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construct/modules/federation/state_ids.cc

136 lines
2.5 KiB
C++

// Matrix Construct
//
// Copyright (C) Matrix Construct Developers, Authors & Contributors
// Copyright (C) 2016-2018 Jason Volk <jason@zemos.net>
//
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice is present in all copies. The
// full license for this software is available in the LICENSE file.
using namespace ircd;
mapi::header
IRCD_MODULE
{
"federation state_ids"
};
m::resource
state_ids_resource
{
"/_matrix/federation/v1/state_ids/",
{
"federation state_ids",
resource::DIRECTORY,
}
};
m::resource::response
get__state_ids(client &client,
const m::resource::request &request)
{
if(request.parv.size() < 1)
throw m::NEED_MORE_PARAMS
{
"room_id path parameter required"
};
m::room::id::buf room_id
{
url::decode(room_id, request.parv[0])
};
if(m::room::server_acl::enable_read && !m::room::server_acl::check(room_id, request.node_id))
throw m::ACCESS_DENIED
{
"You are not permitted by the room's server access control list."
};
m::event::id::buf event_id;
if(request.query["event_id"])
event_id = url::decode(event_id, request.query.at("event_id"));
const m::room room
{
room_id, event_id
};
if(!visible(room, request.node_id))
throw m::ACCESS_DENIED
{
"You are not permitted to view the room at this event"
};
const m::room::state state
{
room
};
const m::room::auth::chain ac
{
event_id?
m::index(event_id):
m::head_idx(room)
};
m::resource::response::chunked response
{
client, http::OK
};
json::stack out
{
response.buf, response.flusher()
};
json::stack::object top{out};
// auth_chain
if(request.query.get<bool>("auth_chain_ids", true))
{
json::stack::array auth_chain_ids
{
top, "auth_chain_ids"
};
ac.for_each([&auth_chain_ids]
(const m::event::idx &event_idx)
{
m::event_id(std::nothrow, event_idx, [&auth_chain_ids]
(const auto &event_id)
{
auth_chain_ids.append(event_id);
});
return true;
});
}
// pdu_ids
if(request.query.get<bool>("pdu_ids", true))
{
json::stack::array pdu_ids
{
top, "pdu_ids"
};
state.for_each(m::event::id::closure{[&pdu_ids]
(const m::event::id &event_id)
{
pdu_ids.append(event_id);
return true;
}});
}
return std::move(response);
}
m::resource::method
method_get
{
state_ids_resource, "GET", get__state_ids,
{
method_get.VERIFY_ORIGIN
}
};