Long live Qt for S60!

1 files changed, 164 insertions, 0 deletions

diff --git a/util/install/keygen/keyinfo.cpp b/util/install/keygen/keyinfo.cpp
new file mode 100644
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--- /dev/null
+++ b/util/install/keygen/keyinfo.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the utils of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <qregexp.h>
+
+#include "keyinfo.h"
+
+// Magic values
+enum {
+    ProductMagic = 0xB292,
+    PlatformMagic = 0x5C7E,
+    LicenseSchemaMagic = 0xE3B,
+    LicenseIDMagic = 0xCE57,
+    FeatureMagic = 0x4D5
+};
+
+static const char Xalphabet[] = "WX9MUEC7AJH3KS6DB4YFG2L5PQRT8VNZ";
+static const int XAlphabetSize = sizeof(Xalphabet) - 1;
+
+static QString encodeBaseX(uint k)
+{
+    QString str;
+    do {
+	str += QChar(Xalphabet[ k % XAlphabetSize ]);
+	k /= XAlphabetSize;
+    } while (k > 0u);
+    return str;
+}
+
+static uint decodeBaseX(const QString &str)
+{
+    uint k = 0;
+    int i = str.length();
+    while (i > 0) {
+	i--;
+	const char *p = strchr(Xalphabet, str[i].unicode());
+	if (p == 0) {
+	    return 0;
+	} else {
+	    k = (k * XAlphabetSize) + (p - Xalphabet);
+	}
+    }
+    return k;
+}
+
+static const QDate StartDate(2001, 1, 1);
+static const uint MaxDays = 4000;
+    
+static QString encodedExpiryDate(const QDate &date)
+{
+    uint days = StartDate.daysTo(date);
+    if (days >= MaxDays)
+	days = MaxDays - 1;
+    uint x = (days << 7) ^ days;
+    return encodeBaseX(x ^ 0x0000beef);
+}
+
+static QDate decodedExpiryDate(const QString &encodedDate)
+{
+    QDate date;
+    uint y = decodeBaseX(encodedDate);
+    uint x = y ^ 0x0000beef;
+    uint days = ( (x >> 7) ^ x ) >> 7;
+    if (days >= MaxDays)
+        return QDate();
+    date = StartDate.addDays( days );
+    if (encodedExpiryDate(date) != encodedDate)
+        return QDate();
+    return date;
+}
+
+bool decodeLicenseKey(const QString &licenseKey,
+                      uint *products,
+                      uint *platforms,
+                      uint *licenseSchema,
+                      uint *licenseFeatures,
+                      uint *licenseID,
+                      QDate *expiryDate)
+{
+    QStringList licenseParts;
+    int dash = -1;
+    do {
+        int start = dash + 1;
+        dash = licenseKey.indexOf('-', start);
+        licenseParts.append(licenseKey.mid(start, dash - start));
+    } while (dash != -1);
+
+    // license keys have 7 fields
+    if (licenseParts.size() != 7) {
+        // invalid key
+        return false;
+    }
+    QString productPart = licenseParts.at(0);
+    QString platformPart = licenseParts.at(1);
+    QString licenseSchemaPart = licenseParts.at(2);
+    QString licenseFeaturesPart = licenseParts.at(3);
+    QString licenseIDPart = licenseParts.at(4);
+    QString expiryDatePart = licenseParts.at(5);
+    QString checksumPart = licenseParts.at(6);
+    QString keyPart = productPart
+                      + '-' + platformPart
+                      + '-' + licenseSchemaPart
+                      + '-' + licenseFeaturesPart
+                      + '-' + licenseIDPart
+                      + '-' + expiryDatePart;
+
+    // verify the crc
+    QByteArray ba = keyPart.toLatin1();
+    int crc = qChecksum(ba.constData(), ba.size());
+    QString checksumVerification = QString("%1%2")
+                                   .arg((crc & 0xff),2,16,QChar('0'))
+                                   .arg((crc >> 8 & 0xff),2,16,QChar('0'))
+                                   .toUpper();
+    if (checksumPart != checksumVerification) {
+        // invalid checksum
+        return false;
+    }
+
+    *products = decodeBaseX(productPart) ^ ProductMagic;
+    *platforms = decodeBaseX(platformPart) ^ PlatformMagic;
+    *licenseSchema = decodeBaseX(licenseSchemaPart) ^ LicenseSchemaMagic;
+    *licenseFeatures = decodeBaseX(licenseFeaturesPart) ^ FeatureMagic;
+    *licenseID = decodeBaseX(licenseIDPart) ^ LicenseIDMagic;
+    *expiryDate = decodedExpiryDate(expiryDatePart);
+    return true;
+}