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-rw-r--r--synapse/util/__init__.py1
-rw-r--r--synapse/util/async_helpers.py1
-rw-r--r--synapse/util/caches/__init__.py1
-rw-r--r--synapse/util/caches/cached_call.py1
-rw-r--r--synapse/util/caches/deferred_cache.py1
-rw-r--r--synapse/util/caches/descriptors.py1
-rw-r--r--synapse/util/caches/dictionary_cache.py1
-rw-r--r--synapse/util/caches/expiringcache.py1
-rw-r--r--synapse/util/caches/lrucache.py1
-rw-r--r--synapse/util/caches/response_cache.py1
-rw-r--r--synapse/util/caches/stream_change_cache.py1
-rw-r--r--synapse/util/caches/ttlcache.py1
-rw-r--r--synapse/util/daemonize.py1
-rw-r--r--synapse/util/distributor.py1
-rw-r--r--synapse/util/file_consumer.py1
-rw-r--r--synapse/util/frozenutils.py1
-rw-r--r--synapse/util/hash.py2
-rw-r--r--synapse/util/iterutils.py1
-rw-r--r--synapse/util/jsonobject.py1
-rw-r--r--synapse/util/macaroons.py1
-rw-r--r--synapse/util/metrics.py1
-rw-r--r--synapse/util/module_loader.py1
-rw-r--r--synapse/util/msisdn.py1
-rw-r--r--synapse/util/patch_inline_callbacks.py1
-rw-r--r--synapse/util/ratelimitutils.py1
-rw-r--r--synapse/util/retryutils.py1
-rw-r--r--synapse/util/rlimit.py1
-rw-r--r--synapse/util/stringutils.py33
-rw-r--r--synapse/util/templates.py1
-rw-r--r--synapse/util/threepids.py1
-rw-r--r--synapse/util/versionstring.py1
-rw-r--r--synapse/util/wheel_timer.py1
32 files changed, 32 insertions, 33 deletions
diff --git a/synapse/util/__init__.py b/synapse/util/__init__.py
index 517686f0a6..0f84fa3f4e 100644
--- a/synapse/util/__init__.py
+++ b/synapse/util/__init__.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # Copyright 2014-2016 OpenMarket Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/synapse/util/async_helpers.py b/synapse/util/async_helpers.py
index c3b2d981ea..5c55bb0125 100644
--- a/synapse/util/async_helpers.py
+++ b/synapse/util/async_helpers.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # Copyright 2014-2016 OpenMarket Ltd
 # Copyright 2018 New Vector Ltd
 #
diff --git a/synapse/util/caches/__init__.py b/synapse/util/caches/__init__.py
index 48f64eeb38..46af7fa473 100644
--- a/synapse/util/caches/__init__.py
+++ b/synapse/util/caches/__init__.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # Copyright 2015, 2016 OpenMarket Ltd
 # Copyright 2019, 2020 The Matrix.org Foundation C.I.C.
 #
diff --git a/synapse/util/caches/cached_call.py b/synapse/util/caches/cached_call.py
index 3ee0f2317a..a301c9e89b 100644
--- a/synapse/util/caches/cached_call.py
+++ b/synapse/util/caches/cached_call.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # Copyright 2021 The Matrix.org Foundation C.I.C.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/synapse/util/caches/deferred_cache.py b/synapse/util/caches/deferred_cache.py
index dd392cf694..484097a48a 100644
--- a/synapse/util/caches/deferred_cache.py
+++ b/synapse/util/caches/deferred_cache.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # Copyright 2015, 2016 OpenMarket Ltd
 # Copyright 2018 New Vector Ltd
 # Copyright 2020 The Matrix.org Foundation C.I.C.
diff --git a/synapse/util/caches/descriptors.py b/synapse/util/caches/descriptors.py
index 4e84379914..ac4a078b26 100644
--- a/synapse/util/caches/descriptors.py
+++ b/synapse/util/caches/descriptors.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # Copyright 2015, 2016 OpenMarket Ltd
 # Copyright 2018 New Vector Ltd
 #
diff --git a/synapse/util/caches/dictionary_cache.py b/synapse/util/caches/dictionary_cache.py
index b3b413b02c..56d94d96ce 100644
--- a/synapse/util/caches/dictionary_cache.py
+++ b/synapse/util/caches/dictionary_cache.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # Copyright 2015, 2016 OpenMarket Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/synapse/util/caches/expiringcache.py b/synapse/util/caches/expiringcache.py
index 4dc3477e89..ac47a31cd7 100644
--- a/synapse/util/caches/expiringcache.py
+++ b/synapse/util/caches/expiringcache.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # Copyright 2015, 2016 OpenMarket Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/synapse/util/caches/lrucache.py b/synapse/util/caches/lrucache.py
index 20c8e2d9f5..a21d34fcb4 100644
--- a/synapse/util/caches/lrucache.py
+++ b/synapse/util/caches/lrucache.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # Copyright 2015, 2016 OpenMarket Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/synapse/util/caches/response_cache.py b/synapse/util/caches/response_cache.py
index 46ea8e0964..2529845c9e 100644
--- a/synapse/util/caches/response_cache.py
+++ b/synapse/util/caches/response_cache.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # Copyright 2016 OpenMarket Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/synapse/util/caches/stream_change_cache.py b/synapse/util/caches/stream_change_cache.py
index 644e9e778a..0469e7d120 100644
--- a/synapse/util/caches/stream_change_cache.py
+++ b/synapse/util/caches/stream_change_cache.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # Copyright 2016 OpenMarket Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/synapse/util/caches/ttlcache.py b/synapse/util/caches/ttlcache.py
index 96a8274940..c276107d56 100644
--- a/synapse/util/caches/ttlcache.py
+++ b/synapse/util/caches/ttlcache.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # Copyright 2015, 2016 OpenMarket Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/synapse/util/daemonize.py b/synapse/util/daemonize.py
index 23393cf49b..31b24dd188 100644
--- a/synapse/util/daemonize.py
+++ b/synapse/util/daemonize.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # Copyright (c) 2012, 2013, 2014 Ilya Otyutskiy <ilya.otyutskiy@icloud.com>
 # Copyright 2020 The Matrix.org Foundation C.I.C.
 #
diff --git a/synapse/util/distributor.py b/synapse/util/distributor.py
index 3c47285d05..1f803aef6d 100644
--- a/synapse/util/distributor.py
+++ b/synapse/util/distributor.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # Copyright 2014-2016 OpenMarket Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/synapse/util/file_consumer.py b/synapse/util/file_consumer.py
index 68dc632491..e946189f9a 100644
--- a/synapse/util/file_consumer.py
+++ b/synapse/util/file_consumer.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # Copyright 2018 New Vector Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/synapse/util/frozenutils.py b/synapse/util/frozenutils.py
index 5ca2e71e60..2ac7c2913c 100644
--- a/synapse/util/frozenutils.py
+++ b/synapse/util/frozenutils.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # Copyright 2014-2016 OpenMarket Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/synapse/util/hash.py b/synapse/util/hash.py
index 359168704e..ba676e1762 100644
--- a/synapse/util/hash.py
+++ b/synapse/util/hash.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-
 # Copyright 2019 The Matrix.org Foundation C.I.C.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/synapse/util/iterutils.py b/synapse/util/iterutils.py
index 98707c119d..6f73b1d56d 100644
--- a/synapse/util/iterutils.py
+++ b/synapse/util/iterutils.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # Copyright 2014-2016 OpenMarket Ltd
 # Copyright 2020 The Matrix.org Foundation C.I.C.
 #
diff --git a/synapse/util/jsonobject.py b/synapse/util/jsonobject.py
index e3a8ed5b2f..abc12f0837 100644
--- a/synapse/util/jsonobject.py
+++ b/synapse/util/jsonobject.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # Copyright 2014-2016 OpenMarket Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/synapse/util/macaroons.py b/synapse/util/macaroons.py
index 12cdd53327..f6ebfd7e7d 100644
--- a/synapse/util/macaroons.py
+++ b/synapse/util/macaroons.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # Copyright 2020 Quentin Gliech
 # Copyright 2021 The Matrix.org Foundation C.I.C.
 #
diff --git a/synapse/util/metrics.py b/synapse/util/metrics.py
index 019cfa17cc..6d14351bd2 100644
--- a/synapse/util/metrics.py
+++ b/synapse/util/metrics.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # Copyright 2016 OpenMarket Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/synapse/util/module_loader.py b/synapse/util/module_loader.py
index d184e2a90c..8acbe276e4 100644
--- a/synapse/util/module_loader.py
+++ b/synapse/util/module_loader.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # Copyright 2017 New Vector Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/synapse/util/msisdn.py b/synapse/util/msisdn.py
index c8bcbe297a..bbbdebf264 100644
--- a/synapse/util/msisdn.py
+++ b/synapse/util/msisdn.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # Copyright 2017 Vector Creations Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/synapse/util/patch_inline_callbacks.py b/synapse/util/patch_inline_callbacks.py
index d9f9ae99d6..eed0291cae 100644
--- a/synapse/util/patch_inline_callbacks.py
+++ b/synapse/util/patch_inline_callbacks.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # Copyright 2018 New Vector Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/synapse/util/ratelimitutils.py b/synapse/util/ratelimitutils.py
index 70d11e1ec3..a654c69684 100644
--- a/synapse/util/ratelimitutils.py
+++ b/synapse/util/ratelimitutils.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # Copyright 2015, 2016 OpenMarket Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/synapse/util/retryutils.py b/synapse/util/retryutils.py
index 4ab379e429..f9c370a814 100644
--- a/synapse/util/retryutils.py
+++ b/synapse/util/retryutils.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # Copyright 2015, 2016 OpenMarket Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/synapse/util/rlimit.py b/synapse/util/rlimit.py
index 207cd17c2a..bf812ab516 100644
--- a/synapse/util/rlimit.py
+++ b/synapse/util/rlimit.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # Copyright 2016 OpenMarket Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/synapse/util/stringutils.py b/synapse/util/stringutils.py
index 9ce7873ab5..cd82777f80 100644
--- a/synapse/util/stringutils.py
+++ b/synapse/util/stringutils.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # Copyright 2014-2016 OpenMarket Ltd
 # Copyright 2020 The Matrix.org Foundation C.I.C.
 #
@@ -133,6 +132,38 @@ def parse_and_validate_server_name(server_name: str) -> Tuple[str, Optional[int]
     return host, port
 
 
+def valid_id_server_location(id_server: str) -> bool:
+    """Check whether an identity server location, such as the one passed as the
+    `id_server` parameter to `/_matrix/client/r0/account/3pid/bind`, is valid.
+
+    A valid identity server location consists of a valid hostname and optional
+    port number, optionally followed by any number of `/` delimited path
+    components, without any fragment or query string parts.
+
+    Args:
+        id_server: identity server location string to validate
+
+    Returns:
+        True if valid, False otherwise.
+    """
+
+    components = id_server.split("/", 1)
+
+    host = components[0]
+
+    try:
+        parse_and_validate_server_name(host)
+    except ValueError:
+        return False
+
+    if len(components) < 2:
+        # no path
+        return True
+
+    path = components[1]
+    return "#" not in path and "?" not in path
+
+
 def parse_and_validate_mxc_uri(mxc: str) -> Tuple[str, Optional[int], str]:
     """Parse the given string as an MXC URI
 
diff --git a/synapse/util/templates.py b/synapse/util/templates.py
index 392dae4a40..38543dd1ea 100644
--- a/synapse/util/templates.py
+++ b/synapse/util/templates.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # Copyright 2021 The Matrix.org Foundation C.I.C.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/synapse/util/threepids.py b/synapse/util/threepids.py
index 43c2e0ac23..281c5be4fb 100644
--- a/synapse/util/threepids.py
+++ b/synapse/util/threepids.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # Copyright 2018 New Vector Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/synapse/util/versionstring.py b/synapse/util/versionstring.py
index ab7d03af3a..dfa30a6229 100644
--- a/synapse/util/versionstring.py
+++ b/synapse/util/versionstring.py
@@ -1,5 +1,4 @@
 #!/usr/bin/env python
-# -*- coding: utf-8 -*-
 # Copyright 2016 OpenMarket Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/synapse/util/wheel_timer.py b/synapse/util/wheel_timer.py
index be3b22469d..61814aff24 100644
--- a/synapse/util/wheel_timer.py
+++ b/synapse/util/wheel_timer.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # Copyright 2016 OpenMarket Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");