- Add script 'bind_get_zonefile_by_hostname.sh'.

- bind_get_domain_by_hostname.sh: some minor changes and bug fixes.

bind_get_domain_by_hostname.sh

@@ -28,12 +28,28 @@ usage() {
 
    Usage: $(basename $0) [Options] <full-qualified-hostname>
 
-      Script checks if a given hostname is supported by this nameserver. Hostname can
-      alos be a TLD name.
+      Script checks if a given hostname is supported by this nameserver. The concerning
+      zone will be printed out.
 
-      As result the Script returns the zone (domain) of the given hostname." In silent
-      mode (-q), script returns an empty String, if the given hostname is not
-      supported by this nameserver.
+      If running in a terminal and not in silent mode (-q), the output is clearly
+      arranged in a human readable way.
+
+      If not running in a terminal or silent mode (-q) is set, only the name of the 
+      zonefile will be printed out or an empty string, if the given hostname is
+      not supported by this nameservice.
+
+      Parameter "check" can be used, to test whether this script is accessable (e.g. from a 
+      further script on a remote host). Nothing will be done, scripts returns '0'.
+
+      Return (Exit) Codes:
+         success:
+             0:    hostname is supported
+         error:
+            10:    Invalid hostname/domain given
+            11:    the given hostname is not supported by this nameserver
+            12:    given hostname is supported, but this nameserver is not the master of
+                   the concerning zone
+            99:    Fatal error
 
       Options:
 
@@ -106,6 +122,10 @@ echo_skipped() {
    fi
 }
 
+
+trap clean_up SIGHUP SIGINT SIGTERM
+
+
 # - Test whether stdout (file descriptor 1) is a terminal or not (e.g. cron
 # - or if you pipe the output to some other program)
 #
@@ -132,10 +152,18 @@ if [[ $# -ne 1 ]] ; then
    if $verbose ; then
       usage "wrong number of arguments"
    else
-      clean_up 10
+      clean_up 99
    fi
 fi
 
+# - Parameter "check" can be used, to test whether this script
+# - is accessable (e.g. from a script on a remote host)
+# -
+if [[ "$1" = "check" ]]; then
+   info "Script \033[1m$(basename $0)\033[m was successfully invoked, but its only a test."
+   clean_up 0
+fi
+
 hostname=$1
 
 
@@ -143,7 +171,7 @@ $verbose && echo ""
 
 if [[ -z "$hostname" ]] ; then
    error "No hostname/domain given!"
-   clean_up 10
+   clean_up 99
 fi
 
 
@@ -187,7 +215,6 @@ fi
 $verbose && echo ""
 
 
-
 # - Validate Syntax of given domain
 # -
 valid_domain_regex="^([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]{0,61}[a-zA-Z0-9])(\.([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]{0,61}[a-zA-Z0-9]))*$"
@@ -206,28 +233,61 @@ else
    clean_up 10
 fi
 
+
+# - Is hostname supported by this nameserver?
+# -
 _failed=false
-_hostname=$(echo ${hostname//\./\\.})
-while ! grep -E "^\s*zone\s+\"?$_hostname" $ZONES_DECLARATION_FILE > /dev/null 2>&1 ; do
-   hostname=${hostname#*.}
-   _hostname=$(echo ${hostname//\./\\.})
-   if [[ ! $_hostname =~ \. ]]; then
+zone=$hostname
+_zone=$(echo ${zone//\./\\.})
+while ! grep -E "^\s*zone\s+\"?$_zone" $ZONES_DECLARATION_FILE > /dev/null 2>&1 ; do
+   zone=${zone#*.}
+   _zone=$(echo ${zone//\./\\.})
+   if [[ ! $_zone =~ \. ]]; then
       _failed=true
       break
    fi
 done
 
 if $_failed ; then
-   $verbose && error "hostname \"$1\" not supported by this nameserver!"
-else
-   domain=$hostname
-   if $verbose  ; then
-      info "Hosted Zone: \033[1m${domain}\033[m"
-   else
-      echo "$domain"
-   fi
+   $verbose && error "hostname \"$hostname\" not supported by this nameserver!"
+   clean_up 11
 fi
 
-$verbose && echo
+# - Is this nameserver also the master?
+# -
+_found=false
+_found_zonefile=false
+_is_master=false
+zone_file=""
+regex_zone="^[[:space:]]*zone[[:space:]]+\"?$(echo ${zone//\./\\.})\""
+regex_file="^[[:space:]]*file"
+regex_master="type[[:space:]]+master"
+while IFS='' read -r line || [[ -n "$line" ]] ; do
+   if [[ $line  =~ $regex_zone ]]; then
+      _found=true
+   fi
+   if $_found ; then
+      if [[ $line  =~ $regex_master ]]; then
+         _is_master=true
+      fi
+      if [[ "$line"  =~ ^[[:space:]]*\}[[:space:]]*\; ]]; then
+         break
+      fi
+   fi
+done < $ZONES_DECLARATION_FILE
+
+
+if $_is_master ; then
+   if $verbose  ; then
+      info "Hosted Zone: \033[1m${zone}\033[m"
+   else
+      echo "$zone"
+   fi
+else
+   $verbose && error "hostname \"$hostname\" is supported but this nameserver is not the master!"
+   clean_up 12
+fi
+
+$verbose && echo ""
 clean_up 0