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modules/m_room_member: Implement can_join_room eval hook.

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This commit is contained in:
Jason Volk 2018-10-25 17:52:30 -07:00
parent 3447a1cc45
commit 1998105c96
1 changed files with 98 additions and 18 deletions
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116
modules/m_room_member.cc
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@ -16,6 +16,104 @@ IRCD_MODULE
"Matrix m.room.member"
};
static void
_can_join_room(const m::event &event,
m::vm::eval &eval)
{
const m::room room
{
at<"room_id"_>(event) //TODO: state at prev/auth whatever
};
const m::user::id &sender
{
at<"sender"_>(event)
};
// Fetch the user's membership from the room's state.
char membership_buf[32];
const string_view membership
{
room.membership(membership_buf, sender)
};
// If the user is already in the "join" state no further checks here.
if(membership == "join")
return;
// If the user is in the "ban" state here no further checks either.
if(membership == "ban")
throw m::FORBIDDEN
{
"%s is banned from room %s",
string_view{sender},
string_view{room.room_id}
};
// Fetch the join_rules from the room's state.
char join_rule_buf[32];
const string_view join_rule
{
room.join_rule(mutable_buffer(join_rule_buf))
};
// If the room is "public" no further checks here.
if(join_rule == "public")
return;
if(join_rule != "invite")
log::dwarning
{
"Unsupported join_rule '%s' for room %s. Defaulting to 'invite'.",
join_rule,
string_view{room.room_id}
};
// The room is "invite" and the user is invited; no further checks here.
if(membership == "invite")
return;
// The room is invite and the user is not in the room, either in "leave"
// state or no membership state (!membership).
if(membership && membership != "leave")
log::dwarning
{
"Unsupported membership state '%s' for %s in room %s.",
membership,
string_view{sender},
string_view{room.room_id}
};
const m::room::power power
{
room
};
// The user has power to manipulate an m.room.member state event; note
// this branch will accept a room creator joining the room right after
// creation when no power_levels, join_rules, etc exist yet.
if(power(sender, "events", "m.room.member", sender))
return;
throw m::FORBIDDEN
{
"%s cannot join room %s",
string_view{sender},
string_view{room.room_id}
};
}
const m::hookfn<m::vm::eval &>
_can_join_room_hookfn
{
{
{ "_site", "vm.eval" },
{ "type", "m.room.member" },
{ "membership", "join" },
},
_can_join_room
};
static void
affect_user_room(const m::event &event,
m::vm::eval &eval)
@ -54,24 +152,6 @@ affect_user_room_hookfn
affect_user_room
};
static void
_can_join_room(const m::event &event,
m::vm::eval &eval)
{
}
const m::hookfn<m::vm::eval &>
_can_join_room_hookfn
{
{
{ "_site", "vm.commit" },
{ "type", "m.room.member" },
{ "membership", "join" },
},
_can_join_room
};
static void
_join_room(const m::event &event,
m::vm::eval &eval)