/// <summary>
/// Initiates an syncronous check for updates
/// </summary>
/// <param name="force">A value indicating if the duration and user-enabled check should be bypassed</param>
public void CheckForUpdates(bool force)
{
try
{
if (m_config == null)
{
System.Xml.Serialization.XmlSerializer src = new System.Xml.Serialization.XmlSerializer(typeof(Config));
using (System.IO.FileStream fs = new System.IO.FileStream(m_configFile, System.IO.FileMode.Open, System.IO.FileAccess.Read, System.IO.FileShare.Read))
m_config = (Config)src.Deserialize(fs);
}
//This throws an exception if somethings broken
m_config.CheckValid();
if (!m_config.Enabled && !force)
return;
if (m_lastCheck == null)
{
string file = m_config.ApplicationName + ".xml";
foreach (char c in System.IO.Path.GetInvalidFileNameChars())
file = file.Replace(c, '-');
file = System.IO.Path.Combine(System.IO.Path.Combine(System.Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), "FreshKeeper"), file);
if (!System.IO.Directory.Exists(System.IO.Path.GetDirectoryName(file)))
System.IO.Directory.CreateDirectory(System.IO.Path.GetDirectoryName(file));
if (System.IO.File.Exists(file))
{
System.Xml.Serialization.XmlSerializer srl = new System.Xml.Serialization.XmlSerializer(typeof(LastCheck));
using (System.IO.FileStream fs = new System.IO.FileStream(m_configFile, System.IO.FileMode.Open, System.IO.FileAccess.Read, System.IO.FileShare.Read))
m_lastCheck = (LastCheck)srl.Deserialize(fs);
}
else
m_lastCheck = new LastCheck();
}
if (Duplicati.Library.Core.Timeparser.ParseTimeInterval(m_config.CheckInterval, m_lastCheck.Time) > DateTime.Now)
return;
Random r = new Random();
string url = m_config.Urls[r.Next(0, m_config.Urls.Length)];
System.Net.WebClient wc = new System.Net.WebClient();
System.Xml.XmlDocument doc = new System.Xml.XmlDocument();
doc.PreserveWhitespace = true; //Make sure we don't alter the document
using (System.IO.MemoryStream ms = new System.IO.MemoryStream(wc.DownloadData(url)))
doc.Load(ms);
string hash = doc["UpdateList"].Attributes["SignedHash"].Value;
doc["UpdateList"].Attributes["SignedHash"].Value = "";
System.Security.Cryptography.RSACryptoServiceProvider rsa = new System.Security.Cryptography.RSACryptoServiceProvider();
rsa.FromXmlString(m_config.PublicKey);
UpdateList lst = null;
using(System.IO.MemoryStream ms = new System.IO.MemoryStream())
{
doc.Save(ms);
if (!rsa.VerifyData(ms.ToArray(), System.Security.Cryptography.CryptoConfig.MapNameToOID("SHA1"), Convert.FromBase64String(hash)))
throw new Exception("Failed to verify signature");
ms.Position = 0;
System.Xml.Serialization.XmlSerializer sr = new System.Xml.Serialization.XmlSerializer(typeof(UpdateList));
lst = (UpdateList)sr.Deserialize(ms);
lst.SignedHash = hash;
}
if (lst == null || lst.Updates == null || lst.Updates.Length == 0)
return;
Update newest = lst.Updates[0];
foreach(Update u in lst.Updates)
if (u.Version > newest.Version && (!u.BugfixUpdate || (u.BugfixUpdate && m_config.NotifyOnRevisionChange)))
newest = u;
if (newest.Version > m_config.LocalVersion)
if (Updateavailable != null)
Updateavailable(this, newest);
}
catch (Exception ex)
{
RaiseErrorEvent(ex);
return;
}
}
/// <summary>
/// Initiates an syncronous check for updates
/// </summary>
/// <param name="force">A value indicating if the duration and user-enabled check should be bypassed</param>
public void CheckForUpdates(bool force)
{
try
{
if (m_config == null)
{
System.Xml.Serialization.XmlSerializer src = new System.Xml.Serialization.XmlSerializer(typeof(Config));
using (System.IO.FileStream fs = new System.IO.FileStream(m_configFile, System.IO.FileMode.Open, System.IO.FileAccess.Read, System.IO.FileShare.Read))
m_config = (Config)src.Deserialize(fs);
}
//This throws an exception if somethings broken
m_config.CheckValid();
if (!m_config.Enabled && !force)
{
return;
}
if (m_lastCheck == null)
{
string file = m_config.ApplicationName + ".xml";
foreach (char c in System.IO.Path.GetInvalidFileNameChars())
{
file = file.Replace(c, '-');
}
file = System.IO.Path.Combine(System.IO.Path.Combine(System.Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), "FreshKeeper"), file);
if (!System.IO.Directory.Exists(System.IO.Path.GetDirectoryName(file)))
{
System.IO.Directory.CreateDirectory(System.IO.Path.GetDirectoryName(file));
}
if (System.IO.File.Exists(file))
{
System.Xml.Serialization.XmlSerializer srl = new System.Xml.Serialization.XmlSerializer(typeof(LastCheck));
using (System.IO.FileStream fs = new System.IO.FileStream(m_configFile, System.IO.FileMode.Open, System.IO.FileAccess.Read, System.IO.FileShare.Read))
m_lastCheck = (LastCheck)srl.Deserialize(fs);
}
else
{
m_lastCheck = new LastCheck();
}
}
if (Duplicati.Library.Core.Timeparser.ParseTimeInterval(m_config.CheckInterval, m_lastCheck.Time) > DateTime.Now)
{
return;
}
Random r = new Random();
string url = m_config.Urls[r.Next(0, m_config.Urls.Length)];
System.Net.WebClient wc = new System.Net.WebClient();
System.Xml.XmlDocument doc = new System.Xml.XmlDocument();
doc.PreserveWhitespace = true; //Make sure we don't alter the document
using (System.IO.MemoryStream ms = new System.IO.MemoryStream(wc.DownloadData(url)))
doc.Load(ms);
string hash = doc["UpdateList"].Attributes["SignedHash"].Value;
doc["UpdateList"].Attributes["SignedHash"].Value = "";
System.Security.Cryptography.RSACryptoServiceProvider rsa = new System.Security.Cryptography.RSACryptoServiceProvider();
rsa.FromXmlString(m_config.PublicKey);
UpdateList lst = null;
using (System.IO.MemoryStream ms = new System.IO.MemoryStream())
{
doc.Save(ms);
if (!rsa.VerifyData(ms.ToArray(), System.Security.Cryptography.CryptoConfig.MapNameToOID("SHA1"), Convert.FromBase64String(hash)))
{
throw new Exception("Failed to verify signature");
}
ms.Position = 0;
System.Xml.Serialization.XmlSerializer sr = new System.Xml.Serialization.XmlSerializer(typeof(UpdateList));
lst = (UpdateList)sr.Deserialize(ms);
lst.SignedHash = hash;
}
if (lst == null || lst.Updates == null || lst.Updates.Length == 0)
{
return;
}
Update newest = lst.Updates[0];
foreach (Update u in lst.Updates)
{
if (u.Version > newest.Version && (!u.BugfixUpdate || (u.BugfixUpdate && m_config.NotifyOnRevisionChange)))
{
newest = u;
}
}
if (newest.Version > m_config.LocalVersion)
{
if (Updateavailable != null)
{
Updateavailable(this, newest);
}
}
}
catch (Exception ex)
{
RaiseErrorEvent(ex);
return;
}
}
