OpenVPN plugin examples.                            Daniel Kubec <niel@rtfm.cz>

Examples provided:

keyingmaterialexporter.c   -- Example based on TLS Keying Material Exporters over HTTP [RFC-5705]
                              (openvpn/doc/keying-material-exporter.txt)

This example demonstrates authenticating a user over HTTP who have already
established an OpenVPN connecting using the --keying-material-exporter
feature.

Requires:
OpenVPN RFC-5705 Support, OpenSSL >= 1.0.1

Files:
  http-server.py -- Example HTTP Server listen  0.0.0.0:8080
  http-client.py -- Example HTTP Client connect 10.8.0.1:8080 [GET /$SESSIONID]

  server.ovpn    -- Example HTTP SSO VPN Server configuration
  client.ovpn    -- Example HTTP SSO VPN Client configuration

  keyingmaterialexporter.c,
  keyingmaterialexporter.so  -- Example OpenVPN Client and Server plugin

To build:
  ./build keyingmaterialexporter

To use in OpenVPN:

Enter openvpn/sample/sample-plugins/keyingmaterialexporter directory
and in separate terminals, start these four processes:

$ openvpn --config ./server.ovpn
$ openvpn --config ./client.ovpn
$ ./http-server.py
$ ./http-client.py

Test:

openvpn --config ./server.ovpn
##############################

PLUGIN SSO: app session created
PLUGIN_CALL: POST ./keyingmaterialexporter.so/PLUGIN_TLS_VERIFY status=0
PLUGIN SSO: app session key:  a5885abc84d361803f58ede1ef9c0adf99e720cd
PLUGIN SSO: app session file: /tmp/openvpn_sso_a5885abc84d361803f58ede1ef9c0adf99e720cd
PLUGIN SSO: app session user: Test-Client

openvpn --config ./client.ovpn
##############################
PLUGIN SSO: app session created
PLUGIN_CALL: POST ./keyingmaterialexporter.so/PLUGIN_TLS_VERIFY status=0
PLUGIN SSO: app session key:  a5885abc84d361803f58ede1ef9c0adf99e720cd
PLUGIN SSO: app session file: /tmp/openvpn_sso_user
PLUGIN_CALL: POST ./keyingmaterialexporter.so/PLUGIN_TLS_FINAL status=0

HTTP_SERVER:
http-server.py
################
http server started
session file: /tmp/openvpn_sso_a5885abc84d361803f58ede1ef9c0adf99e720cd
10.8.0.1 - - [02/Apr/2015 15:03:33] "GET /a5885abc84d361803f58ede1ef9c0adf99e720cd HTTP/1.1" 200 -
session user: Test-Client
session key:  a5885abc84d361803f58ede1ef9c0adf99e720cd

HTTP_SERVER:
http-client.py
<html><body><h1>Greetings Test-Client. You are authorized</h1></body></html>
