public string UpdateManifest()
{
try
{
Engine.Instance.Log(Engine.LogType.Verbose, Messages.ManifestUpdate);
Dictionary <string, string> parameters = new Dictionary <string, string>();
parameters["act"] = "manifest";
XmlDocument xmlDoc = AirExchange.Fetch(Messages.ManifestUpdate, parameters);
lock (Manifest)
{
if (Manifest == null)
{
Manifest = (new XmlDocument()).DocumentElement;
}
Manifest = Manifest.OwnerDocument.ImportNode(xmlDoc.DocumentElement, true);
//Manifest = xmlDoc.DocumentElement;
// Update with the local time
Manifest.Attributes["time"].Value = Utils.UnixTimeStamp().ToString();
}
Engine.Instance.PostManifestUpdate();
Engine.Instance.Log(Engine.LogType.Verbose, Messages.ManifestDone);
return("");
}
catch (Exception e)
{
return(Messages.Format(Messages.ManifestFailed, e.Message));
}
}
public static XmlDocument Fetch(string title, Dictionary <string, string> parameters)
{
parameters["login"] = Engine.Instance.Storage.Get("login");
parameters["password"] = Engine.Instance.Storage.Get("password");
parameters["system"] = Platform.Instance.GetSystemCode();
parameters["version"] = Constants.VersionInt.ToString(CultureInfo.InvariantCulture);
List <string> hosts = new List <string>();
if (Engine.Instance.Storage.Manifest != null)
{
XmlNodeList nodesHosts = Engine.Instance.Storage.Manifest.SelectNodes("//hosts/host");
foreach (XmlNode nodeHost in nodesHosts)
{
hosts.Add(nodeHost.Attributes["address"].Value);
}
}
// Debugging
/*
* hosts.Clear();
* hosts.Add("invalidhostname.airvpn.org");
* hosts.Add("54.93.175.114");
*/
string firstError = "";
int hostN = 0;
foreach (string host in hosts)
{
hostN++;
if (Utils.IsIP(host) == false)
{
// If locked network are enabled, skip the hostname and try only by IP.
// To avoid DNS issue (generally, to avoid losing time).
if (Engine.Instance.NetworkLockManager.IsDnsResolutionAvailable(host) == false)
{
continue;
}
}
try
{
RouteScope routeScope = new RouteScope(host);
XmlDocument xmlDoc = AirExchange.FetchHost(host, parameters);
routeScope.End();
if (xmlDoc == null)
{
throw new Exception("No answer.");
}
if (xmlDoc.DocumentElement.Attributes["error"] != null)
{
throw new Exception(xmlDoc.DocumentElement.Attributes["error"].Value);
}
return(xmlDoc);
}
catch (Exception e)
{
string info = e.Message;
string proxyMode = Engine.Instance.Storage.Get("proxy.mode").ToLowerInvariant();
string proxyAuth = Engine.Instance.Storage.Get("proxy.auth").ToLowerInvariant();
if (proxyMode != "none")
{
info += ", with '" + proxyMode + "' proxy and '" + proxyAuth + "' auth";
}
Engine.Instance.Log(Engine.LogType.Verbose, Messages.Format(Messages.ExchangeTryFailed, title, hostN.ToString(), info));
if (firstError == "")
{
firstError = e.Message;
}
}
}
throw new Exception(firstError);
}
