mirror of
https://github.com/matrix-construct/construct
synced 2024-08-25 19:12:08 +02:00
259 lines
5.8 KiB
C++
259 lines
5.8 KiB
C++
// Matrix Construct
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//
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// Copyright (C) Matrix Construct Developers, Authors & Contributors
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// Copyright (C) 2016-2019 Jason Volk <jason@zemos.net>
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//
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// Permission to use, copy, modify, and/or distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice is present in all copies. The
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// full license for this software is available in the LICENSE file.
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using namespace ircd;
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static void
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process(client &,
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const resource::request &,
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const m::event &);
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static resource::response
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put__invite(client &client,
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const resource::request &request);
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mapi::header
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IRCD_MODULE
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{
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"Federation 12 :Inviting to a room (v2)"
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};
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resource
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invite_resource
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{
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"/_matrix/federation/v2/invite/",
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{
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"Inviting to a room",
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resource::DIRECTORY
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}
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};
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resource::method
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method_put
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{
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invite_resource, "PUT", put__invite,
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{
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method_put.VERIFY_ORIGIN
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}
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};
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mods::import<conf::item<milliseconds>>
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stream_cross_sleeptime
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{
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"federation_invite", "stream_cross_sleeptime"
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};
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resource::response
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put__invite(client &client,
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const resource::request &request)
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{
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if(request.parv.size() < 1)
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throw m::NEED_MORE_PARAMS
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{
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"room_id path parameter required"
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};
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m::room::id::buf room_id
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{
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url::decode(room_id, request.parv[0])
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};
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if(request.parv.size() < 2)
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throw m::NEED_MORE_PARAMS
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{
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"event_id path parameter required"
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};
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m::event::id::buf event_id
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{
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url::decode(event_id, request.parv[1])
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};
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const json::string &room_version
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{
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request.get("room_version", "1")
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};
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m::event event
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{
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request["event"], event_id
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};
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if(!json::get<"event_id"_>(event))
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if(room_version == "1" || room_version == "2")
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json::get<"event_id"_>(event) = event_id;
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if(!check_id(event, room_version))
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throw m::BAD_REQUEST
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{
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"Claimed event_id %s is incorrect.",
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string_view{event_id},
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};
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if(at<"room_id"_>(event) != room_id)
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throw m::error
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{
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http::NOT_MODIFIED, "M_MISMATCH_ROOM_ID",
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"ID of room in request body %s does not match path param %s",
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string_view{at<"room_id"_>(event)},
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string_view{room_id},
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};
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if(at<"type"_>(event) != "m.room.member")
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throw m::error
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{
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http::NOT_MODIFIED, "M_INVALID_TYPE",
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"event.type must be m.room.member"
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};
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if(unquote(at<"content"_>(event).at("membership")) != "invite")
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throw m::error
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{
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http::NOT_MODIFIED, "M_INVALID_CONTENT_MEMBERSHIP",
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"event.content.membership must be invite."
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};
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if(at<"origin"_>(event) != request.origin)
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throw m::error
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{
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http::FORBIDDEN, "M_INVALID_ORIGIN",
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"event.origin must be you."
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};
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const m::user::id &sender
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{
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at<"sender"_>(event)
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};
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if(sender.host() != request.origin)
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throw m::error
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{
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http::FORBIDDEN, "M_INVALID_ORIGIN",
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"event.sender must be your user."
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};
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const m::user::id &target
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{
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at<"state_key"_>(event)
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};
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if(!my_host(target.host()))
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throw m::error
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{
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http::FORBIDDEN, "M_INVALID_STATE_KEY",
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"event.state_key must be my user."
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};
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m::event::conforms non_conforms;
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const m::event::conforms report
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{
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event, non_conforms.report
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};
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if(!report.clean())
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throw m::error
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{
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http::NOT_MODIFIED, "M_INVALID_EVENT",
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"Proffered event has the following problems: %s",
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string(report)
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};
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// May conduct disk IO to check ACL
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if(m::room::server_acl::enable_write)
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if(!m::room::server_acl::check(room_id, request.node_id))
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throw m::ACCESS_DENIED
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{
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"You are not permitted by the room's server access control list."
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};
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// May conduct network IO to fetch node's key; disk IO to fetch node's key
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if(!verify(event, request.node_id))
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throw m::ACCESS_DENIED
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{
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"Invite event fails verification for %s",
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string_view{request.node_id},
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};
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thread_local char sigs[4_KiB];
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m::event signed_event
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{
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signatures(sigs, event)
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};
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signed_event.event_id = event_id;
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const json::strung signed_json
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{
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signed_event
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};
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// Send back the signed event first before eval. If we eval the signed
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// event first: the effects will occur before the inviting server has
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// the signed event returned from us; they might not consider the user
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// invited yet, causing trouble for the eval effects. That may actually
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// still happen due to the two separate TCP connections being uncoordinated
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// (one for this request, and another when m::eval effects connect to them
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// and make any requests). But either way if this call fails then we will
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// lose the invite but that may not be such a bad thing.
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resource::response response
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{
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client, json::members
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{
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{ "event", json::object{signed_json} }
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}
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};
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// Synapse needs time to process our response otherwise our eval below may
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// complete before this response arrives for them and is processed.
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ctx::sleep(milliseconds(*stream_cross_sleeptime));
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// Post processing, does not throw.
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process(client, request, event);
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// note: returning a resource response is a symbolic/indicator action to
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// the caller and has no real effect at the point of return.
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return response;
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}
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void
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process(client &client,
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const resource::request &request,
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const m::event &event)
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try
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{
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// Eval the dual-signed invite event. This will write it locally. This will
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// also try to sync the room as best as possible. The invitee will then be
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// presented with this invite request in their rooms list.
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m::vm::opts vmopts;
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vmopts.node_id = request.origin;
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// Synapse may 403 a fetch of the prev_event of the invite event.
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vmopts.fetch_prev_check = false;
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vmopts.fetch_prev = false;
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// Don't throw an exception for a re-evaluation; this will just be a no-op
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vmopts.nothrows |= m::vm::fault::EXISTS;
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m::vm::eval
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{
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event, vmopts
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};
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}
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catch(const std::exception &e)
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{
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log::error
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{
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m::log, "Processing invite from:%s to:%s :%s",
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json::get<"sender"_>(event),
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json::get<"state_key"_>(event),
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e.what(),
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};
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return;
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}
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