/*
* Copyright 1999-2020 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
/* X509 v3 extension utilities */
#include "e_os.h"
#include "internal/cryptlib.h"
#include <stdio.h>
#include "crypto/ctype.h"
#include <openssl/conf.h>
#include <openssl/crypto.h>
#include <openssl/x509v3.h>
#include "crypto/x509.h"
#include <openssl/bn.h>
#include "ext_dat.h"
#include "x509_local.h"
static char *strip_spaces(char *name);
static int sk_strcmp(const char *const *a, const char *const *b);
static STACK_OF(OPENSSL_STRING) *get_email(const X509_NAME *name,
GENERAL_NAMES *gens);
static void str_free(OPENSSL_STRING str);
static int append_ia5(STACK_OF(OPENSSL_STRING) **sk,
const ASN1_IA5STRING *email);
static int ipv4_from_asc(unsigned char *v4, const char *in);
static int ipv6_from_asc(unsigned char *v6, const char *in);
static int ipv6_cb(const char *elem, int len, void *usr);
static int ipv6_hex(unsigned char *out, const char *in, int inlen);
/* Add a CONF_VALUE name value pair to stack */
int X509V3_add_value(const char *name, const char *value,
STACK_OF(CONF_VALUE) **extlist)
{
CONF_VALUE *vtmp = NULL;
char *tname = NULL, *tvalue = NULL;
int sk_allocated = (*extlist == NULL);
if (name && (tname = OPENSSL_strdup(name)) == NULL)
goto err;
if (value && (tvalue = OPENSSL_strdup(value)) ==