-#!/usr/bin/perl
+#!/usr/bin/perl -w
-$base= "/var/named";
-$conf= "$base/conf";
-$etcfile= "/etc/named/zones-rgc";
+use strict;
+use IO::File;
+use Data::Dumper;
+use POSIX;
-$check= 1;
-$progress= 1;
+use vars qw($quis
+ $mode $doall
+ $etcfile $where
+ $debug $needglue $localonly $verbosity);
-while ($ARGV[0] =~ m/^\-/) {
+$quis= $0; $quis =~ s,.*/,,;
+
+$mode= '';
+$doall= 0;
+$etcfile= "/etc/bind/chiark-conf-gen.zones";
+$where= '<built-in>';
+$debug= 0;
+$needglue= 2;
+$localonly= 0;
+$verbosity= 1;
+
+use vars qw($dig_owner $dig_type $dig_rdata);
+
+while (@ARGV && $ARGV[0] =~ m/^\-/) {
$_= shift @ARGV;
- last if m/^\-\-?$/;
- while (m/^\-./) {
- if (s/^\-f/-/) { $usage=0; $check=0; $install++; }
- elsif (s/^\-y/-/) { $usage=0; $check=1; $install++; }
- elsif (s/^\-n/-/) { $usage=0; $check=1; $install=0; }
- elsif (s/^\-h/-/) { $hostdelg=1; $hostzone=0; }
- elsif (s/^\-z/-/) { $hostdelg=1; $hostzone=1; }
- elsif (s/^\-q/-/) { $progress=0; }
- else { $usage=1; break; }
+ if (s/^\-\-//) {
+ last if m/^$/;
+ if (m/^(yes|no|force)$/) { m/^./; $mode= $&; }
+ elsif (m/^all$/) { $doall=1; }
+ elsif (m/^config$/) { $etcfile= loarg(); $where= '--config option'; }
+ elsif (m/^glueless$/) { $needglue--; }
+ elsif (m/^localonly$/) { $localonly=1; }
+ elsif (m/^quiet$/) { $verbosity=0; }
+ elsif (m/^verbose$/) { $verbosity=2; }
+ else { usageerr("unknown option --$_"); }
+ } else {
+ s/^\-//;
+ last if m/^$/;
+ while (m/^./) {
+ if (s/^[ynf]//) { $mode=$&; }
+ elsif (s/^A//) { $doall=1; }
+ elsif (s/^C//) { $etcfile= soarg(); $where= '-C option'; }
+ elsif (s/^D//) { $debug++; }
+ elsif (s/^g//) { $needglue--; }
+ elsif (s/^l//) { $localonly=1; }
+ elsif (s/^q//) { $verbosity=0; }
+ elsif (s/^v//) { $verbosity=2; }
+ else { usageerr("unknown option -$&"); }
+ }
}
}
-die
-"usage: named-conf-regen -f|-y|-n [-h|-z]\n".
+sub loarg() { usageerr("missing option value") if !@ARGV; return shift @ARGV; }
+sub soarg() { my ($rv); $rv=$_; $_=''; return length $rv ? $rv : loarg(); }
+
+usageerr("-g may be specified at most twice") if $needglue<0;
+usageerr("-D may be specified at most twice") if $debug>2;
+usageerr("must specify either -f|-y|-n or zones (and not both)")
+ if !!$mode == !!@ARGV;
+
+sub usageerr ($) {
+ die
+"$_[0]
+usage: named-conf-regen [-rvq] -f|-y|-n|<zone>...\n".
"operation modes:\n".
-" -f install without checking -ff and then ndc reload\n".
-" -y check and install -yy and then ndc reload\n".
-" -n check only\n".
+" -f --force install without checking\n".
+" -y --yes check and install\n".
+" -n --no check only\n".
"additional options:\n".
-" -h check output from host -C\n".
-" -z check output from host -C and host -val\n".
- if $usage;
-
-beginfile('secondary.zones');
-open E, "< $etcfile" or die "$0: open $etcfile: $!\n";
-for (;;) {
- $!=0; defined $_=<E> or die "$0: read $etcfile $!\n";
- s/^\s+//; chomp; s/\s+$//;
- next if m/^\#/;
- last if m/^end$/;
- if (m/^myname\s+(\S.*\S)/) {
- @mynames= split /\s+/, $1;
- } elsif (m/^(secondary|backup|unoff)\s+(\S+)\s+([0-9. \t]+)$/) {
- $style= $1;
- $zone= $2;
- @servers= split /\s+/, $3;
- $file= "slave/$zone";
- progress();
- check();
- } else {
- die "$0: $etcfile:$.: syntax error in \`$_'\n";
+" -q --quiet no output for OK zones\n".
+" -v --verbose extra verbose\n";
+}
+
+cfg_fail("config filename $etcfile should not be directory")
+ if $etcfile =~ m,/$,;
+
+use vars qw($default_dir);
+$default_dir= $etcfile =~ m,^.*/, ? $& : './';
+
+use vars qw($slave_dir $slave_prefix $slave_suffix);
+$slave_dir= 'slave';
+$slave_prefix= '';
+$slave_suffix= '';
+
+use vars qw(@self_ns @self_soa @self_addr);
+@self_ns= @self_soa= @self_addr= ();
+
+use vars qw(%zone_cfg @zone_cfg_list);
+%zone_cfg= ();
+@zone_cfg_list= ();
+
+use vars qw($output $default_output %output_contents);
+$output= '';
+$default_output= '';
+%output_contents= ();
+
+use vars qw($check $install);
+$check= $mode !~ m/^f/;
+$install= $mode =~ m/^[yf]/;
+
+read_config($etcfile);
+debug_dump('@zone_cfg_list %zone_cfg');
+process_zones($mode ? @zone_cfg_list : @ARGV);
+debug_dump('%output_contents');
+output_files() if $install;
+
+exit 0;
+
+#-------------------- configuration reading
+
+sub cfg_fail ($) { die "$quis: $where:\n $_[0]\n"; }
+
+sub read_config ($) {
+ my ($if) = @_;
+ my ($fh,$z,@self,$before,
+ $mod,$dir,$prefix,$suffix,$subfile,$lprefix,$lsuffix,$zf);
+ local ($_);
+
+ $fh= new IO::File $if,'r' or cfg_fail("open $if:\n $!");
+ $before= '';
+ for (;;) {
+ if (!defined($_= <$fh>)) {
+ cfg_fail("read config file $if:\n $!") if $fh->error();
+ last;
+ }
+ chomp; s/\s+$//;
+ if (m/\\$/) { $before.= $_; next; }
+ $_= $before.$_;
+ $before= '';
+ s/^\s+//;
+ $where= "$if:$.";
+ next if m/^\#/;
+ last if m/^end$/;
+ next unless m/\S/;
+ if (m/^self(\-ns|\-soa|)\s+(\S.*\S)/) {
+ @self= split /\s+/, $2;
+ @self_ns= @self if $1 ne '-soa';
+ @self_soa= @self if $1 ne '-ns';
+ } elsif (m/^self\-addr\s+([0-9. \t]+)/) {
+ @self_addr= split /\s+/, $1;
+ } elsif (m,^
+ primary\-dir ([*?]?)
+ \s+ (\S+)/([^/ \t]*)
+ (?: \s+ ([^/ \t]*) (?: (/.+) )?
+ )?
+ $,x) {
+ ($mod, $dir, $prefix, $suffix, $subfile) =
+ ($1,qualify($2),$3,$4,$5);
+ $suffix= '' if !defined $suffix;
+ $subfile= '' if !defined $subfile;
+ $suffix= '_db' if !length $suffix && !length $subfile;
+ if (-d "$dir/$prefix") { $dir.='/'; $dir.=$prefix; $prefix=''; }
+ opendir D, $dir or cfg_fail("open primary-dir $dir:\n $!");
+ $lprefix= length $prefix; $lsuffix= length $suffix;
+ while (defined($_= readdir D)) {
+ next if m/^\./ && !$lprefix;
+ next unless length > $lprefix+$lsuffix;
+ next unless substr($_,0,$lprefix) eq $prefix;
+ next unless substr($_,length($_)-$lsuffix) eq $suffix;
+ $z= substr($_,$lprefix,length($_)-($lprefix+$lsuffix));
+ $zf= $dir.'/'.$prefix.$z.$suffix.$subfile;
+ if (!stat $zf) {
+ next if length $subfile && $! == &ENOENT;
+ cfg_fail("cannot stat zonefile $zf:\n $!");
+ }
+ -f _ or cfg_fail("zonefile $zf is not a plain file");
+ zone_conf($z,'primary','p',$mod,$zf);
+ }
+ closedir D or cfg_fail("close primary-dir $dir:\n $!");
+ } elsif (m/^primary([*?]?)\s+(\S+)\s+(\S+)$/) {
+ zone_conf($2,'primary','p',$1,qualify($3));
+ } elsif (m/^published([*?]?)\s+(\S+)\s+([0-9.\t]+)$/) {
+ zone_conf($2,'published','s',$1,'',$3);
+ } elsif (m/^stealth([*?]?)\s+(\S+)\s+([0-9. \t]+)$/) {
+ zone_conf($2,'stealth','u',$1,'',split /\s+/, $3);
+ } elsif (m/^slave\-dir\s+(\S+)(?:(?:\s+(\S+))\s+(\S+))?$/) {
+ ($slave_dir, $slave_prefix, $slave_suffix) = (qualify($1),$2,$3);
+ } elsif (m/^output\s+bind8\+(\S+)$/) {
+ cfg_fail("default output may not apply to only some zones")
+ if @zone_cfg_list && length $default_output;
+ set_output(qualify($1));
+ } elsif (m/^include\s+(\S+)$/) {
+ read_config($1);
+ } else {
+ cfg_fail("unknown configuration directive".
+ " or incorrect syntax or arguments");
+ }
}
+ $fh->close or cfg_fail("close config file $if:\n $!");
}
-sub lookup ($$) {
- my ($type,$domain) = @_;
- my ($c,@result);
- defined($c=open ADH, "-|") or die "$0: fork adnshost: $!\n";
- if (!$c) {
- exec 'adnshost','+Do','+Dt','+Dc','-Cf',"-t$type",
- '-',"$domain.";
- die "$0: exec adnshost: $!\n";
+sub qualify ($) {
+ my ($i) = @_;
+ $i= "$default_dir$i" unless $i =~ m,^/,;
+ return $i;
+}
+
+sub zone_conf ($$$$$@) {
+ my ($zone,$style,$sabbr,$mod,$file,@servers) = @_;
+ my ($sfx,$aref);
+ $file= qualify("$slave_dir/$slave_prefix".$zone.$slave_suffix)
+ unless length $file;
+ if (!length $output) {
+ $default_output= qualify('chiark-conf-gen.bind8')
+ unless length $default_output;
+ set_output($default_output);
}
- @result= <ADH>;
- chomp @result;
- $!=0; close ADH;
- die "$0: lookup -t$type $domain failed $? $!\n" if $? or $!;
- return @result;
+ cfg_fail("redefined zone $zone\n".
+ " earlier definition $zone_cfg{$zone}{'where'}")
+ if exists $zone_cfg{$zone};
+ $zone_cfg{$zone}{'where'}= $where;
+ $zone_cfg{$zone}{'file'}= $file;
+ $zone_cfg{$zone}{'style_p'}= $style.$mod;
+ $zone_cfg{$zone}{'s'}= $sabbr.$mod; # p)rimary s)econdary u)npub f)oreign
+ $zone_cfg{$zone}{'servers'}= [ @servers ];
+ foreach $sfx (qw(soa ns addr)) {
+ { no strict 'refs'; $aref= [ @{ "self_$sfx" } ]; }
+ @$aref or cfg_fail("failed to specify self-$sfx before zone");
+ $zone_cfg{$zone}{"self_$sfx"}= $aref;
+ }
+ $zone_cfg{$zone}{'output'}= $output;
+ push @zone_cfg_list, $zone;
}
-sub lookup1 ($$) {
- my ($type,$domain) = @_;
- my (@result)= lookup($type,$domain);
- @result==1 or die "$0: lookup -t$type $domain gave more than one RR\n";
- return $result[0];
+sub set_output($) {
+ my ($newout) = @_;
+ $output= $newout;
+ $output_contents{$output}= '';
}
-sub check () {
- return unless $check;
- eval {
- $soa= lookup1('soa',$zone);
- $soa_origin=$soa; $soa_origin =~ s/ .*//;
- $soa_origin_addr= lookup1('a',$soa_origin);
- @zone_ns= lookup('ns-',$zone);
+#-------------------- checking
- @ok_sources= ($soa_origin_addr);
- $ok_sources_descr= "SOA ORIGIN $soa_origin [$soa_origin_addr]";
+use vars qw($zone $cfg $warnings);
+$warnings= 0;
- if ($style eq 'unoff' || $style eq 'backup') {
- for $zone_ns (@zone_ns) {
- @zone_ns_addrs= lookup('a',$zone_ns);
- push @ok_sources, @zone_ns_addrs;
- $ok_sources_descr.= ", NS $zone_ns [@zone_ns_addrs]";
- }
+sub progress ($) {
+ return if !$verbosity;
+ print "$_[0]\n";
+}
+
+sub verbose ($) {
+ return if $verbosity<2;
+ print " $_[0]\n";
+}
+
+sub process_zones (@) {
+ my (@zones) = @_;
+ local ($zone,$cfg);
+
+ foreach $zone (@zones) {
+ $cfg= $zone_cfg{$zone} || {
+ 'style_p' => 'foreign',
+ 's' => 'f',
+ 'servers' => [ ],
+ };
+ progress(sprintf "%-40s %s", $zone, $$cfg{'style_p'});
+ if ($check && ($doall || $cfg->{'s'} !~ m/\?/)) {
+ eval {
+ if ($localonly && $cfg->{'s'} =~ m/f/) {
+ zone_warning("foreign zone specified with -l");
+ } elsif ($cfg->{'s'} =~ m/\*/ ||
+ ($localonly && $cfg->{'s'} !~ m/p/)) {
+ zone_check_local();
+ } else {
+ zone_check_full();
+ }
+ };
+ zone_warning("checks failed: $@") if length $@;
}
+ zone_output() if $install;
+ }
+ print STDERR "$quis: $warnings warnings\n" or die $!
+ if $warnings;
+}
+
+sub zone_warning ($) {
+ my ($w) = @_;
+ $w =~ s/\n$//;
+ $w =~ s,\n, // ,g;
+ print STDERR "$zone: warning: $w\n" or die $!;
+ $warnings++;
+}
+
+sub zone_warnmore ($) {
+ print STDERR "$zone: $_[0]\n" or die $!;
+}
- for $server (@servers) {
- grep { $server eq $_ } @ok_sources
- or warn "secondarying from $server which is not ".
- "$ok_sources_desc\n";
+use vars qw(%delgs); # $delgs{$nameserver_list} = [ $whosaidandwhy ]
+use vars qw(%auths); # $auths{$nameserver_list} = [ $whosaidandwhy ]
+use vars qw(%glue); # $glue{$name}{$addr_list} = [ $whosaidandwhy ]
+use vars qw(%soas); # $soa{"$origin $serial"} = [ $whosaidandwhy ]
+use vars qw(%addr_is_ok %warned_glueless %warned_mynameaddr);
+use vars qw($delg_to_us);
+use vars qw(@to_check); # ($addr,$whyask,$is_auth,$glueless_ok, ...)
+use vars qw(@to_check_soa); # ($addr,$whyask, ...)
+
+sub zone_check_full () {
+ zone_reset();
+ zone_investigate();
+ zone_consistency();
+ zone_servers_ok();
+}
+
+sub zone_reset() {
+ %delgs= %auths= %glue= %soas=
+ %warned_glueless= %warned_mynameaddr=
+ %addr_is_ok= ();
+ $delg_to_us= 0;
+ @to_check= @to_check_soa= ();
+}
+
+sub zone_investigate() {
+ my ($super_zone, @super_nsnames,
+ $super_ns, @super_ns_addrs, $s, $wa, $is_auth,
+ %nsrrset_checked, %soa_checked, $addr, $glueless_ok, $rcode);
+
+ $super_zone= $zone;
+ for (;;) {
+ debug_trace("zone $zone superzone $super_zone");
+ $super_zone =~ s/^[^.]+\.// or die "no superzone ? ($super_zone)\n";
+ ($rcode,@super_nsnames)= lookup($super_zone,'ns-','06');
+ last if !$rcode;
+ }
+ for $super_ns (@super_nsnames) {
+ $super_ns= lc $super_ns;
+ ($rcode,@super_ns_addrs)= lookup($super_ns,'a','0');
+ foreach $addr (@super_ns_addrs) {
+ push @to_check,
+ $addr,
+ "$super_ns, server for $super_zone",
+ 0, 0;
+ }
+ }
+ for (;;) {
+ # We do these in order so that we always do NS RRset checks on
+ # nameservers that came from other NS RRsets first; otherwise
+ # we might set nsrrset_checked due to a glueless_ok check,
+ # and then not check for gluefulness later.
+ debug_dump('@to_check @to_check_soa');
+ if (($addr,$wa,$is_auth,$glueless_ok,@to_check) = @to_check) {
+ push @to_check_soa, $addr, $wa if $is_auth;
+ next if $nsrrset_checked{$addr}++;
+ zone_check_nsrrset($addr, "[$addr] $wa",
+ $is_auth, $glueless_ok);
+ } elsif (($addr,$wa,@to_check_soa) = @to_check_soa) {
+ next if $soa_checked{$addr}++;
+ zone_check_soa($addr,"[$addr] $wa","[$addr] NS");
+ } else {
+ last;
}
+ }
+}
- if ($style eq 'secondary') {
- grep { $zone_ns=$_, grep { $myname eq $_ } @mynames } @zone_n
- or warn "supposedly published secondary but we ".
- "(@mynames) are not published ($@zone_ns)\n";
+sub zone_check_nsrrset ($$$$) {
+ my ($uaddr,$ww, $is_auth, $glueless_ok) = @_;
+ my (@s, $s, %s2g, @glue, $glue, $delgs_or_auths, $wwn);
+ verbose("checking delegation by $ww");
+ dig(sub {
+ if ($dig_type eq 'ns' && $dig_owner eq $zone) {
+ $s2g{lc $dig_rdata} = [ ];
+ } elsif ($dig_type eq 'a' && exists $s2g{$dig_owner}) {
+ $wwn= "in glue from $ww";
+ push @to_check, $dig_rdata, "$dig_owner, $wwn", 1, 0;
+ zone_server_addr($dig_rdata,$dig_owner,$wwn,"NS [$uaddr]",0);
+ push @{ $s2g{$dig_owner} }, $dig_rdata;
+ }
+ },
+ $zone,'ns',$uaddr);
+ if (!%s2g) { zone_warning("unable to find NS RRset at $ww"); return; }
+ elsif (keys %s2g == 1) { zone_warning("only one nameserver at $ww"); }
+ @s= sort keys %s2g;
+ foreach $s (@s) {
+ @glue= @{ $s2g{$s} };
+ if (!@glue) {
+ zone_warning("glueless NS $s,".
+ ($needglue<=1 ? " (eg)" : "").
+ " from $ww")
+ unless $glueless_ok || !$needglue ||
+ ($needglue<=1 && $warned_glueless{$s}++);
+ next;
}
+ $glue= join ' ', sort @glue;
+ push @{ $glue{$s}{$glue} }, $ww;
}
- check_after_eval();
-
+ $s= join ' ', @s;
+ $delgs_or_auths= $is_auth ? \%auths : \%delgs;
+ push @{ $delgs_or_auths->{$s} }, $ww;
+}
+
+sub zone_server_addr ($$$$$) {
+ my ($addr,$name,$ww,$wwq,$is_soa) = @_;
+ $addr_is_ok{$addr}= "$name ($wwq)"
+ if $is_soa || $cfg->{'s'} =~ m/u/;
+ zone_warning("configured as stealth but we [$addr]".
+ " are published ($name $wwq)")
+ if $cfg->{'s'} =~ m/u/ && grep { $_ eq $addr } @self_addr;
+
+ my ($name_is_self, $addr_is_self);
+ $name_is_self= grep { $_ eq $name }
+ @{ $cfg->{$is_soa ? 'self_soa' : 'self_ns'} };
+ $addr_is_self= grep { $_ eq $addr }
+ @{ $cfg->{'self_addr'} };
+ if ($name_is_self && !$addr_is_self) {
+ zone_warning("our name $name with wrong address [$addr], (eg) $ww")
+ unless $warned_mynameaddr{$name}{$addr}++;
+ } elsif (!$name_is_self && $addr_is_self) {
+ zone_warning(($is_soa ? "SOA ORIGIN maps to" : "allegedly served by").
+ " us [$addr] with wrong name $name, (eg) $ww")
+ unless $warned_mynameaddr{$name}{$addr}++;
+ }
+ $delg_to_us=1 if $name_is_self;
+}
-
-# $superzone= $zone; $superzone =~ s/^[^\.]+\.//;
-# @super_ns= lookup('ns-',$zone);
+sub zone_check_soa ($$$) {
+ my ($uaddr,$ww,$wwq) = @_;
+ my ($lame,$origin,$got,$rcode,@soa_addrs,$soa_addr,$wwn);
+ verbose("checking service at $wwq");
+ $lame= 'dead or lame';
+ dig(sub {
+ if ($dig_type eq 'flags:') {
+ $lame= $dig_rdata =~ m/ aa / ? '' : 'lame';
+ } elsif ($dig_type eq 'soa' && $dig_owner eq $zone && !$lame) {
+ die "several SOAs ? $ww" if defined $origin;
+ $got= $dig_rdata;
+ $got =~ m/^(\S+) \d+/ or die "$got ?";
+ $origin= $1;
+ }
+ },
+ $zone,'soa',$uaddr);
+ $lame= 'broken' if !$lame && !defined $origin;
+ if ($lame) { zone_warning("$lame server $ww"); return; }
+ push @{ $soas{$got} }, $ww;
+ ($rcode,@soa_addrs)= lookup($origin,'a','0');
+ foreach $soa_addr (@soa_addrs) {
+ $wwn= "SOA ORIGIN from $ww";
+ zone_server_addr($soa_addr,$origin,$wwn,"SOA [$uaddr]",1);
+ push @to_check, $soa_addr, "$origin, $wwn";
}
+}
- eval {
-
- for $super_ns (@super_ns) {
- @deleg_ns= ();
- open DIG, "dig @$super_ns. -t ns +norecurse $zone."
- or die "$0: fork for dig: $!\n";
- while (<DIG>) {
-
-
- split /\n/, lookup("
-
- case "$style" in
- secondary|backup)
- if [ $meadvert = 0 ]
- then
- warning "$myname unlisted NS $nsnames"
- fi
- ;;
- unoff)
- if $meadvert = 0
- then
- warning "$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=1
- for addr in $addrs
- do
- if [ "x$addr" = "x$server" ]
- then
- notfound=0
- fi
- done
- if $notfound
- then
- warning "server $server? but $rectype $names" $addrs
- fi
- fi
- done
- cat <<END
- };
-};
-END
- hostfirstwarn=1
- if $hostdelg
- then
- checkhostout -C
- fi
- if $hostzone
- then
- checkhostout -val localhost
- fi
-done
-endfile
+sub zone_consistency() {
+ my ($d, $org_ser, $origin, $a, $h, $self_soa);
+ zone_consistency_set('delegations',\%delgs);
+ foreach $d (keys %delgs) { delete $auths{$d}; }
+ zone_consistency_set('zone nameserver rrset',\%auths);
+ foreach $h (keys %glue) {
+ zone_consistency_set("glue for $h", $glue{$h});
+ }
+ zone_consistency_set("SOA ORIGIN and SERIAL",\%soas);
+ $self_soa= $cfg->{'self_soa'};
+ if ($cfg->{'s'} =~ m/p/) {
+ foreach $org_ser (keys %soas) {
+ $org_ser =~ m/^(\S+) \d+$/ or die "$org_ser ?";
+ $origin= $1;
+ next if grep { $_ eq $origin } @$self_soa;
+ zone_warning("SOA ORIGIN $origin is not our name (@$self_soa),".
+ " eg from ".($soas{$org_ser}[0]));
+ }
+ }
+}
-
-chdir "$base/primary" or die "$0: chdir $base/primary: $!";
-beginfile('primary.zones');
+sub zone_servers_ok () {
+ my ($showok);
+ if (%addr_is_ok) {
+ $showok= 0;
+ foreach $a (@{ $cfg->{'servers'} }) {
+ next if exists $addr_is_ok{$a};
+ zone_warning("we slave from $a"); $showok=1;
+ }
+ if ($showok) {
+ foreach $a (keys %addr_is_ok) {
+ zone_warnmore("permitted master [$a] $addr_is_ok{$a}");
+ }
+ }
+ }
+ if ($cfg->{'s'} =~ m/s/ && !$delg_to_us) {
+ zone_warning("we are supposedly published secondary,".
+ " but not listed as a nameserver");
+ }
+}
-for $f (<*_db>) {
- $zone= $f; $zone =~ s/_db$//;
-
+sub zone_consistency_set ($%) {
+ my ($msg,$set) = @_;
+ my ($d,$o);
+ if (keys(%$set) > 1) {
+ zone_warning("inconsistent $msg:");
+ foreach $d (keys %$set) {
+ foreach $o (@{ $set->{$d} }) { zone_warnmore(" $d from $o"); }
+ }
+ }
+}
-for f in $zones
-do
- zone="`echo $f | sed -e 's/_db$//'`"
- cat <<END
-zone "$zone" {
- type master;
- file "primary/$f";
-};
-END
-done
-endfile
+sub zone_check_local () {
+ zone_reset();
+ zone_servers_simplefind();
+ zone_servers_ok();
+}
+sub zone_servers_simplefind () {
+ my ($rcode,@nsnames,$ns,@soas,$origin);
-
-sub beginfile ($) {
- $currentfile= $_[0];
- $currentfile_opened= $install ? "$conf/$currentfile.new" : "/dev/null";
- open CFF, "> $toopen" or die "$0: begin $currentfile_opened: $!\n";
+ ($rcode,@nsnames)= lookup($zone,'ns-','0');
+ foreach $ns (@nsnames) { zone_server_simple($ns,'NS',0); }
+
+ ($rcode,@soas)= lookup($zone,'soa','0');
+ die "multiple SOA RRs in set! @soas ?" if @soas!=1;
+ $soas[0] =~ m/^(\S+)\s/ or die "SOA ? $_";
+ zone_server_simple(domain_canon($1),'SOA',1);
}
-endfile () {
- close CFF or die "$0: close $currentfile_opened: $!\n";
- push @files, $currentfile;
+sub zone_server_simple ($$$) {
+ my ($name,$ww,$is_soa) = @_;
+ my ($rcode,@addrs,$addr);
+ ($rcode,@addrs)= lookup($name,'a','0');
+ foreach $addr (@addrs) { zone_server_addr($addr,$name,$ww,$ww,$is_soa); }
}
-sub installfiles () {
- return unless $install;
- chdir $conf or die "$0: chdir $conf: $!\n";
- for $f (@files) {
- rename "$f.new", $f or die "$0: install new $f: $!\n";
- }
+#-------------------- outputting
+
+sub zone_output () {
+ $output_contents{$$cfg{'output'}}.=
+ sprintf(<<'END',
+zone "%s" {
+ type %s;
+ file "%s";
+};
+END
+ $zone,
+ $$cfg{'s'} =~ m/p/ ? 'master' : 'slave',
+ $$cfg{'file'});
}
-warning () {
- echo >&2 "$zone $style: $*"
- warnings=$[$warnings+1]
+sub output_files () {
+ my ($fn,$ofn,$mfn,$l,$dir, $maxmode,$h,@to_install);
+
+ foreach $ofn (keys %output_contents) {
+ $fn= $ofn; $mfn= "output file $fn";
+ for (;;) {
+ if (!lstat $fn) {
+ $! == &ENOENT or die "$quis: stat $mfn:\n $!\n";
+ $maxmode= 0666;
+ last;
+ } elsif (-f _) {
+ $maxmode= (stat _)[2];
+ last;
+ } elsif (-l _) {
+ defined($l= readlink $fn)
+ or die "$quis: readlink $mfn:\n $!\n";
+ $dir= $fn =~ m,^.*/, ? $& : './';
+ $fn= "$dir$l" unless $l =~ m,^/,;
+ $mfn= "output file $fn (symlink target of $ofn)";
+ } else {
+ die "$quis: output file $mfn exists but is not a file".
+ " (or symlink to one)";
+ }
+ }
+ unlink "$fn.new" or $! == &ENOENT or
+ die "$quis: cannot clear out old .new version of $mfn:\n $!";
+ $h= new IO::File "$fn.new",'w',$maxmode
+ or die("$quis: create .new version of $mfn:\n $!");
+ print $h
+ "# generated by $quis, do not edit\n",
+ $output_contents{$ofn}
+ or die "$quis: write data to .new version of $mfn:\n $!";
+ $h->close
+ or die "$quis: close .new version of $mfn:\n $!";
+ push @to_install, $fn,$mfn;
+ }
+
+ while (($fn,$mfn, @to_install) = @to_install) {
+ rename "$fn.new",$fn
+ or die "$quis: install new version of $mfn:\n $!";
+ }
}
-equlines () {
- if [ "x`echo \" $2\" | wc -l`" != "x`echo \" $3\" | wc -l`" ]
- then
- warning "$1 >$2|$3<"
- fi
+#-------------------- general utilities
+
+sub debug_dump ($) {
+ my ($vn);
+ return unless $debug>1;
+ local $Data::Dumper::Terse=1;
+ foreach $vn (split /\s+/, $_[0]) {
+ print "$vn := ", eval "Dumper(\\$vn)";
+ }
}
-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 $hostfirstwarn
- then
- warning "warnings from host:"
- hostfirstwarn=0
- fi
- echo >&2 "$hostout"
+sub debug_trace ($) {
+ return unless $debug;
+ print "D $_[0]\n";
}
-progress () {
- if $progress
- then
- echo -n "$zone $style " >&2
- echo -ne '\r' >&2
- fi
+sub lookup ($$$) {
+ my ($domain,$type,$okrcodes) = @_;
+ my ($c,$h,@result);
+ debug_trace("lookup ==> (->$okrcodes) $domain $type");
+ $h= new IO::Handle;
+
+ defined($c= open $h, "-|") or die "$quis: fork adnshost:\n $!\n";
+ if (!$c) {
+ exec 'adnshost','-Fi','+Do','+Dt','+Dc','-Cf',"-t$type",
+ '-',"$domain.";
+ die "$quis: exec adnshost:\n $!\n";
+ }
+ @result= $h->getlines();
+ $h->error and die "$quis: read from adnshost:\n $!\n";
+ chomp @result;
+ $!=0; $h->close;
+ die "$quis: lookup -t$type $domain $okrcodes failed $? $! @result\n"
+ if $! or $?>6 or index($okrcodes,$?)<0;
+ debug_trace("lookup <== $? @result");
+ return ($?,@result);
}
-myname=''
-if [ $warnings != 0 ]
-then
- echo >&2 "$warnings warnings "
-fi
+sub dig (&$$$) {
+ my ($eachrr, $qowner,$qtype,$qaddr) = @_;
+ # also pseudo-rr with type `flags:'
+ my ($h,$inmid,$irdata,$c);
+ local ($_);
-installfiles
+ debug_trace("dig ==> \@$qaddr $qowner $qtype");
+
+ $h= new IO::Handle;
+ defined($c= open $h, "-|") or die "$quis: fork dig:\n $!\n";
+ if (!$c) {
+ open STDERR, ">&STDOUT" or die $!;
+ exec ('dig',
+ '+nodef','+nosea','+nodebug','+norecurse',
+ "\@$qaddr",'-t',$qtype,$qowner);
+ die "$quis: exec dig:\n $!\n";
+ }
+ $inmid='';
+ for (;;) {
+ if (!defined($_= $h->getline())) {
+ $h->error() and die "$quis: read from dig:\n $!\n";
+ last;
+ }
+ chomp;
+ if (length $inmid) {
+ s/^\s+/ / or die "$inmid // $_ ?";
+ s/\;.*$//;
+ $_= $inmid.$_;
+ $inmid='';
+ s/$/ \(/ unless s/\s*\)\s*$//;
+ }
+ if (s/\s*\(\s*$//) { $inmid= $_; next; }
+ if (m/^\;\; flags\:( [-0-9a-z ]+)\;/) {
+ $dig_owner=''; $dig_type='flags:'; $dig_rdata= "$1 ";
+ debug_trace("dig f: $dig_rdata");
+ &$eachrr;
+ } elsif (m/^\;/) {
+ } elsif (!m/\S/) {
+ } elsif (m/^([-.0-9a-z]+)\s+\d\w+\s+in\s+([a-z]+)\s+(\S.*)/i) {
+ $dig_owner=domain_canon($1); $dig_type=lc $2; $irdata=$3;
+ if ($dig_type eq 'a') {
+ $irdata =~ m/^[.0-9]+$/ or die "$irdata ?";
+ $dig_rdata= $&;
+ } elsif ($dig_type eq 'ns') {
+ $irdata =~ m/^[-.0-9a-z]+$/i or die "bad nameserver $irdata ?";
+ $dig_rdata= domain_canon($irdata);
+ } elsif ($dig_type eq 'soa') {
+ $irdata =~ m/^([-.0-9a-z]+)\s+.*\s+(\d+)(?:\s+\d\w+){4}$/i
+ or die "bad SOA $irdata ?";
+ $dig_rdata= domain_canon($1).' '.$2;
+ } else {
+ debug_trace("ignoring uknown RR type $dig_type");
+ next;
+ }
+ debug_trace("dig $dig_owner $dig_type $dig_rdata");
+ &$eachrr;
+ } else {
+ debug_trace("ignoring unknown dig output $_");
+ }
+ }
+ $h->close;
+ debug_trace("dig <== gave $?");
+}
+
+sub domain_canon ($) {
+ local ($_) = @_;
+ s/(.)\.$/$1/;
+ die "domain $_ ?" unless m/^[0-9a-z]/i;
+ return lc $_;
+}
~ian / chiark-utils.git / blobdiff