mirror of
https://github.com/matrix-construct/construct
synced 2024-11-18 16:00:57 +01:00
103 lines
4.8 KiB
C++
103 lines
4.8 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.
|
|
|
|
#pragma once
|
|
#define HAVE_IRCD_M_ROOM_POWER_H
|
|
|
|
/// Interface to the power levels
|
|
///
|
|
/// This interface focuses specifically on making the power levels accessible
|
|
/// to developers for common query and manipulation operations. power_levels
|
|
/// is a single state event in the room containing integer thresholds for
|
|
/// privileges in the room. It also contains the list of users mapping to an
|
|
/// integer threshold. This interface hides the details of that event by
|
|
/// presenting single operations which can appear succinctly in IRCd code.
|
|
///
|
|
/// Users will typically query the operator() which will return true for allow
|
|
/// and false for deny. All other calls are slightly lower level and require
|
|
/// a bit more knowledge to safely use.
|
|
///
|
|
/// There are several modes of construction for this object, however they all
|
|
/// funnel into gathering the same information to implement the interface.
|
|
///
|
|
/// The content property of the power levels event is essential. If the user
|
|
/// does not provide this directly, or an event::idx of a power_levels event,
|
|
/// current state will be queried. If no power_levels event exists or if it
|
|
/// does not contain all of the default properties we will supplement the spec
|
|
/// defaults such that this interface always returns results (note that it is
|
|
/// still liable to throw exceptions for other reasons).
|
|
///
|
|
/// The mxid of the room creator should be supplemented for correct operation.
|
|
/// If this is not provided the interface still functions correctly but some
|
|
/// privileges reserved for room creators will not be available when querying
|
|
/// with the creator's room_id. This may be essential functionality when no
|
|
/// power_levels event exists.
|
|
///
|
|
struct ircd::m::room::power
|
|
{
|
|
using closure = std::function<void (const string_view &, const int64_t &)>;
|
|
using closure_bool = std::function<bool (const string_view &, const int64_t &)>;
|
|
|
|
static const int64_t default_creator_level;
|
|
static const int64_t default_power_level;
|
|
static const int64_t default_event_level;
|
|
static const int64_t default_user_level;
|
|
|
|
m::room room;
|
|
event::idx power_event_idx {0};
|
|
json::object power_event_content;
|
|
m::id::user room_creator_id;
|
|
|
|
bool view(const std::function<void (const json::object &)> &) const;
|
|
|
|
public:
|
|
// Iterate a collection usually either "events" or "users" as per spec.
|
|
bool for_each(const string_view &prop, const closure_bool &) const;
|
|
void for_each(const string_view &prop, const closure &) const;
|
|
|
|
// Iterates all of the integer levels, excludes the collections.
|
|
bool for_each(const closure_bool &) const;
|
|
void for_each(const closure &) const;
|
|
|
|
bool has_level(const string_view &prop) const;
|
|
bool has_collection(const string_view &prop) const;
|
|
bool has_event(const string_view &type) const;
|
|
bool has_user(const m::id::user &) const;
|
|
|
|
size_t count(const string_view &prop) const;
|
|
size_t count_collections() const;
|
|
size_t count_levels() const;
|
|
|
|
// This suite queries with full defaulting logic as per the spec. These
|
|
// always return suitable results. When determining power to change a state
|
|
// event rather than a non-state event, the state_key must always be
|
|
// defined. If the state_key is a default constructed string_view{} (which
|
|
// means !defined(state_key) and is not the same as string_view{""} for
|
|
// the common state_key="") then the interface considers your query for
|
|
// a non-state event rather than a state_event. Be careful.
|
|
int64_t level(const string_view &prop) const;
|
|
int64_t level_event(const string_view &type, const string_view &state_key) const;
|
|
int64_t level_event(const string_view &type) const;
|
|
int64_t level_user(const m::id::user &) const;
|
|
|
|
// all who attain great power and riches make use of either force or fraud"
|
|
bool operator()(const m::id::user &, const string_view &prop, const string_view &type = {}, const string_view &state_key = {}) const;
|
|
|
|
explicit power(const json::object &power_event_content, const m::id::user &room_creator_id);
|
|
explicit power(const m::event &power_event, const m::id::user &room_creator_id);
|
|
explicit power(const m::event &power_event, const m::event &create_event);
|
|
power(const m::room &, const event::idx &power_event_idx);
|
|
power(const m::room &);
|
|
power() = default;
|
|
|
|
using compose_closure = std::function<void (const string_view &, json::stack::object &)>;
|
|
static json::object compose_content(const mutable_buffer &out, const compose_closure &);
|
|
static json::object default_content(const mutable_buffer &out, const m::id::user &creator);
|
|
};
|