Security-54.1.3.tar.gz

[apple/security.git] / SecureTransport / sslMemory.cpp

diff --git a/SecureTransport/sslMemory.cpp b/SecureTransport/sslMemory.cpp
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+++ b/SecureTransport/sslMemory.cpp
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+/*
+ * Copyright (c) 2000-2001 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.
+ */
+
+
+/*
+       File:           sslMemory.c
+
+       Contains:       memory allocator implementation
+
+       Written by:     Doug Mitchell
+
+       Copyright: (c) 1999 by Apple Computer, Inc., all rights reserved.
+
+*/
+
+#include "sslMemory.h"
+#include "sslContext.h"
+#include "sslDebug.h"
+
+#include <CoreServices/../Frameworks/CarbonCore.framework/Headers/MacErrors.h>
+
+#pragma mark *** Basic low-level malloc/free ***
+
+/*
+ * For now, all allocs/frees go thru here. 
+ */
+#include <string.h>                    /* memset */
+#include <stdlib.h>
+
+void *
+sslMalloc(UInt32 length)
+{   
+       return malloc(length);
+}
+
+void
+sslFree(void *p)
+{   
+       if(p != nil) {
+               free(p);
+       }
+}
+
+void *
+sslRealloc(void *oldPtr, UInt32 oldLen, UInt32 newLen)
+{   
+       return realloc(oldPtr, newLen);
+}
+
+#pragma mark *** SSLBuffer-level alloc/free ***
+
+OSStatus SSLAllocBuffer(
+       SSLBuffer &buf, 
+       UInt32 length, 
+       const SSLContext *ctx)                  // currently unused
+{   
+       buf.data = (UInt8 *)sslMalloc(length);
+       if(buf.data == NULL) {
+               buf.length = 0;
+               return memFullErr;
+       }
+    buf.length = length;
+    return noErr;
+}
+
+OSStatus
+SSLFreeBuffer(SSLBuffer &buf, const SSLContext *ctx)
+{   
+       if(&buf == NULL) {
+               sslErrorLog("SSLFreeBuffer: NULL buf!\n");
+               return errSSLInternal;
+       }
+    sslFree(buf.data);
+    buf.data = NULL;
+    buf.length = 0;
+    return noErr;
+}
+
+OSStatus
+SSLReallocBuffer(SSLBuffer &buf, UInt32 newSize, const SSLContext *ctx)
+{   
+       buf.data = (UInt8 *)sslRealloc(buf.data, buf.length, newSize);
+       if(buf.data == NULL) {
+               buf.length = 0;
+               return memFullErr;
+       }
+       buf.length = newSize;
+       return noErr;
+}
+
+#pragma mark *** Convenience routines ***
+
+UInt8 *sslAllocCopy(
+       const UInt8 *src,
+       UInt32 len)
+{
+       UInt8 *dst;
+       
+       dst = (UInt8 *)sslMalloc(len);
+       if(dst == NULL) {
+               return NULL;
+       } 
+       memmove(dst, src, len);
+       return dst;
+} 
+
+OSStatus SSLAllocCopyBuffer(
+       const SSLBuffer &src, 
+       SSLBuffer **dst)                // buffer and data mallocd and returned 
+{   
+       OSStatus serr;
+       
+       SSLBuffer *rtn = (SSLBuffer *)sslMalloc(sizeof(SSLBuffer));
+       if(rtn == NULL) {
+               return memFullErr;
+       }
+       serr = SSLCopyBuffer(src, *rtn);
+       if(serr) {
+               sslFree(rtn);
+       }
+       else {
+               *dst = rtn;
+       }
+       return serr;
+}
+
+OSStatus SSLCopyBuffer(
+       const SSLBuffer &src, 
+       SSLBuffer &dst)         // data mallocd and returned 
+{   
+       dst.data = sslAllocCopy(src.data, src.length);
+       if(dst.data == NULL) {
+               return memFullErr;
+       }
+    dst.length = src.length;
+    return noErr;
+}