84 líneas
2.8 KiB
JavaScript
84 líneas
2.8 KiB
JavaScript
"use strict";
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let EXPORTED_SYMBOLS = ["DB"];
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var Cc = Components.classes, Ci = Components.interfaces, Cu = Components.utils;
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Cu.import("resource://gre/modules/Services.jsm");
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Cu.import("resource://gre/modules/NetUtil.jsm");
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Cu.import("resource://gre/modules/FileUtils.jsm");
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function copyDataURLToFile(document, url, file, callback) {
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NetUtil.asyncFetch(url, function(istream) {
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let ostream = Cc["@mozilla.org/network/file-output-stream;1"].
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createInstance(Ci.nsIFileOutputStream);
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ostream.init(file, -1, -1, Ci.nsIFileOutputStream.DEFER_OPEN);
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NetUtil.asyncCopy(istream, ostream, function(result) {
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callback && callback(file, result, document);
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});
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});
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}
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function showMessage(document, msg, style) {
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let div = document.createElement("div");
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div.className = style;
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div.appendChild(document.createTextNode(msg));
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let page = document.getElementById("page");
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page.appendChild(div);
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}
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let DB = {
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db: null,
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openDB: function(dbname, document) {
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let dir = Services.dirsvc.get("ProfD", Ci.nsIFile); dir.append("ca-archive");
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try {
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let storageService = Cc["@mozilla.org/storage/service;1"].getService(Ci.mozIStorageService);
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let dbFile = dir.clone(); dbFile.append(dbname);
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if (dbFile.exists() && dbFile.fileSize > 0) {
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this.db = storageService.openDatabase(dbFile);
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} else {
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if (!dir.exists()) {
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showMessage(document, "Performing initial database provisioning ...", "db-warning ok");
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throw "Init";
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} else {
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throw "CA Archive database has jast been updated, not ready or corrupted!";
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}
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}
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return true;
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} catch (e) {
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if (e != "Init") {
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Cu.reportError(e);
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showMessage(document, e, "db-warning");
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showMessage(document, "Trying to (re)provision database, please wait ...", "db-warning");
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}
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let tmpFile = FileUtils.getFile("TmpD", ["ca-archive.tmp"]);
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tmpFile.createUnique(Ci.nsIFile.NORMAL_FILE_TYPE, FileUtils.PERMS_FILE);
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let src = Services.io.newURI("chrome://ca-archive/content/db/" + dbname, null, null);
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copyDataURLToFile(document, src, tmpFile, function(file, result, document) {
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try {
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if (result == 0 && file.exists()) {
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if (dir.exists()) {
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dir.remove(true);
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}
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dir.create(Ci.nsIFile.DIRECTORY_TYPE, FileUtils.PERMS_DIRECTORY);
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tmpFile.moveTo(dir, dbname);
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showMessage(document, "Database has been processed successfully!", "db-warning ok");
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showMessage(document, "Please reload the page.", "db-warning ok");
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} else {
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throw "CA Archive database Fatal Error!";
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}
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} catch (e) {
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Cu.reportError(e);
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showMessage(document, e, "db-warning bad");
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showMessage(document, "Try to reinstall CA Archive.", "db-warning bad");
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}
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});
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return false;
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}
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},
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closeDB: function() {
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this.db.close();
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}
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}; |