X-Git-Url: https://git.saurik.com/apple/security.git/blobdiff_plain/72a12576750f52947eb043106ba5c12c0d07decf..b1ab9ed8d0e0f1c3b66d7daa8fd5564444c56195:/libsecurity_ssl/lib/sslMemory.c

diff --git a/libsecurity_ssl/lib/sslMemory.c b/libsecurity_ssl/lib/sslMemory.c
new file mode 100644
index 00000000..e56afbd8
--- /dev/null
+++ b/libsecurity_ssl/lib/sslMemory.c
@@ -0,0 +1,159 @@
+/*
+ * Copyright (c) 1999-2001,2005-2007,2010-2012 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@
+ */
+
+/*
+ * sslMemory.c - Memory allocator implementation
+ */
+
+#include "sslMemory.h"
+#include "sslContext.h"
+#include "sslDebug.h"
+
+#pragma mark -
+#pragma mark Basic low-level malloc/free
+
+/*
+ * For now, all allocs/frees go thru here.
+ */
+#include <string.h>			/* memset */
+#include <stdlib.h>
+
+void *
+sslMalloc(size_t length)
+{
+	return malloc(length);
+}
+
+void
+sslFree(void *p)
+{
+	if(p != nil) {
+		free(p);
+	}
+}
+
+void *
+sslRealloc(void *oldPtr, size_t oldLen, size_t newLen)
+{
+	return realloc(oldPtr, newLen);
+}
+
+#pragma mark -
+#pragma mark SSLBuffer-level alloc/free
+
+OSStatus SSLAllocBuffer(
+	SSLBuffer *buf,
+	size_t 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, size_t 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 -
+#pragma mark Convenience routines
+
+UInt8 *sslAllocCopy(
+	const UInt8 *src,
+	size_t 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 SSLCopyBufferFromData(
+	const void *src,
+	size_t len,
+	SSLBuffer *dst)		// data mallocd and returned
+{
+	dst->data = sslAllocCopy((const UInt8 *)src, len);
+	if(dst->data == NULL) {
+		return memFullErr;
+	}
+    dst->length = len;
+    return noErr;
+}
+
+OSStatus SSLCopyBuffer(
+	const SSLBuffer *src,
+	SSLBuffer *dst)		// data mallocd and returned
+{
+	return SSLCopyBufferFromData(src->data, src->length, dst);
+}
+