| | | 1 | | using System.Runtime.InteropServices; |
| | | 2 | | |
| | | 3 | | namespace NtpServiceLibrary |
| | | 4 | | { |
| | | 5 | | /// <summary> |
| | | 6 | | /// Represents possible states of a Windows service. |
| | | 7 | | /// </summary> |
| | | 8 | | public enum ServiceState |
| | | 9 | | { |
| | | 10 | | /// <summary>Service is stopped.</summary> |
| | | 11 | | SERVICE_STOPPED = 0x00000001, |
| | | 12 | | /// <summary>Service is starting.</summary> |
| | | 13 | | SERVICE_START_PENDING = 0x00000002, |
| | | 14 | | /// <summary>Service is stopping.</summary> |
| | | 15 | | SERVICE_STOP_PENDING = 0x00000003, |
| | | 16 | | /// <summary>Service is running.</summary> |
| | | 17 | | SERVICE_RUNNING = 0x00000004, |
| | | 18 | | /// <summary>Service is resuming from a paused state.</summary> |
| | | 19 | | SERVICE_CONTINUE_PENDING = 0x00000005, |
| | | 20 | | /// <summary>Service is pausing.</summary> |
| | | 21 | | SERVICE_PAUSE_PENDING = 0x00000006, |
| | | 22 | | /// <summary>Service is paused.</summary> |
| | | 23 | | SERVICE_PAUSED = 0x00000007, |
| | | 24 | | } |
| | | 25 | | |
| | | 26 | | public interface IServiceStatusProvider |
| | | 27 | | { |
| | | 28 | | bool SetServiceStatus(System.IntPtr handle, ref ServiceStateInfo serviceStatus); |
| | | 29 | | } |
| | | 30 | | |
| | | 31 | | public class SystemServiceStatusProvider : IServiceStatusProvider |
| | | 32 | | { |
| | | 33 | | [DllImport("advapi32.dll", SetLastError = true, EntryPoint = "SetServiceStatus")] |
| | | 34 | | public static extern bool _SetServiceStatus(System.IntPtr handle, ref ServiceStateInfo serviceStatus); |
| | | 35 | | public bool SetServiceStatus(System.IntPtr handle, ref ServiceStateInfo serviceStatus) => _SetServiceStatus(hand |
| | | 36 | | } |
| | | 37 | | |
| | | 38 | | /// <summary> |
| | | 39 | | /// Contains information about the current status of a Windows service. |
| | | 40 | | /// Used for interop with the Windows Service Control Manager. |
| | | 41 | | /// </summary> |
| | | 42 | | [StructLayout(LayoutKind.Sequential)] |
| | | 43 | | public struct ServiceStateInfo |
| | | 44 | | { |
| | | 45 | | /// <summary>Type of the service.</summary> |
| | | 46 | | public int dwServiceType; |
| | | 47 | | /// <summary>Current state of the service.</summary> |
| | | 48 | | public ServiceState dwCurrentState; |
| | | 49 | | /// <summary>Controls accepted by the service.</summary> |
| | | 50 | | public int dwControlsAccepted; |
| | | 51 | | /// <summary>Win32 exit code.</summary> |
| | | 52 | | public int dwWin32ExitCode; |
| | | 53 | | /// <summary>Service-specific exit code.</summary> |
| | | 54 | | public int dwServiceSpecificExitCode; |
| | | 55 | | /// <summary>Checkpoint value for lengthy operations.</summary> |
| | | 56 | | public int dwCheckPoint; |
| | | 57 | | /// <summary>Estimated time required for a pending operation, in milliseconds.</summary> |
| | | 58 | | public int dwWaitHint; |
| | | 59 | | }; |
| | | 60 | | |
| | | 61 | | /// <summary> |
| | | 62 | | /// Provides methods for updating the service status with the Windows Service Control Manager. |
| | | 63 | | /// </summary> |
| | | 64 | | public class ServiceStatus |
| | | 65 | | { |
| | | 66 | | private static ServiceStatus _instance = null; |
| | | 67 | | private ServiceStateInfo _serviceStateInfo; |
| | | 68 | | private IServiceStatusProvider _provider; |
| | | 69 | | |
| | | 70 | | /// <summary> |
| | | 71 | | /// Initializes a new instance of the <see cref="ServiceStatus"/> class. |
| | | 72 | | /// </summary> |
| | 6 | 73 | | private ServiceStatus(IServiceStatusProvider provider) |
| | 6 | 74 | | { |
| | 6 | 75 | | _provider = provider ?? new SystemServiceStatusProvider(); |
| | 6 | 76 | | _serviceStateInfo = new ServiceStateInfo |
| | 6 | 77 | | { |
| | 6 | 78 | | dwWaitHint = 100000 |
| | 6 | 79 | | }; |
| | 6 | 80 | | } |
| | | 81 | | |
| | | 82 | | /// <summary> |
| | | 83 | | /// Gets the singleton instance of <see cref="ServiceStatus"/>. |
| | | 84 | | /// </summary> |
| | | 85 | | /// <returns>The singleton instance.</returns> |
| | | 86 | | private static ServiceStatus GetInstance(IServiceStatusProvider provider) |
| | 32 | 87 | | { |
| | 32 | 88 | | if (_instance == null) |
| | 6 | 89 | | _instance = new ServiceStatus(provider); |
| | 32 | 90 | | return _instance; |
| | 32 | 91 | | } |
| | | 92 | | |
| | | 93 | | /// <summary> |
| | | 94 | | /// Sets the provider. |
| | | 95 | | /// </summary> |
| | | 96 | | /// <param name="provider">Service status manipulation object.</param> |
| | | 97 | | public static void SetProvider(IServiceStatusProvider provider) |
| | 2 | 98 | | { |
| | 2 | 99 | | _instance._provider = provider ?? new SystemServiceStatusProvider(); |
| | 2 | 100 | | } |
| | | 101 | | |
| | | 102 | | /// <summary> |
| | | 103 | | /// Deletes the singleton instance (e.g. for use in testing). |
| | | 104 | | /// </summary> |
| | | 105 | | internal static void ClearInstance() |
| | 6 | 106 | | { |
| | 6 | 107 | | _instance = null; |
| | 6 | 108 | | } |
| | | 109 | | |
| | | 110 | | /// <summary> |
| | | 111 | | /// Sets the current service status using the Windows API. |
| | | 112 | | /// </summary> |
| | | 113 | | /// <param name="handle">A handle to the service status.</param> |
| | | 114 | | /// <param name="state">The new state to set.</param> |
| | | 115 | | /// <param name="provider">Service status manipulation object.</param> |
| | | 116 | | /// <returns>True if the status was set successfully; otherwise, false.</returns> |
| | | 117 | | public static bool Set(System.IntPtr handle, ServiceState state, IServiceStatusProvider provider=null) |
| | 32 | 118 | | { |
| | 32 | 119 | | var instance = GetInstance(provider); |
| | 32 | 120 | | instance._serviceStateInfo.dwCurrentState = state; |
| | 32 | 121 | | return instance._provider.SetServiceStatus(handle, ref instance._serviceStateInfo); |
| | 32 | 122 | | } |
| | | 123 | | } |
| | | 124 | | } |