/// <summary>
/// Callback function when a user clicks on CryptAndSignButton. Processes the input
/// text from MessageTextBox control via GnuPG and displays the output into
/// OutputTextBox control.
///
/// Please note that this function reads the following keys from Web.Config and
/// passes them to the GnuPGWrapper class: "homedirectory" and "passphrase".
/// </summary>
/// <param name="sender">Object that raised the Load event</param>
/// <param name="e">The EventArgs object that contains the event data</param>
private void CryptAndSignButton_Click(object sender, System.EventArgs e)
{
string inputText = MessageTextBox.Text;
string outputText = "";
try
{
// Create GnuPG wrapping class
GnuPGWrapper gpg = new GnuPGWrapper();
// Set parameters from on Web.Config file
gpg.homedirectory = Server.MapPath(ConfigurationSettings.AppSettings["homedirectory"]);
gpg.passphrase = ConfigurationSettings.AppSettings["passphrase"];
gpg.originator = FromTextBox.Text;
gpg.recipient = ToTextBox.Text;
gpg.command = Commands.SignAndEncrypt;
// Execute GnuPG
gpg.ExecuteCommand(inputText, out outputText);
// Display output text
OutputTextBox.Text = outputText;
OutputTextBox.Visible = true;
ErrorMessage.Visible = false;
ExitCodeLabel.Text = gpg.exitcode.ToString();
}
catch (GnuPGException gpge)
{
// Display error message
ErrorMessage.Text = gpge.Message;
ErrorMessage.Visible = true;
OutputTextBox.Visible = false;
}
}
public void Constructor(messagebroker.MessageBroker Broker)
{
this.broker = Broker;
this.FindGnuPG("");
this.gpg = new GnuPGWrapper();
this.gpghomepath = Util.getApplicationPath() + Path.DirectorySeparatorChar + "gnupg";
this.gpg.homedirectory = this.gpghomepath.Replace("file:\\","");
this.gpg.bindirectory = this.gpgpath.Replace("file:\\","");
if (!Directory.Exists(this.gpghomepath)) {
Directory.CreateDirectory(this.gpghomepath.Replace("file:\\", ""));
}
// Find key id for UUID@Hostname
this.gpg.command = Commands.FindKey;
this.gpg.arguments = this.broker.UUID + "@" + this.broker.Hostname;
string outputtext = "";
string keyid = "";
try
{
this.gpg.ExecuteCommand("", out outputtext);
Util.log(this.ToString(), 99, outputtext);
}
// If keyid does not exist
catch(GnuPGException ex)
{
// generate host key
}
// Save keyid for later
// Download any new information for keyid from pgp.mit.edu
// Send keyid to pgp.mit.edu (if anything needs to be sent)
// Use keyid to sign messages from now on.
//
}
private void VerifyButton_Click(object sender, System.EventArgs e)
{
string inputText = MessageTextBox.Text;
string outputText = "";
try
{
// Create GnuPG wrapping class
GnuPGWrapper gpg = new GnuPGWrapper();
// Set parameters from on Web.Config file
gpg.homedirectory = Server.MapPath(ConfigurationSettings.AppSettings["homedirectory"]);
gpg.passphrase = ConfigurationSettings.AppSettings["passphrase"];
gpg.originator = FromTextBox.Text;
gpg.recipient = ""; // no recipient needed for verify only
gpg.command = Commands.Verify;
// Execute GnuPG
gpg.ExecuteCommand(inputText, out outputText);
// Display output text
OutputTextBox.Text = outputText;
OutputTextBox.Visible = true;
ErrorMessage.Visible = false;
ExitCodeLabel.Text = gpg.exitcode.ToString();
}
catch (GnuPGException gpge)
{
// Display error message
ErrorMessage.Text = gpge.Message;
ErrorMessage.Visible = true;
OutputTextBox.Visible = false;
}
}