diff -r 000000000000 -r 4f2f89ce4247 WebCore/platform/UUID.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/platform/UUID.cpp	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,100 @@
+/*
+* Copyright (C) 2010 Google Inc. All rights reserved.
+*
+* Redistribution and use in source and binary forms, with or without
+* modification, are permitted provided that the following conditions are
+* met:
+*
+*     * Redistributions of source code must retain the above copyright
+* notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#include "UUID.h"
+
+#include "NotImplemented.h"
+
+#if PLATFORM(QT)
+#include <QUuid>
+#endif
+
+#if OS(WINDOWS)
+#include <objbase.h>
+#ifndef ARRAYSIZE
+#define ARRAYSIZE(a)           (sizeof(a) / sizeof((a)[0]))
+#endif
+#elif OS(DARWIN)
+#include <CoreFoundation/CoreFoundation.h>
+#elif OS(LINUX)
+#include <stdio.h>
+#endif
+
+namespace WebCore {
+
+static const char uuidVersionRequired = '4';
+static const int uuidVersionIdentifierIndex = 14;
+
+String createCanonicalUUIDString()
+{
+#if PLATFORM(QT)
+    QUuid uuid = QUuid::createUuid();
+    String canonicalUuidStr = uuid.toString().mid(1, 36).toLower(); // remove opening and closing bracket and make it lower.
+    ASSERT(canonicalUuidStr[uuidVersionIdentifierIndex] == uuidVersionRequired);
+    return canonicalUuidStr;
+#elif OS(WINDOWS)
+    GUID uuid = { 0 };
+    HRESULT hr = CoCreateGuid(&uuid);
+    if (FAILED(hr))
+        return String();
+    wchar_t uuidStr[40];
+    int num = StringFromGUID2(uuid, reinterpret_cast<LPOLESTR>(uuidStr), ARRAYSIZE(uuidStr));
+    ASSERT(num == 39);
+    String canonicalUuidStr = String(uuidStr + 1, num - 3).lower(); // remove opening and closing bracket and make it lower.
+    ASSERT(canonicalUuidStr[uuidVersionIdentifierIndex] == uuidVersionRequired);
+    return canonicalUuidStr;
+#elif OS(DARWIN)
+    CFUUIDRef uuid = CFUUIDCreate(0);
+    CFStringRef uuidStrRef = CFUUIDCreateString(0, uuid);
+    String uuidStr(uuidStrRef);
+    CFRelease(uuidStrRef);
+    CFRelease(uuid);
+    String canonicalUuidStr = uuidStr.lower(); // make it lower.
+    ASSERT(canonicalUuidStr[uuidVersionIdentifierIndex] == uuidVersionRequired);
+    return canonicalUuidStr;
+#elif OS(LINUX)
+    FILE* fptr = fopen("/proc/sys/kernel/random/uuid", "r");
+    if (!fptr)
+        return String();
+    char uuidStr[37] = {0};
+    if (!fgets(uuidStr, sizeof(uuidStr) - 1, fptr))
+        return String();
+    fclose(fptr);
+    String canonicalUuidStr = String(uuidStr).lower(); // make it lower.
+    ASSERT(canonicalUuidStr[uuidVersionIdentifierIndex] == uuidVersionRequired);
+    return canonicalUuidStr;
+#else
+    notImplemented();
+    return String();
+#endif    
+}
+
+}