#!/bin/sh
#
#     tiger - A UN*X security checking system
#     Copyright (C) 1993 Douglas Lee Schales, David K. Hess, David R. Safford
#
#    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.
#
#     Please see the file `COPYING' for the complete copyright notice.
#
# check_devices
# 	checks permissions on tape devices
# 10-30-2001
# Paul Telford <paul_telford@hp.com>
#
# 09/19/2003 jfs  Fixed error with patch submitted by Ryan Bradetich
# 08/12/2003 jfs  Fixed error (dirs->dir) and added a warning for 
#                 non-special files.
# 08/11/2003 jfs  Fixed dependancies.
# 04/15/2003 jfs  Fixed stupid error which made terminals appear 
#		  (/dev/ -> /dev)
# 08/12/2002 jfs  Added /devices/pseudo/pts to terminal lists.
# 08/09/2002 jfs  Fixed to work in Solaris (added pseudo devices and changed
#                 -L to -h)
# 07/25/2002 jfs  Changed TigerInstallDir to .
# 03/31/2005 jfs  Added EXPECTEDIRS and EXPECTEDDEVICES in /dev (Os specific)
#                 and added Solaris (9) devices
# 05/20/2006 jfs  Handle the special case of having " in filenames by quoting
#                 the character (Debian bug #355096)
# 06/21/2007 jfs  Extend the list of EXPECTEDDIRS for Linux to cover udev
# 12/08/2011 jfs  Extend the list of EXPECTEDDIRS to cover /dev/bsg 
#                 (Debian bug #616339)
#                 Do not test symbolic links if they point to regular files.
#                 (Debian bug #616337)
#                 Fix typos in names of variables when defined.
#
#-----------------------------------------------------------------------------
#
TigerInstallDir="/usr/share/tiger"

#
# Set default base directory.
# Order or preference:
#      -B option
#      TIGERHOMEDIR environment variable
#      TigerInstallDir installed location
#
basedir=${TIGERHOMEDIR:=$TigerInstallDir}

for parm
do
   case $parm in
   -B) basedir=$2; break;;
   esac
done
#
# Verify that a config file exists there, and if it does
# source it.
#
[ ! -r $basedir/config ] && {
  echo "--ERROR-- [init002e] No 'config' file in \`$basedir'."
  exit 1
}
. $basedir/config

. $BASEDIR/initdefs
#
# If run in test mode (-t) this will verify that all required
# elements are set.
#
[ "$Tiger_TESTMODE" = 'Y' ] && {
  haveallcmds LS AWK SED || exit 1
  haveallfiles BASEDIR WORKDIR || exit 1
  
  echo "--CONFIG-- [init003c] $0: Configuration ok..."
  exit 0
}
#------------------------------------------------------------------------

haveallcmds LS AWK SED || exit 1
haveallfiles BASEDIR WORKDIR || exit 1

check_dev_file()
{
	device=$1
	getpermit $device |
    	while read filename rowner rgroup rur ruw rux rgr rgw rgx ror row rox rsuid rsgid rstk
    	do
		if [ $ror -eq 1 -o $row -eq 1 -o $rox -eq 1 ]
		then
		case $device in
		/dev/st[0-9])
			message FAIL dev001f "" "$device has world permissions"
		;;
		*)
			message FAIL dev002f "" "$device has world permissions"
		;;
		esac
		fi
	done

}

echo
echo "# Checking device permissions..."

EXPECTEDFILES="/dev/none"
if [ "$OS" = "Linux" ] ; then
	EXPECTEDFILES="/dev/core|/dev/stdout"
fi
EXPECTEDDIRS="/dev/none"
if [ "$OS" = "SunOS" ] ; then
	EXPECTEDDIRS="/dev/cfg|/dev/cua|/dev/dsk|/dev/es|/dev/fd|/dev/md|/dev/printers|/dev/pts|/dev/rdsk|/dev/sad|/dev/swap|/dev/term"
fi
if [ "$OS" = "Linux" ] ; then
	EXPECTEDDIRS="/dev/mapper|/dev/net|/dev/shm|/dev/cciss|/dev/fd|/dev/ida|/dev/input|/dev/mapper|/dev/net|/dev/pts|/dev/rd|/dev/shm|/dev/usb|/dev/ataraid|/dev/bus|/dev/cdroms|/dev/discs|/dev/disk|/dev/dri|/dev/fb|/dev/floppy|/dev/i2c|/dev/loop|/dev/md|/dev/misc|/dev/ptal-printd|/dev/scsi|/dev/snd|/dev/sound|/dev/tts|/dev/vc|/dev/vcc|/dev/bsg"
fi

dirs="/dev"
# For Solaris but maintain compatibility with others
# (in Solaris /dev/ are symlinks to devices in /devices/pseudo)
[ -d /devices ] && dirs="$dirs /device"
[ -d /devices/pseudo ] && dirs="$dirs /devices/pseudo"
for dir in $dirs
do
for file in $dir/[a-z0-9]*
do

	[ ! -h "$file" ] && [ -f "$file" ] &&  {
	file=`echo $file | $SED -e 's/"/\\\"/g'`
    	eval "case \"$file\" in
		$EXPECTEDFILES)
		# Expected regular files in this directories
		;;
		*)
       		      message WARN dev003w \"\" \"File $file is a regular file in a device directory.\"
		;;
	esac"
	}

	[ -d "$file" ] && {
	eval "case \"$file\" in
		$EXPECTEDDIRS)
		# Expected directories
		;;
		*)
		message WARN dev003w \"\" \"The directory $file resides in a device directory.\"
		;;
	esac"
	}

    	case $file in
	/dev/pty*|/dev/tty*|/devices/pseudo/pts*)
	# Do not check for virtual terminals
	;;
	/dev/urandom|/dev/random|/dev/zero|/dev/full|/dev/null)
	# Same for some special devices
	;;
	/devices/pseudo/mm@0:null|/devices/pseudo/mm@0:zero|/devices/pseudo/random@0:random|/devices/pseudo/random@0:urandom)
	# And for some devices in Solaris
	;;
	*)
	# Do not check directories or symbolic links
		if [ ! -d "$file"  -a  ! -h "$file" ] 
		then
		   check_dev_file $file
		fi
	;;
	esac
done
done

exit 0
