updown/jellyfish/demo/module/user.cs

using System;
using System.Text;
using System.Collections.Generic;
using System.Runtime.InteropServices;

namespace ocean
{
    public enum EM_GROUP
    {//权限类别
        EUser_Level0 = 0,   //未登录
        EUser_Level1,       //OP
        EUser_Level2,       //admin
        EUser_Level3,       //system
        EUser_Level4,       //root
    };

    public struct TUser
    {//用户信息
        [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 32)]
        public string name;
        public uint group;
        public uint limit;
    };

    public struct TUserLimit
    {//用户权限
        [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 32)]
        public string name;
        [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 32)]
        public string desc;
    };

    public class user
    {
        /****************************************************
            *Function: 初始化模块 
            *Intput:   NULL
            *Output:   NULL
            *Return:   成功返回0, 失败返回错误码
        ******************************************************/
        [DllImport(@"user.dll", EntryPoint = "user_init", CharSet = CharSet.Ansi, CallingConvention = CallingConvention.StdCall)]
        public static extern int init();

        /****************************************************
            *Function: 释放模块 资源
            *Intput:   NULL
            *Output:   NULL
            *Return:   成功返回0, 失败返回错误码
        ******************************************************/
        [DllImport(@"user.dll", EntryPoint = "user_deinit", CharSet = CharSet.Ansi, CallingConvention = CallingConvention.StdCall)]
        public static extern int deinit();

        /****************************************************
            *Function: 用户登陆,成功后调用get_cur_limit获取权限
            *Intput:   lpUser 用户名
                       lpPwd  密码
            *Output:   NULL
            *Return:   成功返回0, 失败返回错误码
        ******************************************************/
        [DllImport(@"user.dll", EntryPoint = "login", CharSet = CharSet.Ansi, CallingConvention = CallingConvention.StdCall)]
        public static extern int login(string lpUser, string lpPwd);

        /****************************************************
            *Function: 用户退出登陆 
            *Intput:   无
            *Output:   NULL
            *Return:   成功返回0, 失败返回错误码
        ******************************************************/
        [DllImport(@"user.dll", EntryPoint = "logout", CharSet = CharSet.Ansi, CallingConvention = CallingConvention.StdCall)]
        public static extern int logout();

        /****************************************************
            *Function: 修改用户信息, 权限足够才能调用
            *Intput:   lpOldUser 要修改的用户名
                       lpNewUser 新的用户名 默认值不修改
                       group     新的组别 admin/system 默认值不修改
                       limit     新的权限 默认值不修改
            *Output:   NULL
            *Return:   成功返回0, 失败返回错误码
        ******************************************************/
        [DllImport(@"user.dll", EntryPoint = "change_user", CharSet = CharSet.Ansi, CallingConvention = CallingConvention.StdCall)]
        public static extern int update(string lpOldUser, string lpNewUser, uint group = 0, uint limit = 0);

        /****************************************************
            *Function: 修改用户密码
            *Intput:   lpUser 用户名
                       lpOldPwd 旧密码
                       lpNewPwd 新密码
            *Output:   NULL
            *Return:   成功返回0,失败返回错误码
        ******************************************************/
        [DllImport(@"user.dll", EntryPoint = "change_pwd", CharSet = CharSet.Ansi, CallingConvention = CallingConvention.StdCall)]
        public static extern int change_pwd(string lpUser, string lpOldPwd, string lpNewPwd);

        /****************************************************
            *Function: 恢复默认密码, 权限足够才能调用
            *Intput:   lpUser 用户名
            *Output:   NULL
            *Return:   成功返回0,失败返回错误码
        ******************************************************/
        [DllImport(@"user.dll", EntryPoint = "clear_pwd", CharSet = CharSet.Ansi, CallingConvention = CallingConvention.StdCall)]
        public static extern int clear_pwd(string lpUser);

        /****************************************************
            *Function: 增加一个用户
            *Intput:   lpUser 用户名
                       lpPwd  密码
                       group  组别 admin/system
                       limit  权限
            *Output:   NULL
            *Return:   成功返回0,失败返回错误码
        ******************************************************/
        [DllImport(@"user.dll", EntryPoint = "add_user", CharSet = CharSet.Ansi, CallingConvention = CallingConvention.StdCall)]
        public static extern int create(string lpUser, string lpPwd, uint group, uint limit);

        /****************************************************
            *Function: 删除一个用户
            *Intput:   lpUser 用户名
            *Output:   NULL
            *Return:   成功返回0,失败返回错误码
        ******************************************************/
        [DllImport(@"user.dll", EntryPoint = "del_user", CharSet = CharSet.Ansi, CallingConvention = CallingConvention.StdCall)]
        public static extern int remove(string lpUser);

        /****************************************************
            *Function: 获取当前用户名
            *Intput:   NULL
            *Output:   pszname 从这里返回名称
            *Return:   成功返回0，失败返回错误码
        ******************************************************/
        [DllImport(@"user.dll", EntryPoint = "get_cur_users", CharSet = CharSet.Ansi, CallingConvention = CallingConvention.StdCall)]
        private static extern int get_cur_users(StringBuilder pszname);
        public static string cur_user()
        {
            StringBuilder pszname = new StringBuilder(32);
            get_cur_users(pszname);
            return pszname.ToString();
        }

        /****************************************************
            *Function: 获取当前用户组别
            *Intput:   NULL
            *Output:   NULL
            *Return:   返回当前用户的组别
        ******************************************************/
        [DllImport(@"user.dll", EntryPoint = "get_user_group", CharSet = CharSet.Ansi, CallingConvention = CallingConvention.StdCall)]
        public static extern uint cur_group(uint lpuser = 0);

        /****************************************************
            *Function: 获取当前用户权限
            *Intput:   NULL
            *Output:   NULL
            *Return:   返回当前用户的权限
        ******************************************************/
        [DllImport(@"user.dll", EntryPoint = "get_user_limit", CharSet = CharSet.Ansi, CallingConvention = CallingConvention.StdCall)]
        public static extern uint cur_limit(uint lpuser = 0);

        /****************************************************
            *Function: 获取用户列表
            *Intput:   pstUser 用户缓冲区，可以传NULL获取数量
            *Output:   pstUser 用户缓冲区
            *Return:   成功返回0, 失败返回错误码<0
        ******************************************************/
        [DllImport(@"user.dll", EntryPoint = "get_user_list", CharSet = CharSet.Ansi, CallingConvention = CallingConvention.StdCall)]
        private static extern int get_user_list(IntPtr ptr);
        public static int GetUserCount()
        {
            return get_user_list(IntPtr.Zero);
        }

        public static int GetAllUser(string []puser)
        {
            IntPtr ptr;
            int len = 0;
            int count = 0;
            TUser info = new TUser();
            count = get_user_list(IntPtr.Zero);
            if (count > 0)
            {
                len = Marshal.SizeOf(info);
                ptr = Marshal.AllocHGlobal(len * count);
                get_user_list(ptr);
                for (int i = 0; i < count; i++)
                {
                    info = (TUser)Marshal.PtrToStructure(
                        ptr + len * i, typeof(TUser));
                    puser[i] = info.name;
                }
                Marshal.FreeHGlobal(ptr);   //释放非托管内存
            }
            return count;
        }

        /****************************************************
            *Function: 判断当前用户是否有某项权限
            *Intput:   pLimit 权限项名称
            *Output:   NULL
            *Return:   返回1标识有，0标识没有
        ******************************************************/
        [DllImport(@"user.dll", EntryPoint = "chk_user_limit", CharSet = CharSet.Ansi, CallingConvention = CallingConvention.StdCall)]
        public static extern int check(string pLimit, uint lpuser = 0);

        /****************************************************
            *Function: 增加一项权限,最多支持32项权限
            *Intput:   index 索引，区间[0,32)
                       pszname 名称，不能重复
                       pszdesc 描述标题，显示在界面上的，若为空则显示名称
            *Output:   NULL
            *Return:   成功返回0，失败返回错误码
            *PS: 在需要检测权限的代码中使用chk_user_limit函数,
                 可根据权限名判断当前用户是否有该项权限
        ******************************************************/
        [DllImport(@"user.dll", EntryPoint = "add_limit", CharSet = CharSet.Ansi, CallingConvention = CallingConvention.StdCall)]
        public static extern int add_limit(string pLimit, string title);

        /****************************************************
            *Function: 删除最后一项权限
            *Intput:   NULL
            *Output:   NULL
            *Return:   成功返回0，失败返回错误码
        ******************************************************/
        [DllImport(@"user.dll", EntryPoint = "del_last_limit", CharSet = CharSet.Ansi, CallingConvention = CallingConvention.StdCall)]
        public static extern int del_limit();
    }
}