Long live Qt 4.5!

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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 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 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 "qnetworkaccessmanager.h"
+#include "qnetworkaccessmanager_p.h"
+#include "qnetworkrequest.h"
+#include "qnetworkreply.h"
+#include "qnetworkreply_p.h"
+#include "qnetworkcookie.h"
+#include "qabstractnetworkcache.h"
+
+#include "qnetworkaccesshttpbackend_p.h"
+#include "qnetworkaccessftpbackend_p.h"
+#include "qnetworkaccessfilebackend_p.h"
+#include "qnetworkaccessdatabackend_p.h"
+#include "qnetworkaccessdebugpipebackend_p.h"
+
+#include "QtCore/qbuffer.h"
+#include "QtCore/qurl.h"
+#include "QtCore/qvector.h"
+#include "QtNetwork/qauthenticator.h"
+#include "QtNetwork/qsslconfiguration.h"
+
+QT_BEGIN_NAMESPACE
+
+#ifndef QT_NO_HTTP
+Q_GLOBAL_STATIC(QNetworkAccessHttpBackendFactory, httpBackend)
+#endif // QT_NO_HTTP
+Q_GLOBAL_STATIC(QNetworkAccessFileBackendFactory, fileBackend)
+Q_GLOBAL_STATIC(QNetworkAccessDataBackendFactory, dataBackend)
+#ifndef QT_NO_FTP
+Q_GLOBAL_STATIC(QNetworkAccessFtpBackendFactory, ftpBackend)
+#endif // QT_NO_FTP
+
+#ifdef QT_BUILD_INTERNAL
+Q_GLOBAL_STATIC(QNetworkAccessDebugPipeBackendFactory, debugpipeBackend)
+#endif
+
+static void ensureInitialized()
+{
+#ifndef QT_NO_HTTP
+    (void) httpBackend();
+#endif // QT_NO_HTTP
+    (void) dataBackend();
+#ifndef QT_NO_FTP
+    (void) ftpBackend();
+#endif
+
+#ifdef QT_BUILD_INTERNAL
+    (void) debugpipeBackend();
+#endif
+
+    // leave this one last since it will query the special QAbstractFileEngines
+    (void) fileBackend();
+}
+
+/*!
+    \class QNetworkAccessManager
+    \brief The QNetworkAccessManager class allows the application to
+    post network requests and receive replies
+    \since 4.4
+
+    \inmodule QtNetwork
+    \reentrant
+
+    The Network Access API is constructed around one QNetworkAccessManager
+    object, which holds the common configuration and settings for the requests
+    it sends. It contains the proxy and cache configuration, as well as the
+    signals related to such issues, and reply signals that can be used to
+    monitor the progress of a network operation.
+
+    Once a QNetworkAccessManager object has been created, the application can
+    use it to send requests over the network. A group of standard functions
+    are supplied that take a request and optional data, and each return a
+    QNetworkReply object. The returned object is used to obtain any data
+    returned in response to the corresponding request.
+    the reply to is where most of the signals as well
+    as the downloaded data are posted.
+
+    A simple download off the network could be accomplished with:
+    \snippet doc/src/snippets/code/src_network_access_qnetworkaccessmanager.cpp 0
+
+    When the \tt replyFinished slot above is called, the parameter it
+    takes is the QNetworkReply object containing the downloaded data
+    as well as meta-data (headers, etc.).
+
+    \note The slot is responsible for deleting the object at that point.
+
+    A more involved example, assuming the manager is already existent,
+    can be:
+    \snippet doc/src/snippets/code/src_network_access_qnetworkaccessmanager.cpp 1
+
+    \sa QNetworkRequest, QNetworkReply, QNetworkProxy
+*/
+
+/*!
+    \enum QNetworkAccessManager::Operation
+
+    Indicates the operation this reply is processing.
+
+    \value HeadOperation        retrieve headers operation (created
+    with head())
+
+    \value GetOperation         retrieve headers and download contents
+    (created with get())
+
+    \value PutOperation         upload contents operation (created
+    with put())
+
+    \value PostOperation        send the contents of an HTML form for
+    processing via HTTP POST (created with post())
+
+    \omitvalue UnknownOperation
+
+    \sa QNetworkReply::operation()
+*/
+
+/*!
+    \fn void QNetworkAccessManager::proxyAuthenticationRequired(const QNetworkProxy &proxy, QAuthenticator *authenticator)
+
+    This signal is emitted whenever a proxy requests authentication
+    and QNetworkAccessManager cannot find a valid, cached
+    credential. The slot connected to this signal should fill in the
+    credentials for the proxy \a proxy in the \a authenticator object.
+
+    QNetworkAccessManager will cache the credentials internally. The
+    next time the proxy requests authentication, QNetworkAccessManager
+    will automatically send the same credential without emitting the
+    proxyAuthenticationRequired signal again.
+
+    If the proxy rejects the credentials, QNetworkAccessManager will
+    emit the signal again.
+
+    \sa proxy(), setProxy(), authenticationRequired()
+*/
+
+/*!
+    \fn void QNetworkAccessManager::authenticationRequired(QNetworkReply *reply, QAuthenticator *authenticator)
+
+    This signal is emitted whenever a final server requests
+    authentication before it delivers the requested contents. The slot
+    connected to this signal should fill the credentials for the
+    contents (which can be determined by inspecting the \a reply
+    object) in the \a authenticator object.
+
+    QNetworkAccessManager will cache the credentials internally and
+    will send the same values if the server requires authentication
+    again, without emitting the authenticationRequired() signal. If it
+    rejects the credentials, this signal will be emitted again.
+
+    \sa proxyAuthenticationRequired()
+*/
+
+/*!
+    \fn void QNetworkAccessManager::finished(QNetworkReply *reply)
+
+    This signal is emitted whenever a pending network reply is
+    finished. The \a reply parameter will contain a pointer to the
+    reply that has just finished. This signal is emitted in tandem
+    with the QNetworkReply::finished() signal.
+
+    See QNetworkReply::finished() for information on the status that
+    the object will be in.
+
+    \sa QNetworkReply::finished(), QNetworkReply::error()
+*/
+
+/*!
+    \fn void QNetworkAccessManager::sslErrors(QNetworkReply *reply, const QList<QSslError> &errors)
+
+    This signal is emitted if the SSL/TLS session encountered errors
+    during the set up, including certificate verification errors. The
+    \a errors parameter contains the list of errors and \a reply is
+    the QNetworkReply that is encountering these errors.
+
+    To indicate that the errors are not fatal and that the connection
+    should proceed, the QNetworkReply::ignoreSslErrors() function should be called
+    from the slot connected to this signal. If it is not called, the
+    SSL session will be torn down before any data is exchanged
+    (including the URL).
+
+    This signal can be used to display an error message to the user
+    indicating that security may be compromised and display the
+    SSL settings (see sslConfiguration() to obtain it). If the user
+    decides to proceed after analyzing the remote certificate, the
+    slot should call ignoreSslErrors().
+
+    \sa QSslSocket::sslErrors(), QNetworkReply::sslErrors(),
+    QNetworkReply::sslConfiguration(), QNetworkReply::ignoreSslErrors()
+*/
+
+class QNetworkAuthenticationCredential
+{
+public:
+    QString domain;
+    QString user;
+    QString password;
+};
+Q_DECLARE_TYPEINFO(QNetworkAuthenticationCredential, Q_MOVABLE_TYPE);
+inline bool operator<(const QNetworkAuthenticationCredential &t1, const QString &t2)
+{ return t1.domain < t2; }
+
+class QNetworkAuthenticationCache: private QVector<QNetworkAuthenticationCredential>,
+                                   public QNetworkAccessCache::CacheableObject
+{
+public:
+    QNetworkAuthenticationCache()
+    {
+        setExpires(false);
+        setShareable(true);
+        reserve(1);
+    }
+
+    QNetworkAuthenticationCredential *findClosestMatch(const QString &domain)
+    {
+        iterator it = qLowerBound(begin(), end(), domain);
+        if (it == end() && !isEmpty())
+            --it;
+        if (it == end() || !domain.startsWith(it->domain))
+            return 0;
+        return &*it;
+    }
+
+    void insert(const QString &domain, const QString &user, const QString &password)
+    {
+        QNetworkAuthenticationCredential *closestMatch = findClosestMatch(domain);
+        if (closestMatch && closestMatch->domain == domain) {
+            // we're overriding the current credentials
+            closestMatch->user = user;
+            closestMatch->password = password;
+        } else {
+            QNetworkAuthenticationCredential newCredential;
+            newCredential.domain = domain;
+            newCredential.user = user;
+            newCredential.password = password;
+
+            if (closestMatch)
+                QVector<QNetworkAuthenticationCredential>::insert(++closestMatch, newCredential);
+            else
+                QVector<QNetworkAuthenticationCredential>::insert(end(), newCredential);
+        }
+    }
+
+    virtual void dispose() { delete this; }
+};
+
+#ifndef QT_NO_NETWORKPROXY
+static QByteArray proxyAuthenticationKey(const QNetworkProxy &proxy, const QString &realm)
+{
+    QUrl key;
+
+    switch (proxy.type()) {
+    case QNetworkProxy::Socks5Proxy:
+        key.setScheme(QLatin1String("proxy-socks5"));
+        break;
+
+    case QNetworkProxy::HttpProxy:
+    case QNetworkProxy::HttpCachingProxy:
+        key.setScheme(QLatin1String("proxy-http"));
+        break;
+
+    case QNetworkProxy::FtpCachingProxy:
+        key.setScheme(QLatin1String("proxy-ftp"));
+
+    case QNetworkProxy::DefaultProxy:
+    case QNetworkProxy::NoProxy:
+        // shouldn't happen
+        return QByteArray();
+
+        // no default:
+        // let there be errors if a new proxy type is added in the future
+    }
+
+    if (key.scheme().isEmpty())
+        // proxy type not handled
+        return QByteArray();
+
+    key.setUserName(proxy.user());
+    key.setHost(proxy.hostName());
+    key.setPort(proxy.port());
+    key.setFragment(realm);
+    return "auth:" + key.toEncoded();
+}
+#endif
+
+static inline QByteArray authenticationKey(const QUrl &url, const QString &realm)
+{
+    QUrl copy = url;
+    copy.setFragment(realm);
+    return "auth:" + copy.toEncoded(QUrl::RemovePassword | QUrl::RemovePath | QUrl::RemoveQuery);
+}
+
+/*!
+    Constructs a QNetworkAccessManager object that is the center of
+    the Network Access API and sets \a parent as the parent object.
+*/
+QNetworkAccessManager::QNetworkAccessManager(QObject *parent)
+    : QObject(*new QNetworkAccessManagerPrivate, parent)
+{
+    ensureInitialized();
+}
+
+/*!
+    Destroys the QNetworkAccessManager object and frees up any
+    resources. Note that QNetworkReply objects that are returned from
+    this class have this object set as their parents, which means that
+    they will be deleted along with it if you don't call
+    QObject::setParent() on them.
+*/
+QNetworkAccessManager::~QNetworkAccessManager()
+{
+#ifndef QT_NO_NETWORKPROXY
+    delete d_func()->proxyFactory;
+#endif
+}
+
+#ifndef QT_NO_NETWORKPROXY
+/*!
+    Returns the QNetworkProxy that the requests sent using this
+    QNetworkAccessManager object will use. The default value for the
+    proxy is QNetworkProxy::DefaultProxy.
+
+    \sa setProxy(), setProxyFactory(), proxyAuthenticationRequired()
+*/
+QNetworkProxy QNetworkAccessManager::proxy() const
+{
+    return d_func()->proxy;
+}
+
+/*!
+    Sets the proxy to be used in future requests to be \a proxy. This
+    does not affect requests that have already been sent. The
+    proxyAuthenticationRequired() signal will be emitted if the proxy
+    requests authentication.
+
+    A proxy set with this function will be used for all requests
+    issued by QNetworkAccessManager. In some cases, it might be
+    necessary to select different proxies depending on the type of
+    request being sent or the destination host. If that's the case,
+    you should consider using setProxyFactory().
+
+    \sa proxy(), proxyAuthenticationRequired()
+*/
+void QNetworkAccessManager::setProxy(const QNetworkProxy &proxy)
+{
+    Q_D(QNetworkAccessManager);
+    delete d->proxyFactory;
+    d->proxy = proxy;
+    d->proxyFactory = 0;
+}
+
+/*!
+    \fn QNetworkProxyFactory *QNetworkAccessManager::proxyFactory() const
+    \since 4.5
+
+    Returns the proxy factory that this QNetworkAccessManager object
+    is using to determine the proxies to be used for requests.
+
+    Note that the pointer returned by this function is managed by
+    QNetworkAccessManager and could be deleted at any time.
+
+    \sa setProxyFactory(), proxy()
+*/
+QNetworkProxyFactory *QNetworkAccessManager::proxyFactory() const
+{
+    return d_func()->proxyFactory;
+}
+
+/*!
+    \since 4.5
+
+    Sets the proxy factory for this class to be \a factory. A proxy
+    factory is used to determine a more specific list of proxies to be
+    used for a given request, instead of trying to use the same proxy
+    value for all requests.
+
+    All queries sent by QNetworkAccessManager will have type
+    QNetworkProxyQuery::UrlRequest.
+
+    For example, a proxy factory could apply the following rules:
+    \list
+      \o if the target address is in the local network (for example,
+         if the hostname contains no dots or if it's an IP address in
+         the organization's range), return QNetworkProxy::NoProxy
+      \o if the request is FTP, return an FTP proxy
+      \o if the request is HTTP or HTTPS, then return an HTTP proxy
+      \o otherwise, return a SOCKSv5 proxy server
+    \endlist
+
+    The lifetime of the object \a factory will be managed by
+    QNetworkAccessManager. It will delete the object when necessary.
+
+    \note If a specific proxy is set with setProxy(), the factory will not
+    be used.
+
+    \sa proxyFactory(), setProxy(), QNetworkProxyQuery
+*/
+void QNetworkAccessManager::setProxyFactory(QNetworkProxyFactory *factory)
+{
+    Q_D(QNetworkAccessManager);
+    delete d->proxyFactory;
+    d->proxyFactory = factory;
+    d->proxy = QNetworkProxy();
+}
+#endif
+
+/*!
+    \since 4.5
+
+    Returns the cache that is used to store data obtained from the network.
+
+    \sa setCache()
+*/
+QAbstractNetworkCache *QNetworkAccessManager::cache() const
+{
+    Q_D(const QNetworkAccessManager);
+    return d->networkCache;
+}
+
+/*!
+    \since 4.5
+
+    Sets the manager's network cache to be the \a cache specified. The cache
+    is used for all requests dispatched by the manager.
+
+    Use this function to set the network cache object to a class that implements
+    additional features, like saving the cookies to permanent storage.
+
+    \note QNetworkAccessManager takes ownership of the \a cache object.
+
+    QNetworkAccessManager by default does not have a set cache.
+    Qt provides a simple disk cache, QNetworkDiskCache, which can be used.
+
+    \sa cache(), QNetworkRequest::CacheLoadControl
+*/
+void QNetworkAccessManager::setCache(QAbstractNetworkCache *cache)
+{
+    Q_D(QNetworkAccessManager);
+    if (d->networkCache != cache) {
+        delete d->networkCache;
+        d->networkCache = cache;
+        d->networkCache->setParent(this);
+    }
+}
+
+/*!
+    Returns the QNetworkCookieJar that is used to store cookies
+    obtained from the network as well as cookies that are about to be
+    sent.
+
+    \sa setCookieJar()
+*/
+QNetworkCookieJar *QNetworkAccessManager::cookieJar() const
+{
+    Q_D(const QNetworkAccessManager);
+    if (!d->cookieJar)
+        d->createCookieJar();
+    return d->cookieJar;
+}
+
+/*!
+    Sets the manager's cookie jar to be the \a cookieJar specified.
+    The cookie jar is used by all requests dispatched by the manager.
+
+    Use this function to set the cookie jar object to a class that
+    implements additional features, like saving the cookies to permanent
+    storage.
+
+    \note QNetworkAccessManager takes ownership of the \a cookieJar object.
+
+    QNetworkAccessManager will set the parent of the \a cookieJar
+    passed to itself, so that the cookie jar is deleted when this
+    object is deleted as well. If you want to share cookie jars
+    between different QNetworkAccessManager objects, you may want to
+    set the cookie jar's parent to 0 after calling this function.
+
+    QNetworkAccessManager by default does not implement any cookie
+    policy of its own: it accepts all cookies sent by the server, as
+    long as they are well formed and meet the minimum security
+    requirements (cookie domain matches the request's and cookie path
+    matches the request's). In order to implement your own security
+    policy, override the QNetworkCookieJar::cookiesForUrl() and
+    QNetworkCookieJar::setCookiesFromUrl() virtual functions. Those
+    functions are called by QNetworkAccessManager when it detects a
+    new cookie.
+
+    \sa cookieJar(), QNetworkCookieJar::cookiesForUrl(), QNetworkCookieJar::setCookiesFromUrl()
+*/
+void QNetworkAccessManager::setCookieJar(QNetworkCookieJar *cookieJar)
+{
+    Q_D(QNetworkAccessManager);
+    d->cookieJarCreated = true;
+    if (d->cookieJar != cookieJar) {
+        if (d->cookieJar && d->cookieJar->parent() == this)
+            delete d->cookieJar;
+        d->cookieJar = cookieJar;
+        d->cookieJar->setParent(this);
+    }
+}
+
+/*!
+    This function is used to post a request to obtain the network
+    headers for \a request. It takes its name after the HTTP request
+    associated (HEAD). It returns a new QNetworkReply object which
+    will contain such headers.
+*/
+QNetworkReply *QNetworkAccessManager::head(const QNetworkRequest &request)
+{
+    return d_func()->postProcess(createRequest(QNetworkAccessManager::HeadOperation, request));
+}
+
+/*!
+    This function is used to post a request to obtain the contents of
+    the target \a request. It will cause the contents to be
+    downloaded, along with the headers associated with it. It returns
+    a new QNetworkReply object opened for reading which emits its
+    QIODevice::readyRead() signal whenever new data arrives.
+
+    \sa post(), put()
+*/
+QNetworkReply *QNetworkAccessManager::get(const QNetworkRequest &request)
+{
+    return d_func()->postProcess(createRequest(QNetworkAccessManager::GetOperation, request));
+}
+
+/*!
+    This function is used to send an HTTP POST request to the
+    destination specified by \a request. The contents of the \a data
+    device will be uploaded to the server.
+
+    \a data must be opened for reading when this function is called
+    and must remain valid until the finished() signal is emitted for
+    this reply.
+
+    The returned QNetworkReply object will be open for reading and
+    will contain the reply sent by the server to the POST request.
+
+    Note: sending a POST request on protocols other than HTTP and
+    HTTPS is undefined and will probably fail.
+
+    \sa get(), put()
+*/
+QNetworkReply *QNetworkAccessManager::post(const QNetworkRequest &request, QIODevice *data)
+{
+    return d_func()->postProcess(createRequest(QNetworkAccessManager::PostOperation, request, data));
+}
+
+/*!
+    \overload
+    This function sends the contents of the \a data byte array to the
+    destination specified by \a request.
+*/
+QNetworkReply *QNetworkAccessManager::post(const QNetworkRequest &request, const QByteArray &data)
+{
+    QBuffer *buffer = new QBuffer;
+    buffer->setData(data);
+    buffer->open(QIODevice::ReadOnly);
+
+    QNetworkReply *reply = post(request, buffer);
+    buffer->setParent(reply);
+    return reply;
+}
+
+/*!
+    This function is used to upload the contents of \a data to the
+    destination \a request.
+
+    \a data must be opened for reading when this function is called
+    and must remain valid until the finished() signal is emitted for
+    this reply.
+
+    The returned QNetworkReply object will be open for reply, but
+    whether anything will be available for reading is protocol
+    dependent. For HTTP, the server may send a small HTML page
+    indicating the upload was successful (or not). Other protocols
+    will probably have content in their replies.
+
+    For HTTP, this request will send a PUT request, which most servers
+    do not allow. Form upload mechanisms, including that of uploading
+    files through HTML forms, use the POST mechanism.
+
+    \sa get(), post()
+*/
+QNetworkReply *QNetworkAccessManager::put(const QNetworkRequest &request, QIODevice *data)
+{
+    return d_func()->postProcess(createRequest(QNetworkAccessManager::PutOperation, request, data));
+}
+
+/*!
+    \overload
+    This function sends the contents of the \a data byte array to the
+    destination specified by \a request.
+*/
+QNetworkReply *QNetworkAccessManager::put(const QNetworkRequest &request, const QByteArray &data)
+{
+    QBuffer *buffer = new QBuffer;
+    buffer->setData(data);
+    buffer->open(QIODevice::ReadOnly);
+
+    QNetworkReply *reply = put(request, buffer);
+    buffer->setParent(reply);
+    return reply;
+}
+
+/*!
+    Returns a new QNetworkReply object to handle the operation \a op
+    and request \a req. The device \a outgoingData is always 0 for Get and
+    Head requests, but is the value passed to post() and put() in
+    those operations (the QByteArray variants will pass a QBuffer
+    object).
+
+    The default implementation calls QNetworkCookieJar::cookiesForUrl()
+    on the cookie jar set with setCookieJar() to obtain the cookies to
+    be sent to the remote server.
+
+    The returned object must be in an open state.
+*/
+QNetworkReply *QNetworkAccessManager::createRequest(QNetworkAccessManager::Operation op,
+                                                    const QNetworkRequest &req,
+                                                    QIODevice *outgoingData)
+{
+    Q_D(QNetworkAccessManager);
+    QNetworkRequest request = req;
+    if (!request.header(QNetworkRequest::ContentLengthHeader).isValid() &&
+        outgoingData && !outgoingData->isSequential()) {
+        // request has no Content-Length
+        // but the data that is outgoing is random-access
+        request.setHeader(QNetworkRequest::ContentLengthHeader, outgoingData->size());
+    }
+    if (d->cookieJar) {
+        QList<QNetworkCookie> cookies = d->cookieJar->cookiesForUrl(request.url());
+        if (!cookies.isEmpty())
+            request.setHeader(QNetworkRequest::CookieHeader, qVariantFromValue(cookies));
+    }
+
+    // first step: create the reply
+    QUrl url = request.url();
+    QNetworkReplyImpl *reply = new QNetworkReplyImpl(this);
+    QNetworkReplyImplPrivate *priv = reply->d_func();
+    priv->manager = this;
+
+    // second step: fetch cached credentials
+    QNetworkAuthenticationCredential *cred = d->fetchCachedCredentials(url);
+    if (cred) {
+        url.setUserName(cred->user);
+        url.setPassword(cred->password);
+        priv->urlForLastAuthentication = url;
+    }
+
+    // third step: setup the reply
+    priv->setup(op, request, outgoingData);
+    if (request.attribute(QNetworkRequest::CacheLoadControlAttribute, QNetworkRequest::PreferNetwork).toInt() !=
+        QNetworkRequest::AlwaysNetwork)
+        priv->setNetworkCache(d->networkCache);
+#ifndef QT_NO_NETWORKPROXY
+    QList<QNetworkProxy> proxyList = d->queryProxy(QNetworkProxyQuery(request.url()));
+    priv->proxyList = proxyList;
+#endif
+
+    // fourth step: find a backend
+    priv->backend = d->findBackend(op, request);
+    if (priv->backend) {
+        priv->backend->setParent(reply);
+        priv->backend->reply = priv;
+    }
+
+#ifndef QT_NO_OPENSSL
+    reply->setSslConfiguration(request.sslConfiguration());
+#endif
+    return reply;
+}
+
+void QNetworkAccessManagerPrivate::_q_replyFinished()
+{
+    Q_Q(QNetworkAccessManager);
+    QNetworkReply *reply = qobject_cast<QNetworkReply *>(q->sender());
+    if (reply)
+        emit q->finished(reply);
+}
+
+void QNetworkAccessManagerPrivate::_q_replySslErrors(const QList<QSslError> &errors)
+{
+#ifndef QT_NO_OPENSSL
+    Q_Q(QNetworkAccessManager);
+    QNetworkReply *reply = qobject_cast<QNetworkReply *>(q->sender());
+    if (reply)
+        emit q->sslErrors(reply, errors);
+#else
+    Q_UNUSED(errors);
+#endif
+}
+
+QNetworkReply *QNetworkAccessManagerPrivate::postProcess(QNetworkReply *reply)
+{
+    Q_Q(QNetworkAccessManager);
+    QNetworkReplyPrivate::setManager(reply, q);
+    q->connect(reply, SIGNAL(finished()), SLOT(_q_replyFinished()));
+#ifndef QT_NO_OPENSSL
+    /* In case we're compiled without SSL support, we don't have this signal and we need to
+     * avoid getting a connection error. */
+    q->connect(reply, SIGNAL(sslErrors(QList<QSslError>)), SLOT(_q_replySslErrors(QList<QSslError>)));
+#endif
+
+    return reply;
+}
+
+void QNetworkAccessManagerPrivate::createCookieJar() const
+{
+    if (!cookieJarCreated) {
+        // keep the ugly hack in here
+        QNetworkAccessManagerPrivate *that = const_cast<QNetworkAccessManagerPrivate *>(this);
+        that->cookieJarCreated = true;
+        that->cookieJar = new QNetworkCookieJar(that->q_func());
+    }
+}
+
+void QNetworkAccessManagerPrivate::authenticationRequired(QNetworkAccessBackend *backend,
+                                                          QAuthenticator *authenticator)
+{
+    Q_Q(QNetworkAccessManager);
+
+    // FIXME: Add support for domains (i.e., the leading path)
+    QUrl url = backend->reply->url;
+
+    // don't try the cache for the same URL twice in a row
+    // being called twice for the same URL means the authentication failed
+    if (url != backend->reply->urlForLastAuthentication) {
+        QNetworkAuthenticationCredential *cred = fetchCachedCredentials(url, authenticator);
+        if (cred) {
+            authenticator->setUser(cred->user);
+            authenticator->setPassword(cred->password);
+            backend->reply->urlForLastAuthentication = url;
+            return;
+        }
+    }
+
+    backend->reply->urlForLastAuthentication = url;
+    emit q->authenticationRequired(backend->reply->q_func(), authenticator);
+    addCredentials(url, authenticator);
+}
+
+#ifndef QT_NO_NETWORKPROXY
+void QNetworkAccessManagerPrivate::proxyAuthenticationRequired(QNetworkAccessBackend *backend,
+                                                               const QNetworkProxy &proxy,
+                                                               QAuthenticator *authenticator)
+{
+    Q_Q(QNetworkAccessManager);
+
+    if (proxy != backend->reply->lastProxyAuthentication) {
+        QNetworkAuthenticationCredential *cred = fetchCachedCredentials(proxy);
+        if (cred) {
+            authenticator->setUser(cred->user);
+            authenticator->setPassword(cred->password);
+            return;
+        }
+    }
+
+    backend->reply->lastProxyAuthentication = proxy;
+    emit q->proxyAuthenticationRequired(proxy, authenticator);
+    addCredentials(proxy, authenticator);
+}
+
+void QNetworkAccessManagerPrivate::addCredentials(const QNetworkProxy &p,
+                                                  const QAuthenticator *authenticator)
+{
+    Q_ASSERT(authenticator);
+    Q_ASSERT(p.type() != QNetworkProxy::DefaultProxy);
+    Q_ASSERT(p.type() != QNetworkProxy::NoProxy);
+
+    QString realm = authenticator->realm();
+    QNetworkProxy proxy = p;
+    proxy.setUser(authenticator->user());
+    // Set two credentials: one with the username and one without
+    do {
+        // Set two credentials actually: one with and one without the realm
+        do {
+            QByteArray cacheKey = proxyAuthenticationKey(proxy, realm);
+            if (cacheKey.isEmpty())
+                return;             // should not happen
+
+            QNetworkAuthenticationCache *auth = new QNetworkAuthenticationCache;
+            auth->insert(QString(), authenticator->user(), authenticator->password());
+            cache.addEntry(cacheKey, auth); // replace the existing one, if there's any
+
+            if (realm.isEmpty()) {
+                break;
+            } else {
+                realm.clear();
+            }
+        } while (true);
+
+        if (proxy.user().isEmpty())
+            break;
+        else
+            proxy.setUser(QString());
+    } while (true);
+}
+
+QNetworkAuthenticationCredential *
+QNetworkAccessManagerPrivate::fetchCachedCredentials(const QNetworkProxy &p,
+                                                     const QAuthenticator *authenticator)
+{
+    QNetworkProxy proxy = p;
+    if (proxy.type() == QNetworkProxy::DefaultProxy) {
+        proxy = QNetworkProxy::applicationProxy();
+    }
+    if (!proxy.password().isEmpty())
+        return 0;               // no need to set credentials if it already has them
+
+    QString realm;
+    if (authenticator)
+        realm = authenticator->realm();
+
+    QByteArray cacheKey = proxyAuthenticationKey(proxy, realm);
+    if (cacheKey.isEmpty())
+        return 0;
+    if (!cache.hasEntry(cacheKey))
+        return 0;
+
+    QNetworkAuthenticationCache *auth =
+        static_cast<QNetworkAuthenticationCache *>(cache.requestEntryNow(cacheKey));
+    QNetworkAuthenticationCredential *cred = auth->findClosestMatch(QString());
+    cache.releaseEntry(cacheKey);
+
+    // proxy cache credentials always have exactly one item
+    Q_ASSERT_X(cred, "QNetworkAccessManager",
+               "Internal inconsistency: found a cache key for a proxy, but it's empty");
+    return cred;
+}
+
+QList<QNetworkProxy> QNetworkAccessManagerPrivate::queryProxy(const QNetworkProxyQuery &query)
+{
+    QList<QNetworkProxy> proxies;
+    if (proxyFactory) {
+        proxies = proxyFactory->queryProxy(query);
+        if (proxies.isEmpty()) {
+            qWarning("QNetworkAccessManager: factory %p has returned an empty result set",
+                     proxyFactory);
+            proxies << QNetworkProxy::NoProxy;
+        }
+    } else if (proxy.type() == QNetworkProxy::DefaultProxy) {
+        // no proxy set, query the application
+        return QNetworkProxyFactory::proxyForQuery(query);
+    } else {
+        proxies << proxy;
+    }
+
+    return proxies;
+}
+#endif
+
+void QNetworkAccessManagerPrivate::addCredentials(const QUrl &url,
+                                                  const QAuthenticator *authenticator)
+{
+    Q_ASSERT(authenticator);
+    QString domain = QString::fromLatin1("/"); // FIXME: make QAuthenticator return the domain
+    QString realm = authenticator->realm();
+
+    // Set two credentials actually: one with and one without the username in the URL
+    QUrl copy = url;
+    copy.setUserName(authenticator->user());
+    do {
+        QByteArray cacheKey = authenticationKey(copy, realm);
+        if (cache.hasEntry(cacheKey)) {
+            QNetworkAuthenticationCache *auth =
+                static_cast<QNetworkAuthenticationCache *>(cache.requestEntryNow(cacheKey));
+            auth->insert(domain, authenticator->user(), authenticator->password());
+            cache.releaseEntry(cacheKey);
+        } else {
+            QNetworkAuthenticationCache *auth = new QNetworkAuthenticationCache;
+            auth->insert(domain, authenticator->user(), authenticator->password());
+            cache.addEntry(cacheKey, auth);
+        }
+
+        if (copy.userName().isEmpty()) {
+            break;
+        } else {
+            copy.setUserName(QString());
+        }
+    } while (true);
+}
+
+/*!
+    Fetch the credential data from the credential cache.
+
+    If auth is 0 (as it is when called from createRequest()), this will try to
+    look up with an empty realm. That fails in most cases for HTTP (because the
+    realm is seldom empty for HTTP challenges). In any case, QHttpNetworkConnection
+    never sends the credentials on the first attempt: it needs to find out what
+    authentication methods the server supports.
+
+    For FTP, realm is always empty.
+*/
+QNetworkAuthenticationCredential *
+QNetworkAccessManagerPrivate::fetchCachedCredentials(const QUrl &url,
+                                                     const QAuthenticator *authentication)
+{
+    if (!url.password().isEmpty())
+        return 0;               // no need to set credentials if it already has them
+
+    QString realm;
+    if (authentication)
+        realm = authentication->realm();
+
+    QByteArray cacheKey = authenticationKey(url, realm);
+    if (!cache.hasEntry(cacheKey))
+        return 0;
+
+    QNetworkAuthenticationCache *auth =
+        static_cast<QNetworkAuthenticationCache *>(cache.requestEntryNow(cacheKey));
+    QNetworkAuthenticationCredential *cred = auth->findClosestMatch(url.path());
+    cache.releaseEntry(cacheKey);
+    return cred;
+}
+
+void QNetworkAccessManagerPrivate::clearCache(QNetworkAccessManager *manager)
+{
+    manager->d_func()->cache.clear();
+}
+
+QT_END_NAMESPACE
+
+#include "moc_qnetworkaccessmanager.cpp"