We have some actions that leverage the Gitea API that began receiving
401 errors, with a message that the user was not found. These actions
use the `ACTIONS_RUNTIME_TOKEN` env var in the actions job to
authenticate with the Gitea API. The format of this env var in actions
jobs changed with go-gitea/gitea/pull/28885 to be a JWT (with a
corresponding update to `act_runner`) Since it was a JWT, the OAuth
parsing logic attempted to parse it as an OAuth token, and would return
user not found, instead of falling back to look up the running task and
assigning it to the actions user.
Make ACTIONS_RUNTIME_TOKEN in action runners could be used,
attempting to parse Oauth JWTs. The code to parse potential old
`ACTION_RUNTIME_TOKEN` was kept in case someone is running an older
version of act_runner that doesn't support the Actions JWT.
Also resolves a warning for current releases
```
| ##[group]GitHub Actions runtime token ACs
| ##[warning]Cannot parse GitHub Actions Runtime Token ACs: "undefined" is not valid JSON
| ##[endgroup]
====>
| ##[group]GitHub Actions runtime token ACs
| ##[endgroup]
```
\* this is an error in v3
References in the docker org:
-
831ca179d3/src/main.ts (L24)
-
7d8b4dc669/src/github.ts (L61)
No known official action of GitHub makes use of this claim.
Current releases throw an error when configure to use actions cache
```
| ERROR: failed to solve: failed to configure gha cache exporter: invalid token without access controls
| ##[error]buildx failed with: ERROR: failed to solve: failed to configure gha cache exporter: invalid token without access controls
```
This change allows act_runner / actions_runner to use jwt tokens for
`ACTIONS_RUNTIME_TOKEN` that are compatible with
actions/upload-artifact@v4.
The official Artifact actions are now validating and extracting the jwt
claim scp to get the runid and jobid, the old artifact backend also
needs to accept the same token jwt.
---
Related to #28853
I'm not familar with the auth system, maybe you know how to improve this
I have tested
- the jwt token is a valid token for artifact uploading
- the jwt token can be parsed by actions/upload-artifact@v4 and passes
their scp claim validation
Next steps would be a new artifacts@v4 backend.
~~I'm linking the act_runner change soonish.~~
act_runner change to make the change effective and use jwt tokens
<https://gitea.com/gitea/act_runner/pulls/471>
