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/*
* 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>
#elif OS(DARWIN) && USE(CF)
#include <CoreFoundation/CoreFoundation.h>
#elif OS(LINUX) && !PLATFORM(CHROMIUM)
#include <stdio.h>
#elif (OS(LINUX) && PLATFORM(CHROMIUM)) || (OS(DARWIN) && !USE(CF))
#include <wtf/HexNumber.h>
#include <wtf/RandomNumber.h>
#include <wtf/text/StringBuilder.h>
#endif
namespace WebCore {
static const char uuidVersionRequired = '4';
static const int uuidVersionIdentifierIndex = 14;
String createCanonicalUUIDString()
{
#if PLATFORM(QT) && !defined(QT_NO_QUUID_STRING)
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), WTF_ARRAY_LENGTH(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) && USE(CF)
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) && !PLATFORM(CHROMIUM)
// This does not work for the linux system that turns on sandbox.
FILE* fptr = fopen("/proc/sys/kernel/random/uuid", "r");
if (!fptr)
return String();
char uuidStr[37];
char* result = fgets(uuidStr, sizeof(uuidStr), fptr);
fclose(fptr);
if (!result)
return String();
String canonicalUuidStr = String(uuidStr).lower(); // make it lower.
ASSERT(canonicalUuidStr[uuidVersionIdentifierIndex] == uuidVersionRequired);
return canonicalUuidStr;
#elif (OS(LINUX) && PLATFORM(CHROMIUM)) || (OS(DARWIN) && !USE(CF))
unsigned randomData[4];
for (size_t i = 0; i < WTF_ARRAY_LENGTH(randomData); ++i)
randomData[i] = static_cast<unsigned>(randomNumber() * (std::numeric_limits<unsigned>::max() + 1.0));
// Format as Version 4 UUID.
StringBuilder builder;
appendUnsignedAsHexFixedSize(randomData[0], builder, 8, Lowercase);
builder.append("-");
appendUnsignedAsHexFixedSize(randomData[1] >> 16, builder, 4, Lowercase);
builder.append("-4");
appendUnsignedAsHexFixedSize(randomData[1] & 0x00000fff, builder, 3, Lowercase);
builder.append("-");
appendUnsignedAsHexFixedSize((randomData[2] >> 30) | 0x8, builder, 1, Lowercase);
appendUnsignedAsHexFixedSize((randomData[2] >> 16) & 0x00000fff, builder, 3, Lowercase);
builder.append("-");
appendUnsignedAsHexFixedSize(randomData[2] & 0x0000ffff, builder, 4, Lowercase);
appendUnsignedAsHexFixedSize(randomData[3], builder, 8, Lowercase);
builder.append("\n");
return builder.toString();
#else
notImplemented();
return String();
#endif
}
}
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