Allow re-using a UI auth validation for a period of time (#8970)

synapse/config/auth.py

@@ -0,0 +1,110 @@
+# -*- coding: utf-8 -*-
+# Copyright 2015, 2016 OpenMarket Ltd
+# Copyright 2020 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.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from ._base import Config
+
+
+class AuthConfig(Config):
+    """Password and login configuration
+    """
+
+    section = "auth"
+
+    def read_config(self, config, **kwargs):
+        password_config = config.get("password_config", {})
+        if password_config is None:
+            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", "")
+
+        # Password policy
+        self.password_policy = password_config.get("policy") or {}
+        self.password_policy_enabled = self.password_policy.get("enabled", False)
+
+        # User-interactive authentication
+        ui_auth = config.get("ui_auth") or {}
+        self.ui_auth_session_timeout = ui_auth.get("session_timeout", 0)
+
+    def generate_config_section(self, config_dir_path, server_name, **kwargs):
+        return """\
+        password_config:
+           # Uncomment to disable password login
+           #
+           #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!
+           #
+           #pepper: "EVEN_MORE_SECRET"
+
+           # Define and enforce a password policy. Each parameter is optional.
+           # This is an implementation of MSC2000.
+           #
+           policy:
+              # Whether to enforce the password policy.
+              # Defaults to 'false'.
+              #
+              #enabled: true
+
+              # Minimum accepted length for a password.
+              # Defaults to 0.
+              #
+              #minimum_length: 15
+
+              # Whether a password must contain at least one digit.
+              # Defaults to 'false'.
+              #
+              #require_digit: true
+
+              # Whether a password must contain at least one symbol.
+              # A symbol is any character that's not a number or a letter.
+              # Defaults to 'false'.
+              #
+              #require_symbol: true
+
+              # Whether a password must contain at least one lowercase letter.
+              # Defaults to 'false'.
+              #
+              #require_lowercase: true
+
+              # Whether a password must contain at least one lowercase letter.
+              # Defaults to 'false'.
+              #
+              #require_uppercase: true
+
+        ui_auth:
+            # The number of milliseconds to allow a user-interactive authentication
+            # session to be active.
+            #
+            # This defaults to 0, meaning the user is queried for their credentials
+            # before every action, but this can be overridden to alow a single
+            # validation to be re-used.  This weakens the protections afforded by
+            # the user-interactive authentication process, by allowing for multiple
+            # (and potentially different) operations to use the same validation session.
+            #
+            # Uncomment below to allow for credential validation to last for 15
+            # seconds.
+            #
+            #session_timeout: 15000
+        """