working version of the fake provider.

wizard can now be completely tested against this.

1 files changed, 167 insertions, 8 deletions

diff --git a/src/leap/gui/firstrun/tests/integration/fake_provider.py b/src/leap/gui/firstrun/tests/integration/fake_provider.py
index 27886d3b..09c6c468 100755
--- a/src/leap/gui/firstrun/tests/integration/fake_provider.py
+++ b/src/leap/gui/firstrun/tests/integration/fake_provider.py
@@ -1,8 +1,8 @@
-#/usr/bin/env python
+#!/usr/bin/env python
 """A server faking some of the provider resources and apis,
-used for testing Leap Client requests.
+used for testing Leap Client requests
 
-Right needs that you create a subfolder named 'certs',
+It needs that you create a subfolder named 'certs',
 and that you place the following files:
 
 [ ] certs/leaptestscert.pem
@@ -14,10 +14,14 @@ and that you place the following files:
 [ ] eip-service.json
 
 """
+import binascii
 import json
 import os
 import sys
 
+# python SRP LIB (! important MUST be >=1.0.1 !)
+import srp
+
 # GnuTLS Example -- is not working as expected
 from gnutls import crypto
 from gnutls.constants import COMP_LZO, COMP_DEFLATE, COMP_NULL
@@ -27,6 +31,8 @@ from gnutls.interfaces.twisted import X509Credentials
 # But we DO NOT want to introduce this dependency.
 from OpenSSL import SSL
 
+from zope.interface import Interface, Attribute, implements
+
 from twisted.web.server import Site
 from twisted.web.static import File
 from twisted.web.resource import Resource
@@ -36,21 +42,173 @@ from twisted.internet import reactor
 # http://twistedmatrix.com/documents/current/web/howto/web-in-60/index.htmln
 # for more examples
 
+"""
+Testing the FAKE_API:
+#####################
+
+ 1) register an user
+ >> curl -d "user[login]=me" -d "user[password_salt]=foo" -d "user[password_verifier]=beef" http://localhost:8000/1/users.json
+ << {"errors": null}
+
+ 2) check that if you try to register again, it will fail:
+ >> curl -d "user[login]=me" -d "user[password_salt]=foo" -d "user[password_verifier]=beef" http://localhost:8000/1/users.json
+ << {"errors": {"login": "already taken!"}}
+
+"""
+
+# Globals to mock user/sessiondb
+
+USERDB = {}
+SESSIONDB = {}
+
+
+safe_unhexlify = lambda x: binascii.unhexlify(x) \
+    if (len(x) % 2 == 0) else binascii.unhexlify('0' + x)
+
+
+class IUser(Interface):
+    login = Attribute("User login.")
+    salt = Attribute("Password salt.")
+    verifier = Attribute("Password verifier.")
+    session = Attribute("Session.")
+    svr = Attribute("Server verifier.")
+
+
+class User(object):
+    implements(IUser)
+
+    def __init__(self, login, salt, verifier):
+        self.login = login
+        self.salt = salt
+        self.verifier = verifier
+        self.session = None
+
+    def set_server_verifier(self, svr):
+        self.svr = svr
+
+    def set_session(self, session):
+        SESSIONDB[session] = self
+        self.session = session
+
+
+class FakeUsers(Resource):
+    def __init__(self, name):
+        self.name = name
+
+    def render_POST(self, request):
+        args = request.args
+
+        login = args['user[login]'][0]
+        salt = args['user[password_salt]'][0]
+        verifier = args['user[password_verifier]'][0]
+
+        if login in USERDB:
+            return "%s\n" % json.dumps(
+                {'errors': {'login': 'already taken!'}})
+
+        print login, verifier, salt
+        user = User(login, salt, verifier)
+        USERDB[login] = user
+        return json.dumps({'errors': None})
+
+
+def get_user(request):
+    login = request.args.get('login')
+    if login:
+        user = USERDB.get(login[0], None)
+        if user:
+            return user
+
+    session = request.getSession()
+    user = SESSIONDB.get(session, None)
+    return user
+
 
 class FakeSession(Resource):
     def __init__(self, name):
         self.name = name
 
     def render_GET(self, request):
-        return json.dumps({'errors': None})
+        return "%s\n" % json.dumps({'errors': None})
 
     def render_POST(self, request):
-        return json.dumps(
-            {'salt': 'deadbeef', 'B': 'deadbeef', 'errors': None})
+
+        user = get_user(request)
+
+        if not user:
+            # XXX get real error from demo provider
+            return json.dumps({'errors': 'no such user'})
+
+        A = request.args['A'][0]
+
+        _A = safe_unhexlify(A)
+        _salt = safe_unhexlify(user.salt)
+        _verifier = safe_unhexlify(user.verifier)
+
+        svr = srp.Verifier(
+            user.login,
+            _salt,
+            _verifier,
+            _A,
+            hash_alg=srp.SHA256,
+            ng_type=srp.NG_1024)
+
+        s, B = svr.get_challenge()
+
+        _B = binascii.hexlify(B)
+
+        print 'login = %s' % user.login
+        print 'salt = %s' % user.salt
+        print 'len(_salt) = %s' % len(_salt)
+        print 'vkey = %s' % user.verifier
+        print 'len(vkey) = %s' % len(_verifier)
+        print 's = %s' % binascii.hexlify(s)
+        print 'B = %s' % _B
+        print 'len(B) = %s' % len(_B)
+
+        session = request.getSession()
+        user.set_session(session)
+        user.set_server_verifier(svr)
+
+        # yep, this is tricky.
+        # some things are *already* unhexlified.
+        data = {
+            'salt': user.salt,
+            'B': _B,
+            'errors': None}
+
+        return json.dumps(data)
 
     def render_PUT(self, request):
+
+        # XXX check session???
+        user = get_user(request)
+
+        if not user:
+            print 'NO USER'
+            return json.dumps({'errors': 'no such user'})
+
+        data = request.content.read()
+        auth = data.split("client_auth=")
+        M = auth[1] if len(auth) > 1 else None
+        # if not H, return
+        if not M:
+            return json.dumps({'errors': 'no M proof passed by client'})
+
+        svr = user.svr
+        HAMK = svr.verify_session(binascii.unhexlify(M))
+        if HAMK is None:
+            print 'verification failed!!!'
+            raise Exception("Authentication failed!")
+            #import ipdb;ipdb.set_trace()
+
+        assert svr.authenticated()
+        print "***"
+        print 'server authenticated user SRP!'
+        print "***"
+
         return json.dumps(
-            {'M2': 'deadbeef', 'errors': None})
+            {'M2': binascii.hexlify(HAMK), 'errors': None})
 
 
 class API_Sessions(Resource):
@@ -113,6 +271,7 @@ if __name__ == "__main__":
     apiv1 = Resource()
     apiv1.putChild("config", config)
     apiv1.putChild("sessions.json", API_Sessions())
+    apiv1.putChild("users.json", FakeUsers(None))
     apiv1.putChild("cert", File(get_certs_path() + '/openvpn.pem'))
     root.putChild("1", apiv1)
 
@@ -120,7 +279,7 @@ if __name__ == "__main__":
 
     factory = Site(root)
 
-    # regular http
+    # regular http (for debugging with curl)
     reactor.listenTCP(8000, factory)
 
     # TLS with gnutls --- seems broken :(