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// Copyright (C) 2015, The Duplicati Team
// http://www.duplicati.com, info@duplicati.com
//
// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation; either version 2.1 of the
// License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;
namespace Duplicati.Library.AutoUpdater
{
public static class AutoUpdateSettings
{
private static Dictionary<string, string> _cache = new Dictionary<string, string>();
private const string APP_NAME = "AutoUpdateAppName.txt";
private const string UPDATE_URL = "AutoUpdateURL.txt";
private const string UPDATE_KEY = "AutoUpdateSignKey.txt";
private const string UPDATE_CHANNEL = "AutoUpdateBuildChannel.txt";
private const string UPDATE_README = "AutoUpdateFolderReadme.txt";
private const string UPDATE_INSTALL_FILE = "AutoUpdateInstallIDTemplate.txt";
private const string OEM_APP_NAME = "oem-app-name.txt";
private const string OEM_UPDATE_URL = "oem-update-url.txt";
private const string OEM_UPDATE_KEY = "oem-update-key.txt";
private const string OEM_UPDATE_README = "oem-update-readme.txt";
private const string OEM_UPDATE_INSTALL_FILE = "oem-update-installid.txt";
internal const string UPDATEURL_ENVNAME_TEMPLATE = "AUTOUPDATER_{0}_URLS";
internal const string UPDATECHANNEL_ENVNAME_TEMPLATE = "AUTOUPDATER_{0}_CHANNEL";
internal const string MATCH_UPDATE_URL_PREFIX_GROUP = "prefix";
internal const string MATCH_UPDATE_URL_CHANNEL_GROUP = "channel";
internal const string MATCH_UPDATE_URL_FILENAME_GROUP = "filename";
internal static readonly Regex MATCH_AUTOUPDATE_URL =
new Regex(string.Format(
"(?<{0}>.+)(?<{1}>{3})(?<{2}>/([^/]+).manifest)",
MATCH_UPDATE_URL_PREFIX_GROUP,
MATCH_UPDATE_URL_CHANNEL_GROUP,
MATCH_UPDATE_URL_FILENAME_GROUP,
string.Join("|", Enum.GetNames(typeof(ReleaseType)).Union(new [] { "preview", "rene" }) )), RegexOptions.Compiled | RegexOptions.IgnoreCase);
static AutoUpdateSettings()
{
ReadResourceText(APP_NAME, OEM_APP_NAME);
ReadResourceText(UPDATE_URL, OEM_UPDATE_URL);
ReadResourceText(UPDATE_KEY, OEM_UPDATE_KEY);
ReadResourceText(UPDATE_README, OEM_UPDATE_README);
ReadResourceText(UPDATE_INSTALL_FILE, OEM_UPDATE_INSTALL_FILE);
ReadResourceText(UPDATE_CHANNEL, null);
}
private static string ReadResourceText(string name, string oemname)
{
string result;
if (_cache.TryGetValue(name, out result))
return result;
try
{
using (var rd = new System.IO.StreamReader(System.Reflection.Assembly.GetExecutingAssembly().GetManifestResourceStream(typeof(AutoUpdateSettings), name)))
result = rd.ReadToEnd();
}
catch
{
}
try
{
// Check for OEM override
if (!string.IsNullOrWhiteSpace(oemname) && System.IO.File.Exists(oemname))
result = System.IO.File.ReadAllText(oemname);
}
catch
{
}
if (string.IsNullOrWhiteSpace(result))
result = "";
else
result = result.Trim();
_cache[name] = result;
return result;
}
public static string[] URLs
{
get
{
if (UsesAlternateURLs)
return Environment.GetEnvironmentVariable(string.Format(UPDATEURL_ENVNAME_TEMPLATE, AppName)).Split(new char[] { ';' }, StringSplitOptions.RemoveEmptyEntries);
else
return ReadResourceText(UPDATE_URL, OEM_UPDATE_URL).Split(new char[] { ';' }, StringSplitOptions.RemoveEmptyEntries);;
}
}
public static bool UsesAlternateURLs
{
get
{
return !string.IsNullOrWhiteSpace(Environment.GetEnvironmentVariable(string.Format(UPDATEURL_ENVNAME_TEMPLATE, AppName)));
}
}
public static ReleaseType DefaultUpdateChannel
{
get
{
var channelstring = Environment.GetEnvironmentVariable(string.Format(UPDATECHANNEL_ENVNAME_TEMPLATE, AppName));
if (UsesAlternateURLs && string.IsNullOrWhiteSpace(channelstring))
{
foreach(var url in URLs)
{
var match = AutoUpdateSettings.MATCH_AUTOUPDATE_URL.Match(url);
if (match.Success)
{
channelstring = match.Groups[AutoUpdateSettings.MATCH_UPDATE_URL_CHANNEL_GROUP].Value;
break;
}
}
}
if (string.IsNullOrWhiteSpace(channelstring))
channelstring = BuildUpdateChannel;
if (string.IsNullOrWhiteSpace(channelstring))
channelstring = UpdaterManager.BaseVersion.ReleaseType;
// Update from older builds
if (string.Equals(channelstring, "preview", StringComparison.InvariantCultureIgnoreCase))
channelstring = ReleaseType.Experimental.ToString();
if (string.Equals(channelstring, "rene", StringComparison.InvariantCultureIgnoreCase))
channelstring = ReleaseType.Canary.ToString();
ReleaseType rt;
if (!Enum.TryParse<ReleaseType>(channelstring, true, out rt))
rt = ReleaseType.Stable;
return rt;
}
}
public static string AppName
{
get { return ReadResourceText(APP_NAME, OEM_APP_NAME); }
}
public static string BuildUpdateChannel
{
get { return ReadResourceText(UPDATE_CHANNEL, null); }
}
public static string UpdateFolderReadme
{
get { return ReadResourceText(UPDATE_README, OEM_UPDATE_README); }
}
public static string UpdateInstallFileText
{
get { return string.Format(ReadResourceText(UPDATE_INSTALL_FILE, OEM_UPDATE_INSTALL_FILE), Guid.NewGuid().ToString("N")); }
}
public static System.Security.Cryptography.RSACryptoServiceProvider SignKey
{
get
{
try
{
var key = System.Security.Cryptography.RSACryptoServiceProvider.Create();
key.FromXmlString(ReadResourceText(UPDATE_KEY, OEM_UPDATE_KEY));
return (System.Security.Cryptography.RSACryptoServiceProvider)key;
}
catch
{
}
return null;
}
}
}
}
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