Add a helper process to Chrome Frame to allow for non-administrative installs. The helper process registers a hook dll that performs the necessary BHO injection instead of registering it in HKLM.

BUG=53127
TEST=Non-admin CF installs work.

Review URL: http://codereview.chromium.org/3158036

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@57860 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 28 insertions, 0 deletions

diff --git a/chrome_frame/chrome_frame_helper_dll.cc b/chrome_frame/chrome_frame_helper_dll.cc
new file mode 100644
index 0000000..2c3a4a8
--- /dev/null
+++ b/chrome_frame/chrome_frame_helper_dll.cc
@@ -0,0 +1,28 @@
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// chrome_frame_helper_dll.cc : Implementation of a helper DLL that initializes
+// a listener for WinEvent hooks on load.
+//
+// Calling the StartUserModeBrowserInjection will set an in-context WinEvent
+// hook that will cause this DLL to get loaded in any process that sends
+// EVENT_OBJECT_CREATE accessibility events. This is a poor substitute to
+// getting in via vetted means (i.e. real BHO registration).
+
+#include "chrome_frame/bho_loader.h"
+#include "chrome_frame/chrome_frame_helper_util.h"
+
+STDAPI StartUserModeBrowserInjection() {
+  return BHOLoader::GetInstance()->StartHook() ? S_OK : E_FAIL;
+}
+
+STDAPI StopUserModeBrowserInjection() {
+  BHOLoader::GetInstance()->StopHook();
+  return S_OK;
+}
+
+BOOL APIENTRY DllMain(HMODULE module, DWORD reason_for_call, void* reserved) {
+  return TRUE;
+}
+