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493 lines
13 KiB
493 lines
13 KiB
/*
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* This file is part of the KDE libraries
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* Copyright (c) 2001 Michael Goffioul <tdeprint@swing.be>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License version 2 as published by the Free Software Foundation.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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**/
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#include "kmlprmanager.h"
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#include "printcapreader.h"
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#include "printcapentry.h"
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#include "lpchelper.h"
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#include "matichandler.h"
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#include "apshandler.h"
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#include "lprngtoolhandler.h"
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#include "lprsettings.h"
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#include "driver.h"
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#include "editentrydialog.h"
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#include <tqfileinfo.h>
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#include <tqptrlist.h>
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#include <klocale.h>
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#include <kstandarddirs.h>
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#include <kdebug.h>
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#include <kprinter.h>
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#include <kprocess.h>
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#include <tdeaction.h>
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#include <kmessagebox.h>
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#include <klibloader.h>
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#include <stdlib.h>
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#include <unistd.h>
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KMLprManager::KMLprManager(TQObject *parent, const char *name, const TQStringList & /*args*/)
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: KMManager(parent,name)
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{
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m_handlers.setAutoDelete(true);
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m_handlerlist.setAutoDelete(false);
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m_entries.setAutoDelete(true);
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m_lpchelper = new LpcHelper(this);
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m_currentprinter = 0;
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setHasManagement(getuid() == 0);
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setPrinterOperationMask(
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KMManager::PrinterEnabling |
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KMManager::PrinterConfigure |
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KMManager::PrinterTesting |
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KMManager::PrinterCreation |
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KMManager::PrinterRemoval |
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KMManager::PrinterTesting
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);
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initHandlers();
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}
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void KMLprManager::listPrinters()
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{
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TQFileInfo fi(LprSettings::self()->printcapFile());
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if (m_lpchelper)
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m_lpchelper->updateStates();
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// update only if needed
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if (!m_updtime.isValid() || m_updtime < fi.lastModified())
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{
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// cleanup previous entries
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m_entries.clear();
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// notify handlers
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TQPtrListIterator<LprHandler> hit(m_handlerlist);
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for (; hit.current(); ++hit)
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hit.current()->reset();
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// try to open the printcap file and parse it
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PrintcapReader reader;
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TQFile f(fi.absFilePath());
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PrintcapEntry *entry;
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if (f.exists() && f.open(IO_ReadOnly))
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{
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reader.setPrintcapFile(&f);
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while ((entry = reader.nextEntry()) != NULL)
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{
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TQPtrListIterator<LprHandler> it(m_handlerlist);
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for (; it.current(); ++it)
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if (it.current()->validate(entry))
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{
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KMPrinter *prt = it.current()->createPrinter(entry);
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checkPrinterState(prt);
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prt->setOption("kde-lpr-handler", it.current()->name());
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addPrinter(prt);
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break;
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}
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m_entries.insert(entry->name, entry);
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}
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}
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// save update time
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m_updtime = fi.lastModified();
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}
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else
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{
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TQPtrListIterator<KMPrinter> it(m_printers);
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for (; it.current(); ++it)
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if (!it.current()->isSpecial())
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{
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it.current()->setDiscarded(false);
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checkPrinterState(it.current());
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}
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}
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}
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void KMLprManager::insertHandler(LprHandler *handler)
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{
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m_handlers.insert(handler->name(), handler);
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m_handlerlist.append(handler);
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kdDebug() << "Handler: " << handler->name() << endl;
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}
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void KMLprManager::initHandlers()
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{
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m_handlers.clear();
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m_handlerlist.clear();
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insertHandler(new MaticHandler(this));
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insertHandler(new ApsHandler(this));
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insertHandler(new LPRngToolHandler(this));
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// now load external handlers
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TQStringList l = TDEGlobal::dirs()->findAllResources("data", "tdeprint/lpr/*.la");
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for (TQStringList::ConstIterator it=l.begin(); it!=l.end(); ++it)
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{
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KLibrary *library = KLibLoader::self()->library(TQFile::encodeName(*it));
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if (library)
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{
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kdDebug() << "loading external handler from " << *it << endl;
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LprHandler*(*func)(KMManager*) = (LprHandler*(*)(KMManager*))(library->symbol("create_handler"));
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if (func)
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insertHandler(func(this));
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else
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kdDebug() << "couldn't find the symbol 'create_handler'" << endl;
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}
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}
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// default handler
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insertHandler(new LprHandler("default", this));
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}
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LprHandler* KMLprManager::findHandler(KMPrinter *prt)
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{
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TQString handlerstr(prt->option("kde-lpr-handler"));
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LprHandler *handler(0);
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if (handlerstr.isEmpty() || (handler = m_handlers.find(handlerstr)) == NULL)
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{
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return NULL;
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}
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return handler;
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}
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PrintcapEntry* KMLprManager::findEntry(KMPrinter *prt)
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{
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PrintcapEntry *entry = m_entries.find(prt->printerName());
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if (!entry)
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{
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return NULL;
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}
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return entry;
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}
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bool KMLprManager::completePrinter(KMPrinter *prt)
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{
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LprHandler *handler = findHandler(prt);
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PrintcapEntry *entry = findEntry(prt);
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if (handler && entry)
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return handler->completePrinter(prt, entry, false);
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return false;
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}
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bool KMLprManager::completePrinterShort(KMPrinter *prt)
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{
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LprHandler *handler = findHandler(prt);
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PrintcapEntry *entry = findEntry(prt);
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if (!handler || !entry)
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return false;
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return handler->completePrinter(prt, entry, true);
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}
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void KMLprManager::checkPrinterState(KMPrinter *prt)
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{
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if (m_lpchelper)
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{
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KMPrinter::PrinterState st = m_lpchelper->state(prt);
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prt->setState(st);
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prt->setAcceptJobs(!(st & KMPrinter::Rejecting));
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}
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else
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{
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prt->setState(KMPrinter::Idle);
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prt->setAcceptJobs(true);
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}
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}
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DrMain* KMLprManager::loadPrinterDriver(KMPrinter *prt, bool config)
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{
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if (!prt)
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return NULL;
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LprHandler *handler = findHandler(prt);
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PrintcapEntry *entry = findEntry(prt);
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if (handler && entry)
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{
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DrMain *driver = handler->loadDriver(prt, entry, config);
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if (driver)
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driver->set("handler", handler->name());
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return driver;
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}
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return NULL;
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}
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DrMain* KMLprManager::loadFileDriver(const TQString& filename)
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{
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int p = filename.find('/');
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TQString handler_str = (p != -1 ? filename.left(p) : TQString::fromLatin1("default"));
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LprHandler *handler = m_handlers.find(handler_str);
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if (handler)
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{
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DrMain *driver = handler->loadDbDriver(filename);
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if (driver)
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driver->set("handler", handler->name());
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return driver;
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}
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return NULL;
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}
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bool KMLprManager::enablePrinter(KMPrinter *prt, bool state)
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{
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TQString msg;
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if (!m_lpchelper->enable(prt, state, msg))
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{
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setErrorMsg(msg);
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return false;
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}
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return true;
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}
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bool KMLprManager::startPrinter(KMPrinter *prt, bool state)
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{
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TQString msg;
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if (!m_lpchelper->start(prt, state, msg))
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{
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setErrorMsg(msg);
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return false;
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}
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return true;
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}
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bool KMLprManager::savePrinterDriver(KMPrinter *prt, DrMain *driver)
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{
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LprHandler *handler = findHandler(prt);
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PrintcapEntry *entry = findEntry(prt);
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if (handler && entry)
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{
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bool mustSave(false);
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if (handler->savePrinterDriver(prt, entry, driver, &mustSave))
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{
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if (mustSave)
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return savePrintcapFile();
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return true;
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}
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}
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return false;
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}
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bool KMLprManager::savePrintcapFile()
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{
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if (!LprSettings::self()->isLocalPrintcap())
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{
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setErrorMsg(i18n("The printcap file is a remote file (NIS). It cannot be written."));
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return false;
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}
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TQFile f(LprSettings::self()->printcapFile());
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if (f.open(IO_WriteOnly))
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{
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TQTextStream t(&f);
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TQDictIterator<PrintcapEntry> it(m_entries);
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for (; it.current(); ++it)
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{
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it.current()->writeEntry(t);
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}
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return true;
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}
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else
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{
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setErrorMsg(i18n("Unable to save printcap file. Check that "
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"you have write permissions for that file."));
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return false;
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}
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}
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bool KMLprManager::createPrinter(KMPrinter *prt)
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{
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// remove existing printcap entry
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PrintcapEntry *oldEntry = m_entries.find(prt->printerName());
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// look for the handler and re-create entry
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LprHandler *handler(0);
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// To look for the handler, either we base ourselves
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// on the driver (1: new printer, 2: modifying driver)
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// or we use the handler of the existing printer
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// (modifying something else, handler stays the same)
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if (prt->driver())
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handler = m_handlers.find(prt->driver()->get("handler"));
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else if (oldEntry)
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handler = findHandler(prt);
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else
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handler = m_handlers.find("default");
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if (!handler)
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{
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setErrorMsg(i18n("Internal error: no handler defined."));
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return false;
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}
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prt->setOption("kde-lpr-handler", handler->name());
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// we reload the driver if the printer object doesn't have one
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// and there's an old entry (sometimes needed to keep the backend
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// like in Foomatic)
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if (!prt->driver() && oldEntry)
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prt->setDriver(handler->loadDriver(prt, oldEntry, true));
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TQString sd = LprSettings::self()->baseSpoolDir();
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if (sd.isEmpty())
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{
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setErrorMsg(i18n("Couldn't determine spool directory. See options dialog."));
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return false;
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}
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sd.append("/").append(prt->printerName());
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if (!TDEStandardDirs::makeDir(sd, 0755))
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{
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setErrorMsg(i18n("Unable to create the spool directory %1. Check that you "
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"have the required permissions for that operation.").arg(sd));
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return false;
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}
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PrintcapEntry *entry = handler->createEntry(prt);
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if (!entry)
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return false; // error should be set in the handler
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// old entry can be removed now
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m_entries.remove(prt->printerName());
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entry->name = prt->printerName();
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entry->addField("sh", Field::Boolean);
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entry->addField("mx", Field::Integer, "0");
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entry->addField("sd", Field::String, sd);
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if (!prt->option("kde-aliases").isEmpty())
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entry->aliases += TQStringList::split("|", prt->option("kde-aliases"), false);
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// insert the new entry and save printcap file
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m_entries.insert(prt->printerName(), entry);
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bool result = savePrintcapFile();
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if (result)
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{
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if (prt->driver())
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{
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result = handler->savePrinterDriver(prt, entry, prt->driver());
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}
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// in case of LPRng, we need to tell the daemon about new printer
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if (LprSettings::self()->mode() == LprSettings::LPRng)
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{
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TQString msg;
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if (!m_lpchelper->restart(msg))
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{
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setErrorMsg(i18n("The printer has been created but the print daemon "
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"could not be restarted. %1").arg(msg));
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return false;
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}
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}
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}
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return result;
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}
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bool KMLprManager::removePrinter(KMPrinter *prt)
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{
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LprHandler *handler = findHandler(prt);
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PrintcapEntry *entry = findEntry(prt);
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if (handler && entry)
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{
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if (handler->removePrinter(prt, entry))
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{
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TQString sd = entry->field("sd");
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// first try to save the printcap file, and if
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// successful, remove the spool directory
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m_entries.take(prt->printerName());
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bool status = savePrintcapFile();
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if (status)
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{
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// printcap file saved, entry can be deleted now
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delete entry;
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status = (::system(TQFile::encodeName("rm -rf " + TDEProcess::quote(sd))) == 0);
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if (!status)
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setErrorMsg(i18n("Unable to remove spool directory %1. "
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"Check that you have write permissions "
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"for that directory.").arg(sd));
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return status;
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}
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else
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// push back the non-removed entry
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m_entries.insert(prt->printerName(), entry);
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}
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}
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return false;
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}
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TQString KMLprManager::driverDbCreationProgram()
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{
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return TQString::fromLatin1("make_driver_db_lpr");
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}
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TQString KMLprManager::driverDirectory()
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{
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TQPtrListIterator<LprHandler> it(m_handlerlist);
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TQString dbDirs;
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for (; it.current(); ++it)
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{
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TQString dir = it.current()->driverDirectory();
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if (!dir.isEmpty())
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dbDirs.append(dir).append(":");
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}
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if (!dbDirs.isEmpty())
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dbDirs.truncate(dbDirs.length()-1);
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return dbDirs;
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}
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TQString KMLprManager::printOptions(KPrinter *prt)
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{
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KMPrinter *mprt = findPrinter(prt->printerName());
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TQString opts;
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if (mprt)
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{
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LprHandler *handler = findHandler(mprt);
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if (handler)
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return handler->printOptions(prt);
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}
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return TQString::null;
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}
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void KMLprManager::createPluginActions(TDEActionCollection *coll)
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{
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TDEAction *act = new TDEAction(i18n("&Edit printcap Entry..."), "tdeprint_report", 0, this, TQT_SLOT(slotEditPrintcap()), coll, "plugin_editprintcap");
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act->setGroup("plugin");
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}
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void KMLprManager::validatePluginActions(TDEActionCollection *coll, KMPrinter *prt)
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{
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m_currentprinter = prt;
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// FIXME: disabled until completion
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coll->action("plugin_editprintcap")->setEnabled(0 && hasManagement() && prt && !prt->isSpecial());
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}
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void KMLprManager::slotEditPrintcap()
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{
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if (!m_currentprinter ||
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KMessageBox::warningContinueCancel(NULL,
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i18n("Editing a printcap entry manually should only be "
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"done by confirmed system administrator. This may "
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"prevent your printer from working. Do you want to "
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"continue?"), TQString::null, KStdGuiItem::cont(),
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"editPrintcap") == KMessageBox::Cancel)
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return;
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PrintcapEntry *entry = findEntry(m_currentprinter);
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EditEntryDialog dlg(entry, NULL);
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if (dlg.exec())
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{
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}
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}
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TQString KMLprManager::stateInformation()
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{
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return i18n("Spooler type: %1").arg(LprSettings::self()->mode() == LprSettings::LPR ? "LPR (BSD compatible)" : "LPRng");
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}
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#include "kmlprmanager.moc"
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