From d8c4d9fc5a62741f0c4c2b692a3a94874714bbcc Mon Sep 17 00:00:00 2001 From: kim Date: Mon, 28 Apr 2025 20:12:27 +0000 Subject: [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 Reviewed-on: https://codeberg.org/superseriousbusiness/gotosocial/pulls/4043 Reviewed-by: tobi Co-authored-by: kim Co-committed-by: kim --- internal/config/config.go | 1 + 1 file changed, 1 insertion(+) (limited to 'internal/config/config.go') diff --git a/internal/config/config.go b/internal/config/config.go index 07676627d..88083d491 100644 --- a/internal/config/config.go +++ b/internal/config/config.go @@ -175,6 +175,7 @@ type Configuration struct { AdvancedSenderMultiplier int `name:"advanced-sender-multiplier" usage:"Multiplier to use per cpu for batching outgoing fedi messages. 0 or less turns batching off (not recommended)."` AdvancedCSPExtraURIs []string `name:"advanced-csp-extra-uris" usage:"Additional URIs to allow when building content-security-policy for media + images."` AdvancedHeaderFilterMode string `name:"advanced-header-filter-mode" usage:"Set incoming request header filtering mode."` + AdvancedScraperDeterrence bool `name:"advanced-scraper-deterrence" usage:"Enable proof-of-work based scraper deterrence on profile / status pages"` // HTTPClient configuration vars. HTTPClient HTTPClientConfiguration `name:"http-client"` -- cgit v1.2.3