Implement online mode: now qcma can connect to the Internet to check and download update files.

Update embedded xml file.
Updated translations.

qcma.pro

@@ -35,7 +35,8 @@ SOURCES += src/main.cpp \
     src/forms/configwidget.cpp \
     src/forms/confirmdialog.cpp \
     src/forms/pinform.cpp \
-    src/forms/progressform.cpp
+    src/forms/progressform.cpp \
+    src/httpdownloader.cpp
 
 HEADERS += \
     src/capability.h \
@@ -59,7 +60,8 @@ HEADERS += \
     src/forms/configwidget.h \
     src/forms/confirmdialog.h \
     src/forms/pinform.h \
-    src/forms/progressform.h
+    src/forms/progressform.h \
+    src/httpdownloader.h
 
 INCLUDEPATH += src/
 

resources/translations/qcma.es.ts

@@ -120,12 +120,12 @@
         <translation>No se pudo inicializar VitaMTP</translation>
     </message>
     <message>
-        <location filename="../../src/clientmanager.cpp" line="114"/>
+        <location filename="../../src/clientmanager.cpp" line="116"/>
         <source>Cannot refresh the database while is in use</source>
         <translation>No se puede actualizar la base de datos mientras se encuentre en uso</translation>
     </message>
     <message>
-        <location filename="../../src/clientmanager.cpp" line="116"/>
+        <location filename="../../src/clientmanager.cpp" line="118"/>
         <source>No PS Vita system has been registered</source>
         <translation>Nigún sistema PS Vita ha sido registrado</translation>
     </message>
@@ -239,37 +239,37 @@
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../../src/forms/configwidget.ui" line="240"/>
+        <location filename="../../src/forms/configwidget.ui" line="237"/>
         <source>Offline Mode</source>
-        <translation type="unfinished"></translation>
+        <translation>Modo desconectado</translation>
     </message>
     <message>
-        <location filename="../../src/forms/configwidget.ui" line="253"/>
+        <location filename="../../src/forms/configwidget.ui" line="250"/>
         <source>Skip metadata extraction</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../../src/forms/configwidget.ui" line="263"/>
+        <location filename="../../src/forms/configwidget.ui" line="260"/>
         <source>Update database automatically when files on the PC are changed</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../../src/forms/configwidget.ui" line="273"/>
+        <location filename="../../src/forms/configwidget.ui" line="270"/>
         <source>Disable USB monitoring</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../../src/forms/configwidget.ui" line="283"/>
+        <location filename="../../src/forms/configwidget.ui" line="280"/>
         <source>Disable Wi-Fi monitoring</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../../src/forms/configwidget.ui" line="292"/>
+        <location filename="../../src/forms/configwidget.ui" line="289"/>
         <source>Database backend</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../../src/forms/configwidget.ui" line="303"/>
+        <location filename="../../src/forms/configwidget.ui" line="300"/>
         <source>In Memory</source>
         <translation type="unfinished"></translation>
     </message>
@@ -322,6 +322,14 @@
         <translation>Filtro</translation>
     </message>
 </context>
+<context>
+    <name>HTTPDownloader</name>
+    <message>
+        <location filename="../../src/httpdownloader.cpp" line="154"/>
+        <source>Network error: %1</source>
+        <translation>Error de red: %1</translation>
+    </message>
+</context>
 <context>
     <name>MainWidget</name>
     <message>

resources/translations/qcma.ja.ts

@@ -120,12 +120,12 @@
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../../src/clientmanager.cpp" line="114"/>
+        <location filename="../../src/clientmanager.cpp" line="116"/>
         <source>Cannot refresh the database while is in use</source>
         <translation>使用中にはデータベースを更新できません</translation>
     </message>
     <message>
-        <location filename="../../src/clientmanager.cpp" line="116"/>
+        <location filename="../../src/clientmanager.cpp" line="118"/>
         <source>No PS Vita system has been registered</source>
         <translation type="unfinished"></translation>
     </message>
@@ -239,37 +239,37 @@
         <translation>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p align=&quot;center&quot;&gt;&lt;span style=&quot; font-size:14pt; font-weight:600;&quot;&gt;詳細設定&lt;/span&gt;&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</translation>
     </message>
     <message>
-        <location filename="../../src/forms/configwidget.ui" line="240"/>
+        <location filename="../../src/forms/configwidget.ui" line="237"/>
         <source>Offline Mode</source>
         <translation>オフラインモード</translation>
     </message>
     <message>
-        <location filename="../../src/forms/configwidget.ui" line="253"/>
+        <location filename="../../src/forms/configwidget.ui" line="250"/>
         <source>Skip metadata extraction</source>
         <translation>メタデータの展開をスキップする</translation>
     </message>
     <message>
-        <location filename="../../src/forms/configwidget.ui" line="263"/>
+        <location filename="../../src/forms/configwidget.ui" line="260"/>
         <source>Update database automatically when files on the PC are changed</source>
         <translation>PCのファイルが変更された際にデータベースを自動的に更新する</translation>
     </message>
     <message>
-        <location filename="../../src/forms/configwidget.ui" line="273"/>
+        <location filename="../../src/forms/configwidget.ui" line="270"/>
         <source>Disable USB monitoring</source>
         <translation>USBの監視を無効にする</translation>
     </message>
     <message>
-        <location filename="../../src/forms/configwidget.ui" line="283"/>
+        <location filename="../../src/forms/configwidget.ui" line="280"/>
         <source>Disable Wi-Fi monitoring</source>
         <translation>Wi-Fiの監視を無効にする</translation>
     </message>
     <message>
-        <location filename="../../src/forms/configwidget.ui" line="292"/>
+        <location filename="../../src/forms/configwidget.ui" line="289"/>
         <source>Database backend</source>
         <translation>データベース保存</translation>
     </message>
     <message>
-        <location filename="../../src/forms/configwidget.ui" line="303"/>
+        <location filename="../../src/forms/configwidget.ui" line="300"/>
         <source>In Memory</source>
         <translation>メモリ内</translation>
     </message>
@@ -323,6 +323,14 @@
         <translation type="unfinished"></translation>
     </message>
 </context>
+<context>
+    <name>HTTPDownloader</name>
+    <message>
+        <location filename="../../src/httpdownloader.cpp" line="154"/>
+        <source>Network error: %1</source>
+        <translation type="unfinished"></translation>
+    </message>
+</context>
 <context>
     <name>MainWidget</name>
     <message>

resources/xml/psp2-updatelist.xml

@@ -2,38 +2,83 @@
 <update_data_list>
 <region id="au">
     <np level0_system_version="00.000.000" level1_system_version="00.000.000" level2_system_version="00.000.000" map="00.000.000" />
-    <version system_version="00.000.000" label="0.00"></version>
+    <np_d level0_system_version="00.000.000" level1_system_version="00.000.000" level2_system_version="00.000.000" map="00.000.000" />
+    <version system_version="00.000.000" label="0.00">
+      <update_data update_type="full">
+        <image size="0">http://www.example.com/PSP2UPDAT.PUP</image>
+      </update_data>
+    </version>
 </region>
 <region id="eu">
     <np level0_system_version="00.000.000" level1_system_version="00.000.000" level2_system_version="00.000.000" map="00.000.000" />
-    <version system_version="00.000.000" label="0.00"></version>
+    <np_d level0_system_version="00.000.000" level1_system_version="00.000.000" level2_system_version="00.000.000" map="00.000.000" />
+    <version system_version="00.000.000" label="0.00">
+      <update_data update_type="full">
+        <image size="0">http://www.example.com/PSP2UPDAT.PUP</image>
+      </update_data>
+    </version>
 </region>
 <region id="jp">
     <np level0_system_version="00.000.000" level1_system_version="00.000.000" level2_system_version="00.000.000" map="00.000.000" />
-    <version system_version="00.000.000" label="0.00"></version>
+    <np_d level0_system_version="00.000.000" level1_system_version="00.000.000" level2_system_version="00.000.000" map="00.000.000" />
+    <version system_version="00.000.000" label="0.00">
+      <update_data update_type="full">
+        <image size="0">http://www.example.com/PSP2UPDAT.PUP</image>
+      </update_data>
+    </version>
 </region>
 <region id="kr">
     <np level0_system_version="00.000.000" level1_system_version="00.000.000" level2_system_version="00.000.000" map="00.000.000" />
-    <version system_version="00.000.000" label="0.00"></version>
+    <np_d level0_system_version="00.000.000" level1_system_version="00.000.000" level2_system_version="00.000.000" map="00.000.000" />
+    <version system_version="00.000.000" label="0.00">
+      <update_data update_type="full">
+        <image size="0">http://www.example.com/PSP2UPDAT.PUP</image>
+      </update_data>
+    </version>
 </region>
 <region id="mx">
     <np level0_system_version="00.000.000" level1_system_version="00.000.000" level2_system_version="00.000.000" map="00.000.000" />
-    <version system_version="00.000.000" label="0.00"></version>
+    <np_d level0_system_version="00.000.000" level1_system_version="00.000.000" level2_system_version="00.000.000" map="00.000.000" />
+    <version system_version="00.000.000" label="0.00">
+      <update_data update_type="full">
+        <image size="0">http://www.example.com/PSP2UPDAT.PUP</image>
+      </update_data>
+    </version>
 </region>
 <region id="ru">
     <np level0_system_version="00.000.000" level1_system_version="00.000.000" level2_system_version="00.000.000" map="00.000.000" />
-    <version system_version="00.000.000" label="0.00"></version>
+    <np_d level0_system_version="00.000.000" level1_system_version="00.000.000" level2_system_version="00.000.000" map="00.000.000" />
+    <version system_version="00.000.000" label="0.00">
+      <update_data update_type="full">
+        <image size="0">http://www.example.com/PSP2UPDAT.PUP</image>
+      </update_data>
+    </version>
 </region>
 <region id="tw">
     <np level0_system_version="00.000.000" level1_system_version="00.000.000" level2_system_version="00.000.000" map="00.000.000" />
-    <version system_version="00.000.000" label="0.00"></version>
+    <np_d level0_system_version="00.000.000" level1_system_version="00.000.000" level2_system_version="00.000.000" map="00.000.000" />
+    <version system_version="00.000.000" label="0.00">
+      <update_data update_type="full">
+        <image size="0">http://www.example.com/PSP2UPDAT.PUP</image>
+      </update_data>
+    </version>
 </region>
 <region id="uk">
     <np level0_system_version="00.000.000" level1_system_version="00.000.000" level2_system_version="00.000.000" map="00.000.000" />
-    <version system_version="00.000.000" label="0.00"></version>
+    <np_d level0_system_version="00.000.000" level1_system_version="00.000.000" level2_system_version="00.000.000" map="00.000.000" />
+    <version system_version="00.000.000" label="0.00">
+      <update_data update_type="full">
+        <image size="0">http://www.example.com/PSP2UPDAT.PUP</image>
+      </update_data>
+    </version>
 </region>
 <region id="us">
     <np level0_system_version="00.000.000" level1_system_version="00.000.000" level2_system_version="00.000.000" map="00.000.000" />
-    <version system_version="00.000.000" label="0.00"></version>
+    <np_d level0_system_version="00.000.000" level1_system_version="00.000.000" level2_system_version="00.000.000" map="00.000.000" />
+    <version system_version="00.000.000" label="0.00">
+      <update_data update_type="full">
+        <image size="0">http://www.example.com/PSP2UPDAT.PUP</image>
+      </update_data>
+    </version>
 </region>
 </update_data_list>

src/clientmanager.cpp

@@ -73,6 +73,7 @@ void ClientManager::start()
     client = new CmaClient();
     usb_thread->setObjectName("usb_thread");
     connect(usb_thread, SIGNAL(started()), client, SLOT(connectUsb()));
+    connect(client, SIGNAL(messageSent(QString)), this, SIGNAL(messageSent(QString)));
     connect(client, SIGNAL(finished()), usb_thread, SLOT(quit()), Qt::DirectConnection);
     connect(usb_thread, SIGNAL(finished()), usb_thread, SLOT(deleteLater()));
     connect(usb_thread, SIGNAL(finished()), this, SLOT(threadStopped()));
@@ -90,6 +91,7 @@ void ClientManager::start()
     client = new CmaClient();
     wireless_thread->setObjectName("wireless_thread");
     connect(wireless_thread, SIGNAL(started()), client, SLOT(connectWireless()));
+    connect(client, SIGNAL(messageSent(QString)), this, SIGNAL(messageSent(QString)));
     connect(client, SIGNAL(receivedPin(QString,int)), this, SLOT(showPinDialog(QString,int)));
     connect(client, SIGNAL(finished()), wireless_thread, SLOT(quit()), Qt::DirectConnection);
     connect(wireless_thread, SIGNAL(finished()), wireless_thread, SLOT(deleteLater()));

src/cmaclient.cpp

@@ -193,6 +193,7 @@ void CmaClient::enterEventLoop(vita_device_t *device)
     connect(&thread, SIGNAL(started()), &eventLoop, SLOT(process()));
     connect(&eventLoop, SIGNAL(refreshDatabase()), this, SIGNAL(refreshDatabase()), Qt::DirectConnection);
     connect(&eventLoop, SIGNAL(finishedEventLoop()), &thread, SLOT(quit()), Qt::DirectConnection);
+    connect(&eventLoop, SIGNAL(messageSent(QString)), this, SIGNAL(messageSent(QString)), Qt::DirectConnection);
     thread.start();
 
     while(isActive()) {

src/cmaclient.h

@@ -73,6 +73,7 @@ signals:
     void pinComplete();
     void deviceDetected();
     void deviceConnected(QString);
+    void messageSent(QString);
     void deviceDisconnected();
     void refreshDatabase();
     void finished();

src/cmaevent.cpp

@@ -23,6 +23,7 @@
 #include <QDateTime>
 #include <QDebug>
 #include <QDir>
+#include <QNetworkAccessManager>
 #include <QSettings>
 #include <QUrl>
 
@@ -486,20 +487,51 @@ void CmaEvent::vitaEventSendHttpObjectFromURL(vita_event_t *event, int eventId)
     QFile file(QDir(urlpath).absoluteFilePath(basename));
 
     QByteArray data;
+    QSettings settings;
+
+    bool offlineMode = settings.value("offlineMode", true).toBool();
 
     if(!file.open(QIODevice::ReadOnly)) {
-        if(basename == "psp2-updatelist.xml") {
+        if(offlineMode && basename == "psp2-updatelist.xml") {
             qDebug("Found request for update list. Sending cached data");
             QFile res(":/main/resources/xml/psp2-updatelist.xml");
             res.open(QIODevice::ReadOnly);
             data = res.readAll();
+
+        } else if(!offlineMode) {
+            HTTPDownloader downloader(url);
+            QThread *http_thread = new QThread();
+            http_thread->setObjectName("http_thread");
+            connect(http_thread, SIGNAL(started()), &downloader, SLOT(downloadFile()));
+            connect(&downloader, SIGNAL(messageSent(QString)), SIGNAL(messageSent(QString)), Qt::DirectConnection);
+            downloader.moveToThread(http_thread);
+            http_thread->start();
+
+            int remote_size = (int)downloader.getFileSize();
+
+            if(remote_size != -1) {
+                // add the size of the file length to the total filesize
+                remote_size += 8;
+                qDebug("Sending %i bytes of data for HTTP request %s", remote_size, url);
+
+                if(VitaMTP_SendData_Callback(device, eventId, PTP_OC_VITA_SendHttpObjectFromURL, remote_size, HTTPDownloader::readCallback) != PTP_RC_OK) {
+                    qWarning("Failed to send HTTP object");
                 } else {
-            qWarning("Failed to download %s", url);
+                    VitaMTP_ReportResult(device, eventId, PTP_RC_OK);
+                }
+
+            } else {
+                qWarning("No valid content-length in header, aborting");
                 VitaMTP_ReportResult(device, eventId, PTP_RC_VITA_Failed_Download);
+            }
+
             free(url);
+            http_thread->quit();
+            http_thread->deleteLater();
             return;
         }
     } else {
+        qDebug("Reading from local file");
         data = file.readAll();
     }
 
@@ -913,18 +945,18 @@ void CmaEvent::vitaEventCheckExistance(vita_event_t *event, int eventId)
     VitaMTP_ReportResult(device, eventId, PTP_RC_OK);
 }
 
-int CmaEvent::readCallback(unsigned char *data, unsigned long wantlen, unsigned long *gotlen)
+int CmaEvent::readCallback(unsigned char *data, int64_t wantlen, int64_t *gotlen)
 {
-    QByteArray qdata = m_file->read(wantlen);
+    *gotlen = m_file->read((char *)data, wantlen);
-    *gotlen = qdata.size();
+
-    if(*gotlen) {
+    if(*gotlen == -1) {
-        memcpy(data, qdata.constData(), qdata.size());
+        return -1;
     }
 
     return PTP_RC_OK;
 }
 
-int CmaEvent::writeCallback(const unsigned char *data, unsigned long size, unsigned long *written)
+int CmaEvent::writeCallback(const unsigned char *data, int64_t size, int64_t *written)
 {
     int ret = m_file->write((const char *)data, size);
     if(ret != -1) {

src/cmaevent.h

@@ -22,7 +22,9 @@
 
 #include "cmaobject.h"
 #include "database.h"
+#include "httpdownloader.h"
 
+#include <QNetworkReply>
 #include <QObject>
 #include <QSemaphore>
 
@@ -61,8 +63,9 @@ private:
     void vitaEventSendObjectMetadataItems(vita_event_t *event, int eventId);
     void vitaEventSendNPAccountInfo(vita_event_t *event, int eventId);
 
-    static int readCallback(unsigned char *data, unsigned long wantlen, unsigned long *gotlen);
+    static int readCallback(unsigned char *data, int64_t wantlen, int64_t *gotlen);
-    static int writeCallback(const unsigned char *data, unsigned long size, unsigned long *written);
+    static int writeCallback(const unsigned char *data, int64_t size, int64_t *written);
+    static int readHTTPCallback(unsigned char *data, int64_t wantlen, int64_t *gotlen);
 
     void processEvent();
     bool isActive();
@@ -83,6 +86,7 @@ private:
 signals:
     void finishedEventLoop();
     void refreshDatabase();
+    void messageSent(QString);
 
 public slots:
     void process();

src/forms/configwidget.cpp

@@ -145,6 +145,7 @@ void ConfigWidget::accept()
     savePath(settings, ui->videoPath, "videoPath");
     savePath(settings, ui->appPath, "appsPath");
     savePath(settings, ui->urlPath, "urlPath");
+    settings.setValue("offlineMode", ui->offlineCheck->isChecked());
     settings.sync();
     done(Accepted);
 }

src/forms/configwidget.ui

@@ -232,10 +232,7 @@
             </widget>
            </item>
            <item>
-            <widget class="QCheckBox" name="checkBox">
+            <widget class="QCheckBox" name="offlineCheck">
-             <property name="enabled">
-              <bool>false</bool>
-             </property>
              <property name="text">
               <string>Offline Mode</string>
              </property>

src/httpdownloader.cpp

@@ -0,0 +1,161 @@
+/*
+ *  QCMA: Cross-platform content manager assistant for the PS Vita
+ *
+ *  Copyright (C) 2014  Codestation
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "httpdownloader.h"
+
+#include <QThread>
+
+#include <inttypes.h>
+#include <vitamtp.h>
+
+QNetworkReply *HTTPDownloader::reply = NULL;
+volatile qint64 HTTPDownloader::m_contentLength = -1;
+
+QMutex HTTPDownloader::dataAvailable;
+QMutex HTTPDownloader::dataRead;
+
+char *HTTPDownloader::buffer = NULL;
+qint64 HTTPDownloader::bufferSize = 0;
+qint64 HTTPDownloader::downloadLeft = 0;
+
+HTTPDownloader::HTTPDownloader(const QString &url, QObject *parent) :
+    QObject(parent), remote_url(url), firstRead(true)
+{
+    lengthMutex.lock();
+}
+
+HTTPDownloader::~HTTPDownloader()
+{
+    lengthMutex.unlock();
+    free(buffer);
+}
+
+void HTTPDownloader::downloadFile()
+{
+    dataAvailable.lock();
+    qDebug("Starting http_thread: 0x%016" PRIxPTR, (uintptr_t)QThread::currentThreadId());
+    request = new QNetworkAccessManager(this);
+    reply = request->get(QNetworkRequest(QUrl(remote_url)));
+    connect(reply, SIGNAL(metaDataChanged()), this, SLOT(metadataChanged()));
+    connect(reply, SIGNAL(readyRead()), this, SLOT(readyRead()));
+    connect(reply, SIGNAL(error(QNetworkReply::NetworkError)),
+            this, SLOT(error(QNetworkReply::NetworkError)));
+    connect(reply, SIGNAL(finished()), reply, SLOT(deleteLater()));
+    connect(reply, SIGNAL(finished()), request, SLOT(deleteLater()));
+}
+
+void HTTPDownloader::metadataChanged()
+{
+    QVariant len = reply->header(QNetworkRequest::ContentLengthHeader);
+    if(len.isValid()) {
+        m_contentLength = len.toInt();
+        downloadLeft = m_contentLength + 8;
+    } else {
+        m_contentLength = -1;
+    }
+    lengthMutex.unlock();
+}
+
+qint64 HTTPDownloader::getFileSize()
+{
+    lengthMutex.lock();
+    return m_contentLength;
+}
+
+void HTTPDownloader::readyRead()
+{
+    dataRead.lock();
+
+    int currOffset = bufferSize;
+    if(bufferSize == 0) {
+        bufferSize = reply->bytesAvailable();
+        if(firstRead) {
+            bufferSize += 8;
+            currOffset += 8;
+        }
+        // start with a 16KiB buffer
+        buffer = (char *)malloc(16384 + 2048);
+        if(firstRead) {
+            *(uint64_t *)buffer = m_contentLength;
+            firstRead = false;
+        }
+
+    } else {
+        bufferSize += reply->bytesAvailable();
+        if(bufferSize > 16384 + 2048) {
+            buffer = (char *)realloc(buffer, bufferSize);
+        }
+    }
+    reply->read(buffer + currOffset, reply->bytesAvailable());
+
+    downloadLeft -= bufferSize;
+
+    if(bufferSize > 16384 || downloadLeft == 0) {
+        dataAvailable.unlock();
+    }
+    dataRead.unlock();
+}
+
+int HTTPDownloader::readCallback(unsigned char *data, int64_t wantlen, int64_t *gotlen)
+{
+    if(!dataAvailable.tryLock(30000)) {
+        qWarning("Connection timeout while receiving data from network, aborting");
+        return -1;
+    }
+
+    dataRead.lock();
+
+    if(bufferSize == 0) {
+        dataRead.unlock();
+        return -1;
+    }
+
+    if(bufferSize < wantlen) {
+        wantlen = bufferSize;
+    }
+
+    memcpy(data, buffer, wantlen);
+    bufferSize -= wantlen;
+    *gotlen = wantlen;
+
+    if(bufferSize > 0) {
+        memmove(buffer, buffer + wantlen, bufferSize);
+        if(bufferSize >= 16384 || downloadLeft == 0) {
+            dataAvailable.unlock();
+        }
+    }
+
+    *gotlen = wantlen;
+    dataRead.unlock();
+
+    return PTP_RC_OK;
+}
+
+void HTTPDownloader::error(QNetworkReply::NetworkError errorCode)
+{
+    Q_UNUSED(errorCode);
+
+    emit messageSent(tr("Network error: %1").arg(reply->errorString()));
+
+    // set buffer to zero so a read callback can be aborted
+    dataRead.lock();
+    bufferSize = 0;
+    dataRead.unlock();
+    lengthMutex.unlock();
+}

src/httpdownloader.h

@@ -0,0 +1,63 @@
+/*
+ *  QCMA: Cross-platform content manager assistant for the PS Vita
+ *
+ *  Copyright (C) 2014  Codestation
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef HTTPDOWNLOADER_H
+#define HTTPDOWNLOADER_H
+
+#include <QMutex>
+#include <QNetworkReply>
+#include <QObject>
+#include <QWaitCondition>
+
+class HTTPDownloader : public QObject
+{
+    Q_OBJECT
+public:
+    explicit HTTPDownloader(const QString &url, QObject *parent = 0);
+    ~HTTPDownloader();
+    qint64 getFileSize();
+
+signals:
+    void messageSent(QString);
+
+public slots:
+    void downloadFile();
+    static int readCallback(unsigned char *data, int64_t wantlen, int64_t *gotlen);
+    void metadataChanged();
+    void readyRead();
+    void error(QNetworkReply::NetworkError);
+
+private:
+    QString remote_url;
+    QNetworkAccessManager *request;
+    QMutex lengthMutex;
+    bool firstRead;
+
+    static QMutex dataAvailable;
+    static QMutex dataRead;
+
+    static QNetworkReply *reply;
+    volatile static qint64 m_contentLength;
+
+    static char *buffer;
+    static qint64 bufferSize;
+    static qint64 downloadLeft;
+};
+
+#endif // HTTPDOWNLOADER_H