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Diffstat (limited to 'password/helpers/passwd-expect')
| -rw-r--r-- | password/helpers/passwd-expect | 267 |
1 files changed, 267 insertions, 0 deletions
diff --git a/password/helpers/passwd-expect b/password/helpers/passwd-expect new file mode 100644 index 0000000..7db21ad --- /dev/null +++ b/password/helpers/passwd-expect @@ -0,0 +1,267 @@ +# +# This scripts changes a password on the local system or a remote host. +# Connections to the remote (this can also be localhost) are made by ssh, rsh, +# telnet or rlogin. + +# @author Gaudenz Steinlin <gaudenz@soziologie.ch> + +# For sudo support alter sudoers (using visudo) so that it contains the +# following information (replace 'apache' if your webserver runs under another +# user): +# ----- +# # Needed for Horde's passwd module +# Runas_Alias REGULARUSERS = ALL, !root +# apache ALL=(REGULARUSERS) NOPASSWD:/usr/bin/passwd +# ----- + +# @stdin The username, oldpassword, newpassword (in this order) +# will be taken from stdin +# @param -prompt regexp for the shell prompt +# @param -password regexp password prompt +# @param -oldpassword regexp for the old password +# @param -newpassword regexp for the new password +# @param -verify regexp for verifying the password +# @param -success regexp for success changing the password +# @param -login regexp for the telnet prompt for the loginname +# @param -host hostname to be connected +# @param -timeout timeout for each step +# @param -log file for writing error messages +# @param -output file for loging the output +# @param -telnet use telnet +# @param -ssh use ssh (default) +# @param -rlogin use rlogin +# @param -slogin use slogin +# @param -sudo use sudo +# @param -program command for changing passwords +# +# @return 0 on success, 1 on failure +# + + +# default values +set host "localhost" +set login "ssh" +set program "passwd" +set prompt_string "(%|\\\$|>)" +set fingerprint_string "The authenticity of host.* can't be established.*\nRSA key fingerprint is.*\nAre you sure you want to continue connecting.*" +set password_string "(P|p)assword.*" +set oldpassword_string "((O|o)ld|login|\\\(current\\\) UNIX) (P|p)assword.*" +set newpassword_string "(N|n)ew.* (P|p)assword.*" +set badoldpassword_string "(Authentication token manipulation error).*" +set badpassword_string "((passwd|BAD PASSWORD).*|(passwd|Bad:).*\r)" +set verify_string "((R|r)e-*enter.*(P|p)assword|Retype new( UNIX)? password|(V|v)erification|(V|v)erify|(A|a)gain).*" +set success_string "((P|p)assword.* changed|successfully)" +set login_string "(((L|l)ogin|(U|u)sername).*)" +set timeout 20 +set log "/tmp/passwd.out" +set output false +set output_file "/tmp/passwd.log" + +# read input from stdin +fconfigure stdin -blocking 1 + +gets stdin user +gets stdin password(old) +gets stdin password(new) + +# alternative: read input from command line +#if {$argc < 3} { +# send_user "Too few arguments: Usage $argv0 username oldpass newpass" +# exit 1 +#} +#set user [lindex $argv 0] +#set password(old) [lindex $argv 1] +#set password(new) [lindex $argv 2] + +# no output to the user +log_user 0 + +# read in other options +for {set i 0} {$i<$argc} {incr i} { + set arg [lindex $argv $i] + switch -- $arg "-prompt" { + incr i + set prompt_string [lindex $argv $i] + continue + } "-password" { + incr i + set password_string [lindex $argv $i] + continue + } "-oldpassword" { + incr i + set oldpassword_string [lindex $argv $i] + continue + } "-newpassword" { + incr i + set newpassword_string [lindex $argv $i] + continue + } "-verify" { + incr i + set verify_string [lindex $argv $i] + continue + } "-success" { + incr i + set success_string [lindex $argv $i] + continue + } "-login" { + incr i + set login_string [lindex $argv $i] + continue + } "-host" { + incr i + set host [lindex $argv $i] + continue + } "-timeout" { + incr i + set timeout [lindex $argv $i] + continue + } "-log" { + incr i + set log [lindex $argv $i] + continue + } "-output" { + incr i + set output_file [lindex $argv $i] + set output true + continue + } "-telnet" { + set login "telnet" + continue + } "-ssh" { + set login "ssh" + continue + } "-ssh-exec" { + set login "ssh-exec" + continue + } "-rlogin" { + set login "rlogin" + continue + } "-slogin" { + set login "slogin" + continue + } "-sudo" { + set login "sudo" + continue + } "-program" { + incr i + set program [lindex $argv $i] + continue + } +} + +# log session +if {$output} { + log_file $output_file +} + +set err [open $log "w" "0600"] + +# start remote session +if {[string match $login "rlogin"]} { + set pid [spawn rlogin $host -l $user] +} elseif {[string match $login "slogin"]} { + set pid [spawn slogin $host -l $user] +} elseif {[string match $login "ssh"]} { + set pid [spawn ssh $host -l $user] +} elseif {[string match $login "ssh-exec"]} { + set pid [spawn ssh $host -l $user $program] +} elseif {[string match $login "sudo"]} { + set pid [spawn sudo -u $user $program] +} elseif {[string match $login "telnet"]} { + set pid [spawn telnet $host] + expect -re $login_string { + sleep .5 + send "$user\r" + } +} else { + puts $err "Invalid login mode. Valid modes: rlogin, slogin, ssh, telnet, sudo\n" + close $err + exit 1 +} + +set old_password_notentered true + +if {![string match $login "sudo"]} { + # log in + expect { + -re $fingerprint_string {sleep .5 + send yes\r + exp_continue} + -re $password_string {sleep .5 + send $password(old)\r} + timeout {puts $err "Could not login to system (no password prompt)\n" + close $err + exit 1} + } + + # start password changing program + expect { + -re $prompt_string {sleep .5 + send $program\r} + # The following is for when passwd is the login shell or ssh-exec is used + -re $oldpassword_string {sleep .5 + send $password(old)\r + set old_password_notentered false} + timeout {puts $err "Could not login to system (bad old password?)\n" + close $err + exit 1} + } +} + +# send old password +if {$old_password_notentered} { + expect { + -re $oldpassword_string {sleep .5 + send $password(old)\r} + timeout {puts $err "Could not start passwd program (no old password prompt)\n" + close $err + exit 1} + } +} + +# send new password +expect { + -re $newpassword_string {sleep .5 + send $password(new)\r} + -re $badoldpassword_string {puts $err "Old password is incorrect\n" + close $err + exit 1} + timeout {puts "Could not change password (bad old password?)\n" + close $err + exit 1} +} + +# send new password again +expect { + -re $badpassword_string {puts $err "$expect_out(0,string)" + close $err + send \003 + sleep .5 + exit 1} + -re $verify_string {sleep .5 + send $password(new)\r} + timeout {puts $err "New password not valid (too short, bad password, too similar, ...)\n" + close $err + send \003 + sleep .5 + exit 1} +} + +# check response +expect { + -re $success_string {sleep .5 + send exit\r} + -re $badpassword_string {puts $err "$expect_out(0,string)" + close $err + exit 1} + timeout {puts $err "Could not change password.\n" + close $err + exit 1} +} + +# exit succsessfully +expect { + eof {close $err + exit 0} +} +close $err |