From 529d834815a4a102fecb0c6538aafea93491dedb Mon Sep 17 00:00:00 2001
From: evilsocket <evilsocket@gmail.com>
Date: Thu, 8 Feb 2018 01:03:31 +0100
Subject: [PATCH] new: keeping track of interface index

---
 net/endpoint.go    | 1 +
 net/net.go         | 1 +
 session/session.go | 1 +
 3 files changed, 3 insertions(+)

diff --git a/net/endpoint.go b/net/endpoint.go
index 2f607a29..997d6b90 100644
--- a/net/endpoint.go
+++ b/net/endpoint.go
@@ -11,6 +11,7 @@ import (
 
 type OnHostResolvedCallback func(e *Endpoint)
 type Endpoint struct {
+	Index            int                    `json:"-"`
 	IP               net.IP                 `json:"-"`
 	Net              *net.IPNet             `json:"-"`
 	IPv6             net.IP                 `json:"-"`
diff --git a/net/net.go b/net/net.go
index 5587d88a..3bfaa9bb 100644
--- a/net/net.go
+++ b/net/net.go
@@ -94,6 +94,7 @@ func FindInterface(name string) (*Endpoint, error) {
 				if len(e.HW) == 0 {
 					return nil, fmt.Errorf("Could not detect interface hardware address.")
 				}
+				e.Index = iface.Index
 				return e, nil
 			}
 		}
diff --git a/session/session.go b/session/session.go
index 6337e8fb..1d7cd516 100644
--- a/session/session.go
+++ b/session/session.go
@@ -201,6 +201,7 @@ func (s *Session) Start() error {
 
 	s.Env.Set(PromptVariable, DefaultPrompt)
 
+	s.Env.Set("iface.index", fmt.Sprintf("%d", s.Interface.Index))
 	s.Env.Set("iface.name", s.Interface.Name())
 	s.Env.Set("iface.ipv4", s.Interface.IpAddress)
 	s.Env.Set("iface.ipv6", s.Interface.Ip6Address)