public static List <CSB> get_deleted_csb_list(FileStream fs, UInt64 last_csb_address)
{
List <CSB> csb_list = new List <CSB>();
UInt64 next_csb_addr = last_csb_address + 2 * CSB.BlockSize;
while (true)
{
// Console.WriteLine("next_csb_addr : {0}", next_csb_addr);
CSB csb = init_csb(fs, next_csb_addr);
if (csb == null)
{
break;
}
//Console.WriteLine("------deleted csb Address : {0}", csb.CSB_Address);
//Console.WriteLine("checkpoint : {0}", csb.CSB_Checkpoint);
//Console.WriteLine(" OldestCSBD : {0}", csb.OldestCSBD);
//Console.WriteLine(" OriginalCSBD : {0}", csb.OriginalCSBD);
//Console.WriteLine(" NextCSBD : {0}", csb.NextCSBD);
//Console.WriteLine(" magic : {0}\n", new String(csb.CSB_Magic));
csb_list.Add(csb);
next_csb_addr = csb.CSB_Address + 2 * CSB.BlockSize;
}
return(csb_list);
}
public static CSB init_first_csb(FileStream fs)
{
CSB csb = new CSB();
csb.CSB_Address = Utility.get_string_address(fs, 0, "NXSB") - 32;
csb = init_csb(fs, csb.CSB_Address);
return(csb);
}
public static List <CSB> get_csb_list(FileStream fs)
{
List <CSB> csb_list = new List <CSB>();
CSB first_csb = CSB.init_first_csb(fs);
CSB.first_csb_address = first_csb.CSB_Address;
UInt64 next_csb_addr = Utility.get_address(first_csb.OldestCSBD) + CSB.BlockSize;
Console.WriteLine("=======first csb Address : {0}", first_csb.CSB_Address);
Console.WriteLine("checkpoint : {0}", first_csb.CSB_Checkpoint);
Console.WriteLine(" OldestCSBD : {0}", first_csb.OldestCSBD);
Console.WriteLine(" OriginalCSBD : {0}", first_csb.OriginalCSBD);
Console.WriteLine(" NextCSBD : {0}", first_csb.NextCSBD);
while (true)
{
//Console.WriteLine("next_csb_addr : {0}", next_csb_addr);
CSB csb = init_csb(fs, next_csb_addr);
if (csb == null)
{
break;
}
/*
* Console.WriteLine("=======csb Address : {0}", csb.CSB_Address);
*
* Console.WriteLine("checkpoint : {0}", csb.CSB_Checkpoint);
* Console.WriteLine(" OldestCSBD : {0}", csb.OldestCSBD);
* Console.WriteLine(" OriginalCSBD : {0}", csb.OriginalCSBD);
* Console.WriteLine(" NextCSBD : {0}", csb.NextCSBD);
*/
csb_list.Add(csb);
next_csb_addr = Utility.get_address(csb.NextCSBD) + CSB.BlockSize;
if (csb.OriginalCSBD == first_csb.OriginalCSBD)
{
break;
}
}
Console.WriteLine("fin init get csb list");
return(csb_list);
}
public static CSB init_csb(FileStream fs, UInt64 block_addr)
{
CSB csb = new CSB();
int n;
string hex;
byte[] buf = new byte[64];
fs.Seek((Int64)block_addr + Convert.ToInt64("0x00", 16), SeekOrigin.Begin);
n = fs.Read(buf, 0, 8);
hex = BitConverter.ToString(buf).Replace("-", String.Empty);
csb.BlockChecksum = Utility.little_hex_to_uint64(hex, n);
n = fs.Read(buf, 0, 8);
hex = BitConverter.ToString(buf).Replace("-", String.Empty);
csb.BlockID = Utility.little_hex_to_uint64(hex, n);
n = fs.Read(buf, 0, 8);
hex = BitConverter.ToString(buf).Replace("-", String.Empty);
csb.CSB_Checkpoint = Utility.little_hex_to_uint64(hex, n);
fs.Seek((Int64)block_addr + Convert.ToInt64("0x20", 16), SeekOrigin.Begin);
n = fs.Read(buf, 0, 4);
hex = BitConverter.ToString(buf).Replace("-", String.Empty);
csb.CSB_Magic = Utility.hex_to_charArray(hex.Substring(0, 8));
n = fs.Read(buf, 0, 4);
//hex = BitConverter.ToString(buf).Replace("-", String.Empty);
//CSB.BlockSize = (UInt32)Utility.little_hex_to_uint64(hex, n);
n = fs.Read(buf, 0, 8);
hex = BitConverter.ToString(buf).Replace("-", String.Empty);
csb.TotalBlocks = Utility.little_hex_to_uint64(hex, n);
fs.Seek((Int64)block_addr + Convert.ToInt64("0x60", 16), SeekOrigin.Begin);
n = fs.Read(buf, 0, 8);
hex = BitConverter.ToString(buf).Replace("-", String.Empty);
csb.NextCSB_ID = Utility.little_hex_to_uint64(hex, n);
fs.Seek((Int64)block_addr + Convert.ToInt64("0x70", 16), SeekOrigin.Begin);
n = fs.Read(buf, 0, 4);
hex = BitConverter.ToString(buf).Replace("-", String.Empty);
csb.BaseBlock = (UInt32)Utility.little_hex_to_uint64(hex, n);
fs.Seek((Int64)block_addr + Convert.ToInt64("0x80", 16), SeekOrigin.Begin);
n = fs.Read(buf, 0, 4);
hex = BitConverter.ToString(buf).Replace("-", String.Empty);
csb.NextCSBD = (UInt32)Utility.little_hex_to_uint64(hex, n) + csb.BaseBlock;
fs.Seek((Int64)block_addr + Convert.ToInt64("0x88", 16), SeekOrigin.Begin);
n = fs.Read(buf, 0, 4);
hex = BitConverter.ToString(buf).Replace("-", String.Empty);
csb.OriginalCSBD = (UInt32)Utility.little_hex_to_uint64(hex, n) + csb.BaseBlock;
n = fs.Read(buf, 0, 4);
hex = BitConverter.ToString(buf).Replace("-", String.Empty);
csb.OldestCSBD = (UInt32)Utility.little_hex_to_uint64(hex, n) - 1;
fs.Seek((Int64)block_addr + Convert.ToInt64("0xA0", 16), SeekOrigin.Begin);
n = fs.Read(buf, 0, 8);
hex = BitConverter.ToString(buf).Replace("-", String.Empty);
csb.VolumesIndexblock = Utility.little_hex_to_uint64(hex, n);
fs.Seek((Int64)block_addr + Convert.ToInt64("0xB4", 16), SeekOrigin.Begin);
n = fs.Read(buf, 0, 4);
hex = BitConverter.ToString(buf).Replace("-", String.Empty);
csb.VolumesMaxNumber = (UInt32)Utility.little_hex_to_uint64(hex, n);
n = fs.Read(buf, 0, 8);
hex = BitConverter.ToString(buf).Replace("-", String.Empty);
csb.VolumeID_List = Utility.little_hex_to_uint64(hex, n);
csb.CSB_Address = block_addr;
//Console.WriteLine("BlockChecksum :{0}", csb.BlockChecksum);
//Console.WriteLine("BlockID :{0}", csb.BlockID);
//Console.WriteLine("CSB_Checkpoint :{0}", csb.CSB_Checkpoint);
//Console.WriteLine("CSB_Address :{0}", csb.CSB_Address);
//Console.WriteLine("BlockSize :{0} ", CSB.BlockSize);
////string s = new string(csb.CSB_Magic);
////Console.WriteLine("-->MAGIC : {0}", s);
//Console.WriteLine("TotalBlocks :{0}", csb.TotalBlocks);
//Console.WriteLine("NextCSB_ID :{0}", csb.NextCSB_ID);
//Console.WriteLine("BaseBlock :{0}", csb.BaseBlock);
//Console.WriteLine("NextCSBD :{0}", csb.NextCSBD);
//Console.WriteLine("OriginalCSBD :{0} ", csb.OriginalCSBD);
//Console.WriteLine("OldestCSBD :{0} ", csb.OldestCSBD);
//Console.WriteLine("VolumesIndexblock :{0}", csb.VolumesIndexblock);
//Console.WriteLine("VolumesMaxNumber :{0} ", csb.VolumesMaxNumber);
//Console.WriteLine("VolumeID_List :{0} ", csb.VolumeID_List);
String magic = new string(csb.CSB_Magic, 0, csb.CSB_Magic.Length);
if (magic.Equals("NXSB"))
{
return(csb);
}
return(null);
}
public static bool init_APFS(FileStream fs, CSB csb)
{
Console.WriteLine("*************** Make File Structure at Checkpoint : {0} *************", csb.CSB_Checkpoint);
RECORD.parent_node_dic.Clear();
RECORD.parent_node_dic = new Dictionary <UInt64, List <UInt64> >();
RECORD.ffr_dict.Clear();
RECORD.ffr_dict = new Dictionary <UInt64, FileFolderRecord>();
RECORD.er_dic.Clear();
RECORD.er_dic = new Dictionary <UInt64, ExtentRecord>();
////volume structure
UInt64 VRB_addr = csb.VolumesIndexblock;
Console.WriteLine();
Console.WriteLine("VRB address : {0} {1}", VRB_addr, Utility.get_address(VRB_addr));
UInt64 VB_addr = Table.get_block_address(fs, VRB_addr, "0x30");
Console.WriteLine("VB address : {0}", VB_addr);
Console.WriteLine("first csb address : {0}, blocksize : {1}, totalLength : {2}", CSB.first_csb_address, CSB.BlockSize, CSB.TotalSize);
Table VB_h;
VB_h = Table.get_table_header(fs, VB_addr);
if (VB_h == null)
{
throw new Exception("This csb is invalid.");
}
//VB record
Console.WriteLine();
TableType[] VBrecords = Table.save_record(fs, VB_addr, VB_h);
//VCSB
for (int i = 0; i < VB_h.record_num; i++)
{
Console.WriteLine();
UInt64 VCSB_addr;
VCSB_addr = VBrecords[i].BlockNum;
Console.WriteLine("VCSB_addr : {0}", VCSB_addr);
//각 VCSB
Console.WriteLine();
VCSB vcsb = VCSB.init_vcsb(fs, VCSB_addr);
//BTCS
Console.WriteLine();
UInt64 BTCS_addr = vcsb.BTCS;
Console.WriteLine("BTCS address : {0}", BTCS_addr);
UInt64 BTOM_addr = Table.get_block_address(fs, BTCS_addr, "0x30");
Console.WriteLine("BTOM address : {0}", BTOM_addr);
int n = 0;
List <BTCS> btrn_btln = BTCS.init_btom(fs, BTOM_addr);
foreach (BTCS b in btrn_btln)
{
n++;
Console.WriteLine("btrn_btln : {0} ", n);
Console.WriteLine("node id : {0}", b.NodeID);
Console.WriteLine("Checkpoint : {0}", b.Checkpoint);
Console.WriteLine("block num: {0}, {1}\n", b.BlockNum, Utility.get_address(b.BlockNum));
if (n > 1)
{
RECORD.init_btln(fs, b.BlockNum);
}
}
// Queue 만들기
Queue <UInt64> q = new Queue <UInt64>();
q.Enqueue(2); // NodeID of root node
ulong root = 2;
if (!RECORD.parent_node_dic.ContainsKey(root))
{
return(true);
}
RECORD.ffr_dict[root].path = @restore_to_path;
while (q.Count > 0)
{
UInt64 parent_node_id = q.Dequeue();
String parent_path = RECORD.ffr_dict[parent_node_id].path;
Console.WriteLine("ParentID = {0}", parent_node_id);
if (!RECORD.parent_node_dic.ContainsKey(parent_node_id))
{
continue;
}
foreach (UInt64 child_node_Id in RECORD.parent_node_dic[parent_node_id])
{
String fname = new string(RECORD.ffr_dict[child_node_Id].FileName, 0, RECORD.ffr_dict[child_node_Id].FileName.Length - 1);
String new_path = Path.Combine(parent_path, fname);
RECORD.ffr_dict[child_node_Id].path = new_path;
Console.WriteLine(" NodeID = {0}, path : {1}", child_node_Id, new_path);
if (RECORD.ffr_dict[child_node_Id].Flag[0] == '8')
{
if (RECORD.er_dic.ContainsKey(child_node_Id))
{
Extent new_extent = Extent.read_extent(fs, (long)Utility.get_address(RECORD.er_dic[child_node_Id].ExtentStartBlockNum), (long)RECORD.er_dic[child_node_Id].ExtentLength);
Extent.write_extent(child_node_Id, new_extent.buf, new_extent.Count, new_path);
}
else
{
if (!File.Exists(new_path))
{
File.Create(new_path);
}
}
}
else if (RECORD.ffr_dict[child_node_Id].Flag[0] == '4')
{
q.Enqueue(child_node_Id);
Directory.CreateDirectory(new_path);
}
}
}
Console.WriteLine();
}
Console.WriteLine("FIN");
return(true);
}
public static bool restore_folder(FileStream fs, CSB csb, string search_name)
{
RECORD.parent_node_dic.Clear();
RECORD.parent_node_dic = new Dictionary <UInt64, List <UInt64> >();
RECORD.ffr_dict.Clear();
RECORD.ffr_dict = new Dictionary <UInt64, FileFolderRecord>();
RECORD.er_dic.Clear();
RECORD.er_dic = new Dictionary <UInt64, ExtentRecord>();
bool restore = false;
////volume structure
UInt64 VRB_addr = csb.VolumesIndexblock;
UInt64 VB_addr = Table.get_block_address(fs, VRB_addr, "0x30");
Table VB_h = Table.get_table_header(fs, VB_addr);
if (VB_h == null)
{
throw new Exception("This csb is invalid.\n Cannot restore folder");
}
//VB record
Console.WriteLine();
TableType[] VBrecords = Table.save_record(fs, VB_addr, VB_h);
//VCSB
for (int i = 0; i < VB_h.record_num; i++)
{
Console.WriteLine();
UInt64 VCSB_addr;
VCSB_addr = VBrecords[i].BlockNum;
//각 VCSB
Console.WriteLine();
VCSB vcsb = VCSB.init_vcsb(fs, VCSB_addr);
//BTCS
Console.WriteLine();
UInt64 BTCS_addr = vcsb.BTCS;
UInt64 BTOM_addr = Table.get_block_address(fs, BTCS_addr, "0x30");
int n = 0;
List <BTCS> btrn_btln = BTCS.init_btom(fs, BTOM_addr);
foreach (BTCS b in btrn_btln)
{
n++;
if (n > 1)
{
RECORD.init_btln(fs, b.BlockNum);
}
}
// Queue 만들기
Queue <UInt64> q = new Queue <UInt64>();
q.Enqueue(2); // NodeID of root node
ulong root = 2;
if (!RECORD.parent_node_dic.ContainsKey(root))
{
return(false);
}
RECORD.ffr_dict[root].path = @restore_to_path;
restore = false;
while (q.Count > 0)
{
UInt64 parent_node_id = q.Dequeue();
String parent_path = RECORD.ffr_dict[parent_node_id].path;
Console.WriteLine("ParentID = {0}", parent_node_id);
if (!RECORD.parent_node_dic.ContainsKey(parent_node_id))
{
continue;
}
foreach (UInt64 child_node_Id in RECORD.parent_node_dic[parent_node_id])
{
String fname = new string(RECORD.ffr_dict[child_node_Id].FileName, 0, RECORD.ffr_dict[child_node_Id].FileName.Length - 1);
if (restore)
{
RECORD.ffr_dict[child_node_Id].path = Path.Combine(parent_path, fname);
}
else
{
RECORD.ffr_dict[child_node_Id].path = parent_path;
}
Console.WriteLine(" NodeID = {0}, {1}", child_node_Id, fname);
String new_path = RECORD.ffr_dict[child_node_Id].path;
if (restore && RECORD.ffr_dict[child_node_Id].Flag[0] == '8')
{
if (RECORD.er_dic.ContainsKey(child_node_Id))
{
Extent new_extent = Extent.read_extent(fs, (long)Utility.get_address(RECORD.er_dic[child_node_Id].ExtentStartBlockNum), (long)RECORD.er_dic[child_node_Id].ExtentLength);
Extent.write_extent(child_node_Id, new_extent.buf, new_extent.Count, new_path);
}
else if (!File.Exists(new_path))
{
File.Create(new_path);
}
}
if (RECORD.ffr_dict[child_node_Id].Flag[0] == '4')
{
if (!restore)
{
if (fname.Equals(search_name))
{
Console.WriteLine("---------Find Folder-------");
RECORD.ffr_dict[child_node_Id].path = Path.Combine(RECORD.ffr_dict[child_node_Id].path, fname);
Directory.CreateDirectory(RECORD.ffr_dict[child_node_Id].path);
q.Clear();
q.Enqueue(child_node_Id);
restore = true;
break;
}
else
{
q.Enqueue(child_node_Id);
}
}
else
{
Directory.CreateDirectory(new_path);
q.Enqueue(child_node_Id);
}
}
}
}
Console.WriteLine();
}
Console.WriteLine("FIN");
return(restore);
}
static void Main()
{
Console.WriteLine("Enter the absolute path of the dmg file : ");
dmgPath = Console.ReadLine();
Console.WriteLine("Enter an absolute path to save the file system. : ");
restore_to_path = Console.ReadLine();
try
{
using (FileStream fs = new FileStream(@dmgPath, FileMode.Open))
{
bool make_csb = false;
List <CSB> csb_list = new List <CSB>();
List <CSB> deleted_csb_list = new List <CSB>();
CSB msb = new CSB();
while (true)
{
String input = "";
Console.WriteLine("-----------------------------------------------------");
Console.WriteLine(" 1. Restore Filesystem Structure");
Console.WriteLine(" 2. TimeMachine");
Console.WriteLine(" 3. Restore Deleted Folder");
Console.WriteLine(" 4. Restore Deleted File");
Console.WriteLine(" 5. quit");
Console.WriteLine("-----------------------------------------------------");
input = Console.ReadLine();
if (!make_csb)
{
CSB.TotalSize = (UInt64)fs.Length;
CSB.BlockSize = (UInt32)4096;
csb_list = CSB.get_csb_list(fs);
deleted_csb_list = CSB.get_deleted_csb_list(fs, Utility.get_address(csb_list[csb_list.Count - 1].NextCSBD) + CSB.BlockSize);
csb_list.Sort((a, b) => a.CSB_Checkpoint.CompareTo(b.CSB_Checkpoint));
msb = csb_list[csb_list.Count - 1];
foreach (CSB csb in csb_list)
{
Console.WriteLine("*************Chckpoint : {0} \n address : {1}", csb.CSB_Checkpoint, csb.CSB_Address);
Console.WriteLine("checkpoint : {0}", csb.CSB_Checkpoint);
Console.WriteLine(" OldestCSBD : {0}", csb.OldestCSBD);
Console.WriteLine(" OriginalCSBD : {0}", csb.OriginalCSBD);
Console.WriteLine(" NextCSBD : {0}", csb.NextCSBD);
}
foreach (CSB csb in deleted_csb_list)
{
Console.WriteLine("--------------deleted Chckpoint : {0}\n address : {1}", csb.CSB_Checkpoint, csb.CSB_Address);
Console.WriteLine("checkpoint : {0}", csb.CSB_Checkpoint);
Console.WriteLine(" OldestCSBD : {0}", csb.OldestCSBD);
Console.WriteLine(" OriginalCSBD : {0}", csb.OriginalCSBD);
Console.WriteLine(" NextCSBD : {0}", csb.NextCSBD);
}
Console.WriteLine("-------------------");
Console.WriteLine("msb checkpoint : {0}", msb.CSB_Checkpoint);
make_csb = true;
}
try
{
if (input.Equals("1"))
{
try
{
init_APFS(fs, msb);
}
catch (Exception e)
{
Console.WriteLine("This APFS Cannot Recover... :");
Console.WriteLine(e);
return;
}
}
else if (input.Equals("2"))
{
int chk, idx;
Console.WriteLine("\n\nPlease select the checkpoint you want to go back to.");
Console.WriteLine("(The larger the checkpoint, the more recent checkpoint.)");
Console.Write("Checkpoint : ");
for (int i = 0; i < csb_list.Count; i++)
{
Console.Write("{0} ", csb_list[i].CSB_Checkpoint);
}
Console.Write("\n Deleted Checkpoint : ");
for (int i = 0; i < deleted_csb_list.Count; i++)
{
Console.Write("{0} ", deleted_csb_list[i].CSB_Checkpoint);
}
Console.WriteLine("");
string s_chk = Console.ReadLine();
chk = Convert.ToInt32(s_chk);
if (chk >= (int)csb_list[0].CSB_Checkpoint && chk <= (int)msb.CSB_Checkpoint)
{
idx = chk - (int)msb.CSB_Checkpoint + csb_list.Count - 1;
init_APFS(fs, csb_list[idx]);
}
else if (chk >= (int)deleted_csb_list[0].CSB_Checkpoint && chk <= (int)deleted_csb_list[deleted_csb_list.Count - 1].CSB_Checkpoint)
{
idx = chk - (int)deleted_csb_list[deleted_csb_list.Count - 1].CSB_Checkpoint + deleted_csb_list.Count - 1;
init_APFS(fs, deleted_csb_list[idx]);
}
else
{
Console.WriteLine("Invalid Checkpoint Number");
}
}
else if (input.Equals("3"))
{
bool find = false;
String to_search = "";
Console.WriteLine("Enter the name of the Folder you want to restore : ");
to_search = Console.ReadLine();
for (int i = csb_list.Count - 1; i >= 0; i--)
{
CSB c = csb_list[i];
Console.WriteLine("=========Chckpoint : {0}", c.CSB_Checkpoint);
if (restore_folder(fs, c, to_search))
{
find = true;
break;
}
}
if (!find)
{
for (int i = deleted_csb_list.Count - 1; i >= 0; i--)
{
Console.WriteLine("=========deleted Chckpoint : {0}", deleted_csb_list[i].CSB_Checkpoint);
if (restore_folder(fs, deleted_csb_list[i], to_search))
{
find = true;
break;
}
}
}
}
else if (input.Equals("4"))
{
bool find = false;
String to_search = "";
Console.WriteLine("Enter the name of the file you want to restore : ");
to_search = Console.ReadLine();
for (int i = csb_list.Count - 1; i >= 0; i--)
{
Console.WriteLine("=========Chckpoint : {0}", csb_list[i].CSB_Checkpoint);
if (restore_file(fs, csb_list[i], to_search))
{
find = true;
break;
}
}
if (!find)
{
for (int i = deleted_csb_list.Count - 1; i >= 0; i--)
{
Console.WriteLine("=========Chckpoint : {0}", deleted_csb_list[i].CSB_Checkpoint);
if (restore_file(fs, deleted_csb_list[i], to_search))
{
find = true;
break;
}
}
}
}
else if (input.Equals("5"))
{
return;
}
else
{
Console.WriteLine("Invalid Input");
}
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
}
}
}
catch (UnauthorizedAccessException)
{
Console.WriteLine("Cannot Access dmg file");
return;
}
catch (FileNotFoundException)
{
Console.WriteLine("Cannot Find File...");
}
}
