def authenticate(self, username, password):
"""
Verifies that a password matches the stored password for that username.
If verification passes, the matching user instance is returned
"""
PraetorianError.require_condition(
self.user_class is not None,
"Praetorian must be initialized before this method is available",
)
user = self.user_class.lookup(username)
MissingUserError.require_condition(
user is not None,
'Could not find the requested user',
)
AuthenticationError.require_condition(
self._verify_password(password, user.password),
'The password is incorrect',
)
"""
If we are set to PRAETORIAN_HASH_AUTOUPDATE then check our hash
and if needed, update the user. The developer is responsible
for using the returned user object and updating the data
storage endpoint.
Else, if we are set to PRAETORIAN_HASH_AUTOTEST then check out hash
and return exception if our hash is using the wrong scheme,
but don't modify the user.
"""
if self.hash_autoupdate:
self.verify_and_update(user=user, password=password)
elif self.hash_autotest:
self.verify_and_update(user=user)
return user
def authenticate(self, username, password):
"""
Verifies that a password matches the stored password for that username.
If verification passes, the matching user instance is returned
"""
PraetorianError.require_condition(
self.user_class is not None,
"Praetorian must be initialized before this method is available",
)
user = self.user_class.lookup(username)
MissingUserError.require_condition(
user is not None,
'Could not find the requested user',
)
AuthenticationError.require_condition(
self._verify_password(password, user.password),
'The password is incorrect',
)
return user
def _check_user(self, user):
"""
Checks to make sure that a user is valid. First, checks that the user
is not None. If this check fails, a MissingUserError is raised. Next,
checks if the user has a validation method. If the method does not
exist, the check passes. If the method exists, it is called. If the
result of the call is not truthy, an InvalidUserError is raised
"""
MissingUserError.require_condition(
user is not None,
'Could not find the requested user',
)
user_validate_method = getattr(user, self.user_class_validation_method,
None)
if user_validate_method is None:
return
InvalidUserError.require_condition(
user_validate_method(),
"The user is not valid or has had access revoked",
)
def send_reset_email(self,
email,
template=None,
reset_sender=None,
reset_uri=None,
subject=None,
override_access_lifespan=None):
"""
Sends a password reset email to a user, containing a time expiring
token usable for validation. This requires your application
is initialized with a `mail` extension, which supports
Flask-Mail's `Message()` object and a `send()` method.
Returns a dict containing the information sent, along with the
`result` from mail send.
:param: email: The email address to attempt to
send to
:param: template: HTML Template for reset email.
If not provided, a stock entry is
used
:param: confirmation_sender: The sender that shoudl be attached
to the reset email. Overrides
the PRAETORIAN_RESET_SENDER
config setting
:param: confirmation_uri: The uri that should be visited to
complete password reset. Should
usually be a uri to a frontend or
external service that calls the
'validate_reset_token()' method in
the api to complete reset. Will
override the PRAETORIAN_RESET_URI
config setting
:param: subject: The reset email subject.
Will override the
PRAETORIAN_RESET_SUBJECT
config setting.
:param: override_access_lifespan: Overrides the JWT_ACCESS_LIFESPAN
to set an access lifespan for the
registration token.
"""
if subject is None:
subject = self.reset_subject
if reset_uri is None:
reset_uri = self.reset_uri
sender = reset_sender or self.reset_sender
user = self.user_class.lookup(email)
MissingUserError.require_condition(
user is not None,
'Could not find the requested user',
)
flask.current_app.logger.debug(
"Generating token with lifespan: {}".format(
override_access_lifespan))
custom_token = self.encode_jwt_token(
user,
override_access_lifespan=override_access_lifespan,
bypass_user_check=False,
is_reset_token=True,
)
return self.send_token_email(user.email,
user,
template,
reset_sender,
reset_uri,
subject,
custom_token=custom_token,
sender=sender)