From fd3025598e6b252a41cfccdc024de9651ff3df2e Mon Sep 17 00:00:00 2001 From: Christophe Grenier Date: Fri, 23 Jul 2010 08:55:16 +0200 Subject: [PATCH] PhotoRec: recover Virtual desktop infrastructure 1.1 .vdi files --- src/Makefile.am | 1 + src/file_list.c | 2 + src/file_vdi.c | 106 ++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 109 insertions(+) create mode 100644 src/file_vdi.c diff --git a/src/Makefile.am b/src/Makefile.am index 68e6fc17..325722a3 100644 --- a/src/Makefile.am +++ b/src/Makefile.am @@ -213,6 +213,7 @@ file_C = filegen.c \ file_ttf.c \ file_txt.c \ file_tz.c \ + file_vdi.c \ file_veg.c \ file_vfb.c \ file_vmdk.c \ diff --git a/src/file_list.c b/src/file_list.c index 4f8e8563..9582c549 100644 --- a/src/file_list.c +++ b/src/file_list.c @@ -215,6 +215,7 @@ extern const file_hint_t file_hint_tph; extern const file_hint_t file_hint_ttf; extern const file_hint_t file_hint_txt; extern const file_hint_t file_hint_tz; +extern const file_hint_t file_hint_vdi; extern const file_hint_t file_hint_veg; extern const file_hint_t file_hint_vfb; extern const file_hint_t file_hint_vmdk; @@ -425,6 +426,7 @@ file_enable_t list_file_enable[]= { .enable=0, .file_hint=&file_hint_tz }, { .enable=0, .file_hint=&file_hint_vfb }, { .enable=0, .file_hint=&file_hint_vmdk }, + { .enable=0, .file_hint=&file_hint_vdi }, { .enable=0, .file_hint=&file_hint_veg }, { .enable=0, .file_hint=&file_hint_wdp }, { .enable=0, .file_hint=&file_hint_win }, diff --git a/src/file_vdi.c b/src/file_vdi.c new file mode 100644 index 00000000..06ad4213 --- /dev/null +++ b/src/file_vdi.c @@ -0,0 +1,106 @@ +/* + + File: file_vdi.c + + Copyright (C) 2010 Christophe GRENIER + + This software is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 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 General Public License along + with this program; if not, write the Free Software Foundation, Inc., 51 + Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + + */ + +#ifdef HAVE_CONFIG_H +#include +#endif +#ifdef HAVE_STRING_H +#include +#endif +#include +#include "types.h" +#include "filegen.h" +#include "common.h" + +static void register_header_check_vdi(file_stat_t *file_stat); +static int header_check_vdi(const unsigned char *buffer, const unsigned int buffer_size, const unsigned int safe_header_only, const file_recovery_t *file_recovery, file_recovery_t *file_recovery_new); + +const file_hint_t file_hint_vdi= { + .extension="vdi", + .description="Virtual desktop infrastructure 1.1", + .min_header_distance=0, + .max_filesize=PHOTOREC_MAX_FILE_SIZE, + .recover=1, + .enable_by_default=1, + .register_header_check=®ister_header_check_vdi +}; + +static const unsigned char vdi_header[4]= {0x7f, 0x10, 0xda, 0xbe}; + +static void register_header_check_vdi(file_stat_t *file_stat) +{ + register_header_check(0x40, vdi_header,sizeof(vdi_header), &header_check_vdi, file_stat); +} + +/* Image version. */ +#define VDI_VERSION_1_1 0x00010001 + +/* Image type. */ +#define VDI_TYPE_DYNAMIC 1 +#define VDI_TYPE_STATIC 2 + +typedef unsigned char uuid_t[16]; + +typedef struct { + char text[0x40]; + uint32_t signature; + uint32_t version; + uint32_t header_size; + uint32_t image_type; + uint32_t image_flags; + char description[256]; + uint32_t offset_bmap; + uint32_t offset_data; + uint32_t cylinders; /* disk geometry, unused here */ + uint32_t heads; /* disk geometry, unused here */ + uint32_t sectors; /* disk geometry, unused here */ + uint32_t sector_size; + uint32_t unused1; + uint64_t disk_size; + uint32_t block_size; + uint32_t block_extra; /* unused here */ + uint32_t blocks_in_image; + uint32_t blocks_allocated; + uuid_t uuid_image; + uuid_t uuid_last_snap; + uuid_t uuid_link; + uuid_t uuid_parent; + uint64_t unused2[7]; +} VdiHeader; + +static int header_check_vdi(const unsigned char *buffer, const unsigned int buffer_size, const unsigned int safe_header_only, const file_recovery_t *file_recovery, file_recovery_t *file_recovery_new) +{ + const VdiHeader *header=(const VdiHeader *)buffer; + if(memcmp(&buffer[0x40], vdi_header, sizeof(vdi_header))==0 && le32(header->version) == VDI_VERSION_1_1) + { + reset_file_recovery(file_recovery_new); + file_recovery_new->extension=file_hint_vdi.extension; + if(le32(header->image_type) == VDI_TYPE_STATIC) + { + file_recovery_new->calculated_file_size=(uint64_t) le32(header->offset_data) + le32(header->blocks_in_image) * le32(header->block_size); + file_recovery_new->data_check=&data_check_size; + file_recovery_new->file_check=&file_check_size; + } + return 1; + } + return 0; +}