telnetting into a switch

[b_raajkumar]

Hi Guys,

I read through most of the threads regarding this but I am not able to do more than connecting into a switch.

Here is the case: I need to connect to a switch via telnet and then read the commands, if password then supply the password and then supply two commands which would generate the config file which I read it into a tmp file and then I create a webpage based on that. Is there a simply way of doing this? Ok if no, I am able to connect to the switch and read the first output it generates ( a welcom message) but the second line would ask for the password which I am not able to read.

Here is the code:

$fp = fsockopen ("10.0.2.9", 23, $errno, $errstr, 60) or die("Connection failed.");

if (!$fp)
{
echo " not connected";
echo "$errstr ($errno)<br>\n";
}
else
{
flush();
$buff = fgets($fp,4096);
$line = fgets($fp,1024);

$line = fgets($fp, 1024);
echo $line;

flush();
$sec = fgets($fp, 1024);
echo $sec;
echo $sec1;

}

Can you suggest guys?

Thanks,

Raaj

[[deleted]]

I've never worked with telneting into a switch before, but I think I've done programs to telnet into another system.

Can you not look for any string matching "password: " in the buffer you are reading? And if found, then call fwrite to write the password?

-sridhar

[b_raajkumar]

HI Sridhar,

Actually I am echoing all the data I read from the server. There is a welcome message which I am able to read and print. Immediately after the welcome message it prompts for a password, this line I am not able to read nor print.

Raaj

[[deleted]]

What kind of protocol is the switch? telnet? Because I'm not able to read any data when I do a regular telnet into a system using PHP. I'm able to write a telnet script in C and perl, but not PHP.

Can you send me code which shows the part where you initiate the connection and read the welcome msg?

-sridhar

[b_raajkumar]

Hi Sridhar,

I am using telnet. If you could pass on the c and perl script I think I would solve the problem.

Thanks,

Raaj