SecuritySNACCRuntime/c++-examples/simple/example.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 // c++_examples/simple/example.C - an example of how to use  C++ ASN.1-BER
  20 //             encoders and decoders generated by snacc
  21 //
  22 // AUTHOR: Mike Sample
  23 // DATE:   Aug 92
  24 //
  25 // $Header: /cvs/Darwin/src/live/Security/SecuritySNACCRuntime/c++-examples/simple/example.C,v 1.1.1.1 2001/05/18 23:14:05 mb Exp $
  26 // $Log: example.C,v $
  27 // Revision 1.1.1.1  2001/05/18 23:14:05  mb
  28 // Move from private repository to open source repository
  29 //
  30 // Revision 1.2  2001/05/05 00:59:17  rmurphy
  31 // Adding darwin license headers
  32 //
  33 // Revision 1.1.1.1  1999/03/16 18:05:57  aram
  34 // Originals from SMIME Free Library.
  35 //
  36 // Revision 1.5  1995/07/24 15:36:03  rj
  37 // check return value of new.
  38 //
  39 // changed `_' to `-' in file names.
  40 //
  41 // Revision 1.4  1995/02/18  13:54:18  rj
  42 // added #define HAVE_VARIABLE_SIZED_AUTOMATIC_ARRAYS since not every C++ compiler provides them.
  43 //
  44 // Revision 1.3  1994/10/08  01:27:02  rj
  45 // several \size_t'
  46 //
  47 // Revision 1.2  1994/08/31  08:56:32  rj
  48 // first check-in. for a list of changes to the snacc-1.1 distribution please refer to the ChangeLog.
  49 //
  50
  51 #include <stddef.h>
  52 #include <stdlib.h>
  53 #include <errno.h>
  54 #include <fstream.h>
  55 #include "asn-incl.h"
  56 #include "p-rec.h"
  57
  58
  59 main (int argc, char *argv[])
  60 {
  61     AsnBuf  inputBuf;
  62     AsnBuf  outputBuf;
  63     size_t encodedLen;
  64     size_t decodedLen;
  65     size_t      dataSize;
  66     ifstream dataFile;
  67     PersonnelRecord pr;
  68
  69     if (argc != 2)
  70     {
  71         cerr << "Usage: " << argv[0] << " <BER data file name>" << endl;
  72         cerr << "   Decodes the given PersonnelRecord BER data file" << endl;
  73         cerr << "   and re-encodes it to stdout" << endl;
  74         exit (1);
  75     }
  76
  77
  78     // open the data file
  79     dataFile.open (argv[1]);
  80
  81     if (!dataFile)
  82     {
  83         perror ("ifstream::open");
  84         exit (1);
  85     }
  86
  87     // get size of the data file file
  88     dataFile.seekg (0, ios::end);
  89     dataSize = dataFile.tellg();
  90     dataFile.seekg (0);
  91
  92     // read data from file into contiguous block for a buffer
  93 #if HAVE_VARIABLE_SIZED_AUTOMATIC_ARRAYS
  94     char data[dataSize];
  95 #else
  96     char *data = new char[dataSize];
  97     if (!data)
  98         return 1;
  99 #endif /* HAVE_VARIABLE_SIZED_AUTOMATIC_ARRAYS */
 100     dataFile.read (data, dataSize);
 101     dataFile.close();
 102
 103     //
 104     // put the BER data read from the file
 105     // into buffer format, ready for reading from the
 106     // beginning
 107     //
 108     inputBuf.InstallData (data, dataSize);
 109
 110     if (!pr.BDecPdu (inputBuf, decodedLen))
 111     {
 112         cerr << "--- ERROR - Decode routines failed, exiting..." << endl;
 113         exit (1);
 114     }
 115
 116     cerr  << "decodedValue PersonnelRecord ::= " << pr << endl << endl;
 117
 118     //
 119     // allocate a new buffer set up for writing to
 120     //
 121 #if HAVE_VARIABLE_SIZED_AUTOMATIC_ARRAYS
 122     char outputData[dataSize + 512];
 123 #else
 124     char *outputData = new char[dataSize + 512];
 125     if (!outputData)
 126         return 1;
 127 #endif /* HAVE_VARIABLE_SIZED_AUTOMATIC_ARRAYS */
 128     outputBuf.Init (outputData, dataSize+512);
 129     outputBuf.ResetInWriteRvsMode();
 130
 131     if (!pr.BEncPdu (outputBuf, encodedLen))
 132     {
 133         cerr << "--- ERROR - Encode routines failed" << endl;
 134     }
 135
 136     // write the BER value to cout
 137     outputBuf.ResetInReadMode();
 138     for (; encodedLen > 0; encodedLen--)
 139         cout.put (outputBuf.GetByte());
 140
 141     return 0;
 142 }