mirror of
https://github.com/matrix-construct/construct
synced 2024-06-09 13:38:55 +02:00
119 lines
3 KiB
JavaScript
119 lines
3 KiB
JavaScript
/*
|
|
// 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.
|
|
*/
|
|
|
|
'use strict';
|
|
|
|
/**************************************
|
|
* Power levels interface
|
|
*
|
|
* This is a category of functions that query the room's state
|
|
* apropos room access control.
|
|
*/
|
|
room.power = {};
|
|
|
|
/**
|
|
* Query the room state for the power levels (and the room state
|
|
* provides the proper default content so this is always well defined).
|
|
*/
|
|
room.power.levels = function()
|
|
{
|
|
return this.content['m.room.power_levels'][''];
|
|
};
|
|
|
|
/**
|
|
* Get the power level required to issue an event of `type`
|
|
* or the state_default for [anything we explicitly consider stat
|
|
* because we can't see if a type has a state_key] or events_default
|
|
* for any other type not specified.
|
|
*
|
|
* Also accepts the arbitrary transition labels for invite, kick, ban,
|
|
* redact.
|
|
*/
|
|
room.power.event = function(type)
|
|
{
|
|
let levels = this.power.levels();
|
|
switch(type)
|
|
{
|
|
case "invite": return levels.invite;
|
|
case "redact": return levels.redact;
|
|
case "kick": return levels.kick;
|
|
case "ban": return levels.ban;
|
|
default: break;
|
|
}
|
|
|
|
if(maybe(() => levels.events[type]) !== undefined)
|
|
return levels.events[type];
|
|
|
|
if((type in this.state))
|
|
return levels.state_default;
|
|
|
|
return levels.events_default;
|
|
};
|
|
|
|
/**
|
|
* Get the power level of an mxid or the users_default if they
|
|
* have no specified power level.
|
|
*/
|
|
room.power.user = function(mxid)
|
|
{
|
|
let levels = this.power.levels();
|
|
let power = maybe(() => levels.users[mxid]);
|
|
return power !== undefined? power : levels.users_default;
|
|
};
|
|
|
|
/**
|
|
* Decisional boolean for whether a user has power to issue an event
|
|
* of `type` (or `type` can be a specified arbitrary transition label)
|
|
*/
|
|
room.power.has = function(mxid, type)
|
|
{
|
|
return this.power.user(mxid) >= this.power.event(type);
|
|
};
|
|
|
|
/**
|
|
* Determines the power level (this is vanity) for an 'operator' which
|
|
* is someone who can issue at least one type of state event.
|
|
*/
|
|
room.power.op = function()
|
|
{
|
|
let levels = this.power.levels();
|
|
let ret = levels.state_default;
|
|
Object.each(levels.events, (type, level) =>
|
|
{
|
|
if((type in this.state))
|
|
if(level < ret)
|
|
ret = level;
|
|
});
|
|
|
|
return ret;
|
|
};
|
|
|
|
/**
|
|
* Determines the power level (this is vanity) for 'voice' which
|
|
* is someone who can issue any event -- so someone without voice
|
|
* is read-only to the timeline except for their own membership event.
|
|
*
|
|
* Voice is not specific to m.room.message... should it be?
|
|
*/
|
|
room.power.voice = function()
|
|
{
|
|
let levels = this.power.levels();
|
|
let ret = levels.events_default;
|
|
Object.each(levels.events, (type, level) =>
|
|
{
|
|
if(level < ret)
|
|
ret = level;
|
|
});
|
|
|
|
return ret;
|
|
};
|