我正在尝试自动执行某些操作,其中一项操作是切换到远程Linux机器上的技术用户。该过程如下所示:使用“普通”用户登录,然后使用
切换sudo /bin/rootsh -i -u techUser
给技术用户。
这是我正在处理的Groovy代码示例:
import com.jcraft.jsch.JSch
import com.jcraft.jsch.Session
import com.jcraft.jsch.Channel
import com.jcraft.jsch.ChannelExec
import com.jcraft.jsch.JSchException
class Main {
static void main(String[] args) {
int responseCode = 0
String responseText = ""
def targetHost = "targetHost"
def targetUser = "targetUser"
def technicalUser= "technicalUser"
def targetPass = "targetPass"
def targetPort = 22
Properties configConnection = new Properties()
configConnection.put("StrictHostKeyChecking", "no")
configConnection.put("PreferredAuthentications", "publickey,keyboard-interactive,password")
JSch jsch = new JSch()
try {
Session targetSession = jsch.getSession(targetUser, targetHost, targetPort)
targetSession.setPassword(targetPass)
targetSession.setConfig(configConnection)
targetSession.connect()
Channel channel = targetSession.openChannel("exec")
((ChannelExec) channel).setCommand("echo 'targetPass' | sudo -S -p /bin/rootsh -i -u technicalUser")
((ChannelExec) channel).setPty(true)
final ByteArrayOutputStream baos = new ByteArrayOutputStream()
((ChannelExec) channel).setErrStream(baos)
channel.setInputStream(null)
InputStream is = channel.getInputStream()
channel.connect()
byte[] tmp = new byte[1024]
while (true) {
while (is.available() > 0) {
int i = is.read(tmp, 0, 1024)
if (i < 0)
break
responseText = new String(tmp, 0, i)
}
if (channel.isClosed()) {
responseText = new String(baos.toByteArray())
responseCode = channel.getExitStatus()
break
}
try {
Thread.sleep(1000);
} catch (Exception ee) {
println("[ERROR] " + ee.getMessage())
}
}
channel.disconnect()
targetSession.disconnect()
println("RESULT: code: " + responseCode + ", text: \"" + responseText + "\"")
} catch (JSchException e) {
println("[ERROR] Exception, problem with connection: " + e.getMessage())
}
}
}
结果是:
RESULT: code: 1, text: ""
当我设置为
时((ChannelExec) channel).setPty(false)
结果是:
RESULT: code: 1, text: "/bin/rootshSorry, user targetUser is not allowed to execute '/bin/bash' as technicalUser on targetHost."
当我从以下行中删除密码时:
((ChannelExec) channel).setCommand("echo '' | sudo -S -p /bin/rootsh -i -u technichalUser")
结果是:
RESULT: code: 1, text: "/bin/rootsh/bin/rootsh
Sorry, try again.
/bin/rootsh
/bin/rootsh
sudo: pam_authenticate: Authentication information cannot be recovered"
当我设置以下命令时:
((ChannelExec) channel).setCommand("sudo -S -p /bin/rootsh -i -u technichalUser")
根本没有响应,因为进程一直在运行(进程正在等待密码)
如果某人已经解决了这样的问题或者类似问题,我会非常乐意帮助你。
答案 0 :(得分:0)
您无法使用输入重定向将密码传递给sudo
,至少不能使用默认配置。
因此,这不起作用:
echo 'targetPass' | sudo -S -p /bin/rootsh -i -u technicalUser`
您是否在交互式终端中尝试过?我认为它也不适用。
您必须将密码写入频道输入流(称为&#34;输出流&#34;在JSch中)。
您可能需要启用TTY / PTY。请参阅Use JSch sudo example and Channel.setPty for running sudo command on remote host。