…andling

#13257

☕️ Reasoning

The current OAuth callback handling only supports the standard OAuth2 token exchange flow, but certain OAuth providers (such as enterprise integrations or special authentication flows) require custom token request logic.

Key Changes:

• 🔧 Add support for provider.token.request custom function
• 🔄 Maintain full backward compatibility with standard OAuth2 flow
• ⚠️ Add comprehensive error handling and logging for custom token requests
• 📝 Refactor code structure to clearly separate token request logic

Use Cases:

• OAuth providers that need custom token exchange parameters
• Enterprise integrations with special authentication flows
• Security-sensitive applications requiring additional validation steps

Implementation Details:

• The implementation checks for the existence of provider.token.request function
• If present, it calls the custom function with the necessary parameters
• If not present, it falls back to the standard OAuth2 authorization code grant flow
• Proper error handling ensures that failures in custom token requests are logged and handled gracefully

🧢 Checklist

• Documentation
• Tests
• Ready to be merged

🎫 Affected issues

Fixes: #13257

📌 Resources

• Security guidelines
• Contributing guidelines
• Code of conduct
• Contributing to Open Source