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#
# This file is licensed under the Affero General Public License (AGPL) version 3.
#
# Copyright 2023 The Matrix.org Foundation C.I.C.
# Copyright (C) 2023 New Vector, Ltd
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# See the GNU Affero General Public License for more details:
# <https://www.gnu.org/licenses/agpl-3.0.html>.
#
# Originally licensed under the Apache License, Version 2.0:
# <http://www.apache.org/licenses/LICENSE-2.0>.
#
# [This file includes modifications made by New Vector Limited]
#
#
from parameterized import parameterized
from synapse.http.proxy import (
HOP_BY_HOP_HEADERS_LOWERCASE,
parse_connection_header_value,
)
from tests.unittest import TestCase
def mix_case(s: str) -> str:
"""
Mix up the case of each character in the string (upper or lower case)
"""
return "".join(c.upper() if i % 2 == 0 else c.lower() for i, c in enumerate(s))
class ProxyTests(TestCase):
@parameterized.expand(
[
[b"close, X-Foo, X-Bar", {"close", "x-foo", "x-bar"}],
# No whitespace
[b"close,X-Foo,X-Bar", {"close", "x-foo", "x-bar"}],
# More whitespace
[b"close, X-Foo, X-Bar", {"close", "x-foo", "x-bar"}],
# "close" directive in not the first position
[b"X-Foo, X-Bar, close", {"x-foo", "x-bar", "close"}],
# Normalizes header capitalization
[b"keep-alive, x-fOo, x-bAr", {"keep-alive", "x-foo", "x-bar"}],
# Handles header names with whitespace
[
b"keep-alive, x foo, x bar",
{"keep-alive", "x foo", "x bar"},
],
# Make sure we handle all of the hop-by-hop headers
[
mix_case(", ".join(HOP_BY_HOP_HEADERS_LOWERCASE)).encode("ascii"),
HOP_BY_HOP_HEADERS_LOWERCASE,
],
]
)
def test_parse_connection_header_value(
self,
connection_header_value: bytes,
expected_extra_headers_to_remove: set[str],
) -> None:
"""
Tests that the connection header value is parsed correctly
"""
self.assertIncludes(
expected_extra_headers_to_remove,
parse_connection_header_value(connection_header_value),
exact=True,
)
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