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

1 files changed, 579 insertions, 0 deletions

diff --git a/src/network/access/qhttpthreaddelegate.cpp b/src/network/access/qhttpthreaddelegate.cpp
new file mode 100644
index 0000000000..99f9376766
--- /dev/null
+++ b/src/network/access/qhttpthreaddelegate.cpp
@@ -0,0 +1,579 @@
+/****************************************************************************
+**
+** 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.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//#define QHTTPTHREADDELEGATE_DEBUG
+#include "qhttpthreaddelegate_p.h"
+
+#include <QThread>
+#include <QTimer>
+#include <QAuthenticator>
+#include <QEventLoop>
+
+#include "private/qhttpnetworkreply_p.h"
+#include "private/qnetworkaccesscache_p.h"
+#include "private/qnoncontiguousbytedevice_p.h"
+
+
+QT_BEGIN_NAMESPACE
+
+static QNetworkReply::NetworkError statusCodeFromHttp(int httpStatusCode, const QUrl &url)
+{
+    QNetworkReply::NetworkError code;
+    // we've got an error
+    switch (httpStatusCode) {
+    case 401:               // Authorization required
+        code = QNetworkReply::AuthenticationRequiredError;
+        break;
+
+    case 403:               // Access denied
+        code = QNetworkReply::ContentOperationNotPermittedError;
+        break;
+
+    case 404:               // Not Found
+        code = QNetworkReply::ContentNotFoundError;
+        break;
+
+    case 405:               // Method Not Allowed
+        code = QNetworkReply::ContentOperationNotPermittedError;
+        break;
+
+    case 407:
+        code = QNetworkReply::ProxyAuthenticationRequiredError;
+        break;
+
+    case 418:               // I'm a teapot
+        code = QNetworkReply::ProtocolInvalidOperationError;
+        break;
+
+
+    default:
+        if (httpStatusCode > 500) {
+            // some kind of server error
+            code = QNetworkReply::ProtocolUnknownError;
+        } else if (httpStatusCode >= 400) {
+            // content error we did not handle above
+            code = QNetworkReply::UnknownContentError;
+        } else {
+            qWarning("QNetworkAccess: got HTTP status code %d which is not expected from url: \"%s\"",
+                     httpStatusCode, qPrintable(url.toString()));
+            code = QNetworkReply::ProtocolFailure;
+        }
+    }
+
+    return code;
+}
+
+
+static QByteArray makeCacheKey(QUrl &url, QNetworkProxy *proxy)
+{
+    QByteArray result;
+    QUrl copy = url;
+    bool isEncrypted = copy.scheme().toLower() == QLatin1String("https");
+    copy.setPort(copy.port(isEncrypted ? 443 : 80));
+    result = copy.toEncoded(QUrl::RemoveUserInfo | QUrl::RemovePath |
+                            QUrl::RemoveQuery | QUrl::RemoveFragment);
+
+#ifndef QT_NO_NETWORKPROXY
+    if (proxy && proxy->type() != QNetworkProxy::NoProxy) {
+        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;
+
+        default:
+            break;
+        }
+
+        if (!key.scheme().isEmpty()) {
+            key.setUserName(proxy->user());
+            key.setHost(proxy->hostName());
+            key.setPort(proxy->port());
+            key.setEncodedQuery(result);
+            result = key.toEncoded();
+        }
+    }
+#else
+    Q_UNUSED(proxy)
+#endif
+
+    return "http-connection:" + result;
+}
+
+class QNetworkAccessCachedHttpConnection: public QHttpNetworkConnection,
+                                      public QNetworkAccessCache::CacheableObject
+{
+    // Q_OBJECT
+public:
+#ifdef QT_NO_BEARERMANAGEMENT
+    QNetworkAccessCachedHttpConnection(const QString &hostName, quint16 port, bool encrypt)
+        : QHttpNetworkConnection(hostName, port, encrypt)
+#else
+    QNetworkAccessCachedHttpConnection(const QString &hostName, quint16 port, bool encrypt, QSharedPointer<QNetworkSession> networkSession)
+        : QHttpNetworkConnection(hostName, port, encrypt, /*parent=*/0, networkSession)
+#endif
+    {
+        setExpires(true);
+        setShareable(true);
+    }
+
+    virtual void dispose()
+    {
+#if 0  // sample code; do this right with the API
+        Q_ASSERT(!isWorking());
+#endif
+        delete this;
+    }
+};
+
+
+QThreadStorage<QNetworkAccessCache *> QHttpThreadDelegate::connections;
+
+
+QHttpThreadDelegate::~QHttpThreadDelegate()
+{
+    // It could be that the main thread has asked us to shut down, so we need to delete the HTTP reply
+    if (httpReply) {
+        delete httpReply;
+    }
+
+    // Get the object cache that stores our QHttpNetworkConnection objects
+    // and release the entry for this QHttpNetworkConnection
+    if (connections.hasLocalData() && !cacheKey.isEmpty()) {
+        connections.localData()->releaseEntry(cacheKey);
+    }
+}
+
+
+QHttpThreadDelegate::QHttpThreadDelegate(QObject *parent) :
+    QObject(parent)
+    , ssl(false)
+    , downloadBufferMaximumSize(0)
+    , pendingDownloadData(0)
+    , pendingDownloadProgress(0)
+    , synchronous(false)
+    , incomingStatusCode(0)
+    , isPipeliningUsed(false)
+    , incomingContentLength(-1)
+    , incomingErrorCode(QNetworkReply::NoError)
+    , downloadBuffer(0)
+    , httpConnection(0)
+    , httpReply(0)
+    , synchronousRequestLoop(0)
+{
+}
+
+// This is invoked as BlockingQueuedConnection from QNetworkAccessHttpBackend in the user thread
+void QHttpThreadDelegate::startRequestSynchronously()
+{
+#ifdef QHTTPTHREADDELEGATE_DEBUG
+    qDebug() << "QHttpThreadDelegate::startRequestSynchronously() thread=" << QThread::currentThreadId();
+#endif
+    synchronous = true;
+
+    QEventLoop synchronousRequestLoop;
+    this->synchronousRequestLoop = &synchronousRequestLoop;
+
+    // Worst case timeout
+    QTimer::singleShot(30*1000, this, SLOT(abortRequest()));
+
+    QMetaObject::invokeMethod(this, "startRequest", Qt::QueuedConnection);
+    synchronousRequestLoop.exec();
+
+    connections.localData()->releaseEntry(cacheKey);
+    connections.setLocalData(0);
+
+#ifdef QHTTPTHREADDELEGATE_DEBUG
+    qDebug() << "QHttpThreadDelegate::startRequestSynchronously() thread=" << QThread::currentThreadId() << "finished";
+#endif
+}
+
+
+// This is invoked as QueuedConnection from QNetworkAccessHttpBackend in the user thread
+void QHttpThreadDelegate::startRequest()
+{
+#ifdef QHTTPTHREADDELEGATE_DEBUG
+    qDebug() << "QHttpThreadDelegate::startRequest() thread=" << QThread::currentThreadId();
+#endif
+    // Check QThreadStorage for the QNetworkAccessCache
+    // If not there, create this connection cache
+    if (!connections.hasLocalData()) {
+        connections.setLocalData(new QNetworkAccessCache());
+    }
+
+    // check if we have an open connection to this host
+    QUrl urlCopy = httpRequest.url();
+    urlCopy.setPort(urlCopy.port(ssl ? 443 : 80));
+
+#ifndef QT_NO_NETWORKPROXY
+    if (transparentProxy.type() != QNetworkProxy::NoProxy)
+        cacheKey = makeCacheKey(urlCopy, &transparentProxy);
+    else if (cacheProxy.type() != QNetworkProxy::NoProxy)
+        cacheKey = makeCacheKey(urlCopy, &cacheProxy);
+    else
+#endif
+        cacheKey = makeCacheKey(urlCopy, 0);
+
+
+    // the http object is actually a QHttpNetworkConnection
+    httpConnection = static_cast<QNetworkAccessCachedHttpConnection *>(connections.localData()->requestEntryNow(cacheKey));
+    if (httpConnection == 0) {
+        // no entry in cache; create an object
+        // the http object is actually a QHttpNetworkConnection
+#ifdef QT_NO_BEARERMANAGEMENT
+        httpConnection = new QNetworkAccessCachedHttpConnection(urlCopy.host(), urlCopy.port(), ssl);
+#else
+        httpConnection = new QNetworkAccessCachedHttpConnection(urlCopy.host(), urlCopy.port(), ssl, networkSession);
+#endif
+#ifndef QT_NO_OPENSSL
+        // Set the QSslConfiguration from this QNetworkRequest.
+        if (ssl && incomingSslConfiguration != QSslConfiguration::defaultConfiguration()) {
+            httpConnection->setSslConfiguration(incomingSslConfiguration);
+        }
+#endif
+
+#ifndef QT_NO_NETWORKPROXY
+        httpConnection->setTransparentProxy(transparentProxy);
+        httpConnection->setCacheProxy(cacheProxy);
+#endif
+
+        // cache the QHttpNetworkConnection corresponding to this cache key
+        connections.localData()->addEntry(cacheKey, httpConnection);
+    }
+
+
+    // Send the request to the connection
+    httpReply = httpConnection->sendRequest(httpRequest);
+    httpReply->setParent(this);
+
+    // Connect the reply signals that we need to handle and then forward
+    if (synchronous) {
+        connect(httpReply,SIGNAL(headerChanged()), this, SLOT(synchronousHeaderChangedSlot()));
+        connect(httpReply,SIGNAL(finished()), this, SLOT(synchronousFinishedSlot()));
+        connect(httpReply,SIGNAL(finishedWithError(QNetworkReply::NetworkError, const QString)),
+                this, SLOT(synchronousFinishedWithErrorSlot(QNetworkReply::NetworkError,QString)));
+
+        connect(httpReply, SIGNAL(authenticationRequired(QHttpNetworkRequest,QAuthenticator*)),
+                this, SLOT(synchronousAuthenticationRequiredSlot(QHttpNetworkRequest,QAuthenticator*)));
+        connect(httpReply, SIGNAL(proxyAuthenticationRequired(QNetworkProxy,QAuthenticator*)),
+                this, SLOT(synchronousProxyAuthenticationRequiredSlot(QNetworkProxy,QAuthenticator*)));
+
+        // Don't care about ignored SSL errors for now in the synchronous HTTP case.
+    } else if (!synchronous) {
+        connect(httpReply,SIGNAL(headerChanged()), this, SLOT(headerChangedSlot()));
+        connect(httpReply,SIGNAL(finished()), this, SLOT(finishedSlot()));
+        connect(httpReply,SIGNAL(finishedWithError(QNetworkReply::NetworkError, const QString)),
+                this, SLOT(finishedWithErrorSlot(QNetworkReply::NetworkError,QString)));
+        // some signals are only interesting when normal asynchronous style is used
+        connect(httpReply,SIGNAL(readyRead()), this, SLOT(readyReadSlot()));
+        connect(httpReply,SIGNAL(dataReadProgress(int, int)), this, SLOT(dataReadProgressSlot(int,int)));
+        connect(httpReply, SIGNAL(cacheCredentials(QHttpNetworkRequest,QAuthenticator*)),
+                this, SLOT(cacheCredentialsSlot(QHttpNetworkRequest,QAuthenticator*)));
+#ifndef QT_NO_OPENSSL
+        connect(httpReply,SIGNAL(sslErrors(const QList<QSslError>)), this, SLOT(sslErrorsSlot(QList<QSslError>)));
+#endif
+
+        // In the asynchronous HTTP case we can just forward those signals
+        // Connect the reply signals that we can directly forward
+        connect(httpReply, SIGNAL(authenticationRequired(QHttpNetworkRequest,QAuthenticator*)),
+                this, SIGNAL(authenticationRequired(QHttpNetworkRequest,QAuthenticator*)));
+        connect(httpReply, SIGNAL(proxyAuthenticationRequired(QNetworkProxy,QAuthenticator*)),
+                this, SIGNAL(proxyAuthenticationRequired(QNetworkProxy,QAuthenticator*)));
+    }
+}
+
+// This gets called from the user thread or by the synchronous HTTP timeout timer
+void QHttpThreadDelegate::abortRequest()
+{
+#ifdef QHTTPTHREADDELEGATE_DEBUG
+    qDebug() << "QHttpThreadDelegate::abortRequest() thread=" << QThread::currentThreadId() << "sync=" << synchronous;
+#endif
+    if (httpReply) {
+        delete httpReply;
+        httpReply = 0;
+    }
+
+    // Got aborted by the timeout timer
+    if (synchronous) {
+        incomingErrorCode = QNetworkReply::TimeoutError;
+        QMetaObject::invokeMethod(synchronousRequestLoop, "quit", Qt::QueuedConnection);
+    } else {
+        //only delete this for asynchronous mode or QNetworkAccessHttpBackend will crash - see QNetworkAccessHttpBackend::postRequest()
+        this->deleteLater();
+    }
+}
+
+void QHttpThreadDelegate::readyReadSlot()
+{
+    // Don't do in zerocopy case
+    if (!downloadBuffer.isNull())
+        return;
+
+    while (httpReply->readAnyAvailable()) {
+        pendingDownloadData->fetchAndAddRelease(1);
+        emit downloadData(httpReply->readAny());
+    }
+}
+
+void QHttpThreadDelegate::finishedSlot()
+{
+    if (!httpReply) {
+        qWarning() << "QHttpThreadDelegate::finishedSlot: HTTP reply had already been deleted, internal problem. Please report.";
+        return;
+    }
+#ifdef QHTTPTHREADDELEGATE_DEBUG
+    qDebug() << "QHttpThreadDelegate::finishedSlot() thread=" << QThread::currentThreadId() << "result=" << httpReply->statusCode();
+#endif
+
+    // If there is still some data left emit that now
+    while (httpReply->readAnyAvailable()) {
+        pendingDownloadData->fetchAndAddRelease(1);
+        emit downloadData(httpReply->readAny());
+    }
+
+#ifndef QT_NO_OPENSSL
+    if (ssl)
+        emit sslConfigurationChanged(httpReply->sslConfiguration());
+#endif
+
+    if (httpReply->statusCode() >= 400) {
+            // it's an error reply
+            QString msg = QLatin1String(QT_TRANSLATE_NOOP("QNetworkReply",
+                                                          "Error downloading %1 - server replied: %2"));
+            msg = msg.arg(QString::fromAscii(httpRequest.url().toEncoded()), httpReply->reasonPhrase());
+            emit error(statusCodeFromHttp(httpReply->statusCode(), httpRequest.url()), msg);
+        }
+
+    emit downloadFinished();
+
+    QMetaObject::invokeMethod(httpReply, "deleteLater", Qt::QueuedConnection);
+    QMetaObject::invokeMethod(this, "deleteLater", Qt::QueuedConnection);
+    httpReply = 0;
+}
+
+void QHttpThreadDelegate::synchronousFinishedSlot()
+{
+#ifdef QHTTPTHREADDELEGATE_DEBUG
+    qDebug() << "QHttpThreadDelegate::synchronousFinishedSlot() thread=" << QThread::currentThreadId() << "result=" << httpReply->statusCode();
+#endif
+    if (httpReply->statusCode() >= 400) {
+            // it's an error reply
+            QString msg = QLatin1String(QT_TRANSLATE_NOOP("QNetworkReply",
+                                                          "Error downloading %1 - server replied: %2"));
+            incomingErrorDetail = msg.arg(QString::fromAscii(httpRequest.url().toEncoded()), httpReply->reasonPhrase());
+            incomingErrorCode = statusCodeFromHttp(httpReply->statusCode(), httpRequest.url());
+    }
+
+    synchronousDownloadData = httpReply->readAll();
+
+    QMetaObject::invokeMethod(httpReply, "deleteLater", Qt::QueuedConnection);
+    QMetaObject::invokeMethod(synchronousRequestLoop, "quit", Qt::QueuedConnection);
+    httpReply = 0;
+}
+
+void QHttpThreadDelegate::finishedWithErrorSlot(QNetworkReply::NetworkError errorCode, const QString &detail)
+{
+    if (!httpReply) {
+        qWarning() << "QHttpThreadDelegate::finishedWithErrorSlot: HTTP reply had already been deleted, internal problem. Please report.";
+        return;
+    }
+#ifdef QHTTPTHREADDELEGATE_DEBUG
+    qDebug() << "QHttpThreadDelegate::finishedWithErrorSlot() thread=" << QThread::currentThreadId() << "error=" << errorCode << detail;
+#endif
+
+#ifndef QT_NO_OPENSSL
+    if (ssl)
+        emit sslConfigurationChanged(httpReply->sslConfiguration());
+#endif
+    emit error(errorCode,detail);
+    emit downloadFinished();
+
+
+    QMetaObject::invokeMethod(httpReply, "deleteLater", Qt::QueuedConnection);
+    QMetaObject::invokeMethod(this, "deleteLater", Qt::QueuedConnection);
+    httpReply = 0;
+}
+
+
+void QHttpThreadDelegate::synchronousFinishedWithErrorSlot(QNetworkReply::NetworkError errorCode, const QString &detail)
+{
+#ifdef QHTTPTHREADDELEGATE_DEBUG
+    qDebug() << "QHttpThreadDelegate::synchronousFinishedWithErrorSlot() thread=" << QThread::currentThreadId() << "error=" << errorCode << detail;
+#endif
+    incomingErrorCode = errorCode;
+    incomingErrorDetail = detail;
+
+    QMetaObject::invokeMethod(httpReply, "deleteLater", Qt::QueuedConnection);
+    QMetaObject::invokeMethod(synchronousRequestLoop, "quit", Qt::QueuedConnection);
+    httpReply = 0;
+}
+
+static void downloadBufferDeleter(char *ptr)
+{
+    delete[] ptr;
+}
+
+void QHttpThreadDelegate::headerChangedSlot()
+{
+#ifdef QHTTPTHREADDELEGATE_DEBUG
+    qDebug() << "QHttpThreadDelegate::headerChangedSlot() thread=" << QThread::currentThreadId();
+#endif
+
+#ifndef QT_NO_OPENSSL
+    if (ssl)
+        emit sslConfigurationChanged(httpReply->sslConfiguration());
+#endif
+
+    // Is using a zerocopy buffer allowed by user and possible with this reply?
+    if (httpReply->supportsUserProvidedDownloadBuffer()
+        && downloadBufferMaximumSize > 0) {
+        char *buf = new char[httpReply->contentLength()]; // throws if allocation fails
+        if (buf) {
+            downloadBuffer = QSharedPointer<char>(buf, downloadBufferDeleter);
+            httpReply->setUserProvidedDownloadBuffer(buf);
+        }
+    }
+
+    // We fetch this into our own
+    incomingHeaders = httpReply->header();
+    incomingStatusCode = httpReply->statusCode();
+    incomingReasonPhrase = httpReply->reasonPhrase();
+    isPipeliningUsed = httpReply->isPipeliningUsed();
+    incomingContentLength = httpReply->contentLength();
+
+    emit downloadMetaData(incomingHeaders,
+                          incomingStatusCode,
+                          incomingReasonPhrase,
+                          isPipeliningUsed,
+                          downloadBuffer,
+                          incomingContentLength);
+}
+
+void QHttpThreadDelegate::synchronousHeaderChangedSlot()
+{
+#ifdef QHTTPTHREADDELEGATE_DEBUG
+    qDebug() << "QHttpThreadDelegate::synchronousHeaderChangedSlot() thread=" << QThread::currentThreadId();
+#endif
+    // Store the information we need in this object, the QNetworkAccessHttpBackend will later read it
+    incomingHeaders = httpReply->header();
+    incomingStatusCode = httpReply->statusCode();
+    incomingReasonPhrase = httpReply->reasonPhrase();
+    isPipeliningUsed = httpReply->isPipeliningUsed();
+    incomingContentLength = httpReply->contentLength();
+}
+
+
+void QHttpThreadDelegate::dataReadProgressSlot(int done, int total)
+{
+    // If we don't have a download buffer don't attempt to go this codepath
+    // It is not used by QNetworkAccessHttpBackend
+    if (downloadBuffer.isNull())
+        return;
+
+    pendingDownloadProgress->fetchAndAddRelease(1);
+    emit downloadProgress(done, total);
+}
+
+void QHttpThreadDelegate::cacheCredentialsSlot(const QHttpNetworkRequest &request, QAuthenticator *authenticator)
+{
+    authenticationManager->cacheCredentials(request.url(), authenticator);
+}
+
+
+#ifndef QT_NO_OPENSSL
+void QHttpThreadDelegate::sslErrorsSlot(const QList<QSslError> &errors)
+{
+    emit sslConfigurationChanged(httpReply->sslConfiguration());
+
+    bool ignoreAll = false;
+    QList<QSslError> specificErrors;
+    emit sslErrors(errors, &ignoreAll, &specificErrors);
+    if (ignoreAll)
+        httpReply->ignoreSslErrors();
+    if (!specificErrors.isEmpty())
+        httpReply->ignoreSslErrors(specificErrors);
+}
+#endif
+
+void QHttpThreadDelegate::synchronousAuthenticationRequiredSlot(const QHttpNetworkRequest &request, QAuthenticator *a)
+{
+    Q_UNUSED(request);
+#ifdef QHTTPTHREADDELEGATE_DEBUG
+    qDebug() << "QHttpThreadDelegate::synchronousAuthenticationRequiredSlot() thread=" << QThread::currentThreadId();
+#endif
+
+    // Ask the credential cache
+    QNetworkAuthenticationCredential credential = authenticationManager->fetchCachedCredentials(httpRequest.url(), a);
+    if (!credential.isNull()) {
+        a->setUser(credential.user);
+        a->setPassword(credential.password);
+    }
+
+    // Disconnect this connection now since we only want to ask the authentication cache once.
+    QObject::disconnect(this, SLOT(synchronousAuthenticationRequiredSlot(QHttpNetworkRequest,QAuthenticator*)));
+}
+
+#ifndef QT_NO_NETWORKPROXY
+void  QHttpThreadDelegate::synchronousProxyAuthenticationRequiredSlot(const QNetworkProxy &p, QAuthenticator *a)
+{
+#ifdef QHTTPTHREADDELEGATE_DEBUG
+    qDebug() << "QHttpThreadDelegate::synchronousProxyAuthenticationRequiredSlot() thread=" << QThread::currentThreadId();
+#endif
+    // Ask the credential cache
+    QNetworkAuthenticationCredential credential = authenticationManager->fetchCachedProxyCredentials(p, a);
+    if (!credential.isNull()) {
+        a->setUser(credential.user);
+        a->setPassword(credential.password);
+    }
+
+    // Disconnect this connection now since we only want to ask the authentication cache once.
+    QObject::disconnect(this, SLOT(synchronousProxyAuthenticationRequiredSlot(QNetworkProxy,QAuthenticator*)));
+}
+
+#endif
+
+QT_END_NAMESPACE