使用expect库在unix上的c ++编程中自动执行任务。 [英] Using expect library to automate task in c++ programming on unix.

问题描述

嗨朋友们，

我正在unix上创建一个程序，它将通过ip - >（xx.xxx.xx.xx）telnet远程主机并在远程主机上运行命令并显示远程主机返回的响应。

我已经google了很多，我发现使用expect库可能有帮助，所以我使用expect库而不用tcl。



我这样做

Hi friends,
I am creating a program on unix which will telnet a remote host on ip -->(xx.xxx.xx.xx) and run a command on the remote host and display the response returned by the remote host.
I have googled a lot and I found using the expect library might help so I am using expect library without tcl.

I am doing this

string myUser="97.253.46.90";<br />
string myPORT="23";<br />
myFD = exp_spawnl("telnet","telnet",myUser,myPORT,(char *)0);<br />

这在myFD中返回4我接下来要做什么？

请帮助我们各位我是codeproject的新手所以请不要介意我是否犯过任何错误。

谢谢和问候。

rocksean30

this returns 4 in myFD what should I do next ?
Please help me guys I am new to codeproject so please dont mind if I have made any mistakes.
Thanks and regards.
rocksean30

推荐答案

参见 http://www.eso.org/projects/vlt/sw-dev/tcl8.3.3/expect5.32/libexpect.3.html [ ^ ]。

下一步是等待结果并检查它是否有你想要的结果。

这就是我做的。





enum HOST_STATE {AVAILABLE，

BUSY，

CONFIRM，

UNKNOWN，

FAILED，

REFUSED};





string myUser =97.253。 46.90;

string myPORT =23;

int connected = 0;

int myFD = exp_spawnl（telnet，telnet ，myUser，myPORT，（char *）0）;

sleep（1）; //等一下才能得到结果



exp_timeout = CONNECTION_EXPIRY_PERIOD;



int expresult = exp_expectl（fd ，exp_glob，权限被拒绝，未知，

exp_glob，密码无效，未知，

exp_glob，访问被拒绝，未知，

exp_glob，你确定要继续吗，确认，

exp_glob，忙，忙碌，

exp_glob，未知主机，未知，

exp_glob，无法连接到远程主机，FAILED，

exp_glob，失败，FAILED，

exp_glob，连接被拒绝 ，REFUSED，

exp_glob，外国主持人关闭，FAILED，

exp_glob，已连接，可用，

exp_end）;



// c out<<connect（）结果：<< expresult<< endl;



error = 0;

switch （表达）

{

案例可用：

{

cout<<Telnet host available< ;<结束;

休息;

}

case CONFIRM：

{

cout< ;<CONFIRM RSA密钥指纹<< endl;

cout<<是或否需要被解雇<< endl;

休息;

}

案例忙碌：

{

cout<<Telnet host busy;

错误= 1;

休息;

}

case UNKNOWN：

{

cout<<Telnet host unknown<< endl;

error = 1;

break;

}

case FAILED：

{

cout<<Telnet host failed<< endl;

错误= 1;

休息;

}

案例拒绝：

{

cout<<Telnet主机拒绝连接<< endl;

错误= 1;

休息;

}

案例EXP_TIMEOUT：

{

cout<<Telnet主机超时<< endl;

错误= 1;

休息;

}

案例EXP_ABEOF：

{

cout<<预计abbnormal eof<< endl;

error = 1 ;

休息;

}

默认：

{

cout<< ;Telnet主机问题<< endl;

错误= 1;

休息;

}

}



如果（错误）

{

connected = 0;

返回0;

}

其他

{

connected = 1;

返回1;

}



谢谢和问候

rocksean30

The next step is to wait for the result and check it you've got the desired results.
This is what I did.


enum HOST_STATE { AVAILABLE,
BUSY,
CONFIRM,
UNKNOWN,
FAILED,
REFUSED};


string myUser="97.253.46.90";
string myPORT="23";
int connected=0;
int myFD = exp_spawnl("telnet","telnet",myUser,myPORT,(char *)0);
sleep(1); // wait a second before get result

exp_timeout = CONNECTION_EXPIRY_PERIOD;

int expresult = exp_expectl(fd,exp_glob,"Permission denied",UNKNOWN,
exp_glob,"Invalid password",UNKNOWN,
exp_glob,"Access denied",UNKNOWN,
exp_glob,"Are you sure you want to continue",CONFIRM,
exp_glob,"busy",BUSY,
exp_glob,"Unknown host",UNKNOWN,
exp_glob,"Unable to connect to remote host",FAILED,
exp_glob,"failed",FAILED,
exp_glob,"Connection refused",REFUSED,
exp_glob,"closed by foreign host",FAILED,
exp_glob,"Connected to", AVAILABLE,
exp_end);

//cout<<"connect() Result: "<<expresult<<endl;

error = 0;
switch (expresult)
{
case AVAILABLE:
{
cout<<" Telnet host available " << endl;
break;
}
case CONFIRM:
{
cout<<"CONFIRM RSA key fingerprint"<<endl;
cout<<"yes or no need to be fired"<<endl;
break;
}
case BUSY:
{
cout<<"Telnet host busy";
error = 1;
break;
}
case UNKNOWN:
{
cout<<"Telnet host unknown"<<endl;
error = 1;
break;
}
case FAILED:
{
cout<<"Telnet host failed"<<endl;
error = 1;
break;
}
case REFUSED:
{
cout<<"Telnet host refused connection"<<endl;
error = 1;
break;
}
case EXP_TIMEOUT:
{
cout<<"Telnet host timeout"<<endl;
error = 1;
break;
}
case EXP_ABEOF:
{
cout<<"Expect abbnormal eof"<<endl;
error = 1;
break;
}
default:
{
cout<<"Telnet host problem"<<endl;
error = 1;
break;
}
}

if (error)
{
connected=0;
return 0;
}
else
{
connected=1;
return 1;
}

Thanks & Regards
rocksean30

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