construct/modules/federation/user_keys_claim.cc

153 lines
3.0 KiB
C++

// Matrix Construct
//
// Copyright (C) Matrix Construct Developers, Authors & Contributors
// Copyright (C) 2016-2019 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;
static m::resource::response
post__user_keys_claim(client &client,
const m::resource::request &request);
mapi::header
IRCD_MODULE
{
"Federation 22 :End-to-End Encryption"
};
m::resource
user_keys_claim_resource
{
"/_matrix/federation/v1/user/keys/claim",
{
"Federation 22 :Claims one-time keys for use in pre-key messages.",
}
};
m::resource::method
user_keys_claim__post
{
user_keys_claim_resource, "POST", post__user_keys_claim,
{
user_keys_claim__post.VERIFY_ORIGIN
}
};
m::resource::response
post__user_keys_claim(client &client,
const m::resource::request &request)
{
const json::object &one_time_keys
{
request["one_time_keys"]
};
m::resource::response::chunked::json response
{
client, http::OK
};
json::stack::object response_keys
{
response, "one_time_keys"
};
for(const auto &[user_id_, devices] : one_time_keys)
{
const m::user::id user_id
{
user_id_
};
if(!m::exists(user_id))
continue;
const m::user::room user_room
{
user_id
};
json::stack::object response_user
{
response_keys, user_id
};
for(const auto &[device_id_, algorithm_] : json::object(devices))
{
const auto &device_id{device_id_};
const json::string &algorithm{algorithm_};
const fmt::bsprintf<m::event::TYPE_MAX_SIZE> type
{
"ircd.device.one_time_key|%s",
algorithm
};
const m::room::type events
{
user_room, type, { -1UL, -1L }, true
};
json::stack::object response_device
{
response_user, device_id
};
events.for_each([&user_room, &response_device, &device_id, &algorithm]
(const string_view &type, const auto &, const m::event::idx &event_idx)
{
if(m::redacted(event_idx))
return true;
const bool match
{
m::query(std::nothrow, event_idx, "state_key", [&device_id]
(const string_view &state_key) noexcept
{
return state_key == device_id;
})
};
if(!match)
return true;
const bool fetched
{
m::get(std::nothrow, event_idx, "content", [&response_device, &algorithm]
(const json::object &content)
{
json::stack::member
{
response_device, algorithm, json::object
{
content[""] // ircd.device.* quirk
}
};
})
};
if(!fetched)
return true;
const auto event_id
{
m::event_id(event_idx)
};
const auto redact_id
{
m::redact(user_room, user_room.user, event_id, "claimed")
};
return false;
});
}
}
return response;
}