548 lines
18 KiB
Rust
548 lines
18 KiB
Rust
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mod edus;
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pub use edus::RoomEdus;
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use crate::{utils, Error, PduEvent, Result};
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use ruma_events::{room::power_levels::PowerLevelsEventContent, EventJson, EventType};
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use ruma_identifiers::{EventId, RoomId, UserId};
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use serde_json::json;
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use std::{
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collections::HashMap,
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convert::{TryFrom, TryInto},
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mem,
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};
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pub struct Rooms {
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pub edus: edus::RoomEdus,
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pub(super) pduid_pdu: sled::Tree, // PduId = RoomId + Count
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pub(super) eventid_pduid: sled::Tree,
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pub(super) roomid_pduleaves: sled::Tree,
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pub(super) roomstateid_pdu: sled::Tree, // Room + StateType + StateKey
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pub(super) userroomid_joined: sled::Tree,
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pub(super) roomuserid_joined: sled::Tree,
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pub(super) userroomid_invited: sled::Tree,
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pub(super) roomuserid_invited: sled::Tree,
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pub(super) userroomid_left: sled::Tree,
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}
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impl Rooms {
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/// Checks if a room exists.
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pub fn exists(&self, room_id: &RoomId) -> Result<bool> {
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// Look for PDUs in that room.
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let mut prefix = room_id.to_string().as_bytes().to_vec();
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prefix.push(0xff);
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Ok(self
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.pduid_pdu
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.get_gt(&prefix)?
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.filter(|(k, _)| k.starts_with(&prefix))
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.is_some())
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}
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// TODO: Remove and replace with public room dir
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/// Returns a vector over all rooms.
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pub fn all_rooms(&self) -> Vec<RoomId> {
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let mut room_ids = self
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.roomid_pduleaves
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.iter()
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.keys()
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.map(|key| {
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RoomId::try_from(
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&*utils::string_from_bytes(
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&key.unwrap()
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.iter()
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.copied()
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.take_while(|&x| x != 0xff) // until delimiter
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.collect::<Vec<_>>(),
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)
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.unwrap(),
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)
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.unwrap()
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})
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.collect::<Vec<_>>();
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room_ids.dedup();
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room_ids
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}
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/// Returns the full room state.
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pub fn room_state(&self, room_id: &RoomId) -> Result<HashMap<(EventType, String), PduEvent>> {
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let mut hashmap = HashMap::new();
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for pdu in self
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.roomstateid_pdu
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.scan_prefix(&room_id.to_string().as_bytes())
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.values()
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.map(|value| Ok::<_, Error>(serde_json::from_slice::<PduEvent>(&value?)?))
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{
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let pdu = pdu?;
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hashmap.insert(
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(
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pdu.kind.clone(),
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pdu.state_key
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.clone()
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.expect("state events have a state key"),
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),
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pdu,
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);
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}
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Ok(hashmap)
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}
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/// Returns the `count` of this pdu's id.
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pub fn get_pdu_count(&self, event_id: &EventId) -> Result<Option<u64>> {
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Ok(self
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.eventid_pduid
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.get(event_id.to_string().as_bytes())?
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.map(|pdu_id| {
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utils::u64_from_bytes(&pdu_id[pdu_id.len() - mem::size_of::<u64>()..pdu_id.len()])
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}))
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}
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/// Returns the json of a pdu.
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pub fn get_pdu_json(&self, event_id: &EventId) -> Result<Option<serde_json::Value>> {
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self.eventid_pduid
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.get(event_id.to_string().as_bytes())?
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.map_or(Ok(None), |pdu_id| {
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Ok(serde_json::from_slice(
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&self.pduid_pdu.get(pdu_id)?.ok_or(Error::BadDatabase(
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"eventid_pduid points to nonexistent pdu",
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))?,
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)?)
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.map(Some)
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})
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}
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/// Returns the leaf pdus of a room.
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pub fn get_pdu_leaves(&self, room_id: &RoomId) -> Result<Vec<EventId>> {
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let mut prefix = room_id.to_string().as_bytes().to_vec();
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prefix.push(0xff);
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let mut events = Vec::new();
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for event in self
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.roomid_pduleaves
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.scan_prefix(prefix)
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.values()
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.map(|bytes| Ok::<_, Error>(EventId::try_from(&*utils::string_from_bytes(&bytes?)?)?))
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{
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events.push(event?);
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}
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Ok(events)
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}
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/// Replace the leaves of a room with a new event.
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pub fn replace_pdu_leaves(&self, room_id: &RoomId, event_id: &EventId) -> Result<()> {
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let mut prefix = room_id.to_string().as_bytes().to_vec();
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prefix.push(0xff);
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for key in self.roomid_pduleaves.scan_prefix(&prefix).keys() {
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self.roomid_pduleaves.remove(key?)?;
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}
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prefix.extend_from_slice(event_id.to_string().as_bytes());
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self.roomid_pduleaves
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.insert(&prefix, &*event_id.to_string())?;
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Ok(())
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}
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/// Creates a new persisted data unit and adds it to a room.
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pub fn append_pdu(
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&self,
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room_id: RoomId,
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sender: UserId,
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event_type: EventType,
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content: serde_json::Value,
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unsigned: Option<serde_json::Map<String, serde_json::Value>>,
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state_key: Option<String>,
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globals: &super::globals::Globals,
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) -> Result<EventId> {
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// Is the event authorized?
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if state_key.is_some() {
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if let Some(pdu) = self
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.room_state(&room_id)?
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.get(&(EventType::RoomPowerLevels, "".to_owned()))
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{
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let power_levels = serde_json::from_value::<EventJson<PowerLevelsEventContent>>(
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pdu.content.clone(),
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)?
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.deserialize()?;
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match event_type {
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EventType::RoomMember => {
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// Member events are okay for now (TODO)
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}
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_ if power_levels
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.users
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.get(&sender)
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.unwrap_or(&power_levels.users_default)
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<= &0.into() =>
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{
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// Not authorized
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return Err(Error::BadRequest("event not authorized"));
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}
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// User has sufficient power
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_ => {}
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}
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}
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}
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// prev_events are the leaves of the current graph. This method removes all leaves from the
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// room and replaces them with our event
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// TODO: Make sure this isn't called twice in parallel
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let prev_events = self.get_pdu_leaves(&room_id)?;
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// Our depth is the maximum depth of prev_events + 1
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let depth = prev_events
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.iter()
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.filter_map(|event_id| Some(self.get_pdu_json(event_id).ok()??.get("depth")?.as_u64()?))
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.max()
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.unwrap_or(0_u64)
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+ 1;
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let mut unsigned = unsigned.unwrap_or_default();
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// TODO: Optimize this to not load the whole room state?
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if let Some(state_key) = &state_key {
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if let Some(prev_pdu) = self
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.room_state(&room_id)?
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.get(&(event_type.clone(), state_key.clone()))
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{
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unsigned.insert("prev_content".to_owned(), prev_pdu.content.clone());
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}
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}
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let mut pdu = PduEvent {
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event_id: EventId::try_from("$thiswillbefilledinlater").expect("we know this is valid"),
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room_id: room_id.clone(),
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sender: sender.clone(),
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origin: globals.hostname().to_owned(),
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origin_server_ts: utils::millis_since_unix_epoch()
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.try_into()
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.expect("this only fails many years in the future"),
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kind: event_type,
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content,
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state_key,
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prev_events,
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depth: depth
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.try_into()
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.expect("depth can overflow and should be deprecated..."),
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auth_events: Vec::new(),
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redacts: None,
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unsigned,
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hashes: ruma_federation_api::EventHash {
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sha256: "aaa".to_owned(),
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},
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signatures: HashMap::new(),
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};
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// Generate event id
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pdu.event_id = EventId::try_from(&*format!(
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"${}",
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ruma_signatures::reference_hash(&serde_json::to_value(&pdu)?)
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.expect("ruma can calculate reference hashes")
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))
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.expect("ruma's reference hashes are correct");
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let mut pdu_json = serde_json::to_value(&pdu)?;
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ruma_signatures::hash_and_sign_event(globals.hostname(), globals.keypair(), &mut pdu_json)
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.expect("our new event can be hashed and signed");
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self.replace_pdu_leaves(&room_id, &pdu.event_id)?;
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// Increment the last index and use that
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// This is also the next_batch/since value
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let index = globals.next_count()?;
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let mut pdu_id = room_id.to_string().as_bytes().to_vec();
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pdu_id.push(0xff);
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pdu_id.extend_from_slice(&index.to_be_bytes());
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self.pduid_pdu.insert(&pdu_id, &*pdu_json.to_string())?;
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self.eventid_pduid
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.insert(pdu.event_id.to_string(), pdu_id.clone())?;
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if let Some(state_key) = pdu.state_key {
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let mut key = room_id.to_string().as_bytes().to_vec();
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key.push(0xff);
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key.extend_from_slice(pdu.kind.to_string().as_bytes());
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key.push(0xff);
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key.extend_from_slice(state_key.to_string().as_bytes());
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self.roomstateid_pdu.insert(key, &*pdu_json.to_string())?;
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}
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self.edus.room_read_set(&room_id, &sender, index)?;
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Ok(pdu.event_id)
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}
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/// Returns an iterator over all PDUs in a room.
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pub fn all_pdus(&self, room_id: &RoomId) -> Result<impl Iterator<Item = Result<PduEvent>>> {
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self.pdus_since(room_id, 0)
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}
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/// Returns an iterator over all events in a room that happened after the event with id `since`.
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pub fn pdus_since(
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&self,
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room_id: &RoomId,
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since: u64,
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) -> Result<impl Iterator<Item = Result<PduEvent>>> {
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// Create the first part of the full pdu id
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let mut pdu_id = room_id.to_string().as_bytes().to_vec();
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pdu_id.push(0xff);
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pdu_id.extend_from_slice(&(since).to_be_bytes());
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self.pdus_since_pduid(room_id, &pdu_id)
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}
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/// Returns an iterator over all events in a room that happened after the event with id `since`.
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pub fn pdus_since_pduid(
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&self,
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room_id: &RoomId,
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pdu_id: &[u8],
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) -> Result<impl Iterator<Item = Result<PduEvent>>> {
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// Create the first part of the full pdu id
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let mut prefix = room_id.to_string().as_bytes().to_vec();
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prefix.push(0xff);
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Ok(self
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.pduid_pdu
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.range(pdu_id..)
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// Skip the first pdu if it's exactly at since, because we sent that last time
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.skip(if self.pduid_pdu.get(pdu_id)?.is_some() {
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1
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} else {
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0
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})
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.filter_map(|r| r.ok())
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.take_while(move |(k, _)| k.starts_with(&prefix))
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.map(|(_, v)| Ok(serde_json::from_slice(&v)?)))
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}
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/// Returns an iterator over all events in a room that happened before the event with id
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/// `until` in reverse-chronological order.
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pub fn pdus_until(
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&self,
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room_id: &RoomId,
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until: u64,
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) -> impl Iterator<Item = Result<PduEvent>> {
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// Create the first part of the full pdu id
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let mut prefix = room_id.to_string().as_bytes().to_vec();
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prefix.push(0xff);
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let mut current = prefix.clone();
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current.extend_from_slice(&until.to_be_bytes());
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let current: &[u8] = ¤t;
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self.pduid_pdu
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.range(..current)
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.rev()
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.filter_map(|r| r.ok())
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.take_while(move |(k, _)| k.starts_with(&prefix))
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.map(|(_, v)| Ok(serde_json::from_slice(&v)?))
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}
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/// Makes a user join a room.
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pub fn join(
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&self,
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room_id: &RoomId,
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user_id: &UserId,
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displayname: Option<String>,
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globals: &super::globals::Globals,
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) -> Result<()> {
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if !self.exists(room_id)? {
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return Err(Error::BadRequest("room does not exist"));
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}
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let mut userroom_id = user_id.to_string().as_bytes().to_vec();
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userroom_id.push(0xff);
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|
|
userroom_id.extend_from_slice(room_id.to_string().as_bytes());
|
||
|
|
|
||
|
|
let mut roomuser_id = room_id.to_string().as_bytes().to_vec();
|
||
|
|
roomuser_id.push(0xff);
|
||
|
|
roomuser_id.extend_from_slice(user_id.to_string().as_bytes());
|
||
|
|
|
||
|
|
self.userroomid_joined.insert(&userroom_id, &[])?;
|
||
|
|
self.roomuserid_joined.insert(&roomuser_id, &[])?;
|
||
|
|
self.userroomid_invited.remove(&userroom_id)?;
|
||
|
|
self.roomuserid_invited.remove(&roomuser_id)?;
|
||
|
|
self.userroomid_left.remove(&userroom_id)?;
|
||
|
|
|
||
|
|
let mut content = json!({"membership": "join"});
|
||
|
|
if let Some(displayname) = displayname {
|
||
|
|
content
|
||
|
|
.as_object_mut()
|
||
|
|
.unwrap()
|
||
|
|
.insert("displayname".to_owned(), displayname.into());
|
||
|
|
}
|
||
|
|
|
||
|
|
self.append_pdu(
|
||
|
|
room_id.clone(),
|
||
|
|
user_id.clone(),
|
||
|
|
EventType::RoomMember,
|
||
|
|
content,
|
||
|
|
None,
|
||
|
|
Some(user_id.to_string()),
|
||
|
|
globals,
|
||
|
|
)?;
|
||
|
|
|
||
|
|
Ok(())
|
||
|
|
}
|
||
|
|
|
||
|
|
/// Makes a user leave a room.
|
||
|
|
pub fn leave(
|
||
|
|
&self,
|
||
|
|
sender: &UserId,
|
||
|
|
room_id: &RoomId,
|
||
|
|
user_id: &UserId,
|
||
|
|
globals: &super::globals::Globals,
|
||
|
|
) -> Result<()> {
|
||
|
|
let mut userroom_id = user_id.to_string().as_bytes().to_vec();
|
||
|
|
userroom_id.push(0xff);
|
||
|
|
userroom_id.extend_from_slice(room_id.to_string().as_bytes());
|
||
|
|
|
||
|
|
let mut roomuser_id = room_id.to_string().as_bytes().to_vec();
|
||
|
|
roomuser_id.push(0xff);
|
||
|
|
roomuser_id.extend_from_slice(user_id.to_string().as_bytes());
|
||
|
|
|
||
|
|
self.userroomid_joined.remove(&userroom_id)?;
|
||
|
|
self.roomuserid_joined.remove(&roomuser_id)?;
|
||
|
|
self.userroomid_invited.remove(&userroom_id)?;
|
||
|
|
self.roomuserid_invited.remove(&userroom_id)?;
|
||
|
|
self.userroomid_left.insert(&userroom_id, &[])?;
|
||
|
|
|
||
|
|
self.append_pdu(
|
||
|
|
room_id.clone(),
|
||
|
|
sender.clone(),
|
||
|
|
EventType::RoomMember,
|
||
|
|
json!({"membership": "leave"}),
|
||
|
|
None,
|
||
|
|
Some(user_id.to_string()),
|
||
|
|
globals,
|
||
|
|
)?;
|
||
|
|
|
||
|
|
Ok(())
|
||
|
|
}
|
||
|
|
|
||
|
|
/// Makes a user forget a room.
|
||
|
|
pub fn forget(&self, room_id: &RoomId, user_id: &UserId) -> Result<()> {
|
||
|
|
let mut userroom_id = user_id.to_string().as_bytes().to_vec();
|
||
|
|
userroom_id.push(0xff);
|
||
|
|
userroom_id.extend_from_slice(room_id.to_string().as_bytes());
|
||
|
|
|
||
|
|
self.userroomid_left.remove(userroom_id)?;
|
||
|
|
|
||
|
|
Ok(())
|
||
|
|
}
|
||
|
|
|
||
|
|
/// Makes a user invite another user into room.
|
||
|
|
pub fn invite(
|
||
|
|
&self,
|
||
|
|
sender: &UserId,
|
||
|
|
room_id: &RoomId,
|
||
|
|
user_id: &UserId,
|
||
|
|
globals: &super::globals::Globals,
|
||
|
|
) -> Result<()> {
|
||
|
|
let mut userroom_id = user_id.to_string().as_bytes().to_vec();
|
||
|
|
userroom_id.push(0xff);
|
||
|
|
userroom_id.extend_from_slice(room_id.to_string().as_bytes());
|
||
|
|
|
||
|
|
let mut roomuser_id = room_id.to_string().as_bytes().to_vec();
|
||
|
|
roomuser_id.push(0xff);
|
||
|
|
roomuser_id.extend_from_slice(user_id.to_string().as_bytes());
|
||
|
|
|
||
|
|
self.userroomid_invited.insert(userroom_id, &[])?;
|
||
|
|
self.roomuserid_invited.insert(roomuser_id, &[])?;
|
||
|
|
|
||
|
|
self.append_pdu(
|
||
|
|
room_id.clone(),
|
||
|
|
sender.clone(),
|
||
|
|
EventType::RoomMember,
|
||
|
|
json!({"membership": "invite"}),
|
||
|
|
None,
|
||
|
|
Some(user_id.to_string()),
|
||
|
|
globals,
|
||
|
|
)?;
|
||
|
|
|
||
|
|
Ok(())
|
||
|
|
}
|
||
|
|
|
||
|
|
/// Returns an iterator over all rooms a user joined.
|
||
|
|
pub fn room_members(&self, room_id: &RoomId) -> impl Iterator<Item = Result<UserId>> {
|
||
|
|
self.roomuserid_joined
|
||
|
|
.scan_prefix(room_id.to_string())
|
||
|
|
.values()
|
||
|
|
.map(|key| {
|
||
|
|
Ok(UserId::try_from(&*utils::string_from_bytes(
|
||
|
|
&key?
|
||
|
|
.rsplit(|&b| b == 0xff)
|
||
|
|
.next()
|
||
|
|
.ok_or(Error::BadDatabase("userroomid is invalid"))?,
|
||
|
|
)?)?)
|
||
|
|
})
|
||
|
|
}
|
||
|
|
|
||
|
|
/// Returns an iterator over all rooms a user joined.
|
||
|
|
pub fn room_members_invited(&self, room_id: &RoomId) -> impl Iterator<Item = Result<UserId>> {
|
||
|
|
self.roomuserid_invited
|
||
|
|
.scan_prefix(room_id.to_string())
|
||
|
|
.keys()
|
||
|
|
.map(|key| {
|
||
|
|
Ok(UserId::try_from(&*utils::string_from_bytes(
|
||
|
|
&key?
|
||
|
|
.rsplit(|&b| b == 0xff)
|
||
|
|
.next()
|
||
|
|
.ok_or(Error::BadDatabase("userroomid is invalid"))?,
|
||
|
|
)?)?)
|
||
|
|
})
|
||
|
|
}
|
||
|
|
|
||
|
|
/// Returns an iterator over all rooms a user joined.
|
||
|
|
pub fn rooms_joined(&self, user_id: &UserId) -> impl Iterator<Item = Result<RoomId>> {
|
||
|
|
self.userroomid_joined
|
||
|
|
.scan_prefix(user_id.to_string())
|
||
|
|
.keys()
|
||
|
|
.map(|key| {
|
||
|
|
Ok(RoomId::try_from(&*utils::string_from_bytes(
|
||
|
|
&key?
|
||
|
|
.rsplit(|&b| b == 0xff)
|
||
|
|
.next()
|
||
|
|
.ok_or(Error::BadDatabase("userroomid is invalid"))?,
|
||
|
|
)?)?)
|
||
|
|
})
|
||
|
|
}
|
||
|
|
|
||
|
|
/// Returns an iterator over all rooms a user was invited to.
|
||
|
|
pub fn rooms_invited(&self, user_id: &UserId) -> impl Iterator<Item = Result<RoomId>> {
|
||
|
|
self.userroomid_invited
|
||
|
|
.scan_prefix(&user_id.to_string())
|
||
|
|
.keys()
|
||
|
|
.map(|key| {
|
||
|
|
Ok(RoomId::try_from(&*utils::string_from_bytes(
|
||
|
|
&key?
|
||
|
|
.rsplit(|&b| b == 0xff)
|
||
|
|
.next()
|
||
|
|
.ok_or(Error::BadDatabase("userroomid is invalid"))?,
|
||
|
|
)?)?)
|
||
|
|
})
|
||
|
|
}
|
||
|
|
|
||
|
|
/// Returns an iterator over all rooms a user left.
|
||
|
|
pub fn rooms_left(&self, user_id: &UserId) -> impl Iterator<Item = Result<RoomId>> {
|
||
|
|
self.userroomid_left
|
||
|
|
.scan_prefix(&user_id.to_string())
|
||
|
|
.keys()
|
||
|
|
.map(|key| {
|
||
|
|
Ok(RoomId::try_from(&*utils::string_from_bytes(
|
||
|
|
&key?
|
||
|
|
.rsplit(|&b| b == 0xff)
|
||
|
|
.next()
|
||
|
|
.ok_or(Error::BadDatabase("userroomid is invalid"))?,
|
||
|
|
)?)?)
|
||
|
|
})
|
||
|
|
}
|
||
|
|
}
|