integrated bitwarden password manager into pivpn

auto_install/install.sh

@@ -21,7 +21,7 @@ PKG_CACHE="/var/lib/apt/lists/"
 UPDATE_PKG_CACHE="${PKG_MANAGER} update"
 PKG_INSTALL="${PKG_MANAGER} --yes --no-install-recommends install"
 PKG_COUNT="${PKG_MANAGER} -s -o Debug::NoLocking=true upgrade | grep -c ^Inst || true"
-PIVPN_DEPS=(openvpn git tar wget grep iptables-persistent dnsutils expect whiptail net-tools)
+PIVPN_DEPS=(openvpn git tar wget grep iptables-persistent dnsutils expect whiptail net-tools grepcidr jq)
 ###          ###
 
 pivpnGitUrl="https://github.com/pivpn/pivpn.git"
@@ -29,7 +29,7 @@ pivpnFilesDir="/etc/.pivpn"
 easyrsaVer="3.0.6"
 easyrsaRel="https://github.com/OpenVPN/easy-rsa/releases/download/v${easyrsaVer}/EasyRSA-unix-v${easyrsaVer}.tgz"
 
-# Raspbian's unattended-upgrades package downloads Debian's config, so this is the link for the proper config 
+# Raspbian's unattended-upgrades package downloads Debian's config, so this is the link for the proper config
 UNATTUPG_RELEASE="1.9"
 UNATTUPG_CONFIG="https://github.com/mvo5/unattended-upgrades/archive/${UNATTUPG_RELEASE}.tar.gz"
 
@@ -92,18 +92,19 @@ distro_check() {
         source /etc/os-release
         PLAT=$(awk '{print $1}' <<< "$NAME")
         VER="$VERSION_ID"
-        declare -A VER_MAP=(["9"]="stretch" ["8"]="jessie" ["18.04"]="bionic" ["16.04"]="xenial" ["14.04"]="trusty")
+        declare -A VER_MAP=(["10"]="buster" ["9"]="stretch" ["8"]="jessie" ["18.04"]="bionic" ["16.04"]="xenial" ["14.04"]="trusty")
         OSCN=${VER_MAP["${VER}"]}
     fi
 
     if [[ ${OSCN} != "bionic" ]]; then
         PIVPN_DEPS+=(dhcpcd5)
+
     fi
 
     case ${PLAT} in
         Ubuntu|Raspbian|Debian|Devuan)
         case ${OSCN} in
-            trusty|xenial|jessie|stretch)
+            trusty|xenial|jessie|stretch|buster)
             ;;
             *)
             maybeOS_Support
@@ -474,11 +475,21 @@ notify_package_updates_available() {
   fi
 }
 
+install_bitwarden() {
+    # Install Bitwarden through NPM - this is the preferred installation method since NPM makes it easy to update the package
+    apt-get install -y nodejs npm
+    npm install -g @bitwarden/cli
+}
+
 install_dependent_packages() {
     # Install packages passed in via argument array
     # No spinner - conflicts with set -e
     declare -a argArray1=("${!1}")
 
+    if [[ ${OSCN} == "buster" ]]; then
+        $SUDO update-alternatives --set iptables /usr/sbin/iptables-legacy
+        $SUDO update-alternatives --set ip6tables /usr/sbin/ip6tables-legacy
+    fi
     echo iptables-persistent iptables-persistent/autosave_v4 boolean true | $SUDO debconf-set-selections
     echo iptables-persistent iptables-persistent/autosave_v6 boolean false | $SUDO debconf-set-selections
 
@@ -528,7 +539,7 @@ getGitFiles() {
     echo ":::"
     echo "::: Checking for existing base files..."
     if is_repo "${1}"; then
-        update_repo "${1}"
+        update_repo "${1}" "${2}"
     else
         make_repo "${1}" "${2}"
     fi
@@ -561,6 +572,9 @@ update_repo() {
         # Pull the latest commits
         echo -n ":::     Updating repo in $1..."
         $SUDO rm -rf "${1}"
+        # Go back to /etc otherwhise git will complain when the current working directory has
+        # just been deleted (/etc/.pivpn).
+        cd /etc
         $SUDO git clone -q --depth 1 --no-single-branch "${2}" "${1}" > /dev/null & spinner $!
         cd "${1}" || exit 1
         if [ -z "${TESTING+x}" ]; then
@@ -664,7 +678,7 @@ setClientDNS() {
           do
               strInvalid="Invalid"
 
-              if OVPNDNS=$(whiptail --backtitle "Specify Upstream DNS Provider(s)"  --inputbox "Enter your desired upstream DNS provider(s), seperated by a comma.\n\nFor example '8.8.8.8, 8.8.4.4'" ${r} ${c} "" 3>&1 1>&2 2>&3)
+              if OVPNDNS=$(whiptail --backtitle "Specify Upstream DNS Provider(s)"  --inputbox "Enter your desired upstream DNS provider(s), separated by a comma.\n\nFor example '8.8.8.8, 8.8.4.4'" ${r} ${c} "" 3>&1 1>&2 2>&3)
               then
                     OVPNDNS1=$(echo "$OVPNDNS" | sed 's/[, \t]\+/,/g' | awk -F, '{print$1}')
                     OVPNDNS2=$(echo "$OVPNDNS" | sed 's/[, \t]\+/,/g' | awk -F, '{print$2}')
@@ -749,11 +763,13 @@ confOpenVPN() {
     NEW_UUID=$(cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 16 | head -n 1)
     SERVER_NAME="server_${NEW_UUID}"
 
+    declare -A ECDSA_MAP=(["256"]="prime256v1" ["384"]="secp384r1" ["521"]="secp521r1")
+
     if [[ ${useUpdateVars} == false ]]; then
         # Ask user for desired level of encryption
 
         if [[ ${useUpdateVars} == false ]]; then
-            if [[ ${PLAT} == "Raspbian" ]] && [[ ${OSCN} != "stretch" ]]; then
+            if [[ ${PLAT} == "Raspbian" ]] && [[ ${OSCN} != "stretch" ]] && [[ ${OSCN} != "buster" ]]; then
                 APPLY_TWO_POINT_FOUR=false
             else
                 if (whiptail --backtitle "Setup OpenVPN" --title "Installation mode" --yesno "OpenVPN 2.4 brings support for stronger authentication and key exchange using Elliptic Curves, along with encrypted control channel.\n\nIf your clients do run OpenVPN 2.4 or later you can enable these features, otherwise choose 'No' for best compatibility.\n\nNOTE: Current mobile app, that is OpenVPN connect, is supported." ${r} ${c}); then
@@ -781,7 +797,7 @@ confOpenVPN() {
 
             declare -A ECDSA_MAP=(["256"]="prime256v1" ["384"]="secp384r1" ["521"]="secp521r1")
             ENCRYPT=$(whiptail --backtitle "Setup OpenVPN" --title "ECDSA certificate size" --radiolist \
-            "Choose the desired size of your certificate (press space to select):\n   This is an certificate that will be generated on your system.  The larger the certificate, the more time this will take.  For most applications, it is recommended to use 256 bits.  You can increase the number of bits if you care about, however, consider that 256 bits are already as secure as 3072 bit RSA." ${r} ${c} 3 \
+            "Choose the desired size of your certificate (press space to select):\n   This is a certificate that will be generated on your system.  The larger the certificate, the more time this will take.  For most applications, it is recommended to use 256 bits.  You can increase the number of bits if you care about, however, consider that 256 bits are already as secure as 3072 bit RSA." ${r} ${c} 3 \
             "256" "Use a 256-bit certificate (recommended level)" ON \
             "384" "Use a 384-bit certificate" OFF \
             "521" "Use a 521-bit certificate (paranoid level)" OFF 3>&1 1>&2 2>&3)
@@ -847,7 +863,7 @@ EOF
     fi
 
     # Build the server
-    ${SUDOE} ./easyrsa build-server-full ${SERVER_NAME} nopass
+    EASYRSA_CERT_EXPIRE=3650 ${SUDOE} ./easyrsa build-server-full ${SERVER_NAME} nopass
 
     if [[ ${useUpdateVars} == false ]]; then
       if [[ ${APPLY_TWO_POINT_FOUR} == false ]]; then
@@ -974,7 +990,43 @@ confNetwork() {
     # else configure iptables
     if [[ $noUFW -eq 1 ]]; then
         echo 1 > /tmp/noUFW
+
+        # Now some checks to detect which rules we need to add. On a newly installed system all policies
+        # should be ACCEPT, so the only required rule would be the MASQUERADE one.
+
         $SUDO iptables -t nat -I POSTROUTING -s 10.8.0.0/24 -o "$IPv4dev" -j MASQUERADE
+
+        # Count how many rules are in the INPUT and FORWARD chain. When parsing input from
+        # iptables -S, '^-P' skips the policies and 'ufw-' skips ufw chains (in case ufw was found
+        # installed but not enabled).
+
+        # Grep returns non 0 exit code where there are no matches, however that would make the script exit,
+        # for this reasons we use '|| true' to force exit code 0
+        INPUT_RULES_COUNT="$($SUDO iptables -S INPUT | grep -vcE '(^-P|ufw-)' || true)"
+        FORWARD_RULES_COUNT="$($SUDO iptables -S FORWARD | grep -vcE '(^-P|ufw-)' || true)"
+
+        INPUT_POLICY="$($SUDO iptables -S INPUT | grep '^-P' | awk '{print $3}')"
+        FORWARD_POLICY="$($SUDO iptables -S FORWARD | grep '^-P' | awk '{print $3}')"
+
+        # If rules count is not zero, we assume we need to explicitly allow traffic. Same conclusion if
+        # there are no rules and the policy is not ACCEPT. Note that rules are being added to the top of the
+        # chain (using -I).
+
+        if [ "$INPUT_RULES_COUNT" -ne 0 ] || [ "$INPUT_POLICY" != "ACCEPT" ]; then
+            $SUDO iptables -I INPUT 1 -i "$IPv4dev" -p "$PROTO" --dport "$PORT" -j ACCEPT
+            INPUT_CHAIN_EDITED=1
+        else
+            INPUT_CHAIN_EDITED=0
+        fi
+
+        if [ "$FORWARD_RULES_COUNT" -ne 0 ] || [ "$FORWARD_POLICY" != "ACCEPT" ]; then
+            $SUDO iptables -I FORWARD 1 -d 10.8.0.0/24 -i "$IPv4dev" -o tun0 -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
+            $SUDO iptables -I FORWARD 2 -s 10.8.0.0/24 -i tun0 -o "$IPv4dev" -j ACCEPT
+            FORWARD_CHAIN_EDITED=1
+        else
+            FORWARD_CHAIN_EDITED=0
+        fi
+
         case ${PLAT} in
             Ubuntu|Debian|Devuan)
                 $SUDO iptables-save | $SUDO tee /etc/iptables/rules.v4 > /dev/null
@@ -987,7 +1039,12 @@ confNetwork() {
         echo 0 > /tmp/noUFW
     fi
 
+    echo "$INPUT_CHAIN_EDITED" > /tmp/INPUT_CHAIN_EDITED
+    echo "$FORWARD_CHAIN_EDITED" > /tmp/FORWARD_CHAIN_EDITED
+
     $SUDO cp /tmp/noUFW /etc/pivpn/NO_UFW
+    $SUDO cp /tmp/INPUT_CHAIN_EDITED /etc/pivpn/INPUT_CHAIN_EDITED
+    $SUDO cp /tmp/FORWARD_CHAIN_EDITED /etc/pivpn/FORWARD_CHAIN_EDITED
 }
 
 confOVPN() {
@@ -1294,6 +1351,9 @@ main() {
     # Notify user of package availability
     notify_package_updates_available
 
+    # Install packages for Bitwarden
+    install_bitwarden
+
     # Install packages used by this installation script
     install_dependent_packages PIVPN_DEPS[@]
 
@@ -1374,7 +1434,7 @@ main() {
             $SUDO systemctl start openvpn.service
             ;;
     esac
-    
+
     # Ensure that cached writes reach persistent storage
     echo "::: Flushing writes to disk..."
     sync

pivpn

@@ -58,6 +58,7 @@ function helpFunc {
     echo ":::"
     echo "::: Commands:"
     echo ":::  -a, add [nopass]     Create a client ovpn profile, optional nopass"
+    echo ":::  -b,--bitwarden       Create and save a client through Bitwarden"
     echo ":::  -c, clients          List any connected clients to the server"
     echo ":::  -d, debug            Start a debugging session if having trouble"
     echo ":::  -l, list             List all valid and revoked certificates"
@@ -74,6 +75,7 @@ fi
 # Handle redirecting to specific functions based on arguments
 case "$1" in
 "-a" | "add"                ) makeOVPNFunc "$@";;
+"-b" | "bitwarden"          ) makeOVPNFunc "$@";;
 "-c" | "clients"            ) listClientsFunc;;
 "-d" | "debug"              ) debugFunc;;
 "-l" | "list"               ) listOVPNFunc;;

scripts/makeOVPN.sh

@@ -13,11 +13,12 @@ INSTALL_USER=$(cat /etc/pivpn/INSTALL_USER)
 helpFunc() {
     echo "::: Create a client ovpn profile, optional nopass"
     echo ":::"
-    echo "::: Usage: pivpn <-a|add> [-n|--name <arg>] [-p|--password <arg>]|[nopass] [-d|--days <number>] [-h|--help]"
+    echo "::: Usage: pivpn <-a|add> [-b|--bitwarden] [-n|--name <arg>] [-p|--password <arg>]|[nopass] [-d|--days <number>] [-h|--help]"
     echo ":::"
     echo "::: Commands:"
     echo ":::  [none]               Interactive mode"
     echo ":::  nopass               Create a client without a password"
+    echo ":::  -b,--bitwarden       Create and save a client through Bitwarden"
     echo ":::  -d,--days            Expire the certificate after specified number of days (default: 1080)"
     echo ":::  -n,--name            Name for the Client (default: '"$(hostname)"')"
     echo ":::  -p,--password        Password for the Client (no default)"
@@ -66,6 +67,9 @@ do
         nopass)
             NO_PASS="1"
             ;;
+        -b|--bitwarden)
+            BITWARDEN="2"
+            ;;
         *)
             echo "Error: Got an unexpected argument '$1'"
             helpFunc
@@ -91,6 +95,52 @@ EOF
 
 }
 
+function useBitwarden() {
+
+    # login and unlock vault
+    printf "****Bitwarden Login****"
+    printf "\n"
+    SESSION_KEY=`bw login --raw`
+    export BW_SESSION=$SESSION_KEY
+    printf "Successfully Logged in!"
+    printf "\n"
+
+    # ask user for username
+    printf "Enter the username:  "
+    read -r NAME
+
+    # check name
+    until [[ "$NAME" =~ ^[a-zA-Z0-9.@_-]+$ && ${NAME::1} != "." && ${NAME::1} != "-"  ]]
+    do
+      	echo "Name can only contain alphanumeric characters and these characters (.-@_). The name also cannot start with a dot (.) or a dash (-). Please try again."
+      	# ask user for username again
+      	printf "Enter the username: "
+      	read -r NAME
+    done
+
+
+    # ask user for length of password
+    printf "Please enter the length of characters you want your password to be (minimum 12): "
+    read -r LENGTH
+
+    # check length
+    until [[ "$LENGTH" -gt 11 && "$LENGTH" -lt 129 ]]
+    do
+      	echo "Password must be between from 12 to 128 characters, please try again."
+      	# ask user for length of password
+      	printf "Enter the length of characters you want your password to be (minimum 12): "
+      	read -r LENGTH
+    done
+
+    printf "Creating a PiVPN item for your vault..."
+    printf "\n"
+    # create a new item for your PiVPN Password
+    PASSWD=`bw generate -usln --length $LENGTH`
+    bw get template item | jq '.login.type = "1"'| jq '.name = "PiVPN"' | jq -r --arg NAME "$NAME" '.login.username = $NAME' | jq -r --arg PASSWD "$PASSWD" '.login.password = $PASSWD' |  bw encode | bw create item
+    bw logout
+
+}
+
 function keyPASS() {
 
     if [[ -z "${PASSWD}" ]]; then
@@ -137,6 +187,11 @@ EOF
 
 }
 
+# bitWarden first
+if [[ "${BITWARDEN}" =~ "2" ]]; then
+    useBitwarden
+fi
+
 if [ -z "${NAME}" ]; then
     printf "Enter a Name for the Client:  "
     read -r NAME
@@ -147,7 +202,7 @@ if [[ ${NAME::1} == "." ]] || [[ ${NAME::1} == "-" ]]; then
     exit 1
 fi
 
-if [[ "${NAME}" =~ [^a-zA-Z0-9\.\-\@\_] ]]; then
+if [[ "${NAME}" =~ [^a-zA-Z0-9.@_-] ]]; then
     echo "Name can only contain alphanumeric characters and these characters (.-@_)."
     exit 1
 fi

scripts/pivpnDebug.sh

@@ -13,8 +13,9 @@ echo -e "::::\t\t\e[4mLatest commit\e[0m\t\t ::::"
 git --git-dir /etc/.pivpn/.git log -n 1
 printf "=============================================\n"
 echo -e "::::\t    \e[4mInstallation settings\e[0m    \t ::::"
+# Use the wildcard so setupVars.conf.update.bak from the previous install is not shown
 for filename in /etc/pivpn/*; do
-    if [ "$filename" != "/etc/pivpn/setupVars.conf" ]; then
+    if [[ "$filename" != "/etc/pivpn/setupVars.conf"* ]]; then
         echo "$filename -> $(cat "$filename")"
     fi
 done
@@ -56,11 +57,39 @@ if [ "$(cat /etc/pivpn/NO_UFW)" -eq 1 ]; then
             iptables -t nat -F
             iptables -t nat -I POSTROUTING -s 10.8.0.0/24 -o "${IPv4dev}" -j MASQUERADE
             iptables-save > /etc/iptables/rules.v4
-            iptables-restore < /etc/iptables/rules.v4
             echo "Done"
         fi
     fi
 
+    if [ "$(cat /etc/pivpn/INPUT_CHAIN_EDITED)" -eq 1 ]; then
+        if iptables -C INPUT -i "$IPv4dev" -p "$PROTO" --dport "$PORT" -j ACCEPT &> /dev/null; then
+            echo ":: [OK] Iptables INPUT rule set"
+        else
+            ERR=1
+            read -r -p ":: [ERR] Iptables INPUT rule is not set, attempt fix now? [Y/n] " REPLY
+            if [[ ${REPLY} =~ ^[Yy]$ ]]; then
+                iptables -I INPUT 1 -i "$IPv4dev" -p "$PROTO" --dport "$PORT" -j ACCEPT
+                iptables-save > /etc/iptables/rules.v4
+                echo "Done"
+            fi
+        fi
+    fi
+
+    if [ "$(cat /etc/pivpn/FORWARD_CHAIN_EDITED)" -eq 1 ]; then
+        if iptables -C FORWARD -s 10.8.0.0/24 -i tun0 -o "$IPv4dev" -j ACCEPT &> /dev/null; then
+            echo ":: [OK] Iptables FORWARD rule set"
+        else
+            ERR=1
+            read -r -p ":: [ERR] Iptables FORWARD rule is not set, attempt fix now? [Y/n] " REPLY
+            if [[ ${REPLY} =~ ^[Yy]$ ]]; then
+                iptables -I FORWARD 1 -d 10.8.0.0/24 -i "$IPv4dev" -o tun0 -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
+                iptables -I FORWARD 2 -s 10.8.0.0/24 -i tun0 -o "$IPv4dev" -j ACCEPT
+                iptables-save > /etc/iptables/rules.v4
+                echo "Done"
+            fi
+        fi
+    fi
+
 else
 
     if LANG="en_US.UTF-8" ufw status | grep -qw 'active'; then
@@ -151,7 +180,17 @@ fi
 
 printf "=============================================\n"
 echo -e "::::      \e[4mSnippet of the server log\e[0m      ::::"
-tail -20 /var/log/openvpn.log
+tail -20 /var/log/openvpn.log > /tmp/snippet
+
+# Regular expession taken from https://superuser.com/a/202835, it will match invalid IPs
+# like 123.456.789.012 but it's fine because the log only contains valid ones.
+declare -a IPS_TO_HIDE=($(grepcidr -v 10.0.0.0/8,172.16.0.0/12,192.168.0.0/16 /tmp/snippet | grep -oE '[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}' | uniq))
+for IP in "${IPS_TO_HIDE[@]}"; do
+    sed -i "s/$IP/REDACTED/g" /tmp/snippet
+done
+
+cat /tmp/snippet
+rm /tmp/snippet
 printf "=============================================\n"
 echo -e "::::\t\t\e[4mDebug complete\e[0m\t\t ::::"
 

scripts/uninstall.sh

@@ -1,27 +1,14 @@
 #!/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)
 PLAT=$(cat /etc/pivpn/DET_PLATFORM)
 NO_UFW=$(cat /etc/pivpn/NO_UFW)
 PORT=$(cat /etc/pivpn/INSTALL_PORT)
 PROTO=$(cat /etc/pivpn/INSTALL_PROTO)
 IPv4dev="$(cat /etc/pivpn/pivpnINTERFACE)"
+INPUT_CHAIN_EDITED="$(cat /etc/pivpn/INPUT_CHAIN_EDITED)"
+FORWARD_CHAIN_EDITED="$(cat /etc/pivpn/FORWARD_CHAIN_EDITED)"
 
 # Find the rows and columns. Will default to 80x24 if it can not be detected.
 screen_size=$(stty size 2>/dev/null || echo 24 80)
@@ -59,7 +46,7 @@ echo ":::"
             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 $!; printf "done!\n";
+                    [Yy]* ) printf ":::\tRemoving %s..." "$i"; apt-get -y remove --purge "$i" &> /dev/null & spinner $!; printf "done!\n";
                             if [ "$i" == "openvpn" ]; then UINST_OVPN=1 ; fi
                             if [ "$i" == "unattended-upgrades" ]; then UINST_UNATTUPG=1 ; fi
                             break;;
@@ -74,44 +61,57 @@ echo ":::"
 
     # Take care of any additional package cleaning
     printf "::: Auto removing remaining dependencies..."
-    $SUDO apt-get -y autoremove &> /dev/null & spinner $!; printf "done!\n";
+    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";
+    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
+    rm -rf /opt/pivpn &> /dev/null
-    $SUDO rm -rf /etc/.pivpn &> /dev/null
+    rm -rf /etc/.pivpn &> /dev/null
-    $SUDO rm -rf /home/$INSTALL_USER/ovpns &> /dev/null
+    rm -rf /home/$INSTALL_USER/ovpns &> /dev/null
 
-    $SUDO rm -rf /var/log/*pivpn* &> /dev/null
+    rm -rf /var/log/*pivpn* &> /dev/null
-    $SUDO rm -rf /var/log/*openvpn* &> /dev/null
+    rm -rf /var/log/*openvpn* &> /dev/null
     if [[ $UINST_OVPN = 1 ]]; then
-        $SUDO rm -rf /etc/openvpn &> /dev/null
+        rm -rf /etc/openvpn &> /dev/null
         if [[ $PLAT == "Ubuntu" || $PLAT == "Debian" ]]; then
             printf "::: Removing openvpn apt source..."
-            $SUDO rm -rf /etc/apt/sources.list.d/swupdate.openvpn.net.list &> /dev/null
+            rm -rf /etc/apt/sources.list.d/swupdate.openvpn.net.list &> /dev/null
-            $SUDO apt-get -qq update & spinner $!; printf "done!\n";
+            apt-get -qq update & spinner $!; printf "done!\n";
         fi
     fi
     if [[ $UINST_UNATTUPG = 1 ]]; then
-        $SUDO rm -rf /var/log/unattended-upgrades
+        rm -rf /var/log/unattended-upgrades
-        $SUDO rm -rf /etc/apt/apt.conf.d/*periodic
+        rm -rf /etc/apt/apt.conf.d/*periodic
     fi
-    $SUDO rm -rf /etc/pivpn &> /dev/null
+    rm -rf /etc/pivpn &> /dev/null
-    $SUDO rm /usr/local/bin/pivpn &> /dev/null
+    rm /usr/local/bin/pivpn &> /dev/null
-    $SUDO rm /etc/bash_completion.d/pivpn
+    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
 
     if [[ $NO_UFW -eq 0 ]]; then
-        $SUDO sed -z "s/*nat\n:POSTROUTING ACCEPT \[0:0\]\n-I POSTROUTING -s 10.8.0.0\/24 -o $IPv4dev -j MASQUERADE\nCOMMIT\n\n//" -i /etc/ufw/before.rules
+      sed -z "s/*nat\n:POSTROUTING ACCEPT \[0:0\]\n-I POSTROUTING -s 10.8.0.0\/24 -o $IPv4dev -j MASQUERADE\nCOMMIT\n\n//" -i /etc/ufw/before.rules
-        $SUDO ufw delete allow "$PORT"/"$PROTO" >/dev/null
+      ufw delete allow "$PORT"/"$PROTO" >/dev/null
-        $SUDO ufw route delete allow in on tun0 from 10.8.0.0/24 out on "$IPv4dev" to any >/dev/null
+      ufw route delete allow in on tun0 from 10.8.0.0/24 out on "$IPv4dev" to any >/dev/null
-        $SUDO ufw reload >/dev/null
+      ufw reload >/dev/null
+  else
+      iptables -t nat -D POSTROUTING -s 10.8.0.0/24 -o "${IPv4dev}" -j MASQUERADE
+
+      if [ "$INPUT_CHAIN_EDITED" -eq 1 ]; then
+          iptables -D INPUT -i "$IPv4dev" -p "$PROTO" --dport "$PORT" -j ACCEPT
+      fi
+
+      if [ "$FORWARD_CHAIN_EDITED" -eq 1 ]; then
+          iptables -D FORWARD -d 10.8.0.0/24 -i "$IPv4dev" -o tun0 -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
+          iptables -D FORWARD -s 10.8.0.0/24 -i tun0 -o "$IPv4dev" -j ACCEPT
+      fi
+
+      iptables-save > /etc/iptables/rules.v4
     fi
 
     echo ":::"