partitionmanager/src/util/helpers.cpp

269 lines
9.1 KiB
C++

/***************************************************************************
* Copyright (C) 2008, 2009, 2010 by Volker Lanz <vl@fidra.de> *
* *
* 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 2 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, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
***************************************************************************/
#include "util/helpers.h"
#include "util/globallog.h"
#include "backend/corebackendmanager.h"
#include "ops/operation.h"
#include <KAboutData>
#include <KMessageBox>
#include <KLocalizedString>
#include <Solid/Device>
#include <QAction>
#include <QApplication>
#include <QCollator>
#include <QFileInfo>
#include <QIcon>
#include <QMenu>
#include <QHeaderView>
#include <QPainter>
#include <QPixmap>
#include <QProcess>
#include <QStandardPaths>
#include <QRect>
#include <QTreeWidget>
#include <config.h>
#include <unistd.h>
#include <signal.h>
void registerMetaTypes()
{
qRegisterMetaType<Operation*>("Operation*");
qRegisterMetaType<Log::Level>("Log::Level");
}
static QString suCommand()
{
const QString candidates[] = { QStringLiteral("kdesu"), QStringLiteral("kdesudo"), QStringLiteral("gksudo"), QStringLiteral("gksu") };
QString rval;
for (quint32 i = 0; i < sizeof(candidates) / sizeof(candidates[0]); i++)
{
rval = QStandardPaths::findExecutable(candidates[i]);
if (QFileInfo(rval).isExecutable())
return rval;
}
return QString();
}
bool checkPermissions()
{
if (geteuid() != 0)
{
// only try to gain root privileges if we have a valid (kde|gk)su(do) command and
// we did not try so before: the dontsu-option is there to make sure there are no
// endless loops of calling the same non-working (kde|gk)su(do) binary again and again.
if (!suCommand().isEmpty() && !QCoreApplication::arguments().contains(QLatin1String("--dontsu")))
{
QStringList argList;
const QString suCmd = suCommand();
// kdesu broke backward compatibility at some point and now only works with "-c";
// kdesudo accepts either (with or without "-c"), but the gk* helpers only work
// without. kdesu maintainers won't fix their app, so we need to work around that here.
if (suCmd.indexOf(QStringLiteral("kdesu")) != -1)
argList << QStringLiteral("-c");
argList << QCoreApplication::arguments() << QStringLiteral(" --dontsu");
if (QProcess::execute(suCmd, argList) == 0)
return false;
}
return KMessageBox::warningContinueCancel(NULL, xi18nc("@info",
"<para><warning>You do not have administrative privileges.</warning></para>"
"<para>It is possible to run <application>%1</application> without these privileges. "
"You will, however, <emphasis>not</emphasis> be allowed to apply operations.</para>"
"<para>Do you want to continue running <application>%1</application>?</para>",
QGuiApplication::applicationDisplayName()),
i18nc("@title:window", "No administrative privileges"),
KGuiItem(i18nc("@action:button", "Run without administrative privileges"), QStringLiteral("arrow-right")),
KStandardGuiItem::cancel(),
QStringLiteral("runWithoutRootPrivileges")) == KMessageBox::Continue;
}
return true;
}
KAboutData* createPartitionManagerAboutData()
{
KAboutData* about = new KAboutData(
QStringLiteral("partitionmanager"),
xi18nc("@title", "<application>KDE Partition Manager</application>"),
QStringLiteral(VERSION),
i18nc("@title", "Manage your disks, partitions and file systems"),
KAboutLicense::GPL,
i18nc("@info:credit", "(c) 2008, 2009, 2010, 2011 Volker Lanz"));
about->setOrganizationDomain(QByteArray("kde.org"));
about->setProgramIconName(QStringLiteral("partitionmanager"));
about->setProductName(QByteArray("partitionmanager"));
about->addAuthor(i18nc("@info:credit", "Volker Lanz"), i18nc("@info:credit", "Former maintainer"));
about->addAuthor(i18nc("@info:credit", "Andrius Štikonas"), i18nc("@info:credit", "Developer"), QStringLiteral("andrius@stikonas.eu"));
about->setHomepage(QStringLiteral("http://www.partitionmanager.org"));
about->addCredit(i18n("Hugo Pereira Da Costa"), i18nc("@info:credit", "Partition Widget Design"), QStringLiteral("hugo@oxygen-icons.org"));
return about;
}
bool caseInsensitiveLessThan(const QString& s1, const QString& s2)
{
return s1.toLower() < s2.toLower();
}
bool naturalLessThan(const QString& s1, const QString& s2)
{
QCollator c;
c.setNumericMode(true);
c.setCaseSensitivity(Qt::CaseSensitive);
return c.compare(s1, s2) < 0;
}
QIcon createFileSystemColor(FileSystem::Type type, quint32 size)
{
QPixmap pixmap(size, size);
QPainter painter(&pixmap);
painter.setPen(QColor(0, 0, 0));
painter.setBrush(Config::fileSystemColorCode(type));
painter.drawRect(QRect(0, 0, pixmap.width() - 1, pixmap.height() - 1));
painter.end();
return QIcon(pixmap);
}
void showColumnsContextMenu(const QPoint& p, QTreeWidget& tree)
{
QMenu headerMenu(i18nc("@title:menu", "Columns"));
QHeaderView* header = tree.header();
for (qint32 i = 0; i < tree.model()->columnCount(); i++)
{
const int idx = header->logicalIndex(i);
const QString text = tree.model()->headerData(idx, Qt::Horizontal).toString();
QAction* action = headerMenu.addAction(text);
action->setCheckable(true);
action->setChecked(!header->isSectionHidden(idx));
action->setData(idx);
action->setEnabled(idx > 0);
}
QAction* action = headerMenu.exec(tree.header()->mapToGlobal(p));
if (action != NULL)
{
const bool hidden = !action->isChecked();
tree.setColumnHidden(action->data().toInt(), hidden);
if (!hidden)
tree.resizeColumnToContents(action->data().toInt());
}
}
bool loadBackend()
{
if (CoreBackendManager::self()->load(Config::backend()) == false)
{
if (CoreBackendManager::self()->load(CoreBackendManager::defaultBackendName()))
{
KMessageBox::sorry(NULL,
xi18nc("@info", "<para>The configured backend plugin \"%1\" could not be loaded.</para>"
"<para>Loading the default backend plugin \"%2\" instead.</para>",
Config::backend(), CoreBackendManager::defaultBackendName()),
i18nc("@title:window", "Error: Could Not Load Backend Plugin"));
Config::setBackend(CoreBackendManager::defaultBackendName());
}
else
{
KMessageBox::error(NULL,
xi18nc("@info", "<para>Neither the configured (\"%1\") nor the default (\"%2\") backend "
"plugin could be loaded.</para><para>Please check your installation.</para>",
Config::backend(), CoreBackendManager::defaultBackendName()),
i18nc("@title:window", "Error: Could Not Load Backend Plugin"));
return false;
}
}
return true;
}
bool checkAccessibleDevices()
{
if (getSolidDeviceList().empty())
{
KMessageBox::error(NULL,
xi18nc("@info", "<para>No usable devices could be found.</para><para>Make sure you have sufficient "
"privileges to access block devices on your system.</para>"),
i18nc("@title:window", "Error: No Usable Devices Found"));
return false;
}
return true;
}
QList<Solid::Device> getSolidDeviceList()
{
#ifdef ENABLE_UDISKS2
QString predicate = QStringLiteral("StorageVolume.usage == 'PartitionTable'");
#else
QString predicate = "[ [ [ StorageDrive.driveType == 'HardDisk' OR StorageDrive.driveType == 'CompactFlash'] OR "
"[ StorageDrive.driveType == 'MemoryStick' OR StorageDrive.driveType == 'SmartMedia'] ] OR "
"[ StorageDrive.driveType == 'SdMmc' OR StorageDrive.driveType == 'Xd'] ]";
#endif
QStringList argList;
int argc = argList.size();
if (argc > 0)
{
predicate = QStringLiteral(" [ ") + predicate + QStringLiteral(" AND ");
qint32 brackets = (argc + 1) / 2;
brackets = argc == 1 ? 0 : brackets;
for (qint32 i = 0; i < brackets; i++)
predicate += QStringLiteral("[ ");
bool right_bracket = false;
for (qint32 i = 0; i < argc; i++, right_bracket =! right_bracket)
{
predicate += QStringLiteral("Block.device == '%1' ").arg(argList[i]);
if (right_bracket)
predicate += i == 1 ? QStringLiteral("] ") : QStringLiteral("] ] ");
if (i < argc - 1)
predicate += QStringLiteral("OR ");
if (right_bracket && i != argc - 2 && i != argc - 1)
predicate += QStringLiteral("[ ");
}
predicate += right_bracket && brackets > 0 ? QStringLiteral("] ]") : QStringLiteral("]");
}
return Solid::Device::listFromQuery(predicate);
}