Viewing file:  save_record.cgi (8.87 KB) -rwxr-xr-x
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#!/usr/bin/perl
# save_record.cgi
# Adds or updates a record of some type
require './dns-lib.pl';
&ReadParse();
%access = &get_module_acl();
&can_edit_zone(\%access, $in{'origin'}) ||
&error("You are not allowed to edit records in this zone");
&lock_file($in{'file'});
@recs = &read_zone_file($in{'file'}, $in{'origin'});
$whatfailed = "Failed to save record";
# get the old record if needed
$r = $recs[$in{'num'}] if (defined($in{'num'}));
# check for deletion
if ($in{'delete'}) {
&lock_file($r->{'file'});
&delete_record($r->{'file'}, $r);
&bump_soa_record($in{'file'}, \@recs);
($orevconf, $orevfile, $orevrec) = &find_reverse($in{'oldvalue0'});
if ($in{'rev'} && $orevrec && &can_edit_reverse($orevconf) &&
$in{'oldname'} eq $orevrec->{'values'}->[0] &&
$in{'oldvalue0'} eq &arpa_to_ip($orevrec->{'name'})) {
&lock_file($orevrec->{'file'});
&delete_record($orevrec->{'file'} , $orevrec);
&lock_file($orevfile);
@orrecs = &read_zone_file(
$orevfile, $orevconf->{'values'}->[0]);
&bump_soa_record($orevfile, \@orrecs);
}
($ofwdconf, $ofwdfile, $ofwdrec) = &find_forward($in{'oldvalue0'});
if ($in{'fwd'} && $ofwdrec &&
&can_edit_zone($ofwdconf->{'values'}->[0]) &&
&arpa_to_ip($in{'oldname'}) eq $ofwdrec->{'values'}->[0] &&
$in{'oldvalue0'} eq $ofwdrec->{'name'}) {
&lock_file($ofwdrec->{'file'});
&delete_record($ofwdrec->{'file'}, $ofwdrec);
&lock_file($ofwdfile);
@ofrecs = &read_zone_file($ofwdfile,$ofwdconf->{'values'}->[0]);
&bump_soa_record($ofwdfile, \@ofrecs);
}
&redirect("edit_recs.cgi?index=$in{'index'}&type=$in{'type'}");
&unlock_all_files();
&webmin_log('delete', 'record', $in{'origin'}, $r);
exit;
}
# parse inputs
if (!$in{'ttl_def'}) {
$in{'ttl'} =~ /^\d+$/ ||
&error("'$in{'ttl'}' is not a valid time-to-live");
$ttl = $in{'ttl'};
}
$vals = $in{'value0'};
for($i=1; defined($in{"value$i"}); $i++) {
$vals .= " ".$in{"value$i"};
}
if ($in{'type'} eq "PTR") {
# a reverse address
&check_ipaddress($in{'name'}) ||
&error("'$in{'name'}' is not a valid IP address");
$name = &ip_to_arpa($in{'name'});
&valname($in{'value0'}) ||
&error("'$vals[0]' is not a valid hostname");
if ($in{'value0'} !~ /\.$/) { $vals .= "."; }
}
else {
# some other kind of record
$in{'name'} eq "" || &valname($in{'name'}) ||
&error("'$in{'name'}' is not a valid ",
lc($code_map{$in{'type'}})," record name");
if ($in{'type'} eq "A") {
&check_ipaddress($vals) ||
&error("'$vals' is not a valid IP address");
if (!$access{'multiple'}) {
$conf = &get_config();
@zl = &find_config("primary", $conf);
foreach $z (@zl) {
$file = $z->{'values'}->[1];
@frecs = &read_zone_file($z->{'values'}->[1],
$z->{'values'}->[0]);
foreach $fr (@frecs) {
if ($fr->{'type'} eq "A" &&
$fr->{'values'}->[0] eq $vals &&
$fr->{'name'} ne $r->{'name'}) {
&error("An address record for ",
"$vals already exists");
}
}
}
}
}
elsif ($in{'type'} eq "NS") {
&valname($vals) ||
&error("'$vals' is not a valid nameserver");
}
elsif ($in{'type'} eq "CNAME") {
&valname($vals) ||
&error("'$vals' is not a valid alias target");
}
elsif ($in{'type'} eq "MX") {
$in{'value1'} =~ /^[A-z0-9\-\.\*]+$/ ||
&error("'$in{'value1'}' is not a valid mail server");
$in{'value0'} =~ /^\d+$/ ||
&error("'$in{'value0'}' is not a valid priority");
}
elsif ($in{'type'} eq "HINFO") {
$in{'value0'} =~ /^\S+$/ ||
&error("'$in{'value0'}' is not a valid hardware type");
$in{'value1'} =~ /^\S+$/ ||
&error("'$in{'value1'}' is not a valid OS type");
}
elsif ($in{'type'} eq "TXT") {
$vals = "\"$in{'value0'}\"";
}
elsif ($in{'type'} eq "WKS") {
&check_ipaddress($in{'value0'}) ||
&error("'$in{'value0'}' is not a valid IP address");
if (!$in{'value2'}) {
&error("You did not enter any well known services");
}
@ws = split(/[\r\n]+/, $in{'value2'});
$vals = "$in{'value0'} $in{'value1'} (";
foreach $ws (@ws) { $vals .= "\n\t\t\t\t\t$ws"; }
$vals .= " )";
}
elsif ($in{'type'} eq "RP") {
$in{'value0'} =~ /^(\S+)\@(\S+)$/ ||
&error("'$in{'value0'}' is not a valid email address");
&valname($in{'value1'}) ||
&error("'$in{'value1'}' is not a valid text record");
$in{'value0'} =~ s/\@/\./g;
$vals = "$in{'value0'} $in{'value1'}";
}
$name = $in{'name'} eq "" ? "$in{'origin'}." :
$in{'name'} !~ /\.$/ ? "$in{'name'}.$in{'origin'}." :
$in{'name'};
}
if ($in{'new'}) {
# just adding a new record
&create_record($in{'file'}, $name, $ttl, "IN", $in{'type'}, $vals);
$r = { 'name' => $name, 'ttl' => $ttl, 'class' => 'IN',
'type' => $in{'type'}, 'values' => [ split(/\s+/, $vals) ] };
($revconf, $revfile, $revrec) = &find_reverse($in{'value0'});
if ($in{'rev'} && $revconf && !$revrec && &can_edit_reverse($revconf)) {
# Add a reverse record if we are the master for the reverse
# domain, and if there is not already a reverse record
# for the address.
&lock_file($revfile);
&create_record($revfile,
&ip_to_arpa($in{'value0'}), $ttl,
"IN", "PTR", $name);
@rrecs = &read_zone_file($revfile, $revconf->{'values'}->[0]);
&bump_soa_record($revfile, \@rrecs);
}
($fwdconf, $fwdfile, $fwdrec) = &find_forward($vals);
if ($in{'fwd'} && $fwdconf && !$fwdrec &&
&can_edit_zone($fwdconf->{'values'}->[0])) {
# Add a forward record if we are the master for the forward
# domain, and if there is not already an A record
# for the address
&lock_file($fwdfile);
&create_record($fwdfile, $vals,
$ttl, "IN", "A", $in{'name'});
@frecs = &read_zone_file($fwdfile, $fwdconf->{'values'}->[0]);
&bump_soa_record($fwdfile, \@frecs);
}
}
else {
# updating an existing record
($orevconf, $orevfile, $orevrec) = &find_reverse($in{'oldvalue0'});
($revconf, $revfile, $revrec) = &find_reverse($in{'value0'});
&lock_file($r->{'file'});
&modify_record($r->{'file'}, $r, $name, $ttl,
"IN", $in{'type'},$vals);
if ($in{'rev'} && $orevrec && &can_edit_reverse($orevconf) &&
$in{'oldname'} eq $orevrec->{'values'}->[0] &&
$in{'oldvalue0'} eq &arpa_to_ip($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($orevfile);
&lock_file($revfile);
@orrecs = &read_zone_file($orevfile,$orevconf->{'values'}->[0]);
@rrecs = &read_zone_file($revfile, $revconf->{'values'}->[0]);
if ($revconf eq $orevconf && &can_edit_reverse($revconf)) {
# old and new in the same file
&modify_record($orevrec->{'file'} , $orevrec,
&ip_to_arpa($in{'value0'}),
$orevrec->{'ttl'}, "IN", "PTR", $name);
&bump_soa_record($orevfile, \@orrecs);
}
elsif ($revconf && &can_edit_reverse($revconf)) {
# old and new in different files
&delete_record($orevrec->{'file'} , $orevrec);
&create_record($revfile, &ip_to_arpa($in{'value0'}),
$orevrec->{'ttl'}, "IN", "PTR", $name);
&bump_soa_record($orevfile, \@orrecs);
&bump_soa_record($revfile, \@rrecs);
}
else {
# we don't handle the new reverse domain.. lose the
# reverse record
&delete_record($orevrec->{'file'}, $orevrec);
&bump_soa_record($orevfile, \@orrecs);
}
}
($ofwdconf, $ofwdfile, $ofwdrec) = &find_forward($in{'oldvalue0'});
($fwdconf, $fwdfile, $fwdrec) = &find_forward($in{'value0'});
if ($in{'fwd'} && $ofwdrec &&
&can_edit_zone($ofwdconf->{'values'}->[0]) &&
&arpa_to_ip($in{'oldname'}) eq $ofwdrec->{'values'}->[0] &&
$in{'oldvalue0'} eq $ofwdrec->{'name'}) {
# Updating the forward record
&lock_file($ofwdfile);
&lock_file($fwdfile);
@ofrecs = &read_zone_file($ofwdfile,$ofwdconf->{'values'}->[0]);
@frecs = &read_zone_file($fwdfile, $fwdconf->{'values'}->[0]);
if ($fwdconf eq $ofwdconf &&
&can_edit_zone($fwdconf->{'values'}->[0])) {
# old and new are in the same file
&modify_record($ofwdrec->{'file'} , $ofwdrec, $vals,
$ofwdrec->{'ttl'}, "IN", "A",
$in{'name'});
&bump_soa_record($ofwdfile, \@ofrecs);
}
elsif ($fwdconf && &can_edit_zone($fwdconf->{'values'}->[0])) {
# old and new in different files
&delete_record($ofwdrec->{'file'} , $ofwdrec);
&create_record($fwdfile, $vals, $ofwdrec->{'ttl'},
"IN", "A", $in{'name'});
&bump_soa_record($ofwdfile, \@ofrecs);
&bump_soa_record($fwdfile, \@frecs);
}
else {
# lose the forward because it has been moved to
# a zone not handled by this server
&delete_record($ofwdrec->{'file'} , $ofwdrec);
&bump_soa_record($ofwdfile, \@ofrecs);
}
}
}
&bump_soa_record($in{'file'}, \@recs);
&unlock_all_files();
&webmin_log($in{'new'} ? 'create' : 'modify', 'record', $in{'origin'}, $r);
&redirect("edit_recs.cgi?index=$in{'index'}&type=$in{'type'}");
sub valname
{
return $_[0] =~ /[A-z0-9\-\.]+$/;
}
# can_edit_reverse(&zone)
sub can_edit_reverse
{
return $access{'reverse'} || &can_edit_zone(\%access, $_[0]->{'values'}->[0]);
}
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