remove the autovpn code (on a separate repository)

README.rst

+
+++++++
+autoca
+++++++
+
+
+A Certification Authority manager with a very simple API (and an HTTP
+web interface).
+
+Suitable for low-security authorities that can be used as a web
+service. For a practical example, see http://vpn.autistici.org/
+where it is used to provide OpenVPN short-term certificates.

autoca/newcert.py

-#!/usr/bin/python
-# An example of how to create a new certificate request with certutil
-# $Id$
-
-import os, sys
-import certutil
-import optparse
-import urllib
-import urllib2
-from OpenSSL import crypto
-
-
-AUTOCA_URL = "https://www.autistici.org/internalca"
-AUTOCA_CONF = "ca.yml"
-
-
-def main():
-    parser = optparse.OptionParser(usage="Usage: newcert [<OPTIONS>] <CN>")
-    parser.add_option("-c", "--config", dest="config_file", default=AUTOCA_CONF,
-                      help="Load CA configuration from this file")
-    parser.add_option("-u", "--ca-url", dest="ca_url", default=AUTOCA_URL,
-                      help="Set AutoCA endpoint URL")
-    parser.add_option("-o", "--output", dest="output_base", default="newcert",
-                      help="Set the name of the output files (minus the extension)")
-    opts, args = parser.parse_args()
-    if len(args) != 1:
-        parser.error("Wrong number of arguments")
-
-    cn = args[0]
-    ca = certutil.CA(opts.config_file, load=False)
-    pkey = ca.create_rsa_key_pair()
-    req = ca.create_cert_request(pkey, CN=cn)
-
-    key_file = "%s.key" % opts.output_base
-    csr_file = "%s.csr" % opts.output_base
-    crt_file = "%s.pem" % opts.output_base
-
-    csr = crypto.dump_certificate_request(crypto.FILETYPE_PEM, req)
-    open(key_file, "w").write(crypto.dump_privatekey(crypto.FILETYPE_PEM, pkey))
-    os.chmod(key_file, 0400)
-    open(csr_file, "w").write(csr)
-
-    data = urllib.urlencode({"cert": csr})
-    req = urllib2.urlopen(AUTOCA_URL + "/sign", data)
-    signed = req.read()
-    open(crt_file, "w").write(signed)
-
-    print "private key saved in %s" % key_file
-    print "public cert saved in %s" % crt_file
-
-
-if __name__ == "__main__":
-    main()

autovpn/README.rst

-
-AutoVPN
-=======
-
-A simple self-service OpenVPN infrastructure (with X.509 PKI).
-
-
-Installation
-------------
-
-The 'autovpn' Python package is bundled with 'autoca'.
-Once you've got the autoca/autovpn sources, just run::
-
-    $ sudo python setup.py install
-
-from the top-level directory.
-
-
-Configuration
--------------
-
-How to run the AutoVPN web application will depend on the deployment
-method that you choose (mod_wsgi, FastCGI, standalone HTTP server...).
-Examples of a few different drivers can be found in the apps/
-directory.
-
-In all cases though, you'll need to create a configuration file and
-point the application at it (for example using the VPN_APP_CONFIG
-environment variable). This file should define the following variables
-(using Python syntax):
-
-VPN_ENDPOINT
-  DNS name for the VPN server (use more than one A record for
-  crude load balancing)
-
-VPN_SITE_URL
-  The public URL for the AutoVPN web application
-
-VPN_CERT_VALIDITY
-  How many days should the generated certificates be valid for
-  (default: 7)
-
-VPN_DEFAULT_SUBJECT_ATTRS
-  A dictionary containing X.509 attributes to use as defaults for
-  the subject of the generated certificates. For example::
-
-    VPN_DEFAULT_SUBJECT_ATTRS = {'O': 'My VPN', 'C': 'IT'}
-
-  The app will only set the 'CN' attribute.
-
-There are two different options to connect to the CA, you can either
-connect to a remote autoca web application:
-
-VPN_CA_URL
-  URL of the remote autoca web application
-
-CA_SHARED_SECRET
-  (optional) the shared secret to use for authentication
-
-Otherwise, you can instantiate a CA that is local to the AutoVPN
-application itself (for simpler deployments):
-
-VPN_CA_ROOT
-  Base directory for the CA storage -- keep it private!
-
-VPN_CA_BITS
-  How many bits to use for the CA RSA key (default 4096)
-
-VPN_CA_SUBJECT
-  Dictionary with the X.509 CA subject attributes
-
-In this latter case, the autoca web application will be available
-under the /ca/ URL prefix.
-
-The VPN web application supports authentication (to control who has
-access to the certificate generation). To enable it, define the
-following variables:
-
-AUTH_ENABLE
-  Set this to True to enable authentication
-
-AUTH_FUNCTION
-  Set this to a function that should accept two arguments (username
-  and password) and return a True/Fals result.
-

autovpn/acct.py

-import json
-import optparse
-import redis
-import time
-
-
-def time2day(unix_stamp):
-    return time.strftime('%Y%m%d', time.gmtime(unix_stamp))
-
-
-class Accounting(object):
-
-    def __init__(self, local_db, aggr_db=None):
-        self._local_db = local_db
-        self._aggr_db = aggr_db or local_db
-
-    def add_connection(self, cn, conn_info):
-        data = json.dumps(conn_info)
-        local_pipe = self._local_db.pipeline()
-        local_pipe.sadd('in_cns', cn)
-        local_pipe.rpush('aggr_in:%s' % cn, data)
-        local_pipe.execute()
-
-    def get_connections(self, cn, n=0):
-        return (json.loads(x) for x in
-                self._aggr_db.lrange('connections:%s' % cn, 0, (n - 1)))
-
-    def aggregate(self, cn):
-        conns = []
-        local_pipe = self._local_db.pipeline()
-        while True:
-            try:
-                key = 'aggr_in:%s' % cn
-                local_pipe.watch(key)
-                for data in local_pipe.lrange(key, 0, -1):
-                    conns.append(data)
-                local_pipe.delete(key)
-                break
-            except redis.WatchError:
-                del conns[:]
-            finally:
-                local_pipe.reset()
-
-        # Compute daily aggregates, and copy the connection data to the master.
-        aggr = {}
-        pipe = self._aggr_db.pipeline()
-        pipe.sadd('all_cns', cn)
-        for data in conns:
-            pipe.lpush('connections:%s' % cn, data)
-            conn_info = json.loads(data)
-            day = time2day(conn_info['end_time'])
-            aggr_day = aggr.setdefault(day, {'conn_time': 0,
-                                             'bytes_sent': 0,
-                                             'bytes_recv': 0})
-            for attr in ('conn_time', 'bytes_recv', 'bytes_sent'):
-                aggr_day[attr] += conn_info[attr]
-        pipe.execute()
-
-        # Short return if there's nothing to do.
-        if not aggr:
-            return
-
-        # Aggregate values on the master server.
-        days = aggr.keys()
-        aggr_key = 'aggr:%s' % cn
-        pipe = self._aggr_db.pipeline()
-        while True:
-            try:
-                pipe.watch(aggr_key)
-                old_aggr = {}
-                for day, data in zip(days, pipe.hmget(aggr_key, days)):
-                    if data:
-                        old_aggr[day] = json.loads(data)
-                pipe.multi()
-                for day, aggr_data in aggr.iteritems():
-                    old_aggr_data = old_aggr.get(day, {})
-                    for attr in aggr_data:
-                        aggr_data[attr] += old_aggr_data.get(attr, 0)
-                    pipe.hset(aggr_key, day, json.dumps(aggr_data))
-                pipe.execute()
-                break
-            except redis.WatchError:
-                continue
-            finally:
-                pipe.reset()
-
-    def aggregate_all(self):
-        local_pipe = self._local_db.pipeline()
-        while True:
-            try:
-                local_pipe.watch('in_cns')
-                input_cns = local_pipe.smembers('in_cns')
-                local_pipe.delete('in_cns')
-                break
-            except redis.WatchError:
-                continue
-            finally:
-                local_pipe.reset()
-        for cn in input_cns:
-            self.aggregate(cn)
-
-    def get_aggregate_counts(self, cn, when=None):
-        if not when:
-            when = time.time()
-        day = time2day(when)
-        data = self._aggr_db.hget('aggr:%s' % cn, day)
-        if data:
-            return json.loads(data)
-        else:
-            return {'bytes_sent': 0, 'bytes_recv': 0, 'conn_time': 0}
-
-
-def str2kv(args):
-    return dict(x.split('=', 1) for x in args)
-
-
-def main():
-    parser = optparse.OptionParser()
-    parser.add_option('--db', dest='local_db', default='localhost',
-                      help='endpoint of the local Redis database')
-    parser.add_option('--aggr-db', dest='aggr_db',
-                      help='endpoint of the aggregate Redis database (optional)')
-    parser.add_option('--password', dest='password',
-                      help='Redis password (optional)')
-    opts, args = parser.parse_args()
-    if not args:
-        parser.error('No command specified')
-    cmd, args = args[0], args[1:]
-    if cmd == 'help':
-        parser.show_help()
-
-    local_db = redis.Redis(opts.local_db, password=opts.password)
-    if opts.aggr_db:
-        aggr_db = redis.Redis(opts.aggr_db, password=opts.password)
-    else:
-        aggr_db = None
-
-    acct = Accounting(local_db, aggr_db)
-    if cmd == 'connect':
-        if len(args) < 2:
-            parser.error('Syntax: connect <CN> <ATTR=VALUE>...')
-        cn = args[0]
-        conn_info = str2kv(args[1:])
-        for mandatory in ('bytes_sent', 'bytes_recv', 'remote_ip', 'conn_time'):
-            if mandatory not in conn_info:
-                parser.error('Missing mandatory attribute "%s"' % mandatory)
-        for int_attr in ('bytes_sent', 'bytes_recv', 'conn_time'):
-            conn_info[int_attr] = int(conn_info[int_attr])
-        conn_info['end_time'] = int(time.time())
-        conn_info['start_time'] = conn_info['end_time'] - conn_info['conn_time']
-        acct.add_connection(cn, conn_info)
-    elif cmd == 'aggregate':
-        if len(args) != 1:
-            parser.error('Syntax: aggregate <CN | "all">')
-        cn = args[0]
-        if cn == 'all':
-            acct.aggregate_all()
-        else:
-            acct.aggregate(cn)
-    elif cmd == 'get-aggr':
-        if len(args) != 1:
-            parser.error('Syntax: get-aggr <CN>')
-        cn = args[0]
-        result = acct.get_aggregate_counts(cn)
-        for key in sorted(result):
-            print '%s %d' % (key, result[key])
-    elif cmd == 'list':
-        if len(args) != 1:
-            parser.error('Syntax: list <CN>')
-        cn = args[0]
-        for conn in acct.get_connections(cn):
-            print '%s  %s  %-6d %-20s %-20s' % (
-                time.strftime('%Y/%m/%d %H:%M:%S', time.gmtime(conn['start_time'])),
-                time.strftime('%Y/%m/%d %H:%M:%S', time.gmtime(conn['end_time'])),
-                conn['conn_time'],
-                '%d/%d' % (conn['bytes_recv'], conn['bytes_sent']),
-                conn['remote_ip'])
-    else:
-        parser.error('Unknown command "%s"' % cmd)
-
-
-if __name__ == '__main__':
-    main()

autovpn/static/jquery.backstretch.min.js

-/*
- * jQuery Backstretch
- * Version 1.2.5
- * http://srobbin.com/jquery-plugins/jquery-backstretch/
- *
- * Add a dynamically-resized background image to the page
- *
- * Copyright (c) 2011 Scott Robbin (srobbin.com)
- * Dual licensed under the MIT and GPL licenses.
-*/
-(function(a){a.backstretch=function(l,b,j){function m(c){try{h={left:0,top:0},e=f.width(),d=e/k,d>=f.height()?(i=(d-f.height())/2,g.centeredY&&a.extend(h,{top:"-"+i+"px"})):(d=f.height(),e=d*k,i=(e-f.width())/2,g.centeredX&&a.extend(h,{left:"-"+i+"px"})),a("#backstretch, #backstretch img:not(.deleteable)").width(e).height(d).filter("img").css(h)}catch(b){}"function"==typeof c&&c()}var n={centeredX:!0,centeredY:!0,speed:0},c=a("#backstretch"),g=c.data("settings")||n;c.data("settings");var f="onorientationchange"in window?a(document):a(window),k,e,d,i,h;b&&"object"==typeof b&&a.extend(g,b);b&&"function"==typeof b&&(j=b);a(document).ready(function(){if(l){var b;0==c.length?c=a("<div />").attr("id","backstretch").css({left:0,top:0,position:"fixed",overflow:"hidden",zIndex:-999999,margin:0,padding:0,height:"100%",width:"100%"}):c.find("img").addClass("deleteable");b=a("<img />").css({position:"absolute",display:"none",margin:0,padding:0,border:"none",zIndex:-999999}).bind("load",function(b){var d=a(this),e;d.css({width:"auto",height:"auto"});e=this.width||a(b.target).width();b=this.height||a(b.target).height();k=e/b;m(function(){d.fadeIn(g.speed,function(){c.find(".deleteable").remove();"function"==typeof j&&j()})})}).appendTo(c);0==a("body #backstretch").length&&a("body").append(c);c.data("settings",g);b.attr("src",l);a(window).resize(m)}});return this}})(jQuery);
\ No newline at end of file

autovpn/static/style.css

-body {
-    background-color: white;
-    font-family: helvetica, arial, sans-serif;
-    margin-left: 0px;
-    margin-right: auto;
-    width: 100%;
-}
-
-#container {
-    width: 100%;
-    margin-right: 0;
-    margin-left: 0;
-    padding: 0;
-}
-
-h1 {
-    font-family: helvetica, arial, sans-serif;
-    font-size: 6em;
-    color: red;
-    padding: 10px;
-    width: 50%;
-    background: url(/static/ant.jpg) white no-repeat top left;
-    opacity: 0.9;
-}
-
-h1 span {
-    display: block;
-    padding-left: 150px;
-}
-
-#content {
-    background-color: rgba(128,128,128,0.9);
-    font-weight: bold;
-    color: #FFF;
-    padding: 10px;
-    width: 50%;
-    font-size: 1.2em;
-}
-
-a {
-    text-decoration: underline;
-    color: white;
-}
-
-a:hover {
-    text-decoration: underline;
-}
-
-.footer {
-    font-size: 0.8em;
-    color: #AAA;
-    text-align: right;
-    padding-right: 5px;
-    margin-top: 20px;
-}
-
-.footer a { 
-    text-decoration: none;
-}
-
-input {
-    font-size: 1.2em;
-}
-
-.center {
-    text-align: center;
-}
-

autovpn/templates/_base.html

-<!doctype html>
-<html>
-  <head>
-    <title>A/I VPN</title>
-    <link href="/static/favicon.ico" type="image/x-icon" rel="shortcut icon">
-    <link rel="stylesheet" type="text/css" href="/static/style.css">
-    <script type="text/javascript"
-            src="/static/jquery-1.6.4.min.js"></script>
-    <script type="text/javascript"
-            src="/static/jquery.backstretch.min.js"></script>
-    <script>
-      $(document).ready(function() {
-        $.backstretch('/static/background.jpg');
-      });
-    </script>
-{% block head %}{% endblock -%}
-  </head>
-  <body>
-
-    <div id="container">
-
-      <h1>
-        <span>VPN</span>
-      </h1>
-
-      <div id="content">
-        {% block content %}{% endblock %}
-
-        {% if config.get('FOOTER') %}{{ config['FOOTER'] | safe }}{% endif %}
-      </div>
-
-    </div>
-
-  </body>
-</html>

autovpn/templates/download.html

-{% extends "_base.html" %}
-{% set dl_url = url_for('vpn_admin.new_cert_dl', _csrf=csrf_token(), t=cn_token) %}
-{% block head %}
-  <meta http-equiv="refresh" content="2; url={{ dl_url }}">
-{% endblock %}
-{% block content %}
-
-    <p>
-      The download of the ZIP file should start in a few seconds.
-      If it doesn't work, try with 
-      <a href="{{ dl_url }}">this link</a> (note: it will only work
-      once).
-    </p>
-    <p>
-      If you have any trouble downloading the ZIP file, try clearing
-      the cookies in your browser and
-      <a href="{{ url_for('vpn_admin.index') }}">starting over</a>.
-    </p>
-    <p>
-      <b>This ZIP file is VERY IMPORTANT, do not
-        share it with anyone, and save it only on trusted media.</b>
-    </p>
-
-{% endblock %}

autovpn/templates/download_retry.html

-{% extends "_base.html" %}
-{% block content %}
-
-    <p>
-      Sorry, you are trying to re-use an expired session. If you are
-      trying to download a certificate, it probably means that the
-      file is already on your computer, check in your Downloads
-      folder.
-    </p>
-    <p>
-      Otherwise, you should 
-      <a href="{{ url_for('vpn_admin.index') }}">start the process
-        from scratch</a> (it's easy anyway!)
-    </p>
-
-{% endblock %}

autovpn/templates/index.html

-{% extends "_base.html" %}
-{% block content %}
-        <p>
-          A reasonably anonymous (but low-traffic) VPN service, for when
-          you really need to get on the Internet from a nasty place!
-        </p>
-
-        <p>
-          You only need a SSL certificate to connect, click the link
-          below to download a ZIP file containing the certificate and
-          a private key.
-        </p>
-
-        <form action="{{ url_for('vpn_admin.new_cert') }}" method="post">
-          <div style="display:none;">
-            <input type="hidden" name="_csrf" value="{{ csrf_token() }}">
-          </div>
-          <p class="center">
-            <input type="submit" value="  Generate new SSL certificate  ">
-          </p>
-        </form>
-
-        {% if config.get('HELP_MESSAGE') %}
-          {{ config['HELP_MESSAGE'] | safe }}
-        {% endif %}
-
-{% endblock %}

autovpn/templates/login.html

-{% extends "_base.html" %}
-{% block content %}
-
-        <p>
-          {% if config.get('AUTH_MESSAGE') %}
-            {{ config['AUTH_MESSAGE'] | safe }}
-          {% else %}
-            Enter your authentication credentials:
-          {% endif %}
-        </p>
-
-        {% if error %}
-        <p class="center" style="color:red;">{{ error }}</p>
-        {% endif %}
-
-        <form action="{{ url_for('vpn_admin.login') }}" method="post">
-          <div style="display:none;">
-            <input type="hidden" name="_csrf" value="{{ csrf_token() }}">
-          </div>
-          <p class="center">
-            <input type="text" size="20" placeholder="Email" 
-                   name="username" value="{{ username }}"><br>
-            <input type="password" size="20" placeholder="Password"
-                   name="password"><br>
-            <input type="submit" value="Login">
-          </p>
-        </form>
-
-        <p>
-          <b>NOTE:</b> the credentials are only used to limit access
-          to this application. They will not be saved, nor they will
-          ever be associated with the VPN connection.
-        </p>
-
-{% endblock %}

autovpn/test/test_vpn_app.py

-import tempfile
-import shutil
-import unittest
-from flask import session
-from autovpn import vpn_app
-
-
-class VpnAppTest(unittest.TestCase):
-
-    def setUp(self):
-        self.tmpdir = tempfile.mkdtemp()
-        self.config = {
-            'DEBUG': 'true',
-            'SECRET_KEY': 'somesecret',
-            'SIGNER_SECRET': 'abracadabra',
-            'CACHE_DIR': self.tmpdir,
-            'VPN_CA_ROOT': self.tmpdir,
-            'VPN_CA_SUBJECT': {'CN': 'test CA', 'O': 'test'},
-            'VPN_CA_BITS': 1024,
-            'VPN_ENDPOINT': 'vpn.example.com',
-            'VPN_SITE_URL': 'http://localhost:4000/',
-            'FOOTER': '''
-<p class="footer">
-  built by <a href="http://www.autistici.org/">autistici.org</a>
-</p>
-''',
-            'AUTH_ENABLE': True,
-            'AUTH_FUNCTION': lambda x, y: (x and y and x == y),
-            'TLS_AUTH_KEY': self.tmpdir + '/tlsauth.key',
-            }
-
-        self.app = vpn_app.make_app(self.config)
-
-    def tearDown(self):
-        shutil.rmtree(self.tmpdir)
-
-    def test_login_ok(self):
-        with self.app.test_client() as c:
-            rv = c.get('/login')
-            csrf = session['_csrf']
-            rv = c.post('/login', data={
-                    '_csrf': csrf,
-                    'username': 'admin',
-                    'password': 'admin'},
-                        follow_redirects=True)
-            self.assertTrue('download of the ZIP file' in rv.data)
-
-    def test_login_fail(self):
-        with self.app.test_client() as c:
-            rv = c.get('/login')
-            csrf = session['_csrf']
-            rv = c.post('/login', data={
-                    '_csrf': csrf,
-                    'username': 'user',
-                    'password': 'wrong password'},
-                        follow_redirects=True)
-            self.assertFalse(session.get('dl_ok'))
-            self.assertTrue('Authentication failed' in rv.data)
-
-    def test_cert_dl(self):
-        cn = 'testcn1234'
-        t = self.app.signer.encode(cn)
-        with self.app.test_client() as c:
-            with c.session_transaction() as sess:
-                sess['dl_ok'] = True