[ISSUE-218] fix: Change user from None to Anonymous User in authenticated requests

[OlhaShyliaieva]

Description

Modified the Lti1p3ApiAuthentication authentication backend. Set up in request AnonymousUser instead of None.
It allows DarkLangMiddleware to work properly without crashing when middleware tries to get a user from the request.

Supporting information

Issue: #218

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[regisb]

@giovannicimolin do you have an idea why you (or edX) did not face this issue before? Unless I'm mistaken it should occur for every LTI 1.3 unit, right?

[giovannicimolin]

@regisb

do you have an idea why you (or edX) did not face this issue before? Unless I'm mistaken it should occur for every LTI 1.3 unit, right?

No idea, I even tried reproducing it on my devstack without success. I worked for me during the implementation phase as well as for @nedbat when he ran the IMS certification tool.

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@OlhaShyliaieva Thanks for the contribution! Can you sign the contributor agreement and ping me once it's done? Only then I'll be able to review + move this forward. 😁

[e0d]

@OlhaShyliaieva we've processed an individual CLA for you, but I believe this should be covered under the RaccoonGang Entity CLA. @idegtiarov can you confirm?

[natabene]

@OlhaShyliaieva Thank you for your contribution.

[codecov]

Codecov Report

Merging #228 (c82dbeb) into master (f96d560) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #228   +/-   ##
=======================================
  Coverage   97.14%   97.14%           
=======================================
  Files          66       66           
  Lines        4696     4697    +1     
=======================================
+ Hits         4562     4563    +1     
  Misses        134      134           

Flag	Coverage Δ
unittests	97.14% <100.00%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
lti_consumer/__init__.py	100.00% <100.00%> (ø)
...ti_1p3/extensions/rest_framework/authentication.py	100.00% <100.00%> (ø)

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[idegtiarov]

Hi @e0d I confirm @OlhaShyliaieva is covered with the RaccoonGang Entity CLA.

[natabene]

@idegtiarov Thanks for confirming. @e0d Please update the file once you have a chance.
@OlhaShyliaieva I think your CLA check should clear with the next commit. Let me know if it doesn't happen.

[giovannicimolin]

@natabene CLA check is green now. 😄

@OlhaShyliaieva Can you add in a minor version bump (here) and add a changelog entry?

[OlhaShyliaieva]

@giovannicimolin Done

[natabene]

I still see a conflict.

[giovannicimolin]

@OlhaShyliaieva I just tested the change and it's working perfectly. A few changes were merged in while this was in my backlog, so can you update the version bump and changelog? Once you do it I'll approve the PR and merge the changes.

[ormsbee]

I merged this change in a different PR: #261

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