gotosocial/web/template/nollamas.tmpl

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[feature] proof of work scraper deterrence (#4043) This adds a proof-of-work based scraper deterrence to GoToSocial's middleware stack on profile and status web pages. Heavily inspired by https://github.com/TecharoHQ/anubis, but massively stripped back for our own usecase. Todo: - ~~add configuration option so this is disabled by default~~ - ~~fix whatever weirdness is preventing this working with CSP (even in debug)~~ - ~~use our standard templating mechanism going through apiutil helper func~~ - ~~probably some absurdly small performance improvements to be made in pooling re-used hex encode / hash encode buffers~~ the web endpoints aren't as hot a path as API / ActivityPub, will leave as-is for now as it is already very minimal and well optimized - ~~verify the cryptographic assumptions re: using a portion of token as challenge data~~ this isn't a serious application of cryptography, if it turns out to be a problem we'll fix it, but it definitely should not be easily possible to guess a SHA256 hash from the first 1/4 of it even if mathematically it might make it a bit easier - ~~theme / make look nice??~~ - ~~add a spinner~~ - ~~add entry in example configuration~~ - ~~add documentation~~ Verification page originally based on https://github.com/LucienV1/powtect Co-authored-by: tobi <tobi.smethurst@protonmail.com> Reviewed-on: https://codeberg.org/superseriousbusiness/gotosocial/pulls/4043 Reviewed-by: tobi <tsmethurst@noreply.codeberg.org> Co-authored-by: kim <grufwub@gmail.com> Co-committed-by: kim <grufwub@gmail.com>
2025-04-28 20:12:27 +00:00
{{- /*
// GoToSocial
// Copyright (C) GoToSocial Authors admin@gotosocial.org
// SPDX-License-Identifier: AGPL-3.0-or-later
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
*/ -}}
{{- with . }}
<main>
<section class="nollamas"
[feature] update proof-of-work to allow setting required rounds (#4186) # Description This updates our proof-of-work middleware, NoLLaMas, to work on a more easily configurable algorithm (thank you f0x for bringing this to my attention!). Instead of requiring that a solution with pre-determined number of '0' chars be found, it now pre-computes a result with a pre-determined nonce value that it expects the client to iterate up-to. (though with some level of jitter applied, to prevent it being too-easily gamed). This allows the user to configure roughly how many hash-encode rounds they want their clients to have to complete. ## Checklist - [x] I/we have read the [GoToSocial contribution guidelines](https://codeberg.org/superseriousbusiness/gotosocial/src/branch/main/CONTRIBUTING.md). - [x] I/we have discussed the proposed changes already, either in an issue on the repository, or in the Matrix chat. - [x] I/we have not leveraged AI to create the proposed changes. - [x] I/we have performed a self-review of added code. - [x] I/we have written code that is legible and maintainable by others. - [x] I/we have commented the added code, particularly in hard-to-understand areas. - [x] I/we have made any necessary changes to documentation. - [ ] I/we have added tests that cover new code. - [x] I/we have run tests and they pass locally with the changes. - [x] I/we have run `go fmt ./...` and `golangci-lint run`. Reviewed-on: https://codeberg.org/superseriousbusiness/gotosocial/pulls/4186 Co-authored-by: kim <grufwub@gmail.com> Co-committed-by: kim <grufwub@gmail.com>
2025-05-26 09:57:50 +00:00
data-nollamas-seed="{{ .seed }}"
[feature] proof of work scraper deterrence (#4043) This adds a proof-of-work based scraper deterrence to GoToSocial's middleware stack on profile and status web pages. Heavily inspired by https://github.com/TecharoHQ/anubis, but massively stripped back for our own usecase. Todo: - ~~add configuration option so this is disabled by default~~ - ~~fix whatever weirdness is preventing this working with CSP (even in debug)~~ - ~~use our standard templating mechanism going through apiutil helper func~~ - ~~probably some absurdly small performance improvements to be made in pooling re-used hex encode / hash encode buffers~~ the web endpoints aren't as hot a path as API / ActivityPub, will leave as-is for now as it is already very minimal and well optimized - ~~verify the cryptographic assumptions re: using a portion of token as challenge data~~ this isn't a serious application of cryptography, if it turns out to be a problem we'll fix it, but it definitely should not be easily possible to guess a SHA256 hash from the first 1/4 of it even if mathematically it might make it a bit easier - ~~theme / make look nice??~~ - ~~add a spinner~~ - ~~add entry in example configuration~~ - ~~add documentation~~ Verification page originally based on https://github.com/LucienV1/powtect Co-authored-by: tobi <tobi.smethurst@protonmail.com> Reviewed-on: https://codeberg.org/superseriousbusiness/gotosocial/pulls/4043 Reviewed-by: tobi <tsmethurst@noreply.codeberg.org> Co-authored-by: kim <grufwub@gmail.com> Co-committed-by: kim <grufwub@gmail.com>
2025-04-28 20:12:27 +00:00
data-nollamas-challenge="{{ .challenge }}"
>
<h1>Checking you're not a creepy crawler...</h1>
<noscript>
<p>
The page you're visiting is guarded from "ai" scrapers
and other crawlers by a proof-of-work challenge.
</p>
<p>
Unfortunately, this means that Javascript is required.
To see the page, <b>please enable Javascript and try again</b>.
</p>
<aside>
Once your browser has completed the challenge, you can turn
Javascript off again if you like. Revalidation is done once per hour.
</aside>
</noscript>
</section>
</main>
{{- end }}