Allow for optional AZP validation in authentication_service

[pitwegner]

Closes #2077.

Summary by CodeRabbit

• New Features

  • Introduced a new configuration option for enhanced control over OpenID verification settings.

• Bug Fixes

  • Improved validation logic for the authorized party (AZP) parameter in the authentication process, allowing for better flexibility based on configuration settings.

[coderabbitai]

Walkthrough

Walkthrough

The changes introduce a new configuration option for verifying the authorized party (AZP) in the OpenID Connect flow within the Spiffworkflow backend. The configuration allows for more granular control over AZP verification, which is reflected in the authentication logic. The modifications include the addition of a new environment variable and adjustments to the validation method for the AZP parameter based on the configuration setting.

Changes

Files	Change Summary
spiffworkflow_backend/config/default.py, spiffworkflow_backend/services/authentication_service.py	Added a new configuration option for AZP verification and modified the authentication logic to utilize this configuration.

Assessment against linked issues

Objective	Addressed	Explanation
Authorized Party Check does not make sense (#2077)	✅

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Commits

Files that changed from the base of the PR and between fe36138 and 98b615a.

Files selected for processing (2)

• spiffworkflow-backend/src/spiffworkflow_backend/config/default.py (1 hunks)
• spiffworkflow-backend/src/spiffworkflow_backend/services/authentication_service.py (1 hunks)

Additional comments not posted (2)

spiffworkflow-backend/src/spiffworkflow_backend/config/default.py (1)

123-123: LGTM!

The addition of the SPIFFWORKFLOW_BACKEND_OPEN_ID_VERIFY_AZP configuration option with a default value of True is a good approach to provide flexibility in the AZP verification process. It allows for granular control over the verification of the authorization party (AZP) in the OpenID Connect flow, while maintaining the current behavior by default.

This change aligns with the PR objective of addressing the issue related to the AZP check in the authentication service, as outlined in the linked issue #2077. It provides a way to make the AZP validation optional, accommodating scenarios where a token is exchanged from a different service.

spiffworkflow-backend/src/spiffworkflow_backend/services/authentication_service.py (1)

331-331: Looks good! The change enhances the flexibility of the azp validation.

The modification introduces a new condition that checks the SPIFFWORKFLOW_BACKEND_OPEN_ID_VERIFY_AZP configuration setting. If this setting is False, the method will return True when azp is None, effectively skipping the azp validation. This allows the azp validation to be optional based on the application's configuration.

This change is beneficial in scenarios where the azp claim is not present in the token or not required for authentication. It provides flexibility to accommodate different authentication flows and token formats.

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[pitwegner]

Is there a place where environment/config variables need to be documented?

[burnettk]

we don't have a separate place for documenting these other than default.py itself. thanks for the contribution!