Avoid duplicate domain names

src/freedombone

       255) exit 0;;
   esac
 
-  data=$(tempfile 2>/dev/null)
-  trap "rm -f $data" 0 1 2 5 15
-  dialog --backtitle "Freedombone Configuration" \
-      --inputbox "Dynamic DNS provider username" 10 30 2> $data
-  sel=$?
-  case $sel in
-      0) DDNS_USERNAME=$(cat $data);;
-      1) exit 0;;
-      255) exit 0;;
-  esac
-  if [ ! $DDNS_USERNAME ]; then
-      exit 5245
-  fi
+  while [ ! $DDNS_USERNAME ]
+  do
+      data=$(tempfile 2>/dev/null)
+      trap "rm -f $data" 0 1 2 5 15
+      dialog --backtitle "Freedombone Configuration" \
+          --inputbox "Dynamic DNS provider username" 10 30 2> $data
+      sel=$?
+      case $sel in
+          0) DDNS_USERNAME=$(cat $data);;
+          1) exit 0;;
+          255) exit 0;;
+      esac
+  done
 
-  data=$(tempfile 2>/dev/null)
-  trap "rm -f $data" 0 1 2 5 15
-  dialog --backtitle "Freedombone Configuration" \
-      --clear \
-      --insecure \
-      --passwordbox "Dynamic DNS provider password" 10 30 2> $data
-  sel=$?
-  case $sel in
-      0) DDNS_PASSWORD=$(cat $data);;
-      1) exit 0;;
-      255) exit 0;;
-  esac
-  data=$(tempfile 2>/dev/null)
-  trap "rm -f $data" 0 1 2 5 15
-  if [ ! $DDNS_PASSWORD ]; then
-      exit 7229
-  fi
+  while [ ! $DDNS_PASSWORD ]
+  do
+      data=$(tempfile 2>/dev/null)
+      trap "rm -f $data" 0 1 2 5 15
+      dialog --backtitle "Freedombone Configuration" \
+          --clear \
+          --insecure \
+          --passwordbox "Dynamic DNS provider password" 10 30 2> $data
+      sel=$?
+      case $sel in
+          0) DDNS_PASSWORD=$(cat $data);;
+          1) exit 0;;
+          255) exit 0;;
+      esac
+  done
 
-  data=$(tempfile 2>/dev/null)
-  trap "rm -f $data" 0 1 2 5 15
-  dialog --backtitle "Freedombone Configuration" \
-      --inputbox "Your full name (or nick)" 10 30 2> $data
-  sel=$?
-  case $sel in
-      0) MY_NAME=$(cat $data);;
-      1) exit 0;;
-      255) exit 0;;
-  esac
-  if [ ! $MY_NAME ]; then
-      exit 3784
-  fi
+  while [ ! $MY_NAME ]
+  do
+      data=$(tempfile 2>/dev/null)
+      trap "rm -f $data" 0 1 2 5 15
+      dialog --backtitle "Freedombone Configuration" \
+          --inputbox "Your full name (or nick)" 10 30 2> $data
+      sel=$?
+      case $sel in
+          0) MY_NAME=$(cat $data);;
+          1) exit 0;;
+          255) exit 0;;
+      esac
+  done
 
   data=$(tempfile 2>/dev/null)
   trap "rm -f $data" 0 1 2 5 15
   esac
   LOCAL_NETWORK_STATIC_IP_ADDRESS=$(cat $data | sed -n 1p)
   ROUTER_IP_ADDRESS=$(cat $data | sed -n 2p)
-  echo "local $LOCAL_NETWORK_STATIC_IP_ADDRESS"
-  echo "router $ROUTER_IP_ADDRESS"
-  if [ ! $LOCAL_NETWORK_STATIC_IP_ADDRESS ]; then
-      exit 6950
-  fi
-  if [ ! $ROUTER_IP_ADDRESS ]; then
-      exit 7582
-  fi
 
   data=$(tempfile 2>/dev/null)
   trap "rm -f $data" 0 1 2 5 15
           esac
           MY_BLOG_TITLE=$(cat $data | sed -n 1p)
           FULLBLOG_DOMAIN_NAME=$(cat $data | sed -n 2p)
+          if [[ $FULLBLOG_DOMAIN_NAME == "$WIKI_DOMAIN_NAME" ]]; then
+              FULLBLOG_DOMAIN_NAME=""
+          fi
       done
       if [ ! $DOMAIN_NAME ]; then
           DOMAIN_NAME=$FULLBLOG_DOMAIN_NAME
               255) exit 0;;
           esac
           MICROBLOG_DOMAIN_NAME=$(cat $data | sed -n 1p)
+          if [[ $MICROBLOG_DOMAIN_NAME == "$REDMATRIX_DOMAIN_NAME" ]]; then
+              MICROBLOG_DOMAIN_NAME=""
+          fi
       done
       if [ ! $DOMAIN_NAME ]; then
           DOMAIN_NAME=$MICROBLOG_DOMAIN_NAME
   fi
 
   if [ ! $DOMAIN_NAME ]; then
-      data=$(tempfile 2>/dev/null)
-      trap "rm -f $data" 0 1 2 5 15
-      dialog --backtitle "Freedombone Configuration" \
-          --inputbox "Domain name" 10 30 2> $data
-      sel=$?
-      case $sel in
-          0) DOMAIN_NAME=$(cat $data);;
-          1) exit 0;;
-          255) exit 0;;
-      esac
-      if [ ! $DOMAIN_NAME ]; then
-          exit 3846
-      fi
-
-      if [[ $DDNS_PROVIDER == "default@freedns.afraid.org" ]]; then
+      while [ ! $DOMAIN_NAME ]
+      do
           data=$(tempfile 2>/dev/null)
           trap "rm -f $data" 0 1 2 5 15
           dialog --backtitle "Freedombone Configuration" \
-              --inputbox "FreeDNS subdomain code" 10 30 2> $data
+              --inputbox "Domain name" 10 30 2> $data
           sel=$?
           case $sel in
-              0) FREEDNS_SUBDOMAIN_CODE=$(cat $data);;
+              0) DOMAIN_NAME=$(cat $data);;
               1) exit 0;;
               255) exit 0;;
           esac
-          if [ ! $FREEDNS_SUBDOMAIN_CODE ]; then
-              exit 7422
-          fi
+      done
+
+      if [[ $DDNS_PROVIDER == "default@freedns.afraid.org" ]]; then
+          while [ ! $FREEDNS_SUBDOMAIN_CODE ]
+          do
+              data=$(tempfile 2>/dev/null)
+              trap "rm -f $data" 0 1 2 5 15
+              dialog --backtitle "Freedombone Configuration" \
+                  --inputbox "FreeDNS subdomain code" 10 30 2> $data
+              sel=$?
+              case $sel in
+                  0) FREEDNS_SUBDOMAIN_CODE=$(cat $data);;
+                  1) exit 0;;
+                  255) exit 0;;
+              esac
+          done
       fi
   fi
 
-  data=$(tempfile 2>/dev/null)
-  trap "rm -f $data" 0 1 2 5 15
-  dialog --backtitle "Freedombone Configuration" \
-      --inputbox "Your email address" 10 30 "$MY_USERNAME@$DOMAIN_NAME" 2> $data
-  sel=$?
-  case $sel in
-      0) MY_EMAIL_ADDRESS=$(cat $data);;
-      1) exit 0;;
-      255) exit 0;;
-  esac
-  if [ ! $MY_EMAIL_ADDRESS ]; then
-      exit 8357
-  fi
+  while [ ! $MY_EMAIL_ADDRESS ]
+  do
+      data=$(tempfile 2>/dev/null)
+      trap "rm -f $data" 0 1 2 5 15
+      dialog --backtitle "Freedombone Configuration" \
+          --inputbox "Your email address" 10 30 "$MY_USERNAME@$DOMAIN_NAME" 2> $data
+      sel=$?
+      case $sel in
+          0) MY_EMAIL_ADDRESS=$(cat $data);;
+          1) exit 0;;
+          255) exit 0;;
+      esac
+  done
 
   save_configuration_file