diff options
Diffstat (limited to 'kopete/libkopete/kopetepassword.cpp')
| -rw-r--r-- | kopete/libkopete/kopetepassword.cpp | 502 |
1 files changed, 502 insertions, 0 deletions
diff --git a/kopete/libkopete/kopetepassword.cpp b/kopete/libkopete/kopetepassword.cpp new file mode 100644 index 00000000..f0b788a9 --- /dev/null +++ b/kopete/libkopete/kopetepassword.cpp @@ -0,0 +1,502 @@ +/* + kopetepassword.cpp - Kopete Password + + Copyright (c) 2004 by Richard Smith <[email protected]> + Kopete (c) 2002-2004 by the Kopete developers <[email protected]> + + ************************************************************************* + * * + * This library is free software; you can redistribute it and/or * + * modify it under the terms of the GNU Lesser General Public * + * License as published by the Free Software Foundation; either * + * version 2 of the License, or (at your option) any later version. * + * * + ************************************************************************* +*/ + +#include "kopeteuiglobal.h" +#include "kopetepassword.h" +#include "kopetepassworddialog.h" +#include "kopetewalletmanager.h" + +#include <kwallet.h> + +#include <qapplication.h> +#include <qlabel.h> +#include <qlineedit.h> +#include <qcheckbox.h> + +#include <kactivelabel.h> +#include <kapplication.h> +#include <kconfig.h> +#include <kdebug.h> +#include <kdialogbase.h> +#include <klocale.h> +#include <kmessagebox.h> +#include <kiconloader.h> +#include <kpassdlg.h> +#include <kstringhandler.h> + +class Kopete::Password::Private +{ +public: + Private( const QString &group, uint maxLen, bool blanksAllowed ) + : refCount( 1 ), configGroup( group ), remembered( false ), maximumLength( maxLen ), + isWrong( false ), allowBlankPassword( blanksAllowed ) + { + } + Private *incRef() + { + ++refCount; + return this; + } + void decRef() + { + if( --refCount == 0 ) + delete this; + } + /** Reference count */ + int refCount; + /** Group to use for KConfig and KWallet */ + const QString configGroup; + /** Is the password being remembered? */ + bool remembered; + /** The current password in the KConfig file, or QString::null if no password there */ + QString passwordFromKConfig; + /** The maximum length allowed for this password, or -1 if there is no limit */ + uint maximumLength; + /** Is the current password known to be wrong? */ + bool isWrong; + /** Are we allowed to have blank passwords? */ + bool allowBlankPassword; + /** The cached password */ + QString cachedValue; +}; + +/** + * Implementation detail of Kopete::Password: manages a single password request + * @internal + * @author Richard Smith <[email protected]> + */ +class KopetePasswordRequest : public KopetePasswordRequestBase +{ +public: + KopetePasswordRequest( QObject *owner, Kopete::Password &pass ) + : QObject( owner ), mPassword( pass ), mWallet( 0 ) + { + } + + /** + * Start the request - ask for the wallet + */ + void begin() + { + kdDebug( 14010 ) << k_funcinfo << endl; + Kopete::WalletManager::self()->openWallet( this, SLOT( walletReceived( KWallet::Wallet* ) ) ); + } + + void walletReceived( KWallet::Wallet *wallet ) + { + kdDebug( 14010 ) << k_funcinfo << endl; + mWallet = wallet; + processRequest(); + } + + /** + * Got wallet; now carry out whatever action this request represents + */ + virtual void processRequest() = 0; + + void slotOkPressed() {} + void slotCancelPressed() {} + +protected: + Kopete::Password mPassword; + KWallet::Wallet *mWallet; +}; + +/** + * Implementation detail of Kopete::Password: manages a single password retrieval request + * @internal + * @author Richard Smith <[email protected]> + */ +class KopetePasswordGetRequest : public KopetePasswordRequest +{ +public: + KopetePasswordGetRequest( QObject *owner, Kopete::Password &pass ) + : KopetePasswordRequest( owner, pass ) + { + } + + QString grabPassword() + { + // Before trying to read from the wallet, check if the config file holds a password. + // If so, remove it from the config and set it through KWallet instead. + QString pwd; + if ( mPassword.d->remembered && !mPassword.d->passwordFromKConfig.isNull() ) + { + pwd = mPassword.d->passwordFromKConfig; + mPassword.set( pwd ); + return pwd; + } + + if ( mWallet && mWallet->readPassword( mPassword.d->configGroup, pwd ) == 0 && !pwd.isNull() ) + return pwd; + + if ( mPassword.d->remembered && !mPassword.d->passwordFromKConfig.isNull() ) + return mPassword.d->passwordFromKConfig; + + return QString::null; + } + + void finished( const QString &result ) + { + mPassword.d->cachedValue = result; + emit requestFinished( result ); + delete this; + } +}; + +class KopetePasswordGetRequestPrompt : public KopetePasswordGetRequest +{ +public: + KopetePasswordGetRequestPrompt( QObject *owner, Kopete::Password &pass, const QPixmap &image, const QString &prompt, Kopete::Password::PasswordSource source ) + : KopetePasswordGetRequest( owner, pass ), mImage( image ), mPrompt( prompt ), mSource( source ), mView( 0 ) + { + } + + void processRequest() + { + QString result = grabPassword(); + if ( mSource == Kopete::Password::FromUser || result.isNull() ) + doPasswordDialog(); + else + finished( result ); + } + + void doPasswordDialog() + { + kdDebug( 14010 ) << k_funcinfo << endl; + + KDialogBase *passwdDialog = new KDialogBase( Kopete::UI::Global::mainWidget(), "passwdDialog", true, i18n( "Password Required" ), + KDialogBase::Ok | KDialogBase::Cancel, KDialogBase::Ok, true ); + + mView = new KopetePasswordDialog( passwdDialog ); + passwdDialog->setMainWidget( mView ); + + mView->m_text->setText( mPrompt ); + mView->m_image->setPixmap( mImage ); + /* Do not put the default password, or it will confuse those which doesn't echo anything for the password + mView->m_password->insert( password ); + */ + int maxLength = mPassword.maximumLength(); + if ( maxLength != 0 ) + mView->m_password->setMaxLength( maxLength ); + mView->m_password->setFocus(); + + // FIXME: either document what these are for or remove them - lilac + mView->adjustSize(); + passwdDialog->adjustSize(); + + connect( passwdDialog, SIGNAL( okClicked() ), SLOT( slotOkPressed() ) ); + connect( passwdDialog, SIGNAL( cancelClicked() ), SLOT( slotCancelPressed() ) ); + connect( this, SIGNAL( destroyed() ), passwdDialog, SLOT( deleteLater() ) ); + passwdDialog->show(); + } + + void slotOkPressed() + { + QString result = QString::fromLocal8Bit( mView->m_password->password() ); + if ( mView->m_save_passwd->isChecked() ) + mPassword.set( result ); + + finished( result ); + } + + void slotCancelPressed() + { + finished( QString::null ); + } + +private: + QPixmap mImage; + QString mPrompt; + Kopete::Password::PasswordSource mSource; + unsigned int mMaxLength; + KopetePasswordDialog *mView; +}; + +class KopetePasswordGetRequestNoPrompt : public KopetePasswordGetRequest +{ +public: + KopetePasswordGetRequestNoPrompt( QObject *owner, Kopete::Password &pass ) + : KopetePasswordGetRequest( owner, pass ) + { + } + + void processRequest() + { + finished( grabPassword() ); + } +}; + +/** + * Implementation detail of Kopete::Password: manages a single password change request + * @internal + * @author Richard Smith <[email protected]> + */ +class KopetePasswordSetRequest : public KopetePasswordRequest +{ +public: + KopetePasswordSetRequest( Kopete::Password &pass, const QString &newPass ) + : KopetePasswordRequest( 0, pass ), mNewPass( newPass ) + { + if ( KApplication *app = KApplication::kApplication() ) + app->ref(); + } + ~KopetePasswordSetRequest() + { + if ( KApplication *app = KApplication::kApplication() ) + app->deref(); + kdDebug( 14010 ) << k_funcinfo << "job complete" << endl; + } + void processRequest() + { + if ( setPassword() ) + { + mPassword.setWrong( false ); + mPassword.d->cachedValue = mNewPass; + } + delete this; + } + bool setPassword() + { + kdDebug( 14010 ) << k_funcinfo << " setting password for " << mPassword.d->configGroup << endl; + + if ( mWallet && mWallet->writePassword( mPassword.d->configGroup, mNewPass ) == 0 ) + { + mPassword.d->remembered = true; + mPassword.d->passwordFromKConfig = QString::null; + mPassword.writeConfig(); + return true; + } + + if ( KWallet::Wallet::isEnabled() ) + { + // If we end up here, the wallet is enabled, but failed somehow. + // Ask the user what to do now. + + //NOTE: This will start a nested event loop. However, this is fine; the only code we + // call after this point is in Kopete::Password, so as long as we've not been deleted + // everything should work out OK. We have no parent QObject, so we should survive. + if ( KMessageBox::warningContinueCancel( Kopete::UI::Global::mainWidget(), + i18n( "<qt>Kopete is unable to save your password securely in your wallet;<br>" + "do you want to save the password in the <b>unsafe</b> configuration file instead?</qt>" ), + i18n( "Unable to Store Secure Password" ), + KGuiItem( i18n( "Store &Unsafe" ), QString::fromLatin1( "unlock" ) ), + QString::fromLatin1( "KWalletFallbackToKConfig" ) ) != KMessageBox::Continue ) + { + return false; + } + } + mPassword.d->remembered = true; + mPassword.d->passwordFromKConfig = mNewPass; + mPassword.writeConfig(); + return true; + } + +private: + QString mNewPass; +}; + +class KopetePasswordClearRequest : public KopetePasswordRequest +{ +public: + KopetePasswordClearRequest( Kopete::Password &pass ) + : KopetePasswordRequest( 0, pass ) + { + if ( KApplication *app = KApplication::kApplication() ) + app->ref(); + } + ~KopetePasswordClearRequest() + { + if ( KApplication *app = KApplication::kApplication() ) + app->deref(); + kdDebug( 14010 ) << k_funcinfo << "job complete" << endl; + } + void processRequest() + { + if ( clearPassword() ) + { + mPassword.setWrong( true ); + mPassword.d->cachedValue = QString::null; + } + + delete this; + } + bool clearPassword() + { + kdDebug( 14010 ) << k_funcinfo << " clearing password" << endl; + + mPassword.d->remembered = false; + mPassword.d->passwordFromKConfig = QString::null; + mPassword.writeConfig(); + if ( mWallet ) + mWallet->removeEntry( mPassword.d->configGroup ); + return true; + } +}; + +Kopete::Password::Password( const QString &configGroup, uint maximumLength, const char *name ) + : QObject( 0, name ), d( new Private( configGroup, maximumLength, false ) ) +{ + readConfig(); +} + +Kopete::Password::Password( const QString &configGroup, uint maximumLength, + bool allowBlankPassword, const char *name ) + : QObject( 0, name ), d( new Private( configGroup, maximumLength, allowBlankPassword ) ) +{ + readConfig(); +} + +Kopete::Password::Password( Password &other, const char *name ) + : QObject( 0, name ), d( other.d->incRef() ) +{ +} + +Kopete::Password::~Password() +{ + d->decRef(); +} + +Kopete::Password &Kopete::Password::operator=( Password &other ) +{ + if ( d == other.d ) return *this; + d->decRef(); + d = other.d->incRef(); + return *this; +} + +void Kopete::Password::readConfig() +{ + KConfig *config = KGlobal::config(); + config->setGroup( d->configGroup ); + + QString passwordCrypted = config->readEntry( "Password" ); + if ( passwordCrypted.isNull() ) + d->passwordFromKConfig = QString::null; + else + d->passwordFromKConfig = KStringHandler::obscure( passwordCrypted ); + + d->remembered = config->readBoolEntry( "RememberPassword", false ); + d->isWrong = config->readBoolEntry( "PasswordIsWrong", false ); +} + +void Kopete::Password::writeConfig() +{ + KConfig *config = KGlobal::config(); + if(!config->hasGroup(d->configGroup)) + { + //### (KOPETE) + // if the kopete account has been removed, we have no way to know it. + // but we don't want in any case to recreate the group. + // see Bug 106460 + // (the problem is that when we remove the account, we remove the password + // also, which cause a call to this function ) + return; + } + + config->setGroup( d->configGroup ); + + if ( d->remembered && !d->passwordFromKConfig.isNull() ) + config->writeEntry( "Password", KStringHandler::obscure( d->passwordFromKConfig ) ); + else + config->deleteEntry( "Password" ); + + config->writeEntry( "RememberPassword", d->remembered ); + config->writeEntry( "PasswordIsWrong", d->isWrong ); +} + +int Kopete::Password::preferredImageSize() +{ + return IconSize(KIcon::Toolbar); +} + +bool Kopete::Password::allowBlankPassword() +{ + return d->allowBlankPassword; +} + +uint Kopete::Password::maximumLength() +{ + return d->maximumLength; +} + +void Kopete::Password::setMaximumLength( uint max ) +{ + d->maximumLength = max; +} + +bool Kopete::Password::isWrong() +{ + return d->isWrong; +} + +void Kopete::Password::setWrong( bool bWrong ) +{ + d->isWrong = bWrong; + writeConfig(); + + if ( bWrong ) d->cachedValue = QString::null; +} + +void Kopete::Password::requestWithoutPrompt( QObject *returnObj, const char *slot ) +{ + KopetePasswordRequest *request = new KopetePasswordGetRequestNoPrompt( returnObj, *this ); + // call connect on returnObj so we can still connect if 'slot' is protected/private + returnObj->connect( request, SIGNAL( requestFinished( const QString & ) ), slot ); + request->begin(); +} + +void Kopete::Password::request( QObject *returnObj, const char *slot, const QPixmap &image, const QString &prompt, Kopete::Password::PasswordSource source ) +{ + KopetePasswordRequest *request = new KopetePasswordGetRequestPrompt( returnObj, *this, image, prompt, source ); + returnObj->connect( request, SIGNAL( requestFinished( const QString & ) ), slot ); + request->begin(); +} + +QString Kopete::Password::cachedValue() +{ + return d->cachedValue; +} + +void Kopete::Password::set( const QString &pass ) +{ + // if we're being told to forget the password, and we aren't remembering one, + // don't try to open the wallet. fixes bug #71804. + if( pass.isNull() && !d->allowBlankPassword ) + { + if( remembered() ) + clear(); + return; + } + + KopetePasswordRequest *request = new KopetePasswordSetRequest( *this, pass ); + request->begin(); +} + +void Kopete::Password::clear() +{ + KopetePasswordClearRequest *request = new KopetePasswordClearRequest( *this ); + request->begin(); +} + +bool Kopete::Password::remembered() +{ + return d->remembered; +} + +#include "kopetepassword.moc" + +// vim: set noet ts=4 sts=4 sw=4: |