a_i2d_fp.c revision 326663 
1/* crypto/asn1/a_i2d_fp.c */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to.  The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 *    notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 *    notice, this list of conditions and the following disclaimer in the
30 *    documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 *    must display the following acknowledgement:
33 *    "This product includes cryptographic software written by
34 *     Eric Young (eay@cryptsoft.com)"
35 *    The word 'cryptographic' can be left out if the rouines from the library
36 *    being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 *    the apps directory (application code) you must include an acknowledgement:
39 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed.  i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
58
59#include <stdio.h>
60#include "cryptlib.h"
61#include <openssl/buffer.h>
62#include <openssl/asn1.h>
63
64#ifndef NO_OLD_ASN1
65
66# ifndef OPENSSL_NO_FP_API
67int ASN1_i2d_fp(i2d_of_void *i2d, FILE *out, void *x)
68{
69    BIO *b;
70    int ret;
71
72    if ((b = BIO_new(BIO_s_file())) == NULL) {
73        ASN1err(ASN1_F_ASN1_I2D_FP, ERR_R_BUF_LIB);
74        return (0);
75    }
76    BIO_set_fp(b, out, BIO_NOCLOSE);
77    ret = ASN1_i2d_bio(i2d, b, x);
78    BIO_free(b);
79    return (ret);
80}
81# endif
82
83int ASN1_i2d_bio(i2d_of_void *i2d, BIO *out, unsigned char *x)
84{
85    char *b;
86    unsigned char *p;
87    int i, j = 0, n, ret = 1;
88
89    n = i2d(x, NULL);
90    if (n <= 0)
91        return 0;
92
93    b = (char *)OPENSSL_malloc(n);
94    if (b == NULL) {
95        ASN1err(ASN1_F_ASN1_I2D_BIO, ERR_R_MALLOC_FAILURE);
96        return (0);
97    }
98
99    p = (unsigned char *)b;
100    i2d(x, &p);
101
102    for (;;) {
103        i = BIO_write(out, &(b[j]), n);
104        if (i == n)
105            break;
106        if (i <= 0) {
107            ret = 0;
108            break;
109        }
110        j += i;
111        n -= i;
112    }
113    OPENSSL_free(b);
114    return (ret);
115}
116
117#endif
118
119#ifndef OPENSSL_NO_FP_API
120int ASN1_item_i2d_fp(const ASN1_ITEM *it, FILE *out, void *x)
121{
122    BIO *b;
123    int ret;
124
125    if ((b = BIO_new(BIO_s_file())) == NULL) {
126        ASN1err(ASN1_F_ASN1_ITEM_I2D_FP, ERR_R_BUF_LIB);
127        return (0);
128    }
129    BIO_set_fp(b, out, BIO_NOCLOSE);
130    ret = ASN1_item_i2d_bio(it, b, x);
131    BIO_free(b);
132    return (ret);
133}
134#endif
135
136int ASN1_item_i2d_bio(const ASN1_ITEM *it, BIO *out, void *x)
137{
138    unsigned char *b = NULL;
139    int i, j = 0, n, ret = 1;
140
141    n = ASN1_item_i2d(x, &b, it);
142    if (b == NULL) {
143        ASN1err(ASN1_F_ASN1_ITEM_I2D_BIO, ERR_R_MALLOC_FAILURE);
144        return (0);
145    }
146
147    for (;;) {
148        i = BIO_write(out, &(b[j]), n);
149        if (i == n)
150            break;
151        if (i <= 0) {
152            ret = 0;
153            break;
154        }
155        j += i;
156        n -= i;
157    }
158    OPENSSL_free(b);
159    return (ret);
160}
161