/usr/lib/tiger/scripts/check_exports is in tiger 1:3.2.3-10.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
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#
# 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_exports - 06/14/93
#
# Check NFS exports file for:
#
# Anonymous ID = 0 and write access (fail)
# Anonymous ID = 0 and readonly access (warn)
# Exporting the root filesystem (warn)
# Exporting the root filesystem to "world" (fail)
# Exporting the root filesystem with "root" access (fail)
# Exporting a filesystem to "world" with write (fail)
# Exporting a filesystem to "world" (warn)
# Exporting a filesystem with "root" access, the host
# is a diskless client, but the path is "safe" (info)
# Exporting a filesystem with "root" access, the host
# is a diskless client, but the path is "unsafe" (warn)
# Exporting a filesystem with "root" access, the host
# is not a diskless client, and the path is "unsafe" (warn)
#
#-----------------------------------------------------------------------------
#
# 05/02/2004 jfs Try to avoid eval problems if handling variables with
# special characters (such as space)
# 08/14/2003 jfs Added OUTPUTMETHOD to dependancies
# 05/01/2003 jfs Fixed dependancies, added note.
# 05/30/99 ARC Fixed problems with IRIX and other false alarms
# 04/28/93 dls Add '-L' to 'ls' so we get the permissions from the file
# instead of a symbolic link.
#
#------------------------------------------------------------------------
#
TigerInstallDir="/usr/lib/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 AWK GEN_EXPORT_SETS SORT RM OUTPUTMETHOD || exit 1
haveallfiles BASEDIR WORKDIR || exit 1
haveallvars HOSTNAMESLIST || exit 1
echo "--CONFIG-- [init003c] $0: Configuration ok..."
exit 0
}
#------------------------------------------------------------------------
echo
echo "# Performing NFS exports check..."
haveallcmds GEN_EXPORT_SETS SED AWK RM OUTPUTMETHOD || exit 1
haveallfiles BASEDIR WORKDIR || exit 1
haveallvars HOSTNAMESLIST || exit 1
is_safe_path()
{
saveifs=$IFS
IFS=/
set $1
IFS=$saveifs
path=
open=1
for name
do
set `getpermit ${path}/$name` X
shift
shift
shift
[ -n "$9" ] &&
[ "$4" = 0 -a "$5" = 0 -a "$6" = 0 -a \
"$7" = 0 -a "$8" = 0 -a "$9" = 0 ] && { open=0; break; }
path=${path}/$name
done
return $open
}
check_entry()
{
dir=$1
shift
# Do not assume first a good setup
world=1
root=0
readonly=0
anonid=-1
readmost=0
roothosts=
# TODO: Does not recognise new /etc/exports format
# directory serverA (options) domainB (options)
# Needs to be rewritten or gen_exports modified
for acl
do
case $acl in
-access=*|access=*) world=0;;
-root=*|root=*) root=1;roothosts=`echo $acl|$AWK -F= '{print $2}'`;;
-ro=*|ro=*) readonly=1; world=0;;
-ro|ro) readonly=1;;
-anon=*|anon=*) anonid=`echo $acl | $AWK -F= '{print $2}'`;;
-rw=*|rw=*) readmost=1;world=0;;
-rw|rw) readmost=1;;
*) world=0;;
esac
done
[ "$anonid" = "0" -a "$readonly" = "0" ] &&
message FAIL nfs001f "" "Anonymous ID == 0, for R/W filesystem $dir"
[ "$anonid" = "0" -a "$readonly" = "1" ] &&
message WARN nfs002w "" "Anonymous ID == 0 for R/O filesystem $dir"
[ "$dir" = "/" ] &&
message WARN nfs003w "" "Exporting the root filesystem (/)."
[ "$dir" = '/usr' -a "$readonly" = '0' ] &&
message WARN nfs014w "" "Exporting the /usr filesystem R/W."
[ $world = 1 ] && {
if [ "$dir" = "/" ]; then
if [ "$readonly" = "0" -a "$readmost" = "0" ]; then
message FAIL nfs004f "" "Exporting the root filesystem (/) R/W to everyone."
else
message FAIL nfs005f "" "Exporting the root filesystem (/) R/O to everyone."
fi
else
if [ "$readonly" = "0" ]; then
message FAIL nfs006f "" "Directory $dir exported R/W to everyone."
else
message WARN nfs007w "" "Directory $dir exported R/O to everyone."
fi
fi
}
[ $root = 1 -a -d $dir ] && {
[ "$dir" = "/" ] && {
if [ "$readonly" = "1" ]; then
message FAIL nfs008f "" "Exporting the root filesystem (/) R/O with root access."
else
message FAIL nfs009f "" "Exporting the root filesystem (/) R/W with root access."
fi
}
IFS=:
set X $roothosts
IFS="$saveifs"
shift
dlclient=1
# roothost is a magic variable name... don't change it.
for roothost
do
eval "case \"$dir\" in $casediskless esac"
done
roothosts=`
echo $roothosts |
$SED -e 's/:/, /g' -e 's/,\([^,]*\)$/, and\1/'`
if [ $dlclient = 0 ]; then
if is_safe_path $dir ; then
message INFO nfs010i "" "Directory $dir is exported with root access to host(s) $roothosts."
else
message WARN nfs011w "" "Unprotected directory $dir is exported with root access to host(s) $roothosts."
fi
else
if is_safe_path $dir ; then
:
else
message WARN nfs012w "" "Unprotected directory $dir is exported with root access for diskless client $roothosts."
fi
fi
}
}
parse_bootparam()
{
$AWK '
BEGIN {LINE="";}
$0 ~ /\\$/ {printf("%s ", substr($0, 1, length($0)-1));}
$0 !~ /\\$/ {printf("%s\n", $0);}
END {printf("\n");}
' |
$AWK '{
for(i=2;i<=NF;i++)
if(substr($i, 1,5) == "root="){
x=substr($i, 6, length($i));
split(x, ar, ":");
print $1, ar[1], ar[2];
}
}'
}
casediskless='*) dlclient=0;;'
haveallcmds GEN_BOOTPARAM_SETS && {
casediskless=`
{
$GEN_BOOTPARAM_SETS |
while read bootparam_set
do
parse_bootparam < $bootparam_set
delete $bootparam_set $bootparam_set.src
done
} |
$SORT -u |
while read client server filesys
do
eval "case \"$server\" in
$HOSTNAMESLIST)
echo $filesys')
case \\$roothost in
'$client'*) ;;
*) dlclient=0;;
esac;;' ;;
esac"
done
echo '*) dlclient=0;;'
`
}
saveifs="$IFS"
$GEN_EXPORT_SETS |
while read export_set
do
$SED -e 's/#.*$//' $export_set |
$SED -e '/^[ \t]*$/d' |
$AWK '
BEGIN { LINE=""; }
/\\$/ { LINE=LINE " " substr($0,1,length($0)-1); }
!/\\$/ { print LINE $0; LINE="";}
END { if(LINE != "") print LINE; }
' |
$SED -e 's/,/ /g' |
while read dir acl
do
check_entry $dir $acl
done
delete $export_set $export_set.src
done |
$OUTPUTMETHOD
exit 0
|