35 lines
1.1 KiB
JavaScript
35 lines
1.1 KiB
JavaScript
const Cc = Components.classes,
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Ci = Components.interfaces;
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function ignoreCF(h) {
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return /(cloudflare((|support|warp)|\-(dns|free|ipfs|quic)))\.com$/.test(h) ? true : false;
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}
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let knownCF = [];
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let CFBlocking = {
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observe: function (subject, topic, data) {
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let httpChl = subject.QueryInterface(Ci.nsIHttpChannel),
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reqURL = subject.URI.spec;
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if (reqURL.indexOf('http') === 0 && reqURL.indexOf('.archive.org/') === -1) {
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let hostN = (new URL(reqURL)).hostname;
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if (topic == 'http-on-modify-request') {
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if (knownCF.includes(hostN)) {
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httpChl.cancel(Cr.NS_BINDING_ABORTED);
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}
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}
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if (topic == 'http-on-examine-response') {
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let rayid = '';
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try {
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rayid = httpChl.getResponseHeader('cf-ray');
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} catch (e) {}
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if (rayid.length > 4 && !ignoreCF(hostN)) {
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if (!knownCF.includes(hostN)) {
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knownCF.push(hostN);
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}
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httpChl.cancel(Cr.NS_BINDING_ABORTED);
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}
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}
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}
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}
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};
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let OBS = Cc['@mozilla.org/observer-service;1'].getService(Ci.nsIObserverService);
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OBS.addObserver(CFBlocking, 'http-on-modify-request', false);
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OBS.addObserver(CFBlocking, 'http-on-examine-response', false); |