The Tor Browser / file revision

 var DEBUG = true;

 var clientID = "javascript";

 var nsICache = Components.interfaces.nsICache;

 function getCacheService()

 {

     var nsCacheService = Components.classes["@mozilla.org/network/cache-service;1"];

     var service = nsCacheService.getService(Components.interfaces.nsICacheService);

     return service;

 }

 function CacheVisitor()

 {

 }

 CacheVisitor.prototype = {

     QueryInterface : function(iid)

     {

         if (iid.equals(Components.interfaces.nsICacheVisitor))

             return this;

         throw Components.results.NS_NOINTERFACE;

     },

     visitDevice : function(deviceID, deviceInfo)

     {

         print("[visiting device (deviceID = " + deviceID + ", description = " + deviceInfo.description + ")]");

         return true;

     },

     visitEntry : function(deviceID, entryInfo)

     {

         print("[visiting entry (clientID = " + entryInfo.clientID + ", key = " + entryInfo.key + ")]");

         return true;

     }

 };

 function test()

 {

     var cacheService = getCacheService();

     var visitor = new CacheVisitor();

     cacheService.visitEntries(visitor);

 }

 // load the cache service before doing anything with Java...

 getCacheService();

 if (DEBUG) {

     print("cache service loaded.");

 } else {

     print("running cache visitor test.");

     test();

     print("cache visitor test complete.");

 }