private WindowsIdentity Logon()
{
try
{
const int LOGON32_LOGON_NETWORK = 3;
const int LOGON32_PROVIDER_DEFAULT = 0;
// attempt to authenticate domain user account
bool logonSucceeded = Shell32.LogonUser(this.m_Username, this.m_Domain, this.m_Password, LOGON32_LOGON_NETWORK, LOGON32_PROVIDER_DEFAULT, ref tokenHandle);
if (!logonSucceeded)
{
this.WriteToEventLog(string.Format("Impersonation failed for user: {0}", this.m_Username), EventLogEntryType.Error);
// if the logon failed, get the error code and throw an exception
throw new LogonException(string.Format(string.Format("User logon failed. Error Number: {0}", Marshal.GetLastWin32Error())));
}
// if logon succeeds, create a WindowsIdentity instance
m_impersonationIdentity = new WindowsIdentity(tokenHandle);
this.WriteToEventLog(string.Format("Success! Impersonate user: {0}", this.m_Username), EventLogEntryType.Information);
return(m_impersonationIdentity);
}
finally
{
}
}