public static MBFileRecord[] ReadMBDB(string BackupPath, bool dump, bool checks)
{
try
{
MBFileRecord[] files;
MBFileRecord rec = new MBFileRecord();
byte[] signature = new byte[6]; // buffer signature
byte[] buf = new byte[26]; // buffer for .mbdx record
StringBuilder sb = new StringBuilder(40); // stringbuilder for the Key
byte[] data = new byte[40]; // buffer for the fixed part of .mbdb record
System.DateTime unixEpoch = new System.DateTime(1970, 1, 1, 0, 0, 0, 0, DateTimeKind.Utc);
// open the index
FileStream mbdx = new FileStream(Path.Combine(BackupPath, "Manifest.mbdx"), FileMode.Open, FileAccess.Read);
// skip signature
mbdx.Read(signature, 0, 6);
if (BitConverter.ToString(signature, 0) != "6D-62-64-78-02-00") // "mbdx\2\0"
{
throw new Exception("bad .mbdx file");
}
// open the database
FileStream mbdb = new FileStream(Path.Combine(BackupPath, "Manifest.mbdb"), FileMode.Open, FileAccess.Read);
// skip signature
mbdb.Read(signature, 0, 6);
if (BitConverter.ToString(signature, 0) != "6D-62-64-62-05-00") // "mbdb\5\0"
{
throw new Exception("bad .mbdb file");
}
// number of records in .mbdx
if (mbdx.Read(buf, 0, 4) != 4)
{
throw new Exception("altered .mbdx file");
}
int records = BigEndianBitConverter.ToInt32(buf, 0);
files = new MBFileRecord[records];
// loop through the records
for (int i = 0; i < records; ++i)
{
// get the fixed size .mbdx record
if (mbdx.Read(buf, 0, 26) != 26)
{
break;
}
// convert key to text, it's the filename in the backup directory
// in previous versions of iTunes, it was the file part of .mddata/.mdinfo
sb.Clear();
for (int j = 0; j < 20; ++j)
{
byte b = buf[j];
sb.Append(toHexLow(b >> 4));
sb.Append(toHexLow(b & 15));
}
rec.key = sb.ToString();
rec.offset = BigEndianBitConverter.ToInt32(buf, 20);
rec.Mode = BigEndianBitConverter.ToUInt16(buf, 24);
// read the record in the .mbdb
mbdb.Seek(6 + rec.offset, SeekOrigin.Begin);
rec.Domain = getS(mbdb);
rec.Path = getS(mbdb);
rec.LinkTarget = getS(mbdb);
rec.DataHash = getD(mbdb);
rec.alwaysNA = getD(mbdb);
mbdb.Read(data, 0, 40);
rec.data = toHex(data, 2, 4, 4, 4, 4, 4, 4, 4, 8, 1, 1);
//rec.ModeBis = BigEndianBitConverter.ToUInt16(data, 0);
rec.alwaysZero = BigEndianBitConverter.ToInt32(data, 2);
rec.unknown = BigEndianBitConverter.ToInt32(data, 6);
rec.UserId = BigEndianBitConverter.ToInt32(data, 10); // or maybe GroupId (don't care...)
rec.GroupId = BigEndianBitConverter.ToInt32(data, 14); // or maybe UserId
rec.aTime = unixEpoch.AddSeconds(BigEndianBitConverter.ToUInt32(data, 18));
rec.bTime = unixEpoch.AddSeconds(BigEndianBitConverter.ToUInt32(data, 22));
rec.cTime = unixEpoch.AddSeconds(BigEndianBitConverter.ToUInt32(data, 26));
rec.FileLength = BigEndianBitConverter.ToInt64(data, 30);
rec.flag = data[38];
rec.PropertyCount = data[39];
rec.Properties = new MBFileRecord.Property[rec.PropertyCount];
for (int j = 0; j < rec.PropertyCount; ++j)
{
rec.Properties[j].Name = getS(mbdb);
rec.Properties[j].Value = getD(mbdb);
}
files[i] = rec;
// debug print
if (dump)
{
Console.WriteLine("");
Console.WriteLine("record {0} (mbdb offset {1})", i, rec.offset + 6);
Console.WriteLine(" key {0}", rec.key);
Console.WriteLine(" domain {0}", rec.Domain);
Console.WriteLine(" path {0}", rec.Path);
if (rec.LinkTarget != "n/a")
{
Console.WriteLine(" target {0}", rec.LinkTarget);
}
if (rec.DataHash != "n/a")
{
Console.WriteLine(" hash {0}", rec.DataHash);
}
if (rec.alwaysNA != "n/a")
{
Console.WriteLine(" unk3 {0}", rec.alwaysNA);
}
string l = "?";
switch ((rec.Mode & 0xF000) >> 12)
{
case 0xA: l = "link"; break;
case 0x4: l = "dir"; break;
case 0x8: l = "file"; break;
}
Console.WriteLine(" mode {1} ({0})", rec.Mode & 0xFFF, l);
Console.WriteLine(" time {0}", rec.aTime);
// length is unsignificant if link or dir
if ((rec.Mode & 0xF000) == 0x8000)
{
Console.WriteLine(" length {0}", rec.FileLength);
}
Console.WriteLine(" data {0}", rec.data);
for (int j = 0; j < rec.PropertyCount; ++j)
{
Console.WriteLine(" pn[{0}] {1}", j, rec.Properties[j].Name);
Console.WriteLine(" pv[{0}] {1}", j, rec.Properties[j].Value);
}
}
// some assertions...
if (checks)
{
//Debug.Assert(rec.Mode == rec.ModeBis);
Debug.Assert(rec.alwaysZero == 0);
if (rec.LinkTarget != "n/a")
{
Debug.Assert((rec.Mode & 0xF000) == 0xA000);
}
if (rec.DataHash != "n/a")
{
Debug.Assert(rec.DataHash.Length == 40);
}
Debug.Assert(rec.alwaysNA == "n/a");
if (rec.Domain.StartsWith("AppDomain-"))
{
Debug.Assert(rec.GroupId == 501 && rec.UserId == 501);
}
if (rec.FileLength != 0)
{
Debug.Assert((rec.Mode & 0xF000) == 0x8000);
}
if ((rec.Mode & 0xF000) == 0x8000)
{
Debug.Assert(rec.flag != 0);
}
if ((rec.Mode & 0xF000) == 0xA000)
{
Debug.Assert(rec.flag == 0 && rec.FileLength == 0);
}
if ((rec.Mode & 0xF000) == 0x4000)
{
Debug.Assert(rec.flag == 0 && rec.FileLength == 0);
}
}
}
return(files);
}
catch (Exception e)
{
Console.WriteLine("exception: {0}", e.Message);
}
return(null);
}
public static List <MBFileRecord> ReadMBDB(string BackupPath)
{
try
{
List <MBFileRecord> files;
byte[] signature = new byte[6]; // buffer signature
byte[] buf = new byte[26]; // buffer for .mbdx record
StringBuilder sb = new StringBuilder(40); // stringbuilder for the Key
byte[] data = new byte[40]; // buffer for the fixed part of .mbdb record
SHA1CryptoServiceProvider hasher = new SHA1CryptoServiceProvider();
System.DateTime unixEpoch = new System.DateTime(1970, 1, 1, 0, 0, 0, 0, DateTimeKind.Utc);
// open the database
FileStream mbdb = new FileStream(Path.Combine(BackupPath, "Manifest.mbdb"), FileMode.Open, FileAccess.Read);
// skip signature
mbdb.Read(signature, 0, 6);
if (BitConverter.ToString(signature, 0) != "6D-62-64-62-05-00") // "mbdb\5\0"
{
throw new Exception("bad .mbdb file");
}
files = new List <MBFileRecord>();
// loop through the records
for (int i = 0; mbdb.Position < mbdb.Length; ++i)
{
MBFileRecord rec = new MBFileRecord();
rec.Domain = getS(mbdb);
rec.Path = getS(mbdb);
rec.LinkTarget = getS(mbdb);
rec.DataHash = getD(mbdb);
rec.alwaysNull = getD(mbdb);
mbdb.Read(data, 0, 40);
rec.data = toHex(data, 2, 4, 4, 4, 4, 4, 4, 4, 8, 1, 1);
rec.Mode = BigEndianBitConverter.ToUInt16(data, 0);
rec.alwaysZero = BigEndianBitConverter.ToInt32(data, 2);
rec.inode = BigEndianBitConverter.ToUInt32(data, 6);
rec.UserId = BigEndianBitConverter.ToUInt32(data, 10); // or maybe GroupId (don't care...)
rec.GroupId = BigEndianBitConverter.ToUInt32(data, 14); // or maybe UserId
rec.aTime = unixEpoch.AddSeconds(BigEndianBitConverter.ToUInt32(data, 18));
rec.bTime = unixEpoch.AddSeconds(BigEndianBitConverter.ToUInt32(data, 22));
rec.cTime = unixEpoch.AddSeconds(BigEndianBitConverter.ToUInt32(data, 26));
rec.FileLength = BigEndianBitConverter.ToInt64(data, 30);
rec.flag = data[38];
rec.PropertyCount = data[39];
rec.Properties = new MBFileRecord.Property[rec.PropertyCount];
for (int j = 0; j < rec.PropertyCount; ++j)
{
rec.Properties[j].Name = getS(mbdb);
rec.Properties[j].Value = getD(mbdb);
}
StringBuilder fileName = new StringBuilder();
byte[] fb = hasher.ComputeHash(ASCIIEncoding.UTF8.GetBytes(rec.Domain + "-" + rec.Path));
for (int k = 0; k < fb.Length; k++)
{
fileName.Append(fb[k].ToString("x2"));
}
rec.key = fileName.ToString();
files.Add(rec);
}
return(files);
}
catch (Exception e)
{
Console.WriteLine("exception: {0}", e.Message);
}
return(null);
}
