1 /****************************************************************************

     2 **

     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

     4 ** All rights reserved.

     5 ** Contact: Nokia Corporation (qt-info@nokia.com)

     6 **

     7 ** This file is part of the QtNetwork module of the Qt Toolkit.

     8 **

     9 ** $QT_BEGIN_LICENSE:LGPL$

    10 ** No Commercial Usage

    11 ** This file contains pre-release code and may not be distributed.

    12 ** You may use this file in accordance with the terms and conditions

    13 ** contained in the Technology Preview License Agreement accompanying

    14 ** this package.

    15 **

    16 ** GNU Lesser General Public License Usage

    17 ** Alternatively, this file may be used under the terms of the GNU Lesser

    18 ** General Public License version 2.1 as published by the Free Software

    19 ** Foundation and appearing in the file LICENSE.LGPL included in the

    20 ** packaging of this file.  Please review the following information to

    21 ** ensure the GNU Lesser General Public License version 2.1 requirements

    22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

    23 **

    24 ** In addition, as a special exception, Nokia gives you certain additional

    25 ** rights.  These rights are described in the Nokia Qt LGPL Exception

    26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

    27 **

    28 ** If you have questions regarding the use of this file, please contact

    29 ** Nokia at qt-info@nokia.com.

    30 **

    31 **

    32 **

    33 **

    34 **

    35 **

    36 **

    37 **

    38 ** $QT_END_LICENSE$

    39 **

    40 ****************************************************************************/

    41 

    42 #include "qfilenetworkreply_p.h"

    43 

    44 #include "QtCore/qdatetime.h"

    45 #include <QtCore/QCoreApplication>

    46 #include <QtCore/QFileInfo>

    47 

    48 QT_BEGIN_NAMESPACE

    49 

    50 QFileNetworkReplyPrivate::QFileNetworkReplyPrivate()

    51     : QNetworkReplyPrivate(), realFileSize(0), finished(false)

    52 {

    53 }

    54 

    55 QFileNetworkReply::QFileNetworkReply(QObject *parent, const QNetworkRequest &req)

    56     : QNetworkReply(*new QFileNetworkReplyPrivate(), parent)

    57 {

    58     setRequest(req);

    59     setUrl(req.url());

    60     setOperation(QNetworkAccessManager::GetOperation);

    61     QMetaObject::invokeMethod(this, "_q_startOperation", Qt::QueuedConnection);

    62     QNetworkReply::open(QIODevice::ReadOnly);

    63 }

    64 

    65 QFileNetworkReply::~QFileNetworkReply()

    66 {

    67 }

    68 

    69 // This code is mostly inspired by QNetworkAccessFileBackend

    70 // We also use its translation context for error messages

    71 void QFileNetworkReplyPrivate::_q_startOperation()

    72 {

    73     Q_Q(QFileNetworkReply);

    74 

    75     QUrl url = q->url();

    76     if (url.host() == QLatin1String("localhost"))

    77         url.setHost(QString());

    78 

    79 #if !defined(Q_OS_WIN)

    80     // do not allow UNC paths on Unix

    81     if (!url.host().isEmpty()) {

    82         // we handle only local files

    83         QString msg = QCoreApplication::translate("QNetworkAccessFileBackend", "Request for opening non-local file %1").arg(url.toString());

    84         q->setError(QNetworkReply::ProtocolInvalidOperationError, msg);

    85         emit q->error(QNetworkReply::ProtocolInvalidOperationError);

    86         doFinished();

    87         return;

    88     }

    89 #endif

    90     if (url.path().isEmpty())

    91         url.setPath(QLatin1String("/"));

    92     q->setUrl(url);

    93 

    94 

    95     QString fileName = url.toLocalFile();

    96     if (fileName.isEmpty()) {

    97         fileName = url.toString(QUrl::RemoveAuthority | QUrl::RemoveFragment | QUrl::RemoveQuery);

    98     }

    99     realFile.setFileName(fileName);

   100 

   101     QFileInfo fi(realFile);

   102     if (fi.isDir()) {

   103         QString msg = QCoreApplication::translate("QNetworkAccessFileBackend", "Cannot open %1: Path is a directory").arg(url.toString());

   104         q->setError(QNetworkReply::ContentOperationNotPermittedError, msg);

   105         emit q->error(QNetworkReply::ContentOperationNotPermittedError);

   106         doFinished();

   107         return;

   108     }

   109 

   110     bool opened = realFile.open(QIODevice::ReadOnly | QIODevice::Unbuffered);

   111 

   112     // could we open the file?

   113     if (!opened) {

   114         QString msg = QCoreApplication::translate("QNetworkAccessFileBackend", "Error opening %1: %2")

   115                       .arg(realFile.fileName(), realFile.errorString());

   116 

   117         if (realFile.exists()) {

   118             q->setError(QNetworkReply::ContentAccessDenied, msg);

   119             emit q->error(QNetworkReply::ContentAccessDenied);

   120         } else {

   121             q->setError(QNetworkReply::ContentNotFoundError, msg);

   122             emit q->error(QNetworkReply::ContentNotFoundError);

   123         }

   124         doFinished();

   125         return;

   126     }

   127 

   128     realFileSize = fi.size();

   129     q->setHeader(QNetworkRequest::LastModifiedHeader, fi.lastModified());

   130     q->setHeader(QNetworkRequest::ContentLengthHeader, realFileSize);

   131 

   132     emit q->metaDataChanged();

   133     emit q->downloadProgress(realFileSize, realFileSize);

   134     emit q->readyRead();

   135     doFinished();

   136 }

   137 

   138 bool QFileNetworkReplyPrivate::isFinished() const

   139 {

   140     return finished;

   141 }

   142 

   143 void QFileNetworkReplyPrivate::doFinished()

   144 {

   145     Q_Q(QFileNetworkReply);

   146     finished = true;

   147     emit q->finished();

   148 }

   149 

   150 

   151 void QFileNetworkReply::close()

   152 {

   153     Q_D(QFileNetworkReply);

   154     QNetworkReply::close();

   155     d->realFile.close();

   156 

   157     if (!d->finished)

   158         d->doFinished();

   159 }

   160 

   161 void QFileNetworkReply::abort()

   162 {

   163     Q_D(QFileNetworkReply);

   164     QNetworkReply::close();

   165     d->realFile.close();

   166 

   167     if (!d->finished)

   168         d->doFinished();

   169 }

   170 

   171 qint64 QFileNetworkReply::bytesAvailable() const

   172 {

   173     Q_D(const QFileNetworkReply);

   174     return QNetworkReply::bytesAvailable() + d->realFile.bytesAvailable();

   175 }

   176 

   177 bool QFileNetworkReply::isSequential () const

   178 {

   179     return true;

   180 }

   181 

   182 qint64 QFileNetworkReply::size() const

   183 {

   184     Q_D(const QFileNetworkReply);

   185     return d->realFileSize;

   186 }

   187 

   188 /*!

   189     \internal

   190 */

   191 qint64 QFileNetworkReply::readData(char *data, qint64 maxlen)

   192 {

   193     Q_D(QFileNetworkReply);

   194     qint64 ret = d->realFile.read(data, maxlen);

   195     if (ret == 0 && bytesAvailable() == 0)

   196         return -1; // everything had been read

   197     else

   198         return ret;

   199 }

   200 

   201 

   202 QT_END_NAMESPACE

   203 

   204 #include "moc_qfilenetworkreply_p.cpp"

   205