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https://github.com/Alfresco/alfresco-community-repo.git
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e1e6508fec
git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@2005 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
658 lines
20 KiB
Java
658 lines
20 KiB
Java
/*
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* Copyright (C) 2005 Alfresco, Inc.
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*
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* Licensed under the Mozilla Public License version 1.1
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* with a permitted attribution clause. You may obtain a
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* copy of the License at
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*
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* http://www.alfresco.org/legal/license.txt
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
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* either express or implied. See the License for the specific
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* language governing permissions and limitations under the
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* License.
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*/
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package org.alfresco.filesys.smb.server;
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import java.io.IOException;
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import org.alfresco.filesys.server.filesys.NetworkFile;
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import org.alfresco.filesys.server.filesys.TooManyFilesException;
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import org.alfresco.filesys.server.filesys.TreeConnection;
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import org.alfresco.filesys.smb.PacketType;
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import org.alfresco.filesys.smb.SMBStatus;
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import org.alfresco.filesys.smb.TransactionNames;
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import org.alfresco.filesys.smb.dcerpc.DCEPipeType;
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import org.alfresco.filesys.smb.dcerpc.server.DCEPipeFile;
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import org.alfresco.filesys.smb.dcerpc.server.DCEPipeHandler;
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import org.alfresco.filesys.util.DataBuffer;
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import org.alfresco.filesys.util.DataPacker;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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/**
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* <p>
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* The IPCHandler class processes requests made on the IPC$ remote admin pipe. The code is shared
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* amongst different SMB protocol handlers.
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*/
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class IPCHandler
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{
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// Debug logging
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private static final Log logger = LogFactory.getLog("org.alfresco.smb.protocol");
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/**
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* Process a request made on the IPC$ remote admin named pipe.
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*
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* @param sess SMBSrvSession
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* @param outPkt SMBSrvPacket
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* @exception java.io.IOException If an I/O error occurs
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* @exception SMBSrvException If an SMB protocol error occurs
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*/
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public static void processIPCRequest(SMBSrvSession sess, SMBSrvPacket outPkt) throws java.io.IOException,
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SMBSrvException
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{
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// Get the received packet from the session and verify that the connection is valid
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SMBSrvPacket smbPkt = sess.getReceivePacket();
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// Get the tree id from the received packet and validate that it is a valid
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// connection id.
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int treeId = smbPkt.getTreeId();
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TreeConnection conn = sess.findConnection(treeId);
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if (conn == null)
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{
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sess.sendErrorResponseSMB(SMBStatus.DOSInvalidDrive, SMBStatus.ErrDos);
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return;
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}
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// Debug
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if (logger.isDebugEnabled() && sess.hasDebug(SMBSrvSession.DBG_IPC))
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logger.debug("IPC$ Request [" + treeId + "] - cmd = " + smbPkt.getPacketTypeString());
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// Determine the SMB command
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switch (smbPkt.getCommand())
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{
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// Open file request
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case PacketType.OpenAndX:
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case PacketType.OpenFile:
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procIPCFileOpen(sess, smbPkt, outPkt);
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break;
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// Read file request
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case PacketType.ReadFile:
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procIPCFileRead(sess, smbPkt, outPkt);
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break;
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// Read AndX file request
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case PacketType.ReadAndX:
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procIPCFileReadAndX(sess, smbPkt, outPkt);
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break;
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// Write file request
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case PacketType.WriteFile:
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procIPCFileWrite(sess, smbPkt, outPkt);
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break;
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// Write AndX file request
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case PacketType.WriteAndX:
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procIPCFileWriteAndX(sess, smbPkt, outPkt);
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break;
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// Close file request
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case PacketType.CloseFile:
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procIPCFileClose(sess, smbPkt, outPkt);
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break;
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// NT create andX request
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case PacketType.NTCreateAndX:
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procNTCreateAndX(sess, smbPkt, outPkt);
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break;
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// Default, respond with an unsupported function error.
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default:
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sess.sendErrorResponseSMB(SMBStatus.SRVUnrecognizedCommand, SMBStatus.ErrSrv);
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break;
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}
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}
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/**
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* Process an IPC$ transaction request.
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*
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* @param tbuf SrvTransactBuffer
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* @param sess SMBSrvSession
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* @param outPkt SMBSrvPacket
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*/
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protected static void procTransaction(SrvTransactBuffer tbuf, SMBSrvSession sess, SMBSrvPacket outPkt)
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throws IOException, SMBSrvException
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{
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// Debug
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if (logger.isDebugEnabled() && sess.hasDebug(SMBSrvSession.DBG_IPC))
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logger.debug("IPC$ Transaction pipe=" + tbuf.getName() + ", subCmd="
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+ NamedPipeTransaction.getSubCommand(tbuf.getFunction()));
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// Call the required transaction handler
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if (tbuf.getName().compareTo(TransactionNames.PipeLanman) == 0)
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{
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// Call the \PIPE\LANMAN transaction handler to process the request
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if (PipeLanmanHandler.processRequest(tbuf, sess, outPkt))
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return;
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}
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// Process the pipe command
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switch (tbuf.getFunction())
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{
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// Set named pipe handle state
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case NamedPipeTransaction.SetNmPHandState:
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procSetNamedPipeHandleState(sess, tbuf, outPkt);
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break;
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// Named pipe transation request, pass the request to the DCE/RPC handler
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case NamedPipeTransaction.TransactNmPipe:
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DCERPCHandler.processDCERPCRequest(sess, tbuf, outPkt);
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break;
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// Unknown command
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default:
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sess.sendErrorResponseSMB(SMBStatus.SRVUnrecognizedCommand, SMBStatus.ErrSrv);
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break;
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}
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}
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/**
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* Process a special IPC$ file open request.
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*
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* @param sess SMBSrvSession
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* @param rxPkt SMBSrvPacket
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* @param outPkt SMBSrvPacket
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*/
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protected static void procIPCFileOpen(SMBSrvSession sess, SMBSrvPacket rxPkt, SMBSrvPacket outPkt)
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throws IOException, SMBSrvException
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{
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// Get the data bytes position and length
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int dataPos = rxPkt.getByteOffset();
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int dataLen = rxPkt.getByteCount();
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byte[] buf = rxPkt.getBuffer();
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// Extract the filename string
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String fileName = DataPacker.getString(buf, dataPos, dataLen);
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// Debug
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if (logger.isDebugEnabled() && sess.hasDebug(SMBSrvSession.DBG_IPC))
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logger.debug("IPC$ Open file = " + fileName);
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// Check if the requested IPC$ file is valid
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int pipeType = DCEPipeType.getNameAsType(fileName);
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if (pipeType == -1)
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{
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sess.sendErrorResponseSMB(SMBStatus.DOSFileNotFound, SMBStatus.ErrDos);
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return;
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}
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// Get the tree connection details
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int treeId = rxPkt.getTreeId();
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TreeConnection conn = sess.findConnection(treeId);
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if (conn == null)
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{
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sess.sendErrorResponseSMB(SMBStatus.SRVInvalidTID, SMBStatus.ErrSrv);
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return;
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}
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// Create a network file for the special pipe
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DCEPipeFile pipeFile = new DCEPipeFile(pipeType);
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pipeFile.setGrantedAccess(NetworkFile.READWRITE);
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// Add the file to the list of open files for this tree connection
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int fid = -1;
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try
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{
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fid = conn.addFile(pipeFile, sess);
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}
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catch (TooManyFilesException ex)
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{
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// Too many files are open on this connection, cannot open any more files.
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sess.sendErrorResponseSMB(SMBStatus.DOSTooManyOpenFiles, SMBStatus.ErrDos);
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return;
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}
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// Build the open file response
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outPkt.setParameterCount(15);
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outPkt.setAndXCommand(0xFF);
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outPkt.setParameter(1, 0); // AndX offset
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outPkt.setParameter(2, fid);
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outPkt.setParameter(3, 0); // file attributes
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outPkt.setParameter(4, 0); // last write time
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outPkt.setParameter(5, 0); // last write date
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outPkt.setParameterLong(6, 0); // file size
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outPkt.setParameter(8, 0);
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outPkt.setParameter(9, 0);
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outPkt.setParameter(10, 0); // named pipe state
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outPkt.setParameter(11, 0);
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outPkt.setParameter(12, 0); // server FID (long)
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outPkt.setParameter(13, 0);
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outPkt.setParameter(14, 0);
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outPkt.setByteCount(0);
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// Send the response packet
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sess.sendResponseSMB(outPkt);
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}
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/**
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* Process an IPC pipe file read request
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*
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* @param sess SMBSrvSession
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* @param rxPkt SMBSrvPacket
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* @param outPkt SMBSrvPacket
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*/
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protected static void procIPCFileRead(SMBSrvSession sess, SMBSrvPacket rxPkt, SMBSrvPacket outPkt)
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throws IOException, SMBSrvException
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{
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// Check if the received packet is a valid read file request
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if (rxPkt.checkPacketIsValid(5, 0) == false)
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{
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// Invalid request
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sess.sendErrorResponseSMB(SMBStatus.SRVUnrecognizedCommand, SMBStatus.ErrSrv);
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return;
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}
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// Debug
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if (logger.isDebugEnabled() && sess.hasDebug(SMBSrvSession.DBG_IPC))
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logger.debug("IPC$ File Read");
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// Pass the read request the DCE/RPC handler
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DCERPCHandler.processDCERPCRead(sess, rxPkt, outPkt);
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}
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/**
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* Process an IPC pipe file read andX request
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*
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* @param sess SMBSrvSession
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* @param rxPkt SMBSrvPacket
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* @param outPkt SMBSrvPacket
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*/
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protected static void procIPCFileReadAndX(SMBSrvSession sess, SMBSrvPacket rxPkt, SMBSrvPacket outPkt)
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throws IOException, SMBSrvException
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{
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// Check if the received packet is a valid read andX file request
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if (rxPkt.checkPacketIsValid(10, 0) == false)
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{
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// Invalid request
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sess.sendErrorResponseSMB(SMBStatus.SRVUnrecognizedCommand, SMBStatus.ErrSrv);
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return;
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}
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// Debug
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if (logger.isDebugEnabled() && sess.hasDebug(SMBSrvSession.DBG_IPC))
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logger.debug("IPC$ File Read AndX");
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// Pass the read request the DCE/RPC handler
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DCERPCHandler.processDCERPCRead(sess, rxPkt, outPkt);
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}
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/**
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* Process an IPC pipe file write request
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*
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* @param sess SMBSrvSession
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* @param rxPkt SMBSrvPacket
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* @param outPkt SMBSrvPacket
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*/
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protected static void procIPCFileWrite(SMBSrvSession sess, SMBSrvPacket rxPkt, SMBSrvPacket outPkt)
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throws IOException, SMBSrvException
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{
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// Check if the received packet is a valid write file request
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if (rxPkt.checkPacketIsValid(5, 0) == false)
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{
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// Invalid request
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sess.sendErrorResponseSMB(SMBStatus.SRVUnrecognizedCommand, SMBStatus.ErrSrv);
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return;
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}
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// Debug
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if (logger.isDebugEnabled() && sess.hasDebug(SMBSrvSession.DBG_IPC))
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logger.debug("IPC$ File Write");
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// Pass the write request the DCE/RPC handler
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DCERPCHandler.processDCERPCRequest(sess, rxPkt, outPkt);
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}
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/**
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* Process an IPC pipe file write andX request
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*
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* @param sess SMBSrvSession
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* @param rxPkt SMBSrvPacket
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* @param outPkt SMBSrvPacket
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*/
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protected static void procIPCFileWriteAndX(SMBSrvSession sess, SMBSrvPacket rxPkt, SMBSrvPacket outPkt)
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throws IOException, SMBSrvException
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{
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// Check if the received packet is a valid write andX request
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if (rxPkt.checkPacketIsValid(12, 0) == false)
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{
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// Invalid request
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sess.sendErrorResponseSMB(SMBStatus.SRVUnrecognizedCommand, SMBStatus.ErrSrv);
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return;
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}
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// Debug
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if (logger.isDebugEnabled() && sess.hasDebug(SMBSrvSession.DBG_IPC))
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logger.debug("IPC$ File Write AndX");
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// Pass the write request the DCE/RPC handler
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DCERPCHandler.processDCERPCRequest(sess, rxPkt, outPkt);
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}
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/**
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* Process a special IPC$ file close request.
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*
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* @param sess SMBSrvSession
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* @param rxPkt SMBSrvPacket
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* @param outPkt SMBSrvPacket
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*/
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protected static void procIPCFileClose(SMBSrvSession sess, SMBSrvPacket rxPkt, SMBSrvPacket outPkt)
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throws IOException, SMBSrvException
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{
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// Check that the received packet looks like a valid file close request
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if (rxPkt.checkPacketIsValid(3, 0) == false)
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{
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sess.sendErrorResponseSMB(SMBStatus.SRVUnrecognizedCommand, SMBStatus.ErrSrv);
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return;
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}
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// Get the tree id from the received packet and validate that it is a valid
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// connection id.
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int treeId = rxPkt.getTreeId();
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TreeConnection conn = sess.findConnection(treeId);
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if (conn == null)
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{
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sess.sendErrorResponseSMB(SMBStatus.DOSInvalidDrive, SMBStatus.ErrDos);
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return;
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}
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// Get the file id from the request
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int fid = rxPkt.getParameter(0);
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DCEPipeFile netFile = (DCEPipeFile) conn.findFile(fid);
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if (netFile == null)
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{
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sess.sendErrorResponseSMB(SMBStatus.DOSInvalidHandle, SMBStatus.ErrDos);
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return;
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}
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// Debug
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if (logger.isDebugEnabled() && sess.hasDebug(SMBSrvSession.DBG_IPC))
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logger.debug("IPC$ File close [" + treeId + "] fid=" + fid);
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// Remove the file from the connections list of open files
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conn.removeFile(fid, sess);
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// Build the close file response
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outPkt.setParameterCount(0);
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outPkt.setByteCount(0);
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// Send the response packet
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sess.sendResponseSMB(outPkt);
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}
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/**
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* Process a set named pipe handle state request
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*
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* @param sess SMBSrvSession
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* @param tbuf SrvTransactBuffer
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* @param outPkt SMBSrvPacket
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*/
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protected static void procSetNamedPipeHandleState(SMBSrvSession sess, SrvTransactBuffer tbuf, SMBSrvPacket outPkt)
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throws IOException, SMBSrvException
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{
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// Get the request parameters
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DataBuffer setupBuf = tbuf.getSetupBuffer();
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setupBuf.skipBytes(2);
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int fid = setupBuf.getShort();
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DataBuffer paramBuf = tbuf.getParameterBuffer();
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int state = paramBuf.getShort();
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// Get the connection for the request
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TreeConnection conn = sess.findConnection(tbuf.getTreeId());
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// Get the IPC pipe file for the specified file id
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DCEPipeFile netFile = (DCEPipeFile) conn.findFile(fid);
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if (netFile == null)
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{
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sess.sendErrorResponseSMB(SMBStatus.DOSInvalidHandle, SMBStatus.ErrDos);
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return;
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}
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// Debug
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if (logger.isDebugEnabled() && sess.hasDebug(SMBSrvSession.DBG_IPC))
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logger.debug(" SetNmPHandState pipe=" + netFile.getName() + ", fid=" + fid + ", state=0x"
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+ Integer.toHexString(state));
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// Store the named pipe state
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netFile.setPipeState(state);
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// Setup the response packet
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SMBSrvTransPacket.initTransactReply(outPkt, 0, 0, 0, 0);
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// Send the response packet
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sess.sendResponseSMB(outPkt);
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}
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/**
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* Process an NT create andX request
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*
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* @param sess SMBSrvSession
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* @param rxPkt SMBSrvPacket
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* @param outPkt SMBSrvPacket
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*/
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protected static void procNTCreateAndX(SMBSrvSession sess, SMBSrvPacket rxPkt, SMBSrvPacket outPkt)
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throws IOException, SMBSrvException
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{
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// Get the tree id from the received packet and validate that it is a valid
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// connection id.
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int treeId = rxPkt.getTreeId();
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TreeConnection conn = sess.findConnection(treeId);
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if (conn == null)
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{
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sess.sendErrorResponseSMB(SMBStatus.NTInvalidParameter, SMBStatus.NTErr);
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return;
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}
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// Extract the NT create andX parameters
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NTParameterPacker prms = new NTParameterPacker(rxPkt.getBuffer(), SMBSrvPacket.PARAMWORDS + 5);
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int nameLen = prms.unpackWord();
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int flags = prms.unpackInt();
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int rootFID = prms.unpackInt();
|
|
int accessMask = prms.unpackInt();
|
|
long allocSize = prms.unpackLong();
|
|
int attrib = prms.unpackInt();
|
|
int shrAccess = prms.unpackInt();
|
|
int createDisp = prms.unpackInt();
|
|
int createOptn = prms.unpackInt();
|
|
int impersonLev = prms.unpackInt();
|
|
int secFlags = prms.unpackByte();
|
|
|
|
// Extract the filename string
|
|
|
|
int pos = DataPacker.wordAlign(rxPkt.getByteOffset());
|
|
String fileName = DataPacker.getUnicodeString(rxPkt.getBuffer(), pos, nameLen);
|
|
if (fileName == null)
|
|
{
|
|
sess.sendErrorResponseSMB(SMBStatus.NTInvalidParameter, SMBStatus.NTErr);
|
|
return;
|
|
}
|
|
|
|
// Debug
|
|
|
|
if (logger.isDebugEnabled() && sess.hasDebug(SMBSrvSession.DBG_IPC))
|
|
logger.debug("NT Create AndX [" + treeId + "] name=" + fileName + ", flags=0x"
|
|
+ Integer.toHexString(flags) + ", attr=0x" + Integer.toHexString(attrib) + ", allocSize="
|
|
+ allocSize);
|
|
|
|
// Check if the pipe name is a short or long name
|
|
|
|
if (fileName.startsWith("\\PIPE") == false)
|
|
fileName = "\\PIPE" + fileName;
|
|
|
|
// Check if the requested IPC$ file is valid
|
|
|
|
int pipeType = DCEPipeType.getNameAsType(fileName);
|
|
if (pipeType == -1)
|
|
{
|
|
sess.sendErrorResponseSMB(SMBStatus.NTObjectNotFound, SMBStatus.NTErr);
|
|
return;
|
|
}
|
|
|
|
// Check if there is a handler for the pipe file
|
|
|
|
if (DCEPipeHandler.getHandlerForType(pipeType) == null)
|
|
{
|
|
sess.sendErrorResponseSMB(SMBStatus.NTAccessDenied, SMBStatus.NTErr);
|
|
return;
|
|
}
|
|
|
|
// Create a network file for the special pipe
|
|
|
|
DCEPipeFile pipeFile = new DCEPipeFile(pipeType);
|
|
pipeFile.setGrantedAccess(NetworkFile.READWRITE);
|
|
|
|
// Add the file to the list of open files for this tree connection
|
|
|
|
int fid = -1;
|
|
|
|
try
|
|
{
|
|
fid = conn.addFile(pipeFile, sess);
|
|
}
|
|
catch (TooManyFilesException ex)
|
|
{
|
|
|
|
// Too many files are open on this connection, cannot open any more files.
|
|
|
|
sess.sendErrorResponseSMB(SMBStatus.Win32InvalidHandle, SMBStatus.NTErr);
|
|
return;
|
|
}
|
|
|
|
// Build the NT create andX response
|
|
|
|
outPkt.setParameterCount(34);
|
|
|
|
prms.reset(outPkt.getBuffer(), SMBSrvPacket.PARAMWORDS + 4);
|
|
|
|
prms.packByte(0);
|
|
prms.packWord(fid);
|
|
prms.packInt(0x0001); // File existed and was opened
|
|
|
|
prms.packLong(0); // Creation time
|
|
prms.packLong(0); // Last access time
|
|
prms.packLong(0); // Last write time
|
|
prms.packLong(0); // Change time
|
|
|
|
prms.packInt(0x0080); // File attributes
|
|
prms.packLong(4096); // Allocation size
|
|
prms.packLong(0); // End of file
|
|
prms.packWord(2); // File type - named pipe, message mode
|
|
prms.packByte(0xFF); // Pipe instancing count
|
|
prms.packByte(0x05); // IPC state bits
|
|
|
|
prms.packByte(0); // directory flag
|
|
|
|
outPkt.setByteCount(0);
|
|
|
|
outPkt.setAndXCommand(0xFF);
|
|
outPkt.setParameter(1, outPkt.getLength()); // AndX offset
|
|
|
|
// Send the response packet
|
|
|
|
sess.sendResponseSMB(outPkt);
|
|
}
|
|
} |