third_party/WebKit/LayoutTests/http/tests/serviceworker/resources/fetch-rewrite-worker.js

   1 function get_query_params(url) {
   2   var search = (new URL(url)).search;
   3   if (!search) {
   4     return {};
   5   }
   6   var ret = {};
   7   var params = search.substring(1).split('&');
   8   params.forEach(function(param) {
   9       var element = param.split('=');
  10       ret[decodeURIComponent(element[0])] = decodeURIComponent(element[1]);
  11     });
  12   return ret;
  13 }
  14
  15 function get_request_init(params) {
  16   var init = {};
  17   if (params['method']) {
  18     init['method'] = params['method'];
  19   }
  20   if (params['mode']) {
  21     init['mode'] = params['mode'];
  22   }
  23   if (params['credentials']) {
  24     init['credentials'] = params['credentials'];
  25   }
  26   if (params['redirect-mode']) {
  27     init['redirect'] = params['redirect-mode'];
  28   }
  29   return init;
  30 }
  31
  32 self.addEventListener('fetch', function(event) {
  33     var params = get_query_params(event.request.url);
  34     var init = get_request_init(params);
  35     var url = params['url'];
  36     if (params['ignore']) {
  37       return;
  38     }
  39     if (params['reject']) {
  40       event.respondWith(new Promise(function(resolve, reject) {
  41           reject();
  42         }));
  43       return;
  44     }
  45     if (params['resolve-null']) {
  46       event.respondWith(new Promise(function(resolve) {
  47           resolve(null);
  48         }));
  49       return;
  50     }
  51     if (params['generate-png']) {
  52       var binary = atob(
  53           'iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAAAXNSR0IArs4c6QAAAA' +
  54           'RnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAAhSURBVDhPY3wro/Kf' +
  55           'gQLABKXJBqMGjBoAAqMGDLwBDAwAEsoCTFWunmQAAAAASUVORK5CYII=');
  56       var array = new Uint8Array(binary.length);
  57       for(var i = 0; i < binary.length; i++) {
  58         array[i] = binary.charCodeAt(i)
  59       };
  60       event.respondWith(new Response(new Blob([array], {type: 'image/png'})));
  61       return;
  62     }
  63     event.respondWith(new Promise(function(resolve, reject) {
  64         var request = event.request;
  65         if (url) {
  66           request = new Request(url, init);
  67         }
  68         fetch(request).then(resolve, reject);
  69       }));
  70   });