add support for ssh proxy command

node_modules/c9/ssh.js

@@ -12,7 +12,7 @@ var fs = require("fs");
 var tmp = require("tmp");
 var debug = require("debug")("ssh");
 
-exports.buildArgs = function(prvkeyFile, host) {
+exports.buildArgs = function(prvkeyFile, host, proxy) {
     var args = [
         "-o", "PasswordAuthentication=no",
         "-o", "IdentityFile=" + prvkeyFile,
@@ -33,11 +33,21 @@ exports.buildArgs = function(prvkeyFile, host) {
         args.push(host[0]);
     }
     
+    if (proxy) {
+        args.push(
+            "ssh",
+            "-o", "UserKnownHostsFile=/dev/null",
+            "-o", "StrictHostKeyChecking=no",
+            "-o", "IdentitiesOnly=yes",
+            proxy
+        );
+    }
+    
     return args;
 };
 
-exports.spawnWithKeyFile = function(prvkeyFile, host, command, args) {
-    var sshArgs = exports.buildArgs(prvkeyFile, host);
+exports.spawnWithKeyFile = function(prvkeyFile, host, proxy, command, args) {
+    var sshArgs = exports.buildArgs(prvkeyFile, host, proxy);
 
     args = sshArgs.concat(command ? [command] : []).concat(args || []);
     debug("executing: ssh " + args.join(" "));
@@ -81,11 +91,11 @@ exports.writeKeyFiles = function(prvkey, pubkey, callback) {
     });
 };
 
-exports.spawn = function(prvkey, host, command, args, callback) {
+exports.spawn = function(prvkey, host, proxy, command, args, callback) {
     exports.writeKeyFile(prvkey, function(err, filename) {
         if (err) return callback(err);
         
-        var child = exports.spawnWithKeyFile(filename, host, command, args);
+        var child = exports.spawnWithKeyFile(filename, host, proxy, command, args);
 
         child.on("exit", function(code) {
             fs.unlink(filename, function() {});
@@ -95,8 +105,8 @@ exports.spawn = function(prvkey, host, command, args, callback) {
     });
 };
 
-exports.exec = function(prvkey, host, command, args, callback) {
-    exports.spawn(prvkey, host, command, args, function(err, child) {
+exports.exec = function(prvkey, host, proxy, command, args, callback) {
+    exports.spawn(prvkey, host, proxy, command, args, function(err, child) {
         if (err)
             return callback(err);
 
@@ -148,8 +158,8 @@ exports.generateKeyPair = function(email, callback) {
     });
 };
 
-exports.validateSSHKey = function(prvkey, host, callback) {
-    exports.exec(prvkey, host, "", [], function(err, stdout, stderr) {
+exports.validateSSHKey = function(prvkey, host, proxy, callback) {
+    exports.exec(prvkey, host, proxy, "", [], function(err, stdout, stderr) {
         debug("out >> " + stdout);
         debug("err >> " + stderr);
         debug(err);