/*
* EwfSize
*/
static int EwfSize(void *p_handle, uint64_t *p_size) {
pts_EwfHandle p_ewf_handle=(pts_EwfHandle)p_handle;
#ifdef HAVE_LIBEWF_V2_API
if(libewf_handle_get_media_size(p_ewf_handle->h_ewf,p_size,NULL)!=1) {
#else
if(libewf_get_media_size(p_ewf_handle->h_ewf,p_size)!=1) {
#endif
return EWF_GET_SIZE_FAILED;
}
return EWF_OK;
}
/*
* EwfRead
*/
static int EwfRead(void *p_handle,
char *p_buf,
off_t offset,
size_t count,
size_t *p_read,
int *p_errno)
{
pts_EwfHandle p_ewf_handle=(pts_EwfHandle)p_handle;
// TODO: Return value of libewf_handle_read_buffer is ssize_t with -1 on error
size_t bytes_read;
#ifdef HAVE_LIBEWF_V2_API
if(libewf_handle_seek_offset(p_ewf_handle->h_ewf,
offset,
SEEK_SET,
NULL)!=-1)
#else
if(libewf_seek_offset(p_ewf_handle->h_ewf,offset)!=-1)
#endif
{
#ifdef HAVE_LIBEWF_V2_API
bytes_read=libewf_handle_read_buffer(p_ewf_handle->h_ewf,
p_buf,
count,
NULL);
#else
bytes_read=libewf_read_buffer(p_ewf_handle->h_ewf,p_buf,count);
#endif
if(bytes_read!=count) return EWF_READ_FAILED;
} else {
return EWF_SEEK_FAILED;
}
*p_read=bytes_read;
return EWF_OK;
}
/* Reads media data from an offset into a buffer
* This function swaps byte pairs if specified
* Returns the amount of bytes read, or -1 on error
*/
ssize_t libewf_read_random( LIBEWF_HANDLE *handle, void *buffer, size_t size, off_t offset )
{
ssize_t read_count = 0;
if( libewf_seek_offset( handle, offset ) == -1 )
{
LIBEWF_WARNING_PRINT( "libewf_read_random: unable to seek offset.\n" );
return( -1 );
}
read_count = libewf_read_buffer( handle, buffer, size );
if( read_count <= -1 )
{
LIBEWF_WARNING_PRINT( "libewf_read_random: unable to read buffer.\n" );
return( -1 );
}
return( read_count );
}
ssize_t ewf_read(int fd, void *buf, size_t count)
{
return libewf_read_buffer(ewf_h, buf, count);
}
static int ewf__read(RIO *io, RIODesc *fd, ut8 *buf, int count) {
return libewf_read_buffer (RIOEWF_HANDLE (fd), buf, count);
}
