diff --git a/changelog.d/5092.feature b/changelog.d/5092.feature
new file mode 100644
index 0000000000..c22f586d08
--- /dev/null
+++ b/changelog.d/5092.feature
@@ -0,0 +1 @@
+Added possibilty to disable local password authentication. Contributed by Daniel Hoffend.
diff --git a/docs/sample_config.yaml b/docs/sample_config.yaml
index 18be376e1e..a01e1152f7 100644
--- a/docs/sample_config.yaml
+++ b/docs/sample_config.yaml
@@ -1046,6 +1046,12 @@ password_config:
#
#enabled: false
+ # Uncomment to disable authentication against the local password
+ # database. This is ignored if `enabled` is false, and is only useful
+ # if you have other password_providers.
+ #
+ #localdb_enabled: false
+
# Uncomment and change to a secret random string for extra security.
# DO NOT CHANGE THIS AFTER INITIAL SETUP!
#
diff --git a/synapse/config/password.py b/synapse/config/password.py
index 598f84fc0c..d5b5953f2f 100644
--- a/synapse/config/password.py
+++ b/synapse/config/password.py
@@ -26,6 +26,7 @@ class PasswordConfig(Config):
password_config = {}
self.password_enabled = password_config.get("enabled", True)
+ self.password_localdb_enabled = password_config.get("localdb_enabled", True)
self.password_pepper = password_config.get("pepper", "")
def generate_config_section(self, config_dir_path, server_name, **kwargs):
@@ -35,6 +36,12 @@ class PasswordConfig(Config):
#
#enabled: false
+ # Uncomment to disable authentication against the local password
+ # database. This is ignored if `enabled` is false, and is only useful
+ # if you have other password_providers.
+ #
+ #localdb_enabled: false
+
# Uncomment and change to a secret random string for extra security.
# DO NOT CHANGE THIS AFTER INITIAL SETUP!
#
diff --git a/synapse/handlers/auth.py b/synapse/handlers/auth.py
index 97b21c4093..c8c1ed3246 100644
--- a/synapse/handlers/auth.py
+++ b/synapse/handlers/auth.py
@@ -743,7 +743,7 @@ class AuthHandler(BaseHandler):
result = (result, None)
defer.returnValue(result)
- if login_type == LoginType.PASSWORD:
+ if login_type == LoginType.PASSWORD and self.hs.config.password_localdb_enabled:
known_login_type = True
canonical_user_id = yield self._check_local_password(
diff --git a/synapse/handlers/set_password.py b/synapse/handlers/set_password.py
index 5a0995d4fe..d90c9e0108 100644
--- a/synapse/handlers/set_password.py
+++ b/synapse/handlers/set_password.py
@@ -33,6 +33,9 @@ class SetPasswordHandler(BaseHandler):
@defer.inlineCallbacks
def set_password(self, user_id, newpassword, requester=None):
+ if not self.hs.config.password_localdb_enabled:
+ raise SynapseError(403, "Password change disabled", errcode=Codes.FORBIDDEN)
+
password_hash = yield self._auth_handler.hash(newpassword)
except_device_id = requester.device_id if requester else None
|