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