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Feat: salvage $document and $subdocument from filters
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SukkaW committed Dec 2, 2024
1 parent e8346d0 commit eaae6c2
Showing 1 changed file with 25 additions and 4 deletions.
29 changes: 25 additions & 4 deletions Build/lib/parse-filter.ts
Original file line number Diff line number Diff line change
Expand Up @@ -142,7 +142,7 @@ export async function processFilterRules(
ttl: number | null = null,
allowThirdParty = false
): Promise<{ white: string[], black: string[], foundDebugDomain: boolean }> {
const [white, black, warningMessages] = await parentSpan.traceChild(`process filter rules: ${filterRulesUrl}`).traceAsyncFn((span) => fsFetchCache.applyWithHttp304AndMirrors<Readonly<[ white: string[], black: string[], warningMessages: string[] ]>>(
const [white, black, warningMessages] = await parentSpan.traceChild(`process filter rules: ${filterRulesUrl}`).traceAsyncFn((span) => fsFetchCache.applyWithHttp304AndMirrors<Readonly<[white: string[], black: string[], warningMessages: string[]]>>(
filterRulesUrl,
fallbackUrls ?? [],
getFileContentHash(__filename),
Expand Down Expand Up @@ -334,13 +334,23 @@ export function parse($line: string, result: [string, ParseType], allowThirdPart
|| filter.isRedirectRule()
|| filter.hasDomains()
|| filter.isCSP() // must not be csp rule
|| (!filter.fromAny() && !filter.fromDocument())
|| (!filter.fromHttp() && !filter.fromHttps())
) {
// not supported type
result[1] = ParseType.Null;
return result;
}

if (
!filter.fromAny()
// $image, $websocket, $xhr this are all non-any
&& !filter.fromDocument() // $document, $doc
&& !filter.fromSubdocument() // $subdocument, $subdoc
) {
result[1] = ParseType.Null;
return result;
}

if (
filter.hostname // filter.hasHostname() // must have
&& filter.isPlain() // isPlain() === !isRegex()
Expand All @@ -366,10 +376,11 @@ export function parse($line: string, result: [string, ParseType], allowThirdPart
const _1p = filter.firstParty();
const _3p = filter.thirdParty();

if (_1p) {
if (_1p === _3p) {
if (_1p) { // first party is true
if (_3p) { // third party is also true
result[0] = hostname;
result[1] = isIncludeAllSubDomain ? ParseType.BlackIncludeSubdomain : ParseType.BlackAbsolute;

return result;
}
result[1] = ParseType.Null;
Expand Down Expand Up @@ -549,6 +560,16 @@ export function parse($line: string, result: [string, ParseType], allowThirdPart
return result;
}

// if (line.endsWith('$image')) {
// /**
// * Some $image filters are not NetworkFilter:
// *
// * `app.site123.com$image`
// * `t.signaux$image`
// * `track.customer.io$image`
// */
// }

const lineStartsWithSingleDot = firstCharCode === 46; // 46 `.`
if (
lineStartsWithSingleDot
Expand Down

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