/usr/local/sbin/named-conf-regen.sh-works 4087 Nov 22 11:23

diff --git a/scripts/named-conf b/scripts/named-conf
new file mode 100755 (executable)
index 0000000..4bba39c
--- /dev/null
+++ b/scripts/named-conf
@@ -0,0 +1,261 @@
+#!/bin/bash
+set -e
+base=/var/named
+conf=$base/conf
+etcfile=/etc/named/zones-rgc
+
+check=true
+install=false
+hostdelg=false
+hostzone=false
+progress=true
+usage=true
+
+while [ $# -gt 0 ]
+do
+       case "$1" in
+       -f)     usage=false; check=false; install=true ;;
+       -y)     usage=false; check=true; install=true ;;
+       -n)     usage=false; check=true; install=false ;;
+       -h)     hostdelg=true; hostzone=false ;;
+       -z)     hostdelg=true; hostzone=true ;;
+       -q)     progress=false ;;
+       *)      echo >&2 "$0: usage: $0 [-y|-f] [-h|-z] [-q]"; exit 3 ;;
+       esac
+       shift
+done
+
+if $usage
+then
+       cat <<END >&2
+usage: named-conf-regen -f|-y|-n [-h|-z]
+operation modes:
+ -f   install without checking  } but you must then
+ -y   check and install         }  ndc reload
+ -n   check only
+additional options:
+ -h   check output from host -C
+ -z   check output from host -C and host -val
+END
+       exit 1
+fi
+
+beginfile () {
+       if $install
+       then
+               exec >$conf/$1.new
+       else
+               exec >/dev/null
+       fi
+       currentfile=$1
+}
+
+endfile () {
+       exec >/dev/null
+       files="$files $currentfile"
+}
+
+installfiles () {
+       if $install
+       then
+               cd $conf
+               for f in $files
+               do
+                       mv -f $f.new $f
+               done
+       fi
+}
+
+warnings=0
+
+warning () {
+       echo >&2 "$zone $style: $*"
+       warnings=$[$warnings+1]
+}
+
+equlines () {
+       if [ "x`echo \" $2\" | wc -l`" != "x`echo \" $3\" | wc -l`" ]
+       then
+               warning "$1 >$2|$3<"
+       fi
+}
+
+checkhostout () {
+       set +e
+       hostout="`host $1 \"$zone\" 2>&1 >/dev/null $2 | egrep -v \
+'^ \!\!\! .* SOA primary .* is not advertised via NS$'`"
+       set -e
+       if [ "x$hostout" = x ]; then return; fi
+       if $hostfirstwarn
+       then
+               warning "warnings from host:"
+               hostfirstwarn=false
+       fi
+       echo >&2 "$hostout"
+}
+
+progress () {
+       if $progress
+       then
+               echo -n "$zone $style                    " >&2
+               echo -ne '\r' >&2
+       fi
+}
+
+cd $base/primary
+zones="*_db"
+
+beginfile primary.zones
+for f in $zones
+do
+       zone="`echo $f | sed -e 's/_db$//'`"
+       cat <<END
+zone "$zone" {
+       type master;
+       file "primary/$f";
+};
+END
+done
+endfile
+
+myname=''
+
+beginfile secondary.zones
+exec <$etcfile
+while read style zone servers
+do
+       names=''
+       case "$style" in
+       myname)
+               myname=$zone
+               continue
+               ;;
+       secondary)
+               progress
+               file="slave/$zone"
+               if $check
+               then
+                       rectype=SOA
+                       set -e; soa="`host -t soa $zone.`"; set +e
+                       soaname="`echo \" $soa\" | expand | sed -e '
+                               s/^ [^ ][^ ]*  *SOA  *//; s/ .*$//; q
+                       '`"
+                       equlines SOA "$soaname" ''
+               fi
+               ;;
+       backup|unoff)
+               progress
+               rectype=NS
+               file="slave/$zone"
+               ;;
+       '#'|'')
+               continue
+               ;;
+       *)
+               echo >&2 "$etcfile: $style"
+               exit 3
+       esac
+
+       if $check
+       then
+               set -e; ns="`host -t ns $zone.`"; set +e
+               nsnames="`echo \" $ns\" | expand | tr A-Z a-z | sed -n '
+                       1s/^ //
+                       s/^[^ ][^ ]*  *ns  *\([0-9a-z][-.0-9a-z]*\)$/\1/p
+               '`"
+               equlines NS "$nsnames" "$ns"
+               nsnames="`echo $nsnames | tr '
+' ' '`"
+
+               if [ "x$myname" != x ]
+               then
+                       meadvert=false
+                       for ns in $nsnames
+                       do
+                               if [ "x$myname" = "x$ns" ]
+                               then
+                                       meadvert=true
+                               fi
+                       done
+               fi
+
+               case "$style" in
+               secondary)      names="$soaname"        ;;
+               unoff|backup)   names="$nsnames"        ;;
+               esac
+
+               case "$style" in
+               secondary|backup)
+                       if [ $meadvert = false ]
+                       then
+                               warning "$myname unlisted NS $nsnames"
+                       fi
+                       ;;
+               unoff)
+                       if $meadvert = false
+                       then
+                               warning "$myname advertised NS $nsnames"
+                       fi
+                       ;;
+               esac
+
+               addrs=''
+               for ns in $names
+               do
+                       set -e; a="`host -t a \"$ns\".`"; set +e
+                       taddrs="`echo \" $a\" | expand | sed -n '
+                                1s/^ //
+                               s/^[^ ][^ ]*  *A  *\([0-9][.0-9]*\)/\1/p
+                       '`"
+                       equlines "A $ns" "$a" "$taddrs"
+                       addrs="$addrs $taddrs"
+               done
+       fi
+
+       cat <<END
+zone "$zone" {
+       type slave;
+       file "$file";
+       masters {
+END
+       for server in $servers
+       do
+               echo "          $server;"
+               if $check
+               then
+                       notfound=true
+                       for addr in $addrs
+                       do
+                               if [ "x$addr" = "x$server" ]
+                               then
+                                       notfound=false
+                               fi
+                       done
+                       if $notfound
+                       then
+ warning "server $server? but $rectype $names" $addrs
+                       fi
+               fi
+       done
+       cat <<END
+       };
+};
+END
+       hostfirstwarn=true
+       if $hostdelg
+       then
+               checkhostout -C
+       fi
+       if $hostzone
+       then
+               checkhostout -val localhost
+       fi
+done
+endfile
+
+if [ $warnings != 0 ]
+then
+       echo >&2 "$warnings warnings                                        "
+fi
+
+installfiles