3  * SPDX-License-Identifier: GPL-2.0-only
 
   5  * This file is part of Nominatim. (https://nominatim.org)
 
   7  * Copyright (C) 2022 by the Nominatim developer community.
 
   8  * For a full list of authors see the git log.
 
  11 require_once('init.php');
 
  12 require_once('ParameterParser.php');
 
  13 require_once(CONST_Debug ? 'DebugHtml.php' : 'DebugNone.php');
 
  15 /***************************************************************************
 
  17  * Error handling functions
 
  21 function userError($sMsg)
 
  23     throw new \Exception($sMsg, 400);
 
  27 function exception_handler_json($exception)
 
  29     http_response_code($exception->getCode());
 
  30     header('Content-type: application/json; charset=utf-8');
 
  31     include(CONST_LibDir.'/template/error-json.php');
 
  35 function exception_handler_xml($exception)
 
  37     http_response_code($exception->getCode());
 
  38     header('Content-type: text/xml; charset=utf-8');
 
  39     echo '<?xml version="1.0" encoding="UTF-8" ?>'."\n";
 
  40     include(CONST_LibDir.'/template/error-xml.php');
 
  44 function shutdown_exception_handler_xml()
 
  46     $error = error_get_last();
 
  47     if ($error !== null && $error['type'] === E_ERROR) {
 
  48         exception_handler_xml(new \Exception($error['message'], 500));
 
  52 function shutdown_exception_handler_json()
 
  54     $error = error_get_last();
 
  55     if ($error !== null && $error['type'] === E_ERROR) {
 
  56         exception_handler_json(new \Exception($error['message'], 500));
 
  61 function set_exception_handler_by_format($sFormat = null)
 
  63     // Multiple calls to register_shutdown_function will cause multiple callbacks
 
  64     // to be executed, we only want the last executed. Thus we don't want to register
 
  65     // one by default without an explicit $sFormat set.
 
  67     if (!isset($sFormat)) {
 
  68         set_exception_handler('exception_handler_json');
 
  69     } elseif ($sFormat == 'xml') {
 
  70         set_exception_handler('exception_handler_xml');
 
  71         register_shutdown_function('shutdown_exception_handler_xml');
 
  73         set_exception_handler('exception_handler_json');
 
  74         register_shutdown_function('shutdown_exception_handler_json');
 
  78 set_exception_handler_by_format();
 
  81 /***************************************************************************
 
  82  * HTTP Reply header setup
 
  85 if (CONST_NoAccessControl) {
 
  86     header('Access-Control-Allow-Origin: *');
 
  87     header('Access-Control-Allow-Methods: OPTIONS,GET');
 
  88     if (!empty($_SERVER['HTTP_ACCESS_CONTROL_REQUEST_HEADERS'])) {
 
  89         header('Access-Control-Allow-Headers: '.$_SERVER['HTTP_ACCESS_CONTROL_REQUEST_HEADERS']);
 
  92 if (isset($_SERVER['REQUEST_METHOD']) && $_SERVER['REQUEST_METHOD'] == 'OPTIONS') {
 
  97     header('Content-type: text/html; charset=utf-8');