706 lines
28 KiB
Rust
706 lines
28 KiB
Rust
use super::State;
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use crate::{ConduitResult, Database, Error, Ruma};
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use ruma::{
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api::client::r0::sync::sync_events,
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events::{room::member::MembershipState, AnySyncEphemeralRoomEvent, EventType},
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serde::Raw,
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RoomId, UserId,
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};
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#[cfg(feature = "conduit_bin")]
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use rocket::{get, tokio};
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use std::{
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collections::{hash_map, BTreeMap, HashMap, HashSet},
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convert::TryFrom,
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time::Duration,
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};
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/// # `GET /_matrix/client/r0/sync`
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///
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/// Synchronize the client's state with the latest state on the server.
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///
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/// - This endpoint takes a `since` parameter which should be the `next_batch` value from a
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/// previous request.
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/// - Calling this endpoint without a `since` parameter will return all recent events, the state
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/// of all rooms and more data. This should only be called on the initial login of the device.
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/// - To get incremental updates, you can call this endpoint with a `since` parameter. This will
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/// return all recent events, state updates and more data that happened since the last /sync
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/// request.
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#[cfg_attr(
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feature = "conduit_bin",
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get("/_matrix/client/r0/sync", data = "<body>")
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)]
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pub async fn sync_events_route(
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db: State<'_, Database>,
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body: Ruma<sync_events::Request<'_>>,
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) -> ConduitResult<sync_events::Response> {
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let sender_user = body.sender_user.as_ref().expect("user is authenticated");
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let sender_device = body.sender_device.as_ref().expect("user is authenticated");
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// TODO: match body.set_presence {
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db.rooms.edus.ping_presence(&sender_user)?;
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// Setup watchers, so if there's no response, we can wait for them
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let watcher = db.watch(sender_user, sender_device);
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let next_batch = db.globals.current_count()?.to_string();
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let mut joined_rooms = BTreeMap::new();
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let since = body
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.since
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.clone()
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.and_then(|string| string.parse().ok())
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.unwrap_or(0);
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let mut presence_updates = HashMap::new();
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let mut left_encrypted_users = HashSet::new(); // Users that have left any encrypted rooms the sender was in
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let mut device_list_updates = HashSet::new();
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let mut device_list_left = HashSet::new();
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// Look for device list updates of this account
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device_list_updates.extend(
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db.users
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.keys_changed(&sender_user.to_string(), since, None)
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.filter_map(|r| r.ok()),
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);
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for room_id in db.rooms.rooms_joined(&sender_user) {
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let room_id = room_id?;
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let mut non_timeline_pdus = db
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.rooms
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.pdus_since(&sender_user, &room_id, since)?
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.filter_map(|r| r.ok()); // Filter out buggy events
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// Take the last 10 events for the timeline
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let timeline_pdus = non_timeline_pdus
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.by_ref()
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.rev()
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.take(10)
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.collect::<Vec<_>>()
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.into_iter()
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.rev()
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.collect::<Vec<_>>();
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let send_notification_counts = !timeline_pdus.is_empty()
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|| db
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.rooms
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.edus
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.last_privateread_update(&sender_user, &room_id)?
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> since;
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// They /sync response doesn't always return all messages, so we say the output is
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// limited unless there are events in non_timeline_pdus
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let limited = non_timeline_pdus.next().is_some();
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// Database queries:
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let current_state = db.rooms.room_state_full(&room_id)?;
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let current_members = current_state
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.iter()
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.filter(|(key, _)| key.0 == EventType::RoomMember)
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.map(|(key, value)| (&key.1, value)) // Only keep state key
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.collect::<Vec<_>>();
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let encrypted_room = current_state
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.get(&(EventType::RoomEncryption, "".to_owned()))
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.is_some();
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// These type is Option<Option<_>>. The outer Option is None when there is no event between
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// since and the current room state, meaning there should be no updates.
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// The inner Option is None when there is an event, but there is no state hash associated
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// with it. This can happen for the RoomCreate event, so all updates should arrive.
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let first_pdu_after_since = db.rooms.pdus_after(sender_user, &room_id, since).next();
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let since_state_hash = first_pdu_after_since
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.as_ref()
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.map(|pdu| db.rooms.pdu_state_hash(&pdu.as_ref().ok()?.0).ok()?);
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let since_state = since_state_hash.as_ref().map(|state_hash| {
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state_hash
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.as_ref()
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.and_then(|state_hash| db.rooms.state_full(&room_id, &state_hash).ok())
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});
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let since_encryption = since_state.as_ref().map(|state| {
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state
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.as_ref()
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.map(|state| state.get(&(EventType::RoomEncryption, "".to_owned())))
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});
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// Calculations:
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let new_encrypted_room =
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encrypted_room && since_encryption.map_or(false, |encryption| encryption.is_none());
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let send_member_count = since_state.as_ref().map_or(false, |since_state| {
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since_state.as_ref().map_or(true, |since_state| {
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current_members.len()
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!= since_state
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.iter()
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.filter(|(key, _)| key.0 == EventType::RoomMember)
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.count()
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})
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});
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let since_sender_member = since_state.as_ref().map(|since_state| {
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since_state.as_ref().and_then(|state| {
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state
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.get(&(EventType::RoomMember, sender_user.as_str().to_owned()))
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.and_then(|pdu| {
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serde_json::from_value::<
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Raw<ruma::events::room::member::MemberEventContent>,
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>(pdu.content.clone())
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.expect("Raw::from_value always works")
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.deserialize()
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.map_err(|_| Error::bad_database("Invalid PDU in database."))
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.ok()
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})
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})
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});
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if encrypted_room {
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for (user_id, current_member) in current_members {
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let current_membership = serde_json::from_value::<
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Raw<ruma::events::room::member::MemberEventContent>,
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>(current_member.content.clone())
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.expect("Raw::from_value always works")
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.deserialize()
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.map_err(|_| Error::bad_database("Invalid PDU in database."))?
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.membership;
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let since_membership =
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since_state
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.as_ref()
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.map_or(MembershipState::Join, |since_state| {
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since_state
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.as_ref()
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.and_then(|since_state| {
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since_state
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.get(&(EventType::RoomMember, user_id.clone()))
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.and_then(|since_member| {
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serde_json::from_value::<
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Raw<ruma::events::room::member::MemberEventContent>,
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>(
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since_member.content.clone()
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)
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.expect("Raw::from_value always works")
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.deserialize()
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.map_err(|_| {
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Error::bad_database("Invalid PDU in database.")
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})
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.ok()
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})
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})
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.map_or(MembershipState::Leave, |member| member.membership)
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});
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let user_id = UserId::try_from(user_id.clone())
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.map_err(|_| Error::bad_database("Invalid UserId in member PDU."))?;
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match (since_membership, current_membership) {
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(MembershipState::Leave, MembershipState::Join) => {
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// A new user joined an encrypted room
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if !share_encrypted_room(&db, &sender_user, &user_id, &room_id) {
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device_list_updates.insert(user_id);
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}
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}
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(MembershipState::Join, MembershipState::Leave) => {
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// Write down users that have left encrypted rooms we are in
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left_encrypted_users.insert(user_id);
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}
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_ => {}
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}
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}
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}
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let joined_since_last_sync = since_sender_member.map_or(false, |member| {
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member.map_or(true, |member| member.membership != MembershipState::Join)
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});
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if joined_since_last_sync && encrypted_room || new_encrypted_room {
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// If the user is in a new encrypted room, give them all joined users
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device_list_updates.extend(
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db.rooms
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.room_members(&room_id)
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.filter_map(|user_id| Some(user_id.ok()?))
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.filter(|user_id| {
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// Don't send key updates from the sender to the sender
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sender_user != user_id
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})
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.filter(|user_id| {
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// Only send keys if the sender doesn't share an encrypted room with the target already
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!share_encrypted_room(&db, sender_user, user_id, &room_id)
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}),
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);
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}
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// Look for device list updates in this room
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device_list_updates.extend(
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db.users
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.keys_changed(&room_id.to_string(), since, None)
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.filter_map(|r| r.ok()),
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);
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let (joined_member_count, invited_member_count, heroes) = if send_member_count {
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let joined_member_count = db.rooms.room_members(&room_id).count();
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let invited_member_count = db.rooms.room_members_invited(&room_id).count();
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// Recalculate heroes (first 5 members)
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let mut heroes = Vec::new();
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if joined_member_count + invited_member_count <= 5 {
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// Go through all PDUs and for each member event, check if the user is still joined or
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// invited until we have 5 or we reach the end
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for hero in db
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.rooms
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.all_pdus(&sender_user, &room_id)?
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.filter_map(|pdu| pdu.ok()) // Ignore all broken pdus
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.filter(|(_, pdu)| pdu.kind == EventType::RoomMember)
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.map(|(_, pdu)| {
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let content = serde_json::from_value::<
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Raw<ruma::events::room::member::MemberEventContent>,
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>(pdu.content.clone())
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.expect("Raw::from_value always works")
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.deserialize()
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.map_err(|_| Error::bad_database("Invalid member event in database."))?;
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if let Some(state_key) = &pdu.state_key {
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let user_id = UserId::try_from(state_key.clone()).map_err(|_| {
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Error::bad_database("Invalid UserId in member PDU.")
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})?;
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// The membership was and still is invite or join
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if matches!(
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content.membership,
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MembershipState::Join | MembershipState::Invite
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) && (db.rooms.is_joined(&user_id, &room_id)?
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|| db.rooms.is_invited(&user_id, &room_id)?)
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{
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Ok::<_, Error>(Some(state_key.clone()))
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} else {
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Ok(None)
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}
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} else {
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Ok(None)
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}
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})
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.filter_map(|u| u.ok()) // Filter out buggy users
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// Filter for possible heroes
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.filter_map(|u| u)
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{
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if heroes.contains(&hero) || hero == sender_user.as_str() {
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continue;
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}
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heroes.push(hero);
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}
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}
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(
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Some(joined_member_count),
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Some(invited_member_count),
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heroes,
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)
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} else {
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(None, None, Vec::new())
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};
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let notification_count = if send_notification_counts {
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if let Some(last_read) = db.rooms.edus.private_read_get(&room_id, &sender_user)? {
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Some(
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(db.rooms
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.pdus_since(&sender_user, &room_id, last_read)?
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.filter_map(|pdu| pdu.ok()) // Filter out buggy events
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.filter(|(_, pdu)| {
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matches!(
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pdu.kind.clone(),
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EventType::RoomMessage | EventType::RoomEncrypted
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)
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})
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.count() as u32)
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.into(),
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)
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} else {
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None
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}
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} else {
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None
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};
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let prev_batch = timeline_pdus
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.first()
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.map_or(Ok::<_, Error>(None), |(pdu_id, _)| {
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Ok(Some(db.rooms.pdu_count(pdu_id)?.to_string()))
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})?;
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let room_events = timeline_pdus
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.iter()
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.map(|(_, pdu)| pdu.to_sync_room_event())
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.collect::<Vec<_>>();
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let mut edus = db
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.rooms
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.edus
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.readreceipts_since(&room_id, since)?
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.filter_map(|r| r.ok()) // Filter out buggy events
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.collect::<Vec<_>>();
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if db.rooms.edus.last_typing_update(&room_id, &db.globals)? > since {
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edus.push(
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serde_json::from_str(
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&serde_json::to_string(&AnySyncEphemeralRoomEvent::Typing(
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db.rooms.edus.typings_all(&room_id)?,
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))
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.expect("event is valid, we just created it"),
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)
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.expect("event is valid, we just created it"),
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);
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}
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let joined_room = sync_events::JoinedRoom {
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account_data: sync_events::AccountData {
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events: db
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.account_data
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.changes_since(Some(&room_id), &sender_user, since)?
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.into_iter()
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.filter_map(|(_, v)| {
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serde_json::from_str(v.json().get())
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.map_err(|_| Error::bad_database("Invalid account event in database."))
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.ok()
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})
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.collect::<Vec<_>>(),
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},
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summary: sync_events::RoomSummary {
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heroes,
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joined_member_count: joined_member_count.map(|n| (n as u32).into()),
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invited_member_count: invited_member_count.map(|n| (n as u32).into()),
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},
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unread_notifications: sync_events::UnreadNotificationsCount {
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highlight_count: None,
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notification_count,
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},
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timeline: sync_events::Timeline {
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limited: limited || joined_since_last_sync,
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prev_batch,
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events: room_events,
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},
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state: sync_events::State {
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events: if joined_since_last_sync {
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db.rooms
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.room_state_full(&room_id)?
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.into_iter()
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.map(|(_, pdu)| pdu.to_sync_state_event())
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.collect()
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} else {
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match since_state {
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None => Vec::new(),
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Some(Some(since_state)) => current_state
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.iter()
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.filter(|(key, value)| {
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since_state.get(key).map(|e| &e.event_id) != Some(&value.event_id)
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})
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.filter(|(_, value)| {
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!timeline_pdus.iter().any(|(_, timeline_pdu)| {
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timeline_pdu.kind == value.kind
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&& timeline_pdu.state_key == value.state_key
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})
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})
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.map(|(_, pdu)| pdu.to_sync_state_event())
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.collect(),
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Some(None) => current_state
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.iter()
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.map(|(_, pdu)| pdu.to_sync_state_event())
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.collect(),
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}
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},
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},
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ephemeral: sync_events::Ephemeral { events: edus },
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};
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if !joined_room.is_empty() {
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joined_rooms.insert(room_id.clone(), joined_room);
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}
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// Take presence updates from this room
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for (user_id, presence) in
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db.rooms
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.edus
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.presence_since(&room_id, since, &db.rooms, &db.globals)?
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{
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match presence_updates.entry(user_id) {
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hash_map::Entry::Vacant(v) => {
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v.insert(presence);
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}
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hash_map::Entry::Occupied(mut o) => {
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let p = o.get_mut();
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// Update existing presence event with more info
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p.content.presence = presence.content.presence;
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if let Some(status_msg) = presence.content.status_msg {
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p.content.status_msg = Some(status_msg);
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}
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if let Some(last_active_ago) = presence.content.last_active_ago {
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p.content.last_active_ago = Some(last_active_ago);
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}
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if let Some(displayname) = presence.content.displayname {
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p.content.displayname = Some(displayname);
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}
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if let Some(avatar_url) = presence.content.avatar_url {
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p.content.avatar_url = Some(avatar_url);
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}
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if let Some(currently_active) = presence.content.currently_active {
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p.content.currently_active = Some(currently_active);
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}
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}
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}
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}
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}
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let mut left_rooms = BTreeMap::new();
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for room_id in db.rooms.rooms_left(&sender_user) {
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let room_id = room_id?;
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let since_member = if let Some(since_member) = db
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.rooms
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.pdus_after(sender_user, &room_id, since)
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.next()
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.and_then(|pdu| pdu.ok())
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.and_then(|pdu| {
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db.rooms
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.pdu_state_hash(&pdu.0)
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.ok()?
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.ok_or_else(|| Error::bad_database("Pdu in db doesn't have a state hash."))
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.ok()
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})
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.and_then(|state_hash| {
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db.rooms
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.state_get(
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&room_id,
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&state_hash,
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&EventType::RoomMember,
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sender_user.as_str(),
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)
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.ok()?
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.ok_or_else(|| Error::bad_database("State hash in db doesn't have a state."))
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.ok()
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})
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.and_then(|(pdu_id, pdu)| {
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serde_json::from_value::<Raw<ruma::events::room::member::MemberEventContent>>(
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pdu.content.clone(),
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)
|
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.expect("Raw::from_value always works")
|
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.deserialize()
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.map_err(|_| Error::bad_database("Invalid PDU in database."))
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.map(|content| (pdu_id, pdu, content))
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.ok()
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}) {
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|
since_member
|
|
} else {
|
|
// We couldn't find the since_member event. This is very weird - we better abort
|
|
continue;
|
|
};
|
|
|
|
let left_since_last_sync = since_member.2.membership == MembershipState::Join;
|
|
|
|
let left_room = if left_since_last_sync {
|
|
device_list_left.extend(
|
|
db.rooms
|
|
.room_members(&room_id)
|
|
.filter_map(|user_id| Some(user_id.ok()?))
|
|
.filter(|user_id| {
|
|
// Don't send key updates from the sender to the sender
|
|
sender_user != user_id
|
|
})
|
|
.filter(|user_id| {
|
|
// Only send if the sender doesn't share any encrypted room with the target
|
|
// anymore
|
|
!share_encrypted_room(&db, sender_user, user_id, &room_id)
|
|
}),
|
|
);
|
|
|
|
let pdus = db.rooms.pdus_since(&sender_user, &room_id, since)?;
|
|
let mut room_events = pdus
|
|
.filter_map(|pdu| pdu.ok()) // Filter out buggy events
|
|
.take_while(|(pdu_id, _)| since_member.0 != pdu_id)
|
|
.map(|(_, pdu)| pdu.to_sync_room_event())
|
|
.collect::<Vec<_>>();
|
|
room_events.push(since_member.1.to_sync_room_event());
|
|
|
|
sync_events::LeftRoom {
|
|
account_data: sync_events::AccountData { events: Vec::new() },
|
|
timeline: sync_events::Timeline {
|
|
limited: false,
|
|
prev_batch: Some(next_batch.clone()),
|
|
events: room_events,
|
|
},
|
|
state: sync_events::State { events: Vec::new() },
|
|
}
|
|
} else {
|
|
sync_events::LeftRoom {
|
|
account_data: sync_events::AccountData { events: Vec::new() },
|
|
timeline: sync_events::Timeline {
|
|
limited: false,
|
|
prev_batch: Some(next_batch.clone()),
|
|
events: Vec::new(),
|
|
},
|
|
state: sync_events::State { events: Vec::new() },
|
|
}
|
|
};
|
|
|
|
if !left_room.is_empty() {
|
|
left_rooms.insert(room_id.clone(), left_room);
|
|
}
|
|
}
|
|
|
|
let mut invited_rooms = BTreeMap::new();
|
|
for room_id in db.rooms.rooms_invited(&sender_user) {
|
|
let room_id = room_id?;
|
|
let mut invited_since_last_sync = false;
|
|
for pdu in db.rooms.pdus_since(&sender_user, &room_id, since)? {
|
|
let (_, pdu) = pdu?;
|
|
if pdu.kind == EventType::RoomMember && pdu.state_key == Some(sender_user.to_string()) {
|
|
let content = serde_json::from_value::<
|
|
Raw<ruma::events::room::member::MemberEventContent>,
|
|
>(pdu.content.clone())
|
|
.expect("Raw::from_value always works")
|
|
.deserialize()
|
|
.map_err(|_| Error::bad_database("Invalid PDU in database."))?;
|
|
|
|
if content.membership == MembershipState::Invite {
|
|
invited_since_last_sync = true;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if !invited_since_last_sync {
|
|
continue;
|
|
}
|
|
|
|
let invited_room = sync_events::InvitedRoom {
|
|
invite_state: sync_events::InviteState {
|
|
events: db
|
|
.rooms
|
|
.room_state_full(&room_id)?
|
|
.into_iter()
|
|
.map(|(_, pdu)| pdu.to_stripped_state_event())
|
|
.collect(),
|
|
},
|
|
};
|
|
|
|
if !invited_room.is_empty() {
|
|
invited_rooms.insert(room_id.clone(), invited_room);
|
|
}
|
|
}
|
|
|
|
for user_id in left_encrypted_users {
|
|
let still_share_encrypted_room = db
|
|
.rooms
|
|
.get_shared_rooms(vec![sender_user.clone(), user_id.clone()])
|
|
.filter_map(|r| r.ok())
|
|
.filter_map(|other_room_id| {
|
|
Some(
|
|
db.rooms
|
|
.room_state_get(&other_room_id, &EventType::RoomEncryption, "")
|
|
.ok()?
|
|
.is_some(),
|
|
)
|
|
})
|
|
.all(|encrypted| !encrypted);
|
|
// If the user doesn't share an encrypted room with the target anymore, we need to tell
|
|
// them
|
|
if still_share_encrypted_room {
|
|
device_list_left.insert(user_id);
|
|
}
|
|
}
|
|
|
|
// Remove all to-device events the device received *last time*
|
|
db.users
|
|
.remove_to_device_events(sender_user, sender_device, since)?;
|
|
|
|
let response = sync_events::Response {
|
|
next_batch,
|
|
rooms: sync_events::Rooms {
|
|
leave: left_rooms,
|
|
join: joined_rooms,
|
|
invite: invited_rooms,
|
|
},
|
|
presence: sync_events::Presence {
|
|
events: presence_updates
|
|
.into_iter()
|
|
.map(|(_, v)| Raw::from(v))
|
|
.collect(),
|
|
},
|
|
account_data: sync_events::AccountData {
|
|
events: db
|
|
.account_data
|
|
.changes_since(None, &sender_user, since)?
|
|
.into_iter()
|
|
.filter_map(|(_, v)| {
|
|
serde_json::from_str(v.json().get())
|
|
.map_err(|_| Error::bad_database("Invalid account event in database."))
|
|
.ok()
|
|
})
|
|
.collect::<Vec<_>>(),
|
|
},
|
|
device_lists: sync_events::DeviceLists {
|
|
changed: device_list_updates.into_iter().collect(),
|
|
left: device_list_left.into_iter().collect(),
|
|
},
|
|
device_one_time_keys_count: if db.users.last_one_time_keys_update(sender_user)? > since
|
|
|| since == 0
|
|
{
|
|
db.users.count_one_time_keys(sender_user, sender_device)?
|
|
} else {
|
|
BTreeMap::new()
|
|
},
|
|
to_device: sync_events::ToDevice {
|
|
events: db.users.get_to_device_events(sender_user, sender_device)?,
|
|
},
|
|
};
|
|
|
|
// TODO: Retry the endpoint instead of returning (waiting for #118)
|
|
if !body.full_state
|
|
&& response.rooms.is_empty()
|
|
&& response.presence.is_empty()
|
|
&& response.account_data.is_empty()
|
|
&& response.device_lists.is_empty()
|
|
&& response.device_one_time_keys_count.is_empty()
|
|
&& response.to_device.is_empty()
|
|
{
|
|
// Hang a few seconds so requests are not spammed
|
|
// Stop hanging if new info arrives
|
|
let mut duration = body.timeout.unwrap_or_default();
|
|
if duration.as_secs() > 30 {
|
|
duration = Duration::from_secs(30);
|
|
}
|
|
let mut delay = tokio::time::delay_for(duration);
|
|
tokio::select! {
|
|
_ = &mut delay => {}
|
|
_ = watcher => {}
|
|
}
|
|
}
|
|
|
|
Ok(response.into())
|
|
}
|
|
|
|
fn share_encrypted_room(
|
|
db: &Database,
|
|
sender_user: &UserId,
|
|
user_id: &UserId,
|
|
ignore_room: &RoomId,
|
|
) -> bool {
|
|
db.rooms
|
|
.get_shared_rooms(vec![sender_user.clone(), user_id.clone()])
|
|
.filter_map(|r| r.ok())
|
|
.filter(|room_id| room_id != ignore_room)
|
|
.filter_map(|other_room_id| {
|
|
Some(
|
|
db.rooms
|
|
.room_state_get(&other_room_id, &EventType::RoomEncryption, "")
|
|
.ok()?
|
|
.is_some(),
|
|
)
|
|
})
|
|
.any(|encrypted| encrypted)
|
|
}
|