Can't match one of the expressions in telnet session

john brown

I'm telnetting into a router. Apart from the fact I can't seem to
view the output when iniciating the session, I can't match one of the
expressions using Net::Telnet. I can telnet into the router manually
without a problem. I'm running a sniffer at the same time just to see
what's happening behind the scenes. The computer does an ARP request
looking for the router's direction, but that seems to be it. I don't
think any data actually gets passed to iniciate telnet. I'm using the
following code:

1. use Net::Telnet;
2. $telnet = new Net::Telnet ( Timeout=>10,
3. Errmode=>'die');
4. $telnet->open('192.168.0.1');
5. $telnet->waitfor('/login:$/i');
6. $telnet->print('admin');
7. $telnet->waitfor('/Password: $/i');
8. $telnet->print('admin');
9. $telnet->waitfor('/\$ $/i');
10. $telnet->print('?');
11. $output = $telnet->waitfor('/adsl> \$ $/i');
12. print $output;

After logging into the router manually, confirming the
"login/password", I receive the prompt(exactly as it is written,
including spaces:)

login:admin
Password: *****

Login successful
--> (There is a space after the arrow to the right)

Here is the error I'm receiving:

pattern match timed-out at telnet.pl line 9

Should I assume that the script is atleast making it to that point.
I'm referring to the confirmation of the "login/passord". Any help
would be appreciated. Thanks in advance.

Jul 19 '05 #1

Joe Smith

john brown wrote:

9. $telnet->waitfor('/\$ $/i');
11. $output = $telnet->waitfor('/adsl> \$ $/i');

Login successful
--> (There is a space after the arrow to the right)

Line 9 says to wait for a dollar-sign and space.
Line 11 says to wait for "adsl> " and a dollar-sign and space.
The last line quoted above has two hyphens, a right-angle
bracket, and a space. No dollar sign.

Why are you waiting for a dollar sign if the prompt uses
an angle bracket?
-Joe

Jul 19 '05 #2

john brown

Joe Smith <Jo*******@inwap.com> wrote in message news:<qN75c.13032$Cb.304070@attbi_s51>...

john brown wrote:

9. $telnet->waitfor('/\$ $/i');
11. $output = $telnet->waitfor('/adsl> \$ $/i');

Login successful
--> (There is a space after the arrow to the right)

Line 9 says to wait for a dollar-sign and space.
Line 11 says to wait for "adsl> " and a dollar-sign and space.
The last line quoted above has two hyphens, a right-angle
bracket, and a space. No dollar sign.

Why are you waiting for a dollar sign if the prompt uses
an angle bracket?
-Joe

Joe,
Good damn question? The original script was written to wait for a
"bash$"
prompt. I edited the script, but didn't catch that. Sometimes after
'/.m\$ ..?##/\\//\ $i /' things can get a little confusing. I'll try
it again. Thanks alot.

Jul 19 '05 #3