Xe Iaso 276b537776 fix(policy): correctly wire subrequest mode through CEL/path checkers (#1630)
* fix(policy): correctly wire subrequest mode through CEL/path checkers

Previously Anubis only checked for the X-Original-Url when using
subrequest mode. This header is used by the example nginx config to pass
the request path through from the original client request to Anubis in
order to do path-based filtering.

According to facts and circumstances, Traefik hardcodes its own
headers[1]:

```text
httpdebug-1  | GET /.within.website/x/cmd/anubis/api/check
httpdebug-1  | X-Forwarded-Method: GET
httpdebug-1  | X-Forwarded-Proto: http
httpdebug-1  | X-Forwarded-Server: b9a5d299c929
httpdebug-1  | X-Forwarded-Port: 8080
httpdebug-1  | X-Forwarded-Uri: /
httpdebug-1  | X-Real-Ip: 172.18.0.1
httpdebug-1  | Accept-Encoding: gzip
httpdebug-1  | User-Agent: curl/8.20.0
httpdebug-1  | Accept: */*
httpdebug-1  | X-Forwarded-For: 172.18.0.1
httpdebug-1  | X-Forwarded-Host: localhost:8080
```

As a result, this means that path-based filtering did not work.

This commit fixes this issue by amending how path based checking logic
works:

* For CEL based checks, this pipes through the `subrequestMode` flag from
  main and alters the behaviour if either `X-Original-Url` or
  `X-Forwarded-Url` are found. These values are currently hardcoded for
  convenience but probably need to be made configurable in the policy
  file at a future date.
* For path-based checks, this uses the existing `subrequestMode` flag
  from main and adds `X-Forwarded-Url` to the list of headers it checks.

A smoke test was added to make sure that traefik in this mode continues
to work. Thank you https://github.com/flifloo for filing a detailed
issue with the relevant configuration fragments. Those configuration
fragments formed the core of this smoke test.

[1]: https://doc.traefik.io/traefik/v3.4/middlewares/http/forwardauth/

Closes: https://github.com/TecharoHQ/anubis/issues/1628
Signed-off-by: Xe Iaso <me@xeiaso.net>
Co-Authored-By: flifloo <flifloo@gmail.com>

* chore: spelling

Signed-off-by: Xe Iaso <me@xeiaso.net>

---------

Signed-off-by: Xe Iaso <me@xeiaso.net>
Co-authored-by: flifloo <flifloo@gmail.com>
2026-05-14 21:37:02 -04:00
2025-03-17 19:33:07 -04:00
2025-03-17 19:33:07 -04:00
2026-02-18 15:56:28 +00:00

Anubis

A smiling chibi dark-skinned anthro jackal with brown hair and tall ears looking victorious with a thumbs-up

enbyware GitHub Issues or Pull Requests by label GitHub go.mod Go version language count repo size GitHub Sponsors

Sponsors

Anubis is brought to you by sponsors and donors like:

Diamond Tier

Raptor Computing Systems Databento

Gold Tier

Unipromos Uvensys Distrust Gitea Prolocation Terminal Trove canine.tools Weblate Uberspace Wildbase Cat eyes over the word Emma in a serif font Cat eyes over the word Emma in a serif font ANEXIA Cloud Solutions embeDD GmbH Qwertiko Wenet

Overview

Anubis is a Web AI Firewall Utility that weighs the soul of your connection using one or more challenges in order to protect upstream resources from scraper bots.

This program is designed to help protect the small internet from the endless storm of requests that flood in from AI companies. Anubis is as lightweight as possible to ensure that everyone can afford to protect the communities closest to them.

Anubis is a bit of a nuclear response. This will result in your website being blocked from smaller scrapers and may inhibit "good bots" like the Internet Archive. You can configure bot policy definitions to explicitly allowlist them and we are working on a curated set of "known good" bots to allow for a compromise between discoverability and uptime.

In most cases, you should not need this and can probably get by using Cloudflare to protect a given origin. However, for circumstances where you can't or won't use Cloudflare, Anubis is there for you.

If you want to try this out, visit the Anubis documentation site at anubis.techaro.lol.

Support

If you run into any issues running Anubis, please open an issue. Please include all the information I would need to diagnose your issue.

For live chat, please join the Patreon and ask in the Patron discord in the channel #anubis.

Star History

Star History Chart

Packaging Status

Packaging status

Contributors

Made with contrib.rocks.

S
Description
No description provided
Readme MIT 22 MiB
Languages
Go 88%
Shell 3.4%
TypeScript 3.4%
JavaScript 2.3%
templ 1.6%
Other 1.1%