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/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
/* vim: set ts=2 et sw=2 tw=80 filetype=javascript: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
"use strict";
this.EXPORTED_SYMBOLS = [
"DownloadImport",
];
// Globals
const Cc = Components.classes;
const Ci = Components.interfaces;
const Cu = Components.utils;
const Cr = Components.results;
Cu.import("resource://gre/modules/XPCOMUtils.jsm");
XPCOMUtils.defineLazyModuleGetter(this, "Downloads",
"resource://gre/modules/Downloads.jsm");
XPCOMUtils.defineLazyModuleGetter(this, "OS",
"resource://gre/modules/osfile.jsm")
XPCOMUtils.defineLazyModuleGetter(this, "Task",
"resource://gre/modules/Task.jsm");
XPCOMUtils.defineLazyModuleGetter(this, "Sqlite",
"resource://gre/modules/Sqlite.jsm");
XPCOMUtils.defineLazyModuleGetter(this, "NetUtil",
"resource://gre/modules/NetUtil.jsm");
/**
* These values come from the previous interface
* nsIDownloadManager, which has now been deprecated.
* These are the only types of download states that
* we will import.
*/
const DOWNLOAD_NOTSTARTED = -1;
const DOWNLOAD_DOWNLOADING = 0;
const DOWNLOAD_PAUSED = 4;
const DOWNLOAD_QUEUED = 5;
// DownloadImport
/**
* Provides an object that has a method to import downloads
* from the previous SQLite storage format.
*
* @param aList A DownloadList where each successfully
* imported download will be added.
* @param aPath The path to the database file.
*/
this.DownloadImport = function (aList, aPath)
{
this.list = aList;
this.path = aPath;
}
this.DownloadImport.prototype = {
/**
* Imports unfinished downloads from the previous SQLite storage
* format (supporting schemas 7 and up), to the new Download object
* format. Each imported download will be added to the DownloadList
*
* @return {Promise}
* @resolves When the operation has completed (i.e., every download
* from the previous database has been read and added to
* the DownloadList)
*/
import: function () {
return Task.spawn(function* task_DI_import() {
let connection = yield Sqlite.openConnection({ path: this.path });
try {
let schemaVersion = yield connection.getSchemaVersion();
// We don't support schemas older than version 7 (from 2007)
// - Version 7 added the columns mimeType, preferredApplication
// and preferredAction in 2007
// - Version 8 added the column autoResume in 2007
// (if we encounter version 7 we will treat autoResume = false)
// - Version 9 is the last known version, which added a unique
// GUID text column that is not used here
if (schemaVersion < 7) {
throw new Error("Unable to import in-progress downloads because "
+ "the existing profile is too old.");
}
let rows = yield connection.execute("SELECT * FROM moz_downloads");
for (let row of rows) {
try {
// Get the DB row data
let source = row.getResultByName("source");
let target = row.getResultByName("target");
let tempPath = row.getResultByName("tempPath");
let startTime = row.getResultByName("startTime");
let state = row.getResultByName("state");
let referrer = row.getResultByName("referrer");
let maxBytes = row.getResultByName("maxBytes");
let mimeType = row.getResultByName("mimeType");
let preferredApplication = row.getResultByName("preferredApplication");
let preferredAction = row.getResultByName("preferredAction");
let entityID = row.getResultByName("entityID");
let autoResume = false;
try {
autoResume = (row.getResultByName("autoResume") == 1);
} catch (ex) {
// autoResume wasn't present in schema version 7
}
if (!source) {
throw new Error("Attempted to import a row with an empty " +
"source column.");
}
let resumeDownload = false;
switch (state) {
case DOWNLOAD_NOTSTARTED:
case DOWNLOAD_QUEUED:
case DOWNLOAD_DOWNLOADING:
resumeDownload = true;
break;
case DOWNLOAD_PAUSED:
resumeDownload = autoResume;
break;
default:
// We won't import downloads in other states
continue;
}
// Transform the data
let targetPath = NetUtil.newURI(target)
.QueryInterface(Ci.nsIFileURL).file.path;
let launchWhenSucceeded = (preferredAction != Ci.nsIMIMEInfo.saveToDisk);
let downloadOptions = {
source: {
url: source,
referrer: referrer
},
target: {
path: targetPath,
partFilePath: tempPath,
},
saver: {
type: "copy",
entityID: entityID
},
startTime: new Date(startTime / 1000),
totalBytes: maxBytes,
hasPartialData: !!tempPath,
tryToKeepPartialData: true,
launchWhenSucceeded: launchWhenSucceeded,
contentType: mimeType,
launcherPath: preferredApplication
};
// Paused downloads that should not be auto-resumed are considered
// in a "canceled" state.
if (!resumeDownload) {
downloadOptions.canceled = true;
}
let download = yield Downloads.createDownload(downloadOptions);
yield this.list.add(download);
if (resumeDownload) {
download.start().catch(() => {});
} else {
yield download.refresh();
}
} catch (ex) {
Cu.reportError("Error importing download: " + ex);
}
}
} catch (ex) {
Cu.reportError(ex);
} finally {
yield connection.close();
}
}.bind(this));
}
}
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