private string decrypt(string value)
{
var request = new OnDecryptRequestArgs(value);
this.OnDecryptRequest?.Invoke(this, request);
return(request.DecryptedValue);
}
public void Create(Configuration configuration)
{
this.config = configuration;
this.client = CreateClient();
this.client.MqttMsgPublishReceived += Client_MqttMsgPublishReceived;
MqttClient CreateClient()
{
X509Certificate2 caCert = null;
X509Certificate2 clientCert = null;
MqttSslProtocols protocol = MqttSslProtocols.None;
bool secure = bool.TryParse(this.config[SecureParam], out secure) && secure;
if (secure)
{
//MQTT can be made secure by a certificate from a Certificate Authority alone, or a CA certificate and a client certificate
//The CA certificate should never need a password
caCert = LoadCertificate(File.Parse(this.config[CACertParam]), string.Empty);
//The Client certificate should always require a password
if (!string.IsNullOrWhiteSpace(this.config[ClientCertParam]))
{
OnDecryptRequestArgs certDecryptArgs = new OnDecryptRequestArgs(this.config[CertPasswordParam]);
OnDecryptRequest(this, certDecryptArgs);
string clientPassword = certDecryptArgs.DecryptedValue;
clientCert = LoadCertificate(File.Parse(this.config[ClientCertParam]), clientPassword);
}
if (Enum.TryParse(this.config[SecureProtocolParam], out MqttSslProtocols parsedProtocol))
{
protocol = parsedProtocol;
}
}
return(new MqttClient(
this.config[BrokerParam]
, Int32.TryParse(this.config[BrokerPortParam], out int port) && port > 0 ? port : 1883
, secure
, caCert
, clientCert
, protocol
, null));
}
}
public void Start()
{
if (this.client.IsConnected == false)
{
string clientId = string.IsNullOrWhiteSpace(this.config[ClientIdParam]) ? Guid.NewGuid().ToString() : this.config[ClientIdParam];
string authUsername = this.config[AuthUsernameParam];
string authPassword = null;
if (!string.IsNullOrWhiteSpace(this.config[AuthPasswordParam]))
{
OnDecryptRequestArgs authDecryptArgs = new OnDecryptRequestArgs(this.config[AuthPasswordParam]);
OnDecryptRequest(this, authDecryptArgs);
authPassword = authDecryptArgs.DecryptedValue;
}
this.client.Connect(
clientId
, string.IsNullOrWhiteSpace(authUsername) ? null : authUsername
, string.IsNullOrWhiteSpace(authUsername) ? null : authPassword);
this.client.Subscribe(new string[] { this.Topic }, new byte[] { (byte)Enum.Parse(typeof(QualityOfService), this.config[QOSParam]) });
}
}
public void Create(Configuration configuration)
{
this.config = configuration;
QualityOfService = (byte)Enum.Parse(typeof(QualityOfService), this.config[QOSParam]);
this.client = CreateClient();
if (UseNestedObject)
{
Grid coGrid = new Grid
{
Value = this.config[ObjectPropertiesParam]
};
//Store source/alias names for the complex object
ComplexObjectAliases = coGrid.Rows.Select(r =>
{
string source = (string)r[SourceNameColumn];
string alias = (string)r[OutputNameColumn];
alias = string.IsNullOrWhiteSpace(alias) ? source : alias;
return(new Tuple <string, string>(source, alias));
}).ToArray();
}
MqttClient CreateClient()
{
X509Certificate2 caCert = null;
X509Certificate2 clientCert = null;
MqttSslProtocols protocol = MqttSslProtocols.None;
bool secure = bool.TryParse(this.config[SecureParam], out secure) && secure;
if (secure)
{
//MQTT can be made secure by a certificate from a Certificate Authority alone, or a CA certificate and a client certificate
//The CA certificate should never need a password
caCert = ListenerAdvanced.LoadCertificate(File.Parse(this.config[CACertParam]), string.Empty);
//The Client certificate should always require a password
if (!string.IsNullOrWhiteSpace(this.config[ClientCertParam]))
{
OnDecryptRequestArgs certDecryptArgs = new OnDecryptRequestArgs(this.config[CertPasswordParam]);
OnDecryptRequest(this, certDecryptArgs);
string clientPassword = certDecryptArgs.DecryptedValue;
clientCert = ListenerAdvanced.LoadCertificate(File.Parse(this.config[ClientCertParam]), clientPassword);
}
if (Enum.TryParse(this.config[SecureProtocolParam], out MqttSslProtocols parsedProtocol))
{
protocol = parsedProtocol;
}
}
return(new MqttClient(
this.config[BrokerParam]
, Int32.TryParse(this.config[BrokerPortParam], out int port) && port > 0 ? port : 1883
, secure
, caCert
, clientCert
, protocol
, null));
}
}
