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#!/usr/bin/perl
# save_record.cgi
# Adds or updates a record of some type
require './bind8-lib.pl';
&ReadParse();
&error_setup($text{'edit_err'});
$zone = &get_zone_name_or_error($in{'zone'}, $in{'view'});
$dom = $zone->{'name'};
@zl = &list_zone_names();
$reverse = ($in{'origin'} =~ /\.in-addr\.arpa/i ||
$in{'origin'} =~ /\.$ipv6revzone/i);
&can_edit_zone($zone) || &error($text{'recs_ecannot'});
&can_edit_type($in{'type'}) ||
&error($text{'recs_ecannottype'});
$access{'ro'} && &error($text{'master_ero'});
&lock_file(&make_chroot(&absolute_path($zone->{'file'})));
# Read the existing records
if ($config{'largezones'} && !defined($in{'num'})) {
# Adding to a large zone, so only read the SOA
@recs = &read_zone_file($in{'file'}, $in{'origin'}, undef, 1);
}
else {
# Read all records
@recs = &read_zone_file($in{'file'}, $in{'origin'});
}
# get the old record if needed
if (defined($in{'num'})) {
$r = &find_record_by_id(\@recs, $in{'id'}, $in{'num'});
$r || &error($text{'edit_egone'});
}
# check for deletion
if ($in{'delete'}) {
# Check if confirmation is needed
if (!$in{'confirm'} && $config{'confirm_rec'}) {
&ui_print_header(undef, $text{'edit_dtitle'}, "");
print &ui_confirmation_form("save_record.cgi",
&text('edit_rusure', "<tt>$r->{'name'}</tt>",
"<tt>$in{'origin'}</tt>"),
[ map { [ $_, $in{$_} ] } (keys %in) ],
[ [ 'confirm', $text{'edit_dok'} ] ],
);
&ui_print_footer("edit_recs.cgi?zone=$in{'zone'}&view=$in{'view'}&type=$in{'redirtype'}&sort=$in{'sort'}", $text{'recs_return'});
}
else {
# Delete the record
&lock_file(&make_chroot($r->{'file'}));
&delete_record($r->{'file'}, $r);
&bump_soa_record($in{'file'}, \@recs);
&sign_dnssec_zone_if_key($zone, \@recs);
# Update reverse
$fulloldvalue0 = &convert_to_absolute(
$in{'oldvalue0'}, $in{'origin'});
$fulloldname = &convert_to_absolute(
$in{'oldname'}, $in{'origin'});
($orevconf, $orevfile, $orevrec) = &find_reverse($in{'oldvalue0'},
$in{'view'});
if ($in{'rev'} && $orevrec && &can_edit_reverse($orevconf) &&
$fulloldname eq $orevrec->{'values'}->[0] &&
($in{'type'} eq "A" &&
$in{'oldvalue0'} eq &arpa_to_ip($orevrec->{'name'}) ||
$in{'type'} eq "AAAA" &&
&expandall_ip6($in{'oldvalue0'}) eq &expandall_ip6(&ip6int_to_net($orevrec->{'name'})))) {
&lock_file(&make_chroot($orevrec->{'file'}));
&delete_record($orevrec->{'file'} , $orevrec);
&lock_file(&make_chroot($orevfile));
@orrecs = &read_zone_file($orevfile, $orevconf->{'name'});
&bump_soa_record($orevfile, \@orrecs);
&sign_dnssec_zone_if_key($orevconf, \@orrecs);
}
# Update forward
local($ipv6 = ($fulloldvalue0 =~ /\.$ipv6revzone/i));
($ofwdconf, $ofwdfile, $ofwdrec) = &find_forward($fulloldvalue0, $ipv6);
if ($in{'fwd'} && $ofwdrec && &can_edit_zone($ofwdconf) &&
(!$ipv6 && &arpa_to_ip($in{'oldname'}) eq $ofwdrec->{'values'}->[0] ||
$ipv6 && &expandall_ip6(&ip6int_to_net($in{'oldname'})) eq &expandall_ip6($ofwdrec->{'values'}->[0])) &&
$fulloldvalue0 eq $ofwdrec->{'name'}) {
&lock_file(&make_chroot($ofwdrec->{'file'}));
&delete_record($ofwdrec->{'file'}, $ofwdrec);
&lock_file(&make_chroot($ofwdfile));
@ofrecs = &read_zone_file($ofwdfile, $ofwdconf->{'name'});
&bump_soa_record($ofwdfile, \@ofrecs);
&sign_dnssec_zone_if_key($ofwdconf, \@ofrecs);
}
&redirect("edit_recs.cgi?zone=$in{'zone'}&view=$in{'view'}&type=$in{'redirtype'}&sort=$in{'sort'}");
&unlock_all_files();
&webmin_log('delete', 'record', $in{'origin'}, $r);
}
exit;
}
# Create values string based on inputs
if (!$in{'ttl_def'}) {
$in{'ttl'} =~ /^\d+$/ ||
&error(&text('edit_ettl', $in{'ttl'}));
$ttl = $in{'ttl'}.$in{'ttlunit'};
}
$vals = $in{'value0'};
for($i=1; defined($in{"value$i"}); $i++) {
$vals .= " ".$in{"value$i"};
}
$vals =~ s/^\s+//;
$vals =~ s/\s+$//;
if ($in{'type'} eq "PTR" && $reverse) {
# a reverse address
local($ipv4);
($ipv4 = $in{'origin'} =~ /in-addr\.arpa/i) ||
$in{'origin'} =~ /\.$ipv6revzone/i ||
&error(&text('edit_eip', $in{'name'}));
if ($ipv4) {
if ($in{'name'} =~ /^\d+$/) {
$in{'name'} = &arpa_to_ip($in{'origin'}).".".$in{'name'};
}
&check_ipaddress($in{'name'}) ||
($in{'name'} =~ /^(.*)\.(\d+)$/ && &check_ipaddress("$1")) ||
($in{'name'} =~ /^(.*)\.(\d+)$/ && $1 eq &arpa_to_ip($in{'origin'})) ||
&error(&text('edit_eip', $in{'name'}));
$name = &ip_to_arpa($in{'name'});
}
else {
&check_ip6address($in{'name'}) ||
&error(&text('edit_eip6', $in{'name'}));
$name = &net_to_ip6int($in{'name'});
}
&valname($in{'value0'}) ||
&error(&text('edit_ehost', $vals[0]));
if ($in{'value0'} !~ /\.$/) { $vals .= "."; }
}
else {
# some other kind of record
$in{'name'} eq "" || $in{'name'} eq "@" || &valnamewild($in{'name'}) ||
&error(&text('edit_ename', $in{'name'}));
if ($in{'type'} eq "A") {
&check_ipaddress($vals) ||
&error(&text('edit_eip', $vals));
if (!$access{'multiple'}) {
# Is this address already in use? Search all domains
# to find out..
foreach $z (@zl) {
next if ($z->{'type'} ne "master");
next if ($z->{'name'} =~ /in-addr\.arpa/i);
$file = $z->{'file'};
@frecs = &read_zone_file($file, $z->{'name'});
foreach $fr (@frecs) {
if ($fr->{'type'} eq "A" &&
$fr->{'values'}->[0] eq $vals &&
$fr->{'name'} ne $r->{'name'}) {
&error(&text('edit_edupip',
$vals));
}
}
}
}
}
elsif ($in{'type'} eq "AAAA") {
&check_ip6address($vals) ||
&error(&text('edit_eip6', $vals));
if (!$access{'multiple'}) {
# Is this address already in use? Search all domains
# to find out..
foreach $z (@zl) {
next if ($z->{'type'} ne "master");
next if ($z->{'name'} =~ /\.$ipv6revzone/i);
$file = $z->{'file'};
@frecs = &read_zone_file($file, $z->{'name'});
foreach $fr (@frecs) {
if ($fr->{'type'} eq "AAAA" &&
&expandall_ip6($fr->{'values'}->[0]) eq &expandall_ip6($vals) &&
$fr->{'name'} ne $r->{'name'}) {
&error(&text('edit_edupip',
$vals));
}
}
}
}
}
elsif ($in{'type'} eq "NS") {
&valname($vals) ||
&error(&text('edit_ens', $vals));
if ($vals =~ /\.\Q$in{'origin'}\E$/) {
# Make absolute
$vals .= ".";
}
}
elsif ($in{'type'} eq "CNAME") {
&valname($vals) || $vals eq '@' ||
&error(&text('edit_ecname', $vals));
if ($vals =~ /\.\Q$in{'origin'}\E$/) {
$vals .= ".";
}
}
elsif ($in{'type'} eq "MX") {
&valname($in{'value1'}) ||
&error(&text('edit_emx', $in{'value1'}));
$in{'value0'} =~ /^\d+$/ ||
&error(&text('edit_epri', $in{'value0'}));
if ($vals =~ /\.\Q$in{'origin'}\E$/) {
$vals .= ".";
}
}
elsif ($in{'type'} eq "HINFO") {
$in{'value0'} =~ /\S/ ||
&error($text{'edit_ehard'});
$in{'value1'} =~ /\S/ ||
&error($text{'edit_eos'});
$in{'value0'} = "\"$in{'value0'}\"" if ($in{'value0'} =~ /\s/);
$in{'value1'} = "\"$in{'value1'}\"" if ($in{'value1'} =~ /\s/);
$vals = $in{'value0'}." ".$in{'value1'};
}
elsif ($in{'type'} eq "TXT") {
$fullvals = $in{'value0'};
$fullvals =~ s/\r//g;
$fullvals =~ s/\n/ /g;
$fullvals =~ s/((?:^|[^\\])(?:\\\\)*)[\"]/$1\\\"/g;
@splitvals = ( );
while($fullvals) {
push(@splitvals, substr($fullvals, 0, 255));
$fullvals = substr($fullvals, 255);
}
$vals = join(" ", map { "\"$_\"" } @splitvals);
}
elsif ($in{'type'} eq "WKS") {
&check_ipaddress($in{'value0'}) ||
&error(&text('edit_eip', $in{'value0'}));
if (!$in{'value2'}) {
&error($text{'edit_eserv'});
}
@ws = split(/[\r\n]+|\s+/, $in{'value2'});
$vals = "$in{'value0'} $in{'value1'} (";
foreach $ws (@ws) {
$ws =~ /^[a-z]([\w\-]*\w)?$/i ||
&error(&text('edit_ebadserv', $ws));
$vals .= "\n\t\t\t\t\t$ws";
}
$vals .= " )";
}
elsif ($in{'type'} eq "RP") {
if (!$in{'value0'}) {
$in{'value0'} = ".";
}
elsif (!&valemail($in{'value0'})) {
&error(&text('edit_eemail', $in{'value0'}));
}
&valname($in{'value1'}) ||
&error(&text('edit_etxt', $in{'value1'}));
$in{'value0'} = &email_to_dotted($in{'value0'});
$vals = "$in{'value0'} $in{'value1'}";
}
elsif ($in{'type'} eq "LOC") {
$in{'value0'} =~ /\S/ || &error($text{'edit_eloc'});
}
elsif ($in{'type'} eq 'SRV') {
$in{'serv'} =~ /^[A-Za-z0-9\-\_]+$/ ||
&error(&text('edit_eserv2', $in{'serv'}));
$in{'name'} = join(".", "_".$in{'serv'}, "_".$in{'proto'},
$in{'name'} ? ( $in{'name'} ) : ( ));
$in{'value0'} =~ /^\d+$/ ||
&error(text('edit_epri', $in{'value0'}));
$in{'value1'} =~ /^\d+$/ ||
&error(text('edit_eweight', $in{'value1'}));
$in{'value2'} =~ /^\d+$/ ||
&error(text('edit_eport', $in{'value2'}));
&valname($in{'value3'}) ||
&error(&text('edit_etarget', $in{'value3'}));
}
elsif ($in{'type'} eq 'KEY') {
$in{'value0'} =~ /^(\d+|0x[0-9a-f]+={0,2})$/i ||
&error(text('edit_eflags', $in{'value0'}));
$in{'value1'} =~ /^\d+$/ ||
&error(text('edit_eproto', $in{'value1'}));
$in{'value2'} =~ /^\d+$/ ||
&error(text('edit_ealg', $in{'value2'}));
$in{'value3'} =~ s/[ \r\n]//g;
$in{'value3'} =~ /^[a-zA-Z0-9\/\+]+$/ ||
&error(text('edit_ekey'));
$vals = join(" ", $in{'value0'}, $in{'value1'},
$in{'value2'}, $in{'value3'});
}
elsif ($in{'type'} eq 'PTR') {
$vals = $in{'value0'};
&valname($vals) ||
&error(&text('edit_eptr', $vals));
}
elsif ($in{'type'} eq 'SPF') {
# For SPF records, build the SPF string from the inputs
$spf = $r ? &parse_spf(@{$r->{'values'}}) : { };
$spf->{'a'} = $in{'spfa'};
$spf->{'mx'} = $in{'spfmx'};
$spf->{'ptr'} = $in{'spfptr'};
$spf->{'a:'} = [ split(/\s+/, $in{'spfas'}) ];
foreach my $a (@{$spf->{'a:'}}) {
&to_ipaddress($a) || &error(&text('edit_espfa', $a));
}
$spf->{'mx:'} = [ split(/\s+/, $in{'spfmxs'}) ];
foreach my $mx (@{$spf->{'mx:'}}) {
&valname($mx) || &error(&text('edit_espfmx', $mx));
}
@{$spf->{'mx:'}} <= 10 ||
&error(&text('edit_espfmxmax', 10));
$spf->{'ip4:'} = [ split(/\s+/, $in{'spfip4s'}) ];
foreach my $ip (@{$spf->{'ip4:'}}) {
&check_ipaddress($ip) ||
($ip =~ /^(\S+)\/\d+$/ && &check_ipaddress($1)) ||
&error(&text('edit_espfip', $ip));
}
if (&supports_ipv6()) {
$spf->{'ip6:'} = [ split(/\s+/, $in{'spfip6s'}) ];
foreach my $ip (@{$spf->{'ip6:'}}) {
&check_ip6address($ip) ||
($ip =~ /^(\S+)\/\d+$/ &&
&check_ip6address($1)) ||
&error(&text('edit_espfip6', $ip));
}
}
$spf->{'include:'} = [ split(/\s+/, $in{'spfincludes'}) ];
foreach my $i (@{$spf->{'include:'}}) {
&valname($i) || &error(&text('edit_espfinclude', $i));
}
$spf->{'all'} = $in{'spfall'};
foreach my $m ('redirect', 'exp') {
if ($in{'spf'.$m.'_def'}) {
delete($spf->{$m});
}
else {
&valname($in{'spf'.$m}) ||
&error(&text('edit_espf'.$m,
$in{'spf'.$m}));
$spf->{$m} = $in{'spf'.$m};
}
}
$vals = "\"".&join_spf($spf)."\"";
}
else {
# For other record types, just save the lines
$in{'values'} =~ s/\r//g;
local @vlines = split(/\n/, $in{'values'});
$vals = join(" ",map { $_ =~ /^\S+$/ ? $_ : "\"$_\"" } @vlines);
}
$fullname = &convert_to_absolute($in{'name'}, $in{'origin'});
if ($config{'short_names'}) {
$name = $in{'name'};
}
else {
$name = $fullname;
}
}
# check for CNAME collision
if (!defined($in{'num'}) || $name ne $r->{'name'}) {
foreach $cr (@recs) {
if ($cr->{'name'} eq $name) {
if ($in{'type'} eq CNAME) {
&error($text{'edit_ecname1'});
}
elsif ($cr->{'type'} eq 'CNAME') {
&error($text{'edit_ecname2'});
}
}
}
}
if ($in{'new'}) {
# adding a new record
($revconf, $revfile, $revrec) = &find_reverse($in{'value0'},
$in{'view'});
if ($in{'rev'} && $config{'rev_must'} && !$revconf) {
# Reverse zone must exist, but doesn't
&error($text{'edit_erevmust'});
}
&create_record($in{'file'}, $name, $ttl, "IN", $in{'type'}, $vals,
$in{'comment'});
$r = { 'name' => $name, 'ttl' => $ttl, 'class' => 'IN',
'type' => $in{'type'}, 'values' => [ split(/\s+/, $vals) ],
'comment' => $in{'comment'} };
if ($in{'rev'} && $revconf && &can_edit_reverse($revconf) &&
$in{'value0'} !~ /\*/) {
local $rname = $in{'type'} eq "A" ? &ip_to_arpa($in{'value0'})
: &net_to_ip6int($in{'value0'});
if ($revrec && $in{'rev'} == 2) {
# Upate the existing reverse for the domain
&lock_file(&make_chroot($revrec->{'file'}));
&modify_record($revrec->{'file'}, $revrec,
$rname, $revrec->{'ttl'}, "IN", "PTR",
$fullname);
@rrecs = &read_zone_file($revfile, $revconf->{'name'});
&bump_soa_record($revfile, \@rrecs);
&sign_dnssec_zone_if_key($revconf, \@rrecs);
}
elsif (!$revrec) {
# Add a reverse record if we are the master for the
# reverse domain, and if there is not already a
# reverse record for the address.
&lock_file(&make_chroot($revfile));
&create_record($revfile, $rname,
$ttl, "IN", "PTR", $fullname);
@rrecs = &read_zone_file($revfile, $revconf->{'name'});
&bump_soa_record($revfile, \@rrecs);
&sign_dnssec_zone_if_key($revconf, \@rrecs);
}
}
($fwdconf, $fwdfile, $fwdrec) = &find_forward($vals, $vals =~ /\.$ipv6revzone/i);
if ($in{'fwd'} && $fwdconf && !$fwdrec &&
&can_edit_zone($fwdconf)) {
# Add a forward record if we are the master for the forward
# domain, and if there is not already an A record
# for the address
local($rtype);
if (&check_ipaddress($in{'name'})) {
$rtype = "A";
}
elsif ($config{'support_aaaa'} &&
&check_ip6address($in{'name'})) {
$rtype = "AAAA";
}
if ($rtype) {
&lock_file(&make_chroot($fwdfile));
&create_record($fwdfile, $vals,
$ttl, "IN", $rtype, $in{'name'});
@frecs = &read_zone_file($fwdfile, $fwdconf->{'name'});
&bump_soa_record($fwdfile, \@frecs);
&sign_dnssec_zone_if_key($fwdconf, \@frecs);
}
}
}
else {
# update an existing record
$fulloldvalue0 = &convert_to_absolute($in{'oldvalue0'}, $in{'origin'});
$fulloldname = &convert_to_absolute($in{'oldname'}, $in{'origin'});
($orevconf, $orevfile, $orevrec) = &find_reverse($in{'oldvalue0'},
$in{'view'});
($revconf, $revfile, $revrec) = &find_reverse($in{'value0'},
$in{'view'});
if ($in{'rev'} && $config{'rev_must'} && !$revconf) {
# Reverse zone must exist, but doesn't
&error($text{'edit_erevmust'});
}
&lock_file(&make_chroot($r->{'file'}));
&modify_record($r->{'file'}, $r, $name, $ttl,
"IN", $in{'type'}, $vals, $in{'comment'});
if ($in{'rev'} && $orevrec && &can_edit_reverse($orevconf) &&
$fulloldname eq $orevrec->{'values'}->[0] &&
($in{'type'} eq "A" &&
$in{'oldvalue0'} eq &arpa_to_ip($orevrec->{'name'}) ||
$in{'type'} eq "AAAA" &&
&expandall_ip6($in{'oldvalue0'}) eq &expandall_ip6(&ip6int_to_net($orevrec->{'name'})))) {
# Updating the reverse record. Either the name, address
# or both may have changed. Furthermore, the reverse record
# may now be in a different file!
&lock_file(&make_chroot($orevfile));
&lock_file(&make_chroot($revfile));
@orrecs = &read_zone_file($orevfile, $orevconf->{'name'});
@rrecs = &read_zone_file($revfile, $revconf->{'name'});
if ($revconf eq $orevconf && &can_edit_reverse($revconf)) {
# old and new in the same file
&modify_record($orevrec->{'file'} , $orevrec,
&net_to_ip6int(&ip_to_arpa($in{'value0'})),
$orevrec->{'ttl'}, "IN", "PTR", $fullname,
$in{'comment'});
&bump_soa_record($orevfile, \@orrecs);
&sign_dnssec_zone_if_key($orevconf, \@orrecs);
}
elsif ($revconf && &can_edit_reverse($revconf)) {
# old and new in different files
&delete_record($orevrec->{'file'} , $orevrec);
&create_record($revfile, &net_to_ip6int(&ip_to_arpa($in{'value0'})),
$orevrec->{'ttl'}, "IN", "PTR", $fullname,
$in{'comment'});
&bump_soa_record($orevfile, \@orrecs);
&bump_soa_record($revfile, \@rrecs);
&sign_dnssec_zone_if_key($orevconf, \@orrecs);
&sign_dnssec_zone_if_key($revconf, \@rrecs);
}
else {
# we don't handle the new reverse domain.. lose the
# reverse record
&delete_record($orevrec->{'file'}, $orevrec);
&bump_soa_record($orevfile, \@orrecs);
&sign_dnssec_zone_if_key($orevconf, \@orrecs);
}
}
elsif ($in{'rev'} && !$orevrec && $revconf && !$revrec &&
&can_edit_reverse($revconf)) {
# we don't handle the old reverse domain but handle the new
# one.. create a new reverse record
&lock_file(&make_chroot($revfile));
@rrecs = &read_zone_file($revfile, $revconf->{'name'});
&create_record($revfile, &net_to_ip6int(&ip_to_arpa($in{'value0'})),
$ttl, "IN", "PTR", $fullname, $in{'comment'});
&bump_soa_record($revfile, \@rrecs);
&sign_dnssec_zone_if_key($revconf, \@rrecs);
}
local($ipv6 = ($in{'value0'} =~ /\.$ipv6revzone/i));
($ofwdconf, $ofwdfile, $ofwdrec) = &find_forward($fulloldvalue0, $ipv6);
($fwdconf, $fwdfile, $fwdrec) = &find_forward($in{'value0'}, $ipv6);
if ($in{'fwd'} && $ofwdrec && &can_edit_zone($ofwdconf) &&
&expandall_ip6(&ip6int_to_net(&arpa_to_ip($in{'oldname'}))) eq
&expandall_ip6($ofwdrec->{'values'}->[0]) &&
$fulloldvalue0 eq $ofwdrec->{'name'}) {
# Updating the forward record
&lock_file(&make_chroot($ofwdfile));
&lock_file(&make_chroot($fwdfile));
@ofrecs = &read_zone_file($ofwdfile, $ofwdconf->{'name'});
@frecs = &read_zone_file($fwdfile, $fwdconf->{'name'});
if ($fwdconf eq $ofwdconf &&
&can_edit_zone($fwdconf)) {
# old and new are in the same file
&modify_record($ofwdrec->{'file'} , $ofwdrec, $vals,
$ofwdrec->{'ttl'}, "IN",
$ipv6 ? "AAAA" : "A",
$in{'name'}, $in{'comment'});
&bump_soa_record($ofwdfile, \@ofrecs);
&sign_dnssec_zone_if_key($ofwdconf, \@ofrecs);
}
elsif ($fwdconf && &can_edit_zone($fwdconf)) {
# old and new in different files
&delete_record($ofwdrec->{'file'} , $ofwdrec);
if (!ipv6 || $config{'support_aaaa'}) {
&create_record($fwdfile, $vals, $ofwdrec->{'ttl'},
"IN", $ipv6 ? "AAAA" : "A",
$in{'name'}, $in{'comment'});
&bump_soa_record($fwdfile, \@frecs);
&sign_dnssec_zone_if_key($fwdconf, \@frecs);
}
&bump_soa_record($ofwdfile, \@ofrecs);
&sign_dnssec_zone_if_key($ofwdconf, \@ofrecs);
}
else {
# lose the forward because it has been moved to
# a zone not handled by this server
&delete_record($ofwdrec->{'file'} , $ofwdrec);
&bump_soa_record($ofwdfile, \@ofrecs);
&sign_dnssec_zone_if_key($ofwdconf, \@ofrecs);
}
}
}
&bump_soa_record($in{'file'}, \@recs);
&sign_dnssec_zone_if_key($zone, \@recs);
&unlock_all_files();
$r->{'newvalues'} = $vals;
&webmin_log($in{'new'} ? 'create' : 'modify', 'record', $in{'origin'}, $r);
&redirect("edit_recs.cgi?zone=$in{'zone'}&view=$in{'view'}&".
"type=$in{'redirtype'}&sort=$in{'sort'}");
# valname(name)
sub valname
{
return valdnsname($_[0], 0, $in{'origin'});
}
# valnamewild(name)
sub valnamewild
{
return valdnsname($_[0], 1, $in{'origin'});
}
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