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|
#
# Security level implementation...
# Writen by Vandoorselaere Yoann <yoann@mandrakesoft.com>
#
# Need root access
if [[ ${UID} != 0 ]]; then
echo "You need to be root in order to change secure level."
exit 1
fi
COMMENT="# Mandrake-Security : if you remove this comment, remove the next line too."
WaitAnswer() {
answer="nothing"
while [[ ${answer} != yes && ${answer} != no ]]; do
echo -n "yes/no : "
read answer
done
}
AddRules () {
string=$1
file=$2
quiet=$3
if [[ -z ${string} ]]; then
return;
fi
if [[ -z ${quiet} ]]; then
echo "Modifying config in ${file}..."
fi
if ! grep -Eqx "^${string}" ${file}; then
echo -e "${COMMENT}" >> ${file};
echo -e "${string}" >> ${file};
fi
if [[ -z ${3} ]]; then
echo -e "done.\n"
fi
}
AddBegRules() {
string=$1
file=$2
quiet=$3
ctrl=0
if [[ -z ${string} ]]; then
return;
fi
if [[ -z ${quiet} ]]; then
echo "Modifying config in ${file}..."
fi
mv ${file} /tmp/secure.tmp
if ! grep -Eqx "^${string}" /tmp/secure.tmp; then
echo -e "${COMMENT}" >> ${file};
echo -e "${string}" >> ${file};
fi
cat /tmp/secure.tmp >> ${file}
if [[ -z ${3} ]]; then
echo -e "done.\n"
fi
}
CleanRules() {
file=$1
ctrl=0
if [[ ! -f ${file} ]]; then
return;
fi
echo -en "\t- Cleaning msec appended line in ${file} : "
mv -f ${file} /tmp/secure.tmp
touch ${file}
while read line; do
if [[ ${ctrl} == 1 ]]; then
ctrl=0
continue;
fi
if echo "${line}" | grep -qx "${COMMENT}"; then
ctrl=1
fi
if [[ ${ctrl} == 0 ]]; then
echo "${line}" >> ${file}
fi
done < /tmp/secure.tmp
rm -f /tmp/secure.tmp
echo "done."
}
CommentUserRules() {
file=$1
if [[ ! -f ${file} ]]; then
return;
fi
echo -en "\t- Cleaning user appended line in ${file} : "
mv -f ${file} /tmp/secure.tmp
touch ${file}
while read line; do
if ! echo "${line}" | grep -qE "^#"; then
echo "# ${line}" >> ${file}
fi
done < /tmp/secure.tmp
rm -f /tmp/secure.tmp
echo "done."
}
Syslog() {
if [[ ${SYSLOG_WARN} == yes ]]; then
/sbin/initlog --string=${1}
fi
}
Ttylog() {
if [[ ${TTY_WARN} == yes ]]; then
w | grep -v "load\|TTY" | awk '{print $2}' | while read line; do
echo -e ${1} > /dev/$i
done
fi
}
LiloUpdate() {
if [[ ! -f /tmp/secure.DrakX ]]; then
echo "Do you want a password authentication at boot time ?"
echo "Be very carefull,"
echo "this will prevent your server to reboot without an operator to enter password".
WaitAnswer;
if [[ ${answer} == yes ]]; then
echo -n "Please enter the password which will be used at boot time : "
read password
else
password=""
fi
else
password=${DRAKX_PASSWORD}
fi
if [[ ! -z "${password}" ]]; then
mv /etc/lilo.conf /tmp/secure.tmp
while read line; do
if ! echo "${line}" | grep -q "password"; then
echo "${line}" >> /etc/lilo.conf
fi
done < /tmp/secure.tmp
rm -f /tmp/secure.tmp
clear
AddRules "password=$password" /etc/lilo.conf
fi
}
# If we are currently installing our
# system with DrakX, we don't ask anything to the user...
# Instead, DrakX do it and give us a file with some variable.
if [[ -f /tmp/secure.DrakX ]]; then
. /tmp/secure.DrakX
AddRules "${DRAKX_USERS}" /etc/security/msec/security.conf
fi
if [[ -f /etc/security/msec/security.conf ]]; then
. /etc/security/msec/security.conf
fi
clear
echo "Preparing to run security script : "
CleanRules /etc/syslog.conf
CleanRules /etc/hosts.deny
CommentUserRules /etc/hosts.deny
CleanRules /etc/hosts.allow
CommentUserRules /etc/hosts.allow
CleanRules /etc/securetty
CommentUserRules /etc/securetty
CleanRules /etc/security/msec/security.conf
CommentUserRules /etc/security/msec/security.conf
CleanRules /etc/profile
CleanRules /etc/lilo.conf
CleanRules /etc/rc.d/rc.firewall
CleanRules /etc/crontab
CleanRules /etc/security/msec/security.users
CleanRules /etc/X11/xdm/Xsession
CleanRules /etc/X11/xinit/xinitrc
echo -e "\nStarting to reconfigure the system : "
# For all secure level
echo "Setting spoofing protection : "
AddRules "echo 1 > /proc/sys/net/ipv4/conf/all/rp_filter" /etc/rc.d/rc.firewall
# default group which must exist on the system
groupadd nogroup >& /dev/null
groupadd audio >& /dev/null
groupadd xgrp >& /dev/null
usermod -G xgrp xfs
# We aren't at install time,
# so we delete ( temporarily ) audio user.
if [[ ! -f /tmp/secure.DrakX ]]; then
if [[ ! -z ${DRAKX_USERS} ]]; then
for user in ${DRAKX_USERS}; do
/etc/security/msec/init-sh/grpuser --del audio "${user}"
done
fi
else
if [[ ! -z ${DRAKX_USERS} ]]; then
AddRules "${DRAKX_USERS}" /etc/security/msec/security.conf
fi
fi
|
