crypto/openssl-0.9.7d/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 "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
  67 int ASN1_i2d_fp(int (*i2d)(), FILE *out, unsigned char *x)
  68         {
  69         BIO *b;
  70         int ret;
  71
  72         if ((b=BIO_new(BIO_s_file())) == NULL)
  73                 {
  74                 ASN1err(ASN1_F_ASN1_I2D_FP,ERR_R_BUF_LIB);
  75                 return(0);
  76                 }
  77         BIO_set_fp(b,out,BIO_NOCLOSE);
  78         ret=ASN1_i2d_bio(i2d,b,x);
  79         BIO_free(b);
  80         return(ret);
  81         }
  82 #endif
  83
  84 int ASN1_i2d_bio(int (*i2d)(), BIO *out, unsigned char *x)
  85         {
  86         char *b;
  87         unsigned char *p;
  88         int i,j=0,n,ret=1;
  89
  90         n=i2d(x,NULL);
  91         b=(char *)OPENSSL_malloc(n);
  92         if (b == NULL)
  93                 {
  94                 ASN1err(ASN1_F_ASN1_I2D_BIO,ERR_R_MALLOC_FAILURE);
  95                 return(0);
  96                 }
  97
  98         p=(unsigned char *)b;
  99         i2d(x,&p);
 100
 101         for (;;)
 102                 {
 103                 i=BIO_write(out,&(b[j]),n);
 104                 if (i == n) break;
 105                 if (i <= 0)
 106                         {
 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
 120 int 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                 {
 127                 ASN1err(ASN1_F_ASN1_I2D_FP,ERR_R_BUF_LIB);
 128                 return(0);
 129                 }
 130         BIO_set_fp(b,out,BIO_NOCLOSE);
 131         ret=ASN1_item_i2d_bio(it,b,x);
 132         BIO_free(b);
 133         return(ret);
 134         }
 135 #endif
 136
 137 int ASN1_item_i2d_bio(const ASN1_ITEM *it, BIO *out, void *x)
 138         {
 139         unsigned char *b = NULL;
 140         int i,j=0,n,ret=1;
 141
 142         n = ASN1_item_i2d(x, &b, it);
 143         if (b == NULL)
 144                 {
 145                 ASN1err(ASN1_F_ASN1_I2D_BIO,ERR_R_MALLOC_FAILURE);
 146                 return(0);
 147                 }
 148
 149         for (;;)
 150                 {
 151                 i=BIO_write(out,&(b[j]),n);
 152                 if (i == n) break;
 153                 if (i <= 0)
 154                         {
 155                         ret=0;
 156                         break;
 157                         }
 158                 j+=i;
 159                 n-=i;
 160                 }
 161         OPENSSL_free(b);
 162         return(ret);
 163         }