bugfix: if no route is set, define an empty default route

Author: cyrilst

pkg/utils/config.go

@@ -23,6 +23,8 @@ import (
 var (
 	defaultSSHExe  = "ssh"
 	defaultSSHArgs = []string{"-q", "-Y"}
+	defaultRoutes  = map[string]*RouteConfig{"default": &RouteConfig{
+		Dest: []string{}}}
 )
 
 // Config represents the configuration for sshproxy.
@@ -219,6 +221,10 @@ func LoadConfig(filename, currentUsername, sid string, start time.Time, groups m
 		config.SSH.Args = defaultSSHArgs
 	}
 
+	if config.Routes == nil {
+		config.Routes = defaultRoutes
+	}
+
 	// we have to use a slice of maps in order to have ordered maps
 	for _, groupconfigs := range config.Groups {
 		for groupnames, groupconfig := range groupconfigs {