Use native user temporary directory path for the browser socket in macOS

Author: varjolintu

src/browser/BrowserShared.cpp

@@ -1,5 +1,5 @@
 /*
- *  Copyright (C) 2020 KeePassXC Team <team@keepassxc.org>
+ *  Copyright (C) 2026 KeePassXC Team <team@keepassxc.org>
  *
  *  This program is free software: you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -24,6 +24,9 @@
 #if defined(KEEPASSXC_DIST_SNAP)
 #include <QProcessEnvironment>
 #endif
+#if defined(Q_OS_MACOS)
+#include "gui/osutils/macutils/MacUtils.h"
+#endif
 
 namespace BrowserShared
 {
@@ -53,7 +56,11 @@ namespace BrowserShared
 #elif defined(Q_OS_WIN)
         // Windows uses named pipes
         return serverName + "_" + qgetenv("USERNAME");
-#else // Q_OS_MACOS and others
+#elif defined(Q_OS_MACOS)
+        // In macOS QStandardPaths::TempLocation can be overridden with $TMPDIR. Use the location provided by the OS.
+        // Otherwise the socket will be created to incorrect path, and connection with the browser extension breaks.
+        return macUtils()->getTemporaryDirectory() + serverName;
+#else
         return QStandardPaths::writableLocation(QStandardPaths::TempLocation) + serverName;
 #endif
     }

src/gui/osutils/macutils/AppKit.h

@@ -1,5 +1,5 @@
 /*
- *  Copyright (C) 2023 KeePassXC Team <team@keepassxc.org>
+ *  Copyright (C) 2026 KeePassXC Team <team@keepassxc.org>
  *  Copyright (C) 2016 Lennart Glauer <mail@lennart-glauer.de>
  *
  *  This program is free software: you can redistribute it and/or modify
@@ -48,6 +48,7 @@ class AppKit : public QObject
     void toggleForegroundApp(bool foreground);
     void setWindowSecurity(QWindow* window, bool state);
     void configureWindowAndHelpMenus(QMainWindow* mainWindow, QMenu* helpMenu);
+    NSString* getTemporaryDirectory();
 
 signals:
     void userSwitched();

src/gui/osutils/macutils/AppKitImpl.h

@@ -1,6 +1,6 @@
 /*
+ *  Copyright (C) 2026 KeePassXC Team <team@keepassxc.org>
  *  Copyright (C) 2016 Lennart Glauer <mail@lennart-glauer.de>
- *  Copyright (C) 2017 KeePassXC Team <team@keepassxc.org>
  *
  *  This program is free software: you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -43,5 +43,6 @@
 - (void) toggleForegroundApp:(bool) foreground;
 - (void) setWindowSecurity:(NSWindow*) window state:(bool) state;
 - (void) configureWindowAndHelpMenus:(QMainWindow*) mainWindow helpMenu:(QMenu*) helpMenu;
+- (NSString*) getTemporaryDirectory;
 
 @end

src/gui/osutils/macutils/AppKitImpl.mm

@@ -1,5 +1,5 @@
 /*
- *  Copyright (C) 2024 KeePassXC Team <team@keepassxc.org>
+ *  Copyright (C) 2026 KeePassXC Team <team@keepassxc.org>
  *  Copyright (C) 2016 Lennart Glauer <mail@lennart-glauer.de>
  *
  *  This program is free software: you can redistribute it and/or modify
@@ -253,6 +253,11 @@ - (void) configureWindowAndHelpMenus:(QMainWindow*) mainWindow helpMenu:(QMenu*)
     NSApp.helpMenu = helpMenu->toNSMenu();
 }
 
+- (NSString*) getTemporaryDirectory
+{
+    return NSTemporaryDirectory();
+}
+
 @end
 
 
@@ -314,6 +319,10 @@ - (void) configureWindowAndHelpMenus:(QMainWindow*) mainWindow helpMenu:(QMenu*)
     return [static_cast<id>(self) isStatusBarDark];
 }
 
+NSString* AppKit::getTemporaryDirectory()
+{
+    return [static_cast<id>(self) getTemporaryDirectory];
+}
 
 bool AppKit::enableAccessibility()
 {

src/gui/osutils/macutils/MacUtils.cpp

@@ -1,5 +1,5 @@
 /*
- *  Copyright (C) 2023 KeePassXC Team <team@keepassxc.org>
+ *  Copyright (C) 2026 KeePassXC Team <team@keepassxc.org>
  *  Copyright (C) 2012 Felix Geyer <debfx@fobos.de>
  *
  *  This program is free software: you can redistribute it and/or modify
@@ -20,11 +20,11 @@
 #include <QApplication>
 #include <QDir>
 #include <QFile>
+#include <QMenu>
 #include <QSettings>
 #include <QStandardPaths>
 #include <QTimer>
 #include <QWindow>
-#include <QMenu>
 
 #include <ApplicationServices/ApplicationServices.h>
 
@@ -103,6 +103,12 @@ bool MacUtils::enableScreenRecording()
     return m_appkit->enableScreenRecording();
 }
 
+QString MacUtils::getTemporaryDirectory()
+{
+    const auto temporaryDirectory = m_appkit->getTemporaryDirectory();
+    return QString::fromNSString(temporaryDirectory);
+}
+
 bool MacUtils::isDarkMode() const
 {
     return m_appkit->isDarkMode();

src/gui/osutils/macutils/MacUtils.h

@@ -1,5 +1,5 @@
 /*
- *  Copyright (C) 2025 KeePassXC Team <team@keepassxc.org>
+ *  Copyright (C) 2026 KeePassXC Team <team@keepassxc.org>
  *  Copyright (C) 2012 Felix Geyer <debfx@fobos.de>
  *
  *  This program is free software: you can redistribute it and/or modify
@@ -51,6 +51,7 @@ class MacUtils : public OSUtilsBase
     bool isHidden();
     bool enableAccessibility();
     bool enableScreenRecording();
+    QString getTemporaryDirectory();
     void toggleForegroundApp(bool foreground);
 
     void registerNativeEventFilter() override;