mirror of
https://github.com/matrix-construct/construct
synced 2024-10-31 19:08:59 +01:00
302 lines
7.3 KiB
C++
302 lines
7.3 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.
|
|
|
|
namespace ircd::m
|
|
{
|
|
static void auth_room_power_levels(const event &, room::auth::hookdata &);
|
|
extern hookfn<room::auth::hookdata &> auth_room_power_levels_hookfn;
|
|
|
|
static void changed_room_power_levels(const event &, vm::eval &);
|
|
extern m::hookfn<m::vm::eval &> changed_room_power_levels_hookfn;
|
|
}
|
|
|
|
ircd::mapi::header
|
|
IRCD_MODULE
|
|
{
|
|
"Matrix m.room.power_levels"
|
|
};
|
|
|
|
decltype(ircd::m::changed_room_power_levels_hookfn)
|
|
ircd::m::changed_room_power_levels_hookfn
|
|
{
|
|
changed_room_power_levels,
|
|
{
|
|
{ "_site", "vm.notify" },
|
|
{ "type", "m.room.power_levels" },
|
|
}
|
|
};
|
|
|
|
void
|
|
ircd::m::changed_room_power_levels(const m::event &event,
|
|
m::vm::eval &)
|
|
{
|
|
if(myself(json::get<"sender"_>(event)))
|
|
return;
|
|
|
|
log::info
|
|
{
|
|
m::log, "%s changed power_levels in %s [%s]",
|
|
json::get<"sender"_>(event),
|
|
json::get<"room_id"_>(event),
|
|
string_view{event.event_id}
|
|
};
|
|
}
|
|
|
|
decltype(ircd::m::auth_room_power_levels_hookfn)
|
|
ircd::m::auth_room_power_levels_hookfn
|
|
{
|
|
auth_room_power_levels,
|
|
{
|
|
{ "_site", "room.auth" },
|
|
{ "type", "m.room.power_levels" },
|
|
}
|
|
};
|
|
|
|
void
|
|
ircd::m::auth_room_power_levels(const m::event &event,
|
|
room::auth::hookdata &data)
|
|
{
|
|
using FAIL = room::auth::FAIL;
|
|
|
|
// 10. If type is m.room.power_levels:
|
|
assert(json::get<"type"_>(event) == "m.room.power_levels");
|
|
|
|
// a. If users key in content is not a dictionary with keys that are
|
|
// valid user IDs with values that are integers (or a string that is
|
|
// an integer), reject.
|
|
if(json::type(json::get<"content"_>(event).get("users")) != json::OBJECT)
|
|
throw FAIL
|
|
{
|
|
"m.room.power_levels content.users is not a json object."
|
|
};
|
|
|
|
for(const auto &[user_id, value] : json::object(at<"content"_>(event).at("users")))
|
|
{
|
|
if(!m::valid(m::id::USER, user_id))
|
|
{
|
|
log::dwarning
|
|
{
|
|
m::log, "Power levels in %s 'users' invalid entry '%s'; not user mxid.",
|
|
string_view{event.event_id},
|
|
user_id,
|
|
};
|
|
|
|
continue;
|
|
}
|
|
|
|
if(!lex_castable<int64_t>(unquote(value)))
|
|
throw FAIL
|
|
{
|
|
"m.room.power_levels content.users value is not an integer."
|
|
};
|
|
}
|
|
|
|
// // b. If there is no previous m.room.power_levels event in the room, allow.
|
|
// if(!data.auth_power)
|
|
// {
|
|
// data.allow = true;
|
|
// return;
|
|
// };
|
|
|
|
// b'. If there is no previous m.room.power_levels event in the room,
|
|
// allow if the sender is the room creator.
|
|
if(!data.auth_power && data.auth_create && data.auth_member_sender)
|
|
{
|
|
const json::string &creator
|
|
{
|
|
json::get<"content"_>(*data.auth_create).get("creator")
|
|
};
|
|
|
|
if(creator == json::get<"state_key"_>(*data.auth_member_sender))
|
|
{
|
|
data.allow = true;
|
|
return;
|
|
}
|
|
}
|
|
|
|
if(!data.auth_power)
|
|
throw FAIL
|
|
{
|
|
"Cannot create the m.room.power_levels event."
|
|
};
|
|
|
|
if(!data.auth_create)
|
|
throw FAIL
|
|
{
|
|
"Missing m.room.create in auth_events."
|
|
};
|
|
|
|
const m::room::power old_power
|
|
{
|
|
*data.auth_power, *data.auth_create
|
|
};
|
|
|
|
const m::room::power new_power
|
|
{
|
|
event, *data.auth_create
|
|
};
|
|
|
|
const int64_t current_level
|
|
{
|
|
old_power.level_user(at<"sender"_>(event))
|
|
};
|
|
|
|
// c. For each of the keys users_default, events_default,
|
|
// state_default, ban, redact, kick, invite, as well as each entry
|
|
// being changed under the events or users keys:
|
|
static const string_view keys[]
|
|
{
|
|
"users_default",
|
|
"events_default",
|
|
"state_default",
|
|
"ban",
|
|
"redact",
|
|
"kick",
|
|
"invite",
|
|
};
|
|
|
|
for(const auto &key : keys)
|
|
{
|
|
const int64_t old_level(old_power.level(key));
|
|
const int64_t new_level(new_power.level(key));
|
|
if(old_level == new_level)
|
|
continue;
|
|
|
|
// i. If the current value is higher than the sender's current
|
|
// power level, reject.
|
|
if(old_level > current_level)
|
|
throw FAIL
|
|
{
|
|
"m.room.power_levels property denied to sender's power level."
|
|
};
|
|
|
|
// ii. If the new value is higher than the sender's current power
|
|
// level, reject.
|
|
if(new_level > current_level)
|
|
throw FAIL
|
|
{
|
|
"m.room.power_levels property exceeds sender's power level."
|
|
};
|
|
}
|
|
|
|
old_power.for_each("users", [&new_power, ¤t_level]
|
|
(const string_view &user_id, const int64_t &old_level)
|
|
{
|
|
if(new_power.has_user(user_id))
|
|
if(new_power.level_user(user_id) == old_level)
|
|
return true;
|
|
|
|
// i. If the current value is higher than the sender's current
|
|
// power level, reject.
|
|
if(old_level > current_level)
|
|
throw FAIL
|
|
{
|
|
"m.room.power_levels user property denied to sender's power level."
|
|
};
|
|
|
|
// ii. If the new value is higher than the sender's current power
|
|
// level, reject.
|
|
if(new_power.level_user(user_id) > current_level)
|
|
throw FAIL
|
|
{
|
|
"m.room.power_levels user property exceeds sender's power level."
|
|
};
|
|
|
|
return true;
|
|
});
|
|
|
|
new_power.for_each("users", [&old_power, ¤t_level]
|
|
(const string_view &user_id, const int64_t &new_level)
|
|
{
|
|
if(old_power.has_user(user_id))
|
|
if(old_power.level_user(user_id) == new_level)
|
|
return true;
|
|
|
|
// i. If the current value is higher than the sender's current
|
|
// power level, reject.
|
|
if(new_level > current_level)
|
|
throw FAIL
|
|
{
|
|
"m.room.power_levels user property exceeds sender's power level."
|
|
};
|
|
|
|
return true;
|
|
});
|
|
|
|
old_power.for_each("events", [&new_power, ¤t_level]
|
|
(const string_view &type, const int64_t &old_level)
|
|
{
|
|
if(new_power.has_event(type))
|
|
if(new_power.level_event(type) == old_level)
|
|
return true;
|
|
|
|
// i. If the current value is higher than the sender's current
|
|
// power level, reject.
|
|
if(old_level > current_level)
|
|
throw FAIL
|
|
{
|
|
"m.room.power_levels event property denied to sender's power level."
|
|
};
|
|
|
|
// ii. If the new value is higher than the sender's current power
|
|
// level, reject.
|
|
if(new_power.level_event(type) > current_level)
|
|
throw FAIL
|
|
{
|
|
"m.room.power_levels event property exceeds sender's power level."
|
|
};
|
|
|
|
return true;
|
|
});
|
|
|
|
new_power.for_each("events", [&old_power, ¤t_level]
|
|
(const string_view &type, const int64_t &new_level)
|
|
{
|
|
if(old_power.has_event(type))
|
|
if(old_power.level_event(type) == new_level)
|
|
return true;
|
|
|
|
// i. If the current value is higher than the sender's current
|
|
// power level, reject.
|
|
if(new_level > current_level)
|
|
throw FAIL
|
|
{
|
|
"m.room.power_levels event property exceeds sender's power level."
|
|
};
|
|
|
|
return true;
|
|
});
|
|
|
|
// d. For each entry being changed under the users key...
|
|
old_power.for_each("users", [&event, &new_power, ¤t_level]
|
|
(const string_view &user_id, const int64_t &old_level)
|
|
{
|
|
// ...other than the sender's own entry:
|
|
if(user_id == at<"sender"_>(event))
|
|
return true;
|
|
|
|
if(new_power.has_user(user_id))
|
|
if(new_power.level_user(user_id) == old_level)
|
|
return true;
|
|
|
|
// i. If the current value is equal to the sender's current power
|
|
// level, reject.
|
|
if(old_level == current_level)
|
|
throw FAIL
|
|
{
|
|
"m.room.power_levels user property denied to sender's power level."
|
|
};
|
|
|
|
return true;
|
|
});
|
|
|
|
// e. Otherwise, allow.
|
|
data.allow = true;
|
|
}
|