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ircd:Ⓜ️:room: Add join_rule query convenience suite.

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This commit is contained in:
Jason Volk 2018-10-25 16:50:25 -07:00
parent 61016b479b
commit 39eb015565
2 changed files with 67 additions and 1 deletions
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4
include/ircd/m/room.h
View file

@ -153,10 +153,12 @@ struct ircd::m::room
void get(const string_view &type, const event::closure &) const;
bool has(const string_view &type) const;
// misc
// misc / convenience utils
bool membership(const m::id::user &, const string_view &membership = "join") const;
string_view membership(const mutable_buffer &out, const m::id::user &) const;
bool visible(const string_view &mxid, const m::event *const & = nullptr) const;
string_view join_rule(const mutable_buffer &out) const;
bool join_rule(const string_view &rule) const;
bool lonly() const;
room(const id &room_id,

64
ircd/m/room.cc
View file

@ -263,6 +263,70 @@ ircd::m::my(const room &room)
// room
//
/// Test of the join_rule of the room is the argument.
bool
ircd::m::room::join_rule(const string_view &rule)
const
{
char buf[32];
return join_rule(mutable_buffer{buf}) == rule;
}
/// Receive the join_rule of the room into buffer of sufficient size.
/// The protocol does not specify a join_rule string longer than 7
/// characters but do be considerate of the future. This function
/// properly defaults the string as per the protocol spec.
ircd::string_view
ircd::m::room::join_rule(const mutable_buffer &out)
const
{
static const string_view default_join_rule
{
"invite"
};
string_view ret
{
default_join_rule
};
const event::keys::include keys
{
"content"
};
const m::event::fetch::opts fopts
{
keys, this->fopts? this->fopts->gopts : db::gopts{}
};
const room::state state
{
*this, &fopts
};
state.get(std::nothrow, "m.room.join_rules", "", [&ret, &out]
(const m::event &event)
{
const auto &content
{
json::get<"content"_>(event)
};
const string_view &rule
{
content.get("join_rule", default_join_rule)
};
ret = string_view
{
data(out), copy(out, unquote(rule))
};
});
return ret;
}
/// The only joined members are from our origin (local only). This indicates
/// we won't have any other federation servers to query for room data, nor do
/// we need to broadcast events to the federation. This is not an authority