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|
/*
* Message table values functions
*
* Copyright (C) 2011-2016, Joachim Metz <joachim.metz@gmail.com>
*
* Refer to AUTHORS for acknowledgements.
*
* This software 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 software 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 software. If not, see <http://www.gnu.org/licenses/>.
*/
#include <common.h>
#include <memory.h>
#include <types.h>
#include "libwrc_data_descriptor.h"
#include "libwrc_definitions.h"
#include "libwrc_io_handle.h"
#include "libwrc_libbfio.h"
#include "libwrc_libcerror.h"
#include "libwrc_libcnotify.h"
#include "libwrc_libfvalue.h"
#include "libwrc_language_entry.h"
#include "libwrc_message_table_values.h"
#include "wrc_message_table_resource.h"
/* Reads message table values
* Returns 1 if successful or -1 on error
*/
int libwrc_message_table_values_read(
libwrc_language_entry_t *language_entry,
libwrc_io_handle_t *io_handle,
libbfio_handle_t *file_io_handle,
libwrc_data_descriptor_t *data_descriptor,
libcerror_error_t **error )
{
libfvalue_value_t *message_table_value = NULL;
uint8_t *resource_data = NULL;
uint8_t *message_table_resource_data = NULL;
uint8_t *message_table_string_resource_data = NULL;
static char *function = "libwrc_message_table_values_read";
off64_t file_offset = 0;
size_t message_entry_descriptors_size = 0;
size_t resource_data_size = 0;
ssize_t read_count = 0;
uint32_t first_message_identifier = 0;
uint32_t last_message_identifier = 0;
uint16_t message_entry_descriptor_index = 0;
uint16_t message_table_string_flags = 0;
uint32_t message_table_string_offset = 0;
uint16_t message_table_string_size = 0;
uint16_t number_of_message_entry_descriptors = 0;
uint16_t string_size = 0;
int result = 0;
int value_encoding = 0;
int value_index = 0;
if( language_entry == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid language entry.",
function );
return( -1 );
}
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( data_descriptor == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid data descriptor.",
function );
return( -1 );
}
file_offset = data_descriptor->virtual_address
- io_handle->virtual_address;
if( libbfio_handle_seek_offset(
file_io_handle,
file_offset,
SEEK_SET,
error ) == -1 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_IO,
LIBCERROR_IO_ERROR_SEEK_FAILED,
"%s: unable to seek resource data offset: %" PRIi64 ".",
function,
file_offset );
goto on_error;
}
resource_data_size = (size_t) data_descriptor->size;
resource_data = (uint8_t *) memory_allocate(
sizeof( uint8_t ) * resource_data_size );
if( resource_data == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_MEMORY,
LIBCERROR_MEMORY_ERROR_INSUFFICIENT,
"%s: unable to create resource data.",
function );
goto on_error;
}
read_count = libbfio_handle_read_buffer(
file_io_handle,
resource_data,
resource_data_size,
error );
if( read_count != (ssize_t) resource_data_size )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_IO,
LIBCERROR_IO_ERROR_READ_FAILED,
"%s: unable to read resource data.",
function );
goto on_error;
}
message_table_resource_data = resource_data;
#if defined( HAVE_DEBUG_OUTPUT )
if( libcnotify_verbose != 0 )
{
libcnotify_printf(
"%s: resource data:\n",
function );
libcnotify_print_data(
message_table_resource_data,
resource_data_size,
0 );
}
#endif
byte_stream_copy_to_uint32_little_endian(
message_table_resource_data,
number_of_message_entry_descriptors );
#if defined( HAVE_DEBUG_OUTPUT )
if( libcnotify_verbose != 0 )
{
libcnotify_printf(
"%s: number of message entry descriptors\t: %" PRIu32 "\n",
function,
number_of_message_entry_descriptors );
libcnotify_printf(
"\n" );
}
#endif
message_table_resource_data += sizeof( uint32_t );
resource_data_size -= sizeof( uint32_t );
message_entry_descriptors_size = number_of_message_entry_descriptors
* sizeof( wrc_message_table_entry_descriptor_t );
if( message_entry_descriptors_size > resource_data_size )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_VALUE_OUT_OF_BOUNDS,
"%s: number of message entry descriptors value out of bound.",
function );
goto on_error;
}
for( message_entry_descriptor_index = 0;
message_entry_descriptor_index < number_of_message_entry_descriptors;
message_entry_descriptor_index++ )
{
#if defined( HAVE_DEBUG_OUTPUT )
if( libcnotify_verbose != 0 )
{
libcnotify_printf(
"%s: message entry descriptor: %03d\n",
function,
message_entry_descriptor_index );
libcnotify_print_data(
message_table_resource_data,
sizeof( wrc_message_table_entry_descriptor_t ),
0 );
}
#endif
byte_stream_copy_to_uint32_little_endian(
( (wrc_message_table_entry_descriptor_t *) message_table_resource_data )->first_identifier,
first_message_identifier );
byte_stream_copy_to_uint32_little_endian(
( (wrc_message_table_entry_descriptor_t *) message_table_resource_data )->last_identifier,
last_message_identifier );
byte_stream_copy_to_uint32_little_endian(
( (wrc_message_table_entry_descriptor_t *) message_table_resource_data )->offset,
message_table_string_offset );
#if defined( HAVE_DEBUG_OUTPUT )
if( libcnotify_verbose != 0 )
{
libcnotify_printf(
"%s: first message identifier\t\t\t: 0x%08" PRIx32 "\n",
function,
first_message_identifier );
libcnotify_printf(
"%s: last message identifier\t\t\t: 0x%08" PRIx32 "\n",
function,
last_message_identifier );
libcnotify_printf(
"%s: first message string offset\t\t\t: 0x%08" PRIx32 "\n",
function,
message_table_string_offset );
libcnotify_printf(
"\n" );
}
#endif
message_table_resource_data += sizeof( wrc_message_table_entry_descriptor_t );
resource_data_size -= sizeof( wrc_message_table_entry_descriptor_t );
if( first_message_identifier > last_message_identifier )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_VALUE_OUT_OF_BOUNDS,
"%s: first message identifier exceeds last.",
function );
goto on_error;
}
while( first_message_identifier <= last_message_identifier )
{
if( message_table_string_offset >= (size_t) data_descriptor->size )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_VALUE_OUT_OF_BOUNDS,
"%s: number of message string offset value out of bound.",
function );
goto on_error;
}
message_table_string_resource_data = &( resource_data[ message_table_string_offset ] );
#if defined( HAVE_DEBUG_OUTPUT )
if( libcnotify_verbose != 0 )
{
libcnotify_printf(
"%s: message string: 0x%08" PRIx32 "\n",
function,
first_message_identifier );
libcnotify_print_data(
message_table_string_resource_data,
sizeof( wrc_message_table_string_t ),
0 );
}
#endif
byte_stream_copy_to_uint16_little_endian(
( (wrc_message_table_string_t *) message_table_string_resource_data )->size,
message_table_string_size );
byte_stream_copy_to_uint16_little_endian(
( (wrc_message_table_string_t *) message_table_string_resource_data )->flags,
message_table_string_flags );
#if defined( HAVE_DEBUG_OUTPUT )
if( libcnotify_verbose != 0 )
{
libcnotify_printf(
"%s: message string: 0x%08" PRIx32 " size\t\t: %" PRIu16 "\n",
function,
first_message_identifier,
message_table_string_size );
libcnotify_printf(
"%s: message string: 0x%08" PRIx32 " flags\t\t: 0x%04" PRIx16 "\n",
function,
first_message_identifier,
message_table_string_flags );
}
#endif
if( message_table_string_size > sizeof( wrc_message_table_string_t ) )
{
message_table_string_resource_data += sizeof( wrc_message_table_string_t );
message_table_string_offset += sizeof( wrc_message_table_string_t );
message_table_string_size -= sizeof( wrc_message_table_string_t );
if( ( message_table_string_flags & 0x0001 ) == 0 )
{
result = libfvalue_value_type_initialize(
&( message_table_value ),
LIBFVALUE_VALUE_TYPE_STRING_BYTE_STREAM,
error );
}
else
{
result = libfvalue_value_type_initialize(
&( message_table_value ),
LIBFVALUE_VALUE_TYPE_STRING_UTF16,
error );
}
if( result != 1 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED,
"%s: unable to create string value.",
function );
goto on_error;
}
if( libfvalue_value_set_identifier(
message_table_value,
(uint8_t *) &first_message_identifier,
4,
LIBFVALUE_VALUE_IDENTIFIER_FLAG_MANAGED,
error ) != 1 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED,
"%s: unable to set identifier of message table value.",
function );
goto on_error;
}
if( ( message_table_string_flags & 0x0001 ) == 0 )
{
value_encoding = io_handle->ascii_codepage;
}
else
{
value_encoding = LIBFVALUE_CODEPAGE_UTF16_LITTLE_ENDIAN;
}
/* TODO data bounds check */
#if defined( HAVE_DEBUG_OUTPUT )
if( libcnotify_verbose != 0 )
{
libcnotify_printf(
"%s: message string: 0x%08" PRIx32 " data:\n",
function,
first_message_identifier );
libcnotify_print_data(
message_table_string_resource_data,
(size_t) message_table_string_size,
0 );
}
#endif
/* Strip off trailing 0-byte values
*/
string_size = message_table_string_size;
if( ( message_table_string_flags & 0x0001 ) == 0 )
{
while( string_size > 0 )
{
string_size -= 1;
if( message_table_string_resource_data[ string_size ] != 0 )
{
break;
}
}
string_size += 1;
}
else
{
while( string_size > 1 )
{
string_size -= 2;
if( ( message_table_string_resource_data[ string_size ] != 0 )
|| ( message_table_string_resource_data[ string_size + 1 ] != 0 ) )
{
break;
}
}
string_size += 2;
}
if( libfvalue_value_set_data(
message_table_value,
message_table_string_resource_data,
(size_t) string_size,
value_encoding,
LIBFVALUE_VALUE_DATA_FLAG_MANAGED,
error ) != 1 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_SET_FAILED,
"%s: unable to set data of string value.",
function );
goto on_error;
}
#if defined( HAVE_DEBUG_OUTPUT )
if( libcnotify_verbose != 0 )
{
libcnotify_printf(
"%s: message string: 0x%08" PRIx32 " value\t\t: ",
function,
first_message_identifier );
if( libfvalue_value_print(
message_table_value,
0,
0,
error ) != 1 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_PRINT_FAILED,
"%s: unable to print string value.",
function );
goto on_error;
}
libcnotify_printf(
"\n" );
}
#endif
}
#if defined( HAVE_DEBUG_OUTPUT )
else if( libcnotify_verbose != 0 )
{
libcnotify_printf(
"\n" );
}
#endif
message_table_string_resource_data += message_table_string_size;
message_table_string_offset += message_table_string_size;
if( libwrc_language_entry_append_value(
language_entry,
&value_index,
(intptr_t *) message_table_value,
error ) != 1 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_APPEND_FAILED,
"%s: unable to append message table values.",
function );
goto on_error;
}
message_table_value = NULL;
first_message_identifier++;
}
}
memory_free(
resource_data );
return( 1 );
on_error:
if( message_table_value != NULL )
{
libfvalue_value_free(
&message_table_value,
NULL );
}
if( resource_data != NULL )
{
memory_free(
resource_data );
}
return( -1 );
}
|
