/// <summary>
/// Connect to the MySQL server.
/// </summary>
private bool connect()
{
bool connect = true;
if (!string.IsNullOrWhiteSpace(this.connection.SSHHostname))
connect = this.setupSSH();
if (connect) {
// Need username?
if (this.connection.MySQLUsername == "") {
this.log("Requesting MySQL username from user.");
fmRequestInput dialog = new fmRequestInput("Enter your MySQL username to connect.");
DialogResult dialogResult = dialog.ShowDialog(this);
if (dialogResult == System.Windows.Forms.DialogResult.OK)
this.connection.MySQLUsername = dialog.tbInput.Text.Trim();
else {
this.log("User aborted the connect process.", ICON_WARNING);
return false;
}
}
// Need password?
if (this.connection.MySQLPassword == "") {
this.log("Requesting MySQL password from user.");
fmRequestInput dialog = new fmRequestInput("Enter your MySQL password to connect.", true);
DialogResult dialogResult = dialog.ShowDialog(this);
if (dialogResult == System.Windows.Forms.DialogResult.OK)
this.connection.MySQLPassword = Encryption.Encrypt(dialog.tbInput.Text);
else {
this.log("User aborted the connect process.", ICON_WARNING);
return false;
}
}
// Connect.
try {
this.log("Attempting to connect to MySQL, " + this.connection.MySQLUsername + "@" + this.connection.MySQLHostname + ":" + (this.connection.SSHHostname != "" ? this.connection.ForwardedPort.ToString() : this.connection.MySQLPort.ToString()));
this.connectorConnection = new MySqlConnection("Data Source=" + this.connection.MySQLHostname + ";Port=" + (this.connection.SSHHostname != "" ? this.connection.ForwardedPort.ToString() : this.connection.MySQLPort.ToString()) + ";User Id=" + this.connection.MySQLUsername + ";Password="******"Connected to " + this.connection.MySQLHostname + ":" + this.connection.MySQLPort.ToString());
}
catch (MySqlException mysqlex) {
this.log("Unable to connect to " + this.connection.MySQLHostname + ":" + (this.connection.SSHHostname != "" ? this.connection.LocalForwardedPort.ToString() : this.connection.MySQLPort.ToString()) + " - MySQL Exception: " + mysqlex.Message, ICON_ERROR);
MessageBox.Show(
mysqlex.Message,
"Error",
MessageBoxButtons.OK,
MessageBoxIcon.Error);
return false;
}
catch (Exception ex) {
this.log("Unable to connect to " + this.connection.MySQLHostname + ":" + (this.connection.SSHHostname != "" ? this.connection.LocalForwardedPort.ToString() : this.connection.MySQLPort.ToString()) + " - Exception: " + ex.Message, ICON_ERROR);
MessageBox.Show(
ex.Message,
"Error",
MessageBoxButtons.OK,
MessageBoxIcon.Error);
return false;
}
}
else
return false;
return true;
}
/// <summary>
/// Setup the SSH connection, port forwarding, and connect.
/// </summary>
private bool setupSSH()
{
// Need username?
if (this.connection.SSHUsername == "") {
this.log("Requesting SSH username from user.");
fmRequestInput dialog = new fmRequestInput("Enter your SSH username to connect.");
DialogResult dialogResult = dialog.ShowDialog(this);
if (dialogResult == System.Windows.Forms.DialogResult.OK)
this.connection.SSHUsername = dialog.tbInput.Text.Trim();
else {
this.log("User aborted the connect process.", ICON_WARNING);
return false;
}
}
// Need password?
if (this.connection.SSHPassword == "") {
this.log("Requesting SSH password from user.");
fmRequestInput dialog = new fmRequestInput("Enter your SSH password to connect.", true);
DialogResult dialogResult = dialog.ShowDialog(this);
if (dialogResult == System.Windows.Forms.DialogResult.OK)
this.connection.SSHPassword = Encryption.Encrypt(dialog.tbInput.Text);
else {
this.log("User aborted the connect process.", ICON_WARNING);
return false;
}
}
try {
this.log("Setting up SSH connection.");
this.sshClient = new SshClient(
this.connection.SSHHostname,
(int)this.connection.SSHPort,
this.connection.SSHUsername,
Encryption.Decrypt(this.connection.SSHPassword));
this.log("Attempting to connect to SSH, " + this.connection.SSHUsername + "@" + this.connection.SSHHostname + ":" + this.connection.SSHPort.ToString());
this.sshClient.Connect();
this.log("SSH connected.");
}
catch (SshException sshex) {
this.log("SSH Exception: " + sshex.Message, ICON_ERROR);
return false;
}
catch (Exception ex) {
this.log("Exception: " + ex.Message, ICON_ERROR);
return false;
}
uint localPort = this.connection.LocalForwardedPort;
uint attempts = 1;
uint maxAttempts = 10;
Random random = new Random();
while (true) {
if (this.connection.LocalForwardedPort == 0)
localPort = (uint)random.Next(10000, 65000);
try {
this.log("Attempting (" + attempts.ToString() + " of " + maxAttempts.ToString() + ") to setup port forwarding on local port " + localPort.ToString() + " to remote port " + this.connection.MySQLPort.ToString() + ".");
ForwardedPortLocal forwardedPort = new ForwardedPortLocal(
"127.0.0.1",
localPort,
"localhost",
this.connection.MySQLPort);
this.sshClient.AddForwardedPort(forwardedPort);
forwardedPort.Start();
this.log("Port forwarding successfully setup on local port " + localPort.ToString() + ".");
this.connection.ForwardedPort = localPort;
break;
}
catch (SshException sshex) {
this.log("SSH Exception: " + sshex.Message, ICON_ERROR);
break;
}
catch (Exception ex) {
if (ex.Message == "An attempt was made to access a socket in a way forbidden by its access permissions") {
this.log("Unable to bind local port to " + localPort.ToString() + ". " + ex.Message, ICON_WARNING);
}
else {
this.log("Exception: " + ex.Message, ICON_ERROR);
break;
}
}
localPort++;
attempts++;
if (attempts == maxAttempts) {
this.log("Unable to bind local port for port forwarding. Aborting.", ICON_ERROR);
return false;
}
}
return true;
}
