autosshd/etc/rc.d/init.d/autosshd

   1 #!/bin/sh
   2 #
   3 # autosshd      autossh system service
   4 #
   5 # chkconfig: 2345 30 60
   6 #
   7 # description: autosshd run autossh as system service
   8 #
   9
  10 processname="autossh"
  11 startname="/usr/share/autosshd/autossh-conf" #need for export var, because start shell by root and run autossh by _autossh user
  12 # processname: $processname
  13 #
  14
  15 # Do not load RH compatibility interface.
  16 WITHOUT_RC_COMPAT=1
  17
  18 # Source function library.
  19 . /etc/init.d/functions
  20
  21 # Source networking configuration.
  22 SourceIfNotEmpty /etc/sysconfig/network
  23
  24 # AutoSSHDaemon configuration
  25 SYSCONFIGFILE="/etc/sysconfig/autosshd"
  26 SourceIfNotEmpty $SYSCONFIGFILE
  27 # Load AutoSSHD variables and init_autossh function
  28 SourceIfNotEmpty "$startname"
  29
  30
  31 ###========= Functions =========
  32 #===== help message =====
  33 help()
  34 {
  35     echo "
  36 Usage: ${0##*/} ACTION [CHANNEL]
  37 ACTION  - requested action of all or given AutoSSH channel
  38 CHANNEL - optional name of AutoSSH channel (with corresponding
  39           CHANNEL.* files in $CONFIGDIR)
  40
  41 Usefull actions is:
  42 start       - start all configured channels except listed
  43               in AUTOSTART variable in $CONFIGDIR/CHANNEL.conf file
  44 stop        - stop all running channels
  45 restart     - restart channels that are configured for autostart
  46 reload      - restart only running channels
  47 list        - print list of configured channels
  48 status      - print status of running channels
  49 help        - print this message.
  50 testssh     - test connection configuration by ssh.
  51
  52 "
  53     RETVAL=1
  54     return $RETVAL
  55 }
  56
  57 do_run_one()
  58 {
  59     if [ -f $1 ]; then
  60         SourceIfNotEmpty $1
  61
  62         # skip if in AUTOSTART mode
  63         is_yes "$AUTOSTART" || return 0
  64
  65         [ -e "$AUTOSSH_LOCKFILE" ] && echo "autossh to $(basename $1 .conf) service is already running." && return 1
  66
  67         start_daemon --lockfile "$AUTOSSH_LOCKFILE" \
  68             --user $AUTOSSHUSER --displayname "autossh to ${HOST}" -- $startname $1 "${AUTOSSH_OPTIONS}"
  69         RETVAL=$?
  70         sleep 1
  71         return $RETVAL
  72     else
  73         echo "Configuration file $1 not found"
  74         RETVAL=1
  75         return $RETVAL
  76     fi
  77 }
  78
  79 do_stop_one()
  80 {
  81     if [ -f $1 ]; then
  82         SourceIfNotEmpty $1
  83         if [ -s $AUTOSSH_PIDFILE ]; then
  84             stop_daemon --pidfile "$AUTOSSH_PIDFILE" --lockfile "$AUTOSSH_LOCKFILE" \
  85                 --expect-user $AUTOSSHUSER --name $processname --displayname "autossh to ${HOST}" -- $processname
  86             RETVAL=$?
  87             return $RETVAL
  88         else
  89             msg_not_running "autossh for `basename $1 .conf`"
  90             echo
  91         fi
  92     else
  93         echo "Configuration file $1 not found"
  94         RETVAL=1
  95         return $RETVAL
  96     fi
  97 }
  98
  99
 100 show_status()
 101 {
 102         RETVAL=0
 103         [ -n "$CHANNELS" ] || running_channels
 104
 105         if [ -z "$CHANNELS" ]; then
 106                 msg_not_running autossh
 107                 echo
 108                 RETVAL=1
 109         else
 110                 for CHANNEL in $CHANNELS; do
 111                     init_autossh $config
 112                     status --pidfile "$PIDFILEDIR/$CHANNEL.pid" --lockfile "$LOCKFILEDIR/$CHANNEL.lck" \
 113                     --expect-user $AUTOSSHUSER --name $processname --displayname "autossh to $CHANNEL" -- $processname
 114                     RETVAL=$(( $RETVAL + $? ))
 115                 done
 116         fi
 117         return $RETVAL
 118 }
 119
 120 start()
 121 {
 122     # run only listed channels
 123     if [ -n "$CHANNELS" ] ; then
 124         for i in $CHANNELS; do
 125             do_run_one $CONFIGDIR/$i.conf
 126             init_autossh $config
 127         done
 128         return 0
 129     fi
 130
 131     # run all scheduled channels
 132     CHANNELS=$(get_channels_list)
 133     for config in $CHANNELS; do
 134         init_autossh $config
 135         do_run_one $config
 136     done
 137     return 0
 138 }
 139
 140 stop()
 141 {
 142     [ -n "$CHANNELS" ] || running_channels
 143
 144     for config in $CHANNELS; do
 145         SourceIfNotEmpty $config
 146         init_autossh $config
 147         do_stop_one $CONFIGDIR/$config.conf
 148     done
 149     return 0
 150 }
 151
 152 get_channels_list()
 153 {
 154     /bin/ls $CONFIGDIR/*.conf 2>/dev/null #returns only filenames
 155 }
 156
 157 list_channels()
 158 {
 159     LIST=$(get_channels_list)
 160     echo "Configured channels:"
 161         for config in $LIST; do
 162             SourceIfNotEmpty $config
 163             echo "   `basename $config .conf`. AUTOSTART: ${AUTOSTART} "
 164         done
 165     return 0
 166 }
 167
 168 running_channels()
 169 {
 170     LIST=`/bin/ls $PIDFILEDIR/*.pid 2>/dev/null`
 171     CHANNELS=""
 172     for proc in $LIST; do
 173         CHANNELS="$CHANNELS`basename $proc .pid` "
 174     done
 175     return 0
 176 }
 177
 178 ###====== Main =====
 179 RETVAL=0
 180
 181 OP=$1
 182 shift
 183 CHANNELS="$@"
 184
 185 is_yes "$NETWORKING" || return 0
 186
 187 # See how we were called.
 188 case "$OP" in
 189         start)
 190             start
 191             ;;
 192         stop|condstop)
 193             stop
 194             ;;
 195         reload|restart)
 196             stop
 197             sleep 2
 198             start
 199             ;;
 200         condrestart)
 201             running_channels
 202             if [ -n $CHANNELS ] ; then
 203                 restart
 204             fi
 205             ;;
 206         status)
 207             show_status
 208             ;;
 209         list)
 210             list_channels
 211             ;;
 212         help)
 213             help
 214             ;;
 215         testssh)
 216             su - -s /bin/sh -c "autosshd-ssh $1" _autossh
 217             ;;
 218         *)
 219                 msg_usage "${0##*/} {start|stop|reload|condrestart|condstop|restart|status|list|help|testssh}"
 220                 RETVAL=1
 221 esac
 222
 223 exit $RETVAL