OW_CIMBase.cpp

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#include "OW_config.h"
#include "OW_CIMBase.hpp"
#include "OW_Format.hpp"
#include "OW_Assertion.hpp"
#include "OW_StringStream.hpp"
#include "OW_IOException.hpp"
#include "OW_BinarySerialization.hpp"
#include <cstring>

namespace OW_NAMESPACE
{

using std::istream;
using std::ostream;
// static
void
CIMBase::readSig( istream& istr, const char* const sig )
{
   char expected, read;
   OW_ASSERT( strlen(sig) == 1 );
   expected = sig[0];
   BinarySerialization::read(istr, &read, sizeof(read));
   if (expected != read)
   {
      OW_THROW_ERR(BadCIMSignatureException,
         Format("Signature does not match. In CIMBase::readSig. "
            "signature read: %1, expected: %2",
            read, sig).c_str(), E_UNEXPECTED_SIGNATURE);
   }
}
// static
UInt32
CIMBase::readSig(std::istream& istr, const char* const sig,
   const char* const verSig, UInt32 maxVersion)
{
   UInt32 version = 0;
   char ch;
   OW_ASSERT( strlen(sig) == 1);
   OW_ASSERT( strlen(verSig) == 1);

   BinarySerialization::read(istr, &ch, sizeof(ch));
   if (sig[0] != ch)
   {
      if (verSig[0] != ch)
      {
         OW_THROW_ERR(BadCIMSignatureException,
            Format("Signature does not match. In CIMBase::readSig. "
               "signature read: %1, expected: %2 or %3",
               ch, sig, verSig).c_str(), E_UNEXPECTED_SIGNATURE);
      }

      // Version is ASN.1 length encoded
      BinarySerialization::readLen(istr, version);
      if (version > maxVersion)
      {
         OW_THROW_ERR(BadCIMSignatureException,
            Format("CIMBase::readSig. Unknown version %1, only versions <= %2 are handled.",
            version, maxVersion).c_str(), E_UNKNOWN_VERSION);
      }
   }

   return version;
}

// static
void
CIMBase::writeSig( ostream& ostr, const char* const sig )
{
   OW_ASSERT(strlen(sig) == 1);
   BinarySerialization::write(ostr, sig, 1);
}
// static
void
CIMBase::writeSig(std::ostream& ostr, const char* const sig, UInt32 version)
{
   OW_ASSERT(strlen(sig) == 1);
   BinarySerialization::write(ostr, sig, 1);
   // Use ASN.1 length encoding for version
   BinarySerialization::writeLen(ostr, version);
}

std::ostream& operator<<(std::ostream& ostr, const CIMBase& cb)
{
   ostr << cb.toString();
   return ostr;
}
CIMBase::~CIMBase()
{
}

} // end namespace OW_NAMESPACE

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