0.6-alt1

- add script to generate reverse dns zones

alterator-net-common.spec

@@ -1,8 +1,8 @@
 %define _altdata_dir %_datadir/alterator
 
 Name: alterator-net-common
-Version: 0.5
-Release: alt5
+Version: 0.6
+Release: alt1
 
 Packager: Stanislav Ievlev <inger@altlinux.org>
 
@@ -34,6 +34,9 @@ helpers for etcnet administration
 %_libexecdir/%name/
 
 %changelog
+* Tue Mar 03 2009 Stanislav Ievlev <inger@altlinux.org> 0.6-alt1
+- add script to generate reverse dns zones
+
 * Thu Jan 22 2009 Vladislav Zavjalov <slazav@altlinux.org> 0.5-alt5
 - fix typo (by inger@)
 

alterator-net-common/tools/revdns

@@ -0,0 +1,50 @@
+#!/bin/sh -efu
+
+ip="${1%%/*}"
+mask="${1##*/}"
+
+rdns_net()
+{
+    local net="$1";shift
+    local pos="$1";shift
+    local inc="$1";shift
+
+    local IFS='.'
+    set -- $net
+    case "$pos" in
+	1)
+	    printf "%s\n" "$(( $1 + $inc ))"
+	;;
+	2)
+	    printf "%s.%s\n"  "$(( $2 + $inc ))" "$1"
+	;;
+	3)
+	    printf "%s.%s.%s\n"   "$(( $3 + $inc ))" "$2" "$1"
+	;;
+    esac
+}
+
+net="$(netname "$ip/$mask"|cut -f1)"
+net="${net%%/$mask}"
+
+if [ "$mask" -gt 0 -a "$mask" -le 8 ];then
+    nmask=8
+    pos=1
+
+elif [ "$mask" -gt 8 -a "$mask" -le 16 ];then
+    nmask=16
+    pos=2
+elif [ "$mask" -gt 16 -a "$mask" -le 24 ];then
+    nmask=24
+    pos=3
+else
+    mask=24
+    nmask=24
+    pos=3
+fi
+
+num="$(( 2**($nmask - $mask) - 1 ))"
+
+for i in `seq 0 $num` ;do
+    rdns_net "$net" "$pos" "$i"
+done