124 lines
3.6 KiB
JavaScript
124 lines
3.6 KiB
JavaScript
/*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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/*
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* Copyright 2016 Joyent, Inc.
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*
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* `triton instance ssh ...`
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*/
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var path = require('path');
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var spawn = require('child_process').spawn;
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var common = require('../common');
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function do_ssh(subcmd, opts, args, callback) {
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var self = this;
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if (opts.help) {
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this.do_help('help', {}, [subcmd], callback);
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return;
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} else if (args.length === 0) {
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callback(new Error('invalid args: ' + args));
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return;
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}
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var cli = this.top;
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var id = args.shift();
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var user = 'root';
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var i = id.indexOf('@');
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if (i >= 0) {
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user = id.substr(0, i);
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id = id.substr(i + 1);
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}
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cli.tritonapi.getInstance(id, function (err, inst) {
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if (err) {
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callback(err);
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return;
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}
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var ip = inst.primaryIp;
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if (!ip) {
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callback(new Error('primaryIp not found for instance'));
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return;
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}
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args = ['-l', user, ip].concat(args);
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/*
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* By default we disable ControlMaster (aka mux, aka SSH connection
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* multiplexing) because of
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* https://github.com/joyent/node-triton/issues/52
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*
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*/
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if (!opts.no_disable_mux) {
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/*
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* A simple `-o ControlMaster=no` doesn't work. With just that
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* option, a `ControlPath` option (from ~/.ssh/config) will still
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* be used if it exists. Our hack is to set a ControlPath we
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* know should not exist. Using '/dev/null' wasn't a good
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* alternative because `ssh` tries "$ControlPath.$somerandomnum"
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* and also because Windows.
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*/
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var nullSshControlPath = path.resolve(
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cli.tritonapi.config._configDir, 'tmp', 'nullSshControlPath');
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args = [
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'-o', 'ControlMaster=no',
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'-o', 'ControlPath='+nullSshControlPath
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].concat(args);
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}
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self.top.log.info({args: args}, 'forking ssh');
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var child = spawn('ssh', args, {stdio: 'inherit'});
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child.on('close', function (code) {
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/*
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* Once node 0.10 support is dropped we could instead:
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* process.exitCode = code;
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* callback();
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*/
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process.exit(code);
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});
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});
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}
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do_ssh.options = [
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{
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names: ['help', 'h'],
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type: 'bool',
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help: 'Show this help.'
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}
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];
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do_ssh.help = [
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/* BEGIN JSSTYLED */
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'SSH to the primary IP of an instance',
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'',
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'Usage:',
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' {{name}} ssh [-h] [-M] <inst> [<ssh-arguments>]',
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'',
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'{{options}}',
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'Where <inst> is the name, short ID or ID of a given instance. Note that',
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'the <inst> argument must come before any `ssh` options or arguments.',
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'',
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'There is a known issue with SSH connection multiplexing (a.k.a. ',
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'ControlMaster, mux) where stdout/stderr is lost. As a workaround, `ssh`',
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'is spawned with options disabling ControlMaster. See ',
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'<https://github.com/joyent/node-triton/issues/52> for details. If you ',
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'want to use ControlMaster, an alternative is:',
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' ssh root@$(triton ip <inst>)'
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/* END JSSTYLED */
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].join('\n');
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do_ssh.interspersedOptions = false;
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// Use 'file' to fallback to the default bash completion... even though 'file'
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// isn't quite right.
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do_ssh.completionArgtypes = ['tritoninstance', 'file'];
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module.exports = do_ssh;
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