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GET_SUPPORTED_EVENT_TYPES
This commit implements the basic functionality for the Requester portion of `GET_SUPPORTED_EVENT_TYPES` / `SUPPORTED_EVENT_TYPES`. It includes simple unit tests that are to be fleshed out later on. Signed-off-by: Steven Bellock <[email protected]>
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library/spdm_requester_lib/libspdm_req_get_event_types.c
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,172 @@ | ||
| /** | ||
| * Copyright Notice: | ||
| * Copyright 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" | ||
|
|
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| #if LIBSPDM_EVENT_RECIPIENT_SUPPORT | ||
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| static libspdm_return_t libspdm_try_get_event_types(libspdm_context_t *spdm_context, | ||
| uint32_t session_id, | ||
| uint8_t *event_group_count, | ||
| uint32_t *supported_event_groups_list_len, | ||
| void *supported_event_groups_list) | ||
| { | ||
| libspdm_return_t status; | ||
| libspdm_session_info_t *session_info; | ||
| spdm_get_supported_event_types_request_t *spdm_request; | ||
| size_t spdm_request_size; | ||
| spdm_supported_event_types_response_t *spdm_response; | ||
| size_t spdm_response_size; | ||
| size_t transport_header_size; | ||
| uint8_t *message; | ||
| size_t message_size; | ||
|
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| /* -=[Check Parameters Phase]=- */ | ||
| LIBSPDM_ASSERT(event_group_count != NULL); | ||
| LIBSPDM_ASSERT(supported_event_groups_list_len != NULL); | ||
| LIBSPDM_ASSERT(supported_event_groups_list != NULL); | ||
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| session_info = libspdm_get_session_info_via_session_id(spdm_context, session_id); | ||
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| if (session_info == NULL) { | ||
| LIBSPDM_ASSERT(false); | ||
| return LIBSPDM_STATUS_INVALID_STATE_LOCAL; | ||
| } | ||
| if (libspdm_secured_message_get_session_state(session_info->secured_message_context) != | ||
| LIBSPDM_SESSION_STATE_ESTABLISHED) { | ||
| return LIBSPDM_STATUS_INVALID_STATE_LOCAL; | ||
| } | ||
|
|
||
| /* -=[Verify State Phase]=- */ | ||
| if (libspdm_get_connection_version(spdm_context) < SPDM_MESSAGE_VERSION_13) { | ||
| return LIBSPDM_STATUS_UNSUPPORTED_CAP; | ||
| } | ||
| if (!libspdm_is_capabilities_flag_supported( | ||
| spdm_context, true, 0, | ||
| SPDM_GET_CAPABILITIES_RESPONSE_FLAGS_EVENT_CAP)) { | ||
| return LIBSPDM_STATUS_UNSUPPORTED_CAP; | ||
| } | ||
|
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| /* -=[Construct Request Phase]=- */ | ||
| 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; | ||
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| spdm_request->header.spdm_version = libspdm_get_connection_version(spdm_context); | ||
| spdm_request->header.request_response_code = SPDM_GET_SUPPORTED_EVENT_TYPES; | ||
| spdm_request->header.param1 = 0; | ||
| spdm_request->header.param2 = 0; | ||
| spdm_request_size = sizeof(spdm_heartbeat_request_t); | ||
|
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| /* -=[Send Request Phase]=- */ | ||
| 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; | ||
|
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| /* -=[Receive Response Phase]=- */ | ||
| 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; | ||
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| 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; | ||
| } | ||
|
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| /* -=[Validate Response Phase]=- */ | ||
| 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, &session_id, | ||
| &spdm_response_size, (void **)&spdm_response, | ||
| SPDM_GET_SUPPORTED_EVENT_TYPES, SPDM_SUPPORTED_EVENT_TYPES); | ||
| if (LIBSPDM_STATUS_IS_ERROR(status)) { | ||
| goto receive_done; | ||
| } | ||
| } else if (spdm_response->header.request_response_code != SPDM_SUPPORTED_EVENT_TYPES) { | ||
| status = LIBSPDM_STATUS_INVALID_MSG_FIELD; | ||
| goto receive_done; | ||
| } | ||
| if (spdm_response->header.param1 == 0) { | ||
| status = LIBSPDM_STATUS_INVALID_MSG_FIELD; | ||
| goto receive_done; | ||
| } | ||
| if (spdm_response->supported_event_groups_list_len == 0) { | ||
| status = LIBSPDM_STATUS_INVALID_MSG_FIELD; | ||
| goto receive_done; | ||
| } else if (spdm_response->supported_event_groups_list_len > *supported_event_groups_list_len) { | ||
| status = LIBSPDM_STATUS_BUFFER_TOO_SMALL; | ||
| goto receive_done; | ||
| } | ||
|
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| /* -=[Process Response Phase]=- */ | ||
| *event_group_count = spdm_response->header.param1; | ||
| libspdm_copy_mem(supported_event_groups_list, *supported_event_groups_list_len, | ||
| spdm_response + 1, spdm_response->supported_event_groups_list_len); | ||
| *supported_event_groups_list_len = spdm_response->supported_event_groups_list_len; | ||
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| receive_done: | ||
| libspdm_release_receiver_buffer(spdm_context); | ||
|
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| return status; | ||
| } | ||
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| libspdm_return_t libspdm_get_event_types(void *spdm_context, | ||
| uint32_t session_id, | ||
| uint8_t *event_group_count, | ||
| uint32_t *supported_event_groups_list_len, | ||
| void *supported_event_groups_list) | ||
| { | ||
| size_t retry; | ||
| uint64_t retry_delay_time; | ||
| libspdm_return_t status; | ||
| libspdm_context_t *context; | ||
|
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| context = spdm_context; | ||
| context->crypto_request = true; | ||
| retry = context->retry_times; | ||
| retry_delay_time = context->retry_delay_time; | ||
| do { | ||
| status = libspdm_try_get_event_types(context, | ||
| session_id, | ||
| event_group_count, | ||
| supported_event_groups_list_len, | ||
| supported_event_groups_list); | ||
| if ((status != LIBSPDM_STATUS_BUSY_PEER) || (retry == 0)) { | ||
| return status; | ||
| } | ||
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| libspdm_sleep(retry_delay_time); | ||
| } while (retry-- != 0); | ||
|
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| return status; | ||
| } | ||
|
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| #endif /* LIBSPDM_EVENT_RECIPIENT_SUPPORT */ |
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