使用 JSch 跳过 Kerberos 身份验证提示 [重复]

Posted 2023-03-04

【中文标题】使用 JSch 跳过 Kerberos 身份验证提示 [重复]

【英文标题】：Skipping Kerberos authentication prompts with JSch [duplicate]

【发布时间】：2015-06-22 13:10:49

【问题描述】：

我在下面的Ssh Java 类中使用Connect() 方法，以便使用 SSH (JSch) 连接到服务器并在服务器中运行命令。

问题是运行Connect()时服务器提示下一条消息：

Kerberos username [********]: 

Kerberos password for ********: 

为了继续运行，我需要手动按两次 Enter 键，一次输入用户名，一次输入密码。我已经尝试添加下一个代码：

// Press ENTER
Robot r = new Robot();
r.keyPress(KeyEvent.VK_ENTER);
r.keyRelease(KeyEvent.VK_ENTER);

但此代码仅适用于用户名，我不知道如何在服务器要求输入密码时自动按 ENTER。到目前为止，我已尝试将另一个代码 sn-p 放在

下方

session.connect();

行。

package ConnectSSH;

import java.awt.Robot;
import java.awt.event.KeyEvent;
import java.io.*;

import com.jcraft.jsch.ChannelExec;
import com.jcraft.jsch.JSch;
import com.jcraft.jsch.Session;
import com.jcraft.jsch.UserInfo;

public class Ssh

    private static final String user = "********";
    private static final String host = "********";
    private static final Integer port = 22;
    private static final String pass = "********";

    public void Connect() throws Exception
        JSch jsch = new JSch();
        Session session = jsch.getSession(user, host, port);
        UserInfo ui = new SUserInfo(pass, null);
        session.setUserInfo(ui);
        session.setPassword(pass);
        //Press ENTER
        Robot r = new Robot();
        r.keyPress(KeyEvent.VK_ENTER);
        r.keyRelease(KeyEvent.VK_ENTER);
        session.connect();
        ChannelExec channelExec = (ChannelExec)session.openChannel("exec");
        InputStream in = channelExec.getInputStream();
        channelExec.setCommand("RUN COMMAND");
        channelExec.connect();
        BufferedReader reader = new BufferedReader(new InputStreamReader(in));
        String linea = null;
        int index = 0;
        while ((linea = reader.readLine()) != null) 
            System.out.println(++index + " : " + linea);
        
        channelExec.disconnect();
        session.disconnect();
     

这是SUserInfo 类

package ConnectSSH;

import com.jcraft.jsch.UserInfo;

public class SUserInfo implements UserInfo 

    private String password;
    private String passPhrase;

    public SUserInfo (String password, String passPhrase) 
        this.password = password;
        this.passPhrase = passPhrase;
    

    public String getPassphrase() 
        return passPhrase;
    

    public String getPassword() 
        return password;
    

    public boolean promptPassphrase(String arg0) 
        return true;
    

    public boolean promptPassword(String arg0) 
        return false;
    

    public boolean promptYesNo(String arg0) 
        return true;
    

    public void showMessage(String arg0) 
        System.out.println("SUserInfo.showMessage()");
    

这是记录器返回的内容：

INFO: Connecting to ****** port 22
INFO: Connection established
INFO: Remote version string: SSH-2.0-Sun_SSH_1.1.2
INFO: Local version string: SSH-2.0-JSCH-0.1.52
INFO: CheckCiphers: aes256-ctr,aes192-ctr,aes128-ctr,aes256-cbc,aes192-cbc,aes128-cbc,3des-ctr,arcfour,arcfour128,arcfour256
INFO: aes256-ctr is not available.
INFO: aes192-ctr is not available.
INFO: aes256-cbc is not available.
INFO: aes192-cbc is not available.
INFO: CheckKexes: diffie-hellman-group14-sha1,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521
INFO: diffie-hellman-group14-sha1 is not available.
INFO: CheckSignatures: ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521
INFO: SSH_MSG_KEXINIT sent
INFO: SSH_MSG_KEXINIT received
INFO: kex: server: gss-group1-sha1-toWM5Slw5Ew8Mqkay+al2g==,diffie-hellman-group-exchange-sha1,diffie-hellman-group1-sha1
INFO: kex: server: ssh-rsa,ssh-dss
INFO: kex: server: aes128-ctr,aes128-cbc,arcfour,3des-cbc,blowfish-cbc,aes192-ctr,aes192-cbc,aes256-ctr,aes256-cbc
INFO: kex: server: aes128-ctr,aes128-cbc,arcfour,3des-cbc,blowfish-cbc,aes192-ctr,aes192-cbc,aes256-ctr,aes256-cbc
INFO: kex: server: hmac-md5,hmac-sha1,hmac-sha1-96,hmac-md5-96
INFO: kex: server: hmac-md5,hmac-sha1,hmac-sha1-96,hmac-md5-96
INFO: kex: server: none,zlib
INFO: kex: server: none,zlib
INFO: kex: server: ar-EG,ar-SA,bg-BG,ca-ES,cs-CZ,da-DK,de,de-AT,de-CH,de-DE,de-LU,el-CY,el-GR,en-AU,en-CA,en-GB,en-IE,en-MT,en-NZ,en-US,es,es-AR,es-BO,es-CL,es-CO,es-CR,es-EC,es-ES,es-GT,es-MX,es-NI,es-PA,es-PE,es-PY,es-SV,es-UY,es-VE,et-EE,fi-FI,fr,fr-BE,fr-CA,fr-CH,fr-FR,fr-LU,he-IL,hi-IN,hr-HR,hu-HU,is-IS,it,it-IT,ja-JP,kk-KZ,ko,ko-KR,lt-LT,lv-LV,mk-MK,mt-MT,nb-NO,nl-BE,nl-NL,nn-NO,pl,pl-PL,pt-BR,pt-PT,ro-RO,ru,ru-RU,sh-BA,sk-SK,sl-SI,sq-AL,sr-CS,sv,sv-SE,th-TH,tr-TR,uk-UA,zh,zh-CN,zh-HK,zh-TW,ar,ca,cz,da,el,et,fi,he,hu,ja,lt,lv,nl,no,no-NO,no-NY,nr,pt,sr-SP,sr-YU,th,tr,i-default
INFO: kex: server: ar-EG,ar-SA,bg-BG,ca-ES,cs-CZ,da-DK,de,de-AT,de-CH,de-DE,de-LU,el-CY,el-GR,en-AU,en-CA,en-GB,en-IE,en-MT,en-NZ,en-US,es,es-AR,es-BO,es-CL,es-CO,es-CR,es-EC,es-ES,es-GT,es-MX,es-NI,es-PA,es-PE,es-PY,es-SV,es-UY,es-VE,et-EE,fi-FI,fr,fr-BE,fr-CA,fr-CH,fr-FR,fr-LU,he-IL,hi-IN,hr-HR,hu-HU,is-IS,it,it-IT,ja-JP,kk-KZ,ko,ko-KR,lt-LT,lv-LV,mk-MK,mt-MT,nb-NO,nl-BE,nl-NL,nn-NO,pl,pl-PL,pt-BR,pt-PT,ro-RO,ru,ru-RU,sh-BA,sk-SK,sl-SI,sq-AL,sr-CS,sv,sv-SE,th-TH,tr-TR,uk-UA,zh,zh-CN,zh-HK,zh-TW,ar,ca,cz,da,el,et,fi,he,hu,ja,lt,lv,nl,no,no-NO,no-NY,nr,pt,sr-SP,sr-YU,th,tr,i-default
INFO: kex: client: diffie-hellman-group1-sha1,diffie-hellman-group-exchange-sha1,diffie-hellman-group-exchange-sha256,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521
INFO: kex: client: ssh-rsa,ssh-dss,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521
INFO: kex: client: aes128-ctr,aes128-cbc,3des-ctr,3des-cbc,blowfish-cbc
INFO: kex: client: aes128-ctr,aes128-cbc,3des-ctr,3des-cbc,blowfish-cbc
INFO: kex: client: hmac-md5,hmac-sha1,hmac-sha2-256,hmac-sha1-96,hmac-md5-96
INFO: kex: client: hmac-md5,hmac-sha1,hmac-sha2-256,hmac-sha1-96,hmac-md5-96
INFO: kex: client: none
INFO: kex: client: none
INFO: kex: client: 
INFO: kex: client: 
INFO: kex: server->client aes128-ctr hmac-md5 none
INFO: kex: client->server aes128-ctr hmac-md5 none
INFO: SSH_MSG_KEXDH_INIT sent
INFO: expecting SSH_MSG_KEXDH_REPLY
INFO: ssh_rsa_verify: signature true
WARN: Permanently added '********' (RSA) to the list of known hosts.
INFO: SSH_MSG_NEWKEYS sent
INFO: SSH_MSG_NEWKEYS received
INFO: SSH_MSG_SERVICE_REQUEST sent
INFO: SSH_MSG_SERVICE_ACCEPT received
INFO: Authentications that can continue: gssapi-with-mic,publickey,keyboard-interactive,password
INFO: Next authentication method: gssapi-with-mic

然后显示下一条消息

Kerberos username [******]: Kerberos password for ********:

其中 Enter 键是机器人自动为用户名按下的，但需要从键盘按下 Enter 键来输入密码。

【参考方案1】：

您已将 Kerberos/GSSAPI 身份验证设置为首选，但您似乎并没有实际使用/想要它。因为您没有为 Kerberos 提示指定任何用户名或密码。

当在客户端 PC 上安装 Kerberos 或服务器开始支持 Kerberos 时，此问题可能会自发出现。

解决方案是从 JSch 中的首选身份验证方法列表中删除 Kerberos/GSSAPI (gssapi-with-mic)：

session.setConfig(
    "PreferredAuthentications", "publickey,keyboard-interactive,password");

参考：SFTP connection through Java asking for weird authentication。

【讨论】：

非常感谢！您为我们节省了很多时间！

【参考方案2】：

尝试添加这个：

config.put("PreferredAuthentications","publickey,keyboard-interactive,password");
session.setConfig(config);

【讨论】：

这与接受的答案有何不同？

@MartinPrikryl 它的格式很差，信息量少:)