First commit of reworked installer

scripts/uninstall.sh

@@ -0,0 +1,117 @@
+#!/usr/bin/env bash
+# PiVPN: Uninstall Script
+
+# Must be root to uninstall
+if [[ $EUID -eq 0 ]];then
+    echo "::: You are root."
+else
+    echo "::: Sudo will be used for the uninstall."
+  # Check if it is actually installed
+  # If it isn't, exit because the unnstall cannot complete
+  if [[ $(dpkg-query -s sudo) ]];then
+        export SUDO="sudo"
+  else
+    echo "::: Please install sudo or run this as root."
+    exit 1
+  fi
+fi
+
+INSTALL_USER=$(cat /etc/pivpn/INSTALL_USER)
+
+# Find the rows and columns
+rows=$(tput lines)
+columns=$(tput cols)
+
+# Divide by two so the dialogs take up half of the screen, which looks nice.
+r=$(( rows / 2 ))
+c=$(( columns / 2 ))
+
+spinner()
+{
+    local pid=$1
+    local delay=0.50
+    local spinstr='/-\|'
+    while [ "$(ps a | awk '{print $1}' | grep "$pid")" ]; do
+        local temp=${spinstr#?}
+        printf " [%c]  " "$spinstr"
+        local spinstr=$temp${spinstr%"$temp"}
+        sleep $delay
+        printf "\b\b\b\b\b\b"
+    done
+    printf "    \b\b\b\b"
+}
+
+function removeAll {
+    # Purge dependencies
+echo ":::"
+    dependencies=( openvpn easy-rsa git iptables-persistent dnsutils )
+    for i in "${dependencies[@]}"; do
+        if [ "$(dpkg-query -W --showformat='${Status}\n' "$i" 2> /dev/null | grep -c "ok installed")" -eq 1 ]; then
+            while true; do
+                read -rp "::: Do you wish to remove $i from your system? [y/n]: " yn
+                case $yn in
+                    [Yy]* ) printf ":::\tRemoving %s..." "$i"; $SUDO apt-get -y remove --purge "$i" &> /dev/null & spinner $!; printf "done!\n"; 
+                            if [ "$i" == "openvpn" ]; then UINST_OVPN=1 ; fi
+                            break;;
+                    [Nn]* ) printf ":::\tSkipping %s" "$i\n"; break;;
+                    * ) printf "::: You must answer yes or no!\n";;
+                esac
+            done
+        else
+            printf ":::\tPackage %s not installed... Not removing.\n" "$i"
+        fi
+    done
+
+    # Take care of any additional package cleaning
+    printf "::: Auto removing remaining dependencies..."
+    $SUDO apt-get -y autoremove &> /dev/null & spinner $!; printf "done!\n";
+    printf "::: Auto cleaning remaining dependencies..."
+    $SUDO apt-get -y autoclean &> /dev/null & spinner $!; printf "done!\n";
+
+    echo ":::"
+    # Removing pivpn files
+    echo "::: Removing pivpn system files..."
+    $SUDO rm -rf /opt/pivpn &> /dev/null
+    $SUDO rm -rf /etc/.pivpn &> /dev/null
+    $SUDO rm -rf /etc/pivpn &> /dev/null
+    $SUDO rm -rf /home/$INSTALL_USER/ovpns &> /dev/null
+
+    $SUDO rm -rf /var/log/*pivpn* &> /dev/null
+    $SUDO rm -rf /var/log/*openvpn* &> /dev/null
+    if [[ $UINST_OVPN = 1 ]]; then
+        $SUDO rm -rf /etc/openvpn &> /dev/null
+    fi
+    $SUDO rm /usr/local/bin/pivpn &> /dev/null
+    $SUDO rm /etc/bash_completion.d/pivpn
+
+    # Disable IPv4 forwarding
+    sed -i '/net.ipv4.ip_forward=1/c\#net.ipv4.ip_forward=1' /etc/sysctl.conf
+    sysctl -p
+    
+    echo ":::"
+    printf "::: Finished removing PiVPN from your system.\n"
+    printf "::: Reinstall by simpling running\n:::\n:::\tcurl -L vigilcode.com/pivpnsetup | bash\n:::\n::: at any time!\n:::\n"
+}
+
+function askreboot() {
+    printf "It is \e[1mstrongly\e[0m recommended to reboot after un-installation.\n"
+    read -p "Would you like to reboot now (y/n)? " -n 1 -r
+    echo
+    if [[ $REPLY =~ ^[Yy]$ ]]; then
+        printf "\nRebooting system...\n"
+        sleep 3
+        shutdown -r now
+    fi
+}
+
+######### SCRIPT ###########
+echo "::: Preparing to remove packages, be sure that each may be safely removed depending on your operating system."
+echo "::: (SAFE TO REMOVE ALL ON RASPBIAN)"
+while true; do
+    read -rp "::: Do you wish to completely remove PiVPN configuration and installed packages from your system? (You will be prompted for each package) [y/n]: " yn
+    case $yn in
+        [Yy]* ) removeAll; askreboot; break;;
+    
+        [Nn]* ) printf "::: Not removing anything, exiting...\n"; break;;
+    esac
+done