Initial import from the monolithic Qt.

This is the beginning of revision history for this module. If you
want to look at revision history older than this, please refer to the
Qt Git wiki for how to use Git history grafting. At the time of
writing, this wiki is located here:

http://qt.gitorious.org/qt/pages/GitIntroductionWithQt

If you have already performed the grafting and you don't see any
history beyond this commit, try running "git log" with the "--follow"
argument.

Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12

1 files changed, 858 insertions, 0 deletions

diff --git a/src/network/ssl/qsslcertificate.cpp b/src/network/ssl/qsslcertificate.cpp
new file mode 100644
index 0000000000..a5cdf011aa
--- /dev/null
+++ b/src/network/ssl/qsslcertificate.cpp
@@ -0,0 +1,858 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtNetwork module 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 Technology Preview License Agreement accompanying
+** this package.
+**
+** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+
+/*!
+    \class QSslCertificate
+    \brief The QSslCertificate class provides a convenient API for an X509 certificate.
+    \since 4.3
+
+    \reentrant
+    \ingroup network
+    \ingroup ssl
+    \inmodule QtNetwork
+
+    QSslCertificate stores an X509 certificate, and is commonly used
+    to verify the identity and store information about the local host,
+    a remotely connected peer, or a trusted third party Certificate
+    Authority.
+
+    There are many ways to construct a QSslCertificate. The most
+    common way is to call QSslSocket::peerCertificate(), which returns
+    a QSslCertificate object, or QSslSocket::peerCertificateChain(),
+    which returns a list of them. You can also load certificates from
+    a DER (binary) or PEM (Base64) encoded bundle, typically stored as
+    one or more local files, or in a Qt Resource.
+
+    You can call isNull() to check if your certificate is null. By
+    default, QSslCertificate constructs a null certificate. To check
+    if the certificate is valid, call isValid(). A null certificate is
+    invalid, but an invalid certificate is not necessarily null. If
+    you want to reset all contents in a certificate, call clear().
+
+    After loading a certificate, you can find information about the
+    certificate, its subject, and its issuer, by calling one of the
+    many accessor functions, including version(), serialNumber(),
+    issuerInfo() and subjectInfo(). You can call effectiveDate() and
+    expiryDate() to check when the certificate starts being
+    effective and when it expires.
+    The publicKey() function returns the certificate
+    subject's public key as a QSslKey. You can call issuerInfo() or
+    subjectInfo() to get detailed information about the certificate
+    issuer and its subject.
+
+    Internally, QSslCertificate is stored as an X509 structure. You
+    can access this handle by calling handle(), but the results are
+    likely to not be portable.
+
+    \sa QSslSocket, QSslKey, QSslCipher, QSslError
+*/
+
+/*!
+    \enum QSslCertificate::SubjectInfo
+
+    Describes keys that you can pass to QSslCertificate::issuerInfo() or
+    QSslCertificate::subjectInfo() to get information about the certificate
+    issuer or subject.
+
+    \value Organization "O" The name of the organization.
+
+    \value CommonName "CN" The common name; most often this is used to store
+    the host name.
+
+    \value LocalityName "L" The locality.
+
+    \value OrganizationalUnitName "OU" The organizational unit name.
+
+    \value CountryName "C" The country.
+
+    \value StateOrProvinceName "ST" The state or province.
+*/
+
+#include "qsslsocket_openssl_symbols_p.h"
+#include "qsslcertificate.h"
+#include "qsslcertificate_p.h"
+#include "qsslkey.h"
+#include "qsslkey_p.h"
+
+#include <QtCore/qatomic.h>
+#include <QtCore/qdatetime.h>
+#include <QtCore/qdebug.h>
+#include <QtCore/qdir.h>
+#include <QtCore/qdiriterator.h>
+#include <QtCore/qfile.h>
+#include <QtCore/qfileinfo.h>
+#include <QtCore/qmap.h>
+#include <QtCore/qstring.h>
+#include <QtCore/qstringlist.h>
+
+QT_BEGIN_NAMESPACE
+
+// forward declaration
+static QMap<QString, QString> _q_mapFromOnelineName(char *name);
+
+/*!
+    Constructs a QSslCertificate by reading \a format encoded data
+    from \a device and using the first certificate found. You can
+    later call isNull() to see if \a device contained a certificate,
+    and if this certificate was loaded successfully.
+*/
+QSslCertificate::QSslCertificate(QIODevice *device, QSsl::EncodingFormat format)
+    : d(new QSslCertificatePrivate)
+{
+    QSslSocketPrivate::ensureInitialized();
+    if (device)
+        d->init(device->readAll(), format);
+}
+
+/*!
+    Constructs a QSslCertificate by parsing the \a format encoded
+    \a data and using the first available certificate found. You can
+    later call isNull() to see if \a data contained a certificate,
+    and if this certificate was loaded successfully.
+*/
+QSslCertificate::QSslCertificate(const QByteArray &data, QSsl::EncodingFormat format)
+    : d(new QSslCertificatePrivate)
+{
+    QSslSocketPrivate::ensureInitialized();
+    d->init(data, format);
+}
+
+/*!
+    Constructs an identical copy of \a other.
+*/
+QSslCertificate::QSslCertificate(const QSslCertificate &other) : d(other.d)
+{
+}
+
+/*!
+    Destroys the QSslCertificate.
+*/
+QSslCertificate::~QSslCertificate()
+{
+}
+
+/*!
+    Copies the contents of \a other into this certificate, making the two
+    certificates identical.
+*/
+QSslCertificate &QSslCertificate::operator=(const QSslCertificate &other)
+{
+    d = other.d;
+    return *this;
+}
+
+/*!
+    Returns true if this certificate is the same as \a other; otherwise
+    returns false.
+*/
+bool QSslCertificate::operator==(const QSslCertificate &other) const
+{
+    if (d == other.d)
+        return true;
+    if (d->null && other.d->null)
+        return true;
+    if (d->x509 && other.d->x509)
+        return q_X509_cmp(d->x509, other.d->x509) == 0;
+    return false;
+}
+
+/*!
+    \fn bool QSslCertificate::operator!=(const QSslCertificate &other) const
+
+    Returns true if this certificate is not the same as \a other; otherwise
+    returns false.
+*/
+
+/*!
+    Returns true if this is a null certificate (i.e., a certificate
+    with no contents); otherwise returns false.
+
+    By default, QSslCertificate constructs a null certificate.
+
+    \sa isValid(), clear()
+*/
+bool QSslCertificate::isNull() const
+{
+    return d->null;
+}
+
+/*!
+    Returns true if this certificate is valid; otherwise returns
+    false.
+
+    Note: Currently, this function checks that the current
+    data-time is within the date-time range during which the
+    certificate is considered valid, and checks that the
+    certificate is not in a blacklist of fraudulent certificates.
+
+    \sa isNull()
+*/
+bool QSslCertificate::isValid() const
+{
+    const QDateTime currentTime = QDateTime::currentDateTime();
+    return currentTime >= d->notValidBefore &&
+            currentTime <= d->notValidAfter &&
+            ! QSslCertificatePrivate::isBlacklisted(*this);
+}
+
+/*!
+    Clears the contents of this certificate, making it a null
+    certificate.
+
+    \sa isNull()
+*/
+void QSslCertificate::clear()
+{
+    if (isNull())
+        return;
+    d = new QSslCertificatePrivate;
+}
+
+/*!
+    Returns the certificate's version string.
+*/
+QByteArray QSslCertificate::version() const
+{
+    if (d->versionString.isEmpty() && d->x509)
+        d->versionString =
+            QByteArray::number(qlonglong(q_ASN1_INTEGER_get(d->x509->cert_info->version)) + 1);
+
+    return d->versionString;
+}
+
+/*!
+    Returns the certificate's serial number string in decimal format.
+    In case the serial number cannot be converted to decimal format
+    (i.e. if it is bigger than 4294967295, which means it does not fit into 4 bytes),
+    its hexadecimal version is returned.
+*/
+QByteArray QSslCertificate::serialNumber() const
+{
+    if (d->serialNumberString.isEmpty() && d->x509) {
+        ASN1_INTEGER *serialNumber = d->x509->cert_info->serialNumber;
+        // if we cannot convert to a long, just output the hexadecimal number
+        if (serialNumber->length > 4) {
+            QByteArray hexString;
+            hexString.reserve(serialNumber->length * 3);
+            for (int a = 0; a < serialNumber->length; ++a) {
+                hexString += QByteArray::number(serialNumber->data[a], 16).rightJustified(2, '0');
+                hexString += ':';
+            }
+            hexString.chop(1);
+            d->serialNumberString = hexString;
+        } else {
+            d->serialNumberString = QByteArray::number(qlonglong(q_ASN1_INTEGER_get(serialNumber)));
+        }
+    }
+    return d->serialNumberString;
+}
+
+/*!
+    Returns a cryptographic digest of this certificate. By default,
+    an MD5 digest will be generated, but you can also specify a
+    custom \a algorithm.
+*/
+QByteArray QSslCertificate::digest(QCryptographicHash::Algorithm algorithm) const
+{
+    return QCryptographicHash::hash(toDer(), algorithm);
+}
+
+static QString _q_SubjectInfoToString(QSslCertificate::SubjectInfo info)
+{
+    QString str;
+    switch (info) {
+    case QSslCertificate::Organization: str = QLatin1String("O"); break;
+    case QSslCertificate::CommonName: str = QLatin1String("CN"); break;
+    case QSslCertificate::LocalityName: str = QLatin1String("L"); break;
+    case QSslCertificate::OrganizationalUnitName: str = QLatin1String("OU"); break;
+    case QSslCertificate::CountryName: str = QLatin1String("C"); break;
+    case QSslCertificate::StateOrProvinceName: str = QLatin1String("ST"); break;
+    }
+    return str;
+}
+
+/*!
+  \fn QString QSslCertificate::issuerInfo(SubjectInfo subject) const
+  
+  Returns the issuer information for the \a subject from the
+  certificate, or an empty string if there is no information for
+  \a subject in the certificate.
+
+  \sa subjectInfo()
+*/
+QString QSslCertificate::issuerInfo(SubjectInfo info) const
+{
+    // lazy init
+    if (d->issuerInfo.isEmpty() && d->x509)
+        d->issuerInfo =
+                _q_mapFromOnelineName(q_X509_NAME_oneline(q_X509_get_issuer_name(d->x509), 0, 0));
+
+    return d->issuerInfo.value(_q_SubjectInfoToString(info));
+}
+
+/*!
+  Returns the issuer information for \a tag from the certificate,
+  or an empty string if there is no information for \a tag in the
+  certificate.
+
+  \sa subjectInfo()
+*/
+QString QSslCertificate::issuerInfo(const QByteArray &tag) const
+{
+    // lazy init
+    if (d->issuerInfo.isEmpty() && d->x509)
+        d->issuerInfo =
+                _q_mapFromOnelineName(q_X509_NAME_oneline(q_X509_get_issuer_name(d->x509), 0, 0));
+
+    return d->issuerInfo.value(QString::fromLatin1(tag));
+}
+
+/*!
+
+  \fn QString QSslCertificate::subjectInfo(SubjectInfo subject) const
+
+  Returns the information for the \a subject, or an empty string if
+  there is no information for \a subject in the certificate.
+
+    \sa issuerInfo()
+*/
+QString QSslCertificate::subjectInfo(SubjectInfo info) const
+{
+    // lazy init
+    if (d->subjectInfo.isEmpty() && d->x509)
+        d->subjectInfo =
+                _q_mapFromOnelineName(q_X509_NAME_oneline(q_X509_get_subject_name(d->x509), 0, 0));
+
+    return d->subjectInfo.value(_q_SubjectInfoToString(info));
+}
+
+/*!
+    Returns the subject information for \a tag, or an empty string if
+    there is no information for \a tag in the certificate.
+
+    \sa issuerInfo()
+*/
+QString QSslCertificate::subjectInfo(const QByteArray &tag) const
+{
+    // lazy init
+    if (d->subjectInfo.isEmpty() && d->x509)
+        d->subjectInfo =
+                _q_mapFromOnelineName(q_X509_NAME_oneline(q_X509_get_subject_name(d->x509), 0, 0));
+
+    return d->subjectInfo.value(QString::fromLatin1(tag));
+}
+
+/*!
+  Returns the list of alternative subject names for this
+  certificate. The alternate subject names typically contain host
+  names, optionally with wildcards, that are valid for this
+  certificate.
+  
+  These names are tested against the connected peer's host name, if
+  either the subject information for \l CommonName doesn't define a
+  valid host name, or the subject info name doesn't match the peer's
+  host name.
+  
+  \sa subjectInfo()
+*/
+QMultiMap<QSsl::AlternateNameEntryType, QString> QSslCertificate::alternateSubjectNames() const
+{
+    QMultiMap<QSsl::AlternateNameEntryType, QString> result;
+
+    if (!d->x509)
+        return result;
+
+    STACK_OF(GENERAL_NAME) *altNames = (STACK_OF(GENERAL_NAME)*)q_X509_get_ext_d2i(d->x509, NID_subject_alt_name, 0, 0);
+
+    if (altNames) {
+        for (int i = 0; i < q_sk_GENERAL_NAME_num(altNames); ++i) {
+            const GENERAL_NAME *genName = q_sk_GENERAL_NAME_value(altNames, i);
+            if (genName->type != GEN_DNS && genName->type != GEN_EMAIL)
+                continue;
+
+            int len = q_ASN1_STRING_length(genName->d.ia5);
+            if (len < 0 || len >= 8192) {
+                // broken name
+                continue;
+            }
+
+            const char *altNameStr = reinterpret_cast<const char *>(q_ASN1_STRING_data(genName->d.ia5));
+            const QString altName = QString::fromLatin1(altNameStr, len);
+            if (genName->type == GEN_DNS)
+                result.insert(QSsl::DnsEntry, altName);
+            else if (genName->type == GEN_EMAIL)
+                result.insert(QSsl::EmailEntry, altName);
+        }
+        q_sk_pop_free((STACK*)altNames, reinterpret_cast<void(*)(void*)>(q_sk_free));
+    }
+
+    return result;
+}
+
+/*!
+  Returns the date-time that the certificate becomes valid, or an
+  empty QDateTime if this is a null certificate.
+
+  \sa expiryDate()
+*/
+QDateTime QSslCertificate::effectiveDate() const
+{
+    return d->notValidBefore;
+}
+
+/*!
+  Returns the date-time that the certificate expires, or an empty
+  QDateTime if this is a null certificate.
+
+    \sa effectiveDate()
+*/
+QDateTime QSslCertificate::expiryDate() const
+{
+    return d->notValidAfter;
+}
+
+/*!
+    Returns a pointer to the native certificate handle, if there is
+    one, or a null pointer otherwise.
+
+    You can use this handle, together with the native API, to access
+    extended information about the certificate.
+
+    \warning Use of this function has a high probability of being
+    non-portable, and its return value may vary from platform to
+    platform or change from minor release to minor release.
+*/
+Qt::HANDLE QSslCertificate::handle() const
+{
+    return Qt::HANDLE(d->x509);
+}
+
+/*!
+    Returns the certificate subject's public key.
+*/
+QSslKey QSslCertificate::publicKey() const
+{
+    if (!d->x509)
+        return QSslKey();
+
+    QSslKey key;
+
+    key.d->type = QSsl::PublicKey;
+    X509_PUBKEY *xkey = d->x509->cert_info->key;
+    EVP_PKEY *pkey = q_X509_PUBKEY_get(xkey);
+    Q_ASSERT(pkey);
+
+    if (q_EVP_PKEY_type(pkey->type) == EVP_PKEY_RSA) {
+        key.d->rsa = q_EVP_PKEY_get1_RSA(pkey);
+        key.d->algorithm = QSsl::Rsa;
+        key.d->isNull = false;
+    } else if (q_EVP_PKEY_type(pkey->type) == EVP_PKEY_DSA) {
+        key.d->dsa = q_EVP_PKEY_get1_DSA(pkey);
+        key.d->algorithm = QSsl::Dsa;
+        key.d->isNull = false;
+    } else if (q_EVP_PKEY_type(pkey->type) == EVP_PKEY_DH) {
+        // DH unsupported
+    } else {
+        // error?
+    }
+
+    q_EVP_PKEY_free(pkey);
+    return key;
+}
+
+/*!
+    Returns this certificate converted to a PEM (Base64) encoded
+    representation.
+*/
+QByteArray QSslCertificate::toPem() const
+{
+    if (!d->x509)
+        return QByteArray();
+    return d->QByteArray_from_X509(d->x509, QSsl::Pem);
+}
+
+/*!
+    Returns this certificate converted to a DER (binary) encoded
+    representation.
+*/
+QByteArray QSslCertificate::toDer() const
+{
+    if (!d->x509)
+        return QByteArray();
+    return d->QByteArray_from_X509(d->x509, QSsl::Der);
+}
+
+/*!
+    Searches all files in the \a path for certificates encoded in the
+    specified \a format and returns them in a list. \e must be a file or a
+    pattern matching one or more files, as specified by \a syntax.
+
+    Example:
+    
+    \snippet doc/src/snippets/code/src_network_ssl_qsslcertificate.cpp 0
+
+    \sa fromData()
+*/
+QList<QSslCertificate> QSslCertificate::fromPath(const QString &path,
+                                                 QSsl::EncodingFormat format,
+                                                 QRegExp::PatternSyntax syntax)
+{
+    // $, (,), *, +, ., ?, [, ,], ^, {, | and }.
+    int pos = -1;
+    if (syntax == QRegExp::Wildcard)
+        pos = path.indexOf(QRegExp(QLatin1String("[^\\][\\*\\?\\[\\]]")));
+    else if (syntax != QRegExp::FixedString)
+        pos = path.indexOf(QRegExp(QLatin1String("[^\\][\\$\\(\\)\\*\\+\\.\\?\\[\\]\\^\\{\\}\\|]")));
+    QString pathPrefix = path.left(pos); // == path if pos < 0
+    if (pos != -1)
+        pathPrefix = pathPrefix.left(pathPrefix.lastIndexOf(QLatin1Char('/')));
+
+    // Special case - if the prefix ends up being nothing, use "." instead and
+    // chop off the first two characters from the glob'ed paths.
+    int startIndex = 0;
+    if (pathPrefix.trimmed().isEmpty()) {
+        if(path.startsWith(QLatin1Char('/'))) {
+            pathPrefix = path.left(path.indexOf(QRegExp(QLatin1String("[\\*\\?\\[]"))));
+            pathPrefix = path.left(path.lastIndexOf(QLatin1Char('/')));
+        } else {
+            startIndex = 2;
+            pathPrefix = QLatin1String(".");
+        }
+    }
+
+    // The path is a file.
+    if (pos == -1 && QFileInfo(pathPrefix).isFile()) {
+        QFile file(pathPrefix);
+        if (file.open(QIODevice::ReadOnly | QIODevice::Text))
+            return QSslCertificate::fromData(file.readAll(),format);
+        return QList<QSslCertificate>();
+    }
+
+    // The path can be a file or directory.
+    QList<QSslCertificate> certs;
+    QRegExp pattern(path, Qt::CaseSensitive, syntax);
+    QDirIterator it(pathPrefix, QDir::Files, QDirIterator::FollowSymlinks | QDirIterator::Subdirectories);
+    while (it.hasNext()) {
+        QString filePath = startIndex == 0 ? it.next() : it.next().mid(startIndex);
+        if (!pattern.exactMatch(filePath))
+            continue;
+
+        QFile file(filePath);
+        if (file.open(QIODevice::ReadOnly | QIODevice::Text))
+            certs += QSslCertificate::fromData(file.readAll(),format);
+    }
+    return certs;
+}
+
+/*!
+    Searches for and parses all certificates in \a device that are
+    encoded in the specified \a format and returns them in a list of
+    certificates.
+
+    \sa fromData()
+*/
+QList<QSslCertificate> QSslCertificate::fromDevice(QIODevice *device, QSsl::EncodingFormat format)
+{
+    if (!device) {
+        qWarning("QSslCertificate::fromDevice: cannot read from a null device");
+        return QList<QSslCertificate>();
+    }
+    return fromData(device->readAll(), format);
+}
+
+/*!
+    Searches for and parses all certificates in \a data that are
+    encoded in the specified \a format and returns them in a list of
+    certificates.
+
+    \sa fromDevice()
+*/
+QList<QSslCertificate> QSslCertificate::fromData(const QByteArray &data, QSsl::EncodingFormat format)
+{
+    return (format == QSsl::Pem)
+        ? QSslCertificatePrivate::certificatesFromPem(data)
+        : QSslCertificatePrivate::certificatesFromDer(data);
+}
+
+void QSslCertificatePrivate::init(const QByteArray &data, QSsl::EncodingFormat format)
+{
+    if (!data.isEmpty()) {
+        QList<QSslCertificate> certs = (format == QSsl::Pem)
+            ? certificatesFromPem(data, 1)
+            : certificatesFromDer(data, 1);
+        if (!certs.isEmpty()) {
+            *this = *certs.first().d;
+            if (x509)
+                x509 = q_X509_dup(x509);
+        }
+    }
+}
+
+#define BEGINCERTSTRING "-----BEGIN CERTIFICATE-----"
+#define ENDCERTSTRING "-----END CERTIFICATE-----"
+
+// ### refactor against QSsl::pemFromDer() etc. (to avoid redundant implementations)
+QByteArray QSslCertificatePrivate::QByteArray_from_X509(X509 *x509, QSsl::EncodingFormat format)
+{
+    if (!x509) {
+        qWarning("QSslSocketBackendPrivate::X509_to_QByteArray: null X509");
+        return QByteArray();
+    }
+
+    // Use i2d_X509 to convert the X509 to an array.
+    int length = q_i2d_X509(x509, 0);
+    QByteArray array;
+    array.resize(length);
+    char *data = array.data();
+    char **dataP = &data;
+    unsigned char **dataPu = (unsigned char **)dataP;
+    if (q_i2d_X509(x509, dataPu) < 0)
+        return QByteArray();
+
+    if (format == QSsl::Der)
+        return array;
+
+    // Convert to Base64 - wrap at 64 characters.
+    array = array.toBase64();
+    QByteArray tmp;
+    for (int i = 0; i <= array.size() - 64; i += 64) {
+        tmp += QByteArray::fromRawData(array.data() + i, 64);
+        tmp += '\n';
+    }
+    if (int remainder = array.size() % 64) {
+        tmp += QByteArray::fromRawData(array.data() + array.size() - remainder, remainder);
+        tmp += '\n';
+    }
+
+    return BEGINCERTSTRING "\n" + tmp + ENDCERTSTRING "\n";
+}
+
+static QMap<QString, QString> _q_mapFromOnelineName(char *name)
+{
+    QMap<QString, QString> info;
+    QString infoStr = QString::fromLocal8Bit(name);
+    q_CRYPTO_free(name);
+
+    // ### The right-hand encoding seems to allow hex (Regulierungsbeh\xC8orde)
+    //entry.replace(QLatin1String("\\x"), QLatin1String("%"));
+    //entry = QUrl::fromPercentEncoding(entry.toLatin1());
+    // ### See RFC-4630 for more details!
+
+    QRegExp rx(QLatin1String("/([A-Za-z]+)=(.+)"));
+
+    int pos = 0;
+    while ((pos = rx.indexIn(infoStr, pos)) != -1) {
+        const QString name = rx.cap(1);
+
+        QString value = rx.cap(2);
+        const int valuePos = rx.pos(2);
+
+        const int next = rx.indexIn(value);
+        if (next == -1) {
+            info.insert(name, value);
+            break;
+        }
+
+        value = value.left(next);
+        info.insert(name, value);
+        pos = valuePos + value.length();
+    }
+
+    return info;
+}
+
+QSslCertificate QSslCertificatePrivate::QSslCertificate_from_X509(X509 *x509)
+{
+    QSslCertificate certificate;
+    if (!x509 || !QSslSocket::supportsSsl())
+        return certificate;
+
+    ASN1_TIME *nbef = q_X509_get_notBefore(x509);
+    ASN1_TIME *naft = q_X509_get_notAfter(x509);
+    certificate.d->notValidBefore = q_getTimeFromASN1(nbef);
+    certificate.d->notValidAfter = q_getTimeFromASN1(naft);
+    certificate.d->null = false;
+    certificate.d->x509 = q_X509_dup(x509);
+
+    return certificate;
+}
+
+static bool matchLineFeed(const QByteArray &pem, int *offset)
+{
+    char ch = 0;
+
+    // ignore extra whitespace at the end of the line
+    while (*offset < pem.size() && (ch = pem.at(*offset)) == ' ')
+        ++*offset;
+
+    if (ch == '\n') {
+        *offset += 1;
+        return true;
+    }
+    if (ch == '\r' && pem.size() > (*offset + 1) && pem.at(*offset + 1) == '\n') {
+        *offset += 2;
+        return true;
+    }
+    return false;
+}
+
+QList<QSslCertificate> QSslCertificatePrivate::certificatesFromPem(const QByteArray &pem, int count)
+{
+    QList<QSslCertificate> certificates;
+    QSslSocketPrivate::ensureInitialized();
+
+    int offset = 0;
+    while (count == -1 || certificates.size() < count) {
+        int startPos = pem.indexOf(BEGINCERTSTRING, offset);
+        if (startPos == -1)
+            break;
+        startPos += sizeof(BEGINCERTSTRING) - 1;
+        if (!matchLineFeed(pem, &startPos))
+            break;
+
+        int endPos = pem.indexOf(ENDCERTSTRING, startPos);
+        if (endPos == -1)
+            break;
+
+        offset = endPos + sizeof(ENDCERTSTRING) - 1;
+        if (offset < pem.size() && !matchLineFeed(pem, &offset))
+            break;
+
+        QByteArray decoded = QByteArray::fromBase64(
+            QByteArray::fromRawData(pem.data() + startPos, endPos - startPos));
+#if OPENSSL_VERSION_NUMBER >= 0x00908000L
+        const unsigned char *data = (const unsigned char *)decoded.data();
+#else
+        unsigned char *data = (unsigned char *)decoded.data();
+#endif
+
+        if (X509 *x509 = q_d2i_X509(0, &data, decoded.size())) {
+            certificates << QSslCertificate_from_X509(x509);
+            q_X509_free(x509);
+        }
+    }
+
+    return certificates;
+}
+
+QList<QSslCertificate> QSslCertificatePrivate::certificatesFromDer(const QByteArray &der, int count)
+{
+    QList<QSslCertificate> certificates;
+    QSslSocketPrivate::ensureInitialized();
+
+
+#if OPENSSL_VERSION_NUMBER >= 0x00908000L
+        const unsigned char *data = (const unsigned char *)der.data();
+#else
+        unsigned char *data = (unsigned char *)der.data();
+#endif
+    int size = der.size();
+
+    while (count == -1 || certificates.size() < count) {
+        if (X509 *x509 = q_d2i_X509(0, &data, size)) {
+            certificates << QSslCertificate_from_X509(x509);
+            q_X509_free(x509);
+        } else {
+            break;
+        }
+        size -= ((char *)data - der.data());
+    }
+
+    return certificates;
+}
+
+// These certificates are known to be fraudulent and were created during the comodo
+// compromise. See http://www.comodo.com/Comodo-Fraud-Incident-2011-03-23.html
+static const char *certificate_blacklist[] = {
+    "04:7e:cb:e9:fc:a5:5f:7b:d0:9e:ae:36:e1:0c:ae:1e",
+    "f5:c8:6a:f3:61:62:f1:3a:64:f5:4f:6d:c9:58:7c:06",
+    "d7:55:8f:da:f5:f1:10:5b:b2:13:28:2b:70:77:29:a3",
+    "39:2a:43:4f:0e:07:df:1f:8a:a3:05:de:34:e0:c2:29",
+    "3e:75:ce:d4:6b:69:30:21:21:88:30:ae:86:a8:2a:71",
+    "e9:02:8b:95:78:e4:15:dc:1a:71:0a:2b:88:15:44:47",
+    "92:39:d5:34:8f:40:d1:69:5a:74:54:70:e1:f2:3f:43",
+    "b0:b7:13:3e:d0:96:f9:b5:6f:ae:91:c8:74:bd:3a:c0",
+    "d8:f3:5f:4e:b7:87:2b:2d:ab:06:92:e3:15:38:2f:b0",
+    0
+};
+
+bool QSslCertificatePrivate::isBlacklisted(const QSslCertificate &certificate)
+{
+    for (int a = 0; certificate_blacklist[a] != 0; a++) {
+        if (certificate.serialNumber() == certificate_blacklist[a])
+            return true;
+    }
+    return false;
+}
+
+#ifndef QT_NO_DEBUG_STREAM
+QDebug operator<<(QDebug debug, const QSslCertificate &certificate)
+{
+    debug << "QSslCertificate("
+          << certificate.version()
+          << ',' << certificate.serialNumber()
+          << ',' << certificate.digest().toBase64()
+          << ',' << certificate.issuerInfo(QSslCertificate::Organization)
+          << ',' << certificate.subjectInfo(QSslCertificate::Organization)
+          << ',' << certificate.alternateSubjectNames()
+#ifndef QT_NO_TEXTSTREAM
+          << ',' << certificate.effectiveDate()
+          << ',' << certificate.expiryDate()
+#endif
+          << ')';
+    return debug;
+}
+QDebug operator<<(QDebug debug, QSslCertificate::SubjectInfo info)
+{
+    switch (info) {
+    case QSslCertificate::Organization: debug << "Organization"; break;
+    case QSslCertificate::CommonName: debug << "CommonName"; break;
+    case QSslCertificate::CountryName: debug << "CountryName"; break;
+    case QSslCertificate::LocalityName: debug << "LocalityName"; break;
+    case QSslCertificate::OrganizationalUnitName: debug << "OrganizationalUnitName"; break;
+    case QSslCertificate::StateOrProvinceName: debug << "StateOrProvinceName"; break;
+    }
+    return debug;
+}
+#endif
+
+QT_END_NAMESPACE