mirror of
https://github.com/matrix-construct/construct
synced 2024-08-25 19:12:08 +02:00
1000 lines
18 KiB
C++
1000 lines
18 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) 2016-2018 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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ircd::mapi::header
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IRCD_MODULE
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{
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"Server keys"
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,ircd::m::self::init::keys
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};
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std::ostream &
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IRCD_MODULE_EXPORT
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ircd::m::pretty_oneline(std::ostream &s,
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const m::keys &keys)
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{
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s << json::get<"server_name"_>(keys)
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<< ' ';
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char smbuf[32];
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s << smalldate(smbuf, json::get<"valid_until_ts"_>(keys) / 1000L)
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<< " (" << json::get<"valid_until_ts"_>(keys) << ")"
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<< ' ';
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for(const json::object &fp : json::get<"tls_fingerprints"_>(keys))
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{
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s << "tls[ ";
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for(const auto &[digest, fingerprint] : fp)
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s << digest << ' ';
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s << "] ";
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}
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for(const auto &[domain, signature_] : json::get<"signatures"_>(keys))
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{
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s << "sig[ " << domain << ' ';
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for(const auto &[key_id, signature] : json::object(signature_))
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s << key_id << ' ';
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s << "] ";
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}
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for(const auto &[domain, verify_key_] : json::get<"verify_keys"_>(keys))
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{
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s << "key[ " << domain << ' ';
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for(const auto &[key_id, verify_key] : json::object(verify_key_))
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s << key_id << ' ';
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s << "] ";
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}
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return s;
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}
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std::ostream &
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IRCD_MODULE_EXPORT
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ircd::m::pretty(std::ostream &s,
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const m::keys &keys)
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{
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s << std::setw(16) << std::right << "server name "
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<< json::get<"server_name"_>(keys)
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<< '\n';
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char tmbuf[64];
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s << std::setw(16) << std::right << "valid until "
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<< timef(tmbuf, json::get<"valid_until_ts"_>(keys) / 1000, ircd::localtime)
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<< " (" << json::get<"valid_until_ts"_>(keys) << ")"
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<< '\n';
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for(const json::object &fp : json::get<"tls_fingerprints"_>(keys))
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for(const auto &[digest, fingerprint] : fp)
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s << std::setw(16) << std::right << "[fingerprint] "
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<< digest << ' ' << unquote(fingerprint)
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<< '\n';
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for(const auto &[domain, signature_] : json::get<"signatures"_>(keys))
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for(const auto &[key_id, signature] : json::object(signature_))
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s << std::setw(16) << std::right << "[signature] "
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<< domain << ' '
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<< key_id << ' '
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<< unquote(signature) << '\n';
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for(const auto &[domain, verify_key_] : json::get<"verify_keys"_>(keys))
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for(const auto &[key_id, verify_key] : json::object(verify_key_))
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s << std::setw(16) << std::right << "[verify_key] "
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<< domain << ' '
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<< key_id << ' '
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<< unquote(verify_key) << '\n';
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for(const auto &[domain, old_verify_key_] : json::get<"old_verify_keys"_>(keys))
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for(const auto &[key_id, old_verify_key] : json::object(old_verify_key_))
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s << std::setw(16) << std::right << "[old_verify_key] "
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<< domain << ' '
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<< key_id << ' '
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<< unquote(old_verify_key) << '\n';
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return s;
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}
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bool
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IRCD_MODULE_EXPORT
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ircd::m::verify(const m::keys &keys,
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std::nothrow_t)
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noexcept try
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{
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verify(keys);
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return true;
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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, "key verification for '%s' failed :%s",
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json::get<"server_name"_>(keys, "<no server name>"_sv),
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e.what()
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};
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return false;
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}
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void
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IRCD_MODULE_EXPORT
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ircd::m::verify(const m::keys &keys)
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{
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const json::object &verify_keys
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{
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at<"verify_keys"_>(keys)
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};
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const string_view &key_id
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{
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begin(verify_keys)->first
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};
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const json::object &key
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{
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begin(verify_keys)->second
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};
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const ed25519::pk pk
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{
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[&key](auto &pk)
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{
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b64decode(pk, unquote(key.at("key")));
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}
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};
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const json::object &signatures
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{
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at<"signatures"_>(keys)
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};
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const string_view &server_name
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{
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unquote(at<"server_name"_>(keys))
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};
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const json::object &server_signatures
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{
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signatures.at(server_name)
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};
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const ed25519::sig sig
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{
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[&server_signatures, &key_id](auto &sig)
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{
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b64decode(sig, unquote(server_signatures.at(key_id)));
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}
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};
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m::keys copy{keys};
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at<"signatures"_>(copy) = string_view{};
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thread_local char buf[16_KiB];
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const const_buffer preimage
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{
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json::stringify(mutable_buffer{buf}, copy)
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};
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if(!pk.verify(preimage, sig))
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throw m::error
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{
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http::UNAUTHORIZED, "M_INVALID_SIGNATURE",
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"Failed to verify signature for public key of '%s'",
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server_name
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};
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if(expired(keys))
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log::warning
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{
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m::log, "key '%s' for '%s' expired on %s.",
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key_id,
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json::get<"server_name"_>(keys, "<no server name>"_sv),
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timestr(at<"valid_until_ts"_>(keys) / 1000L),
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};
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}
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bool
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IRCD_MODULE_EXPORT
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ircd::m::expired(const m::keys &keys)
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{
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const auto &valid_until_ts
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{
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at<"valid_until_ts"_>(keys)
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};
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return valid_until_ts < ircd::time<milliseconds>();
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}
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//
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// query
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//
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namespace ircd::m
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{
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extern conf::item<milliseconds> keys_query_timeout;
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}
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decltype(ircd::m::keys_query_timeout)
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ircd::m::keys_query_timeout
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{
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{ "name", "ircd.keys.query.timeout" },
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{ "default", 20000L }
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};
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void
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IRCD_MODULE_EXPORT
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ircd::m::keys::query(const string_view &query_server,
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const queries &queries,
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const closure_bool &closure)
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try
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{
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assert(!query_server.empty());
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m::v1::key::opts opts;
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opts.remote = net::hostport{query_server};
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opts.dynamic = true;
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const unique_buffer<mutable_buffer> buf
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{
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16_KiB
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};
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m::v1::key::query request
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{
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queries, buf, std::move(opts)
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};
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request.wait(milliseconds(keys_query_timeout));
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const auto &code(request.get());
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const json::array response
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{
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request
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};
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for(const json::object &key : response) try
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{
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verify(m::keys{key});
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if(!closure(key))
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continue;
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cache::set(key);
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}
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catch(const std::exception &e)
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{
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log::derror
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{
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"Failed to verify keys for '%s' from '%s' :%s",
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key.get("server_name"),
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query_server,
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e.what()
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};
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}
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}
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catch(const ctx::timeout &e)
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{
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throw m::error
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{
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http::REQUEST_TIMEOUT, "M_TIMEOUT",
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"Failed to query keys from '%s' in time",
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query_server
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};
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}
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//
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// get
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//
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namespace ircd::m
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{
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extern conf::item<milliseconds> keys_get_timeout;
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}
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decltype(ircd::m::keys_get_timeout)
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ircd::m::keys_get_timeout
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{
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{ "name", "ircd.keys.get.timeout" },
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{ "default", 20000L }
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};
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size_t
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IRCD_MODULE_EXPORT
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ircd::m::keys::fetch(const queries &queries)
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{
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size_t ret(0);
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get(queries, [&ret](const auto &)
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{
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++ret;
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return true;
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});
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return ret;
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}
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void
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IRCD_MODULE_EXPORT
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ircd::m::keys::get(const string_view &server_name,
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const closure &closure)
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{
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return get(server_name, string_view{}, closure);
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}
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void
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IRCD_MODULE_EXPORT
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ircd::m::keys::get(const string_view &server_name,
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const string_view &key_id,
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const closure &closure)
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try
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{
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assert(!server_name.empty());
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if(cache::get(server_name, key_id, closure))
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return;
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if(server_name == my_host())
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throw m::NOT_FOUND
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{
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"keys for '%s' (that's myself) not found", server_name
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};
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log::debug
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{
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m::log, "Keys for %s not cached; querying network...", server_name
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};
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m::v1::key::opts opts;
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const unique_buffer<mutable_buffer> buf
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{
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16_KiB
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};
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m::v1::key::keys request
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{
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server_name, buf, std::move(opts)
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};
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request.wait(milliseconds(keys_get_timeout));
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const auto &status(request.get());
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const json::object response
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{
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request
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};
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const json::object &keys
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{
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response
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};
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verify(m::keys(keys));
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log::debug
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{
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m::log, "Verified keys from '%s'", server_name
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};
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cache::set(keys);
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closure(keys);
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}
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catch(const ctx::timeout &e)
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{
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throw m::error
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{
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http::REQUEST_TIMEOUT, "M_TIMEOUT",
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"Failed to fetch keys for '%s' in time",
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server_name
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};
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}
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bool
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IRCD_MODULE_EXPORT
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ircd::m::keys::get(const queries &queries,
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const closure_bool &closure)
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{
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bool ret{true};
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std::vector<m::feds::opts> opts;
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opts.reserve(queries.size());
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for(const auto &[server_name, key_id] : queries)
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{
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const bool cached
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{
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cache::get(server_name, key_id, [&ret, &closure]
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(const auto &object)
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{
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ret = closure(object);
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})
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};
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if(!ret)
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return ret;
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if(cached)
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continue;
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if(my_host(server_name))
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{
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log::derror
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{
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m::log, "key '%s' for '%s' (that's myself) not found.",
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key_id,
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server_name,
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};
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continue;
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}
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log::debug
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{
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m::log, "Key '%s' for %s not cached; querying network...",
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key_id,
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server_name,
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};
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opts.emplace_back();
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opts.back().op = feds::op::keys;
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opts.back().arg[0] = server_name;
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opts.back().arg[1] = key_id;
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}
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assert(opts.size() <= queries.size());
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m::feds::execute(opts, [&ret, &closure]
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(const auto &result)
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{
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if(empty(result.object))
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return true;
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const m::keys keys
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{
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result.object
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};
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if(!verify(keys, std::nothrow))
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{
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log::derror
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{
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m::log, "Failed to verify key '%s' for '%s' from '%s'",
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result.request->arg[0],
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result.request->arg[1],
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result.origin,
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};
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return true;
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}
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cache::set(result.object);
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ret = closure(result.object);
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return ret;
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});
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return ret;
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}
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//
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// m::keys::cache
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//
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size_t
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IRCD_MODULE_EXPORT
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ircd::m::keys::cache::set(const json::object &keys)
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{
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const json::string &server_name
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{
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keys.at("server_name")
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};
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const m::node::room node_room
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{
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server_name
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};
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if(!exists(node_room.room_id))
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create(node_room, m::me.user_id);
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const json::object &vks
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{
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keys.at("verify_keys")
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};
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size_t ret{0};
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for(const auto &member : vks)
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{
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if(ret > 16)
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return ret;
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const auto &key_id(unquote(member.first));
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send(node_room, m::me.user_id, "ircd.key", key_id, keys);
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++ret;
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}
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return ret;
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}
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bool
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IRCD_MODULE_EXPORT
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ircd::m::keys::cache::get(const string_view &server_name,
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const string_view &key_id,
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const keys::closure &closure)
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{
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const m::node::room node_room
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{
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server_name
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};
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// Without a key_id we search for the most recent key; note this is not
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// the same as making a state_key="" query, as that would be an actual
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// ircd.key entry without an id (which shouldn't exist).
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const event::idx &event_idx
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{
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key_id?
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node_room.get(std::nothrow, "ircd.key", key_id):
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node_room.get(std::nothrow, "ircd.key")
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};
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if(!event_idx)
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return false;
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return m::get(std::nothrow, event_idx, "content", closure);
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}
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bool
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IRCD_MODULE_EXPORT
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ircd::m::keys::cache::for_each(const string_view &server_name,
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const keys::closure_bool &closure)
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{
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const m::node::room node_room
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{
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server_name
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};
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const m::room::state state
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{
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node_room
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};
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return state.for_each("ircd.key", [&closure]
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(const auto &type, const auto &key_id, const auto event_idx)
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{
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bool ret{true};
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m::get(std::nothrow, event_idx, "content", [&closure, &ret]
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(const json::object &content)
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{
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ret = closure(content);
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});
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return ret;
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});
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}
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///////////////////////////////////////////////////////////////////////////////
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//
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// (internal) ed25519 support sanity test
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//
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#ifdef RB_DEBUG
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#define TEST_ED25519 __attribute__((constructor))
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#else
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#define TEST_ED25519
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#endif
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namespace ircd
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{
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static void _test_ed25519() noexcept TEST_ED25519;
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}
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void
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ircd::_test_ed25519()
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noexcept try
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{
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char seed_buf[ed25519::SEED_SZ + 10];
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const auto seed
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{
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b64decode(seed_buf, "YJDBA9Xnr2sVqXD9Vj7XVUnmFZcZrlw8Md7kMW+3XA1")
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};
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ed25519::pk pk;
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ed25519::sk sk{&pk, seed};
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const auto SERVER_NAME {"domain"};
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const auto KEY_ID {"ed25519:1"};
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const auto test{[&]
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(const std::string &object) -> bool
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{
|
|
const auto sig
|
|
{
|
|
sk.sign(const_buffer{object})
|
|
};
|
|
|
|
char sigb64_buf[128];
|
|
const auto sigb64
|
|
{
|
|
b64encode_unpadded(sigb64_buf, sig)
|
|
};
|
|
|
|
ed25519::sig unsig; const auto unsigb64
|
|
{
|
|
b64decode(unsig, sigb64)
|
|
};
|
|
|
|
return pk.verify(const_buffer{object}, unsig);
|
|
}};
|
|
|
|
const bool tests[]
|
|
{
|
|
test(std::string{json::object
|
|
{
|
|
"{}"
|
|
}}),
|
|
|
|
test(json::strung(json::members
|
|
{
|
|
{ "one", 1L },
|
|
{ "two", "Two" }
|
|
})),
|
|
};
|
|
|
|
if(!std::all_of(begin(tests), end(tests), [](const bool &b) { return b; }))
|
|
throw ircd::panic
|
|
{
|
|
"Seeded ed25519 test failed"
|
|
};
|
|
}
|
|
catch(...)
|
|
{
|
|
ircd::terminate
|
|
{
|
|
std::current_exception()
|
|
};
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// m/self.h
|
|
//
|
|
|
|
//
|
|
// self::init
|
|
//
|
|
|
|
void
|
|
IRCD_MODULE_EXPORT
|
|
ircd::m::self::init::keys()
|
|
{
|
|
tls_certificate();
|
|
federation_ed25519();
|
|
}
|
|
|
|
namespace ircd::m::self
|
|
{
|
|
extern conf::item<std::string> tls_key_dir;
|
|
}
|
|
|
|
decltype(ircd::m::self::tls_key_dir)
|
|
ircd::m::self::tls_key_dir
|
|
{
|
|
{ "name", "ircd.keys.tls_key_dir" },
|
|
{ "default", fs::cwd() }
|
|
};
|
|
|
|
void
|
|
IRCD_MODULE_EXPORT
|
|
ircd::m::self::init::tls_certificate()
|
|
{
|
|
if(empty(self::origin))
|
|
throw error
|
|
{
|
|
"The m::self::origin must be set to init my ed25519 key."
|
|
};
|
|
|
|
const std::string private_key_path_parts[]
|
|
{
|
|
std::string{tls_key_dir},
|
|
self::origin + ".crt.key",
|
|
};
|
|
|
|
const std::string public_key_path_parts[]
|
|
{
|
|
std::string{tls_key_dir},
|
|
self::origin + ".crt.key.pub",
|
|
};
|
|
|
|
const std::string dhparam_path_parts[]
|
|
{
|
|
std::string{tls_key_dir},
|
|
self::origin + ".crt.dh",
|
|
};
|
|
|
|
const std::string certificate_path_parts[]
|
|
{
|
|
std::string{tls_key_dir},
|
|
self::origin + ".crt",
|
|
};
|
|
|
|
const std::string private_key_file
|
|
{
|
|
fs::path_string(private_key_path_parts)
|
|
};
|
|
|
|
const std::string public_key_file
|
|
{
|
|
fs::path_string(public_key_path_parts)
|
|
};
|
|
|
|
const std::string cert_file
|
|
{
|
|
fs::path_string(certificate_path_parts)
|
|
};
|
|
|
|
if(!fs::exists(private_key_file) && !ircd::write_avoid)
|
|
{
|
|
log::warning
|
|
{
|
|
"Failed to find certificate private key @ `%s'; creating...",
|
|
private_key_file
|
|
};
|
|
|
|
openssl::genrsa(private_key_file, public_key_file);
|
|
}
|
|
|
|
const json::object config{};
|
|
if(!fs::exists(cert_file) && !ircd::write_avoid)
|
|
{
|
|
const json::object &certificate
|
|
{
|
|
config.get("certificate")
|
|
};
|
|
|
|
const json::object &self_
|
|
{
|
|
certificate.get(self::origin)
|
|
};
|
|
|
|
std::string subject
|
|
{
|
|
self_.get("subject")
|
|
};
|
|
|
|
if(empty(subject))
|
|
subject = json::strung{json::members
|
|
{
|
|
{ "CN", self::origin }
|
|
}};
|
|
|
|
log::warning
|
|
{
|
|
"Failed to find SSL certificate @ `%s'; creating for '%s'...",
|
|
cert_file,
|
|
self::origin
|
|
};
|
|
|
|
const unique_buffer<mutable_buffer> buf
|
|
{
|
|
1_MiB
|
|
};
|
|
|
|
const json::strung opts{json::members
|
|
{
|
|
{ "private_key_pem_path", private_key_file },
|
|
{ "public_key_pem_path", public_key_file },
|
|
{ "subject", subject },
|
|
}};
|
|
|
|
const auto cert
|
|
{
|
|
openssl::genX509_rsa(buf, opts)
|
|
};
|
|
|
|
fs::overwrite(cert_file, cert);
|
|
}
|
|
|
|
const auto cert_pem
|
|
{
|
|
fs::read(cert_file)
|
|
};
|
|
|
|
const unique_buffer<mutable_buffer> der_buf
|
|
{
|
|
8_KiB
|
|
};
|
|
|
|
const auto cert_der
|
|
{
|
|
openssl::cert2d(der_buf, cert_pem)
|
|
};
|
|
|
|
const fixed_buffer<const_buffer, crh::sha256::digest_size> hash
|
|
{
|
|
sha256{cert_der}
|
|
};
|
|
|
|
m::self::tls_cert_der_sha256_b64 =
|
|
{
|
|
b64encode_unpadded(hash)
|
|
};
|
|
|
|
log::info
|
|
{
|
|
m::log, "Certificate `%s' :PEM %zu bytes; DER %zu bytes; sha256b64 %s",
|
|
cert_file,
|
|
cert_pem.size(),
|
|
ircd::size(cert_der),
|
|
m::self::tls_cert_der_sha256_b64
|
|
};
|
|
|
|
const unique_buffer<mutable_buffer> print_buf
|
|
{
|
|
8_KiB
|
|
};
|
|
|
|
log::info
|
|
{
|
|
m::log, "Certificate `%s' :%s",
|
|
cert_file,
|
|
openssl::print_subject(print_buf, cert_pem)
|
|
};
|
|
}
|
|
|
|
//
|
|
// federation_ed25519
|
|
//
|
|
|
|
namespace ircd::m::self
|
|
{
|
|
extern conf::item<std::string> ed25519_key_dir;
|
|
}
|
|
|
|
decltype(ircd::m::self::ed25519_key_dir)
|
|
ircd::m::self::ed25519_key_dir
|
|
{
|
|
{ "name", "ircd.keys.ed25519_key_dir" },
|
|
{ "default", fs::cwd() }
|
|
};
|
|
|
|
void
|
|
IRCD_MODULE_EXPORT
|
|
ircd::m::self::init::federation_ed25519()
|
|
{
|
|
if(empty(m::self::origin))
|
|
throw error
|
|
{
|
|
"The m::self::origin must be set to init my ed25519 key."
|
|
};
|
|
|
|
const std::string path_parts[]
|
|
{
|
|
std::string{ed25519_key_dir},
|
|
m::self::origin + ".ed25519",
|
|
};
|
|
|
|
const std::string sk_file
|
|
{
|
|
ircd::string(fs::PATH_MAX_LEN, [&](const mutable_buffer &buf)
|
|
{
|
|
return fs::path(buf, path_parts);
|
|
})
|
|
};
|
|
|
|
if(fs::exists(sk_file) || ircd::write_avoid)
|
|
log::info
|
|
{
|
|
m::log, "Using ed25519 secret key @ `%s'", sk_file
|
|
};
|
|
else
|
|
log::notice
|
|
{
|
|
m::log, "Creating ed25519 secret key @ `%s'", sk_file
|
|
};
|
|
|
|
m::self::secret_key = ed25519::sk
|
|
{
|
|
sk_file, &m::self::public_key
|
|
};
|
|
|
|
m::self::public_key_b64 = b64encode_unpadded(m::self::public_key);
|
|
const fixed_buffer<const_buffer, sha256::digest_size> hash
|
|
{
|
|
sha256{m::self::public_key}
|
|
};
|
|
|
|
const auto public_key_hash_b58
|
|
{
|
|
b58encode(hash)
|
|
};
|
|
|
|
static const auto trunc_size{8};
|
|
m::self::public_key_id = fmt::snstringf
|
|
{
|
|
32, "ed25519:%s", trunc(public_key_hash_b58, trunc_size)
|
|
};
|
|
|
|
log::info
|
|
{
|
|
m::log, "Current key is '%s' and the public key is: %s",
|
|
m::self::public_key_id,
|
|
m::self::public_key_b64
|
|
};
|
|
}
|
|
|
|
//
|
|
// create_my_key
|
|
//
|
|
|
|
namespace ircd::m::self
|
|
{
|
|
extern m::hookfn<m::vm::eval &> create_my_key_hook;
|
|
}
|
|
|
|
decltype(ircd::m::self::create_my_key_hook)
|
|
ircd::m::self::create_my_key_hook
|
|
{
|
|
{
|
|
{ "_site", "vm.effect" },
|
|
{ "room_id", m::my_node.room_id() },
|
|
{ "type", "m.room.create" },
|
|
},
|
|
[](const m::event &, m::vm::eval &)
|
|
{
|
|
create_my_key();
|
|
}
|
|
};
|
|
|
|
void
|
|
IRCD_MODULE_EXPORT
|
|
ircd::m::self::create_my_key()
|
|
{
|
|
const json::members verify_keys_
|
|
{{
|
|
string_view{m::self::public_key_id},
|
|
{
|
|
{ "key", m::self::public_key_b64 }
|
|
}
|
|
}};
|
|
|
|
const json::members tlsfps
|
|
{
|
|
{ "sha256", m::self::tls_cert_der_sha256_b64 }
|
|
};
|
|
|
|
const json::value tlsfp[1]
|
|
{
|
|
{ tlsfps }
|
|
};
|
|
|
|
m::keys my_key;
|
|
json::get<"server_name"_>(my_key) = my_host();
|
|
json::get<"old_verify_keys"_>(my_key) = "{}";
|
|
|
|
//TODO: conf
|
|
json::get<"valid_until_ts"_>(my_key) =
|
|
ircd::time<milliseconds>() + milliseconds(1000UL * 60 * 60 * 24 * 180).count();
|
|
|
|
const json::strung verify_keys{verify_keys_}; // must be on stack until my_keys serialized.
|
|
json::get<"verify_keys"_>(my_key) = verify_keys;
|
|
|
|
const json::strung tls_fingerprints{json::value{tlsfp, 1}}; // must be on stack until my_keys serialized.
|
|
json::get<"tls_fingerprints"_>(my_key) = tls_fingerprints;
|
|
|
|
const json::strung presig
|
|
{
|
|
my_key
|
|
};
|
|
|
|
const ed25519::sig sig
|
|
{
|
|
m::self::secret_key.sign(const_buffer{presig})
|
|
};
|
|
|
|
char signature[256];
|
|
const json::strung signatures{json::members
|
|
{
|
|
{ my_host(),
|
|
{
|
|
{ string_view{m::self::public_key_id}, b64encode_unpadded(signature, sig) }
|
|
}}
|
|
}};
|
|
|
|
json::get<"signatures"_>(my_key) = signatures;
|
|
keys::cache::set(json::strung{my_key});
|
|
}
|