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Merge pull request #2492 from matrix-org/dbkr/spam_check_invites
Allow spam checker to reject invites too
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commit
5f20a91fa1
@ -45,3 +45,19 @@ class SpamChecker(object):
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return False
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return self.spam_checker.check_event_for_spam(event)
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def user_may_invite(self, userid, room_id):
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"""Checks if a given user may send an invite
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If this method returns false, the invite will be rejected.
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Args:
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userid (string): The sender's user ID
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Returns:
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bool: True if the user may send an invite, otherwise False
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"""
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if self.spam_checker is None:
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return True
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return self.spam_checker.user_may_invite(userid, room_id)
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@ -77,6 +77,7 @@ class FederationHandler(BaseHandler):
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self.action_generator = hs.get_action_generator()
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self.is_mine_id = hs.is_mine_id
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self.pusher_pool = hs.get_pusherpool()
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self.spam_checker = hs.get_spam_checker()
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self.replication_layer.set_handler(self)
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@ -1077,6 +1078,11 @@ class FederationHandler(BaseHandler):
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if self.hs.config.block_non_admin_invites:
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raise SynapseError(403, "This server does not accept room invites")
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if not self.spam_checker.user_may_invite(event.sender, event.room_id):
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raise SynapseError(
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403, "This user is not permitted to send invites to this server"
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)
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membership = event.content.get("membership")
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if event.type != EventTypes.Member or membership != Membership.INVITE:
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raise SynapseError(400, "The event was not an m.room.member invite event")
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@ -48,6 +48,7 @@ class RoomMemberHandler(BaseHandler):
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self.member_linearizer = Linearizer(name="member")
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self.clock = hs.get_clock()
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self.spam_checker = hs.get_spam_checker()
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self.distributor = hs.get_distributor()
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self.distributor.declare("user_joined_room")
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@ -210,12 +211,26 @@ class RoomMemberHandler(BaseHandler):
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if is_blocked:
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raise SynapseError(403, "This room has been blocked on this server")
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if (effective_membership_state == "invite" and
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self.hs.config.block_non_admin_invites):
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if effective_membership_state == "invite":
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block_invite = False
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is_requester_admin = yield self.auth.is_server_admin(
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requester.user,
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)
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if not is_requester_admin:
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if self.hs.config.block_non_admin_invites:
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logger.info(
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"Blocking invite: user is not admin and non-admin "
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"invites disabled"
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)
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block_invite = True
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if not self.spam_checker.user_may_invite(
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requester.user.to_string(), room_id,
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):
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logger.info("Blocking invite due to spam checker")
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block_invite = True
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if block_invite:
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raise SynapseError(
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403, "Invites have been disabled on this server",
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)
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