crypto/asn1/a_i2d_fp.c

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