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Java file server with SMB, FTP/FTPS and NFS support, virtual filesystems, database filesystems
/*
* Copyright (C) 2020 GK Spencer
*
* JFileServer is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* JFileServer 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with JFileServer. If not, see "));
HexDump.Dump(rpc.getBuffer(), rpc.getLength(), 0);
}
// Return the RPC response
return response;
}
/**
* Process the null request
*
* @param nfsSess NFSSrvSession
* @param rpc RpcPacket
* @return RpcPacket
*/
private final RpcPacket procNull(NFSSrvSession nfsSess, RpcPacket rpc) {
// Build the response
rpc.buildResponseHeader();
return rpc;
}
/**
* Process the get attributes request
*
* @param nfsSess NFSSrvSession
* @param rpc RpcPacket
* @return RpcPacket
*/
private final RpcPacket procGetAttr(NFSSrvSession nfsSess, RpcPacket rpc) {
// Get the handle from the request
byte[] handle = new byte[NFS3.FileHandleSize];
rpc.unpackByteArrayWithLength(handle);
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.INFO))
nfsSess.debugPrintln("GetAttr request from " + rpc.getClientDetails() + ", handle=" + NFSHandle.asString(handle));
// Check if the handle is valid
if (NFSHandle.isValid(handle) == false) {
// Return an error status
rpc.buildErrorResponse(NFS3.StatusCode.BadHandle.intValue());
return rpc;
}
// Build the response header
rpc.buildResponseHeader();
// Check if this is a share handle
int shareId = -1;
String path = null;
NFS3.StatusCode errorSts = NFS3.StatusCode.Success;
// Call the disk share driver to get the file information for the path
try {
// Get the share id and path
shareId = getShareIdFromHandle(handle);
TreeConnection conn = getTreeConnection(nfsSess, shareId);
// Check if the session has the required access to the shared filesystem
if (conn.hasReadAccess() == false)
throw new AccessDeniedException();
// Get the path from the handle
path = getPathForHandle(nfsSess, handle, conn);
// Check if the session has the required access to the shared filesystem
if (conn.hasReadAccess() == false)
throw new AccessDeniedException();
// Get the disk interface from the disk driver
DiskInterface disk = (DiskInterface) conn.getSharedDevice().getInterface();
// Get the network file details, if the file is open
NetworkFile netFile = getOpenNetworkFileForHandle(nfsSess, handle, conn);
// Get the file information for the specified path
FileInfo finfo = disk.getFileInformation(nfsSess, conn, path);
if (finfo != null) {
// Blend in live file details, if the file is open
if (netFile != null) {
// Update file size from open file
finfo.setFileSize(netFile.getFileSize());
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.INFO))
nfsSess.debugPrintln("GetAttr added details from open file");
}
// Pack the file information into the NFS attributes structure
rpc.packInt(NFS3.StatusCode.Success.intValue());
packAttributes3(rpc, finfo, shareId);
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.INFO))
nfsSess.debugPrintln("GetAttr path=" + path + ", info=" + finfo);
}
}
catch (BadHandleException ex) {
errorSts = NFS3.StatusCode.BadHandle;
}
catch (StaleHandleException ex) {
errorSts = NFS3.StatusCode.Stale;
}
catch (AccessDeniedException ex) {
errorSts = NFS3.StatusCode.Access;
}
catch (Exception ex) {
errorSts = NFS3.StatusCode.ServerFault;
// DEBUG
if (Debug.EnableError && nfsSess.hasDebug(NFSSrvSession.Dbg.ERROR)) {
nfsSess.debugPrintln("GetAttr Exception: " + ex.toString());
nfsSess.debugPrintln(ex);
}
}
// Error status
if (errorSts != NFS3.StatusCode.Success) {
// Pack the error response
rpc.buildErrorResponse(errorSts.intValue());
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.ERROR))
nfsSess.debugPrintln("GetAttr error=" + errorSts.getStatusString());
}
// Return the attributes
rpc.setLength();
return rpc;
}
/**
* Process the set attributes request
*
* @param nfsSess NFSSrvSession
* @param rpc RpcPacket
* @return RpcPacket
*/
private final RpcPacket procSetAttr(NFSSrvSession nfsSess, RpcPacket rpc) {
// Unpack the set attributes parameters
byte[] handle = new byte[NFS3.FileHandleSize];
rpc.unpackByteArrayWithLength(handle);
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.INFO))
nfsSess.debugPrintln("SetAttr request from " + rpc.getClientDetails());
// Check if the handle is valid
if (NFSHandle.isValid(handle) == false) {
rpc.buildErrorResponse(NFS3.StatusCode.BadHandle.intValue());
return rpc;
}
// Check if this is a share handle
int shareId = -1;
String path = null;
NFS3.StatusCode errorSts = NFS3.StatusCode.Success;
// Call the disk share driver to get the file information for the path
try {
// Get the share id and path
shareId = getShareIdFromHandle(handle);
TreeConnection conn = getTreeConnection(nfsSess, shareId);
// Check if the session has the required access to the shared filesystem
if (conn.hasWriteAccess() == false)
throw new AccessDeniedException();
// Get the path from the handle
path = getPathForHandle(nfsSess, handle, conn);
// Get the disk interface from the disk driver
DiskInterface disk = (DiskInterface) conn.getSharedDevice().getInterface();
// Get the current file information
FileInfo oldInfo = disk.getFileInformation(nfsSess, conn, path);
// Get the values to be set for the file/folder
int setFlags = 0;
int gid = -1;
int uid = -1;
int mode = -1;
long fsize = -1L;
long atime = -1L;
long mtime = -1L;
// Check if the file mode has been specified
if (rpc.unpackInt() == Rpc.True) {
mode = rpc.unpackInt();
setFlags += FileInfo.SetMode;
}
// Check if the file owner uid has been specified
if (rpc.unpackInt() == Rpc.True) {
uid = rpc.unpackInt();
setFlags += FileInfo.SetUid;
}
// Check if the file group gid has been specified
if (rpc.unpackInt() == Rpc.True) {
gid = rpc.unpackInt();
setFlags += FileInfo.SetGid;
}
// Check if a new file size has been specified
if (rpc.unpackInt() == Rpc.True) {
fsize = rpc.unpackLong();
setFlags += FileInfo.SetFileSize;
}
// Check if the access date/time should be set. It may be set to a client specified time
// or using the server time
NFS3.SetAttrTimestamp setTime = NFS3.SetAttrTimestamp.fromInt(rpc.unpackInt());
if (setTime == NFS3.SetAttrTimestamp.TimeClient) {
int timeInt = rpc.unpackInt();
if (timeInt >= 0)
atime = (long) timeInt;
else {
atime = (long) (timeInt & 0x7FFFFFFF);
atime += 0x80000000L;
}
atime *= 1000L;
rpc.skipBytes(4); // nanoseconds
setFlags += FileInfo.SetAccessDate;
} else if (setTime == NFS3.SetAttrTimestamp.TimeServer) {
atime = System.currentTimeMillis();
setFlags += FileInfo.SetAccessDate;
}
// Check if the modify date/time should be set. It may be set to a client specified time
// or using the server time
setTime = NFS3.SetAttrTimestamp.fromInt(rpc.unpackInt());
if (setTime == NFS3.SetAttrTimestamp.TimeClient) {
int timeInt = rpc.unpackInt();
if (timeInt >= 0)
mtime = (long) timeInt;
else {
mtime = (long) (timeInt & 0x7FFFFFFF);
mtime += 0x80000000L;
}
mtime = (long) rpc.unpackInt();
mtime *= 1000L;
rpc.skipBytes(4); // nanoseconds
setFlags += FileInfo.SetModifyDate;
} else if (setTime == NFS3.SetAttrTimestamp.TimeServer) {
mtime = System.currentTimeMillis();
setFlags += FileInfo.SetModifyDate;
}
// Check if any of the file times should be updated
if (setFlags != 0) {
// Set the file access/modify date/times
FileInfo finfo = new FileInfo();
finfo.setFileInformationFlags(setFlags);
if (atime != -1L)
finfo.setAccessDateTime(atime);
if (mtime != -1L)
finfo.setModifyDateTime(mtime);
// Check if the group id should be set
if (gid != -1) {
// Set the group id in the file information
finfo.setGid(gid);
}
// Check if the user id should be set
if (uid != -1) {
// Set the user id in the file information
finfo.setUid(uid);
}
// Check if the mode should be set
if (mode != -1) {
// Set the mode in the file information
finfo.setMode(mode);
}
// Set the file information
disk.setFileInformation(nfsSess, conn, path, finfo);
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.INFO))
nfsSess.debugPrintln("SetAttr handle=" + NFSHandle.asString(handle) + ", accessTime=" + finfo.getAccessDateTime() +
", modifyTime=" + finfo.getModifyDateTime() + ", mode=" + mode + ", gid/uid=" + gid + "/" + uid);
}
// Check if the file size should be updated
if (fsize != -1L) {
// Open the file, may be cached
NetworkFile netFile = getNetworkFileForHandle(nfsSess, handle, conn, false);
synchronized (netFile) {
// Open the network file
netFile.openFile(false);
// Change the file size
disk.truncateFile(nfsSess, conn, netFile, fsize);
// Close the file
// netFile.close();
}
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.INFO))
nfsSess.debugPrintln("SetAttr handle=" + NFSHandle.asString(handle) + ", newSize=" + fsize);
}
// Get the updated file information
FileInfo newInfo = disk.getFileInformation(nfsSess, conn, path);
// Check if the file size was changed
if (fsize != -1L)
newInfo.setFileSize(fsize);
else {
// Check if the file is open, use the current size
NetworkFile netFile = getOpenNetworkFileForHandle(nfsSess, handle, conn);
if (netFile != null)
newInfo.setFileSize(netFile.getFileSize());
}
// Report the requested mode back to the client
// if ( mode != -1)
// newInfo.setMode(mode);
// Make sure the access time is set
// if ( newInfo.hasAccessDateTime() == false)
// newInfo.setAccessDateTime( System.currentTimeMillis());
// Pack the response
rpc.buildResponseHeader();
rpc.packInt(NFS3.StatusCode.Success.intValue());
packWccData(rpc, oldInfo);
packPostOpAttr(nfsSess, newInfo, shareId, rpc);
}
catch (BadHandleException ex) {
errorSts = NFS3.StatusCode.BadHandle;
}
catch (StaleHandleException ex) {
errorSts = NFS3.StatusCode.Stale;
}
catch (AccessDeniedException ex) {
errorSts = NFS3.StatusCode.Access;
}
catch (DiskFullException ex) {
errorSts = NFS3.StatusCode.DQuot;
}
catch (Exception ex) {
errorSts = NFS3.StatusCode.ServerFault;
// DEBUG
if (Debug.EnableError && nfsSess.hasDebug(NFSSrvSession.Dbg.ERROR))
nfsSess.debugPrintln("SetAttr Exception: " + ex.toString());
}
// Check for a failure status
if (errorSts != NFS3.StatusCode.Success) {
// Pack the error response
rpc.buildErrorResponse(errorSts.intValue());
packWccData(rpc, null);
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.ERROR))
nfsSess.debugPrintln("SetAttr error=" + errorSts.getStatusString());
}
// Return a the set status
rpc.setLength();
return rpc;
}
/**
* Process the lookup request
*
* @param nfsSess NFSSrvSession
* @param rpc RpcPacket
* @return RpcPacket
*/
private final RpcPacket procLookup(NFSSrvSession nfsSess, RpcPacket rpc) {
// Unpack the lookup arguments
byte[] handle = new byte[NFS3.FileHandleSize];
rpc.unpackByteArrayWithLength(handle);
String fileName = rpc.unpackUTF8String();
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.SEARCH))
nfsSess.debugPrintln("Lookup request from " + rpc.getClientDetails() + ", handle=" + NFSHandle.asString(handle) +
", name=" + fileName);
// Check if the handle is valid
if (NFSHandle.isValid(handle) == false) {
rpc.buildErrorResponse(NFS3.StatusCode.BadHandle.intValue());
return rpc;
}
// Call the disk share driver to get the file information for the path
int shareId = -1;
String path = null;
NFS3.StatusCode errorSts = NFS3.StatusCode.Success;
try {
// Get the share id and path
shareId = getShareIdFromHandle(handle);
TreeConnection conn = getTreeConnection(nfsSess, shareId);
// Check if the session has the required access to the shared filesystem
if (conn.hasReadAccess() == false)
throw new AccessDeniedException();
// Get the path from the handle
path = getPathForHandle(nfsSess, handle, conn);
// Get the disk interface from the disk driver
DiskInterface disk = (DiskInterface) conn.getSharedDevice().getInterface();
// Build the full path string
String lookupPath = generatePath(path, fileName);
// Check if the file/directory exists
if (disk.fileExists(nfsSess, conn, lookupPath) != FileStatus.NotExist) {
// Get file information for the path
FileInfo finfo = disk.getFileInformation(nfsSess, conn, lookupPath);
if (finfo != null) {
// Get a handle to the file
byte[] fHandle = getHandleForFile(nfsSess, handle, conn, fileName);
// Get the network file details, if the file is open
NetworkFile netFile = getOpenNetworkFileForHandle(nfsSess, fHandle, conn);
if (netFile != null)
finfo.setFileSize(netFile.getFileSize());
// Pack the response
rpc.buildResponseHeader();
rpc.packInt(NFS3.StatusCode.Success.intValue());
// Pack the file handle
if (finfo.isDirectory())
NFSHandle.packDirectoryHandle(shareId, finfo.getFileId(), rpc, NFS3.FileHandleSize);
else
NFSHandle.packFileHandle(shareId, getFileIdForHandle(handle), finfo.getFileId(), rpc, NFS3.FileHandleSize);
// Pack the file attributes
packPostOpAttr(nfsSess, finfo, shareId, rpc);
// Add a cache entry for the path
ShareDetails details = nfsSess.getNFSServer().findShareDetails( shareId);
details.getFileIdCache().addPath(finfo.getFileId(), lookupPath);
// Check if the file path is a file name only, if so then get the parent directory details
if (pathHasDirectories(fileName) == false || fileName.equals("..")) {
// Get the parent directory file information
FileInfo dirInfo = disk.getFileInformation(nfsSess, conn, path);
packPostOpAttr(nfsSess, dirInfo, shareId, rpc);
// Add the path to the file id cache, if the filesystem does not support id lookups
if (details.hasFileIdSupport() == false)
details.getFileIdCache().addPath(dirInfo.getFileId(), path);
}
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.SEARCH))
nfsSess.debugPrintln("Lookup path=" + lookupPath + ", finfo=" + finfo.toString());
}
} else {
// File does not exist
errorSts = NFS3.StatusCode.NoEnt;
}
}
catch (BadHandleException ex) {
errorSts = NFS3.StatusCode.BadHandle;
}
catch (StaleHandleException ex) {
errorSts = NFS3.StatusCode.Stale;
}
catch (AccessDeniedException ex) {
errorSts = NFS3.StatusCode.Access;
}
catch (Exception ex) {
errorSts = NFS3.StatusCode.ServerFault;
// DEBUG
if (Debug.EnableError && nfsSess.hasDebug(NFSSrvSession.Dbg.ERROR))
nfsSess.debugPrintln("Lookup Exception: " + ex.toString());
}
// Check if an error is being returned
if (errorSts != NFS3.StatusCode.Success) {
// Pack the response
rpc.buildErrorResponse(errorSts.intValue());
packPostOpAttr(nfsSess, null, shareId, rpc);
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.ERROR))
Debug.println("Lookup error=" + errorSts.getStatusString());
}
// Return the response
rpc.setLength();
return rpc;
}
/**
* Process the access request
*
* @param nfsSess NFSSrvSession
* @param rpc RpcPacket
* @return RpcPacket
*/
private final RpcPacket procAccess(NFSSrvSession nfsSess, RpcPacket rpc) {
// Get the parameters from the request
byte[] handle = new byte[NFS3.FileHandleSize];
rpc.unpackByteArrayWithLength(handle);
int accessMode = rpc.unpackInt();
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.INFO))
nfsSess.debugPrintln("Access request from " + rpc.getClientDetails() + ", handle=" + NFSHandle.asString(handle) +
", access=0x" + Integer.toHexString(accessMode));
// Check if the handle is valid
if (NFSHandle.isValid(handle) == false) {
// Return an error status
rpc.buildErrorResponse(NFS3.StatusCode.BadHandle.intValue());
return rpc;
}
// Check if this is a share handle
int shareId = -1;
String path = null;
NFS3.StatusCode errorSts = NFS3.StatusCode.Success;
// Call the disk share driver to get the file information for the path
try {
// Check if the access check is on the share handle
if (NFSHandle.isShareHandle(handle)) {
// Pack the response
rpc.buildResponseHeader();
rpc.packInt(NFS3.StatusCode.Success.intValue());
packPostOpAttr(nfsSess, null, shareId, rpc);
rpc.packInt(accessMode & NFS3.AccessAll);
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.INFO))
Debug.println("Access share path=" + path);
} else {
// Get the share id and path
shareId = getShareIdFromHandle(handle);
TreeConnection conn = getTreeConnection(nfsSess, shareId);
path = getPathForHandle(nfsSess, handle, conn);
// Get the disk interface from the disk driver
DiskInterface disk = (DiskInterface) conn.getSharedDevice().getInterface();
// Get the file information for the specified path
FileInfo finfo = disk.getFileInformation(nfsSess, conn, path);
if (finfo != null) {
// Check the access that the session has to the filesystem
int mask = 0;
if (conn.hasWriteAccess()) {
// Set the mask to allow all operations
mask = NFS3.AccessAll;
} else if (conn.hasReadAccess()) {
// Set the mask for read-only operations
mask = NFS3.AccessRead + NFS3.AccessLookup + NFS3.AccessExecute;
}
// Check if the file is open, blend in current file details
NetworkFile netFile = getOpenNetworkFileForHandle(nfsSess, handle, conn);
if (netFile != null)
finfo.setFileSize(netFile.getFileSize());
// Pack the response
rpc.buildResponseHeader();
rpc.packInt(NFS3.StatusCode.Success.intValue());
packPostOpAttr(nfsSess, finfo, shareId, rpc);
rpc.packInt(accessMode & mask);
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.INFO))
Debug.println("Access path=" + path + ", info=" + finfo);
} else {
// Return an error status
errorSts = NFS3.StatusCode.NoEnt;
}
}
}
catch (BadHandleException ex) {
errorSts = NFS3.StatusCode.BadHandle;
}
catch (StaleHandleException ex) {
errorSts = NFS3.StatusCode.Stale;
}
catch (Exception ex) {
errorSts = NFS3.StatusCode.ServerFault;
// DEBUG
if (Debug.EnableError && nfsSess.hasDebug(NFSSrvSession.Dbg.ERROR)) {
nfsSess.debugPrintln("Access3 Exception: " + ex.toString());
nfsSess.debugPrintln(ex);
}
}
// Check for an error status
if (errorSts != NFS3.StatusCode.Success) {
rpc.buildErrorResponse(errorSts.intValue());
packPostOpAttr(nfsSess, null, shareId, rpc);
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.ERROR))
nfsSess.debugPrintln("Access error=" + errorSts.getStatusString());
}
// Return the response
rpc.setLength();
return rpc;
}
/**
* Process the read link request
*
* @param nfsSess NFSSrvSession
* @param rpc RpcPacket
* @return RpcPacket
*/
private final RpcPacket procReadLink(NFSSrvSession nfsSess, RpcPacket rpc) {
// Unpack the read link arguments
byte[] handle = new byte[NFS3.FileHandleSize];
rpc.unpackByteArrayWithLength(handle);
// Check if the handle is valid
if (NFSHandle.isValid(handle) == false) {
rpc.buildErrorResponse(NFS3.StatusCode.BadHandle.intValue());
return rpc;
}
// Build the response header
rpc.buildResponseHeader();
// Call the disk share driver to read the symbolic link data
int shareId = -1;
String path = null;
NFS3.StatusCode errorSts = NFS3.StatusCode.Success;
RpcPacket respRpc = rpc;
try {
// Get the share id and path
shareId = getShareIdFromHandle(handle);
TreeConnection conn = getTreeConnection(nfsSess, shareId);
path = getPathForHandle(nfsSess, handle, conn);
// Check if the filesystem supports symbolic links
boolean symLinks = false;
if (conn.getInterface() instanceof SymbolicLinkInterface) {
// Check if symbolic links are enabled in the filesystem
SymbolicLinkInterface symLinkIface = (SymbolicLinkInterface) conn.getInterface();
symLinks = symLinkIface.hasSymbolicLinksEnabled(nfsSess, conn);
}
// Check if symbolic links are not supported or not enabled
if (symLinks == false) {
// Symbolic links not supported on this filesystem
rpc.buildErrorResponse(NFS3.StatusCode.NotSupp.intValue());
packPostOpAttr(nfsSess, null, 0, rpc);
packWccData(rpc, null);
rpc.setLength();
return rpc;
}
// Get the disk interface from the disk driver
DiskInterface disk = (DiskInterface) conn.getSharedDevice().getInterface();
// Get the file information for the symbolic link
FileInfo finfo = disk.getFileInformation(nfsSess, conn, path);
if (finfo != null && finfo.isFileType() == FileType.SymbolicLink) {
// Get the symbolic link data
SymbolicLinkInterface symLinkInterface = (SymbolicLinkInterface) disk;
String linkData = symLinkInterface.readSymbolicLink(nfsSess, conn, path);
// Allocate a larger buffer for the response
respRpc = nfsSess.getNFSServer().getPacketPool().allocateAssociatedPacket( RespSizeReadLink, rpc, -1);
// Pack the read link response
respRpc.packInt(NFS3.StatusCode.Success.intValue());
packPostOpAttr(nfsSess, finfo, shareId, respRpc);
respRpc.packString(linkData);
} else {
// Return an error status, not a symbolic link
errorSts = NFS3.StatusCode.InVal;
}
}
catch (BadHandleException ex) {
errorSts = NFS3.StatusCode.BadHandle;
}
catch (StaleHandleException ex) {
errorSts = NFS3.StatusCode.Stale;
}
catch (AccessDeniedException ex) {
errorSts = NFS3.StatusCode.Access;
}
catch (Exception ex) {
errorSts = NFS3.StatusCode.ServerFault;
// DEBUG
if (Debug.EnableError && nfsSess.hasDebug(NFSSrvSession.Dbg.ERROR))
nfsSess.debugPrintln("ReadLink Exception: " + ex.toString());
}
// Error status
if (errorSts != NFS3.StatusCode.Success) {
// Pack the error response
respRpc.buildErrorResponse(errorSts.intValue());
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.ERROR))
nfsSess.debugPrintln("ReadLink error=" + errorSts.getStatusString());
}
// Return the response
respRpc.setLength();
return respRpc;
}
/**
* Process the read file request
*
* @param nfsSess NFSSrvSession
* @param rpc RpcPacket
* @return RpcPacket
*/
private final RpcPacket procRead(NFSSrvSession nfsSess, RpcPacket rpc) {
// Unpack the read parameters
byte[] handle = new byte[NFS3.FileHandleSize];
rpc.unpackByteArrayWithLength(handle);
long offset = rpc.unpackLong();
int count = rpc.unpackInt();
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.FILEIO))
nfsSess.debugPrintln("[NFS] Read request " + rpc.getClientDetails() + ", count=" + count + ", pos=" + offset);
// Call the disk share driver to read the file
int shareId = -1;
NetworkFile netFile = null;
NFS3.StatusCode errorSts = NFS3.StatusCode.Success;
RpcPacket respRpc = rpc;
try {
// Get the share id and associated shared device
shareId = getShareIdFromHandle(handle);
TreeConnection conn = getTreeConnection(nfsSess, shareId);
// Check if the session has the required access to the shared filesystem
if (conn.hasReadAccess() == false)
throw new AccessDeniedException();
// Get the network file, it may be cached
netFile = getNetworkFileForHandle(nfsSess, handle, conn, true);
// Get the disk interface from the disk driver
DiskInterface disk = (DiskInterface) conn.getSharedDevice().getInterface();
// Allocate a larger response RPC packet, associate with the request RPC
int allocLen = rpc.getRequestHeaderLength() + count + NFS3.LenPostOpAttr3;
respRpc = nfsSess.getNFSServer().getPacketPool().allocateAssociatedPacket( allocLen, rpc, -1);
// Pack the start of the response
respRpc.buildResponseHeader();
respRpc.packInt(NFS3.StatusCode.Success.intValue());
// Get file information for the path and pack into the reply
FileInfo finfo = disk.getFileInformation(nfsSess, conn, netFile.getFullName());
finfo.setFileSize(netFile.getFileSize());
packPostOpAttr(nfsSess, finfo, shareId, respRpc);
// Save the current position in the response buffer to fill in the length and end of file flag after
// the read.
int bufPos = respRpc.getPosition();
// Read the network file
int rdlen = -1;
synchronized (netFile) {
// Make sure the network file is open
if (netFile.isClosed())
netFile.openFile(false);
// Read a block of data from the file
rdlen = disk.readFile(nfsSess, conn, netFile, respRpc.getBuffer(), bufPos + 12, count, offset);
}
// Set the read length
respRpc.packInt(rdlen);
// Set the end of file flag
if ( finfo.getSize() > (offset + count)) {
// Not at end of file
respRpc.packInt( Rpc.False);
}
else {
// Read is up to end of file
respRpc.packInt( Rpc.True);
}
respRpc.packInt(rdlen);
// Set the response length
respRpc.setLength((bufPos + 12 + ((rdlen + 3) & 0xFFFFFFFC)) - respRpc.getOffset());
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.FILEIO))
nfsSess.debugPrintln("Read fid=" + netFile.getFileId() + ", name=" + netFile.getName() + ", rdlen=" + rdlen);
}
catch (BadHandleException ex) {
errorSts = NFS3.StatusCode.BadHandle;
}
catch (StaleHandleException ex) {
errorSts = NFS3.StatusCode.Stale;
}
catch (AccessDeniedException ex) {
errorSts = NFS3.StatusCode.Access;
}
catch (Exception ex) {
errorSts = NFS3.StatusCode.ServerFault;
// DEBUG
if (Debug.EnableError && nfsSess.hasDebug(NFSSrvSession.Dbg.ERROR)) {
nfsSess.debugPrintln("Read Exception: netFile=" + netFile + ", cache=" + nfsSess.getFileCache().numberOfEntries());
nfsSess.debugPrintln(ex);
}
}
// Check for an error status
if (errorSts != NFS3.StatusCode.Success) {
// Pack the error response
respRpc.buildErrorResponse(errorSts.intValue());
packPostOpAttr(nfsSess, null, shareId, respRpc);
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.ERROR))
nfsSess.debugPrintln("Read error=" + errorSts.getStatusString());
}
// Return the response
return respRpc;
}
/**
* Process the write file request
*
* @param nfsSess NFSSrvSession
* @param rpc RpcPacket
* @return RpcPacket
*/
private final RpcPacket procWrite(NFSSrvSession nfsSess, RpcPacket rpc) {
// Unpack the read parameters
byte[] handle = new byte[NFS3.FileHandleSize];
rpc.unpackByteArrayWithLength(handle);
long offset = rpc.unpackLong();
int count = rpc.unpackInt();
int stable = rpc.unpackInt();
// Skip the second write length, position at the start of the data to write
rpc.skipBytes(4);
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.FILEIO))
nfsSess.debugPrintln("Write request from " + rpc.getClientDetails() + " , count=" + count + ", offset=" + offset);
// Call the disk share driver to write to the file
int shareId = -1;
String path = null;
NetworkFile netFile = null;
NFS3.StatusCode errorSts = NFS3.StatusCode.Success;
try {
// Get the share id and associated shared device
shareId = getShareIdFromHandle(handle);
TreeConnection conn = getTreeConnection(nfsSess, shareId);
// Check if the session has the required access to the shared filesystem
if (conn.hasWriteAccess() == false)
throw new AccessDeniedException();
// Get the network file, it may be cached
netFile = getNetworkFileForHandle(nfsSess, handle, conn, false);
// Get the file path
path = getPathForHandle(nfsSess, handle, conn);
// Get the disk interface from the disk driver
DiskInterface disk = (DiskInterface) conn.getSharedDevice().getInterface();
// Check if threaded writes should be used
FileInfo preInfo = null;
synchronized (netFile) {
// Make sure the network file is open
if (netFile.isClosed())
netFile.openFile(false);
// Get the pre-operation file details
preInfo = disk.getFileInformation(nfsSess, conn, path);
// Write to the network file
disk.writeFile(nfsSess, conn, netFile, rpc.getBuffer(), rpc.getPosition(), count, offset);
}
// Get file information for the path and pack the response
FileInfo finfo = disk.getFileInformation(nfsSess, conn, path);
// Set the current file size from the open file
finfo.setFileSize(netFile.getFileSize());
// Pack the response
rpc.buildResponseHeader();
rpc.packInt(NFS3.StatusCode.Success.intValue());
packPreOpAttr(nfsSess, preInfo, rpc);
packPostOpAttr(nfsSess, finfo, shareId, rpc);
rpc.packInt(count);
rpc.packInt(stable);
rpc.packLong( nfsSess.getNFSServer().getWriteVerifier());
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.FILEIO))
nfsSess.debugPrintln("Write fid=" + netFile.getFileId() + ", name=" + netFile.getName() + ", wrlen=" + count);
}
catch (BadHandleException ex) {
errorSts = NFS3.StatusCode.BadHandle;
}
catch (StaleHandleException ex) {
errorSts = NFS3.StatusCode.Stale;
}
catch (AccessDeniedException ex) {
errorSts = NFS3.StatusCode.Access;
}
catch (DiskFullException ex) {
errorSts = NFS3.StatusCode.NoSpc;
}
catch (Exception ex) {
errorSts = NFS3.StatusCode.ServerFault;
// DEBUG
if (Debug.EnableError && nfsSess.hasDebug(NFSSrvSession.Dbg.ERROR)) {
nfsSess.debugPrintln("Write Exception: netFile=" + netFile + ", cache=" + nfsSess.getFileCache().numberOfEntries());
nfsSess.debugPrintln(ex);
}
}
// Check for a failure status
if (errorSts != NFS3.StatusCode.Success) {
// Pack the error response
rpc.buildErrorResponse(errorSts.intValue());
packWccData(rpc, null); // before attributes
packWccData(rpc, null); // after attributes
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.ERROR))
nfsSess.debugPrintln("Write error=" + errorSts.getStatusString());
}
// Return the write response
rpc.setLength();
return rpc;
}
/**
* Process the create file request
*
* @param nfsSess NFSSrvSession
* @param rpc RpcPacket
* @return RpcPacket
*/
private final RpcPacket procCreate(NFSSrvSession nfsSess, RpcPacket rpc) {
// Unpack the create arguments
byte[] handle = new byte[NFS3.FileHandleSize];
rpc.unpackByteArrayWithLength(handle);
String fileName = rpc.unpackUTF8String();
int createMode = rpc.unpackInt();
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.FILE))
nfsSess.debugPrintln("Create request from " + rpc.getClientDetails() + ", name=" + fileName);
// Check if the handle is valid
if (NFSHandle.isValid(handle) == false) {
rpc.buildErrorResponse(NFS3.StatusCode.BadHandle.intValue());
return rpc;
}
// Call the disk share driver to create the new file
int shareId = -1;
String path = null;
NFS3.StatusCode errorSts = NFS3.StatusCode.Success;
RpcPacket respRpc = rpc;
try {
// Get the share id and path
shareId = getShareIdFromHandle(handle);
TreeConnection conn = getTreeConnection(nfsSess, shareId);
path = getPathForHandle(nfsSess, handle, conn);
// Check if the session has the required access to the shared filesystem
if (conn.hasWriteAccess() == false)
throw new AccessDeniedException();
// Get the disk interface from the disk driver
DiskInterface disk = (DiskInterface) conn.getSharedDevice().getInterface();
// Get the pre-operation state for the parent directory
FileInfo preInfo = disk.getFileInformation(nfsSess, conn, path);
// Build the full path string
StringBuffer str = new StringBuffer();
str.append(path);
if (path.endsWith("\\") == false)
str.append("\\");
str.append(fileName);
String filePath = str.toString();
// Check if the file exists
FileStatus existSts = disk.fileExists(nfsSess, conn, filePath);
if (existSts == FileStatus.FileExists) {
errorSts = NFS3.StatusCode.Exist;
} else if (existSts == FileStatus.DirectoryExists) {
errorSts = NFS3.StatusCode.IsDir;
} else {
// Get the file permissions
int gid = -1;
int uid = -1;
int mode = -1;
if (rpc.unpackInt() == Rpc.True)
mode = rpc.unpackInt();
if (rpc.unpackInt() == Rpc.True)
uid = rpc.unpackInt();
if (rpc.unpackInt() == Rpc.True)
gid = rpc.unpackInt();
// Create a new file
UnixFileOpenParams params = new UnixFileOpenParams(filePath, FileAction.CreateNotExist, AccessMode.ReadWrite, 0, gid, uid, mode, 0);
NetworkFile netFile = disk.createFile(nfsSess, conn, params);
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.FILE))
nfsSess.debugPrintln(" Create file params=" + params);
// Get file information for the path
FileInfo finfo = disk.getFileInformation(nfsSess, conn, filePath);
if (finfo != null) {
// Allocate a larger response RPC packet, associate with the request RPC
respRpc = nfsSess.getNFSServer().getPacketPool().allocateAssociatedPacket( RespSizeCreate, rpc, -1);
// Pack the response
respRpc.buildResponseHeader();
respRpc.packInt(NFS3.StatusCode.Success.intValue());
if (finfo.isDirectory())
packDirectoryHandle(shareId, finfo.getFileId(), respRpc);
else
packFileHandle(shareId, getFileIdForHandle(handle), finfo.getFileId(), respRpc);
// Pack the file attributes
packPostOpAttr(nfsSess, finfo, shareId, respRpc);
// Add a cache entry for the path
ShareDetails details = nfsSess.getNFSServer().findShareDetails( shareId);
details.getFileIdCache().addPath(finfo.getFileId(), filePath);
// Add a cache entry for the network file
nfsSess.getFileCache().addFile(netFile, conn, nfsSess);
// Pack the wcc data structure for the directory
packPreOpAttr(nfsSess, preInfo, respRpc);
FileInfo postInfo = disk.getFileInformation(nfsSess, conn, path);
packPostOpAttr(nfsSess, postInfo, shareId, respRpc);
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.FILE))
nfsSess.debugPrintln("Create path=" + filePath + ", finfo=" + finfo.toString());
// Notify change listeners that a new file has been created
DiskDeviceContext diskCtx = (DiskDeviceContext) conn.getContext();
if (diskCtx.hasChangeHandler())
diskCtx.getChangeHandler().notifyFileChanged(NotifyAction.Added, filePath);
}
}
}
catch (BadHandleException ex) {
errorSts = NFS3.StatusCode.BadHandle;
}
catch (StaleHandleException ex) {
errorSts = NFS3.StatusCode.Stale;
}
catch (AccessDeniedException ex) {
errorSts = NFS3.StatusCode.Access;
}
catch (Exception ex) {
errorSts = NFS3.StatusCode.ServerFault;
// DEBUG
if (Debug.EnableError && nfsSess.hasDebug(NFSSrvSession.Dbg.ERROR)) {
nfsSess.debugPrintln("Create Exception: " + ex.toString());
nfsSess.debugPrintln(ex);
}
}
// Check for a failure status
if (errorSts != NFS3.StatusCode.Success) {
// Pack the error response
respRpc.buildErrorResponse(errorSts.intValue());
packWccData(respRpc, null); // before attributes
packWccData(respRpc, null); // after attributes
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.ERROR))
nfsSess.debugPrintln("Create error=" + errorSts.getStatusString());
}
// Return the response
respRpc.setLength();
return respRpc;
}
/**
* Process the create directory request
*
* @param nfsSess NFSSrvSession
* @param rpc RpcPacket
* @return RpcPacket
*/
private final RpcPacket procMkDir(NFSSrvSession nfsSess, RpcPacket rpc) {
// Unpack the mkdir arguments
byte[] handle = new byte[NFS3.FileHandleSize];
rpc.unpackByteArrayWithLength(handle);
String dirName = rpc.unpackUTF8String();
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.DIRECTORY))
nfsSess.debugPrintln("MkDir request from " + rpc.getClientDetails() + ", name=" + dirName);
// Check if the handle is valid
if (NFSHandle.isValid(handle) == false) {
rpc.buildErrorResponse(NFS3.StatusCode.BadHandle.intValue());
return rpc;
}
// Call the disk share driver to create the new directory
int shareId = -1;
String path = null;
NFS3.StatusCode errorSts = NFS3.StatusCode.Success;
RpcPacket respRpc = rpc;
try {
// Get the share id and path
shareId = getShareIdFromHandle(handle);
TreeConnection conn = getTreeConnection(nfsSess, shareId);
path = getPathForHandle(nfsSess, handle, conn);
// Check if the session has the required access to the shared filesystem
if (conn.hasWriteAccess() == false)
throw new AccessDeniedException();
// Get the disk interface from the disk driver
DiskInterface disk = (DiskInterface) conn.getSharedDevice().getInterface();
// Get the pre-operation state for the parent directory
FileInfo preInfo = disk.getFileInformation(nfsSess, conn, path);
// Build the full path string
StringBuffer str = new StringBuffer();
str.append(path);
if (path.endsWith("\\") == false)
str.append("\\");
str.append(dirName);
String dirPath = str.toString();
// Check if the file exists
FileStatus existSts = disk.fileExists(nfsSess, conn, dirPath);
if (existSts != FileStatus.NotExist) {
errorSts = NFS3.StatusCode.Exist;
} else {
// Get the user id, group id and mode for the new directory
int gid = -1;
int uid = -1;
int mode = -1;
if (rpc.unpackInt() == Rpc.True)
mode = rpc.unpackInt();
if (rpc.unpackInt() == Rpc.True)
uid = rpc.unpackInt();
if (rpc.unpackInt() == Rpc.True)
gid = rpc.unpackInt();
// Directory creation parameters
UnixFileOpenParams params = new UnixFileOpenParams(dirPath, FileAction.CreateNotExist, AccessMode.ReadWrite,
FileAttribute.NTDirectory, gid, uid, mode, 0);
// Create a new directory
disk.createDirectory(nfsSess, conn, params);
// Get file information for the new directory
FileInfo finfo = disk.getFileInformation(nfsSess, conn, dirPath);
if (finfo != null) {
// Allocate a larger response RPC packet, associate with the request RPC
respRpc = nfsSess.getNFSServer().getPacketPool().allocateAssociatedPacket( RespSizeMkDir, rpc, -1);
// Pack the response
respRpc.buildResponseHeader();
respRpc.packInt(NFS3.StatusCode.Success.intValue());
packDirectoryHandle(shareId, finfo.getFileId(), respRpc);
// Pack the file attributes
packPostOpAttr(nfsSess, finfo, shareId, respRpc);
// Add a cache entry for the path
ShareDetails details = nfsSess.getNFSServer().findShareDetails( shareId);
details.getFileIdCache().addPath(finfo.getFileId(), dirPath);
// Pack the post operation details for the parent directory
packWccData(respRpc, preInfo);
packPostOpAttr(nfsSess, conn, handle, respRpc);
// Notify change listeners that a new directory has been created
DiskDeviceContext diskCtx = (DiskDeviceContext) conn.getContext();
if (diskCtx.hasChangeHandler())
diskCtx.getChangeHandler().notifyFileChanged(NotifyAction.Added, dirPath);
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.DIRECTORY))
nfsSess.debugPrintln("Mkdir path=" + dirPath + ", finfo=" + finfo.toString());
}
}
}
catch (BadHandleException ex) {
errorSts = NFS3.StatusCode.BadHandle;
}
catch (StaleHandleException ex) {
errorSts = NFS3.StatusCode.Stale;
}
catch (AccessDeniedException ex) {
errorSts = NFS3.StatusCode.Access;
}
catch (Exception ex) {
errorSts = NFS3.StatusCode.ServerFault;
// DEBUG
if (Debug.EnableError && nfsSess.hasDebug(NFSSrvSession.Dbg.ERROR))
nfsSess.debugPrintln("Mkdir Exception: " + ex.toString());
}
// Check for an error status
if (errorSts != NFS3.StatusCode.Success) {
// Pack the error response
respRpc.buildErrorResponse(errorSts.intValue());
packWccData(respRpc, null);
packWccData(respRpc, null);
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.ERROR))
nfsSess.debugPrintln("Mkdir error=" + errorSts.getStatusString());
}
// Return the response
respRpc.setLength();
return respRpc;
}
/**
* Process the create symbolic link request
*
* @param nfsSess NFSSrvSession
* @param rpc RpcPacket
* @return RpcPacket
*/
private final RpcPacket procSymLink(NFSSrvSession nfsSess, RpcPacket rpc) {
// Unpack the create symbolic link arguments
byte[] handle = new byte[NFS3.FileHandleSize];
rpc.unpackByteArrayWithLength(handle);
String fileName = rpc.unpackUTF8String();
// Check if the handle is valid
if (NFSHandle.isValid(handle) == false) {
rpc.buildErrorResponse(NFS3.StatusCode.BadHandle.intValue());
return rpc;
}
// Call the disk share driver to create the symbolic link
int shareId = -1;
String path = null;
NFS3.StatusCode errorSts = NFS3.StatusCode.Success;
try {
// Get the share id and path
shareId = getShareIdFromHandle(handle);
TreeConnection conn = getTreeConnection(nfsSess, shareId);
path = getPathForHandle(nfsSess, handle, conn);
// Check if the filesystem supports symbolic links
boolean symLinks = false;
if (conn.getInterface() instanceof SymbolicLinkInterface) {
// Check if symbolic links are enabled in the filesystem
SymbolicLinkInterface symLinkIface = (SymbolicLinkInterface) conn.getInterface();
symLinks = symLinkIface.hasSymbolicLinksEnabled(nfsSess, conn);
}
// Check if symbolic links are not supported or not enabled
if (symLinks == false) {
// Symbolic links not supported on this filesystem
rpc.buildErrorResponse(NFS3.StatusCode.NotSupp.intValue());
packPostOpAttr(nfsSess, null, 0, rpc);
packWccData(rpc, null);
rpc.setLength();
return rpc;
}
// Check if the session has the required access to the shared filesystem
if (conn.hasWriteAccess() == false)
throw new AccessDeniedException();
// Get the symbolic link attributes
int setFlags = 0;
int gid = -1;
int uid = -1;
int mode = -1;
long fsize = -1L;
long atime = -1L;
long mtime = -1L;
// Check if the file mode has been specified
if (rpc.unpackInt() == Rpc.True) {
mode = rpc.unpackInt();
setFlags += FileInfo.SetMode;
}
// Check if the file owner uid has been specified
if (rpc.unpackInt() == Rpc.True) {
uid = rpc.unpackInt();
setFlags += FileInfo.SetUid;
}
// Check if the file group gid has been specified
if (rpc.unpackInt() == Rpc.True) {
gid = rpc.unpackInt();
setFlags += FileInfo.SetGid;
}
// Check if a new file size has been specified
if (rpc.unpackInt() == Rpc.True) {
fsize = rpc.unpackLong();
setFlags += FileInfo.SetFileSize;
}
// Check if the access date/time should be set. It may be set to a client specified time
// or using the server time
NFS3.SetAttrTimestamp setTime = NFS3.SetAttrTimestamp.fromInt(rpc.unpackInt());
if (setTime == NFS3.SetAttrTimestamp.TimeClient) {
atime = (long) rpc.unpackInt();
atime *= 1000L;
rpc.skipBytes(4); // nanoseconds
setFlags += FileInfo.SetAccessDate;
} else if (setTime == NFS3.SetAttrTimestamp.TimeServer) {
atime = System.currentTimeMillis();
setFlags += FileInfo.SetAccessDate;
}
// Check if the modify date/time should be set. It may be set to a client specified time
// or using the server time
setTime = NFS3.SetAttrTimestamp.fromInt(rpc.unpackInt());
if (setTime == NFS3.SetAttrTimestamp.TimeClient) {
mtime = (long) rpc.unpackInt();
mtime *= 1000L;
rpc.skipBytes(4); // nanoseconds
setFlags += FileInfo.SetModifyDate;
} else if (setTime == NFS3.SetAttrTimestamp.TimeServer) {
mtime = System.currentTimeMillis();
setFlags += FileInfo.SetModifyDate;
}
// Get the symbolic link name
String linkName = rpc.unpackString();
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.FILE))
nfsSess.debugPrintln("Symbolic link request from " + rpc.getClientDetails() + ", name=" + fileName + ", link=" + linkName);
// Get the disk interface from the disk driver
DiskInterface disk = (DiskInterface) conn.getSharedDevice().getInterface();
// Get the pre-operation state for the parent directory
FileInfo preInfo = disk.getFileInformation(nfsSess, conn, path);
// Build the full path string
StringBuffer str = new StringBuffer();
str.append(path);
if (path.endsWith("\\") == false)
str.append("\\");
str.append(fileName);
String filePath = str.toString();
// Check if the file exists
FileStatus existSts = disk.fileExists(nfsSess, conn, filePath);
if (existSts == FileStatus.FileExists) {
errorSts = NFS3.StatusCode.Exist;
} else if (existSts == FileStatus.DirectoryExists) {
errorSts = NFS3.StatusCode.IsDir;
} else {
// Create a new symbolic
UnixFileOpenParams params = new UnixFileOpenParams(filePath, FileAction.CreateNotExist, AccessMode.ReadWrite, 0, gid, uid, mode, 0);
params.setSymbolicLink(linkName);
NetworkFile netFile = disk.createFile(nfsSess, conn, params);
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.FILE))
nfsSess.debugPrintln(" Symbolic link params=" + params);
// Get file information for the path
FileInfo finfo = disk.getFileInformation(nfsSess, conn, filePath);
if (finfo != null) {
// Pack the response
rpc.buildResponseHeader();
rpc.packInt(NFS3.StatusCode.Success.intValue());
packFileHandle(shareId, getFileIdForHandle(handle), finfo.getFileId(), rpc);
// Pack the file attributes
packPostOpAttr(nfsSess, finfo, shareId, rpc);
// Add a cache entry for the path
ShareDetails details = nfsSess.getNFSServer().findShareDetails( shareId);
details.getFileIdCache().addPath(finfo.getFileId(), filePath);
// Add a cache entry for the network file
nfsSess.getFileCache().addFile(netFile, conn, nfsSess);
// Pack the wcc data structure for the directory
packPreOpAttr(nfsSess, preInfo, rpc);
FileInfo postInfo = disk.getFileInformation(nfsSess, conn, path);
packPostOpAttr(nfsSess, postInfo, shareId, rpc);
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.FILE))
nfsSess.debugPrintln("Symbolic link path=" + filePath + ", finfo=" + finfo.toString());
}
}
}
catch (BadHandleException ex) {
errorSts = NFS3.StatusCode.BadHandle;
}
catch (StaleHandleException ex) {
errorSts = NFS3.StatusCode.Stale;
}
catch (AccessDeniedException ex) {
errorSts = NFS3.StatusCode.Access;
}
catch (Exception ex) {
errorSts = NFS3.StatusCode.ServerFault;
// DEBUG
if (Debug.EnableError && nfsSess.hasDebug(NFSSrvSession.Dbg.ERROR))
nfsSess.debugPrintln("SymbolicLink Exception: " + ex.toString());
}
// Error status
if (errorSts != NFS3.StatusCode.Success) {
// Pack the error response
rpc.buildErrorResponse(errorSts.intValue());
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.ERROR))
nfsSess.debugPrintln("SymLink error=" + errorSts.getStatusString());
}
// Return the response
rpc.setLength();
return rpc;
}
/**
* Process the make special device request
*
* @param nfsSess NFSSrvSession
* @param rpc RpcPacket
* @return RpcPacket
*/
private final RpcPacket procMkNode(NFSSrvSession nfsSess, RpcPacket rpc) {
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.DIRECTORY))
nfsSess.debugPrintln("MkNode request from " + rpc.getClientDetails());
// Return an error status
rpc.buildErrorResponse(NFS3.StatusCode.NotSupp.intValue());
packPostOpAttr(nfsSess, null, 0, rpc);
packWccData(rpc, null);
rpc.setLength();
return rpc;
}
/**
* Process the delete file request
*
* @param nfsSess NFSSrvSession
* @param rpc RpcPacket
* @return RpcPacket
*/
private final RpcPacket procRemove(NFSSrvSession nfsSess, RpcPacket rpc) {
// Unpack the remove arguments
byte[] handle = new byte[NFS3.FileHandleSize];
rpc.unpackByteArrayWithLength(handle);
String fileName = rpc.unpackUTF8String();
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.FILE))
nfsSess.debugPrintln("Remove request from " + rpc.getClientDetails() + ", name=" + fileName);
// Call the disk share driver to delete the file
int shareId = -1;
String path = null;
NFS3.StatusCode errorSts = NFS3.StatusCode.Success;
try {
// Get the share id and path
shareId = getShareIdFromHandle(handle);
ShareDetails details = nfsSess.getNFSServer().findShareDetails( shareId);
TreeConnection conn = getTreeConnection(nfsSess, shareId);
path = getPathForHandle(nfsSess, handle, conn);
// Check if the session has the required access to the shared filesystem
if (conn.hasWriteAccess() == false)
throw new AccessDeniedException();
// Get the disk interface from the disk driver
DiskInterface disk = (DiskInterface) conn.getSharedDevice().getInterface();
// Get the pre-operation details for the directory
FileInfo preInfo = disk.getFileInformation(nfsSess, conn, path);
// Build the full path string
StringBuffer str = new StringBuffer();
str.append(path);
if (path.endsWith("\\") == false)
str.append("\\");
str.append(fileName);
String delPath = str.toString();
// Check if the file exists
FileStatus existSts = disk.fileExists(nfsSess, conn, delPath);
if (existSts == FileStatus.NotExist) {
errorSts = NFS3.StatusCode.NoEnt;
} else if (existSts == FileStatus.DirectoryExists) {
errorSts = NFS3.StatusCode.IsDir;
} else {
// Get the file information for the file to be deleted
FileInfo finfo = disk.getFileInformation(nfsSess, conn, delPath);
// Delete the file
disk.deleteFile(nfsSess, conn, delPath);
// Remove the path from the cache
if (finfo != null) {
details.getFileIdCache().deletePath(finfo.getFileId());
nfsSess.getFileCache().removeFile(finfo.getFileId());
}
// Get the post-operation details for the directory
FileInfo postInfo = disk.getFileInformation(nfsSess, conn, path);
// Pack the response
rpc.buildResponseHeader();
rpc.packInt(NFS3.StatusCode.Success.intValue());
packPreOpAttr(nfsSess, preInfo, rpc);
packPostOpAttr(nfsSess, postInfo, shareId, rpc);
// Check if there are any file/directory change notify requests active
DiskDeviceContext diskCtx = (DiskDeviceContext) conn.getContext();
if (diskCtx.hasChangeHandler())
diskCtx.getChangeHandler().notifyFileChanged(NotifyAction.Removed, delPath);
}
}
catch (BadHandleException ex) {
errorSts = NFS3.StatusCode.BadHandle;
}
catch (StaleHandleException ex) {
errorSts = NFS3.StatusCode.Stale;
}
catch (SecurityException ex) {
errorSts = NFS3.StatusCode.Access;
}
catch (AccessDeniedException ex) {
errorSts = NFS3.StatusCode.Access;
}
catch (Exception ex) {
errorSts = NFS3.StatusCode.ServerFault;
// DEBUG
if (Debug.EnableError && nfsSess.hasDebug(NFSSrvSession.Dbg.ERROR))
nfsSess.debugPrintln("Remove Exception: " + ex.toString());
}
// Check for an error status
if (errorSts != NFS3.StatusCode.Success) {
// Pack the error response
rpc.buildErrorResponse(errorSts.intValue());
packWccData(rpc, null);
packWccData(rpc, null);
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.ERROR))
nfsSess.debugPrintln("Remove error=" + errorSts.getStatusString());
}
// Return the remove repsonse
rpc.setLength();
return rpc;
}
/**
* Process the delete directory request
*
* @param nfsSess NFSSrvSession
* @param rpc RpcPacket
* @return RpcPacket
*/
private final RpcPacket procRmDir(NFSSrvSession nfsSess, RpcPacket rpc) {
// Unpack the rmdir arguments
byte[] handle = new byte[NFS3.FileHandleSize];
rpc.unpackByteArrayWithLength(handle);
String dirName = rpc.unpackUTF8String();
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.DIRECTORY))
nfsSess.debugPrintln("RmDir request from " + rpc.getClientDetails() + ", name=" + dirName);
// Check if the handle is valid
if (NFSHandle.isValid(handle) == false) {
rpc.buildErrorResponse(NFS3.StatusCode.BadHandle.intValue());
return rpc;
}
int shareId = -1;
String path = null;
NFS3.StatusCode errorSts = NFS3.StatusCode.Success;
try {
// Get the share id and path
shareId = getShareIdFromHandle(handle);
ShareDetails details = nfsSess.getNFSServer().findShareDetails( shareId);
TreeConnection conn = getTreeConnection(nfsSess, shareId);
// Check if the session has the required access to the shared filesystem
if (conn.hasWriteAccess() == false)
throw new AccessDeniedException();
// Build the pre-operation part of the response
rpc.buildResponseHeader();
rpc.packInt(NFS3.StatusCode.Success.intValue());
// Pack the pre operation attributes for the parent directory
packPreOpAttr(nfsSess, conn, handle, rpc);
// Get the path to be removed
path = getPathForHandle(nfsSess, handle, conn);
// Get the disk interface from the disk driver
DiskInterface disk = (DiskInterface) conn.getSharedDevice().getInterface();
// Build the full path string
StringBuffer str = new StringBuffer();
str.append(path);
if (path.endsWith("\\") == false)
str.append("\\");
str.append(dirName);
String delPath = str.toString();
// Check if the file exists
FileStatus existSts = disk.fileExists(nfsSess, conn, delPath);
if (existSts == FileStatus.NotExist) {
errorSts = NFS3.StatusCode.NoEnt;
} else if (existSts == FileStatus.FileExists) {
errorSts = NFS3.StatusCode.NoEnt;
} else {
// Get the file information for the directory to be deleted
FileInfo finfo = disk.getFileInformation(nfsSess, conn, delPath);
// Delete the directory
disk.deleteDirectory(nfsSess, conn, delPath);
// Remove the path from the cache
if (finfo != null)
details.getFileIdCache().deletePath(finfo.getFileId());
// Pack the post operation attributes for the parent directory
packPostOpAttr(nfsSess, conn, handle, rpc);
// Check if there are any file/directory change notify requests active
DiskDeviceContext diskCtx = (DiskDeviceContext) conn.getContext();
if (diskCtx.hasChangeHandler())
diskCtx.getChangeHandler().notifyFileChanged(NotifyAction.Removed, delPath);
}
}
catch (BadHandleException ex) {
errorSts = NFS3.StatusCode.BadHandle;
}
catch (StaleHandleException ex) {
errorSts = NFS3.StatusCode.Stale;
}
catch (SecurityException ex) {
errorSts = NFS3.StatusCode.Access;
}
catch (AccessDeniedException ex) {
errorSts = NFS3.StatusCode.Access;
}
catch (java.nio.file.DirectoryNotEmptyException ex) {
errorSts = NFS3.StatusCode.NotEmpty;
}
catch (Exception ex) {
errorSts = NFS3.StatusCode.ServerFault;
// DEBUG
if (Debug.EnableError && nfsSess.hasDebug(NFSSrvSession.Dbg.ERROR))
nfsSess.debugPrintln("Rmdir Exception: " + ex.toString());
}
// Check if an error status is being returned
if (errorSts != NFS3.StatusCode.Success) {
// Pack the error response
rpc.buildErrorResponse(errorSts.intValue());
packWccData(rpc, null);
packWccData(rpc, null);
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.ERROR))
nfsSess.debugPrintln("Rmdir error=" + errorSts.getStatusString());
}
// Return the response
rpc.setLength();
return rpc;
}
/**
* Process the rename file request
*
* @param nfsSess NFSSrvSession
* @param rpc RpcPacket
* @return RpcPacket
*/
private final RpcPacket procRename(NFSSrvSession nfsSess, RpcPacket rpc) {
// Unpack the rename arguments
byte[] fromHandle = new byte[NFS3.FileHandleSize];
rpc.unpackByteArrayWithLength(fromHandle);
String fromName = rpc.unpackUTF8String();
byte[] toHandle = new byte[NFS3.FileHandleSize];
rpc.unpackByteArrayWithLength(toHandle);
String toName = rpc.unpackUTF8String();
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.FILE)) {
nfsSess.debugPrintln("Rename request from " + rpc.getClientDetails() + ", fromHandle=" + NFSHandle.asString(fromHandle) + ", fromname=" + fromName);
nfsSess.debugPrintln(" tohandle=" + NFSHandle.asString(toHandle) + ", toname=" + toName);
}
// Call the disk share driver to rename the file/directory
int shareId = -1;
String fromPath = null;
String toPath = null;
NFS3.StatusCode errorSts = NFS3.StatusCode.Success;
RpcPacket respRpc = null;
try {
// Get the share id and path
shareId = getShareIdFromHandle(fromHandle);
ShareDetails details = nfsSess.getNFSServer().findShareDetails( shareId);
TreeConnection conn = getTreeConnection(nfsSess, shareId);
// Check if the session has the required access to the shared filesystem
if (conn.hasWriteAccess() == false)
throw new AccessDeniedException();
// Get paths from the handles
fromPath = getPathForHandle(nfsSess, fromHandle, conn);
toPath = getPathForHandle(nfsSess, toHandle, conn);
// Build the full path string for the old name
StringBuffer str = new StringBuffer();
str.append(fromPath);
if (fromPath.endsWith("\\") == false)
str.append("\\");
str.append(fromName);
String oldPath = str.toString();
// Build the full path string for the new name
str.setLength(0);
str.append(toPath);
if (toPath.endsWith("\\") == false)
str.append("\\");
str.append(toName);
String newPath = str.toString();
// Get the disk interface from the disk driver
DiskInterface disk = (DiskInterface) conn.getSharedDevice().getInterface();
// Get the pre-operation details for the parent directories
FileInfo preFromInfo = disk.getFileInformation(nfsSess, conn, fromPath);
FileInfo preToInfo = null;
if (NFSHandle.unpackDirectoryId(fromHandle) == NFSHandle.unpackDirectoryId(toHandle))
preToInfo = preFromInfo;
else
preToInfo = disk.getFileInformation(nfsSess, conn, toPath);
// Check if the from path exists
FileStatus existSts = disk.fileExists(nfsSess, conn, oldPath);
if (existSts == FileStatus.NotExist) {
errorSts = NFS3.StatusCode.NoEnt;
} else {
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.FILE))
nfsSess.debugPrintln("Rename from=" + oldPath + ", to=" + newPath);
// Get the file details for the file/folder being renamed
FileInfo finfo = disk.getFileInformation(nfsSess, conn, oldPath);
// Check if the file being renamed is in the open file cache
if (finfo != null && finfo.isDirectory() == false) {
// Build a handle for the file
byte[] fHandle = getHandleForFile(nfsSess, fromHandle, conn, fromName);
// Get the open file
NetworkFile netFile = getOpenNetworkFileForHandle(nfsSess, fHandle, conn);
if (netFile != null) {
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.FILE))
nfsSess.debugPrintln(" Closing file " + oldPath + " before rename");
// Close the file
disk.closeFile(nfsSess, conn, netFile);
// Remove the file from the open file cache
NetworkFileCache fileCache = nfsSess.getFileCache();
synchronized (fileCache) {
// Remove the file from the open file cache
fileCache.removeFile(netFile.getFileId());
}
}
}
// Check if the target exists and it is a file, if so then delete it
if (disk.fileExists(nfsSess, conn, newPath) == FileStatus.FileExists) {
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.FILE))
nfsSess.debugPrintln(" Delete existing file before rename, newPath=" + newPath);
// Delete the existing target file
disk.deleteFile(nfsSess, conn, newPath);
}
// Rename the file/directory
disk.renameFile(nfsSess, conn, oldPath, newPath, null);
// Remove the original path from the cache
if (finfo != null && finfo.getFileId() != -1) {
details.getFileIdCache().deletePath(finfo.getFileId());
// Add an entry with the original file id mapped to the new path
//
// The file id from the file information for the new path may not be the same
// but the client will still be using the original handle to access the file.
details.getFileIdCache().addPath(finfo.getFileId(), newPath);
}
// Get the file id for the new file/directory
finfo = disk.getFileInformation(nfsSess, conn, newPath);
if (finfo != null)
details.getFileIdCache().addPath(finfo.getFileId(), newPath);
// Check if there are any file/directory change notify requests active
DiskDeviceContext diskCtx = (DiskDeviceContext) conn.getContext();
if (diskCtx.hasChangeHandler())
diskCtx.getChangeHandler().notifyRename(oldPath, newPath);
// Get the post-operation details for the parent directories
FileInfo postFromInfo = disk.getFileInformation(nfsSess, conn, fromPath);
FileInfo postToInfo = null;
if (NFSHandle.unpackDirectoryId(fromHandle) == NFSHandle.unpackDirectoryId(toHandle))
postToInfo = postFromInfo;
else
postToInfo = disk.getFileInformation(nfsSess, conn, toPath);
// Allocate a larger response RPC packet, associate with the request RPC
respRpc = nfsSess.getNFSServer().getPacketPool().allocateAssociatedPacket( RespSizeRename, rpc, -1);
// Pack the rename response
respRpc.buildResponseHeader();
respRpc.packInt(NFS3.StatusCode.Success.intValue());
packWccData(respRpc, preFromInfo);
packPostOpAttr(nfsSess, postFromInfo, shareId, respRpc);
packWccData(respRpc, preToInfo);
packPostOpAttr(nfsSess, postToInfo, shareId, respRpc);
}
}
catch (BadHandleException ex) {
errorSts = NFS3.StatusCode.BadHandle;
}
catch (StaleHandleException ex) {
errorSts = NFS3.StatusCode.Stale;
}
catch (SecurityException ex) {
errorSts = NFS3.StatusCode.Access;
}
catch (AccessDeniedException ex) {
errorSts = NFS3.StatusCode.Access;
}
catch (FileExistsException ex) {
errorSts = NFS3.StatusCode.Exist;
}
catch (Exception ex) {
errorSts = NFS3.StatusCode.ServerFault;
// DEBUG
if (Debug.EnableError && nfsSess.hasDebug(NFSSrvSession.Dbg.ERROR))
nfsSess.debugPrintln("Rename Exception: " + ex.toString());
}
// Check for an error status
if (errorSts != NFS3.StatusCode.Success) {
// Pack the error response
rpc.buildErrorResponse(errorSts.intValue());
// Pack the from dir WCC data
packWccData(rpc, null);
packWccData(rpc, null);
// Pack the to dir WCC data
packWccData(rpc, null);
packWccData(rpc, null);
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.ERROR))
nfsSess.debugPrintln("Rename error=" + errorSts.getStatusString());
}
// Return the rename response
respRpc.setLength();
return respRpc;
}
/**
* Process the create hard link request
*
* @param nfsSess NFSSrvSession
* @param rpc RpcPacket
* @return RpcPacket
*/
private final RpcPacket procLink(NFSSrvSession nfsSess, RpcPacket rpc) {
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.RXDATA))
nfsSess.debugPrintln("Link request from " + rpc.getClientDetails());
// Return an error status
rpc.buildErrorResponse(NFS3.StatusCode.Access.intValue());
packPostOpAttr(nfsSess, null, 0, rpc);
packWccData(rpc, null);
packWccData(rpc, null);
rpc.setLength();
return rpc;
}
/**
* Process the read directory request
*
* @param nfsSess NFSSrvSession
* @param rpc RpcPacket
* @return RpcPacket
*/
private final RpcPacket procReadDir(NFSSrvSession nfsSess, RpcPacket rpc) {
// Unpack the read directory arguments
byte[] handle = new byte[NFS3.FileHandleSize];
rpc.unpackByteArrayWithLength(handle);
long cookie = rpc.unpackLong();
long cookieVerf = rpc.unpackLong();
int maxCount = rpc.unpackInt();
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.SEARCH))
nfsSess.debugPrintln("ReadDir request from " + rpc.getClientDetails() + " handle=" + NFSHandle.asString(handle) +
", count=" + maxCount);
// Check if this is a share handle
int shareId = -1;
String path = null;
NFS3.StatusCode errorSts = NFS3.StatusCode.Success;
// Response RPC defaults to using the request buffer but will likley be allocated a seperate buffer
RpcPacket respRpc = null;
// Call the disk share driver to get the file information for the path
try {
// Get the share id and path
shareId = getShareIdFromHandle(handle);
ShareDetails details = nfsSess.getNFSServer().findShareDetails(shareId);
TreeConnection conn = getTreeConnection(nfsSess, shareId);
// Check if the session has the required access to the shared filesystem
if (conn.hasReadAccess() == false)
throw new AccessDeniedException();
// Get the disk interface from the disk driver
DiskInterface disk = (DiskInterface) conn.getSharedDevice().getInterface();
// Get the path from the handle
path = getPathForHandle(nfsSess, handle, conn);
// If the filesystem driver cannot convert file ids to relative paths we need to build a relative path for
// every file and sub-directory in the search
StringBuffer pathBuf = null;
int pathLen = 0;
FileIdCache fileCache = details.getFileIdCache();
if (details.hasFileIdSupport() == false) {
// Allocate the buffer for building the relative paths
pathBuf = new StringBuffer(256);
pathBuf.append(path);
if (path.endsWith("\\") == false)
pathBuf.append("\\");
// Set the length of the search path portion of the string
pathLen = pathBuf.length();
}
// Allocate a larger response RPC packet, associate with the request RPC
respRpc = nfsSess.getNFSServer().getPacketPool().allocateAssociatedPacket( maxCount, rpc, -1);
// Build the response header
respRpc.buildResponseHeader();
respRpc.packInt(NFS3.StatusCode.Success.intValue());
// Get the root directory information
FileInfo dinfo = disk.getFileInformation(nfsSess, conn, path);
packPostOpAttr(nfsSess, dinfo, shareId, respRpc);
// Generate the search path
String searchPath = generatePath(path, "*.*");
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.SEARCH))
nfsSess.debugPrintln("ReadDir searchPath=" + searchPath + ", cookie=" + cookie);
// Check if this is the start of a search
SearchContext search = null;
long searchId = -1;
if (cookie == 0) {
// Start a new search, allocate a search id
search = disk.startSearch(nfsSess, conn, searchPath, FileAttribute.Directory + FileAttribute.Normal, EnumSet.noneOf( SearchFlags.class));
// Allocate a search id for the new search
searchId = nfsSess.allocateSearchSlot(search);
// Set the cookie verifier
cookieVerf = dinfo.getModifyDateTime();
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.SEARCH))
nfsSess.debugPrintln("ReadDir allocated searchId=" + searchId);
} else {
// Check if the cookie verifier is valid, check reverse byte order
if (cookieVerf != 0L && cookieVerf != dinfo.getModifyDateTime() &&
Long.reverseBytes(cookieVerf) != dinfo.getModifyDateTime())
throw new BadCookieException();
// Retrieve the search from the active search cache
searchId = (cookie & COOKIE_SEARCHID_MASK) >> COOKIE_SEARCHID_SHIFT;
// Get the active search
search = nfsSess.getSearchContext((int) searchId);
// Check if the search has been closed, if so then restart the search
if (search == null) {
// Restart the search
search = disk.startSearch(nfsSess, conn, searchPath, FileAttribute.Directory + FileAttribute.Normal, EnumSet.noneOf( SearchFlags.class));
// Allocate a search id for the new search
searchId = nfsSess.allocateSearchSlot(search);
// Set the cookie verifier
cookieVerf = dinfo.getModifyDateTime();
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.SEARCH))
nfsSess.debugPrintln("ReadDir restarted search, searchId=" + searchId);
}
// Check if the search is at the required restart point
int resumeId = (int) (cookie & COOKIE_RESUMEID_MASK);
if (search.getResumeId() != resumeId)
search.restartAt(resumeId);
}
// Pack the cookie verifier
respRpc.packLong(cookieVerf);
// Check if the search id is valid
if (searchId == -1)
throw new Exception("Bad search id");
// Search id is masked into the top of the file index to make the resume cookie
long searchMask = ((long) searchId) << COOKIE_SEARCHID_SHIFT;
// Build the return file list
int entCnt = 0;
// Loop until the return buffer is full or there are no more files
FileInfo finfo = new FileInfo();
// Check if this is the start of a search, if so then add the '.' and '..' entries
if (cookie == 0) {
// Add the search directory details, the '.' directory
respRpc.packInt(Rpc.True);
respRpc.packLong(dinfo.getFileIdLong() + FILE_ID_OFFSET);
respRpc.packString(".");
respRpc.packLong(COOKIE_DOT_DIRECTORY);
// Get the file information for the parent directory
String parentPath = generatePath(path, "..");
FileInfo parentInfo = disk.getFileInformation(nfsSess, conn, parentPath);
// Add the parent of the search directory, the '..' directory
respRpc.packInt(Rpc.True);
respRpc.packLong(parentInfo.getFileIdLong() + FILE_ID_OFFSET);
respRpc.packString("..");
respRpc.packLong(COOKIE_DOTDOT_DIRECTORY);
// Update the entry count and current used reply buffer count
entCnt = 2;
}
// Add file/sub-directory entries until there are no more entries or the buffer is full
boolean replyFull = false;
while (entCnt++ < maxCount && replyFull == false && search.nextFileInfo(finfo)) {
// Check if the new file entry will fit into the reply buffer without exceeding the clients maximum
// reply size
int entryLen = READDIR_ENTRY_LENGTH + ((finfo.getFileName().length() + 3) & 0xFFFFFFFC);
if (entryLen > respRpc.getAvailableLength() ||
(respRpc.getPosition() + entryLen > maxCount)) {
replyFull = true;
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.SEARCH))
nfsSess.debugPrintln("ReadDir response full, restart at=" + finfo.getFileName() + ", resumeId=" + search.getResumeId());
search.restartAt(finfo);
break;
}
// Fill in the entry details
respRpc.packInt(Rpc.True);
respRpc.packLong(finfo.getFileIdLong() + FILE_ID_OFFSET);
respRpc.packUTF8String(finfo.getFileName());
respRpc.packLong(search.getResumeId() + searchMask);
// Check if the relative path should be added to the file id cache
if (details.hasFileIdSupport() == false && fileCache.findPath(finfo.getFileId()) == null) {
// Create a relative path for the current file/sub-directory and add to the file id cache
pathBuf.setLength(pathLen);
pathBuf.append(finfo.getFileName());
fileCache.addPath(finfo.getFileId(), pathBuf.toString());
}
}
// Indicate no more file entries in this response
respRpc.packInt(Rpc.False);
// Check if the search is complete
if (search.hasMoreFiles()) {
// Indicate that there are more files to be returned
respRpc.packInt(Rpc.False);
} else {
// Set the end of search flag
respRpc.packInt(Rpc.True);
// Close the search, release the search slot
search.closeSearch();
nfsSess.deallocateSearchSlot((int) searchId);
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.SEARCH))
nfsSess.debugPrintln("ReadDir released searchId=" + searchId);
}
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.SEARCH))
nfsSess.debugPrintln("ReadDir return entries=" + (entCnt - 1) + ", eof=" + search.hasMoreFiles());
}
catch (BadHandleException ex) {
errorSts = NFS3.StatusCode.BadHandle;
}
catch (BadCookieException ex) {
errorSts = NFS3.StatusCode.BadCookie;
}
catch (AccessDeniedException ex) {
errorSts = NFS3.StatusCode.Access;
}
catch (Exception ex) {
errorSts = NFS3.StatusCode.ServerFault;
// DEBUG
if (Debug.EnableError && nfsSess.hasDebug(NFSSrvSession.Dbg.ERROR)) {
nfsSess.debugPrintln("ReadDir Exception: " + ex.toString());
nfsSess.debugPrintln(ex);
}
}
// Check for an error status
if (errorSts != NFS3.StatusCode.Success) {
// Pack the error response
respRpc.buildErrorResponse(errorSts.intValue());
packPostOpAttr(nfsSess, null, shareId, respRpc);
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.ERROR))
nfsSess.debugPrintln("ReadDir error=" + errorSts.getStatusString());
}
// Return the read directory response
respRpc.setLength();
return respRpc;
}
/**
* Process the read directory plus request
*
* @param nfsSess NFSSrvSession
* @param rpc RpcPacket
* @return RpcPacket
*/
private final RpcPacket procReadDirPlus(NFSSrvSession nfsSess, RpcPacket rpc) {
// Unpack the read directory arguments
byte[] handle = new byte[NFS3.FileHandleSize];
rpc.unpackByteArrayWithLength(handle);
long cookie = rpc.unpackLong();
long cookieVerf = rpc.unpackLong();
int maxDir = rpc.unpackInt();
int maxCount = rpc.unpackInt();
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.SEARCH))
nfsSess.debugPrintln("ReadDir request from " + rpc.getClientDetails() + " handle=" + NFSHandle.asString(handle) +
", dir=" + maxDir + ", count=" + maxCount);
// Check if this is a share handle
int shareId = -1;
String path = null;
NFS3.StatusCode errorSts = NFS3.StatusCode.Success;
// Response RPC defaults to using the request buffer but will likley be allocated a seperate buffer
RpcPacket respRpc = null;
// Call the disk share driver to get the file information for the path
try {
// Get the share id and path
shareId = getShareIdFromHandle(handle);
ShareDetails details = nfsSess.getNFSServer().findShareDetails( shareId);
TreeConnection conn = getTreeConnection(nfsSess, shareId);
// Check if the session has the required access to the shared filesystem
if (conn.hasReadAccess() == false)
throw new AccessDeniedException();
// Get the disk interface from the disk driver
DiskInterface disk = (DiskInterface) conn.getSharedDevice().getInterface();
// Get the path from the handle
path = getPathForHandle(nfsSess, handle, conn);
// If the filesystem driver cannot convert file ids to relative paths we need to build a relative path for
// every file and sub-directory in the search
StringBuffer pathBuf = null;
int pathLen = 0;
FileIdCache fileCache = details.getFileIdCache();
if (details.hasFileIdSupport() == false) {
// Allocate the buffer for building the relative paths
pathBuf = new StringBuffer(256);
pathBuf.append(path);
if (path.endsWith("\\") == false)
pathBuf.append("\\");
// Set the length of the search path portion of the string
pathLen = pathBuf.length();
}
// Allocate a larger response RPC packet, associate with the request RPC
respRpc = nfsSess.getNFSServer().getPacketPool().allocateAssociatedPacket( maxCount, rpc, -1);
// Build the response header
respRpc.buildResponseHeader();
respRpc.packInt(NFS3.StatusCode.Success.intValue());
// Get the root directory information
FileInfo dinfo = disk.getFileInformation(nfsSess, conn, path);
packPostOpAttr(nfsSess, dinfo, shareId, respRpc);
// Generate the search path
String searchPath = generatePath(path, "*.*");
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.SEARCH))
nfsSess.debugPrintln("ReadDirPlus searchPath=" + searchPath + ", cookie=" + cookie);
// Check if this is the start of a search
SearchContext search = null;
long searchId = -1;
if (cookie == 0L) {
// Start a new search, allocate a search id
search = disk.startSearch(nfsSess, conn, searchPath, FileAttribute.Directory + FileAttribute.Normal, EnumSet.noneOf( SearchFlags.class));
// Allocate a search id for the new search
searchId = nfsSess.allocateSearchSlot(search);
// Set the cookie verifier
cookieVerf = dinfo.getModifyDateTime();
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.SEARCH))
nfsSess.debugPrintln("ReadDirPlus allocated searchId=" + searchId);
} else {
// Check if the cookie verifier is valid, check reverse byte order
if (cookieVerf != 0L && cookieVerf != dinfo.getModifyDateTime() &&
Long.reverseBytes(cookieVerf) != dinfo.getModifyDateTime()) {
nfsSess.debugPrintln("Bad cookie verifier, verf=0x" + Long.toHexString(cookieVerf) + ", modTime=0x" + Long.toHexString(dinfo.getModifyDateTime()));
throw new BadCookieException();
}
// Retrieve the search from the active search cache
searchId = (cookie & COOKIE_SEARCHID_MASK) >> COOKIE_SEARCHID_SHIFT;
// Get the active search
search = nfsSess.getSearchContext((int) searchId);
// Check if the search has been closed, if so then restart the search
if (search == null) {
// Restart the search
search = disk.startSearch(nfsSess, conn, searchPath, FileAttribute.Directory + FileAttribute.Normal, EnumSet.noneOf( SearchFlags.class));
// Allocate a search id for the new search
searchId = nfsSess.allocateSearchSlot(search);
// Set the cookie verifier
cookieVerf = dinfo.getModifyDateTime();
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.SEARCH))
nfsSess.debugPrintln("ReadDirPlus restarted search, searchId=" + searchId);
}
// Get the search resume id from the cookie
int resumeId = (int) (cookie & COOKIE_RESUMEID_MASK);
if (search != null && search.getResumeId() != resumeId)
search.restartAt(resumeId);
}
// Pack the cookie verifier
respRpc.packLong(cookieVerf);
// Check if the search id is valid
if (searchId == -1)
throw new Exception("Bad search id");
// Search id is masked into the top of the file index to make the resume cookie
long searchMask = ((long) searchId) << COOKIE_SEARCHID_SHIFT;
// Build the return file list
int entCnt = 0;
// Loop until the return buffer is full or there are no more files
FileInfo finfo = new FileInfo();
// Check if this is the start of a search, if so then add the '.' and '..' entries
if (cookie == 0) {
// Add the search directory details, the '.' directory
respRpc.packInt(Rpc.True);
respRpc.packLong(dinfo.getFileIdLong() + FILE_ID_OFFSET);
respRpc.packString(".");
respRpc.packLong(COOKIE_DOT_DIRECTORY);
// Fill in the file attributes
respRpc.packInt(Rpc.True);
packAttributes3(respRpc, dinfo, shareId);
// Fill in the file handle
packDirectoryHandle(shareId, dinfo.getFileId(), rpc);
// Get the file information for the parent directory
String parentPath = generatePath(path, "..");
FileInfo parentInfo = disk.getFileInformation(nfsSess, conn, parentPath);
// Add the parent of the search directory, the '..' directory
respRpc.packInt(Rpc.True);
respRpc.packLong(parentInfo.getFileIdLong() + FILE_ID_OFFSET);
respRpc.packString("..");
respRpc.packLong(COOKIE_DOTDOT_DIRECTORY);
// Fill in the file attributes
respRpc.packInt(Rpc.True);
packAttributes3(respRpc, parentInfo, shareId);
// Fill in the file handle
packDirectoryHandle(shareId, parentInfo.getFileId(), respRpc);
// Update the entry count and current used reply buffer count
entCnt = 2;
}
// Pack the file entries
boolean replyFull = false;
while (entCnt++ < maxDir && replyFull == false && search.nextFileInfo(finfo)) {
// Check if the new file entry will fit into the reply buffer without exceeding the clients maximum
// reply size
int entryLen = READDIRPLUS_ENTRY_LENGTH + ((finfo.getFileName().length() + 3) & 0xFFFFFFFC);
if (entryLen > respRpc.getAvailableLength() ||
(respRpc.getPosition() + entryLen > maxCount)) {
replyFull = true;
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.SEARCH))
nfsSess.debugPrintln("ReadDirPlus response full, restart at=" + finfo.getFileName() + ", resumeId=" + search.getResumeId());
search.restartAt(finfo);
break;
}
// Fill in the entry details
respRpc.packInt(Rpc.True);
respRpc.packLong(finfo.getFileIdLong() + FILE_ID_OFFSET);
respRpc.packUTF8String(finfo.getFileName());
respRpc.packLong(search.getResumeId() + searchMask);
// Fill in the file attributes
respRpc.packInt(Rpc.True);
packAttributes3(respRpc, finfo, shareId);
// Fill in the file or directory handle
if (finfo.isDirectory())
packDirectoryHandle(shareId, finfo.getFileId(), respRpc);
else
packFileHandle(shareId, dinfo.getFileId(), finfo.getFileId(), respRpc);
// Check if the relative path should be added to the file id cache
if (details.hasFileIdSupport() == false && fileCache.findPath(finfo.getFileId()) == null) {
// Create a relative path for the current file/sub-directory and add to the file id cache
pathBuf.setLength(pathLen);
pathBuf.append(finfo.getFileName());
fileCache.addPath(finfo.getFileId(), pathBuf.toString());
}
// Reset the file type
finfo.setFileType(FileType.RegularFile);
}
// Indicate that there are no more file entries in this response
respRpc.packInt(Rpc.False);
// Check if the search is complete
if (search.hasMoreFiles()) {
// Indicate that there are more files to be returned
respRpc.packInt(Rpc.False);
} else {
// Set the end of search flag
respRpc.packInt(Rpc.True);
// Close the search, release the search slot
search.closeSearch();
nfsSess.deallocateSearchSlot((int) searchId);
}
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.SEARCH))
nfsSess.debugPrintln("ReadDirPlus return entries=" + (entCnt - 1) + ", eof=" + (search.hasMoreFiles() ? false : true));
}
catch (BadHandleException ex) {
errorSts = NFS3.StatusCode.BadHandle;
}
catch (BadCookieException ex) {
errorSts = NFS3.StatusCode.BadCookie;
}
catch (AccessDeniedException ex) {
errorSts = NFS3.StatusCode.Access;
}
catch (Exception ex) {
errorSts = NFS3.StatusCode.ServerFault;
// DEBUG
if (Debug.EnableError && nfsSess.hasDebug(NFSSrvSession.Dbg.ERROR)) {
nfsSess.debugPrintln("ReadDirPlus Exception: " + ex.toString());
nfsSess.debugPrintln(ex);
}
}
// Check for an error status
if (errorSts != NFS3.StatusCode.Success) {
// Pack the error response
respRpc.buildErrorResponse(errorSts.intValue());
packPostOpAttr(nfsSess, null, shareId, respRpc);
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.ERROR))
nfsSess.debugPrintln("ReadDir error=" + errorSts.getStatusString());
}
// Return the read directory plus response
respRpc.setLength();
return respRpc;
}
/**
* Process the filesystem status request
*
* @param nfsSess NFSSrvSession
* @param rpc RpcPacket
* @return RpcPacket
*/
private final RpcPacket procFsStat(NFSSrvSession nfsSess, RpcPacket rpc) {
// Get the handle from the request
byte[] handle = new byte[NFS3.FileHandleSize];
rpc.unpackByteArrayWithLength(handle);
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.INFO))
nfsSess.debugPrintln("FsInfo request from " + rpc.getClientDetails());
// Call the disk share driver to get the disk size information
int shareId = -1;
NFS3.StatusCode errorSts = NFS3.StatusCode.Success;
try {
// Get the share id
shareId = getShareIdFromHandle(handle);
// Get the required disk driver/tree connection
TreeConnection conn = getTreeConnection(nfsSess, shareId);
// Check if the session has the required access to the shared filesystem
if (conn.hasReadAccess() == false)
throw new AccessDeniedException();
// Get the static disk information from the context, if available
DiskDeviceContext diskCtx = (DiskDeviceContext) conn.getContext();
SrvDiskInfo diskInfo = diskCtx.getDiskInformation();
// If we did not get valid disk information from the device context check
// if the driver implements the
// disk sizing interface
if (diskInfo == null)
diskInfo = new SrvDiskInfo();
// Get the disk interface from the disk driver
DiskInterface disk = (DiskInterface) conn.getSharedDevice().getInterface();
// Check if the driver implements the dynamic sizing interface to get
// realtime disk size information
if (disk instanceof DiskSizeInterface) {
// Get the dynamic disk sizing information
DiskSizeInterface sizeInterface = (DiskSizeInterface) disk;
sizeInterface.getDiskInformation(diskCtx, diskInfo);
}
// Calculate the disk size information
//int unitSize = diskInfo.getBlockSize() * diskInfo.getBlocksPerAllocationUnit();
// Get the file details for the root directory
String rootPath = getPathForHandle(nfsSess, handle, conn);
FileInfo rootInfo = disk.getFileInformation(nfsSess, conn, rootPath);
// Pack the response
rpc.buildResponseHeader();
rpc.packInt(NFS3.StatusCode.Success.intValue());
packPostOpAttr(nfsSess, rootInfo, shareId, rpc);
// Calculate the total/free disk space in bytes
long totalSize = diskInfo.getDiskSizeKb() * 1024L;
long freeSize = diskInfo.getDiskFreeSizeKb() * 1024L;
// Pack the total size, free size and space available to the user
rpc.packLong(totalSize);
rpc.packLong(freeSize);
rpc.packLong(freeSize);
// Total/free file slots in the file system, assume one file per 1Kb of
// space
long totalSlots = diskInfo.getDiskSizeKb();
long freeSlots = diskInfo.getDiskFreeSizeKb();
// Pack the total slots, free slots and user slots available
rpc.packLong(totalSlots);
rpc.packLong(freeSlots);
rpc.packLong(freeSlots);
// Pack the number of seconds for which the file system in not expected to
// change
rpc.packInt(0);
}
catch (SecurityException ex) {
errorSts = NFS3.StatusCode.Access;
}
catch (AccessDeniedException ex) {
errorSts = NFS3.StatusCode.Access;
}
catch (Exception ex) {
errorSts = NFS3.StatusCode.ServerFault;
}
// Check for an error status
if (errorSts != NFS3.StatusCode.Success) {
// Pack the error response
rpc.buildErrorResponse(errorSts.intValue());
packPostOpAttr(nfsSess, null, shareId, rpc);
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.ERROR))
nfsSess.debugPrintln("FsStat error=" + errorSts.getStatusString());
}
// Return the response
rpc.setLength();
return rpc;
}
/**
* Process the filesystem information request
*
* @param nfsSess NFSSrvSession
* @param rpc RpcPacket
* @return RpcPacket
*/
private final RpcPacket procFsInfo(NFSSrvSession nfsSess, RpcPacket rpc) {
// Get the handle from the request
byte[] handle = new byte[NFS3.FileHandleSize];
rpc.unpackByteArrayWithLength(handle);
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.INFO))
nfsSess.debugPrintln("[NFS] FsInfo request from " + rpc.getClientDetails());
// Check if the handle is valid
if (NFSHandle.isValid(handle) == false) {
// Return an error status
rpc.buildErrorResponse(NFS3.StatusCode.BadHandle.intValue());
return rpc;
}
// Build the response header
rpc.buildResponseHeader();
// Check if this is a share handle
int shareId = -1;
NFS3.StatusCode errorSts = NFS3.StatusCode.Success;
// Pack the filesystem information for the filesystem
try {
// Get the share id and path
shareId = getShareIdFromHandle(handle);
TreeConnection conn = getTreeConnection(nfsSess, shareId);
// Check if the session has the required access to the shared filesystem
if (conn.hasReadAccess() == false)
throw new AccessDeniedException();
// Pack the status code and post op attributes
rpc.packInt(NFS3.StatusCode.Success.intValue());
packPostOpAttr(nfsSess, conn, handle, rpc);
// Pack the filesystem information
//
// Maximum/preferred read request supported by the server
rpc.packInt(MaxReadSize);
rpc.packInt(PrefReadSize);
rpc.packInt(MultReadSize);
// Maximum/preferred write request supported by the server
rpc.packInt(MaxWriteSize);
rpc.packInt(PrefWriteSize);
rpc.packInt(MultWriteSize);
// Preferred READDIR request size
rpc.packInt(PrefReadDirSize);
// Maximum file size supported
rpc.packLong(MaxFileSize);
// Server time resolution, indicate to nearest second
rpc.packInt(1); // seconds
rpc.packInt(0); // nano-seconds
// Server properties, check if the filesystem supports symbolic links
int fileSysProps = NFS3.FileSysHomogeneuos + NFS3.FileSysCanSetTime;
if (conn.getInterface() instanceof SymbolicLinkInterface) {
// Check if symbolic links are enabled
SymbolicLinkInterface symLinkIface = (SymbolicLinkInterface) conn.getInterface();
if (symLinkIface.hasSymbolicLinksEnabled(nfsSess, conn))
fileSysProps += NFS3.FileSysSymLink;
}
rpc.packInt(fileSysProps);
}
catch (BadHandleException ex) {
errorSts = NFS3.StatusCode.BadHandle;
}
catch (StaleHandleException ex) {
errorSts = NFS3.StatusCode.Stale;
}
catch (Exception ex) {
errorSts = NFS3.StatusCode.ServerFault;
// DEBUG
if (Debug.EnableError && nfsSess.hasDebug(NFSSrvSession.Dbg.ERROR)) {
nfsSess.debugPrintln("FsInfo Exception: " + ex.toString());
nfsSess.debugPrintln(ex);
}
}
// Check for an error status
if (errorSts != NFS3.StatusCode.Success) {
rpc.buildErrorResponse(errorSts.intValue());
packPostOpAttr(nfsSess, null, shareId, rpc);
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.ERROR))
nfsSess.debugPrintln("FsInfo error=" + errorSts.getStatusString());
}
// Return the response
rpc.setLength();
return rpc;
}
/**
* Process the retrieve POSIX information request
*
* @param nfsSess NFSSrvSession
* @param rpc RpcPacket
* @return RpcPacket
*/
private final RpcPacket procPathConf(NFSSrvSession nfsSess, RpcPacket rpc) {
// Unpack the pathconf arguments
byte[] handle = new byte[NFS3.FileHandleSize];
rpc.unpackByteArrayWithLength(handle);
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.SEARCH))
nfsSess.debugPrintln("PathConf request from " + rpc.getClientDetails() + " handle=" + NFSHandle.asString(handle));
// Call the disk share driver to get the file information for the path
int shareId = -1;
String path = null;
NFS3.StatusCode errorSts = NFS3.StatusCode.Success;
try {
// Get the share id and path
shareId = getShareIdFromHandle(handle);
TreeConnection conn = getTreeConnection(nfsSess, shareId);
// Check if the session has the required access to the shared filesystem
if (conn.hasReadAccess() == false)
throw new AccessDeniedException();
// Get the path from the handle
path = getPathForHandle(nfsSess, handle, conn);
// Get the disk interface from the disk driver
DiskInterface disk = (DiskInterface) conn.getSharedDevice().getInterface();
// Check if the file/directory exists
if (disk.fileExists(nfsSess, conn, path) != FileStatus.NotExist) {
// Get file information for the path
FileInfo finfo = disk.getFileInformation(nfsSess, conn, path);
// Build the response
rpc.buildResponseHeader();
rpc.packInt(NFS3.StatusCode.Success.intValue());
packPostOpAttr(nfsSess, finfo, shareId, rpc);
// Pack the filesystem options
rpc.packInt(32767);
rpc.packInt(255);
rpc.packInt(Rpc.True); // truncate over size names
rpc.packInt(Rpc.True); // chown restricted
rpc.packInt(Rpc.True); // case insensitive
rpc.packInt(Rpc.True); // case preserving
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.SEARCH))
nfsSess.debugPrintln("Pathconf path=" + path + ", finfo=" + (finfo != null ? finfo.toString() : ""));
} else {
// File does not exist
errorSts = NFS3.StatusCode.NoEnt;
}
}
catch (BadHandleException ex) {
errorSts = NFS3.StatusCode.BadHandle;
}
catch (StaleHandleException ex) {
errorSts = NFS3.StatusCode.Stale;
}
catch (AccessDeniedException ex) {
errorSts = NFS3.StatusCode.Access;
}
catch (Exception ex) {
errorSts = NFS3.StatusCode.ServerFault;
// DEBUG
if (Debug.EnableError && nfsSess.hasDebug(NFSSrvSession.Dbg.ERROR))
nfsSess.debugPrintln("Pathconf Exception: " + ex.toString());
}
// Check if an error is being returned
if (errorSts != NFS3.StatusCode.Success) {
// Pack the error response
rpc.buildErrorResponse(errorSts.intValue());
packPostOpAttr(nfsSess, null, shareId, rpc);
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.ERROR))
nfsSess.debugPrintln("Pathconf error=" + errorSts.getStatusString());
}
// Return the path information response
rpc.setLength();
return rpc;
}
/**
* Commit request
*
* @param nfsSess NFSSrvSession
* @param rpc RpcPacket
* @return RpcPacket
*/
private final RpcPacket procCommit(NFSSrvSession nfsSess, RpcPacket rpc) {
// DEBUG
if (Debug.EnableInfo && nfsSess.hasDebug(NFSSrvSession.Dbg.FILEIO))
nfsSess.debugPrintln("Commit request from " + rpc.getClientDetails());
// Pack the response
rpc.buildResponseHeader();
rpc.packInt(NFS3.StatusCode.Success.intValue());
packWccData(rpc, null);
packPostOpAttr(nfsSess, null, 0, rpc);
// Pack the write verifier, indicates if the server has been restarted since the file write requests
rpc.packLong( nfsSess.getNFSServer().getWriteVerifier());
// Return the response
rpc.setLength();
return rpc;
}
/**
* Pack the NFS v3 file attributes structure using the file information
*
* @param rpc RpcPacket
* @param finfo FileInfo
* @param fileSysId int
*/
protected final void packAttributes3(RpcPacket rpc, FileInfo finfo, int fileSysId) {
// Pack the NFS format file attributes
if (finfo.isDirectory()) {
// Pack the directory information
rpc.packInt(NFS3.FileType.Directory.intValue());
if (finfo.hasMode())
rpc.packInt(finfo.getMode());
else
rpc.packInt(MODE_DIR_DEFAULT);
} else {
// Pack the file information
if (finfo.isFileType() == FileType.SymbolicLink)
rpc.packInt(NFS3.FileType.Link.intValue());
else
rpc.packInt(NFS3.FileType.Regular.intValue());
if (finfo.hasMode())
rpc.packInt(finfo.getMode());
else
rpc.packInt(MODE_FILE_DEFAULT);
}
// Set various Unix fields
rpc.packInt(1); // number of links
rpc.packInt(finfo.hasUid() ? finfo.getUid() : 0);
rpc.packInt(finfo.hasGid() ? finfo.getGid() : 0);
// Set the size for the file
if (finfo.isDirectory()) {
// Pack the directory size/allocation
rpc.packLong(512L);
rpc.packLong(1024L);
} else {
// Pack the file size/allocation
rpc.packLong(finfo.getSize());
if (finfo.getAllocationSize() != 0)
rpc.packLong(finfo.getAllocationSize());
else
rpc.packLong(finfo.getSize());
}
// Pack the rdev field
rpc.packInt(0); // specdata1
rpc.packInt(0); // specdata2
// Pack the file id
long fid = ((long) finfo.getFileId()) & 0x0FFFFFFFFL;
fid += FILE_ID_OFFSET;
rpc.packLong(fileSysId);
rpc.packLong(fid); // fid
// Pack the file times
if (finfo.hasAccessDateTime()) {
rpc.packInt((int) (finfo.getAccessDateTime() / 1000L));
rpc.packInt(0);
} else
rpc.packLong(0);
if (finfo.hasModifyDateTime()) {
rpc.packInt((int) (finfo.getModifyDateTime() / 1000L));
rpc.packInt(0);
} else
rpc.packLong(0);
if (finfo.hasChangeDateTime()) {
rpc.packInt((int) (finfo.getChangeDateTime() / 1000L));
rpc.packInt(0);
} else
rpc.packLong(0);
}
/**
* Pack a share handle
*
* @param shareName String
* @param rpc RpcPacket
*/
protected final void packShareHandle(String shareName, RpcPacket rpc) {
// Indicate that a handle follows, pack the handle
rpc.packInt(Rpc.True);
NFSHandle.packShareHandle(shareName, rpc, NFS3.FileHandleSize);
}
/**
* Pack a directory handle
*
* @param shareId int
* @param dirId int
* @param rpc RpcPacket
*/
protected final void packDirectoryHandle(int shareId, int dirId, RpcPacket rpc) {
// Indicate that a handle follows, pack the handle
rpc.packInt(Rpc.True);
NFSHandle.packDirectoryHandle(shareId, dirId, rpc, NFS3.FileHandleSize);
}
/**
* Pack a directory handle
*
* @param shareId int
* @param dirId int
* @param fileId int
* @param rpc RpcPacket
*/
protected final void packFileHandle(int shareId, int dirId, int fileId, RpcPacket rpc) {
// Indicate that a handle follows, pack the handle
rpc.packInt(Rpc.True);
NFSHandle.packFileHandle(shareId, dirId, fileId, rpc, NFS3.FileHandleSize);
}
/**
* Get the share id from the specified handle
*
* @param handle byte[]
* @return int
* @exception BadHandleException Bad NFS handle
*/
protected final int getShareIdFromHandle(byte[] handle)
throws BadHandleException {
// Check if this is a share handle
int shareId = NFSHandle.unpackShareId(handle);
// Check if the share id is valid
if (shareId == -1)
throw new BadHandleException();
// Return the share id
return shareId;
}
/**
* Get the path for the specified handle
*
* @param nfsSess NFSSrvSession
* @param handle byte[]
* @param tree TreeConnection
* @return String
* @exception BadHandleException Bad NFS handle
* @exception StaleHandleException Stale NFS handle
*/
protected final String getPathForHandle(NFSSrvSession nfsSess, byte[] handle, TreeConnection tree)
throws BadHandleException, StaleHandleException {
// Get the share details via the share id hash
ShareDetails details = nfsSess.getNFSServer().findShareDetails(getShareIdFromHandle(handle));
// Check if this is a share handle
String path = null;
int dirId = -1;
int fileId = -1;
if (NFSHandle.isShareHandle(handle)) {
// Use the root path
path = "\\";
} else if (NFSHandle.isDirectoryHandle(handle)) {
// Get the directory id from the handle and get the associated path
dirId = NFSHandle.unpackDirectoryId(handle);
path = details.getFileIdCache().findPath(dirId);
} else if (NFSHandle.isFileHandle(handle)) {
// Get the file id from the handle and get the associated path
fileId = NFSHandle.unpackFileId(handle);
path = details.getFileIdCache().findPath(fileId);
} else
throw new BadHandleException();
// Check if the path is valid. The path may not be valid if the server has
// been restarted as the file id cache will not contain the required path.
if (path == null) {
// Check if the filesystem driver supports converting file ids to paths
if (details.hasFileIdSupport()) {
// Get the file and directory ids from the handle
dirId = NFSHandle.unpackDirectoryId(handle);
fileId = NFSHandle.unpackFileId(handle);
// If the file id is not valid the handle is to a directory, use the
// directory id as the file id
if (fileId == -1) {
fileId = dirId;
dirId = -1;
}
// Convert the file id to a path
FileIdInterface fileIdInterface = (FileIdInterface) tree.getInterface();
try {
// Convert the file id to a path
path = fileIdInterface.buildPathForFileId(nfsSess, tree, dirId, fileId);
// Add the path to the cache
details.getFileIdCache().addPath(fileId, path);
}
catch (FileNotFoundException ex) {
}
} else if (NFSHandle.isDirectoryHandle(handle) && dirId == 0) {
// Path is the root directory
path = "\\";
// Add an entry to the cache
details.getFileIdCache().addPath(dirId, path);
}
}
// Check if the path is valid, filesystem driver may not support converting
// file ids to paths or the file/directory may have been deleted.
if (path == null)
throw new StaleHandleException();
// Return the path
return path;
}
/**
* Get the handle for the specified directory handle and file name
*
* @param nfsSess NFSSrvSession
* @param handle byte[]
* @param tree TreeConnection
* @param fname String
* @return byte[]
* @exception BadHandleException Bad NFS handle
* @exception StaleHandleException Stale NFS handle
*/
protected final byte[] getHandleForFile(NFSSrvSession nfsSess, byte[] handle, TreeConnection tree, String fname)
throws BadHandleException, StaleHandleException {
// Get the share details via the share id hash
int shareId = getShareIdFromHandle(handle);
ShareDetails details = nfsSess.getNFSServer().findShareDetails( shareId);
// Check if this is a share handle
String path = null;
int dirId = -1;
int fileId = -1;
if (NFSHandle.isDirectoryHandle(handle)) {
// Get the directory id from the handle and get the associated path
dirId = NFSHandle.unpackDirectoryId(handle);
path = details.getFileIdCache().findPath(dirId);
} else if (NFSHandle.isShareHandle(handle)) {
// Use the root path
dirId = 0;
path = "\\";
} else
throw new BadHandleException();
byte[] fHandle = null;
try {
// Get the disk interface from the disk driver
DiskInterface disk = (DiskInterface) tree.getSharedDevice().getInterface();
// Build the path to the file
String filePath = generatePath(path, fname);
// Check if the file/directory exists
FileStatus fsts = disk.fileExists(nfsSess, tree, filePath);
if (fsts == FileStatus.FileExists || fsts == FileStatus.DirectoryExists) {
// Get file information for the path
FileInfo finfo = disk.getFileInformation(nfsSess, tree, filePath);
if (finfo != null) {
// Get the file id
fileId = finfo.getFileId();
// Allocate and build the file handle
fHandle = new byte[NFS3.FileHandleSize];
if (finfo.isDirectory())
NFSHandle.packDirectoryHandle(shareId, dirId, fHandle);
else
NFSHandle.packFileHandle(shareId, dirId, fileId, fHandle);
}
}
}
catch (Exception ex) {
}
// Check if the file handle is valid
if (fHandle == null)
throw new BadHandleException();
// Return the file handle
return fHandle;
}
/**
* Get the file id from the specified handle
*
* @param handle byte[]
* @return String
* @exception BadHandleException Bad NFS handle
*/
protected final int getFileIdForHandle(byte[] handle)
throws BadHandleException {
// Check the handle type
int fileId = -1;
if (NFSHandle.isShareHandle(handle)) {
// Root file id
fileId = 0;
} else if (NFSHandle.isDirectoryHandle(handle)) {
// Get the directory id from the handle
fileId = NFSHandle.unpackDirectoryId(handle);
} else if (NFSHandle.isFileHandle(handle)) {
// Get the file id from the handle
fileId = NFSHandle.unpackFileId(handle);
}
// Check if the file id is valid
if (fileId == -1)
throw new BadHandleException();
// Return the file id
return fileId;
}
/**
* Find, or open, the required network file using the file handle
*
* @param nfsSess NFSSrvSession
* @param handle byte[]
* @param conn TreeConnection
* @param readOnly boolean
* @return NetworkFile
* @exception BadHandleException If the handle is not valid
* @exception StaleHandleException If the file id cannot be converted to a path
*/
protected final NetworkFile getNetworkFileForHandle(NFSSrvSession nfsSess, byte[] handle, TreeConnection conn, boolean readOnly)
throws BadHandleException, StaleHandleException {
// Check if the handle is a file handle
if (NFSHandle.isFileHandle(handle) == false)
throw new BadHandleException("Not a file handle");
// Get the file id from the handle
int fileId = getFileIdForHandle(handle);
// Get the per session network file cache, use this to synchronize
NetworkFileCache fileCache = nfsSess.getFileCache();
NetworkFile file = null;
synchronized (fileCache) {
// Check the file cache, file may already be open
file = fileCache.findFile(fileId, nfsSess);
if (file == null || (file.getGrantedAccess() == NetworkFile.Access.READ_ONLY && readOnly == false)) {
// Get the path for the file
String path = getPathForHandle(nfsSess, handle, conn);
if (path == null)
throw new StaleHandleException();
try {
// Close the existing file, if switching from read-only to writeable access
if (file != null)
file.closeFile();
// Get the disk interface from the connection
DiskInterface disk = (DiskInterface) conn.getSharedDevice().getInterface();
// Open the network file
FileOpenParams params = new FileOpenParams(path, FileAction.OpenIfExists, ((readOnly) ? (AccessMode.ReadOnly) : (AccessMode.ReadWrite)), 0, 0);
file = disk.openFile(nfsSess, conn, params);
// Add the file to the active file cache
if (file != null)
fileCache.addFile(file, conn, nfsSess);
}
catch (AccessDeniedException ex) {
if (nfsSess.hasDebug( NFSSrvSession.Dbg.FILE))
Debug.println(ex);
}
catch (Exception ex) {
Debug.println(ex);
}
} else if (file.getGrantedAccess() == NetworkFile.Access.READ_ONLY && readOnly == false) {
}
}
// Return the network file
return file;
}
/**
* Find the required network file using the file handle, or return null if the file has not been opened
*
* @param nfsSess NFSSrvSession
* @param handle byte[]
* @param conn TreeConnection
* @return NetworkFile
* @exception BadHandleException If the handle is not valid
* @exception StaleHandleException If the file id cannot be converted to a path
*/
protected final NetworkFile getOpenNetworkFileForHandle(NFSSrvSession nfsSess, byte[] handle, TreeConnection conn)
throws BadHandleException, StaleHandleException {
// Check if the handle is a file handle
if (NFSHandle.isFileHandle(handle) == false)
return null;
// Get the file id from the handle
int fileId = getFileIdForHandle(handle);
// Get the per session network file cache, use this to synchronize
NetworkFileCache fileCache = nfsSess.getFileCache();
NetworkFile file = null;
synchronized (fileCache) {
// Check the file cache, file may already be open
file = fileCache.findFile(fileId, nfsSess);
}
// Return the network file
return file;
}
/**
* Return the tree connection for the specified share index
*
* @param nfsSess NFSSrvSession
* @param shareId int
* @return TreeConnection
* @exception BadHandleException If the handle is not valid
*/
protected final TreeConnection getTreeConnection(NFSSrvSession nfsSess, int shareId) throws BadHandleException {
// Get the required tree connection from the session
TreeConnection conn = nfsSess.findConnection(shareId);
if (conn == null) {
// Get a template tree connection from the global list
TreeConnection template = nfsSess.getNFSServer().findConnection(shareId);
if (template == null) {
// Check if any new shares have been added and try to find the required connection again
if (nfsSess.getNFSServer().checkForNewShares() > 0)
template = nfsSess.getNFSServer().findConnection(shareId);
}
// Matching tree connection not found, handle is not valid
if (template == null)
throw new BadHandleException();
// Check if there is an access control manager configured
if (nfsSess.getNFSServer().hasAccessControlManager()) {
// Check if the session has access to the shared filesystem
AccessControlManager aclMgr = nfsSess.getNFSServer().getAccessControlManager();
int sharePerm = aclMgr.checkAccessControl(nfsSess, template.getSharedDevice());
if (sharePerm == AccessControl.NoAccess) {
// Session does not have access to the shared filesystem, mount should have failed or permissions
// may have changed.
throw new BadHandleException();
}
else if (sharePerm == AccessControl.Default)
sharePerm = AccessControl.ReadWrite;
// Create a new tree connection from the template
conn = new TreeConnection(template.getSharedDevice());
conn.setPermission(sharePerm);
// Add the tree connection to the active list for the session
nfsSess.addConnection(conn);
} else {
// No access control manager, allow full access to the filesystem
conn = new TreeConnection(template.getSharedDevice());
conn.setPermission(ISMBAuthenticator.ShareStatus.WRITEABLE);
// Add the tree connection to the active list for the session
nfsSess.addConnection(conn);
}
}
// Return the tree connection
return conn;
}
/**
* Pack a weak cache consistency structure
*
* @param rpc RpcPacket
* @param finfo FileInfo
*/
protected final void packWccData(RpcPacket rpc, FileInfo finfo) {
// Pack the weak cache consistency data
if (finfo != null) {
// Indicate that data follows
rpc.packInt(Rpc.True);
// Pack the file size
if (finfo.isDirectory())
rpc.packLong(512L);
else
rpc.packLong(finfo.getSize());
// Pack the file times
if (finfo.hasModifyDateTime()) {
rpc.packInt((int) (finfo.getModifyDateTime() / 1000L));
rpc.packInt(0);
} else
rpc.packLong(0);
if (finfo.hasChangeDateTime()) {
rpc.packInt((int) (finfo.getChangeDateTime() / 1000L));
rpc.packInt(0);
} else
rpc.packLong(0);
} else
rpc.packInt(Rpc.False);
}
/**
* Check if a file path contains any directory components
*
* @param fpath String
* @return boolean
*/
protected final boolean pathHasDirectories(String fpath) {
// Check if the file path is valid
if (fpath == null || fpath.length() == 0)
return false;
// Check if the file path starts with a directory component
if (fpath.startsWith("\\") || fpath.startsWith("/") || fpath.startsWith(".."))
return true;
// Check if the file path contains directory components
if (fpath.indexOf("\\") != -1 || fpath.indexOf("/") != -1)
return true;
// File path does not have any directory components
return false;
}
/**
* Pack the pre operation weak cache consistency data for the specified
* file/directory
*
* @param nfsSess NFSSrvSession
* @param finfo FileInfo
* @param rpc RpcPacket
*/
protected final void packPreOpAttr(NFSSrvSession nfsSess, FileInfo finfo, RpcPacket rpc) {
// Pack the file information
if (finfo != null)
packWccData(rpc, finfo);
else
rpc.packInt(Rpc.False);
}
/**
* Pack the pre operation weak cache consistency data for the specified
* file/directory
*
* @param nfsSess NFSSrvSession
* @param conn TreeConnection
* @param fhandle byte[]
* @param rpc RpcPacket
* @exception BadHandleException If the handle is not valid
* @exception StaleHandleException If the file id cannot be converted to a path
* @exception InvalidDeviceInterfaceException Device interface not valid
* @exception IOException I/O error
*/
protected final void packPreOpAttr(NFSSrvSession nfsSess, TreeConnection conn, byte[] fhandle, RpcPacket rpc)
throws BadHandleException, StaleHandleException, InvalidDeviceInterfaceException, IOException {
// Get the path
String path = getPathForHandle(nfsSess, fhandle, conn);
// Get the disk interface from the disk driver
DiskInterface disk = (DiskInterface) conn.getSharedDevice().getInterface();
// Get the file information for the path
FileInfo finfo = disk.getFileInformation(nfsSess, conn, path);
// Pack the file information
packWccData(rpc, finfo);
}
/**
* Pack the post operation weak cache consistency data for the specified
* file/directory
*
* @param nfsSess NFSSrvSession
* @param conn TreeConnection
* @param fhandle byte[]
* @param rpc RpcPacket
* @exception BadHandleException If the handle is not valid
* @exception StaleHandleException If the file id cannot be converted to a path
* @exception InvalidDeviceInterfaceException Device interface not valid
* @exception IOException I/O error
*/
protected final void packPostOpAttr(NFSSrvSession nfsSess, TreeConnection conn, byte[] fhandle, RpcPacket rpc)
throws BadHandleException, StaleHandleException, InvalidDeviceInterfaceException, IOException {
// Get the path
String path = getPathForHandle(nfsSess, fhandle, conn);
// Get the disk interface from the disk driver
DiskInterface disk = (DiskInterface) conn.getSharedDevice().getInterface();
// Get the file information for the path
FileInfo finfo = disk.getFileInformation(nfsSess, conn, path);
// Pack the file information
if (finfo != null) {
rpc.packInt(Rpc.True);
packAttributes3(rpc, finfo, getShareIdFromHandle(fhandle));
} else
rpc.packInt(Rpc.False);
}
/**
* Pack the post operation weak cache consistency data for the specified
* file/directory
*
* @param nfsSess NFSSrvSession
* @param finfo FileInfo
* @param fileSysId int
* @param rpc RpcPacket
*/
protected final void packPostOpAttr(NFSSrvSession nfsSess, FileInfo finfo, int fileSysId, RpcPacket rpc) {
// Pack the file information
if (finfo != null) {
// Pack the post operation attributes
rpc.packInt(Rpc.True);
packAttributes3(rpc, finfo, fileSysId);
} else
rpc.packInt(Rpc.False);
}
/**
* Generate a share relative path from the directory path and argument path.
* The argument path may contain the value '..' in which case the directory
* path will be stipped back one level.
*
* @param dirPath String
* @param argPath String
* @return String
*/
protected final String generatePath(String dirPath, String argPath) {
// If the argument path is '..', if so then strip the directory path back a
// level
StringBuffer pathBuf = new StringBuffer();
if (argPath.equals("..")) {
// Split the path into component directories
String[] dirs = FileName.splitAllPaths(dirPath);
// Rebuild the path without the last directory
pathBuf.append("\\");
int dirCnt = dirs.length - 1;
if (dirCnt > 0) {
// Add the paths
for (int i = 0; i < dirCnt; i++) {
pathBuf.append(dirs[i]);
pathBuf.append("\\");
}
}
// Remove the trailing slash
if (pathBuf.length() > 1)
pathBuf.setLength(pathBuf.length() - 1);
} else {
// Add the share relative path
pathBuf.append(dirPath);
if (dirPath.endsWith("\\") == false)
pathBuf.append("\\");
if (argPath.equals(".") == false)
pathBuf.append(argPath);
}
// Return the path
return pathBuf.toString();
}
}