csu3_am335x/EVSE/GPL/tpm2-tools-5.1/tools/fapi/tss2_getinfo.c

/* SPDX-License-Identifier: BSD-3-Clause */

#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "tools/fapi/tss2_template.h"

/* Context struct used to store passed commandline parameters */
static struct cxt {
    char *info;
    bool  overwrite;
} ctx;

/* Parse commandline parameters */
static bool on_option(char key, char *value) {
    switch (key) {
    case 'f':
        ctx.overwrite = true;
        break;
    case 'o':
        ctx.info = value;
        break;
    }
    return true;
}

/* Define possible commandline parameters */
static bool tss2_tool_onstart(tpm2_options **opts) {
    struct option topts[] = {
        {"force"   , no_argument      , NULL, 'f'},
        /* output file */
        {"info"  , required_argument, NULL, 'o'}
    };
    return (*opts = tpm2_options_new ("fo:", ARRAY_LEN(topts), topts,
                                      on_option, NULL, 0)) != NULL;
}

/* Execute specific tool */
static int tss2_tool_onrun (FAPI_CONTEXT *fctx) {
    /* Check availability of required parameters */
    if (!ctx.info) {
        fprintf (stderr, "info parameter is missing, pass --info\n");
        return -1;
    }

    /* Execute FAPI command with passed arguments */
    char *info;
    TSS2_RC r = Fapi_GetInfo (fctx, &info);
    if (r != TSS2_RC_SUCCESS) {
        LOG_PERR ("Fapi_GetInfo", r);
        return 1;
    }

    /* Write returned data to file(s) */
    r = open_write_and_close (ctx.info, ctx.overwrite, info, strlen(info));
    if (r) {
        Fapi_Free (info);
        return 1;
    }

    Fapi_Free (info);
    return 0;
}

TSS2_TOOL_REGISTER("getinfo", tss2_tool_onstart, tss2_tool_onrun, NULL)