Improved www.ttss.krakow.pl
Jacek Kowalski
2019-07-06 58a4db388f5feb5e2298929f872bf21be9933b4a
proxy_tram.php
@@ -1,117 +1,3 @@
<?php
function is_number($str) {
   $str = (string)$str;
   return
      ctype_digit($str)
      OR
      (
         substr($str, 0, 1) == '-'
         AND
         ctype_digit(substr($str, 1))
      );
}
$base_proxy = 'http://www.ttss.krakow.pl/internetservice';
$method = [
   '/services/lookup/autocomplete/json' => [
      'query' => function() { return TRUE; },
   ],
   '/services/passageInfo/stopPassages/stop' => [
      'stop' => 'ctype_alnum',
      'mode' => function($mode) { return in_array($mode, ['arrival', 'departure']); },
      #'startTime' => 'ctype_digit',
      #'timeFrame' => 'ctype_digit',
   ],
   '/services/passageInfo/stopPassages/stopPoint' => [
      'stopPoint' => 'is_number',
      'mode' => function($mode) { return in_array($mode, ['arrival', 'departure']); },
      #'startTime' => 'ctype_digit',
      #'timeFrame' => 'ctype_digit',
   ],
   '/services/tripInfo/tripPassages' => [
      'tripId' => 'ctype_digit',
      'mode' => function($mode) { return in_array($mode, ['arrival', 'departure']); },
      #'vehicleId' => 'ctype_digit',
   ],
   '/services/routeInfo/routeStops' => [
      'routeId' => 'ctype_alnum',
   ],
   '/services/stopInfo/stop' => [
      'stop' => 'is_number',
   ],
   '/services/stopInfo/stopPoint' => [
      'stopPoint' => 'is_number',
   ],
   '/geoserviceDispatcher/services/stopinfo/stops' => [
      'left' => 'is_number',
      'bottom' => 'is_number',
      'right' => 'is_number',
      'top' => 'is_number',
   ],
   '/geoserviceDispatcher/services/stopinfo/stopPoints' => [
      'left' => 'is_number',
      'bottom' => 'is_number',
      'right' => 'is_number',
      'top' => 'is_number',
   ],
   '/geoserviceDispatcher/services/pathinfo/route' => [
      'id' => 'is_number',
      'direction' => 'is_number',
   ],
   '/geoserviceDispatcher/services/pathinfo/vehicle' => [
      'id' => 'is_number',
   ],
   '/geoserviceDispatcher/services/vehicleinfo/vehicles' => [
      'lastUpdate' => 'ctype_digit',
      'positionType' => function($type) { return in_array($type, ['CORRECTED']); },
      'colorType' => function($type) { return in_array($type, ['ROUTE_BASED']); },
   ],
];
$rewrite = [
   '/lookup/autocomplete/json' => '/services/lookup/autocomplete/json',
   '/passageInfo/stopPassages/stop' => '/services/passageInfo/stopPassages/stop',
   '/routeInfo/routeStops' => '/services/routeInfo/routeStops',
   '/internetservice/geoserviceDispatcher/services/pathinfo/vehicle' => '/geoserviceDispatcher/services/pathinfo/vehicle',
];
$path = $_SERVER['PATH_INFO'];
if(isset($rewrite[$path])) {
   $path = $rewrite[$path];
}
if(!isset($method[$path])) {
   header('HTTP/1.1 403 Forbidden');
   die('Forbidden');
}
$parameters = [];
foreach($method[$path] as $name => $filter) {
   if(!isset($_GET[$name])) {
      header('HTTP/1.1 403 Forbidden');
      die('Parameter '.$name.' is required');
   }
   if(!$filter($_GET[$name])) {
      header('HTTP/1.1 403 Forbidden');
      die('Parameter '.$name.' has invalid value');
   }
   $parameters[$name] = $_GET[$name];
}
$result = @file_get_contents($base_proxy . $path . '?' . http_build_query($parameters));
if(!$result OR $http_response_header[0] != 'HTTP/1.1 200 OK') {
   header('HTTP/1.1 503 Service Unavailable');
   if(isset($http_response_header[0])) {
      die($http_response_header[0]);
   } else {
      die('Unknown error');
   }
}
header('Content-Type: application/json');
echo $result;
require('proxy_common.php');