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-rw-r--r--synapse/api/errors.py22
1 files changed, 21 insertions, 1 deletions
diff --git a/synapse/api/errors.py b/synapse/api/errors.py
index 5853a54c95..ee2a295300 100644
--- a/synapse/api/errors.py
+++ b/synapse/api/errors.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 # Copyright 2014-2016 OpenMarket Ltd
-# Copyright 2018 New Vector Ltd
+# Copyright 2017-2018 New Vector Ltd
+# Copyright 2019 The Matrix.org Foundation C.I.C.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -64,6 +65,13 @@ class Codes(object):
     EXPIRED_ACCOUNT = "ORG_MATRIX_EXPIRED_ACCOUNT"
     INVALID_SIGNATURE = "M_INVALID_SIGNATURE"
     USER_DEACTIVATED = "M_USER_DEACTIVATED"
+    PASSWORD_TOO_SHORT = "M_PASSWORD_TOO_SHORT"
+    PASSWORD_NO_DIGIT = "M_PASSWORD_NO_DIGIT"
+    PASSWORD_NO_UPPERCASE = "M_PASSWORD_NO_UPPERCASE"
+    PASSWORD_NO_LOWERCASE = "M_PASSWORD_NO_LOWERCASE"
+    PASSWORD_NO_SYMBOL = "M_PASSWORD_NO_SYMBOL"
+    PASSWORD_IN_DICTIONARY = "M_PASSWORD_IN_DICTIONARY"
+    WEAK_PASSWORD = "M_WEAK_PASSWORD"
 
 
 class CodeMessageException(RuntimeError):
@@ -421,6 +429,18 @@ class IncompatibleRoomVersionError(SynapseError):
         return cs_error(self.msg, self.errcode, room_version=self._room_version)
 
 
+class PasswordRefusedError(SynapseError):
+    """A password has been refused, either during password reset/change or registration.
+    """
+
+    def __init__(
+        self,
+        msg="This password doesn't comply with the server's policy",
+        errcode=Codes.WEAK_PASSWORD,
+    ):
+        super(PasswordRefusedError, self).__init__(code=400, msg=msg, errcode=errcode)
+
+
 class RequestSendFailed(RuntimeError):
     """Sending a HTTP request over federation failed due to not being able to
     talk to the remote server for some reason.