1504690 - Content blocking break Google API usage

Status: RESOLVED DUPLICATE of bug 1505212

(Firefox :: Protections UI, defect)

Description

[Alexandre Poirot [:ochameau]]

This page is using Google API to fill a Spreadsheet, but it is broken when Content blocking is enabled (default on nightly):
  https://firefox-dev.tools/performance-dashboard/perfherder/?test=cold.inspector.open&days=14&filterstddev=true&ignore-flags=true

It breaks Google API because of cookie's restriction. It works again if:
* I disable content blocking for this website
* I disable "Third-Party Cookies" blocking in about:preferences

I imagine it is related to this warning:
  Request to access cookie or storage on “https://apis.google.com/js/api.js” was blocked because it came from a tracker and content blocking is enabled.

Comment 1

[(no longer active)]

Thanks for the bug report, Alexandre.

Do you know which Google API this site using which may be hitting this problem by any chance?  Looks like it uses the Google Charts API, but I thought perhaps you may know more about what goes on behind the hood?

Comment 2

[(no longer active)]

Looking at this more closely under the debugger, I see the same exception as we saw in bug 1505212 ("sessionStorage is not available...") here as well, so perhaps the fix to that bug could be applied here too (there is an accounts.google.com iframe present!)

Comment 3

[Alexandre Poirot [:ochameau]]

Yes, that's the same exception! Thanks for having looked into it in detail. It is not clear why this exception was silent. Shouldn't the rejected promise be reported?

I reduced the testcase to the bare minimum and added a console.log to highlight this exception:
  gapi.client.init error 
Object { error: "idpiframe_initialization_failed", details: "sessionStorage is not available in the current environment." }

Which you can retrigger at any moment by running:
      gapi.client.init({
        apiKey: API_KEY,
        clientId: CLIENT_ID,
        discoveryDocs: DISCOVERY_DOCS,
        scope: SCOPES
      }).then(function () {
        // Handle the initial sign-in state.
        const isSignedIn = gapi.auth2.getAuthInstance().isSignedIn.get();
        console.log("is signed in", isSignedIn);
        resolve();
      }, error => {
         console.log("gapi.client.init error", error);
      });

Comment 4

[Alexandre Poirot [:ochameau]]

Oh, I forgot the URL of the reduced test case:
  https://firefox-dev.tools/performance-dashboard/googleapi/index.html

Comment 5

[(no longer active)]

This is fixed with the patch in bug 1505212.