1/*
2 * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10#include <stdio.h>
11#include "internal/cryptlib.h"
12#include <openssl/buffer.h>
13#include <openssl/asn1.h>
14
15#ifndef NO_OLD_ASN1
16
17# ifndef OPENSSL_NO_STDIO
18int ASN1_i2d_fp(i2d_of_void *i2d, FILE *out, const void *x)
19{
20 BIO *b;
21 int ret;
22
23 if ((b = BIO_new(BIO_s_file())) == NULL) {
24 ASN1err(ASN1_F_ASN1_I2D_FP, ERR_R_BUF_LIB);
25 return 0;
26 }
27 BIO_set_fp(b, out, BIO_NOCLOSE);
28 ret = ASN1_i2d_bio(i2d, b, x);
29 BIO_free(b);
30 return ret;
31}
32# endif
33
34int ASN1_i2d_bio(i2d_of_void *i2d, BIO *out, const void *x)
35{
36 char *b;
37 unsigned char *p;
38 int i, j = 0, n, ret = 1;
39
40 n = i2d(x, NULL);
41 if (n <= 0)
42 return 0;
43
44 b = OPENSSL_malloc(n);
45 if (b == NULL) {
46 ASN1err(ASN1_F_ASN1_I2D_BIO, ERR_R_MALLOC_FAILURE);
47 return 0;
48 }
49
50 p = (unsigned char *)b;
51 i2d(x, &p);
52
53 for (;;) {
54 i = BIO_write(out, &(b[j]), n);
55 if (i == n)
56 break;
57 if (i <= 0) {
58 ret = 0;
59 break;
60 }
61 j += i;
62 n -= i;
63 }
64 OPENSSL_free(b);
65 return ret;
66}
67
68#endif
69
70#ifndef OPENSSL_NO_STDIO
71int ASN1_item_i2d_fp(const ASN1_ITEM *it, FILE *out, const void *x)
72{
73 BIO *b;
74 int ret;
75
76 if ((b = BIO_new(BIO_s_file())) == NULL) {
77 ASN1err(ASN1_F_ASN1_ITEM_I2D_FP, ERR_R_BUF_LIB);
78 return 0;
79 }
80 BIO_set_fp(b, out, BIO_NOCLOSE);
81 ret = ASN1_item_i2d_bio(it, b, x);
82 BIO_free(b);
83 return ret;
84}
85#endif
86
87int ASN1_item_i2d_bio(const ASN1_ITEM *it, BIO *out, const void *x)
88{
89 unsigned char *b = NULL;
90 int i, j = 0, n, ret = 1;
91
92 n = ASN1_item_i2d(x, &b, it);
93 if (b == NULL) {
94 ASN1err(ASN1_F_ASN1_ITEM_I2D_BIO, ERR_R_MALLOC_FAILURE);
95 return 0;
96 }
97
98 for (;;) {
99 i = BIO_write(out, &(b[j]), n);
100 if (i == n)
101 break;
102 if (i <= 0) {
103 ret = 0;
104 break;
105 }
106 j += i;
107 n -= i;
108 }
109 OPENSSL_free(b);
110 return ret;
111}
112