| @@ -0,0 +1,200 @@
+#!/bin/bash
+#
+# A Nagios Plugin that checks if there is any program listening on specified
+# TCP/UDP port.
+#
+# Copyright (C) 2007 by Cedric Defortis <cedric@aiur.fr>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software Foundation,
+# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+
+version=0.1
+STATE_OK=0
+STATE_WARNING=1
+STATE_CRITICAL=2
+STATE_UNKNOWN=3
+STATE_DEPENDENT=4
+
+
+progname=$(basename $0)
+
+print_help()
+{
+ cat <<'EOF'
+Usage: check_listen_tcp_udp.sh [-v] [-l <LISTENING_ADDRESS>] -p <PORT>
+ [-P <tcp|udp|any|>=tcp]
+
+A Nagios Plugin that checks if there is any program listening on specified
+TCP/UDP port.
+
+Options:
+ --help print this help message
+ --version print program version
+ -l, --listen=<ip_address> Specify the listening address. If unspecified no
+ verification is done on the listening address.
+ -p, --port=<port> The port number the service should listen to.
+ -P, --protocol=<tcp|udp|any> The protocol the service should used (By default,
+ the TCP protocol is used)
+ -v, --verbose verbose output
+
+Examples:
+
+To check that some daemon is listening on the port 80, with TCP protocol:
+ $ ./check_listen_tcp_udp -p 80
+
+To check that the server is able to answer to TCP _or_ UDP DNS requests:
+ $ ./check_listen_tcp_udp -p 53 -P
+
+Report bugs to <cedric@aiur.fr>
+EOF
+} #
+
+print_version()
+{
+ cat <<EOF
+$progname $version
+Copyright (C) 2009 Free Software Foundation, Inc.
+This is free software. You may redistribute copies of it under the terms of
+the GNU General Public License <http://www.gnu.org/licenses/gpl.html>.
+There is NO WARRANTY, to the extent permitted by law.
+
+Written by Cedric Defortis
+EOF
+} #
+
+SHORTOPTS="p:P:l:vVh"
+LONGOPTS="port,protocol,listen,help,version,verbose"
+
+if $(getopt -T >/dev/null 2>&1) ; [ $? = 4 ] ; then # New longopts getopt.
+ OPTS=$(getopt -o $SHORTOPTS --long $LONGOPTS -n "$progname" -- "$@")
+else # Old classic getopt.
+ # Special handling for --help and --version on old getopt.
+ case $1 in --help) print_help ; exit 0 ;; esac
+ case $1 in --version) print_version ; exit 0 ;; esac
+ OPTS=$(getopt $SHORTOPTS "$@")
+fi
+
+if [ $? -ne 0 ]; then
+ print_help;
+ exit 1
+fi
+
+eval set -- "$OPTS"
+
+# Ensure that $lipo is an integer
+declare -i lipo
+lipo=0
+listening_address="0.0.0.0"
+proto="tcp"
+verbose=false
+while [ $# -gt 0 ]; do
+ case $1 in
+ -h|--help)
+ print_help
+ exit 0
+ ;;
+ -V|--version)
+ print_version
+ exit 0
+ ;;
+ -l|--listen)
+ listening_address=$2
+ shift 2
+ ;;
+ -p|--port)
+ lipo=$2
+ shift 2
+ ;;
+ -P|--protocol)
+ proto=$2
+ shift 2
+ ;;
+ -v|--verbose)
+ verbose=true
+ shift
+ ;;
+ --)
+ shift
+ break
+ ;;
+ *)
+ echo "Internal Error: option processing error: $1" 1>&2
+ exit 1
+ ;;
+ esac
+done
+
+MAX_PORT_NUM=65535
+if test ! $lipo -eq $lipo 2> /dev/null
+then
+ echo "Invalid port number";
+ exit 1;
+fi;
+if test $lipo -ge $MAX_PORT_NUM -o $lipo -le 0
+then
+ echo "You MUST specify a valid listening port with option: '--port=PORT'"
+ exit 1;
+fi;
+
+NETSTAT_OPTS="-ln"
+case $proto in
+ "udp")
+ proto_code="udp"
+ NETSTAT_OPTS="${NETSTAT_OPTS}u"
+ ;;
+ "any")
+ proto_code="(tcp|udp)"
+ NETSTAT_OPTS="${NETSTAT_OPTS}tu"
+ ;;
+ *)
+ proto_code="tcp"
+ NETSTAT_OPTS="${NETSTAT_OPTS}t"
+ ;;
+esac;
+
+
+
+NETSTAT=`which netstat`
+NET_SED='sed -nr -e "s/^([a-zA-Z0-9]+) [0-9 ]+ ([0-9]+\.[0-9]+\.[0-9]+\.[0-9]+:[0-9]+|[:0-9]+) +.*/\1,\2/p"'
+NET_GREP="grep \":$lipo$\" | grep -E \"$proto_code\""
+
+if [[ $listening_address != "0.0.0.0" ]]
+then
+ NET_GREP="${NET_GREP} | grep \"$listening_address\""
+fi;
+
+cmd="$NETSTAT ${NETSTAT_OPTS} | $NET_SED | $NET_GREP"
+
+if $verbose
+then
+ echo $cmd
+ eval $cmd
+else
+ eval $cmd 2>&1 > /dev/null
+fi;
+
+
+# On a eu un resultat:
+if [[ $? -eq 0 ]]
+then
+ res=`eval $cmd`
+ res_proto=${res%,*}
+ res_listen=${res#*,}
+ #echo "OK - Listening on ${res_listen} (protocol: $res_proto)"
+ echo "OK - Listening on ${listening_address}:${lipo} (protocol: $proto)"
+ exit $STATE_OK;
+else
+ echo "CRITICAL - No service listening on ${listening_address}:${lipo} (protocol: $proto) "
+ exit $STATE_CRITICAL;
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