#!/bin/sh

uninstallMode=R
if [ -n "$1" ]; then
    uninstallMode=$1
fi

if [ "$2" = "force" ]; then
    dpkgForce="--force-all"
    rpmForce="--nodeps"
fi

PATH=/usr/bin:/usr/sbin:/bin:/sbin
umask 022

PF_FILE_PATH=/etc/opt/microsoft/scx/pf_file.sh

if [ ! -f $PF_FILE_PATH ]; then
    echo "Error: package file $PF_FILE_PATH does not exist. Unable to uninstall."
    exit 1
fi

. $PF_FILE_PATH

which dpkg 1> /dev/null 2> /dev/null
DPKG_EXISTS=$?

cleanup_and_exit()
{
    if [ "$PLATFORM" = "SunOS" ]; then
        rm -f scx-admin scx-admin-upgrade
    rm -f /tmp/.ai.pkg.zone.lock*
    fi
    if [ -n "$1" ]; then
        exit $1
    else
        exit 0
    fi
}

# $1 - The package name of the package to be uninstalled
# $2 - Optional parameter. Only used when forcibly removing omi on SunOS
pkg_rm() {
    echo "----- Removing package: $1 -----"
    case "$PF" in
        Linux)
            case "$PF_DISTRO" in
                ULINUX)
                    if [ "$DPKG_EXISTS" -eq 0 ]; then
                        if [ "$uninstallMode" = "P" ]; then
                            dpkg --purge $1 # 1> /dev/null 2> /dev/null
                        else
                            dpkg --remove $dpkgForce $1 # 1> /dev/null 2> /dev/null
                        fi
                    else
                        rpm --erase $rpmForce $1 # 1> /dev/null 2> /dev/null
                    fi
                    ;;
		
                REDHAT|SUSE)
                    rpm --erase $rpmForce $1 # 1> /dev/null 2> /dev/null
                    ;;

                UBUNTU)
                    if [ "$uninstallMode" = "P" ]; then
                        dpkg --purge $1 # 1> /dev/null 2> /dev/null
                    else
                        dpkg --remove $dpkgForce $1 # 1> /dev/null 2> /dev/null
                    fi
                    ;;

                *)
                    echo "Unsupported Linux platform: $PF_DISTRO"
                    ;;
            esac
            ;;

        AIX)
            /usr/sbin/installp -u $1.rte # 1> /dev/null 2> /dev/null
            ;;
        
        HPUX)
            /usr/sbin/swremove $1 # 1> /dev/null 2> /dev/null
            ;;
        
        SunOS)
            /usr/sbin/pkgrm -a scx-admin -n MSFT$1 # 1> /dev/null 2> /dev/null
            ;;

        *)
            echo "Unsupported platform: $PF"
            ;;
    esac
}

service_action_delay()
{
    case "$PF_MINOR" in
        10|11)
            COUNT=0
            while [ $COUNT -lt 15 ]; do
                /usr/bin/svcs -H $1 2> /dev/null | grep -i $2 2> /dev/null 1> /dev/null
                [ $? -eq 0 ] && break
                echo "Waiting for service: $1 ..."
                sleep 2
                COUNT=`expr $COUNT + 1`
            done
        ;;

    esac
}


stop_omiserver() {
    if [ -f /opt/omi/bin/service_control ]; then
        /opt/omi/bin/service_control stop
        return $?
    fi
    if [ -f /var/opt/omi/run/omiserver.pid ]; then
        case "$PF" in
            AIX)
                stopsrc -s omiserverd
                ;;
            
            Linux)
                case "$PF_DISTRO" in
                    UBUNTU|ULINUX)
                        if [ -x /usr/sbin/invoke-rc.d ]; then
                            invoke-rc.d omiserverd stop
                        elif [ -x /sbin/service ]; then
                            service omiserverd stop
                        else
                            echo "Unrecognized Service Controller to stop OMI Service."
                            cleanup_and_exit 1
                        fi
                        ;;
                    SUSE)
                        case "$PF_MAJOR" in
                            9)
                                /etc/init.d/omiserverd stop
                                ;;
                            *)
                                service omiserverd stop
                                ;;
                        esac
                        ;;
                    REDHAT)
                        service omiserverd stop
                        ;;
                esac
                ;;
            
            HPUX)
                $OMI_HOME/bin/omiserver -s
                ;;
            
            SunOS)
                case "$PF_MINOR" in
                    9)
                        $OMI_HOME/bin/omiserver -s
                        ;;
                    10|11)
                        svcs -l omiserverd 2> /dev/null 1> /dev/null
                        if [ $? -eq 0 ]; then
                            svcadm disable -s svc:/application/management/omiserverd
                            service_action_delay svc:/application/management/omiserverd disabled
                        fi
                        ;;
                esac
                ;;
        esac
    fi
}


start_omiserver() {
    if [ -f /opt/omi/bin/service_control ]; then
        /opt/omi/bin/service_control start
        return $?
    fi
    case "$PF" in
        AIX)
            startsrc -s omiserverd -e "LD_LIBRARY_PATH=$OMI_HOME/lib"
            ;;
        
        Linux)
            case "$PF_DISTRO" in
                UBUNTU|ULINUX)
                    if [ -x /usr/sbin/invoke-rc.d ]; then
                        invoke-rc.d omiserverd start
                    elif [ -x /sbin/service ]; then
                        service omiserverd start
                    else
                        echo "Unrecognized Service Controller to start SCX Service"
                        cleanup_and_exit 1
                    fi
                    ;;
                SUSE)
                    case "$PF_MAJOR" in
                        9)
                            /etc/init.d/omiserverd start
                            ;;
                        *)
                            service omiserverd start
                            ;;
                    esac
                    ;;
                REDHAT)
                    service omiserverd start
                    ;;
            esac
            ;;

        HPUX)
            /opt/omi/bin/omiserver -d
            ;;
        
        SunOS)
            case "$PF_MINOR" in
                9)
                    /opt/omi/bin/omiserver -d
                    ;;
                10|11)
                    svcs -H omiserverd 2> /dev/null | grep -i online 2> /dev/null 1> /dev/null
                    if [ $? -eq 0 ]; then
                        return
                    fi
                    
                    service_action_delay svc:/application/management/omiserverd disabled
                    svcadm enable -s svc:/application/management/omiserverd
                    ;;
            esac
            ;;
    esac
}

# Create installation administrative file for Solaris platform if needed
if [ "$PF" = "SunOS" ]; then
    echo "mail=" > scx-admin
    echo "instance=overwrite" >> scx-admin
    echo "partial=nocheck" >> scx-admin
    echo "idepend=quit" >> scx-admin
    echo "rdepend=quit" >> scx-admin
    echo "conflict=nocheck" >> scx-admin
    echo "action=nocheck" >> scx-admin
    echo "basedir=default" >> scx-admin
fi

echo "Removing cross-platform agent(s) ..."

# First remove any bundled agents

BUNDLE_EXIT_STATUS="0"

for i in /opt/microsoft/*-cimprov; do
    PKG_NAME=`basename $i`
    if [ "$PKG_NAME" != "*-cimprov" ]; then
        pkg_rm ${PKG_NAME}
        TEMP_STATUS=$?
        [ $TEMP_STATUS -ne 0 ] && BUNDLE_EXIT_STATUS="$TEMP_STATUS"
    fi
done

# Now remove actual SCX/OMI agents

pkg_rm scx
SCX_EXIT_STATUS=$?

pkg_rm omi
OMI_EXIT_STATUS=$?

if [ $OMI_EXIT_STATUS -ne 0 ]; then
    # Unable to uninstall omi.  This is most likely due to another dependency on omi.  In this case, we should restart omi
    stop_omiserver
    start_omiserver
fi

if [ "$SCX_EXIT_STATUS" -ne "0" -o "$BUNDLE_EXIT_STATUS" -ne "0" ]; then
    cleanup_and_exit 1
else
    cleanup_and_exit 0
fi