void get_nsm_description()

in nsm-test/src/main.cc [56:114]
42 lines of code
9 McCabe index (conditional complexity)

void get_nsm_description(int32_t ctx, NsmDescription &description)
{
    char module_str[sizeof(description.module_id) + 1];
    ErrorCode status;

    // Get NSM description.
    status = nsm_get_description(ctx, &description);
    if (status != ERROR_CODE_SUCCESS) {
        fprintf(stderr, "[Error] Request::DescribeNSM got invalid response: %s\n",
            get_status_string(status));
        exit(-1);
    }

    // The NSM must have exactly 32 PCRs.
    if (description.max_pcrs != 32) {
        fprintf(stderr, "[Error] NSM PCR count is %u.\n", description.max_pcrs);
        exit(-1);
    }

    // Convert the NSM module id to a string.
    memset(module_str, 0, sizeof(module_str));
    memcpy(module_str, description.module_id, description.module_id_len);

    // The NSM module id must not be empty.
    if (strlen(module_str) == 0) {
        fprintf(stderr, "[Error] NSM module ID is missing.\n");
        exit(-1);
    }

    // Print the NSM description.
    printf("NSM Description: [major: %u, minor: %u, patch: %u, module_id: %s, "
        "max_pcrs: %u, locked_pcrs: {",
        description.version_major, description.version_minor,
        description.version_patch, module_str, description.max_pcrs);

    // Print the list of locked PCRs.
    if (description.locked_pcrs_len > 0) {
        for (int i = 0; i < description.locked_pcrs_len - 1; ++i)
            printf("%u, ", description.locked_pcrs[i]);
        printf("%u", description.locked_pcrs[description.locked_pcrs_len - 1]);
    }

    // Print the digest type.
    printf("}, digest: ");

    switch (description.digest) {
    case DIGEST_SHA256:
        printf("SHA256].\n");
        break;

    case DIGEST_SHA384:
        printf("SHA384].\n");
        break;

    case DIGEST_SHA512:
        printf("SHA512].\n");
        break;
    }
}