SliTaz Repositories

1 #!/bin/sh

2

3 # Optional: check user with a random question

4 file=/usr/share/ajaxterm/questions

5 if [ -s $file -a -r $file ]; then

6 line=1

7 while read md5 question; do

8 [ $(( $(date +%s) % $line )) -ne 0 ] && continue

9 ask_question="$question"

10 ask_md5="$md5"

11 line=$(($line+1))

12 done < $file

13 echo -n "$ask_question "

14 read -t 30 answer

15 [ $ask_md5 == $(echo $answer | md5sum | cut -d\ -f1) ] || exit 1

16 fi

17

18 # Get SSH server

19 server=""

20 if [ -x /usr/bin/ssh ]; then

21 echo -n "SSH server: "

22 read -t 300 server || exit 1

23 fi

24

25 # No SSH server given ? Try login

26 [ -n "$server" ] || exec /bin/login

27

28 # Allow non default SSH port with format server:port

29 sshport=""

30 case "$server" in

31 *:*) sshport="-p ${server#*:}"

32 server=${server%:*};;

33 esac

34

35 # heading ! in server name means open remote ssh port with a knock sequence

36 if [ -x /usr/bin/knock ]; then

37 case "$server" in

38 !*) server=${server#*!}

39 echo -n "Knock sequence (port[:proto]...): "

40 read -t 30 sequence && knock ${server#*@} $sequence

41 esac

42 fi

43

44 # Get SSH user if missing

45 case "$server" in

46 *@*) ;;

47 *) echo -n "$server login: "

48 read -t 30 user || exit 1

49 server="$user@$server";;

50 esac

51

52 # Launch OpenSSH or Dropbear

53 sshargs="-oPreferredAuthentications=keyboard-interactive,password -oNoHostAuthenticationForLocalhost=yes -oLogLevel=FATAL -F/dev/null";

54 [ -L /usr/bin/ssh ] && sshargs=""

55 exec ssh $sshport $sshargs $server