerror_error_t **error )
223	0	{
224	0	libmdmp_internal_stream_t *internal_stream = NULL;
225	0	static char *function = "libmdmp_stream_read_buffer";
226	0	ssize_t read_count = 0;
227
228	0	if( stream == NULL )
229	0	{
230	0	libcerror_error_set(
231	0	error,
232	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
233	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
234	0	"%s: invalid stream.",
235	0	function );
236
237	0	return( -1 );
238	0	}
239	0	internal_stream = (libmdmp_internal_stream_t *) stream;
240
241	0	if( internal_stream->stream_descriptor == NULL )
242	0	{
243	0	libcerror_error_set(
244	0	error,
245	0	LIBCERROR_ERROR_DOMAIN_RUNTIME,
246	0	LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,
247	0	"%s: invalid stream - missing stream descriptor.",
248	0	function );
249
250	0	return( -1 );
251	0	}
252	0	read_count = libfdata_stream_read_buffer(
253	0	internal_stream->stream_descriptor->data_stream,
254	0	(intptr_t *) internal_stream->file_io_handle,
255	0	buffer,
256	0	buffer_size,
257	0	0,
258	0	error );
259
260	0	if( read_count == -1 )
261	0	{
262	0	libcerror_error_set(
263	0	error,
264	0	LIBCERROR_ERROR_DOMAIN_IO,
265	0	LIBCERROR_IO_ERROR_READ_FAILED,
266	0	"%s: unable to read buffer from stream data stream.",
267	0	function );
268
269	0	return( -1 );
270	0	}
271	0	return( read_count );
272	0	}
273
274		/* Reads data at a specific offset into a buffer
275		* Returns the number of bytes read or -1 on error
276		*/
277		ssize_t libmdmp_stream_read_buffer_at_offset(
278		libmdmp_stream_t *stream,
279		void *buffer,
280		size_t buffer_size,
281		off64_t offset,
282		libcerror_error_t **error )
283	0	{
284	0	static char *function = "libmdmp_stream_read_buffer_at_offset";
285	0	ssize_t read_count = 0;
286
287	0	if( libmdmp_stream_seek_offset(
288	0	stream,
289	0	offset,
290	0	SEEK_SET,
291	0	error ) == -1 )
292	0	{
293	0	libcerror_error_set(
294	0	error,
295	0	LIBCERROR_ERROR_DOMAIN_IO,
296	0	LIBCERROR_IO_ERROR_SEEK_FAILED,
297	0	"%s: unable to seek offset.",
298	0	function );
299
300	0	return( -1 );
301	0	}
302	0	read_count = libmdmp_stream_read_buffer(
303	0	stream,
304	0	buffer,
305	0	buffer_size,
306	0	error );
307
308	0	if( read_count < 0 )
309	0	{
310	0	libcerror_error_set(
311	0	error,
312	0	LIBCERROR_ERROR_DOMAIN_IO,
313	0	LIBCERROR_IO_ERROR_READ_FAILED,
314	0	"%s: unable to read buffer.",
315	0	function );
316
317	0	return( -1 );
318	0	}
319	0	return( read_count );
320	0	}
321
322		/* Seeks a certain offset of the data
323		* Returns the offset if seek is successful or -1 on error
324		*/
325		off64_t libmdmp_stream_seek_offset(
326		libmdmp_stream_t *stream,
327		off64_t offset,
328		int whence,
329		libcerror_error_t **error )
330	0	{
331	0	libmdmp_internal_stream_t *internal_stream = NULL;
332	0	static char *function = "libmdmp_stream_seek_offset";
333
334	0	if( stream == NULL )
335	0	{
336	0	libcerror_error_set(
337	0	error,
338	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
339	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
340	0	"%s: invalid stream.",
341	0	function );
342
343	0	return( -1 );
344	0	}
345	0	internal_stream = (libmdmp_internal_stream_t *) stream;
346
347	0	if( internal_stream->stream_descriptor == NULL )
348	0	{
349	0	libcerror_error_set(
350	0	error,
351	0	LIBCERROR_ERROR_DOMAIN_RUNTIME,
352	0	LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,
353	0	"%s: invalid stream - missing stream descriptor.",
354	0	function );
355
356	0	return( -1 );
357	0	}
358	0	offset = libfdata_stream_seek_offset(
359	0	internal_stream->stream_descriptor->data_stream,
360	0	offset,
361	0	whence,
362	0	error );
363
364	0	if( offset == -1 )
365	0	{
366	0	libcerror_error_set(
367	0	error,
368	0	LIBCERROR_ERROR_DOMAIN_IO,
369	0	LIBCERROR_IO_ERROR_SEEK_FAILED,
370	0	"%s: unable to seek in stream data stream.",
371	0	function );
372
373	0	return( -1 );
374	0	}
375	0	return( offset );
376	0	}
377
378		/* Retrieves the (current) offset
379		* Returns 1 if successful or -1 on error
380		*/
381		int libmdmp_stream_get_offset(
382		libmdmp_stream_t *stream,
383		off64_t *offset,
384		libcerror_error_t **error )
385	0	{
386	0	libmdmp_internal_stream_t *internal_stream = NULL;
387	0	static char *function = "libmdmp_stream_get_offset";
388
389	0	if( stream == NULL )
390	0	{
391	0	libcerror_error_set(
392	0	error,
393	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
394	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
395	0	"%s: invalid stream.",
396	0	function );
397
398	0	return( -1 );
399	0	}
400	0	internal_stream = (libmdmp_internal_stream_t *) stream;
401
402	0	if( internal_stream->stream_descriptor == NULL )
403	0	{
404	0	libcerror_error_set(
405	0	error,
406	0	LIBCERROR_ERROR_DOMAIN_RUNTIME,
407	0	LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,
408	0	"%s: invalid stream - missing stream descriptor.",
409	0	function );
410
411	0	return( -1 );
412	0	}
413	0	if( libfdata_stream_get_offset(
414	0	internal_stream->stream_descriptor->data_stream,
415	0	offset,
416	0	error ) != 1 )
417	0	{
418	0	libcerror_error_set(
419	0	error,
420	0	LIBCERROR_ERROR_DOMAIN_RUNTIME,
421	0	LIBCERROR_RUNTIME_ERROR_GET_FAILED,
422	0	"%s: unable to retrieve stream data stream offset.",
423	0	function );
424
425	0	return( -1 );
426	0	}
427	0	return( 1 );
428	0	}
429
430		/* Retrieves the size
431		* Returns 1 if successful or -1 on error
432		*/
433		int libmdmp_stream_get_size(
434		libmdmp_stream_t *stream,
435		size64_t *size,
436		libcerror_error_t **error )
437	0	{
438	0	libmdmp_internal_stream_t *internal_stream = NULL;
439	0	static char *function = "libmdmp_stream_get_size";
440
441	0	if( stream == NULL )
442	0	{
443	0	libcerror_error_set(
444	0	error,
445	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
446	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
447	0	"%s: invalid stream.",
448	0	function );
449
450	0	return( -1 );
451	0	}
452	0	internal_stream = (libmdmp_internal_stream_t *) stream;
453
454	0	if( internal_stream->stream_descriptor == NULL )
455	0	{
456	0	libcerror_error_set(
457	0	error,
458	0	LIBCERROR_ERROR_DOMAIN_RUNTIME,
459	0	LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,
460	0	"%s: invalid stream - missing stream descriptor.",
461	0	function );
462
463	0	return( -1 );
464	0	}
465	0	if( libfdata_stream_get_size(
466	0	internal_stream->stream_descriptor->data_stream,
467	0	size,
468	0	error ) != 1 )
469	0	{
470	0	libcerror_error_set(
471	0	error,
472	0	LIBCERROR_ERROR_DOMAIN_RUNTIME,
473	0	LIBCERROR_RUNTIME_ERROR_GET_FAILED,
474	0	"%s: unable to retrieve stream data stream size.",
475	0	function );
476
477	0	return( -1 );
478	0	}
479	0	return( 1 );
480	0	}
481
482		/* Retrieves the start offset
483		* Returns 1 if successful or -1 on error
484		*/
485		int libmdmp_stream_get_start_offset(
486		libmdmp_stream_t *stream,
487		off64_t *start_offset,
488		libcerror_error_t **error )
489	0	{
490	0	libmdmp_internal_stream_t *internal_stream = NULL;
491	0	static char *function = "libmdmp_stream_get_start_offset";
492	0	size64_t segment_size = 0;
493	0	uint32_t segment_flags = 0;
494	0	int segment_file_index = 0;
495
496	0	if( stream == NULL )
497	0	{
498	0	libcerror_error_set(
499	0	error,
500	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
501	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
502	0	"%s: invalid stream.",
503	0	function );
504
505	0	return( -1 );
506	0	}
507	0	internal_stream = (libmdmp_internal_stream_t *) stream;
508
509	0	if( internal_stream->stream_descriptor == NULL )
510	0	{
511	0	libcerror_error_set(
512	0	error,
513	0	LIBCERROR_ERROR_DOMAIN_RUNTIME,
514	0	LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,
515	0	"%s: invalid internal stream - missing stream descriptor.",
516	0	function );
517
518	0	return( -1 );
519	0	}
520	0	if( libfdata_stream_get_segment_by_index(
521	0	internal_stream->stream_descriptor->data_stream,
522	0	0,
523	0	&segment_file_index,
524	0	start_offset,
525	0	&segment_size,
526	0	&segment_flags,
527	0	error ) != 1 )
528	0	{
529	0	libcerror_error_set(
530	0	error,
531	0	LIBCERROR_ERROR_DOMAIN_RUNTIME,
532	0	LIBCERROR_RUNTIME_ERROR_GET_FAILED,
533	0	"%s: unable to retrieve stream data stream segment: 0.",
534	0	function );
535
536	0	return( -1 );
537	0	}
538	0	return( 1 );
539	0	}
540
541		/* Retrieves the stream data file IO handle
542		* Returns 1 if successful -1 on error
543		*/
544		int libmdmp_stream_get_data_file_io_handle(
545		libmdmp_stream_t *stream,
546		libbfio_handle_t **file_io_handle,
547		libcerror_error_t **error )
548	0	{
549	0	libmdmp_stream_io_handle_t *io_handle = NULL;
550	0	static char *function = "libmdmp_stream_get_data_file_io_handle";
551
552	0	if( libmdmp_stream_io_handle_initialize(
553	0	&io_handle,
554	0	stream,
555	0	error ) != 1 )
556	0	{
557	0	libcerror_error_set(
558	0	error,
559	0	LIBCERROR_ERROR_DOMAIN_RUNTIME,
560	0	LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED,
561	0	"%s: unable to create stream file IO handle.",
562	0	function );
563
564	0	goto on_error;
565	0	}
566	0	if( libbfio_handle_initialize(
567	0	file_io_handle,
568	0	(intptr_t *) io_handle,
569	0	(int ()(intptr_t , libcerror_error_t *)) libmdmp_stream_io_handle_free,
570	0	(int ()(intptr_t , intptr_t , libcerror_error_t **)) libmdmp_stream_io_handle_clone,
571	0	(int ()(intptr_t , int flags, libcerror_error_t **)) libmdmp_stream_io_handle_open,
572	0	(int ()(intptr_t , libcerror_error_t **)) libmdmp_stream_io_handle_close,
573	0	(ssize_t ()(intptr_t , uint8_t , size_t, libcerror_error_t *)) libmdmp_stream_io_handle_read,
574	0	(ssize_t ()(intptr_t , const uint8_t , size_t, libcerror_error_t *)) libmdmp_stream_io_handle_write,
575	0	(off64_t ()(intptr_t , off64_t, int, libcerror_error_t **)) libmdmp_stream_io_handle_seek_offset,
576	0	(int ()(intptr_t , libcerror_error_t **)) libmdmp_stream_io_handle_exists,
577	0	(int ()(intptr_t , libcerror_error_t **)) libmdmp_stream_io_handle_is_open,
578	0	(int ()(intptr_t , size64_t , libcerror_error_t *)) libmdmp_stream_io_handle_get_size,
579	0	LIBBFIO_FLAG_IO_HANDLE_MANAGED \| LIBBFIO_FLAG_IO_HANDLE_CLONE_BY_FUNCTION,
580	0	error ) != 1 )
581	0	{
582	0	libcerror_error_set(
583	0	error,
584	0	LIBCERROR_ERROR_DOMAIN_RUNTIME,
585	0	LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED,
586	0	"%s: unable to create file IO handle.",
587	0	function );
588
589	0	goto on_error;
590	0	}
591	0	return( 1 );
592
593	0	on_error:
594	0	if( io_handle != NULL )
595	0	{
596	0	libmdmp_stream_io_handle_free(
597	0	&io_handle,
598	0	NULL );
599	0	}
600	0	return( -1 );
601	0	}
602