private rpcPacker ProgMismatchReply(uint xid)
{
rpcPacker reply = NewAcceptReply(xid, 2);
reply.setUint32(prog); // rpc_msg.reply_body.accepted_reply.mismatch_info.low
reply.setUint32(prog); // rpc_msg.reply_body.accepted_reply.mismatch_info.high
return(reply);
}
private void GetPort(rpcCracker cracker, rpcPacker packer)
{
const uint IPPROTO_UDP = 17;
uint prog = cracker.get_uint32();
uint vers = cracker.get_uint32();
uint prot = cracker.get_uint32();
uint port = cracker.get_uint32();
Console.WriteLine("prog:{0}, vers:{1}, prot:{2}, port:{3}", prog, vers, prot, port);
uint registeredPort = 0;
if (prot == IPPROTO_UDP)
{
if (prog == (uint)Progs.mountd && vers == (uint)Vers.mountd)
{
registeredPort = (uint)Ports.mountd;
}
else if (prog == (uint)Progs.nfsd && vers == (uint)Vers.nfsd)
{
registeredPort = (uint)Ports.nfsd;
}
}
packer.setUint32(registeredPort);
}
public void Pack(rpcPacker packer)
{
packer.setUint32(index);
// Pad
packer.setUint32(0);
packer.setUint32(0);
packer.setUint32(0);
packer.setUint32(0);
packer.setUint32(0);
packer.setUint32(0);
packer.setUint32(0);
}
private rpcPacker RPCMismatchReply(uint xid)
{
rpcPacker reply = new rpcPacker();
reply.setUint32(xid);
reply.setUint32(1); // rpc_msg.REPLY
reply.setUint32(1); // rpc_msg.reply_body.MSG_DENIED
reply.setUint32(0); // rpc_msg.reply_body.rejected_reply.RPC_MISMATCH
reply.setUint32(2); // rpc_msg.reply_body.rejected_reply.mismatch_info.low
reply.setUint32(2); // rpc_msg.reply_body.rejected_reply.mismatch_info.low
return(reply);
}
private rpcPacker NewAcceptReply(uint xid, uint acceptStatus)
{
rpcPacker reply = new rpcPacker();
reply.setUint32(xid);
reply.setUint32(1); // rpc_msg.REPLY
reply.setUint32(0); // rpc_msg.reply_body.MSG_ACCEPTED
reply.setUint32(0); // rpc_msg.reply_body.accepted_reply.opaque_auth.NULL
reply.setUint32(0); // rpc_msg.reply_body.accepted_reply.opaque_auth.<datsize>
// rpc_msg.reply_body.accepted_reply.<case>
reply.setUint32(acceptStatus);
return(reply);
}
private void ReadLink(rpcCracker cracker, rpcPacker packer)
{
fhandle fh = new fhandle(cracker);
FileStream fs;
try
{
fs = new FileStream(FileTable.LookupFileEntry(fh).Name, FileMode.Open, FileAccess.Read);
}
catch (System.IO.FileNotFoundException)
{
FileTable.Remove(fh);
throw;
}
try
{
Byte[] buf = new Byte[MAXPATHLEN];
int bytesRead = fs.Read(buf, 0, MAXPATHLEN);
packer.setUint32((uint)NFSStatus.NFS_OK);
packer.setData(buf, buf.Length);
}
finally
{
fs.Close();
}
}
private void Read(rpcCracker cracker, rpcPacker packer)
{
fhandle fh = new fhandle(cracker);
uint offset = cracker.get_uint32();
uint count = cracker.get_uint32();
uint totalCount = cracker.get_uint32();
FileStream fs;
try
{
fs = new FileStream(FileTable.LookupFileEntry(fh).Name, FileMode.Open, FileAccess.Read);
}
catch (System.IO.FileNotFoundException)
{
FileTable.Remove(fh);
throw;
}
try
{
fs.Position = offset;
Byte[] buf = new Byte[count];
int bytesRead = fs.Read(buf, 0, (int)count);
fattr attr = new fattr(fh);
if (attr.IsFile() == false) throw new NFSStatusException(NFSStatus.NFSERR_ISDIR);
packer.setUint32((uint)NFSStatus.NFS_OK);
attr.Pack(packer);
packer.setData(buf, bytesRead);
}
finally
{
fs.Close();
}
}
private rpcPacker RPCMismatchReply(uint xid)
{
rpcPacker reply = new rpcPacker();
reply.setUint32(xid);
reply.setUint32(1); // rpc_msg.REPLY
reply.setUint32(1); // rpc_msg.reply_body.MSG_DENIED
reply.setUint32(0); // rpc_msg.reply_body.rejected_reply.RPC_MISMATCH
reply.setUint32(2); // rpc_msg.reply_body.rejected_reply.mismatch_info.low
reply.setUint32(2); // rpc_msg.reply_body.rejected_reply.mismatch_info.low
return reply;
}
public void Pack(rpcPacker packer)
{
packer.setUint32((uint)type);
packer.setUint32(mode);
packer.setUint32(nlink);
packer.setUint32(uid);
packer.setUint32(gid);
packer.setUint32(size);
packer.setUint32(blocksize);
packer.setUint32(rdev);
packer.setUint32(blocks);
packer.setUint32(fsid);
packer.setUint32(fileid);
atime.Pack(packer);
mtime.Pack(packer);
mtime.Pack(packer);
}
protected override void Proc(uint proc, rpcCracker cracker, rpcPacker packer)
{
try
{
switch(proc)
{
case 1:
GetAttr(cracker, packer);
break;
case 2:
SetAttr(cracker, packer);
break;
case 3:
// Root(). No-op.
break;
case 4:
Lookup(cracker, packer);
break;
case 5:
ReadLink(cracker, packer);
break;
case 6:
Read(cracker, packer);
break;
case 8:
Write(cracker, packer);
break;
case 9:
Create(cracker, packer);
break;
case 10:
Remove(cracker, packer);
break;
case 11:
Rename(cracker, packer);
break;
case 13:
SymLink(cracker, packer);
break;
case 14:
MkDir(cracker, packer);
break;
case 15:
RmDir(cracker, packer);
break;
case 16:
ReadDir(cracker, packer);
break;
case 17:
StatFS(cracker, packer);
break;
default:
throw new BadProc();
}
}
catch(BadProc)
{
throw;
}
catch(NFSStatusException e)
{
packer.setUint32((uint)e.Status);
}
catch (System.IO.FileNotFoundException)
{
packer.setUint32((uint)NFSStatus.NFSERR_NOENT);
}
catch(UnauthorizedAccessException)
{
packer.setUint32((uint)NFSStatus.NFSERR_PERM);
}
catch(PathTooLongException)
{
packer.setUint32((uint)NFSStatus.NFSERR_NAMETOOLONG);
}
catch(DirectoryNotFoundException)
{
packer.setUint32((uint)NFSStatus.NFSERR_NOTDIR);
}
catch(Exception e)
{
Console.WriteLine("nfsd error:{0}", e);
packer.setUint32((uint)NFSStatus.NFSERR_IO);
}
}
private void RmDir(rpcCracker cracker, rpcPacker packer)
{
diropargs args = new diropargs(cracker);
String removePath = FileTable.LookupFileEntry(args.DirHandle).Name + @"\" + args.FileName;
Console.WriteLine(@"RmDir: {0}", removePath);
fhandle fh = FileTable.LookupFileHandle(removePath);
try
{
new DirectoryInfo(removePath).Delete(false);
}
catch (IOException)
{
if (new DirectoryInfo(removePath).GetFileSystemInfos().Length > 0)
throw new NFSStatusException(NFSStatus.NFSERR_NOTEMPTY);
else
throw new NFSStatusException(NFSStatus.NFSERR_PERM);
}
if (fh != null) FileTable.Remove(fh);
packer.setUint32((uint)NFSStatus.NFS_OK);
}
public bool Pack(rpcPacker packer, uint cookie, uint count)
{
packer.setUint32((uint)NFSStatus.NFS_OK);
uint size = 8; // First pointer + EOF
if (cookie >= entries.Length)
{
// nothing
}
else
{
do
{
entry next = entries[cookie];
if (size + next.Size > count)
break;
else
size += next.Size;
// true as in yes, more follows. This is *entry.
packer.setUint32(1);
next.Pack(packer);
}
while (++cookie < entries.Length);
}
// false as in no more follow. This is *entry.
// Unlike EOF which is set only when all entries have been sent
// *entry is reset to false following the last entry in each
// batch.
packer.setUint32(0);
//Console.WriteLine("ReadDir: Pack done. cookie:{0}, size:{1}", cookie, size);
// EOF
if (cookie >= entries.Length)
{
packer.setUint32((uint)1); // yes
return true;
}
else
{
packer.setUint32((uint)0); // no
return false;
}
}
private void Mount(rpcCracker cracker, rpcPacker reply)
{
uint length = cracker.get_uint32();
string dirPath = "";
for (uint i = 0; i < length; ++i)
dirPath += cracker.get_char();
Console.WriteLine("Mount {0}:{1}", length, dirPath);
if (Directory.Exists(dirPath) == false)
{
reply.setUint32(2); // Errno for no such file or directory
reply.setUint32(0); // Where fh would go
}
else
{
fhandle fh = FileTable.Add(new FileEntry(dirPath));
reply.setUint32(0); // Success
fh.Pack(reply);
}
}
public static void PackSuccess(rpcPacker packer, fattr attr)
{
packer.setUint32((uint)NFSStatus.NFS_OK);
attr.Pack(packer);
}
public static void PackError(rpcPacker packer, NFSStatus error)
{
packer.setUint32((uint)error);
}
private void Remove(rpcCracker cracker, rpcPacker packer)
{
diropargs args = new diropargs(cracker);
String removePath = FileTable.LookupFileEntry(args.DirHandle).Name + @"\" + args.FileName;
FileInfo info = new FileInfo(removePath);
if (info.Exists == false)
{
removePath += ".sl";
info = new FileInfo(removePath);
}
Console.WriteLine(@"Remove: {0}", removePath);
fhandle fh = FileTable.LookupFileHandle(removePath);
info.Delete();
// If UnauthorizedAccessException is thrown & caught should
// probably stat file to determine if the cause is because
// the path is a dir rather than a directory.
if (fh != null) FileTable.Remove(fh);
packer.setUint32((uint)NFSStatus.NFS_OK);
}
private void Rename(rpcCracker cracker, rpcPacker packer)
{
diropargs from = new diropargs(cracker);
diropargs to = new diropargs(cracker);
string fromPath = FileTable.LookupFileEntry(from.DirHandle).Name + @"\" + from.FileName;
string toPath = FileTable.LookupFileEntry(to.DirHandle).Name + @"\" + to.FileName;
Console.WriteLine("Rename {0} to {1}", fromPath, toPath);
if (File.Exists(toPath) == true)
File.Delete(toPath);
File.Move(fromPath, toPath);
// Only bother updating the FileTable if the operation was successful
FileTable.Rename(fromPath, toPath);
packer.setUint32((uint)NFSStatus.NFS_OK);
}
public void Pack(rpcPacker packer)
{
//Console.WriteLine("entry pack name:{0}", name);
packer.setUint32(fileid);
packer.setString(name);
packer.setUint32(cookie);
}
private void StatFS(rpcCracker cracker, rpcPacker packer)
{
const uint BLOCK_SIZE = 4096;
fhandle fh = new fhandle(cracker);
FileEntry file = FileTable.LookupFileEntry(fh);
Console.WriteLine("StatFS: {0}", file.Name);
System.UInt64 freeBytesAvailable = 0;
System.UInt64 totalNumberOfBytes = 0;
System.UInt64 totalNumberOfFreeBytes = 0;
if (UnmanagedWin32API.GetDiskFreeSpaceEx(file.Name, ref freeBytesAvailable, ref totalNumberOfBytes, ref totalNumberOfFreeBytes) == false)
throw new NFSStatusException(NFSStatus.NFSERR_EXIST);
freeBytesAvailable /= BLOCK_SIZE;
totalNumberOfBytes /= BLOCK_SIZE;
totalNumberOfFreeBytes /= BLOCK_SIZE;
packer.setUint32((uint)NFSStatus.NFS_OK);
packer.setUint32(BLOCK_SIZE); // tsize: optimum transfer size
packer.setUint32(BLOCK_SIZE); // Block size of FS
packer.setUint32((uint)totalNumberOfBytes); // Total # of blocks (of the above size)
packer.setUint32((uint)totalNumberOfFreeBytes); // Free blocks
packer.setUint32((uint)freeBytesAvailable); // Free blocks available to non-priv. users
}
private rpcPacker NewAcceptReply(uint xid, uint acceptStatus)
{
rpcPacker reply = new rpcPacker();
reply.setUint32(xid);
reply.setUint32(1); // rpc_msg.REPLY
reply.setUint32(0); // rpc_msg.reply_body.MSG_ACCEPTED
reply.setUint32(0); // rpc_msg.reply_body.accepted_reply.opaque_auth.NULL
reply.setUint32(0); // rpc_msg.reply_body.accepted_reply.opaque_auth.<datsize>
// rpc_msg.reply_body.accepted_reply.<case>
reply.setUint32(acceptStatus);
return reply;
}
private void SymLink(rpcCracker cracker, rpcPacker packer)
{
diropargs args = new diropargs(cracker);
string path = cracker.get_String();
sattr attr = new sattr(cracker);
String createPath = FileTable.LookupFileEntry(args.DirHandle).Name + @"\" + args.FileName + ".sl";
Console.WriteLine("Symlink: {0}->{1}", createPath, path);
fhandle fh;
if ((fh = FileTable.LookupFileHandle(createPath)) == null)
fh = FileTable.Add(new FileEntry(createPath));
try
{
FileStream symlink = new FileStream(createPath, FileMode.CreateNew, FileAccess.Write);
try
{
UTF8Encoding pathUTF8 = new UTF8Encoding();
byte[] buf = pathUTF8.GetBytes(path);
symlink.Write(buf, 0, buf.Length);
packer.setUint32((uint)NFSStatus.NFS_OK);
}
finally
{
symlink.Close();
}
}
catch(IOException)
{
if (new FileInfo(createPath).Exists == true)
throw new NFSStatusException(NFSStatus.NFSERR_EXIST);
else
throw;
}
}
public void Pack(rpcPacker packer)
{
packer.setUint32(seconds);
packer.setUint32(useconds);
}
