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authorIvan Alejandro <ivanalejandro0@gmail.com>2013-08-21 13:02:44 -0300
committerIvan Alejandro <ivanalejandro0@gmail.com>2013-08-23 11:25:03 -0300
commit1801a78f9d05ea9d2f3c0321f3b1cc257d1ad278 (patch)
treed174a9f396d8fda8e4a925b6838f9ef3cc3aa154 /src/leap/bitmask/crypto/srpauth.py
parent7001408dd893b5e8302c4ff8a0dfe63f50e283fa (diff)
Add password change feature.
Diffstat (limited to 'src/leap/bitmask/crypto/srpauth.py')
-rw-r--r--src/leap/bitmask/crypto/srpauth.py82
1 files changed, 82 insertions, 0 deletions
diff --git a/src/leap/bitmask/crypto/srpauth.py b/src/leap/bitmask/crypto/srpauth.py
index 7b91205f..41ce130a 100644
--- a/src/leap/bitmask/crypto/srpauth.py
+++ b/src/leap/bitmask/crypto/srpauth.py
@@ -134,6 +134,8 @@ class SRPAuth(QtCore.QObject):
A_KEY = "A"
CLIENT_AUTH_KEY = "client_auth"
SESSION_ID_KEY = "_session_id"
+ USER_VERIFIER_KEY = 'user[password_verifier]'
+ USER_SALT_KEY = 'user[password_salt]'
def __init__(self, provider_config):
"""
@@ -169,6 +171,10 @@ class SRPAuth(QtCore.QObject):
self._srp_user = None
self._srp_a = None
+ # User credentials stored for password changing checks
+ self._username = None
+ self._password = None
+
def _safe_unhexlify(self, val):
"""
Rounds the val to a multiple of 2 and returns the
@@ -438,6 +444,51 @@ class SRPAuth(QtCore.QObject):
def _threader(self, cb, res, *args, **kwargs):
return threads.deferToThread(cb, res, *args, **kwargs)
+ def change_password(self, current_password, new_password):
+ """
+ Changes the password for the currently logged user if the current
+ password match.
+ It requires to be authenticated.
+
+ Might raise:
+ SRPAuthBadPassword
+ requests.exceptions.HTTPError
+
+ :param current_password: the current password for the logged user.
+ :type current_password: str
+ :param new_password: the new password for the user
+ :type new_password: str
+ """
+ leap_assert(self.get_uid() is not None)
+
+ if current_password != self._password:
+ raise SRPAuthBadPassword
+
+ url = "%s/%s/users/%s.json" % (
+ self._provider_config.get_api_uri(),
+ self._provider_config.get_api_version(),
+ self.get_uid())
+
+ salt, verifier = self._srp.create_salted_verification_key(
+ self._username, new_password, self._hashfun, self._ng)
+
+ cookies = {self.SESSION_ID_KEY: self.get_session_id()}
+ user_data = {
+ self.USER_VERIFIER_KEY: binascii.hexlify(verifier),
+ self.USER_SALT_KEY: binascii.hexlify(salt)
+ }
+
+ change_password = self._session.put(
+ url, data=user_data,
+ verify=self._provider_config.get_ca_cert_path(),
+ cookies=cookies,
+ timeout=REQUEST_TIMEOUT)
+
+ # In case of non 2xx it raises HTTPError
+ change_password.raise_for_status()
+
+ self._password = new_password
+
def authenticate(self, username, password):
"""
Executes the whole authentication process for a user
@@ -454,6 +505,10 @@ class SRPAuth(QtCore.QObject):
"""
leap_assert(self.get_session_id() is None, "Already logged in")
+ # User credentials stored for password changing checks
+ self._username = username.lower()
+ self._password = password
+
d = threads.deferToThread(self._authentication_preprocessing,
username=username,
password=password)
@@ -565,6 +620,33 @@ class SRPAuth(QtCore.QObject):
d.addErrback(self._errback)
return d
+ def change_password(self, current_password, new_password):
+ """
+ Changes the user's password.
+
+ :param current_password: the current password of the user.
+ :type current_password: str
+ :param new_password: the new password for the user.
+ :type new_password: str
+
+ :returns: a defer to interact with.
+ :rtype: twisted.internet.defer.Deferred
+ """
+ d = threads.deferToThread(
+ self.__instance.change_password, current_password, new_password)
+ return d
+
+ def get_username(self):
+ """
+ Returns the username of the currently authenticated user or None if
+ no user is logged.
+
+ :rtype: str or None
+ """
+ if self.get_uid() is None:
+ return None
+ return self.__instance._username
+
def _gui_notify(self, _):
"""
Callback that notifies the UI with the proper signal.