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construct/modules/m_room_canonical_alias.cc

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2.3 KiB
C++

// Matrix Construct
//
// Copyright (C) Matrix Construct Developers, Authors & Contributors
// Copyright (C) 2016-2018 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;
mapi::header
IRCD_MODULE
{
"Matrix m.room.canonical_alias"
};
const m::room::id::buf
alias_room_id
{
"alias", ircd::my_host()
};
const m::room
alias_room
{
alias_room_id
};
void
_changed_canonical_alias(const m::event &event,
m::vm::eval &)
{
const m::room::alias &alias
{
unquote(at<"content"_>(event).at("alias"))
};
const m::room::id &room_id
{
at<"room_id"_>(event)
};
const auto event_id
{
send(alias_room, m::me.user_id, "ircd.alias", alias, json::strung{event})
};
log::info
{
m::log, "Changed canonical alias of %s to %s by %s with %s => %s",
string_view{room_id},
string_view{alias},
json::get<"sender"_>(event),
json::get<"event_id"_>(event),
string_view{event_id}
};
}
const m::hookfn<m::vm::eval &>
_changed_canonical_alias_hookfn
{
_changed_canonical_alias,
{
{ "_site", "vm.effect" },
{ "type", "m.room.canonical_alias" },
}
};
void
_can_change_canonical_alias(const m::event &event,
m::vm::eval &eval)
{
const m::room::id &room_id
{
at<"room_id"_>(event)
};
const m::room::alias &alias
{
unquote(at<"content"_>(event).at("alias"))
};
const m::room room
{
room_id
};
bool has_alias{false};
room.get(std::nothrow, "m.room.aliases", alias.host(), [&alias, &has_alias]
(const m::event &event)
{
const json::array &aliases
{
json::get<"content"_>(event).at("aliases")
};
for(auto it(begin(aliases)); it != end(aliases) && !has_alias; ++it)
if(unquote(*it) == alias)
has_alias = true;
});
if(!has_alias)
throw m::ACCESS_DENIED
{
"Cannot set canonical alias '%s' because it is not an alias in '%s'",
string_view{alias},
string_view{room_id}
};
}
const m::hookfn<m::vm::eval &>
_can_change_canonical_alias_hookfn
{
_can_change_canonical_alias,
{
{ "_site", "vm.eval" },
{ "type", "m.room.canonical_alias" },
}
};