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// Copyright (C) 2016 The Qt Company Ltd.
// Copyright (C) 2014 John Layt <jlayt@kde.org>
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "qcupsprintersupport_p.h"
#include "qcupsprintengine_p.h"
#include "qppdprintdevice.h"
#include <private/qprinterinfo_p.h>
#include <private/qprintdevice_p.h>
#include <QtPrintSupport/QPrinterInfo>
#if QT_CONFIG(cupspassworddialog)
#include <QGuiApplication>
#include <QDialog>
#include <QDialogButtonBox>
#include <QFormLayout>
#include <QLabel>
#include <QLineEdit>
#endif // QT_CONFIG(cupspassworddialog)
#include <cups/ppd.h>
#ifndef QT_LINUXBASE // LSB merges everything into cups.h
# include <cups/language.h>
#endif
QT_BEGIN_NAMESPACE
#if QT_CONFIG(cupspassworddialog)
static const char *getPasswordCB(const char */*prompt*/, http_t *http, const char */*method*/, const char *resource, void */*user_data*/)
{
// cups doesn't free the const char * we return so keep around
// the last password so we don't leak memory if called multiple times.
static QByteArray password;
// prompt is always "Password for %s on %s? " but we can't use it since we allow the user to change the user.
// That is fine because cups always calls cupsUser after calling this callback.
// We build our own prompt with the hostname (if not localhost) and the resource that is being used
char hostname[HTTP_MAX_HOST];
httpGetHostname(http, hostname, HTTP_MAX_HOST);
const QString username = QString::fromLocal8Bit(cupsUser());
QDialog dialog;
dialog.setWindowTitle(QCoreApplication::translate("QCupsPrinterSupport", "Authentication Needed"));
QFormLayout *layout = new QFormLayout(&dialog);
layout->setSizeConstraint(QLayout::SetFixedSize);
QLineEdit *usernameLE = new QLineEdit();
usernameLE->setText(username);
QLineEdit *passwordLE = new QLineEdit();
passwordLE->setEchoMode(QLineEdit::Password);
QString resourceString = QString::fromLocal8Bit(resource);
if (resourceString.startsWith(QStringLiteral("/printers/")))
resourceString = resourceString.mid(QStringLiteral("/printers/").size());
QLabel *label = new QLabel();
if (hostname == QStringLiteral("localhost")) {
label->setText(QCoreApplication::translate("QCupsPrinterSupport", "Authentication needed to use %1.").arg(resourceString));
} else {
label->setText(QCoreApplication::translate("QCupsPrinterSupport", "Authentication needed to use %1 on %2.").arg(resourceString).arg(hostname));
label->setWordWrap(true);
}
layout->addRow(label);
layout->addRow(new QLabel(QCoreApplication::translate("QCupsPrinterSupport", "Username:")), usernameLE);
layout->addRow(new QLabel(QCoreApplication::translate("QCupsPrinterSupport", "Password:")), passwordLE);
QDialogButtonBox *buttonBox = new QDialogButtonBox(QDialogButtonBox::Ok | QDialogButtonBox::Cancel);
layout->addRow(buttonBox);
QObject::connect(buttonBox, &QDialogButtonBox::accepted, &dialog, &QDialog::accept);
QObject::connect(buttonBox, &QDialogButtonBox::rejected, &dialog, &QDialog::reject);
passwordLE->setFocus();
if (dialog.exec() != QDialog::Accepted)
return nullptr;
if (usernameLE->text() != username)
cupsSetUser(usernameLE->text().toLocal8Bit().constData());
password = passwordLE->text().toLocal8Bit();
return password.constData();
}
#endif // QT_CONFIG(cupspassworddialog)
QCupsPrinterSupport::QCupsPrinterSupport()
: QPlatformPrinterSupport()
{
#if QT_CONFIG(cupspassworddialog)
// Only show password dialog if GUI application
if (qobject_cast<QGuiApplication*>(QCoreApplication::instance()))
cupsSetPasswordCB2(getPasswordCB, nullptr /* user_data */ );
#endif // QT_CONFIG(cupspassworddialog)
}
QCupsPrinterSupport::~QCupsPrinterSupport()
{
}
QPrintEngine *QCupsPrinterSupport::createNativePrintEngine(QPrinter::PrinterMode printerMode, const QString &deviceId)
{
return new QCupsPrintEngine(printerMode, (deviceId.isEmpty() ? defaultPrintDeviceId() : deviceId));
}
QPaintEngine *QCupsPrinterSupport::createPaintEngine(QPrintEngine *engine, QPrinter::PrinterMode printerMode)
{
Q_UNUSED(printerMode);
return static_cast<QCupsPrintEngine *>(engine);
}
QPrintDevice QCupsPrinterSupport::createPrintDevice(const QString &id)
{
return QPlatformPrinterSupport::createPrintDevice(new QPpdPrintDevice(id));
}
QStringList QCupsPrinterSupport::availablePrintDeviceIds() const
{
QStringList list;
cups_dest_t *dests;
int count = cupsGetDests(&dests);
list.reserve(count);
for (int i = 0; i < count; ++i) {
QString printerId = QString::fromLocal8Bit(dests[i].name);
if (dests[i].instance)
printerId += u'/' + QString::fromLocal8Bit(dests[i].instance);
list.append(printerId);
}
cupsFreeDests(count, dests);
return list;
}
QString QCupsPrinterSupport::defaultPrintDeviceId() const
{
return staticDefaultPrintDeviceId();
}
QString QCupsPrinterSupport::staticDefaultPrintDeviceId()
{
QString printerId;
cups_dest_t *dests;
int count = cupsGetDests(&dests);
for (int i = 0; i < count; ++i) {
if (dests[i].is_default) {
printerId = QString::fromLocal8Bit(dests[i].name);
if (dests[i].instance) {
printerId += u'/' + QString::fromLocal8Bit(dests[i].instance);
break;
}
}
}
cupsFreeDests(count, dests);
return printerId;
}
QT_END_NAMESPACE
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