certmanager/lib

messagebox.cpp

00001 /*
00002     messagebox.cpp
00003 
00004     This file is part of libkleopatra, the KDE keymanagement library
00005     Copyright (c) 2004 Klarälvdalens Datakonsult AB
00006 
00007     Libkleopatra is free software; you can redistribute it and/or
00008     modify it under the terms of the GNU General Public License as
00009     published by the Free Software Foundation; either version 2 of the
00010     License, or (at your option) any later version.
00011 
00012     Libkleopatra is distributed in the hope that it will be useful,
00013     but WITHOUT ANY WARRANTY; without even the implied warranty of
00014     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00015     General Public License for more details.
00016 
00017     You should have received a copy of the GNU General Public License
00018     along with this program; if not, write to the Free Software
00019     Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
00020 
00021     In addition, as a special exception, the copyright holders give
00022     permission to link the code of this program with any edition of
00023     the Qt library by Trolltech AS, Norway (or with modified versions
00024     of Qt that use the same license as Qt), and distribute linked
00025     combinations including the two.  You must obey the GNU General
00026     Public License in all respects for all of the code used other than
00027     Qt.  If you modify this file, you may extend this exception to
00028     your version of the file, but you are not obligated to do so.  If
00029     you do not wish to do so, delete this exception statement from
00030     your version.
00031 */
00032 
00033 #ifdef HAVE_CONFIG_H
00034 #include <config.h>
00035 #endif
00036 
00037 #include "messagebox.h"
00038 
00039 #include "kleo/job.h"
00040 
00041 #include <gpgmepp/signingresult.h>
00042 #include <gpgmepp/encryptionresult.h>
00043 
00044 #include <kfiledialog.h>
00045 #include <kdialogbase.h>
00046 #include <klocale.h>
00047 #include <ksavefile.h>
00048 #include <kguiitem.h>
00049 #include <kdebug.h>
00050 
00051 #include <qtextedit.h>
00052 #include <qtextstream.h>
00053 #include <qvbox.h>
00054 #include <qapplication.h>
00055 
00056 #include <gpg-error.h>
00057 
00058 using namespace Kleo;
00059 using namespace GpgME;
00060 
00061 namespace {
00062 
00063 static KGuiItem KGuiItem_save() {
00064     return KGuiItem( i18n("&Save to Disk..."), "filesaveas" );
00065 }
00066 
00067 static KGuiItem KGuiItem_copy() {
00068     return KGuiItem( i18n("&Copy to Clipboard"), "editcopy", i18n("Copy Audit Log to Clipboard") );
00069 }
00070 
00071 static KGuiItem KGuiItem_showAuditLog() {
00072     return KGuiItem( i18n("&Show Audit Log") ); // "view_log"?
00073 }
00074 
00075 class AuditLogViewer : public KDialogBase {
00076     // Q_OBJECT
00077 public:
00078     explicit AuditLogViewer( const QString & log, QWidget * parent=0, const char * name=0, WFlags f=0 )
00079         : KDialogBase( parent, name, false, i18n("View GnuPG Audit Log"),
00080                        Close|User1|User2, Close, false, KGuiItem_save(), KGuiItem_copy() ),
00081           m_textEdit( new QTextEdit( this, "m_textEdit" ) )
00082     {
00083         setWFlags( f );
00084         setMainWidget( m_textEdit );
00085         m_textEdit->setTextFormat( QTextEdit::RichText );
00086         m_textEdit->setReadOnly( true );
00087         setAuditLog( log );
00088     }
00089     ~AuditLogViewer() {}
00090 
00091     void setAuditLog( const QString & log ) {
00092         m_textEdit->setText( log );
00093         const QRect rect = m_textEdit->paragraphRect( 0 );
00094         kdDebug() << "setAuditLog: rect = " << rect;
00095         if ( !rect.isValid() )
00096             return;
00097         QSize maxSize = qApp->desktop()->screenGeometry( this ).size() * 2 / 3 ;
00098         if ( !maxSize.isValid() )
00099             maxSize = QSize( 640, 480 );
00100         m_textEdit->setMinimumSize( rect.size().boundedTo( maxSize ) );
00101     }
00102 
00103 private:
00104     void slotUser1() {
00105         const QString fileName = KFileDialog::getSaveFileName( QString(), QString(),
00106                                                                this, i18n("Choose File to Save GnuPG Audit Log to") );
00107         if ( fileName.isEmpty() )
00108             return;
00109 
00110         KSaveFile file( fileName );
00111 
00112         if ( QTextStream * const s = file.textStream() ) {
00113             *s << m_textEdit->text() << endl;
00114             file.close();
00115         }
00116 
00117         if ( const int err = file.status() )
00118             KMessageBox::error( this, i18n("Couldn't save to file \"%1\": %2")
00119                                 .arg( file.name(), QString::fromLocal8Bit( strerror( err ) ) ),
00120                                 i18n("File Save Error") );
00121     }
00122     void slotUser2() {
00123         m_textEdit->selectAll();
00124         m_textEdit->copy();
00125         m_textEdit->selectAll( false );
00126     }
00127 
00128 private:
00129     QTextEdit * m_textEdit;
00130 };
00131 
00132 } // anon namespace
00133 
00134 // static
00135 void MessageBox::auditLog( QWidget * parent, const Job * job, const QString & caption ) {
00136 
00137     if ( !job )
00138         return;
00139 
00140     if ( !GpgME::hasFeature( AuditLogFeature ) || !job->isAuditLogSupported() ) {
00141         KMessageBox::information( parent, i18n("Your system does not have support for GnuPG Audit Logs"),
00142                                   i18n("System Error") );
00143         return;
00144     }
00145 
00146     const GpgME::Error err = job->auditLogError();
00147 
00148     if ( err.code() != GPG_ERR_NO_DATA ) {
00149         KMessageBox::information( parent, i18n("An error occurred while trying to retrieve the GnuPG Audit Log:\n%1")
00150                                   .arg( QString::fromLocal8Bit( err.asString() ) ),
00151                                   i18n("GnuPG Audit Log Error") );
00152         return;
00153     }
00154 
00155     const QString log = job->auditLogAsHtml();
00156 
00157     if ( log.isEmpty() ) {
00158         KMessageBox::information( parent, i18n("No GnuPG Audit Log available for this operation."),
00159                                   i18n("No GnuPG Audit Log") );
00160         return;
00161     }
00162 
00163     auditLog( parent, log, caption );
00164 }
00165 
00166 // static
00167 void MessageBox::auditLog( QWidget * parent, const QString & log, const QString & caption ) {
00168     AuditLogViewer * const alv = new AuditLogViewer( "<qt>" + log + "</qt>", parent, "alv", Qt::WDestructiveClose );
00169     alv->setCaption( caption );
00170     alv->show();
00171 }
00172 
00173 // static
00174 void MessageBox::auditLog( QWidget * parent, const Job * job ) {
00175     auditLog( parent, job, i18n("GnuPG Audit Log Viewer") );
00176 }
00177 
00178 // static
00179 void MessageBox::auditLog( QWidget * parent, const QString & log ) {
00180     auditLog( parent, log, i18n("GnuPG Audit Log Viewer") );
00181 }
00182 
00183 static QString to_information_string( const SigningResult & result ) {
00184     return result.error()
00185         ? i18n("Signing failed: %1").arg( QString::fromLocal8Bit( result.error().asString() ) )
00186         : i18n("Signing successful") ;
00187 }
00188 
00189 static QString to_error_string( const SigningResult & result ) {
00190     return to_information_string( result );
00191 }
00192 
00193 static QString to_information_string( const EncryptionResult & result ) {
00194     return result.error()
00195         ? i18n("Encryption failed: %1").arg( QString::fromLocal8Bit( result.error().asString() ) )
00196         : i18n("Encryption successful") ;
00197 }
00198 
00199 static QString to_error_string( const EncryptionResult & result ) {
00200     return to_information_string( result );
00201 }
00202 
00203 static QString to_information_string( const SigningResult & sresult, const EncryptionResult & eresult ) {
00204     return to_information_string( sresult ) + '\n' + to_information_string( eresult );
00205 }
00206 
00207 static QString to_error_string( const SigningResult & sresult, const EncryptionResult & eresult ) {
00208     return to_information_string( sresult, eresult );
00209 }
00210 
00211 // static
00212 void MessageBox::information( QWidget * parent, const SigningResult & result, const Job * job, int options ) {
00213     information( parent, result, job, i18n("Signing Result"), options );
00214 }
00215 
00216 // static
00217 void MessageBox::information( QWidget * parent, const SigningResult & result, const Job * job, const QString & caption, int options ) {
00218     make( parent, QMessageBox::Information, to_information_string( result ), job, caption, options );
00219 }
00220 
00221 // static
00222 void MessageBox::error( QWidget * parent, const SigningResult & result, const Job * job, int options ) {
00223     error( parent, result, job, i18n("Signing Error"), options );
00224 }
00225 
00226 // static
00227 void MessageBox::error( QWidget * parent, const SigningResult & result, const Job * job, const QString & caption, int options ) {
00228     make( parent, QMessageBox::Critical, to_error_string( result ), job, caption, options );
00229 }
00230 
00231 // static
00232 void MessageBox::information( QWidget * parent, const EncryptionResult & result, const Job * job, int options ) {
00233     information( parent, result, job, i18n("Encryption Result"), options );
00234 }
00235 
00236 // static
00237 void MessageBox::information( QWidget * parent, const EncryptionResult & result, const Job * job, const QString & caption, int options ) {
00238     make( parent, QMessageBox::Information, to_information_string( result ), job, caption, options );
00239 }
00240 
00241 // static
00242 void MessageBox::error( QWidget * parent, const EncryptionResult & result, const Job * job, int options ) {
00243     error( parent, result, job, i18n("Encryption Error"), options );
00244 }
00245 
00246 // static
00247 void MessageBox::error( QWidget * parent, const EncryptionResult & result, const Job * job, const QString & caption, int options ) {
00248     make( parent, QMessageBox::Critical, to_error_string( result ), job, caption, options );
00249 }
00250 
00251 // static
00252 void MessageBox::information( QWidget * parent, const SigningResult & sresult, const EncryptionResult & eresult, const Job * job, int options ) {
00253     information( parent, sresult, eresult, job, i18n("Encryption Result"), options );
00254 }
00255 
00256 // static
00257 void MessageBox::information( QWidget * parent, const SigningResult & sresult, const EncryptionResult & eresult, const Job * job, const QString & caption, int options ) {
00258     make( parent, QMessageBox::Information, to_information_string( sresult, eresult ), job, caption, options );
00259 }
00260 
00261 // static
00262 void MessageBox::error( QWidget * parent, const SigningResult & sresult, const EncryptionResult & eresult, const Job * job, int options ) {
00263     error( parent, sresult, eresult, job, i18n("Encryption Error"), options );
00264 }
00265 
00266 // static
00267 void MessageBox::error( QWidget * parent, const SigningResult & sresult, const EncryptionResult & eresult, const Job * job, const QString & caption, int options ) {
00268     make( parent, QMessageBox::Critical, to_error_string( sresult, eresult ), job, caption, options );
00269 }
00270 
00271 // static
00272 bool MessageBox::showAuditLogButton( const Kleo::Job * job ) {
00273     if ( !job ) {
00274         kdDebug() << "not showing audit log button (no job instance)" << endl;
00275         return false;
00276     }
00277     if ( !GpgME::hasFeature( GpgME::AuditLogFeature ) ) {
00278         kdDebug() << "not showing audit log button (gpgme too old)" << endl;
00279         return false;
00280     }
00281     if ( !job->isAuditLogSupported() ) {
00282         kdDebug() << "not showing audit log button (not supported)" << endl;
00283         return false;
00284     }
00285     if ( job->auditLogError().code() == GPG_ERR_NO_DATA ) {
00286         kdDebug() << "not showing audit log button (GPG_ERR_NO_DATA)" << endl;
00287         return false;
00288     }
00289     if ( !job->auditLogError() && job->auditLogAsHtml().isEmpty() ) {
00290         kdDebug() << "not showing audit log button (success, but result empty)" << endl;
00291         return false;
00292     }
00293     return true;
00294 }
00295 
00296 
00297 // static
00298 void MessageBox::make( QWidget * parent, QMessageBox::Icon icon, const QString & text, const Job * job, const QString & caption, int options ) {
00299     KDialogBase * dialog = showAuditLogButton( job )
00300         ? new KDialogBase( caption, KDialogBase::Yes | KDialogBase::No,
00301                            KDialogBase::Yes, KDialogBase::Yes,
00302                            parent, "error", true, true,
00303                            KStdGuiItem::ok(), KGuiItem_showAuditLog() )
00304         : new KDialogBase( caption, KDialogBase::Yes,
00305                            KDialogBase::Yes, KDialogBase::Yes,
00306                            parent, "error", true, true,
00307                            KStdGuiItem::ok() ) ;
00308     if ( options & KMessageBox::PlainCaption )
00309         dialog->setPlainCaption( caption );
00310 
00311     if ( KDialogBase::No == KMessageBox::createKMessageBox( dialog, icon, text, QStringList(), QString::null, 0, options ) )
00312         auditLog( 0, job );
00313 }