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|
#!/bin/bash
#
# Writen by Vandoorselaere Yoann <yoann@mandrakesoft.com>
# Thanks to Francis Galiegue.
#
file="group"
group_line=""
new_group_line=""
group_name=$2
user_name=$3
Usage() {
echo "Usage :"
echo " --clean ---> Remove all group change."
echo " --refresh ---> Read group name in /etc/security/msec/group.conf"
echo " and add each user in /etc/security/msec/user.conf"
echo " in these groups ( if security level is <= 2 )"
}
ModifyFile() {
tmpfile=`mktemp /tmp/grpuser.XXXXXX`
cp /etc/${file} ${tmpfile}
head -$((group_line_number - 1)) ${tmpfile} > /etc/${file}
echo "${new_group_line}" >> /etc/${file}
tail +$((group_line_number + 1)) ${tmpfile} >> /etc/${file}
rm -f ${tmpfile}
}
RemoveUserFromGroup() {
new_group_line=${group}`echo ${group_users} |
sed -e s/,${user_name}$//g -e s/${user_name},//g -e s/${user_name}$//g`
}
AppendUserToGroup() {
if [[ -z ${group_users} ]]; then
new_group_line=${group_line}${user_name}
else
new_group_line=${group_line}",${user_name}"
fi
}
IsUserAlreadyInGroup() {
if echo ${group_users} | grep -qw "${user_name}"; then
return 0
fi
return 1
}
IsGroupExisting() {
group_line=""
group_line_number=""
# We get some group infos as well, will be used later
tmp=`grep -n "^${group_name}:" /etc/${file} | tr -d " "`
group_line_number=`echo ${tmp} | awk -F: '{print $1}'`
group=`echo ${tmp} | awk -F: '{print $2":"$3":"$4":"}'`
group_users=`echo ${tmp} | awk -F: '{print $5}'`
group_line=`echo ${tmp} | awk -F: '{print $2":"$3":"$4":"$5}'`
[ -z "${tmp}" ] && return 1
return 0
}
IsUserExisting() {
grep -qn "^${user_name}:" /etc/passwd
if [[ $? == 0 ]]; then
return 0;
fi
return 1;
}
RefreshAdd() {
if [[ ${SECURE_LEVEL} == 3 || ${SECURE_LEVEL} == 4 || ${SECURE_LEVEL} == 5 || ${SECURE_LEVEL} == snf ]]; then
echo "You are in a secure level > 2, in this level you need to add group user by yourself."
echo "Use the command : usermod -G group_name user_name"
exit 1;
fi
cat /etc/security/msec/group.conf | grep -v "^$" | while read group_name; do
IsGroupExisting;
if [[ $? != 0 ]]; then
echo "Group \"${group_name}\" doesn't exist. skiping it."
else
cat /etc/security/msec/user.conf | grep -v "^$" | while read user_name; do
IsUserExisting;
if [[ $? != 0 ]]; then
# user doesn't exist
echo "Can't add user \"${user_name}\" to group \"${group_name}\" user doesn't exist. skiping."
IsUserAlreadyInGroup;
if [[ $? == 0 ]]; then
#User doesn't exist but is in a group... delete user from this group.
IsGroupExisting;
RemoveUserFromGroup;
ModifyFile;
fi
else
echo "Adding user \"${user_name}\" to group \"${group_name}\"."
IsGroupExisting;
IsUserAlreadyInGroup;
if [[ $? == 1 ]]; then
AppendUserToGroup;
ModifyFile;
fi
fi
done
fi
done
}
RefreshDel() {
cat /etc/security/msec/group.conf | grep -v "^$" | while read group_name; do
IsGroupExisting;
if [[ $? != 0 ]]; then
echo "Group \"${group_name}\" doesn't exist. skiping it."
else
cat /etc/security/msec/user.conf | grep -v "^$" | while read user_name; do
IsGroupExisting; # We need some variable at each turn.
IsUserAlreadyInGroup;
if [[ $? == 0 ]]; then
echo "Removing \"${user_name}\" from group \"${group_name}\"."
RemoveUserFromGroup;
ModifyFile;
fi
done
fi
done
}
Perm() {
if [[ ${UID} != 0 ]]; then
echo "You need root access to use this tool."
echo "And this script shouldn't be used by users."
exit 1
fi
if [[ ! -w /etc/${file} ]]; then
echo "You're not allowed to write to /etc/group..."
exit 1
fi
if [[ ! -f /etc/security/msec/group.conf ]]; then
echo "/etc/security/msec/group.conf doesn't exist..."
exit 1
fi
if [[ ! -f /etc/security/msec/user.conf ]]; then
echo "/etc/security/msec/user.conf doesn't exist..."
exit 1
fi
}
if [[ $# == 1 ]]; then
case $1 in
"--refresh")
Perm;
RefreshAdd;
exit 0
;;
"--clean")
Perm;
RefreshDel;
exit 0
;;
esac
Usage;
exit 0
else
Usage;
fi
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