using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;

namespace DllUtils.Interop
{
    public static class Kernel32
    {
        [DllImport("kernel32.dll", SetLastError = true)]
        public static extern IntPtr OpenProcess(uint dwDesiredAccess, int bInheritHandle, uint dwProcessId);

        [DllImport("kernel32.dll", SetLastError = true)]
        public static extern int CloseHandle(IntPtr hObject);

        [DllImport("kernel32.dll", SetLastError = true)]
        public static extern IntPtr GetProcAddress(IntPtr hModule, string lpProcName);

        [DllImport("kernel32.dll", SetLastError = true)]
        public static extern IntPtr LoadLibraryA(string lpModuleName);

        [DllImport("kernel32.dll", SetLastError = true)]
        public static extern IntPtr GetModuleHandle(string lpModuleName);

        [DllImport("kernel32.dll", SetLastError = true)]
        public static extern IntPtr GetModuleHandleA(string lpModuleName);

        [DllImport("kernel32.dll", SetLastError = true)]
        public static extern IntPtr VirtualAllocEx(IntPtr hProcess, IntPtr lpAddress, IntPtr dwSize, uint flAllocationType, uint flProtect);

        [DllImport("kernel32.dll", SetLastError = true)]
        public static extern int WriteProcessMemory(IntPtr hProcess, IntPtr lpBaseAddress, byte[] buffer, uint size, out int lpNumberOfBytesWritten);

        [DllImport("kernel32.dll", SetLastError = true)]
        public static extern bool ReadProcessMemory(IntPtr hProcess, IntPtr lpBaseAddress, byte[] buffer, uint size, out int lpNumberOfBytesRead);

        [DllImport("kernel32.dll", SetLastError = true)]
        public static extern IntPtr CreateRemoteThread(IntPtr hProcess, IntPtr lpThreadAttribute, IntPtr dwStackSize, IntPtr lpStartAddress,
            IntPtr lpParameter, uint dwCreationFlags, IntPtr lpThreadId);

        [DllImport("kernel32.dll", SetLastError = true, ExactSpelling = true)]
        public static extern Int32 WaitForSingleObject(IntPtr handle, Int32 milliseconds);


        [DllImport("kernel32.dll", SetLastError = true, ExactSpelling = true)]
        public static extern bool VirtualFreeEx(
            IntPtr hProcess,  IntPtr lpAddress,  UIntPtr dwSize,  uint dwFreeType
        );

        [DllImport("kernel32.dll", SetLastError = true, ExactSpelling = true)]
        public static extern bool GetExitCodeThread(IntPtr hThread, out IntPtr lpExitCode);
    }
}