kmmanager.cpp

00001 /*
00002  *  This file is part of the KDE libraries
00003  *  Copyright (c) 2001 Michael Goffioul <kdeprint@swing.be>
00004  *
00005  *  This library is free software; you can redistribute it and/or
00006  *  modify it under the terms of the GNU Library General Public
00007  *  License version 2 as published by the Free Software Foundation.
00008  *
00009  *  This library is distributed in the hope that it will be useful,
00010  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
00011  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012  *  Library General Public License for more details.
00013  *
00014  *  You should have received a copy of the GNU Library General Public License
00015  *  along with this library; see the file COPYING.LIB.  If not, write to
00016  *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
00017  *  Boston, MA 02110-1301, USA.
00018  **/
00019 
00020 #include "kmmanager.h"
00021 #include "kmprinter.h"
00022 #include "kmdbentry.h"
00023 #include "kmfactory.h"
00024 #include "kmvirtualmanager.h"
00025 #include "kmspecialmanager.h"
00026 #include "printerfilter.h"
00027 #include "kprinter.h"
00028 
00029 #include <zlib.h>
00030 #include <qfile.h>
00031 #include <kstandarddirs.h>
00032 #include <kconfig.h>
00033 #include <klocale.h>
00034 #include <kdebug.h>
00035 #include <kapplication.h>
00036 #include <klibloader.h>
00037 #include <unistd.h>
00038 
00039 KMManager::KMManager(QObject *parent, const char *name)
00040 : QObject(parent,name)
00041 {
00042     m_printers.setAutoDelete(true);
00043     m_fprinters.setAutoDelete(false);
00044     m_hasmanagement = false;
00045     m_printeroperationmask = 0;
00046     m_serveroperationmask = 0;
00047     m_printerfilter = new PrinterFilter(this);
00048 
00049     m_specialmgr = new KMSpecialManager(this);
00050     Q_CHECK_PTR(m_specialmgr);
00051     m_virtualmgr = new KMVirtualManager(this);
00052     Q_CHECK_PTR(m_virtualmgr);
00053 
00054     // set default to true to not disturb code that
00055     // hasn't been adapted yet. Otherwise, should be false
00056     m_updatepossible = true;
00057 }
00058 
00059 KMManager::~KMManager()
00060 {
00061 }
00062 
00063 KMManager* KMManager::self()
00064 {
00065     return KMFactory::self()->manager();
00066 }
00067 
00068 bool KMManager::notImplemented()
00069 {
00070     setErrorMsg(i18n("This operation is not implemented."));
00071     return false;
00072 }
00073 
00074 bool KMManager::modifyPrinter(KMPrinter *oldp, KMPrinter *newp)
00075 {
00076     if (oldp->printerName() != newp->printerName())
00077     {
00078         // remove the old one, then create the new one. But before removing
00079         // the old one, retrieve its driver so that the new printer has the
00080         // same.
00081         DrMain  *driver = loadPrinterDriver(oldp, true);
00082         newp->setDriver(driver);
00083         if (!removePrinter(oldp))
00084             return false;
00085     }
00086     return createPrinter(newp);
00087 }
00088 
00089 bool KMManager::createPrinter(KMPrinter*)
00090 {
00091     return notImplemented();
00092 }
00093 
00094 bool KMManager::removePrinter(KMPrinter*)
00095 {
00096     return notImplemented();
00097 }
00098 
00099 bool KMManager::removePrinter(const QString& name)
00100 {
00101     KMPrinter   *p = findPrinter(name);
00102     return (p ? removePrinter(p) : false);
00103 }
00104 
00105 bool KMManager::enablePrinter(KMPrinter*, bool)
00106 {
00107     return notImplemented();
00108 }
00109 
00110 bool KMManager::enablePrinter(const QString& name, bool state)
00111 {
00112     KMPrinter   *p = findPrinter(name);
00113     return (p ? enablePrinter(p, state) : false);
00114 }
00115 
00116 bool KMManager::startPrinter(KMPrinter*, bool)
00117 {
00118     return notImplemented();
00119 }
00120 
00121 bool KMManager::startPrinter(const QString& name, bool state)
00122 {
00123     KMPrinter   *p = findPrinter(name);
00124     return (p ? startPrinter(p, state) : false);
00125 }
00126 
00127 bool KMManager::upPrinter(KMPrinter *p, bool state)
00128 {
00129     bool    result = enablePrinter(p, state);
00130     if (result)
00131         result = startPrinter(p, state);
00132     return result;
00133 }
00134 
00135 bool KMManager::completePrinter(KMPrinter*)
00136 {
00137     notImplemented();
00138     return true;    // not false to allow instance config/creation
00139 }
00140 
00141 bool KMManager::completePrinterShort(KMPrinter *p)
00142 {
00143     return completePrinter(p);
00144 }
00145 
00146 bool KMManager::completePrinter(const QString& name)
00147 {
00148     KMPrinter   *p = findPrinter(name);
00149     return (p ? completePrinter(p) : false);
00150 }
00151 
00152 bool KMManager::setDefaultPrinter(KMPrinter*)
00153 {
00154     return notImplemented();
00155 }
00156 
00157 bool KMManager::setDefaultPrinter(const QString& name)
00158 {
00159     KMPrinter   *p = findPrinter(name);
00160     return (p ? setDefaultPrinter(p) : false);
00161 }
00162 
00163 bool KMManager::testPrinter(KMPrinter *prt)
00164 {
00165     // standard Test mechanism
00166     QString testpage = testPage();
00167     if (testpage.isEmpty())
00168     {
00169         setErrorMsg(i18n("Unable to locate test page."));
00170         return false;
00171     }
00172     KPrinter    pr;
00173     bool        prExist = (findPrinter(prt->printerName()) != 0), result(false);
00174     pr.setPrinterName(prt->printerName());
00175     pr.setSearchName(prt->name());
00176     pr.setDocName("KDE Print Test");
00177     // the printing mechanism may involve some needed operations on the
00178     // printer, so temporary printers (created when testing) should be
00179     // temporarily added to the printer list, then taken out.
00180     if (!prExist)
00181         m_printers.append(prt);
00182     result = pr.printFiles(testpage, false, false);
00183     if (!prExist)
00184         m_printers.take(m_printers.count()-1);
00185     return result;
00186     // return notImplemented();
00187 }
00188 
00189 KMPrinter* KMManager::findPrinter(const QString& name)
00190 {
00191     QPtrListIterator<KMPrinter> it(m_printers);
00192     for (;it.current();++it)
00193         if (it.current()->name() == name) return it.current();
00194     //setErrorMsg(i18n("%1: printer not found.").arg(name));
00195     return 0;
00196 }
00197 
00198 KMPrinter* KMManager::softDefault() const
00199 {
00200     QPtrListIterator<KMPrinter> it(m_printers);
00201     for (;it.current();++it)
00202         if (it.current()->isSoftDefault()) return it.current();
00203     return 0;
00204 }
00205 
00206 KMPrinter* KMManager::hardDefault() const
00207 {
00208     QPtrListIterator<KMPrinter> it(m_printers);
00209     for (; it.current();++it)
00210         if (it.current()->isHardDefault())
00211             return it.current();
00212     return 0;
00213 }
00214 
00215 KMPrinter* KMManager::defaultPrinter()
00216 {
00217     printerList(false);
00218     KMPrinter   *prt = softDefault();
00219     if (!prt)
00220         prt = hardDefault();
00221     return prt;
00222 }
00223 
00224 QPtrList<KMPrinter>* KMManager::printerList(bool reload)
00225 {
00226     setErrorMsg(QString::null);
00227     //kdDebug(500) << "Getting printer list: " << reload << endl;
00228 
00229     if (reload || m_printers.count() == 0)
00230     {
00231         // reset filter
00232         m_printerfilter->update();
00233         m_fprinters.clear();
00234 
00235         // first discard all printers
00236         discardAllPrinters(true);
00237 
00238         // make sure virtual printers will be reloaded if we don't have
00239         // any printer (for example if settings are wrong)
00240         if (m_printers.count() == 0)
00241             m_virtualmgr->reset();
00242 
00243         // List real printers (in subclasses)
00244         if ( m_updatepossible )
00245             listPrinters();
00246         // Listing of special printers has to be done before the instances
00247         // because now special printers can also have instances
00248         m_specialmgr->refresh();
00249         // list virtual printers (and undiscard virtual printers if necessary)
00250         if ( m_updatepossible )
00251             m_virtualmgr->refresh();
00252 
00253         // remove discarded printers
00254         for (uint i=0; i<m_printers.count(); i++)
00255         {
00256             KMPrinter   *prt = m_printers.at(i);
00257             if (prt->isDiscarded())
00258             {
00259                 m_printers.remove(i);
00260                 i--;
00261             }
00262             else if (prt->isSpecial() || m_printerfilter->filter(prt))
00263                 m_fprinters.append(prt);
00264         }
00265 
00266         // try to find the default printer from these situations:
00267         //   - it already exists from .lpoptions file
00268         //   - use the PRINTER variable
00269         if (!softDefault())
00270         {
00271             KMPrinter   *defprinter = findPrinter(QString::fromLatin1(getenv("PRINTER")));
00272             if (defprinter)
00273                 setSoftDefault(defprinter);
00274         }
00275     }
00276 
00277     return &m_fprinters;
00278 }
00279 
00280 QPtrList<KMPrinter>* KMManager::printerListComplete(bool reload)
00281 {
00282     printerList(reload);
00283     return &m_printers;
00284 }
00285 
00286 void KMManager::listPrinters()
00287 {
00288     // do nothing
00289 }
00290 
00291 void KMManager::addPrinter(KMPrinter *p)
00292 {
00293     if (p)
00294     {
00295         if (p->name().isEmpty())
00296             // discard printer with empty name
00297             delete p;
00298         else
00299         {
00300             KMPrinter   *other = findPrinter(p->name());
00301             if (other)
00302             {
00303                 other->copy(*p);
00304                 delete p;
00305             }
00306             else
00307             {
00308                 p->setDiscarded(false);
00309                 m_printers.inSort(p);
00310             }
00311         }
00312     }
00313 }
00314 
00315 QString KMManager::driverDbCreationProgram()
00316 {
00317     return QString::null;
00318 }
00319 
00320 QString KMManager::driverDirectory()
00321 {
00322     return QString::null;
00323 }
00324 
00325 DrMain* KMManager::loadPrinterDriver(KMPrinter*, bool)
00326 {
00327     return NULL;
00328 }
00329 
00330 DrMain* KMManager::loadDbDriver(KMDBEntry *entry)
00331 {
00332     return loadFileDriver(entry->file);
00333 }
00334 
00335 DrMain* KMManager::loadFileDriver(const QString&)
00336 {
00337     return NULL;
00338 }
00339 
00340 DrMain* KMManager::loadDriver(KMPrinter *p, bool config)
00341 {
00342     if (p->isSpecial())
00343         return m_specialmgr->loadDriver(p);
00344     else
00345         return loadPrinterDriver(p, config);
00346 }
00347 
00348 bool KMManager::savePrinterDriver(KMPrinter*,DrMain*)
00349 {
00350     return notImplemented();
00351 }
00352 
00353 bool KMManager::uncompressFile(const QString& filename, QString& destname)
00354 {
00355     QFile   f(filename);
00356     bool    result(true);
00357     destname = QString::null;
00358     if (f.exists() && f.open(IO_ReadOnly))
00359     {
00360         char    buf[1024] = {0};
00361         f.readBlock(buf,2);
00362         if ((uchar)(buf[0]) == 037 && (uchar)(buf[1]) == 0213)
00363         {
00364             f.close();
00365             destname = locateLocal("tmp","kdeprint_") + KApplication::randomString(8);
00366             f.setName(destname);
00367 
00368             if (f.open(IO_WriteOnly))
00369             {
00370                 gzFile  in = gzopen(filename.latin1(),"r");
00371                 int n(0);
00372                 while ((n=gzread(in,buf,1024)) > 0)
00373                     if (f.writeBlock(buf,n) != n)
00374                         break;
00375                 if (n != 0) result = false;
00376                 gzclose(in);
00377                 f.close();
00378             }
00379         }
00380     }
00381     return result;
00382 }
00383 
00384 void KMManager::setHardDefault(KMPrinter *p)
00385 {
00386     QPtrListIterator<KMPrinter> it(m_printers);
00387     for (;it.current();++it)
00388         it.current()->setHardDefault(false);
00389     if (p) p->setHardDefault(true);
00390 }
00391 
00392 void KMManager::setSoftDefault(KMPrinter *p)
00393 {
00394     QPtrListIterator<KMPrinter> it(m_printers);
00395     for (;it.current();++it)
00396         {
00397         it.current()->setSoftDefault(false);
00398         it.current()->setOwnSoftDefault(false);
00399         }
00400     if (p)
00401         {
00402                 p->setSoftDefault(true);
00403                 KMPrinter       *pp = findPrinter(p->printerName());
00404                 if (pp)
00405                         pp->setOwnSoftDefault(true);
00406         }
00407 }
00408 
00409 bool KMManager::restartServer()
00410 {
00411     return notImplemented();
00412 }
00413 
00414 bool KMManager::configureServer(QWidget*)
00415 {
00416     return notImplemented();
00417 }
00418 
00419 QString KMManager::testPage()
00420 {
00421     KConfig *conf = KMFactory::self()->printConfig();
00422     conf->setGroup("General");
00423     QString tpage = conf->readPathEntry("TestPage");
00424     if (tpage.isEmpty())
00425         tpage = locate("data","kdeprint/testprint.ps");
00426     return tpage;
00427 }
00428 
00429 void KMManager::discardAllPrinters(bool on)
00430 {
00431     QPtrListIterator<KMPrinter> it(m_printers);
00432     for (;it.current();++it)
00433         if (!on || !it.current()->isSpecial())
00434             it.current()->setDiscarded(on);
00435 }
00436 
00437 bool KMManager::validateDbDriver(KMDBEntry*)
00438 {
00439     return true;
00440 }
00441 
00442 bool KMManager::createSpecialPrinter(KMPrinter *p)
00443 {
00444     if (p && p->isSpecial())
00445     {
00446         KMPrinter   *old = findPrinter(p->name());
00447         if (old && !old->isSpecial())
00448         {
00449             setErrorMsg(i18n("Can't overwrite regular printer with special printer settings."));
00450             return false;
00451         }
00452         // if the special printer already exists, it will be overwritten
00453         addPrinter(p);
00454         return m_specialmgr->savePrinters();
00455     }
00456     return false;
00457 }
00458 
00459 bool KMManager::removeSpecialPrinter(KMPrinter *p)
00460 {
00461     if (p && p->isSpecial() && m_printers.findRef(p) != -1)
00462     {
00463         m_printers.removeRef(p);
00464         return m_specialmgr->savePrinters();
00465     }
00466     return false;
00467 }
00468 
00469 /* format of output:
00470     Class0, URI0, Desc0, Printer0, Class1, URI1, Desc1, Printer1, ...
00471 
00472   Defaults to 3 parallel printers
00473 */
00474 QStringList KMManager::detectLocalPrinters()
00475 {
00476     QStringList list;
00477     for (int i=0; i<3; i++)
00478         list << QString::null << QString::fromLatin1("parallel:/dev/lp%1").arg(i) << i18n("Parallel Port #%1").arg(i+1) << QString::null;
00479     return list;
00480 }
00481 
00482 int KMManager::addPrinterWizard(QWidget *parent)
00483 {
00484     KLibrary    *lib = KLibLoader::self()->library("libkdeprint_management_module");
00485     if (!lib)
00486         setErrorMsg(i18n("Unable to load KDE print management library: %1").arg(KLibLoader::self()->lastErrorMessage()));
00487     else
00488     {
00489         int (*func)(QWidget*) = (int(*)(QWidget*))lib->symbol("add_printer_wizard");
00490         if (!func)
00491             setErrorMsg(i18n("Unable to find wizard object in management library."));
00492         else
00493             return func(parent);
00494     }
00495     return (-1);
00496 }
00497 
00498 bool KMManager::invokeOptionsDialog(QWidget *parent)
00499 {
00500     KLibrary    *lib = KLibLoader::self()->library("libkdeprint_management_module");
00501     if (!lib)
00502         setErrorMsg(i18n("Unable to load KDE print management library: %1").arg(KLibLoader::self()->lastErrorMessage()));
00503     else
00504     {
00505         bool (*func)(QWidget*) = (bool(*)(QWidget*))lib->symbol("config_dialog");
00506         if (!func)
00507             setErrorMsg(i18n("Unable to find options dialog in management library."));
00508         else
00509             return func(parent);
00510     }
00511     return false;
00512 }
00513 
00514 void KMManager::createPluginActions(KActionCollection*)
00515 {
00516 }
00517 
00518 void KMManager::validatePluginActions(KActionCollection*, KMPrinter*)
00519 {
00520 }
00521 
00522 void KMManager::enableFilter(bool on)
00523 {
00524     m_printerfilter->setEnabled(on);
00525 }
00526 
00527 bool KMManager::isFilterEnabled() const
00528 {
00529     return m_printerfilter->isEnabled();
00530 }
00531 
00532 QString KMManager::stateInformation()
00533 {
00534     return i18n("No plugin information available");
00535 }
00536 
00537 void KMManager::checkUpdatePossible()
00538 {
00539     m_updatepossible = false;
00540     checkUpdatePossibleInternal();
00541 }
00542 
00543 void KMManager::checkUpdatePossibleInternal()
00544 {
00545     setUpdatePossible( true );
00546 }
00547 
00548 void KMManager::setUpdatePossible( bool value )
00549 {
00550     if ( value != m_updatepossible )
00551         m_virtualmgr->reset();
00552     m_updatepossible = value;
00553     emit updatePossible( m_updatepossible );
00554 }
00555 
00556 #include "kmmanager.moc"
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