Merge branch 'master' of ssh://github.com/Nheko-Reborn/nheko

CMakeLists.txt

@@ -361,7 +361,7 @@ if(USE_BUNDLED_MTXCLIENT)
 	FetchContent_Declare(
 		MatrixClient
 		GIT_REPOSITORY https://github.com/Nheko-Reborn/mtxclient.git
-		GIT_TAG        808605299937203696a572c585a51509b1de28cf
+		GIT_TAG        5b7654c5d4512abc38806a0f44efc199029ceef4
 		)
 	set(BUILD_LIB_EXAMPLES OFF CACHE INTERNAL "")
 	set(BUILD_LIB_TESTS OFF CACHE INTERNAL "")

io.github.NhekoReborn.Nheko.yaml

@@ -148,7 +148,7 @@ modules:
     buildsystem: cmake-ninja
     name: mtxclient
     sources:
-      - commit: 7194b4f058406b1c10d3741d83abcf2d8963d849
+      - commit: 5b7654c5d4512abc38806a0f44efc199029ceef4
         type: git
         url: https://github.com/Nheko-Reborn/mtxclient.git
   - config-opts:

src/Cache.cpp

@@ -1182,10 +1182,13 @@ Cache::saveState(const mtx::responses::Sync &res)
         // Save joined rooms
         for (const auto &room : res.rooms.join) {
                 auto statesdb    = getStatesDb(txn, room.first);
+                auto stateskeydb = getStatesKeyDb(txn, room.first);
                 auto membersdb   = getMembersDb(txn, room.first);
 
-                saveStateEvents(txn, statesdb, membersdb, room.first, room.second.state.events);
-                saveStateEvents(txn, statesdb, membersdb, room.first, room.second.timeline.events);
+                saveStateEvents(
+                  txn, statesdb, stateskeydb, membersdb, room.first, room.second.state.events);
+                saveStateEvents(
+                  txn, statesdb, stateskeydb, membersdb, room.first, room.second.timeline.events);
 
                 saveTimelineMessages(txn, room.first, room.second.timeline);
 

src/Cache_p.h

@@ -273,6 +273,18 @@ public:
                 return false;
         }
 
+        static int compare_state_key(const MDB_val *a, const MDB_val *b)
+        {
+                auto get_skey = [](const MDB_val *v) {
+                        return nlohmann::json::parse(
+                                 std::string_view(static_cast<const char *>(v->mv_data),
+                                                  v->mv_size))
+                          .value("key", "");
+                };
+
+                return get_skey(a).compare(get_skey(b));
+        }
+
 signals:
         void newReadReceipts(const QString &room_id, const std::vector<QString> &event_ids);
         void roomReadStatus(const std::map<QString, bool> &status);
@@ -323,17 +335,19 @@ private:
         template<class T>
         void saveStateEvents(lmdb::txn &txn,
                              lmdb::dbi &statesdb,
+                             lmdb::dbi &stateskeydb,
                              lmdb::dbi &membersdb,
                              const std::string &room_id,
                              const std::vector<T> &events)
         {
                 for (const auto &e : events)
-                        saveStateEvent(txn, statesdb, membersdb, room_id, e);
+                        saveStateEvent(txn, statesdb, stateskeydb, membersdb, room_id, e);
         }
 
         template<class T>
         void saveStateEvent(lmdb::txn &txn,
                             lmdb::dbi &statesdb,
+                            lmdb::dbi &stateskeydb,
                             lmdb::dbi &membersdb,
                             const std::string &room_id,
                             const T &event)
@@ -371,9 +385,22 @@ private:
                 }
 
                 std::visit(
-                  [&txn, &statesdb](auto e) {
-                          if (isStateEvent(e) && e.type != EventType::Unsupported)
-                                  statesdb.put(txn, to_string(e.type), json(e).dump());
+                  [&txn, &statesdb, &stateskeydb](auto e) {
+                          if constexpr (isStateEvent(e))
+                                  if (e.type != EventType::Unsupported) {
+                                          if (e.state_key.empty())
+                                                  statesdb.put(
+                                                    txn, to_string(e.type), json(e).dump());
+                                          else
+                                                  stateskeydb.put(
+                                                    txn,
+                                                    to_string(e.type),
+                                                    json::object({
+                                                                   {"key", e.state_key},
+                                                                   {"id", e.event_id},
+                                                                 })
+                                                      .dump());
+                                  }
                   },
                   event);
         }
@@ -461,6 +488,14 @@ private:
                 return lmdb::dbi::open(txn, std::string(room_id + "/state").c_str(), MDB_CREATE);
         }
 
+        lmdb::dbi getStatesKeyDb(lmdb::txn &txn, const std::string &room_id)
+        {
+                auto db =
+                  lmdb::dbi::open(txn, std::string(room_id + "/state_by_key").c_str(), MDB_CREATE);
+                lmdb::dbi_set_dupsort(txn, db, compare_state_key);
+                return db;
+        }
+
         lmdb::dbi getAccountDataDb(lmdb::txn &txn, const std::string &room_id)
         {
                 return lmdb::dbi::open(

src/Olm.cpp

@@ -359,6 +359,26 @@ handle_olm_message(const OlmMessage &msg)
                         return;
                 }
         }
+
+        try {
+                auto otherUserDeviceKeys = cache::userKeys(msg.sender);
+
+                if (!otherUserDeviceKeys)
+                        return;
+
+                std::map<std::string, std::vector<std::string>> targets;
+                for (auto [device_id, key] : otherUserDeviceKeys->device_keys) {
+                        if (key.keys.at("curve25519:" + device_id) == msg.sender_key)
+                                targets[msg.sender].push_back(device_id);
+                }
+
+                send_encrypted_to_device_messages(
+                  targets, mtx::events::DeviceEvent<mtx::events::msg::Dummy>{}, true);
+                nhlog::crypto()->info(
+                  "Recovering from broken olm channel with {}:{}", msg.sender, msg.sender_key);
+        } catch (std::exception &e) {
+                nhlog::crypto()->error("Failed to recover from broken olm sessions: {}", e.what());
+        }
 }
 
 nlohmann::json