Mini Shell

#!/usr/bin/bash

# RPM preun script
# Note: Also called from Debian pam-lve.prerm scriptlet
# Arguments:
# RPM
# "$1" == 0 -- RPM will uninstall package
# "$1" == 1 -- RPM upgrade/downgrade package
# DEB
# "$1" == "remove" - DEB will uninstall package
# "$1" == "upgrade" -- DEB will upgrade/downgrade package

# "pam-lve PRE UNINSTALL STARTED"

# RPM/DEB argument unified interpreter
argument=''
if [[ "$1" == 0 || "$1" == "remove" ]]; then
    # "$1" == 0 -- RPM will uninstall package
    # "$1" == "remove" - DEB will uninstall package
    argument='uninstall'
elif [[ "$1" == 1 || "$1" == "upgrade" ]]; then
    # "$1" == 1 -- RPM upgrade/downgrade package
    # "$1" == "upgrade" -- DEB
    argument='upgrade'
else
    # Unknown argument (some special cases only for DEB. See alt-python27-cllib.prerm scriptlet for details),
    # skip all actions
    exit 0
fi;


if [ "$argument" == 'uninstall' ]; then
    if [ -e "/etc/pam.d/sudo" ]; then
        sed -i '/pam_sulve.so/d' /etc/pam.d/sudo
    fi
    if [ -e "/etc/pam.d/sshd" ]; then
        sed -i '/pam_lve.so/d' /etc/pam.d/sshd
    fi
    if [ -e "/etc/pam.d/su" ]; then
        sed -i '/pam_lve.so/d' /etc/pam.d/su
        sed -i '/pam_sulve.so/d' /etc/pam.d/su
    fi

    # PAM config for cron
    pam_d_cron_file=''
    if [ -e "/etc/pam.d/crond" ]; then
        # Cloudlinux
        pam_d_cron_file='/etc/pam.d/crond'
    fi
    if [ -e "/etc/pam.d/cron" ]; then
        # Ubuntu
        pam_d_cron_file='/etc/pam.d/cron'
    fi
    if [[ -n "$pam_d_cron_file" && -e "$pam_d_cron_file" ]]; then
        sed -i '/pam_lve.so/d' "$pam_d_cron_file"
    fi
fi

# "pam-lve PRE UNINSTALL FINISHED"
exit 0