Add more ssh_config directives

[thshdw]

Requested by @skebi69 Add more flexibility with building the JSON settings for Hosts parsed in ssh_config

Example:

Host gandalf
        # shuttle.name = work/servers/web01 (webserver)
        # shuttle.cmd = ssh -Nf webserver
        # shuttle.theme = Homebrew
        # shuttle.title = personal webserver 
        # shuttle.window = new
        HostName [email protected]

[skebi69]

Instead of the following in AppDelegate.m:

      // if everything worked out we will see a non-nil itemList where the
        // system should be appended to. part hold the last part of the splitted string (aka hostname).
        if (itemList) {
            // build the corresponding ssh command
            NSString* cmd = [NSString stringWithFormat:@"ssh %@", key];

we change it to:

        // if everything worked out we will see a non-nil itemList where the
        // system should be appended to. part hold the last part of the splitted string (aka hostname).
        if (itemList) {      
            // build the corresponding ssh command
            NSString* cmd = servers[key][@"cmd"] ?
                cmd = servers[key][@"cmd"] : [NSString stringWithFormat:@"ssh %@", key];

The reason we do this is to enable snippets like this in ~/.ssh/config:

Host Sandbox-Tunnels

shuttle.name = Sandbox/_Tunnels

shuttle.cmd = ssh -Nf Sandbox-Tunnels && exit

Hostname A.B.C.D Port 57534 LocalForward 127.0.0.1:12345 some.machine.us-east-1.rds.amazonaws.com:1521 LocalForward 127.0.0.1:12356 10.100.9.10:22 LocalForward 127.0.0.1:12357 10.100.1.100:22

The # shuttle.cmd directive allows us to establish a non-interactive session with the bastion host (using –Nf and exit). This allows users to establish “tunnels” and then use those tunnels to connect to servers secured behind the bastion host.

[thshdw]

@skebi69 Looks reasonable! If you want to make a pull request I'll test it out to make sure we have no regressions. If all tests well I'll commit it.

[skebi69]

I can't create a branch (shuttle-johnk) to push the change to. Permission denied.

[thshdw]

Click on the Pull Request button; where it says this branch is 1 commit ahead.