1 /* crypto/asn1/a_bool.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/asn1t.h>
  62 
  63 int i2d_ASN1_BOOLEAN(int a, unsigned char **pp)
  64         {
  65         int r;
  66         unsigned char *p;
  67 
  68         r=ASN1_object_size(0,1,V_ASN1_BOOLEAN);
  69         if (pp == NULL) return(r);
  70         p= *pp;
  71 
  72         ASN1_put_object(&p,0,1,V_ASN1_BOOLEAN,V_ASN1_UNIVERSAL);
  73         *(p++)= (unsigned char)a;
  74         *pp=p;
  75         return(r);
  76         }
  77 
  78 int d2i_ASN1_BOOLEAN(int *a, const unsigned char **pp, long length)
  79         {
  80         int ret= -1;
  81         const unsigned char *p;
  82         long len;
  83         int inf,tag,xclass;
  84         int i=0;
  85 
  86         p= *pp;
  87         inf=ASN1_get_object(&p,&len,&tag,&xclass,length);
  88         if (inf & 0x80)
  89                 {
  90                 i=ASN1_R_BAD_OBJECT_HEADER;
  91                 goto err;
  92                 }
  93 
  94         if (tag != V_ASN1_BOOLEAN)
  95                 {
  96                 i=ASN1_R_EXPECTING_A_BOOLEAN;
  97                 goto err;
  98                 }
  99 
 100         if (len != 1)
 101                 {
 102                 i=ASN1_R_BOOLEAN_IS_WRONG_LENGTH;
 103                 goto err;
 104                 }
 105         ret= (int)*(p++);
 106         if (a != NULL) (*a)=ret;
 107         *pp=p;
 108         return(ret);
 109 err:
 110         ASN1err(ASN1_F_D2I_ASN1_BOOLEAN,i);
 111         return(ret);
 112         }
 113 
 114