|
- using Shadowsocks.Model;
- using System;
- using System.Collections;
- using System.Collections.Generic;
- using System.Net;
- using System.Reflection;
- using System.Text;
- using System.Text.RegularExpressions;
- using SimpleJson;
-
- namespace Shadowsocks.Controller
- {
- public class UpdateChecker
- {
- private const string UpdateURL = "https://api.github.com/repos/shadowsocks/shadowsocks-csharp/releases";
-
- public string LatestVersionNumber;
- public string LatestVersionURL;
- public event EventHandler NewVersionFound;
-
- public const string Version = "2.5.2";
-
- public void CheckUpdate(Configuration config)
- {
- // TODO test failures
- WebClient http = new WebClient();
- http.Headers.Add("User-Agent", "Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/35.0.3319.102 Safari/537.36");
- http.Proxy = new WebProxy(IPAddress.Loopback.ToString(), config.localPort);
- http.DownloadStringCompleted += http_DownloadStringCompleted;
- http.DownloadStringAsync(new Uri(UpdateURL));
- }
-
- public static int CompareVersion(string l, string r)
- {
- var ls = l.Split('.');
- var rs = r.Split('.');
- for (int i = 0; i < Math.Max(ls.Length, rs.Length); i++)
- {
- int lp = (i < ls.Length) ? int.Parse(ls[i]) : 0;
- int rp = (i < rs.Length) ? int.Parse(rs[i]) : 0;
- if (lp != rp)
- {
- return lp - rp;
- }
- }
- return 0;
- }
-
- public class VersionComparer : IComparer<string>
- {
- // Calls CaseInsensitiveComparer.Compare with the parameters reversed.
- public int Compare(string x, string y)
- {
- return CompareVersion(ParseVersionFromURL(x), ParseVersionFromURL(y));
- }
-
- }
-
- private static string ParseVersionFromURL(string url)
- {
- Match match = Regex.Match(url, @".*Shadowsocks-win.*?-([\d\.]+)\.\w+", RegexOptions.IgnoreCase);
- if (match.Success)
- {
- if (match.Groups.Count == 2)
- {
- return match.Groups[1].Value;
- }
- }
- return null;
- }
-
- private void SortVersions(List<string> versions)
- {
- versions.Sort(new VersionComparer());
- }
-
- private bool IsNewVersion(string url)
- {
- if (url.IndexOf("prerelease") >= 0)
- {
- return false;
- }
- string version = ParseVersionFromURL(url);
- if (version == null)
- {
- return false;
- }
- string currentVersion = Version;
-
- return CompareVersion(version, currentVersion) > 0;
- }
-
- private void http_DownloadStringCompleted(object sender, DownloadStringCompletedEventArgs e)
- {
- try
- {
- string response = e.Result;
-
- JsonArray result = (JsonArray)SimpleJson.SimpleJson.DeserializeObject(e.Result);
-
- List<string> versions = new List<string>();
- foreach (JsonObject release in result)
- {
- if ((bool)release["prerelease"])
- {
- continue;
- }
- foreach (JsonObject asset in (JsonArray)release["assets"])
- {
- string url = (string)asset["browser_download_url"];
- if (IsNewVersion(url))
- {
- versions.Add(url);
- }
- }
- }
-
- if (versions.Count == 0)
- {
- return;
- }
- // sort versions
- SortVersions(versions);
- LatestVersionURL = versions[versions.Count - 1];
- LatestVersionNumber = ParseVersionFromURL(LatestVersionURL);
- if (NewVersionFound != null)
- {
- NewVersionFound(this, new EventArgs());
- }
- }
- catch (Exception ex)
- {
- Logging.Debug(ex.ToString());
- return;
- }
- }
- }
- }
|