<?php
header("Content-type: text/plain");
-if($_GET['token'] != "<here a secure password>"){
- die ();
+define("ZONENAME", "your-zonename");
+define("KEYNAME", "your/dns/update.key");
+$appIdentifier = "someca";
+
+if(!isset($_GET['token']) || !isset($_GET['t1']) || !isset($_GET['t2']) || !isset($_GET['action'])){
+ die("Error");
+}
+$link = mysqli_connect("localhost", "db-user", "db-pw", "db");
+if($_GET['token'] != "your-token-here"){
+ die ();
}
$t1 = $_GET['t1'];
$t2 = $_GET['t2'];
-if(!preg_match("/[a-zA-Z0-9]+/", $t1) || !preg_match("/[a-zA-Z0-9]+/", $t2)){
+if(!preg_match("/^[a-zA-Z0-9]+$/", $t1) || !preg_match("/^[a-zA-Z0-9]+$/", $t2)){
die("Error");
}
-$call = <<<EOF
-server localhost
-update delete cacert-{$t1}.<your fakezone here> TXT
-update add cacert-{$t1}.<your fakezone here> 60 TXT {$t2}
-send
-quit
+$dnscalls = "";
+if($t1!="purge"){
+ $stmt = $link->prepare("INSERT INTO tokens SET type=?, name=?");
+ $stmt->bind_param("ss", $type, $name);
+ $type=$_GET['action'];
+ $name = $t1;
+ if($_GET['action'] == "http"){
+ $stmt->execute();
+
+ file_put_contents(".well-known/$appIdentifier-challenge/$t1.txt", $t2);
+ } else if($_GET['action'] == "dns") {
+ $stmt->execute();
+
+ $dnscalls .= "update delete {$t1}._$appIdentifier._auth." . ZONENAME . " TXT\n"
+ ."update add {$t1}._$appIdentifier._auth." . ZONENAME . " 60 TXT {$t2}\n";
+ }
+}
+$stmt = $link->prepare("SELECT type, name FROM tokens WHERE created + 60000 < CURRENT_TIMESTAMP;");
+$stmt->execute();
+
+/* bind result variables */
+$stmt->bind_result($type, $name);
+$todelete = array();
-EOF;
-echo $call;
+/* fetch value */
+while($stmt->fetch()){
+ if($type == "http"){
+ unlink(".well-known/$appIdentifier-challenge/{$name}.txt");
+ } else if($type == "dns") {
+ $dnscalls .= "update delete {$name}._$appIdentifier._auth." . ZONENAME . " TXT\n";
+ }
+ $todelete[] = array("type"=>$type, "name"=>$name);
+}
+
+$stmtd = $link->prepare("DELETE FROM tokens WHERE type=? AND name=?");
+$stmtd->bind_param("ss", $type, $name);
-$nsupdate = popen("/usr/bin/nsupdate -k <here your dnssec key>.key", 'w');
-fwrite($nsupdate, $call);
-$retval = pclose($nsupdate); // nsupdate doesn't return anything useful when called this way
+foreach($todelete as $val){
+ $type = $val["type"];
+ $name = $val["name"];
+ $stmtd->execute();
+}
-?>
+if($dnscalls != ""){
+ dnsAction($dnscalls);
+}
+
+function dnsAction($command) {
+ $call = "server localhost\n$command\nsend\nquit\n";
+
+ $nsupdate = popen("/usr/bin/nsupdate -k " . KEYNAME, 'w');
+ fwrite($nsupdate, $call);
+ $retval = pclose($nsupdate); // nsupdate doesn't return anything useful when called this way
+}