mirror of https://github.com/gorhill/uBlock.git
Rework generic cosmetic filtering code
Related issue: - https://github.com/uBlockOrigin/uBlock-issues/issues/2248
This commit is contained in:
Raymond Hill
parent
76d70102f0
commit
26594fb902
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@ -176,8 +176,8 @@ const µBlock = { // jshint ignore:line
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// Read-only
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systemSettings: {
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compiledMagic: 47, // Increase when compiled format changes
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selfieMagic: 47, // Increase when selfie format changes
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compiledMagic: 48, // Increase when compiled format changes
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selfieMagic: 48, // Increase when selfie format changes
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},
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// https://github.com/uBlockOrigin/uBlock-issues/issues/759#issuecomment-546654501
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@ -945,72 +945,65 @@ vAPI.DOMFilterer = class {
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// vAPI.domSurveyor
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{
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const messaging = vAPI.messaging;
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const queriedIds = new Set();
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const queriedClasses = new Set();
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// https://werxltd.com/wp/2010/05/13/javascript-implementation-of-javas-string-hashcode-method/
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// Must mirror cosmetic filtering compiler's version
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const hashFromStr = (type, s) => {
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const len = s.length;
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const step = len + 7 >>> 3;
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let hash = (type << 5) - type + (len & 0xFF) | 0;
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for ( let i = 0; i < len; i += step ) {
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hash = (hash << 5) - hash + s.charCodeAt(i) | 0;
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}
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return hash & 0xFFFFFF;
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};
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const addHashes = hashes => {
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for ( const hash of hashes ) {
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queriedHashes.add(hash);
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}
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};
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const queriedHashes = new Set();
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const maxSurveyNodes = 65536;
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const maxSurveyTimeSlice = 4;
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const maxSurveyBuffer = 64;
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const pendingLists = [];
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const pendingNodes = [];
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const processedSet = new Set();
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let domFilterer;
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let hostname = '';
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let domChanged = false;
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let scannedCount = 0;
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let stopped = false;
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let domFilterer,
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hostname = '',
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surveyCost = 0;
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const addPendingList = list => {
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if ( list.length === 0 ) { return; }
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pendingLists.push(Array.from(list));
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};
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const pendingNodes = {
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nodeLists: [],
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buffer: [
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null, null, null, null, null, null, null, null,
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null, null, null, null, null, null, null, null,
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null, null, null, null, null, null, null, null,
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null, null, null, null, null, null, null, null,
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null, null, null, null, null, null, null, null,
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null, null, null, null, null, null, null, null,
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null, null, null, null, null, null, null, null,
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null, null, null, null, null, null, null, null,
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],
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j: 0,
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accepted: 0,
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iterated: 0,
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stopped: false,
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add(nodes) {
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if ( nodes.length === 0 || this.accepted >= maxSurveyNodes ) {
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return;
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const nextPendingNodes = ( ) => {
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if ( pendingLists.length === 0 ) { return 0; }
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const bufferSize = 256;
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let j = 0;
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do {
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const nodeList = pendingLists[0];
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let n = bufferSize - j;
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if ( n > nodeList.length ) {
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n = nodeList.length;
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}
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this.nodeLists.push(nodes);
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this.accepted += nodes.length;
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},
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next() {
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if ( this.nodeLists.length === 0 || this.stopped ) { return 0; }
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const nodeLists = this.nodeLists;
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let ib = 0;
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do {
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const nodeList = nodeLists[0];
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let j = this.j;
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let n = j + maxSurveyBuffer - ib;
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if ( n > nodeList.length ) {
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n = nodeList.length;
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}
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for ( let i = j; i < n; i++ ) {
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this.buffer[ib++] = nodeList[j++];
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}
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if ( j !== nodeList.length ) {
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this.j = j;
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break;
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}
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this.j = 0;
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this.nodeLists.shift();
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} while ( ib < maxSurveyBuffer && nodeLists.length !== 0 );
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this.iterated += ib;
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if ( this.iterated >= maxSurveyNodes ) {
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this.nodeLists = [];
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this.stopped = true;
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//console.info(`domSurveyor> Surveyed a total of ${this.iterated} nodes. Enough.`);
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for ( let i = 0; i < n; i++ ) {
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pendingNodes[j+i] = nodeList[i];
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}
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return ib;
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},
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hasNodes() {
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return this.nodeLists.length !== 0;
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},
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j += n;
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if ( n !== nodeList.length ) {
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pendingLists[0] = nodeList.slice(n);
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break;
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}
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pendingLists.shift();
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} while ( j < bufferSize && pendingLists.length !== 0 );
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return j;
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};
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const hasPendingNodes = ( ) => {
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return pendingLists.length !== 0;
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};
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// Extract all classes/ids: these will be passed to the cosmetic
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@ -1024,10 +1017,10 @@ vAPI.DOMFilterer = class {
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const idFromNode = (node, out) => {
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const raw = node.id;
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if ( typeof raw !== 'string' || raw.length === 0 ) { return; }
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const s = raw.trim();
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if ( queriedIds.has(s) || s.length === 0 ) { return; }
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out.push(s);
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queriedIds.add(s);
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const hash = hashFromStr(0x23 /* '#' */, raw.trim());
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if ( queriedHashes.has(hash) ) { return; }
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queriedHashes.add(hash);
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out.push(hash);
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};
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// https://github.com/uBlockOrigin/uBlock-issues/discussions/2076
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@ -1036,73 +1029,83 @@ vAPI.DOMFilterer = class {
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const s = node.getAttribute('class');
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if ( typeof s !== 'string' ) { return; }
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const len = s.length;
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for ( let beg = 0, end = 0, token = ''; beg < len; beg += 1 ) {
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for ( let beg = 0, end = 0; beg < len; beg += 1 ) {
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end = s.indexOf(' ', beg);
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if ( end === beg ) { continue; }
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if ( end === -1 ) { end = len; }
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token = s.slice(beg, end);
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const hash = hashFromStr(0x2E /* '.' */, s.slice(beg, end));
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beg = end;
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if ( queriedClasses.has(token) ) { continue; }
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out.push(token);
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queriedClasses.add(token);
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if ( queriedHashes.has(hash) ) { continue; }
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queriedHashes.add(hash);
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out.push(hash);
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}
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};
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const surveyPhase1 = function() {
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//console.time('dom surveyor/surveying');
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const getSurveyResults = hashes => {
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if ( self.vAPI.messaging instanceof Object === false ) {
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stop(); return;
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}
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const promise = hashes.length === 0
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? Promise.resolve(null)
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: self.vAPI.messaging.send('contentscript', {
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what: 'retrieveGenericCosmeticSelectors',
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hostname,
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hashes,
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exceptions: domFilterer.exceptions,
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});
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promise.then(response => {
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processSurveyResults(response);
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});
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};
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const doSurvey = ( ) => {
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const t0 = performance.now();
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const ids = [];
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const classes = [];
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const nodes = pendingNodes.buffer;
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const deadline = t0 + maxSurveyTimeSlice;
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const hashes = [];
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const nodes = pendingNodes;
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const deadline = t0 + 4;
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let processed = 0;
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let scanned = 0;
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for (;;) {
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const n = pendingNodes.next();
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const n = nextPendingNodes();
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if ( n === 0 ) { break; }
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for ( let i = 0; i < n; i++ ) {
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const node = nodes[i]; nodes[i] = null;
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idFromNode(node, ids);
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classesFromNode(node, classes);
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if ( domChanged ) {
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if ( processedSet.has(node) ) { continue; }
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processedSet.add(node);
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}
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idFromNode(node, hashes);
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classesFromNode(node, hashes);
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scanned += 1;
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}
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processed += n;
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if ( performance.now() >= deadline ) { break; }
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}
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const t1 = performance.now();
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surveyCost += t1 - t0;
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//console.info(`domSurveyor> Surveyed ${processed} nodes in ${(t1-t0).toFixed(2)} ms`);
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// Phase 2: Ask main process to lookup relevant cosmetic filters.
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if ( ids.length !== 0 || classes.length !== 0 ) {
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messaging.send('contentscript', {
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what: 'retrieveGenericCosmeticSelectors',
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hostname,
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ids, classes,
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exceptions: domFilterer.exceptions,
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cost: surveyCost,
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}).then(response => {
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surveyPhase3(response);
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});
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} else {
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surveyPhase3(null);
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//console.info(`[domSurveyor][${hostname}] Surveyed ${scanned}/${processed} nodes in ${(performance.now()-t0).toFixed(2)} ms: ${hashes.length} hashes`);
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scannedCount += scanned;
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if ( scannedCount >= maxSurveyNodes ) {
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stop();
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}
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//console.timeEnd('dom surveyor/surveying');
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processedSet.clear();
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getSurveyResults(hashes);
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};
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const surveyTimer = new vAPI.SafeAnimationFrame(surveyPhase1);
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const surveyTimer = new vAPI.SafeAnimationFrame(doSurvey);
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// This is to shutdown the surveyor if result of surveying keeps being
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// fruitless. This is useful on long-lived web page. I arbitrarily
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// picked 5 minutes before the surveyor is allowed to shutdown. I also
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// arbitrarily picked 256 misses before the surveyor is allowed to
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// shutdown.
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let canShutdownAfter = Date.now() + 300000,
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surveyingMissCount = 0;
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let canShutdownAfter = Date.now() + 300000;
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let surveyResultMissCount = 0;
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// Handle main process' response.
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const surveyPhase3 = function(response) {
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const processSurveyResults = response => {
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if ( stopped ) { return; }
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const result = response && response.result;
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let mustCommit = false;
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if ( result ) {
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const css = result.injectedCSS;
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if ( typeof css === 'string' && css.length !== 0 ) {
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@ -1114,99 +1117,86 @@ vAPI.DOMFilterer = class {
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domFilterer.exceptCSSRules(selectors);
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}
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}
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if ( pendingNodes.stopped === false ) {
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if ( pendingNodes.hasNodes() ) {
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surveyTimer.start(1);
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}
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if ( mustCommit ) {
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surveyingMissCount = 0;
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canShutdownAfter = Date.now() + 300000;
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return;
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}
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surveyingMissCount += 1;
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if ( surveyingMissCount < 256 || Date.now() < canShutdownAfter ) {
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return;
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}
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if ( hasPendingNodes() ) {
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surveyTimer.start(1);
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}
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//console.info('dom surveyor shutting down: too many misses');
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surveyTimer.clear();
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vAPI.domWatcher.removeListener(domWatcherInterface);
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vAPI.domSurveyor = null;
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if ( mustCommit ) {
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surveyResultMissCount = 0;
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canShutdownAfter = Date.now() + 300000;
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return;
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}
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surveyResultMissCount += 1;
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if ( surveyResultMissCount < 256 || Date.now() < canShutdownAfter ) {
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return;
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}
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//console.info(`[domSurveyor][${hostname}] Shutting down, too many misses`);
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stop();
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self.vAPI.messaging.send('contentscript', {
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what: 'disableGenericCosmeticFilteringSurveyor',
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hostname,
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});
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};
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const domWatcherInterface = {
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onDOMCreated: function() {
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if (
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self.vAPI instanceof Object === false ||
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vAPI.domSurveyor instanceof Object === false ||
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vAPI.domFilterer instanceof Object === false
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) {
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if ( self.vAPI instanceof Object ) {
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if ( vAPI.domWatcher instanceof Object ) {
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vAPI.domWatcher.removeListener(domWatcherInterface);
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}
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vAPI.domSurveyor = null;
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}
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return;
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}
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//console.time('dom surveyor/dom layout created');
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domFilterer = vAPI.domFilterer;
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pendingNodes.add(document.querySelectorAll(
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'[id]:not(html):not(body),[class]:not(html):not(body)'
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));
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surveyTimer.start();
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// https://github.com/uBlockOrigin/uBlock-issues/issues/1692
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// Look-up safe-only selectors to mitigate probability of
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// html/body elements of erroneously being targeted.
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const ids = [], classes = [];
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const hashes = [];
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if ( document.documentElement !== null ) {
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idFromNode(document.documentElement, ids);
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classesFromNode(document.documentElement, classes);
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idFromNode(document.documentElement, hashes);
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classesFromNode(document.documentElement, hashes);
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}
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if ( document.body !== null ) {
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idFromNode(document.body, ids);
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classesFromNode(document.body, classes);
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idFromNode(document.body, hashes);
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classesFromNode(document.body, hashes);
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}
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if ( ids.length !== 0 || classes.length !== 0 ) {
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messaging.send('contentscript', {
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what: 'retrieveGenericCosmeticSelectors',
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hostname,
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ids, classes,
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exceptions: domFilterer.exceptions,
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safeOnly: true,
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}).then(response => {
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surveyPhase3(response);
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});
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addPendingList(document.querySelectorAll(
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'[id]:not(html):not(body),[class]:not(html):not(body)'
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));
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if ( hasPendingNodes() ) {
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surveyTimer.start();
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}
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//console.timeEnd('dom surveyor/dom layout created');
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},
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onDOMChanged: function(addedNodes) {
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if ( addedNodes.length === 0 ) { return; }
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//console.time('dom surveyor/dom layout changed');
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domChanged = true;
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for ( const node of addedNodes ) {
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pendingNodes.add([ node ]);
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addPendingList([ node ]);
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if ( node.firstElementChild === null ) { continue; }
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pendingNodes.add(node.querySelectorAll(
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'[id]:not(html):not(body),[class]:not(html):not(body)'
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));
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addPendingList(
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node.querySelectorAll(
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'[id]:not(html):not(body),[class]:not(html):not(body)'
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)
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);
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}
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if ( pendingNodes.hasNodes() ) {
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if ( hasPendingNodes() ) {
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surveyTimer.start(1);
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}
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//console.timeEnd('dom surveyor/dom layout changed');
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}
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};
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const start = function(details) {
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if ( vAPI.domWatcher instanceof Object === false ) { return; }
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const start = details => {
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if ( self.vAPI instanceof Object === false ) { return; }
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if ( self.vAPI.domFilterer instanceof Object === false ) { return; }
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if ( self.vAPI.domWatcher instanceof Object === false ) { return; }
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hostname = details.hostname;
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vAPI.domWatcher.addListener(domWatcherInterface);
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self.vAPI.domWatcher.addListener(domWatcherInterface);
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};
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vAPI.domSurveyor = { start };
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const stop = ( ) => {
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stopped = true;
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pendingLists.length = 0;
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surveyTimer.clear();
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if ( self.vAPI instanceof Object === false ) { return; }
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if ( self.vAPI.domWatcher instanceof Object ) {
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self.vAPI.domWatcher.removeListener(domWatcherInterface);
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}
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self.vAPI.domSurveyor = null;
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};
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self.vAPI.domSurveyor = { start, addHashes };
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}
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/******************************************************************************/
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@ -1218,7 +1208,7 @@ vAPI.DOMFilterer = class {
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// to be launched if/when needed.
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{
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const bootstrapPhase2 = function() {
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const onDomReady = ( ) => {
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// This can happen on Firefox. For instance:
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// https://github.com/gorhill/uBlock/issues/1893
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if ( window.location === null ) { return; }
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@ -1279,9 +1269,8 @@ vAPI.DOMFilterer = class {
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// an object -- let's stay around, we may be given the opportunity
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// to try bootstrapping again later.
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const bootstrapPhase1 = function(response) {
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const onResponseReady = response => {
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if ( response instanceof Object === false ) { return; }
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vAPI.bootstrap = undefined;
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// cosmetic filtering engine aka 'cfe'
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@ -1308,7 +1297,7 @@ vAPI.DOMFilterer = class {
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vAPI.domSurveyor = null;
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} else {
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const domFilterer = vAPI.domFilterer = new vAPI.DOMFilterer();
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if ( noGenericCosmeticFiltering || cfeDetails.noDOMSurveying ) {
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if ( noGenericCosmeticFiltering || cfeDetails.disableSurveyor ) {
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vAPI.domSurveyor = null;
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}
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domFilterer.exceptions = cfeDetails.exceptionFilters;
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@ -1316,10 +1305,9 @@ vAPI.DOMFilterer = class {
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domFilterer.addProceduralSelectors(cfeDetails.proceduralFilters);
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domFilterer.exceptCSSRules(cfeDetails.exceptedFilters);
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domFilterer.convertedProceduralFilters = cfeDetails.convertedProceduralFilters;
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vAPI.userStylesheet.apply();
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}
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vAPI.userStylesheet.apply();
|
||||
|
||||
// Library of resources is located at:
|
||||
// https://github.com/gorhill/uBlock/blob/master/assets/ublock/resources.txt
|
||||
if ( scriptlets && typeof self.uBO_scriptletsInjected !== 'boolean' ) {
|
||||
|
|
@ -1328,26 +1316,18 @@ vAPI.DOMFilterer = class {
|
|||
vAPI.injectedScripts = scriptlets;
|
||||
}
|
||||
|
||||
if ( vAPI.domSurveyor instanceof Object ) {
|
||||
if ( vAPI.domSurveyor ) {
|
||||
if ( Array.isArray(cfeDetails.genericCosmeticHashes) ) {
|
||||
vAPI.domSurveyor.addHashes(cfeDetails.genericCosmeticHashes);
|
||||
}
|
||||
vAPI.domSurveyor.start(cfeDetails);
|
||||
}
|
||||
|
||||
// https://github.com/chrisaljoudi/uBlock/issues/587
|
||||
// If no filters were found, maybe the script was injected before
|
||||
// uBlock's process was fully initialized. When this happens, pages
|
||||
// won't be cleaned right after browser launch.
|
||||
if (
|
||||
typeof document.readyState === 'string' &&
|
||||
document.readyState !== 'loading'
|
||||
) {
|
||||
bootstrapPhase2();
|
||||
} else {
|
||||
document.addEventListener(
|
||||
'DOMContentLoaded',
|
||||
bootstrapPhase2,
|
||||
{ once: true }
|
||||
);
|
||||
const readyState = document.readyState;
|
||||
if ( readyState === 'interactive' || readyState === 'complete' ) {
|
||||
return onDomReady();
|
||||
}
|
||||
document.addEventListener('DOMContentLoaded', onDomReady, { once: true });
|
||||
};
|
||||
|
||||
vAPI.bootstrap = function() {
|
||||
|
|
@ -1356,7 +1336,7 @@ vAPI.DOMFilterer = class {
|
|||
url: vAPI.effectiveSelf.location.href,
|
||||
needScriptlets: typeof self.uBO_scriptletsInjected !== 'boolean',
|
||||
}).then(response => {
|
||||
bootstrapPhase1(response);
|
||||
onResponseReady(response);
|
||||
});
|
||||
};
|
||||
}
|
||||
|
|
|
|||
|
|
@ -32,12 +32,6 @@ import {
|
|||
StaticExtFilteringSessionDB,
|
||||
} from './static-ext-filtering-db.js';
|
||||
|
||||
/******************************************************************************/
|
||||
|
||||
const cosmeticSurveyingMissCountMax =
|
||||
parseInt(vAPI.localStorage.getItem('cosmeticSurveyingMissCountMax'), 10) ||
|
||||
15;
|
||||
|
||||
/******************************************************************************/
|
||||
/******************************************************************************/
|
||||
|
||||
|
|
@ -48,71 +42,55 @@ const SelectorCacheEntry = class {
|
|||
|
||||
reset() {
|
||||
this.cosmetic = new Set();
|
||||
this.cosmeticSurveyingMissCount = 0;
|
||||
this.cosmeticHashes = new Set();
|
||||
this.disableSurveyor = false;
|
||||
this.net = new Map();
|
||||
this.lastAccessTime = Date.now();
|
||||
this.accessId = SelectorCacheEntry.accessId++;
|
||||
return this;
|
||||
}
|
||||
|
||||
dispose() {
|
||||
this.cosmetic = this.net = null;
|
||||
this.cosmetic = this.cosmeticHashes = this.net = null;
|
||||
if ( SelectorCacheEntry.junkyard.length < 25 ) {
|
||||
SelectorCacheEntry.junkyard.push(this);
|
||||
}
|
||||
}
|
||||
|
||||
addCosmetic(details) {
|
||||
const selectors = details.selectors;
|
||||
let i = selectors.length || 0;
|
||||
// https://github.com/gorhill/uBlock/issues/2011
|
||||
// Avoiding seemingly pointless surveys only if they appear costly.
|
||||
if ( details.first && i === 0 ) {
|
||||
if ( (details.cost || 0) >= 80 ) {
|
||||
this.cosmeticSurveyingMissCount += 1;
|
||||
}
|
||||
return;
|
||||
const selectors = details.selectors.join(',\n');
|
||||
if ( selectors.length !== 0 ) {
|
||||
this.cosmetic.add(selectors);
|
||||
}
|
||||
this.cosmeticSurveyingMissCount = 0;
|
||||
while ( i-- ) {
|
||||
this.cosmetic.add(selectors[i]);
|
||||
for ( const hash of details.hashes ) {
|
||||
this.cosmeticHashes.add(hash);
|
||||
}
|
||||
}
|
||||
|
||||
addNet(selectors) {
|
||||
if ( typeof selectors === 'string' ) {
|
||||
this.addNetOne(selectors, Date.now());
|
||||
this.net.set(selectors, this.accessId);
|
||||
} else {
|
||||
this.addNetMany(selectors, Date.now());
|
||||
this.net.set(selectors.join(',\n'), this.accessId);
|
||||
}
|
||||
// Net request-derived selectors: I limit the number of cached
|
||||
// selectors, as I expect cases where the blocked net-requests
|
||||
// selectors, as I expect cases where the blocked network requests
|
||||
// are never the exact same URL.
|
||||
if ( this.net.size < SelectorCacheEntry.netHighWaterMark ) {
|
||||
return;
|
||||
}
|
||||
const dict = this.net;
|
||||
const keys = Array.from(dict.keys()).sort(function(a, b) {
|
||||
return dict.get(b) - dict.get(a);
|
||||
}).slice(SelectorCacheEntry.netLowWaterMark);
|
||||
let i = keys.length;
|
||||
while ( i-- ) {
|
||||
dict.delete(keys[i]);
|
||||
if ( this.net.size < SelectorCacheEntry.netHighWaterMark ) { return; }
|
||||
const keys = Array.from(this.net)
|
||||
.sort((a, b) => b[1] - a[1])
|
||||
.slice(SelectorCacheEntry.netLowWaterMark)
|
||||
.map(a => a[0]);
|
||||
for ( const key of keys ) {
|
||||
this.net.delete(key);
|
||||
}
|
||||
}
|
||||
|
||||
addNetOne(selector, now) {
|
||||
this.net.set(selector, now);
|
||||
}
|
||||
|
||||
addNetMany(selectors, now) {
|
||||
let i = selectors.length || 0;
|
||||
while ( i-- ) {
|
||||
this.net.set(selectors[i], now);
|
||||
}
|
||||
addNetOne(selector, token) {
|
||||
this.net.set(selector, token);
|
||||
}
|
||||
|
||||
add(details) {
|
||||
this.lastAccessTime = Date.now();
|
||||
this.accessId = SelectorCacheEntry.accessId++;
|
||||
if ( details.type === 'cosmetic' ) {
|
||||
this.addCosmetic(details);
|
||||
} else {
|
||||
|
|
@ -122,10 +100,9 @@ const SelectorCacheEntry = class {
|
|||
|
||||
// https://github.com/chrisaljoudi/uBlock/issues/420
|
||||
remove(type) {
|
||||
this.lastAccessTime = Date.now();
|
||||
this.accessId = SelectorCacheEntry.accessId++;
|
||||
if ( type === undefined || type === 'cosmetic' ) {
|
||||
this.cosmetic.clear();
|
||||
this.cosmeticSurveyingMissCount = 0;
|
||||
}
|
||||
if ( type === undefined || type === 'net' ) {
|
||||
this.net.clear();
|
||||
|
|
@ -133,36 +110,41 @@ const SelectorCacheEntry = class {
|
|||
}
|
||||
|
||||
retrieveToArray(iterator, out) {
|
||||
for ( let selector of iterator ) {
|
||||
for ( const selector of iterator ) {
|
||||
out.push(selector);
|
||||
}
|
||||
}
|
||||
|
||||
retrieveToSet(iterator, out) {
|
||||
for ( let selector of iterator ) {
|
||||
for ( const selector of iterator ) {
|
||||
out.add(selector);
|
||||
}
|
||||
}
|
||||
|
||||
retrieve(type, out) {
|
||||
this.lastAccessTime = Date.now();
|
||||
const iterator = type === 'cosmetic' ? this.cosmetic : this.net.keys();
|
||||
if ( Array.isArray(out) ) {
|
||||
this.retrieveToArray(iterator, out);
|
||||
} else {
|
||||
this.retrieveToSet(iterator, out);
|
||||
}
|
||||
retrieveNet(out) {
|
||||
this.accessId = SelectorCacheEntry.accessId++;
|
||||
if ( this.net.size === 0 ) { return false; }
|
||||
this.retrieveToArray(this.net.keys(), out);
|
||||
return true;
|
||||
}
|
||||
|
||||
retrieveCosmetic(selectors, hashes) {
|
||||
this.accessId = SelectorCacheEntry.accessId++;
|
||||
if ( this.cosmetic.size === 0 ) { return false; }
|
||||
this.retrieveToSet(this.cosmetic, selectors);
|
||||
this.retrieveToArray(this.cosmeticHashes, hashes);
|
||||
return true;
|
||||
}
|
||||
|
||||
static factory() {
|
||||
const entry = SelectorCacheEntry.junkyard.pop();
|
||||
if ( entry ) {
|
||||
return entry.reset();
|
||||
}
|
||||
return new SelectorCacheEntry();
|
||||
return entry
|
||||
? entry.reset()
|
||||
: new SelectorCacheEntry();
|
||||
}
|
||||
};
|
||||
|
||||
SelectorCacheEntry.accessId = 1;
|
||||
SelectorCacheEntry.netLowWaterMark = 20;
|
||||
SelectorCacheEntry.netHighWaterMark = 30;
|
||||
SelectorCacheEntry.junkyard = [];
|
||||
|
|
@ -170,6 +152,61 @@ SelectorCacheEntry.junkyard = [];
|
|||
/******************************************************************************/
|
||||
/******************************************************************************/
|
||||
|
||||
// https://werxltd.com/wp/2010/05/13/javascript-implementation-of-javas-string-hashcode-method/
|
||||
// Must mirror content script surveyor's version
|
||||
|
||||
const hashFromStr = (type, s) => {
|
||||
const len = s.length;
|
||||
const step = len + 7 >>> 3;
|
||||
let hash = (type << 5) - type + (len & 0xFF) | 0;
|
||||
for ( let i = 0; i < len; i += step ) {
|
||||
hash = (hash << 5) - hash + s.charCodeAt(i) | 0;
|
||||
}
|
||||
return hash & 0xFFFFFF;
|
||||
};
|
||||
|
||||
// https://github.com/gorhill/uBlock/issues/1668
|
||||
// The key must be literal: unescape escaped CSS before extracting key.
|
||||
// It's an uncommon case, so it's best to unescape only when needed.
|
||||
|
||||
const keyFromSelector = selector => {
|
||||
let matches = rePlainSelector.exec(selector);
|
||||
if ( matches === null ) {
|
||||
matches = rePlainSelectorEx.exec(selector);
|
||||
if ( matches !== null ) { return matches[1] || matches[2]; }
|
||||
return;
|
||||
}
|
||||
let key = matches[0];
|
||||
if ( key.includes('\\') === false ) { return key; }
|
||||
matches = rePlainSelectorEscaped.exec(selector);
|
||||
if ( matches === null ) { return; }
|
||||
key = '';
|
||||
const escaped = matches[0];
|
||||
let beg = 0;
|
||||
reEscapeSequence.lastIndex = 0;
|
||||
for (;;) {
|
||||
matches = reEscapeSequence.exec(escaped);
|
||||
if ( matches === null ) {
|
||||
return key + escaped.slice(beg);
|
||||
}
|
||||
key += escaped.slice(beg, matches.index);
|
||||
beg = reEscapeSequence.lastIndex;
|
||||
if ( matches[1].length === 1 ) {
|
||||
key += matches[1];
|
||||
} else {
|
||||
key += String.fromCharCode(parseInt(matches[1], 16));
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
const rePlainSelector = /^[#.][\w\\-]+/;
|
||||
const rePlainSelectorEx = /^[^#.\[(]+([#.][\w-]+)|([#.][\w-]+)$/;
|
||||
const rePlainSelectorEscaped = /^[#.](?:\\[0-9A-Fa-f]+ |\\.|\w|-)+/;
|
||||
const reEscapeSequence = /\\([0-9A-Fa-f]+ |.)/g;
|
||||
|
||||
/******************************************************************************/
|
||||
/******************************************************************************/
|
||||
|
||||
// Cosmetic filter family tree:
|
||||
//
|
||||
// Generic
|
||||
|
|
@ -186,18 +223,12 @@ SelectorCacheEntry.junkyard = [];
|
|||
// Specific filers can be enforced before the main document is loaded.
|
||||
|
||||
const FilterContainer = function() {
|
||||
this.rePlainSelector = /^[#.][\w\\-]+/;
|
||||
this.rePlainSelectorEscaped = /^[#.](?:\\[0-9A-Fa-f]+ |\\.|\w|-)+/;
|
||||
this.rePlainSelectorEx = /^[^#.\[(]+([#.][\w-]+)|([#.][\w-]+)$/;
|
||||
this.reEscapeSequence = /\\([0-9A-Fa-f]+ |.)/g;
|
||||
this.reSimpleHighGeneric = /^(?:[a-z]*\[[^\]]+\]|\S+)$/;
|
||||
this.reHighMedium = /^\[href\^="https?:\/\/([^"]{8})[^"]*"\]$/;
|
||||
|
||||
this.selectorCache = new Map();
|
||||
this.selectorCachePruneDelay = 10 * 60 * 1000; // 10 minutes
|
||||
this.selectorCacheAgeMax = 120 * 60 * 1000; // 120 minutes
|
||||
this.selectorCacheCountMin = 25;
|
||||
this.netSelectorCacheCountMax = SelectorCacheEntry.netHighWaterMark;
|
||||
this.selectorCacheCountMin = 40;
|
||||
this.selectorCacheCountMax = 50;
|
||||
this.selectorCacheTimer = null;
|
||||
|
||||
// specific filters
|
||||
|
|
@ -206,20 +237,8 @@ const FilterContainer = function() {
|
|||
// temporary filters
|
||||
this.sessionFilterDB = new StaticExtFilteringSessionDB();
|
||||
|
||||
// low generic cosmetic filters, organized by id/class then simple/complex.
|
||||
this.lowlyGeneric = Object.create(null);
|
||||
this.lowlyGeneric.id = {
|
||||
canonical: 'ids',
|
||||
prefix: '#',
|
||||
simple: new Set(),
|
||||
complex: new Map()
|
||||
};
|
||||
this.lowlyGeneric.cl = {
|
||||
canonical: 'classes',
|
||||
prefix: '.',
|
||||
simple: new Set(),
|
||||
complex: new Map()
|
||||
};
|
||||
// low generic cosmetic filters: map of hash => array of selectors
|
||||
this.lowlyGeneric = new Map();
|
||||
|
||||
// highly generic selectors sets
|
||||
this.highlyGeneric = Object.create(null);
|
||||
|
|
@ -240,8 +259,6 @@ const FilterContainer = function() {
|
|||
// is to prevent repeated allocation/deallocation overheads -- the
|
||||
// constructors/destructors of javascript Set/Map is assumed to be costlier
|
||||
// than just calling clear() on these.
|
||||
this.$simpleSet = new Set();
|
||||
this.$complexSet = new Set();
|
||||
this.$specificSet = new Set();
|
||||
this.$exceptionSet = new Set();
|
||||
this.$proceduralSet = new Set();
|
||||
|
|
@ -266,17 +283,11 @@ FilterContainer.prototype.reset = function() {
|
|||
this.selectorCacheTimer = null;
|
||||
}
|
||||
|
||||
// whether there is at least one surveyor-based filter
|
||||
this.needDOMSurveyor = false;
|
||||
|
||||
// hostname, entity-based filters
|
||||
this.specificFilters.clear();
|
||||
|
||||
// low generic cosmetic filters, organized by id/class then simple/complex.
|
||||
this.lowlyGeneric.id.simple.clear();
|
||||
this.lowlyGeneric.id.complex.clear();
|
||||
this.lowlyGeneric.cl.simple.clear();
|
||||
this.lowlyGeneric.cl.complex.clear();
|
||||
// low generic cosmetic filters
|
||||
this.lowlyGeneric.clear();
|
||||
|
||||
// highly generic selectors sets
|
||||
this.highlyGeneric.simple.dict.clear();
|
||||
|
|
@ -285,6 +296,8 @@ FilterContainer.prototype.reset = function() {
|
|||
this.highlyGeneric.complex.dict.clear();
|
||||
this.highlyGeneric.complex.str = '';
|
||||
this.highlyGeneric.complex.mru.reset();
|
||||
|
||||
this.selfieVersion = 1;
|
||||
};
|
||||
|
||||
/******************************************************************************/
|
||||
|
|
@ -293,12 +306,6 @@ FilterContainer.prototype.freeze = function() {
|
|||
this.duplicateBuster.clear();
|
||||
this.specificFilters.collectGarbage();
|
||||
|
||||
this.needDOMSurveyor =
|
||||
this.lowlyGeneric.id.simple.size !== 0 ||
|
||||
this.lowlyGeneric.id.complex.size !== 0 ||
|
||||
this.lowlyGeneric.cl.simple.size !== 0 ||
|
||||
this.lowlyGeneric.cl.complex.size !== 0;
|
||||
|
||||
this.highlyGeneric.simple.str = Array.from(this.highlyGeneric.simple.dict).join(',\n');
|
||||
this.highlyGeneric.simple.mru.reset();
|
||||
this.highlyGeneric.complex.str = Array.from(this.highlyGeneric.complex.dict).join(',\n');
|
||||
|
|
@ -309,40 +316,6 @@ FilterContainer.prototype.freeze = function() {
|
|||
|
||||
/******************************************************************************/
|
||||
|
||||
// https://github.com/gorhill/uBlock/issues/1668
|
||||
// The key must be literal: unescape escaped CSS before extracting key.
|
||||
// It's an uncommon case, so it's best to unescape only when needed.
|
||||
|
||||
FilterContainer.prototype.keyFromSelector = function(selector) {
|
||||
let matches = this.rePlainSelector.exec(selector);
|
||||
if ( matches === null ) { return; }
|
||||
let key = matches[0];
|
||||
if ( key.indexOf('\\') === -1 ) {
|
||||
return key;
|
||||
}
|
||||
matches = this.rePlainSelectorEscaped.exec(selector);
|
||||
if ( matches === null ) { return; }
|
||||
key = '';
|
||||
const escaped = matches[0];
|
||||
let beg = 0;
|
||||
this.reEscapeSequence.lastIndex = 0;
|
||||
for (;;) {
|
||||
matches = this.reEscapeSequence.exec(escaped);
|
||||
if ( matches === null ) {
|
||||
return key + escaped.slice(beg);
|
||||
}
|
||||
key += escaped.slice(beg, matches.index);
|
||||
beg = this.reEscapeSequence.lastIndex;
|
||||
if ( matches[1].length === 1 ) {
|
||||
key += matches[1];
|
||||
} else {
|
||||
key += String.fromCharCode(parseInt(matches[1], 16));
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
/******************************************************************************/
|
||||
|
||||
FilterContainer.prototype.compile = function(parser, writer) {
|
||||
if ( parser.hasOptions() === false ) {
|
||||
this.compileGenericSelector(parser, writer);
|
||||
|
|
@ -396,38 +369,8 @@ FilterContainer.prototype.compileGenericHideSelector = function(
|
|||
|
||||
writer.select('COSMETIC_FILTERS:GENERIC');
|
||||
|
||||
const type = compiled.charCodeAt(0);
|
||||
let key;
|
||||
|
||||
// Simple selector-based CSS rule: no need to test for whether the
|
||||
// selector is valid, the regex took care of this. Most generic selector
|
||||
// falls into that category:
|
||||
// - ###ad-bigbox
|
||||
// - ##.ads-bigbox
|
||||
if ( type === 0x23 /* '#' */ ) {
|
||||
key = this.keyFromSelector(compiled);
|
||||
if ( key === compiled ) {
|
||||
writer.push([ 0, key.slice(1) ]);
|
||||
return;
|
||||
}
|
||||
} else if ( type === 0x2E /* '.' */ ) {
|
||||
key = this.keyFromSelector(compiled);
|
||||
if ( key === compiled ) {
|
||||
writer.push([ 2, key.slice(1) ]);
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
// Invalid cosmetic filter, possible reasons:
|
||||
// - Bad syntax
|
||||
// - Procedural filters (can't be generic): the compiled version of
|
||||
// a procedural selector is NEVER equal to its raw version.
|
||||
// https://github.com/uBlockOrigin/uBlock-issues/issues/464
|
||||
// Pseudoclass-based selectors can be compiled, but are also valid
|
||||
// plain selectors.
|
||||
// https://github.com/uBlockOrigin/uBlock-issues/issues/131
|
||||
// Support generic procedural filters as per advanced settings.
|
||||
// TODO: prevent double compilation.
|
||||
if ( compiled.charCodeAt(0) === 0x7B /* '{' */ ) {
|
||||
if ( µb.hiddenSettings.allowGenericProceduralFilters === true ) {
|
||||
return this.compileSpecificSelector(parser, '', false, writer);
|
||||
|
|
@ -441,28 +384,12 @@ FilterContainer.prototype.compileGenericHideSelector = function(
|
|||
return;
|
||||
}
|
||||
|
||||
// Complex selector-based CSS rule:
|
||||
// - ###tads + div + .c
|
||||
// - ##.rscontainer > .ellip
|
||||
const key = keyFromSelector(compiled);
|
||||
if ( key !== undefined ) {
|
||||
writer.push([
|
||||
type === 0x23 /* '#' */ ? 1 : 3,
|
||||
key.slice(1),
|
||||
compiled
|
||||
]);
|
||||
return;
|
||||
}
|
||||
|
||||
// https://github.com/gorhill/uBlock/issues/909
|
||||
// Anything which contains a plain id/class selector can be classified
|
||||
// as a low generic cosmetic filter.
|
||||
const matches = this.rePlainSelectorEx.exec(compiled);
|
||||
if ( matches !== null ) {
|
||||
const key = matches[1] || matches[2];
|
||||
writer.push([
|
||||
key.charCodeAt(0) === 0x23 /* '#' */ ? 1 : 3,
|
||||
key.slice(1),
|
||||
compiled
|
||||
0,
|
||||
hashFromStr(key.charCodeAt(0), key.slice(1)),
|
||||
compiled,
|
||||
]);
|
||||
return;
|
||||
}
|
||||
|
|
@ -618,36 +545,13 @@ FilterContainer.prototype.fromCompiledContent = function(reader, options) {
|
|||
this.duplicateBuster.add(fingerprint);
|
||||
const args = reader.args();
|
||||
switch ( args[0] ) {
|
||||
// low generic, simple
|
||||
case 0: // #AdBanner
|
||||
case 2: { // .largeAd
|
||||
const db = args[0] === 0 ? this.lowlyGeneric.id : this.lowlyGeneric.cl;
|
||||
const bucket = db.complex.get(args[1]);
|
||||
if ( bucket === undefined ) {
|
||||
db.simple.add(args[1]);
|
||||
} else if ( Array.isArray(bucket) ) {
|
||||
bucket.push(db.prefix + args[1]);
|
||||
// low generic
|
||||
case 0: {
|
||||
if ( this.lowlyGeneric.has(args[1]) ) {
|
||||
const selector = this.lowlyGeneric.get(args[1]);
|
||||
this.lowlyGeneric.set(args[1], `${selector},\n${args[2]}`);
|
||||
} else {
|
||||
db.complex.set(args[1], [ bucket, db.prefix + args[1] ]);
|
||||
}
|
||||
break;
|
||||
}
|
||||
// low generic, complex
|
||||
case 1: // #tads + div + .c
|
||||
case 3: { // .Mpopup + #Mad > #MadZone
|
||||
const db = args[0] === 1 ? this.lowlyGeneric.id : this.lowlyGeneric.cl;
|
||||
const bucket = db.complex.get(args[1]);
|
||||
if ( bucket === undefined ) {
|
||||
if ( db.simple.has(args[1]) ) {
|
||||
db.complex.set(args[1], [ db.prefix + args[1], args[2] ]);
|
||||
} else {
|
||||
db.complex.set(args[1], args[2]);
|
||||
db.simple.add(args[1]);
|
||||
}
|
||||
} else if ( Array.isArray(bucket) ) {
|
||||
bucket.push(args[2]);
|
||||
} else {
|
||||
db.complex.set(args[1], [ bucket, args[2] ]);
|
||||
this.lowlyGeneric.set(args[1], args[2]);
|
||||
}
|
||||
break;
|
||||
}
|
||||
|
|
@ -682,13 +586,11 @@ FilterContainer.prototype.skipCompiledContent = function(reader, sectionId) {
|
|||
|
||||
FilterContainer.prototype.toSelfie = function() {
|
||||
return {
|
||||
version: this.selfieVersion,
|
||||
acceptedCount: this.acceptedCount,
|
||||
discardedCount: this.discardedCount,
|
||||
specificFilters: this.specificFilters.toSelfie(),
|
||||
lowlyGenericSID: Array.from(this.lowlyGeneric.id.simple),
|
||||
lowlyGenericCID: Array.from(this.lowlyGeneric.id.complex),
|
||||
lowlyGenericSCL: Array.from(this.lowlyGeneric.cl.simple),
|
||||
lowlyGenericCCL: Array.from(this.lowlyGeneric.cl.complex),
|
||||
lowlyGeneric: Array.from(this.lowlyGeneric),
|
||||
highSimpleGenericHideArray: Array.from(this.highlyGeneric.simple.dict),
|
||||
highComplexGenericHideArray: Array.from(this.highlyGeneric.complex.dict),
|
||||
};
|
||||
|
|
@ -697,22 +599,19 @@ FilterContainer.prototype.toSelfie = function() {
|
|||
/******************************************************************************/
|
||||
|
||||
FilterContainer.prototype.fromSelfie = function(selfie) {
|
||||
if ( selfie.version !== this.selfieVersion ) {
|
||||
throw new Error(
|
||||
`cosmeticFilteringEngine: mismatched selfie version, ${selfie.version}, expected ${this.selfieVersion}`
|
||||
);
|
||||
}
|
||||
this.acceptedCount = selfie.acceptedCount;
|
||||
this.discardedCount = selfie.discardedCount;
|
||||
this.specificFilters.fromSelfie(selfie.specificFilters);
|
||||
this.lowlyGeneric.id.simple = new Set(selfie.lowlyGenericSID);
|
||||
this.lowlyGeneric.id.complex = new Map(selfie.lowlyGenericCID);
|
||||
this.lowlyGeneric.cl.simple = new Set(selfie.lowlyGenericSCL);
|
||||
this.lowlyGeneric.cl.complex = new Map(selfie.lowlyGenericCCL);
|
||||
this.lowlyGeneric = new Map(selfie.lowlyGeneric);
|
||||
this.highlyGeneric.simple.dict = new Set(selfie.highSimpleGenericHideArray);
|
||||
this.highlyGeneric.simple.str = selfie.highSimpleGenericHideArray.join(',\n');
|
||||
this.highlyGeneric.complex.dict = new Set(selfie.highComplexGenericHideArray);
|
||||
this.highlyGeneric.complex.str = selfie.highComplexGenericHideArray.join(',\n');
|
||||
this.needDOMSurveyor =
|
||||
selfie.lowlyGenericSID.length !== 0 ||
|
||||
selfie.lowlyGenericCID.length !== 0 ||
|
||||
selfie.lowlyGenericSCL.length !== 0 ||
|
||||
selfie.lowlyGenericCCL.length !== 0;
|
||||
this.frozen = true;
|
||||
};
|
||||
|
||||
|
|
@ -721,12 +620,11 @@ FilterContainer.prototype.fromSelfie = function(selfie) {
|
|||
FilterContainer.prototype.triggerSelectorCachePruner = function() {
|
||||
// Of interest: http://fitzgeraldnick.com/weblog/40/
|
||||
// http://googlecode.blogspot.ca/2009/07/gmail-for-mobile-html5-series-using.html
|
||||
if ( this.selectorCacheTimer === null ) {
|
||||
this.selectorCacheTimer = vAPI.setTimeout(
|
||||
this.pruneSelectorCacheAsync.bind(this),
|
||||
this.selectorCachePruneDelay
|
||||
);
|
||||
}
|
||||
if ( this.selectorCacheTimer !== null ) { return; }
|
||||
this.selectorCacheTimer = vAPI.setTimeout(
|
||||
( ) => { this.pruneSelectorCacheAsync(); },
|
||||
this.selectorCachePruneDelay
|
||||
);
|
||||
};
|
||||
|
||||
/******************************************************************************/
|
||||
|
|
@ -740,7 +638,7 @@ FilterContainer.prototype.addToSelectorCache = function(details) {
|
|||
if ( entry === undefined ) {
|
||||
entry = SelectorCacheEntry.factory();
|
||||
this.selectorCache.set(hostname, entry);
|
||||
if ( this.selectorCache.size > this.selectorCacheCountMin ) {
|
||||
if ( this.selectorCache.size > this.selectorCacheCountMax ) {
|
||||
this.triggerSelectorCachePruner();
|
||||
}
|
||||
}
|
||||
|
|
@ -753,7 +651,7 @@ FilterContainer.prototype.removeFromSelectorCache = function(
|
|||
targetHostname = '*',
|
||||
type = undefined
|
||||
) {
|
||||
let targetHostnameLength = targetHostname.length;
|
||||
const targetHostnameLength = targetHostname.length;
|
||||
for ( let entry of this.selectorCache ) {
|
||||
let hostname = entry[0];
|
||||
let item = entry[1];
|
||||
|
|
@ -772,46 +670,27 @@ FilterContainer.prototype.removeFromSelectorCache = function(
|
|||
|
||||
/******************************************************************************/
|
||||
|
||||
FilterContainer.prototype.retrieveFromSelectorCache = function(
|
||||
hostname,
|
||||
type,
|
||||
out
|
||||
) {
|
||||
let entry = this.selectorCache.get(hostname);
|
||||
if ( entry !== undefined ) {
|
||||
entry.retrieve(type, out);
|
||||
FilterContainer.prototype.pruneSelectorCacheAsync = function() {
|
||||
this.selectorCacheTimer = null;
|
||||
if ( this.selectorCache.size <= this.selectorCacheCountMax ) { return; }
|
||||
const cache = this.selectorCache;
|
||||
const hostnames = Array.from(cache.keys())
|
||||
.sort((a, b) => cache.get(b).accessId - cache.get(a).accessId)
|
||||
.slice(this.selectorCacheCountMin);
|
||||
for ( const hn of hostnames ) {
|
||||
cache.get(hn).dispose();
|
||||
cache.delete(hn);
|
||||
}
|
||||
};
|
||||
|
||||
/******************************************************************************/
|
||||
|
||||
FilterContainer.prototype.pruneSelectorCacheAsync = function() {
|
||||
this.selectorCacheTimer = null;
|
||||
if ( this.selectorCache.size <= this.selectorCacheCountMin ) { return; }
|
||||
let cache = this.selectorCache;
|
||||
// Sorted from most-recently-used to least-recently-used, because
|
||||
// we loop beginning at the end below.
|
||||
// We can't avoid sorting because we have to keep a minimum number of
|
||||
// entries, and these entries should always be the most-recently-used.
|
||||
let hostnames = Array.from(cache.keys())
|
||||
.sort(function(a, b) {
|
||||
return cache.get(b).lastAccessTime -
|
||||
cache.get(a).lastAccessTime;
|
||||
})
|
||||
.slice(this.selectorCacheCountMin);
|
||||
let obsolete = Date.now() - this.selectorCacheAgeMax,
|
||||
i = hostnames.length;
|
||||
while ( i-- ) {
|
||||
let hostname = hostnames[i];
|
||||
let entry = cache.get(hostname);
|
||||
if ( entry.lastAccessTime > obsolete ) { break; }
|
||||
// console.debug('pruneSelectorCacheAsync: flushing "%s"', hostname);
|
||||
entry.dispose();
|
||||
cache.delete(hostname);
|
||||
}
|
||||
if ( cache.size > this.selectorCacheCountMin ) {
|
||||
this.triggerSelectorCachePruner();
|
||||
}
|
||||
FilterContainer.prototype.disableSurveyor = function(details) {
|
||||
const hostname = details.hostname;
|
||||
if ( typeof hostname !== 'string' || hostname === '' ) { return; }
|
||||
const cacheEntry = this.selectorCache.get(hostname);
|
||||
if ( cacheEntry === undefined ) { return; }
|
||||
cacheEntry.disableSurveyor = true;
|
||||
};
|
||||
|
||||
/******************************************************************************/
|
||||
|
|
@ -850,43 +729,19 @@ FilterContainer.prototype.cssRuleFromProcedural = function(json) {
|
|||
/******************************************************************************/
|
||||
|
||||
FilterContainer.prototype.retrieveGenericSelectors = function(request) {
|
||||
if ( this.acceptedCount === 0 ) { return; }
|
||||
if ( !request.ids && !request.classes ) { return; }
|
||||
if ( this.lowlyGeneric.size === 0 ) { return; }
|
||||
if ( Array.isArray(request.hashes) === false ) { return; }
|
||||
if ( request.hashes.length === 0 ) { return; }
|
||||
|
||||
const { safeOnly = false } = request;
|
||||
//console.time('cosmeticFilteringEngine.retrieveGenericSelectors');
|
||||
|
||||
const simpleSelectors = this.$simpleSet;
|
||||
const complexSelectors = this.$complexSet;
|
||||
|
||||
const cacheEntry = this.selectorCache.get(request.hostname);
|
||||
const previousHits = cacheEntry && cacheEntry.cosmetic || this.$dummySet;
|
||||
|
||||
for ( const type in this.lowlyGeneric ) {
|
||||
const entry = this.lowlyGeneric[type];
|
||||
const selectors = request[entry.canonical];
|
||||
if ( Array.isArray(selectors) === false ) { continue; }
|
||||
for ( const identifier of selectors ) {
|
||||
if ( entry.simple.has(identifier) === false ) { continue; }
|
||||
const bucket = entry.complex.get(identifier);
|
||||
if ( typeof bucket === 'string' ) {
|
||||
if ( previousHits.has(bucket) ) { continue; }
|
||||
complexSelectors.add(bucket);
|
||||
continue;
|
||||
}
|
||||
const simpleSelector = entry.prefix + identifier;
|
||||
if ( Array.isArray(bucket) ) {
|
||||
for ( const complexSelector of bucket ) {
|
||||
if ( previousHits.has(complexSelector) ) { continue; }
|
||||
if ( safeOnly && complexSelector === simpleSelector ) { continue; }
|
||||
complexSelectors.add(complexSelector);
|
||||
}
|
||||
continue;
|
||||
}
|
||||
if ( previousHits.has(simpleSelector) ) { continue; }
|
||||
if ( safeOnly ) { continue; }
|
||||
simpleSelectors.add(simpleSelector);
|
||||
const selectorsSet = new Set();
|
||||
const hashes = [];
|
||||
for ( const hash of request.hashes ) {
|
||||
const bucket = this.lowlyGeneric.get(hash);
|
||||
if ( bucket === undefined ) { continue; }
|
||||
for ( const selector of bucket.split(',\n') ) {
|
||||
selectorsSet.add(selector);
|
||||
}
|
||||
hashes.push(hash);
|
||||
}
|
||||
|
||||
// Apply exceptions: it is the responsibility of the caller to provide
|
||||
|
|
@ -894,48 +749,29 @@ FilterContainer.prototype.retrieveGenericSelectors = function(request) {
|
|||
const excepted = [];
|
||||
if ( Array.isArray(request.exceptions) ) {
|
||||
for ( const exception of request.exceptions ) {
|
||||
if (
|
||||
simpleSelectors.delete(exception) ||
|
||||
complexSelectors.delete(exception)
|
||||
) {
|
||||
if ( selectorsSet.delete(exception) ) {
|
||||
excepted.push(exception);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (
|
||||
simpleSelectors.size === 0 &&
|
||||
complexSelectors.size === 0 &&
|
||||
excepted.length === 0
|
||||
) {
|
||||
return;
|
||||
}
|
||||
if ( selectorsSet.size === 0 && excepted.length === 0 ) { return; }
|
||||
|
||||
const out = { injectedCSS: '', excepted, };
|
||||
|
||||
const injected = [];
|
||||
if ( simpleSelectors.size !== 0 ) {
|
||||
injected.push(...simpleSelectors);
|
||||
simpleSelectors.clear();
|
||||
}
|
||||
if ( complexSelectors.size !== 0 ) {
|
||||
injected.push(...complexSelectors);
|
||||
complexSelectors.clear();
|
||||
}
|
||||
|
||||
// Cache and inject looked-up low generic cosmetic filters.
|
||||
if ( injected.length === 0 ) { return out; }
|
||||
const selectors = Array.from(selectorsSet);
|
||||
|
||||
if ( typeof request.hostname === 'string' && request.hostname !== '' ) {
|
||||
this.addToSelectorCache({
|
||||
cost: request.surveyCost || 0,
|
||||
hostname: request.hostname,
|
||||
selectors: injected,
|
||||
selectors,
|
||||
hashes,
|
||||
type: 'cosmetic',
|
||||
});
|
||||
}
|
||||
|
||||
out.injectedCSS = `${injected.join(',\n')}\n{display:none!important;}`;
|
||||
if ( selectors.length === 0 ) { return out; }
|
||||
|
||||
out.injectedCSS = `${selectors.join(',\n')}\n{display:none!important;}`;
|
||||
vAPI.tabs.insertCSS(request.tabId, {
|
||||
code: out.injectedCSS,
|
||||
frameId: request.frameId,
|
||||
|
|
@ -943,8 +779,6 @@ FilterContainer.prototype.retrieveGenericSelectors = function(request) {
|
|||
runAt: 'document_start',
|
||||
});
|
||||
|
||||
//console.timeEnd('cosmeticFilteringEngine.retrieveGenericSelectors');
|
||||
|
||||
return out;
|
||||
};
|
||||
|
||||
|
|
@ -972,7 +806,7 @@ FilterContainer.prototype.retrieveSpecificSelectors = function(
|
|||
exceptedFilters: [],
|
||||
proceduralFilters: [],
|
||||
convertedProceduralFilters: [],
|
||||
noDOMSurveying: this.needDOMSurveyor === false,
|
||||
disableSurveyor: this.lowlyGeneric.size === 0,
|
||||
};
|
||||
const injectedCSS = [];
|
||||
|
||||
|
|
@ -987,10 +821,9 @@ FilterContainer.prototype.retrieveSpecificSelectors = function(
|
|||
|
||||
// Cached cosmetic filters: these are always declarative.
|
||||
if ( cacheEntry !== undefined ) {
|
||||
cacheEntry.retrieve('cosmetic', specificSet);
|
||||
if ( out.noDOMSurveying === false ) {
|
||||
out.noDOMSurveying = cacheEntry.cosmeticSurveyingMissCount >
|
||||
cosmeticSurveyingMissCountMax;
|
||||
cacheEntry.retrieveCosmetic(specificSet, out.genericCosmeticHashes = []);
|
||||
if ( cacheEntry.disableSurveyor ) {
|
||||
out.disableSurveyor = true;
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -1123,8 +956,7 @@ FilterContainer.prototype.retrieveSpecificSelectors = function(
|
|||
// CSS selectors for collapsible blocked elements
|
||||
if ( cacheEntry ) {
|
||||
const networkFilters = [];
|
||||
cacheEntry.retrieve('net', networkFilters);
|
||||
if ( networkFilters.length !== 0 ) {
|
||||
if ( cacheEntry.retrieveNet(networkFilters) ) {
|
||||
details.code = `${networkFilters.join('\n')}\n{display:none!important;}`;
|
||||
if ( request.tabId !== undefined ) {
|
||||
vAPI.tabs.insertCSS(request.tabId, details);
|
||||
|
|
@ -1144,31 +976,16 @@ FilterContainer.prototype.getFilterCount = function() {
|
|||
/******************************************************************************/
|
||||
|
||||
FilterContainer.prototype.dump = function() {
|
||||
let genericCount = 0;
|
||||
for ( const i of [ 'simple', 'complex' ] ) {
|
||||
for ( const j of [ 'id', 'cl' ] ) {
|
||||
genericCount += this.lowlyGeneric[j][i].size;
|
||||
}
|
||||
const generics = [];
|
||||
for ( const selectors of this.lowlyGeneric.values() ) {
|
||||
generics.push(...selectors.split(',\n'));
|
||||
}
|
||||
return [
|
||||
'Cosmetic Filtering Engine internals:',
|
||||
`specific: ${this.specificFilters.size}`,
|
||||
`generic: ${genericCount}`,
|
||||
`+ lowly.id: ${this.lowlyGeneric.id.simple.size + this.lowlyGeneric.id.complex.size}`,
|
||||
` + simple: ${this.lowlyGeneric.id.simple.size}`,
|
||||
...Array.from(this.lowlyGeneric.id.simple).map(a => ` ###${a}`),
|
||||
` + complex: ${this.lowlyGeneric.id.complex.size}`,
|
||||
...Array.from(this.lowlyGeneric.id.complex.values()).map(a => ` ##${a}`),
|
||||
`+ lowly.class: ${this.lowlyGeneric.cl.simple.size + this.lowlyGeneric.cl.complex.size}`,
|
||||
` + simple: ${this.lowlyGeneric.cl.simple.size}`,
|
||||
...Array.from(this.lowlyGeneric.cl.simple).map(a => ` ##.${a}`),
|
||||
` + complex: ${this.lowlyGeneric.cl.complex.size}`,
|
||||
...Array.from(this.lowlyGeneric.cl.complex.values()).map(a => ` ##${a}`),
|
||||
`+ highly: ${this.highlyGeneric.simple.dict.size + this.highlyGeneric.complex.dict.size}`,
|
||||
` + highly.simple: ${this.highlyGeneric.simple.dict.size}`,
|
||||
...Array.from(this.highlyGeneric.simple.dict).map(a => ` ##${a}`),
|
||||
` + highly.complex: ${this.highlyGeneric.complex.dict.size}`,
|
||||
...Array.from(this.highlyGeneric.complex.dict).map(a => ` ##${a}`),
|
||||
`generic: ${generics.length}`,
|
||||
`+ selectors: ${this.lowlyGeneric.size}`,
|
||||
...generics.map(a => ` ${a}`),
|
||||
].join('\n');
|
||||
};
|
||||
|
||||
|
|
|
|||
|
|
@ -823,6 +823,10 @@ const onMessage = function(request, sender, callback) {
|
|||
cosmeticFilteringEngine.addToSelectorCache(request);
|
||||
break;
|
||||
|
||||
case 'disableGenericCosmeticFilteringSurveyor':
|
||||
cosmeticFilteringEngine.disableSurveyor(request);
|
||||
break;
|
||||
|
||||
case 'getCollapsibleBlockedRequests':
|
||||
response = {
|
||||
id: request.id,
|
||||
|
|
|
|||
Loading…
Reference in New Issue