[MH-13022] LTI User mapping doesn't work since 4.4 - Opencast

Details

Severity:
Incorrectly Functioning Without Workaround
Steps to reproduce:

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Steps to reproduce:
1. Configure Opencast as an LTI tool provider.
2. Remove the fourth constructor argument from the LtiLaunchAuthenticationHandler in etc/security/mh_default_org.xml.
3. Send an LTI request with "ext_user_username" set to the name of an existing Opencast user.

Actual Results:
You are not authenticated as that user.

Expected Results:
You should be authenticated as that user.

Workaround (if any):
Add a fourth constructor argument, e.g. like this: https://github.com/opencast/opencast/commit/ef7bc8e94936b426bec5cb52f846d81c8c903657

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Steps to reproduce: 1. Configure Opencast as an LTI tool provider. 2. Remove the fourth constructor argument from the LtiLaunchAuthenticationHandler in etc/security/mh_default_org.xml. 3. Send an LTI request with "ext_user_username" set to the name of an existing Opencast user. Actual Results: You are not authenticated as that user. Expected Results: You should be authenticated as that user. Workaround (if any): Add a fourth constructor argument, e.g. like this: https://github.com/opencast/opencast/commit/ef7bc8e94936b426bec5cb52f846d81c8c903657