Change backup handling.

bind_set_renew_tlsa.sh

@@ -42,6 +42,8 @@ conf_file="${working_dir}/conf/bind.conf"
 
 log_file="$(mktemp)"
 
+backup_date="$(date +%Y-%m-%d-%H%M)"
+
 
 #---------------------------------------
 #-----------------------------
@@ -155,7 +157,7 @@ backup_dir () {
    dir_to_backup=$1
    echononl "\tBackup existing directory \"$dir_to_backup\" .."
    if [[ -d "$dir_to_backup" ]] ; then
-      cp -a $dir_to_backup ${dir_to_backup}.BAK.`date +%Y-%m-%d-%H%M`
+      cp -a "$dir_to_backup" "${dir_to_backup}.$backup_date" > $log_file 2>&1
       if [[ $? -eq 0 ]]; then
          echo_ok
       else
@@ -233,7 +235,7 @@ fi
 info "Given TLSA Record: \n\t\033[1m$@\033[m"
 
 
-echononl "\t   Loading default Configuration values from $(basename ${conf_file}).."
+echononl "\tLoading default Configuration values from $(basename ${conf_file}).."
 if [[ ! -f "$conf_file" ]]; then
    echo_skipped
 else
@@ -357,8 +359,9 @@ fi
 
 zone_file_dir="$(dirname $zone_file)"
 
-# - Backup existing zone file directory
+# - Backup zone directory
 # -
+backup_dir $zone_file_dir
 
 
 # - Update/Add TLSA recotd if needed
@@ -374,8 +377,6 @@ if grep -E "^$record_name.+$record_type" $zone_file > /dev/null 2>&1 ; then
       clean_up 0
    else
       _replac_string=${record_arr[@]}
-      # - Backup Zone directory
-      backup_dir $zone_file_dir
 
       # - Replace TLSA Record
       echononl "\tGoing to replace TLSA Record.."
@@ -433,9 +434,6 @@ else
    _tmpfile=`mktemp`
    > $_tmpfile
 
-   # - backup zone directory
-   backup_dir $zone_file_dir
-
    # - Add new TLSA record
    echononl "\tAdd new TLSA record to zonefile \"\".."
    while read -r line || [[ -n "$line" ]]; do
@@ -493,5 +491,21 @@ else
    clean_up 2
 fi
 
+
+
+if [[ -d "${zone_file_dir}.$backup_date" ]] ; then
+   diff -Nur "$zone_file_dir" "${zone_file_dir}.$backup_date" > /dev/null 2>&1
+   if [[ $? -eq 0 ]]; then
+      info "No zone file has changed.\n\t          Removing previously created backup."
+      echononl "\t   Delete '${zone_file_dir}.$backup_date'.."
+      rm -rf "${zone_file_dir}.$backup_date" > $log_file 2>&1
+      if [[ $? -eq 0 ]]; then
+         echo_ok
+      else
+         echo_failed
+      fi
+   fi
+fi
+
 $verbose && echo ""
 clean_up 99