kleopatra/crlview.cpp

   1 /*
   2     crlview.cpp
   3
   4     This file is part of Kleopatra, the KDE keymanager
   5     Copyright (c) 2001,2002,2004 Klarälvdalens Datakonsult AB
   6
   7     Kleopatra is free software; you can redistribute it and/or modify
   8     it under the terms of the GNU General Public License as published by
   9     the Free Software Foundation; either version 2 of the License, or
  10     (at your option) any later version.
  11
  12     Kleopatra is distributed in the hope that it will be useful,
  13     but WITHOUT ANY WARRANTY; without even the implied warranty of
  14     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15     General Public License for more details.
  16
  17     You should have received a copy of the GNU General Public License
  18     along with this program; if not, write to the Free Software
  19     Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  20
  21     In addition, as a special exception, the copyright holders give
  22     permission to link the code of this program with any edition of
  23     the Qt library by Trolltech AS, Norway (or with modified versions
  24     of Qt that use the same license as Qt), and distribute linked
  25     combinations including the two.  You must obey the GNU General
  26     Public License in all respects for all of the code used other than
  27     Qt.  If you modify this file, you may extend this exception to
  28     your version of the file, but you are not obligated to do so.  If
  29     you do not wish to do so, delete this exception statement from
  30     your version.
  31 */
  32
  33 #include <config-kleopatra.h>
  34
  35 #include "crlview.h"
  36
  37 #include <klocale.h>
  38 #include <kprocess.h>
  39 #include <kmessagebox.h>
  40 #include <kpushbutton.h>
  41 #include <KStandardGuiItem>
  42 #include <kglobalsettings.h>
  43
  44 #include <QLayout>
  45 #include <QLabel>
  46 #include <qtextedit.h>
  47 #include <QFontMetrics>
  48 #include <QTimer>
  49 //Added by qt3to4:
  50 #include <QVBoxLayout>
  51 #include <QHBoxLayout>
  52 #include <QCloseEvent>
  53
  54 CRLView::CRLView( QWidget* parent )
  55   : QDialog( parent ), _process(0)
  56 {
  57   QVBoxLayout* topLayout = new QVBoxLayout( this );
  58   topLayout->setSpacing( 4 );
  59   topLayout->setMargin( 10 );
  60
  61   topLayout->addWidget( new QLabel( i18n("CRL cache dump:"), this ) );
  62
  63   _textView = new QTextEdit( this );
  64   _textView->setFont( KGlobalSettings::fixedFont() );
  65   _textView->setReadOnly(true);
  66   topLayout->addWidget( _textView );
  67
  68   QHBoxLayout* hbLayout = new QHBoxLayout();
  69   topLayout->addItem( hbLayout );
  70
  71   _updateButton = new KPushButton( i18n("&Update"), this );
  72   _closeButton = new KPushButton( KStandardGuiItem::close(), this );
  73
  74   hbLayout->addWidget( _updateButton );
  75   hbLayout->addStretch();
  76   hbLayout->addWidget( _closeButton );
  77
  78   // connections:
  79   connect( _updateButton, SIGNAL(clicked()),
  80            this, SLOT(slotUpdateView()) );
  81   connect( _closeButton, SIGNAL(clicked()),
  82            this, SLOT(close()) );
  83
  84   resize( _textView->fontMetrics().width( 'M' ) * 80,
  85           _textView->fontMetrics().lineSpacing() * 25 );
  86
  87   _timer = new QTimer( this );
  88   connect( _timer, SIGNAL(timeout()), SLOT(slotAppendBuffer()) );
  89 }
  90
  91 CRLView::~CRLView()
  92 {
  93   delete _process; _process = 0;
  94 }
  95
  96 void CRLView::closeEvent( QCloseEvent * e ) {
  97   QDialog::closeEvent( e );
  98   delete _process; _process = 0;
  99 }
 100
 101 void CRLView::slotUpdateView()
 102 {
 103   _updateButton->setEnabled( false );
 104   _textView->clear();
 105   _buffer.clear();
 106   if( !_process ) {
 107     _process = new KProcess();
 108     *_process << "gpgsm" << "--call-dirmngr" << "listcrls";
 109     connect( _process, SIGNAL(readyReadStandardOutput()), this, SLOT(slotReadStdout()));
 110     connect( _process, SIGNAL(finished(int,QProcess::ExitStatus)),
 111              this, SLOT(slotProcessExited(int,QProcess::ExitStatus)));
 112   }
 113   if( _process->state() == QProcess::Running ) _process->kill();
 114   _process->setOutputChannelMode(KProcess::OnlyStdoutChannel);
 115   _process->start();
 116   if( !_process->waitForStarted()){
 117     KMessageBox::error( this, i18n( "Unable to start gpgsm process. Please check your installation." ), i18n( "Certificate Manager Error" ) );
 118     processExited();
 119    }
 120   _timer->start( 1000 );
 121 }
 122
 123 void CRLView::slotReadStdout()
 124 {
 125   _buffer.append( _process->readAllStandardOutput() );
 126 }
 127
 128 void CRLView::slotAppendBuffer() {
 129   _textView->append( _buffer );
 130   _buffer.clear();
 131 }
 132
 133 void CRLView::processExited()
 134 {
 135   _timer->stop();
 136   slotAppendBuffer();
 137   _updateButton->setEnabled( true );
 138 }
 139
 140
 141 void CRLView::slotProcessExited(int, QProcess::ExitStatus _status)
 142 {
 143   processExited();
 144   if( _status != QProcess::NormalExit ) {
 145     KMessageBox::error( this, i18n( "The GpgSM process ended prematurely because of an unexpected error." ), i18n( "Certificate Manager Error" ) );
 146   }
 147 }
 148
 149 #include "crlview.moc"