// Matrix Construct // // Copyright (C) Matrix Construct Developers, Authors & Contributors // Copyright (C) 2016-2019 Jason Volk // // 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; namespace { using user_devices_map = std::map; using host_users_map = std::map; using query_map = std::map; using failure_map = std::map>; using buffer_list = std::vector>; } static host_users_map parse_user_request(const json::object &device_keys); static bool send_request(const string_view &, const user_devices_map &, failure_map &, buffer_list &, query_map &); static query_map send_requests(const host_users_map &, buffer_list &, failure_map &); static void recv_response(const string_view &, m::fed::user::keys::claim &, failure_map &, json::stack::object &, const system_point &); static void recv_responses(query_map &, failure_map &, json::stack::object &, const milliseconds &); static void handle_failures(const failure_map &, json::stack::object &); static m::resource::response post__keys_claim(client &client, const m::resource::request &request); mapi::header IRCD_MODULE { "Client 14.11.5.2 :Key management API" }; ircd::m::resource claim_resource { "/_matrix/client/r0/keys/claim", { "(14.11.5.2.2) Keys claim", } }; m::resource::method method_post { claim_resource, "POST", post__keys_claim, { method_post.REQUIRES_AUTH } }; conf::item claim_timeout_default { { "name", "ircd.client.keys.claim.timeout.default" }, { "default", 20000L }, }; conf::item claim_timeout_min { { "name", "ircd.client.keys.claim.timeout.min" }, { "default", 5000L }, }; conf::item claim_timeout_max { { "name", "ircd.client.keys.claim.timeout.max" }, { "default", 30000L }, }; conf::item claim_limit { { "name", "ircd.client.keys.claim.limit" }, { "default", 4096L }, }; m::resource::response post__keys_claim(client &client, const m::resource::request &request) { const milliseconds timeout_min{claim_timeout_min}, timeout_max{claim_timeout_max}, timeout_default{claim_timeout_default}, timeout { std::clamp(request.get("timeout", timeout_default), timeout_min, timeout_max) }; const json::object &one_time_keys { request.at("one_time_keys") }; const host_users_map map { parse_user_request(one_time_keys) }; buffer_list buffers; failure_map failures; query_map queries { send_requests(map, buffers, failures) }; m::resource::response::chunked response { client, http::OK }; json::stack out { response.buf, response.flusher() }; json::stack::object top { out }; recv_responses(queries, failures, top, timeout); handle_failures(failures, top); return {}; } void handle_failures(const failure_map &failures, json::stack::object &out) { json::stack::object response_failures { out, "failures" }; for(const auto &[hostname, eptr] : failures) json::stack::member { response_failures, hostname, what(eptr) }; } void recv_responses(query_map &queries, failure_map &failures, json::stack::object &out, const milliseconds &timeout) { const system_point timedout { ircd::now() + timeout }; json::stack::object one_time_keys { out, "one_time_keys" }; for(auto &[remote, request] : queries) { assert(!failures.count(remote)); if(failures.count(remote)) continue; recv_response(remote, request, failures, one_time_keys, timedout); } } void recv_response(const string_view &remote, m::fed::user::keys::claim &request, failure_map &failures, json::stack::object &object, const system_point &timeout) try { const auto code { request.get_until(timeout) }; const json::object response { request }; const json::object &one_time_keys { response["one_time_keys"] }; for(const auto &[user_id, keys] : one_time_keys) json::stack::member { object, user_id, json::object{keys} }; } catch(const std::exception &e) { log::error { m::log, "user keys claim from %s :%s", remote, e.what() }; failures.emplace(remote, std::current_exception()); } query_map send_requests(const host_users_map &hosts, buffer_list &buffers, failure_map &failures) { query_map ret; for(const auto &[remote, user_devices] : hosts) send_request(remote, user_devices, failures, buffers, ret); return ret; } bool send_request(const string_view &remote, const user_devices_map &queries, failure_map &failures, buffer_list &buffers, query_map &ret) try { static const size_t buffer_unit_size { m::user::id::MAX_SIZE + 1 // 256 + 128 // device_id + 128 // algorithm }; static_assert(math::is_pow2(buffer_unit_size)); const size_t buffer_size { 8_KiB + // headers buffer_unit_size * std::min(queries.size(), size_t(claim_limit)) }; const auto &buffer { buffers.emplace_back(buffer_size) }; m::fed::user::keys::claim::opts opts; opts.remote = remote; ret.emplace ( std::piecewise_construct, std::forward_as_tuple(remote), std::forward_as_tuple(queries, buffer, std::move(opts)) ); return true; } catch(const std::exception &e) { log::error { m::log, "user keys claim to %s for %zu users :%s", remote, queries.size(), e.what() }; failures.emplace(remote, std::current_exception()); return false; } host_users_map parse_user_request(const json::object &one_time_keys) { host_users_map ret; for(const auto &[user_id, devices] : one_time_keys) { const string_view &host { m::user::id{user_id}.host() }; auto it(ret.lower_bound(host)); if(it == end(ret) || it->first != host) it = ret.emplace_hint(it, host, user_devices_map{}); user_devices_map &users(it->second); { auto it(users.lower_bound(user_id)); if(it == end(users) || it->first != user_id) it = users.emplace_hint(it, user_id, json::object{}); it->second = json::object{devices}; } } return ret; }