mirror of
https://git.anonymousland.org/anonymousland/synapse-product.git
synced 2024-10-01 08:25:44 -04:00
Merge branch 'develop' of github.com:matrix-org/synapse into erikj/power_level_sanity
This commit is contained in:
Erik Johnston
commit
016c089f13
@ -29,7 +29,7 @@ logger = logging.getLogger(__name__)
|
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AuthEventTypes = (
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EventTypes.Create, EventTypes.Member, EventTypes.PowerLevels,
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EventTypes.JoinRules,
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EventTypes.JoinRules, EventTypes.RoomHistoryVisibility,
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)
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@ -578,6 +578,7 @@ class Auth(object):
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levels_to_check = [
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("users_default", None),
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("events_default", None),
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("state_default", None),
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("ban", None),
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("redact", None),
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("kick", None),
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@ -75,6 +75,8 @@ class EventTypes(object):
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Redaction = "m.room.redaction"
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Feedback = "m.room.message.feedback"
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RoomHistoryVisibility = "m.room.history_visibility"
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# These are used for validation
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Message = "m.room.message"
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Topic = "m.room.topic"
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@ -25,11 +25,13 @@ from syutil.base64util import decode_base64, encode_base64
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from synapse.api.errors import SynapseError, Codes
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from synapse.util.retryutils import get_retry_limiter
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from synapse.util import unwrapFirstError
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from synapse.util.async import ObservableDeferred
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from OpenSSL import crypto
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from collections import namedtuple
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import urllib
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import hashlib
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import logging
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@ -38,6 +40,9 @@ import logging
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logger = logging.getLogger(__name__)
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KeyGroup = namedtuple("KeyGroup", ("server_name", "group_id", "key_ids"))
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class Keyring(object):
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def __init__(self, hs):
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self.store = hs.get_datastore()
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@ -49,141 +54,325 @@ class Keyring(object):
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self.key_downloads = {}
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@defer.inlineCallbacks
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def verify_json_for_server(self, server_name, json_object):
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logger.debug("Verifying for %s", server_name)
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key_ids = signature_ids(json_object, server_name)
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if not key_ids:
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raise SynapseError(
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400,
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"Not signed with a supported algorithm",
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Codes.UNAUTHORIZED,
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)
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try:
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verify_key = yield self.get_server_verify_key(server_name, key_ids)
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except IOError as e:
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logger.warn(
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"Got IOError when downloading keys for %s: %s %s",
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server_name, type(e).__name__, str(e.message),
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)
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raise SynapseError(
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502,
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"Error downloading keys for %s" % (server_name,),
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Codes.UNAUTHORIZED,
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)
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except Exception as e:
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logger.warn(
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"Got Exception when downloading keys for %s: %s %s",
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server_name, type(e).__name__, str(e.message),
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)
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raise SynapseError(
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401,
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"No key for %s with id %s" % (server_name, key_ids),
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Codes.UNAUTHORIZED,
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)
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return self.verify_json_objects_for_server(
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[(server_name, json_object)]
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)[0]
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try:
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verify_signed_json(json_object, server_name, verify_key)
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except:
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raise SynapseError(
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401,
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"Invalid signature for server %s with key %s:%s" % (
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server_name, verify_key.alg, verify_key.version
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),
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Codes.UNAUTHORIZED,
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)
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def verify_json_objects_for_server(self, server_and_json):
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"""Bulk verfies signatures of json objects, bulk fetching keys as
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necessary.
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@defer.inlineCallbacks
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def get_server_verify_key(self, server_name, key_ids):
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"""Finds a verification key for the server with one of the key ids.
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Trys to fetch the key from a trusted perspective server first.
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Args:
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server_name(str): The name of the server to fetch a key for.
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keys_ids (list of str): The key_ids to check for.
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server_and_json (list): List of pairs of (server_name, json_object)
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Returns:
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list of deferreds indicating success or failure to verify each
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json object's signature for the given server_name.
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"""
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cached = yield self.store.get_server_verify_keys(server_name, key_ids)
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group_id_to_json = {}
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group_id_to_group = {}
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group_ids = []
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if cached:
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defer.returnValue(cached[0])
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return
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next_group_id = 0
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deferreds = {}
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download = self.key_downloads.get(server_name)
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for server_name, json_object in server_and_json:
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logger.debug("Verifying for %s", server_name)
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group_id = next_group_id
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next_group_id += 1
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group_ids.append(group_id)
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if download is None:
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download = self._get_server_verify_key_impl(server_name, key_ids)
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download = ObservableDeferred(
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download,
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consumeErrors=True
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key_ids = signature_ids(json_object, server_name)
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if not key_ids:
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deferreds[group_id] = defer.fail(SynapseError(
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400,
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"Not signed with a supported algorithm",
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Codes.UNAUTHORIZED,
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))
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else:
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deferreds[group_id] = defer.Deferred()
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group = KeyGroup(server_name, group_id, key_ids)
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group_id_to_group[group_id] = group
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group_id_to_json[group_id] = json_object
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@defer.inlineCallbacks
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def handle_key_deferred(group, deferred):
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server_name = group.server_name
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try:
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_, _, key_id, verify_key = yield deferred
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except IOError as e:
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logger.warn(
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"Got IOError when downloading keys for %s: %s %s",
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server_name, type(e).__name__, str(e.message),
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)
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raise SynapseError(
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502,
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"Error downloading keys for %s" % (server_name,),
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Codes.UNAUTHORIZED,
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)
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except Exception as e:
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logger.exception(
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"Got Exception when downloading keys for %s: %s %s",
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server_name, type(e).__name__, str(e.message),
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)
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raise SynapseError(
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401,
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"No key for %s with id %s" % (server_name, key_ids),
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Codes.UNAUTHORIZED,
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)
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json_object = group_id_to_json[group.group_id]
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try:
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verify_signed_json(json_object, server_name, verify_key)
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except:
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raise SynapseError(
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401,
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"Invalid signature for server %s with key %s:%s" % (
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server_name, verify_key.alg, verify_key.version
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),
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Codes.UNAUTHORIZED,
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)
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server_to_deferred = {
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server_name: defer.Deferred()
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for server_name, _ in server_and_json
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}
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# We want to wait for any previous lookups to complete before
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# proceeding.
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wait_on_deferred = self.wait_for_previous_lookups(
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[server_name for server_name, _ in server_and_json],
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server_to_deferred,
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)
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# Actually start fetching keys.
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wait_on_deferred.addBoth(
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lambda _: self.get_server_verify_keys(group_id_to_group, deferreds)
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)
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# When we've finished fetching all the keys for a given server_name,
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# resolve the deferred passed to `wait_for_previous_lookups` so that
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# any lookups waiting will proceed.
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server_to_gids = {}
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def remove_deferreds(res, server_name, group_id):
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server_to_gids[server_name].discard(group_id)
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if not server_to_gids[server_name]:
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server_to_deferred.pop(server_name).callback(None)
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return res
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for g_id, deferred in deferreds.items():
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server_name = group_id_to_group[g_id].server_name
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server_to_gids.setdefault(server_name, set()).add(g_id)
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deferred.addBoth(remove_deferreds, server_name, g_id)
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# Pass those keys to handle_key_deferred so that the json object
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# signatures can be verified
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return [
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handle_key_deferred(
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group_id_to_group[g_id],
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deferreds[g_id],
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)
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self.key_downloads[server_name] = download
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@download.addBoth
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def callback(ret):
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del self.key_downloads[server_name]
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return ret
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r = yield download.observe()
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defer.returnValue(r)
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for g_id in group_ids
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]
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@defer.inlineCallbacks
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def _get_server_verify_key_impl(self, server_name, key_ids):
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keys = None
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def wait_for_previous_lookups(self, server_names, server_to_deferred):
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"""Waits for any previous key lookups for the given servers to finish.
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Args:
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server_names (list): list of server_names we want to lookup
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server_to_deferred (dict): server_name to deferred which gets
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resolved once we've finished looking up keys for that server
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"""
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while True:
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wait_on = [
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self.key_downloads[server_name]
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for server_name in server_names
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if server_name in self.key_downloads
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]
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if wait_on:
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yield defer.DeferredList(wait_on)
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else:
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break
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for server_name, deferred in server_to_deferred:
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self.key_downloads[server_name] = ObservableDeferred(deferred)
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def get_server_verify_keys(self, group_id_to_group, group_id_to_deferred):
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"""Takes a dict of KeyGroups and tries to find at least one key for
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each group.
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"""
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# These are functions that produce keys given a list of key ids
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key_fetch_fns = (
|
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self.get_keys_from_store, # First try the local store
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self.get_keys_from_perspectives, # Then try via perspectives
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self.get_keys_from_server, # Then try directly
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)
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@defer.inlineCallbacks
|
||||
def do_iterations():
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||||
merged_results = {}
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||||
|
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missing_keys = {
|
||||
group.server_name: key_id
|
||||
for group in group_id_to_group.values()
|
||||
for key_id in group.key_ids
|
||||
}
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|
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for fn in key_fetch_fns:
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||||
results = yield fn(missing_keys.items())
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merged_results.update(results)
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# We now need to figure out which groups we have keys for
|
||||
# and which we don't
|
||||
missing_groups = {}
|
||||
for group in group_id_to_group.values():
|
||||
for key_id in group.key_ids:
|
||||
if key_id in merged_results[group.server_name]:
|
||||
group_id_to_deferred[group.group_id].callback((
|
||||
group.group_id,
|
||||
group.server_name,
|
||||
key_id,
|
||||
merged_results[group.server_name][key_id],
|
||||
))
|
||||
break
|
||||
else:
|
||||
missing_groups.setdefault(
|
||||
group.server_name, []
|
||||
).append(group)
|
||||
|
||||
if not missing_groups:
|
||||
break
|
||||
|
||||
missing_keys = {
|
||||
server_name: set(
|
||||
key_id for group in groups for key_id in group.key_ids
|
||||
)
|
||||
for server_name, groups in missing_groups.items()
|
||||
}
|
||||
|
||||
for group in missing_groups.values():
|
||||
group_id_to_deferred[group.group_id].errback(SynapseError(
|
||||
401,
|
||||
"No key for %s with id %s" % (
|
||||
group.server_name, group.key_ids,
|
||||
),
|
||||
Codes.UNAUTHORIZED,
|
||||
))
|
||||
|
||||
def on_err(err):
|
||||
for deferred in group_id_to_deferred.values():
|
||||
if not deferred.called:
|
||||
deferred.errback(err)
|
||||
|
||||
do_iterations().addErrback(on_err)
|
||||
|
||||
return group_id_to_deferred
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def get_keys_from_store(self, server_name_and_key_ids):
|
||||
res = yield defer.gatherResults(
|
||||
[
|
||||
self.store.get_server_verify_keys(server_name, key_ids)
|
||||
for server_name, key_ids in server_name_and_key_ids
|
||||
],
|
||||
consumeErrors=True,
|
||||
).addErrback(unwrapFirstError)
|
||||
|
||||
defer.returnValue(dict(zip(
|
||||
[server_name for server_name, _ in server_name_and_key_ids],
|
||||
res
|
||||
)))
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def get_keys_from_perspectives(self, server_name_and_key_ids):
|
||||
@defer.inlineCallbacks
|
||||
def get_key(perspective_name, perspective_keys):
|
||||
try:
|
||||
result = yield self.get_server_verify_key_v2_indirect(
|
||||
server_name, key_ids, perspective_name, perspective_keys
|
||||
server_name_and_key_ids, perspective_name, perspective_keys
|
||||
)
|
||||
defer.returnValue(result)
|
||||
except Exception as e:
|
||||
logging.info(
|
||||
"Unable to getting key %r for %r from %r: %s %s",
|
||||
key_ids, server_name, perspective_name,
|
||||
logger.exception(
|
||||
"Unable to get key from %r: %s %s",
|
||||
perspective_name,
|
||||
type(e).__name__, str(e.message),
|
||||
)
|
||||
defer.returnValue({})
|
||||
|
||||
perspective_results = yield defer.gatherResults([
|
||||
get_key(p_name, p_keys)
|
||||
for p_name, p_keys in self.perspective_servers.items()
|
||||
])
|
||||
results = yield defer.gatherResults(
|
||||
[
|
||||
get_key(p_name, p_keys)
|
||||
for p_name, p_keys in self.perspective_servers.items()
|
||||
],
|
||||
consumeErrors=True,
|
||||
).addErrback(unwrapFirstError)
|
||||
|
||||
for results in perspective_results:
|
||||
if results is not None:
|
||||
keys = results
|
||||
union_of_keys = {}
|
||||
for result in results:
|
||||
for server_name, keys in result.items():
|
||||
union_of_keys.setdefault(server_name, {}).update(keys)
|
||||
|
||||
limiter = yield get_retry_limiter(
|
||||
server_name,
|
||||
self.clock,
|
||||
self.store,
|
||||
)
|
||||
defer.returnValue(union_of_keys)
|
||||
|
||||
with limiter:
|
||||
if not keys:
|
||||
@defer.inlineCallbacks
|
||||
def get_keys_from_server(self, server_name_and_key_ids):
|
||||
@defer.inlineCallbacks
|
||||
def get_key(server_name, key_ids):
|
||||
limiter = yield get_retry_limiter(
|
||||
server_name,
|
||||
self.clock,
|
||||
self.store,
|
||||
)
|
||||
with limiter:
|
||||
keys = None
|
||||
try:
|
||||
keys = yield self.get_server_verify_key_v2_direct(
|
||||
server_name, key_ids
|
||||
)
|
||||
except Exception as e:
|
||||
logging.info(
|
||||
logger.info(
|
||||
"Unable to getting key %r for %r directly: %s %s",
|
||||
key_ids, server_name,
|
||||
type(e).__name__, str(e.message),
|
||||
)
|
||||
|
||||
if not keys:
|
||||
keys = yield self.get_server_verify_key_v1_direct(
|
||||
server_name, key_ids
|
||||
)
|
||||
if not keys:
|
||||
keys = yield self.get_server_verify_key_v1_direct(
|
||||
server_name, key_ids
|
||||
)
|
||||
|
||||
for key_id in key_ids:
|
||||
if key_id in keys:
|
||||
defer.returnValue(keys[key_id])
|
||||
return
|
||||
raise ValueError("No verification key found for given key ids")
|
||||
keys = {server_name: keys}
|
||||
|
||||
defer.returnValue(keys)
|
||||
|
||||
results = yield defer.gatherResults(
|
||||
[
|
||||
get_key(server_name, key_ids)
|
||||
for server_name, key_ids in server_name_and_key_ids
|
||||
],
|
||||
consumeErrors=True,
|
||||
).addErrback(unwrapFirstError)
|
||||
|
||||
merged = {}
|
||||
for result in results:
|
||||
merged.update(result)
|
||||
|
||||
defer.returnValue({
|
||||
server_name: keys
|
||||
for server_name, keys in merged.items()
|
||||
if keys
|
||||
})
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def get_server_verify_key_v2_indirect(self, server_name, key_ids,
|
||||
def get_server_verify_key_v2_indirect(self, server_names_and_key_ids,
|
||||
perspective_name,
|
||||
perspective_keys):
|
||||
limiter = yield get_retry_limiter(
|
||||
@ -204,6 +393,7 @@ class Keyring(object):
|
||||
u"minimum_valid_until_ts": 0
|
||||
} for key_id in key_ids
|
||||
}
|
||||
for server_name, key_ids in server_names_and_key_ids
|
||||
}
|
||||
},
|
||||
)
|
||||
@ -243,23 +433,29 @@ class Keyring(object):
|
||||
" server %r" % (perspective_name,)
|
||||
)
|
||||
|
||||
response_keys = yield self.process_v2_response(
|
||||
server_name, perspective_name, response
|
||||
processed_response = yield self.process_v2_response(
|
||||
perspective_name, response
|
||||
)
|
||||
|
||||
keys.update(response_keys)
|
||||
for server_name, response_keys in processed_response.items():
|
||||
keys.setdefault(server_name, {}).update(response_keys)
|
||||
|
||||
yield self.store_keys(
|
||||
server_name=server_name,
|
||||
from_server=perspective_name,
|
||||
verify_keys=keys,
|
||||
)
|
||||
yield defer.gatherResults(
|
||||
[
|
||||
self.store_keys(
|
||||
server_name=server_name,
|
||||
from_server=perspective_name,
|
||||
verify_keys=response_keys,
|
||||
)
|
||||
for server_name, response_keys in keys.items()
|
||||
],
|
||||
consumeErrors=True
|
||||
).addErrback(unwrapFirstError)
|
||||
|
||||
defer.returnValue(keys)
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def get_server_verify_key_v2_direct(self, server_name, key_ids):
|
||||
|
||||
keys = {}
|
||||
|
||||
for requested_key_id in key_ids:
|
||||
@ -295,25 +491,30 @@ class Keyring(object):
|
||||
raise ValueError("TLS certificate not allowed by fingerprints")
|
||||
|
||||
response_keys = yield self.process_v2_response(
|
||||
server_name=server_name,
|
||||
from_server=server_name,
|
||||
requested_id=requested_key_id,
|
||||
requested_ids=[requested_key_id],
|
||||
response_json=response,
|
||||
)
|
||||
|
||||
keys.update(response_keys)
|
||||
|
||||
yield self.store_keys(
|
||||
server_name=server_name,
|
||||
from_server=server_name,
|
||||
verify_keys=keys,
|
||||
)
|
||||
yield defer.gatherResults(
|
||||
[
|
||||
self.store_keys(
|
||||
server_name=key_server_name,
|
||||
from_server=server_name,
|
||||
verify_keys=verify_keys,
|
||||
)
|
||||
for key_server_name, verify_keys in keys.items()
|
||||
],
|
||||
consumeErrors=True
|
||||
).addErrback(unwrapFirstError)
|
||||
|
||||
defer.returnValue(keys)
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def process_v2_response(self, server_name, from_server, response_json,
|
||||
requested_id=None):
|
||||
def process_v2_response(self, from_server, response_json,
|
||||
requested_ids=[]):
|
||||
time_now_ms = self.clock.time_msec()
|
||||
response_keys = {}
|
||||
verify_keys = {}
|
||||
@ -335,6 +536,8 @@ class Keyring(object):
|
||||
verify_key.time_added = time_now_ms
|
||||
old_verify_keys[key_id] = verify_key
|
||||
|
||||
results = {}
|
||||
server_name = response_json["server_name"]
|
||||
for key_id in response_json["signatures"].get(server_name, {}):
|
||||
if key_id not in response_json["verify_keys"]:
|
||||
raise ValueError(
|
||||
@ -357,28 +560,31 @@ class Keyring(object):
|
||||
signed_key_json_bytes = encode_canonical_json(signed_key_json)
|
||||
ts_valid_until_ms = signed_key_json[u"valid_until_ts"]
|
||||
|
||||
updated_key_ids = set()
|
||||
if requested_id is not None:
|
||||
updated_key_ids.add(requested_id)
|
||||
updated_key_ids = set(requested_ids)
|
||||
updated_key_ids.update(verify_keys)
|
||||
updated_key_ids.update(old_verify_keys)
|
||||
|
||||
response_keys.update(verify_keys)
|
||||
response_keys.update(old_verify_keys)
|
||||
|
||||
for key_id in updated_key_ids:
|
||||
yield self.store.store_server_keys_json(
|
||||
server_name=server_name,
|
||||
key_id=key_id,
|
||||
from_server=server_name,
|
||||
ts_now_ms=time_now_ms,
|
||||
ts_expires_ms=ts_valid_until_ms,
|
||||
key_json_bytes=signed_key_json_bytes,
|
||||
)
|
||||
yield defer.gatherResults(
|
||||
[
|
||||
self.store.store_server_keys_json(
|
||||
server_name=server_name,
|
||||
key_id=key_id,
|
||||
from_server=server_name,
|
||||
ts_now_ms=time_now_ms,
|
||||
ts_expires_ms=ts_valid_until_ms,
|
||||
key_json_bytes=signed_key_json_bytes,
|
||||
)
|
||||
for key_id in updated_key_ids
|
||||
],
|
||||
consumeErrors=True,
|
||||
).addErrback(unwrapFirstError)
|
||||
|
||||
defer.returnValue(response_keys)
|
||||
results[server_name] = response_keys
|
||||
|
||||
raise ValueError("No verification key found for given key ids")
|
||||
defer.returnValue(results)
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def get_server_verify_key_v1_direct(self, server_name, key_ids):
|
||||
@ -462,8 +668,13 @@ class Keyring(object):
|
||||
Returns:
|
||||
A deferred that completes when the keys are stored.
|
||||
"""
|
||||
for key_id, key in verify_keys.items():
|
||||
# TODO(markjh): Store whether the keys have expired.
|
||||
yield self.store.store_server_verify_key(
|
||||
server_name, server_name, key.time_added, key
|
||||
)
|
||||
# TODO(markjh): Store whether the keys have expired.
|
||||
yield defer.gatherResults(
|
||||
[
|
||||
self.store.store_server_verify_key(
|
||||
server_name, server_name, key.time_added, key
|
||||
)
|
||||
for key_id, key in verify_keys.items()
|
||||
],
|
||||
consumeErrors=True,
|
||||
).addErrback(unwrapFirstError)
|
||||
|
||||
@ -74,6 +74,8 @@ def prune_event(event):
|
||||
)
|
||||
elif event_type == EventTypes.Aliases:
|
||||
add_fields("aliases")
|
||||
elif event_type == EventTypes.RoomHistoryVisibility:
|
||||
add_fields("history_visibility")
|
||||
|
||||
allowed_fields = {
|
||||
k: v
|
||||
|
||||
@ -32,7 +32,8 @@ logger = logging.getLogger(__name__)
|
||||
|
||||
class FederationBase(object):
|
||||
@defer.inlineCallbacks
|
||||
def _check_sigs_and_hash_and_fetch(self, origin, pdus, outlier=False):
|
||||
def _check_sigs_and_hash_and_fetch(self, origin, pdus, outlier=False,
|
||||
include_none=False):
|
||||
"""Takes a list of PDUs and checks the signatures and hashs of each
|
||||
one. If a PDU fails its signature check then we check if we have it in
|
||||
the database and if not then request if from the originating server of
|
||||
@ -50,84 +51,108 @@ class FederationBase(object):
|
||||
Returns:
|
||||
Deferred : A list of PDUs that have valid signatures and hashes.
|
||||
"""
|
||||
deferreds = self._check_sigs_and_hashes(pdus)
|
||||
|
||||
signed_pdus = []
|
||||
def callback(pdu):
|
||||
return pdu
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def do(pdu):
|
||||
try:
|
||||
new_pdu = yield self._check_sigs_and_hash(pdu)
|
||||
signed_pdus.append(new_pdu)
|
||||
except SynapseError:
|
||||
# FIXME: We should handle signature failures more gracefully.
|
||||
def errback(failure, pdu):
|
||||
failure.trap(SynapseError)
|
||||
return None
|
||||
|
||||
def try_local_db(res, pdu):
|
||||
if not res:
|
||||
# Check local db.
|
||||
new_pdu = yield self.store.get_event(
|
||||
return self.store.get_event(
|
||||
pdu.event_id,
|
||||
allow_rejected=True,
|
||||
allow_none=True,
|
||||
)
|
||||
if new_pdu:
|
||||
signed_pdus.append(new_pdu)
|
||||
return
|
||||
return res
|
||||
|
||||
# Check pdu.origin
|
||||
if pdu.origin != origin:
|
||||
try:
|
||||
new_pdu = yield self.get_pdu(
|
||||
destinations=[pdu.origin],
|
||||
event_id=pdu.event_id,
|
||||
outlier=outlier,
|
||||
timeout=10000,
|
||||
)
|
||||
|
||||
if new_pdu:
|
||||
signed_pdus.append(new_pdu)
|
||||
return
|
||||
except:
|
||||
pass
|
||||
def try_remote(res, pdu):
|
||||
if not res and pdu.origin != origin:
|
||||
return self.get_pdu(
|
||||
destinations=[pdu.origin],
|
||||
event_id=pdu.event_id,
|
||||
outlier=outlier,
|
||||
timeout=10000,
|
||||
).addErrback(lambda e: None)
|
||||
return res
|
||||
|
||||
def warn(res, pdu):
|
||||
if not res:
|
||||
logger.warn(
|
||||
"Failed to find copy of %s with valid signature",
|
||||
pdu.event_id,
|
||||
)
|
||||
return res
|
||||
|
||||
yield defer.gatherResults(
|
||||
[do(pdu) for pdu in pdus],
|
||||
for pdu, deferred in zip(pdus, deferreds):
|
||||
deferred.addCallbacks(
|
||||
callback, errback, errbackArgs=[pdu]
|
||||
).addCallback(
|
||||
try_local_db, pdu
|
||||
).addCallback(
|
||||
try_remote, pdu
|
||||
).addCallback(
|
||||
warn, pdu
|
||||
)
|
||||
|
||||
valid_pdus = yield defer.gatherResults(
|
||||
deferreds,
|
||||
consumeErrors=True
|
||||
).addErrback(unwrapFirstError)
|
||||
|
||||
defer.returnValue(signed_pdus)
|
||||
if include_none:
|
||||
defer.returnValue(valid_pdus)
|
||||
else:
|
||||
defer.returnValue([p for p in valid_pdus if p])
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def _check_sigs_and_hash(self, pdu):
|
||||
"""Throws a SynapseError if the PDU does not have the correct
|
||||
return self._check_sigs_and_hashes([pdu])[0]
|
||||
|
||||
def _check_sigs_and_hashes(self, pdus):
|
||||
"""Throws a SynapseError if a PDU does not have the correct
|
||||
signatures.
|
||||
|
||||
Returns:
|
||||
FrozenEvent: Either the given event or it redacted if it failed the
|
||||
content hash check.
|
||||
"""
|
||||
# Check signatures are correct.
|
||||
redacted_event = prune_event(pdu)
|
||||
redacted_pdu_json = redacted_event.get_pdu_json()
|
||||
|
||||
try:
|
||||
yield self.keyring.verify_json_for_server(
|
||||
pdu.origin, redacted_pdu_json
|
||||
)
|
||||
except SynapseError:
|
||||
redacted_pdus = [
|
||||
prune_event(pdu)
|
||||
for pdu in pdus
|
||||
]
|
||||
|
||||
deferreds = self.keyring.verify_json_objects_for_server([
|
||||
(p.origin, p.get_pdu_json())
|
||||
for p in redacted_pdus
|
||||
])
|
||||
|
||||
def callback(_, pdu, redacted):
|
||||
if not check_event_content_hash(pdu):
|
||||
logger.warn(
|
||||
"Event content has been tampered, redacting %s: %s",
|
||||
pdu.event_id, pdu.get_pdu_json()
|
||||
)
|
||||
return redacted
|
||||
return pdu
|
||||
|
||||
def errback(failure, pdu):
|
||||
failure.trap(SynapseError)
|
||||
logger.warn(
|
||||
"Signature check failed for %s",
|
||||
pdu.event_id,
|
||||
)
|
||||
raise
|
||||
return failure
|
||||
|
||||
if not check_event_content_hash(pdu):
|
||||
logger.warn(
|
||||
"Event content has been tampered, redacting.",
|
||||
pdu.event_id,
|
||||
for deferred, pdu, redacted in zip(deferreds, pdus, redacted_pdus):
|
||||
deferred.addCallbacks(
|
||||
callback, errback,
|
||||
callbackArgs=[pdu, redacted],
|
||||
errbackArgs=[pdu],
|
||||
)
|
||||
defer.returnValue(redacted_event)
|
||||
|
||||
defer.returnValue(pdu)
|
||||
return deferreds
|
||||
|
||||
@ -30,6 +30,7 @@ import synapse.metrics
|
||||
|
||||
from synapse.util.retryutils import get_retry_limiter, NotRetryingDestination
|
||||
|
||||
import copy
|
||||
import itertools
|
||||
import logging
|
||||
import random
|
||||
@ -167,7 +168,7 @@ class FederationClient(FederationBase):
|
||||
|
||||
# FIXME: We should handle signature failures more gracefully.
|
||||
pdus[:] = yield defer.gatherResults(
|
||||
[self._check_sigs_and_hash(pdu) for pdu in pdus],
|
||||
self._check_sigs_and_hashes(pdus),
|
||||
consumeErrors=True,
|
||||
).addErrback(unwrapFirstError)
|
||||
|
||||
@ -230,7 +231,7 @@ class FederationClient(FederationBase):
|
||||
pdu = pdu_list[0]
|
||||
|
||||
# Check signatures are correct.
|
||||
pdu = yield self._check_sigs_and_hash(pdu)
|
||||
pdu = yield self._check_sigs_and_hashes([pdu])[0]
|
||||
|
||||
break
|
||||
|
||||
@ -327,6 +328,9 @@ class FederationClient(FederationBase):
|
||||
@defer.inlineCallbacks
|
||||
def make_join(self, destinations, room_id, user_id):
|
||||
for destination in destinations:
|
||||
if destination == self.server_name:
|
||||
continue
|
||||
|
||||
try:
|
||||
ret = yield self.transport_layer.make_join(
|
||||
destination, room_id, user_id
|
||||
@ -353,6 +357,9 @@ class FederationClient(FederationBase):
|
||||
@defer.inlineCallbacks
|
||||
def send_join(self, destinations, pdu):
|
||||
for destination in destinations:
|
||||
if destination == self.server_name:
|
||||
continue
|
||||
|
||||
try:
|
||||
time_now = self._clock.time_msec()
|
||||
_, content = yield self.transport_layer.send_join(
|
||||
@ -374,17 +381,39 @@ class FederationClient(FederationBase):
|
||||
for p in content.get("auth_chain", [])
|
||||
]
|
||||
|
||||
signed_state, signed_auth = yield defer.gatherResults(
|
||||
[
|
||||
self._check_sigs_and_hash_and_fetch(
|
||||
destination, state, outlier=True
|
||||
),
|
||||
self._check_sigs_and_hash_and_fetch(
|
||||
destination, auth_chain, outlier=True
|
||||
)
|
||||
],
|
||||
consumeErrors=True
|
||||
).addErrback(unwrapFirstError)
|
||||
pdus = {
|
||||
p.event_id: p
|
||||
for p in itertools.chain(state, auth_chain)
|
||||
}
|
||||
|
||||
valid_pdus = yield self._check_sigs_and_hash_and_fetch(
|
||||
destination, pdus.values(),
|
||||
outlier=True,
|
||||
)
|
||||
|
||||
valid_pdus_map = {
|
||||
p.event_id: p
|
||||
for p in valid_pdus
|
||||
}
|
||||
|
||||
# NB: We *need* to copy to ensure that we don't have multiple
|
||||
# references being passed on, as that causes... issues.
|
||||
signed_state = [
|
||||
copy.copy(valid_pdus_map[p.event_id])
|
||||
for p in state
|
||||
if p.event_id in valid_pdus_map
|
||||
]
|
||||
|
||||
signed_auth = [
|
||||
valid_pdus_map[p.event_id]
|
||||
for p in auth_chain
|
||||
if p.event_id in valid_pdus_map
|
||||
]
|
||||
|
||||
# NB: We *need* to copy to ensure that we don't have multiple
|
||||
# references being passed on, as that causes... issues.
|
||||
for s in signed_state:
|
||||
s.internal_metadata = copy.deepcopy(s.internal_metadata)
|
||||
|
||||
auth_chain.sort(key=lambda e: e.depth)
|
||||
|
||||
@ -396,7 +425,7 @@ class FederationClient(FederationBase):
|
||||
except CodeMessageException:
|
||||
raise
|
||||
except Exception as e:
|
||||
logger.warn(
|
||||
logger.exception(
|
||||
"Failed to send_join via %s: %s",
|
||||
destination, e.message
|
||||
)
|
||||
|
||||
@ -31,6 +31,8 @@ from synapse.crypto.event_signing import (
|
||||
)
|
||||
from synapse.types import UserID
|
||||
|
||||
from synapse.events.utils import prune_event
|
||||
|
||||
from synapse.util.retryutils import NotRetryingDestination
|
||||
|
||||
from twisted.internet import defer
|
||||
@ -222,6 +224,56 @@ class FederationHandler(BaseHandler):
|
||||
"user_joined_room", user=user, room_id=event.room_id
|
||||
)
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def _filter_events_for_server(self, server_name, room_id, events):
|
||||
states = yield self.store.get_state_for_events(
|
||||
room_id, [e.event_id for e in events],
|
||||
)
|
||||
|
||||
events_and_states = zip(events, states)
|
||||
|
||||
def redact_disallowed(event_and_state):
|
||||
event, state = event_and_state
|
||||
|
||||
if not state:
|
||||
return event
|
||||
|
||||
history = state.get((EventTypes.RoomHistoryVisibility, ''), None)
|
||||
if history:
|
||||
visibility = history.content.get("history_visibility", "shared")
|
||||
if visibility in ["invited", "joined"]:
|
||||
# We now loop through all state events looking for
|
||||
# membership states for the requesting server to determine
|
||||
# if the server is either in the room or has been invited
|
||||
# into the room.
|
||||
for ev in state.values():
|
||||
if ev.type != EventTypes.Member:
|
||||
continue
|
||||
try:
|
||||
domain = UserID.from_string(ev.state_key).domain
|
||||
except:
|
||||
continue
|
||||
|
||||
if domain != server_name:
|
||||
continue
|
||||
|
||||
memtype = ev.membership
|
||||
if memtype == Membership.JOIN:
|
||||
return event
|
||||
elif memtype == Membership.INVITE:
|
||||
if visibility == "invited":
|
||||
return event
|
||||
else:
|
||||
return prune_event(event)
|
||||
|
||||
return event
|
||||
|
||||
res = map(redact_disallowed, events_and_states)
|
||||
|
||||
logger.info("_filter_events_for_server %r", res)
|
||||
|
||||
defer.returnValue(res)
|
||||
|
||||
@log_function
|
||||
@defer.inlineCallbacks
|
||||
def backfill(self, dest, room_id, limit, extremities=[]):
|
||||
@ -882,6 +934,8 @@ class FederationHandler(BaseHandler):
|
||||
limit
|
||||
)
|
||||
|
||||
events = yield self._filter_events_for_server(origin, room_id, events)
|
||||
|
||||
defer.returnValue(events)
|
||||
|
||||
@defer.inlineCallbacks
|
||||
|
||||
@ -113,11 +113,21 @@ class MessageHandler(BaseHandler):
|
||||
"room_key", next_key
|
||||
)
|
||||
|
||||
if not events:
|
||||
defer.returnValue({
|
||||
"chunk": [],
|
||||
"start": pagin_config.from_token.to_string(),
|
||||
"end": next_token.to_string(),
|
||||
})
|
||||
|
||||
events = yield self._filter_events_for_client(user_id, room_id, events)
|
||||
|
||||
time_now = self.clock.time_msec()
|
||||
|
||||
chunk = {
|
||||
"chunk": [
|
||||
serialize_event(e, time_now, as_client_event) for e in events
|
||||
serialize_event(e, time_now, as_client_event)
|
||||
for e in events
|
||||
],
|
||||
"start": pagin_config.from_token.to_string(),
|
||||
"end": next_token.to_string(),
|
||||
@ -125,6 +135,52 @@ class MessageHandler(BaseHandler):
|
||||
|
||||
defer.returnValue(chunk)
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def _filter_events_for_client(self, user_id, room_id, events):
|
||||
states = yield self.store.get_state_for_events(
|
||||
room_id, [e.event_id for e in events],
|
||||
)
|
||||
|
||||
events_and_states = zip(events, states)
|
||||
|
||||
def allowed(event_and_state):
|
||||
event, state = event_and_state
|
||||
|
||||
if event.type == EventTypes.RoomHistoryVisibility:
|
||||
return True
|
||||
|
||||
membership_ev = state.get((EventTypes.Member, user_id), None)
|
||||
if membership_ev:
|
||||
membership = membership_ev.membership
|
||||
else:
|
||||
membership = Membership.LEAVE
|
||||
|
||||
if membership == Membership.JOIN:
|
||||
return True
|
||||
|
||||
history = state.get((EventTypes.RoomHistoryVisibility, ''), None)
|
||||
if history:
|
||||
visibility = history.content.get("history_visibility", "shared")
|
||||
else:
|
||||
visibility = "shared"
|
||||
|
||||
if visibility == "public":
|
||||
return True
|
||||
elif visibility == "shared":
|
||||
return True
|
||||
elif visibility == "joined":
|
||||
return membership == Membership.JOIN
|
||||
elif visibility == "invited":
|
||||
return membership == Membership.INVITE
|
||||
|
||||
return True
|
||||
|
||||
events_and_states = filter(allowed, events_and_states)
|
||||
defer.returnValue([
|
||||
ev
|
||||
for ev, _ in events_and_states
|
||||
])
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def create_and_send_event(self, event_dict, ratelimit=True,
|
||||
client=None, txn_id=None):
|
||||
@ -316,6 +372,10 @@ class MessageHandler(BaseHandler):
|
||||
]
|
||||
).addErrback(unwrapFirstError)
|
||||
|
||||
messages = yield self._filter_events_for_client(
|
||||
user_id, event.room_id, messages
|
||||
)
|
||||
|
||||
start_token = now_token.copy_and_replace("room_key", token[0])
|
||||
end_token = now_token.copy_and_replace("room_key", token[1])
|
||||
time_now = self.clock.time_msec()
|
||||
@ -417,6 +477,10 @@ class MessageHandler(BaseHandler):
|
||||
consumeErrors=True,
|
||||
).addErrback(unwrapFirstError)
|
||||
|
||||
messages = yield self._filter_events_for_client(
|
||||
user_id, room_id, messages
|
||||
)
|
||||
|
||||
start_token = now_token.copy_and_replace("room_key", token[0])
|
||||
end_token = now_token.copy_and_replace("room_key", token[1])
|
||||
|
||||
|
||||
@ -213,6 +213,7 @@ class RoomCreationHandler(BaseHandler):
|
||||
"events": {
|
||||
EventTypes.Name: 100,
|
||||
EventTypes.PowerLevels: 100,
|
||||
EventTypes.RoomHistoryVisibility: 100,
|
||||
},
|
||||
"events_default": 0,
|
||||
"state_default": 50,
|
||||
|
||||
@ -292,6 +292,51 @@ class SyncHandler(BaseHandler):
|
||||
next_batch=now_token,
|
||||
))
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def _filter_events_for_client(self, user_id, room_id, events):
|
||||
states = yield self.store.get_state_for_events(
|
||||
room_id, [e.event_id for e in events],
|
||||
)
|
||||
|
||||
events_and_states = zip(events, states)
|
||||
|
||||
def allowed(event_and_state):
|
||||
event, state = event_and_state
|
||||
|
||||
if event.type == EventTypes.RoomHistoryVisibility:
|
||||
return True
|
||||
|
||||
membership_ev = state.get((EventTypes.Member, user_id), None)
|
||||
if membership_ev:
|
||||
membership = membership_ev.membership
|
||||
else:
|
||||
membership = Membership.LEAVE
|
||||
|
||||
if membership == Membership.JOIN:
|
||||
return True
|
||||
|
||||
history = state.get((EventTypes.RoomHistoryVisibility, ''), None)
|
||||
if history:
|
||||
visibility = history.content.get("history_visibility", "shared")
|
||||
else:
|
||||
visibility = "shared"
|
||||
|
||||
if visibility == "public":
|
||||
return True
|
||||
elif visibility == "shared":
|
||||
return True
|
||||
elif visibility == "joined":
|
||||
return membership == Membership.JOIN
|
||||
elif visibility == "invited":
|
||||
return membership == Membership.INVITE
|
||||
|
||||
return True
|
||||
events_and_states = filter(allowed, events_and_states)
|
||||
defer.returnValue([
|
||||
ev
|
||||
for ev, _ in events_and_states
|
||||
])
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def load_filtered_recents(self, room_id, sync_config, now_token,
|
||||
since_token=None):
|
||||
@ -313,6 +358,9 @@ class SyncHandler(BaseHandler):
|
||||
(room_key, _) = keys
|
||||
end_key = "s" + room_key.split('-')[-1]
|
||||
loaded_recents = sync_config.filter.filter_room_events(events)
|
||||
loaded_recents = yield self._filter_events_for_client(
|
||||
sync_config.user.to_string(), room_id, loaded_recents,
|
||||
)
|
||||
loaded_recents.extend(recents)
|
||||
recents = loaded_recents
|
||||
if len(events) <= load_limit:
|
||||
|
||||
@ -13,7 +13,7 @@
|
||||
# See the License for the specific language governing permissions and
|
||||
# limitations under the License.
|
||||
|
||||
from _base import SQLBaseStore
|
||||
from _base import SQLBaseStore, cached
|
||||
|
||||
from twisted.internet import defer
|
||||
|
||||
@ -71,6 +71,25 @@ class KeyStore(SQLBaseStore):
|
||||
desc="store_server_certificate",
|
||||
)
|
||||
|
||||
@cached()
|
||||
@defer.inlineCallbacks
|
||||
def get_all_server_verify_keys(self, server_name):
|
||||
rows = yield self._simple_select_list(
|
||||
table="server_signature_keys",
|
||||
keyvalues={
|
||||
"server_name": server_name,
|
||||
},
|
||||
retcols=["key_id", "verify_key"],
|
||||
desc="get_all_server_verify_keys",
|
||||
)
|
||||
|
||||
defer.returnValue({
|
||||
row["key_id"]: decode_verify_key_bytes(
|
||||
row["key_id"], str(row["verify_key"])
|
||||
)
|
||||
for row in rows
|
||||
})
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def get_server_verify_keys(self, server_name, key_ids):
|
||||
"""Retrieve the NACL verification key for a given server for the given
|
||||
@ -81,24 +100,14 @@ class KeyStore(SQLBaseStore):
|
||||
Returns:
|
||||
(list of VerifyKey): The verification keys.
|
||||
"""
|
||||
sql = (
|
||||
"SELECT key_id, verify_key FROM server_signature_keys"
|
||||
" WHERE server_name = ?"
|
||||
" AND key_id in (" + ",".join("?" for key_id in key_ids) + ")"
|
||||
)
|
||||
|
||||
rows = yield self._execute_and_decode(
|
||||
"get_server_verify_keys", sql, server_name, *key_ids
|
||||
)
|
||||
|
||||
keys = []
|
||||
for row in rows:
|
||||
key_id = row["key_id"]
|
||||
key_bytes = row["verify_key"]
|
||||
key = decode_verify_key_bytes(key_id, str(key_bytes))
|
||||
keys.append(key)
|
||||
defer.returnValue(keys)
|
||||
keys = yield self.get_all_server_verify_keys(server_name)
|
||||
defer.returnValue({
|
||||
k: keys[k]
|
||||
for k in key_ids
|
||||
if k in keys and keys[k]
|
||||
})
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def store_server_verify_key(self, server_name, from_server, time_now_ms,
|
||||
verify_key):
|
||||
"""Stores a NACL verification key for the given server.
|
||||
@ -109,7 +118,7 @@ class KeyStore(SQLBaseStore):
|
||||
ts_now_ms (int): The time now in milliseconds
|
||||
verification_key (VerifyKey): The NACL verify key.
|
||||
"""
|
||||
return self._simple_upsert(
|
||||
yield self._simple_upsert(
|
||||
table="server_signature_keys",
|
||||
keyvalues={
|
||||
"server_name": server_name,
|
||||
@ -123,6 +132,8 @@ class KeyStore(SQLBaseStore):
|
||||
desc="store_server_verify_key",
|
||||
)
|
||||
|
||||
self.get_all_server_verify_keys.invalidate(server_name)
|
||||
|
||||
def store_server_keys_json(self, server_name, key_id, from_server,
|
||||
ts_now_ms, ts_expires_ms, key_json_bytes):
|
||||
"""Stores the JSON bytes for a set of keys from a server
|
||||
@ -152,6 +163,7 @@ class KeyStore(SQLBaseStore):
|
||||
"ts_valid_until_ms": ts_expires_ms,
|
||||
"key_json": buffer(key_json_bytes),
|
||||
},
|
||||
desc="store_server_keys_json",
|
||||
)
|
||||
|
||||
def get_server_keys_json(self, server_keys):
|
||||
|
||||
@ -92,11 +92,11 @@ class StateStore(SQLBaseStore):
|
||||
defer.returnValue(dict(state_list))
|
||||
|
||||
@cached(num_args=1)
|
||||
def _fetch_events_for_group(self, state_group, events):
|
||||
def _fetch_events_for_group(self, key, events):
|
||||
return self._get_events(
|
||||
events, get_prev_content=False
|
||||
).addCallback(
|
||||
lambda evs: (state_group, evs)
|
||||
lambda evs: (key, evs)
|
||||
)
|
||||
|
||||
def _store_state_groups_txn(self, txn, event, context):
|
||||
@ -194,6 +194,65 @@ class StateStore(SQLBaseStore):
|
||||
events = yield self._get_events(event_ids, get_prev_content=False)
|
||||
defer.returnValue(events)
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def get_state_for_events(self, room_id, event_ids):
|
||||
def f(txn):
|
||||
groups = set()
|
||||
event_to_group = {}
|
||||
for event_id in event_ids:
|
||||
# TODO: Remove this loop.
|
||||
group = self._simple_select_one_onecol_txn(
|
||||
txn,
|
||||
table="event_to_state_groups",
|
||||
keyvalues={"event_id": event_id},
|
||||
retcol="state_group",
|
||||
allow_none=True,
|
||||
)
|
||||
if group:
|
||||
event_to_group[event_id] = group
|
||||
groups.add(group)
|
||||
|
||||
group_to_state_ids = {}
|
||||
for group in groups:
|
||||
state_ids = self._simple_select_onecol_txn(
|
||||
txn,
|
||||
table="state_groups_state",
|
||||
keyvalues={"state_group": group},
|
||||
retcol="event_id",
|
||||
)
|
||||
|
||||
group_to_state_ids[group] = state_ids
|
||||
|
||||
return event_to_group, group_to_state_ids
|
||||
|
||||
res = yield self.runInteraction(
|
||||
"annotate_events_with_state_groups",
|
||||
f,
|
||||
)
|
||||
|
||||
event_to_group, group_to_state_ids = res
|
||||
|
||||
state_list = yield defer.gatherResults(
|
||||
[
|
||||
self._fetch_events_for_group(group, vals)
|
||||
for group, vals in group_to_state_ids.items()
|
||||
],
|
||||
consumeErrors=True,
|
||||
)
|
||||
|
||||
state_dict = {
|
||||
group: {
|
||||
(ev.type, ev.state_key): ev
|
||||
for ev in state
|
||||
}
|
||||
for group, state in state_list
|
||||
}
|
||||
|
||||
defer.returnValue([
|
||||
state_dict.get(event_to_group.get(event, None), None)
|
||||
for event in event_ids
|
||||
])
|
||||
|
||||
|
||||
def _make_group_id(clock):
|
||||
return str(int(clock.time_msec())) + random_string(5)
|
||||
|
||||
Loading…
Reference in New Issue
Block a user