如何使用 Ganymed SSH-2 启用完整日志记录

Question

I am developing a java application that executes ssh commands using Ganymed SSH-2

I need to produce full logs for each sequence of commands, eg zip file transfer, unzipping, zipping etc..

Having searched the source code for ch.ethz.ssh2.log.Logger i can set the boolean public static volatile boolean enabled = false; to true

this provides the following output

Mar 05, 2015 10:17:25 AM ch.ethz.ssh2.log.Logger info
INFO: kex_algo=diffie-hellman-group-exchange-sha1
Mar 05, 2015 10:17:25 AM ch.ethz.ssh2.log.Logger info
INFO: server_host_key_algo=ssh-rsa
Mar 05, 2015 10:17:25 AM ch.ethz.ssh2.log.Logger info
INFO: enc_algo_client_to_server=aes128-ctr
Mar 05, 2015 10:17:25 AM ch.ethz.ssh2.log.Logger info
INFO: enc_algo_server_to_client=aes128-ctr
Mar 05, 2015 10:17:25 AM ch.ethz.ssh2.log.Logger info
INFO: mac_algo_client_to_server=hmac-sha1-96
Mar 05, 2015 10:17:25 AM ch.ethz.ssh2.log.Logger info
INFO: mac_algo_server_to_client=hmac-sha1-96
Mar 05, 2015 10:17:25 AM ch.ethz.ssh2.log.Logger info
INFO: comp_algo_client_to_server=none
Mar 05, 2015 10:17:25 AM ch.ethz.ssh2.log.Logger info
INFO: comp_algo_server_to_client=none

However I also require ALL level logging for command execution including file transfers.

How do i configure the Logger to produce all the information available?

Answer 1

A little late answer but maybe someone still needs this info.

I managed to get the debug statements visible like this:

    public void enableFineLogging() {
    try {
        ch.ethz.ssh2.log.Logger.enabled = true;
        String name = "myDynamicFileNamePart";

        FileHandler fileHandler = new FileHandler("./logs/"
                + name + "_SFTP.log", 10000000, 1000, true);
        fileHandler.setLevel(Level.FINE);
        fileHandler.setFormatter(new SimpleFormatter());

        final Logger app = Logger.getLogger("ch.ethz");
        app.setLevel(Level.FINE);
        app.addHandler(fileHandler);
        app.setUseParentHandlers(false);

    } catch (Exception e) {
        // Catchalog
    }
}

With result in file with:

marras 15, 2017 12:16:56 IP. org.slf4j.impl.JCLLoggerAdapter info

INFO: Client identity string: SSH-2.0-SSHJ_0.19.1

marras 15, 2017 12:16:56 IP. org.slf4j.impl.JCLLoggerAdapter info

INFO: Server identity string: SSH-2.0-OpenSSH_6.6.1

marras 15, 2017 12:16:56 IP. org.slf4j.impl.JCLLoggerAdapter debug

FINE: Setting <> to null

marras 15, 2017 12:16:56 IP. org.slf4j.impl.JCLLoggerAdapter debug

FINE: Sending SSH_MSG_KEXINIT

marras 15, 2017 12:16:56 IP. org.slf4j.impl.JCLLoggerAdapter debug

FINE: Setting <> to SOME

marras 15, 2017 12:16:56 IP. org.slf4j.impl.JCLLoggerAdapter debug

FINE: Awaiting <>

marras 15, 2017 12:16:56 IP. org.slf4j.impl.JCLLoggerAdapter debug

FINE: Received SSH_MSG_KEXINIT

Use ConsoleHandler if you wish logs in console. Also closing the log file needs to be considered with fileHandler.close() after you quit logging.

Tune the log level by choosing from SEVERE, WARNING, INFO, CONFIG, FINE, FINER, FINEST, ALL

Answer 2

I have added ganymed-ssh2 library in my application. My application establish SSH connection using this lib.

I set log level to ALL (app.setLevel(Level.ALL);

I called the method enableFineLogging from my application.

When I run my application, I see the log file created as specified in fileHandler.

But, I do not see the log file populated. What could be the reason?