Added a clearCookies method to WebBrowserComponent to clear any stored cookies

modules/juce_gui_extra/misc/juce_WebBrowserComponent.h

@@ -79,6 +79,9 @@ public:
     /** Refreshes the browser. */
     void refresh();
 
+    /** Clear cookies that the OS has stored for the WebComponents of this application */
+    static void clearCookies();
+
     //==============================================================================
     /** This callback is called when the browser is about to navigate
         to a new location.

modules/juce_gui_extra/native/juce_android_WebBrowserComponent.cpp

@@ -115,3 +115,7 @@ void WebBrowserComponent::visibilityChanged()
 void WebBrowserComponent::focusGained (FocusChangeType)
 {
 }
+
+void WebBrowserComponent::clearCookies()
+{
+}

modules/juce_gui_extra/native/juce_linux_X11_WebBrowserComponent.cpp

@@ -729,3 +729,10 @@ void WebBrowserComponent::visibilityChanged()
 void WebBrowserComponent::focusGained (FocusChangeType)
 {
 }
+
+void WebBrowserComponent::clearCookies()
+{
+    // Currently not implemented on linux as WebBrowserComponent currently does not
+    // store cookies on linux
+    jassertfalse;
+}

modules/juce_gui_extra/native/juce_mac_WebBrowserComponent.mm

@@ -421,3 +421,18 @@ void WebBrowserComponent::visibilityChanged()
 void WebBrowserComponent::focusGained (FocusChangeType)
 {
 }
+
+void WebBrowserComponent::clearCookies()
+{
+    NSHTTPCookieStorage *storage = [NSHTTPCookieStorage sharedHTTPCookieStorage];
+
+    if (NSArray<NSHTTPCookie *>* cookies = [storage cookies])
+    {
+        const NSUInteger n = [cookies count];
+
+        for (NSUInteger i = 0; i < n; ++i)
+            [storage deleteCookie:[cookies objectAtIndex:i]];
+    }
+
+    [[NSUserDefaults standardUserDefaults] synchronize];
+}

modules/juce_gui_extra/native/juce_win32_WebBrowserComponent.cpp

@@ -364,3 +364,35 @@ void WebBrowserComponent::focusGained (FocusChangeType)
         oleObject->Release();
     }
 }
+
+void WebBrowserComponent::clearCookies()
+{
+    HeapBlock<::INTERNET_CACHE_ENTRY_INFO> entry;
+    ::DWORD entrySize = sizeof (::INTERNET_CACHE_ENTRY_INFO);
+    ::HANDLE urlCacheHandle = ::FindFirstUrlCacheEntry (TEXT ("cookie:"), entry.getData(), &entrySize);
+
+    if (urlCacheHandle == nullptr && GetLastError() == ERROR_INSUFFICIENT_BUFFER)
+    {
+        entry.realloc (1, entrySize);
+        urlCacheHandle = ::FindFirstUrlCacheEntry (TEXT ("cookie:"), entry.getData(), &entrySize);
+    }
+
+    if (urlCacheHandle != nullptr)
+    {
+        while (true)
+        {
+            ::DeleteUrlCacheEntry (entry.getData()->lpszSourceUrlName);
+
+            if (::FindNextUrlCacheEntry (urlCacheHandle, entry.getData(), &entrySize) == 0
+                  && GetLastError() == ERROR_INSUFFICIENT_BUFFER)
+            {
+                entry.realloc (1, entrySize);
+
+                if (::FindNextUrlCacheEntry (urlCacheHandle, entry.getData(), &entrySize) == 0)
+                    break;
+            }
+        }
+
+        FindCloseUrlCache (urlCacheHandle);
+    }
+}