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https://github.com/openssl/openssl.git
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128 lines
2.6 KiB
C
128 lines
2.6 KiB
C
/*
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* Copyright 1995-2024 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <stdio.h>
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#include "internal/cryptlib.h"
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#include <openssl/buffer.h>
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#include <openssl/asn1.h>
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#ifndef NO_OLD_ASN1
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# ifndef OPENSSL_NO_STDIO
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int ASN1_i2d_fp(i2d_of_void *i2d, FILE *out, const void *x)
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{
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BIO *b;
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int ret;
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if ((b = BIO_new(BIO_s_file())) == NULL) {
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ERR_raise(ERR_LIB_ASN1, ERR_R_BUF_LIB);
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return 0;
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}
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BIO_set_fp(b, out, BIO_NOCLOSE);
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ret = ASN1_i2d_bio(i2d, b, x);
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BIO_free(b);
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return ret;
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}
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# endif
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int ASN1_i2d_bio(i2d_of_void *i2d, BIO *out, const void *x)
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{
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char *b;
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unsigned char *p;
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int i, j = 0, n, ret = 1;
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n = i2d(x, NULL);
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if (n <= 0)
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return 0;
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b = OPENSSL_malloc(n);
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if (b == NULL)
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return 0;
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p = (unsigned char *)b;
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i2d(x, &p);
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for (;;) {
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i = BIO_write(out, &(b[j]), n);
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if (i == n)
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break;
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if (i <= 0) {
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ret = 0;
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break;
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}
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j += i;
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n -= i;
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}
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OPENSSL_free(b);
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return ret;
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}
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#endif
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#ifndef OPENSSL_NO_STDIO
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int ASN1_item_i2d_fp(const ASN1_ITEM *it, FILE *out, const void *x)
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{
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BIO *b;
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int ret;
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if ((b = BIO_new(BIO_s_file())) == NULL) {
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ERR_raise(ERR_LIB_ASN1, ERR_R_BUF_LIB);
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return 0;
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}
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BIO_set_fp(b, out, BIO_NOCLOSE);
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ret = ASN1_item_i2d_bio(it, b, x);
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BIO_free(b);
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return ret;
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}
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#endif
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int ASN1_item_i2d_bio(const ASN1_ITEM *it, BIO *out, const void *x)
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{
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unsigned char *b = NULL;
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int i, j = 0, n, ret = 1;
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n = ASN1_item_i2d(x, &b, it);
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if (n < 0 || b == NULL) {
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ERR_raise(ERR_LIB_ASN1, ERR_R_ASN1_LIB);
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return 0;
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}
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for (;;) {
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i = BIO_write(out, &(b[j]), n);
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if (i == n)
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break;
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if (i <= 0) {
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ret = 0;
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break;
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}
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j += i;
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n -= i;
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}
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OPENSSL_free(b);
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return ret;
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}
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BIO *ASN1_item_i2d_mem_bio(const ASN1_ITEM *it, const ASN1_VALUE *val)
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{
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BIO *res;
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if (it == NULL || val == NULL) {
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ERR_raise(ERR_LIB_ASN1, ERR_R_PASSED_NULL_PARAMETER);
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return NULL;
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}
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if ((res = BIO_new(BIO_s_mem())) == NULL)
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return NULL;
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if (ASN1_item_i2d_bio(it, res, val) <= 0) {
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BIO_free(res);
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res = NULL;
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}
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return res;
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}
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