319 lines
7.2 KiB
C++
319 lines
7.2 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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namespace ircd::m
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{
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constexpr size_t event_conforms_num{num_of<event::conforms::code>()};
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extern const std::array<string_view, event_conforms_num> event_conforms_reflects;
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}
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decltype(ircd::m::event_conforms_reflects)
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ircd::m::event_conforms_reflects
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{
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"INVALID_OR_MISSING_EVENT_ID",
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"INVALID_OR_MISSING_ROOM_ID",
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"INVALID_OR_MISSING_SENDER_ID",
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"MISSING_TYPE",
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"INVALID_TYPE",
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"MISSING_ORIGIN",
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"INVALID_ORIGIN",
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"INVALID_STATE_KEY",
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"INVALID_OR_MISSING_REDACTS_ID",
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"MISSING_CONTENT_MEMBERSHIP",
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"INVALID_CONTENT_MEMBERSHIP",
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"MISSING_MEMBER_STATE_KEY",
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"INVALID_MEMBER_STATE_KEY",
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"MISSING_PREV_EVENTS",
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"MISSING_AUTH_EVENTS",
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"DEPTH_NEGATIVE",
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"DEPTH_ZERO",
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"MISSING_SIGNATURES",
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"MISSING_ORIGIN_SIGNATURE",
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"MISMATCH_ORIGIN_SENDER",
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"MISMATCH_CREATE_SENDER",
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"MISMATCH_ALIASES_STATE_KEY",
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"SELF_REDACTS",
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"SELF_PREV_EVENT",
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"SELF_AUTH_EVENT",
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"DUP_PREV_EVENT",
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"DUP_AUTH_EVENT",
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"MISMATCH_EVENT_ID",
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"MISSING_HASHES",
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"MISMATCH_HASHES",
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};
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std::ostream &
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ircd::m::operator<<(std::ostream &s, const event::conforms &conforms)
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{
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thread_local char buf[1024];
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s << conforms.string(buf);
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return s;
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}
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ircd::string_view
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ircd::m::reflect(const event::conforms::code &code)
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try
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{
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return event_conforms_reflects.at(code);
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}
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catch(const std::out_of_range &e)
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{
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return "??????"_sv;
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}
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ircd::m::event::conforms::code
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ircd::m::event::conforms::reflect(const string_view &name)
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{
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const auto it
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{
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std::find(begin(event_conforms_reflects), end(event_conforms_reflects), name)
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};
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if(it == end(event_conforms_reflects))
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throw std::out_of_range
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{
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"There is no event::conforms code by that name."
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};
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return code(std::distance(begin(event_conforms_reflects), it));
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}
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ircd::m::event::conforms::conforms(const event &e,
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const uint64_t &skip)
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:conforms{e}
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{
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report &= ~skip;
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}
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ircd::m::event::conforms::conforms(const event &e)
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try
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:report{0}
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{
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if(!e.event_id)
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set(INVALID_OR_MISSING_EVENT_ID);
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if(defined(json::get<"event_id"_>(e)))
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if(!valid(m::id::EVENT, json::get<"event_id"_>(e)))
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set(INVALID_OR_MISSING_EVENT_ID);
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if(!has(INVALID_OR_MISSING_EVENT_ID))
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if(!m::check_id(e))
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set(MISMATCH_EVENT_ID);
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if(empty(json::get<"hashes"_>(e)))
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set(MISSING_HASHES);
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if(!has(MISMATCH_HASHES) && !has(MISSING_HASHES))
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if(!m::verify_hash(e))
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set(MISMATCH_HASHES);
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if(!valid(m::id::ROOM, json::get<"room_id"_>(e)))
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set(INVALID_OR_MISSING_ROOM_ID);
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if(!valid(m::id::USER, json::get<"sender"_>(e)))
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set(INVALID_OR_MISSING_SENDER_ID);
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if(empty(json::get<"type"_>(e)))
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set(MISSING_TYPE);
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if(json::get<"type"_>(e).size() > event::TYPE_MAX_SIZE)
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set(INVALID_TYPE);
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if(empty(json::get<"origin"_>(e)))
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set(MISSING_ORIGIN);
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if(json::get<"origin"_>(e).size() > event::ORIGIN_MAX_SIZE)
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set(INVALID_ORIGIN);
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if(!rfc3986::valid_remote(std::nothrow, json::get<"origin"_>(e)))
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set(INVALID_ORIGIN);
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if(json::get<"state_key"_>(e).size() > event::STATE_KEY_MAX_SIZE)
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set(INVALID_STATE_KEY);
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if(empty(json::get<"signatures"_>(e)))
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set(MISSING_SIGNATURES);
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if(empty(json::object{json::get<"signatures"_>(e).get(json::get<"origin"_>(e))}))
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set(MISSING_ORIGIN_SIGNATURE);
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if(!has(INVALID_OR_MISSING_SENDER_ID))
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if(json::get<"origin"_>(e) != m::id::user{json::get<"sender"_>(e)}.host())
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set(MISMATCH_ORIGIN_SENDER);
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if(json::get<"type"_>(e) == "m.room.create")
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if(m::room::id(json::get<"room_id"_>(e)).host() != m::user::id(json::get<"sender"_>(e)).host())
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set(MISMATCH_CREATE_SENDER);
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if(json::get<"type"_>(e) == "m.room.aliases")
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if(m::user::id(json::get<"sender"_>(e)).host() != json::get<"state_key"_>(e))
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set(MISMATCH_ALIASES_STATE_KEY);
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if(json::get<"type"_>(e) == "m.room.redaction")
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if(!valid(m::id::EVENT, json::get<"redacts"_>(e)))
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set(INVALID_OR_MISSING_REDACTS_ID);
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if(json::get<"redacts"_>(e))
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if(json::get<"redacts"_>(e) == e.event_id)
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set(SELF_REDACTS);
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if(json::get<"type"_>(e) == "m.room.member")
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if(empty(unquote(json::get<"content"_>(e).get("membership"))))
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set(MISSING_CONTENT_MEMBERSHIP);
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if(json::get<"type"_>(e) == "m.room.member")
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if(!all_of<std::islower>(unquote(json::get<"content"_>(e).get("membership"))))
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set(INVALID_CONTENT_MEMBERSHIP);
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if(json::get<"type"_>(e) == "m.room.member")
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if(empty(json::get<"state_key"_>(e)))
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set(MISSING_MEMBER_STATE_KEY);
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if(json::get<"type"_>(e) == "m.room.member")
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if(!valid(m::id::USER, json::get<"state_key"_>(e)))
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set(INVALID_MEMBER_STATE_KEY);
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if(json::get<"type"_>(e) != "m.room.create")
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if(empty(json::get<"prev_events"_>(e)))
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set(MISSING_PREV_EVENTS);
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if(json::get<"type"_>(e) != "m.room.create")
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if(empty(json::get<"auth_events"_>(e)))
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set(MISSING_AUTH_EVENTS);
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if(json::get<"depth"_>(e) != json::undefined_number && json::get<"depth"_>(e) < 0)
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set(DEPTH_NEGATIVE);
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if(json::get<"type"_>(e) != "m.room.create")
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if(json::get<"depth"_>(e) == 0)
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set(DEPTH_ZERO);
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const event::prev prev{e};
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const event::auth auth{e};
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if(json::get<"event_id"_>(e))
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{
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for(size_t i(0); i < auth.auth_events_count(); ++i)
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if(auth.auth_event(i) == json::get<"event_id"_>(e))
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set(SELF_AUTH_EVENT);
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for(size_t i(0); i < prev.prev_events_count(); ++i)
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if(prev.prev_event(i) == json::get<"event_id"_>(e))
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set(SELF_PREV_EVENT);
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}
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for(size_t i(0); i < auth.auth_events_count(); ++i)
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{
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const auto &[event_id, ref_hash]
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{
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auth.auth_events(i)
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};
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for(size_t j(0); j < auth.auth_events_count(); ++j)
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if(i != j)
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if(event_id == auth.auth_event(j))
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set(DUP_AUTH_EVENT);
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}
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for(size_t i(0); i < prev.prev_events_count(); ++i)
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{
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const auto &[event_id, ref_hash]
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{
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prev.prev_events(i)
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};
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for(size_t j(0); j < prev.prev_events_count(); ++j)
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if(i != j)
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if(event_id == prev.prev_event(j))
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set(DUP_PREV_EVENT);
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}
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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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log, "Unable to complete conformity check :%s",
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_e.what(),
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};
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throw;
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}
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void
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ircd::m::event::conforms::operator|=(const code &code)
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&
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{
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set(code);
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}
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void
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ircd::m::event::conforms::del(const code &code)
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{
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report &= ~(1UL << code);
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}
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void
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ircd::m::event::conforms::set(const code &code)
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{
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report |= (1UL << code);
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}
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ircd::string_view
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ircd::m::event::conforms::string(const mutable_buffer &out)
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const
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{
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mutable_buffer buf{out};
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for(uint64_t i(0); i < num_of<code>(); ++i)
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{
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if(!has(code(i)))
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continue;
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if(begin(buf) != begin(out))
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consume(buf, copy(buf, ' '));
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consume(buf, copy(buf, m::reflect(code(i))));
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}
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return { data(out), begin(buf) };
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}
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bool
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ircd::m::event::conforms::has(const code &code)
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const
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{
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return report & (1UL << code);
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}
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bool
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ircd::m::event::conforms::has(const uint &code)
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const
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{
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return (report & (1UL << code)) == code;
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}
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bool
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ircd::m::event::conforms::operator!()
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const
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{
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return clean();
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}
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ircd::m::event::conforms::operator bool()
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const
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{
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return !clean();
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}
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bool
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ircd::m::event::conforms::clean()
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const
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{
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return report == 0;
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}
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