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// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/google/google_update_app_command.h"
#include "base/win/scoped_bstr.h"
#include "chrome/install_static/install_util.h"
void ConfigureProxyBlanket(IUnknown* interface_pointer) {
::CoSetProxyBlanket(
interface_pointer, RPC_C_AUTHN_DEFAULT, RPC_C_AUTHZ_DEFAULT,
COLE_DEFAULT_PRINCIPAL, RPC_C_AUTHN_LEVEL_PKT_PRIVACY,
RPC_C_IMP_LEVEL_IMPERSONATE, nullptr, EOAC_DYNAMIC_CLOAKING);
}
base::expected<Microsoft::WRL::ComPtr<IAppCommandWeb>, HRESULT>
GetUpdaterAppCommand(const std::wstring& command_name) {
Microsoft::WRL::ComPtr<IUnknown> server;
HRESULT hr = ::CoCreateInstance(CLSID_GoogleUpdate3WebSystemClass, nullptr,
CLSCTX_ALL, IID_PPV_ARGS(&server));
if (FAILED(hr)) {
return base::unexpected(hr);
}
ConfigureProxyBlanket(server.Get());
// Chrome queries for the SxS IIDs first, with a fallback to the legacy IID.
// Without this change, marshaling can load the typelib from the wrong hive
// (HKCU instead of HKLM, or vice-versa).
Microsoft::WRL::ComPtr<IGoogleUpdate3Web> google_update;
hr = server.CopyTo(__uuidof(IGoogleUpdate3WebSystem),
IID_PPV_ARGS_Helper(&google_update));
if (FAILED(hr)) {
hr = server.As(&google_update);
if (FAILED(hr)) {
return base::unexpected(hr);
}
}
Microsoft::WRL::ComPtr<IDispatch> dispatch;
hr = google_update->createAppBundleWeb(&dispatch);
if (FAILED(hr)) {
return base::unexpected(hr);
}
// Chrome queries for the SxS IIDs first, with a fallback to the legacy IID.
// Without this change, marshaling can load the typelib from the wrong hive
// (HKCU instead of HKLM, or vice-versa).
Microsoft::WRL::ComPtr<IAppBundleWeb> app_bundle;
hr = dispatch.CopyTo(__uuidof(IAppBundleWebSystem),
IID_PPV_ARGS_Helper(&app_bundle));
if (FAILED(hr)) {
hr = dispatch.As(&app_bundle);
if (FAILED(hr)) {
return base::unexpected(hr);
}
}
dispatch.Reset();
ConfigureProxyBlanket(app_bundle.Get());
app_bundle->initialize();
const wchar_t* app_guid = install_static::GetAppGuid();
hr = app_bundle->createInstalledApp(base::win::ScopedBstr(app_guid).Get());
if (FAILED(hr)) {
return base::unexpected(hr);
}
hr = app_bundle->get_appWeb(0, &dispatch);
if (FAILED(hr)) {
return base::unexpected(hr);
}
Microsoft::WRL::ComPtr<IAppWeb> app;
hr = dispatch.CopyTo(__uuidof(IAppWebSystem), IID_PPV_ARGS_Helper(&app));
if (FAILED(hr)) {
hr = dispatch.As(&app);
if (FAILED(hr)) {
return base::unexpected(hr);
}
}
dispatch.Reset();
ConfigureProxyBlanket(app.Get());
hr = app->get_command(base::win::ScopedBstr(command_name).Get(), &dispatch);
if (FAILED(hr) || !dispatch) {
return base::unexpected(hr);
}
Microsoft::WRL::ComPtr<IAppCommandWeb> app_command;
hr = dispatch.CopyTo(__uuidof(IAppCommandWebSystem),
IID_PPV_ARGS_Helper(&app_command));
if (FAILED(hr)) {
hr = dispatch.As(&app_command);
if (FAILED(hr)) {
return base::unexpected(hr);
}
}
ConfigureProxyBlanket(app_command.Get());
return base::ok(app_command);
}
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