bind9.php

   1 <?php
   2 /**
   3  * @author      Jan Altensen (Stricted)
   4  * @license     GNU Lesser General Public License <http://opensource.org/licenses/lgpl-license.php>
   5  * @copyright   2014-2016 Jan Altensen (Stricted)
   6  */
   7 $data = file_get_contents("https://dns-control.eu/API/?key=xxx");
   8 $data = json_decode($data, true);
   9 if (is_array($data) && !isset($data['error'])) {
  10         shell_exec("rm -rf /srv/bind/*");
  11
  12         foreach ($data as $zone) {
  13                 $out = $zone['soa']['origin']."\t".$zone['soa']['minimum']."\tIN\tSOA\t".$zone['soa']['ns']." ".$zone['soa']['mbox']." (\n";
  14                 $out .= "\t\t\t\t".$zone['soa']['serial']."\t; Serial\n";
  15                 $out .= "\t\t\t\t".$zone['soa']['refresh']."\t\t; Refresh\n";
  16                 $out .= "\t\t\t\t".$zone['soa']['retry']."\t\t; Retry\n";
  17                 $out .= "\t\t\t\t".$zone['soa']['expire']."\t\t; Expire\n";
  18                 $out .= "\t\t\t\t180 )\t\t; Negative Cache TTL\n";
  19                 $out .= ";\n";
  20
  21                 $signed = false;
  22                 $zsk = false;
  23                 $ksk = false;
  24                 foreach ($zone['rr'] as $record) {
  25                         if ($record['type'] == "DNSKEY") {
  26                                 if ($record['aux'] == 256) {
  27                                         $zsk = true;
  28                                 }
  29                                 else if ($record['aux'] == 257) {
  30                                         $ksk = true;
  31                                 }
  32
  33                                 $out .= $record['name']."\t".$record['ttl']."\tIN\t".$record['type']."\t".$record['aux']."\t".$record['data']."\n";
  34                         }
  35                         else if ($record['type'] == "MX" || $record['type'] == "SRV" || $record['type'] == "TLSA" || $record['type'] == "DS") {
  36                                 $out .= $record['name']."\t".$record['ttl']."\tIN\t".$record['type']."\t".$record['aux']."\t".$record['data']."\n";
  37                         }
  38                         else if ($record['type'] == "TXT") {
  39                                 $txt = $record['data'];
  40
  41                                 if (strpos($txt, " ") !== false && strpos($txt, '" "') !== false && $txt != '" "') {
  42                                         if (substr($txt, 0, 1) != '(' && substr($txt, -1) != ')') {
  43                                                 if (substr($txt, 0, 1) != '"' && substr($txt, -1) != '"') {
  44                                                         $record['data'] = '("'.$txt.'")';
  45                                                 }
  46                                                 else {
  47                                                         $record['data'] = '('.$txt.')';
  48                                                 }
  49                                         }
  50                                 }
  51                                 else if (substr($txt, 0, 1) != '"' && substr($txt, -1) != '"') {
  52                                         $record['data'] = '"'.$txt.'"';
  53                                 }
  54
  55                                 if (strpos($record['data'], "v=spf1") !== false) {
  56                                         $out .= $record['name']."\t".$record['ttl']."\tIN\tSPF\t" . $record['data']."\n";
  57                                 }
  58
  59                                 $out .= $record['name']."\t".$record['ttl']."\tIN\t".$record['type']."\t" . $record['data']."\n";
  60                         }
  61                         else {
  62                                 $out .= $record['name']."\t".$record['ttl']."\tIN\t".$record['type']."\t\t" . $record['data']."\n";
  63                         }
  64                 }
  65
  66                 $zskkey = false;
  67                 $kskkey = false;
  68                 foreach ($zone['sec'] as $sec) {
  69                         $dir = "/srv/bind/dnssec/".$zone['soa']['origin']."/";
  70                         if (!file_exists($dir)) {
  71                                 shell_exec("mkdir -p ".$dir);
  72                         }
  73
  74                         if ($sec['type'] == "ZSK" || $sec['type'] == "KSK") {
  75                                 if (!empty($sec['public']) && !empty($sec['private'])) {
  76                                         preg_match("/; This is a (key|zone)-signing key, keyid ([0-9]+), for ".$zone['soa']['origin']."/i", $sec['public'], $match);
  77                                         $filename1 = getFileName ($zone['soa']['origin'], $sec['algo'], $match[2], "pub");
  78                                         $filename2 = getFileName ($zone['soa']['origin'], $sec['algo'], $match[2], "priv");
  79
  80                                         if (file_exists($dir.$filename1)) {
  81                                                 unlink($dir.$filename1);
  82                                         }
  83
  84                                         if (file_exists($dir.$filename2)) {
  85                                                 unlink($dir.$filename2);
  86                                         }
  87
  88                                         $handler = fOpen($dir.$filename1, "a+");
  89                                         fWrite($handler, $sec['public']);
  90                                         fClose($handler);
  91
  92                                         $handler = fOpen($dir.$filename2, "a+");
  93                                         fWrite($handler, $sec['private']);
  94                                         fClose($handler);
  95
  96                                         if (file_exists($dir.$filename1) && file_exists($dir.$filename2)) {
  97                                                 /* fallback for missing DNSKEY record */
  98                                                 if ($zsk === false || $ksk === false) {
  99                                                         preg_match("/".$zone['soa']['origin']." IN DNSKEY ([0-9]+) ([0-9]+) ([0-9]+) ([\s\S]+)/i", $sec['public'], $match);
 100                                                         $out .= $zone['soa']['origin']."\t60\tIN\tDNSKEY\t".$match[1]."\t".$match[2]." ".$match[3]." ".$match[4]."\n";
 101                                                         if ($sec['type'] == "ZSK") {
 102                                                                 $zsk = true;
 103                                                         }
 104                                                         else if ($sec['type'] == "KSK") {
 105                                                                 $ksk = true;
 106                                                         }
 107                                                 }
 108
 109                                                 if ($sec['type'] == "ZSK") {
 110                                                         $zskkey = true;
 111                                                 }
 112                                                 else if ($sec['type'] == "KSK") {
 113                                                         $kskkey = true;
 114                                                 }
 115                                         }
 116                                 }
 117                         }
 118                 }
 119
 120                 $sign = false;
 121                 if ($zsk === true && $ksk === true && $zskkey === true && $kskkey === true) {
 122                         $sign = true;
 123                 }
 124
 125                 $handler = fOpen("/srv/bind/".$zone['soa']['origin']."db", "a+");
 126                 fWrite($handler, $out);
 127                 fClose($handler);
 128
 129                 $signed = false;
 130                 if ($sign === true) {
 131                         shell_exec("cd /srv/bind/ && /usr/sbin/dnssec-signzone -r /dev/urandom -A -N INCREMENT -K /srv/bind/dnssec/".$zone['soa']['origin']."/ -o ".$zone['soa']['origin']." -t ".$zone['soa']['origin']."db");
 132                         if (file_exists("/srv/bind/".$zone['soa']['origin']."db.signed")) {
 133                                 $signed = true;
 134                         }
 135                 }
 136
 137                 $cout = "zone \"" . $zone['soa']['origin'] . "\" {\n";
 138                 $cout .= "\ttype master;\n";
 139                 $cout .= "\tnotify no;\n";
 140                 $cout .= "\tfile \"/srv/bind/".$zone['soa']['origin']."db".($signed === true ? ".signed" : "")."\";\n";
 141                 $cout .= "};\n\n";
 142
 143                 $handler = fOpen("/srv/bind/domains.cfg", "a+");
 144                 fWrite($handler, $cout);
 145                 fClose($handler);
 146         }
 147
 148         shell_exec("/etc/init.d/bind9 reload");
 149 }
 150
 151 function getFileName ($zone, $algo, $id, $type) {
 152         $len = strlen($id);
 153         if ($len == "1") {
 154                 $id = "0000".$id;
 155         }
 156         else if ($len == "2") {
 157                 $id = "000".$id;
 158         }
 159         else if ($len == "3") {
 160                 $id = "00".$id;
 161         }
 162         else if ($len == "4") {
 163                 $id = "0".$id;
 164         }
 165         if ($type == "pub") {
 166                 $type = "key";
 167         }
 168         else if ($type == "priv") {
 169                 $type = "private";
 170         }
 171
 172         if ($algo == "8") {
 173                 $algo = "008";
 174         }
 175         else if ($algo == "10") {
 176                 $algo = "010";
 177         }
 178
 179         return "K".$zone."+".$algo."+".$id.".".$type;
 180 }