myvtm/addin/packaging/DEBIAN/postinst

#!/bin/sh
echo "============== post installation custom scripts start =============="
curr_timestamp=`date "+%Y%m%d-%H%M%S.%3N"`

sudo_priviledge() {

    given_user=$1
    given_sudoers_file=$2

    if [ -e ${given_sudoers_file}.tmp -o "$(pidof visudo)" ]; then
        echo "[ERROR]: ${given_sudoers_file} is working now,  wait a little and then try again later"
        return 2
    fi

    ret=0
	echo "[INFO]: to process editing sudoers file..."
    
    cp ${given_sudoers_file} ${given_sudoers_file}.tmp
	
    chmod 0640 ${given_sudoers_file}.tmp
    cat ${given_sudoers_file}.tmp | grep  'includedir /etc/sudoers.d' > /dev/null
    if [ $? = 0 ]; then
        echo "[INFO]: '#includedir /etc/sudoers.d' already exists in /etc/sudoers file"
    else
        echo "#includedir /etc/sudoers.d"  >> ${given_sudoers_file}.tmp
        ret=1
    fi

	if [  "`cat /etc/sudoers|grep ${given_user}|grep ALL=(ALL)`" != "" ]; then
        echo "[WARN]: sudoers file has been loaded up all(all) config"
    else
        new_entry="${given_user} ALL=(ALL) ALL"
        echo "${new_entry}" >> ${given_sudoers_file}.tmp
        ret=1
    fi

    if [  "`cat /etc/sudoers|grep ${given_user}|grep Run`" != "" ]; then
        echo "[WARN]: sudoers file has been loaded up rvc config"
    else
        new_entry="${given_user} ALL=(ALL) NOPASSWD: /opt/Run/version/*, NOPASSWD: /bin/sh, NOPASSWD: /bin/bash"
        echo "${new_entry}" >> ${given_sudoers_file}.tmp
        ret=1
    fi

    chmod 0440 ${given_sudoers_file}.tmp

    if visudo -c -f ${given_sudoers_file}.tmp ; then
        echo check syntax correct on ${given_sudoers_file}
    else
        echo "[ERROR]: syntax check failed on file ${given_sudoers_file}"
        rm ${given_sudoers_file}.tmp
        return 3
    fi

    if [ $ret -eq 1 ]; then
        echo "[SUCCESS]: config file has been change !!"
        cp ${given_sudoers_file} ${given_sudoers_file}.backup.${curr_timestamp}
        mv ${given_sudoers_file}.tmp ${given_sudoers_file}
    else
        echo "[WARN]: config file not change"
        rm ${given_sudoers_file}.tmp
    fi

    return $ret
}

res=0

if [ "$1" = "configure" ]; then

    rvc_user=$USER
    sudoers_file=/etc/sudoers

    if [ -z "$rvc_user" -o "$rvc_user" = "root" ]; then
        users=$(cat /etc/passwd | awk -F: '$3>=500' | cut -f 1 -d :)
        echo "user list: $users"
        cnt=0
        for var in $(echo ${users} | awk '{split($0,arr,",");for(i in arr) print arr[i]}')
        do
            if [ ${var} != 'nobody' -a ${var} != 'systemd-coredump' ]; then
                cnt=$((${cnt}+1))
                rvc_user=${var}
            fi
        done
        if [ $cnt -ne 1 ]; then
            echo "too many users: $cnt"
            rvc_user=''
        else
            echo "aim user: $rvc_user"
        fi
    fi

    if [ -z "$rvc_user" ]; then
        echo "[ERROR]: username is empty, please use cmd 'dpkg -i {.deb file} to install'"
        exit 1
    elif [ "$rvc_user" = "root" ]; then
        echo "[ERROR]: username is invalid, please use cmd 'dpkg -i {.deb file} to install'"
        exit 2
    fi

    echo "[INFO]: Going to add entry into /etc/sudoers file for user: $rvc_user"

    if [ ! -d '/etc/sudoers.d' ]; then
        mkidr /etc/sudoers.d
        chmod 750 /etc/sudoers.d
    fi

    sudo_priviledge ${rvc_user}   ${sudoers_file}
    res=$?
    if [ $res -eq 0 ]; then
        echo "[INFO]: Copy application icon to menu tools..."
        cp /opt/rvc/Resources/RVCTerminalApp.desktop /usr/share/applications
        echo "[INFO]: Active application icon autorun after boot..."
        cp /opt/rvc/Resources/RVCTerminalApp.desktop /etc/xdg/autostart/
        echo "[INFO]: Copy application icon to desktop..."
        cp /opt/rvc/Resources/RVCTerminalApp.desktop /home/$rvc_user/Desktop
    fi

fi

exit $res