lnrpc+rpcserver: improve docs for CheckMacaroonPermissions #10030
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Summary of Changes
Hello @guggero, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!
This pull request primarily focuses on improving the clarity and comprehensiveness of the documentation for the CheckMacaroonPermissions RPC. It updates the descriptions for the RPC method itself and its request parameters across various interface definition files and generated code, ensuring that users and developers have a more precise understanding of its functionality and expected inputs.
Highlights
- Documentation Improvement: Enhanced the clarity and detail of documentation for the
CheckMacaroonPermissionsRPC and its request fields (macaroon,permissions,fullMethod). - API Clarity: Updated the RPC method's summary and individual field descriptions across
.proto, generated Go files, and Swagger definitions to provide a more precise understanding of its functionality, especially regarding macaroon validation and permission checking.
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Code Review
This pull request improves the documentation for the CheckMacaroonPermissions RPC and its related messages. The changes are generally good and make the API easier to understand. I've suggested a couple of wording improvements in the comments of the CheckMacPermRequest message in lnrpc/lightning.proto to further improve clarity and correctness regarding the macaroon and fullMethod fields.
| // the permission list above. To check a macaroon against the list of | ||
| // permissions of a certain RPC method, query the `ListPermissions` RPC | ||
| // first, extract the permissions for the method, and then pass them in the | ||
| // `permissions` field above. | ||
| string fullMethod = 3; |
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I'm not sure why this is needed, can't it be done by specifying entity: uri and action: fullMethod in permissions?
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This is the value the entity: uri is checked against. Let's say the macaroon has a bunch of different entity: uri, action: RPCxyz entries. Then setting the fullMethod allows you to check if the macaroon is valid for a specific method without needing to iterate through the permission actions yourself.
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/gemini review |
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Code Review
This pull request enhances the CheckMacaroonPermissions RPC by adding a new field check_default_perms_from_full_method to allow checking a macaroon against the default permissions of an RPC method. The documentation is updated accordingly, and a new integration test is added to cover the new functionality. The review suggests improving the clarity of the new documentation, fixing a typo in an error message, and suggesting additional test coverage for error cases to increase robustness. The changes are otherwise well-implemented and follow the project's style guide.
itest/lnd_macaroons_test.go
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| checkReq := &lnrpc.CheckMacPermRequest{ | ||
| Macaroon: macBytes, | ||
| FullMethod: "/lnrpc.Lightning/BakeMacaroon", |
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nit: specify CheckDefaultPermsFromFullMethod here?
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Was trying to avoid the lines becoming very long because of the indentation. But extracted the URI instead.
To make it even more obvious that by default the permissions to check aren't taken from the full method provided, we add a new flag that does that on request.
Fixes #10026.