fix: batch key fetching
This commit is contained in:
Timo Kösters
parent
c53d79e287
commit
4b39d7cb64
4 changed files with 147 additions and 146 deletions
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@ -6,7 +6,10 @@ use crate::{
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use get_profile_information::v1::ProfileField;
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use http::header::{HeaderValue, AUTHORIZATION};
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use regex::Regex;
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use rocket::{futures, response::content::Json};
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use rocket::{
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futures::{prelude::*, stream::FuturesUnordered},
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response::content::Json,
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};
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use ruma::{
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api::{
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client::error::{Error as RumaError, ErrorKind},
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@ -61,7 +64,7 @@ use std::{
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net::{IpAddr, SocketAddr},
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pin::Pin,
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result::Result as StdResult,
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sync::{Arc, RwLock},
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sync::{Arc, RwLock, RwLockWriteGuard},
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time::{Duration, Instant, SystemTime},
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};
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use tokio::sync::{MutexGuard, Semaphore};
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@ -3281,101 +3284,96 @@ pub(crate) async fn fetch_required_signing_keys(
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// Gets a list of servers for which we don't have the signing key yet. We go over
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// the PDUs and either cache the key or add it to the list that needs to be retrieved.
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fn get_missing_servers_for_pdus(
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pdus: &Vec<Raw<Pdu>>,
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fn get_server_keys_from_cache(
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pdu: &Raw<Pdu>,
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servers: &mut BTreeMap<Box<ServerName>, BTreeMap<ServerSigningKeyId, QueryCriteria>>,
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room_version: &RoomVersionId,
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pub_key_map: &RwLock<BTreeMap<String, BTreeMap<String, String>>>,
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pub_key_map: &mut RwLockWriteGuard<'_, BTreeMap<String, BTreeMap<String, String>>>,
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db: &Database,
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) -> Result<()> {
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let mut pkm = pub_key_map
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.write()
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.map_err(|_| Error::bad_database("RwLock is poisoned."))?;
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for pdu in pdus {
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let value = serde_json::from_str::<CanonicalJsonObject>(pdu.json().get()).map_err(|e| {
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error!("Invalid PDU in server response: {:?}: {:?}", pdu, e);
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Error::BadServerResponse("Invalid PDU in server response")
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let value = serde_json::from_str::<CanonicalJsonObject>(pdu.json().get()).map_err(|e| {
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error!("Invalid PDU in server response: {:?}: {:?}", pdu, e);
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Error::BadServerResponse("Invalid PDU in server response")
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})?;
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let event_id = EventId::try_from(&*format!(
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"${}",
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ruma::signatures::reference_hash(&value, &room_version)
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.expect("ruma can calculate reference hashes")
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))
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.expect("ruma's reference hashes are valid event ids");
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if let Some((time, tries)) = db
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.globals
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.bad_event_ratelimiter
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.read()
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.unwrap()
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.get(&event_id)
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{
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// Exponential backoff
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let mut min_elapsed_duration = Duration::from_secs(30) * (*tries) * (*tries);
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if min_elapsed_duration > Duration::from_secs(60 * 60 * 24) {
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min_elapsed_duration = Duration::from_secs(60 * 60 * 24);
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}
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if time.elapsed() < min_elapsed_duration {
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debug!("Backing off from {}", event_id);
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return Err(Error::BadServerResponse("bad event, still backing off"));
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}
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}
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let signatures = value
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.get("signatures")
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.ok_or(Error::BadServerResponse(
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"No signatures in server response pdu.",
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))?
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.as_object()
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.ok_or(Error::BadServerResponse(
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"Invalid signatures object in server response pdu.",
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))?;
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for (signature_server, signature) in signatures {
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let signature_object = signature.as_object().ok_or(Error::BadServerResponse(
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"Invalid signatures content object in server response pdu.",
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))?;
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let signature_ids = signature_object.keys().cloned().collect::<Vec<_>>();
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let contains_all_ids =
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|keys: &BTreeMap<String, String>| signature_ids.iter().all(|id| keys.contains_key(id));
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let origin = &Box::<ServerName>::try_from(&**signature_server).map_err(|_| {
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Error::BadServerResponse("Invalid servername in signatures of server response pdu.")
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})?;
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let event_id = EventId::try_from(&*format!(
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"${}",
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ruma::signatures::reference_hash(&value, &room_version)
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.expect("ruma can calculate reference hashes")
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))
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.expect("ruma's reference hashes are valid event ids");
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if let Some((time, tries)) = db
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if servers.contains_key(origin) || pub_key_map.contains_key(origin.as_str()) {
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continue;
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}
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trace!("Loading signing keys for {}", origin);
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let result = db
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.globals
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.bad_event_ratelimiter
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.read()
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.unwrap()
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.get(&event_id)
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{
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// Exponential backoff
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let mut min_elapsed_duration = Duration::from_secs(30) * (*tries) * (*tries);
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if min_elapsed_duration > Duration::from_secs(60 * 60 * 24) {
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min_elapsed_duration = Duration::from_secs(60 * 60 * 24);
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}
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.signing_keys_for(origin)?
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.into_iter()
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.map(|(k, v)| (k.to_string(), v.key))
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.collect::<BTreeMap<_, _>>();
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if time.elapsed() < min_elapsed_duration {
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debug!("Backing off from {}", event_id);
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return Err(Error::BadServerResponse("bad event, still backing off"));
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}
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if !contains_all_ids(&result) {
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trace!("Signing key not loaded for {}", origin);
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servers.insert(
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origin.clone(),
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BTreeMap::<ServerSigningKeyId, QueryCriteria>::new(),
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);
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}
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let signatures = value
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.get("signatures")
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.ok_or(Error::BadServerResponse(
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"No signatures in server response pdu.",
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))?
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.as_object()
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.ok_or(Error::BadServerResponse(
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"Invalid signatures object in server response pdu.",
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))?;
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for (signature_server, signature) in signatures {
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let signature_object = signature.as_object().ok_or(Error::BadServerResponse(
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"Invalid signatures content object in server response pdu.",
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))?;
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let signature_ids = signature_object.keys().cloned().collect::<Vec<_>>();
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let contains_all_ids = |keys: &BTreeMap<String, String>| {
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signature_ids.iter().all(|id| keys.contains_key(id))
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};
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let origin = &Box::<ServerName>::try_from(&**signature_server).map_err(|_| {
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Error::BadServerResponse("Invalid servername in signatures of server response pdu.")
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})?;
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if servers.contains_key(origin) {
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continue;
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}
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trace!("Loading signing keys for {}", origin);
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let result = db
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.globals
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.signing_keys_for(origin)?
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.into_iter()
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.map(|(k, v)| (k.to_string(), v.key))
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.collect::<BTreeMap<_, _>>();
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if !contains_all_ids(&result) {
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trace!("Signing key not loaded for {}", origin);
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servers.insert(
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origin.clone(),
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BTreeMap::<ServerSigningKeyId, QueryCriteria>::new(),
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);
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}
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pkm.insert(origin.to_string(), result);
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}
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pub_key_map.insert(origin.to_string(), result);
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}
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Ok(())
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}
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pub async fn fetch_join_signing_keys(
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pub(crate) async fn fetch_join_signing_keys(
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event: &create_join_event::v2::Response,
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room_version: &RoomVersionId,
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pub_key_map: &RwLock<BTreeMap<String, BTreeMap<String, String>>>,
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@ -3384,32 +3382,26 @@ pub async fn fetch_join_signing_keys(
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let mut servers =
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BTreeMap::<Box<ServerName>, BTreeMap<ServerSigningKeyId, QueryCriteria>>::new();
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get_missing_servers_for_pdus(
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&event.room_state.state,
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&mut servers,
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&room_version,
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&pub_key_map,
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&db,
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)?;
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get_missing_servers_for_pdus(
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&event.room_state.auth_chain,
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&mut servers,
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&room_version,
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&pub_key_map,
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&db,
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)?;
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{
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let mut pkm = pub_key_map
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.write()
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.map_err(|_| Error::bad_database("RwLock is poisoned."))?;
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if servers.is_empty() {
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return Ok(());
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// Try to fetch keys, failure is okay
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// Servers we couldn't find in the cache will be added to `servers`
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for pdu in &event.room_state.state {
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let _ = get_server_keys_from_cache(pdu, &mut servers, &room_version, &mut pkm, &db);
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}
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for pdu in &event.room_state.auth_chain {
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let _ = get_server_keys_from_cache(pdu, &mut servers, &room_version, &mut pkm, &db);
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}
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drop(pkm);
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}
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for server in db.globals.trusted_servers() {
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if db.globals.signing_keys_for(server)?.is_empty() {
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servers.insert(
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server.clone(),
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BTreeMap::<ServerSigningKeyId, QueryCriteria>::new(),
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);
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}
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if servers.is_empty() {
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// We had all keys locally
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return Ok(());
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}
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for server in db.globals.trusted_servers() {
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@ -3434,7 +3426,7 @@ pub async fn fetch_join_signing_keys(
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.write()
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.map_err(|_| Error::bad_database("RwLock is poisoned."))?;
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for k in keys.server_keys {
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// TODO: Check signature
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// TODO: Check signature from trusted server?
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servers.remove(&k.server_name);
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let result = db
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@ -3447,23 +3439,33 @@ pub async fn fetch_join_signing_keys(
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pkm.insert(k.server_name.to_string(), result);
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}
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}
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if servers.is_empty() {
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return Ok(());
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}
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}
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for result in futures::future::join_all(servers.iter().map(|(server, _)| {
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db.sending
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.send_federation_request(&db.globals, server, get_server_keys::v2::Request::new())
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}))
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.await
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{
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if let Ok(get_keys_response) = result {
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// TODO: We should probably not trust the server_name in the response.
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let server = &get_keys_response.server_key.server_name;
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let mut futures = servers
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.into_iter()
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.map(|(server, _)| async move {
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(
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db.sending
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.send_federation_request(
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&db.globals,
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&server,
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get_server_keys::v2::Request::new(),
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)
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.await,
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server,
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)
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})
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.collect::<FuturesUnordered<_>>();
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while let Some(result) = futures.next().await {
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if let (Ok(get_keys_response), origin) = result {
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let result = db
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.globals
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.add_signing_key(server, get_keys_response.server_key.clone())?
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.add_signing_key(&origin, get_keys_response.server_key.clone())?
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.into_iter()
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.map(|(k, v)| (k.to_string(), v.key))
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.collect::<BTreeMap<_, _>>();
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@ -3471,7 +3473,7 @@ pub async fn fetch_join_signing_keys(
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pub_key_map
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.write()
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.map_err(|_| Error::bad_database("RwLock is poisoned."))?
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.insert(server.to_string(), result);
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.insert(origin.to_string(), result);
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}
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}
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