dist/ntp/scripts/ntp-groper

   1 #!/bin/sh
   2 #
   3 # ntpgroper host ...
   4 #
   5 # This script checks each hostname given as an argument to see if
   6 # it is running NTP.  It reports one of the following messages (assume
   7 # the host is named "dumbo.hp.com":
   8 #
   9 #   dumbo.hp.com not registered in DNS
  10 #   dumbo.hp.com not responding to ping
  11 #   dumbo.hp.com refused ntpq connection
  12 #   dumbo.hp.com not responding to NTP
  13 #   dumbo.hp.com answers NTP version 2, stratum: 3, ref: telford.nsa.hp.com
  14 #   dumbo.hp.com answers NTP version 3, stratum: 3, ref: telford.nsa.hp.com
  15 #
  16 # It ain't pretty, but it is kinda useful.
  17 #
  18 # Walter Underwood, 11 Feb 1993, wunder@hpl.hp.com
  19 #
  20 # converted to /bin/sh from /bin/ksh by scott@ee.udel.edu 24 Mar 1993
  21
  22 PATH="/usr/local/etc:$PATH" export PATH
  23
  24 verbose=1
  25 logfile=/tmp/cntp-log$$
  26 ntpqlog=/tmp/cntp-ntpq$$
  27
  28 # I wrap the whole thing in parens so that it is possible to redirect
  29 # all the output somewhere, if desired.
  30 (
  31 for host in $*
  32 do
  33     # echo "Trying $host."
  34
  35     gethost $host > /dev/null 2>&1
  36     if [ $? -ne 0 ]
  37     then
  38         echo "$host not registered in DNS"
  39         continue
  40     fi
  41
  42     ping $host 64 1 > /dev/null 2>&1
  43     if [ $? -ne 0 ]
  44     then
  45         echo "$host not responding to ping"
  46         continue
  47     fi
  48
  49     # Attempt to contact with version 3 ntp, then try version 2.
  50     for version in 3 2
  51     do
  52
  53         ntpq -c "ntpversion $version" -p $host > $ntpqlog 2>&1
  54
  55         if fgrep -s 'Connection refused' $ntpqlog
  56         then
  57             echo "$host refused ntpq connection"
  58             break
  59         fi
  60
  61         responding=1
  62         fgrep -s 'timed out, nothing received' $ntpqlog > /dev/null && responding=0
  63
  64         if   [ $responding -eq 1 ]
  65         then
  66             ntpq -c "ntpversion $version" -c rl $host > $ntpqlog
  67
  68             # First we extract the reference ID (usually a host or a clock)
  69             synchost=`fgrep "refid=" $ntpqlog`
  70             #synchost=${synchost##*refid=} # strip off the beginning of the line
  71             #synchost=${synchost%%,*}      # strip off the end
  72             synchost=`expr "$synchost" : '.*refid=\([^,]*\),.*'`
  73
  74             # Next, we get the stratum
  75             stratum=`fgrep "stratum=" $ntpqlog`
  76             #stratum=${stratum##*stratum=}
  77             #stratum=${stratum%%,*}
  78             stratum=`expr "$stratum" : '.*stratum=\([^,]*\),.*'`
  79
  80             echo "$host answers NTP version $version, stratum: $stratum, ref: $synchost"
  81             break;
  82         fi
  83
  84         if [ $version -eq 2 -a $responding -eq 0 ]
  85         then
  86             echo "$host not responding to NTP"
  87         fi
  88     done
  89 done
  90 )
  91 # ) >> $logfile
  92
  93 if [ -f $ntpqlog ]; then
  94     rm $ntpqlog
  95 fi