initial commit

skeleton for module

23 files changed, 1333 insertions, 0 deletions

diff --git a/bonafide/.gitignore b/bonafide/.gitignore
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--- /dev/null
+++ b/bonafide/.gitignore
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+*.pyc
+*.egg
+*.egg-info
+*.swp
+*.swo
+dist/
+build/
+MANIFEST
+_trial_temp
diff --git a/bonafide/AUTHORS b/bonafide/AUTHORS
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/bonafide/AUTHORS
diff --git a/bonafide/CHANGELOG b/bonafide/CHANGELOG
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/bonafide/CHANGELOG
diff --git a/bonafide/LICENSE b/bonafide/LICENSE
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index 00000000..bc08fe2e
--- /dev/null
+++ b/bonafide/LICENSE
@@ -0,0 +1,619 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
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+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
diff --git a/bonafide/README.rst b/bonafide/README.rst
new file mode 100644
index 00000000..510dc28e
--- /dev/null
+++ b/bonafide/README.rst
@@ -0,0 +1,6 @@
+Bonafide
+--------
+Secure user registration, authentication, and provider discovery for the LEAP
+applications.
+
+https://leap.se/en/docs/design/bonafide
diff --git a/bonafide/pkg/__init__.py b/bonafide/pkg/__init__.py
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/bonafide/pkg/__init__.py
diff --git a/bonafide/pkg/requirements.pip b/bonafide/pkg/requirements.pip
new file mode 100644
index 00000000..d9bbc3f6
--- /dev/null
+++ b/bonafide/pkg/requirements.pip
@@ -0,0 +1,3 @@
+srp
+twisted>=14.0.0
+service-identity
diff --git a/bonafide/pkg/utils.py b/bonafide/pkg/utils.py
new file mode 100644
index 00000000..521cd4ed
--- /dev/null
+++ b/bonafide/pkg/utils.py
@@ -0,0 +1,84 @@
+# -*- coding: utf-8 -*-
+# utils.py
+# Copyright (C) 2013 LEAP
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+"""
+Utils to help in the setup process
+"""
+
+import os
+import re
+import sys
+
+
+def get_reqs_from_files(reqfiles):
+    """
+    Returns the contents of the top requirement file listed as a
+    string list with the lines
+
+    @param reqfiles: requirement files to parse
+    @type reqfiles: list of str
+    """
+    for reqfile in reqfiles:
+        if os.path.isfile(reqfile):
+            return open(reqfile, 'r').read().split('\n')
+
+
+def parse_requirements(reqfiles=['requirements.txt',
+                                 'requirements.pip',
+                                 'pkg/requirements.pip']):
+    """
+    Parses the requirement files provided.
+
+    Checks the value of LEAP_VENV_SKIP_PYSIDE to see if it should
+    return PySide as a dep or not. Don't set, or set to 0 if you want
+    to install it through pip.
+
+    @param reqfiles: requirement files to parse
+    @type reqfiles: list of str
+    """
+
+    requirements = []
+    skip_pyside = os.getenv("LEAP_VENV_SKIP_PYSIDE", "0") != "0"
+    for line in get_reqs_from_files(reqfiles):
+        # -e git://foo.bar/baz/master#egg=foobar
+        if re.match(r'\s*-e\s+', line):
+            pass
+            # do not try to do anything with externals on vcs
+            # requirements.append(re.sub(r'\s*-e\s+.*#egg=(.*)$', r'\1',
+            # line))
+            # http://foo.bar/baz/foobar/zipball/master#egg=foobar
+        elif re.match(r'\s*https?:', line):
+            requirements.append(re.sub(r'\s*https?:.*#egg=(.*)$', r'\1',
+                                line))
+        # -f lines are for index locations, and don't get used here
+        elif re.match(r'\s*-f\s+', line):
+            pass
+
+        # argparse is part of the standard library starting with 2.7
+        # adding it to the requirements list screws distro installs
+        elif line == 'argparse' and sys.version_info >= (2, 7):
+            pass
+        elif line == 'PySide' and skip_pyside:
+            pass
+        # do not include comments
+        elif line.lstrip().startswith('#'):
+            pass
+        else:
+            if line != '':
+                requirements.append(line)
+
+    return requirements
diff --git a/bonafide/setup.cfg b/bonafide/setup.cfg
new file mode 100644
index 00000000..4a2ab2bb
--- /dev/null
+++ b/bonafide/setup.cfg
@@ -0,0 +1,10 @@
+[aliases]
+test = trial
+
+[pep8]
+exclude = versioneer.py,_version.py,*.egg,build,dist,docs
+ignore = E731
+
+[flake8]
+exclude = versioneer.py,_version.py,*.egg,build,dist,docs
+ignore = E731
diff --git a/bonafide/setup.py b/bonafide/setup.py
new file mode 100644
index 00000000..eef1541e
--- /dev/null
+++ b/bonafide/setup.py
@@ -0,0 +1,95 @@
+# -*- coding: utf-8 -*-
+# setup.py
+# Copyright (C) 2013 LEAP
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+"""
+setup file for leap.bonafide
+"""
+import re
+from setuptools import setup, find_packages
+
+from pkg import utils
+
+# XXX TODO --- update to versioneer 0.15  ---------------------
+#import versioneer
+#versioneer.versionfile_source = 'src/leap/bonafide/_version.py'
+#versioneer.versionfile_build = 'leap/common/_version.py'
+#versioneer.tag_prefix = ''  # tags are like 1.2.0
+#versioneer.parentdir_prefix = 'leap.bonafide-'
+# --------------------------------------------------------------
+
+parsed_reqs = utils.parse_requirements()
+
+
+trove_classifiers = [
+    "Development Status :: 3 - Alpha",
+    "Intended Audience :: Developers",
+    ("License :: OSI Approved :: GNU General "
+     "Public License v3 or later (GPLv3+)"),
+    "Operating System :: OS Independent",
+    "Programming Language :: Python",
+    "Programming Language :: Python :: 2.7",
+    "Topic :: Communications",
+    "Topic :: Security",
+    "Topic :: Utilities"
+]
+
+DOWNLOAD_BASE = ('https://github.com/leapcode/bonafide/'
+                 'archive/%s.tar.gz')
+
+#_versions = versioneer.get_versions()
+#VERSION = _versions['version']
+VERSION = '0.0.1'
+#VERSION_FULL = _versions['full']
+DOWNLOAD_URL = ""
+
+# get the short version for the download url
+#_version_short = re.findall('\d+\.\d+\.\d+', VERSION)
+#if len(_version_short) > 0:
+    #VERSION_SHORT = _version_short[0]
+    #DOWNLOAD_URL = DOWNLOAD_BASE % VERSION_SHORT
+#
+#cmdclass = versioneer.get_cmdclass()
+# ----------------------------------------------------------------
+
+try:
+    long_description = open('README.rst').read() + '\n\n\n' + \
+        open('CHANGELOG').read()
+except Exception:
+    long_description = ""
+
+setup(
+    name='leap.bonafide',
+    version=VERSION,
+    #cmdclass=cmdclass,
+    url='https://leap.se/',
+    #download_url=DOWNLOAD_URL,
+    license='GPLv3+',
+    author='The LEAP Encryption Access Project',
+    author_email='info@leap.se',
+    maintainer='Kali Kaneko',
+    maintainer_email='kali@leap.se',
+    description='Common files used by the LEAP project.',
+    long_description=long_description,
+    classifiers=trove_classifiers,
+    namespace_packages=["leap"],
+    package_dir={'': 'src'},
+    package_data={'': ['*.pem']},
+    packages=find_packages('src'),
+    test_suite='leap.bonafide.tests',
+    install_requires=parsed_reqs,
+    include_package_data=True,
+    zip_safe=False,
+)
diff --git a/bonafide/src/leap/__init__.py b/bonafide/src/leap/__init__.py
new file mode 100644
index 00000000..f48ad105
--- /dev/null
+++ b/bonafide/src/leap/__init__.py
@@ -0,0 +1,6 @@
+# See http://peak.telecommunity.com/DevCenter/setuptools#namespace-packages
+try:
+    __import__('pkg_resources').declare_namespace(__name__)
+except ImportError:
+    from pkgutil import extend_path
+    __path__ = extend_path(__path__, __name__)
diff --git a/bonafide/src/leap/bonafide/__init__.py b/bonafide/src/leap/bonafide/__init__.py
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/bonafide/src/leap/bonafide/__init__.py
diff --git a/bonafide/src/leap/bonafide/bootstrap.py b/bonafide/src/leap/bonafide/bootstrap.py
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/bonafide/src/leap/bonafide/bootstrap.py
diff --git a/bonafide/src/leap/bonafide/cred_srp.py b/bonafide/src/leap/bonafide/cred_srp.py
new file mode 100644
index 00000000..51888308
--- /dev/null
+++ b/bonafide/src/leap/bonafide/cred_srp.py
@@ -0,0 +1,158 @@
+# -*- coding: utf-8 -*-
+# srp_cred.py
+# Copyright (C) 2015 LEAP
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+"""
+Credential module for authenticating SRP requests against the LEAP platform.
+"""
+
+# ----------------- DOC ------------------------------------------------------
+# See examples of cred modules:
+# https://github.com/oubiwann-unsupported/txBrowserID/blob/master/browserid/checker.py
+# http://stackoverflow.com/questions/19171686/book-twisted-network-programming-essentials-example-9-1-does-not-work
+# ----------------- DOC ------------------------------------------------------
+
+from zope.interface import implements, implementer, Interface, Attribute
+
+from twisted.cred import portal, credentials, error as credError
+from twisted.cred.checkers import ICredentialsChecker
+from twisted.internet import defer, reactor
+
+from leap.bonafide.session import LeapSession
+
+
+@implementer(ICredentialsChecker)
+class SRPCredentialsChecker(object):
+
+    # TODO need to decide if the credentials that we pass here are per provider
+    # or not.
+    # I think it's better to have the credentials passed with the full user_id,
+    # and here split user/provider.
+    # XXX then we need to check if the provider is properly configured, to get
+    # the right api info AND the needed certificates.
+    # XXX might need to initialize credential checker with a ProviderAPI
+
+    credentialInterfaces = (credentials.IUsernamePassword,)
+
+    def requestAvatarId(self, credentials):
+        # TODO If we are already authenticated, we should just
+        # return the session object, somehow.
+        # XXX If not authenticated (ie, no cached credentials?)
+        # we pass credentials to srpauth.authenticate method
+        # another srpauth class should interface with the blocking srpauth
+        # library, and chain all the calls needed to do the handshake.
+        # Therefore:
+        # should keep reference to the srpauth instances somewhere
+        # TODO If we want to return an anonymous user (useful for getting the
+        # anon-vpn cert), we should return an empty tuple from here.
+
+        return defer.maybeDeferred(_get_leap_session(credentials)).addCallback(
+            self._check_srp_auth)
+
+    def _check_srp_auth(session, username):
+        if session.authenticated:
+            # is ok! --- should add it to some global cache?
+            return defer.succeed(username)
+        else:
+            return defer.fail(credError.UnauthorizedLogin(
+                "Bad username/password combination"))
+
+
+def _get_leap_session(credentials):
+    session = LeapSession(credentials)
+    d = session.handshake()
+    d.addCallback(lambda _: session.authenticate())
+    d.addCallback(lambda _: session)
+    return d
+
+
+class ILeapUserAvatar(Interface):
+
+    # TODO add attributes for username, uuid, token, session_id
+
+    def logout():
+        """
+        Clean up per-login resource allocated to this avatar.
+        """
+
+
+@implementer(ILeapUserAvatar)
+class LeapUserAvatar(object):
+
+    # TODO initialize with: username, uuid, token, session_id
+    # TODO initialize provider data (for api)
+    # TODO how does this relate to LeapSession? maybe we should get one passed?
+
+    def logout(self):
+
+        # TODO reset the (global?) srpauth object.
+        # https://leap.se/en/docs/design/bonafide#logout
+        # DELETE API_BASE/logout(.json)
+        pass
+
+
+class LeapAuthRealm(object):
+    """
+    The realm corresponds to an application domain and is in charge of avatars,
+    which are network-accessible business logic objects.
+    """
+
+    # TODO should be initialized with provider API objects.
+
+    implements(portal.IRealm)
+
+    def requestAvatar(self, avatarId, mind, *interfaces):
+
+        if ILeapUserAvatar in interfaces:
+            # XXX how should we get the details for the requested avatar?
+            avatar = LeapUserAvatar()
+            return ILeapUserAvatar, avatar, avatar.logout
+
+        raise NotImplementedError(
+            "This realm only supports the ILeapUserAvatar interface.")
+
+
+if __name__ == '__main__':
+
+    # from the browser-id implementation
+    #import sys
+    #def _done(res):
+        #print res
+        #reactor.stop()
+    #assertion = sys.argv[1]
+    #d = defer.Deferred()
+    #reactor.callLater(0, d.callback, "http://localhost:8081")
+    #d.addCallback(SRPCredentialsChecker)
+    #d.addCallback(lambda c: c.requestAvatarId(assertion))
+    #d.addBoth(_done)
+    #reactor.run()
+
+    # XXX move boilerplate to some bitmask-core template.
+
+    leap_realm = LeapAuthRealm()
+    # XXX should pass a provider mapping to realm too?
+
+    leap_portal = portal.Portal(leap_realm)
+
+    # XXX should we add an offline credentials checker, that's able
+    # to unlock local soledad sqlcipher backend?
+    # XXX should pass a provider mapping to credentials checker too?
+    srp_checker = SRPCredentialsChecker()
+    leap_portal.registerChecker(srp_checker)
+
+    # XXX tie this to some sample server...
+    reactor.listenTCP(8000, EchoFactory(leap_portal))
+    reactor.run()
diff --git a/bonafide/src/leap/bonafide/provider.py b/bonafide/src/leap/bonafide/provider.py
new file mode 100644
index 00000000..ca2ea1d6
--- /dev/null
+++ b/bonafide/src/leap/bonafide/provider.py
@@ -0,0 +1,58 @@
+# -*- coding: utf-8 -*-
+# provier.py
+# Copyright (C) 2015 LEAP
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+"""
+LEAP Provider API.
+"""
+
+
+class LeapProviderApi(object):
+    # TODO when should the provider-api object be created?
+
+    # XXX separate in auth-needing actions?
+    # XXX version this mapping !!!
+
+    actions = {
+        'signup': ('users', 'POST'),
+        'handshake': ('sessions', 'POST'),
+        'authenticate': ('sessions/{login}', 'PUT'),
+        'update_user': ('users/{uid}', 'PUT'),
+        'logout': ('logout', 'DELETE'),
+        'get_vpn_cert': ('cert', 'POST'),
+        'get_smtp_cert': ('smtp_cert', 'POST'),
+    }
+
+    def __init__(self, uri, version):
+        self.uri = uri
+        self.version = version
+
+    @property
+    def base_url(self):
+        return "https://{0}/{1}".format(self.uri, self.version)
+
+    # XXX split in two different methods?
+    def get_uri_and_method(self, action_name, **extra_params):
+        action = self.actions.get(action_name, None)
+        if not action:
+            raise ValueError("Requested a non-existent action for this API")
+        resource, method = action
+
+        uri = '{0}/{1}'.format(bytes(self.base_url), bytes(resource)).format(
+            **extra_params)
+        return uri, method
+
+    # XXX add a provider_domain property, just to check if it's the right
+    # provider domain?
diff --git a/bonafide/src/leap/bonafide/services/TODO b/bonafide/src/leap/bonafide/services/TODO
new file mode 100644
index 00000000..97dc639a
--- /dev/null
+++ b/bonafide/src/leap/bonafide/services/TODO
@@ -0,0 +1 @@
+# XXX this should be discoverable through the config.
diff --git a/bonafide/src/leap/bonafide/services/__init__.py b/bonafide/src/leap/bonafide/services/__init__.py
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/bonafide/src/leap/bonafide/services/__init__.py
diff --git a/bonafide/src/leap/bonafide/services/eip.py b/bonafide/src/leap/bonafide/services/eip.py
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/bonafide/src/leap/bonafide/services/eip.py
diff --git a/bonafide/src/leap/bonafide/services/mail.py b/bonafide/src/leap/bonafide/services/mail.py
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/bonafide/src/leap/bonafide/services/mail.py
diff --git a/bonafide/src/leap/bonafide/services/soledad.py b/bonafide/src/leap/bonafide/services/soledad.py
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/bonafide/src/leap/bonafide/services/soledad.py
diff --git a/bonafide/src/leap/bonafide/session.py b/bonafide/src/leap/bonafide/session.py
new file mode 100644
index 00000000..a113d0ac
--- /dev/null
+++ b/bonafide/src/leap/bonafide/session.py
@@ -0,0 +1,164 @@
+# -*- coding: utf-8 -*-
+# session.py
+# Copyright (C) 2015 LEAP
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+"""
+LEAP Session management.
+"""
+import cookielib
+import urllib
+
+from twisted.internet import defer, reactor, protocol
+from twisted.internet.ssl import Certificate
+from twisted.web.client import Agent, CookieAgent, HTTPConnectionPool
+from twisted.web.client import BrowserLikePolicyForHTTPS
+from twisted.web.http_headers import Headers
+from twisted.web.iweb import IBodyProducer
+from twisted.python import log
+from twisted.python.filepath import FilePath
+from twisted.python import log
+from zope.interface import implements
+
+from leap.bonafide import srp_auth
+
+
+class LeapSession(object):
+
+    def __init__(self, credentials, api, provider_cert):
+        # TODO check if an anonymous credentials is passed
+        # TODO -- we could decorate some methods so that they
+        # complain if we're not authenticated.
+
+        self.username = credentials.username
+        self.password = credentials.password
+
+        self._api = api
+        customPolicy = BrowserLikePolicyForHTTPS(
+            Certificate.loadPEM(FilePath(provider_cert).getContent()))
+
+        # BUG XXX See https://twistedmatrix.com/trac/ticket/7843
+        pool = HTTPConnectionPool(reactor, persistent=False)
+        agent = Agent(reactor, customPolicy, connectTimeout=30, pool=pool)
+        cookiejar = cookielib.CookieJar()
+        self._agent = CookieAgent(agent, cookiejar)
+
+        self._srp_auth = srp_auth.SRPAuthMechanism()
+        self._srp_user = None
+
+    @defer.inlineCallbacks
+    def authenticate(self):
+        srpuser, A = self._srp_auth.initialize(
+            self.username, self.password)
+        self._srp_user = srpuser
+
+        uri, method = self._api.get_uri_and_method('handshake')
+        log.msg("%s to %s" % (method, uri))
+        params = self._srp_auth.get_handshake_params(self.username, A)
+        handshake = yield httpRequest(self._agent, uri, values=params,
+                                      method=method)
+
+        M = self._srp_auth.process_handshake(srpuser, handshake)
+        uri, method = self._api.get_uri_and_method(
+            'authenticate', login=self.username)
+        log.msg("%s to %s" % (method, uri))
+        params = self._srp_auth.get_authentication_params(M, A)
+        auth = yield httpRequest(self._agent, uri, values=params,
+                                 method=method)
+
+        uuid, token, M2 = self._srp_auth.process_authentication(auth)
+        self._srp_auth.verify_authentication(srpuser, M2)
+        defer.succeed('ok')
+        # XXX get_session_id??
+        # XXX return defer.succeed
+
+    def is_authenticated(self):
+        if not self._srp_user:
+            return False
+        return self._srp_user.authenticated()
+
+
+def httpRequest(agent, url, values={}, headers={}, method='POST'):
+    headers['Content-Type'] = ['application/x-www-form-urlencoded']
+    data = urllib.urlencode(values)
+    d = agent.request(method, url, Headers(headers),
+                      StringProducer(data) if data else None)
+
+    def handle_response(response):
+        if response.code == 204:
+            d = defer.succeed('')
+        else:
+            class SimpleReceiver(protocol.Protocol):
+                def __init__(s, d):
+                    s.buf = ''
+                    s.d = d
+
+                def dataReceived(s, data):
+                    print "----> handle response: GOT DATA"
+                    s.buf += data
+
+                def connectionLost(s, reason):
+                    print "CONNECTION LOST ---", reason
+                    # TODO: test if reason is twisted.web.client.ResponseDone,
+                    # if not, do an errback
+                    s.d.callback(s.buf)
+
+            d = defer.Deferred()
+            response.deliverBody(SimpleReceiver(d))
+        return d
+
+    d.addCallback(handle_response)
+    return d
+
+
+class StringProducer(object):
+
+    implements(IBodyProducer)
+
+    def __init__(self, body):
+        self.body = body
+        self.length = len(body)
+
+    def startProducing(self, consumer):
+        consumer.write(self.body)
+        return defer.succeed(None)
+
+    def pauseProducing(self):
+        pass
+
+    def stopProducing(self):
+        pass
+
+if __name__ == "__main__":
+    from leap.bonafide import provider
+    from twisted.cred.credentials import UsernamePassword
+
+    api = provider.LeapProviderApi('api.cdev.bitmask.net:4430', 1)
+    credentials = UsernamePassword('test_deb_090', 'lalalala')
+
+    cdev_pem = '/home/kali/.config/leap/providers/cdev.bitmask.net/keys/ca/cacert.pem'
+    session = LeapSession(credentials, api, cdev_pem)
+
+    def print_result(result):
+        print "Auth OK"
+        print "result"
+
+    def cbShutDown(ignored):
+        reactor.stop()
+
+    d = session.authenticate()
+    d.addCallback(print_result)
+    d.addErrback(lambda f: log.err(f))
+    d.addBoth(cbShutDown)
+    reactor.run()
diff --git a/bonafide/src/leap/bonafide/srp_auth.py b/bonafide/src/leap/bonafide/srp_auth.py
new file mode 100644
index 00000000..ac2cd67b
--- /dev/null
+++ b/bonafide/src/leap/bonafide/srp_auth.py
@@ -0,0 +1,120 @@
+# -*- coding: utf-8 -*-
+# srp.py
+# Copyright (C) 2014 LEAP
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+"""
+SRP Authentication.
+"""
+
+import binascii
+import logging
+import json
+
+import srp
+
+logger = logging.getLogger(__name__)
+
+
+class SRPAuthMechanism(object):
+
+    """
+    Implement a protocol-agnostic SRP Authentication mechanism.
+    """
+
+    def initialize(self, username, password):
+        srp_user = srp.User(username.encode('utf-8'),
+                            password.encode('utf-8'),
+                            srp.SHA256, srp.NG_1024)
+        _, A = srp_user.start_authentication()
+        return srp_user, A
+
+    def get_handshake_params(self, username, A):
+        return {'login': bytes(username), 'A': binascii.hexlify(A)}
+
+    def process_handshake(self, srp_user, handshake_response):
+        challenge = json.loads(handshake_response)
+        self._check_for_errors(challenge)
+        salt = challenge.get('salt', None)
+        B = challenge.get('B', None)
+        unhex_salt, unhex_B = self._unhex_salt_B(salt, B)
+        M = srp_user.process_challenge(unhex_salt, unhex_B)
+        return M
+
+    def get_authentication_params(self, M, A):
+        # I think A is not used in the server side
+        return {'client_auth': binascii.hexlify(M), 'A': binascii.hexlify(A)}
+
+    def process_authentication(self, authentication_response):
+        auth = json.loads(authentication_response)
+        uuid = auth.get('id', None)
+        token = auth.get('token', None)
+        M2 = auth.get('M2', None)
+        self._check_auth_params(uuid, token, M2)
+        return uuid, token, M2
+
+    def verify_authentication(self, srp_user, M2):
+        unhex_M2 = _safe_unhexlify(M2)
+        srp_user.verify_session(unhex_M2)
+        assert srp_user.authenticated()
+
+    def _check_for_errors(self, challenge):
+        if 'errors' in challenge:
+            msg = challenge['errors']['base']
+            raise SRPAuthError(msg)
+
+    def _unhex_salt_B(self, salt, B):
+        if salt is None:
+            raise SRPAuthNoSalt()
+        if B is None:
+            raise SRPAuthNoB()
+        try:
+            unhex_salt = _safe_unhexlify(salt)
+            unhex_B = _safe_unhexlify(B)
+        except (TypeError, ValueError) as e:
+            raise SRPAuthBadDataFromServer(str(e))
+        return unhex_salt, unhex_B
+
+    def _check_auth_params(self, uuid, token, M2):
+        if not all((uuid, token, M2)):
+            msg = '%r' % (M2, uuid, token,)
+            raise SRPAuthBadDataFromServer(msg)
+
+    #XXX move to session -----------------------
+    def get_session_id(self, cookies):
+        return cookies.get('_session_id', None)
+    #XXX move to session -----------------------
+
+
+def _safe_unhexlify(val):
+    return binascii.unhexlify(val) \
+        if (len(val) % 2 == 0) else binascii.unhexlify('0' + val)
+
+
+class SRPAuthError(Exception):
+    """
+    Base exception for srp authentication errors
+    """
+
+
+class SRPAuthNoSalt(SRPAuthError):
+    message = 'The server didn\'t send the salt parameter'
+
+
+class SRPAuthNoB(SRPAuthError):
+    message = 'The server didn\'t send the B parameter'
+
+class SRPAuthBadDataFromServer(SRPAuthError):
+    pass
diff --git a/bonafide/src/leap/bonafide/tests/__init__.py b/bonafide/src/leap/bonafide/tests/__init__.py
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/bonafide/src/leap/bonafide/tests/__init__.py