uninstall.sh: updated uninstall script to support openrc service removal. Refacctoring changes done.

Author: ShreyasZare

DnsServerApp/uninstall.sh

@@ -18,26 +18,27 @@ echo ""
 echo "================================="
 echo "Technitium DNS Server Uninstaller"
 echo "================================="
-echo ""
-echo "Uninstalling Technitium DNS Server..."
 
 if [ -d $dnsDir ]
 then
+    echo ""
+    echo "Uninstalling Technitium DNS Server..."
+
+    rm /etc/resolv.conf >/dev/null 2>&1
+
+    if [ -f "$dnsDir/resolv.conf.bak" ] || [ -L "$dnsDir/resolv.conf.bak" ]
+    then
+        cp -a $dnsDir/resolv.conf.bak /etc/resolv.conf >/dev/null 2>&1
+    else
+        printf "nameserver 8.8.8.8\nnameserver 1.1.1.1\n" > /etc/resolv.conf
+    fi
+
     if [ "$(ps --no-headers -o comm 1 | tr -d '\n')" = "systemd" ] 
     then
         systemctl disable dns.service >/dev/null 2>&1
         systemctl stop dns.service >/dev/null 2>&1
         rm /etc/systemd/system/dns.service >/dev/null 2>&1
 
-        rm /etc/resolv.conf >/dev/null 2>&1
-
-        if [ -f "$dnsDir/resolv.conf.bak" ] || [ -L "$dnsDir/resolv.conf.bak" ]
-        then
-            cp -a $dnsDir/resolv.conf.bak /etc/resolv.conf >/dev/null 2>&1
-        else
-            printf "nameserver 8.8.8.8\nnameserver 1.1.1.1\n" > /etc/resolv.conf
-        fi
-
         if [ -f "/etc/NetworkManager/NetworkManager.conf" ]
         then
             currentVal=$(grep -F "dns=" /etc/NetworkManager/NetworkManager.conf)
@@ -52,63 +53,70 @@ then
         systemctl start systemd-resolved >/dev/null 2>&1
 
         userdel -f $serviceUser >/dev/null 2>&1
-    fi
+    elif [ -x "/sbin/rc-service" ]
+    then
+        rc-service dns stop  >/dev/null 2>&1
+        rc-update del dns  >/dev/null 2>&1
+        rm /etc/init.d/dns >/dev/null 2>&1
+        
+        deluser $serviceUser >/dev/null 2>&1
+    fi 2>/dev/null
 
     rm -rf $dnsDir >/dev/null 2>&1
+fi
 
-    if [ -d $dotnetDir ]
-    then
-        echo ""
-        printf "Do you want to uninstall .NET Runtime (Y/n): "
-        read -r answer0 < /dev/tty
-
-        case "$answer0" in
-            [Nn]* )
-                echo ".NET Runtime was not uninstalled."
-                ;;
-            * )
-                echo "Uninstalling .NET Runtime..."
-                rm /usr/bin/dotnet >/dev/null 2>&1
-                rm -rf $dotnetDir >/dev/null 2>&1
-                ;;
-        esac
-    fi
+if [ -d $dotnetDir ]
+then
+    echo ""
+    printf "Do you want to uninstall .NET Runtime (Y/n): "
+    read -r answer0 < /dev/tty
+
+    case "$answer0" in
+        [Nn]* )
+            echo ".NET Runtime was not uninstalled."
+            ;;
+        * )
+            echo "Uninstalling .NET Runtime..."
+            rm /usr/bin/dotnet >/dev/null 2>&1
+            rm -rf $dotnetDir >/dev/null 2>&1
+            ;;
+    esac
+fi
 
-    if [ -d "$dnsConfig" ]
-    then
-        echo ""
-        printf "Do you want to delete the '$dnsConfig' folder which contains all of the DNS server config files? (y/N): "
-        read -r answer1 < /dev/tty
-
-        case "$answer1" in
-            [Yy]* )
-                rm -rf "$dnsConfig" >/dev/null 2>&1
-                echo "The '$dnsConfig' config folder was deleted successfully."
-                ;;
-            * )
-                chown -R root:root "$dnsConfig" >/dev/null 2>&1
-                echo "The '$dnsConfig' config folder was not deleted and it will be reused if you install the DNS server again."
-                ;;
-        esac
-    fi
+if [ -d "$dnsConfig" ]
+then
+    echo ""
+    printf "Do you want to delete the '$dnsConfig' folder which contains all of the DNS server config files? (y/N): "
+    read -r answer1 < /dev/tty
+
+    case "$answer1" in
+        [Yy]* )
+            rm -rf "$dnsConfig" >/dev/null 2>&1
+            echo "The '$dnsConfig' config folder was deleted successfully."
+            ;;
+        * )
+            chown -R root:root "$dnsConfig" >/dev/null 2>&1
+            echo "The '$dnsConfig' config folder was not deleted and it will be reused if you install the DNS server again."
+            ;;
+    esac
+fi
 
-    if [ -d "$dnsLog" ]
-    then
-        echo ""
-        printf "Do you want to delete the '$dnsLog' folder which contains all of the DNS server log files? (y/N): "
-        read -r answer2 < /dev/tty
-
-        case "$answer2" in
-            [Yy]* )
-                rm -rf "$dnsLog" >/dev/null 2>&1
-                echo "The '$dnsLog' logs folder was deleted successfully."
-                ;;
-            * )
-                chown -R root:root "$dnsLog" >/dev/null 2>&1
-                echo "The '$dnsLog' logs folder was not deleted."
-                ;;
-        esac
-    fi
+if [ -d "$dnsLog" ]
+then
+    echo ""
+    printf "Do you want to delete the '$dnsLog' folder which contains all of the DNS server log files? (y/N): "
+    read -r answer2 < /dev/tty
+
+    case "$answer2" in
+        [Yy]* )
+            rm -rf "$dnsLog" >/dev/null 2>&1
+            echo "The '$dnsLog' logs folder was deleted successfully."
+            ;;
+        * )
+            chown -R root:root "$dnsLog" >/dev/null 2>&1
+            echo "The '$dnsLog' logs folder was not deleted."
+            ;;
+    esac
 fi
 
 echo ""