--- nagios-plugin-check_scan/check_scan	2015-06-08 15:11:24.537599653 +0300
+++ nagios-plugin-check_scan-20051011/check_scan	2015-06-08 15:20:57.107351465 +0300
@@ -60,11 +60,18 @@
 # 3.  incorporate critical port lists
 #
 # - - - - - - - - SET THESE VARIABLES - - - - - - - - - - - - 
-BASEDIR=/etc/nagios/scancheck  #where to keep everything
-                               #must be nagios user writable
-NMAPPATH=/usr/bin              #where is nmap
+# where to keep everything
+# must be nagios user writable
+BASEDIR=/var/lib/nagios/check_scan
 #------------------------------------------------------------
 
+# constants from utils.sh
+STATE_OK=0
+STATE_WARNING=1
+STATE_CRITICAL=2
+STATE_UNKNOWN=3
+STATE_DEPENDENT=4
+
 #note... to run manually, you have to supply a dummy
 #argument 1, since the ip address is arg2
 
@@ -73,7 +80,7 @@
 if [ ! "$IP" ]; then
 
    echo "No IP address supplied"
-   exit 0
+   exit $STATE_UNKNOWN
 
 fi
 
@@ -111,38 +118,38 @@
 
 fi
 
-SCANTIME=`/bin/date +%Y%m%d-%H%M`
+SCANTIME=`date +%Y%m%d-%H%M`
 
-/usr/bin/nmap -sT -P0 $IP | /bin/grep -w open | \
-/usr/bin/sort > $SCANDIR/$IP
+nmap -sT -P0 $IP | grep -w open | \
+sort > $SCANDIR/$IP
 
-DIFF=`/usr/bin/comm -23 $SCANDIR/$IP $SCANDIR/$IP.base`
+DIFF=`comm -23 $SCANDIR/$IP $SCANDIR/$IP.base`
 
 if [ "$DIFF" ]; then
 
    CHANGED=1
-   DIFFSTR=`echo "$DIFF" | /usr/bin/awk '{print $1}' | \
-           /usr/bin/paste -s -d " " -`
+   DIFFSTR=`echo "$DIFF" | awk '{print $1}' | \
+           paste -s -d " " -`
 
 fi
 
 if [ $INITIAL -eq 1 ]; then
 
-   /bin/cat $SCANDIR/$IP > $SCANDIR/$IP.base
+   cat $SCANDIR/$IP > $SCANDIR/$IP.base
    echo "Initial scan"
-   exit 0
+   exit $STATE_OK
 
 fi
 
 if [ $CHANGED -eq 1 ]; then
 
    echo "Scan $SCANTIME: NEW $DIFFSTR"
-   exit 1
+   exit $STATE_WARNING
 
 else
 
    echo "$SCANTIME: no change"
-   exit 0
+   exit $STATE_OK
 
 fi