Sentry: use locked contexts to send data to avoid races

include/TSentry.h

@@ -24,6 +24,7 @@ public:
     void AddErrorBreadcrumb(const std::string& msg, const std::string& file, const std::string& line);
     // cleared when Logged
     void SetTransaction(const std::string& id);
+    [[nodiscard]] std::unique_lock<std::mutex> CreateExclusiveContext();
 
 private:
     bool mValid { true };

src/THeartbeatThread.cpp

@@ -48,6 +48,7 @@ void THeartbeatThread::operator()() {
                 debug("server returned \"" + T + "\"");
                 if (T.size() > std::string("YOU_SHALL_NOT_PASS").size()
                     && Application::Settings.Key.size() == 36) {
+                    auto Lock = Sentry.CreateExclusiveContext();
                     Sentry.AddExtra("response-body", T);
                     Sentry.AddExtra("request-body", Body);
                     Sentry.SetTransaction(Application::GetBackendHostname() + Target);

src/TNetwork.cpp

@@ -297,6 +297,7 @@ void TNetwork::Authentication(SOCKET TCPSock) {
     if (!AuthResponse.IsObject() && Rc != "0") {
         ClientKick(*Client, "Backend returned invalid auth response format.");
         error("Backend returned invalid auth response format. This should never happen.");
+        auto Lock = Sentry.CreateExclusiveContext();
         Sentry.AddExtra("response-body", Rc);
         Sentry.AddExtra("key", RequestString);
         Sentry.SetTransaction(Application::GetBackendUrlForAuth() + Target);

src/TSentry.cpp

@@ -86,3 +86,7 @@ void TSentry::SetTransaction(const std::string& id) {
     }
     sentry_set_transaction(id.c_str());
 }
+
+std::unique_lock<std::mutex> TSentry::CreateExclusiveContext() {
+    return std::unique_lock<std::mutex>(mMutex);
+}

src/TServer.cpp

@@ -323,6 +323,7 @@ void TServer::Apply(TClient& c, int VID, const std::string& pckt) {
     std::string VD = c.GetCarData(VID);
     if (VD.empty()) {
         error("Tried to apply change to vehicle that does not exist");
+        auto Lock = Sentry.CreateExclusiveContext();
         Sentry.AddExtra("packet", Packet);
         Sentry.AddExtra("vehicle-id", std::to_string(VID));
         Sentry.AddExtra("client-car-count", std::to_string(c.GetCarCount()));