unbound/contrib/validation-reporter.sh

   1 #!/bin/sh
   2 # validation reporter - reports validation failures to a collection server.
   3 # Copyright NLnet Labs, 2010
   4 # BSD license.
   5
   6
   7 ###
   8 # Here is the configuration for the validation reporter
   9 # it greps the failure lines out of the log and sends them to a server.
  10
  11 # The pidfile for the reporter daemon.
  12 pidfile="/var/run/validation-reporter.pid"
  13
  14 # The logfile to watch for logged validation failures.
  15 logfile="/var/log/unbound.log"
  16
  17 # how to notify the upstream
  18 # nc is netcat, it sends tcp to given host port.  It makes a tcp connection
  19 # and writes one log-line to it (grepped from the logfile).
  20 # the notify command can be: "nc the.server.name.org 1234"
  21 # the listening daemon could be:  nc -lk 127.0.0.1 1234 >> outputfile &
  22 notify_cmd="nc localhost 1234"
  23
  24
  25 ###
  26 # Below this line is the code for the validation reporter,
  27 # first the daemon itself, then the controller for the daemon.
  28 reporter_daemon() {
  29         trap "rm -f \"$pidfile\"" EXIT
  30         tail -F $logfile | grep --line-buffered "unbound.*info: validation failure" | \
  31         while read x; do
  32                 echo "$x" | $notify_cmd
  33         done
  34 }
  35
  36
  37 ###
  38 # controller for daemon.
  39 start_daemon() {
  40         echo "starting reporter"
  41         nohup $0 rundaemon </dev/null >/dev/null 2>&1 &
  42         echo $! > "$pidfile"
  43 }
  44
  45 kill_daemon() {
  46         echo "stopping reporter"
  47         if test -s "$pidfile"; then
  48                 kill `cat "$pidfile"`
  49                 # check it is really dead
  50                 if kill -0 `cat "$pidfile"` >/dev/null 2>&1; then
  51                         sleep 1
  52                         while kill -0 `cat "$pidfile"` >/dev/null 2>&1; do
  53                                 kill `cat "$pidfile"` >/dev/null 2>&1
  54                                 echo "waiting for reporter to stop"
  55                                 sleep 1
  56                         done
  57                 fi
  58         fi
  59 }
  60
  61 get_status_daemon() {
  62         if test -s "$pidfile"; then
  63                 if kill -0 `cat "$pidfile"`; then
  64                         return 0;
  65                 fi
  66         fi
  67         return 1;
  68 }
  69
  70 restart_daemon() {
  71         kill_daemon
  72         start_daemon
  73 }
  74
  75 condrestart_daemon() {
  76         if get_status_daemon; then
  77                 echo "reporter ("`cat "$pidfile"`") is running"
  78                 exit 0
  79         fi
  80         start_daemon
  81         exit 0
  82 }
  83
  84 status_daemon() {
  85         if get_status_daemon; then
  86                 echo "reporter ("`cat "$pidfile"`") is running"
  87                 exit 0
  88         fi
  89         echo "reporter is not running"
  90         exit 1
  91 }
  92
  93 case "$1" in
  94         rundaemon)
  95                 reporter_daemon
  96         ;;
  97         start)
  98                 start_daemon
  99         ;;
 100         stop)
 101                 kill_daemon
 102         ;;
 103         restart)
 104                 restart_daemon
 105         ;;
 106         condrestart)
 107                 condrestart_daemon
 108         ;;
 109         status)
 110                 status_daemon
 111         ;;
 112         *)
 113                 echo "Usage: $0 {start|stop|restart|condrestart|status}"
 114                 exit 2
 115         ;;
 116 esac
 117 exit $?