#!/usr/bin/env sh

# Simple script to run graphical programme as a separate user

mkmkshrc () {
        cat >$1 <<'EOF' 
export LANGUAGE="en_ZA:en_GB:en"
export LOCALE="en_ZA.UTF-8"
export PATH=$PATH:.
export HISTFILE=$HOME/.histfile
export HISTSIZE=8192
umask 077
set -o emacs
set -o utf8-mode
PS1='${ local e=$?; local r=""; (( $e )) && r="<$e>";
	local p=$(echo ${PWD:-?} | sed "s#$HOME#~#;s#.*/\(.*\)/\(.*\)#\1/\2#");
	local d=$(date +%H.%M.%S);
	echo -n "USERNAME:[$p]($d)$r> ";
	return $e }'
PS4='[$EPOCHREALTIME]' 
stty -ixon
alias rm='rm -i'
alias ls='ls --group-directories-first -vhF --color=always'
alias mg='/usr/bin/mg -n'
EOF
}

mkhandler() {
    cat >$1 <<'EOF'
#!/usr/bin/env sh
cd /home/USERNAME
cp /tmp/.Xauthority .
shred -v /tmp/.Xauthority 
export DISPLAY=:0
# Graphical programme code after this line
EOF
}

if [ "$1" == "-n" ]; then
    echo Creating skeleton files for new user $2 ...
    rm /tmp/skel -rf > /dev/null
    mkdir /tmp/skel
    mkmkshrc /tmp/skel/.mkshrc
    mkhandler /tmp/skel/$2
    sed -i "s/USERNAME/$2/" /tmp/skel/.mkshrc /tmp/skel/$2
    chmod 700 /tmp/skel/$2
    $EDITOR /tmp/skel/$2
    sudo useradd -m -G audio -s /usr/bin/mksh -k /tmp/skel $2
    sudo passwd $2
else
    cp .Xauthority /tmp
    chmod 606 /tmp/.Xauthority    
    su -l $1 -c /home/$1/$1    
    rm /tmp/.Xauthority
fi;