summaryrefslogtreecommitdiffstats
path: root/certmanager/certificateinfowidgetimpl.cpp
blob: 9ff6b15a568cbc244220aa4f59e73ef342a9d303 (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
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
/*
    certificateinfowidgetimpl.cpp

    This file is part of Kleopatra, the KDE keymanager
    Copyright (c) 2001,2002,2004 Klarälvdalens Datakonsult AB

    Kleopatra is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    Kleopatra is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

    In addition, as a special exception, the copyright holders give
    permission to link the code of this program with any edition of
    the TQt library by Trolltech AS, Norway (or with modified versions
    of TQt that use the same license as TQt), and distribute linked
    combinations including the two.  You must obey the GNU General
    Public License in all respects for all of the code used other than
    TQt.  If you modify this file, you may extend this exception to
    your version of the file, but you are not obligated to do so.  If
    you do not wish to do so, delete this exception statement from
    your version.
*/

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include "certificateinfowidgetimpl.h"

// libkleopatra
#include <kleo/keylistjob.h>
#include <kleo/dn.h>
#include <kleo/cryptobackendfactory.h>

#include <ui/progressdialog.h>

// gpgme++
#include <gpgmepp/keylistresult.h>

// KDE
#include <tdelocale.h>
#include <kdialogbase.h>
#include <tdemessagebox.h>
#include <kdebug.h>
#include <kprocio.h>
#include <tdeglobalsettings.h>

// TQt
#include <tqlistview.h>
#include <tqtextedit.h>
#include <tqheader.h>
#include <tqpushbutton.h>
#include <tqcursor.h>
#include <tqapplication.h>
#include <tqdatetime.h>
#include <tqstylesheet.h>
#include <tqtextcodec.h>

// other
#include <assert.h>

CertificateInfoWidgetImpl::CertificateInfoWidgetImpl( const GpgME::Key & key, bool external,
						      TQWidget * parent, const char * name )
  : CertificateInfoWidget( parent, name ),
    mExternal( external ),
    mFoundIssuer( true ),
    mHaveKeyLocally( false )
{
  importButton->setEnabled( false );

  listView->setColumnWidthMode( 1, TQListView::Maximum );
  TQFontMetrics fm = fontMetrics();
  listView->setColumnWidth( 1, fm.width( i18n("Information") ) * 5 );

  listView->header()->setClickEnabled( false );
  listView->setSorting( -1 );

  connect( listView, TQ_SIGNAL( selectionChanged( TQListViewItem* ) ),
	   this, TQ_SLOT( slotShowInfo( TQListViewItem* ) ) );
  pathView->setColumnWidthMode( 0, TQListView::Maximum );
  pathView->header()->hide();

  connect( pathView, TQ_SIGNAL( doubleClicked( TQListViewItem* ) ),
	   this, TQ_SLOT( slotShowCertPathDetails( TQListViewItem* ) ) );
  connect( pathView, TQ_SIGNAL( returnPressed( TQListViewItem* ) ),
	   this, TQ_SLOT( slotShowCertPathDetails( TQListViewItem* ) ) );
  connect( importButton, TQ_SIGNAL( clicked() ),
	   this, TQ_SLOT( slotImportCertificate() ) );

  dumpView->setFont( TDEGlobalSettings::fixedFont() );

  if ( !key.isNull() )
    setKey( key );
}

static TQString time_t2string( time_t t ) {
  TQDateTime dt;
  dt.setTime_t( t );
  return dt.toString();
}

void CertificateInfoWidgetImpl::setKey( const GpgME::Key & key  ) {
  mChain.clear();
  mFoundIssuer = true;
  mHaveKeyLocally = false;

  listView->clear();
  pathView->clear();
  importButton->setEnabled( false );

  if ( key.isNull() )
    return;

  mChain.push_front( key );
  startKeyExistanceCheck(); // starts a local keylisting to enable the
			    // importButton if needed

  TQListViewItem * item = 0;
  item = new TQListViewItem( listView, item, i18n("Valid"), TQString("From %1 to %2")
			    .arg( time_t2string( key.subkey(0).creationTime() ),
				  time_t2string( key.subkey(0).expirationTime() ) ) );
  item = new TQListViewItem( listView, item, i18n("Can be used for signing"),
			    key.canSign() ? i18n("Yes") : i18n("No") );
  item = new TQListViewItem( listView, item, i18n("Can be used for encryption"),
			    key.canEncrypt() ? i18n("Yes") : i18n("No") );
  item = new TQListViewItem( listView, item, i18n("Can be used for certification"),
			    key.canCertify() ? i18n("Yes") : i18n("No") );
  item = new TQListViewItem( listView, item, i18n("Can be used for authentication"),
			    key.canAuthenticate() ? i18n("Yes") : i18n("No" ) );
  item = new TQListViewItem( listView, item, i18n("Fingerprint"), key.primaryFingerprint() );
  item = new TQListViewItem( listView, item, i18n("Issuer"), Kleo::DN( key.issuerName() ).prettyDN() );
  item = new TQListViewItem( listView, item, i18n("Serial Number"), key.issuerSerial() );

  const Kleo::DN dn = key.userID(0).id();

  // FIXME: use the attributeLabelMap from certificatewizardimpl.cpp:
  static TQMap<TQString,TQString> dnComponentNames;
  if ( dnComponentNames.isEmpty() ) {
	dnComponentNames["C"] = i18n("Country");
	dnComponentNames["OU"] = i18n("Organizational Unit");
	dnComponentNames["O"] = i18n("Organization");
	dnComponentNames["L"] = i18n("Location");
	dnComponentNames["CN"] = i18n("Common Name");
	dnComponentNames["EMAIL"] = i18n("Email");
  }

  for ( Kleo::DN::const_iterator dnit = dn.begin() ; dnit != dn.end() ; ++dnit ) {
	TQString displayName = (*dnit).name();
	if( dnComponentNames.contains(displayName) ) displayName = dnComponentNames[displayName];
	item = new TQListViewItem( listView, item, displayName, (*dnit).value() );
  }

  const std::vector<GpgME::UserID> uids = key.userIDs();
  if ( !uids.empty() ) {
    item = new TQListViewItem( listView, item, i18n("Subject"),
			      Kleo::DN( uids.front().id() ).prettyDN() );
    for ( std::vector<GpgME::UserID>::const_iterator it = uids.begin() + 1 ; it != uids.end() ; ++it ) {
      if ( !(*it).id() )
	continue;
      const TQString email = TQString::fromUtf8( (*it).id() ).stripWhiteSpace();
      if ( email.isEmpty() )
	continue;
      if ( email.startsWith( "<" ) )
	item = new TQListViewItem( listView, item, i18n("Email"),
				  email.mid( 1, email.length()-2 ) );
      else
	item = new TQListViewItem( listView, item, i18n("A.k.a."), email );
    }
  }

  updateChainView();
  startCertificateChainListing();
  startCertificateDump();
}

static void showChainListError( TQWidget * parent, const GpgME::Error & err, const char * subject ) {
  assert( err );
  const TQString msg = i18n("<qt><p>An error occurred while fetching "
			   "the certificate <b>%1</b> from the backend:</p>"
			   "<p><b>%2</b></p></qt>")
    .arg( subject ? TQString::fromUtf8( subject ) : TQString(),
	  TQString::fromLocal8Bit( err.asString() ) );
  KMessageBox::error( parent, msg, i18n("Certificate Listing Failed" ) );
}

void CertificateInfoWidgetImpl::startCertificateChainListing() {
  kdDebug() << "CertificateInfoWidgetImpl::startCertificateChainListing()" << endl;

  if ( mChain.empty() ) {
    // we need a seed...
    kdWarning() << "CertificateInfoWidgetImpl::startCertificateChainListing(): mChain is empty!" << endl;
    return;
  }
  const char * chainID = mChain.front().chainID();
  if ( !chainID || !*chainID ) {
    // cert not found:
    kdDebug() << "CertificateInfoWidgetImpl::startCertificateChainListing(): empty chain ID - root not found" << endl;
    return;
  }
  const char * fpr = mChain.front().primaryFingerprint();
  if ( tqstricmp( fpr, chainID ) == 0 ) {
    kdDebug() << "CertificateInfoWidgetImpl::startCertificateChainListing(): chain_id equals fingerprint -> found root" << endl;
    return;
  }
  if ( mChain.size() > 100 ) {
    // safe guard against certificate loops (paranoia factor 8 out of 10)...
    kdWarning() << "CertificateInfoWidgetImpl::startCertificateChainListing(): maximum chain length of 100 exceeded!" << endl;
    return;
  }
  if ( !mFoundIssuer ) {
    // key listing failed. Don't end up in endless loop
    kdDebug() << "CertificateInfoWidgetImpl::startCertificateChainListing(): issuer not found - giving up" << endl;
    return;
  }

  mFoundIssuer = false;

  // gpgsm / dirmngr / LDAP / whoever doesn't support looking up
  // external keys by fingerprint. Furthermore, since we actually got
  // a chain-id set on the key, we know that we have the issuer's cert
  // in the local keyring, so just use local keylisting.
  Kleo::KeyListJob * job =
    Kleo::CryptoBackendFactory::instance()->smime()->keyListJob( false );
  assert( job );

  connect( job, TQ_SIGNAL(result(const GpgME::KeyListResult&)),
	   TQ_SLOT(slotCertificateChainListingResult(const GpgME::KeyListResult&)) );
  connect( job, TQ_SIGNAL(nextKey(const GpgME::Key&)),
	   TQ_SLOT(slotNextKey(const GpgME::Key&)) );

  kdDebug() << "Going to fetch" << endl
	    << "  issuer  : \"" << mChain.front().issuerName() << "\"" << endl
	    << "  chain id: " << mChain.front().chainID() << endl
	    << "for" << endl
	    << "  subject : \"" << mChain.front().userID(0).id() << "\"" << endl
	    << "  subj.fpr: " << mChain.front().primaryFingerprint() << endl;

  const GpgME::Error err = job->start( mChain.front().chainID() );

  if ( err )
    showChainListError( this, err, mChain.front().issuerName() );
  else
    (void)new Kleo::ProgressDialog( job, i18n("Fetching Certificate Chain"), this );
}

void CertificateInfoWidgetImpl::startCertificateDump() {
  TDEProcess* proc = new TDEProcess( this );
  (*proc) << "gpgsm"; // must be in the PATH
  (*proc) << "--dump-keys";
  (*proc) << mChain.front().primaryFingerprint();

  TQObject::connect( proc, TQ_SIGNAL( receivedStdout(TDEProcess *, char *, int) ),
                    this, TQ_SLOT( slotCollectStdout(TDEProcess *, char *, int) ) );
  TQObject::connect( proc, TQ_SIGNAL( receivedStderr(TDEProcess *, char *, int) ),
                    this, TQ_SLOT( slotCollectStderr(TDEProcess *, char *, int) ) );
  TQObject::connect( proc, TQ_SIGNAL( processExited(TDEProcess*) ),
                    this, TQ_SLOT( slotDumpProcessExited(TDEProcess*) ) );

  if ( !proc->start( TDEProcess::NotifyOnExit, (TDEProcess::Communication)(TDEProcess::Stdout | TDEProcess::Stderr) ) ) {
    TQString wmsg = i18n("Failed to execute gpgsm:\n%1").arg( i18n( "program not found" ) );
    dumpView->setText( TQStyleSheet::escape( wmsg ) );
    delete proc;
  }
}

void CertificateInfoWidgetImpl::slotCollectStdout(TDEProcess *, char *buffer, int buflen)
{
  mDumpOutput += TQCString(buffer, buflen+1); // like KProcIO does
}

void CertificateInfoWidgetImpl::slotCollectStderr(TDEProcess *, char *buffer, int buflen)
{
  mDumpError += TQCString(buffer, buflen+1); // like KProcIO does
}

void CertificateInfoWidgetImpl::slotDumpProcessExited(TDEProcess* proc) {
  int rc = ( proc->normalExit() ) ? proc->exitStatus() : -1 ;

  if ( rc == 0 ) {
    dumpView->setText( TQStyleSheet::escape( TQString::fromUtf8( mDumpOutput ) ) );
  } else {
    if ( !mDumpError.isEmpty() ) {
      dumpView->setText( TQStyleSheet::escape( TQString::fromUtf8( mDumpError ) ) );
    } else
    {
      TQString wmsg = i18n("Failed to execute gpgsm:\n%1");
      if ( rc == -1 )
        wmsg = wmsg.arg( i18n( "program cannot be executed" ) );
      else
        wmsg = wmsg.arg( strerror(rc) );
      dumpView->setText( TQStyleSheet::escape( wmsg ) );
    }
  }

  proc->deleteLater();
}

void CertificateInfoWidgetImpl::slotNextKey( const GpgME::Key & key ) {
  kdDebug() << "CertificateInfoWidgetImpl::slotNextKey( \""
	    << key.userID(0).id() << "\" )" << endl;
  if ( key.isNull() )
    return;

  mFoundIssuer = true;
  mChain.push_front( key );
  updateChainView();
  // FIXME: cancel the keylisting. We're only interested in _one_ key.
}

void CertificateInfoWidgetImpl::updateChainView() {
  pathView->clear();
  if ( mChain.empty() )
    return;
  TQListViewItem * item = 0;

  TQValueList<GpgME::Key>::const_iterator it = mChain.begin();
  // root item:
  if ( (*it).chainID() && qstrcmp( (*it).chainID(), (*it).primaryFingerprint() ) == 0 )
    item = new TQListViewItem( pathView, Kleo::DN( (*it++).userID(0).id() ).prettyDN() );
  else {
    item = new TQListViewItem( pathView, i18n("Issuer certificate not found ( %1)")
			      .arg( Kleo::DN( (*it).issuerName() ).prettyDN() ) );
    item->setOpen( true ); // TQt bug: doesn't open after setEnabled( false ) :/
    item->setEnabled( false );
  }
  item->setOpen( true );

  // subsequent items:
  while ( it != mChain.end() ) {
    item = new TQListViewItem( item, Kleo::DN( (*it++).userID(0).id() ).prettyDN() );
    item->setOpen( true );
  }
}

void CertificateInfoWidgetImpl::slotCertificateChainListingResult( const GpgME::KeyListResult & res ) {
  if ( res.error() )
    return showChainListError( this, res.error(), mChain.front().issuerName() );
  else
    startCertificateChainListing();
}

void CertificateInfoWidgetImpl::slotShowInfo( TQListViewItem * item ) {
  textView->setText( item->text(1) );
}

void CertificateInfoWidgetImpl::slotShowCertPathDetails( TQListViewItem * item ) {
  if ( !item )
    return;

  // find the key corresponding to "item". This hack would not be
  // necessary if pathView was a Kleo::KeyListView, but it's
  // TQt-Designer-generated and I don't feel like creating a custom
  // widget spec for Kleo::KeyListView.
  unsigned int totalCount = 0;
  int itemIndex = -1;
  for ( const TQListViewItem * i = pathView->firstChild() ; i ; i = i->firstChild() ) {
    if ( i == item )
      itemIndex = totalCount;
    ++totalCount;
  }

  assert( totalCount == mChain.size() || totalCount == mChain.size() + 1 );

  // skip pseudo root item with "not found message":
  if ( totalCount == mChain.size() + 1 )
    --itemIndex;

  assert( itemIndex >= 0 );

  KDialogBase * dialog =
    new KDialogBase( this, "dialog", false, i18n("Additional Information for Key"),
		     KDialogBase::Close, KDialogBase::Close );
  CertificateInfoWidgetImpl * top =
    new CertificateInfoWidgetImpl( mChain[itemIndex], mExternal, dialog );
  dialog->setMainWidget( top );
  // proxy the signal to our receiver:
  connect( top, TQ_SIGNAL(requestCertificateDownload(const TQString&, const TQString&)),
	   TQ_SIGNAL(requestCertificateDownload(const TQString&, const TQString&)) );
  dialog->show();
}


void CertificateInfoWidgetImpl::slotImportCertificate()
{
  if ( mChain.empty() || mChain.back().isNull() )
    return;
  const Kleo::DN dn = mChain.back().userID( 0 ).id();
  emit requestCertificateDownload( mChain.back().primaryFingerprint(), dn.prettyDN() );
  importButton->setEnabled( false );
}

void CertificateInfoWidgetImpl::startKeyExistanceCheck() {
  if ( !mExternal )
    // we already have it if it's from a local keylisting :)
    return;
  if ( mChain.empty() || mChain.back().isNull() )
    // need a key to look for
    return;
  const TQString fingerprint = mChain.back().primaryFingerprint();
  if ( fingerprint.isEmpty() )
    // empty pattern means list all keys. We don't want that
    return;

  // start _local_ keylistjob (no progressdialog needed here):
  Kleo::KeyListJob * job =
    Kleo::CryptoBackendFactory::instance()->smime()->keyListJob( false );
  assert( job );

  connect( job, TQ_SIGNAL(nextKey(const GpgME::Key&)),
	   TQ_SLOT(slotKeyExistanceCheckNextCandidate(const GpgME::Key&)) );
  connect( job, TQ_SIGNAL(result(const GpgME::KeyListResult&)),
	   TQ_SLOT(slotKeyExistanceCheckFinished()) );
  // nor to check for errors:
  job->start( fingerprint );
}

void CertificateInfoWidgetImpl::slotKeyExistanceCheckNextCandidate( const GpgME::Key & key ) {
  if ( key.isNull() || mChain.empty() || !key.primaryFingerprint() )
    return;

  if ( qstrcmp( key.primaryFingerprint(),
		mChain.back().primaryFingerprint() ) == 0 )
    mHaveKeyLocally = true;
}

void CertificateInfoWidgetImpl::slotKeyExistanceCheckFinished() {
  importButton->setEnabled( !mHaveKeyLocally );
}


#include "certificateinfowidgetimpl.moc"