#!/bin/sh

#################################################################################
#
#   Lynis
# ------------------
#
# Copyright 2007-2009, Michael Boelen (michael@rootkit.nl), The Netherlands
# Web site: http://www.rootkit.nl
#
# Lynis comes with ABSOLUTELY NO WARRANTY. This is free software, and you are
# welcome to redistribute it under the terms of the GNU General Public License.
# See LICENSE file for usage of this software.
#
#################################################################################
#
# Kernel
#
#################################################################################
#
    InsertSection "Kernel Hardening"
#
#################################################################################
#
    # Test        : KRNL-6000
    # Description : Check sysctl parameters
    # Sysctl      : net.ipv4.icmp_ingore_bogus_error_responses (=1)
    if [ ! "${SYSCTL_READKEY}" = "" ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
    Register --test-no KRNL-6000 --preqs-met ${PREQS_MET} --weight L --network NO --description "Check sysctl key pairs in scan profile"
    if [ ${SKIPTEST} -eq 0 ]; then
        Display --indent 2 --text "- Comparing sysctl key pairs with scan profile..."
        FIND=`grep "^sysctl:" ${PROFILE} | sed 's/ /:space:/g'`
        for I in ${FIND}; do
            tFINDkey=`echo ${I} | awk -F: '{ print $2 }'`
            tFINDexpvalue=`echo ${I} | awk -F: '{ print $3 }'`
            tFINDhp=`echo ${I} | awk -F: '{ print $4 }' | grep "[0-9]"`
            tFINDdesc=`echo ${I} | awk -F: '{ print $5 }' | sed 's/:space:/ /g'`
                
            tFINDcurvalue=`${SYSCTL_READKEY} ${tFINDkey} 2> /dev/null`
            if [ ! "${tFINDcurvalue}" = "" ]; then
            
        	if [ "${tFINDexpvalue}" = "${tFINDcurvalue}" ]; then
        	    logtext "Result: sysctl key ${tFINDkey} contains equal expected and current value (${tFINDexpvalue})"
        	    Display --indent 6 --text "- ${tFINDkey} (${tFINDexpvalue})" --result OK --color GREEN
        	    AddHP ${tFINDhp} ${tFINDhp}
        	  else
        	    logtext "Result: sysctl key ${tFINDkey} has a different value than expected in scan profile. Expected=${tFINDexpvalue}, Real=${tFINDcurvalue}"
            	    Display --indent 6 --text "- ${tFINDkey} (${tFINDexpvalue})" --result DIFFERENT --color RED
            	    AddHP 0 ${tFINDhp}
    		fi  
    	      else
    	        logtext "Result: key ${tFINDkey} does not exist on this machine"
    	    fi
        done
    fi
#
#################################################################################
#

wait_for_keypress

#
#================================================================================
# Lynis - Copyright 2007-2009, Michael Boelen - www.rootkit.nl - The Netherlands
