From 21cb8984c3fe18e4ca5f14deecf79cc3d81aea10 Mon Sep 17 00:00:00 2001
From: Manfred Touron <m@42.am>
Date: Tue, 2 Feb 2016 20:52:14 +0100
Subject: [PATCH] make a clone of the host when iterating over gateways

---
 pkg/commands/proxy.go | 11 ++++++-----
 pkg/config/host.go    |  7 +++++++
 2 files changed, 13 insertions(+), 5 deletions(-)

diff --git a/pkg/commands/proxy.go b/pkg/commands/proxy.go
index c7dc44997..ab8e1d556 100644
--- a/pkg/commands/proxy.go
+++ b/pkg/commands/proxy.go
@@ -84,23 +84,24 @@ func proxy(host *config.Host, conf *config.Config, dryRun bool) error {
 					Logger.Errorf("Failed to use 'direct' connection: %v", err)
 				}
 			} else {
+				hostCopy := host.Clone()
 				gatewayHost := conf.GetGatewaySafe(gateway)
 
-				err := prepareHostControlPath(host, gatewayHost)
+				err := prepareHostControlPath(hostCopy, gatewayHost)
 				if err != nil {
 					return err
 				}
 
-				if host.ProxyCommand == "" {
-					host.ProxyCommand = "nc %h %p"
+				if hostCopy.ProxyCommand == "" {
+					hostCopy.ProxyCommand = "nc %h %p"
 				}
 				// FIXME: dynamically add "-v" flags
 
-				if err = hostPrepare(host); err != nil {
+				if err = hostPrepare(hostCopy); err != nil {
 					return err
 				}
 
-				command := "ssh %name -- " + host.ExpandString(host.ProxyCommand)
+				command := "ssh %name -- " + hostCopy.ExpandString(hostCopy.ProxyCommand)
 
 				Logger.Debugf("Using gateway '%s': %s", gateway, command)
 				err = proxyCommand(gatewayHost, command, dryRun)
diff --git a/pkg/config/host.go b/pkg/config/host.go
index 5a07c387b..30c9102fe 100644
--- a/pkg/config/host.go
+++ b/pkg/config/host.go
@@ -117,10 +117,17 @@ func NewHost(name string) *Host {
 	}
 }
 
+// Name returns the name of a host
 func (h *Host) Name() string {
 	return h.name
 }
 
+// Clone returns a copy of an existing Host
+func (h *Host) Clone() *Host {
+	newHost := *h
+	return &newHost
+}
+
 // ApplyDefaults ensures a Host is valid by filling the missing fields with defaults
 func (h *Host) ApplyDefaults(defaults *Host) {
 	// ssh-config fields