/// <summary>
/// Initializes various settings based on configuration.
/// </summary>
private void Initialize()
{
if (RegistryHelper.Open(@"Exchange DkimSigner") != null)
{
DkimAlgorithmKind signingAlgorithm = DkimAlgorithmKind.RsaSha1;
DkimCanonicalizationKind headerCanonicalization = DkimCanonicalizationKind.Simple;
DkimCanonicalizationKind bodyCanonicalization = DkimCanonicalizationKind.Simple;
IEnumerable <string> headersToSign = null;
// Load the log level.
DkimSigningRoutingAgentFactory.logLevel = 0;
try
{
string temp = RegistryHelper.Read("LogLevel", @"Exchange DkimSigner");
if (temp != null)
{
DkimSigningRoutingAgentFactory.logLevel = Convert.ToInt32(temp);
}
}
catch (FormatException) { }
catch (OverflowException) { }
if (logLevel == 0)
{
throw new ConfigurationErrorsException(Resources.DkimSigningRoutingAgentFactory_BadLogLevel);
}
// Load the signing algorithm.
try
{
signingAlgorithm = (DkimAlgorithmKind)Enum.Parse(typeof(DkimAlgorithmKind), RegistryHelper.Read("Algorithm", @"Exchange DkimSigner\DKIM"), true);
}
catch (Exception ex)
{
throw new ConfigurationErrorsException(Resources.DkimSigningRoutingAgentFactory_BadDkimAlgorithmConfig, ex);
}
// Load the header canonicalization algorithm.
try
{
headerCanonicalization = (DkimCanonicalizationKind)Enum.Parse(typeof(DkimCanonicalizationKind), RegistryHelper.Read("HeaderCanonicalization", @"Exchange DkimSigner\DKIM"), true);
}
catch (Exception ex)
{
throw new ConfigurationErrorsException(Resources.DkimSigningRoutingAgentFactory_BadDkimCanonicalizationHeaderConfig, ex);
}
// Load the body canonicalization algorithm.
try
{
bodyCanonicalization = (DkimCanonicalizationKind)Enum.Parse(typeof(DkimCanonicalizationKind), RegistryHelper.Read("BodyCanonicalization", @"Exchange DkimSigner\DKIM"), true);
}
catch (Exception ex)
{
throw new ConfigurationErrorsException(Resources.DkimSigningRoutingAgentFactory_BadDkimCanonicalizationBodyConfig, ex);
}
// Load the list of headers to sign in each message.
string unparsedHeaders = RegistryHelper.Read("HeadersToSign", @"Exchange DkimSigner\DKIM");
if (unparsedHeaders != null)
{
headersToSign = unparsedHeaders.Split(new char[] { ';' }, StringSplitOptions.RemoveEmptyEntries);
}
// Load the list of domains
domainSettings = new List <DomainElement>();
string[] domainNames = RegistryHelper.GetSubKeyName(@"Exchange DkimSigner\Domain");
if (domainNames != null)
{
foreach (string domainName in domainNames)
{
string selector = RegistryHelper.Read("Selector", @"Exchange DkimSigner\Domain\" + domainName);
string privateKeyFile = RegistryHelper.Read("PrivateKeyFile", @"Exchange DkimSigner\Domain\" + domainName);
DomainElement domainElement = new DomainElement(domainName,
selector,
privateKeyFile);
if (domainElement.initElement(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location)))
{
domainSettings.Add(domainElement);
}
}
}
this.dkimSigner = new DkimSigner(signingAlgorithm,
headerCanonicalization,
bodyCanonicalization,
headersToSign);
Logger.LogInformation("Exchange DKIM started. Signing Algorithm: " + signingAlgorithm.ToString() + ", Canonicalization Header Algorithm: " + headerCanonicalization.ToString() + ", Canonicalization Header Algorithm: " + bodyCanonicalization.ToString() + ", Number of domains: " + domainSettings.Count);
}
else
{
throw new ConfigurationErrorsException(Resources.DkimSigningRoutingAgentFactory_BadDkimConfig);
}
}