Date: Thu, 22 Oct 1998 14:02:02 -0500 (EST) From: nvp@mediaone.net To: dwhite@resnet.uoregon.edu (Doug White) Cc: samz@oz.net, freebsd-questions@FreeBSD.ORG Subject: Re: Named on 3.0 Message-ID: <19981022190202.8525.qmail@inhaler.noopy.org> In-Reply-To: <Pine.BSF.4.03.9810220933090.12898-100000@resnet.uoregon.edu> from Doug White at "Oct 22, 98 09:34:29 am"
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> > I just upgraded to FreeBSD 3.0 and noticed some of the changes in named. I
> > had no problems with the new named.conf file. Let me explain what I have
> > been doing.
>
> Yes, 3.0 uses Bind8 instead of bind4. Unfortunately there isn't much
> documentation on bind8, but afaik the zone information is the same as
> before.
I'd also suggest grabbing your old named.boot if you still have it and
using this script (named-bootconf.pl) to make things work for you.
Make sure to copy your existing named.conf to named.conf.orig or such.
Usage: perl named-bootconf.pl named.boot > named.conf.file.here
After you've done the conversion, restart named.
#!/usr/bin/perl
## Copyright (c) 1996, 1997 by Internet Software Consortium
##
## Permission to use, copy, modify, and distribute this software for any
## purpose with or without fee is hereby granted, provided that the above
## copyright notice and this permission notice appear in all copies.
##
## THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
## ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
## OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
## CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
## DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
## PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
## ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
## SOFTWARE.
## $Id: named-bootconf.pl,v 8.16 1998/02/13 19:48:25 halley Exp $
# This is a filter. Input is a named.boot. Output is a named.conf.
$new_config = "";
$have_options = 0;
%options = ();
%options_comments = ();
@topology = ();
@topology_comments = ();
@bogus = ();
@bogus_comments = ();
@transfer_acl = ();
@transfer_comments = ();
$logging = "";
while(<>) {
next if /^$/;
# skip comment-only lines
if (/^\s*;+\s*(.*)$/) {
$new_config .= "// $1\n";
next;
}
# handle continued lines
while (/\\$/) {
s/\\$/ /;
$_ .= <>;
}
chop;
# deal with lines ending in a coment
if (s/\s*;+\s*(.*)$//) {
$comment = "// $1";
} else {
$comment = "";
}
($directive, @rest) = split;
$class = "";
if ($directive =~ /^(.*)\/(.*)$/) {
$directive = $1;
$class = $2;
}
if ($directive eq "primary") {
$zname = shift(@rest);
&maybe_print_comment("","\n");
$new_config .= "zone \"$zname\" ";
if ($class ne "") {
$new_config .= "$class ";
}
$new_config .= "{\n";
$new_config .= "\ttype master;\n";
$filename = shift(@rest);
$new_config .= "\tfile \"$filename\";\n";
$new_config .= "};\n\n";
} elsif ($directive eq "secondary" || $directive eq "stub") {
if ($directive eq "secondary") {
$type = "slave";
} else {
$type = "stub";
}
$zname = shift(@rest);
&maybe_print_comment("","\n");
$new_config .= "zone \"$zname\" ";
if ($class ne "") {
$new_config .= "$class ";
}
$new_config .= "{\n";
$new_config .= "\ttype $type;\n";
$filename = pop(@rest);
if ($filename =~ /^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+$/) {
push(@rest, $filename);
$filename = "";
} else {
$new_config .= "\tfile \"$filename\";\n";
}
$new_config .= "\tmasters {\n";
foreach $master (@rest) {
$new_config .= "\t\t$master;\n";
}
$new_config .= "\t};\n";
$new_config .= "};\n\n";
} elsif ($directive eq "cache") {
$zname = shift(@rest);
&maybe_print_comment("","\n");
$new_config .= "zone \"$zname\" {\n";
$new_config .= "\ttype hint;\n";
$filename = shift(@rest);
$new_config .= "\tfile \"$filename\";\n";
$new_config .= "};\n\n";
} elsif ($directive eq "directory") {
$options{"directory"} = "\"$rest[0]\"";
$options_comments{"directory"} = $comment;
$have_options = 1;
} elsif ($directive eq "check-names") {
$type = shift(@rest);
if ($type eq "primary") {
$type = "master";
} elsif ($type eq "secondary") {
$type = "slave";
}
$action = shift(@rest);
$options{"check-names $type"} = $action;
$options_comments{"check-names $type"} = $comment;
$have_options = 1;
} elsif ($directive eq "forwarders") {
$options{"forwarders"}="{\n";
foreach $forwarder (@rest) {
$options{"forwarders"} .= "\t\t$forwarder;\n";
}
$options{"forwarders"} .= "\t}";
$options_comments{"forwarders"} = $comment;
$have_options = 1;
} elsif ($directive eq "slave") {
&handle_options("forward-only");
} elsif ($directive eq "options") {
&handle_options(@rest);
} elsif ($directive eq "limit") {
&handle_limit(@rest);
} elsif ($directive eq "include") {
$new_config .=
"// make sure your include is still in the right place\n";
$comment = "\t" . $comment;
$new_config .= "include \"$rest[0]\";$comment\n\n";
} elsif ($directive eq "xfrnets" || $directive eq "tcplist") {
if ($comment ne "") {
$comment = "\t$comment";
}
foreach $elt (@rest) {
push(@transfer_acl, $elt);
push(@transfer_comments, $comment);
}
$have_options = 1;
} elsif ($directive eq "sortlist") {
if ($comment ne "") {
$comment = "\t$comment";
}
foreach $elt (@rest) {
push(@topology, $elt);
push(@topology_comments, $comment);
}
} elsif ($directive eq "bogusns") {
if ($comment ne "") {
$comment = "\t$comment";
}
foreach $elt (@rest) {
push(@bogus, $elt);
push(@bogus_comments, $comment);
}
} elsif ($directive eq "max-fetch") {
$options{"transfers-in"}=$rest[0];
$options_comments{"transfers-in"}=$comment;
$have_options = 1;
} else {
$new_config .= "// NOTE: unconverted directive '$directive @rest'\n\n";
}
}
print "// generated by named-bootconf.pl\n\n";
if ($have_options) {
print "options {\n";
foreach $option (sort(keys(%options))) {
print "\t$option $options{$option};";
if ($options_comments{$option} ne "") {
print "\t$options_comments{$option}";
}
print "\n";
}
if (@transfer_acl > 0) {
print "\tallow-transfer {\n";
for ($i = 0; $i <= $#transfer_acl; $i++) {
&print_maybe_masked("\t\t", $transfer_acl[$i],
$transfer_comments[$i]);
}
print "\t};\n";
}
print "\t/*
\t * If there is a firewall between you and nameservers you want
\t * to talk to, you might need to uncomment the query-source
\t * directive below. Previous versions of BIND always asked
\t * questions using port 53, but BIND 8.1 uses an unprivileged
\t * port by default.
\t */
\t// query-source address * port 53;
";
print "};\n\n";
}
if ($logging ne "") {
print "logging {\n$logging};\n\n";
}
if (@topology > 0) {
print "// Note: the following will be supported in a future release.\n";
print "/*\n";
print "host { any; } {\n\ttopology {\n";
for ($i = 0; $i <= $#topology; $i++) {
&print_maybe_masked("\t\t", $topology[$i],
$topology_comments[$i]);
}
print "\t};\n};\n";
print "*/\n";
print "\n";
}
if (@bogus > 0) {
for ($i = 0; $i <= $#bogus; $i++) {
print "server $bogus[$i] { bogus yes; };$bogus_comments[$i]\n";
}
print "\n";
}
print $new_config;
exit 0;
sub maybe_print_comment {
$prefix = shift;
$suffix = shift;
if ($comment ne "") {
$new_config .= sprintf("%s%s%s", $prefix, $comment, $suffix);
}
}
sub handle_options {
foreach $option (@_) {
if ($option eq "forward-only") {
$options{"forward"}="only";
$options_comments{"forward"}=$comment;
$have_options = 1;
} elsif ($option eq "no-recursion") {
$options{"recursion"}="no";
$options_comments{"recursion"}=$comment;
$have_options = 1;
} elsif ($option eq "no-fetch-glue") {
$options{"fetch-glue"}="no";
$options_comments{"fetch-glue"}=$comment;
$have_options = 1;
} elsif ($option eq "fake-iquery") {
$options{"fake-iquery"}="yes";
$options_comments{"fake-iquery"}=$comment;
$have_options = 1;
} elsif ($option eq "query-log") {
if ($comment ne "") {
$logging .= "\t$comment\n";
}
$logging .= "\tcategory queries { default_syslog; };\n";
} else {
$options{"// NOTE: unconverted option '$option'"}="";
$options_comments{"// NOTE: unconverted option '$option'"}=
$comment;
$have_options = 1;
}
}
}
sub handle_limit {
$limit = shift;
if ($limit eq "datasize" || $limit eq "transfers-in"
|| $limit eq "transfers-per-ns" || $limit eq "files") {
$options{$limit}=$_[0];
$options_comments{$limit}=$comment;
$have_options = 1;
} else {
$options{"// NOTE: unconverted limit '$limit @_'"}="";
$options_comments{"// NOTE: unconverted limit '$limit @_'"}=$comment;
$have_options = 1;
}
}
sub print_maybe_masked {
# this assumes a contiguous netmask starting at the MSB
$prefix = shift;
$elt = shift;
$elt_comment = shift;
if ($elt =~ /^(.*)&(.*)$/) {
$address = $1;
$mask = $2;
($m1,$m2,$m3,$m4) = split(/\./, $mask);
$mask_val = ($m1 << 24) + ($m2 << 16) +($m3 << 8) + $m4;
$zero_bits = 0;
while (($mask_val % 2) == 0) {
$mask_val /= 2;
$zero_bits++;
}
$mask_bits = 32 - $zero_bits;
} else {
$address = $elt;
($a1,$a2,$a3,$a4) = split(/\./, $address);
if ($a1 < 128) {
$mask_bits = 8;
} elsif ($a1 < 192) {
$mask_bits = 16;
} else {
$mask_bits = 24;
}
}
print "$prefix$address";
if ($mask_bits != 32) {
print "/$mask_bits";
}
print ";$elt_comment\n";
}
--
Nate Patwardhan
nvp@mediaone.net
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