static SecurityContext AuthenticateClient(TransportClient client)
{
TransportStream stream = client.GetStream();
byte[] clientToken;
byte[] serverToken;
// create client context
SecurityContext clientContext = authModule.CreateSecurityContext(clientCredentials, SecurityContextAttributes.Identify, null, out clientToken);
while (true)
{
if (clientToken != null)
{
// send client token to server
SendBuffer(stream, clientToken);
}
if (clientContext.State == SecurityContextState.Completed)
{
// authentication completed
break;
}
// receive server token
serverToken = ReceiveBuffer(stream);
// update security context
authModule.UpdateSecurityContext(clientContext, SecurityContextAttributes.Identify, serverToken, out clientToken);
}
return(clientContext);
}
private string SendSspiAuthentication()
{
try {
// initialize network transport
TransportClient client =
new TransportClient(this.Repository.CvsRoot.ToString(),
typeof(CvsTransport));
this.SetInputStream(new CvsStream(client.GetStream()));
this.SetOutputStream(this.InputStream);
this.OutputStream.SendString("BEGIN SSPI\n");
string[] names = System.Enum.GetNames(typeof(EncryptionType));
string protocols = string.Empty;
for (int i = 0; i < names.Length; i++)
{
protocols += names[i];
if (i + 1 < names.Length)
{
protocols += ",";
}
}
this.OutputStream.SendString(string.Format("{0}\n", protocols));
string authTypeResponse = this.InputStream.ReadLine();
CurrentEncryptionType = (EncryptionType)
System.Enum.Parse(typeof(EncryptionType), authTypeResponse);
// initialize authorization module
authModule =
new NTAuthModule(new SecurityPackage(CurrentEncryptionType.ToString()));
// acquire client credentials
clientCredentials =
authModule.AcquireSecurityCredentials(SecurityCredentialsType.OutBound, null);
byte[] clientToken;
byte[] serverToken;
// create client context
SecurityContext clientContext =
authModule.CreateSecurityContext(clientCredentials,
SecurityContextAttributes.Identify, null, out clientToken);
while (true)
{
if (clientToken != null)
{
// send client token to server
string clientTokenString =
Encoding.ASCII.GetString(clientToken, 54, 57);
this.OutputStream.SendString(
clientTokenString);
}
if (clientContext.State == SecurityContextState.Completed)
{
// authentication completed
break;
}
// receive server token
serverToken =
Encoding.ASCII.GetBytes(this.InputStream.ReadToFirstWS());
// update security context
authModule.UpdateSecurityContext(clientContext,
SecurityContextAttributes.Identify, serverToken, out clientToken);
}
// AuthenticateClient(client);
return(InputStream.ReadLine());
} catch (IOException e) {
String msg = "Failed to read line from server. " +
"It is possible that the remote server was down.";
LOGGER.Error(msg, e);
throw new AuthenticationException(msg);
}
}
private string SendSspiAuthentication () {
try {
// initialize network transport
TransportClient client =
new TransportClient(this.Repository.CvsRoot.ToString(),
typeof(CvsTransport));
this.SetInputStream(new CvsStream(client.GetStream()));
this.SetOutputStream(this.InputStream);
this.OutputStream.SendString("BEGIN SSPI\n");
string[] names = System.Enum.GetNames(typeof(EncryptionType));
string protocols = string.Empty;
for (int i = 0; i < names.Length; i++) {
protocols += names[i];
if (i + 1 < names.Length) {
protocols += ",";
}
}
this.OutputStream.SendString(string.Format("{0}\n", protocols));
string authTypeResponse = this.InputStream.ReadLine();
CurrentEncryptionType = (EncryptionType)
System.Enum.Parse(typeof(EncryptionType), authTypeResponse);
// initialize authorization module
authModule =
new NTAuthModule(new SecurityPackage(CurrentEncryptionType.ToString()));
// acquire client credentials
clientCredentials =
authModule.AcquireSecurityCredentials(SecurityCredentialsType.OutBound, null);
byte[] clientToken;
byte[] serverToken;
// create client context
SecurityContext clientContext =
authModule.CreateSecurityContext(clientCredentials,
SecurityContextAttributes.Identify, null, out clientToken);
while (true) {
if (clientToken != null) {
// send client token to server
string clientTokenString =
Encoding.ASCII.GetString(clientToken, 54, 57);
this.OutputStream.SendString(
clientTokenString);
}
if (clientContext.State == SecurityContextState.Completed) {
// authentication completed
break;
}
// receive server token
serverToken =
Encoding.ASCII.GetBytes(this.InputStream.ReadToFirstWS());
// update security context
authModule.UpdateSecurityContext(clientContext,
SecurityContextAttributes.Identify, serverToken, out clientToken);
}
// AuthenticateClient(client);
return InputStream.ReadLine();
} catch (IOException e) {
String msg = "Failed to read line from server. " +
"It is possible that the remote server was down.";
LOGGER.Error (msg, e);
throw new AuthenticationException (msg);
}
}
