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Member "openssl-1.0.2q/crypto/asn1/a_bool.c" (20 Nov 2018, 4635 Bytes) of package /linux/misc/openssl-1.0.2q.tar.gz:


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    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, *allocated = NULL;
   67 
   68     r = ASN1_object_size(0, 1, V_ASN1_BOOLEAN);
   69     if (pp == NULL)
   70         return (r);
   71 
   72     if (*pp == NULL) {
   73         if ((p = allocated = OPENSSL_malloc(r)) == NULL) {
   74             ASN1err(ASN1_F_I2D_ASN1_BOOLEAN, ERR_R_MALLOC_FAILURE);
   75             return 0;
   76         }
   77     } else {
   78         p = *pp;
   79     }
   80 
   81     ASN1_put_object(&p, 0, 1, V_ASN1_BOOLEAN, V_ASN1_UNIVERSAL);
   82     *p = (unsigned char)a;
   83 
   84 
   85     /*
   86      * If a new buffer was allocated, just return it back.
   87      * If not, return the incremented buffer pointer.
   88      */
   89     *pp = allocated != NULL ? allocated : p + 1;
   90     return r;
   91 }
   92 
   93 int d2i_ASN1_BOOLEAN(int *a, const unsigned char **pp, long length)
   94 {
   95     int ret = -1;
   96     const unsigned char *p;
   97     long len;
   98     int inf, tag, xclass;
   99     int i = 0;
  100 
  101     p = *pp;
  102     inf = ASN1_get_object(&p, &len, &tag, &xclass, length);
  103     if (inf & 0x80) {
  104         i = ASN1_R_BAD_OBJECT_HEADER;
  105         goto err;
  106     }
  107 
  108     if (tag != V_ASN1_BOOLEAN) {
  109         i = ASN1_R_EXPECTING_A_BOOLEAN;
  110         goto err;
  111     }
  112 
  113     if (len != 1) {
  114         i = ASN1_R_BOOLEAN_IS_WRONG_LENGTH;
  115         goto err;
  116     }
  117     ret = (int)*(p++);
  118     if (a != NULL)
  119         (*a) = ret;
  120     *pp = p;
  121     return (ret);
  122  err:
  123     ASN1err(ASN1_F_D2I_ASN1_BOOLEAN, i);
  124     return (ret);
  125 }