--- /dev/null
+#!/bin/sh
+
+# Copyright (c) 2013 Stefan Huber <shuber@sthu.org>
+#
+# Permission is hereby granted, free of charge, to any person
+# obtaining a copy of this software and associated documentation
+# files (the "Software"), to deal in the Software without
+# restriction, including without limitation the rights to use,
+# copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the
+# Software is furnished to do so, subject to the following
+# conditions:
+#
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+# OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+# HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+# OTHER DEALINGS IN THE SOFTWARE.
+
+. $(dirname $0)/utils.sh
+
+
+PROGNAME=$(basename $0)
+REVISION="0.1"
+
+usage() {
+
+ cat <<EOF
+check_rdns v$REVISION
+Copyright (c) 2013 Stefan Huber <shuber@sthu.org>
+
+Usage: $PROGNAME -H ip-address [OPTIONS]
+
+Arguments:
+ -H, --address IP-address The ip-addres on which reverse-DNS is performed.
+
+Options:
+ -h, --help Print this text.
+ -a, --expect=HOST The expected result.
+ -s, --server=HOST The DNS server to contact.
+ -t, --timeout=SEC Seconds before lookup times out. (Default: 10)
+ -w, --warning=MSEC Return warning if lookup time exceeds value.
+ -c, --critical=MSEC Return critical if lookup time exceeds value.
+ -V, --version Print version info.
+EOF
+}
+
+
+TEMP=`getopt -o "H:a:c:hs:t:w:V" --long "help,address:,expect:,critical:,server:,timeout:,warning:,version" -n "$0" -- "$@"`
+eval set - "$TEMP"
+
+ADDRESS=
+EXPECT=
+SERVER=
+TIMEOUT=10
+WARNING=
+CRITICAL=
+
+while true; do
+ case "$1" in
+ -h | --help )
+ usage
+ exit $STATE_OK ;;
+ -V | --version )
+ echo "$PROGNAME v$REVISION"
+ exit $STATE_OK ;;
+ -H | --address )
+ ADDRESS="$2"; shift 2 ;;
+ -a | --expect )
+ EXPECT="$2"; shift 2 ;;
+ -s | --server )
+ SERVER="$2"; shift 2 ;;
+ -t | --timeout )
+ TIMEOUT="$2"; shift 2 ;;
+ -w | --warning )
+ WARNING="$2"; shift 2 ;;
+ -c | --critical )
+ CRITICAL="$2"; shift 2 ;;
+ -- | *)
+ break ;;
+ esac
+done
+
+if [ -z "$ADDRESS" ]; then
+ echo "Error: No address given."
+ usage
+ exit $STATE_CRITICAL
+fi
+
+DIGOPTS="+time=$TIMEOUT +noquestion +noauthority -t PTR"
+[ -z "$SERVER" ] || DIGOPTS="@$SERVER $DIGOPTS"
+
+RESULT=$(dig $DIGOPTS -x "$ADDRESS"):
+DIGSTATUS=$?
+
+if [ $DIGSTATUS != "0" ]; then
+ echo "DNS failed: dig exit code $DIGSTATUS |"
+ exit $STATUS_CRITICAL
+fi
+
+# Get the actual result
+HOST=$(echo "$RESULT" | grep -m 1 -o "[[:space:]]IN[[:space:]]*PTR[[:space:]].*\.$" | awk '{ print $3 }' )
+if [ -z "$HOST" ]; then
+ echo "DNS failed: reverse DNS gave no answer. |"
+ exit $STATUS_CRITICAL
+fi
+
+
+# Get the query time in msec
+QUERYTIME=$(echo "$RESULT" | grep -m 1 "Query time:" | cut -d ":" -f 2 | awk '{ print $1 }')
+
+
+MATCHED=
+if [ -n "$EXPECT" ]; then
+ if [ "$EXPECT" != "$HOST" ]; then
+ echo "DNS critical - query result \"$HOST\" != \"$EXPECT\", query time: $QUERYTIME msec |"
+ exit $STATUS_CRITICAL
+ else
+ MATCHED=" (match ok)"
+ fi
+fi
+
+if [ -n "$CRITICAL" ] && [ "$QUERYTIME" -gt "$CRITICAL" ]; then
+ echo "DNS critical - query time $QUERYTIME msec too large ($CRITICAL msec), query result: \"$HOST\"$MATCHED |"
+ exit $STATUS_CRITICAL
+fi
+
+if [ -n "$WARNING" ] && [ "$QUERYTIME" -gt "$WARNING" ]; then
+ echo "DNS warning - query time $QUERYTIME msec too large ($WARNING msec), query result: \"$HOST\"$MATCHED |"
+ exit $STATUS_WARNING
+fi
+
+echo "DNS ok - query time $QUERYTIME msec, query result: \"$HOST\"$MATCHED |"
+exit $STATUS_OK
+
projects / shutils.git / blobdiff