public static ContentNode Parse(ContentCodeBag bag, byte [] buffer, string root,
ref int offset)
{
ContentNode node = new ContentNode();
int num = IPAddress.NetworkToHostOrder(BitConverter.ToInt32(buffer, offset));
ContentCode code;
// This is a fix for iPhoto '08 which gives wrong content-type for dpap.databasecontainers (aply)
if (num == 1634757753)
{
code = new ContentCode();
code.Name = "dpap.databasecontainers";
code.Type = ContentType.Container;
}
else
{
code = bag.Lookup(num);
}
if (code.Name.Equals("dpap.filedata"))
{
code.Type = ContentType.FileData;
}
if (code.Equals(ContentCode.Zero))
{
// probably a buggy server. fallback to our internal code bag
Console.WriteLine("fallback to internal code bag");
Console.WriteLine("Code number: " + num);
throw new Exception("Content code not found!");
}
int length = IPAddress.NetworkToHostOrder(BitConverter.ToInt32(buffer, offset + 4));
if (code.Equals(ContentCode.Zero))
{
throw new ContentException(String.Format("Failed to find content code for '{0}'. Data length is {1}",
ContentCodeBag.GetStringFormat(num), length));
}
node.Name = code.Name;
Console.WriteLine("name = " + node.Name + "Code=" + code.Type.ToString() + " num=" + num);
switch (code.Type)
{
case ContentType.Char:
node.Value = (byte)buffer [offset + 8];
break;
case ContentType.Short:
node.Value = IPAddress.NetworkToHostOrder(BitConverter.ToInt16(buffer, offset + 8));
break;
case ContentType.SignedLong:
case ContentType.Long:
node.Value = IPAddress.NetworkToHostOrder(BitConverter.ToInt32(buffer, offset + 8));
break;
case ContentType.LongLong:
node.Value = IPAddress.NetworkToHostOrder(BitConverter.ToInt64(buffer, offset + 8));
break;
case ContentType.String:
node.Value = Encoding.UTF8.GetString(buffer, offset + 8, length);
break;
case ContentType.Date:
node.Value = Utility.ToDateTime(IPAddress.NetworkToHostOrder(BitConverter.ToInt32(buffer, offset + 8)));
break;
case ContentType.Version:
int major = IPAddress.NetworkToHostOrder(BitConverter.ToInt16(buffer, offset + 8));
int minor = (int)buffer [offset + 10];
int micro = (int)buffer [offset + 11];
node.Value = new Version(major, minor, micro);
break;
case ContentType.Container:
node.Value = ParseChildren(bag, buffer, offset + 8, length);
break;
case ContentType.FileData:
node.Value = offset + 8;
break;
default:
throw new ContentException(String.Format("Unknown content type '{0}' for '{1}'",
code.Type, code.Name));
}
offset += length + 8;
if (root != null)
{
ContentNode root_node = node.GetChild(root);
if (root_node == null)
{
throw new ContentException(String.Format("Could not find root node '{0}'", root));
}
return(root_node);
}
else
{
return(node);
}
}
private static void Write(ContentCodeBag bag, ContentNode node, BinaryWriter writer)
{
ContentCode code = bag.Lookup(node.Name);
if (code.Equals(ContentCode.Zero))
{
throw new ContentException("Failed to get content code for: " + node.Name);
}
writer.Write(IPAddress.HostToNetworkOrder(code.Number));
switch (code.Type)
{
case ContentType.Char:
writer.Write(IPAddress.HostToNetworkOrder(1));
writer.Write((byte)node.Value);
break;
case ContentType.Short:
writer.Write(IPAddress.HostToNetworkOrder(2));
writer.Write(IPAddress.HostToNetworkOrder((short)node.Value));
break;
case ContentType.SignedLong:
case ContentType.Long:
writer.Write(IPAddress.HostToNetworkOrder(4));
writer.Write(IPAddress.HostToNetworkOrder((int)node.Value));
break;
case ContentType.LongLong:
writer.Write(IPAddress.HostToNetworkOrder(8));
writer.Write(IPAddress.HostToNetworkOrder((long)node.Value));
break;
case ContentType.String:
byte [] data = Encoding.UTF8.GetBytes((string)node.Value);
writer.Write(IPAddress.HostToNetworkOrder(data.Length));
writer.Write(data);
break;
case ContentType.Date:
writer.Write(IPAddress.HostToNetworkOrder(4));
writer.Write(IPAddress.HostToNetworkOrder(Utility.FromDateTime((DateTime)node.Value)));
break;
case ContentType.Version:
Version version = (Version)node.Value;
writer.Write(IPAddress.HostToNetworkOrder(4));
writer.Write((short)IPAddress.HostToNetworkOrder((short)version.Major));
writer.Write((byte)version.Minor);
writer.Write((byte)version.Build);
break;
case ContentType.FileData:
// after "pfdt" we should send the file size and then immediately the file's contents
// DEBUG
//Console.WriteLine ("ContentWriter FileData!");
ContentNode [] nodes = (ContentNode [])node.Value;
//Console.WriteLine (nodes [0].Value);
writer.Write(IPAddress.HostToNetworkOrder((int)nodes [0].Value));
FileInfo info = new FileInfo((string)nodes [1].Value);
//Console.WriteLine ("reading file " + nodes [1].Value + ", length=" +info.Length);
FileStream stream = info.Open(FileMode.Open, FileAccess.Read, FileShare.Read);
int offset = -1;
using (BinaryReader reader = new BinaryReader(stream)) {
if (offset > 0)
{
reader.BaseStream.Seek(offset, SeekOrigin.Begin);
}
long count = 0;
long len = info.Length;
while (count < len)
{
byte [] buf = reader.ReadBytes(Math.Min(8192, (int)len - (int)count));
if (buf.Length == 0)
{
break;
}
writer.Write(buf);
count += buf.Length;
}
}
break;
case ContentType.Container:
MemoryStream child_stream = new MemoryStream();
BinaryWriter child_writer = new BinaryWriter(child_stream);
foreach (ContentNode child in (ContentNode [])node.Value)
{
Write(bag, child, child_writer);
}
child_writer.Flush();
byte [] bytes = child_stream.GetBuffer();
int len = (int)child_stream.Length;
writer.Write(IPAddress.HostToNetworkOrder(len));
writer.Write(bytes, 0, len);
child_writer.Close();
break;
default:
Console.Error.WriteLine("Cannot write node of type: " + code.Type);
break;
}
}