blogin Timeout

john heasley heas at shrubbery.net
Tue Apr 30 22:18:49 UTC 2002


Tue, Apr 30, 2002 at 10:12:34PM +0000, john heasley:
> Tue, Apr 30, 2002 at 12:42:01PM -0700, Fergus Roche:
> > I'm having problems logging into a Nortel (Accelar 1200) - blogin hangs
> > and times out. I have had the same problem with 2.2b8 and 2.2 on 2
> > different machines. I am using expect-5.32.2-65, tcl/tk-8.3.3-65 on
> > RH7.2 (2.4.9-31), but have also tried expect-5.24 on mandrake
> > (2.2.14-15)
> > I have tried various combinations of entries in .cloginrc, but always
> > with the same result. Any help would be much appreciated.
> 
> please try attached.  set for rancid-2.2.1 maint rel RSN.

actually, scratch that comment.  you probably want this version; but,
i think the problem is really the case of "Login".  the user prompt
its looking for is the regex "(Username|login|user name):".  if you
add to .cloginrc:

add userprompt bay-nr1 {Login:}

i think this will work.

i'm interested to know if the case has changed or if we've made a mistake
somewhere along the line and inadvertently changed the regex.

> > 
> > 
> > $ bin/blogin bay-nr1
> > bay-nr1
> > spawn telnet bay-nr1
> > Trying 10.10.0.1...
> > Connected to bay-nr1
> > Escape character is '^]'.
> > 
> > ********************************
> > * Bay Networks,Inc.            *
> > * Copyright (c) 1996-1999      *
> > * All Rights Reserved          *
> > * Accelar 1200                 *
> > * Software Release 2.0.5.7     *
> > ********************************
> > 
> > Login: 
> > Error: TIMEOUT reached
> > 
> > 
> > $ cat .cloginrc
> > add user bay-nr1 readwrite
> > add password bay-nr1 {password} I noted Mark Cooper's patch of 11/23/01,
> > but that appears to have been included in the 2.2 release.
> > 
> > 
> > $ cat router.db
> > bay-nr1:baynet:up
> > 
> > 
> > 
> > Thanks,
> > Fergus Roche
> > Loudeye Technologies

> #!@EXPECT_PATH@ --
> ##
> ##
> ## Copyright (C) 1997-2001 by Henry Kilmer, Erik Sherk and Pete Whiting.
> ## All rights reserved.
> ##
> ## This software may be freely copied, modified and redistributed without
> ## fee for non-commerical purposes provided that this copyright notice is
> ## preserved intact on all copies and modified copies.
> ##
> ## There is no warranty or other guarantee of fitness of this software.
> ## It is provided solely "as is". The author(s) disclaim(s) all
> ## responsibility and liability with respect to this software's usage
> ## or its effect upon hardware, computer systems, other software, or
> ## anything else.
> ##
> ##
> #
> # blogin - Bay Networks(Nortel) login
> #
> # Unlike the Cisco's, there is no enable function on the Bay's.
> # Instead there are seperate User and Manager accounts.  A 'system' command
> # exists, which i am told does nothing.
> #
> 
> # Usage line
> set usage "Usage: $argv0 \[-autoenable\] \[-noenable\] \[-c command\] \
> \[-Evar=x\] \[-e enable-password\] \[-f cloginrc-file\] \[-p user-password\] \
> \[-s script-file\] \[-t timeout\] \[-u username\] \
> \[-v vty-password\] \[-w enable-username\] \[-x command-file\] \
> \[-y ssh_cypher_type\] 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 enable 0
> # The default is that you login non-enabled (tacacs can have you login already enabled)
> set autoenable 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 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)
> } 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 {\(([^)]*)} "$reason" junk default_user
> }
> 
> # Sometimes routers take awhile to answer (the default is 10 sec)
> set timeout 45
> 
> # Process the command line
> for {set i 0} {$i < $argc} {incr i} {
>     set arg [lindex $argv $i]
> 
>     switch  -glob -- $arg {
> 	# Username
> 	-u* -
> 	-U* {
> 	    if {! [  regexp .\[uU\](.+) $arg ignore user]} {
> 		incr i
> 		set username [ lindex $argv $i ]
> 	    }
> 	# VTY Password
> 	} -p* -
> 	-P* {
> 	    if {! [  regexp .\[pP\](.+) $arg ignore userpasswd]} {
> 		incr i
> 		set userpasswd [ lindex $argv $i ]
> 	    }
> 	    set do_passwd 0
> 	# VTY Password
> 	} -v* -
> 	-v* {
> 	    if {! [  regexp .\[vV\](.+) $arg ignore passwd]} {
> 		incr i
> 		set passwd [ lindex $argv $i ]
> 	    }
> 	    set do_passwd 0
> 	# Enable Username
> 	} -w* -
> 	-W* {
> 	    if {! [  regexp .\[wW\](.+) $arg ignore enauser]} {
> 		incr i
> 		set enausername [ lindex $argv $i ]
> 	    }
>         # Environment variable to pass to -s scripts
> 	} -E*  
> 	{
> 	    if {[ regexp .\[E\](.+)=(.+) $arg ignore varname varvalue]} {
> 		set E$varname $varvalue
> 	    } else {
> 		send_user "Error: invalid format for -E in $arg\n"
> 		exit 1
> 	    } 
> 	# Enable Password
> 	} -e*
> 	{
> 	    if {! [  regexp .\[eE\](.+) $arg ignore enapasswd]} {
> 		incr i
> 		set enapasswd [ lindex $argv $i ]
> 	    }
> 	    set do_enapasswd 0
> 	# Command to run.
> 	} -c* -
> 	-C* {
> 	    if {! [  regexp .\[cC\](.+) $arg ignore command]} {
> 		incr i
> 		set command [ lindex $argv $i ]
> 	    }
> 	    set do_command 1
> 	# Expect script to run.
> 	} -s* -
> 	-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
> 	# 'ssh -c' cypher type
> 	} -y* -
> 	-Y* {
> 	    if {! [  regexp .\[eE\](.+) $arg ignore cypher]} {
> 		incr i
> 		set cypher [ lindex $argv $i ]
> 	    }
> 	# alternate cloginrc file
> 	} -f* -
> 	-F* {
> 	    if {! [ regexp .\[fF\](.+) $arg ignore password_file]} {
> 		incr i
> 		set password_file [ lindex $argv $i ]
> 	    }
> 	# Timeout
> 	} -t* -
> 	-T* {
> 	    if {! [ regexp .\[tT\](.+) $arg ignore timeout]} {
> 		incr i
> 	        set timeout [ lindex $argv $i ]
> 	    }
> 	# Command file
> 	} -x* -
> 	-X {
> 	    if {! [  regexp .\[xX\](.+) $arg ignore cmd_file]} {
> 		incr i
> 		set cmd_file [ lindex $argv $i ]
> 	    }
> 	    set cmd_fd [open $cmd_file r]
> 	    set cmd_text [read $cmd_fd]
> 	    close $cmd_fd
> 	    set command [join [split $cmd_text \n] \;]
> 	    set do_command 1
> 	# Do we enable?
> 	} -noenable {
> 	    set enable 0
> 	# Does tacacs automatically enable us?
> 	} -autoenable {
> 	    set autoenable 1
> 	    set enable 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 [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.
> proc login { router user userpswd passwd enapasswd prompt cmethod cyphertype } {
>     global spawn_id in_proc do_command do_script
>     global u_prompt p_prompt e_prompt
>     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] {
> 	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"
> 		exit 1
> 	    }
> 	} elseif ![string compare $prog "ssh"] {
> 	    if [ catch {spawn ssh -c $cyphertype -x -l $user $router} reason ] {
> 		send_user "\nError: ssh failed: $reason\n"
> 		exit 1
> 	    }
> 	} elseif ![string compare $prog "rsh"] {
> 	    if [ catch {spawn rsh -l $user $router} reason ] {
> 		send_user "\nError: rsh failed: $reason\n"
> 		exit 1
> 	    }
> 	} else {
> 	    puts "\nError: unknown connection method: $prog"
> 	    return 1
> 	}
> 	incr progs -1
> 	sleep 0.3
> 
> 	# This helps cleanup each expect clause.
> 	expect_after {
> 	    timeout {
> 		send_user "\nError: TIMEOUT reached\n"
> 		catch {close}; wait
> 		if { $in_proc} {
> 		    return 1
> 		} else {
> 		    continue
> 		}
> 	    } eof {
> 		send_user "\nError: EOF received\n"
> 		catch {close}; 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|Connection closed by)" {
> 	    catch {close}; wait
> 	    if !$progs {
> 		send_user "\nError: Connection Refused ($prog)\n"; return 1
> 	    }
> 	} eof { send_user "\nError: Couldn't login\n"; wait; return 1
> 	} -nocase "unknown host\r" {
> 	    catch {close};
> 	    send_user "\nError: Unknown host\n"; wait; return 1
> 	} "Host is unreachable" {
> 	    catch {close};
> 	    send_user "\nError: Host Unreachable!\n"; wait; return 1
> 	} "No address associated with name" {
> 	    catch {close};
> 	    send_user "\nError: Unknown host\n"; 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"
> 	    return 1 }
> 	-re "Offending key for .* \(yes\/no\)\?"   {
> 	    send "no\r"
> 	    send_user "\nError: host key mismatch for $router.  Update the SSH known_hosts file accordingly.\n"
> 	    return 1 }
> 	-re "$u_prompt"	{ send "$user\r"
> 	    expect {
> 		eof			{ send_user "\nError: Couldn't login\n"; wait; return 1 }
> 		"Login invalid"		{ send_user "\nError: Invalid login\n"; vatch {close}; wait; return 1 }
> 		-re "$p_prompt"		{ send "$userpswd\r" }
> 		"$prompt"		{ set in_proc 0; return 0 }
> 	    }
> 	    exp_continue
> 	}
> 	-re "$p_prompt"	{
> 	    if ![string compare $prog "ssh"] {
> 		send "$userpswd\r"
> 	    } else {
> 		send "$passwd\r"
> 	    }
> 	    expect {
> 		eof		{ send_user "\nError: Couldn't login\n"; wait; return 1 }
> 		-re "$e_prompt"	{ send "$enapasswd\r" }
> 		"$prompt"	{ set in_proc 0; return 0 }
> 	    }
> 	    exp_continue
> 	}
> 	"$prompt"	{ break; }
> 	denied		{ send_user "\nError: Check your passwd for $router\n"
> 			  catch {close}; wait; return 1
> 			}
> 	"% Bad passwords" {send_user "\nError: Check your passwd for $router\n"; return 1 }
>     }
> }
>     set in_proc 0
>     return 0
> }
> 
> # Enable
> proc do_enable { enauser enapasswd } {
>     global prompt in_proc
>     global u_prompt e_prompt
>     set in_proc 1
> 
>     send "enable\r"
>     expect {
> 	-re "$u_prompt"	{ send "$enauser\r"; exp_continue}
> 	-re "$e_prompt"	{ send "$enapasswd\r"; exp_continue}
> 	"#"		{ set prompt "#" }
> 	"(enable)"	{ set prompt "> (enable) " }
> 	denied		{ 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 in_proc
>     set in_proc 1
> 
>     send "more off\r"
> 
>     expect $prompt {}
> 
>     regsub -all "\[)(]" $prompt {\\&} reprompt
> 
>     # Is this a multi-command?
>     if [ string match "*\;*" "$command" ] {
> 	set commands [split $command \;]
> 	set num_commands [llength $commands]
> 
> 	for {set i 0} {$i < $num_commands} { incr i} {
> 	    send "[subst -nocommands [lindex $commands $i]]\r"
> 	    expect {
> 		-re "^\[^\n\r *]*$reprompt"	{}
> 		-re "^\[^\n\r]*$reprompt."	{ exp_continue }
> 		-re "\[\n\r]"			{ exp_continue }
> 	    }
> 	}
>     } else {
> 	send "[subst -nocommands $command]\r"
> 	expect {
> 		-re "^\[^\n\r *]*$reprompt"	{}
> 		-re "^\[^\n\r]*$reprompt."	{ exp_continue }
> 		-re "\[\n\r]"			{ exp_continue }
> 	}
>     }
>     send "logout\r"
>     expect {
> 	"\n" { exp_continue }
> 	timeout { 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
> foreach router [lrange $argv $i end] {
>     set router [string tolower $router]
>     send_user "$router\n"
> 
>     # Figure out prompt.
>     # Since autoenable is off by default, if we have it defined, it
>     # was done on the command line. If it is not specifically set on the
>     # command line, check the password file.
>     if $autoenable {
> 	set prompt "#"
>     } else {
> 	set ae [find autoenable $router]
> 	if { "$ae" == "1" } {
> 	    set autoenable 1
> 	    set enable 0
> 	    set prompt "#"
> 	} else {
> 	    set autoenable 0
> 	    set prompt ">"
> 	}
>     }
> 
>     # look for noenable option in .cloginrc
>     if { [find noenable $router] != "" } {
> 	set enable 0
>     }
> 
>     # Figure out passwords
>     if { $do_passwd || $do_enapasswd } {
>       set pswd [find password $router]
>       if { [llength $pswd] == 0 } {
> 	send_user "Error - no password for $router in $password_file.\n"
> 	continue
>       }
>       if { $do_enapasswd && $autoenable == 0 && [llength $pswd] < 2 } {
> 	send_user "Error - no enable password for $router in $password_file.\n"
> 	continue
>       }
>       set passwd [lindex $pswd 0]
>       set enapasswd [lindex $pswd 1]
>     }
> 
>     # Figure out username
>     if {[info exists username]} {
>       # command line username
>       set ruser $username
>     } else {
>       set ruser [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 [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 [find enauser $router]
>       if { "$enauser" == "" } { set enauser $ruser }
>     }
> 
>     # Figure out prompts
>     set u_prompt [find userprompt $router]
>     if { "$u_prompt" == "" } { set u_prompt "(Username|login|user name):" }
>     set p_prompt [find passprompt $router]
>     if { "$p_prompt" == "" } { set p_prompt "(\[Pp]assword|passwd):" }
>     set e_prompt [find enableprompt $router]
>     if { "$e_prompt" == "" } { set e_prompt "\[Pp]assword:" }
> 
>     # 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}} }
> 
>     # Login to the router
>     if {[login $router $ruser $userpswd $passwd $enapasswd $prompt $cmethod $cyphertype]} {
> 	continue
>     }
>     if { $enable } {
> 	if {[do_enable $enauser $enapasswd]} {
> 	    if { $do_command || $do_script } {
> 		close; wait
> 		continue
> 	    }
> 	}
>     }
> 
>     if { $do_command } {
> 	if {[run_commands $prompt $command]} {
> 	    continue
> 	}
>     } elseif { $do_script } {
> 	send "more off\r"
> 	expect $prompt	{}
> 	source $sfile
> 	close
>     } else {
> 	label $router
> 	log_user 1
> 	interact
>     }
> 
>     # End of for each router
>     wait
>     sleep 0.3
> }
> exit 0




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