summaryrefslogtreecommitdiffstats
path: root/drkonqi/debugger.cpp
blob: 11e9339ddfba2395a46855882100dd7b37f59576 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
/*****************************************************************
 * 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 <layout.h>
#include <tqhbox.h>
#include <tqlabel.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, TQWidget *parent, const char *name)
  : TQWidget( parent, name ),
    m_krashconf(krashconf),
    m_proctrace(0)
{
  TQVBoxLayout *vbox = new TQVBoxLayout( this, 0, KDialog::marginHint() );
  vbox->setAutoAdd(TRUE);

  m_backtrace = new KTextBrowser(this);
  m_backtrace->setTextFormat(TQt::PlainText);
  m_backtrace->setFont(KGlobalSettings::fixedFont());

  TQWidget *w = new TQWidget( this );
  ( new TQHBoxLayout( w, 0, KDialog::marginHint() ) )->setAutoAdd( true );
  m_status = new TQLabel( w );
  m_status->setSizePolicy( TQSizePolicy( TQSizePolicy::Expanding, TQSizePolicy::Preferred ) );
  //m_copyButton = new KPushButton( KStdGuiItem::copy(), w );
  KGuiItem item( i18n( "C&opy" ), TQString::fromLatin1( "editcopy" ) );
  m_copyButton = new KPushButton( item, w );
  connect( m_copyButton, TQT_SIGNAL( clicked() ), this, TQT_SLOT( slotCopy() ) );
  m_copyButton->setEnabled( false );
  m_saveButton = new KPushButton( m_krashconf->safeMode() ? KStdGuiItem::save() : KStdGuiItem::saveAs(), w );
  connect( m_saveButton, TQT_SIGNAL( clicked() ), this, TQT_SLOT( slotSave() ) );
  m_saveButton->setEnabled( false );
}

KrashDebugger :: ~KrashDebugger()
{
  // This will SIGKILL gdb and SIGCONT program which crashed.
  //  delete m_proctrace;
}

void KrashDebugger :: slotDone(const TQString& 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(TQString::fromAscii("/tmp/"), TQString::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
  {
    TQString defname = m_krashconf->execName() + TQString::fromLatin1( ".kcrash" );
    if( defname.contains( '/' ))
        defname = defname.mid( defname.findRev( '/' ) + 1 );
    TQString filename = KFileDialog::getSaveFileName(defname, TQString::null, this, i18n("Select Filename"));
    if (!filename.isEmpty())
    {
      TQFile 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))
      {
        TQTextStream 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 TQString &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(TQShowEvent *e)
{
  TQWidget::showEvent(e);
  startDebugger();
}

void KrashDebugger :: startDebugger()
{
  // Only start one copy
  if (m_proctrace || !m_backtrace->text().isEmpty())
    return;

  TQString 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, TQT_TQOBJECT(this));

  connect(m_proctrace, TQT_SIGNAL(append(const TQString &)),
          TQT_SLOT(slotAppend(const TQString &)));
  connect(m_proctrace, TQT_SIGNAL(done(const TQString&)), TQT_SLOT(slotDone(const TQString&)));
  connect(m_proctrace, TQT_SIGNAL(someError()), TQT_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( TQString* msg )
{
  bool ret = true;
  KConfig kdedcfg( TQString::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;
}