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Annotation of embedaddon/ntp/scripts/ntp-groper, revision 1.1

1.1     ! misho       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