#!/usr/bin/perl -w
+# This is chiark-named-conf, which is Copyright 2002 Ian Jackson.
+#
+# chiark-named-conf and its manpage are free software; you can
+# redistribute it and/or modify them under the terms of the GNU
+# General Public License as published by the Free Software Foundation;
+# either version 2, or (at your option) any later version.
+#
+# chiark-named-conf and its manpage are distributed in the hope that
+# it will be useful, but WITHOUT ANY WARRANTY; without even the
+# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+# PURPOSE. See the GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
use strict;
use IO::File;
use Data::Dumper;
+use POSIX;
+use Fcntl qw(:DEFAULT :flock);
+
+# bastard Perl wants me to do this now !
+sub loarg();
+sub soarg();
+sub usageerr ($);
+sub cfg_fail ($);
+sub read_config ($);
+sub qualify ($);
+sub bad_modifiers ($);
+sub zone_conf ($$$$$@);
+sub set_output($);
+sub progress ($$);
+sub verbose ($);
+sub process_zones (@);
+sub zone_warning ($$);
+sub zone_warnmore ($);
+sub zone_check_full ();
+sub zone_reset();
+sub zone_investigate();
+sub zone_check_nsrrset ($$$$);
+sub zone_ns_name ($$);
+sub zone_server_queue ($$$$$);
+sub zone_server_addr ($$$$$);
+sub zone_check_soa ($$$$);
+sub zone_consistency();
+sub zone_servers_ok ();
+sub zone_consistency_set ($%);
+sub zone_check_local ();
+sub zone_servers_simplefind ();
+sub zone_server_simple ($$$);
+sub zone_style ($$);
+sub mail_zone_before ();
+sub mail_zone_after ();
+sub pmail ($);
+sub ptime ($);
+sub mail_zone_mail ();
+sub zone_output ();
+sub output_files ();
+sub debug_dump ($);
+sub debug_trace ($);
+sub has_suffix_of ($$);
+sub lookup ($$$$);
+sub dig (&$$$);
+sub domain_canon ($$);
+
+use vars qw($quis $stdout_fh $stderr_fh
+ $mode $doall $domail
+ $etcfile $where
+ $debug $needglue $localonly $repeat $verbosity
+ $admin $mail_state_dir $mail_max_warnfreq
+ $progress_fh $warn_fh $modifiers
+ %group2modcmd %group2used);
+
+$quis= $0; $quis =~ s,.*/,,;
-use vars qw($etcfile $where);
+$mode= '';
+$doall= 0;
$etcfile= "/etc/bind/chiark-conf-gen.zones";
$where= '<built-in>';
-
-use vars qw($mode $verbosity $debug);
-$mode= '';
-$verbosity= 1;
$debug= 0;
+$needglue= 1;
+$localonly= 0;
+$verbosity= 2;
+$admin=''; $mail_state_dir=''; $mail_max_warnfreq= 50;
+$repeat= 0;
+$domail= '';
+$modifiers= '';
+$group2modcmd{'foreign'}= '$!*@?';
+$group2used{'foreign'}= 1;
+
+($progress_fh= $stdout_fh= new_from_fd IO::Handle(1,'w') and
+ $warn_fh= $stderr_fh = new_from_fd IO::Handle(2,'w'))
+ or die "$quis: setup standard filehandles: $!\n";
+
+use vars qw($dig_owner $dig_type $dig_rdata);
while (@ARGV && $ARGV[0] =~ m/^\-/) {
$_= shift @ARGV;
if (s/^\-\-//) {
last if m/^$/;
- if (m/^quiet$/) { $verbosity=0; }
- elsif (m/^verbose$/) { $verbosity=2; }
- elsif (m/^(yes|no|force)$/) { m/^./; $mode= $&; }
+ if (m/^(yes|no|force)$/) { m/^./; $mode= $&; $domail=''; }
+ elsif (m/^nothing$/) { $mode= 'x'; $domail=''; }
+ elsif (m/^mail\-(first|middle|final|final\-test)$/) {
+ $mode='n';
+ $domail=$1;
+ }
+ elsif (m/^all$/) { $doall=1; }
elsif (m/^config$/) { $etcfile= loarg(); $where= '--config option'; }
+ elsif (m/^glueless$/) { $needglue=0; }
+ elsif (m/^localonly$/) { $localonly=1; }
+ elsif (m/^quiet$/) { $verbosity--; }
+ elsif (m/^repeat$/) { $repeat=1; }
+ elsif (m/^verbose$/) { $verbosity++; }
else { usageerr("unknown option --$_"); }
} else {
s/^\-//;
last if m/^$/;
while (m/^./) {
- if (s/^[ynf]//) { $mode=$&; }
- elsif (s/^v//) { $verbosity=2; }
- elsif (s/^q//) { $verbosity=0; }
- elsif (s/^D//) { $debug=1; }
+ if (s/^[ynf]//) { $mode=$&; $domail=''; }
+ elsif (s/^A//) { $doall=1; }
elsif (s/^C//) { $etcfile= soarg(); $where= '-C option'; }
+ elsif (s/^D//) { $debug++; }
+ elsif (s/^g//) { $needglue=0; }
+ elsif (s/^l//) { $localonly=1; }
+ elsif (s/^m(\w+)(\W+)$//) {
+ my ($g,$m) = ($1,$2);
+ $group2modcmd{$g}=$m;
+ usageerr("modifiers $m for group $g: $@") if bad_modifiers($m);
+ }
+ elsif (s/^q//) { $verbosity--; }
+ elsif (s/^r//) { $repeat=1; }
+ elsif (s/^v//) { $verbosity++; }
else { usageerr("unknown option -$&"); }
}
}
sub loarg() { usageerr("missing option value") if !@ARGV; return shift @ARGV; }
sub soarg() { my ($rv); $rv=$_; $_=''; return length $rv ? $rv : loarg(); }
+usageerr("-q may be specified at most twice") if $verbosity<0;
+usageerr("-v may be specified at most once") if $verbosity>3;
+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;
+ if !!$mode == !!@ARGV && !$domail;
sub usageerr ($) {
- die
-"$_[0]
-usage: named-conf-regen [-rvq] -f|-y|-n|<zone>...\n".
-"operation modes:\n".
-" -f --force install without checking\n".
-" -y --yes check and install\n".
-" -n --no check only\n".
-"additional options:\n".
-" -q --quiet no output for OK zones\n".
-" -v --verbose extra verbose\n";
+ die <<END;
+$_[0]
+
+usage: chiark-named-conf [options] -f|-y|-n|<zone>...
+operation modes:
+ -f --force install without checking
+ -y --yes check and install
+ -n --no check only (configured zones)
+ --nothing list zones only
+ --mail-* send mail about broken zones (see manpage)
+ <zone> ... check only (specified zones, even unconfigured ones)
+additional options:
+ -A --all report on zones marked ? (ones we know are broken)
+ -D debug $quis (does not help debug your DNS config)
+ -g --glueless do not warn about any glueless referrals (not recommended)
+ -l --localonly full checks only on zones which we primary
+ -q --quiet no output for OK zones
+ -r --repeat repeat warnings for all sources of imperfect data
+ -v --verbose extra verbose info about each zone
+ -C|--config <DIR/FILE use FILE as default config and DIR as default dir
+
+chiark-named-conf is Copyright 2002 Ian Jackson. It is Free software, under
+the GNU General Public License, and you are welcome to change it and/or
+distribute copies under certain conditions. There is ABSOLUTELY NO WARRANTY.
+END
}
-cfg_fail("config filename $etcfile should have been absolute path of a file")
- unless $etcfile =~ m,^/, && $etcfile !~ m,/$,;
+cfg_fail("config filename $etcfile should not be directory")
+ if $etcfile =~ m,/$,;
use vars qw($default_dir);
-$default_dir= $etcfile;
-$default_dir =~ s,/[^/]+$,,;
+$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_ns= @self_soa= ();
+use vars qw(@self_ns @self_soa @self_addr @forbid_addr @conv_glueless);
+@self_ns= @self_soa= @self_addr= @forbid_addr= ();
+@conv_glueless= qw(in-addr.arpa ip6.arpa ip6.int);
use vars qw(%zone_cfg @zone_cfg_list);
%zone_cfg= ();
%output_contents= ();
use vars qw($check $install);
-$check= $mode !~ m/^n/;
+$check= $mode !~ m/^[fx]/;
$install= $mode =~ m/^[yf]/;
read_config($etcfile);
debug_dump('@zone_cfg_list %zone_cfg');
-process_zones($mode ? @zone_cfg_list : @ARGV);
+process_zones(!@ARGV ? @zone_cfg_list : @ARGV);
debug_dump('%output_contents');
+output_files() if $install;
+$stdout_fh->close or die "$quis: write messages to stdout: $!\n";
+$stderr_fh->close or die "$quis: write messages to stderr: $!\n";
+exit 0;
#-------------------- configuration reading
-sub cfg_fail ($) { die "$0: $where:\n $_[0]\n"; }
+sub cfg_fail ($) { die "$quis: $where:\n $_[0]\n"; }
sub read_config ($) {
my ($if) = @_;
- my ($fh,$z,@self, $dir,$prefix,$suffix,$lprefix,$lsuffix);
+ my ($fh,$z,@self,$before,$group,
+ $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 (s/\\$//) { $before.= $_; next; }
+ $_= $before.$_;
+ $before= '';
+ s/^\s+//;
$where= "$if:$.";
- s/^\s+//; chomp; s/\s+$//;
next if m/^\#/;
last if m/^end$/;
next unless m/\S/;
@self= split /\s+/, $2;
@self_ns= @self if $1 ne '-soa';
@self_soa= @self if $1 ne '-ns';
- } elsif (m/^primary\-dir\s+(\S+)((?:\s+(\S+))??:\s+(\S+))?$/) {
- ($dir, $prefix, $suffix) = (qualify($1),$2,$3);
- $suffix= '_db' if !length $suffix;
+ } elsif (m/^serverless\-glueless\s+(\S.*\S)/) {
+ @conv_glueless= split /\s+/, $1;
+ } elsif (m/^self\-addr\s+([0-9. \t]+)/) {
+ @self_addr= split /\s+/, $1;
+ } elsif (m/^forbid\-addr(?:\s+([0-9. \t]+))?/) {
+ @forbid_addr= defined $1 ? split /\s+/, $1 : ();
+ } elsif (m,^
+ primary\-dir (\W*)
+ \s+ (\S+)/([^/ \t]*)
+ (?: \s+ ([^/ \t]*) (?: (/.+) )?
+ )?
+ $,x) {
+ ($mod, $dir, $prefix, $suffix, $subfile) =
+ ($1,qualify($2),$3,$4,$5);
+ cfg_fail("modifiers $mod for directory $dir: $@")
+ if bad_modifiers($mod);
+ $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 ($!=0, $_= readdir D) {
+ 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));
- zone_conf($z,'primary',"$dir/$_");
+ $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);
}
- $! and cfg_fail("read primary-dir $dir:\n $!");
closedir D or cfg_fail("close primary-dir $dir:\n $!");
- } elsif (m/^primary\s+(\S+)\s+(\S+)$/) {
- zone_conf($1,'primary',qualify($2));
- } elsif (m/^secondary\s+(\S+)\s+([0-9.\t]+)$/) {
- zone_conf($1,'secondary','',$2);
- } elsif (m/^stealth\s+(\S+)\s+([0-9. \t]+)$/) {
- zone_conf($1,'stealth','',split /\s+/, $2);
- } elsif (m/^slave\-dir\s+(\S+)((?:\s+(\S+))??:\s+(\S+))?$/) {
+ } elsif (m/^primary(\W*)\s+(\S+)\s+(\S+)$/) {
+ zone_conf($2,'primary','p',$1,qualify($3));
+ } elsif (m/^published(\W*)\s+(\S+)\s+([0-9.\t]+)$/) {
+ zone_conf($2,'published','s',$1,'',$3);
+ } elsif (m/^stealth(\W*)\s+(\S+)\s+([0-9. \t]+)$/) {
+ zone_conf($2,'stealth','u',$1,'',split /\s+/, $3);
+ } elsif (m/^modifiers\s+(\W+)(?:\s+(\w+))$/) {
+ ($mod,$group) = ($1,$2);
+ cfg_fail("modifiers $mod for group $group: $@")
+ if bad_modifiers($mod);
+ if (exists $group2modcmd{$group}) {
+ $mod= $group2modcmd{$group};
+ $group2used{$group}++;
+ }
+ $modifiers= $mod;
+ } elsif (m/^slave\-dir\s+(\S+)(?:(?:\s+(\S+))\s+(\S+))?$/) {
($slave_dir, $slave_prefix, $slave_suffix) = (qualify($1),$2,$3);
+ $slave_prefix='' if !defined $slave_prefix;
+ $slave_suffix='' if !defined $slave_suffix;
} 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);
+ } elsif (m/^admin\s+(\S+)$/) {
+ $admin=$1;
+ } elsif (m/^mail\-state\-dir\s+(\S+)$/) {
+ $mail_state_dir= $1;
+ } elsif (m/^mail\-max\-warnfreq\s+(\d{1,3}(?:\.\d{0,5})?)$/) {
+ cfg_fail("mail-max-warnfreq must be <=100") if $1>100;
+ $mail_max_warnfreq= $1;
} else {
cfg_fail("unknown configuration directive".
- " or incorrect syntax or arguments");
+ " or incorrect syntax or arguments:\n".
+ " \`$_'");
}
}
+ foreach $group (keys %group2modcmd) {
+ next if exists $group2used{$group};
+ cfg_fail("command line specifies modifier group $group".
+ " but missing in configuration file");
+ }
$fh->close or cfg_fail("close config file $if:\n $!");
}
sub qualify ($) {
my ($i) = @_;
- $i= "$default_dir/$i" unless $i =~ m,^/,;
+ $i= "$default_dir$i" unless $i =~ m,^/,;
+ return $i;
+}
+
+sub bad_modifiers ($) {
+ local ($_) = @_;
+ if (!eval {
+ die "bad modifier $&" if m/[^!*\$\@~?]/;
+ die "repeated modifier $1" if m/(.).*\1/;
+ 1;
+ }) {
+ $@ =~ s/\n//;
+ return 1;
+ }
+ return 0;
}
-sub zone_conf ($$@) {
- my ($zone,$style,$file,@servers) = @_;
+sub zone_conf ($$$$$@) {
+ my ($zone,$style,$sabbr,$mod,$file,@servers) = @_;
+ my ($sfx,$aref);
$file= qualify("$slave_dir/$slave_prefix".$zone.$slave_suffix)
unless length $file;
if (!length $output) {
unless length $default_output;
set_output($default_output);
}
- cfg_fail("redefined zone $zone") if exists $zone_cfg{$zone};
+ cfg_fail("redefined zone $zone\n".
+ " earlier definition $zone_cfg{$zone}{'where'}")
+ if exists $zone_cfg{$zone};
+ $zone_cfg{$zone}{'where'}= $where;
$zone_cfg{$zone}{'file'}= $file;
- $zone_cfg{$zone}{'style'}= $style;
+ $zone_cfg{$zone}{'style_p'}= $style.$mod;
+ $zone_cfg{$zone}{'s'}= "$sabbr $mod $modifiers";
+ # p)rimary s)econdary u)npub f)oreign
+ # followed by modifiers, first per-zone, then default
$zone_cfg{$zone}{'servers'}= [ @servers ];
- $zone_cfg{$zone}{'self_soa'}= [ @self_soa ];
- $zone_cfg{$zone}{'self_ns'}= [ @self_ns ];
+ if ($domail) {
+ length $admin && length $mail_state_dir or
+ cfg_fail("mailing but failed to specify admin".
+ " or mail-state-dir before zone");
+ $zone_cfg{$zone}{'admin'}= $admin;
+ $zone_cfg{$zone}{'maildir'}= qualify($mail_state_dir);
+ $zone_cfg{$zone}{'mailmwarn'}= $mail_max_warnfreq;
+ }
+ foreach $sfx (qw(self_soa self_ns self_addr forbid_addr conv_glueless)) {
+ { no strict 'refs'; $aref= [ @$sfx ]; }
+ @$aref or cfg_fail("failed to specify $sfx before zone")
+ if $sfx =~ m/^self/;
+ $zone_cfg{$zone}{$sfx}= $aref;
+ }
+ foreach $sfx (qw(self_soa self_ns)) {
+ map { s/\*$/$zone/ } @{ $zone_cfg{$zone}{$sfx} };
+ }
$zone_cfg{$zone}{'output'}= $output;
push @zone_cfg_list, $zone;
}
$output_contents{$output}= '';
}
-
#-------------------- checking
-use vars qw($zone $cfg $warnings);
+use vars qw($zone $cfg $warnings %zone_warnings);
$warnings= 0;
-sub progress ($) {
- return if !$verbosity;
- print "$_[0]\n";
+sub progress ($$) {
+ my ($minv,$m) = @_;
+ return if $verbosity < $minv;
+ print $progress_fh "$m\n" or die "$quis: $zone: write log: $!\n";
}
+sub verbose ($) { progress(3, ' ' . $_[0]); }
+
sub process_zones (@) {
my (@zones) = @_;
local ($zone,$cfg);
foreach $zone (@zones) {
$cfg= $zone_cfg{$zone} || {
- 'style' => 'foreign',
+ 'style_p' => 'foreign',
+ 's' => "f $group2modcmd{'foreign'}",
'servers' => [ ],
};
- progress(sprintf "%-40s %s", $zone, $$cfg{'style'});
- if ($check) {
- eval { zone_check() };
- zone_warning("checks failed: $@") if length $@;
+
+ mail_zone_before() or next
+ if $domail;
+ zone_reset();
+ progress(1, sprintf "%-20s %s", $zone, $$cfg{'style_p'});
+ if ($check && ($doall || !zone_style('?',0))) {
+ eval {
+ if ($localonly && $cfg->{'s'} =~ m/f/) {
+ zone_warning("foreign zone specified with -l",'');
+ } elsif ($localonly && $cfg->{'s'} !~ m/p/) {
+ zone_check_local();
+ } else {
+ zone_check_full();
+ }
+ };
+ zone_warning("checks failed: $@",'') if length $@;
}
- zone_output() if $install;
+ $output_contents{$$cfg{'output'}} .= zone_output()
+ if $install;
+
+ mail_zone_after() if $domail;
+ }
+ if ($domail) {
+ } elsif ($warnings) {
+ printf STDERR ("%s: %d warning(s) in %d zone(s);".
+ " %d zone(s) checked ok.\n",
+ $quis,
+ $warnings,
+ scalar(keys %zone_warnings),
+ scalar(@zones - keys %zone_warnings));
+ } else {
+ progress(1, sprintf "%d zone(s) checked ok", scalar @zones);
}
}
-sub zone_warning ($) {
- my ($w) = @_;
+use vars qw(%delgs); # $delgs{$nameserver_list} = [ $whosaidandwhy ]
+use vars qw(%auths); # $auths{$nameserver_list} = [ $whosaidandwhy ]
+use vars qw(%glue); # $glue{$name}{$addr_list} = [ $whosaidandwhy ]
+use vars qw(%soas); # $soa{"$serial $origin"} = [ $whosaidandwhy ]
+use vars qw(%addr_is_ok %warned);
+use vars qw($delg_to_us);
+use vars qw(@to_check); # ($addr,$whyask,$name_if_auth,$glueless_ok, ...)
+use vars qw(@to_check_soa); # ($addr,$whyask,$name,$is_ns, ...)
+
+sub zone_warning ($$) {
+ my ($w,$o) = @_;
+ my ($wk);
+
+ return 0 if !$repeat && $warned{$w}++;
+
$w =~ s/\n$//;
$w =~ s,\n, // ,g;
- print STDERR "$zone: warning: $w\n" or die $!;
+
+ $w .= " ($o)" if length $o;
+ print $warn_fh "$zone: warning: $w\n" or die $!;
$warnings++;
+ $zone_warnings{$zone}++;
+ return 1;
}
sub zone_warnmore ($) {
- print STDERR " $_[0]\n" or die $!;
+ print $warn_fh "$zone: $_[0]\n" or die $!;
}
-use vars qw(%delgs # $delgs{$nameserver_list} = [ $whosaidandwhy ]
- %auths # $auths{$nameserver_list} = [ $whosaidandwhy ]
- %glue # $glue{$name}{$addr_list} = [ $whosaidandwhy ]
- %soas # $soa{"$origin $serial"} = [ $whosaidandwhy ]
- @to_check # ($addr,$whyask,\%delgs_or_auths,$glueless_ok, ...)
- @to_check_soa # ($addr,$whyask, ...)
- %addr_is_ok
- );
-
-sub zone_check () {
- my ($super_zone, @super_nsnames,
- $super_ns, @super_ns_addrs, $super_ns_addr, $s, $wa, $zcr,
- %nsrrset_checked, %soa_checked);
+sub zone_check_full () {
+ zone_investigate();
+ zone_consistency();
+ zone_servers_ok();
+}
- %delgs= %auths= %glue= ();
+sub zone_reset() {
+ %delgs= %auths= %glue= %soas= %warned= %addr_is_ok= ();
+ $delg_to_us= 0;
@to_check= @to_check_soa= ();
+}
- $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,@this_ns_addrs)= lookup($super_ns,'a','0');
- foreach $super_ns_addr (@this_ns_addrs) {
- push @to_check,
- $super_ns_addr,
- "addr for $super_ns, server for $super_zone, parent"
- \%delgs, 0;
+sub zone_investigate() {
+ my ($super_zone, @start_nsnames, $start_ww,
+ $start_ns, @start_ns_addrs, $s, $wa, $name_if_auth,
+ %nsrrset_checked, %soa_checked, $addr, $glueless_ok,
+ $rcode, $name, $is_ns);
+
+ if (!zone_style('*',0)) {
+ $super_zone= $zone;
+ for (;;) {
+ debug_trace("zone $zone superzone $super_zone");
+ $super_zone eq '.'
+ and die "no superzone ? ($super_zone)\n";
+ $super_zone =~ s/^[^.]+\.//
+ or $super_zone= '.';
+ ($rcode,@start_nsnames)=
+ lookup($super_zone,'ns-','06',"superzone search");
+ last if !$rcode;
+ }
+ $start_ww= "server for $super_zone";
+ } else {
+ ($rcode,@start_nsnames)=
+ lookup($zone,'ns-','0',"initial nameserver search");
+ $start_ww= "nameserver for $zone";
+ }
+ for $start_ns (@start_nsnames) {
+ $start_ns= lc $start_ns;
+ ($rcode,@start_ns_addrs)= lookup($start_ns,'a','0',"$start_ww");
+ foreach $addr (@start_ns_addrs) {
+ push @to_check, $addr, "$start_ns, $start_ww", undef, 0;
}
}
for (;;) {
# nameservers that came from other NS RRsets first; otherwise
# we might set nsrrset_checked due to a glueless_ok check,
# and then not check for gluefulness later.
- if (($addr,$wa,$nsrrset_ref,$glueless_ok,@to_check) = @to_check) {
- next if $nsrrset_checked{$ns}++;
- push @to_check_soa, $addr, $why;
- zone_check_nsrrset($super_ns_addr,"$addr, $wa",
- %$delgs_or_auths,$glueless_ok);
- } elsif (($addr,$wa) = @to_check_soa) {
- next if !$soa_checked{$ns}++;
- zone_check_soa($addr,"$addr, $wa");
+ debug_dump('@to_check @to_check_soa');
+ if (($addr,$wa,$name_if_auth,$glueless_ok,@to_check) = @to_check) {
+ push @to_check_soa, $addr, $wa, $name_if_auth, 1,
+ if defined $name_if_auth;
+ next if $nsrrset_checked{$addr}++;
+ zone_check_nsrrset($addr, $wa, $name_if_auth, $glueless_ok);
+ } elsif (($addr,$wa,$name,$is_ns,@to_check_soa) = @to_check_soa) {
+ next if $soa_checked{$addr}++;
+ zone_check_soa($addr,$wa,$name,$is_ns);
+ } else {
+ last;
}
}
- zone_consistency();
+}
+
+sub zone_check_nsrrset ($$$$) {
+ my ($uaddr,$wa, $name_if_auth, $glueless_ok) = @_;
+ my (@s, $s, $a, %s2g, @glue, $glue, $delgs_or_auths, $wwn, $ww);
+ my ($rcode);
+ $ww= "[$uaddr] $wa";
+ verbose("checking delegation by $ww");
+ dig(sub {
+ if ($dig_type eq 'ns' && $dig_owner eq $zone) {
+ $s2g{lc $dig_rdata} = [ ];
+ } elsif ($dig_type eq 'a' && exists $s2g{$dig_owner}) {
+ $wwn= "in glue from $ww";
+ zone_server_queue($dig_rdata,$dig_owner,$wwn,"NS [$uaddr]",0);
+ push @{ $s2g{$dig_owner} }, $dig_rdata;
+ }
+ },
+ $zone,'ns',$uaddr);
+ if (!%s2g) {
+ zone_warning("unable to find NS RRset at [$uaddr]", $wa);
+ return;
+ } elsif (keys %s2g == 1) {
+ zone_warning("only one nameserver ". (join '', keys %s2g),
+ $ww);
+ }
+ @s= sort keys %s2g;
+ foreach $s (@s) {
+ zone_ns_name($s,$ww);
+ @glue= @{ $s2g{$s} };
+ if (!@glue) {
+ zone_warning("glueless NS $s", $ww)
+ unless $glueless_ok || zone_style('~',!$needglue) ||
+ grep { has_suffix_of($zone,".$_"); }
+ @{ $cfg->{'conv_glueless'} };
+ ($rcode,@glue)= lookup($s,'a','0',"glueless NS from $ww");
+ foreach $a (@glue) {
+ $wwn= "glueless NS from $ww";
+ zone_server_queue($a,$s,$wwn,"NS [$uaddr]",0);
+ }
+ }
+ $glue= join ' ', sort @glue;
+ push @{ $glue{$s}{$glue} }, $ww;
+ }
+ $s= join ' ', @s;
+ $delgs_or_auths= defined($name_if_auth) ? \%auths : \%delgs;
+ push @{ $delgs_or_auths->{$s} }, $ww;
+}
+
+sub zone_ns_name ($$) {
+ my ($name,$ww) = @_;
+ my ($cg);
+ $delg_to_us=1 if grep { $name eq $_ } @{ $cfg->{'self_ns'} };
+ foreach $cg (@{ $cfg->{'conv_glueless'} }) {
+ zone_warning("nameserver $name in serverless-glueless".
+ " namespace area $cg",
+ $ww)
+ if has_suffix_of(".$name",".$cg");
+ }
+ zone_warning("published server, as $name, but configured as stealth",
+ $ww)
+ if $cfg->{'s'} =~ m/u/ &&
+ grep { $_ eq $name }
+ @{ $cfg->{'self_ns'} }, @{ $cfg->{'self_soa'} };
+}
+
+sub zone_server_queue ($$$$$) {
+ my ($addr,$name,$wwn,$wwq,$is_soa) = @_;
+ zone_server_addr($addr,$name,$wwn,$wwq,$is_soa);
+ push @to_check, $addr, "$name, $wwn", $name, $is_soa;
+}
+
+sub zone_server_addr ($$$$$) {
+ my ($addr,$name,$ww,$wwq,$is_soa) = @_;
+ debug_trace("zone_server_addr ".join '|',@_);
+ $addr_is_ok{$addr}= "$name ($wwq)"
+ if $is_soa || $cfg->{'s'} =~ m/u/;
+ zone_warning("forbidden nameserver address [$addr] $name",$ww)
+ if grep { $_ eq $addr } @{ $cfg->{'forbid_addr'} };
+
+ my ($name_is_self, $addr_is_self);
+ $name_is_self= grep { $_ eq $name }
+ @{ $cfg->{$is_soa ? 'self_soa' : 'self_ns'} };
+ $addr_is_self= grep { $_ eq $addr }
+ @{ $cfg->{'self_addr'} };
+ if ($name_is_self && !$addr_is_self) {
+ zone_warning("our $name supplied with wrong address [$addr]", $ww);
+ }
+ if (!$name_is_self && $addr_is_self) {
+ zone_warning("we [$addr] are named in ".
+ ($is_soa ? "SOA" : "NS").
+ " by wrong name $name",
+ $ww);
+ }
+ if (!$name_is_self && !$addr_is_self &&
+ $is_soa && $cfg->{'s'} =~ m/p/) {
+ zone_warning("SOA ORIGIN $name is not us (".
+ (join ' ', @{ $cfg->{'self_soa'} }).")", $ww);
+ }
+ $delg_to_us=1 if $addr_is_self && !$is_soa;
+}
+
+sub zone_check_soa ($$$$) {
+ my ($uaddr,$wa,$name,$is_ns) = @_;
+ my ($lame,$serial,$origin,$got,$rcode,@soa_addrs,$soa_addr,$ww,$wwn);
+ verbose("checking service at [$uaddr] $name");
+ $lame= 'dead or lame';
+ $ww= "[$uaddr] $wa";
+ 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/^(\d+) (\S+)$/ or die "$got ?";
+ ($serial,$origin) = ($1,$2);
+ }
+ },
+ $zone,'soa',$uaddr);
+ $lame= 'broken' if !$lame && !defined $origin;
+ if ($lame) { zone_warning("$lame server [$uaddr]",$wa); return; }
+ progress(2, sprintf "%-16s %46s has %s%s",
+ $zone, "$name [$uaddr]", $serial, $is_ns ? '' : '*');
+ push @{ $soas{$got} }, $ww;
+ ($rcode,@soa_addrs)= lookup($origin,'a','0',"SOA ORIGIN");
+ $wwn= "SOA ORIGIN from $ww";
+ foreach $soa_addr (@soa_addrs) {
+ zone_server_queue($soa_addr,$origin,$wwn,"SOA [$uaddr]",1);
+ }
}
sub zone_consistency() {
- my ($d, $org_ser, $origin, $a, $showok);
- zone_consistency_set('delegations',%delgs);
+ my ($d, $org_ser, $origin, $a, $h, $self_soa, $wa);
+ zone_consistency_set('delegations',\%delgs);
foreach $d (keys %delgs) { delete $auths{$d}; }
- zone_consistency_set('zone nameserver rrset',%auths);
+ 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);
- if ($cfg->{'style'} eq 'primary') {
- 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("our name(s) @self_soa not in SOA ORIGIN $origin,".
- " eg from ".((values %{ $soas{$org_ser} })[1]));
- }
+ zone_consistency_set("glue for $h", $glue{$h});
}
- $showok= 0;
- foreach $a (@{ $cfg->{'servers'} }) {
- next if $addr_is_ok{$a};
- zone_warning("we slave from $a"); $showok=1;
+ zone_consistency_set("serial number and/or SOA ORIGIN",\%soas);
+ $self_soa= $cfg->{'self_soa'};
+}
+
+sub zone_servers_ok () {
+ my ($showok,%fs);
+ if (%addr_is_ok) {
+ $showok= 0;
+ foreach $a (@{ $cfg->{'servers'} }) {
+ next if exists $addr_is_ok{$a};
+ zone_warning("we slave from [$a]",'')
+ and $showok=1;
+ }
+ if ($showok) {
+ foreach $a (keys %addr_is_ok) {
+ zone_warnmore("permitted master [$a] $addr_is_ok{$a}");
+ }
+ }
}
- if ($showok) {
- zone_warnmore("we must slave from one of ".
- join ' ', keys %addr_is_ok);
+ if ($cfg->{'s'} =~ m/s/ && !$delg_to_us) {
+ zone_warning("we are supposedly published secondary,".
+ " but not listed as a nameserver",'');
+ map { $fs{$_}=1 } keys(%delgs), keys(%auths);
+ zone_warnmore("servers are: ". join ' ', sort keys %fs);
}
}
-sub zone_consistency_set ($\%) {
+sub zone_consistency_set ($%) {
my ($msg,$set) = @_;
my ($d,$o);
- if (keys(%$set) != 1) {
- zone_warning("inconsistent $msg:");
+ if (keys(%$set) > 1) {
+ zone_warning("inconsistent $msg:",'');
foreach $d (keys %$set) {
- foreach $o (@$d) { zone_warnmore(" $d from $o"); }
+ foreach $o (@{ $set->{$d} }) { zone_warnmore(" $d from $o"); }
}
}
}
-sub zone_check_soa ($$) {
- my ($uaddr,$ww) = @_;
- my ($lame,$origin,$got,$rcode,@soa_addrs,$soa_addr);
- $lame= 'dead or lame';
- dig::dig({
- if ($dig::type eq 'flags:') {
- $lame= $dig::rdata =~ m/ aa / ? 'lame' : '';
- } elsif ($dig::type eq 'soa' && $dig::owner eq $zone && !$lame) {
- die "several SOAs ? $why" if defined $origin;
- $got= $dig::rdata;
- $got =~ m/^(\S+) \d+/ or die "$got ?";
- $origin= $1;
+sub zone_check_local () {
+ zone_servers_simplefind();
+ zone_servers_ok();
+}
+
+sub zone_servers_simplefind () {
+ my ($rcode,@nsnames,$ns,@soas,$origin);
+
+ ($rcode,@nsnames)= lookup($zone,'ns-','0',"zone's servers");
+ foreach $ns (@nsnames) {
+ zone_ns_name($ns,"NS");
+ zone_server_simple($ns,'NS',0);
+ }
+ $delgs{join ' ', sort @nsnames} = [ "zone's servers" ];
+
+ ($rcode,@soas)= lookup($zone,'soa','0',"SOA ORIGIN");
+ die "multiple SOA RRs in set! @soas ?" if @soas!=1;
+ $soas[0] =~ m/^(\S+)\s/ or die "SOA ? $_";
+ zone_server_simple(domain_canon($1,"lookup $zone SOA"),'SOA',1);
+}
+
+sub zone_server_simple ($$$) {
+ my ($name,$ww,$is_soa) = @_;
+ my ($rcode,@addrs,$addr);
+ ($rcode,@addrs)= lookup($name,'a','0', "server - ".
+ ($is_soa ? "SOA ORIGIN" : "NS"));
+ foreach $addr (@addrs) { zone_server_addr($addr,$name,$ww,$ww,$is_soa); }
+}
+
+sub zone_style ($$) {
+ my ($stylechar, $default) = @_;
+ local ($_) = $$cfg{'s'};
+ $stylechar =~ s/\W/\\$&/ or die;
+ return m/(\S*)$stylechar/ ? $1 !~ m/\!/ : $default;
+}
+
+#-------------------- mailing
+
+use vars qw($m_base $m_lastok @m_ok @m_fail
+ $m_info $m_time $m_lock $m_m);
+
+sub mail_zone_before () {
+ my (@s1,@s2);
+
+ $m_base= $$cfg{'maildir'}.'/'.$zone;
+ $m_lastok= '-';
+ @m_ok= ();
+ @m_fail= ();
+
+ for (;;) {
+ $m_lock= new IO::File "${m_base}_lock", O_RDWR|O_CREAT, 0600
+ or die "$quis: create lockfile ${m_base}_lock: $!\n";
+ if (!flock($m_lock, LOCK_EX|LOCK_NB)) {
+ <$m_lock> =~ m/^\d+ /;
+ die "$quis: $zone: concurrrency? - flock $&$!\n";
+ $m_lock->close;
+ return 0;
}
- },
- $zone,'soa',$uaddr);
- $lame= 'broken' if !$lame && !defined $origin;
- if ($lame) { zone_warning("$lame server $ww"); return; }
- push @{ $soas{$got} }, $why;
- ($rcode,@soa_addrs)= lookup($origin,'a','0');
- foreach $soa_addr (@soa_addrs) {
- $addr_is_ok{$soa_addr}= 1;
- push @to_check,
- $soa_addr,
- "addr for $origin, SOA ORIGIN from $why";
- }
-}
-
-sub zone_check_nsrrset ($$\%\%) {
- my ($uaddr,$ww, $delgs_or_auths,$glueless_ok) = @_;
- my (@s, $s, %s2g, @glue, $glue);
- dig::dig({
- if ($dig::type eq 'ns' && $dig::owner eq $zone) {
- $s2g{lc $dig::rdata} = [ ];
- } elsif ($dig::type eq 'a' && exists $s2g{$dig::owner}) {
- push @to_check,
- $dig::rdata,
- "glue for $dig::owner, from (eg) $why",
- \%auths, 0;
- $addr_is_ok{$dig::rdata}= 1 if $cfg->{'style'} eq 'stealth';
- push @{ $s2g{$dig::rdata} }, $dig::rdata;
+ (@s1= $m_lock->stat) or die "$quis: fstat ${m_base}_lock: $!\n";
+ (@s2= stat "${m_base}_lock") or
+ die "$quis: stat ${m_base}_lock: $!\n";
+ last if ($s1[0] eq $s2[0] && $s1[1] eq $s2[1]);
+ $m_lock->close;
+ }
+ (print $m_lock "$$ \n" and $m_lock->flush)
+ or die "$quis: write pid to ${m_base}_lock: $!\n";
+
+ if ($m_info= new IO::File "${m_base}_info", 'r') {
+ $!=0; $_= <$m_info>;
+ $_ =~ m/\n/ or die "$quis: read ${m_base}_info: $!\n";
+ m/^\d+ (\d+|-) ([0-9:]*) ([0-9:]*) / or
+ die "$quis: ${m_base}_info malformed\n";
+ $m_lastok= $1;
+ if ($domail ne 'first') {
+ if ($2 eq ':' && $3 eq ':') {
+ warn "$quis: $zone: mid/last run, but last".
+ "run already done, ignoring zone\n";
+ return 0;
+ }
+ @m_ok= split /\:/, $2;
+ @m_fail= split /\:/, $3;
}
- },
- $zone,'ns',$uaddr);
- @s= sort keys %s2g;
- foreach $s (@s) {
- @glue= @{ $s2g{$s} };
- if (!length @glue) {
- zone_warning("glueless NS $s, from $ww") unless $glueless_ok;
- next;
+ } elsif ($! != &ENOENT) {
+ die "$quis: open ${m_base}_info: $!\n";
+ } elsif ($domail ne 'first') {
+ warn "$quis: $zone: first run, but not --mail-first,".
+ " ignoring zone\n";
+ return 0;
+ }
+ if ($domail eq 'first') {
+ remove "${m_base}_history" or $!==&ENOENT
+ or die "$quis: remove ${m_base}_history: $!\n";
+ }
+ $progress_fh= $warn_fh= new IO::File "${m_base}_history",'a',0666
+ or die "$quis: open ${m_base}_history: $!\n";
+ $m_info= new IO::File "${m_base}_info.tmp",'w',0666
+ or die "$quis: open ${m_base}_info.tmp: $!\n";
+
+ $m_time= time;
+ progress(-1, "\n".('-'x70)."\n".ptime($m_time)."\n");
+ return 1;
+}
+
+sub mail_zone_after () {
+ if ($zone_warnings{$zone}) {
+ push @m_fail, $m_time;
+ progress(-1,"failed - $zone_warnings{$zone} warnings");
+ } else {
+ push @m_ok, $m_time;
+ $m_lastok= $m_time;
+ progress(-1,"everything is fine");
+ }
+ close $progress_fh or die "$quis: close ${m_base}_history: $!\n";
+ $progress_fh= $warn_fh= $stderr_fh;
+
+ if ($domail =~ m/^final/) {
+ if (100*@m_fail <= $$cfg{'mailmwarn'}*(@m_fail + @m_ok)) {
+ printf " %-40s ok\n", $zone or die "$quis: mail ok report: $!\n";
+ } elsif (zone_style('@',0)) {
+ printf " %-40s mail suppressed\n", $zone
+ or die "$quis: mail suppress report: $!\n";
+ } else {
+ mail_zone_mail();
}
- $glue= join ' ', sort @glue;
- push @{ $glue{$s}{$glue} }, $why;
+ } else {
+ printf " %-40s %d warns. OK %s Fail %s\n",
+ $zone,
+ defined $zone_warnings{$zone} ? $zone_warnings{$zone} : 0,
+ join(',', map { $_ - $m_time } @m_ok),
+ join(',', map { $_ - $m_time } @m_fail)
+ or die "$quis: checking progress report: $!\n";
}
- $s= join ' ', @s;
- push @{ $nsrrset_ref->{$s} }, $why;
+
+ @m_fail= @m_ok= ('','')
+ if $domail =~ m/^final/;
+
+ printf $m_info "%s %s %s %s \n",
+ $m_time, $m_lastok, join(':',@m_ok), join(':',@m_fail)
+ or die "$quis: write new ${m_base}_info: $!\n";
+ $m_info->close or die "$quis: close new ${m_base}_info: $!\n";
+ rename "${m_base}_info.tmp", "${m_base}_info"
+ or die "$quis: install new ${m_base}_info: $!\n";
+ $m_lock->close;
}
+
+sub pmail ($) {
+ print $m_m $_[0]
+ or die "$quis: write ${m_base}_mail: $!\n";
+}
+sub ptime ($) {
+ my ($time) = @_;
+ return gmtime($time)." GMT ($time)";
+}
+
+sub mail_zone_mail () {
+ my ($log, $zone_to, $zterr, $c, $r, $t, @soas);
+ $m_m= new IO::File "${m_base}_mail", 'w', 0666
+ or die "$quis: create ${m_base}_mail: $!\n";
+ $zone_to=''; $zterr='';
+ if (!zone_style("\$", $$cfg{'s'} !~ m/[ps]/)) {
+ eval {
+ ($r,@soas)= lookup($zone,'soa','0','problem-addr');
+ @soas==1 or die "multiple soas\n";
+ $soas[0] =~ m/^\S+ (\S.*\@\S+) [0-9 ]+$/ or
+ die "bad soa \`$_'\n";
+ $zone_to= $1;
+ };
+ $zterr= $@;
+ $zterr =~ s/\n$//;
+ }
+ pmail <<END
+From: zone checker <$$cfg{'admin'}>
+Subject: $zone - configuration problems report
+END
+;
+ pmail("To: ");
+ pmail("(testing!) ") if $domail ne 'final';
+ pmail("SOA MNAME for $zone <$zone_to>\nCC: ") if length($zone_to);
+ pmail($$cfg{'admin'}."\n\n");
+ pmail <<END
+You are receiving this mail because your email address is listed
+in the SOA (Start Of Authority) record for $zone
+in the DNS, which means you are supposedly the DNS administrator
+responsible for this zone. This report is generated automatically
+on behalf of $$cfg{'admin'}, who
+is the administrator for a server for the zone. Please contact
+them if you have any problem with this report.
+
+END
+if length $zone_to;
+ pmail <<END
+Sent to $$cfg{'admin'} since SOA MNAME unavailable:
+$zterr
+
+END
+if length $zterr;
+ pmail <<END
+The zone has had configuration errors or persistent operational
+problems during recent checks. See the logs below for details.
+
+Recent check history for $zone:
+END
+;
+ if ($m_lastok ne '-') {
+ pmail(" Last seen to be fine: ".ptime($m_lastok)."\n");
+ } else {
+ pmail(" No record of this zone ever being fine.\n");
+ }
+ for $t (@m_fail) {
+ pmail(" Zone had problems at: ".ptime($t)."\n");
+ }
+ for $t (@m_ok) {
+ pmail(" Everything in order at: ".ptime($t)."\n");
+ }
+ pmail("\n");
+ $log= new IO::File "${m_base}_history",'r'
+ or die "$quis: reopen ${m_base}_history: $!";
+ undef $/;
+ pmail($log->getline);
+ $/= "\n";
+ (!$log->error and $log->close)
+ or die "$quis: reread or close ${m_base}_log: $!\n";
+ $log->eof or die;
+ $m_m->close or die "$quis: close ${m_base}_mail: $!\n";
+ $m_m= new IO::File "${m_base}_mail"
+ or die "$quis: reopen ${m_base}_mail: $!";
+
+ defined($c= fork) or die "$quis: fork for mail: $!\n";
+ if (!$c) {
+ defined dup2($m_m->fileno, 0)
+ or die "$quis - sendmail: dup for stdin: $!\n";
+ exec (qw(/usr/sbin/sendmail -odb -oee -oi),
+ ($domail eq 'final' ? '-t' : $$cfg{'admin'}));
+ die "$quis - sendmail: exec: $!\n";
+ }
+ $m_m->close;
+ $!=0; $r= waitpid $c,0;
+ $r == $c or die "$quis: waitpid sendmail ($c): $r $!";
+ $? and warn "$quis: sendmail failed: $?\n";
+
+ printf " %-40s %s\n", $zone,
+ length $zone_to ? $zone_to : 'reporting to admin'
+ or die "$quis: write mailing report: $!\n";
+}
#-------------------- outputting
sub zone_output () {
- $output_contents{$$cfg{'output'}}.=
- sprintf(<<'END',
-zone "%s" {
- type %s;
- file "%s";
-};
-END
- $zone,
- $$cfg{'style'} eq 'primary' ? 'master' : 'slave',
- $$cfg{'file'});
+ my ($o,$m);
+
+ $o= "zone \"$zone\" {\n";
+ if ($$cfg{'s'} =~ m/p/) {
+ $o.= " type master;\n";
+ } else {
+ $o.= " type slave;\n".
+ " masters {\n";
+ foreach $m (@{ $$cfg{'servers'} }) { $o.= " $m;\n"; }
+ $o.= " };\n";
+ }
+ $o.= " file \"$$cfg{'file'}\";\n";
+ $o.= "};\n";
+ return $o;
}
+sub output_files () {
+ my ($fn,$ofn,$mfn,$l,$dir, $maxmode,$h,@to_install);
+
+ foreach $ofn (keys %output_contents) {
+ $fn= $ofn; $mfn= "output file $fn";
+ for (;;) {
+ if (!lstat $fn) {
+ $! == &ENOENT or die "$quis: stat $mfn:\n $!\n";
+ $maxmode= 0666;
+ last;
+ } elsif (-f _) {
+ $maxmode= (stat _)[2];
+ last;
+ } elsif (-l _) {
+ defined($l= readlink $fn)
+ or die "$quis: readlink $mfn:\n $!\n";
+ $dir= $fn =~ m,^.*/, ? $& : './';
+ $fn= "$dir$l" unless $l =~ m,^/,;
+ $mfn= "output file $fn (symlink target of $ofn)";
+ } else {
+ die "$quis: output file $mfn exists but is not a file".
+ " (or symlink to one)";
+ }
+ }
+ unlink "$fn.new" or $! == &ENOENT or
+ die "$quis: cannot clear out old .new version of $mfn:\n $!";
+ $h= new IO::File "$fn.new",'w',$maxmode
+ or die("$quis: create .new version of $mfn:\n $!");
+ print $h
+ "# generated by $quis, do not edit\n",
+ $output_contents{$ofn}
+ or die "$quis: write data to .new version of $mfn:\n $!";
+ $h->close
+ or die "$quis: close .new version of $mfn:\n $!";
+ push @to_install, $fn,$mfn;
+ }
+
+ while (($fn,$mfn, @to_install) = @to_install) {
+ rename "$fn.new",$fn
+ or die "$quis: install new version of $mfn:\n $!";
+ }
+}
#-------------------- general utilities
sub debug_dump ($) {
my ($vn);
- return unless $debug;
+ return unless $debug>1;
local $Data::Dumper::Terse=1;
foreach $vn (split /\s+/, $_[0]) {
print "$vn := ", eval "Dumper(\\$vn)";
print "D $_[0]\n";
}
-sub lookup ($$$) {
- my ($type,$domain,$okrcodes) = @_;
- my ($c,@result);
- defined($c= open ADH, "-|") or die "$0: fork adnshost:\n $!\n";
+sub has_suffix_of ($$) {
+ my ($whole,$suffix) = @_;
+ debug_trace("has_suffix_of $whole $suffix");
+ return 0 if length $whole < length $suffix;
+ return 0 if substr($whole, length($whole) - length($suffix)) ne $suffix;
+ debug_trace("has_suffix_of $whole $suffix YES");
+ return 1;
+}
+
+sub lookup ($$$$) {
+ my ($domain,$type,$okrcodes,$w) = @_;
+ my ($c,$h,@result);
+ debug_trace("lookup ==> (->$okrcodes) $domain $type");
+ $h= new IO::Handle;
+
+ defined($c= open $h, "-|") or die "$quis: fork adnshost:\n $!\n";
if (!$c) {
exec 'adnshost','-Fi','+Do','+Dt','+Dc','-Cf',"-t$type",
- '-',"$domain.";
- die "$0: exec adnshost:\n $!\n";
+ '-',"$domain";
+ die "$quis: exec adnshost:\n $!\n";
}
- @result= <ADH>;
+ @result= $h->getlines();
+ $h->error and die "$quis: read from adnshost:\n $!\n";
chomp @result;
- $!=0; close ADH;
- die "$0: lookup -t$type $domain $okrcodes failed $? $!\n"
- if $! or $?>6 or index($okrcodes,$?)<0;
+ $!=0; $h->close;
+ die "$quis: lookup -t$type $domain $okrcodes ($w) failed $? $! @result\n"
+ if $! or $?&255 or $?>1536 or index($okrcodes,$?>>8)<0;
+ debug_trace("lookup <== $? @result");
return ($?,@result);
}
-
-package dig;
-
-use vars $owner, $type, $rdata;
-
sub dig (&$$$) {
my ($eachrr, $qowner,$qtype,$qaddr) = @_;
# also pseudo-rr with type `flags:'
- my ($h,$inmid);
+ my ($h,$inmid,$irdata,$c,$digwhy);
local ($_);
+ debug_trace("dig ==> \@$qaddr $qowner $qtype");
+
$h= new IO::Handle;
- defined($c= open $h, "-|") or die "$0: fork dig:\n $!\n";
+ defined($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 "$0: exec dig:\n $!\n";
+ die "$quis: exec dig:\n $!\n";
}
$inmid='';
for (;;) {
if (!defined($_= $h->getline())) {
- $h->error() and die "$0: read from dig:\n $!\n";
+ $h->error() and die "$quis: read from dig:\n $!\n";
last;
}
chomp;
s/\;.*$//;
$_= $inmid.$_;
$inmid='';
- s/$/ \(/ unless s/\s*\)$//;
+ s/$/ \(/ unless s/\s*\)\s*$//;
}
- if (s/\s*\($//) { $inmid= $_; next; }
+ if (s/\s*\(\s*$//) { $inmid= $_; next; }
+ $digwhy= "dig $qowner $qtype $qaddr \`$_'";
if (m/^\;\; flags\:( [-0-9a-z ]+)\;/) {
- $owner=''; $type='flags:'; $rdata= "$1 ";
- { package main; &$dig::eachrr; };
+ $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.*)/) {
- $owner=$1; $type=$2; $rdata=$3;
- if ($type eq 'A') {
- $rdata =~ m/^[.0-9]$/ or die;
- } elsif ($type eq 'NS') {
- $rdata =~ m/^[-.0-9a-z]+$/ or die "bad nameserver $rdata ?";
- $rdata= lc $rdata;
- } elsif ($type eq 'SOA') {
- $rdata =~ m/^([-.0-9a-z]+)\s+.*\s+(\d+)(?:\s+\d\w+){4}$/
- or die "bad SOA $rdata ?";
- $rdata= (lc $1).$2;
+ } elsif (m/^([-.0-9a-z]+)\s+\d\w+\s+in\s+([a-z]+)\s+(\S.*)/i) {
+ $dig_owner=domain_canon($1,$digwhy); $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,$digwhy);
+ } elsif ($dig_type eq 'soa') {
+ $irdata =~ m/^([-.0-9a-z]+)\s+.*\s+(\d+)(?:\s+\d\w+){4}$/i
+ or die "bad SOA $irdata ?";
+ $dig_rdata= $2.' '.domain_canon($1,$digwhy);
} else {
- debug_trace("ignoring uknown RR type $rtype");
+ debug_trace("ignoring uknown RR type $dig_type");
next;
}
- { package mina; &$dig::eachrr; }
+ debug_trace("dig $dig_owner $dig_type $dig_rdata");
+ &$eachrr;
} else {
debug_trace("ignoring unknown dig output $_");
}
}
- $h->close or die $!;
-}
-
-__DATA__
-
-
-
-
-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 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-',$zone);
-
- @ok_sources= ($soa_origin_addr);
- $ok_sources_descr= "SOA ORIGIN $soa_origin [$soa_origin_addr]";
-
- 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]";
- }
- }
-
- for $server (@servers) {
- grep { $server eq $_ } @ok_sources
- or warn "secondarying from $server which is not ".
- "$ok_sources_desc\n";
- }
-
- 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";
- }
- }
- check_after_eval();
-
-
-
-# $superzone= $zone; $superzone =~ s/^[^\.]+\.//;
-# @super_ns= lookup('ns-',$zone);
- }
-
- eval {
-
- for $super_ns (@super_ns) {
- @deleg_ns= ();
- open DIG, "dig @$super_ns. -t ns +norecurse $zone."
- or die "$0: fork for dig:\n $!\n";
- while (<DIG>) {
-
-
- split /\n/, lookup("
-
- case "$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 $hostzone
- then
- checkhostout -val localhost
- fi
-done
-endfile
-
-
-chdir "$base/primary" or die "$0: chdir $base/primary:\n $!";
-beginfile('primary.zones');
-
-for $f (<*_db>) {
- $zone= $f; $zone =~ s/_db$//;
-
-
-for f in $zones
-do
- zone="`echo $f | sed -e 's/_db$//'`"
-END
-done
-endfile
-
-
-
-sub beginfile ($) {
- $currentfile= $_[0];
- $currentfile_opened= $install ? "$conf/$currentfile.new" : "/dev/null";
- open CFF, "> $toopen" or die "$0: begin $currentfile_opened:\n $!\n";
-}
-
-endfile () {
- close CFF or die "$0: close $currentfile_opened:\n $!\n";
- push @files, $currentfile;
-}
-
-sub installfiles () {
- return unless $install;
- chdir $conf or die "$0: chdir $conf:\n $!\n";
- for $f (@files) {
- rename "$f.new", $f or die "$0: install new $f:\n $!\n";
- }
-}
-
-warning () {
- echo >&2 "$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 $hostfirstwarn
- then
- warning "warnings from host:"
- hostfirstwarn=0
- fi
- echo >&2 "$hostout"
+ $h->close;
+ debug_trace("dig <== gave $?");
}
-progress () {
- if $progress
- then
- echo -n "$zone $style " >&2
- echo -ne '\r' >&2
- fi
+sub domain_canon ($$) {
+ my ($i,$w) = @_;
+ $i =~ s/(.)\.$/$1/;
+ return '.' if $i eq '.';
+ die "domain $i ($w) ?" unless $i =~ m/^[0-9a-z]/i;
+ return lc $i;
}
-
-myname=''
-
-if [ $warnings != 0 ]
-then
- echo >&2 "$warnings warnings "
-fi
-
-installfiles
~ian / chiark-utils.git / blobdiff