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mailtransport

  • mailtransport
transportmanager.cpp
1 /*
2  Copyright (c) 2006 - 2007 Volker Krause <vkrause@kde.org>
3 
4  This library is free software; you can redistribute it and/or modify it
5  under the terms of the GNU Library General Public License as published by
6  the Free Software Foundation; either version 2 of the License, or (at your
7  option) any later version.
8 
9  This library is distributed in the hope that it will be useful, but WITHOUT
10  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
12  License for more details.
13 
14  You should have received a copy of the GNU Library General Public License
15  along with this library; see the file COPYING.LIB. If not, write to the
16  Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
17  02110-1301, USA.
18 */
19 
20 #include "transportmanager.h"
21 #include "resourcesendjob_p.h"
22 #include "mailtransport_defs.h"
23 #include "sendmailjob.h"
24 #include "smtpjob.h"
25 #include "transport.h"
26 #include "transport_p.h"
27 #include "transportjob.h"
28 #include "transporttype.h"
29 #include "transporttype_p.h"
30 #include "addtransportdialog.h"
31 #include "transportconfigdialog.h"
32 #include "transportconfigwidget.h"
33 #include "sendmailconfigwidget.h"
34 #include "smtpconfigwidget.h"
35 
36 #include <QApplication>
37 #include <QtDBus/QDBusConnection>
38 #include <QtDBus/QDBusConnectionInterface>
39 #include <QtDBus/QDBusServiceWatcher>
40 #include <QPointer>
41 #include <QRegExp>
42 #include <QStringList>
43 
44 #include <KConfig>
45 #include <KConfigGroup>
46 #include <KDebug>
47 #include <KEMailSettings>
48 #include <KLocale>
49 #include <KMessageBox>
50 #include <KRandom>
51 #include <KUrl>
52 #include <KWallet/Wallet>
53 
54 #include <akonadi/agentinstance.h>
55 #include <akonadi/agentmanager.h>
56 
57 using namespace MailTransport;
58 using namespace KWallet;
59 
60 namespace MailTransport {
65 class TransportManagerPrivate
66 {
67  public:
68  TransportManagerPrivate( TransportManager *parent )
69  : q( parent )
70  {
71  }
72 
73  ~TransportManagerPrivate() {
74  delete config;
75  qDeleteAll( transports );
76  }
77 
78  KConfig *config;
79  QList<Transport *> transports;
80  TransportType::List types;
81  bool myOwnChange;
82  bool appliedChange;
83  KWallet::Wallet *wallet;
84  bool walletOpenFailed;
85  bool walletAsyncOpen;
86  int defaultTransportId;
87  bool isMainInstance;
88  QList<TransportJob *> walletQueue;
89  TransportManager *q;
90 
91  void readConfig();
92  void writeConfig();
93  void fillTypes();
94  int createId() const;
95  void prepareWallet();
96  void validateDefault();
97  void migrateToWallet();
98 
99  // Slots
100  void slotTransportsChanged();
101  void slotWalletOpened( bool success );
102  void dbusServiceUnregistered();
103  void agentTypeAdded( const Akonadi::AgentType &atype );
104  void agentTypeRemoved( const Akonadi::AgentType &atype );
105  void jobResult( KJob *job );
106 };
107 
108 }
109 
110 class StaticTransportManager : public TransportManager
111 {
112  public:
113  StaticTransportManager() : TransportManager() {}
114 };
115 
116 StaticTransportManager *sSelf = 0;
117 
118 static void destroyStaticTransportManager() {
119  delete sSelf;
120 }
121 
122 TransportManager::TransportManager()
123  : QObject(), d( new TransportManagerPrivate( this ) )
124 {
125  KGlobal::locale()->insertCatalog( QLatin1String( "libmailtransport" ) );
126  KGlobal::locale()->insertCatalog( QLatin1String( "libakonadi-kmime" ) );
127  qAddPostRoutine( destroyStaticTransportManager );
128  d->myOwnChange = false;
129  d->appliedChange = false;
130  d->wallet = 0;
131  d->walletOpenFailed = false;
132  d->walletAsyncOpen = false;
133  d->defaultTransportId = -1;
134  d->config = new KConfig( QLatin1String( "mailtransports" ) );
135 
136  QDBusConnection::sessionBus().registerObject( DBUS_OBJECT_PATH, this,
137  QDBusConnection::ExportScriptableSlots |
138  QDBusConnection::ExportScriptableSignals );
139 
140  QDBusServiceWatcher *watcher =
141  new QDBusServiceWatcher( DBUS_SERVICE_NAME, QDBusConnection::sessionBus(),
142  QDBusServiceWatcher::WatchForUnregistration, this );
143  connect( watcher, SIGNAL(serviceUnregistered(QString)),
144  SLOT(dbusServiceUnregistered()) );
145 
146  QDBusConnection::sessionBus().connect( QString(), QString(),
147  DBUS_INTERFACE_NAME, DBUS_CHANGE_SIGNAL,
148  this, SLOT(slotTransportsChanged()) );
149 
150  d->isMainInstance = QDBusConnection::sessionBus().registerService( DBUS_SERVICE_NAME );
151 
152  d->fillTypes();
153 }
154 
155 TransportManager::~TransportManager()
156 {
157  qRemovePostRoutine( destroyStaticTransportManager );
158  delete d;
159 }
160 
161 TransportManager *TransportManager::self()
162 {
163  if ( !sSelf ) {
164  sSelf = new StaticTransportManager;
165  sSelf->d->readConfig();
166  }
167  return sSelf;
168 }
169 
170 Transport *TransportManager::transportById( int id, bool def ) const
171 {
172  foreach ( Transport *t, d->transports ) {
173  if ( t->id() == id ) {
174  return t;
175  }
176  }
177 
178  if ( def || ( id == 0 && d->defaultTransportId != id ) ) {
179  return transportById( d->defaultTransportId, false );
180  }
181  return 0;
182 }
183 
184 Transport *TransportManager::transportByName( const QString &name, bool def ) const
185 {
186  foreach ( Transport *t, d->transports ) {
187  if ( t->name() == name ) {
188  return t;
189  }
190  }
191  if ( def ) {
192  return transportById( 0, false );
193  }
194  return 0;
195 }
196 
197 QList< Transport * > TransportManager::transports() const
198 {
199  return d->transports;
200 }
201 
202 TransportType::List TransportManager::types() const
203 {
204  return d->types;
205 }
206 
207 Transport *TransportManager::createTransport() const
208 {
209  int id = d->createId();
210  Transport *t = new Transport( QString::number( id ) );
211  t->setId( id );
212  return t;
213 }
214 
215 void TransportManager::addTransport( Transport *transport )
216 {
217  if ( d->transports.contains( transport ) ) {
218  kDebug() << "Already have this transport.";
219  return;
220  }
221 
222  kDebug() << "Added transport" << transport;
223  d->transports.append( transport );
224  d->validateDefault();
225  emitChangesCommitted();
226 }
227 
228 void TransportManager::schedule( TransportJob *job )
229 {
230  connect( job, SIGNAL(result(KJob*)), SLOT(jobResult(KJob*)) );
231 
232  // check if the job is waiting for the wallet
233  if ( !job->transport()->isComplete() ) {
234  kDebug() << "job waits for wallet:" << job;
235  d->walletQueue << job;
236  loadPasswordsAsync();
237  return;
238  }
239 
240  job->start();
241 }
242 
243 void TransportManager::createDefaultTransport()
244 {
245  KEMailSettings kes;
246  Transport *t = createTransport();
247  t->setName( i18n( "Default Transport" ) );
248  t->setHost( kes.getSetting( KEMailSettings::OutServer ) );
249  if ( t->isValid() ) {
250  t->writeConfig();
251  addTransport( t );
252  } else {
253  kWarning() << "KEMailSettings does not contain a valid transport.";
254  }
255 }
256 
257 bool TransportManager::showTransportCreationDialog( QWidget *parent,
258  ShowCondition showCondition )
259 {
260  if ( showCondition == IfNoTransportExists ) {
261  if ( !isEmpty() ) {
262  return true;
263  }
264 
265  const int response = KMessageBox::messageBox( parent,
266  KMessageBox::WarningContinueCancel,
267  i18n( "You must create an outgoing account before sending." ),
268  i18n( "Create Account Now?" ),
269  KGuiItem( i18n( "Create Account Now" ) ) );
270  if ( response != KMessageBox::Continue ) {
271  return false;
272  }
273  }
274 
275  QPointer<AddTransportDialog> dialog = new AddTransportDialog( parent );
276  const bool accepted = ( dialog->exec() == QDialog::Accepted );
277  delete dialog;
278  return accepted;
279 }
280 
281 bool TransportManager::configureTransport( Transport *transport, QWidget *parent )
282 {
283  if ( transport->type() == Transport::EnumType::Akonadi ) {
284  using namespace Akonadi;
285  AgentInstance instance = AgentManager::self()->instance( transport->host() );
286  if ( !instance.isValid() ) {
287  kWarning() << "Invalid resource instance" << transport->host();
288  }
289  instance.configure( parent ); // Async...
290  transport->writeConfig();
291  return true; // No way to know here if the user cancelled or not.
292  }
293 
294  QPointer<TransportConfigDialog> transportConfigDialog = new TransportConfigDialog(transport, parent);
295  transportConfigDialog->setCaption( i18n( "Configure account" ) );
296  bool okClicked = ( transportConfigDialog->exec() == QDialog::Accepted );
297  delete transportConfigDialog;
298  return okClicked;
299 }
300 
301 TransportJob *TransportManager::createTransportJob( int transportId )
302 {
303  Transport *t = transportById( transportId, false );
304  if ( !t ) {
305  return 0;
306  }
307  t = t->clone(); // Jobs delete their transports.
308  t->updatePasswordState();
309  switch ( t->type() ) {
310  case Transport::EnumType::SMTP:
311  return new SmtpJob( t, this );
312  case Transport::EnumType::Sendmail:
313  return new SendmailJob( t, this );
314  case Transport::EnumType::Akonadi:
315  return new ResourceSendJob( t, this );
316  }
317  Q_ASSERT( false );
318  return 0;
319 }
320 
321 TransportJob *TransportManager::createTransportJob( const QString &transport )
322 {
323  bool ok = false;
324  Transport *t = 0;
325 
326  int transportId = transport.toInt( &ok );
327  if ( ok ) {
328  t = transportById( transportId );
329  }
330 
331  if ( !t ) {
332  t = transportByName( transport, false );
333  }
334 
335  if ( t ) {
336  return createTransportJob( t->id() );
337  }
338 
339  return 0;
340 }
341 
342 bool TransportManager::isEmpty() const
343 {
344  return d->transports.isEmpty();
345 }
346 
347 QList<int> TransportManager::transportIds() const
348 {
349  QList<int> rv;
350  foreach ( Transport *t, d->transports ) {
351  rv << t->id();
352  }
353  return rv;
354 }
355 
356 QStringList TransportManager::transportNames() const
357 {
358  QStringList rv;
359  foreach ( Transport *t, d->transports ) {
360  rv << t->name();
361  }
362  return rv;
363 }
364 
365 QString TransportManager::defaultTransportName() const
366 {
367  Transport *t = transportById( d->defaultTransportId, false );
368  if ( t ) {
369  return t->name();
370  }
371  return QString();
372 }
373 
374 int TransportManager::defaultTransportId() const
375 {
376  return d->defaultTransportId;
377 }
378 
379 void TransportManager::setDefaultTransport( int id )
380 {
381  if ( id == d->defaultTransportId || !transportById( id, false ) ) {
382  return;
383  }
384  d->defaultTransportId = id;
385  d->writeConfig();
386 }
387 
388 void TransportManager::removeTransport( int id )
389 {
390  Transport *t = transportById( id, false );
391  if ( !t ) {
392  return;
393  }
394  emit transportRemoved( t->id(), t->name() );
395 
396  // Kill the resource, if Akonadi-type transport.
397  if ( t->type() == Transport::EnumType::Akonadi ) {
398  using namespace Akonadi;
399  const AgentInstance instance = AgentManager::self()->instance( t->host() );
400  if ( !instance.isValid() ) {
401  kWarning() << "Could not find resource instance.";
402  }
403  AgentManager::self()->removeInstance( instance );
404  }
405 
406  d->transports.removeAll( t );
407  d->validateDefault();
408  QString group = t->currentGroup();
409  delete t;
410  d->config->deleteGroup( group );
411  d->writeConfig();
412 
413 }
414 
415 void TransportManagerPrivate::readConfig()
416 {
417  QList<Transport *> oldTransports = transports;
418  transports.clear();
419 
420  QRegExp re( QLatin1String( "^Transport (.+)$" ) );
421  QStringList groups = config->groupList().filter( re );
422  foreach ( const QString &s, groups ) {
423  re.indexIn( s );
424  Transport *t = 0;
425 
426  // see if we happen to have that one already
427  foreach ( Transport *old, oldTransports ) {
428  if ( old->currentGroup() == QLatin1String( "Transport " ) + re.cap( 1 ) ) {
429  kDebug() << "reloading existing transport:" << s;
430  t = old;
431  t->d->passwordNeedsUpdateFromWallet = true;
432  t->readConfig();
433  oldTransports.removeAll( old );
434  break;
435  }
436  }
437 
438  if ( !t ) {
439  t = new Transport( re.cap( 1 ) );
440  }
441  if ( t->id() <= 0 ) {
442  t->setId( createId() );
443  t->writeConfig();
444  }
445  transports.append( t );
446  }
447 
448  qDeleteAll( oldTransports );
449  oldTransports.clear();
450 
451  // read default transport
452  KConfigGroup group( config, "General" );
453  defaultTransportId = group.readEntry( "default-transport", 0 );
454  if ( defaultTransportId == 0 ) {
455  // migrated default transport contains the name instead
456  QString name = group.readEntry( "default-transport", QString() );
457  if ( !name.isEmpty() ) {
458  Transport *t = q->transportByName( name, false );
459  if ( t ) {
460  defaultTransportId = t->id();
461  writeConfig();
462  }
463  }
464  }
465  validateDefault();
466  migrateToWallet();
467  q->loadPasswordsAsync();
468 }
469 
470 void TransportManagerPrivate::writeConfig()
471 {
472  KConfigGroup group( config, "General" );
473  group.writeEntry( "default-transport", defaultTransportId );
474  config->sync();
475  q->emitChangesCommitted();
476 }
477 
478 void TransportManagerPrivate::fillTypes()
479 {
480  Q_ASSERT( types.isEmpty() );
481 
482  // SMTP.
483  {
484  TransportType type;
485  type.d->mType = Transport::EnumType::SMTP;
486  type.d->mName = i18nc( "@option SMTP transport", "SMTP" );
487  type.d->mDescription = i18n( "An SMTP server on the Internet" );
488  types << type;
489  }
490 
491  // Sendmail.
492  {
493  TransportType type;
494  type.d->mType = Transport::EnumType::Sendmail;
495  type.d->mName = i18nc( "@option sendmail transport", "Sendmail" );
496  type.d->mDescription = i18n( "A local sendmail installation" );
497  types << type;
498  }
499 
500  // All Akonadi resources with MailTransport capability.
501  {
502  using namespace Akonadi;
503  foreach ( const AgentType &atype, AgentManager::self()->types() ) {
504  // TODO probably the string "MailTransport" should be #defined somewhere
505  // and used like that in the resources (?)
506  if ( atype.capabilities().contains( QLatin1String( "MailTransport" ) ) ) {
507  TransportType type;
508  type.d->mType = Transport::EnumType::Akonadi;
509  type.d->mAgentType = atype;
510  type.d->mName = atype.name();
511  type.d->mDescription = atype.description();
512  types << type;
513  kDebug() << "Found Akonadi type" << atype.name();
514  }
515  }
516 
517  // Watch for appearing and disappearing types.
518  QObject::connect( AgentManager::self(), SIGNAL(typeAdded(Akonadi::AgentType)),
519  q, SLOT(agentTypeAdded(Akonadi::AgentType)) );
520  QObject::connect( AgentManager::self(), SIGNAL(typeRemoved(Akonadi::AgentType)),
521  q, SLOT(agentTypeRemoved(Akonadi::AgentType)) );
522  }
523 
524  kDebug() << "Have SMTP, Sendmail, and" << types.count() - 2 << "Akonadi types.";
525 }
526 
527 void TransportManager::emitChangesCommitted()
528 {
529  d->myOwnChange = true; // prevent us from reading our changes again
530  d->appliedChange = false; // but we have to read them at least once
531  emit transportsChanged();
532  emit changesCommitted();
533 }
534 
535 void TransportManagerPrivate::slotTransportsChanged()
536 {
537  if ( myOwnChange && appliedChange ) {
538  myOwnChange = false;
539  appliedChange = false;
540  return;
541  }
542 
543  kDebug();
544  config->reparseConfiguration();
545  // FIXME: this deletes existing transport objects!
546  readConfig();
547  appliedChange = true; // to prevent recursion
548  emit q->transportsChanged();
549 }
550 
551 int TransportManagerPrivate::createId() const
552 {
553  QList<int> usedIds;
554  foreach ( Transport *t, transports ) {
555  usedIds << t->id();
556  }
557  usedIds << 0; // 0 is default for unknown
558  int newId;
559  do {
560  newId = KRandom::random();
561  } while ( usedIds.contains( newId ) );
562  return newId;
563 }
564 
565 KWallet::Wallet * TransportManager::wallet()
566 {
567  if ( d->wallet && d->wallet->isOpen() ) {
568  return d->wallet;
569  }
570 
571  if ( !Wallet::isEnabled() || d->walletOpenFailed ) {
572  return 0;
573  }
574 
575  WId window = 0;
576  if ( qApp->activeWindow() ) {
577  window = qApp->activeWindow()->winId();
578  } else if ( !QApplication::topLevelWidgets().isEmpty() ) {
579  window = qApp->topLevelWidgets().first()->winId();
580  }
581 
582  delete d->wallet;
583  d->wallet = Wallet::openWallet( Wallet::NetworkWallet(), window );
584 
585  if ( !d->wallet ) {
586  d->walletOpenFailed = true;
587  return 0;
588  }
589 
590  d->prepareWallet();
591  return d->wallet;
592 }
593 
594 void TransportManagerPrivate::prepareWallet()
595 {
596  if ( !wallet ) {
597  return;
598  }
599  if ( !wallet->hasFolder( WALLET_FOLDER ) ) {
600  wallet->createFolder( WALLET_FOLDER );
601  }
602  wallet->setFolder( WALLET_FOLDER );
603 }
604 
605 void TransportManager::loadPasswords()
606 {
607  foreach ( Transport *t, d->transports ) {
608  t->readPassword();
609  }
610 
611  // flush the wallet queue
612  const QList<TransportJob*> copy = d->walletQueue;
613  d->walletQueue.clear();
614  foreach ( TransportJob *job, copy ) {
615  job->start();
616  }
617 
618  emit passwordsChanged();
619 }
620 
621 void TransportManager::loadPasswordsAsync()
622 {
623  kDebug();
624 
625  // check if there is anything to do at all
626  bool found = false;
627  foreach ( Transport *t, d->transports ) {
628  if ( !t->isComplete() ) {
629  found = true;
630  break;
631  }
632  }
633  if ( !found ) {
634  return;
635  }
636 
637  // async wallet opening
638  if ( !d->wallet && !d->walletOpenFailed ) {
639  WId window = 0;
640  if ( qApp->activeWindow() ) {
641  window = qApp->activeWindow()->winId();
642  } else if ( !QApplication::topLevelWidgets().isEmpty() ) {
643  window = qApp->topLevelWidgets().first()->winId();
644  }
645 
646  d->wallet = Wallet::openWallet( Wallet::NetworkWallet(), window,
647  Wallet::Asynchronous );
648  if ( d->wallet ) {
649  connect( d->wallet, SIGNAL(walletOpened(bool)), SLOT(slotWalletOpened(bool)) );
650  d->walletAsyncOpen = true;
651  } else {
652  d->walletOpenFailed = true;
653  loadPasswords();
654  }
655  return;
656  }
657  if ( d->wallet && !d->walletAsyncOpen ) {
658  loadPasswords();
659  }
660 }
661 
662 void TransportManagerPrivate::slotWalletOpened( bool success )
663 {
664  kDebug();
665  walletAsyncOpen = false;
666  if ( !success ) {
667  walletOpenFailed = true;
668  delete wallet;
669  wallet = 0;
670  } else {
671  prepareWallet();
672  }
673  q->loadPasswords();
674 }
675 
676 void TransportManagerPrivate::validateDefault()
677 {
678  if ( !q->transportById( defaultTransportId, false ) ) {
679  if ( q->isEmpty() ) {
680  defaultTransportId = -1;
681  } else {
682  defaultTransportId = transports.first()->id();
683  writeConfig();
684  }
685  }
686 }
687 
688 void TransportManagerPrivate::migrateToWallet()
689 {
690  // check if we tried this already
691  static bool firstRun = true;
692  if ( !firstRun ) {
693  return;
694  }
695  firstRun = false;
696 
697  // check if we are the main instance
698  if ( !isMainInstance ) {
699  return;
700  }
701 
702  // check if migration is needed
703  QStringList names;
704  foreach ( Transport *t, transports ) {
705  if ( t->needsWalletMigration() ) {
706  names << t->name();
707  }
708  }
709  if ( names.isEmpty() ) {
710  return;
711  }
712 
713  // ask user if he wants to migrate
714  int result = KMessageBox::questionYesNoList(
715  0,
716  i18n( "The following mail transports store their passwords in an "
717  "unencrypted configuration file.\nFor security reasons, "
718  "please consider migrating these passwords to KWallet, the "
719  "KDE Wallet management tool,\nwhich stores sensitive data "
720  "for you in a strongly encrypted file.\n"
721  "Do you want to migrate your passwords to KWallet?" ),
722  names, i18n( "Question" ),
723  KGuiItem( i18n( "Migrate" ) ), KGuiItem( i18n( "Keep" ) ),
724  QString::fromLatin1( "WalletMigrate" ) );
725  if ( result != KMessageBox::Yes ) {
726  return;
727  }
728 
729  // perform migration
730  foreach ( Transport *t, transports ) {
731  if ( t->needsWalletMigration() ) {
732  t->migrateToWallet();
733  }
734  }
735 }
736 
737 void TransportManagerPrivate::dbusServiceUnregistered()
738 {
739  QDBusConnection::sessionBus().registerService( DBUS_SERVICE_NAME );
740 }
741 
742 void TransportManagerPrivate::agentTypeAdded( const Akonadi::AgentType &atype )
743 {
744  using namespace Akonadi;
745  if ( atype.capabilities().contains( QLatin1String( "MailTransport" ) ) ) {
746  TransportType type;
747  type.d->mType = Transport::EnumType::Akonadi;
748  type.d->mAgentType = atype;
749  type.d->mName = atype.name();
750  type.d->mDescription = atype.description();
751  types << type;
752  kDebug() << "Added new Akonadi type" << atype.name();
753  }
754 }
755 
756 void TransportManagerPrivate::agentTypeRemoved( const Akonadi::AgentType &atype )
757 {
758  using namespace Akonadi;
759  foreach ( const TransportType &type, types ) {
760  if ( type.type() == Transport::EnumType::Akonadi &&
761  type.agentType() == atype ) {
762  types.removeAll( type );
763  kDebug() << "Removed Akonadi type" << atype.name();
764  }
765  }
766 }
767 
768 void TransportManagerPrivate::jobResult( KJob *job )
769 {
770  walletQueue.removeAll( static_cast<TransportJob*>( job ) );
771 }
772 
773 #include "moc_transportmanager.cpp"
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