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construct/modules/federation/user_keys_claim.cc
2022-06-29 14:42:42 -07:00

138 lines
2.7 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 response
{
client, http::OK
};
json::stack out
{
response.buf, response.flusher()
};
json::stack::object top
{
out
};
json::stack::object response_keys
{
top, "one_time_keys"
};
for(const auto &[user_id, devices] : one_time_keys)
{
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 json::string &algorithm{algorithm_};
const json::string &device_id{device_id_};
const auto match{[&device_id]
(const string_view &state_key) noexcept
{
return state_key == device_id;
}};
char buf[m::event::TYPE_MAX_SIZE];
const string_view type{fmt::sprintf
{
buf, "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([&response_device, &match]
(const string_view &type, const auto &, const m::event::idx &event_idx)
{
if(!m::query(std::nothrow, event_idx, "state_key", match))
return true;
m::get(std::nothrow, event_idx, "content", [&response_device, type]
(const json::object &content)
{
const auto algorithm
{
split(type, '|').second
};
json::stack::member
{
response_device, algorithm, json::object
{
content[""] // device quirk
}
};
});
return false;
});
}
}
return {};
}