Viewing file:  a_i2d_fp.c (2.62 KB) -rw-r--r--
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/*
* Copyright 1995-2021 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
*/
#include <stdio.h>
#include "internal/cryptlib.h"
#include <openssl/buffer.h>
#include <openssl/asn1.h>
#ifndef NO_OLD_ASN1
# ifndef OPENSSL_NO_STDIO
int ASN1_i2d_fp(i2d_of_void *i2d, FILE *out, const void *x)
{
BIO *b;
int ret;
if ((b = BIO_new(BIO_s_file())) == NULL) {
ERR_raise(ERR_LIB_ASN1, ERR_R_BUF_LIB);
return 0;
}
BIO_set_fp(b, out, BIO_NOCLOSE);
ret = ASN1_i2d_bio(i2d, b, x);
BIO_free(b);
return ret;
}
# endif
int ASN1_i2d_bio(i2d_of_void *i2d, BIO *out, const void *x)
{
char *b;
unsigned char *p;
int i, j = 0, n, ret = 1;
n = i2d(x, NULL);
if (n <= 0)
return 0;
b = OPENSSL_malloc(n);
if (b == NULL) {
ERR_raise(ERR_LIB_ASN1, ERR_R_MALLOC_FAILURE);
return 0;
}
p = (unsigned char *)b;
i2d(x, &p);
for (;;) {
i = BIO_write(out, &(b[j]), n);
if (i == n)
break;
if (i <= 0) {
ret = 0;
break;
}
j += i;
n -= i;
}
OPENSSL_free(b);
return ret;
}
#endif
#ifndef OPENSSL_NO_STDIO
int ASN1_item_i2d_fp(const ASN1_ITEM *it, FILE *out, const void *x)
{
BIO *b;
int ret;
if ((b = BIO_new(BIO_s_file())) == NULL) {
ERR_raise(ERR_LIB_ASN1, ERR_R_BUF_LIB);
return 0;
}
BIO_set_fp(b, out, BIO_NOCLOSE);
ret = ASN1_item_i2d_bio(it, b, x);
BIO_free(b);
return ret;
}
#endif
int ASN1_item_i2d_bio(const ASN1_ITEM *it, BIO *out, const void *x)
{
unsigned char *b = NULL;
int i, j = 0, n, ret = 1;
n = ASN1_item_i2d(x, &b, it);
if (b == NULL) {
ERR_raise(ERR_LIB_ASN1, ERR_R_MALLOC_FAILURE);
return 0;
}
for (;;) {
i = BIO_write(out, &(b[j]), n);
if (i == n)
break;
if (i <= 0) {
ret = 0;
break;
}
j += i;
n -= i;
}
OPENSSL_free(b);
return ret;
}
BIO *ASN1_item_i2d_mem_bio(const ASN1_ITEM *it, const ASN1_VALUE *val)
{
BIO *res;
if (it == NULL || val == NULL) {
ERR_raise(ERR_LIB_ASN1, ERR_R_PASSED_NULL_PARAMETER);
return NULL;
}
if ((res = BIO_new(BIO_s_mem())) == NULL)
return NULL;
if (ASN1_item_i2d_bio(it, res, val) <= 0) {
BIO_free(res);
res = NULL;
}
return res;
}
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