/**
* see section 3.8.3 of TCG TNC IF-IMC Specification 1.3
*/
TNC_Result TNC_IMC_BeginHandshake(TNC_IMCID imc_id,
TNC_ConnectionID connection_id)
{
imc_state_t *state;
imc_msg_t *out_msg;
TNC_Result result = TNC_RESULT_SUCCESS;
if (!imc_os)
{
DBG1(DBG_IMC, "IMC \"%s\" has not been initialized", imc_name);
return TNC_RESULT_NOT_INITIALIZED;
}
if (!imc_os->get_state(imc_os, connection_id, &state))
{
return TNC_RESULT_FATAL;
}
if (lib->settings->get_bool(lib->settings,
"libimcv.plugins.imc-os.send_info", TRUE))
{
out_msg = imc_msg_create(imc_os, state, connection_id, imc_id,
TNC_IMVID_ANY, msg_types[0]);
add_product_info(out_msg);
add_string_version(out_msg);
add_op_status(out_msg);
add_fwd_enabled(out_msg);
add_default_pwd_enabled(out_msg);
/* send PA-TNC message with the excl flag not set */
result = out_msg->send(out_msg, FALSE);
out_msg->destroy(out_msg);
}
return result;
}
static TNC_Result receive_message(imc_msg_t *in_msg)
{
imc_msg_t *out_msg;
enumerator_t *enumerator;
pa_tnc_attr_t *attr;
pen_type_t attr_type;
TNC_Result result;
bool fatal_error = FALSE;
/* parse received PA-TNC message and handle local and remote errors */
result = in_msg->receive(in_msg, &fatal_error);
if (result != TNC_RESULT_SUCCESS)
{
return result;
}
out_msg = imc_msg_create_as_reply(in_msg);
/* analyze PA-TNC attributes */
enumerator = in_msg->create_attribute_enumerator(in_msg);
while (enumerator->enumerate(enumerator, &attr))
{
attr_type = attr->get_type(attr);
if (attr_type.vendor_id != PEN_IETF)
{
continue;
}
if (attr_type.type == IETF_ATTR_ATTRIBUTE_REQUEST)
{
ietf_attr_attr_request_t *attr_cast;
pen_type_t *entry;
enumerator_t *e;
attr_cast = (ietf_attr_attr_request_t*)attr;
e = attr_cast->create_enumerator(attr_cast);
while (e->enumerate(e, &entry))
{
if (entry->vendor_id != PEN_IETF)
{
continue;
}
switch (entry->type)
{
case IETF_ATTR_PRODUCT_INFORMATION:
add_product_info(out_msg);
break;
case IETF_ATTR_STRING_VERSION:
add_string_version(out_msg);
break;
case IETF_ATTR_OPERATIONAL_STATUS:
add_op_status(out_msg);
break;
case IETF_ATTR_FORWARDING_ENABLED:
add_fwd_enabled(out_msg);
break;
case IETF_ATTR_FACTORY_DEFAULT_PWD_ENABLED:
add_default_pwd_enabled(out_msg);
break;
case IETF_ATTR_INSTALLED_PACKAGES:
add_installed_packages(out_msg);
break;
default:
break;
}
}
e->destroy(e);
}
}
enumerator->destroy(enumerator);
if (fatal_error)
{
result = TNC_RESULT_FATAL;
}
else
{
result = out_msg->send(out_msg, TRUE);
}
out_msg->destroy(out_msg);
return result;
}
static TNC_Result receive_message(imc_state_t *state, imc_msg_t *in_msg)
{
imc_msg_t *out_msg;
enumerator_t *enumerator;
pa_tnc_attr_t *attr;
pen_type_t type;
TNC_Result result;
bool fatal_error = FALSE;
/* generate an outgoing PA-TNC message - we might need it */
out_msg = imc_msg_create_as_reply(in_msg);
/* parse received PA-TNC message and handle local and remote errors */
result = in_msg->receive(in_msg, out_msg, &fatal_error);
if (result != TNC_RESULT_SUCCESS)
{
out_msg->destroy(out_msg);
return result;
}
/* analyze PA-TNC attributes */
enumerator = in_msg->create_attribute_enumerator(in_msg);
while (enumerator->enumerate(enumerator, &attr))
{
type = attr->get_type(attr);
if (type.vendor_id == PEN_IETF)
{
if (type.type == IETF_ATTR_ATTRIBUTE_REQUEST)
{
ietf_attr_attr_request_t *attr_cast;
pen_type_t *entry;
enumerator_t *e;
attr_cast = (ietf_attr_attr_request_t*)attr;
e = attr_cast->create_enumerator(attr_cast);
while (e->enumerate(e, &entry))
{
if (entry->vendor_id == PEN_IETF)
{
switch (entry->type)
{
case IETF_ATTR_PRODUCT_INFORMATION:
add_product_info(out_msg);
break;
case IETF_ATTR_STRING_VERSION:
add_string_version(out_msg);
break;
case IETF_ATTR_NUMERIC_VERSION:
add_numeric_version(out_msg);
break;
case IETF_ATTR_OPERATIONAL_STATUS:
add_op_status(out_msg);
break;
case IETF_ATTR_FORWARDING_ENABLED:
add_fwd_enabled(out_msg);
break;
case IETF_ATTR_FACTORY_DEFAULT_PWD_ENABLED:
add_default_pwd_enabled(out_msg);
break;
case IETF_ATTR_INSTALLED_PACKAGES:
add_installed_packages(state, out_msg);
break;
default:
break;
}
}
else if (entry->vendor_id == PEN_ITA)
{
switch (entry->type)
{
case ITA_ATTR_DEVICE_ID:
add_device_id(out_msg);
break;
default:
break;
}
}
}
e->destroy(e);
}
}
else if (type.vendor_id == PEN_ITA && type.type == ITA_ATTR_GET_SETTINGS)
{
ita_attr_get_settings_t *attr_cast;
enumerator_t *e;
attr_cast = (ita_attr_get_settings_t*)attr;
e = attr_cast->create_enumerator(attr_cast);
add_settings(e, out_msg);
e->destroy(e);
}
}
enumerator->destroy(enumerator);
if (fatal_error)
{
result = TNC_RESULT_FATAL;
}
else
{
/* send PA-TNC message with the EXCL flag set */
result = out_msg->send(out_msg, TRUE);
}
out_msg->destroy(out_msg);
return result;
}
