From 8d71bf676c7db7cd519e43569fa13e862aaea4f7 Mon Sep 17 00:00:00 2001
From: Christoph <ckubu@oopen.de>
Date: Sat, 25 Feb 2017 17:07:20 +0100
Subject: [PATCH] Run this script only after confirmation, because changes are
 substantial.

---
 change_network_gateway.sh | 69 +++++++++++++++++++++++++++++++++++----
 1 file changed, 63 insertions(+), 6 deletions(-)

diff --git a/change_network_gateway.sh b/change_network_gateway.sh
index 13a99b3..8171fc8 100755
--- a/change_network_gateway.sh
+++ b/change_network_gateway.sh
@@ -84,6 +84,22 @@ exit
 
 }
 
+fatal (){
+   echo ""
+   echo ""
+   if $terminal ; then
+      echo -e "\t[ \033[31m\033[1mFatal\033[m ]: \033[37m\033[1m$*\033[m"
+      echo ""
+      echo -e "\t\033[31m\033[1m           Script will be interrupted..\033[m\033[m"
+   else
+      echo "fatal: $*"
+      echo "Firewall Script will be interrupted.."
+   fi
+   echo ""
+   exit 1
+}
+
+
 error(){
    echo ""
    if $terminal ; then
@@ -139,6 +155,12 @@ echo_SKIPPED() {
    fi
 }
 
+
+# =============
+# --- 
+# =============
+
+
 [ $# -ne "1" ] && usage "wrong number of arguments"
 
 
@@ -162,9 +184,45 @@ case $1 in
       usage
       exit 1
 esac
+
+
+clear
 echo ""
-echo "Configure gateway for network \"$network\".."
 echo ""
+echo -e "\t\033[1;32mChange basic Configuration of this machine to \033[1;37m$network \033[m"
+echo ""
+echo ""
+
+echo -e "Again: \033[1;37mrunning this script will change your system basically.\033[m"
+echo ""
+echo ""
+echo -n "Type upper case 'YES' to continue executing this script: "
+read OK
+if [[ "$OK" = "YES" ]] ; then
+   echo ""
+   echo ""
+   echo -e "\t\033[1;32mConfigure This machine for running as Gateway/Server \033[1;37m$network \033[m"
+   echo ""
+else
+   fatal "Abort by user request - Answer as not 'YES'" 
+fi
+
+if [ "$(stat -c %d:%i /)" = "$(stat -c %d:%i /proc/1/root/.)" ]; then
+
+   if [[ -d "/ro" ]] ; then
+      error "It seems, this is a readonly system and you are not chrooted.\n\n\t            \033[1;37mChanges made by this script are not persistent!!\033[m\n\n\t            Change root to directory '/ro' (\033[1;37mchroot /ro /bin/bash\033[m) and\n\t            run this script again.\033[m"
+   fi
+
+
+   echo -n "Type upper case 'YES' for executing anyway: "
+   read OK
+   if [[ "$OK" != "YES" ]] ; then
+      fatal "Abort by user request - Answer as not 'YES'" 
+   fi
+
+fi
+echo ""
+
 
 # - Nameserver Bind
 # -    /etc/bind/*
@@ -755,14 +813,13 @@ else
    echo_OK 
 fi
 
-_error=false
 if [ "$(stat -c %d:%i /)" = "$(stat -c %d:%i /proc/1/root/.)" ]; then
 
    if [[ -d "/ro" ]] ; then
-      error "It seems, this is a readonly system and you are not chrooted.\n\n\t            \033[1;37mChanges made by this script are not persistent!!\033[m\n\n\t            Change root to directory '/ro' (\033[1;37mchroot /ro /bin/bash\033[m) and\n\t            run this script again.\033[m"
-   fi
 
-   _error=true
+      warn "Again: this script was \033[1;37mnot\033[m running in a chrooted environment."
+
+   fi
 
 else
 
@@ -770,7 +827,7 @@ else
 
 fi
 
-if $_add_support_if i&& ! $_error ; then
+if $_add_support_if ; then
    info "After restarting, you can reach this machine\n\t          at ip-address: \033[1;33m172.16.1.1\033[m"
 fi