legacy/org.argeo.slc.support/src/org/argeo/slc/jsch/SshShell.java

   1 package org.argeo.slc.jsch;
   2
   3 import java.io.BufferedReader;
   4 import java.io.BufferedWriter;
   5 import java.io.IOException;
   6 import java.io.InputStreamReader;
   7 import java.io.OutputStreamWriter;
   8
   9 import org.apache.commons.io.IOUtils;
  10 import org.argeo.api.cms.CmsLog;
  11 import org.argeo.slc.SlcException;
  12 import org.springframework.core.io.Resource;
  13 import org.springframework.util.StringUtils;
  14
  15 import com.jcraft.jsch.Channel;
  16 import com.jcraft.jsch.Session;
  17
  18 public class SshShell extends AbstractJschTask {
  19         private final static CmsLog log = CmsLog.getLog(SshShell.class);
  20         private Resource input;
  21
  22         @Override
  23         void run(Session session) {
  24                 try {
  25                         final Channel channel = session.openChannel("shell");
  26
  27                         // Enable agent-forwarding.
  28                         // ((ChannelShell)channel).setAgentForwarding(true);
  29
  30                         // channel.setInputStream(System.in);
  31                         // channel.setInputStream(input.getInputStream());
  32                         /*
  33                          * // a hack for MS-DOS prompt on Windows.
  34                          * channel.setInputStream(new FilterInputStream(System.in){ public
  35                          * int read(byte[] b, int off, int len)throws IOException{ return
  36                          * in.read(b, off, (len>1024?1024:len)); } });
  37                          */
  38
  39                         // channel.setOutputStream(System.out);
  40
  41                         /*
  42                          * // Choose the pty-type "vt102".
  43                          * ((ChannelShell)channel).setPtyType("vt102");
  44                          */
  45
  46                         /*
  47                          * // Set environment variable "LANG" as "ja_JP.eucJP".
  48                          * ((ChannelShell)channel).setEnv("LANG", "ja_JP.eucJP");
  49                          */
  50
  51                         // Writer thread
  52                         final BufferedWriter writer = new BufferedWriter(
  53                                         new OutputStreamWriter(channel.getOutputStream()));
  54
  55                         // channel.connect();
  56                         channel.connect(3 * 1000);
  57
  58                         // while (!channel.isConnected())
  59                         // try {
  60                         // Thread.sleep(500);
  61                         // } catch (InterruptedException e1) {
  62                         // // silent
  63                         // }
  64
  65                         Thread writerThread = new Thread("Shell writer " + getSshTarget()) {
  66
  67                                 @Override
  68                                 public void run() {
  69
  70                                         if (log.isDebugEnabled())
  71                                                 log.debug("Start writing to shell");
  72
  73                                         BufferedReader reader = null;
  74                                         try {
  75                                                 reader = new BufferedReader(new InputStreamReader(input
  76                                                                 .getInputStream()));
  77                                                 String line = null;
  78                                                 while ((line = reader.readLine()) != null) {
  79                                                         if (!StringUtils.hasText(line))
  80                                                                 continue;
  81                                                         writer.write(line);
  82                                                         writer.newLine();
  83                                                 }
  84                                                 writer.append("exit");
  85                                                 writer.newLine();
  86                                                 writer.flush();
  87                                                 // channel.disconnect();
  88                                         } catch (IOException e) {
  89                                                 throw new SlcException("Cannot write to shell on "
  90                                                                 + getSshTarget(), e);
  91                                         } finally {
  92                                                 IOUtils.closeQuietly(reader);
  93                                         }
  94                                 }
  95                         };
  96                         writerThread.start();
  97
  98                         BufferedReader execIn = null;
  99                         try {
 100                                 execIn = new BufferedReader(new InputStreamReader(channel
 101                                                 .getInputStream()));
 102                                 String line = null;
 103                                 while ((line = execIn.readLine()) != null) {
 104                                         if (!line.trim().equals(""))
 105                                                 log.info(line);
 106                                 }
 107                         } catch (Exception e) {
 108                                 throw new SlcException("Cannot read from shell on "
 109                                                 + getSshTarget(), e);
 110                         } finally {
 111                                 IOUtils.closeQuietly(execIn);
 112                         }
 113
 114                 } catch (Exception e) {
 115                         throw new SlcException("Cannot use SSH shell on " + getSshTarget(),
 116                                         e);
 117                 }
 118         }
 119
 120         public void setInput(Resource input) {
 121                 this.input = input;
 122         }
 123
 124 }