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/*****************************************************************
* drkonqi - The KDE Crash Handler
*
* Copyright (C) 2000-2003 Hans Petter Bieker <bieker@kde.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*****************************************************************/
#include <qlayout.h>
#include <qhbox.h>
#include <qlabel.h>
#include <kdialog.h>
#include <klocale.h>
#include <kglobal.h>
#include <kglobalsettings.h>
#include <kfiledialog.h>
#include <kmessagebox.h>
#include <kpushbutton.h>
#include <kstdguiitem.h>
#include <ktextbrowser.h>
#include <ktempfile.h>
#include "backtrace.h"
#include "krashconf.h"
#include "debugger.h"
#include "debugger.moc"
KrashDebugger :: KrashDebugger (const KrashConfig *krashconf, QWidget *parent, const char *name)
: QWidget( parent, name ),
m_krashconf(krashconf),
m_proctrace(0)
{
QVBoxLayout *vbox = new QVBoxLayout( this, 0, KDialog::marginHint() );
vbox->setAutoAdd(TRUE);
m_backtrace = new KTextBrowser(this);
m_backtrace->setTextFormat(Qt::PlainText);
m_backtrace->setFont(KGlobalSettings::fixedFont());
QWidget *w = new QWidget( this );
( new QHBoxLayout( w, 0, KDialog::marginHint() ) )->setAutoAdd( true );
m_status = new QLabel( w );
m_status->setSizePolicy( QSizePolicy( QSizePolicy::Expanding, QSizePolicy::Preferred ) );
//m_copyButton = new KPushButton( KStdGuiItem::copy(), w );
KGuiItem item( i18n( "C&opy" ), QString::fromLatin1( "editcopy" ) );
m_copyButton = new KPushButton( item, w );
connect( m_copyButton, SIGNAL( clicked() ), this, SLOT( slotCopy() ) );
m_copyButton->setEnabled( false );
m_saveButton = new KPushButton( m_krashconf->safeMode() ? KStdGuiItem::save() : KStdGuiItem::saveAs(), w );
connect( m_saveButton, SIGNAL( clicked() ), this, SLOT( slotSave() ) );
m_saveButton->setEnabled( false );
}
KrashDebugger :: ~KrashDebugger()
{
// This will SIGKILL gdb and SIGCONT program which crashed.
// delete m_proctrace;
}
void KrashDebugger :: slotDone(const QString& str)
{
m_status->setText(i18n("Done."));
m_copyButton->setEnabled( true );
m_saveButton->setEnabled( true );
m_backtrace->setText( m_prependText + str ); // replace with possibly post-processed backtrace
}
void KrashDebugger :: slotCopy()
{
m_backtrace->selectAll();
m_backtrace->copy();
}
void KrashDebugger :: slotSave()
{
if (m_krashconf->safeMode())
{
KTempFile tf(QString::fromAscii("/tmp/"), QString::fromAscii(".kcrash"), 0600);
if (!tf.status())
{
*tf.textStream() << m_backtrace->text();
tf.close();
KMessageBox::information(this, i18n("Backtrace saved to %1").arg(tf.name()));
}
else
{
KMessageBox::sorry(this, i18n("Cannot create a file in which to save the backtrace"));
}
}
else
{
QString defname = m_krashconf->execName() + QString::fromLatin1( ".kcrash" );
if( defname.contains( '/' ))
defname = defname.mid( defname.findRev( '/' ) + 1 );
QString filename = KFileDialog::getSaveFileName(defname, QString::null, this, i18n("Select Filename"));
if (!filename.isEmpty())
{
QFile f(filename);
if (f.exists()) {
if (KMessageBox::Cancel ==
KMessageBox::warningContinueCancel( 0,
i18n( "A file named \"%1\" already exists. "
"Are you sure you want to overwrite it?" ).arg( filename ),
i18n( "Overwrite File?" ),
i18n( "&Overwrite" ) ))
return;
}
if (f.open(IO_WriteOnly))
{
QTextStream ts(&f);
ts << m_backtrace->text();
f.close();
}
else
{
KMessageBox::sorry(this, i18n("Cannot open file %1 for writing").arg(filename));
}
}
}
}
void KrashDebugger :: slotSomeError()
{
m_status->setText(i18n("Unable to create a valid backtrace."));
m_backtrace->setText(i18n("This backtrace appears to be of no use.\n"
"This is probably because your packages are built in a way "
"which prevents creation of proper backtraces, or the stack frame "
"was seriously corrupted in the crash.\n\n" )
+ m_backtrace->text());
}
void KrashDebugger :: slotAppend(const QString &str)
{
m_status->setText(i18n("Loading backtrace..."));
// append doesn't work here because it will add a newline as well
m_backtrace->setText(m_backtrace->text() + str);
}
void KrashDebugger :: showEvent(QShowEvent *e)
{
QWidget::showEvent(e);
startDebugger();
}
void KrashDebugger :: startDebugger()
{
// Only start one copy
if (m_proctrace || !m_backtrace->text().isEmpty())
return;
QString msg;
bool checks = performChecks( &msg );
if( !checks && !m_krashconf->disableChecks())
{
m_backtrace->setText( m_prependText +
i18n( "The following options are enabled:\n\n" )
+ msg
+ i18n( "\nAs the usage of these options is not recommended -"
" because they can, in rare cases, be responsible for KDE problems - a backtrace"
" will not be generated.\n"
"You need to turn these options off and reproduce"
" the problem again in order to get a backtrace.\n" ));
m_status->setText( i18n( "Backtrace will not be created."));
return;
}
if( !msg.isEmpty())
{
m_prependText += msg + '\n';
m_backtrace->setText( m_prependText );
}
m_status->setText(i18n("Loading symbols..."));
m_proctrace = new BackTrace(m_krashconf, this);
connect(m_proctrace, SIGNAL(append(const QString &)),
SLOT(slotAppend(const QString &)));
connect(m_proctrace, SIGNAL(done(const QString&)), SLOT(slotDone(const QString&)));
connect(m_proctrace, SIGNAL(someError()), SLOT(slotSomeError()));
m_proctrace->start();
}
// this function check for "dangerous" settings, returns false
// and message in case some of them are activated
bool KrashDebugger::performChecks( QString* msg )
{
bool ret = true;
KConfig kdedcfg( QString::fromLatin1( "kdedrc" ), true );
kdedcfg.setGroup( "General" );
if( kdedcfg.readBoolEntry( "DelayedCheck", false ))
{
// ret = false; it's not that dangerous
*msg += i18n( "System configuration startup check disabled.\n" );
}
return ret;
}
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