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construct/matrix/room_join.cc

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// Matrix Construct
//
// Copyright (C) Matrix Construct Developers, Authors & Contributors
// Copyright (C) 2016-2019 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.
ircd::m::event::id::buf
ircd::m::join(const room::alias &room_alias,
const user::id &user_id)
{
if(unlikely(!my(user_id)))
throw panic
{
"Can only join my users."
};
const room::id::buf room_id
{
m::room_id(room_alias)
};
if(room::bootstrap::required(room_id))
{
const auto &remote
{
room_alias.host()
};
m::event::id::buf ret;
m::room::bootstrap
{
ret,
room_id,
user_id,
{ &remote, 1 },
};
return ret;
}
const m::room room
{
room_id
};
return m::join(room, user_id);
}
ircd::m::event::id::buf
ircd::m::join(const m::room &room,
const m::id::user &user_id,
const vector_view<const string_view> &remotes)
{
if(unlikely(!my(user_id)))
throw panic
{
"Can only join my users."
};
// Branch for when nothing is known about the room.
if(room::bootstrap::required(room))
{
// The bootstrap condcts a blocking make_join and issues a join
// event, returning the event_id; afterward asynchronously it will
// attempt a send_join, and then process the room events.
m::event::id::buf ret;
m::room::bootstrap
{
ret,
room.room_id,
user_id,
remotes,
};
return ret;
}
if(membership(room, user_id, "join"))
{
const auto &event_idx
{
room.get(std::nothrow, "m.room.member", user_id)
};
const event::id::buf event_id
{
event_idx?
m::event_id(std::nothrow, event_idx):
event::id::buf{}
};
//TODO: check duplicate content
//if(event_id)
// return event_id;
}
json::iov event;
json::iov content;
const json::iov::push push[]
{
{ event, { "type", "m.room.member" }},
{ event, { "sender", user_id }},
{ event, { "state_key", user_id }},
{ content, { "membership", "join" }},
};
const m::user user{user_id};
const m::user::profile profile{user};
char displayname_buf[256];
const string_view displayname
{
profile.get(displayname_buf, "displayname")
};
char avatar_url_buf[256];
const string_view avatar_url
{
profile.get(avatar_url_buf, "avatar_url")
};
const json::iov::add _displayname
{
content, !empty(displayname),
{
"displayname", [&displayname]() -> json::value
{
return displayname;
}
}
};
const json::iov::add _avatar_url
{
content, !empty(avatar_url),
{
"avatar_url", [&avatar_url]() -> json::value
{
return avatar_url;
}
}
};
return commit(room, event, content);
}