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-rw-r--r--dns.php90
1 files changed, 76 insertions, 14 deletions
diff --git a/dns.php b/dns.php
index 2ac85d1..ffb7654 100644
--- a/dns.php
+++ b/dns.php
@@ -3,23 +3,85 @@ ini_set("display_errors", 1);
ini_set("display_startup_errors", 1);
error_reporting(E_ALL);
-if ($_POST['domain']) {
- echo "domain posted\n";
+function sshrun($command) {
+ $host = "misc.tghost.co.uk";
+ $user = "bladns.net";
+ $keypub = "/home/bladns.net/.ssh/id_rsa.pub";
+ $keypriv = "/home/bladns.net/.ssh/id_rsa";
- $connection = ssh2_connect("misc.tghost.co.uk", 22, array("hostkey" => "ssh-rsa"));
+ $connection = ssh2_connect($host, 22, array("hostkey" => "ssh-rsa"));
- if (ssh2_auth_pubkey_file($connection, "bladns.net", "/home/bladns.net/.ssh/id_rsa.pub", "/home/bladns.net/.ssh/id_rsa")) {
- echo "Public Key Authentication Successful\n<br>\n<br>";
- } else {
- echo "Public Key Authentication Failed\n<br>\n<br>";
- }
+ ssh2_auth_pubkey_file($connection, $user, $keypub, $keypriv);
- echo "<pre>";
- $stream = ssh2_exec($connection, "ps aux | grep named");
+ $stream = ssh2_exec($connection, $command);
stream_set_blocking($stream, true);
$stream_out = ssh2_fetch_stream($stream, SSH2_STREAM_STDIO);
- echo stream_get_contents($stream_out);
- echo "</pre>";
+ return stream_get_contents($stream_out);
+}
+
+function getzone($domain, $password) {
+ $zoneroot = "/var/bind/pri/";
+ $zonesuffix = ".zone";
+
+ if (!preg_match('/^[0-9A-Za-z\.\-]*$/', $_POST['domain'])) {
+ die("invalid domain");
+ }
+
+ $string = sshrun("cat " . $zoneroot . $domain . $zonesuffix);
+
+ $zonelines = explode("\n", $string);
+ $zonehash = explode(" ", $zonelines[0]);
+
+ if ($zonehash[sizeof($zonehash) - 1] == $password) {
+ return $string;
+ } else {
+ return;
+ }
+}
+
+function writezone($domain, $password, $zonetext) {
+ $zoneroot = "/var/bind/pri/";
+ $zonesuffix = ".zone";
+
+ if (!preg_match('/^[0-9A-Za-z\.\-]*$/', $_POST['domain'])) {
+ die("invalid domain");
+ }
+
+ if (!getzone($domain, $password)) {
+ die("somehow the password went bad");
+ }
+
+ $zonetext = str_replace('$', '\$', $zonetext);
+
+ sshrun("echo -e \"$zonetext\" > $zoneroot$domain$zonesuffix");
+ sshrun("rndc reload $domain");
+}
+
+// Main entry point
+
+if (isset($_POST['domain']) && isset($_POST['password']) && !isset($_POST['zonetext'])) {
+ if (!preg_match('/^[0-9A-Za-z\.\-]*$/', $_POST['domain'])) {
+ die("invalid domain");
+ }
+
+ $password = hash("sha256", $_POST['password']);
+
+ if ($zonefile = getzone($_POST['domain'], $password)) {
+?>
+ <form action="dns.php" method="post">
+ <textarea rows="24" cols="80" name="zonetext" autofocus><?php echo $zonefile; ?></textarea><br>
+ <input type="hidden" name="domain" value="<?php echo $_POST['domain']; ?>">
+ <input type="hidden" name="password" value="<?php echo $password; ?>">
+ <input type="submit" value="Update zonefile"><br>
+ </form>
+<?php
+ } else {
+ die("sorry, the domain or password is wrong :(");
+ }
+} else if (isset($_POST['domain']) && isset($_POST['password']) && isset($_POST['zonetext'])) {
+ $zonetext = str_replace("\r", '', $_POST['zonetext']);
+ writezone($_POST['domain'], $_POST['password'], $zonetext);
+ echo "all done :)";
} else {
?>
<!DOCTYPE html>
@@ -30,9 +92,9 @@ if ($_POST['domain']) {
</head>
<body>
<form name="login" action="dns.php" method="post">
- Domain name: <input type="text" name="domain"><br>
+ Domain name: <input type="text" name="domain" autofocus><br>
Password: <input type="password" name="password"><br>
- <input type="submit">
+ <input type="submit" value="Login">
</form>
</body>
</html>