fix for special character handling

[Mark Cooper]

I have run into a few problems with 'special' characters within router banners and/or
prompts.

The following diff against clogin should fix the banner containing expected prompt
character
and also any special characters in the prompt.

376c376,382
<               -re "$p_prompt"         { send "$userpswd\r" }
---
>               -re "$p_prompt"         { send "$userpswd\r"
>                                               expect {
>                                                       eof                     {
send_user "\nError: Couldn't login\n"; wait; return 1 }
>                                                       -re "$u_prompt"         { send
"$user\r" }
>                                                       "$prompt"               { set
in_proc 0; return 0 }
>                                               }
>                                       }
394d399
<       "$prompt"       { break; }
449c454,455
<       regsub -all "\[)(]" $prompt {\\&} reprompt
---
>       regsub -all {\[} $prompt {\\&} reprompt
>       regsub -all {\]} $reprompt {\\&} reprompt


The following diff against rancid should fix handling of special characters in the prompt.

1131c1131,1134
<       if (!defined($prompt)) {$prompt = ($_ =~ /^([^#]+#)/)[0]; }
---
>       if (!defined($prompt)) {
>               $prompt = ($_ =~ /^([^#]+#)/)[0];
>               $prompt =~ s/([][])/\\$1/g;
>               }


The following diff against blogin should fix problems with there being a banner on a
nortel.

367c367,373
<               -re "$p_prompt"         { send "$userpswd\r" }
---
>               -re "$p_prompt"         { send "$userpswd\r"
>                                               expect {
>                                                       eof                     {
send_user "\nError: Couldn't login\n"; wait; return 1 }
>                                                       -re "$u_prompt"         { send
"$user\r" }
>                                                       "$prompt"               { set
in_proc 0; return 0 }
>                                               }
>                                       }
385d390
<       "$prompt"       { break; }


BTW, all these diffs are against 2.2b7 with Mordechai T. Abzug brancid patches installed.
I obviously
really need to provide these as full context diffs against 2.2b8....d'oh

HTH

Mark