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Merge pull request #1160 from matrix-org/rav/401_on_password_fail
Interactive Auth: Return 401 from for incorrect password
This commit is contained in:
Richard van der Hoff
GitHub
commit
8681aff4f1
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@ -59,7 +59,6 @@ class AuthHandler(BaseHandler):
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}
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self.bcrypt_rounds = hs.config.bcrypt_rounds
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self.sessions = {}
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self.INVALID_TOKEN_HTTP_STATUS = 401
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self.ldap_enabled = hs.config.ldap_enabled
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if self.ldap_enabled:
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@ -149,13 +148,19 @@ class AuthHandler(BaseHandler):
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creds = session['creds']
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# check auth type currently being presented
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errordict = {}
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if 'type' in authdict:
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if authdict['type'] not in self.checkers:
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raise LoginError(400, "", Codes.UNRECOGNIZED)
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result = yield self.checkers[authdict['type']](authdict, clientip)
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if result:
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creds[authdict['type']] = result
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self._save_session(session)
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try:
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result = yield self.checkers[authdict['type']](authdict, clientip)
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if result:
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creds[authdict['type']] = result
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self._save_session(session)
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except LoginError, e:
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# this step failed. Merge the error dict into the response
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# so that the client can have another go.
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errordict = e.error_dict()
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for f in flows:
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if len(set(f) - set(creds.keys())) == 0:
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@ -164,6 +169,7 @@ class AuthHandler(BaseHandler):
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ret = self._auth_dict_for_flows(flows, session)
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ret['completed'] = creds.keys()
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ret.update(errordict)
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defer.returnValue((False, ret, clientdict, session['id']))
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@defer.inlineCallbacks
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@ -431,37 +437,40 @@ class AuthHandler(BaseHandler):
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defer.Deferred: (str) canonical_user_id, or None if zero or
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multiple matches
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"""
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try:
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res = yield self._find_user_id_and_pwd_hash(user_id)
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res = yield self._find_user_id_and_pwd_hash(user_id)
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if res is not None:
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defer.returnValue(res[0])
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except LoginError:
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defer.returnValue(None)
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defer.returnValue(None)
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@defer.inlineCallbacks
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def _find_user_id_and_pwd_hash(self, user_id):
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"""Checks to see if a user with the given id exists. Will check case
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insensitively, but will throw if there are multiple inexact matches.
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insensitively, but will return None if there are multiple inexact
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matches.
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Returns:
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tuple: A 2-tuple of `(canonical_user_id, password_hash)`
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None: if there is not exactly one match
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"""
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user_infos = yield self.store.get_users_by_id_case_insensitive(user_id)
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result = None
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if not user_infos:
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logger.warn("Attempted to login as %s but they do not exist", user_id)
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raise LoginError(403, "", errcode=Codes.FORBIDDEN)
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if len(user_infos) > 1:
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if user_id not in user_infos:
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logger.warn(
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"Attempted to login as %s but it matches more than one user "
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"inexactly: %r",
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user_id, user_infos.keys()
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)
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raise LoginError(403, "", errcode=Codes.FORBIDDEN)
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defer.returnValue((user_id, user_infos[user_id]))
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elif len(user_infos) == 1:
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# a single match (possibly not exact)
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result = user_infos.popitem()
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elif user_id in user_infos:
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# multiple matches, but one is exact
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result = (user_id, user_infos[user_id])
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else:
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defer.returnValue(user_infos.popitem())
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# multiple matches, none of them exact
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logger.warn(
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"Attempted to login as %s but it matches more than one user "
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"inexactly: %r",
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user_id, user_infos.keys()
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)
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defer.returnValue(result)
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@defer.inlineCallbacks
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def _check_password(self, user_id, password):
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@ -475,34 +484,45 @@ class AuthHandler(BaseHandler):
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Returns:
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(str) the canonical_user_id
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Raises:
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LoginError if the password was incorrect
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LoginError if login fails
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"""
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valid_ldap = yield self._check_ldap_password(user_id, password)
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if valid_ldap:
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defer.returnValue(user_id)
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result = yield self._check_local_password(user_id, password)
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defer.returnValue(result)
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canonical_user_id = yield self._check_local_password(user_id, password)
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if canonical_user_id:
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defer.returnValue(canonical_user_id)
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# unknown username or invalid password. We raise a 403 here, but note
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# that if we're doing user-interactive login, it turns all LoginErrors
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# into a 401 anyway.
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raise LoginError(
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403, "Invalid password",
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errcode=Codes.FORBIDDEN
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)
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@defer.inlineCallbacks
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def _check_local_password(self, user_id, password):
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"""Authenticate a user against the local password database.
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user_id is checked case insensitively, but will throw if there are
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user_id is checked case insensitively, but will return None if there are
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multiple inexact matches.
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Args:
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user_id (str): complete @user:id
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Returns:
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(str) the canonical_user_id
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Raises:
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LoginError if the password was incorrect
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(str) the canonical_user_id, or None if unknown user / bad password
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"""
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user_id, password_hash = yield self._find_user_id_and_pwd_hash(user_id)
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lookupres = yield self._find_user_id_and_pwd_hash(user_id)
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if not lookupres:
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defer.returnValue(None)
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(user_id, password_hash) = lookupres
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result = self.validate_hash(password, password_hash)
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if not result:
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logger.warn("Failed password login for user %s", user_id)
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raise LoginError(403, "", errcode=Codes.FORBIDDEN)
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defer.returnValue(None)
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defer.returnValue(user_id)
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def _ldap_simple_bind(self, server, localpart, password):
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