On Mon, 2013-11-11 at 15:10 +0100, Dominick Grift wrote:
> > I wrote a simple bash script that creates SELinux confined admins.
> >
> > I didnt bother to add any sanity checking or call commands with paths or
> > anything like that.
> >
> > Was just playing:
>
> Theres a few bugs in this script though (needless to say) I should
> probably also add sepermit support
>
> Also the policy API's have some rough edges, but generally things seem
> to work
>
playing with it some more.
added (probably too many) checks
added sepermit stuff
tried to get rid of some hardcoding
it generates a setup and remove script
some of the script is really ugly and its also very slow, but o well..
just for fun
> #!/bin/bash --
>
> shopt -s -o nounset
>
> declare -rx SCRIPT=${0##*/}
>
> declare USER_PREFIX=""
> declare ROLE_PREFIX=""
> declare INTERFACE_PREFIX=""
>
> declare SU=""
> declare SUDO=""
> declare GUI=""
>
> umask 077
>
> for util in /bin/grep /bin/awk /bin/sort /bin/cat /bin/bash /bin/chmod /bin/rm \
> /usr/bin/seinfo /bin/cp /bin/chmod /bin/head;
> do
> if [ ! -x $util ] ; then
> printf "$SCRIPT:$LINENO: %s\n" "Utility '$util' is not executable" >&2
> exit 192
> fi
> done
>
> for util in /usr/sbin/semanage /usr/sbin/semodule /usr/sbin/useradd \
> /usr/sbin/userdel /bin/whoami;
> do
> if [ ! -f $util ] ; then
> printf "$SCRIPT:$LINENO: %s\n" "Utility '$util' is not available" >&2
> exit 192
> fi
> done
>
> if [ ! -c /dev/null ] ; then
> printf "$SCRIPT:$LINENO: %s\n" "Device '/dev/null' not found" >&2
> exit 192
> fi
>
> if [ ! -w $PWD ] ; then
> printf "$SCRIPT:$LINENO: %s\n" "Current directory '$PWD' is not writable" >&2
> exit 192
> fi
>
> interface_prefixes() {
> /bin/grep -r "_admin',\`" /usr/share/selinux/devel/include/ | \
> /bin/awk -F "/" '{ print $8 }' | \
> /bin/awk -F "\`" '{ print $2 }' | \
> /bin/awk -F "_" '{ print $1 }' | /bin/sort
> }
>
> # Expects a single parameter: user_prefix
>
> user() {
> /bin/cat > $1.te << EOF
> policy_module($1, 1.0.0)
>
> userdom_restricted_user_template($1)
>
> EOF
> }
>
> # Expects a single parameter: user_prefix
>
> gui_user() {
> /bin/cat > $1.te << EOF
> policy_module($1, 1.0.0)
>
> userdom_unpriv_user_template($1)
>
> EOF
> }
>
> # Expects a single parameter: user_prefix
>
> sudo() {
> /bin/cat >> $1.te <<EOF
> optional_policy(\`
> sudo_role_template($1, ${1}_r, ${1}_t)
> ')
>
> EOF
> }
>
> # Expects single parameter: user_prefix
>
> su() {
> /bin/cat >> $1.te <<EOF
> optional_policy(\`
> su_role_template($1, ${1}_r, ${1}_t)
> ')
>
> optional_policy(\`
> seutil_run_newrole(${1}_t, ${1}_r)
> ')
>
> EOF
> }
>
> # Expects two parameters: user_prefix, role_prefix
>
> role() {
> /bin/cat >> $1.te << EOF
> userdom_base_user_template($2)
>
> allow ${1}_r ${2}_r;
>
> EOF
> }
>
> # Expects two parameters: user_prefix, role_prefix
>
> interface() {
> /bin/cat >> $1.te << EOF
> optional_policy(\`
> ${interface}_admin(${2}_t, ${2}_r)
> ')
>
> EOF
> }
>
> if [ $# -eq 0 ] ; then
> printf "%s\n" "Type --help for help."
> exit 192
> fi
>
> while [ $# -gt 0 ] ; do
> case "$1" in
> -h | --help)
> printf "%s\n" "$SCRIPT - Generate SELinux confined administrators"
> printf "%s\n" ""
> printf "%s\n" "-h | --help Display this help message"
> printf "%s\n" "-l | --list List service interface prefixes"
> printf "%s\n" "-r | --role [role_prefix] Role prefix"
> printf "%s\n" "-u | --user [user_prefix] User prefix"
> printf "%s\n" "-i | --interface [interface_prefix,(...)] Service interface prefix"
> printf "%s\n" ""
> printf "%s\n" "--su Enable SU for user"
> printf "%s\n" "--sudo Enable SUDO for user"
> printf "%s\n" "--gui User GUI support"
> printf "%s\n" ""
> printf "%s\n" "Examples:"
> printf "%s\n" ""
> printf "%s\n" "joe the apm administrator:"
> printf "%s\n" "$SCRIPT -u joe -r apmadm -i apm --sudo"
> printf "%s\n" ""
> printf "%s\n" "jane the lamp stack administrator:"
> printf "%s\n" "$SCRIPT -u jane -r lampadm -i apache,mysql,postfix --gui --su"
> exit 0
> ;;
> -l | --list )
>
> interface_prefixes
> exit 0
> ;;
> -r | --role ) shift
>
> if [ $# -eq 0 ] ; then
> printf "$SCRIPT:$LINENO: %s\n" "Role prefix is missing" >&2
> exit 192
> fi
>
> if [ $(/usr/bin/seinfo -r"${1}_r" 2>/dev/null) ] ; then
> printf "$SCRIPT:$LINENO: %s\n" "Role prefix '$1' is already taken" >&2
> exit 192
> fi
>
> if [ $(/usr/bin/seinfo -t"${1}_t" 2>/dev/null) ] ; then
> printf "$SCRIPT:$LINENO: %s\n" "Role prefix '$1' is already taken" >&2
> exit 192
> fi
>
> ROLE_PREFIX="$1"
> ;;
> -u | --user )
>
> shift
>
> if [ $# -eq 0 ] ; then
> printf "$SCRIPT:$LINENO: %s\n" "User prefix is missing" >&2
> exit 192
> fi
>
> if [ $(/usr/bin/seinfo -r"${1}_r" 2>/dev/null) ] ; then
> printf "$SCRIPT:$LINENO: %s\n" "User prefix '$1' is already taken" >&2
> exit 192
> fi
>
> if [ $(/usr/bin/seinfo -t"${1}_t" 2>/dev/null) ] ; then
> printf "$SCRIPT:$LINENO: %s\n" "User prefix '$1' is already taken" >&2
> exit 192
> fi
>
> USER_PREFIX="$1"
> ;;
> -i | --interface )
>
> shift
>
> if [ $# -eq 0 ] ; then
> printf "$SCRIPT:$LINENO: %s\n" "Interface prefix is missing" >&2
> exit 192
> fi
>
> INTERFACE_PREFIX="$1"
> ;;
> --su )
>
> SU=SU
> ;;
> --sudo )
>
> SUDO=SUDO
> ;;
> --gui )
>
> GUI=GUI
> ;;
> -* )
>
> printf "$SCRIPT:$LINENO: %s\n" "switch $1 not supported" >&2
> exit 192
> ;;
> * )
>
> printf "$SCRIPT:$LINENO: %s\n" "extra argument or missing switch" >&2
> exit 192
> ;;
> esac
> shift
> done
>
> if [ -z "$ROLE_PREFIX" ] ; then
> printf "%s\n" "Role prefix missing" >&2
> exit 192
> fi
>
> if [ -z "$USER_PREFIX" ] ; then
> printf "%s\n" "User prefix missing" >&2
> exit 192
> fi
>
> if [ -z "$INTERFACE_PREFIX" ] ; then
> printf "$SCRIPT:$LINENO: %s\n" "Interface prefix missing" >&2
> exit 192
> fi
>
> if [ ! -f /usr/share/selinux/devel/include/system/userdomain.if ] ; then
> printf "$SCRIPT:$LINENO: %s\n" "File '/usr/share/selinux/devel/include/system/userdomain.if' \
> not found" >&2
> exit 192
> elif [ $(/bin/grep userdom_restricted_user_template \
> /usr/share/selinux/devel/include/system/userdomain.if \
> | /bin/awk -F "\`" '{ print $2 }' | /bin/awk -F "\'" '{ print $1 }' 2>/dev/null) \
> != "userdom_restricted_user_template" ] ; then
> printf "$SCRIPT:$LINENO: %s\n" "Template 'userdom_restricted_user_template()' not found" >&2
> exit 192
> elif [ $(/bin/grep userdom_unpriv_user_template \
> /usr/share/selinux/devel/include/system/userdomain.if \
> | /bin/awk -F "\`" '{ print $2 }' | /bin/awk -F "\'" '{ print $1 }' 2>/dev/null) \
> != "userdom_unpriv_user_template" ] ; then
> printf "$SCRIPT:$LINENO: %s\n" "Template 'userdom_unpriv_user_template()' not found" >&2
> exit 192
> fi
>
> if [ ! -f /usr/share/selinux/devel/include/admin/sudo.if ] ; then
> printf "$SCRIPT:$LINENO: %s\n" "File '/usr/share/selinux/devel/include/admin/sudo.if' \
> not found" >&2
> exit 192
> elif [ $(/bin/grep sudo_role_template /usr/share/selinux/devel/include/admin/sudo.if \
> | /bin/awk -F "\`" '{ print $2 }' | /bin/awk -F "\'" '{ print $1 }' 2>/dev/null) \
> != "sudo_role_template" ] ; then
> printf "$SCRIPT:$LINENO: %s\n" "Template 'sudo_role_template()' not found" >&2
> exit 192
> fi
>
> if [ ! -f /usr/share/selinux/devel/include/admin/su.if ] ; then
> printf "$SCRIPT:$LINENO: %s\n" "File '/usr/share/selinux/devel/include/admin/su.if' \
> not found" >&2
> exit 192
> elif [ $(/bin/grep su_role_template /usr/share/selinux/devel/include/admin/su.if \
> | /bin/awk -F "\`" '{ print $2 }' | /bin/awk -F "\'" '{ print $1 }' 2>/dev/null) \
> != "su_role_template" ] ; then
> printf "$SCRIPT:$LINENO: %s\n" "Template 'su_role_template()' not found" >&2
> exit 192
> fi
>
> if [ ! -f /usr/share/selinux/devel/include/system/selinuxutil.if ] ; then
> printf "$SCRIPT:$LINENO: %s\n" "File \
> '/usr/share/selinux/devel/include/system/selinuxutil.if' not found" >&2
> exit 192
> elif [ $(/bin/grep seutil_run_newrole \
> /usr/share/selinux/devel/include/system/selinuxutil.if \
> | /bin/awk -F "\`" '{ print $2 }' | /bin/awk -F "\'" '{ print $1 }' 2>/dev/null) \
> != "seutil_run_newrole" ] ; then
> printf "$SCRIPT:$LINENO: %s\n" "Interface 'seutil_run_newrole()' not found" >&2
> exit 192
> fi
>
> if [ ! -f /usr/share/selinux/devel/include/support/misc_macros.spt ] ; then
> printf "$SCRIPT:$LINENO: %s\n" "File \
> '/usr/share/selinux/devel/include/support/misc_macros.spt' not found" >&2
> exit 192
> elif [ $(/bin/grep gen_user \
> /usr/share/selinux/devel/include/support/misc_macros.spt \
> | /bin/awk -F "\`" '{ print $2 }' | /bin/awk -F "\'" '{ print $1 }' 2>/dev/null) \
> != "gen_user" ] ; then
> printf "$SCRIPT:$LINENO: %s\n" "Interface 'gen_user()' not found" >&2
> exit 192
> fi
>
> if [ ! $(/usr/bin/seinfo -rsystem_r 2>/dev/null) ] ; then
> printf "$SCRIPT:$LINENO: %s\n" "Role 'system_r' not found" >&2
> exit 192
> fi
>
> if [ ! $(/usr/bin/seinfo -tlocal_login_t 2>/dev/null) ] ; then
> printf "$SCRIPT:$LINENO: %s\n" "Type 'local_login_t' not found" >&2
> exit 192
> fi
>
> if [ ! $(/usr/bin/seinfo -tsshd_t 2>/dev/null) ] ; then
> printf "$SCRIPT:$LINENO: %s\n" "Type 'sshd_t' not found" >&2
> exit 192
> fi
>
> if [ ! $(/usr/bin/seinfo -txdm_t 2>/dev/null) ] ; then
> printf "$SCRIPT:$LINENO: %s\n" "Type 'xdm_t' not found" >&2
> exit 192
> fi
>
> if [ -f "${USER_PREFIX}.te" ] ; then
> printf "%s\n" "Replacing '${USER_PREFIX}.te' source policy file" >&2
> fi
>
> if [ ! -z "$USER_PREFIX" -a "$GUI" == "GUI" ] ; then
> gui_user $USER_PREFIX
> elif [ ! -z "$USER_PREFIX" -a "$GUI" == "" ] ; then
> user $USER_PREFIX
> else
> printf "$SCRIPT:$LINENO: %s\n" "Unhandled exception" >&2
> exit 192;
> fi
>
> if [ "$SUDO" == "SUDO" ] ; then
> sudo $USER_PREFIX
> fi
>
> if [ "$SU" == "SU" ] ; then
> su $USER_PREFIX
> fi
>
> if [ ! -z "$ROLE_PREFIX" ] ; then
> role $USER_PREFIX $ROLE_PREFIX
> fi
>
> if [ ! -z "$INTERFACE_PREFIX" ] ; then
>
> INTERFACE_PREFIX=$(echo $INTERFACE_PREFIX | /bin/sed s/,/" "/)
>
> for interface in $INTERFACE_PREFIX; do
> interface_prefixes | /bin/grep $interface >/dev/null
>
> if [ "$?" != 0 ] ; then
> printf "$SCRIPT:$LINENO: %s\n" "Interface prefix '$interface' unavailable" >&2
> /bin/rm -f $USER_PREFIX.te
> exit 192
> fi
> done
> fi
>
> for interface in $INTERFACE_PREFIX; do
> interface $USER_PREFIX $ROLE_PREFIX
> done
>
> /bin/cat >> ${USER_PREFIX}.te <<EOF
> gen_user(${USER_PREFIX}_u, user, ${USER_PREFIX}_r ${ROLE_PREFIX}_r, s0, s0 - mls_systemhigh, mcs_allcats)
>
> EOF
>
> if [ ! -z "$USER_PREFIX" -a "$GUI" == "GUI" ] ; then
> if [ "$(/usr/bin/seinfo --sensitivity | /bin/head -n 1 | /bin/awk -F " " \
> '{ print $2 }')" == "0" ] ; then
> /bin/cat > ${USER_PREFIX}_u <<EOF
> ${USER_PREFIX}_r:${USER_PREFIX}_t ${USER_PREFIX}_r:${USER_PREFIX}_t
> system_r:local_login_t ${USER_PREFIX}_r:${USER_PREFIX}_t
> system_r:sshd_t ${USER_PREFIX}_r:${USER_PREFIX}_t
> system_r:xdm_t ${USER_PREFIX}_r:${USER_PREFIX}_t
> EOF
> else
> /bin/cat > ${USER_PREFIX}_u <<EOF
> ${USER_PREFIX}_r:${USER_PREFIX}_t:s0 ${USER_PREFIX}_r:${USER_PREFIX}_t:s0
> system_r:local_login_t:s0 ${USER_PREFIX}_r:${USER_PREFIX}_t:s0
> system_r:sshd_t:s0 ${USER_PREFIX}_r:${USER_PREFIX}_t:s0
> system_r:xdm_t:s0 ${USER_PREFIX}_r:${USER_PREFIX}_t:s0
> EOF
> fi
> elif [ ! -z "$USER_PREFIX" -a "$GUI" == "" ] ; then
> if [ "$(/usr/bin/seinfo --sensitivity | /bin/head -n 1 | /bin/awk -F " " \
> '{ print $2 }')" == "0" ] ; then
> /bin/cat > ${USER_PREFIX}_u <<EOF
> ${USER_PREFIX}_r:${USER_PREFIX}_t ${USER_PREFIX}_r:${USER_PREFIX}_t
> system_r:local_login_t ${USER_PREFIX}_r:${USER_PREFIX}_t
> system_r:sshd_t ${USER_PREFIX}_r:${USER_PREFIX}_t
> EOF
> else
> /bin/cat > ${USER_PREFIX}_u <<EOF
> ${USER_PREFIX}_r:${USER_PREFIX}_t:s0 ${USER_PREFIX}_r:${USER_PREFIX}_t:s0
> system_r:local_login_t:s0 ${USER_PREFIX}_r:${USER_PREFIX}_t:s0
> system_r:sshd_t:s0 ${USER_PREFIX}_r:${USER_PREFIX}_t:s0
> EOF
> fi
> else
> printf "$SCRIPT:$LINENO: %s\n" "Unhandled exception" >&2
> exit 192;
> fi
>
> if [ "$SUDO" == "SUDO" ] ; then
> if [ "$(/usr/bin/seinfo --sensitivity | /bin/head -n 1 | /bin/awk -F " " \
> '{ print $2 }')" == "0" ] ; then
> /bin/cat >> ${USER_PREFIX}_u <<EOF
> ${USER_PREFIX}_r:${USER_PREFIX}_sudo_t ${USER_PREFIX}_r:${USER_PREFIX}_t
> EOF
> else
> /bin/cat >> ${USER_PREFIX}_u <<EOF
> ${USER_PREFIX}_r:${USER_PREFIX}_sudo_t:s0 ${USER_PREFIX}_r:${USER_PREFIX}_t:s0
> EOF
> fi
> fi
>
> if [ "$SU" == "SU" ] ; then
> if [ "$(/usr/bin/seinfo --sensitivity | /bin/head -n 1 | /bin/awk -F " " \
> '{ print $2 }')" == "0" ] ; then
> /bin/cat >> ${USER_PREFIX}_u <<EOF
> ${USER_PREFIX}_r:${USER_PREFIX}_su_t ${USER_PREFIX}_r:${USER_PREFIX}_t
> EOF
> else
> /bin/cat >> ${USER_PREFIX}_u <<EOF
> ${USER_PREFIX}_r:${USER_PREFIX}_su_t:s0 ${USER_PREFIX}_r:${USER_PREFIX}_t:s0
> EOF
> fi
> fi
>
> if [ -f "${USER_PREFIX}_setup.sh" ] ; then
> printf "%s\n" "Replacing '${USER_PREFIX}_setup.sh' script" >&2
> fi
>
> /bin/cat > ${USER_PREFIX}_setup.sh <<EOF
> #!/bin/bash --
>
> shopt -s -o nounset
>
> declare -rx SCRIPT=\${0##*/}
>
> for util in /usr/sbin/semanage /usr/sbin/semodule /usr/sbin/useradd \
> /bin/bash /bin/grep /bin/cp /bin/chmod /bin/awk /bin/head;
> do
> if [ ! -x \$util ] ; then
> printf "\$SCRIPT:\$LINENO: %s\n" "Utility '\$util' is not executable" >&2
> exit 192
> fi
> done
>
> if [ ! -r /etc/selinux/config ] ; then
> printf "\$SCRIPT:\$LINENO: %s\n" "File '/etc/selinux/config' not readable" >&2
> exit 192
> fi
>
> if [ ! -f /usr/share/selinux/devel/Makefile ] ; then
> printf "\$SCRIPT:\$LINENO: %s\n" "File '/usr/share/selinux/devel/Makefile' not found" >&2
> exit 192
> fi
>
> if [ "\$(/usr/sbin/semodule -l | /bin/grep "$USER_PREFIX" | \
> awk -F " " '{ print \$1 }')" == "${USER_PREFIX}" ] ; then
> printf "\$SCRIPT:\$LINENO: %s\n" "Module with name '$USER_PREFIX' already exists" >&2
> exit 192
> fi
>
> if [ "\$(/usr/sbin/semodule -l | /bin/grep "${USER_PREFIX}" | \
> /bin/awk -F " " '{ print \$1 }' | /bin/grep ^$USER_PREFIX$ )" == "$USER_PREFIX" ] ; then
> printf "\$SCRIPT:\$LINENO: %s\n" "Module with name '$USER_PREFIX' already exists" >&2
> exit 192
> fi
>
> if [ ! -d /etc/selinux/"\$(/bin/grep ^SELINUXTYPE= /etc/selinux/config | \
> /bin/awk -F "=" '{ print \$2 }' | /bin/awk -F " " \
> '{ print \$1 }')"/contexts/users/ ] ; then
> printf "\$SCRIPT:\$LINENO: %s\n" "Directory '/etc/selinux/"\$(/bin/grep \
> ^SELINUXTYPE= /etc/selinux/config | /bin/awk -F "=" '{ print \$2 }' | \
> /bin/awk -F " " '{ print \$1 }')"/contexts/users/' not found" >&2
> exit 192
> elif [ ! -w /etc/selinux/"\$(/bin/grep ^SELINUXTYPE= /etc/selinux/config | \
> /bin/awk -F "=" '{ print \$2 }' | /bin/awk -F " " \
> '{ print \$1 }')"/contexts/users/ ] ; then
> printf "\$SCRIPT:\$LINENO: %s\n" "Directory '/etc/selinux/"\$(/bin/grep \
> ^SELINUXTYPE= /etc/selinux/config | /bin/awk -F "=" '{ print \$2 }' | \
> /bin/awk -F " " '{ print \$1 }')"/contexts/users/' is not writable" >&2
> exit 192
> fi
>
> if [ -f /etc/selinux/"\$(/bin/grep ^SELINUXTYPE= /etc/selinux/config | \
> /bin/awk -F "=" '{ print \$2 }' | /bin/awk -F " " \
> '{ print \$1 }')"/contexts/users/${USER_PREFIX}_u ] ; then
> printf "\$SCRIPT:\$LINENO: %s\n" "File \
> '/etc/selinux/"\$(/bin/grep ^SELINUXTYPE= /etc/selinux/config | \
> /bin/awk -F "=" '{ print \$2 }' | /bin/awk -F " " \
> '{ print \$1 }')"/contexts/users/${USER_PREFIX}_u' already exists" >&2
> exit 192
> fi
>
> if [ ! -r /etc/passwd ] ; then
> printf "\$SCRIPT:\$LINENO: %s\n" "File '/etc/passwd' not readable" >&2
> exit 192
> fi
>
> if [ "\$(/bin/grep "${USER_PREFIX}" /etc/passwd | \
> awk -F ":" '{ print \$1 }')" == "${USER_PREFIX}" ] ; then
> printf "\$SCRIPT:\$LINENO: %s\n" "User '${USER_PREFIX}' already exists" >&2
> exit 192
> fi
>
> if [ "\$(/usr/sbin/semanage login -l | /bin/grep "${USER_PREFIX}" | \
> /bin/awk -F " " '{ print \$1 }')" == "$USER_PREFIX" ] ; then
> printf "\$SCRIPT:\$LINENO: %s\n" "User '${USER_PREFIX}' is already associated" >&2
> exit 192
> elif [ "\$(/usr/sbin/semanage login -l | /bin/grep "${USER_PREFIX}" | \
> /bin/awk -F " " '{ print \$2 }')" == "${USER_PREFIX}_u" ] ; then
> printf "\$SCRIPT:\$LINENO: %s\n" "Identity '${USER_PREFIX}_u' already exists" >&2
> exit 192
> fi
>
> if [ ! -f /etc/security/sepermit.conf ] ; then
> printf "\$SCRIPT:\$LINENO: %s\n" "File '/etc/security/sepermit.conf' not found" >&2
> exit 192
> elif [ ! -w /etc/security/sepermit.conf ] ; then
> printf "\$SCRIPT:\$LINENO: %s\n" "User '/etc/security/sepermit.conf' is not writable" >&2
> exit 192
> fi
>
> printf "%s\n" "Compiling '${USER_PREFIX}.pp' from '${USER_PREFIX}.te'"
> make -f /usr/share/selinux/devel/Makefile ${USER_PREFIX}.pp
>
> printf "%s\n" "Installing '${USER_PREFIX}.pp'"
> /usr/sbin/semodule -i ${USER_PREFIX}.pp
>
> printf "%s\n" "Copying '${USER_PREFIX}_u' to '/etc/selinux/"\$(/bin/grep \
> ^SELINUXTYPE= /etc/selinux/config | /bin/awk -F "=" '{ print \$2 }' | \
> /bin/awk -F " " '{ print \$1 }')"/contexts/users/'"
> /bin/cp ${USER_PREFIX}_u /etc/selinux/"\$(/bin/grep \
> ^SELINUXTYPE= /etc/selinux/config | /bin/awk -F "=" '{ print \$2 }' | \
> /bin/awk -F " " '{ print \$1 }')"/contexts/users/
>
> printf "%s\n" "Adding a new user called '$USER_PREFIX'"
> /usr/sbin/useradd $USER_PREFIX
>
> printf "%s\n" "Do not forget to set a password for user '$USER_PREFIX' manually!"
>
> printf "%s\n" "Associating '$USER_PREFIX' with '${USER_PREFIX}_u'"
>
> if [ "\$(/usr/bin/seinfo --sensitivity | /bin/head -n 1 | /bin/awk -F " " '{ print \$2 }')" \
> == "0" ] ; then
> /usr/sbin/semanage login -a -s ${USER_PREFIX}_u $USER_PREFIX
> else
> /usr/sbin/semanage login -a -s ${USER_PREFIX}_u -r s0 $USER_PREFIX
> fi
>
> printf "%s\n" "Appending '$USER_PREFIX' to '/etc/security/sepermit.conf'"
> printf "%s\n" "$USER_PREFIX" >> /etc/security/sepermit.conf
>
> EOF
>
> if [ "$SUDO" == "SUDO" ] ; then
> /bin/cat >> ${USER_PREFIX}_setup.sh <<EOF
> if [ ! -d /etc/sudoers.d/ ] ; then
> printf "\$SCRIPT:\$LINENO: %s\n" "Directory '/etc/sudoers.d' not found" >&2
> exit 192
> elif [ ! -w /etc/sudoers.d/ ] ; then
> printf "\$SCRIPT:\$LINENO: %s\n" "Directory '/etc/sudoers.d' is not writable" >&2
> exit 192
> elif [ -f /etc/sudoers.d/${USER_PREFIX} ] ; then
> printf "\$SCRIPT:\$LINENO: %s\n" "File '/etc/sudoers.d/${USER_PREFIX}' already exists" >&2
> exit 192
> fi
>
> printf "%s\n" "Setting up sudo for '$USER_PREFIX'"
> printf "%s\n" "$USER_PREFIX \${HOSTNAME}=(root) ALL" > /etc/sudoers.d/$USER_PREFIX
> /bin/chmod 0440 /etc/sudoers.d/$USER_PREFIX
>
> #EOF
> EOF
> fi
>
> /bin/chmod +x ${USER_PREFIX}_setup.sh
>
> if [ -f "${USER_PREFIX}_remove.sh" ] ; then
> printf "%s\n" "Replacing '${USER_PREFIX}_remove.sh' script" >&2
> fi
>
> /bin/cat > ${USER_PREFIX}_remove.sh <<EOF
> #!/bin/bash --
>
> shopt -s -o nounset
>
> declare -rx SCRIPT=\${0##*/}
>
> for util in /usr/sbin/semanage /usr/sbin/semodule /usr/sbin/userdel \
> /bin/rm /bin/bash /bin/grep /bin/awk /bin/sed;
> do
> if [ ! -x $util ] ; then
> printf "\$SCRIPT:\$LINENO: %s\n" "Utility '$util' is not executable" >&2
> exit 192
> fi
> done
>
> if [ "\$(/usr/sbin/semanage login -l | /bin/grep "${USER_PREFIX}" | \
> /bin/awk -F " " '{ print \$1 ":" \$2}')" != ""$USER_PREFIX":"${USER_PREFIX}_u"" ] ; then
> printf "\$SCRIPT:\$LINENO: %s\n" "Association '"${USER_PREFIX}":"${USER_PREFIX}_u"' \
> not found" >&2
> exit 192
> fi
>
> if [ "\$(/bin/grep "${USER_PREFIX}" /etc/passwd | \
> /bin/awk -F ":" '{ print \$1 }')" != "${USER_PREFIX}" ] ; then
> printf "\$SCRIPT:\$LINENO: %s\n" "User '${USER_PREFIX}' does not exist" >&2
> exit 192
> fi
>
> if [ "\$(/usr/sbin/semodule -l | /bin/grep "${USER_PREFIX}" | \
> /bin/awk -F " " '{ print \$1 }' | /bin/grep ^$USER_PREFIX$ )" != "$USER_PREFIX" ] ; then
> printf "\$SCRIPT:\$LINENO: %s\n" "Module with name '$USER_PREFIX' is not installed" >&2
> exit 192
> fi
>
> if [ ! -d /etc/selinux/"\$(/bin/grep ^SELINUXTYPE= /etc/selinux/config | \
> /bin/awk -F "=" '{ print \$2 }' | /bin/awk -F " " '{ print \$1 }')"/contexts/users/ ] ; then
> printf "\$SCRIPT:\$LINENO: %s\n" "Directory '/etc/selinux/"\$(/bin/grep \
> ^SELINUXTYPE= /etc/selinux/config | /bin/awk -F "=" \
> '{ print \$2 }' | /bin/awk -F " " '{ print \$1 }')"/contexts/users/' not found" >&2
> exit 192
> elif [ ! -w /etc/selinux/"\$(/bin/grep ^SELINUXTYPE= /etc/selinux/config | \
> /bin/awk -F "=" '{ print \$2 }' | /bin/awk -F " " '{ print \$1 }')"/contexts/users/ ] ; then
> printf "\$SCRIPT:\$LINENO: %s\n" "Directory '/etc/selinux/"\$(/bin/grep \
> ^SELINUXTYPE= /etc/selinux/config | /bin/awk -F "=" \
> '{ print \$2 }' | /bin/awk -F " " '{ print \$1 }')"/contexts/users/' is not writable" >&2
> exit 192
> fi
>
> if [ ! -f /etc/selinux/"\$(/bin/grep ^SELINUXTYPE= /etc/selinux/config | \
> /bin/awk -F "=" '{ print \$2 }' | /bin/awk -F " " '{ print \$1 }')"/contexts/users/${USER_PREFIX}_u ] ; then
> printf "\$SCRIPT:\$LINENO: %s\n" "File \
> '/etc/selinux/"\$(/bin/grep ^SELINUXTYPE= /etc/selinux/config | \
> /bin/awk -F "=" '{ print \$2 }' | /bin/awk -F " " '{ print \$1 }')"/contexts/users/${USER_PREFIX}_u' does not \
> exist" >&2
> exit 192
> fi
>
> if [ ! -f /etc/security/sepermit.conf ] ; then
> printf "\$SCRIPT:\$LINENO: %s\n" "File '/etc/security/sepermit.conf' not found" >&2
> exit 192
> elif [ ! -w /etc/security/sepermit.conf ] ; then
> printf "\$SCRIPT:\$LINENO: %s\n" "User '/etc/security/sepermit.conf' is not writable" >&2
> exit 192
> fi
>
> printf "%s\n" "Removing association of '$USER_PREFIX' with '${USER_PREFIX}_u'"
>
> if [ "\$(/usr/bin/seinfo --sensitivity | /bin/head -n 1 | /bin/awk -F " " '{ print \$2 }')" \
> == "0" ] ; then
> /usr/sbin/semanage login -d -s ${USER_PREFIX}_u $USER_PREFIX
> else
> /usr/sbin/semanage login -d -s ${USER_PREFIX}_u -r s0 $USER_PREFIX
> fi
>
> printf "%s\n" "Removing a new user called '$USER_PREFIX'"
> /usr/sbin/userdel -r $USER_PREFIX
>
> printf "%s\n" "Uninstalling the '$USER_PREFIX' module"
> /usr/sbin/semodule -r $USER_PREFIX
>
> printf "%s\n" "Removing '/etc/selinux/"\$(/bin/grep ^SELINUXTYPE= \
> /etc/selinux/config | /bin/awk -F "=" '{ print \$2 }' | /bin/awk -F " " \
> '{ print \$1 }')"/contexts/users/${USER_PREFIX}_u'"
> /bin/rm -f /etc/selinux/"\$(/bin/grep ^SELINUXTYPE= /etc/selinux/config | \
> /bin/awk -F "=" '{ print \$2 }' | /bin/awk -F " " \
> '{ print \$1 }')"/contexts/users/${USER_PREFIX}_u
>
>
> printf "%s\n" "Removing '${USER_PREFIX}' from '/etc/security/sepermit.conf'"
>
> if [ "\$(/bin/grep ^"$USER_PREFIX" /etc/security/sepermit.conf)" == "$USER_PREFIX" ] ; then
> /bin/sed -i "/^${USER_PREFIX}$/d" /etc/security/sepermit.conf
> fi
>
> EOF
>
> if [ "$SUDO" == "SUDO" ] ; then
> /bin/cat >> ${USER_PREFIX}_remove.sh <<EOF
> if [ ! -d /etc/sudoers.d/ ] ; then
> printf "\$SCRIPT:\$LINENO: %s\n" "Directory '/etc/sudoers.d' not found" >&2
> exit 192
> elif [ ! -w /etc/sudoers.d/ ] ; then
> printf "\$SCRIPT:\$LINENO: %s\n" "Directory '/etc/sudoers.d' is not writable" >&2
> exit 192
> elif [ ! -f /etc/sudoers.d/${USER_PREFIX} ] ; then
> printf "\$SCRIPT:\$LINENO: %s\n" "File '/etc/sudoers.d/${USER_PREFIX}' does not exist" >&2
> exit 192
> fi
>
> printf "%s\n" "Removing '/etc/sudoers.d/$USER_PREFIX'"
> /bin/rm -f /etc/sudoers.d/$USER_PREFIX
>
> #EOF
> EOF
> fi
>
> /bin/chmod +x ${USER_PREFIX}_remove.sh
>
> # TODO: sepermit support
>
> #EOF
--
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