#!/bin/sh
#
# Plugin to monitor the number of CVE vulnerabilities present on a Debian
# system (using debsecan). Might work on other distib, who knows...
#
# Inspiration of the moment 10/10/2007
#
# Nicolas BOUTHORS <nbouthors@nbi.fr> http://nbi.fr/
#
# Licence : Public Domain
#
#%# family=auto
#%# capabilities=autoconf

# Auto enable if we have debsecan only
if [ "$1" = "autoconf" ] ; then
  if [ -x /usr/bin/debsecan ]; then
    echo yes
  else
    echo no
  fi
  exit 0
fi

# Fail if we don't have debsecan
if [ ! -x /usr/bin/debsecan ]; then
  exit 1
fi

if [ "$1" = "config" ] ; then
  cat <<EOF_
graph_title DebSecan : vulnerabilities
graph_args -l 0 --base 1000
graph_vlabel number of CVE
graph_category system
graph_period second
graph_info This graph show the number of known vulnerabilities present on your system. Use debsecan to see details.
high.label high
high.colour FF0000
high.type GAUGE
high.draw AREASTACK
high.min 0
high.info The number of CVEs marked high priority
medium.label medium
medium.colour FFA500
medium.type GAUGE
medium.draw AREASTACK
medium.min 0
medium.info The number of CVEs marked medium priority
low.label low
low.colour 0000FF
low.type GAUGE
low.draw AREASTACK
low.min 0
low.info The number of CVEs marked low priority
other.label other
other.colour 00A5FF
other.type GAUGE
other.draw AREASTACK
other.min 0
other.info The number of CVEs with unspecified priority
EOF_
  exit 0
fi

CVERE="\(\(CVE\|TMP\)[-0-9A-Fa-f]\+\)"
CVECOUNTRE="s/^.*\([0-9]\+\) \+\([^ ]\+\)/\2 (\1)/"

OUT=`mktemp -t debsecan.XXXXXX`
HIGH=`mktemp -t debsecan.XXXXXX`
MEDIUM=`mktemp -t debsecan.XXXXXX`
LOW=`mktemp -t debsecan.XXXXXX`
OTHER=`mktemp -t debsecan.XXXXXX`
debsecan 2> /dev/null > ${OUT}
grep 'high urgency' ${OUT} > ${HIGH}
grep 'medium urgency' ${OUT} > ${MEDIUM}
grep 'low urgency)' ${OUT} > ${LOW}
grep -v '\(low\|medium\|high\) urgency' ${OUT} > ${OTHER}

high=`cat ${HIGH} | wc -l`
medium=`cat ${MEDIUM} | wc -l`
low=`cat ${LOW} | wc -l`
other=`cat ${OTHER} | wc -l`

cat <<EOF
high.value $high
high.extinfo `echo $(cut -f 2 -d" " ${HIGH} | uniq -c | sort -nr | sed  "${CVECOUNTRE}")`
medium.value $medium
medium.extinfo `echo $(cut -f 2 -d" " ${MEDIUM} | uniq -c | sort -nr | sed  "${CVECOUNTRE}")`
low.value $low
low.extinfo `echo $(cut -f 2 -d" " ${LOW} | uniq -c | sort -nr | sed  "${CVECOUNTRE}")`
other.value $other
other.extinfo `echo $(cut -f 2 -d" " ${OTHER} | uniq -c | sort -nr | sed  "${CVECOUNTRE}")`
EOF

rm -f ${OUT} ${HIGH} ${MEDIUM} ${LOW} ${OTHER}