Exemplo n.º 1
0
        /// <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;
            }
        }
Exemplo n.º 2
0
        /// <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;
            }
        }