Backport #38284 by @bircni
Fixes#38278
## Problem
When branch protection matches the branch an Actions workflow pushes to,
the runner's `git push` is rejected — even though the workflow token has
`contents: write` and the same push performed with a PAT (write access)
succeeds. Disabling protection or changing the pattern so it no longer
matches makes the push work.
## Root cause
In `preReceiveBranch` (`routers/private/hook_pre_receive.go`), the "can
the doer push to this protected branch" check resolves the pusher with
`user_model.GetUserByID(ctx, ctx.opts.UserID)`. For an Actions push the
user ID is `-2` (the virtual `ActionsUserID`), which has no database
row, so the lookup fails. Even past that, `CanUserPush` →
`HasAccessUnit`/whitelist membership cannot evaluate a virtual user and
returns `false`. As a result the Actions bot was rejected on every
matching protected branch, despite the earlier `assertCanWriteRef`
already confirming the token's code-write via
`GetActionsUserRepoPermission`.
This was inconsistent: a PAT with identical write access passed the
exact same check.
## Fix
Evaluate the Actions bot against its already-computed token permission
instead of a user lookup, mirroring the existing
`IsUserMergeWhitelisted` pattern:
- Add `CanActionsUserPush` / `CanActionsUserForcePush` on
`ProtectedBranch`, which take the precomputed `access_model.Permission`.
- Allow the push when push is enabled, **no** push whitelist is
enforced, and the token has code-write.
- Keep the bot blocked when a whitelist is enforced — it cannot be added
to one, so it must use a pull request. This preserves the whitelist as a
real security boundary.
Force-push, signed-commit and protected-file-path checks are untouched.
Signed-off-by: bircni <bircni@icloud.com>
Co-authored-by: bircni <bircni@icloud.com>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
- Enforce org visibility on organization label read endpoints (private
org labels no longer leak to non-members).
- Block fork sync (`merge-upstream`) when the base repo is no longer
readable (stops pulling commits after a parent goes private).
- Remove `REVERSE_PROXY_LIMIT` / `REVERSE_PROXY_TRUSTED_PROXIES` from
the Docker `app.ini` templates (the `= *` default allowed
`X-WEBAUTH-USER` impersonation; reverse-proxy auth is now opt-in and
admin-configured).
- Enforce single-use TOTP passcodes across web login, password-reset,
and Basic-Auth `X-Gitea-OTP` (fixes a TOCTOU race and a stateless
replay).
- Re-check branch write permission for every ref in a push (the
pre-receive hook cached the first ref's result, letting a per-branch
maintainer-edit grant escalate to full repo write).
---------
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
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