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8bfaf09f37
conduit/src/database/rooms.rs
Jonas Platte 2e1d7d12ca
Refactor usage of CanonicalJsonValue
2021-04-26 19:03:51 +02:00

2413 lines
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mod edus;
pub use edus::RoomEdus;
use member::MembershipState;
use crate::{pdu::PduBuilder, utils, Database, Error, PduEvent, Result};
use log::{debug, error, warn};
use regex::Regex;
use ring::digest;
use ruma::{
api::{client::error::ErrorKind, federation},
events::{
ignored_user_list, push_rules,
room::{create::CreateEventContent, member, message},
AnyStrippedStateEvent, AnySyncStateEvent, EventType,
},
push::{self, Action, Tweak},
serde::{CanonicalJsonObject, CanonicalJsonValue, Raw},
uint, EventId, RoomAliasId, RoomId, RoomVersionId, ServerName, UserId,
};
use sled::IVec;
use state_res::{Event, StateMap};
use std::{
collections::{BTreeMap, HashMap, HashSet},
convert::{TryFrom, TryInto},
mem,
sync::Arc,
};
use super::{admin::AdminCommand, pusher};
/// The unique identifier of each state group.
///
/// This is created when a state group is added to the database by
/// hashing the entire state.
pub type StateHashId = IVec;
#[derive(Clone)]
pub struct Rooms {
pub edus: edus::RoomEdus,
pub(super) pduid_pdu: sled::Tree, // PduId = RoomId + Count
pub(super) eventid_pduid: sled::Tree,
pub(super) roomid_pduleaves: sled::Tree,
pub(super) alias_roomid: sled::Tree,
pub(super) aliasid_alias: sled::Tree, // AliasId = RoomId + Count
pub(super) publicroomids: sled::Tree,
pub(super) tokenids: sled::Tree, // TokenId = RoomId + Token + PduId
/// Participating servers in a room.
pub(super) roomserverids: sled::Tree, // RoomServerId = RoomId + ServerName
pub(super) userroomid_joined: sled::Tree,
pub(super) roomuserid_joined: sled::Tree,
pub(super) roomuseroncejoinedids: sled::Tree,
pub(super) userroomid_invitestate: sled::Tree, // InviteState = Vec<Raw<Pdu>>
pub(super) roomuserid_invitecount: sled::Tree, // InviteCount = Count
pub(super) userroomid_leftstate: sled::Tree,
pub(super) roomuserid_leftcount: sled::Tree,
pub(super) userroomid_notificationcount: sled::Tree, // NotifyCount = u64
pub(super) userroomid_highlightcount: sled::Tree, // HightlightCount = u64
/// Remember the current state hash of a room.
pub(super) roomid_shortstatehash: sled::Tree,
/// Remember the state hash at events in the past.
pub(super) shorteventid_shortstatehash: sled::Tree,
/// StateKey = EventType + StateKey, ShortStateKey = Count
pub(super) statekey_shortstatekey: sled::Tree,
pub(super) shorteventid_eventid: sled::Tree,
/// ShortEventId = Count
pub(super) eventid_shorteventid: sled::Tree,
/// ShortEventId = Count
pub(super) statehash_shortstatehash: sled::Tree,
/// ShortStateHash = Count
/// StateId = ShortStateHash + ShortStateKey
pub(super) stateid_shorteventid: sled::Tree,
/// RoomId + EventId -> outlier PDU.
/// Any pdu that has passed the steps 1-8 in the incoming event /federation/send/txn.
pub(super) eventid_outlierpdu: sled::Tree,
/// RoomId + EventId -> Parent PDU EventId.
pub(super) prevevent_parent: sled::Tree,
}
impl Rooms {
/// Builds a StateMap by iterating over all keys that start
/// with state_hash, this gives the full state for the given state_hash.
pub fn state_full_ids(&self, shortstatehash: u64) -> Result<Vec<EventId>> {
Ok(self
.stateid_shorteventid
.scan_prefix(&shortstatehash.to_be_bytes())
.values()
.filter_map(|r| r.ok())
.map(|bytes| self.shorteventid_eventid.get(&bytes).ok().flatten())
.flatten()
.map(|bytes| {
Ok::<_, Error>(
EventId::try_from(utils::string_from_bytes(&bytes).map_err(|_| {
Error::bad_database("EventID in stateid_shorteventid is invalid unicode.")
})?)
.map_err(|_| {
Error::bad_database("EventId in stateid_shorteventid is invalid.")
})?,
)
})
.filter_map(|r| r.ok())
.collect())
}
pub fn state_full(
&self,
shortstatehash: u64,
) -> Result<BTreeMap<(EventType, String), PduEvent>> {
Ok(self
.stateid_shorteventid
.scan_prefix(shortstatehash.to_be_bytes())
.values()
.filter_map(|r| r.ok())
.map(|bytes| self.shorteventid_eventid.get(&bytes).ok().flatten())
.flatten()
.map(|bytes| {
Ok::<_, Error>(
EventId::try_from(utils::string_from_bytes(&bytes).map_err(|_| {
Error::bad_database("EventID in stateid_shorteventid is invalid unicode.")
})?)
.map_err(|_| {
Error::bad_database("EventId in stateid_shorteventid is invalid.")
})?,
)
})
.filter_map(|r| r.ok())
.map(|eventid| self.get_pdu(&eventid))
.filter_map(|r| r.ok().flatten())
.map(|pdu| {
Ok::<_, Error>((
(
pdu.kind.clone(),
pdu.state_key
.as_ref()
.ok_or_else(|| Error::bad_database("State event has no state key."))?
.clone(),
),
pdu,
))
})
.filter_map(|r| r.ok())
.collect())
}
/// Returns a single PDU from `room_id` with key (`event_type`, `state_key`).
#[tracing::instrument(skip(self))]
pub fn state_get_id(
&self,
shortstatehash: u64,
event_type: &EventType,
state_key: &str,
) -> Result<Option<EventId>> {
let mut key = event_type.as_ref().as_bytes().to_vec();
key.push(0xff);
key.extend_from_slice(&state_key.as_bytes());
let shortstatekey = self.statekey_shortstatekey.get(&key)?;
if let Some(shortstatekey) = shortstatekey {
let mut stateid = shortstatehash.to_be_bytes().to_vec();
stateid.extend_from_slice(&shortstatekey);
Ok(self
.stateid_shorteventid
.get(&stateid)?
.map(|bytes| self.shorteventid_eventid.get(&bytes).ok().flatten())
.flatten()
.map(|bytes| {
Ok::<_, Error>(
EventId::try_from(utils::string_from_bytes(&bytes).map_err(|_| {
Error::bad_database(
"EventID in stateid_shorteventid is invalid unicode.",
)
})?)
.map_err(|_| {
Error::bad_database("EventId in stateid_shorteventid is invalid.")
})?,
)
})
.map(|r| r.ok())
.flatten())
} else {
Ok(None)
}
}
/// Returns a single PDU from `room_id` with key (`event_type`, `state_key`).
#[tracing::instrument(skip(self))]
pub fn state_get(
&self,
shortstatehash: u64,
event_type: &EventType,
state_key: &str,
) -> Result<Option<PduEvent>> {
self.state_get_id(shortstatehash, event_type, state_key)?
.map_or(Ok(None), |event_id| self.get_pdu(&event_id))
}
/// Returns the state hash for this pdu.
#[tracing::instrument(skip(self))]
pub fn pdu_shortstatehash(&self, event_id: &EventId) -> Result<Option<u64>> {
self.eventid_shorteventid
.get(event_id.as_bytes())?
.map_or(Ok(None), |shorteventid| {
Ok(self.shorteventid_shortstatehash.get(shorteventid)?.map_or(
Ok::<_, Error>(None),
|bytes| {
Ok(Some(utils::u64_from_bytes(&bytes).map_err(|_| {
Error::bad_database(
"Invalid shortstatehash bytes in shorteventid_shortstatehash",
)
})?))
},
)?)
})
}
/// Returns the last state hash key added to the db for the given room.
#[tracing::instrument(skip(self))]
pub fn current_shortstatehash(&self, room_id: &RoomId) -> Result<Option<u64>> {
self.roomid_shortstatehash
.get(room_id.as_bytes())?
.map_or(Ok(None), |bytes| {
Ok(Some(utils::u64_from_bytes(&bytes).map_err(|_| {
Error::bad_database("Invalid shortstatehash in roomid_shortstatehash")
})?))
})
}
/// This fetches auth events from the current state.
pub fn get_auth_events(
&self,
room_id: &RoomId,
kind: &EventType,
sender: &UserId,
state_key: Option<&str>,
content: &serde_json::Value,
) -> Result<StateMap<Arc<PduEvent>>> {
let auth_events = state_res::auth_types_for_event(
kind,
sender,
state_key.map(|s| s.to_string()),
content.clone(),
);
let mut events = StateMap::new();
for (event_type, state_key) in auth_events {
if let Some(pdu) = self.room_state_get(room_id, &event_type, &state_key)? {
events.insert((event_type, state_key), Arc::new(pdu));
} else {
// This is okay because when creating a new room some events were not created yet
debug!(
"{:?}: Could not find {} {:?} in state",
content, event_type, state_key
);
}
}
Ok(events)
}
/// Generate a new StateHash.
///
/// A unique hash made from hashing all PDU ids of the state joined with 0xff.
fn calculate_hash(&self, bytes_list: &[&[u8]]) -> StateHashId {
// We only hash the pdu's event ids, not the whole pdu
let bytes = bytes_list.join(&0xff);
let hash = digest::digest(&digest::SHA256, &bytes);
hash.as_ref().into()
}
/// Checks if a room exists.
pub fn exists(&self, room_id: &RoomId) -> Result<bool> {
let mut prefix = room_id.as_bytes().to_vec();
prefix.push(0xff);
// Look for PDUs in that room.
Ok(self
.pduid_pdu
.get_gt(&prefix)?
.filter(|(k, _)| k.starts_with(&prefix))
.is_some())
}
/// Force the creation of a new StateHash and insert it into the db.
///
/// Whatever `state` is supplied to `force_state` __is__ the current room state snapshot.
pub fn force_state(
&self,
room_id: &RoomId,
state: BTreeMap<(EventType, String), EventId>,
db: &Database,
) -> Result<()> {
let state_hash = self.calculate_hash(
&state
.values()
.map(|event_id| event_id.as_bytes())
.collect::<Vec<_>>(),
);
let (shortstatehash, already_existed) =
match self.statehash_shortstatehash.get(&state_hash)? {
Some(shortstatehash) => (
utils::u64_from_bytes(&shortstatehash)
.map_err(|_| Error::bad_database("Invalid shortstatehash in db."))?,
true,
),
None => {
let shortstatehash = db.globals.next_count()?;
self.statehash_shortstatehash
.insert(&state_hash, &shortstatehash.to_be_bytes())?;
(shortstatehash, false)
}
};
let new_state = if !already_existed {
let mut new_state = HashSet::new();
for ((event_type, state_key), eventid) in state {
new_state.insert(eventid.clone());
let mut statekey = event_type.as_ref().as_bytes().to_vec();
statekey.push(0xff);
statekey.extend_from_slice(&state_key.as_bytes());
let shortstatekey = match self.statekey_shortstatekey.get(&statekey)? {
Some(shortstatekey) => shortstatekey.to_vec(),
None => {
let shortstatekey = db.globals.next_count()?;
self.statekey_shortstatekey
.insert(&statekey, &shortstatekey.to_be_bytes())?;
shortstatekey.to_be_bytes().to_vec()
}
};
let shorteventid = match self.eventid_shorteventid.get(eventid.as_bytes())? {
Some(shorteventid) => shorteventid.to_vec(),
None => {
let shorteventid = db.globals.next_count()?;
self.eventid_shorteventid
.insert(eventid.as_bytes(), &shorteventid.to_be_bytes())?;
self.shorteventid_eventid
.insert(&shorteventid.to_be_bytes(), eventid.as_bytes())?;
shorteventid.to_be_bytes().to_vec()
}
};
let mut state_id = shortstatehash.to_be_bytes().to_vec();
state_id.extend_from_slice(&shortstatekey);
self.stateid_shorteventid
.insert(&state_id, &*shorteventid)?;
}
new_state
} else {
self.state_full_ids(shortstatehash)?.into_iter().collect()
};
let old_state = self
.current_shortstatehash(&room_id)?
.map(|s| self.state_full_ids(s))
.transpose()?
.map(|vec| vec.into_iter().collect::<HashSet<_>>())
.unwrap_or_default();
for event_id in new_state.difference(&old_state) {
if let Some(pdu) = self.get_pdu_json(event_id)? {
if pdu.get("event_type").and_then(|val| val.as_str()) == Some("m.room.member") {
if let Ok(pdu) = serde_json::from_value::<PduEvent>(
serde_json::to_value(&pdu).expect("CanonicalJsonObj is a valid JsonValue"),
) {
if let Some(membership) =
pdu.content.get("membership").and_then(|membership| {
serde_json::from_value::<member::MembershipState>(
membership.clone(),
)
.ok()
})
{
if let Some(state_key) = pdu
.state_key
.and_then(|state_key| UserId::try_from(state_key).ok())
{
self.update_membership(
room_id,
&state_key,
membership,
&pdu.sender,
None,
db,
)?;
}
}
}
}
}
}
self.roomid_shortstatehash
.insert(room_id.as_bytes(), &shortstatehash.to_be_bytes())?;
Ok(())
}
/// Returns the full room state.
#[tracing::instrument(skip(self))]
pub fn room_state_full(
&self,
room_id: &RoomId,
) -> Result<BTreeMap<(EventType, String), PduEvent>> {
if let Some(current_shortstatehash) = self.current_shortstatehash(room_id)? {
self.state_full(current_shortstatehash)
} else {
Ok(BTreeMap::new())
}
}
/// Returns a single PDU from `room_id` with key (`event_type`, `state_key`).
#[tracing::instrument(skip(self))]
pub fn room_state_get_id(
&self,
room_id: &RoomId,
event_type: &EventType,
state_key: &str,
) -> Result<Option<EventId>> {
if let Some(current_shortstatehash) = self.current_shortstatehash(room_id)? {
self.state_get_id(current_shortstatehash, event_type, state_key)
} else {
Ok(None)
}
}
/// Returns a single PDU from `room_id` with key (`event_type`, `state_key`).
#[tracing::instrument(skip(self))]
pub fn room_state_get(
&self,
room_id: &RoomId,
event_type: &EventType,
state_key: &str,
) -> Result<Option<PduEvent>> {
if let Some(current_shortstatehash) = self.current_shortstatehash(room_id)? {
self.state_get(current_shortstatehash, event_type, state_key)
} else {
Ok(None)
}
}
/// Returns the `count` of this pdu's id.
#[tracing::instrument(skip(self))]
pub fn pdu_count(&self, pdu_id: &[u8]) -> Result<u64> {
Ok(
utils::u64_from_bytes(&pdu_id[pdu_id.len() - mem::size_of::<u64>()..pdu_id.len()])
.map_err(|_| Error::bad_database("PDU has invalid count bytes."))?,
)
}
/// Returns the `count` of this pdu's id.
pub fn get_pdu_count(&self, event_id: &EventId) -> Result<Option<u64>> {
self.eventid_pduid
.get(event_id.as_bytes())?
.map_or(Ok(None), |pdu_id| self.pdu_count(&pdu_id).map(Some))
}
pub fn latest_pdu_count(&self, room_id: &RoomId) -> Result<u64> {
self.pduid_pdu
.scan_prefix(room_id.as_bytes())
.last()
.map(|b| self.pdu_count(&b?.0))
.transpose()
.map(|op| op.unwrap_or_default())
}
/// Returns the json of a pdu.
pub fn get_pdu_json(&self, event_id: &EventId) -> Result<Option<CanonicalJsonObject>> {
self.eventid_pduid
.get(event_id.as_bytes())?
.map_or_else::<Result<_>, _, _>(
|| Ok(self.eventid_outlierpdu.get(event_id.as_bytes())?),
|pduid| {
Ok(Some(self.pduid_pdu.get(&pduid)?.ok_or_else(|| {
Error::bad_database("Invalid pduid in eventid_pduid.")
})?))
},
)?
.map(|pdu| {
Ok(serde_json::from_slice(&pdu)
.map_err(|_| Error::bad_database("Invalid PDU in db."))?)
})
.transpose()
}
/// Returns the pdu's id.
pub fn get_pdu_id(&self, event_id: &EventId) -> Result<Option<IVec>> {
self.eventid_pduid
.get(event_id.as_bytes())?
.map_or(Ok(None), |pdu_id| Ok(Some(pdu_id)))
}
/// Returns the pdu.
///
/// Checks the `eventid_outlierpdu` Tree if not found in the timeline.
pub fn get_non_outlier_pdu(&self, event_id: &EventId) -> Result<Option<PduEvent>> {
self.eventid_pduid
.get(event_id.as_bytes())?
.map_or_else::<Result<_>, _, _>(
|| Ok(None),
|pduid| {
Ok(Some(self.pduid_pdu.get(&pduid)?.ok_or_else(|| {
Error::bad_database("Invalid pduid in eventid_pduid.")
})?))
},
)?
.map(|pdu| {
Ok(serde_json::from_slice(&pdu)
.map_err(|_| Error::bad_database("Invalid PDU in db."))?)
})
.transpose()
}
/// Returns the pdu.
///
/// Checks the `eventid_outlierpdu` Tree if not found in the timeline.
pub fn get_pdu(&self, event_id: &EventId) -> Result<Option<PduEvent>> {
self.eventid_pduid
.get(event_id.as_bytes())?
.map_or_else::<Result<_>, _, _>(
|| Ok(self.eventid_outlierpdu.get(event_id.as_bytes())?),
|pduid| {
Ok(Some(self.pduid_pdu.get(&pduid)?.ok_or_else(|| {
Error::bad_database("Invalid pduid in eventid_pduid.")
})?))
},
)?
.map(|pdu| {
Ok(serde_json::from_slice(&pdu)
.map_err(|_| Error::bad_database("Invalid PDU in db."))?)
})
.transpose()
}
/// Returns the pdu.
///
/// This does __NOT__ check the outliers `Tree`.
pub fn get_pdu_from_id(&self, pdu_id: &[u8]) -> Result<Option<PduEvent>> {
self.pduid_pdu.get(pdu_id)?.map_or(Ok(None), |pdu| {
Ok(Some(
serde_json::from_slice(&pdu)
.map_err(|_| Error::bad_database("Invalid PDU in db."))?,
))
})
}
/// Returns the pdu as a `BTreeMap<String, CanonicalJsonValue>`.
pub fn get_pdu_json_from_id(&self, pdu_id: &[u8]) -> Result<Option<CanonicalJsonObject>> {
self.pduid_pdu.get(pdu_id)?.map_or(Ok(None), |pdu| {
Ok(Some(
serde_json::from_slice(&pdu)
.map_err(|_| Error::bad_database("Invalid PDU in db."))?,
))
})
}
/// Removes a pdu and creates a new one with the same id.
fn replace_pdu(&self, pdu_id: &IVec, pdu: &PduEvent) -> Result<()> {
if self.pduid_pdu.get(&pdu_id)?.is_some() {
self.pduid_pdu.insert(
&pdu_id,
&*serde_json::to_string(pdu).expect("PduEvent::to_string always works"),
)?;
Ok(())
} else {
Err(Error::BadRequest(
ErrorKind::NotFound,
"PDU does not exist.",
))
}
}
/// Returns the leaf pdus of a room.
pub fn get_pdu_leaves(&self, room_id: &RoomId) -> Result<HashSet<EventId>> {
let mut prefix = room_id.as_bytes().to_vec();
prefix.push(0xff);
self.roomid_pduleaves
.scan_prefix(prefix)
.values()
.map(|bytes| {
Ok::<_, Error>(
EventId::try_from(utils::string_from_bytes(&bytes?).map_err(|_| {
Error::bad_database("EventID in roomid_pduleaves is invalid unicode.")
})?)
.map_err(|_| Error::bad_database("EventId in roomid_pduleaves is invalid."))?,
)
})
.collect()
}
/// Replace the leaves of a room.
///
/// The provided `event_ids` become the new leaves, this allows a room to have multiple
/// `prev_events`.
pub fn replace_pdu_leaves(&self, room_id: &RoomId, event_ids: &[EventId]) -> Result<()> {
let mut prefix = room_id.as_bytes().to_vec();
prefix.push(0xff);
for key in self.roomid_pduleaves.scan_prefix(&prefix).keys() {
self.roomid_pduleaves.remove(key?)?;
}
for event_id in event_ids {
let mut key = prefix.to_owned();
key.extend_from_slice(event_id.as_bytes());
self.roomid_pduleaves.insert(&key, event_id.as_bytes())?;
}
Ok(())
}
pub fn is_pdu_referenced(&self, pdu: &PduEvent) -> Result<bool> {
let mut key = pdu.room_id().as_bytes().to_vec();
key.extend_from_slice(pdu.event_id().as_bytes());
self.prevevent_parent.contains_key(key).map_err(Into::into)
}
/// Returns the pdu from the outlier tree.
pub fn get_pdu_outlier(&self, event_id: &EventId) -> Result<Option<PduEvent>> {
self.eventid_outlierpdu
.get(event_id.as_bytes())?
.map_or(Ok(None), |pdu| {
serde_json::from_slice(&pdu).map_err(|_| Error::bad_database("Invalid PDU in db."))
})
}
/// Append the PDU as an outlier.
///
/// Any event given to this will be processed (state-res) on another thread.
pub fn add_pdu_outlier(&self, event_id: &EventId, pdu: &CanonicalJsonObject) -> Result<()> {
self.eventid_outlierpdu.insert(
&event_id.as_bytes(),
&*serde_json::to_string(&pdu).expect("CanonicalJsonObject is valid string"),
)?;
Ok(())
}
/// Creates a new persisted data unit and adds it to a room.
///
/// By this point the incoming event should be fully authenticated, no auth happens
/// in `append_pdu`.
#[allow(clippy::too_many_arguments)]
pub fn append_pdu(
&self,
pdu: &PduEvent,
mut pdu_json: CanonicalJsonObject,
count: u64,
pdu_id: IVec,
leaves: &[EventId],
db: &Database,
) -> Result<()> {
// Make unsigned fields correct. This is not properly documented in the spec, but state
// events need to have previous content in the unsigned field, so clients can easily
// interpret things like membership changes
if let Some(state_key) = &pdu.state_key {
if let CanonicalJsonValue::Object(unsigned) = pdu_json
.entry("unsigned".to_owned())
.or_insert_with(|| CanonicalJsonValue::Object(Default::default()))
{
if let Some(shortstatehash) = self.pdu_shortstatehash(&pdu.event_id).unwrap() {
if let Some(prev_state) = self
.state_get(shortstatehash, &pdu.kind, &state_key)
.unwrap()
{
unsigned.insert(
"prev_content".to_owned(),
CanonicalJsonValue::Object(
utils::to_canonical_object(prev_state.content)
.expect("event is valid, we just created it"),
),
);
}
}
} else {
error!("Invalid unsigned type in pdu.");
}
}
// We must keep track of all events that have been referenced.
for leaf in leaves {
let mut key = pdu.room_id().as_bytes().to_vec();
key.extend_from_slice(leaf.as_bytes());
self.prevevent_parent
.insert(key, pdu.event_id().as_bytes())?;
}
self.replace_pdu_leaves(&pdu.room_id, leaves)?;
// Mark as read first so the sending client doesn't get a notification even if appending
// fails
self.edus
.private_read_set(&pdu.room_id, &pdu.sender, count, &db.globals)?;
self.reset_notification_counts(&pdu.sender, &pdu.room_id)?;
self.pduid_pdu.insert(
&pdu_id,
&*serde_json::to_string(&pdu_json)
.expect("CanonicalJsonObject is always a valid String"),
)?;
// This also replaces the eventid of any outliers with the correct
// pduid, removing the place holder.
self.eventid_pduid
.insert(pdu.event_id.as_bytes(), &*pdu_id)?;
// See if the event matches any known pushers
for user in db
.users
.iter()
.filter_map(|r| r.ok())
.filter(|user_id| self.is_joined(&user_id, &pdu.room_id).unwrap_or(false))
.filter(|user_id| !db.users.is_deactivated(user_id).unwrap_or(false))
{
// Don't notify the user of their own events
if user == pdu.sender {
continue;
}
let rules_for_user = db
.account_data
.get::<push_rules::PushRulesEvent>(None, &user, EventType::PushRules)?
.map(|ev| ev.content.global)
.unwrap_or_else(|| push::Ruleset::server_default(&user));
let mut highlight = false;
let mut notify = false;
for action in pusher::get_actions(&user, &rules_for_user, pdu, db)? {
match action {
Action::DontNotify => notify = false,
// TODO: Implement proper support for coalesce
Action::Notify | Action::Coalesce => notify = true,
Action::SetTweak(Tweak::Highlight(true)) => {
highlight = true;
}
_ => {}
};
}
let mut userroom_id = user.as_bytes().to_vec();
userroom_id.push(0xff);
userroom_id.extend_from_slice(pdu.room_id.as_bytes());
if notify {
self.userroomid_notificationcount
.update_and_fetch(&userroom_id, utils::increment)?
.expect("utils::increment will always put in a value");
}
if highlight {
self.userroomid_highlightcount
.update_and_fetch(&userroom_id, utils::increment)?
.expect("utils::increment will always put in a value");
}
for senderkey in db
.pusher
.get_pusher_senderkeys(&user)
.filter_map(|r| r.ok())
{
db.sending.send_push_pdu(&*pdu_id, senderkey)?;
}
}
match pdu.kind {
EventType::RoomRedaction => {
if let Some(redact_id) = &pdu.redacts {
self.redact_pdu(&redact_id, &pdu)?;
}
}
EventType::RoomMember => {
if let Some(state_key) = &pdu.state_key {
// if the state_key fails
let target_user_id = UserId::try_from(state_key.clone())
.expect("This state_key was previously validated");
let membership = serde_json::from_value::<member::MembershipState>(
pdu.content
.get("membership")
.ok_or(Error::BadRequest(
ErrorKind::InvalidParam,
"Invalid member event content",
))?
.clone(),
)
.map_err(|_| {
Error::BadRequest(
ErrorKind::InvalidParam,
"Invalid membership state content.",
)
})?;
let invite_state = match membership {
member::MembershipState::Invite => {
let state = self.calculate_invite_state(pdu)?;
Some(state)
}
_ => None,
};
// Update our membership info, we do this here incase a user is invited
// and immediately leaves we need the DB to record the invite event for auth
self.update_membership(
&pdu.room_id,
&target_user_id,
membership,
&pdu.sender,
invite_state,
db,
)?;
}
}
EventType::RoomMessage => {
if let Some(body) = pdu.content.get("body").and_then(|b| b.as_str()) {
for word in body
.split_terminator(|c: char| !c.is_alphanumeric())
.map(str::to_lowercase)
{
let mut key = pdu.room_id.as_bytes().to_vec();
key.push(0xff);
key.extend_from_slice(word.as_bytes());
key.push(0xff);
key.extend_from_slice(&pdu_id);
self.tokenids.insert(key, &[])?;
}
if body.starts_with(&format!("@conduit:{}: ", db.globals.server_name()))
&& self
.id_from_alias(
&format!("#admins:{}", db.globals.server_name())
.try_into()
.expect("#admins:server_name is a valid room alias"),
)?
.as_ref()
== Some(&pdu.room_id)
{
let mut lines = body.lines();
let command_line = lines.next().expect("each string has at least one line");
let body = lines.collect::<Vec<_>>();
let mut parts = command_line.split_whitespace().skip(1);
if let Some(command) = parts.next() {
let args = parts.collect::<Vec<_>>();
match command {
"register_appservice" => {
if body.len() > 2
&& body[0].trim() == "```"
&& body.last().unwrap().trim() == "```"
{
let appservice_config = body[1..body.len() - 1].join("\n");
let parsed_config = serde_yaml::from_str::<serde_yaml::Value>(
&appservice_config,
);
match parsed_config {
Ok(yaml) => {
db.admin
.send(AdminCommand::RegisterAppservice(yaml));
}
Err(e) => {
db.admin.send(AdminCommand::SendMessage(
message::MessageEventContent::text_plain(
format!(
"Could not parse appservice config: {}",
e
),
),
));
}
}
} else {
db.admin.send(AdminCommand::SendMessage(
message::MessageEventContent::text_plain(
"Expected code block in command body.",
),
));
}
}
"list_appservices" => {
db.admin.send(AdminCommand::ListAppservices);
}
_ => {
db.admin.send(AdminCommand::SendMessage(
message::MessageEventContent::text_plain(format!(
"Command: {}, Args: {:?}",
command, args
)),
));
}
}
}
}
}
}
_ => {}
}
Ok(())
}
pub fn reset_notification_counts(&self, user_id: &UserId, room_id: &RoomId) -> Result<()> {
let mut userroom_id = user_id.as_bytes().to_vec();
userroom_id.push(0xff);
userroom_id.extend_from_slice(room_id.as_bytes());
self.userroomid_notificationcount
.insert(&userroom_id, &0_u64.to_be_bytes())?;
self.userroomid_highlightcount
.insert(&userroom_id, &0_u64.to_be_bytes())?;
Ok(())
}
pub fn notification_count(&self, user_id: &UserId, room_id: &RoomId) -> Result<u64> {
let mut userroom_id = user_id.as_bytes().to_vec();
userroom_id.push(0xff);
userroom_id.extend_from_slice(room_id.as_bytes());
self.userroomid_notificationcount
.get(&userroom_id)?
.map(|bytes| {
utils::u64_from_bytes(&bytes)
.map_err(|_| Error::bad_database("Invalid notification count in db."))
})
.unwrap_or(Ok(0))
}
pub fn highlight_count(&self, user_id: &UserId, room_id: &RoomId) -> Result<u64> {
let mut userroom_id = user_id.as_bytes().to_vec();
userroom_id.push(0xff);
userroom_id.extend_from_slice(room_id.as_bytes());
self.userroomid_highlightcount
.get(&userroom_id)?
.map(|bytes| {
utils::u64_from_bytes(&bytes)
.map_err(|_| Error::bad_database("Invalid highlight count in db."))
})
.unwrap_or(Ok(0))
}
/// Generates a new StateHash and associates it with the incoming event.
///
/// This adds all current state events (not including the incoming event)
/// to `stateid_pduid` and adds the incoming event to `eventid_statehash`.
pub fn set_event_state(
&self,
event_id: &EventId,
state: &StateMap<Arc<PduEvent>>,
globals: &super::globals::Globals,
) -> Result<()> {
let shorteventid = match self.eventid_shorteventid.get(event_id.as_bytes())? {
Some(shorteventid) => shorteventid.to_vec(),
None => {
let shorteventid = globals.next_count()?;
self.eventid_shorteventid
.insert(event_id.as_bytes(), &shorteventid.to_be_bytes())?;
self.shorteventid_eventid
.insert(&shorteventid.to_be_bytes(), event_id.as_bytes())?;
shorteventid.to_be_bytes().to_vec()
}
};
let state_hash = self.calculate_hash(
&state
.values()
.map(|pdu| pdu.event_id.as_bytes())
.collect::<Vec<_>>(),
);
let shortstatehash = match self.statehash_shortstatehash.get(&state_hash)? {
Some(shortstatehash) => {
// State already existed in db
self.shorteventid_shortstatehash
.insert(shorteventid, &*shortstatehash)?;
return Ok(());
}
None => {
let shortstatehash = globals.next_count()?;
self.statehash_shortstatehash
.insert(&state_hash, &shortstatehash.to_be_bytes())?;
shortstatehash.to_be_bytes().to_vec()
}
};
for ((event_type, state_key), pdu) in state {
let mut statekey = event_type.as_ref().as_bytes().to_vec();
statekey.push(0xff);
statekey.extend_from_slice(&state_key.as_bytes());
let shortstatekey = match self.statekey_shortstatekey.get(&statekey)? {
Some(shortstatekey) => shortstatekey.to_vec(),
None => {
let shortstatekey = globals.next_count()?;
self.statekey_shortstatekey
.insert(&statekey, &shortstatekey.to_be_bytes())?;
shortstatekey.to_be_bytes().to_vec()
}
};
let shorteventid = match self.eventid_shorteventid.get(pdu.event_id.as_bytes())? {
Some(shorteventid) => shorteventid.to_vec(),
None => {
let shorteventid = globals.next_count()?;
self.eventid_shorteventid
.insert(pdu.event_id.as_bytes(), &shorteventid.to_be_bytes())?;
self.shorteventid_eventid
.insert(&shorteventid.to_be_bytes(), pdu.event_id.as_bytes())?;
shorteventid.to_be_bytes().to_vec()
}
};
let mut state_id = shortstatehash.clone();
state_id.extend_from_slice(&shortstatekey);
self.stateid_shorteventid
.insert(&*state_id, &*shorteventid)?;
}
self.shorteventid_shortstatehash
.insert(shorteventid, &*shortstatehash)?;
Ok(())
}
/// Generates a new StateHash and associates it with the incoming event.
///
/// This adds all current state events (not including the incoming event)
/// to `stateid_pduid` and adds the incoming event to `eventid_statehash`.
pub fn append_to_state(
&self,
new_pdu: &PduEvent,
globals: &super::globals::Globals,
) -> Result<u64> {
let old_state = if let Some(old_shortstatehash) =
self.roomid_shortstatehash.get(new_pdu.room_id.as_bytes())?
{
// Store state for event. The state does not include the event itself.
// Instead it's the state before the pdu, so the room's old state.
let shorteventid = match self.eventid_shorteventid.get(new_pdu.event_id.as_bytes())? {
Some(shorteventid) => shorteventid.to_vec(),
None => {
let shorteventid = globals.next_count()?;
self.eventid_shorteventid
.insert(new_pdu.event_id.as_bytes(), &shorteventid.to_be_bytes())?;
self.shorteventid_eventid
.insert(&shorteventid.to_be_bytes(), new_pdu.event_id.as_bytes())?;
shorteventid.to_be_bytes().to_vec()
}
};
self.shorteventid_shortstatehash
.insert(shorteventid, &old_shortstatehash)?;
if new_pdu.state_key.is_none() {
return utils::u64_from_bytes(&old_shortstatehash).map_err(|_| {
Error::bad_database("Invalid shortstatehash in roomid_shortstatehash.")
});
}
self.stateid_shorteventid
.scan_prefix(&old_shortstatehash)
.filter_map(|pdu| pdu.map_err(|e| error!("{}", e)).ok())
// Chop the old_shortstatehash out leaving behind the short state key
.map(|(k, v)| (k[old_shortstatehash.len()..].to_vec(), v))
.collect::<HashMap<Vec<u8>, IVec>>()
} else {
HashMap::new()
};
if let Some(state_key) = &new_pdu.state_key {
let mut new_state: HashMap<Vec<u8>, IVec> = old_state;
let mut new_state_key = new_pdu.kind.as_ref().as_bytes().to_vec();
new_state_key.push(0xff);
new_state_key.extend_from_slice(state_key.as_bytes());
let shortstatekey = match self.statekey_shortstatekey.get(&new_state_key)? {
Some(shortstatekey) => shortstatekey.to_vec(),
None => {
let shortstatekey = globals.next_count()?;
self.statekey_shortstatekey
.insert(&new_state_key, &shortstatekey.to_be_bytes())?;
shortstatekey.to_be_bytes().to_vec()
}
};
let shorteventid = match self.eventid_shorteventid.get(new_pdu.event_id.as_bytes())? {
Some(shorteventid) => shorteventid.to_vec(),
None => {
let shorteventid = globals.next_count()?;
self.eventid_shorteventid
.insert(new_pdu.event_id.as_bytes(), &shorteventid.to_be_bytes())?;
self.shorteventid_eventid
.insert(&shorteventid.to_be_bytes(), new_pdu.event_id.as_bytes())?;
shorteventid.to_be_bytes().to_vec()
}
};
new_state.insert(shortstatekey, shorteventid.into());
let new_state_hash = self.calculate_hash(
&new_state
.values()
.map(|event_id| &**event_id)
.collect::<Vec<_>>(),
);
let shortstatehash = match self.statehash_shortstatehash.get(&new_state_hash)? {
Some(shortstatehash) => {
warn!("state hash already existed?!");
utils::u64_from_bytes(&shortstatehash)
.map_err(|_| Error::bad_database("PDU has invalid count bytes."))?
}
None => {
let shortstatehash = globals.next_count()?;
self.statehash_shortstatehash
.insert(&new_state_hash, &shortstatehash.to_be_bytes())?;
shortstatehash
}
};
for (shortstatekey, shorteventid) in new_state {
let mut state_id = shortstatehash.to_be_bytes().to_vec();
state_id.extend_from_slice(&shortstatekey);
self.stateid_shorteventid.insert(&state_id, &shorteventid)?;
}
Ok(shortstatehash)
} else {
Err(Error::bad_database(
"Tried to insert non-state event into room without a state.",
))
}
}
pub fn calculate_invite_state(
&self,
invite_event: &PduEvent,
) -> Result<Vec<Raw<AnyStrippedStateEvent>>> {
let mut state = Vec::new();
// Add recommended events
if let Some(e) =
self.room_state_get(&invite_event.room_id, &EventType::RoomJoinRules, "")?
{
state.push(e.to_stripped_state_event());
}
if let Some(e) =
self.room_state_get(&invite_event.room_id, &EventType::RoomCanonicalAlias, "")?
{
state.push(e.to_stripped_state_event());
}
if let Some(e) = self.room_state_get(&invite_event.room_id, &EventType::RoomAvatar, "")? {
state.push(e.to_stripped_state_event());
}
if let Some(e) = self.room_state_get(&invite_event.room_id, &EventType::RoomName, "")? {
state.push(e.to_stripped_state_event());
}
if let Some(e) = self.room_state_get(
&invite_event.room_id,
&EventType::RoomMember,
invite_event.sender.as_str(),
)? {
state.push(e.to_stripped_state_event());
}
state.push(invite_event.to_stripped_state_event());
Ok(state)
}
pub fn set_room_state(&self, room_id: &RoomId, shortstatehash: u64) -> Result<()> {
self.roomid_shortstatehash
.insert(room_id.as_bytes(), &shortstatehash.to_be_bytes())?;
Ok(())
}
/// Creates a new persisted data unit and adds it to a room.
pub fn build_and_append_pdu(
&self,
pdu_builder: PduBuilder,
sender: &UserId,
room_id: &RoomId,
db: &Database,
) -> Result<EventId> {
let PduBuilder {
event_type,
content,
unsigned,
state_key,
redacts,
} = pdu_builder;
// TODO: Make sure this isn't called twice in parallel
let prev_events = self
.get_pdu_leaves(&room_id)?
.into_iter()
.take(20)
.collect::<Vec<_>>();
let create_event = self.room_state_get(&room_id, &EventType::RoomCreate, "")?;
let create_event_content = create_event
.as_ref()
.map(|create_event| {
Ok::<_, Error>(
serde_json::from_value::<Raw<CreateEventContent>>(create_event.content.clone())
.expect("Raw::from_value always works.")
.deserialize()
.map_err(|_| Error::bad_database("Invalid PowerLevels event in db."))?,
)
})
.transpose()?;
let create_prev_event = if prev_events.len() == 1
&& Some(&prev_events[0]) == create_event.as_ref().map(|c| &c.event_id)
{
create_event.map(Arc::new)
} else {
None
};
// If there was no create event yet, assume we are creating a version 6 room right now
let room_version = create_event_content.map_or(RoomVersionId::Version6, |create_event| {
create_event.room_version
});
let auth_events = self.get_auth_events(
&room_id,
&event_type,
&sender,
state_key.as_deref(),
&content,
)?;
// Our depth is the maximum depth of prev_events + 1
let depth = prev_events
.iter()
.filter_map(|event_id| Some(self.get_pdu(event_id).ok()??.depth))
.max()
.unwrap_or_else(|| uint!(0))
+ uint!(1);
let mut unsigned = unsigned.unwrap_or_default();
if let Some(state_key) = &state_key {
if let Some(prev_pdu) = self.room_state_get(&room_id, &event_type, &state_key)? {
unsigned.insert("prev_content".to_owned(), prev_pdu.content);
unsigned.insert(
"prev_sender".to_owned(),
serde_json::to_value(prev_pdu.sender).expect("UserId::to_value always works"),
);
}
}
let mut pdu = PduEvent {
event_id: ruma::event_id!("$thiswillbefilledinlater"),
room_id: room_id.clone(),
sender: sender.clone(),
origin_server_ts: utils::millis_since_unix_epoch()
.try_into()
.expect("time is valid"),
kind: event_type,
content,
state_key,
prev_events,
depth,
auth_events: auth_events
.iter()
.map(|(_, pdu)| pdu.event_id.clone())
.collect(),
redacts,
unsigned,
hashes: ruma::events::pdu::EventHash {
sha256: "aaa".to_owned(),
},
signatures: BTreeMap::new(),
};
let auth_check = state_res::auth_check(
&room_version,
&Arc::new(pdu.clone()),
create_prev_event,
&auth_events,
None, // TODO: third_party_invite
)
.map_err(|e| {
error!("{:?}", e);
Error::bad_database("Auth check failed.")
})?;
if !auth_check {
return Err(Error::BadRequest(
ErrorKind::InvalidParam,
"Event is not authorized.",
));
}
// Hash and sign
let mut pdu_json =
utils::to_canonical_object(&pdu).expect("event is valid, we just created it");
pdu_json.remove("event_id");
// Add origin because synapse likes that (and it's required in the spec)
pdu_json.insert(
"origin".to_owned(),
CanonicalJsonValue::String(db.globals.server_name().as_ref().to_owned()),
);
ruma::signatures::hash_and_sign_event(
db.globals.server_name().as_str(),
db.globals.keypair(),
&mut pdu_json,
&room_version,
)
.expect("event is valid, we just created it");
// Generate event id
pdu.event_id = EventId::try_from(&*format!(
"${}",
ruma::signatures::reference_hash(&pdu_json, &room_version)
.expect("ruma can calculate reference hashes")
))
.expect("ruma's reference hashes are valid event ids");
pdu_json.insert(
"event_id".to_owned(),
CanonicalJsonValue::String(pdu.event_id.as_str().to_owned()),
);
// Increment the last index and use that
// This is also the next_batch/since value
let count = db.globals.next_count()?;
let mut pdu_id = room_id.as_bytes().to_vec();
pdu_id.push(0xff);
pdu_id.extend_from_slice(&count.to_be_bytes());
// We append to state before appending the pdu, so we don't have a moment in time with the
// pdu without it's state. This is okay because append_pdu can't fail.
let statehashid = self.append_to_state(&pdu, &db.globals)?;
self.append_pdu(
&pdu,
pdu_json,
count,
pdu_id.clone().into(),
// Since this PDU references all pdu_leaves we can update the leaves
// of the room
&[pdu.event_id.clone()],
db,
)?;
// We set the room state after inserting the pdu, so that we never have a moment in time
// where events in the current room state do not exist
self.set_room_state(&room_id, statehashid)?;
for server in self
.room_servers(room_id)
.filter_map(|r| r.ok())
.filter(|server| &**server != db.globals.server_name())
{
db.sending.send_pdu(&server, &pdu_id)?;
}
for appservice in db.appservice.iter_all().filter_map(|r| r.ok()) {
if let Some(namespaces) = appservice.1.get("namespaces") {
let users = namespaces
.get("users")
.and_then(|users| users.as_sequence())
.map_or_else(Vec::new, |users| {
users
.iter()
.map(|users| {
users
.get("regex")
.and_then(|regex| regex.as_str())
.and_then(|regex| Regex::new(regex).ok())
})
.filter_map(|o| o)
.collect::<Vec<_>>()
});
let aliases = namespaces
.get("aliases")
.and_then(|aliases| aliases.as_sequence())
.map_or_else(Vec::new, |aliases| {
aliases
.iter()
.map(|aliases| {
aliases
.get("regex")
.and_then(|regex| regex.as_str())
.and_then(|regex| Regex::new(regex).ok())
})
.filter_map(|o| o)
.collect::<Vec<_>>()
});
let rooms = namespaces
.get("rooms")
.and_then(|rooms| rooms.as_sequence());
let bridge_user_id = appservice
.1
.get("sender_localpart")
.and_then(|string| string.as_str())
.and_then(|string| {
UserId::parse_with_server_name(string, db.globals.server_name()).ok()
});
let user_is_joined =
|bridge_user_id| self.is_joined(&bridge_user_id, room_id).unwrap_or(false);
let matching_users = |users: &Regex| {
users.is_match(pdu.sender.as_str())
|| pdu.kind == EventType::RoomMember
&& pdu
.state_key
.as_ref()
.map_or(false, |state_key| users.is_match(&state_key))
|| self.room_members(&room_id).any(|userid| {
userid.map_or(false, |userid| users.is_match(userid.as_str()))
})
};
let matching_aliases = |aliases: &Regex| {
self.room_aliases(&room_id)
.filter_map(|r| r.ok())
.any(|room_alias| aliases.is_match(room_alias.as_str()))
};
if bridge_user_id.map_or(false, user_is_joined)
|| aliases.iter().any(matching_aliases)
|| rooms.map_or(false, |rooms| rooms.contains(&room_id.as_str().into()))
|| users.iter().any(matching_users)
{
db.sending.send_pdu_appservice(&appservice.0, &pdu_id)?;
}
}
}
Ok(pdu.event_id)
}
/// Returns an iterator over all PDUs in a room.
#[tracing::instrument(skip(self))]
pub fn all_pdus(
&self,
user_id: &UserId,
room_id: &RoomId,
) -> Result<impl Iterator<Item = Result<(IVec, PduEvent)>>> {
self.pdus_since(user_id, room_id, 0)
}
/// Returns a double-ended iterator over all events in a room that happened after the event with id `since`
/// in chronological order.
#[tracing::instrument(skip(self))]
pub fn pdus_since(
&self,
user_id: &UserId,
room_id: &RoomId,
since: u64,
) -> Result<impl DoubleEndedIterator<Item = Result<(IVec, PduEvent)>>> {
let mut prefix = room_id.as_bytes().to_vec();
prefix.push(0xff);
// Skip the first pdu if it's exactly at since, because we sent that last time
let mut first_pdu_id = prefix.clone();
first_pdu_id.extend_from_slice(&(since + 1).to_be_bytes());
let mut last_pdu_id = prefix;
last_pdu_id.extend_from_slice(&u64::MAX.to_be_bytes());
let user_id = user_id.clone();
Ok(self
.pduid_pdu
.range(first_pdu_id..last_pdu_id)
.filter_map(|r| r.ok())
.map(move |(pdu_id, v)| {
let mut pdu = serde_json::from_slice::<PduEvent>(&v)
.map_err(|_| Error::bad_database("PDU in db is invalid."))?;
if pdu.sender != user_id {
pdu.unsigned.remove("transaction_id");
}
Ok((pdu_id, pdu))
}))
}
/// Returns an iterator over all events and their tokens in a room that happened before the
/// event with id `until` in reverse-chronological order.
pub fn pdus_until(
&self,
user_id: &UserId,
room_id: &RoomId,
until: u64,
) -> impl Iterator<Item = Result<(IVec, PduEvent)>> {
// Create the first part of the full pdu id
let mut prefix = room_id.as_bytes().to_vec();
prefix.push(0xff);
let mut current = prefix.clone();
current.extend_from_slice(&until.to_be_bytes());
let current: &[u8] = &current;
let user_id = user_id.clone();
self.pduid_pdu
.range(..current)
.rev()
.filter_map(|r| r.ok())
.take_while(move |(k, _)| k.starts_with(&prefix))
.map(move |(pdu_id, v)| {
let mut pdu = serde_json::from_slice::<PduEvent>(&v)
.map_err(|_| Error::bad_database("PDU in db is invalid."))?;
if pdu.sender != user_id {
pdu.unsigned.remove("transaction_id");
}
Ok((pdu_id, pdu))
})
}
/// Returns an iterator over all events and their token in a room that happened after the event
/// with id `from` in chronological order.
#[tracing::instrument(skip(self))]
pub fn pdus_after(
&self,
user_id: &UserId,
room_id: &RoomId,
from: u64,
) -> impl Iterator<Item = Result<(IVec, PduEvent)>> {
// Create the first part of the full pdu id
let mut prefix = room_id.as_bytes().to_vec();
prefix.push(0xff);
let mut current = prefix.clone();
current.extend_from_slice(&(from + 1).to_be_bytes()); // +1 so we don't send the base event
let current: &[u8] = &current;
let user_id = user_id.clone();
self.pduid_pdu
.range(current..)
.filter_map(|r| r.ok())
.take_while(move |(k, _)| k.starts_with(&prefix))
.map(move |(pdu_id, v)| {
let mut pdu = serde_json::from_slice::<PduEvent>(&v)
.map_err(|_| Error::bad_database("PDU in db is invalid."))?;
if pdu.sender != user_id {
pdu.unsigned.remove("transaction_id");
}
Ok((pdu_id, pdu))
})
}
/// Replace a PDU with the redacted form.
pub fn redact_pdu(&self, event_id: &EventId, reason: &PduEvent) -> Result<()> {
if let Some(pdu_id) = self.get_pdu_id(event_id)? {
let mut pdu = self
.get_pdu_from_id(&pdu_id)?
.ok_or_else(|| Error::bad_database("PDU ID points to invalid PDU."))?;
pdu.redact(&reason)?;
self.replace_pdu(&pdu_id, &pdu)?;
Ok(())
} else {
Err(Error::BadRequest(
ErrorKind::NotFound,
"Event ID does not exist.",
))
}
}
/// Update current membership data.
pub fn update_membership(
&self,
room_id: &RoomId,
user_id: &UserId,
membership: member::MembershipState,
sender: &UserId,
last_state: Option<Vec<Raw<AnyStrippedStateEvent>>>,
db: &Database,
) -> Result<()> {
let mut roomserver_id = room_id.as_bytes().to_vec();
roomserver_id.push(0xff);
roomserver_id.extend_from_slice(user_id.server_name().as_bytes());
let mut userroom_id = user_id.as_bytes().to_vec();
userroom_id.push(0xff);
userroom_id.extend_from_slice(room_id.as_bytes());
let mut roomuser_id = room_id.as_bytes().to_vec();
roomuser_id.push(0xff);
roomuser_id.extend_from_slice(user_id.as_bytes());
match &membership {
member::MembershipState::Join => {
// Check if the user never joined this room
if !self.once_joined(&user_id, &room_id)? {
// Add the user ID to the join list then
self.roomuseroncejoinedids.insert(&userroom_id, &[])?;
// Check if the room has a predecessor
if let Some(predecessor) = self
.room_state_get(&room_id, &EventType::RoomCreate, "")?
.and_then(|create| {
serde_json::from_value::<
Raw<ruma::events::room::create::CreateEventContent>,
>(create.content)
.expect("Raw::from_value always works")
.deserialize()
.ok()
})
.and_then(|content| content.predecessor)
{
// Copy user settings from predecessor to the current room:
// - Push rules
//
// TODO: finish this once push rules are implemented.
//
// let mut push_rules_event_content = account_data
// .get::<ruma::events::push_rules::PushRulesEvent>(
// None,
// user_id,
// EventType::PushRules,
// )?;
//
// NOTE: find where `predecessor.room_id` match
// and update to `room_id`.
//
// account_data
// .update(
// None,
// user_id,
// EventType::PushRules,
// &push_rules_event_content,
// globals,
// )
// .ok();
// Copy old tags to new room
if let Some(tag_event) =
db.account_data.get::<ruma::events::tag::TagEvent>(
Some(&predecessor.room_id),
user_id,
EventType::Tag,
)?
{
db.account_data
.update(
Some(room_id),
user_id,
EventType::Tag,
&tag_event,
&db.globals,
)
.ok();
};
// Copy direct chat flag
if let Some(mut direct_event) =
db.account_data.get::<ruma::events::direct::DirectEvent>(
None,
user_id,
EventType::Direct,
)?
{
let mut room_ids_updated = false;
for room_ids in direct_event.content.0.values_mut() {
if room_ids.iter().any(|r| r == &predecessor.room_id) {
room_ids.push(room_id.clone());
room_ids_updated = true;
}
}
if room_ids_updated {
db.account_data.update(
None,
user_id,
EventType::Direct,
&direct_event,
&db.globals,
)?;
}
};
}
}
self.roomserverids.insert(&roomserver_id, &[])?;
self.userroomid_joined.insert(&userroom_id, &[])?;
self.roomuserid_joined.insert(&roomuser_id, &[])?;
self.userroomid_invitestate.remove(&userroom_id)?;
self.roomuserid_invitecount.remove(&roomuser_id)?;
self.userroomid_leftstate.remove(&userroom_id)?;
self.roomuserid_leftcount.remove(&roomuser_id)?;
}
member::MembershipState::Invite => {
// We want to know if the sender is ignored by the receiver
let is_ignored = db
.account_data
.get::<ignored_user_list::IgnoredUserListEvent>(
None, // Ignored users are in global account data
&user_id, // Receiver
EventType::IgnoredUserList,
)?
.map_or(false, |ignored| {
ignored.content.ignored_users.contains(&sender)
});
if is_ignored {
return Ok(());
}
self.roomserverids.insert(&roomserver_id, &[])?;
self.userroomid_invitestate.insert(
&userroom_id,
serde_json::to_vec(&last_state.unwrap_or_default())
.expect("state to bytes always works"),
)?;
self.roomuserid_invitecount
.insert(&roomuser_id, &db.globals.next_count()?.to_be_bytes())?;
self.userroomid_joined.remove(&userroom_id)?;
self.roomuserid_joined.remove(&roomuser_id)?;
self.userroomid_leftstate.remove(&userroom_id)?;
self.roomuserid_leftcount.remove(&roomuser_id)?;
}
member::MembershipState::Leave | member::MembershipState::Ban => {
if self
.room_members(room_id)
.chain(self.room_members_invited(room_id))
.filter_map(|r| r.ok())
.all(|u| u.server_name() != user_id.server_name())
{
self.roomserverids.remove(&roomserver_id)?;
}
self.userroomid_leftstate.insert(
&userroom_id,
serde_json::to_vec(&Vec::<Raw<AnySyncStateEvent>>::new()).unwrap(),
)?; // TODO
self.roomuserid_leftcount
.insert(&roomuser_id, &db.globals.next_count()?.to_be_bytes())?;
self.userroomid_joined.remove(&userroom_id)?;
self.roomuserid_joined.remove(&roomuser_id)?;
self.userroomid_invitestate.remove(&userroom_id)?;
self.roomuserid_invitecount.remove(&roomuser_id)?;
}
_ => {}
}
Ok(())
}
pub async fn leave_room(
&self,
user_id: &UserId,
room_id: &RoomId,
db: &Database,
) -> Result<()> {
// Ask a remote server if we don't have this room
if !self.exists(room_id)? && room_id.server_name() != db.globals.server_name() {
if let Err(e) = self.remote_leave_room(user_id, room_id, db).await {
warn!("Failed to leave room {} remotely: {}", user_id, e);
// Don't tell the client about this error
}
let last_state = self
.invite_state(user_id, room_id)?
.map_or_else(|| self.left_state(user_id, room_id), |s| Ok(Some(s)))?;
// We always drop the invite, we can't rely on other servers
self.update_membership(
room_id,
user_id,
MembershipState::Leave,
user_id,
last_state,
db,
)?;
} else {
let mut event = serde_json::from_value::<Raw<member::MemberEventContent>>(
self.room_state_get(room_id, &EventType::RoomMember, &user_id.to_string())?
.ok_or(Error::BadRequest(
ErrorKind::BadState,
"Cannot leave a room you are not a member of.",
))?
.content,
)
.expect("from_value::<Raw<..>> can never fail")
.deserialize()
.map_err(|_| Error::bad_database("Invalid member event in database."))?;
event.membership = member::MembershipState::Leave;
self.build_and_append_pdu(
PduBuilder {
event_type: EventType::RoomMember,
content: serde_json::to_value(event)
.expect("event is valid, we just created it"),
unsigned: None,
state_key: Some(user_id.to_string()),
redacts: None,
},
user_id,
room_id,
db,
)?;
}
Ok(())
}
async fn remote_leave_room(
&self,
user_id: &UserId,
room_id: &RoomId,
db: &Database,
) -> Result<()> {
let mut make_leave_response_and_server = Err(Error::BadServerResponse(
"No server available to assist in leaving.",
));
let invite_state = db
.rooms
.invite_state(user_id, room_id)?
.ok_or(Error::BadRequest(
ErrorKind::BadState,
"User is not invited.",
))?;
let servers = invite_state
.iter()
.filter_map(|event| {
serde_json::from_str::<serde_json::Value>(&event.json().to_string()).ok()
})
.filter_map(|event| event.get("sender").cloned())
.filter_map(|sender| sender.as_str().map(|s| s.to_owned()))
.filter_map(|sender| UserId::try_from(sender).ok())
.map(|user| user.server_name().to_owned())
.collect::<HashSet<_>>();
for remote_server in servers {
let make_leave_response = db
.sending
.send_federation_request(
&db.globals,
&remote_server,
federation::membership::get_leave_event::v1::Request { room_id, user_id },
)
.await;
make_leave_response_and_server = make_leave_response.map(|r| (r, remote_server));
if make_leave_response_and_server.is_ok() {
break;
}
}
let (make_leave_response, remote_server) = make_leave_response_and_server?;
let room_version = match make_leave_response.room_version {
Some(room_version) if room_version == RoomVersionId::Version6 => room_version,
_ => return Err(Error::BadServerResponse("Room version is not supported")),
};
let mut leave_event_stub =
serde_json::from_str::<CanonicalJsonObject>(make_leave_response.event.json().get())
.map_err(|_| {
Error::BadServerResponse("Invalid make_leave event json received from server.")
})?;
// TODO: Is origin needed?
leave_event_stub.insert(
"origin".to_owned(),
CanonicalJsonValue::String(db.globals.server_name().as_str().to_owned()),
);
leave_event_stub.insert(
"origin_server_ts".to_owned(),
CanonicalJsonValue::Integer(
utils::millis_since_unix_epoch()
.try_into()
.expect("Timestamp is valid js_int value"),
),
);
// We don't leave the event id in the pdu because that's only allowed in v1 or v2 rooms
leave_event_stub.remove("event_id");
// In order to create a compatible ref hash (EventID) the `hashes` field needs to be present
ruma::signatures::hash_and_sign_event(
db.globals.server_name().as_str(),
db.globals.keypair(),
&mut leave_event_stub,
&room_version,
)
.expect("event is valid, we just created it");
// Generate event id
let event_id = EventId::try_from(&*format!(
"${}",
ruma::signatures::reference_hash(&leave_event_stub, &room_version)
.expect("ruma can calculate reference hashes")
))
.expect("ruma's reference hashes are valid event ids");
// Add event_id back
leave_event_stub.insert(
"event_id".to_owned(),
CanonicalJsonValue::String(event_id.as_str().to_owned()),
);
// It has enough fields to be called a proper event now
let leave_event = leave_event_stub;
db.sending
.send_federation_request(
&db.globals,
&remote_server,
federation::membership::create_leave_event::v2::Request {
room_id,
event_id: &event_id,
pdu: PduEvent::convert_to_outgoing_federation_event(leave_event.clone()),
},
)
.await?;
Ok(())
}
/// Makes a user forget a room.
pub fn forget(&self, room_id: &RoomId, user_id: &UserId) -> Result<()> {
let mut userroom_id = user_id.as_bytes().to_vec();
userroom_id.push(0xff);
userroom_id.extend_from_slice(room_id.as_bytes());
let mut roomuser_id = room_id.as_bytes().to_vec();
roomuser_id.push(0xff);
roomuser_id.extend_from_slice(user_id.as_bytes());
self.userroomid_leftstate.remove(userroom_id)?;
self.roomuserid_leftcount.remove(roomuser_id)?;
Ok(())
}
pub fn set_alias(
&self,
alias: &RoomAliasId,
room_id: Option<&RoomId>,
globals: &super::globals::Globals,
) -> Result<()> {
if let Some(room_id) = room_id {
// New alias
self.alias_roomid
.insert(alias.alias(), room_id.as_bytes())?;
let mut aliasid = room_id.as_bytes().to_vec();
aliasid.push(0xff);
aliasid.extend_from_slice(&globals.next_count()?.to_be_bytes());
self.aliasid_alias.insert(aliasid, &*alias.as_bytes())?;
} else {
// room_id=None means remove alias
let room_id = self
.alias_roomid
.remove(alias.alias())?
.ok_or(Error::BadRequest(
ErrorKind::NotFound,
"Alias does not exist.",
))?;
let mut prefix = room_id.to_vec();
prefix.push(0xff);
for key in self.aliasid_alias.scan_prefix(prefix).keys() {
self.aliasid_alias.remove(key?)?;
}
}
Ok(())
}
pub fn id_from_alias(&self, alias: &RoomAliasId) -> Result<Option<RoomId>> {
self.alias_roomid
.get(alias.alias())?
.map_or(Ok(None), |bytes| {
Ok(Some(
RoomId::try_from(utils::string_from_bytes(&bytes).map_err(|_| {
Error::bad_database("Room ID in alias_roomid is invalid unicode.")
})?)
.map_err(|_| Error::bad_database("Room ID in alias_roomid is invalid."))?,
))
})
}
pub fn room_aliases(&self, room_id: &RoomId) -> impl Iterator<Item = Result<RoomAliasId>> {
let mut prefix = room_id.as_bytes().to_vec();
prefix.push(0xff);
self.aliasid_alias
.scan_prefix(prefix)
.values()
.map(|bytes| {
Ok(utils::string_from_bytes(&bytes?)
.map_err(|_| Error::bad_database("Invalid alias bytes in aliasid_alias."))?
.try_into()
.map_err(|_| Error::bad_database("Invalid alias in aliasid_alias."))?)
})
}
pub fn set_public(&self, room_id: &RoomId, public: bool) -> Result<()> {
if public {
self.publicroomids.insert(room_id.as_bytes(), &[])?;
} else {
self.publicroomids.remove(room_id.as_bytes())?;
}
Ok(())
}
pub fn is_public_room(&self, room_id: &RoomId) -> Result<bool> {
Ok(self.publicroomids.contains_key(room_id.as_bytes())?)
}
pub fn public_rooms(&self) -> impl Iterator<Item = Result<RoomId>> {
self.publicroomids.iter().keys().map(|bytes| {
Ok(
RoomId::try_from(utils::string_from_bytes(&bytes?).map_err(|_| {
Error::bad_database("Room ID in publicroomids is invalid unicode.")
})?)
.map_err(|_| Error::bad_database("Room ID in publicroomids is invalid."))?,
)
})
}
pub fn search_pdus<'a>(
&'a self,
room_id: &RoomId,
search_string: &str,
) -> Result<(impl Iterator<Item = Vec<u8>> + 'a, Vec<String>)> {
let mut prefix = room_id.as_bytes().to_vec();
prefix.push(0xff);
let words = search_string
.split_terminator(|c: char| !c.is_alphanumeric())
.map(str::to_lowercase)
.collect::<Vec<_>>();
let iterators = words.clone().into_iter().map(move |word| {
let mut prefix2 = prefix.clone();
prefix2.extend_from_slice(word.as_bytes());
prefix2.push(0xff);
self.tokenids
.scan_prefix(&prefix2)
.keys()
.rev() // Newest pdus first
.filter_map(|r| r.ok())
.map(|key| {
let pduid_index = key
.iter()
.enumerate()
.filter(|(_, &b)| b == 0xff)
.nth(1)
.ok_or_else(|| Error::bad_database("Invalid tokenid in db."))?
.0
+ 1; // +1 because the pdu id starts AFTER the separator
let pdu_id = key[pduid_index..].to_vec();
Ok::<_, Error>(pdu_id)
})
.filter_map(|r| r.ok())
});
Ok((
utils::common_elements(iterators, |a, b| {
// We compare b with a because we reversed the iterator earlier
b.cmp(a)
})
.unwrap(),
words,
))
}
#[tracing::instrument(skip(self))]
pub fn get_shared_rooms<'a>(
&'a self,
users: Vec<UserId>,
) -> impl Iterator<Item = Result<RoomId>> + 'a {
let iterators = users.into_iter().map(move |user_id| {
let mut prefix = user_id.as_bytes().to_vec();
prefix.push(0xff);
self.userroomid_joined
.scan_prefix(&prefix)
.keys()
.filter_map(|r| r.ok())
.map(|key| {
let roomid_index = key
.iter()
.enumerate()
.find(|(_, &b)| b == 0xff)
.ok_or_else(|| Error::bad_database("Invalid userroomid_joined in db."))?
.0
+ 1; // +1 because the room id starts AFTER the separator
let room_id = key[roomid_index..].to_vec();
Ok::<_, Error>(room_id)
})
.filter_map(|r| r.ok())
});
// We use the default compare function because keys are sorted correctly (not reversed)
utils::common_elements(iterators, Ord::cmp)
.expect("users is not empty")
.map(|bytes| {
RoomId::try_from(utils::string_from_bytes(&*bytes).map_err(|_| {
Error::bad_database("Invalid RoomId bytes in userroomid_joined")
})?)
.map_err(|_| Error::bad_database("Invalid RoomId in userroomid_joined."))
})
}
/// Returns an iterator of all servers participating in this room.
pub fn room_servers(&self, room_id: &RoomId) -> impl Iterator<Item = Result<Box<ServerName>>> {
let mut prefix = room_id.as_bytes().to_vec();
prefix.push(0xff);
self.roomserverids.scan_prefix(prefix).keys().map(|key| {
Ok(Box::<ServerName>::try_from(
utils::string_from_bytes(
&key?
.rsplit(|&b| b == 0xff)
.next()
.expect("rsplit always returns an element"),
)
.map_err(|_| {
Error::bad_database("Server name in roomserverids is invalid unicode.")
})?,
)
.map_err(|_| Error::bad_database("Server name in roomserverids is invalid."))?)
})
}
/// Returns an iterator over all joined members of a room.
#[tracing::instrument(skip(self))]
pub fn room_members(&self, room_id: &RoomId) -> impl Iterator<Item = Result<UserId>> {
let mut prefix = room_id.as_bytes().to_vec();
prefix.push(0xff);
self.roomuserid_joined
.scan_prefix(prefix)
.keys()
.map(|key| {
Ok(UserId::try_from(
utils::string_from_bytes(
&key?
.rsplit(|&b| b == 0xff)
.next()
.expect("rsplit always returns an element"),
)
.map_err(|_| {
Error::bad_database("User ID in roomuserid_joined is invalid unicode.")
})?,
)
.map_err(|_| Error::bad_database("User ID in roomuserid_joined is invalid."))?)
})
}
/// Returns an iterator over all User IDs who ever joined a room.
pub fn room_useroncejoined(&self, room_id: &RoomId) -> impl Iterator<Item = Result<UserId>> {
let mut prefix = room_id.as_bytes().to_vec();
prefix.push(0xff);
self.roomuseroncejoinedids
.scan_prefix(prefix)
.keys()
.map(|key| {
Ok(UserId::try_from(
utils::string_from_bytes(
&key?
.rsplit(|&b| b == 0xff)
.next()
.expect("rsplit always returns an element"),
)
.map_err(|_| {
Error::bad_database("User ID in room_useroncejoined is invalid unicode.")
})?,
)
.map_err(|_| Error::bad_database("User ID in room_useroncejoined is invalid."))?)
})
}
/// Returns an iterator over all invited members of a room.
#[tracing::instrument(skip(self))]
pub fn room_members_invited(&self, room_id: &RoomId) -> impl Iterator<Item = Result<UserId>> {
let mut prefix = room_id.as_bytes().to_vec();
prefix.push(0xff);
self.roomuserid_invitecount
.scan_prefix(prefix)
.keys()
.map(|key| {
Ok(UserId::try_from(
utils::string_from_bytes(
&key?
.rsplit(|&b| b == 0xff)
.next()
.expect("rsplit always returns an element"),
)
.map_err(|_| {
Error::bad_database("User ID in roomuserid_invited is invalid unicode.")
})?,
)
.map_err(|_| Error::bad_database("User ID in roomuserid_invited is invalid."))?)
})
}
#[tracing::instrument(skip(self))]
pub fn get_invite_count(&self, room_id: &RoomId, user_id: &UserId) -> Result<Option<u64>> {
let mut key = room_id.as_bytes().to_vec();
key.push(0xff);
key.extend_from_slice(user_id.as_bytes());
self.roomuserid_invitecount
.get(key)?
.map_or(Ok(None), |bytes| {
Ok(Some(utils::u64_from_bytes(&bytes).map_err(|_| {
Error::bad_database("Invalid invitecount in db.")
})?))
})
}
#[tracing::instrument(skip(self))]
pub fn get_left_count(&self, room_id: &RoomId, user_id: &UserId) -> Result<Option<u64>> {
let mut key = room_id.as_bytes().to_vec();
key.push(0xff);
key.extend_from_slice(user_id.as_bytes());
self.roomuserid_leftcount
.get(key)?
.map_or(Ok(None), |bytes| {
Ok(Some(utils::u64_from_bytes(&bytes).map_err(|_| {
Error::bad_database("Invalid leftcount in db.")
})?))
})
}
/// Returns an iterator over all rooms this user joined.
#[tracing::instrument(skip(self))]
pub fn rooms_joined(&self, user_id: &UserId) -> impl Iterator<Item = Result<RoomId>> {
self.userroomid_joined
.scan_prefix(user_id.as_bytes())
.keys()
.map(|key| {
Ok(RoomId::try_from(
utils::string_from_bytes(
&key?
.rsplit(|&b| b == 0xff)
.next()
.expect("rsplit always returns an element"),
)
.map_err(|_| {
Error::bad_database("Room ID in userroomid_joined is invalid unicode.")
})?,
)
.map_err(|_| Error::bad_database("Room ID in userroomid_joined is invalid."))?)
})
}
/// Returns an iterator over all rooms a user was invited to.
#[tracing::instrument(skip(self))]
pub fn rooms_invited(
&self,
user_id: &UserId,
) -> impl Iterator<Item = Result<(RoomId, Vec<Raw<AnyStrippedStateEvent>>)>> {
let mut prefix = user_id.as_bytes().to_vec();
prefix.push(0xff);
self.userroomid_invitestate.scan_prefix(prefix).map(|r| {
let (key, state) = r?;
let room_id = RoomId::try_from(
utils::string_from_bytes(
&key.rsplit(|&b| b == 0xff)
.next()
.expect("rsplit always returns an element"),
)
.map_err(|_| {
Error::bad_database("Room ID in userroomid_invited is invalid unicode.")
})?,
)
.map_err(|_| Error::bad_database("Room ID in userroomid_invited is invalid."))?;
let state = serde_json::from_slice(&state)
.map_err(|_| Error::bad_database("Invalid state in userroomid_invitestate."))?;
Ok((room_id, state))
})
}
#[tracing::instrument(skip(self))]
pub fn invite_state(
&self,
user_id: &UserId,
room_id: &RoomId,
) -> Result<Option<Vec<Raw<AnyStrippedStateEvent>>>> {
let mut key = user_id.as_bytes().to_vec();
key.push(0xff);
key.extend_from_slice(&room_id.as_bytes());
self.userroomid_invitestate
.get(key)?
.map(|state| {
let state = serde_json::from_slice(&state)
.map_err(|_| Error::bad_database("Invalid state in userroomid_invitestate."))?;
Ok(state)
})
.transpose()
}
#[tracing::instrument(skip(self))]
pub fn left_state(
&self,
user_id: &UserId,
room_id: &RoomId,
) -> Result<Option<Vec<Raw<AnyStrippedStateEvent>>>> {
let mut key = user_id.as_bytes().to_vec();
key.push(0xff);
key.extend_from_slice(&room_id.as_bytes());
self.userroomid_leftstate
.get(key)?
.map(|state| {
let state = serde_json::from_slice(&state)
.map_err(|_| Error::bad_database("Invalid state in userroomid_leftstate."))?;
Ok(state)
})
.transpose()
}
/// Returns an iterator over all rooms a user left.
#[tracing::instrument(skip(self))]
pub fn rooms_left(
&self,
user_id: &UserId,
) -> impl Iterator<Item = Result<(RoomId, Vec<Raw<AnySyncStateEvent>>)>> {
let mut prefix = user_id.as_bytes().to_vec();
prefix.push(0xff);
self.userroomid_leftstate.scan_prefix(prefix).map(|r| {
let (key, state) = r?;
let room_id = RoomId::try_from(
utils::string_from_bytes(
&key.rsplit(|&b| b == 0xff)
.next()
.expect("rsplit always returns an element"),
)
.map_err(|_| {
Error::bad_database("Room ID in userroomid_invited is invalid unicode.")
})?,
)
.map_err(|_| Error::bad_database("Room ID in userroomid_invited is invalid."))?;
let state = serde_json::from_slice(&state)
.map_err(|_| Error::bad_database("Invalid state in userroomid_leftstate."))?;
Ok((room_id, state))
})
}
pub fn once_joined(&self, user_id: &UserId, room_id: &RoomId) -> Result<bool> {
let mut userroom_id = user_id.as_bytes().to_vec();
userroom_id.push(0xff);
userroom_id.extend_from_slice(room_id.as_bytes());
Ok(self.roomuseroncejoinedids.get(userroom_id)?.is_some())
}
pub fn is_joined(&self, user_id: &UserId, room_id: &RoomId) -> Result<bool> {
let mut userroom_id = user_id.as_bytes().to_vec();
userroom_id.push(0xff);
userroom_id.extend_from_slice(room_id.as_bytes());
Ok(self.userroomid_joined.get(userroom_id)?.is_some())
}
pub fn is_invited(&self, user_id: &UserId, room_id: &RoomId) -> Result<bool> {
let mut userroom_id = user_id.as_bytes().to_vec();
userroom_id.push(0xff);
userroom_id.extend_from_slice(room_id.as_bytes());
Ok(self.userroomid_invitestate.get(userroom_id)?.is_some())
}
pub fn is_left(&self, user_id: &UserId, room_id: &RoomId) -> Result<bool> {
let mut userroom_id = user_id.as_bytes().to_vec();
userroom_id.push(0xff);
userroom_id.extend_from_slice(room_id.as_bytes());
Ok(self.userroomid_leftstate.get(userroom_id)?.is_some())
}
}
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