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libspdm_req_set_certificate.c
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libspdm_req_set_certificate.c
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/**
* Copyright Notice:
* Copyright 2021-2024 DMTF. All rights reserved.
* License: BSD 3-Clause License. For full text see link: https://github.com/DMTF/libspdm/blob/main/LICENSE.md
**/
#include "internal/libspdm_requester_lib.h"
#if LIBSPDM_ENABLE_CAPABILITY_SET_CERT_CAP
/**
* This function sends SET_CERTIFICATE
* to set certificate from the device.
*
* @param context A pointer to the SPDM context.
* @param session_id Indicates if it is a secured message protected via SPDM session.
* If session_id is NULL, it is a normal message.
* If session_id is NOT NULL, it is a secured message.
* @param slot_id The number of slot for the certificate chain.
* @param cert_chain The pointer for the certificate chain to set.
* The cert chain is a full SPDM certificate chain, including Length and Root Cert Hash.
* @param cert_chain_size The size of the certificate chain to set.
* @param request_attribute Set certificate request attributes. This field is only used for SPDM 1.3 and above.
* And the bit[0~3] of request_attribute must be 0.
* @param key_pair_id The value of this field shall be the unique key pair number identifying the desired
* asymmetric key pair to associate with SlotID .
*
* @retval RETURN_SUCCESS The measurement is got successfully.
* @retval RETURN_DEVICE_ERROR A device error occurs when communicates with the device.
* @retval RETURN_SECURITY_VIOLATION Any verification fails.
**/
static libspdm_return_t libspdm_try_set_certificate(libspdm_context_t *spdm_context,
const uint32_t *session_id, uint8_t slot_id,
void *cert_chain, size_t cert_chain_size,
uint8_t request_attribute,
uint8_t key_pair_id)
{
libspdm_return_t status;
spdm_set_certificate_request_t *spdm_request;
size_t spdm_request_size;
spdm_set_certificate_response_t *spdm_response;
size_t spdm_response_size;
size_t transport_header_size;
uint8_t *message;
size_t message_size;
libspdm_session_info_t *session_info;
libspdm_session_state_t session_state;
LIBSPDM_ASSERT(slot_id < SPDM_MAX_SLOT_COUNT);
if (libspdm_get_connection_version(spdm_context) < SPDM_MESSAGE_VERSION_12) {
return LIBSPDM_STATUS_UNSUPPORTED_CAP;
}
if (libspdm_get_connection_version (spdm_context) < SPDM_MESSAGE_VERSION_13) {
if ((cert_chain == NULL) || (cert_chain_size == 0)) {
return LIBSPDM_STATUS_INVALID_PARAMETER;
}
}
if (libspdm_get_connection_version (spdm_context) >= SPDM_MESSAGE_VERSION_13) {
const uint8_t set_cert_model =
(request_attribute & SPDM_SET_CERTIFICATE_REQUEST_ATTRIBUTES_CERT_MODEL_MASK) >>
SPDM_SET_CERTIFICATE_REQUEST_ATTRIBUTES_CERT_MODEL_OFFSET;
/* SET_CERT_CAP for a 1.2 Responder is not checked because it was not defined
* in SPDM 1.2.0. */
if (!libspdm_is_capabilities_flag_supported(
spdm_context, true, 0,
SPDM_GET_CAPABILITIES_RESPONSE_FLAGS_SET_CERT_CAP)) {
return LIBSPDM_STATUS_UNSUPPORTED_CAP;
}
if (spdm_context->connection_info.multi_key_conn_rsp) {
if (key_pair_id == 0) {
return LIBSPDM_STATUS_INVALID_PARAMETER;
}
if ((request_attribute & SPDM_SET_CERTIFICATE_REQUEST_ATTRIBUTES_ERASE) == 0) {
if ((set_cert_model == SPDM_CERTIFICATE_INFO_CERT_MODEL_NONE) ||
(set_cert_model > SPDM_CERTIFICATE_INFO_CERT_MODEL_GENERIC_CERT)) {
return LIBSPDM_STATUS_INVALID_PARAMETER;
}
}
} else {
if ((key_pair_id != 0) || (set_cert_model != 0)) {
return LIBSPDM_STATUS_INVALID_PARAMETER;
}
}
}
if (spdm_context->connection_info.connection_state < LIBSPDM_CONNECTION_STATE_NEGOTIATED) {
return LIBSPDM_STATUS_INVALID_STATE_LOCAL;
}
if (session_id != NULL) {
session_info = libspdm_get_session_info_via_session_id(
spdm_context, *session_id);
if (session_info == NULL) {
LIBSPDM_ASSERT(false);
return LIBSPDM_STATUS_INVALID_STATE_LOCAL;
}
session_state = libspdm_secured_message_get_session_state(
session_info->secured_message_context);
if (session_state != LIBSPDM_SESSION_STATE_ESTABLISHED) {
return LIBSPDM_STATUS_INVALID_STATE_LOCAL;
}
}
transport_header_size = spdm_context->local_context.capability.transport_header_size;
status = libspdm_acquire_sender_buffer (spdm_context, &message_size, (void **)&message);
if (LIBSPDM_STATUS_IS_ERROR(status)) {
return status;
}
LIBSPDM_ASSERT (message_size >= transport_header_size +
spdm_context->local_context.capability.transport_tail_size);
spdm_request = (void *)(message + transport_header_size);
spdm_request_size = message_size - transport_header_size -
spdm_context->local_context.capability.transport_tail_size;
spdm_request->header.spdm_version = libspdm_get_connection_version (spdm_context);
spdm_request->header.request_response_code = SPDM_SET_CERTIFICATE;
spdm_request->header.param1 = slot_id & SPDM_SET_CERTIFICATE_REQUEST_SLOT_ID_MASK;
spdm_request->header.param2 = 0;
if (spdm_request->header.spdm_version >= SPDM_MESSAGE_VERSION_13) {
/*And the bit[0~3] of request_attribute must be 0.*/
if ((request_attribute & SPDM_SET_CERTIFICATE_REQUEST_SLOT_ID_MASK) != 0) {
return LIBSPDM_STATUS_INVALID_PARAMETER;
}
if ((request_attribute & SPDM_SET_CERTIFICATE_REQUEST_ATTRIBUTES_ERASE) != 0) {
/*the CertChain field shall be absent*/
cert_chain_size = 0;
/*the value of SetCertModel shall be zero*/
spdm_request->header.param1 &= ~SPDM_SET_CERTIFICATE_REQUEST_ATTRIBUTES_CERT_MODEL_MASK;
/*set Erase bit */
spdm_request->header.param1 |= SPDM_SET_CERTIFICATE_REQUEST_ATTRIBUTES_ERASE;
}
if (spdm_context->connection_info.multi_key_conn_rsp) {
spdm_request->header.param2 = key_pair_id;
}
}
LIBSPDM_ASSERT(spdm_request->header.spdm_version >= SPDM_MESSAGE_VERSION_12);
if ((libspdm_get_connection_version (spdm_context) < SPDM_MESSAGE_VERSION_13) ||
(cert_chain_size != 0)) {
if (cert_chain == NULL) {
return LIBSPDM_STATUS_INVALID_PARAMETER;
}
libspdm_copy_mem(spdm_request + 1,
spdm_request_size - sizeof(spdm_set_certificate_request_t),
(uint8_t *)cert_chain, cert_chain_size);
}
spdm_request_size = sizeof(spdm_set_certificate_request_t) + cert_chain_size;
status = libspdm_send_spdm_request(spdm_context, session_id, spdm_request_size, spdm_request);
if (LIBSPDM_STATUS_IS_ERROR(status)) {
libspdm_release_sender_buffer (spdm_context);
return status;
}
libspdm_release_sender_buffer (spdm_context);
spdm_request = (void *)spdm_context->last_spdm_request;
/* receive */
status = libspdm_acquire_receiver_buffer (spdm_context, &message_size, (void **)&message);
if (LIBSPDM_STATUS_IS_ERROR(status)) {
return status;
}
LIBSPDM_ASSERT (message_size >= transport_header_size);
spdm_response = (void *)(message);
spdm_response_size = message_size;
libspdm_zero_mem(spdm_response, spdm_response_size);
status = libspdm_receive_spdm_response(spdm_context, session_id,
&spdm_response_size, (void **)&spdm_response);
if (LIBSPDM_STATUS_IS_ERROR(status)) {
goto receive_done;
}
if (spdm_response_size < sizeof(spdm_message_header_t)) {
status = LIBSPDM_STATUS_INVALID_MSG_SIZE;
goto receive_done;
}
if (spdm_response->header.spdm_version != spdm_request->header.spdm_version) {
status = LIBSPDM_STATUS_INVALID_MSG_FIELD;
goto receive_done;
}
if (spdm_response->header.request_response_code == SPDM_ERROR) {
status = libspdm_handle_error_response_main(
spdm_context, NULL,
&spdm_response_size,
(void **)&spdm_response, SPDM_SET_CERTIFICATE, SPDM_SET_CERTIFICATE_RSP);
if (LIBSPDM_STATUS_IS_ERROR(status)) {
goto receive_done;
}
} else if (spdm_response->header.request_response_code != SPDM_SET_CERTIFICATE_RSP) {
status = LIBSPDM_STATUS_INVALID_MSG_FIELD;
goto receive_done;
}
if ((spdm_response->header.param1 & SPDM_CERTIFICATE_RESPONSE_SLOT_ID_MASK) != slot_id) {
status = LIBSPDM_STATUS_INVALID_MSG_FIELD;
goto receive_done;
}
/* -=[Log Message Phase]=- */
#if LIBSPDM_ENABLE_MSG_LOG
libspdm_append_msg_log(spdm_context, spdm_response, spdm_response_size);
#endif /* LIBSPDM_ENABLE_MSG_LOG */
status = LIBSPDM_STATUS_SUCCESS;
receive_done:
libspdm_release_receiver_buffer (spdm_context);
return status;
}
libspdm_return_t libspdm_set_certificate(void *spdm_context,
const uint32_t *session_id, uint8_t slot_id,
void *cert_chain, size_t cert_chain_size)
{
libspdm_context_t *context;
size_t retry;
uint64_t retry_delay_time;
libspdm_return_t status;
context = spdm_context;
context->crypto_request = true;
retry = context->retry_times;
retry_delay_time = context->retry_delay_time;
do {
status = libspdm_try_set_certificate(context, session_id, slot_id,
cert_chain, cert_chain_size, 0, 0);
if ((status != LIBSPDM_STATUS_BUSY_PEER) || (retry == 0)) {
return status;
}
libspdm_sleep(retry_delay_time);
} while (retry-- != 0);
return status;
}
libspdm_return_t libspdm_set_certificate_ex(void *spdm_context,
const uint32_t *session_id, uint8_t slot_id,
void *cert_chain, size_t cert_chain_size,
uint8_t request_attribute,
uint8_t key_pair_id)
{
libspdm_context_t *context;
size_t retry;
uint64_t retry_delay_time;
libspdm_return_t status;
context = spdm_context;
context->crypto_request = true;
retry = context->retry_times;
retry_delay_time = context->retry_delay_time;
do {
status = libspdm_try_set_certificate(context, session_id, slot_id,
cert_chain, cert_chain_size,
request_attribute, key_pair_id);
if ((status != LIBSPDM_STATUS_BUSY_PEER) || (retry == 0)) {
return status;
}
libspdm_sleep(retry_delay_time);
} while (retry-- != 0);
return status;
}
#endif /*LIBSPDM_ENABLE_CAPABILITY_SET_CERT_CAP*/