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#!/usr/bin/env expect
# Author: Michael Weiss
# License: Unlicense (https://unlicense.org/UNLICENSE)
# Note: Using Python would've probably been a better idea...
proc printHelp {} {
send_user "Usage:\n"
send_user "\tfsi-copy-id FILE\n"
send_user "\t\tWhere FILE is your SSH public key file.\n"
send_user "\tfsi-copy-id -h\n"
send_user "\tfsi-copy-id --help\n"
send_user "\t\tPrint this help.\n"
exit 0
}
proc parseArguments {} {
global argc
if { $argc != 1 } {
send_error "Error: Wrong usage.\n"
send_error "Try 'fsi-copy-id --help' for more information.\n"
exit 1
}
global argv
if { [lindex $argv 0] == "-h" || [lindex $argv 0] == "--help" } {
printHelp
}
set fileName [lindex $argv 0]
if { [file isfile $fileName] == 0 } {
send_error "Error: The file $fileName doesn't exist.\n"
exit 1
}
return $fileName
}
proc getSshUser {} {
send_user "Please enter your SSH username: "
expect_user -re "(.*)\n"
set user $expect_out(1,string)
return $user
}
proc getSshPassword {} {
stty -echo
send_user "Please enter your SSH password: "
expect_user -re "(.*)\n"
set password $expect_out(1,string)
send_user "\n"
stty echo
return $password
}
# Parse the arguments and try to get the identity file
set identityFile [parseArguments]
# Request the SSH user
set user [getSshUser]
# Request the SSH password
set password [getSshPassword]
set hosts {"amy" "anja" "kim" "lara" "lea" "nina" "sessel" "sofa" "teri"}
# Try to install the key
set hostsSkipped 0
set keysInstalled 0
foreach host $hosts {
# "-n" for a dry-run
spawn "ssh-copy-id" "-i" "$identityFile" "-o" "StrictHostKeyChecking=yes" "$user@$host.fsi.uni-tuebingen.de"
expect {
"$user@$host.fsi.uni-tuebingen.de's password:" {send "$password\r"}
"ERROR: Host key verification failed." {
send_error "Please make sure that you follow our setup: "
send_error "https://www.fsi.uni-tuebingen.de/interna/admin-doku/ssh\n"
send_error "You must either use the UserKnownHostsFile option "
send_error "or have all host keys in your ~/.ssh/known_hosts\n"
exit 1
}
"WARNING: All keys were skipped because they already exist on the remote system." {
incr hostsSkipped; continue
}
timeout {
puts stderr "Error: Timeout."
exit 1
}
eof {
puts stderr "Error: Something unexpected happened."
exit 1
}
}
expect {
"Number of key(s) added:" {incr keysInstalled}
"Permission denied, please try again." {
puts stderr "Error: Wrong password."
exit 1
}
timeout {
puts stderr "Error: Timeout."
exit 1
}
eof {
puts stderr "Error: Something unexpected happened."
exit 1
}
}
}
# No error detected -> success
send_user "Success:\n"
send_user " Total hosts: [llength $hosts]\n"
send_user " Installed key on $keysInstalled hosts.\n"
send_user " Key already installed on $hostsSkipped hosts.\n"
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