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   2014-2015 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) {
  42                                         if (substr($txt, -1) != '"' && substr($txt, 0, 1) != '"') {
  43                                                 $record['data'] = '"'.$txt.'"';
  44                                         }
  45                                 }
  46
  47                                 if (strpos($record['data'], "v=spf1") !== false) {
  48                                         $out .= $record['name']."\t".$record['ttl']."\tIN\tSPF\t" . $record['data']."\n";
  49                                 }
  50
  51                                 $out .= $record['name']."\t".$record['ttl']."\tIN\t".$record['type']."\t" . $record['data']."\n";
  52                         }
  53                         else {
  54                                 $out .= $record['name']."\t".$record['ttl']."\tIN\t".$record['type']."\t\t" . $record['data']."\n";
  55                         }
  56                 }
  57
  58                 $zskkey = false;
  59                 $kskkey = false;
  60                 foreach ($zone['sec'] as $sec) {
  61                         $dir = "/srv/bind/dnssec/".$zone['soa']['origin']."/";
  62                         if (!file_exists($dir)) {
  63                                 shell_exec("mkdir -p ".$dir);
  64                         }
  65
  66                         if ($sec['type'] == "ZSK" || $sec['type'] == "KSK") {
  67                                 if (!empty($sec['public']) && !empty($sec['private'])) {
  68                                         preg_match("/; This is a (key|zone)-signing key, keyid ([0-9]+), for ".$zone['soa']['origin']."/i", $sec['public'], $match);
  69                                         $filename1 = getFileName ($zone['soa']['origin'], $sec['algo'], $match[2], "pub");
  70                                         $filename2 = getFileName ($zone['soa']['origin'], $sec['algo'], $match[2], "priv");
  71
  72                                         if (file_exists($dir.$filename1)) {
  73                                                 unlink($dir.$filename1);
  74                                         }
  75
  76                                         if (file_exists($dir.$filename2)) {
  77                                                 unlink($dir.$filename2);
  78                                         }
  79
  80                                         $handler = fOpen($dir.$filename1, "a+");
  81                                         fWrite($handler, $sec['public']);
  82                                         fClose($handler);
  83
  84                                         $handler = fOpen($dir.$filename2, "a+");
  85                                         fWrite($handler, $sec['private']);
  86                                         fClose($handler);
  87
  88                                         if (file_exists($dir.$filename1) && file_exists($dir.$filename2)) {
  89                                                 /* fallback for missing DNSKEY record */
  90                                                 if ($zsk === false || $ksk === false) {
  91                                                         preg_match("/".$zone['soa']['origin']." IN DNSKEY ([0-9]+) ([0-9]+) ([0-9]+) ([\s\S]+)/i", $sec['public'], $match);
  92                                                         $out .= $zone['soa']['origin']."\t60\tIN\tDNSKEY\t".$match[1]."\t".$match[2]." ".$match[3]." ".$match[4]."\n";
  93                                                         if ($sec['type'] == "ZSK") {
  94                                                                 $zsk = true;
  95                                                         }
  96                                                         else if ($sec['type'] == "KSK") {
  97                                                                 $ksk = true;
  98                                                         }
  99                                                 }
 100
 101                                                 if ($sec['type'] == "ZSK") {
 102                                                         $zskkey = true;
 103                                                 }
 104                                                 else if ($sec['type'] == "KSK") {
 105                                                         $kskkey = true;
 106                                                 }
 107                                         }
 108                                 }
 109                         }
 110                 }
 111
 112                 $sign = false;
 113                 if ($zsk === true && $ksk === true && $zskkey === true && $kskkey === true) {
 114                         $sign = true;
 115                 }
 116
 117                 $handler = fOpen("/srv/bind/".$zone['soa']['origin']."db", "a+");
 118                 fWrite($handler, $out);
 119                 fClose($handler);
 120
 121                 $signed = false;
 122                 if ($sign === true) {
 123                         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 ".$zone['soa']['origin']."db");
 124                         if (file_exists("/srv/bind/".$zone['soa']['origin']."db.signed")) {
 125                                 $signed = true;
 126                         }
 127                 }
 128
 129                 $cout = "zone \"" . $zone['soa']['origin'] . "\" {\n";
 130                 $cout .= "\ttype master;\n";
 131                 $cout .= "\tnotify no;\n";
 132                 $cout .= "\tfile \"/srv/bind/".$zone['soa']['origin']."db".($signed === true ? ".signed" : "")."\";\n";
 133                 $cout .= "};\n\n";
 134
 135                 $handler = fOpen("/srv/bind/domains.cfg", "a+");
 136                 fWrite($handler, $cout);
 137                 fClose($handler);
 138         }
 139
 140         shell_exec("/etc/init.d/bind9 reload");
 141 }
 142
 143 function getFileName ($zone, $algo, $id, $type) {
 144         $len = strlen($id);
 145         if ($len == "1") {
 146                 $id = "0000".$id;
 147         }
 148         else if ($len == "2") {
 149                 $id = "000".$id;
 150         }
 151         else if ($len == "3") {
 152                 $id = "00".$id;
 153         }
 154         else if ($len == "4") {
 155                 $id = "0".$id;
 156         }
 157         if ($type == "pub") {
 158                 $type = "key";
 159         }
 160         else if ($type == "priv") {
 161                 $type = "private";
 162         }
 163
 164         if ($algo == "8") {
 165                 $algo = "008";
 166         }
 167         else if ($algo == "10") {
 168                 $algo = "010";
 169         }
 170
 171         return "K".$zone."+".$algo."+".$id.".".$type;
 172 }