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vdxlogin
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vdxlogin
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#! /usr/bin/expect --
##
## rancid 3.2
## Copyright (c) 1997-2015 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.
#
# vdxlogin - RANCID login for Brocade VDX/NOS appliances
#
# Slight modifications from RANCID 3.2's clogin - github.com/anthonypants
# Usage line
set usage "Usage: $argv0 \[-dSV\] \[-autoenable\] \[-noenable\] \[-c command\] \
\[-Evar=x\] \[-e enable-password\] \[-f cloginrc-file\] \[-p user-password\] \
\[-r passphrase\] \[-s script-file\] \[-t timeout\] \[-u username\] \
\[-v vty-password\] \[-w enable-username\] \[-x command-file\] \
\[-y ssh_cypher_type\] 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 automatically enable
set avenable 1
# The default is that you login non-enabled (tacacs can have you login already
# enabled)
set avautoenable 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
set do_enapasswd 1
# Save config, if prompted
set do_saveconfig 0
# Sometimes routers take awhile to answer (the default is 10 sec)
set timeoutdflt 45
# Some CLIs having problems if we write too fast (Extreme, PIX, Cat)
set send_human {.2 .1 .4 .2 1}
# 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 {
-d* {
# Expect debug mode
exp_internal 1
}
-u* {
# Username
if {! [regexp .\[uU\](.+) $arg ignore user]} {
incr i
set username [lindex $argv $i]
}
}
-p* {
# VTY Password
if {! [regexp .\[pP\](.+) $arg ignore userpasswd]} {
incr i
set userpasswd [lindex $argv $i]
}
set do_passwd 0
}
-r* {
# ssh passphrase
if {! [regexp .\[rR\](.+) $arg ignore passphrase]} {
incr i
set avpassphrase [lindex $argv $i]
}
}
-v* {
# VTY Password
if {! [regexp .\[vV\](.+) $arg ignore passwd]} {
incr i
set passwd [lindex $argv $i]
}
set do_passwd 0
}
-V* {
# Version string
send_user "rancid 3.2\n"
exit 0
}
-w* {
# Enable Username
if {! [regexp .\[wW\](.+) $arg ignore enauser]} {
incr i
set enausername [lindex $argv $i]
}
}
-E* {
# Environment variable to pass to -s scripts
if {[regexp .\[E\](.+)=(.+) $arg ignore varname varvalue]} {
set E$varname $varvalue
} else {
send_user "\nError: invalid format for -E in $arg\n"
exit 1
}
}
-e* {
# Enable Password
if {! [regexp .\[e\](.+) $arg ignore enapasswd]} {
incr i
set enapasswd [lindex $argv $i]
}
set do_enapasswd 0
}
-c* {
# Command to run.
if {! [regexp .\[cC\](.+) $arg ignore command]} {
incr i
set command [lindex $argv $i]
}
set do_command 1
}
-s* {
# Expect script to run.
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
}
-S* {
# save config on exit
set do_saveconfig 1
}
-y* {
# 'ssh -c' cipher type
if {! [regexp .\[eE\](.+) $arg ignore cypher]} {
incr i
set cypher [lindex $argv $i]
}
}
-f* {
# alternate cloginrc file
if {! [regexp .\[fF\](.+) $arg ignore password_file]} {
incr i
set password_file [lindex $argv $i]
}
}
-t* {
# Timeout
if {! [regexp .\[tT\](.+) $arg ignore timeout]} {
incr i
set timeoutdflt [lindex $argv $i]
}
}
-x* {
# Command file
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
}
-noenable {
# Do we enable?
set avenable 0
}
-autoenable {
# Does tacacs automatically enable us?
set avautoenable 1
set avenable 0
}
-* {
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 -nocase [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
proc login { router user userpswd passwd enapasswd cmethod cyphertype identfile } {
global command spawn_id in_proc do_command do_script platform passphrase
global prompt prompt_match u_prompt p_prompt e_prompt sshcmd
set in_proc 1
set uprompt_seen 0
# 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 "ssh*" $prog] {
# ssh to the router & try to login with or without an identfile.
regexp {ssh(:([^[:space:]]+))*} $prog methcmd suffix port
set cmd $sshcmd
if {"$port" != ""} {
set cmd "$cmd -p $port"
}
if {"$identfile" != ""} {
set cmd "$cmd -i $identfile"
}
set retval [catch {eval spawn [split "$cmd -c $cyphertype -x -l $user $router" { }]} reason]
if { $retval } {
send_user "\nError: $cmd failed: $reason\n"
return 1
}
} elseif [string match "telnet*" $prog] {
# don't use telnet what is wrong with you
regexp {telnet(:([^[:space:]]+))*} $prog methcmd suffix port
send_user "\nError: $prog is not a valid connection method\n"
return 1
} 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 password for $router\n"
catch {close}; catch {wait}; return 1
}
"Login failed" {
send_user "\nError: Check your password for $router\n"
catch {close}; catch {wait}; return 1
}
-re "% (Bad passwords|Authentication failed)" {
send_user "\nError: Check your password for $router\n"
catch {close}; catch {wait}; return 1
}
"Press any key to continue" {
# send_user "Pressing the ANY key\n"
send "\r"
exp_continue
}
-re "Last login:" {
exp_continue
}
-re "Press the <tab> key \[^\r\n]+\[\r\n]+" {
exp_continue
}
-re "@\[^\r\n]+ $p_prompt" {
# ssh pwd prompt
sleep 1
send -- "$userpswd\r"
exp_continue
}
-re "Enter passphrase.*: " {
# sleep briefly to allow time for stty -echo
sleep .3
send -- "$passphrase\r"
exp_continue
}
-re "$u_prompt" {
send -- "$user\r"
set uprompt_seen 1
exp_continue
}
-re "$p_prompt" {
sleep 1
if {$uprompt_seen == 1} {
send -- "$userpswd\r"
} else {
send -- "$passwd\r"
}
exp_continue
}
-re "$prompt" {
set prompt_match $expect_out(0,string);
break;
}
"Login invalid" {
send_user "\nError: Invalid login: $router\n";
catch {close}; catch {wait}; return 1
}
-re "\[^\r\n]*\[\r\n]+" { exp_continue; }
}
}
set in_proc 0
return 0
}
# Enable
proc do_enable { enauser enapasswd } {
global do_saveconfig in_proc
global prompt u_prompt e_prompt enacmd
set in_proc 1
send "$enacmd\r"
expect {
-re "$u_prompt" { send -- "$enauser\r"; exp_continue}
-re "$e_prompt" { send -- "$enapasswd\r"; exp_continue}
"#" { set prompt "#" }
"(enable)" { set prompt "> \\(enable\\) " }
"% Invalid input" {
send_user "\nError: Unrecognized command, check your enable command\n";
return 1
}
-re "(denied|Sorry|Incorrect)" {
# % Access denied - from local auth and poss. others
send_user "\nError: Check your Enable passwd\n";
return 1
}
"% Error in authentication" {
send_user "\nError: Check your Enable passwd\n"
return 1
}
"% Bad passwords" {
send_user "\nError: Check your Enable passwd\n"
return 1
}
}
# We set the prompt variable (above) so script files don't need
# to know what it is.
set in_proc 0
return 0
}
# Run commands given on the command line.
proc run_commands { prompt command } {
global do_saveconfig in_proc platform
set in_proc 1
set reprompt $prompt
# this is the only way i see to get rid of more prompts in o/p..grrrrr
log_user 0
# handle escaped ;s in commands, and ;; and ^;
regsub -all {([^\\]);;} $command "\\1;\u002;" esccommand
regsub {^;} $esccommand "\u002;" command
set sep "\\1\u001"
regsub -all {([^\\]);} $command "$sep" esccommand
set sep "\u001"
set commands [split $esccommand $sep]
set num_commands [llength $commands]
for {set i 0} {$i < $num_commands} { incr i} {
if { [lindex $commands $i] == "\u002" } {
send -- "\r"
} else {
send -- "[subst -nocommands [lindex $commands $i]]\r"
}
expect {
-re "\b+" { exp_continue }
-re "^\[^\n\r *]*$reprompt" {
send_user -- "$expect_out(buffer)"
}
-re "^\[^\n\r]*$reprompt." {
send_user -- "$expect_out(buffer)"
exp_continue
}
-re "\[^\r\n]*\[\n\r]+" {
send_user -- "$expect_out(buffer)"
exp_continue
}
}
}
log_user 1
send -h "quit\r"
expect {
-re "\[\n\r]+" { exp_continue }
timeout {
catch {close};
catch {wait};
return 0
}
eof {
# Unfortunately, this won't pass found_end to Perl
set found_end 1
# Nothing is validating this exit code
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
set prompt_match ""
foreach router [lrange $argv $i end] {
set router [string tolower $router]
# attempt at platform switching.
set platform ""
send_user -- "$router\n"
# device timeout
set timeout [find timeout $router]
if { [llength $timeout] == 0 } {
set timeout $timeoutdflt
}
# Default prompt.
set prompt [join [find prompt $router] ""]
if { [llength $prompt] == 0 } {
set prompt "(>|#| \\(enable\\))"
}
# look for autoenable option in .cloginrc & cmd-line
set ae [find autoenable $router]
if { "$ae" == "1" || $avautoenable } {
set autoenable 1
} else {
set autoenable 0
}
# look for enable options in .cloginrc & cmd-line
if { $avenable == 0 } {
set enable 0
} else {
set ne [find noenable $router]
if { "$ne" == "1" || "$autoenable" == "1" } {
set enable 0
} else {
set enable 1
}
}
# Figure out passwords
if { $do_passwd || $do_enapasswd } {
set pswd [find password $router]
if { [llength $pswd] == 0 } {
send_user -- "\nError: no password for $router in $password_file.\n"
continue
}
if { $enable && $do_enapasswd && $autoenable == 0 && [llength $pswd] < 2 } {
send_user -- "\nError: no enable password for $router in $password_file.\n"
continue
}
set passwd [join [lindex $pswd 0] ""]
set enapasswd [join [lindex $pswd 1] ""]
} else {
set passwd $userpasswd
set enapasswd $enapasswd
}
# Figure out username
if {[info exists username]} {
# command line username
set ruser $username
} else {
set ruser [join [find user $router] ""]
if { "$ruser" == "" } { set ruser $default_user }
}
# Figure out username's password (if different from the vty password)
if {[info exists userpasswd]} {
# command line username
set userpswd $userpasswd
} else {
set userpswd [join [find userpassword $router] ""]
if { "$userpswd" == "" } { set userpswd $passwd }
}
# Figure out enable username
if {[info exists enausername]} {
# command line enausername
set enauser $enausername
} else {
set enauser [join [find enauser $router] ""]
if { "$enauser" == "" } { set enauser $ruser }
}
# Figure out enable command
set enacmd [join [find enablecmd $router] ""]
if { "$enacmd" == "" } { set enacmd "enable" }
# Figure out prompts
set u_prompt [find userprompt $router]
if { "$u_prompt" == "" } {
set u_prompt "(\[Uu]sername|Login|login|user name|User):"
} else {
set u_prompt [join [lindex $u_prompt 0] ""]
}
set p_prompt [find passprompt $router]
if { "$p_prompt" == "" } {
set p_prompt "(\[Pp]assword|passwd|Enter password for \[^ :]+):"
} else {
set p_prompt [join [lindex $p_prompt 0] ""]
}
set e_prompt [find enableprompt $router]
if { "$e_prompt" == "" } {
set e_prompt "\[Pp]assword:"
} else {
set e_prompt [join [lindex $e_prompt 0] ""]
}
# 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 cipher type
# aside: I really hate that this word is misspelled everywhere
if {[info exists cypher]} {
# command line cipher type
set cyphertype $cypher
} else {
set cyphertype [find cyphertype $router]
if { "$cyphertype" == "" } {
# don't default to 3des what is wrong with you
send_user "\nError: No cipher selected. Please enter a ciphertype.\n";
return 1
}
}
# 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 $ruser $userpswd $passwd $enapasswd $cmethod $cyphertype $identfile]} {
incr exitval
# if login failed, move on to the next device
continue
}
# Figure out the prompt.
if { [regexp -- "(#| \\(enable\\))" $prompt_match junk] == 1 } {
set enable 0
}
if { $enable } {
if {[do_enable $enauser $enapasswd]} {
if { $do_command || $do_script } {
incr exitval
catch {close}; catch {wait};
continue
}
}
}
# we are logged in, now figure out the full prompt
send "\r"
regsub -all {^(\^*)(.*)} $prompt {\2} reprompt
expect {
-re "\[\r\n]+" { exp_continue; }
-re "^.+$reprompt" {
set junk $expect_out(0,string);
regsub -all "\[\]\[\(\)+]" $junk {\\&} prompt;
}
}
if { $do_command || $do_script } {
# Disable pagination
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