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Merge pull request #14559 from Snuffleupagus/revert-9505

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Revert "Don't block origin-less blob:-URLs in hosted viewer"
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Tim van der Meij 2022-02-13 14:10:22 +01:00 • committed by GitHub
commit 78246719f8
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1 changed files with 2 additions and 5 deletions
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web/app.js
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@ -2127,14 +2127,11 @@ if (typeof PDFJSDev === "undefined" || PDFJSDev.test("GENERIC")) {
// Hosted or local viewer, allow for any file locations
return;
}
const { origin, protocol } = new URL(file, window.location.href);
const fileOrigin = new URL(file, window.location.href).origin;
// Removing of the following line will not guarantee that the viewer will
// start accepting URLs from foreign origin -- CORS headers on the remote
// server must be properly configured.
// IE10 / IE11 does not include an origin in `blob:`-URLs. So don't block
// any blob:-URL. The browser's same-origin policy will block requests to
// blob:-URLs from other origins, so this is safe.
if (origin !== viewerOrigin && protocol !== "blob:") {
if (fileOrigin !== viewerOrigin) {
throw new Error("file origin does not match viewer's");
}
} catch (ex) {