AdGuard content blocking library

Pure GO library that implements AdGuard filtering rules syntax.

You can learn more about AdGuard filtering rules syntax from this article.

TODO:

• Basic filtering rules
  • Core blocking syntax
  • Basic engine
  • Basic rules validation (don't match everything, unexpected modifiers, etc)
  • Domain modifier semantics: AdguardTeam/AdguardBrowserExtension#1474
  • TLD support: https://kb.adguard.com/en/general/how-to-create-your-own-ad-filters#wildcard-for-tld
• Benchmark basic rules matching
• Hosts matching rules
  • /etc/hosts matching
  • $badfilter support for host-blocking network rules
• Memory optimization
• Tech document
• Cosmetic rules
  • Basic element hiding and CSS rules
    • Proper CSS rules validation
  • ExtCSS rules
    • ExtCSS rules validation
  • Scriptlet rules
  • JS rules
• Proxy implementation
  • Simple MITM proxy example
  • Add cosmetic filters to the proxy example
  • Handling cosmetic modifiers $elemhide, $generichide, $jsinject
  • (!) Server certificate verification - it should pass badssl.com/dashboard/
  • Use fetch metadata to detect the content type: https://www.w3.org/TR/fetch-metadata/
  • Unit tests coverage
  • Fix TODOs
  • Proxy - handle CSP (including tags with CSP)
  • Proxy - proper blocking page code
  • Proxy - unblocking via a temporary cookie
  • Proxy - content script caching
  • Proxy - content script compression
  • Proxy - brotli support (see here)
  • Content script - babel plugin
  • Content script - apply ExtCSS rules
  • Content script - styles protection
  • Content script - JS unit tests
  • Content script - GO unit tests
• HTML filtering rules
• Advanced modifiers
  • $important
  • $replace
  • $csp
  • $cookie
  • $redirect
  • $badfilter
  • $badfilter (AdguardTeam/CoreLibs#1241)
  • $ping modifier (AdguardTeam/CoreLibs#1258)

How to use

TODO