LCOV - code coverage report
Current view: top level - library/spdm_responder_lib - libspdm_rsp_event_ack.c (source / functions) Coverage Total Hit
Test: coverage.info Lines: 82.5 % 103 85
Test Date: 2025-10-12 08:10:56 Functions: 100.0 % 1 1

            Line data    Source code
       1              : /**
       2              :  *  Copyright Notice:
       3              :  *  Copyright 2025 DMTF. All rights reserved.
       4              :  *  License: BSD 3-Clause License. For full text see link: https://github.com/DMTF/libspdm/blob/main/LICENSE.md
       5              :  **/
       6              : 
       7              : #include "internal/libspdm_responder_lib.h"
       8              : #include "internal/libspdm_secured_message_lib.h"
       9              : 
      10              : #if LIBSPDM_EVENT_RECIPIENT_SUPPORT
      11              : 
      12           12 : libspdm_return_t libspdm_get_response_send_event(libspdm_context_t *spdm_context,
      13              :                                                  size_t request_size,
      14              :                                                  const void *request,
      15              :                                                  size_t *response_size,
      16              :                                                  void *response)
      17              : {
      18              :     const spdm_send_event_request_t *spdm_request;
      19              :     spdm_event_ack_response_t *spdm_response;
      20              :     libspdm_session_info_t *session_info;
      21              :     libspdm_session_state_t session_state;
      22              :     uint32_t session_id;
      23              :     uint64_t index;
      24              :     uint32_t prev_event_instance_id;
      25              :     uint32_t event_instance_id_min;
      26              :     uint32_t event_instance_id_max;
      27              :     bool events_list_is_sequential;
      28              :     const uint8_t *ptr;
      29           12 :     const uint8_t *end_ptr = (const uint8_t *)request + request_size;
      30              :     size_t calculated_request_size;
      31              : 
      32           12 :     spdm_request = (const spdm_send_event_request_t *)request;
      33              : 
      34              :     /* -=[Check Parameters Phase]=- */
      35           12 :     LIBSPDM_ASSERT(spdm_request->header.request_response_code == SPDM_SEND_EVENT);
      36              : 
      37           12 :     if (libspdm_get_connection_version(spdm_context) < SPDM_MESSAGE_VERSION_13) {
      38            1 :         return libspdm_generate_error_response(spdm_context,
      39              :                                                SPDM_ERROR_CODE_UNSUPPORTED_REQUEST,
      40              :                                                SPDM_SEND_EVENT,
      41              :                                                response_size, response);
      42              :     }
      43              : 
      44           11 :     if (spdm_request->header.spdm_version != libspdm_get_connection_version(spdm_context)) {
      45            1 :         return libspdm_generate_error_response(spdm_context,
      46              :                                                SPDM_ERROR_CODE_VERSION_MISMATCH, 0,
      47              :                                                response_size, response);
      48              :     }
      49           10 :     if (spdm_context->response_state != LIBSPDM_RESPONSE_STATE_NORMAL) {
      50            0 :         return libspdm_responder_handle_response_state(
      51              :             spdm_context,
      52            0 :             spdm_request->header.request_response_code,
      53              :             response_size, response);
      54              :     }
      55              : 
      56           10 :     if (!libspdm_is_capabilities_flag_supported(
      57              :             spdm_context, false,
      58              :             SPDM_GET_CAPABILITIES_REQUEST_FLAGS_EVENT_CAP, 0)) {
      59            1 :         return libspdm_generate_error_response(
      60              :             spdm_context, SPDM_ERROR_CODE_UNSUPPORTED_REQUEST,
      61              :             SPDM_SEND_EVENT, response_size, response);
      62              :     }
      63            9 :     if (spdm_context->connection_info.connection_state < LIBSPDM_CONNECTION_STATE_NEGOTIATED) {
      64            0 :         return libspdm_generate_error_response(spdm_context,
      65              :                                                SPDM_ERROR_CODE_UNEXPECTED_REQUEST,
      66              :                                                0, response_size, response);
      67              :     }
      68              : 
      69            9 :     if (!spdm_context->last_spdm_request_session_id_valid) {
      70            0 :         if (libspdm_get_connection_version(spdm_context) >= SPDM_MESSAGE_VERSION_12) {
      71            0 :             return libspdm_generate_error_response(spdm_context,
      72              :                                                    SPDM_ERROR_CODE_SESSION_REQUIRED, 0,
      73              :                                                    response_size, response);
      74              :         } else {
      75            0 :             return libspdm_generate_error_response(spdm_context,
      76              :                                                    SPDM_ERROR_CODE_UNSPECIFIED, 0,
      77              :                                                    response_size, response);
      78              :         }
      79              :     }
      80            9 :     session_id = spdm_context->last_spdm_request_session_id;
      81            9 :     session_info = libspdm_get_session_info_via_session_id(spdm_context, session_id);
      82            9 :     if (session_info == NULL) {
      83            0 :         if (libspdm_get_connection_version(spdm_context) >= SPDM_MESSAGE_VERSION_12) {
      84            0 :             return libspdm_generate_error_response(spdm_context,
      85              :                                                    SPDM_ERROR_CODE_SESSION_REQUIRED, 0,
      86              :                                                    response_size, response);
      87              :         } else {
      88            0 :             return libspdm_generate_error_response(spdm_context,
      89              :                                                    SPDM_ERROR_CODE_UNSPECIFIED, 0,
      90              :                                                    response_size, response);
      91              :         }
      92              :     }
      93            9 :     session_state = libspdm_secured_message_get_session_state(
      94              :         session_info->secured_message_context);
      95            9 :     if (session_state != LIBSPDM_SESSION_STATE_ESTABLISHED) {
      96            0 :         return libspdm_generate_error_response(spdm_context,
      97              :                                                SPDM_ERROR_CODE_UNEXPECTED_REQUEST, 0,
      98              :                                                response_size, response);
      99              :     }
     100              : 
     101              : 
     102            9 :     if (!libspdm_check_for_space((const uint8_t *)request, end_ptr,
     103              :                                  sizeof(spdm_send_event_request_t))) {
     104            0 :         return libspdm_generate_error_response(
     105              :             spdm_context, SPDM_ERROR_CODE_INVALID_REQUEST, 0, response_size, response);
     106              :     }
     107              : 
     108            9 :     if (spdm_request->event_count == 0) {
     109            1 :         return libspdm_generate_error_response(
     110              :             spdm_context, SPDM_ERROR_CODE_INVALID_REQUEST, 0, response_size, response);
     111              :     }
     112              : 
     113            8 :     ptr = (const uint8_t *)(spdm_request + 1);
     114              : 
     115            8 :     event_instance_id_min = UINT32_MAX;
     116            8 :     event_instance_id_max = 0;
     117            8 :     events_list_is_sequential = true;
     118              : 
     119            8 :     calculated_request_size = sizeof(spdm_send_event_request_t);
     120              : 
     121              :     /* Parse and validate all events for size and fields. */
     122           22 :     for (index = 0; index < spdm_request->event_count; index++) {
     123              :         uint32_t event_instance_id;
     124              :         uint8_t svh_id;
     125              :         uint8_t svh_vendor_id_len;
     126              :         uint16_t event_type_id;
     127              :         uint16_t event_detail_len;
     128              : 
     129           15 :         if (!libspdm_check_for_space(ptr, end_ptr,
     130              :                                      sizeof(uint32_t) + sizeof(uint32_t) + sizeof(uint8_t) +
     131              :                                      sizeof(uint8_t))) {
     132            1 :             return libspdm_generate_error_response(
     133              :                 spdm_context, SPDM_ERROR_CODE_INVALID_REQUEST, 0, response_size, response);
     134              :         }
     135              : 
     136           14 :         event_instance_id = libspdm_read_uint32(ptr);
     137              : 
     138           14 :         if ((index != 0) && events_list_is_sequential) {
     139            6 :             if (event_instance_id != (prev_event_instance_id + 1)) {
     140            2 :                 events_list_is_sequential = false;
     141              :             }
     142              :         }
     143           14 :         if (event_instance_id < event_instance_id_min) {
     144            9 :             event_instance_id_min = event_instance_id;
     145              :         }
     146           14 :         if (event_instance_id > event_instance_id_max) {
     147           13 :             event_instance_id_max = event_instance_id;
     148              :         }
     149           14 :         prev_event_instance_id = event_instance_id;
     150              : 
     151           14 :         ptr += sizeof(uint32_t) + sizeof(uint32_t);
     152           14 :         svh_id = *ptr;
     153           14 :         ptr += sizeof(uint8_t);
     154           14 :         svh_vendor_id_len = *ptr;
     155           14 :         ptr += sizeof(uint8_t);
     156              : 
     157           14 :         if (!libspdm_validate_svh_vendor_id_len(svh_id, svh_vendor_id_len)) {
     158            0 :             return libspdm_generate_error_response(
     159              :                 spdm_context, SPDM_ERROR_CODE_INVALID_REQUEST, 0, response_size, response);
     160              :         }
     161              : 
     162           14 :         if (!libspdm_check_for_space(
     163           14 :                 ptr, end_ptr, (size_t)svh_vendor_id_len + sizeof(uint16_t) + sizeof(uint16_t))) {
     164            0 :             return libspdm_generate_error_response(
     165              :                 spdm_context, SPDM_ERROR_CODE_INVALID_REQUEST, 0, response_size, response);
     166              :         }
     167              : 
     168           14 :         ptr += svh_vendor_id_len;
     169              : 
     170           14 :         event_type_id = libspdm_read_uint16(ptr);
     171           14 :         ptr += sizeof(uint16_t);
     172           14 :         event_detail_len = libspdm_read_uint16(ptr);
     173           14 :         ptr += sizeof(uint16_t);
     174              : 
     175           14 :         if (svh_id == SPDM_REGISTRY_ID_DMTF) {
     176           14 :             if (!libspdm_validate_dmtf_event_type(event_type_id, event_detail_len)) {
     177            0 :                 return libspdm_generate_error_response(
     178              :                     spdm_context, SPDM_ERROR_CODE_INVALID_REQUEST, 0, response_size, response);
     179              :             }
     180              :         }
     181              : 
     182           14 :         if (!libspdm_check_for_space(ptr, end_ptr, (size_t)event_detail_len)) {
     183            0 :             return libspdm_generate_error_response(
     184              :                 spdm_context, SPDM_ERROR_CODE_INVALID_REQUEST, 0, response_size, response);
     185              :         }
     186              : 
     187           14 :         ptr += event_detail_len;
     188           14 :         calculated_request_size += sizeof(uint32_t) + sizeof(uint32_t) + sizeof(uint8_t) +
     189           14 :                                    sizeof(uint8_t) + (size_t)svh_vendor_id_len + sizeof(uint16_t) +
     190           14 :                                    sizeof(uint16_t) + (size_t)event_detail_len;
     191              :     }
     192              : 
     193              :     /* Event must be sent in a secure session so message size can be calculated exactly. */
     194            7 :     if (request_size != calculated_request_size) {
     195            1 :         return libspdm_generate_error_response(
     196              :             spdm_context, SPDM_ERROR_CODE_INVALID_REQUEST, 0, response_size, response);
     197              :     }
     198              : 
     199              :     /* If event instance IDs are not sequential then ensure there are no gaps or duplicates before
     200              :      * sending individual events to Integrator. */
     201            6 :     if (!events_list_is_sequential) {
     202            2 :         const void *event_data = spdm_request + 1;
     203              : 
     204            2 :         if ((event_instance_id_max - event_instance_id_min + 1) != spdm_request->event_count) {
     205            1 :             return libspdm_generate_error_response(
     206              :                 spdm_context, SPDM_ERROR_CODE_INVALID_REQUEST, 0, response_size, response);
     207              :         }
     208              : 
     209            3 :         for (index = 0; index < spdm_request->event_count; index++) {
     210            2 :             if (libspdm_find_event_instance_id(event_data, spdm_request->event_count,
     211            2 :                                                event_instance_id_min + (uint32_t)index) == NULL) {
     212            0 :                 return libspdm_generate_error_response(
     213              :                     spdm_context, SPDM_ERROR_CODE_INVALID_REQUEST, 0, response_size, response);
     214              :             }
     215              :         }
     216              :     }
     217              : 
     218            5 :     if (spdm_context->process_event != NULL) {
     219            5 :         const void *next_event_data = spdm_request + 1;
     220              : 
     221           14 :         for (index = 0; index < spdm_request->event_count; index++) {
     222           10 :             if (events_list_is_sequential) {
     223            8 :                 if (!libspdm_parse_and_send_event(
     224              :                         spdm_context, session_id, next_event_data, &next_event_data)) {
     225            1 :                     return libspdm_generate_error_response(
     226              :                         spdm_context, SPDM_ERROR_CODE_INVALID_REQUEST, 0, response_size, response);
     227              :                 }
     228              :             } else {
     229              :                 const void *event_data;
     230              : 
     231            2 :                 event_data = libspdm_find_event_instance_id(
     232            2 :                     (const void *)next_event_data, spdm_request->event_count,
     233            2 :                     event_instance_id_min + (uint32_t)index);
     234            2 :                 if (event_data == NULL) {
     235            0 :                     return libspdm_generate_error_response(
     236              :                         spdm_context, SPDM_ERROR_CODE_INVALID_REQUEST, 0, response_size, response);
     237              :                 }
     238              : 
     239            2 :                 if (!libspdm_parse_and_send_event(spdm_context, session_id, event_data, NULL)) {
     240            0 :                     return libspdm_generate_error_response(
     241              :                         spdm_context, SPDM_ERROR_CODE_INVALID_REQUEST, 0, response_size, response);
     242              :                 }
     243              :             }
     244              :         }
     245              :     }
     246              : 
     247            4 :     spdm_response = (spdm_event_ack_response_t *)response;
     248              : 
     249            4 :     spdm_response->header.spdm_version = libspdm_get_connection_version(spdm_context);
     250            4 :     spdm_response->header.request_response_code = SPDM_EVENT_ACK;
     251            4 :     spdm_response->header.param1 = 0;
     252            4 :     spdm_response->header.param2 = 0;
     253              : 
     254            4 :     *response_size = sizeof(spdm_event_ack_response_t);
     255              : 
     256            4 :     return LIBSPDM_STATUS_SUCCESS;
     257              : }
     258              : 
     259              : #endif /* LIBSPDM_EVENT_RECIPIENT_SUPPORT */
        

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