8 files changed, 1303 insertions, 0 deletions
diff --git a/tests/baselineserver/src/baselineserver.cpp b/tests/baselineserver/src/baselineserver.cpp
new file mode 100644
index 0000000000..6ff0a0c72d
--- /dev/null
+++ b/tests/baselineserver/src/baselineserver.cpp
@@ -0,0 +1,576 @@
+/****************************************************************************
+**
+** 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 test suite of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** 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.
+**
+** 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.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#define QT_USE_FAST_CONCATENATION
+#define QT_USE_FAST_OPERATOR_PLUS
+
+#include "baselineserver.h"
+#include <QBuffer>
+#include <QFile>
+#include <QDir>
+#include <QCoreApplication>
+#include <QFileInfo>
+#include <QHostInfo>
+#include <QTextStream>
+#include <QProcess>
+#include <QDirIterator>
+
+// extra fields, for use in image metadata storage
+const QString PI_ImageChecksum(QLS("ImageChecksum"));
+const QString PI_RunId(QLS("RunId"));
+const QString PI_CreationDate(QLS("CreationDate"));
+
+QString BaselineServer::storage;
+QString BaselineServer::url;
+QString BaselineServer::settingsFile;
+
+BaselineServer::BaselineServer(QObject *parent)
+    : QTcpServer(parent), lastRunIdIdx(0)
+{
+    QFileInfo me(QCoreApplication::applicationFilePath());
+    meLastMod = me.lastModified();
+    heartbeatTimer = new QTimer(this);
+    connect(heartbeatTimer, SIGNAL(timeout()), this, SLOT(heartbeat()));
+    heartbeatTimer->start(HEARTBEAT*1000);
+}
+
+QString BaselineServer::storagePath()
+{
+    if (storage.isEmpty()) {
+        storage = QLS(qgetenv("QT_LANCELOT_DIR"));
+        if (storage.isEmpty())
+            storage = QLS("/var/www");
+    }
+    return storage;
+}
+
+QString BaselineServer::baseUrl()
+{
+    if (url.isEmpty()) {
+        url = QLS("http://")
+                + QHostInfo::localHostName().toLatin1() + '.'
+                + QHostInfo::localDomainName().toLatin1() + '/';
+    }
+    return url;
+}
+
+QString BaselineServer::settingsFilePath()
+{
+    if (settingsFile.isEmpty()) {
+        QString exeName = QCoreApplication::applicationFilePath().section(QLC('/'), -1);
+        settingsFile = storagePath() + QLC('/') + exeName + QLS(".ini");
+    }
+    return settingsFile;
+}
+
+void BaselineServer::incomingConnection(int socketDescriptor)
+{
+    QString runId = QDateTime::currentDateTime().toString(QLS("MMMdd-hhmmss"));
+    if (runId == lastRunId) {
+        runId += QLC('-') + QString::number(++lastRunIdIdx);
+    } else {
+        lastRunId = runId;
+        lastRunIdIdx = 0;
+    }
+    qDebug() << "Server: New connection! RunId:" << runId;
+    BaselineThread *thread = new BaselineThread(runId, socketDescriptor, this);
+    connect(thread, SIGNAL(finished()), thread, SLOT(deleteLater()));
+    thread->start();
+}
+
+void BaselineServer::heartbeat()
+{
+    // The idea is to exit to be restarted when modified, as soon as not actually serving
+    QFileInfo me(QCoreApplication::applicationFilePath());
+    if (me.lastModified() == meLastMod)
+        return;
+    if (!me.exists() || !me.isExecutable())
+        return;
+
+    //# (could close() here to avoid accepting new connections, to avoid livelock)
+    //# also, could check for a timeout to force exit, to avoid hung threads blocking
+    bool isServing = false;
+    foreach(BaselineThread *thread, findChildren<BaselineThread *>()) {
+        if (thread->isRunning()) {
+            isServing = true;
+            break;
+        }
+    }
+
+    if (!isServing)
+        QCoreApplication::exit();
+}
+
+BaselineThread::BaselineThread(const QString &runId, int socketDescriptor, QObject *parent)
+    : QThread(parent), runId(runId), socketDescriptor(socketDescriptor)
+{
+}
+
+void BaselineThread::run()
+{
+    BaselineHandler handler(runId, socketDescriptor);
+    exec();
+}
+
+
+BaselineHandler::BaselineHandler(const QString &runId, int socketDescriptor)
+    : QObject(), runId(runId), connectionEstablished(false)
+{
+    settings = new QSettings(BaselineServer::settingsFilePath(), QSettings::IniFormat, this);
+
+    if (socketDescriptor == -1)
+        return;
+
+    connect(&proto.socket, SIGNAL(readyRead()), this, SLOT(receiveRequest()));
+    connect(&proto.socket, SIGNAL(disconnected()), this, SLOT(receiveDisconnect()));
+    proto.socket.setSocketDescriptor(socketDescriptor);
+}
+
+const char *BaselineHandler::logtime()
+{
+    return 0;
+    //return QTime::currentTime().toString(QLS("mm:ss.zzz"));
+}
+
+bool BaselineHandler::establishConnection()
+{
+    if (!proto.acceptConnection(&plat)) {
+        qWarning() << runId << logtime() << "Accepting new connection from" << proto.socket.peerAddress().toString() << "failed." << proto.errorMessage();
+        proto.sendBlock(BaselineProtocol::Abort, proto.errorMessage().toLatin1());  // In case the client can hear us, tell it what's wrong.
+        proto.socket.disconnectFromHost();
+        return false;
+    }
+    QString logMsg;
+    foreach (QString key, plat.keys()) {
+        if (key != PI_HostName && key != PI_HostAddress)
+            logMsg += key + QLS(": '") + plat.value(key) + QLS("', ");
+    }
+    qDebug() << runId << logtime() << "Connection established with" << plat.value(PI_HostName)
+             << "[" << qPrintable(plat.value(PI_HostAddress)) << "]" << logMsg;
+
+    settings->beginGroup("ClientFilters");
+    if (!settings->childKeys().isEmpty() && !plat.value(PI_PulseGitBranch).isEmpty()) {  // i.e. not adhoc client
+        // Abort if client does not match the filters
+        foreach (QString filterKey, settings->childKeys()) {
+            QString filter = settings->value(filterKey).toString();
+            QString platVal = plat.value(filterKey);
+            if (filter.isEmpty() || platVal.isEmpty())
+                continue;  // tbd: add a syntax for specifying a "value-must-be-present" filter
+            if (!platVal.contains(filter)) {
+                qDebug() << runId << logtime() << "Did not pass client filter on" << filterKey << "; disconnecting.";
+                proto.sendBlock(BaselineProtocol::Abort, QByteArray("Configured to not do testing for this client or repo, ref. ") + BaselineServer::settingsFilePath().toLatin1());
+                proto.socket.disconnectFromHost();
+                return false;
+            }
+        }
+    }
+    settings->endGroup();
+
+    proto.sendBlock(BaselineProtocol::Ack, QByteArray());
+
+    report.init(this, runId, plat);
+    return true;
+}
+
+void BaselineHandler::receiveRequest()
+{
+    if (!connectionEstablished) {
+        connectionEstablished = establishConnection();
+        return;
+    }
+
+    QByteArray block;
+    BaselineProtocol::Command cmd;
+    if (!proto.receiveBlock(&cmd, &block)) {
+        qWarning() << runId << logtime() << "Command reception failed. "<< proto.errorMessage();
+        QThread::currentThread()->exit(1);
+        return;
+    }
+
+    switch(cmd) {
+    case BaselineProtocol::RequestBaselineChecksums:
+        provideBaselineChecksums(block);
+        break;
+    case BaselineProtocol::AcceptNewBaseline:
+        storeImage(block, true);
+        break;
+    case BaselineProtocol::AcceptMismatch:
+        storeImage(block, false);
+        break;
+    default:
+        qWarning() << runId << logtime() << "Unknown command received. " << proto.errorMessage();
+        proto.sendBlock(BaselineProtocol::UnknownError, QByteArray());
+    }
+}
+
+
+void BaselineHandler::provideBaselineChecksums(const QByteArray &itemListBlock)
+{
+    ImageItemList itemList;
+    QDataStream ds(itemListBlock);
+    ds >> itemList;
+    qDebug() << runId << logtime() << "Received request for checksums for" << itemList.count()
+             << "items in test function" << itemList.at(0).testFunction;
+
+    for (ImageItemList::iterator i = itemList.begin(); i != itemList.end(); ++i) {
+        i->imageChecksums.clear();
+        i->status = ImageItem::BaselineNotFound;
+        QString prefix = pathForItem(*i, true);
+        PlatformInfo itemData = fetchItemMetadata(prefix);
+        if (itemData.contains(PI_ImageChecksum)) {
+            bool ok = false;
+            quint64 checksum = itemData.value(PI_ImageChecksum).toULongLong(&ok, 16);
+            if (ok) {
+                i->imageChecksums.prepend(checksum);
+                i->status = ImageItem::Ok;
+            }
+        }
+    }
+
+    // Find and mark blacklisted items
+    QString context = pathForItem(itemList.at(0), true, false).section(QLC('/'), 0, -2);
+    if (itemList.count() > 0) {
+        QFile file(BaselineServer::storagePath() + QLC('/') + context + QLS("/BLACKLIST"));
+        if (file.open(QIODevice::ReadOnly)) {
+            QTextStream in(&file);
+            do {
+                QString itemName = in.readLine();
+                if (!itemName.isNull()) {
+                    for (ImageItemList::iterator i = itemList.begin(); i != itemList.end(); ++i) {
+                        if (i->itemName == itemName)
+                            i->status = ImageItem::IgnoreItem;
+                    }
+                }
+            } while (!in.atEnd());
+        }
+    }
+
+    QByteArray block;
+    QDataStream ods(&block, QIODevice::WriteOnly);
+    ods << itemList;
+    proto.sendBlock(BaselineProtocol::Ack, block);
+    report.addItems(itemList);
+}
+
+
+void BaselineHandler::storeImage(const QByteArray &itemBlock, bool isBaseline)
+{
+    QDataStream ds(itemBlock);
+    ImageItem item;
+    ds >> item;
+
+    QString prefix = pathForItem(item, isBaseline);
+    qDebug() << runId << logtime() << "Received" << (isBaseline ? "baseline" : "mismatched") << "image for:" << item.itemName << "Storing in" << prefix;
+
+    QString msg;
+    if (isBaseline)
+        msg = QLS("New baseline image stored: ") + pathForItem(item, true, true) + QLS(FileFormat);
+    else
+        msg = BaselineServer::baseUrl() + report.filePath();
+    proto.sendBlock(BaselineProtocol::Ack, msg.toLatin1());
+
+    QString dir = prefix.section(QLC('/'), 0, -2);
+    QDir cwd;
+    if (!cwd.exists(dir))
+        cwd.mkpath(dir);
+    item.image.save(prefix + QLS(FileFormat), FileFormat);
+
+    PlatformInfo itemData = plat;
+    itemData.insert(PI_ImageChecksum, QString::number(item.imageChecksums.at(0), 16));  //# Only the first is stored. TBD: get rid of list
+    itemData.insert(PI_RunId, runId);
+    itemData.insert(PI_CreationDate, QDateTime::currentDateTime().toString());
+    storeItemMetadata(itemData, prefix);
+
+    if (!isBaseline)
+        report.addMismatch(item);
+}
+
+
+void BaselineHandler::storeItemMetadata(const PlatformInfo &metadata, const QString &path)
+{
+    QFile file(path + QLS(MetadataFileExt));
+    if (!file.open(QIODevice::WriteOnly | QIODevice::Truncate)) {
+        qWarning() << runId << logtime() << "ERROR: could not write to file" << file.fileName();
+        return;
+    }
+    QTextStream out(&file);
+    PlatformInfo::const_iterator it = metadata.constBegin();
+    while (it != metadata.constEnd()) {
+        out << it.key()  << ": " << it.value() << endl;
+        ++it;
+    }
+    file.close();
+}
+
+
+PlatformInfo BaselineHandler::fetchItemMetadata(const QString &path)
+{
+    PlatformInfo res;
+    QFile file(path + QLS(MetadataFileExt));
+    if (!file.open(QIODevice::ReadOnly))
+        return res;
+    QTextStream in(&file);
+    do {
+        QString line = in.readLine();
+        int idx = line.indexOf(QLS(": "));
+        if (idx > 0)
+            res.insert(line.left(idx), line.mid(idx+2));
+    } while (!in.atEnd());
+    return res;
+}
+
+
+void BaselineHandler::receiveDisconnect()
+{
+    qDebug() << runId << logtime() << "Client disconnected.";
+    report.end();
+    QThread::currentThread()->exit(0);
+}
+
+
+void BaselineHandler::mapPlatformInfo() const
+{
+    mapped = plat;
+
+    // Map hostname
+    QString host = plat.value(PI_HostName).section(QLC('.'), 0, 0);  // Filter away domain, if any
+    if (host.isEmpty() || host == QLS("localhost")) {
+        host = plat.value(PI_HostAddress);
+    } else {
+        if (!plat.value(PI_PulseGitBranch).isEmpty()) {
+            // i.e. pulse run, so remove index postfix typical of vm hostnames
+            host.remove(QRegExp(QLS("\\d+$")));
+            if (host.endsWith(QLC('-')))
+                host.chop(1);
+        }
+    }
+    if (host.isEmpty())
+        host = QLS("unknownhost");
+    mapped.insert(PI_HostName, host);
+
+    // Map qmakespec
+    QString mkspec = plat.value(PI_QMakeSpec);
+    mapped.insert(PI_QMakeSpec, mkspec.replace(QLC('/'), QLC('_')));
+
+    // Map Qt version
+    QString ver = plat.value(PI_QtVersion);
+    mapped.insert(PI_QtVersion, ver.prepend(QLS("Qt-")));
+}
+
+QString BaselineHandler::pathForItem(const ImageItem &item, bool isBaseline, bool absolute) const
+{
+    if (mapped.isEmpty())
+        mapPlatformInfo();
+
+    QString itemName = item.itemName.simplified();
+    itemName.replace(QLC(' '), QLC('_'));
+    itemName.replace(QLC('.'), QLC('_'));
+    itemName.append(QLC('_'));
+    itemName.append(QString::number(item.itemChecksum, 16).rightJustified(4, QLC('0')));
+
+    QStringList path;
+    if (absolute)
+        path += BaselineServer::storagePath();
+    path += mapped.value(PI_TestCase);
+    path += QLS(isBaseline ? "baselines" : "mismatches");
+    path += item.testFunction;
+    path += mapped.value(PI_QtVersion);
+    path += mapped.value(PI_QMakeSpec);
+    path += mapped.value(PI_HostName);
+    if (!isBaseline)
+        path += runId;
+    path += itemName + QLC('.');
+
+    return path.join(QLS("/"));
+}
+
+
+QString BaselineHandler::view(const QString &baseline, const QString &rendered, const QString &compared)
+{
+    QFile f(":/templates/view.html");
+    f.open(QIODevice::ReadOnly);
+    return QString::fromLatin1(f.readAll()).arg('/'+baseline, '/'+rendered, '/'+compared);
+}
+
+
+QString BaselineHandler::clearAllBaselines(const QString &context)
+{
+    int tot = 0;
+    int failed = 0;
+    QDirIterator it(BaselineServer::storagePath() + QLC('/') + context,
+                    QStringList() << QLS("*.") + QLS(FileFormat) << QLS("*.") + QLS(MetadataFileExt));
+    while (it.hasNext()) {
+        tot++;
+        if (!QFile::remove(it.next()))
+            failed++;
+    }
+    return QString(QLS("%1 of %2 baselines cleared from context ")).arg((tot-failed)/2).arg(tot/2) + context;
+}
+
+QString BaselineHandler::updateBaselines(const QString &context, const QString &mismatchContext, const QString &itemFile)
+{
+    int tot = 0;
+    int failed = 0;
+    QString storagePrefix = BaselineServer::storagePath() + QLC('/');
+    // If itemId is set, update just that one, otherwise, update all:
+    QString filter = itemFile.isEmpty() ? QLS("*_????.") : itemFile;
+    QDirIterator it(storagePrefix + mismatchContext, QStringList() << filter + QLS(FileFormat) << filter + QLS(MetadataFileExt));
+    while (it.hasNext()) {
+        tot++;
+        it.next();
+        QString oldFile = storagePrefix + context + QLC('/') + it.fileName();
+        QFile::remove(oldFile);                       // Remove existing baseline file
+        if (!QFile::copy(it.filePath(), oldFile))     // and replace it with the mismatch
+            failed++;
+    }
+    return QString(QLS("%1 of %2 baselines updated in context %3 from context %4")).arg((tot-failed)/2).arg(tot/2).arg(context, mismatchContext);
+}
+
+QString BaselineHandler::blacklistTest(const QString &context, const QString &itemId, bool removeFromBlacklist)
+{
+    QFile file(BaselineServer::storagePath() + QLC('/') + context + QLS("/BLACKLIST"));
+    QStringList blackList;
+    if (file.open(QIODevice::ReadWrite)) {
+        while (!file.atEnd())
+            blackList.append(file.readLine().trimmed());
+
+        if (removeFromBlacklist)
+            blackList.removeAll(itemId);
+        else if (!blackList.contains(itemId))
+            blackList.append(itemId);
+
+        file.resize(0);
+        foreach (QString id, blackList)
+            file.write(id.toLatin1() + '\n');
+        file.close();
+        return QLS(removeFromBlacklist ? "Whitelisted " : "Blacklisted ") + itemId + QLS(" in context ") + context;
+    } else {
+        return QLS("Unable to update blacklisted tests, failed to open ") + file.fileName();
+    }
+}
+
+
+void BaselineHandler::testPathMapping()
+{
+    qDebug() << "Storage prefix:" << BaselineServer::storagePath();
+
+    QStringList hosts;
+    hosts << QLS("bq-ubuntu910-x86-01")
+          << QLS("bq-ubuntu910-x86-15")
+          << QLS("osl-mac-master-5.test.qt.nokia.com")
+          << QLS("osl-mac-master-6.test.qt.nokia.com")
+          << QLS("sv-xp-vs-010")
+          << QLS("sv-xp-vs-011")
+          << QLS("sv-solaris-sparc-008")
+          << QLS("macbuilder-02.test.troll.no")
+          << QLS("bqvm1164")
+          << QLS("chimera")
+          << QLS("localhost")
+          << QLS("");
+
+    ImageItem item;
+    item.testFunction = QLS("testPathMapping");
+    item.itemName = QLS("arcs.qps");
+    item.imageChecksums << 0x0123456789abcdefULL;
+    item.itemChecksum = 0x0123;
+
+    plat.insert(PI_QtVersion, QLS("5.0.0"));
+    plat.insert(PI_BuildKey, QLS("(nobuildkey)"));
+    plat.insert(PI_QMakeSpec, QLS("linux-g++"));
+    plat.insert(PI_PulseGitBranch, QLS("somebranch"));
+    foreach(const QString& host, hosts) {
+        mapped.clear();
+        plat.insert(PI_HostName, host);
+        qDebug() << "Baseline from" << host << "->" << pathForItem(item, true);
+        qDebug() << "Mismatch from" << host << "->" << pathForItem(item, false);
+    }
+}
+
+
+QString BaselineHandler::computeMismatchScore(const QImage &baseline, const QImage &rendered)
+{
+    if (baseline.size() != rendered.size() || baseline.format() != rendered.format())
+        return QLS("[No score, incomparable images.]");
+    if (baseline.depth() != 32)
+        return QLS("[Score computation not implemented for format.]");
+
+    int w = baseline.width();
+    int h = baseline.height();
+
+    uint ncd = 0; // number of differing color pixels
+    uint nad = 0; // number of differing alpha pixels
+    uint scd = 0; // sum of color pixel difference
+    uint sad = 0; // sum of alpha pixel difference
+
+    for (int y=0; y<h; ++y) {
+        const QRgb *bl = (const QRgb *) baseline.constScanLine(y);
+        const QRgb *rl = (const QRgb *) rendered.constScanLine(y);
+        for (int x=0; x<w; ++x) {
+            QRgb b = bl[x];
+            QRgb r = rl[x];
+            if (r != b) {
+                int dr = qAbs(qRed(b) - qRed(r));
+                int dg = qAbs(qGreen(b) - qGreen(r));
+                int db = qAbs(qBlue(b) - qBlue(r));
+                int ds = dr + dg + db;
+                int da = qAbs(qAlpha(b) - qAlpha(r));
+                if (ds) {
+                    ncd++;
+                    scd += ds;
+                }
+                if (da) {
+                    nad++;
+                    sad += da;
+                }
+            }
+        }
+    }
+
+    double pcd = 100.0 * ncd / (w*h);  // percent of pixels that differ
+    double acd = ncd ? double(scd) / (3*ncd) : 0;         // avg. difference
+    QString res = QString(QLS("Diffscore: %1% (Num:%2 Avg:%3)")).arg(pcd, 0, 'g', 2).arg(ncd).arg(acd, 0, 'g', 2);
+    if (baseline.hasAlphaChannel()) {
+        double pad = 100.0 * nad / (w*h);  // percent of pixels that differ
+        double aad = nad ? double(sad) / (3*nad) : 0;         // avg. difference
+        res += QString(QLS(" Alpha-diffscore: %1% (Num:%2 Avg:%3)")).arg(pad, 0, 'g', 2).arg(nad).arg(aad, 0, 'g', 2);
+    }
+    return res;
+}
diff --git a/tests/baselineserver/src/baselineserver.h b/tests/baselineserver/src/baselineserver.h
new file mode 100644
index 0000000000..d73bb974f9
--- /dev/null
+++ b/tests/baselineserver/src/baselineserver.h
@@ -0,0 +1,141 @@
+/****************************************************************************
+**
+** 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 test suite of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** 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.
+**
+** 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.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+#ifndef BASELINESERVER_H
+#define BASELINESERVER_H
+
+#include <QStringList>
+#include <QTcpServer>
+#include <QThread>
+#include <QTcpSocket>
+#include <QScopedPointer>
+#include <QTimer>
+#include <QDateTime>
+#include <QSettings>
+
+#include "baselineprotocol.h"
+#include "report.h"
+
+// #seconds between update checks
+#define HEARTBEAT 10
+#define MetadataFileExt "metadata"
+
+class BaselineServer : public QTcpServer
+{
+    Q_OBJECT
+
+public:
+    BaselineServer(QObject *parent = 0);
+
+    static QString storagePath();
+    static QString baseUrl();
+    static QString settingsFilePath();
+
+protected:
+    void incomingConnection(int socketDescriptor);
+
+private slots:
+    void heartbeat();
+
+private:
+    QTimer *heartbeatTimer;
+    QDateTime meLastMod;
+    QString lastRunId;
+    int lastRunIdIdx;
+    static QString storage;
+    static QString url;
+    static QString settingsFile;
+};
+
+
+
+class BaselineThread : public QThread
+{
+    Q_OBJECT
+
+public:
+    BaselineThread(const QString &runId, int socketDescriptor, QObject *parent);
+    void run();
+
+private:
+    QString runId;
+    int socketDescriptor;
+};
+
+
+class BaselineHandler : public QObject
+{
+    Q_OBJECT
+
+public:
+    BaselineHandler(const QString &runId, int socketDescriptor = -1);
+    void testPathMapping();
+    QString pathForItem(const ImageItem &item, bool isBaseline = true, bool absolute = true) const;
+
+    // CGI callbacks:
+    static QString view(const QString &baseline, const QString &rendered, const QString &compared);
+    static QString clearAllBaselines(const QString &context);
+    static QString updateBaselines(const QString &context, const QString &mismatchContext, const QString &itemFile);
+    static QString blacklistTest(const QString &context, const QString &itemId, bool removeFromBlacklist = false);
+
+private slots:
+    void receiveRequest();
+    void receiveDisconnect();
+
+private:
+    bool establishConnection();
+    void provideBaselineChecksums(const QByteArray &itemListBlock);
+    void storeImage(const QByteArray &itemBlock, bool isBaseline);
+    void storeItemMetadata(const PlatformInfo &metadata, const QString &path);
+    PlatformInfo fetchItemMetadata(const QString &path);
+    void mapPlatformInfo() const;
+    const char *logtime();
+    QString computeMismatchScore(const QImage& baseline, const QImage& rendered);
+
+    BaselineProtocol proto;
+    PlatformInfo plat;
+    mutable PlatformInfo mapped;
+    QString runId;
+    bool connectionEstablished;
+    Report report;
+    QSettings *settings;
+};
+
+#endif // BASELINESERVER_H
diff --git a/tests/baselineserver/src/baselineserver.pro b/tests/baselineserver/src/baselineserver.pro
new file mode 100644
index 0000000000..b59d59d1ed
--- /dev/null
+++ b/tests/baselineserver/src/baselineserver.pro
@@ -0,0 +1,30 @@
+#-------------------------------------------------
+#
+# Project created by QtCreator 2010-08-11T11:51:09
+#
+#-------------------------------------------------
+
+QT       += core network
+
+# gui needed for QImage
+# QT       -= gui
+
+TARGET = baselineserver
+DESTDIR = ../bin
+CONFIG   += console
+CONFIG   -= app_bundle
+
+TEMPLATE = app
+
+include(../shared/baselineprotocol.pri)
+
+SOURCES += main.cpp \
+    baselineserver.cpp \
+    report.cpp
+
+HEADERS += \
+    baselineserver.h \
+    report.h
+
+RESOURCES += \
+    baselineserver.qrc
diff --git a/tests/baselineserver/src/baselineserver.qrc b/tests/baselineserver/src/baselineserver.qrc
new file mode 100644
index 0000000000..b5cd6afadb
--- /dev/null
+++ b/tests/baselineserver/src/baselineserver.qrc
@@ -0,0 +1,5 @@
+<RCC>
+    <qresource prefix="/">
+        <file>templates/view.html</file>
+    </qresource>
+</RCC>
diff --git a/tests/baselineserver/src/main.cpp b/tests/baselineserver/src/main.cpp
new file mode 100644
index 0000000000..8e5fa4e669
--- /dev/null
+++ b/tests/baselineserver/src/main.cpp
@@ -0,0 +1,70 @@
+/****************************************************************************
+**
+** 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 test suite of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** 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.
+**
+** 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.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+#include <QtCore/QCoreApplication>
+#include "baselineserver.h"
+
+int main(int argc, char *argv[])
+{
+    QCoreApplication a(argc, argv);
+
+    QString queryString(qgetenv("QUERY_STRING"));
+    if (!queryString.isEmpty()) {
+        // run as CGI script
+        Report::handleCGIQuery(queryString);
+        return 0;
+    }
+
+    if (a.arguments().contains(QLatin1String("-testmapping"))) {
+        BaselineHandler h(QLS("SomeRunId"));
+        h.testPathMapping();
+        return 0;
+    }
+
+    BaselineServer server;
+    if (!server.listen(QHostAddress::Any, BaselineProtocol::ServerPort)) {
+        qWarning("Failed to listen!");
+        return 1;
+    }
+
+    qDebug() << "\n*****" << argv[0] << "started, ready to serve on port" << BaselineProtocol::ServerPort
+             << "with baseline protocol version" << BaselineProtocol::ProtocolVersion << "*****\n";
+    return a.exec();
+}
diff --git a/tests/baselineserver/src/report.cpp b/tests/baselineserver/src/report.cpp
new file mode 100644
index 0000000000..7c2d6ac6df
--- /dev/null
+++ b/tests/baselineserver/src/report.cpp
@@ -0,0 +1,311 @@
+/****************************************************************************
+**
+** 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 test suite of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** 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.
+**
+** 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.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+#include "report.h"
+#include "baselineprotocol.h"
+#include "baselineserver.h"
+#include <QDir>
+#include <QProcess>
+#include <QUrl>
+
+Report::Report()
+    : written(false), numItems(0), numMismatches(0)
+{
+}
+
+Report::~Report()
+{
+    end();
+}
+
+QString Report::filePath()
+{
+    return path;
+}
+
+void Report::init(const BaselineHandler *h, const QString &r, const PlatformInfo &p)
+{
+    handler = h;
+    runId = r;
+    plat = p;
+    rootDir = BaselineServer::storagePath() + QLC('/');
+    reportDir = plat.value(PI_TestCase) + QLC('/') + (plat.value(PI_PulseGitBranch).isEmpty() ? QLS("reports/adhoc/") : QLS("reports/pulse/"));
+    QString dir = rootDir + reportDir;
+    QDir cwd;
+    if (!cwd.exists(dir))
+        cwd.mkpath(dir);
+    path = reportDir + QLS("Report_") + runId + QLS(".html");
+}
+
+void Report::addItems(const ImageItemList &items)
+{
+    if (items.isEmpty())
+        return;
+    numItems += items.size();
+    QString func = items.at(0).testFunction;
+    if (!testFunctions.contains(func))
+        testFunctions.append(func);
+    itemLists[func] += items;
+}
+
+void Report::addMismatch(const ImageItem &item)
+{
+    if (!testFunctions.contains(item.testFunction)) {
+        qWarning() << "Report::addMismatch: unknown testfunction" << item.testFunction;
+        return;
+    }
+    bool found = false;
+    ImageItemList &list = itemLists[item.testFunction];
+    for (ImageItemList::iterator it = list.begin(); it != list.end(); ++it) {
+        if (it->itemName == item.itemName && it->itemChecksum == item.itemChecksum) {
+            it->status = ImageItem::Mismatch;
+            found = true;
+            break;
+        }
+    }
+    if (found)
+        numMismatches++;
+    else
+        qWarning() << "Report::addMismatch: unknown item" << item.itemName << "in testfunction" << item.testFunction;
+}
+
+void Report::end()
+{
+    if (written || !numMismatches)
+        return;
+    write();
+    written = true;
+}
+
+
+void Report::write()
+{
+    QFile file(rootDir + path);
+    if (!file.open(QIODevice::WriteOnly | QIODevice::Truncate)) {
+        qWarning() << "Failed to open report file" << file.fileName();
+        return;
+    }
+    out.setDevice(&file);
+
+    writeHeader();
+    foreach(const QString &func, testFunctions) {
+        writeFunctionResults(itemLists.value(func));
+    }
+    writeFooter();
+    file.close();
+}
+
+
+void Report::writeHeader()
+{
+    QString title = plat.value(PI_TestCase) + QLS(" Qt Baseline Test Report");
+    out << "<head><title>" << title << "</title></head>\n"
+        << "<html><body><h1>" << title << "</h1>\n"
+        << "<p>Note: This is a <i>static</i> page, generated at " << QDateTime::currentDateTime().toString()
+        << " for the test run with id " << runId << "</p>\n"
+        << "<p>Summary: <b><span style=\"color:red\">" << numMismatches << " of " << numItems << "</b></span> items reported mismatching</p>\n\n";
+    out << "<h3>Platform Info:</h3>\n"
+        << "<table>\n";
+    foreach (QString key, plat.keys())
+        out << "<tr><td>" << key << "</td><td>" << plat.value(key) << "</td></tr>\n";
+    out << "</table>\n\n";
+}
+
+
+void Report::writeFunctionResults(const ImageItemList &list)
+{
+    QString testFunction = list.at(0).testFunction;
+    QString pageUrl = BaselineServer::baseUrl() + path;
+    QString ctx = handler->pathForItem(list.at(0), true, false).section(QLC('/'), 0, -2);
+    QString misCtx = handler->pathForItem(list.at(0), false, false).section(QLC('/'), 0, -2);
+
+
+    out << "\n<p>&nbsp;</p><h3>Test function: " << testFunction << "</h3>\n";
+    out << "<p><a href=\"/cgi-bin/server.cgi?cmd=clearAllBaselines&context=" << ctx << "&url=" << pageUrl
+        << "\"><b>Clear all baselines</b></a> for this testfunction (They will be recreated by the next run)</p>\n";
+    out << "<p><a href=\"/cgi-bin/server.cgi?cmd=updateAllBaselines&context=" << ctx << "&mismatchContext=" << misCtx << "&url=" << pageUrl
+        << "\"><b>Let these mismatching images be the new baselines</b></a> for this testfunction</p>\n\n";
+
+    out << "<table border=\"2\">\n"
+           "<tr>\n"
+           "<th width=123>Item</th>\n"
+           "<th width=246>Baseline</th>\n"
+           "<th width=246>Rendered</th>\n"
+           "<th width=246>Comparison (diffs are <span style=\"color:red\">RED</span>)</th>\n"
+           "<th width=246>Info/Action</th>\n"
+           "</tr>\n\n";
+
+    foreach (const ImageItem &item, list) {
+        out << "<tr>\n";
+        out << "<td>" << item.itemName << "</td>\n";
+        QString prefix = handler->pathForItem(item, true, false);
+        QString baseline = prefix + QLS(FileFormat);
+        QString metadata = prefix + QLS(MetadataFileExt);
+        if (item.status == ImageItem::Mismatch) {
+            QString rendered = handler->pathForItem(item, false, false) + QLS(FileFormat);
+            QString itemFile = prefix.section(QLC('/'), -1);
+            writeItem(baseline, rendered, item, itemFile, ctx, misCtx, metadata);
+        }
+        else {
+            out << "<td align=center><a href=\"/" << baseline << "\">image</a> <a href=\"/" << metadata << "\">info</a></td>\n"
+                << "<td align=center colspan=2><small>n/a</small></td>\n"
+                << "<td align=center>";
+            switch (item.status) {
+            case ImageItem::BaselineNotFound:
+                out << "Baseline not found/regenerated";
+                break;
+            case ImageItem::IgnoreItem:
+                out << "<span style=\"background-color:yellow\">Blacklisted</span> "
+                    << "<a href=\"/cgi-bin/server.cgi?cmd=whitelist&context=" << ctx
+                    << "&itemId=" << item.itemName << "&url=" << pageUrl
+                    << "\">Whitelist this item</a>";
+                break;
+            case ImageItem::Ok:
+                out << "<span style=\"color:green\"><small>No mismatch reported</small></span>";
+                break;
+            default:
+                out << "?";
+                break;
+            }
+            out << "</td>\n";
+        }
+        out << "</tr>\n\n";
+    }
+
+    out << "</table>\n";
+}
+
+void Report::writeItem(const QString &baseline, const QString &rendered, const ImageItem &item,
+                       const QString &itemFile, const QString &ctx, const QString &misCtx, const QString &metadata)
+{
+    QString compared = generateCompared(baseline, rendered);
+    QString pageUrl = BaselineServer::baseUrl() + path;
+
+    QStringList images = QStringList() << baseline << rendered << compared;
+    foreach (const QString& img, images)
+        out << "<td height=246 align=center><a href=\"/" << img << "\"><img src=\"/" << generateThumbnail(img) << "\"></a></td>\n";
+
+    out << "<td align=center>\n"
+        << "<p><span style=\"color:red\">Mismatch reported</span></p>\n"
+        << "<p><a href=\"/" << metadata << "\">Baseline Info</a>\n"
+        << "<p><a href=\"/cgi-bin/server.cgi?cmd=updateSingleBaseline&context=" << ctx << "&mismatchContext=" << misCtx
+        << "&itemFile=" << itemFile << "&url=" << pageUrl << "\">Let this be the new baseline</a></p>\n"
+        << "<p><a href=\"/cgi-bin/server.cgi?cmd=blacklist&context=" << ctx
+        << "&itemId=" << item.itemName << "&url=" << pageUrl << "\">Blacklist this item</a></p>\n"
+        << "<p><a href=\"/cgi-bin/server.cgi?cmd=view&baseline=" << baseline << "&rendered=" << rendered
+        << "&compared=" << compared << "&url=" << pageUrl << "\">Inspect</a></p>\n"
+        << "</td>\n";
+}
+
+void Report::writeFooter()
+{
+    out << "\n</body></html>\n";
+}
+
+
+QString Report::generateCompared(const QString &baseline, const QString &rendered, bool fuzzy)
+{
+    QString res = rendered;
+    QFileInfo fi(res);
+    res.chop(fi.suffix().length() + 1);
+    res += QLS(fuzzy ? "_fuzzycompared.png" : "_compared.png");
+    QStringList args;
+    if (fuzzy)
+        args << QLS("-fuzz") << QLS("5%");
+    args << rootDir+baseline << rootDir+rendered << rootDir+res;
+    QProcess::execute(QLS("compare"), args);
+    return res;
+}
+
+
+QString Report::generateThumbnail(const QString &image)
+{
+    QString res = image;
+    QFileInfo imgFI(rootDir+image);
+    res.chop(imgFI.suffix().length() + 1);
+    res += QLS("_thumbnail.jpg");
+    QFileInfo resFI(rootDir+res);
+    if (resFI.exists() && resFI.lastModified() > imgFI.lastModified())
+        return res;
+    QStringList args;
+    args << rootDir+image << QLS("-resize") << QLS("240x240>") << QLS("-quality") << QLS("50") << rootDir+res;
+    QProcess::execute(QLS("convert"), args);
+    return res;
+}
+
+
+void Report::handleCGIQuery(const QString &query)
+{
+    QUrl cgiUrl(QLS("http://dummy/cgi-bin/dummy.cgi?") + query);
+    QTextStream s(stdout);
+    s << "Content-Type: text/html\r\n\r\n"
+      << "<HTML>";
+
+    QString command(cgiUrl.queryItemValue("cmd"));
+
+    if (command == QLS("view")) {
+        s << BaselineHandler::view(cgiUrl.queryItemValue(QLS("baseline")),
+                                   cgiUrl.queryItemValue(QLS("rendered")),
+                                   cgiUrl.queryItemValue(QLS("compared")));
+    }
+    else if (command == QLS("updateSingleBaseline")) {
+        s << BaselineHandler::updateBaselines(cgiUrl.queryItemValue(QLS("context")),
+                                              cgiUrl.queryItemValue(QLS("mismatchContext")),
+                                              cgiUrl.queryItemValue(QLS("itemFile")));
+    } else if (command == QLS("updateAllBaselines")) {
+        s << BaselineHandler::updateBaselines(cgiUrl.queryItemValue(QLS("context")),
+                                              cgiUrl.queryItemValue(QLS("mismatchContext")),
+                                              QString());
+    } else if (command == QLS("clearAllBaselines")) {
+        s << BaselineHandler::clearAllBaselines(cgiUrl.queryItemValue(QLS("context")));
+    } else if (command == QLS("blacklist")) {
+        // blacklist a test
+        s << BaselineHandler::blacklistTest(cgiUrl.queryItemValue(QLS("context")),
+                                            cgiUrl.queryItemValue(QLS("itemId")));
+    } else if (command == QLS("whitelist")) {
+        // whitelist a test
+        s << BaselineHandler::blacklistTest(cgiUrl.queryItemValue(QLS("context")),
+                                            cgiUrl.queryItemValue(QLS("itemId")), true);
+    } else {
+        s << "Unknown query:<br>" << query << "<br>";
+    }
+    s << "<p><a href=\"" << cgiUrl.queryItemValue(QLS("url")) << "\">Back to report</a>";
+    s << "</HTML>";
+}
diff --git a/tests/baselineserver/src/report.h b/tests/baselineserver/src/report.h
new file mode 100644
index 0000000000..d21102d32f
--- /dev/null
+++ b/tests/baselineserver/src/report.h
@@ -0,0 +1,91 @@
+/****************************************************************************
+**
+** 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 test suite of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** 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.
+**
+** 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.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+#ifndef REPORT_H
+#define REPORT_H
+
+#include "baselineprotocol.h"
+#include <QFile>
+#include <QTextStream>
+#include <QMap>
+#include <QStringList>
+
+class BaselineHandler;
+
+class Report
+{
+public:
+    Report();
+    ~Report();
+
+    void init(const BaselineHandler *h, const QString &r, const PlatformInfo &p);
+    void addItems(const ImageItemList& items);
+    void addMismatch(const ImageItem& item);
+    void end();
+
+    QString filePath();
+
+    static void handleCGIQuery(const QString &query);
+
+private:
+    void write();
+    void writeFunctionResults(const ImageItemList &list);
+    void writeItem(const QString &baseline, const QString &rendered, const ImageItem &item,
+                   const QString &itemFile, const QString &ctx, const QString &misCtx, const QString &metadata);
+    void writeHeader();
+    void writeFooter();
+    QString generateCompared(const QString &baseline, const QString &rendered, bool fuzzy = false);
+    QString generateThumbnail(const QString &image);
+
+    const BaselineHandler *handler;
+    QString runId;
+    PlatformInfo plat;
+    QString rootDir;
+    QString reportDir;
+    QString path;
+    QStringList testFunctions;
+    QMap<QString, ImageItemList> itemLists;
+    bool written;
+    int numItems;
+    int numMismatches;
+    QTextStream out;
+};
+
+#endif // REPORT_H
diff --git a/tests/baselineserver/src/templates/view.html b/tests/baselineserver/src/templates/view.html
new file mode 100644
index 0000000000..c048f4781c
--- /dev/null
+++ b/tests/baselineserver/src/templates/view.html
@@ -0,0 +1,79 @@
+<h3>Lancelot Viewer</h3>
+
+<p>
+Zoom:
+<input name="zoom" id="z1" type="radio" checked="Checked">1x</input>
+<input name="zoom" id="z2" type="radio">2x</input>
+<input name="zoom" id="z4" type="radio">4x</input>
+</p>
+
+<p><table>
+<tr>
+<td><input name="imgselect" id="baseline" type="radio" checked="Checked">Baseline</input></td>
+<td>%1</td>
+</tr>
+<tr>
+<td><input name="imgselect" id="rendered" type="radio">Rendered</input></td>
+<td>%2</td>
+</tr>
+<tr>
+<td><input name="imgselect" id="compared" type="radio">Differences</input></td>
+<td></td>
+</tr>
+</table></p>
+
+
+<p>
+<canvas id="c" width="800" height="800"></canvas>
+</p>
+
+<script>
+  var canvas = document.getElementById("c");
+  var context = canvas.getContext("2d");
+  var cat = new Image();
+  cat.src = "%1";
+  var z = 1;
+  cat.onload = function() {
+    context.mozImageSmoothingEnabled = false;
+    context.drawImage(cat, 0, 0, z*cat.width, z*cat.height);
+  };
+
+  var bbut = document.getElementById("baseline");
+  bbut.onclick = function() {
+    cat.src = "%1";
+  };
+
+  var rbut = document.getElementById("rendered");
+  rbut.onclick = function() {
+    cat.src = "%2";
+  };
+
+  var cbut = document.getElementById("compared");
+  cbut.onclick = function() {
+    cat.src = "%3";
+  };
+
+  function setZoom(zoom)
+  {
+    z = zoom;
+    canvas.width = z*800;
+    canvas.height = z*800;
+    context.mozImageSmoothingEnabled = false;
+    context.drawImage(cat, 0, 0, z*cat.width, z*cat.height);
+  }
+
+  var z1but = document.getElementById("z1");
+  z1but.onclick = function() {
+      setZoom(1);
+  };
+
+  var z2but = document.getElementById("z2");
+  z2but.onclick = function() {
+      setZoom(2);
+  };
+
+  var z4but = document.getElementById("z4");
+  z4but.onclick = function() {
+      setZoom(4);
+  };
+</script>