Added QAsn1Element

This element can be used for backends that do not offer all the
information that is needed when implementing a ssl certificate backend.
WinRT and the SecureTransport lack functionality in this area for
example.

The sources and tests are added for ssl and openssl configurations in order
to be tested. The condition for adding these can be changed as soon
as they are used by an actual implementation

Change-Id: I2b836133105afdc178bf3b1ee7d732bea069effa
Reviewed-by: Andrew Knight <andrew.knight@digia.com>

1 files changed, 291 insertions, 0 deletions

diff --git a/src/network/ssl/qasn1element.cpp b/src/network/ssl/qasn1element.cpp
new file mode 100644
index 0000000000..d282a02827
--- /dev/null
+++ b/src/network/ssl/qasn1element.cpp
@@ -0,0 +1,291 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 Jeremy Lainé <jeremy.laine@m4x.org>
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the QtNetwork module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** 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, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, 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.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+
+#include "qasn1element_p.h"
+
+#include <QtCore/qdatastream.h>
+#include <QtCore/qdatetime.h>
+#include <QtCore/qvector.h>
+#include <QDebug>
+
+QT_BEGIN_NAMESPACE
+
+typedef QMap<QByteArray, QByteArray> OidNameMap;
+static OidNameMap createOidMap()
+{
+    OidNameMap oids;
+    // used by unit tests
+    oids.insert(oids.end(), QByteArrayLiteral("0.9.2342.19200300.100.1.5"), QByteArrayLiteral("favouriteDrink"));
+    oids.insert(oids.end(), QByteArrayLiteral("1.2.840.113549.1.9.1"), QByteArrayLiteral("emailAddress"));
+    oids.insert(oids.end(), QByteArrayLiteral("2.5.4.10"), QByteArrayLiteral("O"));
+    oids.insert(oids.end(), QByteArrayLiteral("2.5.4.11"), QByteArrayLiteral("OU"));
+    oids.insert(oids.end(), QByteArrayLiteral("2.5.4.12"), QByteArrayLiteral("title"));
+    oids.insert(oids.end(), QByteArrayLiteral("2.5.4.13"), QByteArrayLiteral("description"));
+    oids.insert(oids.end(), QByteArrayLiteral("2.5.4.17"), QByteArrayLiteral("postalCode"));
+    oids.insert(oids.end(), QByteArrayLiteral("2.5.4.3"), QByteArrayLiteral("CN"));
+    oids.insert(oids.end(), QByteArrayLiteral("2.5.4.4"), QByteArrayLiteral("SN"));
+    oids.insert(oids.end(), QByteArrayLiteral("2.5.4.41"), QByteArrayLiteral("name"));
+    oids.insert(oids.end(), QByteArrayLiteral("2.5.4.42"), QByteArrayLiteral("GN"));
+    oids.insert(oids.end(), QByteArrayLiteral("2.5.4.43"), QByteArrayLiteral("initials"));
+    oids.insert(oids.end(), QByteArrayLiteral("2.5.4.46"), QByteArrayLiteral("dnQualifier"));
+    oids.insert(oids.end(), QByteArrayLiteral("2.5.4.5"), QByteArrayLiteral("serialNumber"));
+    oids.insert(oids.end(), QByteArrayLiteral("2.5.4.6"), QByteArrayLiteral("C"));
+    oids.insert(oids.end(), QByteArrayLiteral("2.5.4.7"), QByteArrayLiteral("L"));
+    oids.insert(oids.end(), QByteArrayLiteral("2.5.4.8"), QByteArrayLiteral("ST"));
+    oids.insert(oids.end(), QByteArrayLiteral("2.5.4.9"), QByteArrayLiteral("street"));
+    return oids;
+}
+Q_GLOBAL_STATIC_WITH_ARGS(OidNameMap, oidNameMap, (createOidMap()))
+
+QAsn1Element::QAsn1Element(quint8 type, const QByteArray &value)
+    : mType(type)
+    , mValue(value)
+{
+}
+
+bool QAsn1Element::read(QDataStream &stream)
+{
+    // type
+    quint8 tmpType;
+    stream >> tmpType;
+    if (!tmpType)
+        return false;
+
+    // length
+    qint64 length = 0;
+    quint8 first;
+    stream >> first;
+    if (first & 0x80) {
+        // long form
+        const quint8 bytes = (first & 0x7f);
+        if (bytes > 7)
+            return false;
+
+        quint8 b;
+        for (int i = 0; i < bytes; i++) {
+            stream >> b;
+            length = (length << 8) | b;
+        }
+    } else {
+        // short form
+        length = (first & 0x7f);
+    }
+
+    // value
+    QByteArray tmpValue;
+    tmpValue.resize(length);
+    int count = stream.readRawData(tmpValue.data(), tmpValue.size());
+    if (count != length)
+        return false;
+
+    mType = tmpType;
+    mValue.swap(tmpValue);
+    return true;
+}
+
+bool QAsn1Element::read(const QByteArray &data)
+{
+    QDataStream stream(data);
+    return read(stream);
+}
+
+void QAsn1Element::write(QDataStream &stream) const
+{
+    // type
+    stream << mType;
+
+    // length
+    qint64 length = mValue.size();
+    if (length >= 128) {
+        // long form
+        quint8 encodedLength = 0x80;
+        QByteArray ba;
+        while (length) {
+            ba.prepend(quint8((length & 0xff)));
+            length >>= 8;
+            encodedLength += 1;
+        }
+        stream << encodedLength;
+        stream.writeRawData(ba.data(), ba.size());
+    } else {
+        // short form
+        stream << quint8(length);
+    }
+
+    // value
+    stream.writeRawData(mValue.data(), mValue.size());
+}
+
+QAsn1Element QAsn1Element::fromInteger(unsigned int val)
+{
+    QAsn1Element elem(QAsn1Element::IntegerType);
+    while (val > 127) {
+        elem.mValue.prepend(val & 0xff);
+        val >>= 8;
+    }
+    elem.mValue.prepend(val & 0x7f);
+    return elem;
+}
+
+QAsn1Element QAsn1Element::fromVector(const QVector<QAsn1Element> &items)
+{
+    QAsn1Element seq;
+    seq.mType = SequenceType;
+    QDataStream stream(&seq.mValue, QIODevice::WriteOnly);
+    for (QVector<QAsn1Element>::const_iterator it = items.cbegin(), end = items.cend(); it != end; ++it)
+        it->write(stream);
+    return seq;
+}
+
+QAsn1Element QAsn1Element::fromObjectId(const QByteArray &id)
+{
+    QAsn1Element elem;
+    elem.mType = ObjectIdentifierType;
+    QList<QByteArray> bits = id.split('.');
+    Q_ASSERT(bits.size() > 2);
+    elem.mValue += quint8((bits[0].toUInt() * 40 + bits[1].toUInt()));
+    for (int i = 2; i < bits.size(); ++i) {
+        char buffer[std::numeric_limits<unsigned int>::digits / 7 + 2];
+        char *pBuffer = buffer + sizeof(buffer);
+        *--pBuffer = '\0';
+        unsigned int node = bits[i].toUInt();
+        *--pBuffer = quint8((node & 0x7f));
+        node >>= 7;
+        while (node) {
+            *--pBuffer = quint8(((node & 0x7f) | 0x80));
+            node >>= 7;
+        }
+        elem.mValue += pBuffer;
+    }
+    return elem;
+}
+
+QDateTime QAsn1Element::toDateTime() const
+{
+    if (mValue.endsWith('Z')) {
+        if (mType == UtcTimeType && mValue.size() == 13)
+            return QDateTime(QDate(2000 + mValue.mid(0, 2).toInt(),
+                                   mValue.mid(2, 2).toInt(),
+                                   mValue.mid(4, 2).toInt()),
+                             QTime(mValue.mid(6, 2).toInt(),
+                                   mValue.mid(8, 2).toInt(),
+                                   mValue.mid(10, 2).toInt()),
+                             Qt::UTC);
+        else if (mType == GeneralizedTimeType && mValue.size() == 15)
+            return QDateTime(QDate(mValue.mid(0, 4).toInt(),
+                                   mValue.mid(4, 2).toInt(),
+                                   mValue.mid(6, 2).toInt()),
+                             QTime(mValue.mid(8, 2).toInt(),
+                                   mValue.mid(10, 2).toInt(),
+                                   mValue.mid(12, 2).toInt()),
+                             Qt::UTC);
+    }
+    return QDateTime();
+}
+
+QMultiMap<QByteArray, QString> QAsn1Element::toInfo() const
+{
+    QMultiMap<QByteArray, QString> info;
+    QAsn1Element elem;
+    QDataStream issuerStream(mValue);
+    while (elem.read(issuerStream) && elem.mType == QAsn1Element::SetType) {
+        QAsn1Element issuerElem;
+        QDataStream setStream(elem.mValue);
+        if (issuerElem.read(setStream) && issuerElem.mType == QAsn1Element::SequenceType) {
+            QVector<QAsn1Element> elems = issuerElem.toVector();
+            if (elems.size() == 2) {
+                const QByteArray key = elems.front().toObjectName();
+                if (!key.isEmpty())
+                    info.insert(key, elems.back().toString());
+            }
+        }
+    }
+    return info;
+}
+
+QVector<QAsn1Element> QAsn1Element::toVector() const
+{
+    QVector<QAsn1Element> items;
+    if (mType == SequenceType) {
+        QAsn1Element elem;
+        QDataStream stream(mValue);
+        while (elem.read(stream))
+            items << elem;
+    }
+    return items;
+}
+
+QByteArray QAsn1Element::toObjectId() const
+{
+    QByteArray key;
+    if (mType == ObjectIdentifierType && !mValue.isEmpty()) {
+        quint8 b = mValue[0];
+        key += QByteArray::number(b / 40) + '.' + QByteArray::number (b % 40);
+        unsigned int val = 0;
+        for (int i = 1; i < mValue.size(); ++i) {
+            b = mValue[i];
+            val = (val << 7) | (b & 0x7f);
+            if (!(b & 0x80)) {
+                key += '.' + QByteArray::number(val);
+                val = 0;
+            }
+        }
+    }
+    return key;
+}
+
+QByteArray QAsn1Element::toObjectName() const
+{
+    QByteArray key = toObjectId();
+    return oidNameMap->value(key, key);
+}
+
+QString QAsn1Element::toString() const
+{
+    if (mType == PrintableStringType || mType == TeletexStringType)
+        return QString::fromLatin1(mValue, mValue.size());
+    if (mType == Utf8StringType)
+        return QString::fromUtf8(mValue, mValue.size());
+    return QString();
+}
+
+QT_END_NAMESPACE