Elbert Alias
9 years ago
parent
b0bc61bca7
commit
2bcb73b4ba
@ -0,0 +1,584 @@
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'use strict';
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(function() {
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var secBefore = 2000;
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var secAfter = 5000;
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var secBetweenDupAssets = 10e3;
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var minVidSize = 500e3;
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var maxVidSize = 25e6;
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var maxContentRange = 25e6;
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var videoExtensions = [
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'af', '3gp', 'asf', 'avchd', 'avi', 'cam', 'dsh', 'flv', 'm1v', 'm2v',
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'fla', 'flr', 'sol', 'm4v', 'mkv', 'wrap', 'mng', 'mov', 'mpeg', 'mpg',
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'mpe', 'mp4', 'mxf', 'nsv', 'ogg', 'rm', 'svi', 'smi', 'wmv', 'webm'
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];
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var extensionsReg = new RegExp('\\.' + videoExtensions.join('$|\\.') + '$');
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var videoContentTypesPrefixes = ['binary/octet-stream', 'video/', 'flv-application/', 'media'];
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var bannedContentTypes = ['video/mp2t','video/f4m','video/f4f'];
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var bannedFiletypes = ['ts'];
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var bannedFiletypesReg = new RegExp('\\.' + bannedFiletypes.join('$|\\.') + '$');
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var whitelistReqTypes = ['object', 'xmlhttprequest', 'other'];
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var topVideoAssetDomains = [
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'2mdn.net',
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'innovid.com',
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'serving-sys.com',
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'btrll.com',
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'teads.tv',
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'tubemogul.com'
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];
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if ( !String.prototype.endsWith ) {
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String.prototype.endsWith = function(searchString, position) {
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var subjectString = this.toString();
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if ( typeof position !== 'number' || !isFinite(position) ||
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Math.floor(position) !== position || position > subjectString.length) {
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position = subjectString.length;
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}
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position -= searchString.length;
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var lastIndex = subjectString.indexOf(searchString, position);
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return lastIndex !== -1 && lastIndex === position;
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};
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}
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function isPixelRequest(request) {
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return (request.type === 'image' || request.responseStatus === 204) &&
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request.size <= 1000;
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}
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function isVpaidOrVastRequest(request) {
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var lowerCaseUrl = request.url.toLowerCase();
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return lowerCaseUrl.indexOf('vpaid') !== -1 || lowerCaseUrl.indexOf('vast') !== -1;
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}
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function hasValidRequestType(request) {
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return whitelistReqTypes.indexOf(request.type) >= 0;
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}
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function stripQueryParams(url) {
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return url.split('?',1)[0];
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}
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function parseHostnameFromUrl(url) {
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var parser = document.createElement('a');
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parser.href = url;
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return parser.hostname;
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}
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function hasDomain(url, domain) {
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return parseHostnameFromUrl(url).endsWith(domain);
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}
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function findHeader(headers, key) {
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var header;
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for ( var i = 0; i < headers.length; i += 1 ) {
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header = headers[i];
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if ( header.name.toLowerCase() === key ) {
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return header;
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}
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}
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return null;
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}
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function validVideoType(vtype) {
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var goodType = videoContentTypesPrefixes.some(function(prefix) {
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return vtype.indexOf(prefix) === 0;
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});
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return goodType;
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}
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function assetMsgKey(assetReq) {
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var url = stripQueryParams(assetReq.url);
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var key = assetReq.frameId + '-' + url;
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return key;
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}
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var PageNetworkTrafficCollector = function(tabId) {
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this.tabId = tabId;
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this.displayAdFound = false;
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this.requests = {};
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this.msgsBeingSent = {};
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this.assetsSeen = {};
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this.allRedirects = {};
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};
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var globalPageContainer = {
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collectors: {},
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dyingCollectors: {},
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cleanupCollector: function(tabId) {
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if ( tabId in this.collectors ) {
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delete globalPageContainer.collectors[tabId];
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}
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},
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onNewNavigation: function(details) {
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var tabId = details.tabId;
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this.cleanupCollector(tabId);
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this.collectors[tabId] = new PageNetworkTrafficCollector(tabId);
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},
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onNavigationCommitted: function(details) {
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},
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onNavigationCompleted: function(details) {
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},
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onTabClose: function(tabId, closeInfo) {
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this.cleanupCollector(tabId);
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delete this.collectors[tabId];
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},
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onDisplayAdFound: function(tabId) {
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this.collectors[tabId].displayAdFound = true;
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},
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getRandId: function() {
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return String(Math.floor(Math.random() * 1e9));
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},
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getCollector: function(tabId) {
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if ( this.collectors.hasOwnProperty(tabId) ) {
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return this.collectors[tabId];
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}
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return null;
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},
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forwardCall: function(details, collectorMemberFunction) {
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var collector = this.getCollector(details.tabId);
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if ( collector !== null ) {
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collectorMemberFunction.apply(collector, [details]);
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}
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}
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};
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PageNetworkTrafficCollector.prototype.sendLogMessageToTabConsole = function() {
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var logMessage = Array.from(arguments).join(' ');
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var message = {message: logMessage, event: 'console-log-message'};
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chrome.tabs.sendMessage(this.tabId, message);
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};
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PageNetworkTrafficCollector.prototype.sendToTab = function(assetReq, reqs, curPageUrl, isValidAd) {
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var msg = {};
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msg.assets = [];
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msg.event_data = {};
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if ( isValidAd ) {
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msg.event = 'new-video-ad';
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msg.requests = reqs;
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msg.requests.sort(function(reqA, reqB) {return reqA.requestTimestamp - reqB.requestTimestamp;});
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if ( assetReq ) {
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msg.assets = [assetReq];
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}
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} else {
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msg.requests = reqs.map(function(request) {
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return parseHostnameFromUrl(request.url);
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});
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msg.assets = [{
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url: parseHostnameFromUrl(assetReq.url),
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contentType: assetReq.contentType,
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size: assetReq.size
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}];
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msg.event = 'new-invalid-video-ad';
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}
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msg.origUrl = curPageUrl;
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msg.displayAdFound = this.displayAdFound;
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chrome.tabs.sendMessage(this.tabId, msg);
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};
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PageNetworkTrafficCollector.prototype.getRedirKey = function(url, frameId) {
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return url + ':' + frameId;
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};
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PageNetworkTrafficCollector.prototype.seenBefore = function(request) {
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var oldTime = this.assetsSeen[assetMsgKey(request)];
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if ( oldTime && (request.requestTimestamp-oldTime < secBetweenDupAssets)){
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return true;
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}
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return false;
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};
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PageNetworkTrafficCollector.prototype.recordSeenAsset = function(request) {
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this.assetsSeen[assetMsgKey(request)] = request.requestTimestamp;
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};
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PageNetworkTrafficCollector.prototype.onBeforeRequest = function(details) {
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var req = {
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url: details.url,
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type: details.type,
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httpMethod: details.method,
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frameId: details.frameId,
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parentFrameId: details.parentFrameId,
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requestTimestamp: details.timeStamp,
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};
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this.requests[details.requestId] = req;
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};
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PageNetworkTrafficCollector.prototype.onSendHeaders = function(details) {
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var request, header;
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request = this.requests[details.requestId];
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header = request && findHeader(details.requestHeaders, 'x-requested-with');
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if ( header && header.value.toLowerCase().indexOf('flash') > -1 ) {
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request.from_flash = true;
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}
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};
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PageNetworkTrafficCollector.prototype.onHeadersReceived = function(details) {
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var getFrameDetails = {
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tabId: details.tabId,
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processId: null,
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frameId: details.frameId
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};
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var pageNetworkTrafficController = this;
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chrome.webNavigation.getFrame(getFrameDetails, function(frameDetails) {
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if ( frameDetails && frameDetails.url ) {
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pageNetworkTrafficController._onHeadersReceived(details, frameDetails);
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}
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});
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};
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PageNetworkTrafficCollector.prototype._onHeadersReceived = function(details, frameDetails) {
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var contentSize, contentRange;
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var request = this.requests[details.requestId];
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if ( request ) {
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var redirParent = this.allRedirects[this.getRedirKey(details.url, details.frameId)];
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var header = request && findHeader(details.responseHeaders, 'content-type');
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var contentType = header && header.value.toLowerCase();
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if ( contentType){
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request.contentType = contentType;
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}
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header = request && findHeader(details.responseHeaders, 'content-length');
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contentSize = header && header.value;
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if ( contentSize ) {
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request.size = request.size || 0;
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request.size += parseInt(contentSize);
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}
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header = request && findHeader(details.responseHeaders, 'content-range');
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contentRange = header && header.value;
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if ( contentRange ) {
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request.contentRange = parseInt(contentRange.split('/')[1]);
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}
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var frameUrl = null;
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if ( frameDetails && frameDetails.url ) {
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frameUrl = frameDetails.url;
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}
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if ( !this.bannedRequest(request) &&
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(this.isVideoReq(frameUrl, request) || (redirParent && redirParent.isVideo))) {
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request.isVideo = true;
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}
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}
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};
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PageNetworkTrafficCollector.prototype.onBeforeRedirect = function(details) {
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var request = this.requests[details.requestId];
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if ( request ) {
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if ( request.redirects ) {
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request.redirects.push(details.redirectUrl);
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} else {
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request.redirects = [details.redirectUrl];
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}
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this.allRedirects[this.getRedirKey(details.redirectUrl, details.frameId)] = request;
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}
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};
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PageNetworkTrafficCollector.prototype.isYoutubeMastheadRequest = function(url) {
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var re = /video_masthead/;
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return this.hasYoutubeDomain(url) && re.test(url);
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};
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PageNetworkTrafficCollector.prototype.isYoutubeVideoRequest = function(srcUrl, destUrl) {
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if ( !this.hasYoutubeDomain(srcUrl) ) {
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return false;
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}
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var re = /https?:\/\/r.*?\.googlevideo\.com\/videoplayback\?/;
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return re.test(destUrl);
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};
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PageNetworkTrafficCollector.prototype.processResponse = function(requestDetails, frameDetails) {
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var request;
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if ( requestDetails ) {
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request = this.requests[requestDetails.requestId];
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if ( request ) {
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request.responseStatus = requestDetails.statusCode;
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request.responseTimestamp = requestDetails.timeStamp;
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var frameUrl = null;
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if ( frameDetails && frameDetails.url ) {
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frameUrl = frameDetails.url;
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}
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var requestUrl = null;
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if ( request.url ) {
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requestUrl = request.url;
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}
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if ( this.isYoutubeAdReq(frameUrl, requestUrl) ) {
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var videoId = this.parseYoutubeVideoIdFromUrl(requestUrl);
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if ( videoId ) {
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request.isYoutubeAd = true;
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request.isVideo = true;
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request.url = 'https://www.youtube.com/watch?v=' + this.parseYoutubeVideoIdFromUrl(requestUrl);
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}
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} else if ( !this.bannedRequest(request) &&
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(this.isVideo || this.isVideoReq(frameUrl, request))) {
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request.isVideo = true;
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}
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if ( request.isVideo ) {
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var msgKey = assetMsgKey(request);
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this.msgsBeingSent[msgKey] = request;
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if ( !this.seenBefore(request) ) {
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this.sendMsgWhenQuiet(msgKey);
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}
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this.recordSeenAsset(request);
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}
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}
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}
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};
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PageNetworkTrafficCollector.prototype.onResponseStarted = function(responseDetails) {
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if ( responseDetails.frameId < 0 ) {
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responseDetails.frameId = 99999;
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}
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var getFrameDetails = {
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tabId: responseDetails.tabId,
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processId: null,
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frameId: responseDetails.frameId
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};
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var pageNetworkTrafficController = this;
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chrome.webNavigation.getFrame(getFrameDetails, function(frameDetails) {
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if ( frameDetails && frameDetails.url ) {
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pageNetworkTrafficController.processResponse(responseDetails, frameDetails);
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}
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});
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};
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PageNetworkTrafficCollector.prototype.hasBannedFiletype = function(request) {
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var url = stripQueryParams(request.url);
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if ( bannedFiletypesReg.exec(url) ) {
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return true;
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} else {
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return false;
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}
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};
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PageNetworkTrafficCollector.prototype.checkContentHeaders = function(request) {
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if ( request.contentType && validVideoType(request.contentType) ) {
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return true;
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}
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return false;
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};
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PageNetworkTrafficCollector.prototype.checkUrlExtension = function(request) {
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var url = stripQueryParams(request.url);
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if ( extensionsReg.exec(url) ) {
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return true;
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} else {
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return false;
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}
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};
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PageNetworkTrafficCollector.prototype.isVideoReq = function(srcUrl, request) {
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if ( this.isYoutubeVideoRequest(srcUrl, request.url) ) {
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return false;
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}
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return this.checkUrlExtension(request) || this.checkContentHeaders(request);
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};
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PageNetworkTrafficCollector.prototype.hasYoutubeDomain = function(url) {
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var hostname = parseHostnameFromUrl(url) ;
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if ( hostname === 'www.youtube.com' ) {
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return true;
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}
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return false;
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};
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PageNetworkTrafficCollector.prototype.parseYoutubeVideoIdFromUrl = function(url) {
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var re = /^https?:\/\/www\.youtube\.com\/get_video_info.*(?:\?|&)video_id=(.*?)(?:$|&)/;
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var match = re.exec(url);
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if ( match && match.length > 1 ) {
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return match[1];
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}
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re = /^https?:\/\/www\.youtube\.com\/embed\/(.*?)(?:$|\?)/;
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match = re.exec(url);
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if ( match && match.length > 1 ) {
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return match[1];
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}
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re = /^https?:\/\/www\.youtube\.com\/watch\?v=(.*$)/;
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match = re.exec(url);
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if ( match && match.length > 1 ) {
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return match[1];
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}
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return null;
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};
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PageNetworkTrafficCollector.prototype.isYoutubeGetVideoInfoReq = function(url) {
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var re = /^https?:\/\/www\.youtube\.com\/get_video_info\?/;
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return re.test(url);
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};
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PageNetworkTrafficCollector.prototype.isYoutubeAdReq = function(srcUrl, destUrl) {
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if ( !this.hasYoutubeDomain(srcUrl) ||
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!this.isYoutubeGetVideoInfoReq(destUrl)) {
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return false;
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}
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if ( this.parseYoutubeVideoIdFromUrl(srcUrl) ===
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this.parseYoutubeVideoIdFromUrl(destUrl) &&
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!this.isYoutubeMastheadRequest(destUrl)) {
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return false;
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}
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return true;
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};
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PageNetworkTrafficCollector.prototype.bannedRequest = function(request) {
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return this.bannedVideoType(request) || this.hasBannedFiletype(request) || this.bannedVideoSize(request);
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};
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PageNetworkTrafficCollector.prototype.bannedVideoType = function(request) {
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var badType = false;
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if ( request.contentType ) {
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badType = bannedContentTypes.some(function(prefix) {
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return request.contentType.indexOf(prefix) >= 0;
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});
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}
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return badType;
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};
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PageNetworkTrafficCollector.prototype.bannedVideoSize = function(request) {
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if ( request.size !== null ) {
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if ( request.size < minVidSize || request.size > maxVidSize || request.contentRange > maxContentRange ) {
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return true;
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}
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}
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return false;
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};
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PageNetworkTrafficCollector.prototype.grabTagReqs = function(tabRequests, assetRequest) {
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var minTimestamp, maxTimestamp;
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minTimestamp = assetRequest.requestTimestamp - secBefore;
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maxTimestamp = assetRequest.requestTimestamp + secAfter;
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var filteredRequests = tabRequests.filter(function(request) {
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return (request.requestTimestamp > minTimestamp &&
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request.requestTimestamp < maxTimestamp &&
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request.frameId === assetRequest.frameId &&
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request.url !== assetRequest.url &&
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(hasValidRequestType(request) ||
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isPixelRequest(request)));
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});
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return filteredRequests;
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};
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PageNetworkTrafficCollector.prototype.isValidVideoAd = function(assetRequest, tagRequests) {
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var hasVpaidOrVastRequest = tagRequests.some(function(tagRequest) {
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return isVpaidOrVastRequest(tagRequest);
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});
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if ( hasVpaidOrVastRequest ) {
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return true;
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}
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var hasTopVideoAssetDomain = topVideoAssetDomains.some(function(assetDomain) {
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||||
return hasDomain(assetRequest.url, assetDomain);
|
||||
});
|
||||
|
||||
return hasTopVideoAssetDomain;
|
||||
};
|
||||
|
||||
PageNetworkTrafficCollector.prototype.sendMsgWhenQuiet = function(msgKey) {
|
||||
var _this = this,
|
||||
origPageUrl, msgAssetReq;
|
||||
msgAssetReq = this.msgsBeingSent[msgKey];
|
||||
chrome.tabs.get(this.tabId, function(tab) {origPageUrl = tab.url;});
|
||||
|
||||
setTimeout(function() {
|
||||
var rawRequests = [];
|
||||
if ( globalPageContainer.collectors[_this.tabId] === _this ) {
|
||||
for ( var reqId in _this.requests ) {
|
||||
rawRequests.push(_this.requests[reqId]);
|
||||
}
|
||||
var tagReqs = _this.grabTagReqs(rawRequests, msgAssetReq);
|
||||
|
||||
if ( _this.isValidVideoAd(msgAssetReq, tagReqs) ) {
|
||||
_this.sendToTab(msgAssetReq, tagReqs, origPageUrl, true);
|
||||
} else {
|
||||
|
||||
_this.sendToTab(msgAssetReq, tagReqs, origPageUrl, false);
|
||||
}
|
||||
|
||||
} else {
|
||||
|
||||
}
|
||||
delete _this.msgsBeingSent[msgKey];
|
||||
}, secAfter+secBefore);
|
||||
};
|
||||
|
||||
PageNetworkTrafficCollector.prototype.existingMessage = function(candidateRequest) {
|
||||
var frameMsg = this.msgsBeingSent[candidateRequest.frameId];
|
||||
if ( frameMsg ) {
|
||||
return frameMsg;
|
||||
} else {
|
||||
return null;
|
||||
}
|
||||
};
|
||||
|
||||
chrome.webRequest.onBeforeRequest.addListener(function(details) {
|
||||
globalPageContainer.forwardCall(details, PageNetworkTrafficCollector.prototype.onBeforeRequest);
|
||||
}, {urls: ['http://*/*', 'https://*/*']}, []);
|
||||
|
||||
chrome.webRequest.onSendHeaders.addListener(function(details) {
|
||||
globalPageContainer.forwardCall(details, PageNetworkTrafficCollector.prototype.onSendHeaders);
|
||||
}, {urls: ['http://*/*', 'https://*/*']}, ['requestHeaders']);
|
||||
|
||||
chrome.webRequest.onHeadersReceived.addListener(function(details) {
|
||||
globalPageContainer.forwardCall(details, PageNetworkTrafficCollector.prototype.onHeadersReceived);
|
||||
}, {urls: ['http://*/*', 'https://*/*']}, ['responseHeaders']);
|
||||
|
||||
chrome.webRequest.onBeforeRedirect.addListener(function(details) {
|
||||
globalPageContainer.forwardCall(details, PageNetworkTrafficCollector.prototype.onBeforeRedirect);
|
||||
}, {urls: ['http://*/*', 'https://*/*']}, []);
|
||||
|
||||
chrome.webRequest.onResponseStarted.addListener(function(details) {
|
||||
globalPageContainer.forwardCall(details, PageNetworkTrafficCollector.prototype.onResponseStarted);
|
||||
}, {urls: ['http://*/*', 'https://*/*']}, ['responseHeaders']);
|
||||
|
||||
chrome.webNavigation.onBeforeNavigate.addListener(function(details) {
|
||||
if ( details.frameId === 0 ) {
|
||||
globalPageContainer.onNewNavigation(details);
|
||||
}
|
||||
}, {});
|
||||
|
||||
chrome.webNavigation.onCommitted.addListener(function(details) {
|
||||
if ( details.frameId === 0 ) {
|
||||
globalPageContainer.onNavigationCommitted(details);
|
||||
}
|
||||
});
|
||||
|
||||
chrome.webNavigation.onCompleted.addListener(function(details) {
|
||||
if ( details.frameId === 0 ) {
|
||||
globalPageContainer.onNavigationCompleted(details);
|
||||
}
|
||||
});
|
||||
|
||||
chrome.tabs.onRemoved.addListener(function(tabId, closeInfo) {
|
||||
globalPageContainer.onTabClose(tabId, closeInfo);
|
||||
});
|
||||
|
||||
chrome.runtime.onMessage.addListener(function(message, sender, sendResponse) {
|
||||
if ( message.event === 'new-ad' && message.data.event === 'ad' ) {
|
||||
var tabId = sender.tab.id;
|
||||
if ( tabId ) {
|
||||
globalPageContainer.onDisplayAdFound(tabId);
|
||||
}
|
||||
}
|
||||
});
|
||||
})();
|
||||
Reference in new issue