OSX/libsecurityd/lib/xdr_dldb.h

   1 /*
   2  * Copyright (c) 2006,2011-2012,2014 Apple Inc. All Rights Reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23
  24 #ifndef _XDR_DLDB_H
  25 #define _XDR_DLDB_H
  26
  27 #include "sec_xdr.h"
  28 #include "xdr_cssm.h"
  29
  30 #include <security_cdsa_utilities/cssmdb.h>
  31
  32 bool_t xdr_DLDbFlatIdentifier(XDR *xdrs, DataWalkers::DLDbFlatIdentifier *objp);
  33 bool_t xdr_DLDbFlatIdentifierRef(XDR *xdrs, DataWalkers::DLDbFlatIdentifier **objp);
  34
  35 class CopyIn {
  36     public:
  37         CopyIn(const void *data, xdrproc_t proc) : mLength(0), mData(0) {
  38             if (data && !::copyin(static_cast<uint8_t*>(const_cast<void *>(data)), proc, &mData, &mLength))
  39                 CssmError::throwMe(CSSM_ERRCODE_MEMORY_ERROR);
  40         }
  41         ~CopyIn() { if (mData) free(mData);     }
  42         u_int length() { return mLength; }
  43         void *data() { return mData; }
  44     protected:
  45         u_int mLength;
  46         void *mData;
  47 };
  48
  49 // split out CSSM_DATA variant
  50 class CopyOut {
  51     public:
  52                 // CSSM_DATA can be output only if empty, but also specify preallocated memory to use
  53         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) {
  54             if (copy && size && !::copyout(copy, (u_int)size, proc, mInOutData ? reinterpret_cast<void**>(&mInOutData) : &mData, &mLength)) {
  55                 if (mInOutData && mInOutData->Length) // DataOut behaviour: error back to user if likely related to amount of space passed in
  56                     CssmError::throwMe(CSSMERR_CSP_OUTPUT_LENGTH_ERROR);
  57                 else
  58                     CssmError::throwMe(CSSM_ERRCODE_MEMORY_ERROR);
  59             }
  60         }
  61         ~CopyOut();
  62         u_int length() { return mLength; }
  63         void* data() { return mData; }
  64         void* get() { void *tmp = mData; mData = NULL; return tmp; }
  65     protected:
  66         u_int mLength;
  67         void *mData;
  68                 CSSM_DATA *mInOutData;
  69                 bool mDealloc;
  70                 void *mSource;
  71                 size_t mSourceLen;
  72 };
  73
  74 #endif /* !_XDR_AUTH_H */