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diff --git a/bonafide/.gitignore b/bonafide/.gitignore new file mode 100644 index 00000000..0e26c096 --- /dev/null +++ b/bonafide/.gitignore @@ -0,0 +1,9 @@ +*.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 new file mode 100644 index 00000000..bc08fe2e --- /dev/null +++ b/bonafide/LICENSE @@ -0,0 +1,619 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/> + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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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 |