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added the IMV_ATTESTATION_STATE_NONCE_REQ state

This commit is contained in:
Andreas Steffen 2011-10-09 15:19:03 +02:00
parent 021b7dd9fa
commit efcc2c639e
1 changed files with 159 additions and 5 deletions
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164
src/libimcv/plugins/imv_attestation/imv_attestation.c
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@ -77,11 +77,6 @@ static pts_creds_t *pts_creds;
*/
static credential_manager_t *pts_credmgr;
/**
* TRUE if DH Nonce Parameters Request attribute is sent
*/
static bool dh_nonce_req_sent = FALSE;
/**
* see section 3.7.1 of TCG TNC IF-IMV Specification 1.2
*/
@ -227,16 +222,175 @@ static TNC_Result send_message(TNC_ConnectionID connection_id)
attestation_state = (imv_attestation_state_t*)state;
msg = pa_tnc_msg_create();
<<<<<<< HEAD
if (imv_attestation_build(msg, attestation_state, supported_algorithms,
supported_dh_groups, pts_db))
{
msg->build(msg);
result = imv_attestation->send_message(imv_attestation, connection_id,
msg->get_encoding(msg));
=======
if (handshake_state == IMV_ATTESTATION_STATE_NONCE_REQ &&
!(pts->get_proto_caps(pts) & PTS_PROTO_CAPS_T))
{
DBG1(DBG_IMV, "PTS-IMC has no TPM capability - "
"advancing to PTS measurement phase");
handshake_state = IMV_ATTESTATION_STATE_MEAS;
>>>>>>> added the IMV_ATTESTATION_STATE_NONCE_REQ state
}
else
{
<<<<<<< HEAD
result = TNC_RESULT_FATAL;
=======
case IMV_ATTESTATION_STATE_INIT:
{
pts_proto_caps_flag_t flags;
/* Send Request Protocol Capabilities attribute */
flags = pts->get_proto_caps(pts);
attr = tcg_pts_attr_proto_caps_create(flags, TRUE);
attr->set_noskip_flag(attr, TRUE);
msg->add_attribute(msg, attr);
/* Send Measurement Algorithms attribute */
attr = tcg_pts_attr_meas_algo_create(supported_algorithms, FALSE);
attr->set_noskip_flag(attr, TRUE);
msg->add_attribute(msg, attr);
attestation_state->set_handshake_state(attestation_state,
IMV_ATTESTATION_STATE_NONCE_REQ);
break;
}
case IMV_ATTESTATION_STATE_NONCE_REQ:
{
int min_nonce_len;
/* Send DH nonce parameters request attribute */
min_nonce_len = lib->settings->get_int(lib->settings,
"libimcv.plugins.imv-attestation.min_nonce_len", 0);
attr = tcg_pts_attr_dh_nonce_params_req_create(min_nonce_len,
supported_dh_groups);
attr->set_noskip_flag(attr, TRUE);
msg->add_attribute(msg, attr);
attestation_state->set_handshake_state(attestation_state,
IMV_ATTESTATION_STATE_TPM_INIT);
break;
}
case IMV_ATTESTATION_STATE_TPM_INIT:
{
pts_meas_algorithms_t selected_algorithm;
chunk_t initiator_value, initiator_nonce;
/* Send DH nonce finish attribute */
selected_algorithm = pts->get_meas_algorithm(pts);
pts->get_my_public_value(pts, &initiator_value, &initiator_nonce);
attr = tcg_pts_attr_dh_nonce_finish_create(selected_algorithm,
initiator_value, initiator_nonce);
attr->set_noskip_flag(attr, TRUE);
msg->add_attribute(msg, attr);
/* Send Get TPM Version attribute */
attr = tcg_pts_attr_get_tpm_version_info_create();
attr->set_noskip_flag(attr, TRUE);
msg->add_attribute(msg, attr);
/* Send Get AIK attribute */
attr = tcg_pts_attr_get_aik_create();
attr->set_noskip_flag(attr, TRUE);
msg->add_attribute(msg, attr);
attestation_state->set_handshake_state(attestation_state,
IMV_ATTESTATION_STATE_MEAS);
break;
}
case IMV_ATTESTATION_STATE_MEAS:
{
enumerator_t *enumerator;
u_int32_t delimiter = SOLIDUS_UTF;
char *platform_info, *pathname;
u_int16_t request_id;
int id, type;
bool is_dir;
attestation_state->set_handshake_state(attestation_state,
IMV_ATTESTATION_STATE_COMP_EVID);
/* Get Platform and OS of the PTS-IMC */
platform_info = pts->get_platform_info(pts);
if (!pts_db || !platform_info)
{
DBG1(DBG_IMV, "%s%s%s not available",
(pts_db) ? "" : "pts database",
(!pts_db && !platform_info) ? "and" : "",
(platform_info) ? "" : "platform info");
break;
}
DBG1(DBG_IMV, "platform is '%s'", platform_info);
/* Send Request File Metadata attribute */
attr = tcg_pts_attr_req_file_meta_create(FALSE, SOLIDUS_UTF, "/etc/tnc_config");
attr->set_noskip_flag(attr, TRUE);
msg->add_attribute(msg, attr);
/* Send Request File Measurement attribute */
enumerator = pts_db->create_file_enumerator(pts_db, platform_info);
if (!enumerator)
{
break;
}
while (enumerator->enumerate(enumerator, &id, &type, &pathname))
{
is_dir = (type != 0);
request_id = attestation_state->add_request(attestation_state,
id, is_dir);
DBG2(DBG_IMV, "measurement request %d for %s '%s'",
request_id, is_dir ? "directory" : "file", pathname);
attr = tcg_pts_attr_req_file_meas_create(is_dir, request_id,
delimiter, pathname);
attr->set_noskip_flag(attr, TRUE);
msg->add_attribute(msg, attr);
}
enumerator->destroy(enumerator);
break;
}
case IMV_ATTESTATION_STATE_COMP_EVID:
{
pts_attr_req_funct_comp_evid_flag_t flags;
u_int32_t sub_comp_depth;
pts_qualifier_t qualifier;
pts_funct_comp_name_t name;
attestation_state->set_handshake_state(attestation_state,
IMV_ATTESTATION_STATE_END);
flags = PTS_REQ_FUNC_COMP_FLAG_PCR;
sub_comp_depth = 0;
qualifier.kernel = FALSE;
qualifier.sub_component = FALSE;
qualifier.type = PTS_FUNC_COMP_TYPE_ALL;
name = PTS_FUNC_COMP_NAME_BIOS;
/* Send Request Functional Component Evidence attribute */
attr = tcg_pts_attr_req_funct_comp_evid_create(flags, sub_comp_depth,
PEN_TCG, qualifier, name);
attr->set_noskip_flag(attr, TRUE);
msg->add_attribute(msg, attr);
/* Send Generate Attestation Evidence attribute */
attr = tcg_pts_attr_gen_attest_evid_create();
attr->set_noskip_flag(attr, TRUE);
msg->add_attribute(msg, attr);
break;
}
default:
DBG1(DBG_IMV, "Attestation IMV is in unknown state: \"%s\"",
handshake_state);
return TNC_RESULT_FATAL;
>>>>>>> added the IMV_ATTESTATION_STATE_NONCE_REQ state
}
msg->destroy(msg);