зеркало из https://github.com/mozilla/gecko-dev.git
86 строки
3.1 KiB
JavaScript
86 строки
3.1 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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"use strict";
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const { RemoteSettings } = ChromeUtils.import(
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"resource://services-settings/remote-settings.js"
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);
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const { Services } = ChromeUtils.import("resource://gre/modules/Services.jsm");
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const FileUtils = ChromeUtils.import("resource://gre/modules/FileUtils.jsm")
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.FileUtils;
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const EXPORTED_SYMBOLS = ["PublicSuffixList"];
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const RECORD_ID = "tld-dafsa";
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const SIGNAL = "public-suffix-list-updated";
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const PublicSuffixList = {
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CLIENT: RemoteSettings("public-suffix-list"),
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init() {
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this.CLIENT.on("sync", this.onUpdate.bind(this));
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/* We have a single record for this collection. Let's see if we already have it locally.
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* Note that on startup, we don't need to synchronize immediately on new profiles.
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*/
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this.CLIENT.get({ syncIfEmpty: false, filters: { id: RECORD_ID } })
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.then(async records => {
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if (records.length == 1) {
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const fileURI = await this.CLIENT.attachments.download(records[0]);
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// Send a signal so that the C++ code loads the updated list on startup.
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this.notifyUpdate(fileURI);
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}
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})
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.catch(err => console.error(err));
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},
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/**
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* This method returns the path to the file based on the file uri received
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* Example:
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* On windows "file://C:/Users/AppData/main/public-suffix-list/dafsa.bin"
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* will be converted to "C:\\Users\\main\\public-suffix-list\\dafsa.bin
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*
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* On macOS/linux "file:///home/main/public-suffix-list/dafsa.bin"
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* will be converted to "/home/main/public-suffix-list/dafsa.bin"
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*/
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getFilePath(fileURI) {
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const uri = Services.io.newURI(fileURI);
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const file = uri.QueryInterface(Ci.nsIFileURL).file;
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return file.path;
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},
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notifyUpdate(fileURI) {
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const filePath = this.getFilePath(fileURI);
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const nsifile = new FileUtils.File(filePath);
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/* Send a signal to be read by the C++, the method
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* ::Observe(nsISupports* aSubject, const char* aTopic, const char16_t* aData)
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* at netwerk/dns/nsEffectiveTLDService.cpp
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*/
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Services.obs.notifyObservers(
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nsifile, // aSubject
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SIGNAL, // aTopic
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filePath // aData
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);
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},
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async onUpdate({ data: { created, updated, deleted } }) {
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// In theory, this will never happen, we will never delete the record.
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if (deleted.length == 1) {
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await this.CLIENT.attachments.delete(deleted[0]);
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}
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// Handle creation and update the same way
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const changed = created.concat(updated.map(u => u.new));
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/* In theory, we should never have more than one record. And if we receive
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* this event, it's because the single record was updated.
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*/
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if (changed.length != 1) {
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console.warn("Unsupported sync event for Public Suffix List");
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return;
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}
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// Download the updated file.
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const fileURI = await this.CLIENT.attachments.download(changed[0]);
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// Notify the C++ part to reload it from disk.
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this.notifyUpdate(fileURI);
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},
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};
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