[rancid] run_commands adaptation for Huawei

georg.naggies at r-it.at georg.naggies at r-it.at
Mon Jul 10 11:02:27 UTC 2006


I'm trying to adapt Rancid for Huawei routers, by doing a "3comlogin" from 
Logging in is easy, with minimal adaptation of clogin.

I'm having trouble though to get run_commands to work. I commented out 
this line

-re "^\[^\n\r *]*$reprompt" {send_user -- "$expect_out(buffer)"}

otherwise it breaks out of the one loop, just after the commands are sent, 
immediately. When I do away with the line, I never get to breaking out of 
the loop, though, of course.

Can someone shed light on how clogin distinguishes from a prompt after 
commands are done, breaking out of the loop, from a prompt before 

In other words, what's the difference between 
"^\[^\n\r *]*$reprompt" ?

I have been thinking long on the regular expressions, therefore now trying 
my luck on the list, 

Georg Naggies

(Georg Naggies
IT Service Operations - Support
Raiffeisen Informatik GmbH
A-1020 Wien, Lilienbrunngasse 7-9
T: +43 1/99 3 98 - 9354
F: +43 1/99 3 99 - 1131
M: +43-664-6275053
mailto:georg.naggies at r-it.at


code in question, clogin line 630 to 653

expect {

# eating backspaces, explanation from the list archives
-re "\b+" { exp_continue } 

# presumably, exiting the loop when commands are done
-re "^\[^\n\r *]*$reprompt"     { send_user -- "$expect_out(buffer)" }
# continuing the loop 
-re "^\[^\n\r]*$reprompt." { send_user -- "$expect_out(buffer)" 
                                        exp_continue }
# continuing the loop when seeing new line
-re "\[\n\r]+" { send_user -- "$expect_out(buffer)" 
                                         exp_continue }

# sending spaces to various "More"-prompts
-re "\[^\r\n]*Press <SPACE> to cont\[^\r\n]*"   {
                                  send " "
                                  # bloody ^[[2K after " "
                                  expect {
                                        -re "^\[^\r\n]*\r" {}
-re "^ *--More--\[^\n\r]*"      {
                                  send " "
                                  exp_continue }

-re "^<-+ More -+>\[^\n\r]*"    {
                                  send_user -- "$expect_out(buffer)"
                                  send " "
                                  exp_continue }


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