| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.oodt.cas.protocol.sftp; |
| |
| //JDK imports |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.util.Map; |
| |
| //SshTools imports |
| import com.sshtools.daemon.platform.NativeProcessProvider; |
| import com.sshtools.j2ssh.io.DynamicBuffer; |
| |
| /** |
| * This is a shell provider that prints a message saying that we don't support |
| * shell access, and then closes the connection. |
| */ |
| public final class UnsupportedShellProcessProvider extends |
| NativeProcessProvider { |
| |
| private static final String MESSAGE = "This server does not provide shell access, only SFTP. Goodbye.\n"; |
| |
| private DynamicBuffer stdin = new DynamicBuffer(); |
| private DynamicBuffer stderr = new DynamicBuffer(); |
| private DynamicBuffer stdout = new DynamicBuffer(); |
| |
| @Override |
| public boolean createProcess(final String command, final Map environment) |
| throws IOException { |
| return true; |
| } |
| |
| @Override |
| public String getDefaultTerminalProvider() { |
| return "UnsupportedShell"; |
| } |
| |
| @Override |
| public void kill() { |
| try { |
| stdin.getInputStream().close(); |
| stdin.getOutputStream().close(); |
| } catch (Exception ex) { |
| } |
| try { |
| stdout.getInputStream().close(); |
| stdout.getOutputStream().close(); |
| } catch (Exception ex1) { |
| } |
| try { |
| stderr.getInputStream().close(); |
| stderr.getOutputStream().close(); |
| } catch (Exception ex2) { |
| } |
| } |
| |
| @Override |
| public void start() throws IOException { |
| stdin.getOutputStream().write(MESSAGE.getBytes()); |
| } |
| |
| @Override |
| public boolean stillActive() { |
| try { |
| return stdin.getInputStream().available() > 0; |
| } catch (IOException ex) { |
| return false; |
| } |
| } |
| |
| @Override |
| public boolean supportsPseudoTerminal(final String term) { |
| return true; |
| } |
| |
| @Override |
| public boolean allocatePseudoTerminal(final String term, final int cols, |
| final int rows, final int width, final int height, final String modes) { |
| return true; |
| } |
| |
| @Override |
| public int waitForExitCode() { |
| return 0; |
| } |
| |
| public InputStream getInputStream() throws IOException { |
| return stdin.getInputStream(); |
| } |
| |
| public OutputStream getOutputStream() throws IOException { |
| return stdout.getOutputStream(); |
| } |
| |
| public InputStream getStderrInputStream() { |
| return stderr.getInputStream(); |
| } |
| |
| } |