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Merge branch 'authorized-user-search' into 'next'

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fix(membership): perform stricter checks when choosing an authorized user

See merge request famedly/conduit!620
This commit is contained in:
Timo Kösters 2024-04-24 21:00:52 +00:00
commit a140bf8a6f
1 changed files with 30 additions and 57 deletions
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87
src/api/client_server/membership.rs
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@ -15,7 +15,6 @@ use ruma::{
room::{
join_rules::{AllowRule, JoinRule, RoomJoinRulesEventContent},
member::{MembershipState, RoomMemberEventContent},
power_levels::RoomPowerLevelsEventContent,
},
StateEventType, TimelineEventType,
},
@ -858,11 +857,6 @@ async fn join_room_by_id_helper(
&StateEventType::RoomJoinRules,
"",
)?;
let power_levels_event = services().rooms.state_accessor.room_state_get(
room_id,
&StateEventType::RoomPowerLevels,
"",
)?;
let join_rules_event_content: Option<RoomJoinRulesEventContent> = join_rules_event
.as_ref()
@ -873,15 +867,6 @@ async fn join_room_by_id_helper(
})
})
.transpose()?;
let power_levels_event_content: Option<RoomPowerLevelsEventContent> = power_levels_event
.as_ref()
.map(|power_levels_event| {
serde_json::from_str(power_levels_event.content.get()).map_err(|e| {
warn!("Invalid power levels event: {}", e);
Error::bad_database("Invalid power levels event in db.")
})
})
.transpose()?;
let restriction_rooms = match join_rules_event_content {
Some(RoomJoinRulesEventContent {
@ -900,47 +885,37 @@ async fn join_room_by_id_helper(
_ => Vec::new(),
};
let authorized_user = restriction_rooms
.iter()
.find_map(|restriction_room_id| {
if !services()
.rooms
.state_cache
.is_joined(sender_user, restriction_room_id)
.ok()?
let authorized_user = if restriction_rooms.iter().any(|restriction_room_id| {
services()
.rooms
.state_cache
.is_joined(sender_user, restriction_room_id)
.unwrap_or(false)
}) {
let mut auth_user = None;
for user in services()
.rooms
.state_cache
.room_members(room_id)
.filter_map(Result::ok)
.collect::<Vec<_>>()
{
if user.server_name() == services().globals.server_name()
&& services()
.rooms
.state_accessor
.user_can_invite(room_id, &user, sender_user, &state_lock)
.await
.unwrap_or(false)
{
return None;
auth_user = Some(user);
break;
}
let authorized_user = power_levels_event_content
.as_ref()
.and_then(|c| {
c.users
.iter()
.filter(|(uid, i)| {
uid.server_name() == services().globals.server_name()
&& **i > ruma::int!(0)
&& services()
.rooms
.state_cache
.is_joined(uid, restriction_room_id)
.unwrap_or(false)
})
.max_by_key(|(_, i)| *i)
.map(|(u, _)| u.to_owned())
})
.or_else(|| {
// TODO: Check here if user is actually allowed to invite. Currently the auth
// check will just fail in this case.
services()
.rooms
.state_cache
.room_members(restriction_room_id)
.filter_map(|r| r.ok())
.find(|uid| uid.server_name() == services().globals.server_name())
});
Some(authorized_user)
})
.flatten();
}
auth_user
} else {
None
};
let event = RoomMemberEventContent {
membership: MembershipState::Join,
@ -978,9 +953,7 @@ async fn join_room_by_id_helper(
if !restriction_rooms.is_empty()
&& servers
.iter()
.filter(|s| *s != services().globals.server_name())
.count()
> 0
.any(|s| *s != services().globals.server_name())
{
info!(
"We couldn't do the join locally, maybe federation can help to satisfy the restricted join requirements"