SecuritySNACCRuntime/c-lib/src/asn-null.c

   1 /*
   2  * Copyright (c) 2000-2001 Apple Computer, Inc. All Rights Reserved.
   3  *
   4  * The contents of this file constitute Original Code as defined in and are
   5  * subject to the Apple Public Source License Version 1.2 (the 'License').
   6  * You may not use this file except in compliance with the License. Please obtain
   7  * a copy of the License at http://www.apple.com/publicsource and read it before
   8  * using this file.
   9  *
  10  * This Original Code and all software distributed under the License are
  11  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
  12  * OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, INCLUDING WITHOUT
  13  * LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
  14  * PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. Please see the License for the
  15  * specific language governing rights and limitations under the License.
  16  */
  17
  18
  19 /*
  20  * asn_null.c - BER encode, decode, print and free routines for the
  21  *              ASN.1 NULL type.
  22  *
  23  * MS 92
  24  * Copyright (C) 1992 Michael Sample and the University of British Columbia
  25  *
  26  * This library is free software; you can redistribute it and/or
  27  * modify it provided that this copyright/license information is retained
  28  * in original form.
  29  *
  30  * If you modify this file, you must clearly indicate your changes.
  31  *
  32  * This source code is distributed in the hope that it will be
  33  * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
  34  * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  35  *
  36  * $Header: /cvs/root/Security/SecuritySNACCRuntime/c-lib/src/Attic/asn-null.c,v 1.1.1.1 2001/05/18 23:14:08 mb Exp $
  37  * $Log: asn-null.c,v $
  38  * Revision 1.1.1.1  2001/05/18 23:14:08  mb
  39  * Move from private repository to open source repository
  40  *
  41  * Revision 1.2  2001/05/05 00:59:25  rmurphy
  42  * Adding darwin license headers
  43  *
  44  * Revision 1.1.1.1  1999/03/16 18:06:31  aram
  45  * Originals from SMIME Free Library.
  46  *
  47  * Revision 1.3  1995/07/24 21:04:52  rj
  48  * changed `_' to `-' in file names.
  49  *
  50  * Revision 1.2  1994/09/01  00:06:08  rj
  51  * reduce the risk of unwanted surprises with macro expansion by properly separating the C tokens.
  52  *
  53  * Revision 1.1  1994/08/28  09:45:57  rj
  54  * first check-in. for a list of changes to the snacc-1.1 distribution please refer to the ChangeLog.
  55  *
  56  */
  57
  58 #include "asn-config.h"
  59 #include "asn-len.h"
  60 #include "asn-tag.h"
  61 #include "asn-null.h"
  62
  63
  64 /*
  65  * encodes universal TAG LENGTH and Contents of and ASN.1 NULL
  66  */
  67 AsnLen
  68 BEncAsnNull PARAMS ((b, data),
  69     BUF_TYPE     b _AND_
  70     AsnNull *data)
  71 {
  72     AsnLen len;
  73
  74     len =  BEncAsnNullContent (b, data);
  75     len += BEncDefLen (b, len);
  76     len += BEncTag1 (b, UNIV, PRIM, NULLTYPE_TAG_CODE);
  77     return len;
  78 }  /* BEncAsnNull */
  79
  80
  81 /*
  82  * decodes universal TAG LENGTH and Contents of and ASN.1 NULL
  83  */
  84 void
  85 BDecAsnNull PARAMS ((b, result, bytesDecoded, env),
  86     BUF_TYPE b _AND_
  87     AsnNull *result _AND_
  88     AsnLen *bytesDecoded _AND_
  89     jmp_buf env)
  90 {
  91     AsnTag tag;
  92     AsnLen elmtLen;
  93
  94     if ((tag = BDecTag (b, bytesDecoded, env)) != MAKE_TAG_ID (UNIV, PRIM, NULLTYPE_TAG_CODE))
  95     {
  96          Asn1Error ("BDecAsnNull: ERROR wrong tag on NULL.\n");
  97          longjmp (env, -40);
  98     }
  99
 100     elmtLen = BDecLen (b, bytesDecoded, env);
 101     BDecAsnNullContent (b, tag, elmtLen, result, bytesDecoded, env);
 102
 103 }  /* BDecAsnNull */
 104
 105
 106 void
 107 BDecAsnNullContent PARAMS ((b, tagId, len, result, bytesDecoded, env),
 108     BUF_TYPE b _AND_
 109     AsnTag tagId _AND_
 110     AsnLen len _AND_
 111     AsnNull *result _AND_
 112     AsnLen *bytesDecoded _AND_
 113     jmp_buf env)
 114 {
 115     if (len != 0)
 116     {
 117         Asn1Error ("BDecAsnNullContent: ERROR - NULL type's len must be 0\n");
 118         longjmp (env, -17);
 119     }
 120 }  /* BDecAsnNullContent */
 121
 122 /*
 123  * Prints the NULL value to the given FILE * in Value Notation.
 124  * ignores the indent.
 125  */
 126 void
 127 PrintAsnNull PARAMS ((f,v, indent),
 128     FILE *f _AND_
 129     AsnNull *v _AND_
 130     unsigned short int indent)
 131 {
 132     fprintf (f, "NULL");
 133 }