Jsch User/Authors,
I am writing a wrapper class around jsch that would make it easier
to implement ssh/scp connections.
So far I am able to connect thru ssh via private keys and issue a
command on a remote sure.
I am able to capture the output, but the stderr I am having issues
with. When ever I start to work with STDERR I see:
INFO: Caught an exception, leaving main loop due to Socket Closed
whenever I turn on logging.
No matter where I tried to implement
((ChannelExec)channel).getErrStream(); that message shows up.
What is the proper way to gather stderr for the remote command? Or is
the above message something that can be ignored.
My code:
public class SecureCommandUtility
{
static {
// Don't check host key
Properties config = new Properties();
config.put("StrictHostKeyChecking", "no");
config.put("Protocol", "2");
config.put("Ciphers", "arcfour,arcfour128");
config.put("Cipher", "arcfour");
config.put("GSSAPIAuthentication", "no");
config.put("PreferredAuthentications", "publickey");
JSch.setConfig(config);
}
public static SecureCommandResponse
executeRemoteCommandWithPrivateKey(String hostName, String userName,
String keyFile, String command) throws Exception
{
SecureCommandResponse response = new SecureCommandResponse();
try{
JSch jsch = new JSch();
jsch.addIdentity(keyFile);
Session session = jsch.getSession(userName, hostName, 22);
session.setTimeout(5000);
session.connect();
Channel channel=session.openChannel("exec");
((ChannelExec)channel).setCommand(command);
channel.setInputStream(null);
((ChannelExec)channel).setErrStream(System.err, false);
//((ChannelExec)channel).getErrStream();
InputStream in = ((ChannelExec)channel).getInputStream();
channel.connect();
ArrayList<String> stdout = new ArrayList<String>();
BufferedReader reader = new BufferedReader(new
InputStreamReader(in, "UTF-8"));
while(true) {
if ( in != null ) {
String line;
while ((line = reader.readLine()) != null) {
stdout.add(line);
}
if(channel.isClosed()){
response.returnCode =
channel.getExitStatus();
break;
}
try {
Thread.sleep(1000);
}catch(Exception ee){}
}
}
response.stdOut = stdout;
channel.disconnect();
session.disconnect();
}catch(Exception e){
System.out.println(e);
}
return response;
}
If you can point me in the right direction it would be greatly appreciated...
Thanks,
Chad
PS. Great utility by the way....
--
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drink named after you." And the grasshopper says "Really, You have a
drink named Murray?"
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