um: reorganize projects

* libservice -> service
* libsimple -> wrappers/simple
* libnt_path_converter -> wrappers/special/nt_path_converter

1 files changed, 276 insertions, 0 deletions

diff --git a/um/service/src/service.cpp b/um/service/src/service.cpp
new file mode 100644
index 0000000..8b5e043
--- /dev/null
+++ b/um/service/src/service.cpp
@@ -0,0 +1,276 @@
+// Copyright (c) 2015 Egor Tensin <Egor.Tensin@gmail.com>
+// This file is part of the "Windows 7 drivers" project.
+// For details, see https://github.com/egor-tensin/windows7-drivers.
+// Distributed under the MIT License.
+
+#include "libservice/all.hpp"
+
+#include <Windows.h>
+
+#include <string>
+#include <system_error>
+#include <utility>
+#include <vector>
+
+namespace libservice
+{
+    namespace
+    {
+        ServiceHandle open_service(
+            const ServiceManager& mgr,
+            const std::string& name)
+        {
+            const auto raw = OpenServiceA(
+                mgr,
+                name.c_str(),
+                SERVICE_ALL_ACCESS);
+
+            if (NULL == raw)
+            {
+                const auto ec = GetLastError();
+                throw std::system_error(
+                    ec, WindowsErrorCategory::get(), LIBSERVICE_ERROR_PREFIX);
+            }
+
+            return raw;
+        }
+
+        ServiceHandle install_service(
+            const ServiceManager& mgr,
+            const std::string& name,
+            const std::string& bin_path)
+        {
+            const auto raw = CreateServiceA(
+                mgr,
+                name.c_str(),
+                name.c_str(),
+                SERVICE_ALL_ACCESS,
+                SERVICE_KERNEL_DRIVER,
+                SERVICE_DEMAND_START,
+                SERVICE_ERROR_NORMAL,
+                bin_path.c_str(),
+                NULL,
+                NULL,
+                NULL,
+                NULL,
+                NULL);
+
+            if (NULL == raw)
+            {
+                const auto ec = GetLastError();
+                throw std::system_error(
+                    ec, WindowsErrorCategory::get(), LIBSERVICE_ERROR_PREFIX);
+            }
+
+            return raw;
+        }
+
+        void start_service(const ServiceHandle& handle)
+        {
+            if (!StartService(handle, 0, NULL))
+            {
+                const auto ec = GetLastError();
+                throw std::system_error(
+                    ec, WindowsErrorCategory::get(), LIBSERVICE_ERROR_PREFIX);
+            }
+        }
+
+        void stop_service(const ServiceHandle& handle)
+        {
+            SERVICE_STATUS service_status;
+
+            if (!ControlService(handle, SERVICE_CONTROL_STOP, &service_status))
+            {
+                const auto ec = GetLastError();
+                throw std::system_error(
+                    ec, WindowsErrorCategory::get(), LIBSERVICE_ERROR_PREFIX);
+            }
+        }
+
+        void uninstall_service(const ServiceHandle& handle)
+        {
+            if (!DeleteService(handle))
+            {
+                const auto ec = GetLastError();
+                throw std::system_error(
+                    ec, WindowsErrorCategory::get(), LIBSERVICE_ERROR_PREFIX);
+            }
+        }
+
+        bool service_exists(
+            const ServiceManager& mgr,
+            const std::string& name)
+        {
+            const auto raw = OpenServiceA(
+                mgr,
+                name.c_str(),
+                SERVICE_QUERY_STATUS);
+
+            if (NULL != raw)
+            {
+                ServiceHandle handle(raw);
+                return true;
+            }
+
+            const auto ec = GetLastError();
+
+            switch (ec)
+            {
+                case ERROR_SERVICE_DOES_NOT_EXIST:
+                    return false;
+
+                default:
+                    throw std::system_error(
+                        ec, WindowsErrorCategory::get(), LIBSERVICE_ERROR_PREFIX);
+            }
+        }
+
+        SERVICE_STATUS_PROCESS query_service_status(const ServiceHandle& handle)
+        {
+            SERVICE_STATUS_PROCESS status;
+            DWORD nbreq;
+
+            const auto buf_ptr = reinterpret_cast<BYTE*>(&status);
+            const auto buf_size = sizeof(status);
+
+            if (!QueryServiceStatusEx(
+                handle, SC_STATUS_PROCESS_INFO, buf_ptr, buf_size, &nbreq))
+            {
+                const auto ec = GetLastError();
+                throw std::system_error(
+                    ec, WindowsErrorCategory::get(), LIBSERVICE_ERROR_PREFIX);
+            }
+
+            return status;
+        }
+
+        DWORD query_service_state(const ServiceHandle& handle)
+        {
+            return query_service_status(handle).dwCurrentState;
+        }
+
+        SERVICE_STATUS_PROCESS wait_for_service_state(
+            const ServiceHandle& handle,
+            const DWORD desired_state)
+        {
+            auto status = query_service_status(handle);
+
+            DWORD old_timestamp = GetTickCount();
+
+            DWORD old_check_point = status.dwCheckPoint;
+            DWORD old_wait_hint = status.dwWaitHint;
+
+            while (desired_state != status.dwCurrentState)
+            {
+                DWORD wait_time = old_wait_hint / 10;
+
+                if (wait_time < 1000)
+                    wait_time = 1000;
+                else if (wait_time > 10000)
+                    wait_time = 10000;
+
+                Sleep(wait_time);
+
+                status = query_service_status(handle);
+
+                if (desired_state == status.dwCurrentState)
+                    break;
+
+                if (status.dwCheckPoint > old_check_point)
+                {
+                    old_timestamp = GetTickCount();
+
+                    old_check_point = status.dwCheckPoint;
+                    old_wait_hint = status.dwWaitHint;
+                }
+                else if (GetTickCount() - old_timestamp > old_wait_hint)
+                {
+                    return status;
+                }
+            }
+
+            return status;
+        }
+    }
+
+    Service Service::open(
+        const ServiceManager& mgr,
+        const std::string& name)
+    {
+        return open_service(mgr, name);
+    }
+
+    Service Service::install(
+        const ServiceManager& mgr,
+        const std::string& name,
+        const std::string& bin_path)
+    {
+        return install_service(mgr, name, bin_path);
+    }
+
+    bool Service::exists(
+        const ServiceManager& mgr,
+        const std::string& name)
+    {
+        return service_exists(mgr, name);
+    }
+
+    void Service::start() const
+    {
+        const auto state = query_service_state(handle);
+
+        switch (state)
+        {
+            case SERVICE_STOPPED:
+                break;
+
+            case SERVICE_STOP_PENDING:
+                wait_for_service_state(handle, SERVICE_STOPPED);
+                break;
+
+            default:
+                return;
+        }
+
+        start_service(handle);
+        wait_for_service_state(handle, SERVICE_RUNNING);
+    }
+
+    void Service::stop() const
+    {
+        switch (query_service_state(handle))
+        {
+            case SERVICE_STOPPED:
+                return;
+
+            case SERVICE_STOP_PENDING:
+                wait_for_service_state(handle, SERVICE_STOPPED);
+                return;
+        }
+
+        stop_service(handle);
+        wait_for_service_state(handle, SERVICE_STOPPED);
+    }
+
+    void Service::uninstall() const
+    {
+        stop();
+        uninstall_service(handle);
+    }
+
+    void swap(Service& a, Service& b) LIBSERVICE_NOEXCEPT
+    {
+        a.swap(b);
+    }
+}
+
+namespace std
+{
+    template <>
+    void swap<libservice::Service>(
+        libservice::Service& a,
+        libservice::Service& b) LIBSERVICE_NOEXCEPT
+    {
+        a.swap(b);
+    }
+}