#!/bin/sh

#################################################################################
#
#   Lynis
# ------------------
#
# Copyright 2007-2012, Michael Boelen (michael@rootkit.nl), The Netherlands
# Web site: http://www.rootkit.nl
#
# This software is licensed under GPL, version 3. See LICENSE file for
# usage of this software.
#
#################################################################################
#
# Operating System detection
#
#################################################################################
#

    # Check operating system
    case `uname` in

	# IBM AIX
	AIX)
	  OS="AIX"
	  OS_NAME="AIX"
	  OS_FULLNAME=`uname -s -r`
	  OS_VERSION=`uname -r`
	  CPU=`uname -p`
	  HARDWARE=`uname -M`
	  FIND_BINARIES="whereis -b"
	  SYSCTL_READKEY=""
	;;

	# Mac OS X
	Darwin)
	  OS="MacOS"
	  if [ -x /usr/bin/sw_vers ]; then
	      OS_NAME=`/usr/bin/sw_vers -productName`
	      OS_VERSION=`/usr/bin/sw_vers -productVersion`
	      OS_FULLNAME="${OS_NAME} ${OS_VERSION}"
	    else
	      # Fall back to pretty safe name
	      OS_NAME="Mac OS X"
	      OS_FULLNAME=`uname -s -r`
	      OS_VERSION=`uname -r`
	  fi  
	  HARDWARE=`uname -m`
	  HOMEDIRS="/Users"
	  FIND_BINARIES="whereis"
	  OS_KERNELVERSION=`uname -r`
	  SYSCTL_READKEY=""
	;;
	
	# FreeBSD
        FreeBSD)
	  OS="FreeBSD"
	  OS_NAME="FreeBSD"
          OS_FULLNAME=`uname -s -r`
	  OS_VERSION=`uname -r`
	  HARDWARE=`uname -m`
	  HOMEDIRS="/home /root"
	  FIND_BINARIES="whereis -q -a -b"
	  OS_KERNELVERSION=`uname -i`
	  SYSCTL_READKEY="sysctl -n"
        ;;

	# HP-UX
	HP-UX)
	  OS="HP-UX"
	  OS_NAME="HP-UX"
	  OS_FULLNAME=`uname -s -r`
	  OS_VERSION=`uname -r`
	  HARDWARE=`uname -m`
	  FIND_BINARIES="whereis -b"
	  SYSCTL_READKEY=""
	;;
	    
	# Linux
	Linux)
	  OS="Linux"
	  OS_NAME="Linux"
          OS_FULLNAME=""
	  OS_VERSION=`uname -r`
	  LINUX_VERSION=""
	  HARDWARE=`uname -m`
	  HOMEDIRS="/home"
	  FIND_BINARIES="whereis -b"
	  OS_KERNELVERSION=`uname -r`
	  # Cobalt
	  if [ -e "/etc/cobalt-release" ]; then		OS_FULLNAME=`cat /etc/cobalt-release`; fi
	  # CPUBuilders Linux
	  if [ -e "/etc/cpub-release" ]; then		OS_FULLNAME=`cat /etc/cpub-release`; fi
	  # Debian/Ubuntu (***)
	  if [ -e "/etc/debian_version" -a -e /etc/lsb-release ]; then
	  	OS_VERSION=`cat /etc/debian_version`
		FIND=`grep "^DISTRIB_ID=" /etc/lsb-release | cut -d '=' -f2`
		if [ "${FIND}" = "Ubuntu" ]; then
		    OS_NAME="Ubuntu"
		    OS_VERSION=`grep "^DISTRIB_RELEASE=" /etc/lsb-release | cut -d '=' -f2`
		    OS_FULLNAME="Ubuntu ${OS_VERSION}"
		    LINUX_VERSION="Ubuntu"
		  else
		    OS_NAME="Debian"
		    OS_FULLNAME="Debian ${OS_VERSION}"
		    LINUX_VERSION="Debian"
		fi
		# Ubuntu test (optional) `cat /proc/version | grep "[Uu]buntu"`
	  fi
	  # E-smith
	  if [ -e "/etc/e-smith-release" ]; then	OS_FULLNAME=`cat /etc/e-smith-release`; fi
	  # Gentoo
	  if [ -e "/etc/gentoo-release" ]; then		OS_FULLNAME=`cat /etc/gentoo-release | awk '{ print $5 }' | cut -d '.' -f1,2`; fi
	  # Red Hat and others
	  if [ -e "/etc/redhat-release" ]; then
		# CentOS
	  	FIND=`grep "CentOS" /etc/redhat-release`
		if [ ! "${FIND}" = "" ]; then
			OS_NAME="CentOS"
			OS_FULLNAME=`cat /etc/redhat-release | grep "CentOS"`
			LINUX_VERSION="CentOS"
			OS_VERSION="${OS_FULLNAME}"
		fi
		# Fedora
	  	FIND=`grep "Fedora" /etc/redhat-release`
		if [ ! "${FIND}" = "" ]; then
			OS_NAME="Fedora"
			OS_FULLNAME=`cat /etc/redhat-release | grep "Fedora"`
			OS_VERSION="${OS_FULLNAME}"
			LINUX_VERSION="Fedora"
		fi
		# Oracle Enterprise Linux
	  	FIND=`grep "Enterprise Linux Enterprise Linux Server" /etc/redhat-release`
		if [ ! "${FIND}" = "" ]; then		OS_NAME="Oracle Enterprise Linux";	OS_FULLNAME=`cat /etc/redhat-release | grep "Enterprise Linux"`;	OS_VERSION="${OS_FULLNAME}"; fi
		
		# Red Hat
	  	FIND=`grep "Red Hat" /etc/redhat-release`
		if [ ! "${FIND}" = "" ]; then
			OS_NAME="Red Hat"
			OS_FULLNAME=`cat /etc/redhat-release | grep "Red Hat"`
			OS_VERSION="${OS_FULLNAME}"
			LINUX_VERSION="Red Hat"
		fi	
	  fi
	  if [ -e "/etc/SLOX-release" ]; then		OS_FULLNAME=`cat /etc/SLOX-release | grep "SuSE Linux"`; fi
	  
	  # Slackware
	  if [ -e "/etc/slackware-version" ]; then	OS_NAME="Slackware";	OS_FULLNAME=`cat /etc/slackware-version`;		LINUX_VERSION="Slackware"; fi
	  
	  # SuSE
	  if [ -e "/etc/SuSE-release" ]; then		OS_NAME="SuSE";		OS_VERSION=`cat /etc/SuSE-release | head -n 1`; 	LINUX_VERSION="SuSE"; fi
	  
	  # Turbo Linux
	  if [ -e "/etc/turbolinux-release" ]; then	OS_FULLNAME=`cat /etc/turbolinux-release`; fi
	  # YellowDog
	  if [ -e "/etc/yellowdog-release" ]; then	OS_FULLNAME=`cat /etc/yellowdog-release`; fi

	  # If Linux version is unknown, use uname value	  
	  if [ "${OS_FULLNAME}" = "" ]; then OS_FULLNAME=`uname -s -r`; fi
	  SYSCTL_READKEY="sysctl -n"

	;;

	# NetBSD
	NetBSD)
	  OS="NetBSD"
	  OS_NAME="NetBSD"
	  OS_FULLNAME=`uname -s -r`
	  OS_KERNELVERSION=`uname -v`
	  OS_VERSION=`uname -r`
	  HARDWARE=`uname -m`
	  FIND_BINARIES="whereis"
	  SYSCTL_READKEY=""
	;;

	# OpenBSD
	OpenBSD)
	  OS="OpenBSD"
	  OS_NAME="OpenBSD"
	  OS_FULLNAME=`uname -s -r`
	  OS_KERNELVERSION=`uname -v`
	  OS_VERSION=`uname -r`
	  HARDWARE=`uname -m`
	  FIND_BINARIES="whereis"
	  SYSCTL_READKEY=""

	;;

	# Solaris / OpenSolaris
	SunOS)
	  OS="Solaris"
	  OS_NAME="Sun Solaris"
	  OS_FULLNAME=`uname -s -r`
	  OS_VERSION=`uname -r`
	  HARDWARE=`uname -m`
	  if [ -x /usr/bin/isainfo ]; then
	      # Returns 32, 64
	      OS_MODE=`/usr/bin/isainfo -b`
	  fi
	  SYSCTL_READKEY=""
	;;
	
	# Unknown or unsupported systems
        *)
	  echo "[ ${WARNING}WARNING${NORMAL} ]"
          echo "${WARNING}Error${NORMAL}: ${WHITE}Unknown OS found. No support available for this OS or platform...${NORMAL}"
	  echo "Please consult the README/documentation for more information."
          exit 1
        ;;

    esac

    # Set correct echo binary and parameters after detecting operating system
    case ${OS} in
           "MacOS")                         ECHOCMD="echo" ;;
           "Solaris")                       ECHOCMD="echo" ;;
           "Linux")
              # Check if dash is used (Debian/Ubuntu)
              DEFAULT_SHELL=`ls -l /bin/sh | awk -F'>' '{print $2}'`
              case ${DEFAULT_SHELL} in
                " dash")                    ECHOCMD="/bin/echo -e" ;;
                *)                          ECHOCMD="echo -e" ;;
              esac
            ;;
           *)                               ECHOCMD="echo -e" ;;
    esac


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