improvement: maybe cross signing really works now

src/api/client_server/keys.rs

@@ -132,6 +132,7 @@ pub async fn upload_signing_keys_route(
             master_key,
             &body.self_signing_key,
             &body.user_signing_key,
+            true, // notify so that other users see the new keys
         )?;
     }
 
@@ -375,6 +376,10 @@ pub(crate) async fn get_keys_helper<F: Fn(&UserId) -> bool>(
                     }
                     let json = serde_json::to_value(master_key).expect("to_value always works");
                     let raw = serde_json::from_value(json).expect("Raw::from_value always works");
+                    services().users.add_cross_signing_keys(
+                        &user, &raw, &None, &None,
+                        false, // Dont notify. A notification would trigger another key request resulting in an endless loop
+                    )?;
                     master_keys.insert(user, raw);
                 }
 

src/api/client_server/sync.rs

@@ -20,9 +20,8 @@ use ruma::{
         StateEventType, TimelineEventType,
     },
     serde::Raw,
-    uint, DeviceId, OwnedDeviceId, OwnedEventId, OwnedUserId, RoomId, UInt, UserId,
+    uint, DeviceId, OwnedDeviceId, OwnedUserId, RoomId, UInt, UserId,
 };
-use serde::Deserialize;
 use std::{
     collections::{hash_map::Entry, BTreeMap, BTreeSet, HashMap, HashSet},
     sync::Arc,

src/api/server_server.rs

@@ -55,7 +55,7 @@ use std::{
     time::{Duration, Instant, SystemTime},
 };
 
-use tracing::{debug, error, info, warn};
+use tracing::{debug, error, warn};
 
 /// Wraps either an literal IP address plus port, or a hostname plus complement
 /// (colon-plus-port if it was specified).
@@ -917,6 +917,7 @@ pub async fn send_transaction_message_route(
                         &master_key,
                         &self_signing_key,
                         &None,
+                        true,
                     )?;
                 }
             }

src/database/key_value/users.rs

@@ -449,6 +449,7 @@ impl service::users::Data for KeyValueDatabase {
         master_key: &Raw<CrossSigningKey>,
         self_signing_key: &Option<Raw<CrossSigningKey>>,
         user_signing_key: &Option<Raw<CrossSigningKey>>,
+        notify: bool,
     ) -> Result<()> {
         // TODO: Check signatures
         let mut prefix = user_id.as_bytes().to_vec();
@@ -530,7 +531,9 @@ impl service::users::Data for KeyValueDatabase {
                 .insert(user_id.as_bytes(), &user_signing_key_key)?;
         }
 
-        self.mark_device_key_update(user_id)?;
+        if notify {
+            self.mark_device_key_update(user_id)?;
+        }
 
         Ok(())
     }

src/service/rooms/state_cache/mod.rs

@@ -14,6 +14,7 @@ use ruma::{
     serde::Raw,
     OwnedRoomId, OwnedServerName, OwnedUserId, RoomId, ServerName, UserId,
 };
+use tracing::warn;
 
 use crate::{services, Error, Result};
 
@@ -88,8 +89,9 @@ impl Service {
                                 RoomAccountDataEventType::Tag,
                             )?
                             .map(|event| {
-                                serde_json::from_str(event.get()).map_err(|_| {
-                                    Error::bad_database("Invalid account data event in db.")
+                                serde_json::from_str(event.get()).map_err(|e| {
+                                    warn!("Invalid account data event in db: {e:?}");
+                                    Error::BadDatabase("Invalid account data event in db.")
                                 })
                             })
                         {
@@ -113,8 +115,9 @@ impl Service {
                                 GlobalAccountDataEventType::Direct.to_string().into(),
                             )?
                             .map(|event| {
-                                serde_json::from_str::<DirectEvent>(event.get()).map_err(|_| {
-                                    Error::bad_database("Invalid account data event in db.")
+                                serde_json::from_str::<DirectEvent>(event.get()).map_err(|e| {
+                                    warn!("Invalid account data event in db: {e:?}");
+                                    Error::BadDatabase("Invalid account data event in db.")
                                 })
                             })
                         {
@@ -155,8 +158,10 @@ impl Service {
                             .into(),
                     )?
                     .map(|event| {
-                        serde_json::from_str::<IgnoredUserListEvent>(event.get())
-                            .map_err(|_| Error::bad_database("Invalid account data event in db."))
+                        serde_json::from_str::<IgnoredUserListEvent>(event.get()).map_err(|e| {
+                            warn!("Invalid account data event in db: {e:?}");
+                            Error::BadDatabase("Invalid account data event in db.")
+                        })
                     })
                     .transpose()?
                     .map_or(false, |ignored| {

src/service/users/data.rs

@@ -111,6 +111,7 @@ pub trait Data: Send + Sync {
         master_key: &Raw<CrossSigningKey>,
         self_signing_key: &Option<Raw<CrossSigningKey>>,
         user_signing_key: &Option<Raw<CrossSigningKey>>,
+        notify: bool,
     ) -> Result<()>;
 
     fn sign_key(

src/service/users/mod.rs

@@ -66,7 +66,7 @@ impl Service {
             return BTreeMap::new();
         };
 
-        let cache = &mut self.connections.lock().unwrap();
+        let mut cache = self.connections.lock().unwrap();
         let cached = Arc::clone(
             cache
                 .entry((user_id, device_id, conn_id))
@@ -185,7 +185,7 @@ impl Service {
         conn_id: String,
         subscriptions: BTreeMap<OwnedRoomId, sync_events::v4::RoomSubscription>,
     ) {
-        let cache = &mut self.connections.lock().unwrap();
+        let mut cache = self.connections.lock().unwrap();
         let cached = Arc::clone(
             cache
                 .entry((user_id, device_id, conn_id))
@@ -212,7 +212,7 @@ impl Service {
         list_id: String,
         new_cached_rooms: BTreeMap<OwnedRoomId, bool>,
     ) {
-        let cache = &mut self.connections.lock().unwrap();
+        let mut cache = self.connections.lock().unwrap();
         let cached = Arc::clone(
             cache
                 .entry((user_id, device_id, conn_id))
@@ -398,9 +398,15 @@ impl Service {
         master_key: &Raw<CrossSigningKey>,
         self_signing_key: &Option<Raw<CrossSigningKey>>,
         user_signing_key: &Option<Raw<CrossSigningKey>>,
+        notify: bool,
     ) -> Result<()> {
-        self.db
-            .add_cross_signing_keys(user_id, master_key, self_signing_key, user_signing_key)
+        self.db.add_cross_signing_keys(
+            user_id,
+            master_key,
+            self_signing_key,
+            user_signing_key,
+            notify,
+        )
     }
 
     pub fn sign_key(