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improvement: handle restricted joins locally

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This commit is contained in:
Timo Kösters 2022-12-18 09:44:46 +01:00
parent d7eaa9c5cc
commit 2a04c213f9
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2 changed files with 97 additions and 29 deletions
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124
src/api/client_server/membership.rs
View file

@ -13,8 +13,9 @@ use ruma::{
canonical_json::to_canonical_value, canonical_json::to_canonical_value,
events::{ events::{
room::{ room::{
join_rules::{JoinRule, RoomJoinRulesEventContent}, join_rules::{AllowRule, JoinRule, RoomJoinRulesEventContent},
member::{MembershipState, RoomMemberEventContent}, member::{MembershipState, RoomMemberEventContent},
power_levels::RoomPowerLevelsEventContent,
}, },
RoomEventType, StateEventType, RoomEventType, StateEventType,
}, },
@ -751,6 +752,96 @@ async fn join_room_by_id_helper(
.state .state
.set_room_state(room_id, statehash_after_join, &state_lock)?; .set_room_state(room_id, statehash_after_join, &state_lock)?;
} else { } else {
let join_rules_event = services().rooms.state_accessor.room_state_get(
&room_id,
&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()
.map(|join_rules_event| {
serde_json::from_str(join_rules_event.content.get()).map_err(|e| {
warn!("Invalid join rules event: {}", e);
Error::bad_database("Invalid join rules event in db.")
})
})
.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 {
join_rule: JoinRule::Restricted(restricted),
})
| Some(RoomJoinRulesEventContent {
join_rule: JoinRule::KnockRestricted(restricted),
}) => restricted
.allow
.into_iter()
.filter_map(|a| match a {
AllowRule::RoomMembership(r) => Some(r.room_id),
_ => None,
})
.collect(),
_ => 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()?
{
return None;
}
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())
.filter(|uid| uid.server_name() == services().globals.server_name())
.next()
});
Some(authorized_user)
})
.flatten();
let event = RoomMemberEventContent { let event = RoomMemberEventContent {
membership: MembershipState::Join, membership: MembershipState::Join,
displayname: services().users.displayname(sender_user)?, displayname: services().users.displayname(sender_user)?,
@ -759,7 +850,7 @@ async fn join_room_by_id_helper(
third_party_invite: None, third_party_invite: None,
blurhash: services().users.blurhash(sender_user)?, blurhash: services().users.blurhash(sender_user)?,
reason: None, reason: None,
join_authorized_via_users_server: None, join_authorized_via_users_server: authorized_user,
}; };
// Try normal join first // Try normal join first
@ -779,32 +870,9 @@ async fn join_room_by_id_helper(
Err(e) => e, Err(e) => e,
}; };
// TODO: Conduit does not implement restricted join rules yet, we always ask over if !restriction_rooms.is_empty() {
// federation // We couldn't do the join locally, maybe federation can help to satisfy the restricted
let join_rules_event = services().rooms.state_accessor.room_state_get( // join requirements
&room_id,
&StateEventType::RoomJoinRules,
"",
)?;
let join_rules_event_content: Option<RoomJoinRulesEventContent> = join_rules_event
.as_ref()
.map(|join_rules_event| {
serde_json::from_str(join_rules_event.content.get()).map_err(|e| {
warn!("Invalid join rules event: {}", e);
Error::bad_database("Invalid join rules event in db.")
})
})
.transpose()?;
if matches!(
join_rules_event_content,
Some(RoomJoinRulesEventContent {
join_rule: JoinRule::Restricted { .. }
}) | Some(RoomJoinRulesEventContent {
join_rule: JoinRule::KnockRestricted { .. }
})
) {
let (make_join_response, remote_server) = let (make_join_response, remote_server) =
make_join_request(sender_user, room_id, servers).await?; make_join_request(sender_user, room_id, servers).await?;

2
src/service/globals/mod.rs
View file

@ -168,7 +168,7 @@ impl Service {
.supported_room_versions() .supported_room_versions()
.contains(&s.config.default_room_version) .contains(&s.config.default_room_version)
{ {
error!("Room version in config isn't supported, falling back to default version"); error!(config=?s.config.default_room_version, fallback=?crate::config::default_default_room_version(), "Room version in config isn't supported, falling back to default version");
s.config.default_room_version = crate::config::default_default_room_version(); s.config.default_room_version = crate::config::default_default_room_version();
}; };