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/* SPDX-License-Identifier: BSD-3-Clause */
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "tools/fapi/tss2_template.h"
/* needed to conditionally free variable authValue */
static bool has_asked_for_password = false;
/* Context struct used to store passed commandline parameters */
static struct cxt {
char const *nvPath;
char const *nvTemplate;
char *authValue;
uint32_t size;
char const *policyPath;
} ctx;
/* Parse commandline parameters */
static bool on_option(char key, char *value) {
switch (key) {
case 'a':
ctx.authValue = value;
break;
case 'P':
ctx.policyPath = value;
break;
case 'p':
ctx.nvPath = value;
break;
case 's':
if (!tpm2_util_string_to_uint32 (value, &ctx.size)) {
fprintf (stderr, "%s cannot be converted to an integer or is" \
" larger than 2**32 - 1\n", value);
return false;
}
break;
case 't':
ctx.nvTemplate = value;
break;
}
return true;
}
/* Define possible commandline parameters */
static bool tss2_tool_onstart(tpm2_options **opts) {
struct option topts[] = {
{"path", required_argument, NULL, 'p'},
{"type", required_argument, NULL, 't'},
{"size", required_argument, NULL, 's'},
{"policyPath", required_argument, NULL, 'P'},
{"authValue", required_argument, NULL, 'a'},
};
return (*opts = tpm2_options_new ("P:a:p:s:t:", 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.nvPath) {
fprintf (stderr, "No NV path provided, use --path\n");
return -1;
}
uint32_t size = 0;
if (!ctx.size) {
/* ctx.size is allowed to be zero if type is bitfield, pcr or
* counter
*/
if (!ctx.nvTemplate || !(strstr(ctx.nvTemplate, "bitfield") ||
strstr(ctx.nvTemplate, "pcr") || strstr(ctx.nvTemplate, "counter"))) {
fprintf (stderr, "Error: Either provide a type of \"bitfield\", "\
"pcr\" or \"counter\" with --type or provide a size > 0 with "\
"--size.\n");
return -1;
}
}
else {
size = ctx.size;
}
/* If no authValue was given, prompt the user interactively */
if (!ctx.authValue) {
ctx.authValue = ask_for_password ();
has_asked_for_password = true;
if (!ctx.authValue){
return 1; /* User entered two different passwords */
}
}
/* Execute FAPI command with passed arguments */
TSS2_RC r = Fapi_CreateNv(fctx, ctx.nvPath, ctx.nvTemplate,
size, ctx.policyPath, ctx.authValue);
if (r != TSS2_RC_SUCCESS){
if(has_asked_for_password){
free (ctx.authValue);
}
LOG_PERR ("Fapi_CreateNv", r);
return 1;
}
if(has_asked_for_password){
free (ctx.authValue);
}
return 0;
}
TSS2_TOOL_REGISTER("createnv", tss2_tool_onstart, tss2_tool_onrun, NULL)
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