[rancid] Quagga vtysh patchs
Nicolas DEFFAYET
nicolas-ml at deffayet.com
Sat Jun 7 12:47:41 UTC 2014
Hello,
Please find the complete files attached that I use successfully with
Rancid 2.3.8 to get config from Quagga vtysh. I have done a big rewrite
for have clean stuff and I use a new qlogin instead of original clogin
because the original clogin don't work correctly since Rancid 2.3.5 due
to various change.
# vi /usr/lib/rancid/bin/rancid-fe
---
- 'zebra' => 'zrancid'
+ 'zebra' => 'zrancid',
+ 'quagga' => 'qrancid'
---
Put qlogin qrancid
# chown root:root qlogin qrancid
# chmod 755 qlogin qrancid
# mv qlogin qrancid /usr/lib/rancid/bin/
In router.db file
---
test.example.com:quagga:up
---
--
Nicolas DEFFAYET
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#! /usr/bin/expect --
##
## $Id: qlogin.in 1 2012-06-01 17:05:00Z n $
##
## rancid 2.3.8
## Copyright (c) 1997-2011 by Terrapin Communications, Inc.
## All rights reserved.
##
## This code is derived from software contributed to and maintained by
## Terrapin Communications, Inc. by Henry Kilmer, John Heasley, Andrew Partan,
## Pete Whiting, Austin Schutz, and Andrew Fort.
##
## Redistribution and use in source and binary forms, with or without
## modification, are permitted provided that the following conditions
## are met:
## 1. Redistributions of source code must retain the above copyright
## notice, this list of conditions and the following disclaimer.
## 2. Redistributions in binary form must reproduce the above copyright
## notice, this list of conditions and the following disclaimer in the
## documentation and/or other materials provided with the distribution.
## 3. All advertising materials mentioning features or use of this software
## must display the following acknowledgement:
## This product includes software developed by Terrapin Communications,
## Inc. and its contributors for RANCID.
## 4. Neither the name of Terrapin Communications, Inc. nor the names of its
## contributors may be used to endorse or promote products derived from
## this software without specific prior written permission.
## 5. It is requested that non-binding fixes and modifications be contributed
## back to Terrapin Communications, Inc.
##
## THIS SOFTWARE IS PROVIDED BY Terrapin Communications, INC. AND CONTRIBUTORS
## ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
## TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
## PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COMPANY OR CONTRIBUTORS
## BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
## CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
## SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
## INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
## CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
## ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
## POSSIBILITY OF SUCH DAMAGE.
#
# The expect login scripts were based on Erik Sherk's gwtn, by permission.
#
# qlogin - quagga s/w login
# Based on csblogin
#
# The default username password is the same as the vty password.
#
# Usage line
set usage "Usage: $argv0 \[-dV\] \[-c command\] \[-Evar=x\] \
\[-f cloginrc-file\] \[-p user-password\] \[-r passphrase\] \[-s script-file\] \
\[-u username\] \[-t timeout\] \[-x command-file\] \[-y ssh_cypher_type\] \
router \[router...\]\n"
# env(CLOGIN) may contain:
# x == do not set xterm banner or name
# Password file
set password_file $env(HOME)/.cloginrc
# Default is to login to the router
set do_command 0
set do_script 0
# The default is to look in the password file to find the passwords. This
# tracks if we receive them on the command line.
set do_passwd 1
# Sometimes routers take awhile to answer (the default is 10 sec)
set timeoutdflt 120
#
# new option to provide "login" command capabilities
set loginonly 0
# Find the user in the ENV, or use the unix userid.
if {[info exists env(CISCO_USER)]} {
set default_user $env(CISCO_USER)
} elseif {[info exists env(USER)]} {
set default_user $env(USER)
} elseif {[info exists env(LOGNAME)]} {
set default_user $env(LOGNAME)
} else {
# This uses "id" which I think is portable. At least it has existed
# (without options) on all machines/OSes I've been on recently -
# unlike whoami or id -nu.
if [catch {exec id} reason] {
send_error "\nError: could not exec id: $reason\n"
exit 1
}
regexp {\(([^)]*)} "$reason" junk default_user
}
if {[info exists env(CLOGINRC)]} {
set password_file $env(CLOGINRC)
}
# Process the command line
for {set i 0} {$i < $argc} {incr i} {
set arg [lindex $argv $i]
switch -glob -- $arg {
# Command to run.
-c* -
-C* {
if {! [regexp .\[cC\](.+) $arg ignore command]} {
incr i
set command [lindex $argv $i]
}
set do_command 1
# Expect debug mode
} -d* {
exp_internal 1
# Environment variable to pass to -s scripts
} -E*
{
if {[regexp .\[E\](.+)=(.+) $arg ignore varname varvalue]} {
set E$varname $varvalue
} else {
send_user "\nError: invalid format for -E in $arg\n"
exit 1
}
# alternate cloginrc file
} -f* -
-F* {
if {! [regexp .\[fF\](.+) $arg ignore password_file]} {
incr i
set password_file [lindex $argv $i]
}
# user Password
} -p* {
if {! [regexp .\[pP\](.+) $arg ignore userpasswd]} {
incr i
set userpasswd [lindex $argv $i]
}
set do_passwd 0
# ssh passphrase
} -r* {
if {! [regexp .\[rR\](.+) $arg ignore passphrase]} {
incr i
set vapassphrase [lindex $argv $i]
}
# Version string
} -V* {
send_user "rancid 2.3.8\n"
exit 0
# Passphrase
} -r* -
-R* {
if {! [regexp .\[rR\](.+) $arg ignore passphrase]} {
incr i
set avpassphrase [lindex $argv $i]
}
# Expect script to run.
} -s* {
if {! [regexp .\[sS\](.+) $arg ignore sfile]} {
incr i
set sfile [lindex $argv $i]
}
if { ! [file readable $sfile] } {
send_user "\nError: Can't read $sfile\n"
exit 1
}
set do_script 1
# Timeout
} -t* {
if {! [regexp .\[tT\](.+) $arg ignore timeout]} {
incr i
set timeoutdflt [lindex $argv $i]
}
# Username
} -u* -
-U* {
if {! [regexp .\[uU\](.+) $arg ignore user]} {
incr i
set username [lindex $argv $i]
}
# Command file
} -x* {
if {! [regexp .\[xX\](.+) $arg ignore cmd_file]} {
incr i
set cmd_file [lindex $argv $i]
}
if [ catch {set cmd_fd [open $cmd_file r]} reason ] {
send_user "\nError: $reason\n"
exit 1
}
set cmd_text [read $cmd_fd]
close $cmd_fd
set command [join [split $cmd_text \n] \;]
set do_command 1
# 'ssh -c' cypher type
} -y* -
-Y* {
if {! [regexp .\[yY\](.+) $arg ignore cypher]} {
incr i
set cypher [lindex $argv $i]
}
} -* {
send_user "\nError: Unknown argument! $arg\n"
send_user $usage
exit 1
} default {
break
}
}
}
# Process routers...no routers listed is an error.
if { $i == $argc } {
send_user "\nError: $usage"
}
# Only be quiet if we are running a script (it can log its output
# on its own)
if { $do_script } {
log_user 0
} else {
log_user 1
}
#
# Done configuration/variable setting. Now run with it...
#
# Sets Xterm title if interactive...if its an xterm and the user cares
proc label { host } {
global env
# if CLOGIN has an 'x' in it, don't set the xterm name/banner
if [info exists env(CLOGIN)] {
if {[string first "x" $env(CLOGIN)] != -1} { return }
}
# take host from ENV(TERM)
if [info exists env(TERM)] {
if [regexp \^(xterm|vs) $env(TERM) ignore] {
send_user "\033]1;[lindex [split $host "."] 0]\a"
send_user "\033]2;$host\a"
}
}
}
# This is a helper function to make the password file easier to
# maintain. Using this the password file has the form:
# add password sl* pete cow
# add password at* steve
# add password * hanky-pie
proc add {var args} { global int_$var ; lappend int_$var $args}
proc include {args} {
global env
regsub -all "(^{|}$)" $args {} args
if { [regexp "^/" $args ignore ] == 0 } {
set args $env(HOME)/$args
}
source_password_file $args
}
proc find {var router} {
upvar int_$var list
if { [info exists list] } {
foreach line $list {
if { [string match [lindex $line 0] $router] } {
return [lrange $line 1 end]
}
}
}
return {}
}
# Loads the password file. Note that as this file is tcl, and that
# it is sourced, the user better know what to put in there, as it
# could install more than just password info... I will assume however,
# that a "bad guy" could just as easy put such code in the clogin
# script, so I will leave .cloginrc as just an extention of that script
proc source_password_file { password_file } {
global env
if { ! [file exists $password_file] } {
send_user "\nError: password file ($password_file) does not exist\n"
exit 1
}
file stat $password_file fileinfo
if { [expr ($fileinfo(mode) & 007)] != 0000 } {
send_user "\nError: $password_file must not be world readable/writable\n"
exit 1
}
if [catch {source $password_file} reason ] {
send_user "\nError: $reason\n"
exit 1
}
}
# Log into the router.
# returns: 0 on success, 1 on failure, -1 if rsh was used successfully
proc login { router user passwd cmethod cyphertype identfile } {
global spawn_id in_proc do_command do_script passphrase
global prompt sshcmd
set in_proc 1
# try each of the connection methods in $cmethod until one is successful
set progs [llength $cmethod]
foreach prog [lrange $cmethod 0 end] {
incr progs -1
if [string match "telnet*" $prog] {
regexp {telnet(:([^[:space:]]+))*} $prog command suffix port
if {"$port" == ""} {
set retval [catch {spawn telnet $router} reason]
} else {
set retval [catch {spawn telnet $router $port} reason]
}
if { $retval } {
send_user "\nError: telnet failed: $reason\n"
return 1
}
} elseif ![string compare $prog "ssh"] {
# ssh to the router & try to login with or without an identfile.
# We use two calls to spawn since spawn does not seem to parse
# spaces correctly.
if {$identfile != ""} {
if [catch {spawn $sshcmd -c $cyphertype -x -l $user -i $identfile $router} reason] {
send_user "\nError: failed to $sshcmd: $reason\n"
return 1
}
} else {
if [catch {spawn $sshcmd -c $cyphertype -x -l $user $router} reason] {
send_user "\nError: failed to $sshcmd: $reason\n"
return 1
}
}
} elseif ![string compare $prog "rsh"] {
send_error "\nError: unsupported method: rsh\n"
if { $progs == 0 } {
return 1
}
continue
} else {
send_user "\nError: unknown connection method: $prog\n"
return 1
}
sleep 0.3
# This helps cleanup each expect clause.
expect_after {
timeout {
send_user "\nError: TIMEOUT reached\n"
catch {close}; catch {wait};
if { $in_proc} {
return 1
} else {
continue
}
} eof {
send_user "\nError: EOF received\n"
catch {close}; catch {wait};
if { $in_proc} {
return 1
} else {
continue
}
}
}
# Here we get a little tricky. There are several possibilities:
# the router can ask for a username and passwd and then
# talk to the TACACS server to authenticate you, or if the
# TACACS server is not working, then it will use the enable
# passwd. Or, the router might not have TACACS turned on,
# then it will just send the passwd.
# if telnet fails with connection refused, try ssh
expect {
-re "(Connection refused|Secure connection \[^\n\r]+ refused)" {
catch {close}; catch {wait};
if !$progs {
send_user "\nError: Connection Refused ($prog): $router\n"
return 1
}
}
-re "(Connection closed by|Connection to \[^\n\r]+ closed)" {
catch {close}; catch {wait};
if !$progs {
send_user "\nError: Connection closed ($prog): $router\n"
return 1
}
}
eof { send_user "\nError: Couldn't login: $router\n"; wait; return 1 }
-nocase "unknown host\r" {
send_user "\nError: Unknown host $router\n";
catch {close}; catch {wait};
return 1
}
"Host is unreachable" {
send_user "\nError: Host Unreachable: $router\n";
catch {close}; catch {wait};
return 1
}
"No address associated with name" {
send_user "\nError: Unknown host $router\n";
catch {close}; catch {wait};
return 1
}
-re "(Host key not found |The authenticity of host .* be established).* \\(yes/no\\)\\?" {
send "yes\r"
send_user "\nHost $router added to the list of known hosts.\n"
exp_continue
}
-re "HOST IDENTIFICATION HAS CHANGED.* \\(yes/no\\)\\?" {
send "no\r"
send_user "\nError: The host key for $router has changed. Update the SSH known_hosts file accordingly.\n"
catch {close}; catch {wait};
return 1
}
-re "HOST IDENTIFICATION HAS CHANGED\[^\n\r]+" {
send_user "\nError: The host key for $router has changed. Update the SSH known_hosts file accordingly.\n"
return 1
}
-re "Offending key for .* \\(yes/no\\)\\?" {
send "no\r"
send_user "\nError: host key mismatch for $router. Update the SSH known_hosts file accordingly.\n"
catch {close}; catch {wait};
return 1
}
-re "(denied|Sorry)" {
send_user "\nError: Check your passwd for $router\n"
catch {close}; catch {wait}; return 1
}
-re "(Password|Password for .+):" {
# ssh pwd prompt
sleep 1
send -- "$passwd\r"
exp_continue
}
-re "Enter passphrase.*: " {
# sleep briefly to allow time for stty -echo
sleep .3
send -- "$passphrase\r"
exp_continue
}
-re "$prompt" {
set prompt_match $expect_out(0,string);
break;
}
}
}
set in_proc 0
return 0
}
# Run commands given on the command line.
proc run_commands { prompt command } {
global in_proc
set in_proc 1
set reprompt $prompt
set commands [split $command \;]
set num_commands [llength $commands]
# the pager can not be turned off on the PIX, so we have to look
# for the "More" prompt. the extreme is equally obnoxious in pre-12.3 XOS,
# with a global switch in the config.
for {set i 0} {$i < $num_commands} { incr i} {
send -- "[subst -nocommands [lindex $commands $i]]\r"
expect {
-re "^\[^\n\r *]*$prompt *$" {}
-re "^\[^\n\r]*$prompt." { exp_continue }
-re "(\r\n|\n)" { exp_continue }
}
}
send "exit\r"
expect {
-re "\[\n\r]+" { exp_continue }
timeout { catch {close}; catch {wait};
return 0
}
eof { return 0 }
}
set in_proc 0
}
#
# For each router... (this is main loop)
#
source_password_file $password_file
set in_proc 0
set exitval 0
foreach router [lrange $argv $i end] {
set router [string tolower $router]
send_user "$router\n"
# device timeout
set timeout [find timeout $router]
if { [llength $timeout] == 0 } {
set timeout $timeoutdflt
}
# Default prompt.
set prompt "#"
# Figure out username
if {[info exists username]} {
# command line username
set loginname $username
} else {
set loginname [join [find user $router] ""]
if { "$loginname" == "" } { set loginname $default_user }
}
# Figure out loginname's password (if different from the vty password)
if {[info exists userpasswd]} {
# command line passwd
set passwd $userpasswd
} else {
set passwd [join [lindex [find userpassword $router] 0] ""]
if { "$passwd" == "" } {
set passwd [join [lindex [find password $router] 0] ""]
if { "$passwd" == "" } {
send_user "\nError: no password for $router in $password_file.\n"
continue
}
}
}
# Figure out identity file to use
set identfile [join [lindex [find identity $router] 0] ""]
# Figure out passphrase to use
if {[info exists avpassphrase]} {
set passphrase $avpassphrase
} else {
set passphrase [join [lindex [find passphrase $router] 0] ""]
}
if { ! [string length "$passphrase"]} {
set passphrase $passwd
}
# Figure out cypher type
if {[info exists cypher]} {
# command line cypher type
set cyphertype $cypher
} else {
set cyphertype [find cyphertype $router]
if { "$cyphertype" == "" } { set cyphertype "3des" }
}
# Figure out connection method
set cmethod [find method $router]
if { "$cmethod" == "" } { set cmethod {{telnet} {ssh}} }
# Figure out the SSH executable name
set sshcmd [join [lindex [find sshcmd $router] 0] ""]
if { "$sshcmd" == "" } { set sshcmd {ssh} }
# Login to the router
if {[login $router $loginname $passwd $cmethod $cyphertype $identfile]} {
incr exitval
continue
}
if { $do_command || $do_script } {
send "terminal length 0\r"
expect -re $prompt {}
}
if { $do_command } {
if {[run_commands $prompt $command]} {
incr exitval
continue
}
} elseif { $do_script } {
source $sfile
catch {close};
} else {
label $router
log_user 1
interact
}
# End of for each router
catch {wait};
sleep 0.3
}
exit $exitval
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