added try catch in nm (#2785)

* added try catch in nm

* changelog

* asdf

* gh action

CHANGELOG.md

@@ -7,6 +7,7 @@
 - Minor: Hosting messages are now clickable. (#2655)
 - Minor: Messages held by automod are now shown to the user. (#2626)
 - Minor: Load 100 blocked users rather than the default 20. (#2772)
+- Bugfix: Fixed a potential crashing issue related to the browser extension. (#2774)
 - Bugfix: Strip newlines from stream titles to prevent text going off of split header (#2755)
 - Bugfix: Automod messages now work properly again. (#2682)
 - Bugfix: `Login expired` message no longer highlights all tabs. (#2735)

src/singletons/NativeMessaging.cpp

@@ -149,31 +149,42 @@ void NativeMessagingServer::start()
 
 void NativeMessagingServer::ReceiverThread::run()
 {
-    ipc::message_queue::remove("chatterino_gui");
-    ipc::message_queue messageQueue(ipc::open_or_create, "chatterino_gui", 100,
-                                    MESSAGE_SIZE);
-
-    while (true)
+    try
     {
-        try
+        ipc::message_queue::remove("chatterino_gui");
+        ipc::message_queue messageQueue(ipc::open_or_create, "chatterino_gui",
+                                        100, MESSAGE_SIZE);
+
+        while (true)
         {
-            auto buf = std::make_unique<char[]>(MESSAGE_SIZE);
-            auto retSize = ipc::message_queue::size_type();
-            auto priority = static_cast<unsigned int>(0);
+            try
+            {
+                auto buf = std::make_unique<char[]>(MESSAGE_SIZE);
+                auto retSize = ipc::message_queue::size_type();
+                auto priority = static_cast<unsigned int>(0);
 
-            messageQueue.receive(buf.get(), MESSAGE_SIZE, retSize, priority);
+                messageQueue.receive(buf.get(), MESSAGE_SIZE, retSize,
+                                     priority);
 
-            auto document = QJsonDocument::fromJson(
-                QByteArray::fromRawData(buf.get(), retSize));
+                auto document = QJsonDocument::fromJson(
+                    QByteArray::fromRawData(buf.get(), retSize));
 
-            this->handleMessage(document.object());
-        }
-        catch (ipc::interprocess_exception &ex)
-        {
-            qCDebug(chatterinoNativeMessage)
-                << "received from gui process:" << ex.what();
+                this->handleMessage(document.object());
+            }
+            catch (ipc::interprocess_exception &ex)
+            {
+                qCDebug(chatterinoNativeMessage)
+                    << "received from gui process:" << ex.what();
+            }
         }
     }
+    catch (ipc::interprocess_exception &ex)
+    {
+        qCDebug(chatterinoNativeMessage)
+            << "run ipc message queue:" << ex.what();
+
+        nmIpcError().set(QString::fromLatin1(ex.what()));
+    }
 }
 
 void NativeMessagingServer::ReceiverThread::handleMessage(
@@ -272,4 +283,10 @@ void NativeMessagingServer::ReceiverThread::handleMessage(
     }
 }
 
+Atomic<boost::optional<QString>> &nmIpcError()
+{
+    static Atomic<boost::optional<QString>> x;
+    return x;
+}
+
 }  // namespace chatterino

src/singletons/NativeMessaging.hpp

@@ -1,6 +1,9 @@
 #pragma once
 
+#include <QString>
 #include <QThread>
+#include <boost/optional.hpp>
+#include <common/Atomic.hpp>
 
 namespace chatterino {
 
@@ -10,6 +13,8 @@ class Paths;
 void registerNmHost(Paths &paths);
 std::string &getNmQueueName(Paths &paths);
 
+Atomic<boost::optional<QString>> &nmIpcError();
+
 class NativeMessagingClient final
 {
 public:

src/widgets/settingspages/GeneralPage.cpp

@@ -7,6 +7,7 @@
 #include "Application.hpp"
 #include "common/Version.hpp"
 #include "singletons/Fonts.hpp"
+#include "singletons/NativeMessaging.hpp"
 #include "singletons/Paths.hpp"
 #include "singletons/Theme.hpp"
 #include "singletons/WindowManager.hpp"
@@ -442,6 +443,16 @@ void GeneralPage::initLayout(GeneralPageView &layout)
     layout.addDescription("The browser extension replaces the default "
                           "Twitch.tv chat with chatterino.");
 
+    {
+        if (auto err = nmIpcError().get())
+        {
+            layout.addDescription(
+                "An error happened during initialization of the "
+                "browser extension: " +
+                *err);
+        }
+    }
+
     layout.addDescription(formatRichNamedLink(
         CHROME_EXTENSION_LINK,
         "Download for Google Chrome and similar browsers."));