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synced 2024-09-03 09:39:38 +02:00
fix #2132 + various minor code review
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@ -1338,9 +1338,9 @@ FilterContainer.prototype.createUserScriptRule = function(hash, hostname, select
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// https://github.com/gorhill/uBlock/issues/1954
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// 01234567890123456789
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// script:inject(token)
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// ^ ^
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// 14 -1
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// script:inject(token[, arg[, ...]])
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// ^ ^
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// 14 -1
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FilterContainer.prototype.retrieveUserScripts = function(domain, hostname) {
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if ( this.userScriptCount === 0 ) { return; }
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@ -1377,7 +1377,7 @@ FilterContainer.prototype.retrieveUserScripts = function(domain, hostname) {
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}
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var i = selectors.length;
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while ( i-- ) {
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this._lookupUserScript(scripts, selectors[i].slice(14, -1), reng, out);
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this._lookupUserScript(scripts, selectors[i].slice(14, -1).trim(), reng, out);
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}
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if ( out.length === 0 ) {
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@ -1404,13 +1404,32 @@ FilterContainer.prototype.retrieveUserScripts = function(domain, hostname) {
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return out.join('\n');
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};
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FilterContainer.prototype._lookupUserScript = function(dict, token, reng, out) {
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if ( dict.has(token) ) { return; }
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var content = reng.resourceContentFromName(token, 'application/javascript');
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if ( content ) {
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dict.set(token, out.length);
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out.push(content);
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/******************************************************************************/
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FilterContainer.prototype._lookupUserScript = function(dict, raw, reng, out) {
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if ( dict.has(raw) ) { return; }
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var token, args,
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pos = raw.indexOf(',');
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if ( pos === -1 ) {
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token = raw;
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} else {
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token = raw.slice(0, pos).trim();
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args = raw.slice(pos + 1).trim();
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}
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var content = reng.resourceContentFromName(token, 'application/javascript');
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if ( !content ) { return; }
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if ( args ) {
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var i = 1;
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while ( args !== '' ) {
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pos = args.indexOf(',');
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if ( pos === -1 ) { pos = args.length; }
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content = content.replace('{{' + i + '}}', args.slice(0, pos).trim());
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args = args.slice(pos + 1).trim();
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i++;
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}
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}
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dict.set(raw, out.length);
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out.push(content);
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};
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/******************************************************************************/
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@ -481,22 +481,21 @@ var filterRequests = function(pageStore, details) {
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//console.debug('messaging.js/contentscript-end.js: processing %d requests', requests.length);
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var hostnameFromURI = µb.URI.hostnameFromURI;
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var redirectEngine = µb.redirectEngine;
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var punycodeURL = vAPI.punycodeURL;
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var hostnameFromURI = µb.URI.hostnameFromURI,
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redirectEngine = µb.redirectEngine,
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punycodeURL = vAPI.punycodeURL;
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// Create evaluation context
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var context = pageStore.createContextFromFrameHostname(details.pageHostname);
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var request, r;
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var i = requests.length;
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var context = pageStore.createContextFromFrameHostname(details.pageHostname),
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request, r,
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i = requests.length;
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while ( i-- ) {
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request = requests[i];
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context.requestURL = punycodeURL(request.url);
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context.requestHostname = hostnameFromURI(context.requestURL);
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context.requestType = tagNameToRequestTypeMap[request.tag];
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r = pageStore.filterRequest(context);
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if ( typeof r !== 'string' || r.charAt(1) !== 'b' ) {
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if ( typeof r !== 'string' || r.charCodeAt(1) !== 98 /* 'b' */ ) {
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continue;
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}
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// Redirected? (We do not hide redirected resources.)
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@ -499,22 +499,14 @@ PageStore.prototype.toggleNetFilteringSwitch = function(url, scope, state) {
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/******************************************************************************/
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PageStore.prototype.logLargeMedia = (function() {
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var injectScript = function() {
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this.largeMediaTimer = null;
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µb.scriptlets.injectDeep(
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this.tabId,
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'load-large-media-interactive'
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);
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µb.contextMenu.update(this.tabId);
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};
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return function() {
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this.largeMediaCount += 1;
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if ( this.largeMediaTimer === null ) {
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this.largeMediaTimer = vAPI.setTimeout(injectScript.bind(this), 500);
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}
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};
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})();
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PageStore.prototype.injectLargeMediaElementScriptlet = function() {
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this.largeMediaTimer = null;
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µb.scriptlets.injectDeep(
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this.tabId,
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'load-large-media-interactive'
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);
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µb.contextMenu.update(this.tabId);
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};
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PageStore.prototype.temporarilyAllowLargeMediaElements = function() {
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this.largeMediaCount = 0;
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@ -617,7 +609,7 @@ PageStore.prototype.filterRequest = function(context) {
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// We want to short-term cache filtering results of collapsible types,
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// because they are likely to be reused, from network request handler and
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// from content script handler.
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if ( 'image sub_frame object'.indexOf(requestType) === -1 ) {
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if ( 'image media object sub_frame'.indexOf(requestType) === -1 ) {
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return this.filterRequestNoCache(context);
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}
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@ -628,17 +620,12 @@ PageStore.prototype.filterRequest = function(context) {
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var entry = this.netFilteringCache.lookup(context);
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if ( entry !== undefined ) {
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//console.debug('cache HIT: PageStore.filterRequest("%s")', context.requestURL);
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return entry.result;
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}
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var result = '';
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// Dynamic URL filtering.
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if ( result === '' ) {
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µb.sessionURLFiltering.evaluateZ(context.rootHostname, context.requestURL, requestType);
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result = µb.sessionURLFiltering.toFilterString();
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}
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µb.sessionURLFiltering.evaluateZ(context.rootHostname, context.requestURL, requestType);
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var result = µb.sessionURLFiltering.toFilterString();
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// Dynamic hostname/type filtering.
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if ( result === '' && µb.userSettings.advancedUserEnabled ) {
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@ -648,14 +635,13 @@ PageStore.prototype.filterRequest = function(context) {
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}
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}
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// Static filtering has lowest precedence.
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if ( result === '' || result.charAt(1) === 'n' ) {
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// Static filtering: lowest filtering precedence.
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if ( result === '' || result.charCodeAt(1) === 110 /* 'n' */ ) {
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if ( µb.staticNetFilteringEngine.matchString(context) !== undefined ) {
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result = µb.staticNetFilteringEngine.toResultString(µb.logger.isEnabled());
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}
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}
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//console.debug('cache MISS: PageStore.filterRequest("%s")', context.requestURL);
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this.netFilteringCache.add(context, result);
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return result;
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@ -663,6 +649,32 @@ PageStore.prototype.filterRequest = function(context) {
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/******************************************************************************/
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// The caller is responsible to check whether filtering is enabled or not.
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PageStore.prototype.filterLargeMediaElement = function(size) {
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if ( Date.now() < this.allowLargeMediaElementsUntil ) {
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return;
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}
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if ( µb.hnSwitches.evaluateZ('no-large-media', this.tabHostname) !== true ) {
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return;
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}
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if ( (size >>> 10) < µb.userSettings.largeMediaSize ) {
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return;
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}
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this.largeMediaCount += 1;
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if ( this.largeMediaTimer === null ) {
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this.largeMediaTimer = vAPI.setTimeout(
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this.injectLargeMediaElementScriptlet.bind(this),
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500
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);
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}
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return µb.hnSwitches.toResultString();
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};
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/******************************************************************************/
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PageStore.prototype.filterRequestNoCache = function(context) {
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if ( this.getNetFilteringSwitch() === false ) {
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return '';
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@ -697,7 +709,7 @@ PageStore.prototype.filterRequestNoCache = function(context) {
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}
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// Static filtering has lowest precedence.
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if ( result === '' || result.charAt(1) === 'n' ) {
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if ( result === '' || result.charCodeAt(1) === 110 /* 'n' */ ) {
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if ( µb.staticNetFilteringEngine.matchString(context) !== undefined ) {
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result = µb.staticNetFilteringEngine.toResultString(µb.logger.isEnabled());
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}
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@ -521,40 +521,29 @@ var processCSP = function(details, pageStore, context) {
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/******************************************************************************/
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// https://github.com/gorhill/uBlock/issues/1163
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// "Block elements by size"
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// "Block elements by size"
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var foilLargeMediaElement = function(details) {
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var µb = µBlock;
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var tabId = details.tabId;
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var pageStore = µb.pageStoreFromTabId(tabId);
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if ( pageStore === null ) {
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return;
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}
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if ( pageStore.getNetFilteringSwitch() !== true ) {
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return;
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}
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if ( Date.now() < pageStore.allowLargeMediaElementsUntil ) {
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return;
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}
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if ( µb.hnSwitches.evaluateZ('no-large-media', pageStore.tabHostname) !== true ) {
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return;
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}
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var i = headerIndexFromName('content-length', details.responseHeaders);
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if ( i === -1 ) {
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return;
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}
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var contentLength = parseInt(details.responseHeaders[i].value, 10) || 0;
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if ( (contentLength >>> 10) < µb.userSettings.largeMediaSize ) {
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if ( i === -1 ) { return; }
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var tabId = details.tabId,
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pageStore = µb.pageStoreFromTabId(tabId);
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if ( pageStore === null || pageStore.getNetFilteringSwitch() === false ) {
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return;
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}
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pageStore.logLargeMedia();
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var size = parseInt(details.responseHeaders[i].value, 10) || 0,
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result = pageStore.filterLargeMediaElement(size);
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if ( result === undefined ) { return; }
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if ( µb.logger.isEnabled() ) {
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µb.logger.writeOne(
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tabId,
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'net',
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µb.hnSwitches.toResultString(),
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result,
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details.type,
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details.url,
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pageStore.tabHostname,
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@ -455,13 +455,13 @@ var matchBucket = function(url, hostname, bucket, start) {
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/******************************************************************************/
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µBlock.isBlockResult = function(result) {
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return typeof result === 'string' && result.charAt(1) === 'b';
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return typeof result === 'string' && result.charCodeAt(1) === 98 /* 'b' */;
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};
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/******************************************************************************/
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µBlock.isAllowResult = function(result) {
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return typeof result !== 'string' || result.charAt(1) !== 'b';
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return typeof result !== 'string' || result.charCodeAt(1) !== 98 /* 'b' */;
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};
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/******************************************************************************/
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