Esempio n. 1
0
  /**
   * Process an NT create andX request
   *
   * @param sess SMBSrvSession
   * @param smbPkt SMBSrvPacket
   * @exception IOException
   * @exception SMBSrvException
   */
  protected static void procNTCreateAndX(SMBSrvSession sess, SMBSrvPacket smbPkt)
      throws IOException, SMBSrvException {

    // Get the tree id from the received packet and validate that it is a valid
    // connection id.

    TreeConnection conn = sess.findTreeConnection(smbPkt);

    if (conn == null) {
      sess.sendErrorResponseSMB(smbPkt, SMBStatus.NTInvalidParameter, SMBStatus.NTErr);
      return;
    }

    // Extract the NT create andX parameters

    NTParameterPacker prms = new NTParameterPacker(smbPkt.getBuffer(), SMBSrvPacket.PARAMWORDS + 5);

    int nameLen = prms.unpackWord();
    int flags = prms.unpackInt();
    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(smbPkt.getByteOffset());
    String fileName = DataPacker.getUnicodeString(smbPkt.getBuffer(), pos, nameLen);
    if (fileName == null) {
      sess.sendErrorResponseSMB(smbPkt, SMBStatus.NTInvalidParameter, SMBStatus.NTErr);
      return;
    }

    // Debug

    if (Debug.EnableInfo && sess.hasDebug(SMBSrvSession.DBG_IPC))
      sess.debugPrintln(
          "NT Create AndX ["
              + smbPkt.getTreeId()
              + "] 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(smbPkt, SMBStatus.NTObjectNotFound, SMBStatus.NTErr);
      return;
    }

    // Check if there is a handler for the pipe file

    if (DCEPipeHandler.getHandlerForType(pipeType) == null) {
      sess.sendErrorResponseSMB(smbPkt, 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(smbPkt, SMBStatus.Win32InvalidHandle, SMBStatus.NTErr);
      return;
    }

    // Build the NT create andX response

    boolean extendedResponse = (flags & WinNT.ExtendedResponse) != 0;
    smbPkt.setParameterCount(extendedResponse ? 42 : 34);

    prms.reset(smbPkt.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

    // Pack the extra extended response area, if requested

    if (extendedResponse == true) {

      // 22 byte block of zeroes

      prms.packLong(0);
      prms.packLong(0);
      prms.packInt(0);
      prms.packWord(0);

      // Pack the permissions

      prms.packInt(0x1F01FF);

      // 6 byte block of zeroes

      prms.packInt(0);
      prms.packWord(0);
    }

    smbPkt.setByteCount(0);

    smbPkt.setAndXCommand(0xFF);
    smbPkt.setParameter(1, smbPkt.getLength()); // AndX offset

    // Send the response packet

    sess.sendResponseSMB(smbPkt);
  }
Esempio n. 2
0
  /**
   * Process a transact2 query file information (via handle) request.
   *
   * @param sess SMBSrvSession
   * @param vc VirtualCircuit
   * @param tbuf Transaction request details
   * @param smbPkt SMBSrvPacket
   * @exception IOException
   * @exception SMBSrvException
   */
  protected static final void procTrans2QueryFile(
      SMBSrvSession sess, VirtualCircuit vc, SrvTransactBuffer tbuf, SMBSrvPacket smbPkt)
      throws IOException, SMBSrvException {

    // Get the tree connection details

    int treeId = tbuf.getTreeId();
    TreeConnection conn = vc.findConnection(treeId);

    if (conn == null) {
      sess.sendErrorResponseSMB(
          smbPkt, SMBStatus.NTInvalidParameter, SMBStatus.DOSInvalidDrive, SMBStatus.ErrDos);
      return;
    }

    // Check if the user has the required access permission

    if (conn.hasReadAccess() == false) {

      // User does not have the required access rights

      sess.sendErrorResponseSMB(
          smbPkt, SMBStatus.NTAccessDenied, SMBStatus.DOSAccessDenied, SMBStatus.ErrDos);
      return;
    }

    // Get the file id and query path information level

    DataBuffer paramBuf = tbuf.getParameterBuffer();

    int fid = paramBuf.getShort();
    int infoLevl = paramBuf.getShort();

    // Get the file details via the file id

    NetworkFile netFile = conn.findFile(fid);

    if (netFile == null) {
      sess.sendErrorResponseSMB(smbPkt, SMBStatus.DOSInvalidHandle, SMBStatus.ErrDos);
      return;
    }

    // Debug

    if (Debug.EnableInfo && sess.hasDebug(SMBSrvSession.DBG_IPC))
      sess.debugPrintln(
          "IPC$ Query File - level=0x"
              + Integer.toHexString(infoLevl)
              + ", fid="
              + fid
              + ", name="
              + netFile.getFullName());

    // Access the shared device disk interface

    try {

      // Set the return parameter count, so that the data area position can be calculated.

      smbPkt.setParameterCount(10);

      // Pack the file information into the data area of the transaction reply

      byte[] buf = smbPkt.getBuffer();
      int prmPos = DataPacker.longwordAlign(smbPkt.getByteOffset());
      int dataPos = prmPos + 4;

      // Pack the return parametes, EA error offset

      smbPkt.setPosition(prmPos);
      smbPkt.packWord(0);

      // Create a data buffer using the SMB packet. The response should always fit into a
      // single reply packet.

      DataBuffer replyBuf = new DataBuffer(buf, dataPos, buf.length - dataPos);

      // Build the file information from the network file details

      FileInfo fileInfo =
          new FileInfo(netFile.getName(), netFile.getFileSize(), netFile.getFileAttributes());

      fileInfo.setAccessDateTime(netFile.getAccessDate());
      fileInfo.setCreationDateTime(netFile.getCreationDate());
      fileInfo.setModifyDateTime(netFile.getModifyDate());
      fileInfo.setChangeDateTime(netFile.getModifyDate());

      fileInfo.setFileId(netFile.getFileId());

      // Set the file allocation size, looks like it is used as the pipe buffer size

      fileInfo.setAllocationSize(4096L);

      // Pack the file information into the return data packet

      int dataLen = QueryInfoPacker.packInfo(fileInfo, replyBuf, infoLevl, true);

      // Check if any data was packed, if not then the information level is not supported

      if (dataLen == 0) {
        sess.sendErrorResponseSMB(
            smbPkt, SMBStatus.NTInvalidParameter, SMBStatus.SRVNonSpecificError, SMBStatus.ErrSrv);
        return;
      }

      SMBSrvTransPacket.initTransactReply(smbPkt, 2, prmPos, dataLen, dataPos);
      smbPkt.setByteCount(replyBuf.getPosition() - smbPkt.getByteOffset());

      // Send the transact reply

      sess.sendResponseSMB(smbPkt);
    } catch (FileNotFoundException ex) {

      // Requested file does not exist

      sess.sendErrorResponseSMB(
          smbPkt, SMBStatus.NTObjectNotFound, SMBStatus.DOSFileNotFound, SMBStatus.ErrDos);
      return;
    } catch (PathNotFoundException ex) {

      // Requested path does not exist

      sess.sendErrorResponseSMB(
          smbPkt, SMBStatus.NTObjectPathNotFound, SMBStatus.DOSFileNotFound, SMBStatus.ErrDos);
      return;
    } catch (UnsupportedInfoLevelException ex) {

      // Requested information level is not supported

      sess.sendErrorResponseSMB(
          smbPkt, SMBStatus.NTInvalidParameter, SMBStatus.SRVNonSpecificError, SMBStatus.ErrSrv);
      return;
    } catch (DiskOfflineException ex) {

      // Filesystem is offline

      sess.sendErrorResponseSMB(
          smbPkt, SMBStatus.NTObjectPathNotFound, SMBStatus.HRDDriveNotReady, SMBStatus.ErrHrd);
    }
  }
Esempio n. 3
0
  /**
   * Process a special IPC$ file open request.
   *
   * @param sess SMBSrvSession
   * @param smbPkt SMBSrvPacket
   * @exception IOException
   * @exception SMBSrvException
   */
  protected static void procIPCFileOpen(SMBSrvSession sess, SMBSrvPacket smbPkt)
      throws IOException, SMBSrvException {

    // Get the data bytes position and length

    int dataPos = smbPkt.getByteOffset();
    int dataLen = smbPkt.getByteCount();
    byte[] buf = smbPkt.getBuffer();

    // Extract the filename string

    String fileName = DataPacker.getString(buf, dataPos, dataLen);

    // Debug

    if (Debug.EnableInfo && sess.hasDebug(SMBSrvSession.DBG_IPC))
      sess.debugPrintln("IPC$ Open file = " + fileName);

    // Check if the requested IPC$ file is valid

    int pipeType = DCEPipeType.getNameAsType(fileName);
    if (pipeType == -1) {
      sess.sendErrorResponseSMB(smbPkt, SMBStatus.DOSFileNotFound, SMBStatus.ErrDos);
      return;
    }

    // Get the tree connection details

    TreeConnection conn = sess.findTreeConnection(smbPkt);

    if (conn == null) {
      sess.sendErrorResponseSMB(smbPkt, SMBStatus.SRVInvalidTID, SMBStatus.ErrSrv);
      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(smbPkt, SMBStatus.DOSTooManyOpenFiles, SMBStatus.ErrDos);
      return;
    }

    // Build the open file response

    smbPkt.setParameterCount(15);

    smbPkt.setAndXCommand(0xFF);
    smbPkt.setParameter(1, 0); // AndX offset

    smbPkt.setParameter(2, fid);
    smbPkt.setParameter(3, 0); // file attributes
    smbPkt.setParameter(4, 0); // last write time
    smbPkt.setParameter(5, 0); // last write date
    smbPkt.setParameterLong(6, 0); // file size
    smbPkt.setParameter(8, 0);
    smbPkt.setParameter(9, 0);
    smbPkt.setParameter(10, 0); // named pipe state
    smbPkt.setParameter(11, 0);
    smbPkt.setParameter(12, 0); // server FID (long)
    smbPkt.setParameter(13, 0);
    smbPkt.setParameter(14, 0);

    smbPkt.setByteCount(0);

    // Send the response packet

    sess.sendResponseSMB(smbPkt);
  }