<?php

header("Content-Type: content/json");

function stop($error)
{
  http_response_code(513);
  printf(json_encode($error));
  die;
}

$_SERVER['REQUEST_METHOD'] !== "GET" && stop("Method " . $_SERVER['REQUEST_METHOD'] . " not allowed");

$result_code = 0;
passthru("/usr/bin/rndc dumpdb -zones", $result_code);
$result_code === 0 || stop("Unable to get zone");
sleep(2);

$HANDLE = fopen("/var/named/named_dump.db", "r");
$HANDLE || stop("Unable to read zone db");

$ZONE = new stdClass();
$CURRENTZONE = "";

while (($LINE = fgets($HANDLE)) !== false) {
  if (str_starts_with($LINE, ";")) continue;
  $LINE = preg_split("/\s+/", $LINE);
  if ($LINE[3] === "SOA") {
    $CURRENTZONE = $LINE[0];
    $ZONE->$CURRENTZONE = [];
  }

  $RECORD = new stdClass();
  $RECORD->name = $LINE[0];
  array_shift($LINE);
  $RECORD->ttl = $LINE[0];
  array_shift($LINE);
  $RECORD->class = $LINE[0];
  array_shift($LINE);
  $RECORD->type = $LINE[0];
  array_shift($LINE);
  $RECORD->rr = implode(" ", $LINE);
  array_push($ZONE->$CURRENTZONE, $RECORD);
  unset($RECORD);
}

printf(json_encode($ZONE));