/** @short Prepare a network request
This function handles delegating access to the other body parts using various schemes (ie. the special trojita-imap:// one used
by Trojita for internal purposes and the cid: one for referencing to other body parts). Policy checks for filtering access to
the public Internet are also performed at this level.
*/
QNetworkReply *MsgPartNetAccessManager::createRequest(Operation op, const QNetworkRequest &req, QIODevice *outgoingData)
{
Q_UNUSED(op);
Q_UNUSED(outgoingData);
if (!message.isValid()) {
// Our message got removed in the meanwhile
// FIXME: add a better class here
return new Imap::Network::ForbiddenReply(this);
}
Q_ASSERT(message.isValid());
const Mailbox::Model *constModel = 0;
Mailbox::Model::realTreeItem(message, &constModel);
Q_ASSERT(constModel);
Mailbox::Model *model = const_cast<Mailbox::Model *>(constModel);
Q_ASSERT(model);
Imap::Mailbox::TreeItemPart *part = pathToPart(message, req.url().path());
QModelIndex partIndex = part ? part->toIndex(model) : QModelIndex();
if (req.url().scheme() == QLatin1String("trojita-imap") && req.url().host() == QLatin1String("msg")) {
// Internal Trojita reference
if (part) {
return new Imap::Network::MsgPartNetworkReply(this, partIndex);
} else {
qDebug() << "No such part:" << req.url();
return new Imap::Network::ForbiddenReply(this);
}
} else if (req.url().scheme() == QLatin1String("cid")) {
// The cid: scheme for cross-part references
QByteArray cid = req.url().path().toUtf8();
if (!cid.startsWith("<"))
cid = QByteArray("<") + cid;
if (!cid.endsWith(">"))
cid += ">";
Imap::Mailbox::TreeItemPart *target = cidToPart(cid, model, model->realTreeItem(message));
if (target) {
return new Imap::Network::MsgPartNetworkReply(this, target->toIndex(model));
} else {
qDebug() << "Content-ID not found" << cid;
return new Imap::Network::ForbiddenReply(this);
}
} else if (req.url() == QUrl(QLatin1String("about:blank"))) {
// about:blank is a relatively harmless URL which is used for opening an empty page
return QNetworkAccessManager::createRequest(op, req, outgoingData);
} else if (req.url().scheme() == QLatin1String("data")) {
// data: scheme shall be safe, it's just a method of local access after all
return QNetworkAccessManager::createRequest(op, req, outgoingData);
} else {
// Regular access -- we've got to check policy here
if (req.url().scheme() == QLatin1String("http") || req.url().scheme() == QLatin1String("https")) {
if (externalsEnabled) {
return QNetworkAccessManager::createRequest(op, req, outgoingData);
} else {
emit requestingExternal(req.url());
return new Imap::Network::ForbiddenReply(this);
}
} else {
qDebug() << "Forbidden per policy:" << req.url();
return new Imap::Network::ForbiddenReply(this);
}
}
}
MessageView::MessageView(QWidget *parent, QSettings *settings): QWidget(parent), m_settings(settings)
{
QPalette pal = palette();
pal.setColor(backgroundRole(), palette().color(QPalette::Active, QPalette::Base));
pal.setColor(foregroundRole(), palette().color(QPalette::Active, QPalette::Text));
setPalette(pal);
setAutoFillBackground(true);
setFocusPolicy(Qt::StrongFocus); // not by the wheel
netAccess = new Imap::Network::MsgPartNetAccessManager(this);
connect(netAccess, SIGNAL(requestingExternal(QUrl)), this, SLOT(externalsRequested(QUrl)));
factory = new PartWidgetFactory(netAccess, this);
emptyView = new EmbeddedWebView(this, new QNetworkAccessManager(this));
emptyView->setFixedSize(450,300);
QMetaObject::invokeMethod(emptyView, "handlePageLoadFinished", Qt::QueuedConnection);
emptyView->setPage(new UserAgentWebPage(emptyView));
emptyView->installEventFilter(this);
emptyView->setAutoFillBackground(false);
viewer = emptyView;
//BEGIN create header section
headerSection = new QWidget(this);
// we create a dummy header, pass it through the style and the use it's color roles so we
// know what headers in general look like in the system
QHeaderView helpingHeader(Qt::Horizontal);
helpingHeader.ensurePolished();
pal = headerSection->palette();
pal.setColor(headerSection->backgroundRole(), palette().color(QPalette::Active, helpingHeader.backgroundRole()));
pal.setColor(headerSection->foregroundRole(), palette().color(QPalette::Active, helpingHeader.foregroundRole()));
headerSection->setPalette(pal);
headerSection->setAutoFillBackground(true);
// the actual mail header
m_envelope = new EnvelopeView(headerSection, this);
// the tag bar
tags = new TagListWidget(headerSection);
tags->setBackgroundRole(helpingHeader.backgroundRole());
tags->setForegroundRole(helpingHeader.foregroundRole());
tags->hide();
connect(tags, SIGNAL(tagAdded(QString)), this, SLOT(newLabelAction(QString)));
connect(tags, SIGNAL(tagRemoved(QString)), this, SLOT(deleteLabelAction(QString)));
// whether we allow to load external elements
externalElements = new ExternalElementsWidget(this);
externalElements->hide();
connect(externalElements, SIGNAL(loadingEnabled()), this, SLOT(externalsEnabled()));
// layout the header
layout = new QVBoxLayout(headerSection);
layout->addWidget(m_envelope, 1);
layout->addWidget(tags, 3);
layout->addWidget(externalElements, 1);
//END create header section
//BEGIN layout the message
layout = new QVBoxLayout(this);
layout->setSpacing(0);
layout->setContentsMargins(0,0,0,0);
layout->addWidget(headerSection, 1);
headerSection->hide();
// put the actual messages into an extra horizontal view
// this allows us easy usage of the trailing stretch and also to indent the message a bit
QHBoxLayout *hLayout = new QHBoxLayout;
hLayout->setContentsMargins(6,6,6,0);
hLayout->addWidget(viewer);
static_cast<QVBoxLayout*>(layout)->addLayout(hLayout, 1);
// add a strong stretch to squeeze header and message to the top
// possibly passing a large stretch factor to the message could be enough...
layout->addStretch(1000);
//END layout the message
// make the layout used to add messages our new horizontal layout
layout = hLayout;
markAsReadTimer = new QTimer(this);
markAsReadTimer->setSingleShot(true);
connect(markAsReadTimer, SIGNAL(timeout()), this, SLOT(markAsRead()));
m_loadingSpinner = new Spinner(this);
m_loadingSpinner->setText(tr("Fetching\nMessage"));
m_loadingSpinner->setType(Spinner::Sun);
}
