text: /*
   * Copyright (c) 2006,2011-2012,2014 Apple Inc. All Rights Reserved.
   * 
   * @APPLE_LICENSE_HEADER_START@
   * 
   * This file contains Original Code and/or Modifications of Original Code
   * as defined in and that are subject to the Apple Public Source License
   * Version 2.0 (the 'License'). You may not use this file except in
   * compliance with the License. Please obtain a copy of the License at
   * http://www.opensource.apple.com/apsl/ and read it before using this
   * file.
   * 
   * The Original Code and all software distributed under the License are
   * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
   * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
   * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
   * Please see the License for the specific language governing rights and
   * limitations under the License.
   * 
   * @APPLE_LICENSE_HEADER_END@
   */
  
  #ifndef _XDR_DLDB_H
  #define _XDR_DLDB_H
  
  #include "sec_xdr.h"
  #include "xdr_cssm.h"
  
  #include <security_cdsa_utilities/cssmdb.h>
  
  bool_t xdr_DLDbFlatIdentifier(XDR *xdrs, DataWalkers::DLDbFlatIdentifier *objp);
  bool_t xdr_DLDbFlatIdentifierRef(XDR *xdrs, DataWalkers::DLDbFlatIdentifier **objp);
  
  class CopyIn {
      public:
          CopyIn(const void *data, xdrproc_t proc) : mLength(0), mData(0) {
              if (data && !::copyin(static_cast<uint8_t*>(const_cast<void *>(data)), proc, &mData, &mLength))
                  CssmError::throwMe(CSSM_ERRCODE_MEMORY_ERROR);  
          }
          ~CopyIn() { if (mData) free(mData);     }
          u_int length() { return mLength; }
          void *data() { return mData; }
      protected:
          u_int mLength;
          void *mData;
  };
  
  // split out CSSM_DATA variant
  class CopyOut {
      public:
  		// CSSM_DATA can be output only if empty, but also specify preallocated memory to use
          CopyOut(void *copy, size_t size, xdrproc_t proc, bool dealloc = false, CSSM_DATA *in_out_data = NULL) : mLength(in_out_data?(u_int)in_out_data->Length:0), mData(NULL), mInOutData(in_out_data), mDealloc(dealloc), mSource(copy), mSourceLen(size) {
              if (copy && size && !::copyout(copy, (u_int)size, proc, mInOutData ? reinterpret_cast<void**>(&mInOutData) : &mData, &mLength)) {
                  if (mInOutData && mInOutData->Length) // DataOut behaviour: error back to user if likely related to amount of space passed in
                      CssmError::throwMe(CSSMERR_CSP_OUTPUT_LENGTH_ERROR);
                  else
                      CssmError::throwMe(CSSM_ERRCODE_MEMORY_ERROR);
              }
          }
          ~CopyOut();
          u_int length() { return mLength; } 
          void* data() { return mData; }
          void* get() { void *tmp = mData; mData = NULL; return tmp; }
      protected:
          u_int mLength;
          void *mData;
  		CSSM_DATA *mInOutData;
  		bool mDealloc;
  		void *mSource;
  		size_t mSourceLen;
  };
  
  #endif /* !_XDR_AUTH_H */
  