mirror of
https://github.com/matrix-construct/construct
synced 2024-05-19 19:33:45 +02:00
127 lines
2.4 KiB
C++
127 lines
2.4 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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static void changed_canonical_alias(const event &, vm::eval &);
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extern const room alias_room;
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extern const room::id::buf alias_room_id;
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extern hookfn<vm::eval &> changed_canonical_alias_hookfn;
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}
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ircd::mapi::header
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IRCD_MODULE
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{
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"Matrix m.room.canonical_alias"
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};
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decltype(ircd::m::alias_room_id)
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ircd::m::alias_room_id
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{
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"alias", ircd::my_host()
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};
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decltype(ircd::m::alias_room)
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ircd::m::alias_room
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{
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alias_room_id
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};
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decltype(ircd::m::changed_canonical_alias_hookfn)
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ircd::m::changed_canonical_alias_hookfn
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{
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changed_canonical_alias,
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{
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{ "_site", "vm.effect" },
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{ "type", "m.room.canonical_alias" },
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}
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};
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void
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ircd::m::changed_canonical_alias(const event &event,
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vm::eval &)
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{
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const room::id &room_id
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{
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at<"room_id"_>(event)
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};
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const m::room room
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{
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room_id, event.event_id
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};
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const json::object &content
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{
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at<"content"_>(event)
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};
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const json::string &content_alias
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{
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content.get("alias")
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};
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const room::alias &alias
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{
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!empty(content_alias)?
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m::room::alias{content_alias}:
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m::room::alias{}
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};
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if(alias)
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{
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if(m::room::aliases::cache::has(alias))
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return;
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m::room::aliases::cache::set(alias, room_id);
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log::info
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{
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m::log, "Canonical alias %s for %s added by %s",
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string_view{alias},
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string_view{room_id},
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json::get<"sender"_>(event),
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};
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return;
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}
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const auto present_event_idx
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{
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room.get(std::nothrow, "m.room.canonical_alias", "")
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};
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if(!present_event_idx)
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return;
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const auto prev_state_idx
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{
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m::room::state::prev(present_event_idx)
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};
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m::get(std::nothrow, prev_state_idx, "content", [&room_id, &event]
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(const json::object &content)
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{
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const json::string &alias
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{
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content["alias"]
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};
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m::room::aliases::cache::del(alias);
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log::info
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{
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m::log, "Canonical alias of %s removed by %s was %s",
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string_view{room_id},
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json::get<"sender"_>(event),
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string_view{alias},
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};
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});
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}
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