SecuritySNACCRuntime/c++-examples/any/example.C

   1 /*
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   6  * You may not use this file except in compliance with the License. Please obtain
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   8  * using this file.
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  17
  18
  19 // c++_examples/any/example.C - an example of how to use C++ ASN.1-BER
  20 //              for ANY Types
  21 //
  22 // AUTHOR: Mike Sample
  23 // DATE:   92
  24 //
  25 // $Header: /cvs/Darwin/src/live/Security/SecuritySNACCRuntime/c++-examples/any/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 15:33:33  rj
  37 // changed `_' to `-' in file names.
  38 //
  39 // any-test.[hC] becomes any.[hC] due to to snacc's new file name generation scheme.
  40 //
  41 // check return value of new.
  42 //
  43 // Revision 1.4  1995/02/18  13:53:07  rj
  44 // added #define HAVE_VARIABLE_SIZED_AUTOMATIC_ARRAYS since not every C++ compiler provides them.
  45 //
  46 // Revision 1.3  1994/10/08  01:26:21  rj
  47 // several \size_t'
  48 //
  49 // Revision 1.2  1994/08/31  08:56:29  rj
  50 // first check-in. for a list of changes to the snacc-1.1 distribution please refer to the ChangeLog.
  51 //
  52
  53 #include <stddef.h>
  54 #include <stdlib.h>
  55 #include <errno.h>
  56 #include <fstream.h>
  57
  58 #include "asn-incl.h"
  59 #include "any.h"
  60
  61 main (int argc, char *argv[])
  62 {
  63     if (argc != 2)
  64     {
  65         cerr << "Usage: " << argv[0] << " <BER data file name>" << endl;
  66         cerr << "   Decodes the given AnyTestType BER data file" << endl;
  67         cerr << "   and re-encodes it to stdout" << endl;
  68         exit (1);
  69     }
  70
  71     ifstream dataFile;
  72     // open the data file
  73     dataFile.open (argv[1]);
  74
  75     if (!dataFile)
  76     {
  77         perror ("ifstream::open");
  78         exit (1);
  79     }
  80
  81     // get size of the data file file
  82     dataFile.seekg (0, ios::end);
  83     int dataSize = dataFile.tellg();
  84     dataFile.seekg (0);
  85
  86     // read data from file into contiguous block for a buffer
  87 #if HAVE_VARIABLE_SIZED_AUTOMATIC_ARRAYS
  88     char data[dataSize];
  89 #else
  90     char *data = new char[dataSize];
  91     if (!data)
  92         return 1;
  93 #endif /* HAVE_VARIABLE_SIZED_AUTOMATIC_ARRAYS */
  94     dataFile.read (data, dataSize);
  95     dataFile.close();
  96
  97     //
  98     // put the BER data read from the file
  99     // into buffer format, ready for reading from the
 100     // beginning
 101     //
 102     AsnBuf inputBuf;
 103     inputBuf.InstallData ((char*)data, dataSize);
 104
 105     size_t decodedLen;
 106     AnyTestType att;
 107
 108     if (!att.BDecPdu (inputBuf, decodedLen))
 109     {
 110         cerr << "ERROR - Decode routines failed, exiting..." << endl;
 111         exit (1);
 112     }
 113
 114     cerr  << "decodedValue AnyTestType ::= " << att << endl << endl;
 115
 116     //
 117     // allocate a new buffer and set up for writing to
 118     //
 119     AsnBuf  outputBuf;
 120 #if HAVE_VARIABLE_SIZED_AUTOMATIC_ARRAYS
 121     char outputData[dataSize + 512];
 122 #else
 123     char *outputData = new char[dataSize + 512];
 124     if (!outputData)
 125         return 1;
 126 #endif /* HAVE_VARIABLE_SIZED_AUTOMATIC_ARRAYS */
 127     outputBuf.Init (outputData, dataSize+512);
 128     outputBuf.ResetInWriteRvsMode();
 129
 130     size_t encodedLen;
 131     if (!att.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 }