#!/usr/bin/expect -f

set timeout 5

set load_fh [open "targets.txt" r]
set ip_list [split [read $load_fh] "\n"]
close $load_fh

# router user name
set name "admin"

# router password
set pass "1234"

# Read command as arg to this script
set routercmd [lindex $argv 0]


foreach ip $ip_list {
        if {$ip != ""} {
                send_user "telnet to this host: $ip\n"

                # Connect
                spawn telnet $ip

                # router user name
                set name "admin"

                # router password
                set pass "1234"

                # Read command as arg to this script
                set routercmd [lindex $argv 0]

                expect_before -re {Bad username|Login incorrect} {
                        send_user -- "$ip: auth problem. last output:\n $expect_out(buffer)\n=========\n"
                        catch {exp_close}
                        continue
                    } -re {Unable to connect to remote host|Connection closed by foreign host} {
                        send_user -- "$ip: connection problem. last output:\n $expect_out(buffer)\n=========\n"
                        catch {exp_close}
                        continue
                    } timeout {
                        send_user "$ip: timeout"
                        catch {exp_close}
                        continue
                    } eof {
                        send_user "$ip: close connection. last output:\n $expect_out(buffer)\n=======\n"
                        continue
                    }

                # send username & password
                expect -re {ogin|sername} {
                        send -- "$name\r"
                        exp_continue
                    } {assword} {
                        send -- "$pass\r"
                    }

                # expect one of these strings and take an action depending which one comes
                # replace "Login incorrect" with whatever message your router sends
                expect {cli>} {
                        send "shell\n"

                        # execute command , supposed we r using ash at aztech router
                        expect -re {#} {
                            send -- "$routercmd\r"
                        }
                    }
                send_user "end processing host: $ip\n\n"
                # close the child process
                catch {exp_close}
        }
}