/// <summary>
/// Connect the management logic to OpenVPN
/// </summary>
protected bool connectLogic()
{
m_ovpnMLogic.reset();
for (int i = 0; i < 8; ++i)
{
try
{
System.Threading.Thread.Sleep(500); // TODO: 500
m_ovpnMLogic.connect();
return(true);
}
catch (System.Net.Sockets.SocketException ex)
{
m_logs.logDebugLine(1, "Could not establish connection " +
"to management interface:" + ex.Message);
if (i != 5)
{
m_logs.logDebugLine(1, "Trying again in a second");
System.Threading.Thread.Sleep(500);
}
}
}
m_logs.logDebugLine(1, "Could not establish connection, abording");
m_state = OVPNState.RUNNING;
disconnect();
while (m_state != OVPNState.STOPPED)
{
Thread.Sleep(200);
}
changeState(OVPNState.ERROR);
return(false);
}
/// <summary>
/// Start the OpenVPN binary.
/// </summary>
public void start()
{
m_logs.logDebugLine(1, "Starting OpenVPN");
m_logs.logLine(OVPNLogEventArgs.LogType.MGNMT, "Starting OpenVPN...");
m_process = new Process();
m_process.StartInfo = m_psi;
m_process.Exited += new EventHandler(this.exited_event);
m_process.EnableRaisingEvents = true;
try
{
m_process.Start();
} catch (System.ComponentModel.Win32Exception) {
m_logs.logLine(OVPNLogEventArgs.LogType.MGNMT, "Could not start OpenVPN");
return;
}
m_logs.logDebugLine(1, "Started");
m_logs.logLine(OVPNLogEventArgs.LogType.MGNMT, "OpenVPN is running");
running = true;
}
/// <summary>
/// a line was received, this method parses it and calls methods
/// in the management logic.
/// </summary>
/// <param name="sender">ignored</param>
/// <param name="e">information about the received line</param>
/// <remarks>
/// This method is not thread save!
/// But there is no need to call it from more than one thread.
/// Only the thread which holds the management connection calls this event.
/// </remarks>
private void oc_gotLine(object sender, GotLineEventArgs e)
{
// drop a line
m_logs.logDebugLine(10, "Got: " + e.line);
string s = e.line;
// some lines start with a ">" (see link above)
// they come asynchron and are parsed imediately
if (s.StartsWith(">"))
{
string type = s.Substring(1, s.IndexOf(":") - 1);
string msg = s.Substring(type.Length + 2);
string[] infos = null;
AsyncEventDetail.EventType et = AsyncEventDetail.EventType.UNKNOWN;
switch (type)
{
case "ECHO": et = AsyncEventDetail.EventType.ECHO; break;
case "FATAL": et = AsyncEventDetail.EventType.FATAL; break;
case "HOLD": et = AsyncEventDetail.EventType.HOLD; break;
case "INFO": et = AsyncEventDetail.EventType.INFO; break;
case "LOG": et = AsyncEventDetail.EventType.LOG; break;
case "NEED-STR":
et = AsyncEventDetail.EventType.NEEDSTR;
string tmp = msg.Substring(msg.IndexOf('\'') + 1);
infos = new string[] { tmp.Substring(0, tmp.IndexOf('\'')) };
break;
case "STATE":
et = AsyncEventDetail.EventType.STATE;
infos = msg.Split(new char[] { ',' });
break;
case "PASSWORD":
et = AsyncEventDetail.EventType.PASSWORD;
// Several messages format are possible
// * first is a request for a passwd
// >PASSWORD:Need 'Auth' username/password
// or
// >PASSWORD:Need 'Private Key' password
//
// * second is a notification
// >PASSWORD:Verification Failed: 'Auth'
// or
// >PASSWORD:Verification Failed: 'Private Key'
// Let's first determine the PASSWORD message type and thus format
string messType = msg.Substring(0, msg.IndexOf(' ')); // "Need" or "Verification"
if (messType.CompareTo("Need") == 0)
{
string tmp2 = msg.Substring(msg.IndexOf('\'') + 1);
string loginProfile = tmp2.Substring(0, tmp2.IndexOf('\'')); // 'Auth' or 'Private Key' or ...
string loginInfo = tmp2.Substring(tmp2.IndexOf('\'') + 2); // "password" or "username/password"
infos = new string[] { loginProfile, loginInfo, messType };
}
else if (messType.CompareTo("Verification") == 0)
{
string verifMsg = msg.Substring(0, msg.IndexOf(':')); // "Verification Failed"
if (verifMsg.CompareTo("Verification Failed") == 0)
{
string tmp2 = msg.Substring(msg.IndexOf('\'') + 1);
string loginProfile = tmp2.Substring(0, tmp2.IndexOf('\'')); // 'Auth' or 'Private Key' or ...
infos = new string[] { loginProfile, null, verifMsg };
}
}
break;
}
if (et != AsyncEventDetail.EventType.UNKNOWN)
{
m_ol.got_asyncEvent(new AsyncEventDetail(et, msg, infos));
return;
}
}
m_received.Append(s + Environment.NewLine);
s = m_received.ToString();
if (s.StartsWith("SUCCESS: ") || s.StartsWith("ERROR: ") ||
s.StartsWith(">") || s.EndsWith("END" + Environment.NewLine))
{
m_received.Remove(0, m_received.Length);
m_ol.cb_syncEvent(s);
}
}
/// <summary>
/// Connects to the management interface.
/// </summary>
public void connect()
{
m_logs.logLine(OVPNLogEventArgs.LogType.MGNMT, "Connecting to management interface");
m_logs.logDebugLine(1, "Connecting to management interface");
try
{
m_tcpC.Connect(m_host, m_port);
}
catch (SocketException e)
{
m_logs.logDebugLine(1, "Connection failed: " + e.Message);
throw; // new ApplicationException("Could not connect to socket: " + e.Message);
}
m_sread = new StreamReader(m_tcpC.GetStream());
m_swrite = new StreamWriter(m_tcpC.GetStream());
m_reader = new Thread(new ThreadStart(readerThread));
m_reader.Name = "management interface reader thread";
m_reader.Start();
m_connected = true;
}
/// <summary>
/// We got a synchronous message.
/// </summary>
/// <param name="msg">The message</param>
public void cb_syncEvent(string msg)
{
// the reaction depends on what we are waiting for
switch (m_state)
{
// the number of SmartCards
case WaitState.PKCS11_GET_COUNT:
m_pkcs11count = m_ovpnMParser.getPKCS11IDCount(msg);
if (m_pkcs11count == -1)
{
m_logs.logLine(OVPNLogEventArgs.LogType.MGNMT,
"Could not determine the number of pkcs11-ids:\"" +
msg + "\"");
releaseLock();
}
else if (m_pkcs11count == 0)
{
m_logs.logLine(OVPNLogEventArgs.LogType.MGNMT,
"No pkcs11-ids were found");
int id = m_ovpn.getKeyID(new List <PKCS11Detail>());
if (id == OVPNNeedCardIDEventArgs.RETRY)
{
m_ovpnComm.send("pkcs11-id-count");
}
else
{
releaseLock();
}
}
else
{
m_logs.logLine(OVPNLogEventArgs.LogType.MGNMT,
"Got " + m_pkcs11count + " PKCS11-IDs");
m_pkcs11details.Clear();
releaseLock();
setLock(WaitState.PKCS11_GET_KEYS);
m_ovpnComm.send("pkcs11-id-get 0");
}
break;
case WaitState.PKCS11_GET_KEYS:
PKCS11Detail d = m_ovpnMParser.getPKCS11ID(msg);
if (d != null)
{
m_pkcs11details.Add(d);
if (d.nr < m_pkcs11count - 1)
{
m_ovpnComm.send("pkcs11-id-get " + (d.nr + 1));
}
else
{
releaseLock();
int kid = m_ovpn.getKeyID(m_pkcs11details);
if (kid == OVPNNeedCardIDEventArgs.RETRY)
{
setLock(WaitState.PKCS11_GET_COUNT);
m_ovpnComm.send("pkcs11-id-count");
}
else if (kid != OVPNNeedCardIDEventArgs.NONE)
{
m_ovpnComm.send("needstr 'pkcs11-id-request' '" +
m_pkcs11details[kid].id + "'");
}
}
}
// error in parsing
else
{
m_logs.logDebugLine(1,
"Error while parsing pkcs11-id-get: \"" +
msg + "\"");
releaseLock();
}
break;
// logging was turned on, wait for log lines
case WaitState.LOG_ON_ALL_1:
setLock(WaitState.LOG_ON_ALL_2,true);
break;
// logging was turned on
case WaitState.LOG_ON:
case WaitState.LOG_ON_ALL_2:
releaseLock();
string[] m = msg.Split("\n".ToCharArray());
for (int i = 0; i < m.GetUpperBound(0) - 1; ++i)
{
addLog(m[i]);
}
setLock(WaitState.STATE);
m_ovpnComm.send("state on");
break;
// "state" was set
case WaitState.STATE:
releaseLock();
if (m_releaselock)
{
setLock(WaitState.HOLD_RELEASE);
m_ovpnComm.send("hold release");
m_releaselock = false;
}
break;
// hold relese was executed
case WaitState.HOLD_RELEASE:
releaseLock();
break;
// we sent a signal
case WaitState.SIGNAL:
releaseLock();
break;
// something else happened (this should not happen)
// we release the lock
default:
releaseLock();
break;
}
}