Wraps worker script if its cross-origin location is detected.

This commit is contained in:
Yury Delendik 2016-01-15 15:05:46 -06:00
parent 7f821f5b78
commit 1e45f2d4e1
2 changed files with 33 additions and 0 deletions

View file

@ -48,6 +48,7 @@ var error = sharedUtil.error;
var deprecated = sharedUtil.deprecated;
var info = sharedUtil.info;
var isArrayBuffer = sharedUtil.isArrayBuffer;
var isSameOrigin = sharedUtil.isSameOrigin;
var loadJpegStream = sharedUtil.loadJpegStream;
var stringToBytes = sharedUtil.stringToBytes;
var warn = sharedUtil.warn;
@ -1226,6 +1227,14 @@ var PDFWorker = (function PDFWorkerClosure() {
return PDFJS.fakeWorkerFilesLoadedCapability.promise;
}
function createCDNWrapper(url) {
// We will rely on blob URL's property to specify origin.
// We want this function to fail in case if createObjectURL or Blob do not
// exist or fail for some reason -- our Worker creation will fail anyway.
var wrapper = 'importScripts(\'' + url + '\');';
return URL.createObjectURL(new Blob([wrapper]));
}
function PDFWorker(name) {
this.name = name;
this.destroyed = false;
@ -1261,6 +1270,14 @@ var PDFWorker = (function PDFWorkerClosure() {
var workerSrc = getWorkerSrc();
try {
//#if GENERIC
// // Wraps workerSrc path into blob URL, if the former does not belong
// // to the same origin.
// if (!isSameOrigin(window.location.href, workerSrc)) {
// workerSrc = createCDNWrapper(
// combineUrl(window.location.href, workerSrc));
// }
//#endif
// Some versions of FF can't create a worker on localhost, see:
// https://bugzilla.mozilla.org/show_bug.cgi?id=683280
var worker = new Worker(workerSrc);