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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "printing/backend/spooler_win.h"
#include <windows.h>
#include <winspool.h>
#include <winsvc.h>
#include "base/logging.h"
#include "base/win/scoped_handle.h"
namespace printing::internal {
namespace {
class ScHandleTraits {
public:
typedef SC_HANDLE Handle;
ScHandleTraits() = delete;
ScHandleTraits(const ScHandleTraits&) = delete;
ScHandleTraits& operator=(const ScHandleTraits&) = delete;
static bool CloseHandle(SC_HANDLE handle) {
return ::CloseServiceHandle(handle) != FALSE;
}
static bool IsHandleValid(SC_HANDLE handle) { return handle != nullptr; }
static SC_HANDLE NullHandle() { return nullptr; }
};
typedef base::win::GenericScopedHandle<ScHandleTraits,
base::win::DummyVerifierTraits>
ScopedScHandle;
} // namespace
SpoolerServiceStatus IsSpoolerRunning() {
ScopedScHandle scm_handle(
::OpenSCManager(nullptr, nullptr, SC_MANAGER_CONNECT));
if (!scm_handle.IsValid()) {
LOG(ERROR) << "Unable to connect to Windows Service Control Manager";
return SpoolerServiceStatus::kUnknown;
}
ScopedScHandle sc_handle(
::OpenService(scm_handle.Get(), L"Spooler", SERVICE_QUERY_STATUS));
if (!sc_handle.IsValid()) {
LOG(ERROR) << "Unable to open Windows print spooler service";
return SpoolerServiceStatus::kUnknown;
}
SERVICE_STATUS service_status;
if (!::QueryServiceStatus(sc_handle.Get(), &service_status)) {
LOG(ERROR) << "Unable to open Windows print spooler service";
return SpoolerServiceStatus::kUnknown;
}
return service_status.dwCurrentState == SERVICE_RUNNING
? SpoolerServiceStatus::kRunning
: SpoolerServiceStatus::kNotRunning;
}
} // namespace printing::internal
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