mshtml: Return E_ABORT from postMessage called without a caller ServiceProvider.

dlls/mshtml/htmlwindow.c

@@ -2473,18 +2473,14 @@ static HRESULT post_message(HTMLInnerWindow *window, VARIANT msg, BSTR targetOri
 static HRESULT WINAPI HTMLWindow6_postMessage(IHTMLWindow6 *iface, BSTR msg, VARIANT targetOrigin)
 {
     HTMLWindow *This = impl_from_IHTMLWindow6(iface);
-    VARIANT var, transfer;
 
     TRACE("(%p)->(%s %s)\n", This, debugstr_w(msg), debugstr_variant(&targetOrigin));
 
     if(V_VT(&targetOrigin) != VT_BSTR)
         return E_INVALIDARG;
 
-    V_VT(&var) = VT_BSTR;
-    V_BSTR(&var) = msg;
-    V_VT(&transfer) = VT_EMPTY;
-    return post_message(This->inner_window, var, V_BSTR(&targetOrigin), transfer, NULL,
-                        dispex_compat_mode(&This->inner_window->event_target.dispex));
+    /* This can't obtain the source, and never works even in IE9+ modes... */
+    return E_ABORT;
 }
 
 static HRESULT WINAPI HTMLWindow6_toStaticHTML(IHTMLWindow6 *iface, BSTR bstrHTML, BSTR *pbstrStaticHTML)

dlls/mshtml/tests/events.c

@@ -3218,7 +3218,6 @@ static void test_message_event(IHTMLDocument2 *doc)
     ok(hres == S_OK, "get_onmessage failed: %08lx\n", hres);
     ok(V_VT(&v[0]) == VT_DISPATCH, "V_VT(onmessage) = %d\n", V_VT(&v[0]));
     ok(V_DISPATCH(&v[0]) == (IDispatch*)&onmessage_obj, "V_DISPATCH(onmessage) = %p\n", V_DISPATCH(&v[0]));
-    IHTMLWindow6_Release(window6);
 
     if(document_mode >= 9)
         add_event_listener((IUnknown*)doc, L"message", (IDispatch*)&onmessage_obj, VARIANT_TRUE);
@@ -3227,6 +3226,10 @@ static void test_message_event(IHTMLDocument2 *doc)
     V_BSTR(&v[1]) = SysAllocString(L"foobar");
     V_VT(&v[0]) = VT_BSTR;
     V_BSTR(&v[0]) = SysAllocString(L"*");
+    bstr = SysAllocString(L"foobar");
+    hres = IHTMLWindow6_postMessage(window6, V_BSTR(&v[1]), v[0]);
+    ok(hres == E_ABORT, "postMessage returned: %08lx\n", hres);
+    IHTMLWindow6_Release(window6);
 
     hres = IHTMLWindow2_QueryInterface(window, &IID_IDispatchEx, (void**)&dispex);
     ok(hres == S_OK, "Could not get IDispatchEx iface: %08lx\n", hres);