Security-163.tar.gz

[apple/security.git] / SecurityServer / flippers.cpp

diff --git a/SecurityServer/flippers.cpp b/SecurityServer/flippers.cpp
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+/*
+ * Copyright (c) 2003 Apple Computer, Inc. All Rights Reserved.
+ * 
+ * The contents of this file constitute Original Code as defined in and are
+ * subject to the Apple Public Source License Version 1.2 (the 'License').
+ * You may not use this file except in compliance with the License. Please obtain
+ * a copy of the License at http://www.apple.com/publicsource and read it before
+ * using this file.
+ * 
+ * This 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.
+ */
+
+
+//
+// process - track a single client process and its belongings
+//
+#include "flippers.h"
+#include "memutils.h"
+
+using namespace LowLevelMemoryUtilities;
+
+
+namespace Flippers {
+
+
+//
+// Automatically generated flippers
+//
+#include "flip_gen.cpp"
+
+
+//
+// The raw byte reversal flipper
+//
+void flip(void *addr, size_t size)
+{
+       assert(size > 1 && (size % 2 == 0));
+       Byte *word = reinterpret_cast<uint8 *>(addr);
+       for (size_t n = 0; n < size/2; n++) {
+               Byte b = word[n];
+               word[n] = word[size-1-n];
+               word[size-1-n] = b;
+       }
+}
+
+
+//
+// Basic flippers
+//
+void flip(uint32 &obj)         { flip(&obj, sizeof(obj)); }
+void flip(uint16 &obj)         { flip(&obj, sizeof(obj)); }
+void flip(sint32 &obj)         { flip(&obj, sizeof(obj)); }
+void flip(sint16 &obj)         { flip(&obj, sizeof(obj)); }
+
+
+//
+// Flip a context attribute. This is heavily polymorphic.
+//
+void flip(CSSM_CONTEXT_ATTRIBUTE &obj)
+{
+       flip(obj.AttributeType);
+       flip(obj.AttributeLength);
+       switch (obj.AttributeType & CSSM_ATTRIBUTE_TYPE_MASK) {
+       case CSSM_ATTRIBUTE_DATA_UINT32:
+               flip(obj.Attribute.Uint32);
+               break;
+       // all other alternatives are handled by CSSM_CONTEXT_ATTRIBUTE's walker
+       default:
+               break;
+       }
+}
+
+
+}      // end namespace Flippers