/// <summary>
/// Connects to LDAP Server according to user's credentials.
/// (These credentials have been stored in the SessionProperties object
/// during the Gateway stage.)
/// Retrieves the name of the script file on the user's LDAP account.
/// </summary>
private void LdapPart(SessionChangeDescription changeDescription, SessionProperties properties)
{
// initializes and sets up a new Ldap connection
LdapInitialization(properties);
// Get the LdapServer object from the session properties (created in LdapInitialization)
LdapServer server = properties.GetTrackedSingle <LdapServer>();
if (server == null)
{
pluginImpl_logger.ErrorFormat("Internal error: LdapServer object not available.");
return;
}
try
{
pluginImpl_logger.DebugFormat("AuthenticateUser({0})", properties.Id.ToString());
// retrieving user's information stored during Gateway stage
Shared.Types.UserInformation userInfo = properties.GetTrackedSingle <Shared.Types.UserInformation>();
string userLogin = properties.GetTracked <string>("UserLogin");
string userPassword = properties.GetTracked <string>("UserPassword");
pluginImpl_logger.DebugFormat("Received username: {0}", userLogin);
// Authenticate the login
pluginImpl_logger.DebugFormat("Attempting authentication for {0}", userLogin);
BooleanResult authenticateBool = server.Authenticate(userLogin, userPassword);
if (!authenticateBool.Success) // authentication and attribute value retrieving didn't work
{
pluginImpl_logger.ErrorFormat("LDAP Authentication failed. {0}", authenticateBool.Message);
return;
}
// retrieves the script name from Ldap
this.scriptName = server.GetScriptName();
pluginImpl_logger.DebugFormat("Name of the script file: {0}", this.scriptName);
// cleans up any resources held by the plugin
LdapEnd(properties);
}
catch (Exception e)
{
if (e is LdapException)
{
LdapException ldapEx = (e as LdapException);
if (ldapEx.ErrorCode == 81)
{
// Server can't be contacted, set server object to null
pluginImpl_logger.ErrorFormat("Server unavailable: {0}, {1}", ldapEx.ServerErrorMessage, e.Message);
server.Close();
properties.AddTrackedSingle <LdapServer>(null);
return;
}
}
// This is an unexpected error, so set LdapServer object to null, because
// subsequent stages shouldn't use it, and this indicates to later stages
// that this stage failed unexpectedly.
server.Close();
properties.AddTrackedSingle <LdapServer>(null);
pluginImpl_logger.ErrorFormat("Exception in LDAP authentication: {0}", e);
throw; // Allow pGina service to catch and handle exception
}
}
/// <summary>
/// ldap initialization and set-up
/// </summary>
public void LdapInitialization(SessionProperties props)
{
pluginImpl_logger.Debug("LDAP server initialization and set-up.");
try
{
LdapServer serv = new LdapServer();
props.AddTrackedSingle<LdapServer>(serv);
}
catch (Exception e)
{
pluginImpl_logger.ErrorFormat("Failed to create LdapServer: {0}", e);
props.AddTrackedSingle<LdapServer>(null);
}
}
