SecuritySNACCRuntime/c-lib/inc/asn-len.h

   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_len.h
  21  *
  22  * Warning: many of these routines are MACROs for performance reasons
  23  *          - be carful where you use them.  Don't use more than one per
  24  *          assignment statement -
  25  *          (eg itemLen += BEncEoc (b) + BEncFoo (b) ..; this
  26  *           will break the code)
  27  *
  28  * MS 92
  29  * Copyright (C) 1992 Michael Sample and the University of British Columbia
  30  *
  31  * This library is free software; you can redistribute it and/or
  32  * modify it provided that this copyright/license information is retained
  33  * in original form.
  34  *
  35  * If you modify this file, you must clearly indicate your changes.
  36  *
  37  * This source code is distributed in the hope that it will be
  38  * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
  39  * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  40  *
  41  * $Header: /cvs/root/Security/SecuritySNACCRuntime/c-lib/inc/Attic/asn-len.h,v 1.1.1.1 2001/05/18 23:14:08 mb Exp $
  42  * $Log: asn-len.h,v $
  43  * Revision 1.1.1.1  2001/05/18 23:14:08  mb
  44  * Move from private repository to open source repository
  45  *
  46  * Revision 1.2  2001/05/05 00:59:22  rmurphy
  47  * Adding darwin license headers
  48  *
  49  * Revision 1.1.1.1  1999/03/16 18:06:20  aram
  50  * Originals from SMIME Free Library.
  51  *
  52  * Revision 1.2  1995/07/27 08:42:40  rj
  53  * cpp macro TBL changed to TTBL since some type table code uses TBL as a type name.
  54  *
  55  * changed `_' to `-' in file names.
  56  *
  57  * Revision 1.1  1994/08/28  09:21:29  rj
  58  * first check-in. for a list of changes to the snacc-1.1 distribution please refer to the ChangeLog.
  59  *
  60  */
  61
  62 #ifndef _asn_len_h_
  63 #define _asn_len_h_
  64
  65 typedef unsigned long int AsnLen;
  66
  67 /* max unsigned value  - used for internal rep of indef len */
  68 #define INDEFINITE_LEN          ~0L
  69
  70
  71 #ifdef USE_INDEF_LEN
  72
  73 #define BEncEocIfNec( b)        BEncEoc (b)
  74
  75 /*
  76  * include len for EOC  (2 must be first due to BEncIndefLen
  77  * - ack! ugly macros!)
  78  */
  79 #define BEncConsLen( b, len)    2 + BEncIndefLen(b)
  80
  81
  82 #else  /* use definite length - faster?/smaller encodings */
  83
  84
  85 /* do nothing since only using definite lens */
  86 #define BEncEocIfNec( b)
  87
  88 #define BEncConsLen( b, len)    BEncDefLen(b, len)
  89
  90
  91 #endif
  92
  93
  94
  95 /*
  96  * writes indefinite length byte to buffer. 'returns' encoded len (1)
  97  */
  98 #define BEncIndefLen( b)\
  99     1;\
 100     BufPutByteRvs (b, 0x80);
 101
 102
 103 #define BEncEoc( b)\
 104     2;\
 105     BufPutByteRvs (b, 0);\
 106     BufPutByteRvs (b, 0);
 107
 108
 109 /*
 110  * use if you know the encoded length will be 0 >= len <= 127
 111  * Eg for booleans, nulls, any resonable integers and reals
 112  *
 113  * NOTE: this particular Encode Routine does NOT return the length
 114  * encoded (1).
 115  */
 116 #define BEncDefLenTo127( b, len)\
 117     BufPutByteRvs (b, (unsigned char) len)
 118
 119 #define BDEC_2ND_EOC_OCTET( b, bytesDecoded, env)\
 120 {\
 121     if ((BufGetByte (b) != 0) || BufReadError (b)) {\
 122         Asn1Error ("ERROR - second octet of EOC not zero\n");\
 123         longjmp (env, -28);}\
 124      (*bytesDecoded)++;\
 125 }
 126
 127
 128 AsnLen BEncDefLen PROTO ((BUF_TYPE  b, AsnLen len));
 129
 130 AsnLen BDecLen PROTO ((BUF_TYPE b, AsnLen  *bytesDecoded, ENV_TYPE env));
 131
 132 /*
 133 AsnLen BEncEoc PROTO ((BUF_TYPE b));
 134 */
 135 void BDecEoc PROTO ((BUF_TYPE b, AsnLen *bytesDecoded, ENV_TYPE env));
 136
 137 #if TTBL
 138 int PeekEoc PROTO ((BUF_TYPE b));
 139 #endif
 140
 141 #endif /* conditional include */