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Add additional validation to pusher URLs. (#8865) 

Pusher URLs now must end in `/_matrix/push/v1/notify` per the
specification.
This commit is contained in:
Patrick Cloke 2020-12-04 10:51:56 -05:00 committed by GitHub
parent df3e6a23a7
commit b774c555d8
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6 changed files with 107 additions and 31 deletions
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1
changelog.d/8865.bugfix Normal file
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@ -0,0 +1 @@
Add additional validation to pusher URLs to be compliant with the specification.

3
synapse/push/__init__.py
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@ -15,5 +15,4 @@
class PusherConfigException(Exception):
def __init__(self, msg):
super().__init__(msg)
"""An error occurred when creating a pusher."""

16
synapse/push/httppusher.py
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@ -14,6 +14,7 @@
# See the License for the specific language governing permissions and
# limitations under the License.
import logging
import urllib.parse
from prometheus_client import Counter
@ -97,9 +98,22 @@ class HttpPusher:
if self.data is None:
raise PusherConfigException("data can not be null for HTTP pusher")
# Validate that there's a URL and it is of the proper form.
if "url" not in self.data:
raise PusherConfigException("'url' required in data for HTTP pusher")
self.url = self.data["url"]
url = self.data["url"]
if not isinstance(url, str):
raise PusherConfigException("'url' must be a string")
url_parts = urllib.parse.urlparse(url)
# Note that the specification also says the scheme must be HTTPS, but
# it isn't up to the homeserver to verify that.
if url_parts.path != "/_matrix/push/v1/notify":
raise PusherConfigException(
"'url' must have a path of '/_matrix/push/v1/notify'"
)
self.url = url
self.http_client = hs.get_proxied_blacklisted_http_client()
self.data_minus_url = {}
self.data_minus_url.update(self.data)

108
tests/push/test_http.py
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@ -18,6 +18,7 @@ from twisted.internet.defer import Deferred
import synapse.rest.admin
from synapse.logging.context import make_deferred_yieldable
from synapse.push import PusherConfigException
from synapse.rest.client.v1 import login, room
from synapse.rest.client.v2_alpha import receipts
@ -34,6 +35,11 @@ class HTTPPusherTests(HomeserverTestCase):
user_id = True
hijack_auth = False
def default_config(self):
config = super().default_config()
config["start_pushers"] = True
return config
def make_homeserver(self, reactor, clock):
self.push_attempts = []
@ -46,15 +52,49 @@ class HTTPPusherTests(HomeserverTestCase):
m.post_json_get_json = post_json_get_json
config = self.default_config()
config["start_pushers"] = True
hs = self.setup_test_homeserver(
config=config, proxied_blacklisted_http_client=m
)
hs = self.setup_test_homeserver(proxied_blacklisted_http_client=m)
return hs
def test_invalid_configuration(self):
"""Invalid push configurations should be rejected."""
# Register the user who gets notified
user_id = self.register_user("user", "pass")
access_token = self.login("user", "pass")
# Register the pusher
user_tuple = self.get_success(
self.hs.get_datastore().get_user_by_access_token(access_token)
)
token_id = user_tuple.token_id
def test_data(data):
self.get_failure(
self.hs.get_pusherpool().add_pusher(
user_id=user_id,
access_token=token_id,
kind="http",
app_id="m.http",
app_display_name="HTTP Push Notifications",
device_display_name="pushy push",
pushkey="a@example.com",
lang=None,
data=data,
),
PusherConfigException,
)
# Data must be provided with a URL.
test_data(None)
test_data({})
test_data({"url": 1})
# A bare domain name isn't accepted.
test_data({"url": "example.com"})
# A URL without a path isn't accepted.
test_data({"url": "http://example.com"})
# A url with an incorrect path isn't accepted.
test_data({"url": "http://example.com/foo"})
def test_sends_http(self):
"""
The HTTP pusher will send pushes for each message to a HTTP endpoint
@ -84,7 +124,7 @@ class HTTPPusherTests(HomeserverTestCase):
device_display_name="pushy push",
pushkey="a@example.com",
lang=None,
data={"url": "example.com"},
data={"url": "http://example.com/_matrix/push/v1/notify"},
)
)
@ -119,7 +159,9 @@ class HTTPPusherTests(HomeserverTestCase):
# One push was attempted to be sent -- it'll be the first message
self.assertEqual(len(self.push_attempts), 1)
self.assertEqual(self.push_attempts[0][1], "example.com")
self.assertEqual(
self.push_attempts[0][1], "http://example.com/_matrix/push/v1/notify"
)
self.assertEqual(
self.push_attempts[0][2]["notification"]["content"]["body"], "Hi!"
)
@ -139,7 +181,9 @@ class HTTPPusherTests(HomeserverTestCase):
# Now it'll try and send the second push message, which will be the second one
self.assertEqual(len(self.push_attempts), 2)
self.assertEqual(self.push_attempts[1][1], "example.com")
self.assertEqual(
self.push_attempts[1][1], "http://example.com/_matrix/push/v1/notify"
)
self.assertEqual(
self.push_attempts[1][2]["notification"]["content"]["body"], "There!"
)
@ -196,7 +240,7 @@ class HTTPPusherTests(HomeserverTestCase):
device_display_name="pushy push",
pushkey="a@example.com",
lang=None,
data={"url": "example.com"},
data={"url": "http://example.com/_matrix/push/v1/notify"},
)
)
@ -232,7 +276,9 @@ class HTTPPusherTests(HomeserverTestCase):
# Check our push made it with high priority
self.assertEqual(len(self.push_attempts), 1)
self.assertEqual(self.push_attempts[0][1], "example.com")
self.assertEqual(
self.push_attempts[0][1], "http://example.com/_matrix/push/v1/notify"
)
self.assertEqual(self.push_attempts[0][2]["notification"]["prio"], "high")
# Add yet another person — we want to make this room not a 1:1
@ -270,7 +316,9 @@ class HTTPPusherTests(HomeserverTestCase):
# Advance time a bit, so the pusher will register something has happened
self.pump()
self.assertEqual(len(self.push_attempts), 2)
self.assertEqual(self.push_attempts[1][1], "example.com")
self.assertEqual(
self.push_attempts[1][1], "http://example.com/_matrix/push/v1/notify"
)
self.assertEqual(self.push_attempts[1][2]["notification"]["prio"], "high")
def test_sends_high_priority_for_one_to_one_only(self):
@ -312,7 +360,7 @@ class HTTPPusherTests(HomeserverTestCase):
device_display_name="pushy push",
pushkey="a@example.com",
lang=None,
data={"url": "example.com"},
data={"url": "http://example.com/_matrix/push/v1/notify"},
)
)
@ -328,7 +376,9 @@ class HTTPPusherTests(HomeserverTestCase):
# Check our push made it with high priority — this is a one-to-one room
self.assertEqual(len(self.push_attempts), 1)
self.assertEqual(self.push_attempts[0][1], "example.com")
self.assertEqual(
self.push_attempts[0][1], "http://example.com/_matrix/push/v1/notify"
)
self.assertEqual(self.push_attempts[0][2]["notification"]["prio"], "high")
# Yet another user joins
@ -347,7 +397,9 @@ class HTTPPusherTests(HomeserverTestCase):
# Advance time a bit, so the pusher will register something has happened
self.pump()
self.assertEqual(len(self.push_attempts), 2)
self.assertEqual(self.push_attempts[1][1], "example.com")
self.assertEqual(
self.push_attempts[1][1], "http://example.com/_matrix/push/v1/notify"
)
# check that this is low-priority
self.assertEqual(self.push_attempts[1][2]["notification"]["prio"], "low")
@ -394,7 +446,7 @@ class HTTPPusherTests(HomeserverTestCase):
device_display_name="pushy push",
pushkey="a@example.com",
lang=None,
data={"url": "example.com"},
data={"url": "http://example.com/_matrix/push/v1/notify"},
)
)
@ -410,7 +462,9 @@ class HTTPPusherTests(HomeserverTestCase):
# Check our push made it with high priority
self.assertEqual(len(self.push_attempts), 1)
self.assertEqual(self.push_attempts[0][1], "example.com")
self.assertEqual(
self.push_attempts[0][1], "http://example.com/_matrix/push/v1/notify"
)
self.assertEqual(self.push_attempts[0][2]["notification"]["prio"], "high")
# Send another event, this time with no mention
@ -419,7 +473,9 @@ class HTTPPusherTests(HomeserverTestCase):
# Advance time a bit, so the pusher will register something has happened
self.pump()
self.assertEqual(len(self.push_attempts), 2)
self.assertEqual(self.push_attempts[1][1], "example.com")
self.assertEqual(
self.push_attempts[1][1], "http://example.com/_matrix/push/v1/notify"
)
# check that this is low-priority
self.assertEqual(self.push_attempts[1][2]["notification"]["prio"], "low")
@ -467,7 +523,7 @@ class HTTPPusherTests(HomeserverTestCase):
device_display_name="pushy push",
pushkey="a@example.com",
lang=None,
data={"url": "example.com"},
data={"url": "http://example.com/_matrix/push/v1/notify"},
)
)
@ -487,7 +543,9 @@ class HTTPPusherTests(HomeserverTestCase):
# Check our push made it with high priority
self.assertEqual(len(self.push_attempts), 1)
self.assertEqual(self.push_attempts[0][1], "example.com")
self.assertEqual(
self.push_attempts[0][1], "http://example.com/_matrix/push/v1/notify"
)
self.assertEqual(self.push_attempts[0][2]["notification"]["prio"], "high")
# Send another event, this time as someone without the power of @room
@ -498,7 +556,9 @@ class HTTPPusherTests(HomeserverTestCase):
# Advance time a bit, so the pusher will register something has happened
self.pump()
self.assertEqual(len(self.push_attempts), 2)
self.assertEqual(self.push_attempts[1][1], "example.com")
self.assertEqual(
self.push_attempts[1][1], "http://example.com/_matrix/push/v1/notify"
)
# check that this is low-priority
self.assertEqual(self.push_attempts[1][2]["notification"]["prio"], "low")
@ -572,7 +632,7 @@ class HTTPPusherTests(HomeserverTestCase):
device_display_name="pushy push",
pushkey="a@example.com",
lang=None,
data={"url": "example.com"},
data={"url": "http://example.com/_matrix/push/v1/notify"},
)
)
@ -591,7 +651,9 @@ class HTTPPusherTests(HomeserverTestCase):
# Check our push made it
self.assertEqual(len(self.push_attempts), 1)
self.assertEqual(self.push_attempts[0][1], "example.com")
self.assertEqual(
self.push_attempts[0][1], "http://example.com/_matrix/push/v1/notify"
)
# Check that the unread count for the room is 0
#

8
tests/replication/test_pusher_shard.py
View File

@ -67,7 +67,7 @@ class PusherShardTestCase(BaseMultiWorkerStreamTestCase):
device_display_name="pushy push",
pushkey="a@example.com",
lang=None,
data={"url": "https://push.example.com/push"},
data={"url": "https://push.example.com/_matrix/push/v1/notify"},
)
)
@ -109,7 +109,7 @@ class PusherShardTestCase(BaseMultiWorkerStreamTestCase):
http_client_mock.post_json_get_json.assert_called_once()
self.assertEqual(
http_client_mock.post_json_get_json.call_args[0][0],
"https://push.example.com/push",
"https://push.example.com/_matrix/push/v1/notify",
)
self.assertEqual(
event_id,
@ -161,7 +161,7 @@ class PusherShardTestCase(BaseMultiWorkerStreamTestCase):
http_client_mock2.post_json_get_json.assert_not_called()
self.assertEqual(
http_client_mock1.post_json_get_json.call_args[0][0],
"https://push.example.com/push",
"https://push.example.com/_matrix/push/v1/notify",
)
self.assertEqual(
event_id,
@ -183,7 +183,7 @@ class PusherShardTestCase(BaseMultiWorkerStreamTestCase):
http_client_mock2.post_json_get_json.assert_called_once()
self.assertEqual(
http_client_mock2.post_json_get_json.call_args[0][0],
"https://push.example.com/push",
"https://push.example.com/_matrix/push/v1/notify",
)
self.assertEqual(
event_id,

2
tests/rest/admin/test_user.py
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@ -1256,7 +1256,7 @@ class PushersRestTestCase(unittest.HomeserverTestCase):
device_display_name="pushy push",
pushkey="a@example.com",
lang=None,
data={"url": "example.com"},
data={"url": "https://example.com/_matrix/push/v1/notify"},
)
)