kmvirtualmanager.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 "kmvirtualmanager.h"
00021 #include "kmprinter.h"
00022 #include "kmfactory.h"
00023 #include "kmmanager.h"
00024 #include "kprinter.h"
00025 
00026 #include <stdlib.h>
00027 #include <qfile.h>
00028 #include <qtextstream.h>
00029 #include <qdir.h>
00030 #include <qfileinfo.h>
00031 #include <klocale.h>
00032 #include <kstandarddirs.h>
00033 #include <kurl.h>
00034 #include <kdebug.h>
00035 #include <kmessagebox.h>
00036 
00037 #include <unistd.h>
00038 
00039 static QString instanceName(const QString& prname, const QString& instname)
00040 {
00041     QString str(prname);
00042     if (!instname.isEmpty())
00043         str.append("/"+instname);
00044     return str;
00045 }
00046 
00047 KMVirtualManager::KMVirtualManager(KMManager *parent, const char *name)
00048 : QObject(parent,name), m_manager(parent)
00049 {
00050 }
00051 
00052 KMVirtualManager::~KMVirtualManager()
00053 {
00054 }
00055 
00056 KMPrinter* KMVirtualManager::findPrinter(const QString& name)
00057 {
00058         return m_manager->findPrinter(name);
00059 }
00060 
00061 KMPrinter* KMVirtualManager::findInstance(KMPrinter *p, const QString& name)
00062 {
00063     QString instname(instanceName(p->printerName(),name));
00064     return findPrinter(instname);
00065 }
00066 
00067 void KMVirtualManager::addPrinter(KMPrinter *p)
00068 {
00069     if (p && p->isValid())
00070     {
00071         KMPrinter   *other = findPrinter(p->name());
00072         if (other)
00073         {
00074             other->copy(*p);
00075             // Replace default options with the new loaded ones: this is needed
00076             // if we want to handle 2 lpoptions correctly (system-wide and local).
00077             // Anyway, the virtual printers will be reloaded only if something has
00078             // changed in one of the files, so it's better to reset everything, to
00079             // be sure to use the new changes. Edited options will be left unchanged.
00080             other->setDefaultOptions(p->defaultOptions());
00081             delete p;
00082         }
00083         else
00084                         m_manager->addPrinter(p);
00085     }
00086     else
00087         delete p;
00088 }
00089 
00090 void KMVirtualManager::setDefault(KMPrinter *p, bool saveflag)
00091 {
00092         m_manager->setSoftDefault(p);
00093         m_defaultprinter = (p ? p->printerName() : QString::null);
00094     if (saveflag) triggerSave();
00095 }
00096 
00097 bool KMVirtualManager::isDefault(KMPrinter *p, const QString& name)
00098 {
00099     QString instname(instanceName(p->printerName(),name));
00100     KMPrinter   *printer = findPrinter(instname);
00101     if (printer)
00102         return printer->isSoftDefault();
00103     else
00104         return false;
00105 }
00106 
00107 void KMVirtualManager::create(KMPrinter *p, const QString& name)
00108 {
00109     QString instname = instanceName(p->printerName(),name);
00110     if (findPrinter(instname) != NULL) return;
00111     KMPrinter   *printer = new KMPrinter;
00112     printer->setName(instname);
00113     printer->setPrinterName(p->printerName());
00114     printer->setInstanceName(name);
00115     if (!name.isEmpty())
00116         printer->setType(p->type()|KMPrinter::Virtual);
00117     // we need some options to know how to load the driver
00118     if (p->isSpecial())
00119         printer->setOptions(p->options());
00120     m_manager->addPrinter(printer);
00121     triggerSave();
00122 }
00123 
00124 void KMVirtualManager::copy(KMPrinter *p, const QString& src, const QString& name)
00125 {
00126     QString instsrc(instanceName(p->printerName(),src)), instname(instanceName(p->printerName(),name));
00127     KMPrinter   *prsrc = findPrinter(instsrc);
00128     if (!prsrc || findPrinter(instname) != NULL) return;
00129     KMPrinter   *printer = new KMPrinter;
00130     printer->copy(*prsrc);
00131     printer->setName(instname);
00132     printer->setInstanceName(name);
00133         printer->setDefaultOptions(prsrc->defaultOptions());
00134         m_manager->addPrinter(printer);
00135     triggerSave();
00136 }
00137 
00138 void KMVirtualManager::remove(KMPrinter *p, const QString& name)
00139 {
00140         QString instname = instanceName(p->printerName(),name);
00141     KMPrinter   *printer = findPrinter(instname);
00142     if (!printer) return;
00143         if (name.isEmpty())
00144         { // remove default instance => only remove options, keep the KMPrinter object
00145                 printer->setDefaultOptions(QMap<QString,QString>());
00146                 printer->setEditedOptions(QMap<QString,QString>());
00147                 printer->setEdited(false);
00148         }
00149         else
00150             m_manager->m_printers.removeRef(printer);
00151     triggerSave();
00152 }
00153 
00154 void KMVirtualManager::setAsDefault(KMPrinter *p, const QString& name, QWidget *parent)
00155 {
00156     QString instname(instanceName(p->printerName(),name));
00157 
00158     if ( p->isSpecial() )
00159     {
00160         if ( KMessageBox::warningContinueCancel( parent,
00161                     i18n( "<qt>You are about to set a pseudo-printer as your personal default. "
00162                           "This setting is specific to KDE and will not be available outside KDE "
00163                           "applications. Note that this will only make your personal default printer "
00164                           "as undefined for non-KDE applications and should not prevent you from "
00165                           "printing normally. Do you really want to set <b>%1</b> as your personal default?</qt>" ).arg( instname ),
00166                     QString::null, i18n("Set as Default"), "setSpecialAsDefault" ) == KMessageBox::No )
00167             return;
00168     }
00169 
00170     KMPrinter   *printer = findPrinter(instname);
00171     if (!printer)
00172     { // create it if necessary
00173         create(p,name);
00174         printer = findPrinter(instname);
00175     }
00176     if (printer)
00177         setDefault(printer,true);
00178 }
00179 
00180 void KMVirtualManager::refresh()
00181 {
00182     QFileInfo   fi(QDir::homeDirPath() + QFile::decodeName("/.lpoptions"));
00183     QFileInfo   fi2(QFile::decodeName("/etc/cups/lpoptions"));
00184 
00185     // if root, then only use global file: trick -> use twice the same file
00186     if (getuid() == 0)
00187         fi.setFile(fi2.absFilePath());
00188 
00189     if (!m_checktime.isValid() || m_checktime < QMAX(fi.lastModified(),fi2.lastModified()))
00190     {
00191                 m_defaultprinter = QString::null;
00192         if (fi2.exists())
00193             loadFile(fi2.absFilePath());
00194         if (fi.exists() && fi.absFilePath() != fi2.absFilePath())
00195                     loadFile(fi.absFilePath());
00196         m_checktime = QMAX(fi.lastModified(),fi2.lastModified());
00197     }
00198         else
00199         { // parse printers looking for instances -> undiscarded them, real printers
00200           // are undiscarded by the manager itself. Also update printer status.
00201                 QPtrListIterator<KMPrinter>        it(m_manager->m_printers);
00202                 for (;it.current();++it)
00203                         if (!it.current()->instanceName().isEmpty())
00204             {
00205                 checkPrinter(it.current());
00206                 if (it.current()->isValid()) it.current()->setDiscarded(false);
00207             }
00208         }
00209 }
00210 
00211 void KMVirtualManager::checkPrinter(KMPrinter *p)
00212 {
00213     KMPrinter   *realprinter = m_manager->findPrinter(p->printerName());
00214     if (!realprinter || realprinter->isDiscarded())
00215     {
00216         p->setType(KMPrinter::Invalid);
00217         p->setState(KMPrinter::Unknown);
00218     }
00219     else
00220     {
00221         if (!p->instanceName().isEmpty())
00222             p->setType(realprinter->type()|KMPrinter::Virtual);
00223         p->setState(realprinter->state());
00224     }
00225 }
00226 
00227 QString KMVirtualManager::defaultPrinterName()
00228 {
00229         return m_defaultprinter;
00230 }
00231 
00232 void KMVirtualManager::virtualList(QPtrList<KMPrinter>& list, const QString& prname)
00233 {
00234     // load printers if necessary
00235     refresh();
00236 
00237     // then look for instances
00238     list.setAutoDelete(false);
00239     list.clear();
00240     kdDebug(500) << "KMVirtualManager::virtualList() prname=" << prname << endl;
00241     QPtrListIterator<KMPrinter> it(m_manager->m_printers);
00242     for (;it.current();++it)
00243         if (it.current()->printerName() == prname)
00244             list.append(it.current());
00245 }
00246 
00247 void KMVirtualManager::loadFile(const QString& filename)
00248 {
00249     QFile   f(filename);
00250     if (f.exists() && f.open(IO_ReadOnly))
00251     {
00252         QTextStream t(&f);
00253 
00254         QString     line;
00255         QStringList words;
00256         QStringList pair;
00257         KMPrinter   *printer, *realprinter;
00258 
00259         while (!t.eof())
00260         {
00261             line = t.readLine().stripWhiteSpace();
00262             if (line.isEmpty()) continue;
00263             words = QStringList::split(' ',line,false);
00264             if (words.count() < 2) continue;
00265             pair = QStringList::split('/',words[1],false);
00266             realprinter = m_manager->findPrinter(KURL::decode_string(pair[0]));
00267             if (realprinter && !realprinter->isDiscarded())
00268             { // keep only instances corresponding to an existing and
00269               // non discarded printer.
00270                 // "clone" the real printer and modify settings as needed
00271                 printer = new KMPrinter(*realprinter);
00272                 printer->setName(KURL::decode_string(words[1]));
00273                 printer->setPrinterName(KURL::decode_string(pair[0]));
00274                 if (pair.count() > 1)
00275                 {
00276                     printer->setInstanceName(KURL::decode_string(pair[1]));
00277                     printer->addType(KMPrinter::Virtual);
00278                 }
00279                 // parse options
00280                 for (uint i=2; i<words.count(); i++)
00281                 {
00282                     pair = QStringList::split('=',words[i],false);
00283                     printer->setDefaultOption(pair[0],(pair.count() > 1 ? pair[1] : QString::null));
00284                 }
00285                 // add printer to the manager
00286                 addPrinter(printer);    // don't use "printer" after this point !!!
00287                 // check default state
00288                 if (words[0].lower().startsWith("default"))
00289                     setDefault(findPrinter(KURL::decode_string(words[1])),false);
00290             }
00291         }
00292     }
00293 }
00294 
00295 void KMVirtualManager::triggerSave()
00296 {
00297     QString filename;
00298     if (getuid() == 0)
00299     {
00300         if (KStandardDirs::makeDir(QFile::decodeName("/etc/cups")))
00301             filename = QFile::decodeName("/etc/cups/lpoptions");
00302     }
00303     else
00304         filename = QDir::homeDirPath() + QFile::decodeName("/.lpoptions");
00305     if (!filename.isEmpty())
00306     {
00307         saveFile(filename);
00308         m_checktime = QFileInfo(filename).lastModified();
00309     }
00310 }
00311 
00312 void KMVirtualManager::saveFile(const QString& filename)
00313 {
00314     QFile   f(filename);
00315     if (f.open(IO_WriteOnly))
00316     {
00317         QTextStream t(&f);
00318         QPtrListIterator<KMPrinter> it(m_manager->m_printers);
00319         for (;it.current();++it)
00320         {
00321             if (it.current()->isSpecial())
00322             {
00323                 t << ( it.current()->isSoftDefault() ? "DefaultSpecial " : "Special " );
00324                 t << KURL::encode_string_no_slash( it.current()->printerName() );
00325                 if ( !it.current()->instanceName().isEmpty() )
00326                     t << "/" << KURL::encode_string_no_slash( it.current()->instanceName() );
00327             }
00328             else
00329                 t << (it.current()->isSoftDefault() ? "Default " : "Dest ") << it.current()->name();
00330             QMap<QString,QString>   opts = it.current()->defaultOptions();
00331             for (QMap<QString,QString>::ConstIterator oit=opts.begin(); oit!=opts.end(); ++oit)
00332             {
00333                 t << ' ' << oit.key();
00334                 if (!oit.data().isEmpty())
00335                     t << '=' << oit.data();
00336             }
00337             t << endl;
00338         }
00339     }
00340 }
00341 
00342 bool KMVirtualManager::testInstance(KMPrinter *p)
00343 {
00344     QString testpage = KMManager::self()->testPage();
00345     if (testpage.isEmpty())
00346         return false;
00347     else
00348     {
00349         KPrinter    pr;
00350         pr.setPrinterName(p->printerName());
00351         pr.setSearchName(p->name());
00352         pr.setOptions(p->defaultOptions());
00353         return (pr.printFiles(testpage));
00354     }
00355 }
00356 
00357 void KMVirtualManager::reload()
00358 {
00359     reset();
00360 }
00361 
00362 void KMVirtualManager::configChanged()
00363 {
00364     reset();
00365 }
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