public void Load()
{
if (File.Exists(_settingsFile))
{
lock (this.SettingsLock)
{
XmlReaderSettings readerSettings = new XmlReaderSettings();
readerSettings.CheckCharacters = true;
readerSettings.CloseInput = true;
readerSettings.ConformanceLevel = ConformanceLevel.Document;
readerSettings.IgnoreComments = true;
readerSettings.IgnoreWhitespace = true;
using (XmlReader reader = XmlReader.Create(_settingsFile, readerSettings))
{
while (reader.Read())
{
if (reader.IsStartElement())
{
switch (reader.Name)
{
case ElementXml:
case ElementSettings:
// do nothing
break;
case ElementIsLoggingEnabled:
try
{
this.IsLoggingEnabled = Convert.ToBoolean(reader.ReadString(), CultureInfo.InvariantCulture);
}
catch
{
this.IsLoggingEnabled = false;
}
break;
case ElementRegistrationEmail:
try
{
this.RegistrationEmail = CatfoodCrypto.DecryptString(reader.ReadString(), _appName);
}
catch
{
this.RegistrationEmail = null;
}
break;
case ElementRegistrationKey:
try
{
this.RegistrationKey = Convert.ToInt32(reader.ReadString(), CultureInfo.InvariantCulture);
}
catch
{
this.RegistrationKey = 0;
}
break;
case ElementUseProxyServer:
try
{
this.UseProxyServer = Convert.ToBoolean(reader.ReadString(), CultureInfo.InvariantCulture);
}
catch
{
this.UseProxyServer = false;
}
break;
case ElementUseProxyServerCredentials:
try
{
this.UseProxyServerCredentials = Convert.ToBoolean(reader.ReadString(), CultureInfo.InvariantCulture);
}
catch
{
this.UseProxyServerCredentials = false;
}
break;
case ElementProxyAddress:
try
{
this.ProxyAddress = reader.ReadString();
}
catch
{
this.ProxyAddress = null;
}
break;
case ElementProxyDomain:
try
{
this.ProxyDomain = CatfoodCrypto.DecryptString(reader.ReadString(), _appName);
}
catch
{
this.ProxyDomain = null;
}
break;
case ElementProxyPass:
try
{
this.ProxyPass = CatfoodCrypto.DecryptString(reader.ReadString(), _appName);
}
catch
{
this.ProxyPass = null;
}
break;
case ElementProxyPort:
try
{
this.ProxyPort = Convert.ToInt32(reader.ReadString(), CultureInfo.InvariantCulture);
}
catch
{
this.ProxyPort = 8080;
}
break;
case ElementProxyUser:
try
{
this.ProxyUser = CatfoodCrypto.DecryptString(reader.ReadString(), _appName);
}
catch
{
this.ProxyUser = null;
}
break;
case ElementInstanceId:
try
{
this.InstanceId = new Guid(reader.ReadString());
}
catch
{
this.InstanceId = Guid.Empty;
}
break;
case ElementInstallDate:
try
{
this.InstallDate = new DateTime(Convert.ToInt64(reader.ReadString(), CultureInfo.InvariantCulture));
}
catch
{
this.InstallDate = DateTime.Now;
}
break;
case ElementNextUpdateCheck:
try
{
this.NextUpdateCheck = new DateTime(Convert.ToInt64(reader.ReadString(), CultureInfo.InvariantCulture));
}
catch
{
this.NextUpdateCheck = DateTime.Now;
}
break;
default:
// give derrived class a chance to handle elements not related to us
try
{
LoadFromXmlElement(reader.Name, reader.ReadString());
LoadFromXmlReader(reader.Name, reader);
}
catch { }
break;
}
}
}
}
}
UpdateProxyServer();
}
// generate an instance Id if needed
if (this.InstanceId == Guid.Empty)
{
this.InstanceId = Guid.NewGuid();
}
}
public void Save()
{
Exception lastException = null;
int retryAttempt = 0;
int sleepFor = SaveRetryWaitMS;
while (retryAttempt <= SaveRetryLimit)
{
lastException = null;
try
{
lock (this.SettingsLock)
{
// create the settings folder if necessary
if (!Directory.Exists(_settingsFolder))
{
Directory.CreateDirectory(_settingsFolder);
}
XmlWriterSettings writerSettings = new XmlWriterSettings();
writerSettings.CheckCharacters = true;
writerSettings.CloseOutput = true;
writerSettings.ConformanceLevel = ConformanceLevel.Document;
writerSettings.Indent = true;
using (XmlWriter writer = XmlWriter.Create(_settingsFile, writerSettings))
{
writer.WriteStartDocument();
writer.WriteStartElement(ElementSettings);
// save base settings
writer.WriteStartElement(ElementIsLoggingEnabled);
writer.WriteValue(_isLoggingEnabled);
writer.WriteEndElement();
if (!string.IsNullOrEmpty(_registrationEmail))
{
writer.WriteStartElement(ElementRegistrationEmail);
writer.WriteString(CatfoodCrypto.EncryptString(_registrationEmail, _appName));
writer.WriteEndElement();
writer.WriteStartElement(ElementRegistrationKey);
writer.WriteValue(_registrationKey);
writer.WriteEndElement();
}
writer.WriteStartElement(ElementUseProxyServer);
writer.WriteValue(_useProxyServer);
writer.WriteEndElement();
writer.WriteStartElement(ElementUseProxyServerCredentials);
writer.WriteValue(_useProxyServerCredentials);
writer.WriteEndElement();
if (!string.IsNullOrEmpty(_proxyAddress))
{
writer.WriteStartElement(ElementProxyAddress);
writer.WriteString(_proxyAddress);
writer.WriteEndElement();
}
if (!string.IsNullOrEmpty(_proxyDomain))
{
writer.WriteStartElement(ElementProxyDomain);
writer.WriteString(CatfoodCrypto.EncryptString(_proxyDomain, _appName));
writer.WriteEndElement();
}
if (!string.IsNullOrEmpty(_proxyPass))
{
writer.WriteStartElement(ElementProxyPass);
writer.WriteString(CatfoodCrypto.EncryptString(_proxyPass, _appName));
writer.WriteEndElement();
}
writer.WriteStartElement(ElementProxyPort);
writer.WriteValue(_proxyPort);
writer.WriteEndElement();
if (!string.IsNullOrEmpty(_proxyUser))
{
writer.WriteStartElement(ElementProxyUser);
writer.WriteString(CatfoodCrypto.EncryptString(_proxyUser, _appName));
writer.WriteEndElement();
}
writer.WriteStartElement(ElementInstanceId);
writer.WriteString(_instanceId.ToString());
writer.WriteEndElement();
writer.WriteStartElement(ElementInstallDate);
writer.WriteValue(_installDate.Ticks);
writer.WriteEndElement();
writer.WriteStartElement(ElementNextUpdateCheck);
writer.WriteValue(_nextUpdateCheck.Ticks);
writer.WriteEndElement();
// save derived class settings
SaveToXmlWriter(writer);
writer.WriteEndElement();
writer.WriteEndDocument();
}
}
// if we get this far save succeeded
break;
}
catch (Exception ex)
{
lastException = ex;
}
retryAttempt++;
LogException(LogSeverity.Warning,
string.Format(CultureInfo.CurrentCulture,
"Failed to save settings, retrying (attempt {0} of {1})",
retryAttempt,
SaveRetryLimit),
lastException);
// sleep for a bit in case the settings file is locked, and
// bump up the sleep interval for the next save attempt
Thread.Sleep(sleepFor);
sleepFor += SaveRetryWaitMS;
}
// throw the last exception if we reached the retry limit and still didn't save
if ((retryAttempt == SaveRetryLimit) && (lastException != null))
{
LogMessage(LogSeverity.Error, "Failed to save settings");
throw lastException;
}
else
{
UpdateProxyServer();
// fire the settings saved event
if (SettingsSaved != null)
{
SettingsSaved(this, EventArgs.Empty);
}
}
}
