crypto/asn1/a_i2d_fp.c

   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 "internal/cryptlib.h"
  61 #include <openssl/buffer.h>
  62 #include <openssl/asn1.h>
  63
  64 #ifndef NO_OLD_ASN1
  65
  66 # ifndef OPENSSL_NO_STDIO
  67 int 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
  83 int 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     b = OPENSSL_malloc(n);
  91     if (b == NULL) {
  92         ASN1err(ASN1_F_ASN1_I2D_BIO, ERR_R_MALLOC_FAILURE);
  93         return (0);
  94     }
  95
  96     p = (unsigned char *)b;
  97     i2d(x, &p);
  98
  99     for (;;) {
 100         i = BIO_write(out, &(b[j]), n);
 101         if (i == n)
 102             break;
 103         if (i <= 0) {
 104             ret = 0;
 105             break;
 106         }
 107         j += i;
 108         n -= i;
 109     }
 110     OPENSSL_free(b);
 111     return (ret);
 112 }
 113
 114 #endif
 115
 116 #ifndef OPENSSL_NO_STDIO
 117 int ASN1_item_i2d_fp(const ASN1_ITEM *it, FILE *out, void *x)
 118 {
 119     BIO *b;
 120     int ret;
 121
 122     if ((b = BIO_new(BIO_s_file())) == NULL) {
 123         ASN1err(ASN1_F_ASN1_ITEM_I2D_FP, ERR_R_BUF_LIB);
 124         return (0);
 125     }
 126     BIO_set_fp(b, out, BIO_NOCLOSE);
 127     ret = ASN1_item_i2d_bio(it, b, x);
 128     BIO_free(b);
 129     return (ret);
 130 }
 131 #endif
 132
 133 int ASN1_item_i2d_bio(const ASN1_ITEM *it, BIO *out, void *x)
 134 {
 135     unsigned char *b = NULL;
 136     int i, j = 0, n, ret = 1;
 137
 138     n = ASN1_item_i2d(x, &b, it);
 139     if (b == NULL) {
 140         ASN1err(ASN1_F_ASN1_ITEM_I2D_BIO, ERR_R_MALLOC_FAILURE);
 141         return (0);
 142     }
 143
 144     for (;;) {
 145         i = BIO_write(out, &(b[j]), n);
 146         if (i == n)
 147             break;
 148         if (i <= 0) {
 149             ret = 0;
 150             break;
 151         }
 152         j += i;
 153         n -= i;
 154     }
 155     OPENSSL_free(b);
 156     return (ret);
 157 }