{"id":610,"date":"2010-02-06T00:12:00","date_gmt":"2010-02-05T16:12:00","guid":{"rendered":"http:\/\/blog.jixin.ntxz.net\/?p=610"},"modified":"2010-07-30T15:39:31","modified_gmt":"2010-07-30T07:39:31","slug":"telnet-c-%e6%89%a7%e8%a1%8c%e5%91%bd%e4%bb%a4","status":"publish","type":"post","link":"http:\/\/www.ntxz.net\/?p=610","title":{"rendered":"telnet c# \u6267\u884c\u547d\u4ee4"},"content":{"rendered":"

<\/p>\n

using System;
using System.Text;
using System.Net.Sockets;<\/font><\/p>\n

\/\/\/ <summary>
\/\/\/ Summary description for ClassTelnet
\/\/\/ <\/summary>
public class ClassTelnet
{
TcpClient telnet_tcp_client;<\/font><\/p>\n

    public string strhost;      \/\/ IP \u5730\u5740
    public string strusername; \/\/ username
    public string strpassword; \/\/ password
    private int ilogin_wait_time = 200; \/\/\u7f51\u7edc\u5ef6\u8fdf\u7b49\u5f85\u65f6\u95f4
    private int irecv_wait_time = 100; \/\/\u7f51\u7edc\u5ef6\u8fdf\u7b49\u5f85\u65f6\u95f4<\/font><\/p>\n

    \/\/Telnet protocal key
    enum Verbs
    {
        WILL = 251,
        WONT = 252,
        DO = 253,
        DONT = 254,
        IAC = 255
    }
    public ClassTelnet()
    {
    }
    \/**
     * Telnet \u5173\u95ed\u8fde\u63a5
     *\/
    public void close_telnet()
    {
        try
        {
            if (telnet_tcp_client == null)
            {
                return;
            }
            if (telnet_tcp_client.Connected)
            {
                telnet_tcp_client.Close();
            }
        }
        catch (Exception ex)
        {
            Consule.Write(“\u5f02\u5e38”);
        }
    }<\/font><\/p>\n

    \/**
     * Telnet\u8fde\u63a5\u5230\u670d\u52a1\u5668
     *\/
    public bool open_connect()
    {
        bool blresult;
        string strtemp;<\/font><\/p>\n

blresult = true;<\/font><\/p>\n

        try
        {
            \/\/ new socket
            telnet_tcp_client = new TcpClient(this.strhost, 23);<\/font><\/p>\n

            System.Threading.Thread.Sleep(ilogin_wait_time);
            \/\/ read host info data
            strtemp = recv_data_from_host();
            blresult = strtemp.TrimEnd().EndsWith(“:”);
            if (blresult == false)
            {
                Consule.Write(“read host info data error”);
                return blresult;
            }<\/font><\/p>\n

            \/\/ username send to host
            blresult = send_data_to_host(this.strusername + “\\n\\r”);
            if (blresult == false)
            {
                Consule.Write(“username send error”);
                return blresult;
            }<\/font><\/p>\n

            System.Threading.Thread.Sleep(ilogin_wait_time);
            strtemp = recv_data_from_host();
            blresult = strtemp.TrimEnd().EndsWith(“:”);
            if (blresult == false)
            {
                return blresult;
            }<\/font><\/p>\n

            \/\/ password send to host
            blresult = send_data_to_host(this.strpassword + “\\n\\r”);
            if (blresult == false)
            {
                return blresult;
            }
            System.Threading.Thread.Sleep(ilogin_wait_time);
            strtemp = recv_data_from_host();
            if ((strtemp.Trim().LastIndexOf(“#”) > -1) ||
                (strtemp.Trim().LastIndexOf(“$”) > -1) ||
                (strtemp.Trim().LastIndexOf(“>”) > -1))
            {
                blresult = true;
            }
            else
            {
                blresult = false;
            }
        }
        catch (Exception ex)
        {
            blresult = false;
        }
        return blresult;
    }<\/font><\/p>\n

    \/**
     * \u6267\u884c\u547d\u4ee4
     *\/
    public bool exec_command(string strcmd)
    {
        bool blresult;
        string strprompt;<\/font><\/p>\n

blresult = false;
strprompt = “”;<\/font><\/p>\n

        if (telnet_tcp_client.Connected)
        {
            blresult = send_data_to_host(strcmd + “\\n\\r”);
            if (blresult == false)
            {
                return false;
            }
            strprompt = “”;<\/font><\/p>\n

strprompt = recv_data_from_host();<\/font><\/p>\n

            if ((strprompt.Trim().LastIndexOf(“#”) > -1) ||
                (strprompt.Trim().LastIndexOf(“$”) > -1) ||
                (strprompt.Trim().LastIndexOf(“>”) > -1))
            {
                blresult = true;
                return blresult;
            }
        }
        return blresult;
    }<\/font><\/p>\n

    \/**
     * telnet\u5411\u4e3b\u673a\u53d1\u9001\u6570\u636e
     *\/
    public bool send_data_to_host(string strcmd)
    {
        try
        {
            \/\/ socket error\u65f6\u3001return
            if (!telnet_tcp_client.Connected)
            {
                return false;
            }<\/font><\/p>\n

byte[] bbuf = System.Text.ASCIIEncoding.ASCII.GetBytes(strcmd.Replace(“\\0xFF”, “\\0xFF\\0xFF”));<\/font><\/p>\n

            telnet_tcp_client.GetStream().Write(bbuf, 0, bbuf.Length);
        }
        catch(Exception ex)
        {
            return false;
        }
        return true;
    }<\/font><\/p>\n

    \/**
     * Telnet\u4ece\u4e3b\u673a\u63a5\u53d7\u6570\u636e
     *\/
    public string recv_data_from_host()
    {
        int iinput_data;    \/\/data
        int inputverb;
        int inputoption;
        StringBuilder sbtemp;
        NetworkStream ns_temp;
        byte[] bread_buffer;
        StringBuilder sbcomplete_message;
        int iread_bytes_num;<\/font><\/p>\n

sbtemp = new StringBuilder();<\/font><\/p>\n

        \/\/ socket\u6ca1\u6709\u8fde\u63a5\u7684\u65f6\u5019\uff0c\u8fd4\u56de\u7a7a
        if (!telnet_tcp_client.Connected)
        {
            return null;
        }<\/font><\/p>\n

        do
        {
            \/\/ read 1 byte
            iinput_data = telnet_tcp_client.GetStream().ReadByte();
            switch (iinput_data)
            {
                case -1:
                    break;
                case (int)Verbs.IAC: \/\/ \u63a5\u53d7\u7684\u6570\u636e\u6709keyword<\/font><\/p>\n

                    \/\/ read 1 byte
                    inputverb = telnet_tcp_client.GetStream().ReadByte();
                    if (inputverb == -1) break;
                    switch (inputverb)
                    {
                        case (int)Verbs.IAC:
                            sbtemp.Append(inputverb);
                            break;
                        case (int)Verbs.DO:
                        case (int)Verbs.DONT:
                        case (int)Verbs.WILL:
                        case (int)Verbs.WONT:
                            inputoption = telnet_tcp_client.GetStream().ReadByte();
                            if (inputoption == -1) break;
                            telnet_tcp_client.GetStream().WriteByte((byte)Verbs.IAC);
                            telnet_tcp_client.GetStream().WriteByte(inputverb ==
                            (int)Verbs.DO ? (byte)Verbs.WONT : (byte)Verbs.DONT);
                            telnet_tcp_client.GetStream().WriteByte((byte)inputoption);
                            break;
                        default:
                            break;
                    }
                    break;
                default:
                    sbtemp.Append((char)iinput_data);
                    bread_buffer = new byte[8192];
                    sbcomplete_message = new StringBuilder();
                    iread_bytes_num = 0;
                    ns_temp = telnet_tcp_client.GetStream();
                    if (ns_temp.CanRead)
                    {
                        System.Threading.Thread.Sleep(ilogin_wait_time);
                        iread_bytes_num = ns_temp.Read(bread_buffer, 0, bread_buffer.Length);
                        sbtemp.AppendFormat(“{0}”, Encoding.ASCII.GetString(bread_buffer,
                                            0, iread_bytes_num));
                    }
                    break;
            }

            \/\/ timeout
            System.Threading.Thread.Sleep(irecv_wait_time);
        } while (telnet_tcp_client.Available > 0);<\/font><\/p>\n

        \/\/ \u8fd4\u56de\u63a5\u53d7\u7684\u6570\u636e
        return sbtemp.ToString();
    }<\/font><\/p>\n

    \/**
     * \u4f8b\u5b50\u7a0b\u5e8f
     *\/
    public bool exec_sample()
    {
        bool blsts;
        blsts = true;<\/font><\/p>\n

\/\/ \u5173\u95edTelnet\u8fde\u63a5
this.close_telnet();<\/font><\/p>\n

        \/\/ telnet\u8fde\u63a5\u5230\u8fdc\u7a0b\u4e3b\u673a
        blsts = this.open_connect();
        if (blsts == false)
        {
            return blsts;
        }<\/font><\/p>\n

        \/\/ \u5728\u8fdc\u7a0b\u4e3b\u673a\u4e0a\u6267\u884c\u547d\u4ee4
        blsts = this.exec_command(“echo ABC”);
        \/\/ \u6267\u884c\u5931\u8d25
        if (blsts == false)
        {
            Consule.Write(“\u547d\u4ee4\u6267\u884c\u5931\u8d25”);
        }
        return blsts;
    }
}<\/font><\/p>\n

<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

using System;using System.Text;using System.Net.Sockets […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1,8],"tags":[],"class_list":["post-610","post","type-post","status-publish","format-standard","hentry","category-1","category-oldblog"],"views":1182,"_links":{"self":[{"href":"http:\/\/www.ntxz.net\/index.php?rest_route=\/wp\/v2\/posts\/610","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.ntxz.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.ntxz.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.ntxz.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.ntxz.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=610"}],"version-history":[{"count":1,"href":"http:\/\/www.ntxz.net\/index.php?rest_route=\/wp\/v2\/posts\/610\/revisions"}],"predecessor-version":[{"id":781,"href":"http:\/\/www.ntxz.net\/index.php?rest_route=\/wp\/v2\/posts\/610\/revisions\/781"}],"wp:attachment":[{"href":"http:\/\/www.ntxz.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=610"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.ntxz.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=610"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.ntxz.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=610"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}