http_ntlm.c

    memcpy(&ntlmbuf[size], host, hostlen);
    size += hostlen;

#endif

    /* convert the binary blob into base64 */
    size = Curl_base64_encode((char *)ntlmbuf, size, &base64);

    if(size >0 ) {
      Curl_safefree(*allocuserpwd);
      *allocuserpwd = aprintf("%sAuthorization: NTLM %s\r\n",
                              proxy?"Proxy-":"",
                              base64);
      free(base64);
    }
    else
      return CURLE_OUT_OF_MEMORY; /* FIX TODO */

    ntlm->state = NTLMSTATE_TYPE3; /* we sent a type-3 */
    authp->done = TRUE;
  }
  break;

  case NTLMSTATE_TYPE3:
    /* connection is already authenticated,
     * don't send a header in future requests */
    if(*allocuserpwd) {
      free(*allocuserpwd);
      *allocuserpwd=NULL;
    }
    authp->done = TRUE;
    break;
  }

  return CURLE_OK;
}


void
Curl_ntlm_cleanup(struct connectdata *conn)
{
#ifdef USE_WINDOWS_SSPI
  ntlm_sspi_cleanup(&conn->ntlm);
  ntlm_sspi_cleanup(&conn->proxyntlm);
  if (s_hSecDll != NULL) {
    FreeLibrary(s_hSecDll);
    s_hSecDll = NULL;
    s_pSecFn = NULL;
  }
#else
  (void)conn;
#endif
}

#endif /* USE_NTLM */
#endif /* !CURL_DISABLE_HTTP */