#!/bin/bash
#
# Copyright © 2011–2015, Better Linux, Inc.
# Authors: Jerry James <jamesjer@betterlinux.com>
#          Sean Jenkins <sean@betterlinux.com>
#
# Un-installation script for Better Linux.

(

main()
{
    #since we make best effort to be backwards compatible, and later scripts 
    #should be at least as good, or better than the currently running one

    # This is somewhat brittle.  
    /bin/rpm -q betterlinux-cpanel >/dev/null 2>&1
    if [ $? -eq 0 ]; then    
       printline
        echo "You must first run the BetterLinux cPanel package uninstaller before removing BetterLinux." 
        exit 1
    fi

    if [ -e /proc/cgroup_io_throttle -o -e /proc/betterlinux/versions ]; then 
        printline
        echo "You must reboot into a non-BetterLinux kernel before uninstalling." 
        printline
        exit 1
    fi

    wd=`pwd`
    if [[ "$wd" =~ .*\/etc\/betterlinux.* ]]; then
        printline
        echo "Your current working directory is $wd.  Please cd out of betterlinux"
        echo "and run this by full path: /etc/betterlinux/bin/bl-uninstall"
    fi

    if [ -f /etc/abrt/gpg_keys ] ; then
        if [ `grep -i betterlinux /etc/abrt/gpg_keys` ] ; then
            printline
            echo "Removing Signing key from abrt configs."
            sed -i -e "/betterlinux/d" /etc/abrt/gpg_keys
        fi
    fi

    # the new way with consistent names - isnt' life nice
    echo "Removing BetterLinux rpms."
    for i in `rpm -q -a | grep  -i betterlinux`; do 
        rpm -e --nodeps $i > /dev/null 2>&1
    done

#belt and suspenders - make sure some important things were removed
    rm -rf /usr/lib64/cpud /usr/lib64/iothrottled 
    if [ -e /usr/local/cpanel/bin/manage_hooks ]; then
        /usr/local/cpanel/bin/manage_hooks del script /etc/betterlinux/cpanel/bl-cphooks >/dev/null 2&>1 
    fi


########################################################
#this block for uninstalling legacy beta code
    echo "Removing any Legacy BetterLinux rpms."
    rpm -e --nodeps bl-libcgroup >/dev/null 2>&1
    rpm -e --nodeps betterlinux-libcgroup >/dev/null 2>&1
    rpm -e --nodeps bl-iproute >/dev/null 2>&1
    rpm -e --nodeps betterlinux-iproute >/dev/null 2>&1
    rpm -e --nodeps betterlinux-core >/dev/null 2>&1
    rpm -e --nodeps betterlinux >/dev/null 2>&1
    rpm -e --nodeps blstat >/dev/null 2>&1
    rpm -e --nodeps betterlinux-blstat >/dev/null 2>&1
    rpm -e --nodeps betterlinux-myusertop >/dev/null 2>&1
    rpm -e --nodeps bl-myusertop >/dev/null 2>&1
    rpm -e --nodeps betterlinux >/dev/null 2>&1
    rpm -e --nodeps betterlinux-cpanel >/dev/null 2>&1


    #again, but with noscripts 
    rpm -e --nodeps --noscripts bl-libcgroup >/dev/null 2>&1
    rpm -e --nodeps --noscripts betterlinux-libcgroup >/dev/null 2>&1
    rpm -e --nodeps --noscripts bl-iproute >/dev/null 2>&1
    rpm -e --nodeps --noscripts betterlinux-iproute >/dev/null 2>&1
    rpm -e --nodeps --noscripts betterlinux-core >/dev/null 2>&1
    rpm -e --nodeps --noscripts betterlinux >/dev/null 2>&1
    rpm -e --nodeps --noscripts blstat >/dev/null 2>&1
    rpm -e --nodeps --noscripts betterlinux-blstat >/dev/null 2>&1
    rpm -e --nodeps --noscripts betterlinux-myusertop >/dev/null 2>&1
    rpm -e --nodeps --noscripts bl-myusertop >/dev/null 2>&1
    rpm -e --nodeps --noscripts betterlinux >/dev/null 2>&1
    rpm -e --nodeps --noscripts betterlinux-cpanel >/dev/null 2>&1

    #ancient kernel-devel
    for i in `rpm -q kernel-devel | grep -i bl0`; do
        rpm -e --nodeps $i > /dev/null 2>&1
    done
    #ancient kernels - heavy weight, but safer than rpm -e based on name-guessing
    yum -d1 -y remove kernel-betterlinux > /dev/null 2>&1
    printline
########################################################

    #since we nuke the repos, make yum forget any cached data about them
    yum -d1 clean expire-cache
    echo 'Removing Betterlinux repos.'
    rm -rf /opt/betterlinux
    rm -f /etc/yum.repos.d/betterlinux*
    printline
    echo "Installing/restoring default iproute and libcgroup."
    yum -d1 -y install iproute libcgroup
    printline
    echo 'Done.'
    echo "Installing/restoring default kernel-tools*, kernel-firmware, and kernel-headers."
    yum -d1 -y --disableexcludes=all install kernel-tools kernel-tools-libs kernel-tools-libs-devel kernel-firmware
    yum -d1 -y --disableexcludes=all downgrade kernel-headers
    printline
    echo 'Done.'
    exit
}

printline()
{
    echo "--------------------------------------------------------------------------------"
}

main "$@"

) 2>&1 | tee bl-uninstall.log