snort: merge Altell packaging fixes

Snort was independently packaged by Altell some time ago, so merge things
we've done into OE.dev:
 * fix packaging of snort dynamic libs
 * fix DEPENDS, libnet is not needed is not specifically used
 * fix RDEPENDS, no need to specify libs expicitly, barnyard is rather a
   RRECOMMENDS than RDEPENDS since snort lives just fine without it
 * add libprelude support and configure accordingly
 * add some useful configure options
 * add init/volatile/default setup which is necessary for the package
 * add postinst creating snort/snort user/group
 * add logrotate script

Signed-off-by: Roman I Khimov <khimov@altell.ru>

4 files changed, 481 insertions, 0 deletions

diff --git a/recipes/snort/files/default b/recipes/snort/files/default
new file mode 100644
index 0000000000..afd3840d36
--- /dev/null
+++ b/recipes/snort/files/default
@@ -0,0 +1,42 @@
+# Parameters for the daemon
+# Add any additional parameteres here.
+PARAMS="-m 027 -D -d "
+#
+# Snort user
+# This user will be used to launch snort. Notice that the 
+# preinst script of the package might do changes to the user 
+# (home directory, User Name) when the package is upgraded or
+# reinstalled.  So, do *not* change this to 'root' or to any other user 
+# unless you are sure there is no problem with those changes being introduced.
+# 
+SNORTUSER="snort"
+#
+# Logging directory
+# Snort logs will be dropped here and this will be the home
+# directory for the SNORTUSER. If you change this value you should
+# change the /etc/logrotate.d/snort definition too, otherwise logs
+# will not be rotated properly.
+#
+LOGDIR="/var/log/snort"
+#
+# Snort group
+# This is the group that the snort user will be added to.
+#
+SNORTGROUP="snort"
+# 
+# Allow Snort's init.d script to work if the configured interfaces
+# are not available. Set this to yes if you configure Snort with
+# multiple interfaces but some might not be available on boot
+# (e.g. wireless interfaces)
+# 
+# Note: In order for this to work the 'iproute' package needs to 
+# be installed.
+ALLOW_UNAVAILABLE="no"
+
+# Local configs
+#
+LOCAL_SNORT_STARTUP=boot
+LOCAL_SNORT_HOME_NET="192.168.0.0/16"
+LOCAL_SNORT_INTERFACE=""
+LOCAL_SNORT_STATS_RCPT="root"
+LOCAL_SNORT_STATS_THRESHOLD="1"
diff --git a/recipes/snort/files/logrotate b/recipes/snort/files/logrotate
new file mode 100644
index 0000000000..ef3e4afac8
--- /dev/null
+++ b/recipes/snort/files/logrotate
@@ -0,0 +1,12 @@
+/var/log/snort/*.log /var/log/snort/alert {
+    size 1M
+    missingok
+    compress
+    delaycompress
+    rotate 10
+    sharedscripts
+    postrotate
+	/etc/init.d/snort restart
+    endscript
+}
+
diff --git a/recipes/snort/files/snort.init b/recipes/snort/files/snort.init
new file mode 100755
index 0000000000..af6661933a
--- /dev/null
+++ b/recipes/snort/files/snort.init
@@ -0,0 +1,425 @@
+#!/bin/sh -e
+#
+# Init.d script for Snort in OpenEmbedded, based on Debian's script
+#
+# Copyright (c) 2009 Roman I Khimov <khimov@altell.ru>
+#
+# Copyright (c) 2001 Christian Hammers 
+# Copyright (c) 2001-2002 Robert van der Meulen
+# Copyright (c) 2002-2004 Sander Smeenk <ssmeenk@debian.org>
+# Copyright (c) 2004-2007 Javier Fernandez-Sanguino <jfs@debian.org>
+#
+# This is free software; you may 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 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 with
+# the Debian operating system, in /usr/share/common-licenses/GPL;  if
+# not, write to the Free Software Foundation, Inc., 59 Temple Place,
+# Suite 330, Boston, MA 02111-1307 USA
+#
+### BEGIN INIT INFO
+# Provides:          snort
+# Required-Start:    $time $network $local_fs
+# Required-Stop:     
+# Should-Start:      $syslog
+# Should-Stop:       
+# Default-Start:     2 3 4 5
+# Default-Stop:      0 1 6
+# Short-Description: Lightweight network intrusion detection system
+# Description:       Intrusion detection system that will
+#                    capture traffic from the network cards and will
+#                    match against a set of known attacks.
+### END INIT INFO
+
+PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
+
+test $DEBIAN_SCRIPT_DEBUG && set -v -x
+
+DAEMON=/usr/bin/snort
+NAME=snort
+DESC="Network Intrusion Detection System"
+
+. /etc/default/snort
+COMMON="$PARAMS -l $LOGDIR -u $SNORTUSER -g $SNORTGROUP"
+
+test -x $DAEMON || exit 0
+test -z "$LOCAL_SNORT_HOME_NET" && LOCAL_SNORT_HOME_NET="192.168.0.0/16"
+
+# to find the lib files
+cd /etc/snort
+
+running()
+{
+        PIDFILE=$1
+# No pidfile, probably no daemon present
+        [ ! -f "$PIDFILE" ] && return 1
+        pid=`cat $PIDFILE`
+# No pid, probably no daemon present
+        [ -z "$pid" ] && return 1
+        [ ! -d /proc/$pid ] &&  return 1
+        cmd=`cat /proc/$pid/cmdline | tr "\000" "\n"|head -n 1 |cut -d : -f 1`
+# No daemon
+        [ "$cmd" != "$DAEMON" ] &&  return 1
+        return 0
+}
+
+
+check_log_dir() {
+# Does the logging directory belong to Snort?
+	# If we cannot determine the logdir return without error
+	# (we will not check it)
+	# This will only be used by people using /etc/default/snort
+	[ -n "$LOGDIR" ] || return 0
+	[ -n "$SNORTUSER" ] || return 0
+	if [ ! -e "$LOGDIR" ] ; then
+		echo "ERR: logging directory $LOGDIR does not exist"
+		return 1
+	elif [ ! -d "$LOGDIR" ] ; then
+		echo "ERR: logging directory $LOGDIR does not exist"
+		return 1
+	else
+		# Don't worry, be happy
+		true
+	fi
+	return 0
+}
+
+check_root()  {
+    if [ "$(id -u)" != "0" ]; then
+        echo "You must be root to start, stop or restart $NAME."
+        exit 4
+    fi
+}
+
+case "$1" in
+  start)
+        check_root
+	echo "Starting $DESC " "$NAME"
+
+        if [ -e /etc/snort/db-pending-config ] ; then
+		echo "/etc/snort/db-pending-config file found"
+		echo "Snort will not start as its database is not yet configured."
+		echo "Please configure the database as described in"
+		echo "/usr/share/doc/snort-{pgsql,mysql}/README-database.Debian"
+		echo "and remove /etc/snort/db-pending-config"
+		exit 6
+	fi
+
+        if ! check_log_dir; then
+		echo " will not start $DESC!"
+		exit 5
+	fi
+	if [ "$LOCAL_SNORT_STARTUP" = "dialup" ]; then
+		shift
+		set +e
+		/etc/ppp/ip-up.d/snort "$@"
+		ret=$?
+                if  [ $ret -eq 0 ] ; then
+                  echo 0
+                else
+                  echo 1
+                fi
+		exit $ret
+	fi
+
+	# Usually, we start all interfaces
+	interfaces="$LOCAL_SNORT_INTERFACE"
+
+	# If we are requested to start a specific interface...
+	test "$2" && interfaces="$2"
+
+        # If the interfaces list is empty stop (no error)
+        if [ -z "$interfaces" ] ; then
+            echo "no interfaces configured, will not start"
+            echo 0
+            exit 0
+        fi
+
+	myret=0
+	got_instance=0
+	for interface in $interfaces; do
+		got_instance=1
+		echo "($interface"
+
+                # Check if the interface is available:
+                # - only if iproute is available
+                # - the interface exists 
+                # - the interface is up
+                if ! [ -x /sbin/ip ] || ( ip link show dev "$interface" >/dev/null 2>&1 && [ -n "`ip link show up "$interface" 2>/dev/null`" ] ) ; then
+
+		PIDFILE=/var/run/snort_$interface.pid
+                CONFIGFILE=/etc/snort/snort.$interface.conf
+
+                # Defaults:
+		fail="failed (check /var/log/syslog and /var/log/snort)"
+                run="yes"
+
+                if [ -e "$PIDFILE" ] && running $PIDFILE; then
+                        run="no" 
+                        # Do not start this instance, it is already runing
+                fi
+
+                if [ "$run" = "yes" ] ; then
+                    if [ ! -e "$CONFIGFILE" ]; then
+                        echo "no /etc/snort/snort.$interface.conf found, defaulting to snort.conf"
+                        CONFIGFILE=/etc/snort/snort.conf
+                    fi
+
+                    set +e
+                    /sbin/start-stop-daemon --start --quiet  \
+                        --pidfile "$PIDFILE" \
+                        --exec $DAEMON -- $COMMON $LOCAL_SNORT_OPTIONS \
+                        -c $CONFIGFILE \
+                        -S "HOME_NET=[$LOCAL_SNORT_HOME_NET]" \
+                        -i $interface >/dev/null
+                    ret=$?
+                    case "$ret" in
+			0)
+                                echo  "...done)"
+				;;
+			*)
+				echo "...ERROR: $fail)"
+				myret=$(expr "$myret" + 1)
+				;;
+                     esac
+                     set -e
+                else
+                        echo "...already running)"
+                fi
+
+                else
+                # What to do if the interface is not available
+                # or is not up
+                        if [ "$ALLOW_UNAVAILABLE" != "no" ] ; then 
+                            echo "...interface not available)"
+                        else 
+                            echo "...ERROR: interface not available)"
+                            myret=$(expr "$myret" + 1)
+                        fi
+                fi
+	done
+
+	if [ "$got_instance" = 0 ] && [ "$ALLOW_UNAVAILABLE" = "no" ]; then
+		echo "No snort instance found to be started!" >&2
+		exit 6
+	fi
+
+        if  [ $myret -eq 0 ] ; then
+            echo 0
+        else
+            echo 1
+        fi
+	exit $myret
+	;;
+  stop)
+        check_root
+        echo "Stopping $DESC " "$NAME"
+    
+	if [ "$LOCAL_SNORT_STARTUP" = "dialup" ]; then
+		shift
+		set +e
+		/etc/ppp/ip-down.d/snort "$@"
+		ret=$?
+                if  [ $ret -eq 0 ] ; then
+                    echo 0
+                else
+                  echo 1
+                fi
+		exit $ret
+	fi
+
+	# Usually, we stop all current running interfaces
+	pidpattern=/var/run/snort_*.pid
+
+	# If we are requested to stop a specific interface...
+	test "$2" && pidpattern=/var/run/snort_"$2".pid
+
+	got_instance=0
+        myret=0
+	for PIDFILE in $pidpattern; do
+		# This check is also needed, if the above pattern doesn't match
+		test -f "$PIDFILE" || continue
+
+		got_instance=1
+		interface=$(basename "$PIDFILE" .pid | sed -e 's/^snort_//')
+
+		echo "($interface"
+
+		set +e
+                if [ ! -e "$PIDFILE" -o -r "$PIDFILE" ] ; then
+# Change ownership of the pidfile
+		    /sbin/start-stop-daemon --stop --retry 5 --quiet --oknodo \
+			--pidfile "$PIDFILE" --exec $DAEMON >/dev/null
+                    ret=$?
+                    rm -f "$PIDFILE"
+                    rm -f "$PIDFILE.lck"
+                else
+                     echo "cannot read $PIDFILE"
+                     ret=4
+                fi
+		case "$ret" in
+			0)
+                                echo  "...done)"
+				;;
+			*)
+				echo "...ERROR)"
+				myret=$(expr "$myret" + 1)
+				;;
+		esac
+                set -e
+
+	done
+
+	if [ "$got_instance" = 0 ]; then
+		log_warning_msg "No running snort instance found"
+                exit 0 # LSB demands we don't exit with error here
+	fi
+        if  [ $myret -eq 0 ] ; then
+            echo 0
+        else
+            echo 1
+        fi
+	exit $myret
+	;;
+  restart|force-restart|reload|force-reload)
+        check_root
+	# Usually, we restart all current running interfaces
+	pidpattern=/var/run/snort_*.pid
+
+	# If we are requested to restart a specific interface...
+	test "$2" && pidpattern=/var/run/snort_"$2".pid
+
+	got_instance=0
+	for PIDFILE in $pidpattern; do
+		# This check is also needed, if the above pattern doesn't match
+		test -f "$PIDFILE" || continue
+
+		got_instance=1
+		interface=$(basename "$PIDFILE" .pid | sed -e 's/^snort_//')
+		$0 stop $interface || true
+		$0 start $interface || true
+	done
+
+	if [ "$got_instance" = 0 ]; then
+		echo "No snort instance found to be stopped!" >&2
+                exit 6
+	fi
+	;;
+  status)
+# Non-root users can use this (if allowed to)
+        echo "Status of snort daemon(s)"
+	interfaces="$LOCAL_SNORT_INTERFACE"
+	# If we are requested to check for a specific interface...
+	test "$2" && interfaces="$2"
+        err=0
+        pid=0
+	for interface in $interfaces; do
+                echo " $interface "
+                pidfile=/var/run/snort_$interface.pid
+                if [ -f  "$pidfile" ] ; then
+                        if [ -r "$pidfile" ] ; then
+                            pidval=`cat $pidfile`
+                            pid=$(expr "$pid" + 1)
+                            if ps -p $pidval | grep -q snort; then
+                                echo "OK"
+                            else
+				echo "ERROR"
+				err=$(expr "$err" + 1)
+			    fi
+                         else
+	       		     echo "ERROR: cannot read status file"
+                             err=$(expr "$err" + 1)
+                         fi
+                 else
+                       echo "ERROR"
+                       err=$(expr "$err" + 1)
+                 fi
+        done
+        if [ $err -ne 0 ] ; then
+            if [ $pid -ne 0 ] ; then
+# More than one case where pidfile exists but no snort daemon
+# LSB demands a '1' exit value here
+                echo  1
+                exit 1
+            else
+# No pidfiles at all
+# LSB demands a '3' exit value here
+                echo  3
+                exit 3
+            fi
+        fi
+        echo  0
+        ;;
+  config-check)
+        echo "Checking $DESC configuration" 
+	if [ "$LOCAL_SNORT_STARTUP" = "dialup" ]; then
+		echo "Config-check is currently not supported for snort in Dialup configuration"
+                echo  3
+                exit 3
+	fi
+
+	# usually, we test all interfaces
+	interfaces="$LOCAL_SNORT_INTERFACE"
+	# if we are requested to test a specific interface...
+	test "$2" && interfaces="$2"
+
+	myret=0
+	got_instance=0
+	for interface in $interfaces; do
+		got_instance=1
+		echo "interface $interface"
+
+		CONFIGFILE=/etc/snort/snort.$interface.conf
+		if [ ! -e "$CONFIGFILE" ]; then
+			CONFIGFILE=/etc/snort/snort.conf
+		fi
+		COMMON=`echo $COMMON | sed -e 's/-D//'`
+		set +e
+                fail="INVALID"
+		if [ -r "$CONFIGFILE" ]; then
+                    $DAEMON -T $COMMON $LOCAL_SNORT_OPTIONS \
+			-c $CONFIGFILE \
+			-S "HOME_NET=[$LOCAL_SNORT_HOME_NET]" \
+			-i $interface >/dev/null 2>&1
+                    ret=$?
+                else
+                    fail="cannot read $CONFIGFILE"
+                    ret=4
+                fi
+		set -e
+
+		case "$ret" in
+			0)
+                                echo "OK"
+				;;
+			*)
+                                echo "$fail"
+				myret=$(expr "$myret" + 1)
+				;;
+		esac
+	done
+	if [ "$got_instance" = 0 ]; then
+		echo "no snort instance found to be started!" >&2
+		exit 6
+	fi
+
+        if  [ $myret -eq 0 ] ; then
+            echo 0
+        else
+            echo 1
+        fi
+	exit $myret
+	;;
+  *)
+	echo "Usage: $0 {start|stop|restart|force-restart|reload|force-reload|status|config-check}"
+	exit 1
+	;;
+esac
+exit 0
diff --git a/recipes/snort/files/volatiles b/recipes/snort/files/volatiles
new file mode 100644
index 0000000000..e3ab51da38
--- /dev/null
+++ b/recipes/snort/files/volatiles
@@ -0,0 +1,2 @@
+# <type> <owner> <group> <mode> <path> <linksource>
+d snort snort 0755 /var/log/snort none
\ No newline at end of file