openssh/contrib/redhat/sshd.init

   1 #!/bin/bash
   2 #
   3 # Init file for OpenSSH server daemon
   4 #
   5 # chkconfig: 2345 55 25
   6 # description: OpenSSH server daemon
   7 #
   8 # processname: sshd
   9 # config: /etc/ssh/ssh_host_key
  10 # config: /etc/ssh/ssh_host_key.pub
  11 # config: /etc/ssh/ssh_random_seed
  12 # config: /etc/ssh/sshd_config
  13 # pidfile: /var/run/sshd.pid
  14
  15 # source function library
  16 . /etc/rc.d/init.d/functions
  17
  18 # pull in sysconfig settings
  19 [ -f /etc/sysconfig/sshd ] && . /etc/sysconfig/sshd
  20
  21 RETVAL=0
  22 prog="sshd"
  23
  24 # Some functions to make the below more readable
  25 KEYGEN=/usr/bin/ssh-keygen
  26 SSHD=/usr/sbin/sshd
  27 RSA1_KEY=/etc/ssh/ssh_host_key
  28 RSA_KEY=/etc/ssh/ssh_host_rsa_key
  29 DSA_KEY=/etc/ssh/ssh_host_dsa_key
  30 PID_FILE=/var/run/sshd.pid
  31
  32 do_rsa1_keygen() {
  33         if [ ! -s $RSA1_KEY ]; then
  34                 echo -n $"Generating SSH1 RSA host key: "
  35                 if $KEYGEN -q -t rsa1 -f $RSA1_KEY -C '' -N '' >&/dev/null; then
  36                         chmod 600 $RSA1_KEY
  37                         chmod 644 $RSA1_KEY.pub
  38                         success $"RSA1 key generation"
  39                         echo
  40                 else
  41                         failure $"RSA1 key generation"
  42                         echo
  43                         exit 1
  44                 fi
  45         fi
  46 }
  47
  48 do_rsa_keygen() {
  49         if [ ! -s $RSA_KEY ]; then
  50                 echo -n $"Generating SSH2 RSA host key: "
  51                 if $KEYGEN -q -t rsa -f $RSA_KEY -C '' -N '' >&/dev/null; then
  52                         chmod 600 $RSA_KEY
  53                         chmod 644 $RSA_KEY.pub
  54                         success $"RSA key generation"
  55                         echo
  56                 else
  57                         failure $"RSA key generation"
  58                         echo
  59                         exit 1
  60                 fi
  61         fi
  62 }
  63
  64 do_dsa_keygen() {
  65         if [ ! -s $DSA_KEY ]; then
  66                 echo -n $"Generating SSH2 DSA host key: "
  67                 if $KEYGEN -q -t dsa -f $DSA_KEY -C '' -N '' >&/dev/null; then
  68                         chmod 600 $DSA_KEY
  69                         chmod 644 $DSA_KEY.pub
  70                         success $"DSA key generation"
  71                         echo
  72                 else
  73                         failure $"DSA key generation"
  74                         echo
  75                         exit 1
  76                 fi
  77         fi
  78 }
  79
  80 do_restart_sanity_check()
  81 {
  82         $SSHD -t
  83         RETVAL=$?
  84         if [ ! "$RETVAL" = 0 ]; then
  85                 failure $"Configuration file or keys are invalid"
  86                 echo
  87         fi
  88 }
  89
  90 start()
  91 {
  92         # Create keys if necessary
  93         do_rsa1_keygen
  94         do_rsa_keygen
  95         do_dsa_keygen
  96
  97         echo -n $"Starting $prog:"
  98         initlog -c "$SSHD $OPTIONS" && success || failure
  99         RETVAL=$?
 100         [ "$RETVAL" = 0 ] && touch /var/lock/subsys/sshd
 101         echo
 102 }
 103
 104 stop()
 105 {
 106         echo -n $"Stopping $prog:"
 107         killproc $SSHD -TERM
 108         RETVAL=$?
 109         [ "$RETVAL" = 0 ] && rm -f /var/lock/subsys/sshd
 110         echo
 111 }
 112
 113 reload()
 114 {
 115         echo -n $"Reloading $prog:"
 116         killproc $SSHD -HUP
 117         RETVAL=$?
 118         echo
 119 }
 120
 121 case "$1" in
 122         start)
 123                 start
 124                 ;;
 125         stop)
 126                 stop
 127                 ;;
 128         restart)
 129                 stop
 130                 start
 131                 ;;
 132         reload)
 133                 reload
 134                 ;;
 135         condrestart)
 136                 if [ -f /var/lock/subsys/sshd ] ; then
 137                         do_restart_sanity_check
 138                         if [ "$RETVAL" = 0 ] ; then
 139                                 stop
 140                                 # avoid race
 141                                 sleep 3
 142                                 start
 143                         fi
 144                 fi
 145                 ;;
 146         status)
 147                 status $SSHD
 148                 RETVAL=$?
 149                 ;;
 150         *)
 151                 echo $"Usage: $0 {start|stop|restart|reload|condrestart|status}"
 152                 RETVAL=1
 153 esac
 154 exit $RETVAL