initial commit
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i2p
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using System;
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using System.Net;
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using System.Runtime.InteropServices;
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using System.Text;
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namespace Quasar.Client.Utilities
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{
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/// <summary>
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/// Provides access to the Win32 API.
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/// </summary>
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public static class NativeMethods
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{
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[StructLayout(LayoutKind.Sequential)]
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internal struct LASTINPUTINFO
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{
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public static readonly int SizeOf = Marshal.SizeOf(typeof(LASTINPUTINFO));
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[MarshalAs(UnmanagedType.U4)] public UInt32 cbSize;
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[MarshalAs(UnmanagedType.U4)] public UInt32 dwTime;
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}
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[DllImport("kernel32.dll", CharSet = CharSet.Unicode, SetLastError = true)]
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internal static extern IntPtr LoadLibrary(string lpFileName);
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[DllImport("kernel32.dll", SetLastError = true)]
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[return: MarshalAs(UnmanagedType.Bool)]
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internal static extern bool FreeLibrary(IntPtr hModule);
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[DllImport("kernel32.dll", CharSet = CharSet.Ansi, SetLastError = true)]
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internal static extern IntPtr GetProcAddress(IntPtr hModule, string procName);
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[DllImport("kernel32.dll", SetLastError = true)]
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internal static extern bool QueryFullProcessImageName([In] IntPtr hProcess, [In] uint dwFlags, [Out] StringBuilder lpExeName, [In, Out] ref uint lpdwSize);
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/// <summary>
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/// Performs a bit-block transfer of the color data corresponding to a
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/// rectangle of pixels from the specified source device context into
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/// a destination device context.
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/// </summary>
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/// <param name="hdc">Handle to the destination device context.</param>
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/// <param name="nXDest">The leftmost x-coordinate of the destination rectangle (in pixels).</param>
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/// <param name="nYDest">The topmost y-coordinate of the destination rectangle (in pixels).</param>
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/// <param name="nWidth">The width of the source and destination rectangles (in pixels).</param>
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/// <param name="nHeight">The height of the source and the destination rectangles (in pixels).</param>
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/// <param name="hdcSrc">Handle to the source device context.</param>
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/// <param name="nXSrc">The leftmost x-coordinate of the source rectangle (in pixels).</param>
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/// <param name="nYSrc">The topmost y-coordinate of the source rectangle (in pixels).</param>
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/// <param name="dwRop">A raster-operation code.</param>
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/// <returns>
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/// <c>true</c> if the operation succeedes, <c>false</c> otherwise. To get extended error information, call <see cref="System.Runtime.InteropServices.Marshal.GetLastWin32Error"/>.
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/// </returns>
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[DllImport("gdi32.dll", EntryPoint = "BitBlt", SetLastError = true)]
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[return: MarshalAs(UnmanagedType.Bool)]
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internal static extern bool BitBlt([In] IntPtr hdc, int nXDest, int nYDest, int nWidth, int nHeight,
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[In] IntPtr hdcSrc, int nXSrc, int nYSrc, int dwRop);
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[DllImport("gdi32.dll", CharSet = CharSet.Unicode)]
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internal static extern IntPtr CreateDC(string lpszDriver, string lpszDevice, string lpszOutput, IntPtr lpInitData);
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[DllImport("gdi32.dll")]
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internal static extern bool DeleteDC([In] IntPtr hdc);
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[DllImport("user32.dll")]
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internal static extern bool GetLastInputInfo(ref LASTINPUTINFO plii);
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[DllImport("user32.dll")]
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internal static extern bool SetCursorPos(int x, int y);
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[DllImport("user32.dll", SetLastError = false)]
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internal static extern IntPtr GetMessageExtraInfo();
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/// <summary>
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/// Synthesizes keystrokes, mouse motions, and button clicks.
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/// </summary>
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[DllImport("user32.dll")]
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internal static extern uint SendInput(uint nInputs,
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[MarshalAs(UnmanagedType.LPArray), In] INPUT[] pInputs,
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int cbSize);
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[StructLayout(LayoutKind.Sequential)]
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internal struct INPUT
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{
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internal uint type;
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internal InputUnion u;
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internal static int Size => Marshal.SizeOf(typeof(INPUT));
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}
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[StructLayout(LayoutKind.Explicit)]
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internal struct InputUnion
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{
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[FieldOffset(0)]
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internal MOUSEINPUT mi;
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[FieldOffset(0)]
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internal KEYBDINPUT ki;
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[FieldOffset(0)]
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internal HARDWAREINPUT hi;
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}
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[StructLayout(LayoutKind.Sequential)]
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internal struct MOUSEINPUT
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{
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internal int dx;
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internal int dy;
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internal int mouseData;
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internal uint dwFlags;
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internal uint time;
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internal IntPtr dwExtraInfo;
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}
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[StructLayout(LayoutKind.Sequential)]
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internal struct KEYBDINPUT
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{
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internal ushort wVk;
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internal ushort wScan;
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internal uint dwFlags;
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internal uint time;
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internal IntPtr dwExtraInfo;
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}
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[StructLayout(LayoutKind.Sequential)]
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internal struct HARDWAREINPUT
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{
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public uint uMsg;
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public ushort wParamL;
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public ushort wParamH;
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}
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[DllImport("user32.dll")]
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internal static extern bool SystemParametersInfo(
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uint uAction, uint uParam, ref IntPtr lpvParam,
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uint flags);
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[DllImport("user32.dll")]
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internal static extern int PostMessage(IntPtr hWnd, int wMsg, IntPtr wParam, IntPtr lParam);
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[DllImport("user32.dll", CharSet = CharSet.Unicode)]
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internal static extern IntPtr OpenDesktop(
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string hDesktop, int flags, bool inherit,
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uint desiredAccess);
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[DllImport("user32.dll")]
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internal static extern bool CloseDesktop(
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IntPtr hDesktop);
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internal delegate bool EnumDesktopWindowsProc(
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IntPtr hDesktop, IntPtr lParam);
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[DllImport("user32.dll")]
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internal static extern bool EnumDesktopWindows(
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IntPtr hDesktop, EnumDesktopWindowsProc callback,
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IntPtr lParam);
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[DllImport("user32.dll")]
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internal static extern bool IsWindowVisible(
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IntPtr hWnd);
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[DllImport("user32.dll")]
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internal static extern IntPtr GetForegroundWindow();
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[DllImport("user32.dll", CharSet = CharSet.Unicode, SetLastError = true)]
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internal static extern int GetWindowText(IntPtr hWnd, StringBuilder lpString, int nMaxCount);
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[DllImport("iphlpapi.dll", SetLastError = true)]
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internal static extern uint GetExtendedTcpTable(IntPtr pTcpTable, ref int dwOutBufLen, bool sort, int ipVersion,
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TcpTableClass tblClass, uint reserved = 0);
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[DllImport("iphlpapi.dll")]
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internal static extern int SetTcpEntry(IntPtr pTcprow);
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[StructLayout(LayoutKind.Sequential)]
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internal struct MibTcprowOwnerPid
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{
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public uint state;
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public uint localAddr;
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)] public byte[] localPort;
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public uint remoteAddr;
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)] public byte[] remotePort;
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public uint owningPid;
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public IPAddress LocalAddress
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{
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get { return new IPAddress(localAddr); }
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}
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public ushort LocalPort
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{
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get { return BitConverter.ToUInt16(new byte[2] { localPort[1], localPort[0] }, 0); }
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}
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public IPAddress RemoteAddress
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{
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get { return new IPAddress(remoteAddr); }
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}
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public ushort RemotePort
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{
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get { return BitConverter.ToUInt16(new byte[2] { remotePort[1], remotePort[0] }, 0); }
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}
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}
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[StructLayout(LayoutKind.Sequential)]
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internal struct MibTcptableOwnerPid
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{
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public uint dwNumEntries;
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private readonly MibTcprowOwnerPid table;
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}
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internal enum TcpTableClass
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{
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TcpTableBasicListener,
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TcpTableBasicConnections,
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TcpTableBasicAll,
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TcpTableOwnerPidListener,
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TcpTableOwnerPidConnections,
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TcpTableOwnerPidAll,
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TcpTableOwnerModuleListener,
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TcpTableOwnerModuleConnections,
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TcpTableOwnerModuleAll
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}
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}
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}
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@@ -0,0 +1,62 @@
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using System;
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using System.Threading;
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namespace Quasar.Client.Utilities
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{
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/// <summary>
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/// A user-wide mutex that ensures that only one instance runs at a time.
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/// </summary>
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public class SingleInstanceMutex : IDisposable
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{
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/// <summary>
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/// The mutex used for process synchronization.
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/// </summary>
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private readonly Mutex _appMutex;
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/// <summary>
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/// Represents if the mutex was created on the system or it already existed.
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/// </summary>
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public bool CreatedNew { get; }
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/// <summary>
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/// Determines if the instance is disposed and should not be used anymore.
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/// </summary>
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public bool IsDisposed { get; private set; }
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/// <summary>
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/// Initializes a new instance of <see cref="SingleInstanceMutex"/> using the given mutex name.
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/// </summary>
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/// <param name="name">The name of the mutex.</param>
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public SingleInstanceMutex(string name)
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{
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_appMutex = new Mutex(false, $"Local\\{name}", out var createdNew);
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CreatedNew = createdNew;
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}
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/// <summary>
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/// Releases all resources used by this <see cref="SingleInstanceMutex"/>.
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/// </summary>
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public void Dispose()
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{
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Dispose(true);
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GC.SuppressFinalize(this);
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}
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/// <summary>
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/// Releases the mutex object.
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/// </summary>
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/// <param name="disposing"><c>True</c> if called from <see cref="Dispose"/>, <c>false</c> if called from the finalizer.</param>
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protected virtual void Dispose(bool disposing)
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{
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if (IsDisposed)
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return;
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if (disposing)
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{
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_appMutex?.Dispose();
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}
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IsDisposed = true;
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}
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}
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}
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