Check for updates (newer version) at startup - for now only Ostinato does this check, not drone.

client/mainwindow.cpp

@@ -29,6 +29,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>
 #include "preferences.h"
 #include "settings.h"
 #include "ui_about.h"
+#include "updater.h"
 
 #include <QDockWidget>
 #include <QProcess>
@@ -42,6 +43,7 @@ MainWindow::MainWindow(QWidget *parent)
     : QMainWindow (parent)
 {
     QString serverApp = QCoreApplication::applicationDirPath();
+    Updater *updater = new Updater();
 
 #ifdef Q_OS_MAC
     // applicationDirPath() does not return bundle, but executable inside bundle
@@ -90,6 +92,10 @@ MainWindow::MainWindow(QWidget *parent)
 
     connect(actionFileExit, SIGNAL(triggered()), this, SLOT(close()));
     connect(actionAboutQt, SIGNAL(triggered()), qApp, SLOT(aboutQt()));
+
+    connect(updater, SIGNAL(newVersionAvailable(QString)), 
+            this, SLOT(onNewVersion(QString)));
+    updater->checkForNewVersion();
 #if 0
     {
         DbgThread *dbg = new DbgThread(pgl);
@@ -140,3 +146,8 @@ void MainWindow::on_actionHelpAbout_triggered()
     delete aboutDialog;
 }
 
+void MainWindow::onNewVersion(QString newVersion)
+{
+    statusBar()->showMessage(QString("New Ostinato version %1 available. "
+                "Visit http://ostinato.org to download").arg(newVersion));
+}

client/mainwindow.h

@@ -47,6 +47,9 @@ public:
 public slots:
     void on_actionPreferences_triggered();
     void on_actionHelpAbout_triggered();
+
+private slots:
+    void onNewVersion(QString version);
 };
 
 #endif

client/ostinato.pro

@@ -50,7 +50,8 @@ HEADERS += \
     settings.h \
     streamconfigdialog.h \
     streamlistdelegate.h \
-    streammodel.h 
+    streammodel.h \
+    updater.h
 
 FORMS += \
     about.ui \
@@ -81,7 +82,8 @@ SOURCES += \
     preferences.cpp \
     streamconfigdialog.cpp \
     streamlistdelegate.cpp \
-    streammodel.cpp 
+    streammodel.cpp \
+    updater.cpp
 
 
 QMAKE_DISTCLEAN += object_script.*

client/updater.cpp

@@ -0,0 +1,127 @@
+/*
+Copyright (C) 2015 Srivats P.
+
+This file is part of "Ostinato"
+
+This 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 "updater.h"
+
+#include <QHttp>
+#include <QTemporaryFile>
+#include <QXmlStreamReader>
+
+extern const char* version;
+
+Updater::Updater()
+{
+    http_ = NULL;
+    file_ = NULL;
+
+#if 1
+    // Tests!
+    Q_ASSERT(isVersionNewer("1.1", "1") == true);
+    Q_ASSERT(isVersionNewer("10.1", "2") == true);
+    Q_ASSERT(isVersionNewer("0.10", "0.2") == true);
+    Q_ASSERT(isVersionNewer("1.10.1", "1.2.3") == true);
+#endif
+}
+
+Updater::~Updater()
+{
+    delete http_;
+    delete file_;
+}
+
+void Updater::checkForNewVersion()
+{
+    http_ = new QHttp("wiki.ostinato.googlecode.com");
+    file_ = new QTemporaryFile();
+
+    connect(http_, SIGNAL(responseHeaderReceived(QHttpResponseHeader)), 
+            this, SLOT(responseReceived(QHttpResponseHeader)));
+    connect(http_, SIGNAL(requestFinished(int, bool)), 
+            this, SLOT(parseXml(int, bool)));
+    connect(http_, SIGNAL(stateChanged(int)), 
+            this, SLOT(stateUpdate(int)));
+
+    file_->open();
+    qDebug("Updater: PAD XML file - %s", qPrintable(file_->fileName()));
+
+    http_->get("/hg/html/pad.xml", file_);
+    qDebug("Updater: %s", qPrintable(http_->currentRequest().toString()
+                .replace("\r\n", "\nUpdater: ")));
+}
+
+void Updater::stateUpdate(int state)
+{
+    qDebug("Updater: state %d", state);
+}
+
+void Updater::responseReceived(QHttpResponseHeader response)
+{
+    qDebug("Updater: HTTP/%d.%d %d %s", 
+            response.majorVersion(), response.minorVersion(),
+            response.statusCode(), qPrintable(response.reasonPhrase()));
+}
+
+void Updater::parseXml(int id, bool error) 
+{
+    QXmlStreamReader xml;
+    QString newVersion;
+
+    if (error) {
+        qDebug("Updater: %s", qPrintable(http_->errorString()));
+        goto _exit;
+    }
+
+    // Close and reopen the file so that we read from the top
+    file_->close();
+    file_->open();
+    xml.setDevice(file_);
+
+    while (!xml.atEnd()) {
+        xml.readNext();
+        if (xml.isStartElement() && (xml.name() == "Program_Version"))
+            newVersion = xml.readElementText();
+    }
+
+    qDebug("Updater: latest version = %s", qPrintable(newVersion));
+    if (!newVersion.isEmpty() && isVersionNewer(newVersion, QString(version)))
+        emit newVersionAvailable(newVersion);
+
+_exit:
+    // Job done, time to self-destruct
+    deleteLater();
+}
+
+bool Updater::isVersionNewer(QString newVersion, QString curVersion)
+{
+    QStringList curVer = QString(curVersion).split('.');
+    QStringList newVer = QString(newVersion).split('.');
+
+    for (int i = 0; i < qMin(curVer.size(), newVer.size()); i++) {
+        bool isOk;
+        if (newVer.at(i).toUInt(&isOk) > curVer.at(i).toUInt(&isOk))
+            return true;
+    }
+    
+    if (newVer.size() > curVer.size())
+        return true;
+
+    return false;
+}
+
+

client/updater.h

@@ -0,0 +1,52 @@
+/*
+Copyright (C) 2015 Srivats P.
+
+This file is part of "Ostinato"
+
+This 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 _UPDATER_H
+#define _UPDATER_H
+
+#include <QHttpResponseHeader>
+#include <QString>
+
+class QHttp;
+class QTemporaryFile;
+
+class Updater : public QObject
+{
+    Q_OBJECT
+public:
+    Updater();
+    virtual ~Updater();
+    void checkForNewVersion();
+    static bool isVersionNewer(QString newVersion, QString curVersion);
+
+signals:
+    void newVersionAvailable(QString);
+
+private slots:
+    void stateUpdate(int state);
+    void responseReceived(QHttpResponseHeader response);
+    void parseXml(int id, bool error);
+
+private:
+    QHttp *http_;
+    QTemporaryFile *file_;
+};
+
+#endif
+