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tdebase/kdesktop/lock/lockdlg.cc

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//===========================================================================
//
// This file is part of the KDE project
//
// Copyright (c) 1999 Martin R. Jones <mjones@kde.org>
// Copyright (c) 2003 Chris Howells <howells@kde.org>
// Copyright (c) 2003 Oswald Buddenhagen <ossi@kde.org>
#include <config.h>
#include "lockprocess.h"
#include "lockdlg.h"
#include <kcheckpass.h>
#include <dmctl.h>
#include <kapplication.h>
#include <klocale.h>
#include <kpushbutton.h>
#include <kseparator.h>
#include <kstandarddirs.h>
#include <kglobalsettings.h>
#include <kconfig.h>
#include <kiconloader.h>
#include <kdesu/defaults.h>
#include <kpassdlg.h>
#include <kdebug.h>
#include <kuser.h>
#include <dcopref.h>
#include <kmessagebox.h>
#include <qlayout.h>
#include <qpushbutton.h>
#include <qmessagebox.h>
#include <qsimplerichtext.h>
#include <qlabel.h>
#include <qstringlist.h>
#include <qfontmetrics.h>
#include <qstyle.h>
#include <qapplication.h>
#include <qlistview.h>
#include <qheader.h>
#include <qcheckbox.h>
#include <ctype.h>
#include <unistd.h>
#include <stdlib.h>
#include <errno.h>
#include <pwd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <X11/Xutil.h>
#include <X11/keysym.h>
#include <fixx11h.h>
#ifndef AF_LOCAL
# define AF_LOCAL AF_UNIX
#endif
#define PASSDLG_HIDE_TIMEOUT 10000
//===========================================================================
//
// Simple dialog for entering a password.
//
PasswordDlg::PasswordDlg(LockProcess *parent, GreeterPluginHandle *plugin)
: QDialog(parent, "password dialog", true, WX11BypassWM),
mPlugin( plugin ),
mCapsLocked(-1),
mUnlockingFailed(false)
{
frame = new QFrame( this );
frame->setFrameStyle( QFrame::Panel | QFrame::Raised );
frame->setLineWidth( 2 );
QLabel *pixLabel = new QLabel( frame, "pixlabel" );
pixLabel->setPixmap(DesktopIcon("lock"));
KUser user;
QLabel *greetLabel = new QLabel( user.fullName().isEmpty() ?
i18n("<nobr><b>The session is locked</b><br>") :
i18n("<nobr><b>The session was locked by %1</b><br>").arg( user.fullName() ), frame );
mStatusLabel = new QLabel( "<b> </b>", frame );
mStatusLabel->setAlignment( QLabel::AlignCenter );
mLayoutButton = new QPushButton( frame );
mLayoutButton->setFlat( true );
KSeparator *sep = new KSeparator( KSeparator::HLine, frame );
mNewSessButton = new KPushButton( KGuiItem(i18n("Sw&itch User..."), "fork"), frame );
ok = new KPushButton( i18n("Unl&ock"), frame );
cancel = new KPushButton( KStdGuiItem::cancel(), frame );
greet = plugin->info->create( this, 0, this, mLayoutButton, QString::null,
KGreeterPlugin::Authenticate, KGreeterPlugin::ExUnlock );
QVBoxLayout *unlockDialogLayout = new QVBoxLayout( this );
unlockDialogLayout->addWidget( frame );
QHBoxLayout *layStatus = new QHBoxLayout( 0, 0, KDialog::spacingHint());
layStatus->addWidget( mStatusLabel );
layStatus->addWidget( mLayoutButton );
QHBoxLayout *layButtons = new QHBoxLayout( 0, 0, KDialog::spacingHint());
layButtons->addWidget( mNewSessButton );
layButtons->addStretch();
layButtons->addWidget( ok );
layButtons->addWidget( cancel );
frameLayout = new QGridLayout( frame, 1, 1, KDialog::marginHint(), KDialog::spacingHint() );
frameLayout->addMultiCellWidget( pixLabel, 0, 2, 0, 0, AlignTop );
frameLayout->addWidget( greetLabel, 0, 1 );
frameLayout->addItem( greet->getLayoutItem(), 1, 1 );
frameLayout->addLayout( layStatus, 2, 1 );
frameLayout->addMultiCellWidget( sep, 3, 3, 0, 1 );
frameLayout->addMultiCellLayout( layButtons, 4, 4, 0, 1 );
setTabOrder( ok, cancel );
setTabOrder( cancel, mNewSessButton );
setTabOrder( mNewSessButton, mLayoutButton );
connect(mLayoutButton, SIGNAL(clicked()), this, SLOT(layoutClicked()));
connect(cancel, SIGNAL(clicked()), SLOT(reject()));
connect(ok, SIGNAL(clicked()), SLOT(slotOK()));
connect(mNewSessButton, SIGNAL(clicked()), SLOT(slotSwitchUser()));
if (!DM().isSwitchable() || !kapp->authorize("switch_user"))
mNewSessButton->hide();
installEventFilter(this);
mFailedTimerId = 0;
mTimeoutTimerId = startTimer(PASSDLG_HIDE_TIMEOUT);
connect(qApp, SIGNAL(activity()), SLOT(slotActivity()) );
greet->start();
DCOPRef kxkb("kxkb", "kxkb");
if( !kxkb.isNull() ) {
layoutsList = kxkb.call("getLayoutsList");
QString currentLayout = kxkb.call("getCurrentLayout");
if( !currentLayout.isEmpty() && layoutsList.count() > 1 ) {
currLayout = layoutsList.find(currentLayout);
if (currLayout == layoutsList.end())
setLayoutText("err");
else
setLayoutText(*currLayout);
} else
mLayoutButton->hide();
} else {
mLayoutButton->hide(); // no kxkb running
}
capsLocked();
}
PasswordDlg::~PasswordDlg()
{
hide();
frameLayout->removeItem( greet->getLayoutItem() );
delete greet;
}
void PasswordDlg::layoutClicked()
{
if( ++currLayout == layoutsList.end() )
currLayout = layoutsList.begin();
DCOPRef kxkb("kxkb", "kxkb");
setLayoutText( kxkb.call("setLayout", *currLayout) ? *currLayout : "err" );
}
void PasswordDlg::setLayoutText( const QString &txt )
{
mLayoutButton->setText( txt );
QSize sz = mLayoutButton->fontMetrics().size( 0, txt );
int mrg = mLayoutButton->style().pixelMetric( QStyle::PM_ButtonMargin ) * 2;
mLayoutButton->setFixedSize( sz.width() + mrg, sz.height() + mrg );
}
void PasswordDlg::updateLabel()
{
if (mUnlockingFailed)
{
mStatusLabel->setPaletteForegroundColor(Qt::black);
mStatusLabel->setText(i18n("<b>Unlocking failed</b>"));
}
else
if (mCapsLocked)
{
mStatusLabel->setPaletteForegroundColor(Qt::red);
mStatusLabel->setText(i18n("<b>Warning: Caps Lock on</b>"));
}
else
{
mStatusLabel->setText("<b> </b>");
}
}
//---------------------------------------------------------------------------
//
// Handle timer events.
//
void PasswordDlg::timerEvent(QTimerEvent *ev)
{
if (ev->timerId() == mTimeoutTimerId)
{
reject();
}
else if (ev->timerId() == mFailedTimerId)
{
killTimer(mFailedTimerId);
mFailedTimerId = 0;
// Show the normal password prompt.
mUnlockingFailed = false;
updateLabel();
ok->setEnabled(true);
cancel->setEnabled(true);
mNewSessButton->setEnabled( true );
greet->revive();
greet->start();
}
}
bool PasswordDlg::eventFilter(QObject *, QEvent *ev)
{
if (ev->type() == QEvent::KeyPress || ev->type() == QEvent::KeyRelease)
capsLocked();
return false;
}
void PasswordDlg::slotActivity()
{
if (mTimeoutTimerId) {
killTimer(mTimeoutTimerId);
mTimeoutTimerId = startTimer(PASSDLG_HIDE_TIMEOUT);
}
}
////// kckeckpass interface code
int PasswordDlg::Reader (void *buf, int count)
{
int ret, rlen;
for (rlen = 0; rlen < count; ) {
dord:
ret = ::read (sFd, (void *)((char *)buf + rlen), count - rlen);
if (ret < 0) {
if (errno == EINTR)
goto dord;
if (errno == EAGAIN)
break;
return -1;
}
if (!ret)
break;
rlen += ret;
}
return rlen;
}
bool PasswordDlg::GRead (void *buf, int count)
{
return Reader (buf, count) == count;
}
bool PasswordDlg::GWrite (const void *buf, int count)
{
return ::write (sFd, buf, count) == count;
}
bool PasswordDlg::GSendInt (int val)
{
return GWrite (&val, sizeof(val));
}
bool PasswordDlg::GSendStr (const char *buf)
{
int len = buf ? ::strlen (buf) + 1 : 0;
return GWrite (&len, sizeof(len)) && GWrite (buf, len);
}
bool PasswordDlg::GSendArr (int len, const char *buf)
{
return GWrite (&len, sizeof(len)) && GWrite (buf, len);
}
bool PasswordDlg::GRecvInt (int *val)
{
return GRead (val, sizeof(*val));
}
bool PasswordDlg::GRecvArr (char **ret)
{
int len;
char *buf;
if (!GRecvInt(&len))
return false;
if (!len) {
*ret = 0;
return true;
}
if (!(buf = (char *)::malloc (len)))
return false;
*ret = buf;
return GRead (buf, len);
}
void PasswordDlg::reapVerify()
{
::close( sFd );
int status;
::waitpid( sPid, &status, 0 );
if (WIFEXITED(status))
switch (WEXITSTATUS(status)) {
case AuthOk:
greet->succeeded();
accept();
return;
case AuthBad:
greet->failed();
mUnlockingFailed = true;
updateLabel();
mFailedTimerId = startTimer(1500);
ok->setEnabled(false);
cancel->setEnabled(false);
mNewSessButton->setEnabled( false );
return;
case AuthAbort:
return;
}
cantCheck();
}
void PasswordDlg::handleVerify()
{
int ret;
char *arr;
while (GRecvInt( &ret )) {
switch (ret) {
case ConvGetBinary:
if (!GRecvArr( &arr ))
break;
greet->binaryPrompt( arr, false );
if (arr)
::free( arr );
return;
case ConvGetNormal:
if (!GRecvArr( &arr ))
break;
greet->textPrompt( arr, true, false );
if (arr)
::free( arr );
return;
case ConvGetHidden:
if (!GRecvArr( &arr ))
break;
greet->textPrompt( arr, false, false );
if (arr)
::free( arr );
return;
case ConvPutInfo:
if (!GRecvArr( &arr ))
break;
if (!greet->textMessage( arr, false ))
static_cast< LockProcess* >(parent())->msgBox( QMessageBox::Information, QString::fromLocal8Bit( arr ) );
::free( arr );
continue;
case ConvPutError:
if (!GRecvArr( &arr ))
break;
if (!greet->textMessage( arr, true ))
static_cast< LockProcess* >(parent())->msgBox( QMessageBox::Warning, QString::fromLocal8Bit( arr ) );
::free( arr );
continue;
}
break;
}
reapVerify();
}
////// greeter plugin callbacks
void PasswordDlg::gplugReturnText( const char *text, int tag )
{
GSendStr( text );
if (text)
GSendInt( tag );
handleVerify();
}
void PasswordDlg::gplugReturnBinary( const char *data )
{
if (data) {
unsigned const char *up = (unsigned const char *)data;
int len = up[3] | (up[2] << 8) | (up[1] << 16) | (up[0] << 24);
if (!len)
GSendArr( 4, data );
else
GSendArr( len, data );
} else
GSendArr( 0, 0 );
handleVerify();
}
void PasswordDlg::gplugSetUser( const QString & )
{
// ignore ...
}
void PasswordDlg::cantCheck()
{
greet->failed();
static_cast< LockProcess* >(parent())->msgBox( QMessageBox::Critical,
i18n("Cannot unlock the session because the authentication system failed to work;\n"
"you must kill kdesktop_lock (pid %1) manually.").arg(getpid()) );
greet->revive();
}
//---------------------------------------------------------------------------
//
// Starts the kcheckpass process to check the user's password.
//
void PasswordDlg::gplugStart()
{
int sfd[2];
char fdbuf[16];
if (::socketpair(AF_LOCAL, SOCK_STREAM, 0, sfd)) {
cantCheck();
return;
}
if ((sPid = ::fork()) < 0) {
::close(sfd[0]);
::close(sfd[1]);
cantCheck();
return;
}
if (!sPid) {
::close(sfd[0]);
sprintf(fdbuf, "%d", sfd[1]);
execlp("kcheckpass", "kcheckpass",
#ifdef HAVE_PAM
"-c", KSCREENSAVER_PAM_SERVICE,
#endif
"-m", mPlugin->info->method,
"-S", fdbuf,
(char *)0);
exit(20);
}
::close(sfd[1]);
sFd = sfd[0];
handleVerify();
}
void PasswordDlg::gplugActivity()
{
slotActivity();
}
void PasswordDlg::gplugMsgBox( QMessageBox::Icon type, const QString &text )
{
QDialog dialog( this, 0, true, WX11BypassWM );
QFrame *winFrame = new QFrame( &dialog );
winFrame->setFrameStyle( QFrame::WinPanel | QFrame::Raised );
winFrame->setLineWidth( 2 );
QVBoxLayout *vbox = new QVBoxLayout( &dialog );
vbox->addWidget( winFrame );
QLabel *label1 = new QLabel( winFrame );
label1->setPixmap( QMessageBox::standardIcon( type ) );
QLabel *label2 = new QLabel( text, winFrame );
KPushButton *button = new KPushButton( KStdGuiItem::ok(), winFrame );
button->setDefault( true );
button->setSizePolicy( QSizePolicy( QSizePolicy::Preferred, QSizePolicy::Preferred ) );
connect( button, SIGNAL( clicked() ), SLOT( accept() ) );
QGridLayout *grid = new QGridLayout( winFrame, 2, 2, 10 );
grid->addWidget( label1, 0, 0, Qt::AlignCenter );
grid->addWidget( label2, 0, 1, Qt::AlignCenter );
grid->addMultiCellWidget( button, 1,1, 0,1, Qt::AlignCenter );
static_cast< LockProcess* >(parent())->execDialog( &dialog );
}
void PasswordDlg::slotOK()
{
greet->next();
}
void PasswordDlg::show()
{
QDialog::show();
QApplication::flushX();
}
void PasswordDlg::slotStartNewSession()
{
if (!KMessageBox::shouldBeShownContinue( ":confirmNewSession" )) {
DM().startReserve();
return;
}
killTimer(mTimeoutTimerId);
mTimeoutTimerId = 0;
QDialog *dialog = new QDialog( this, "warnbox", true, WX11BypassWM );
QFrame *winFrame = new QFrame( dialog );
winFrame->setFrameStyle( QFrame::WinPanel | QFrame::Raised );
winFrame->setLineWidth( 2 );
QVBoxLayout *vbox = new QVBoxLayout( dialog );
vbox->addWidget( winFrame );
QLabel *label1 = new QLabel( winFrame );
label1->setPixmap( QMessageBox::standardIcon( QMessageBox::Warning ) );
QString qt_text =
i18n("You have chosen to open another desktop session "
"instead of resuming the current one.<br>"
"The current session will be hidden "
"and a new login screen will be displayed.<br>"
"An F-key is assigned to each session; "
"F%1 is usually assigned to the first session, "
"F%2 to the second session and so on. "
"You can switch between sessions by pressing "
"Ctrl, Alt and the appropriate F-key at the same time. "
"Additionally, the KDE Panel and Desktop menus have "
"actions for switching between sessions.")
.arg(7).arg(8);
QLabel *label2 = new QLabel( qt_text, winFrame );
KPushButton *okbutton = new KPushButton( KGuiItem(i18n("&Start New Session"), "fork"), winFrame );
okbutton->setDefault( true );
connect( okbutton, SIGNAL( clicked() ), dialog, SLOT( accept() ) );
KPushButton *cbutton = new KPushButton( KStdGuiItem::cancel(), winFrame );
connect( cbutton, SIGNAL( clicked() ), dialog, SLOT( reject() ) );
QBoxLayout *mbox = new QVBoxLayout( winFrame, KDialog::marginHint(), KDialog::spacingHint() );
QGridLayout *grid = new QGridLayout( mbox, 2, 2, 2 * KDialog::spacingHint() );
grid->setMargin( KDialog::marginHint() );
grid->addWidget( label1, 0, 0, Qt::AlignCenter );
grid->addWidget( label2, 0, 1, Qt::AlignCenter );
QCheckBox *cb = new QCheckBox( i18n("&Do not ask again"), winFrame );
grid->addMultiCellWidget( cb, 1,1, 0,1 );
QBoxLayout *hbox = new QHBoxLayout( mbox, KDialog::spacingHint() );
hbox->addStretch( 1 );
hbox->addWidget( okbutton );
hbox->addStretch( 1 );
hbox->addWidget( cbutton );
hbox->addStretch( 1 );
// stolen from kmessagebox
int pref_width = 0;
int pref_height = 0;
// Calculate a proper size for the text.
{
QSimpleRichText rt(qt_text, dialog->font());
QRect rect = KGlobalSettings::desktopGeometry(dialog);
pref_width = rect.width() / 3;
rt.setWidth(pref_width);
int used_width = rt.widthUsed();
pref_height = rt.height();
if (used_width <= pref_width)
{
while(true)
{
int new_width = (used_width * 9) / 10;
rt.setWidth(new_width);
int new_height = rt.height();
if (new_height > pref_height)
break;
used_width = rt.widthUsed();
if (used_width > new_width)
break;
}
pref_width = used_width;
}
else
{
if (used_width > (pref_width *2))
pref_width = pref_width *2;
else
pref_width = used_width;
}
}
label2->setFixedSize(QSize(pref_width+10, pref_height));
int ret = static_cast< LockProcess* >( parent())->execDialog( dialog );
delete dialog;
if (ret == QDialog::Accepted) {
if (cb->isChecked())
KMessageBox::saveDontShowAgainContinue( ":confirmNewSession" );
DM().startReserve();
}
mTimeoutTimerId = startTimer(PASSDLG_HIDE_TIMEOUT);
}
class LockListViewItem : public QListViewItem {
public:
LockListViewItem( QListView *parent,
const QString &sess, const QString &loc, int _vt )
: QListViewItem( parent )
, vt( _vt )
{
setText( 0, sess );
setText( 1, loc );
}
int vt;
};
void PasswordDlg::slotSwitchUser()
{
int p = 0;
DM dm;
QDialog dialog( this, "sessbox", true, WX11BypassWM );
QFrame *winFrame = new QFrame( &dialog );
winFrame->setFrameStyle( QFrame::WinPanel | QFrame::Raised );
winFrame->setLineWidth( 2 );
QBoxLayout *vbox = new QVBoxLayout( &dialog );
vbox->addWidget( winFrame );
QBoxLayout *hbox = new QHBoxLayout( winFrame, KDialog::marginHint(), KDialog::spacingHint() );
QBoxLayout *vbox1 = new QVBoxLayout( hbox, KDialog::spacingHint() );
QBoxLayout *vbox2 = new QVBoxLayout( hbox, KDialog::spacingHint() );
KPushButton *btn;
SessList sess;
if (dm.localSessions( sess )) {
lv = new QListView( winFrame );
connect( lv, SIGNAL(doubleClicked(QListViewItem *, const QPoint&, int)), SLOT(slotSessionActivated()) );
connect( lv, SIGNAL(doubleClicked(QListViewItem *, const QPoint&, int)), &dialog, SLOT(reject()) );
lv->setAllColumnsShowFocus( true );
lv->addColumn( i18n("Session") );
lv->addColumn( i18n("Location") );
lv->setColumnWidthMode( 0, QListView::Maximum );
lv->setColumnWidthMode( 1, QListView::Maximum );
QListViewItem *itm = 0;
QString user, loc;
int ns = 0;
for (SessList::ConstIterator it = sess.begin(); it != sess.end(); ++it) {
DM::sess2Str2( *it, user, loc );
itm = new LockListViewItem( lv, user, loc, (*it).vt );
if (!(*it).vt)
itm->setEnabled( false );
if ((*it).self) {
lv->setCurrentItem( itm );
itm->setSelected( true );
}
ns++;
}
int fw = lv->frameWidth() * 2;
QSize hds( lv->header()->sizeHint() );
lv->setMinimumWidth( fw + hds.width() +
(ns > 10 ? style().pixelMetric(QStyle::PM_ScrollBarExtent) : 0 ) );
lv->setFixedHeight( fw + hds.height() +
itm->height() * (ns < 6 ? 6 : ns > 10 ? 10 : ns) );
lv->header()->adjustHeaderSize();
vbox1->addWidget( lv );
btn = new KPushButton( KGuiItem(i18n("session", "&Activate"), "fork"), winFrame );
connect( btn, SIGNAL(clicked()), SLOT(slotSessionActivated()) );
connect( btn, SIGNAL(clicked()), &dialog, SLOT(reject()) );
vbox2->addWidget( btn );
vbox2->addStretch( 2 );
}
if (kapp->authorize("start_new_session") && (p = dm.numReserve()) >= 0)
{
btn = new KPushButton( KGuiItem(i18n("Start &New Session"), "fork"), winFrame );
connect( btn, SIGNAL(clicked()), SLOT(slotStartNewSession()) );
connect( btn, SIGNAL(clicked()), &dialog, SLOT(reject()) );
if (!p)
btn->setEnabled( false );
vbox2->addWidget( btn );
vbox2->addStretch( 1 );
}
btn = new KPushButton( KStdGuiItem::cancel(), winFrame );
connect( btn, SIGNAL(clicked()), &dialog, SLOT(reject()) );
vbox2->addWidget( btn );
static_cast< LockProcess* >(parent())->execDialog( &dialog );
}
void PasswordDlg::slotSessionActivated()
{
LockListViewItem *itm = (LockListViewItem *)lv->currentItem();
if (itm && itm->vt > 0)
DM().switchVT( itm->vt );
}
void PasswordDlg::capsLocked()
{
unsigned int lmask;
Window dummy1, dummy2;
int dummy3, dummy4, dummy5, dummy6;
XQueryPointer(qt_xdisplay(), DefaultRootWindow( qt_xdisplay() ), &dummy1, &dummy2, &dummy3, &dummy4, &dummy5, &dummy6, &lmask);
mCapsLocked = lmask & LockMask;
updateLabel();
}
#include "lockdlg.moc"
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