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321 lines
8.0 KiB
321 lines
8.0 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 "lpchelper.h"
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#include "kpipeprocess.h"
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#include "kmjob.h"
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#include "lprsettings.h"
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#include <kstandarddirs.h>
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#include <tqtextstream.h>
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#include <tqregexp.h>
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#include <kdebug.h>
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#include <tdelocale.h>
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#include <tdeprocess.h>
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#include <stdlib.h>
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static TQString execute(const TQString& cmd)
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{
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KPipeProcess proc;
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TQString output;
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if (proc.open(cmd))
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{
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TQTextStream t(&proc);
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while (!t.atEnd())
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output.append(t.readLine()).append("\n");
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proc.close();
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}
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return output;
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}
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LpcHelper::LpcHelper(TQObject *parent, const char *name)
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: TQObject(parent, name)
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{
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// look for the "lpc" executable. Use the PATH variable and
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// add some specific dirs.
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TQString PATH = getenv("PATH");
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PATH.append(":/usr/sbin:/usr/local/sbin:/sbin:/opt/sbin:/opt/local/sbin");
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m_exepath = TDEStandardDirs::findExe("lpc", PATH);
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m_checkpcpath = TDEStandardDirs::findExe("checkpc", PATH);
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m_lprmpath = TDEStandardDirs::findExe("lprm");
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}
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LpcHelper::~LpcHelper()
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{
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}
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KMPrinter::PrinterState LpcHelper::state(const TQString& prname) const
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{
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if (m_state.contains(prname))
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return m_state[prname];
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return KMPrinter::Unknown;
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}
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KMPrinter::PrinterState LpcHelper::state(KMPrinter *prt) const
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{
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return state(prt->printerName());
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}
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void LpcHelper::parsetStatusLPR(TQTextStream &t)
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{
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TQString printer, line;
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int p(-1);
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while (!t.atEnd())
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{
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line = t.readLine();
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if (line.isEmpty())
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continue;
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else if (!line[0].isSpace() && (p = line.find(':')) != -1)
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{
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printer = line.left(p);
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m_state[printer] = KMPrinter::Idle;
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}
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else if (line.find("printing is disabled") != -1)
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{
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if (!printer.isEmpty())
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m_state[printer] = KMPrinter::PrinterState((KMPrinter::Stopped) | (m_state[printer] & ~KMPrinter::StateMask));
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}
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else if (line.find("queuing is disabled") != -1)
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{
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if (!printer.isEmpty())
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m_state[printer] = KMPrinter::PrinterState((KMPrinter::Rejecting) | (m_state[printer] & KMPrinter::StateMask));
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}
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else if (line.find("entries") != -1)
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{
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if (!printer.isEmpty() &&
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(m_state[printer] & KMPrinter::StateMask) != KMPrinter::Stopped &&
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line.find("no entries") == -1)
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m_state[printer] = KMPrinter::PrinterState((m_state[printer] & ~KMPrinter::StateMask) | KMPrinter::Processing);
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}
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}
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}
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void LpcHelper::parsetStatusLPRng(TQTextStream& t)
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{
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TQStringList l;
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int p(-1);
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TQString printer;
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while (!t.atEnd())
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if (t.readLine().stripWhiteSpace().startsWith("Printer"))
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break;
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while (!t.atEnd())
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{
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l = TQStringList::split(TQRegExp("\\s"), t.readLine(), false);
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if (l.count() < 4)
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continue;
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p = l[0].find('@');
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if (p == 0)
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printer = l[0];
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else
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printer = l[0].left(p);
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int st(0);
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if (l[1] == "disabled")
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st = KMPrinter::Stopped;
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else if (l[3] != "0")
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st = KMPrinter::Processing;
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else
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st = KMPrinter::Idle;
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if (l[2] == "disabled")
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st |= KMPrinter::Rejecting;
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m_state[printer] = KMPrinter::PrinterState(st);
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}
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}
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void LpcHelper::updateStates()
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{
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KPipeProcess proc;
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m_state.clear();
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if (!m_exepath.isEmpty() && proc.open(m_exepath + " status all"))
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{
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TQTextStream t(&proc);
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switch (LprSettings::self()->mode())
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{
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default:
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case LprSettings::LPR:
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parsetStatusLPR(t);
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break;
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case LprSettings::LPRng:
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parsetStatusLPRng(t);
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break;
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}
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proc.close();
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}
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}
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bool LpcHelper::enable(KMPrinter *prt, bool state, TQString& msg)
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{
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int st = m_state[prt->printerName()] & KMPrinter::StateMask;
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if (changeState(prt->printerName(), (state ? "enable" : "disable"), msg))
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{
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m_state[prt->printerName()] = KMPrinter::PrinterState((state ? KMPrinter::Rejecting : 0) | st);
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return true;
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}
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return false;
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}
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bool LpcHelper::start(KMPrinter *prt, bool state, TQString& msg)
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{
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int rej = m_state[prt->printerName()] & ~KMPrinter::StateMask;
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if (changeState(prt->printerName(), (state ? "start" : "stop"), msg))
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{
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m_state[prt->printerName()] = KMPrinter::PrinterState((state ? KMPrinter::Idle : KMPrinter::Stopped) | rej);
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return true;
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}
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return false;
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}
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// status
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// 0 : success
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// -1 : permission denied
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// -2 : unknown printer
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// 1 : unknown error
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int LpcHelper::parseStateChangeLPR(const TQString& result, const TQString& printer)
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{
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if (result.startsWith(printer + ":"))
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return 0;
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else if (result.startsWith("?Privileged"))
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return -1;
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else if (result.startsWith("unknown"))
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return -2;
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else
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return 1;
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}
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static TQString lprngAnswer(const TQString& result, const TQString& printer)
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{
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int p, q;
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p = result.find("\n" + printer);
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if (p != -1)
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{
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q = result.find(':', p)+2;
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p = result.find('\n', q);
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TQString answer = result.mid(q, p-q).stripWhiteSpace();
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return answer;
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}
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return TQString::null;
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}
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int LpcHelper::parseStateChangeLPRng(const TQString& result, const TQString& printer)
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{
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TQString answer = lprngAnswer(result, printer);
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if (answer == "no")
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return -1;
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else if (answer == "disabled" || answer == "enabled" || answer == "started" || answer == "stopped")
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return 0;
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else
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return 1;
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}
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bool LpcHelper::changeState(const TQString& printer, const TQString& op, TQString& msg)
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{
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if (m_exepath.isEmpty())
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{
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msg = i18n("The executable %1 couldn't be found in your PATH.").arg("lpc");
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return false;
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}
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TQString result = execute(m_exepath + " " + op + " " + TDEProcess::quote(printer));
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int status;
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switch (LprSettings::self()->mode())
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{
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default:
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case LprSettings::LPR:
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status = parseStateChangeLPR(result, printer);
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break;
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case LprSettings::LPRng:
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status = parseStateChangeLPRng(result, printer);
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break;
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}
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switch (status)
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{
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case 0:
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break;
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case -1:
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msg = i18n("Permission denied.");
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break;
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case -2:
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msg = i18n("Printer %1 does not exist.").arg(printer);
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break;
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default:
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case 1:
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msg = i18n("Unknown error: %1").arg(result.replace(TQRegExp("\\n"), " "));
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break;
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}
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return (status == 0);
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}
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bool LpcHelper::removeJob(KMJob *job, TQString& msg)
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{
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if (m_lprmpath.isEmpty())
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{
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msg = i18n("The executable %1 couldn't be found in your PATH.").arg("lprm");
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return false;
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}
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TQString result = execute(m_lprmpath + " -P " + TDEProcess::quote(job->printer()) + " " + TQString::number(job->id()));
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if (result.find("dequeued") != -1)
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return true;
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else if (result.find("Permission denied") != -1 || result.find("no permissions") != -1)
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msg = i18n("Permission denied.");
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else
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msg = i18n("Execution of lprm failed: %1").arg(result);
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return false;
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}
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// LPRng only
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bool LpcHelper::changeJobState(KMJob *job, int state, TQString& msg)
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{
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if (m_lprmpath.isEmpty())
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{
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msg = i18n("The executable %1 couldn't be found in your PATH.").arg("lpc");
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return false;
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}
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TQString result = execute(m_exepath + (state == KMJob::Held ? " hold " : " release ") + TDEProcess::quote(job->printer()) + " " + TQString::number(job->id()));
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TQString answer = lprngAnswer(result, job->printer());
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if (answer == "no")
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{
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msg = i18n("Permission denied.");
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return false;
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}
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else
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return true;
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}
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bool LpcHelper::restart(TQString& msg)
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{
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TQString s;
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if (m_exepath.isEmpty())
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s = "lpc";
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else if (m_checkpcpath.isEmpty())
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s = "checkpc";
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if (!s.isEmpty())
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{
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msg = i18n("The executable %1 couldn't be found in your PATH.").arg(s);
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return false;
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}
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::system(TQFile::encodeName(m_exepath + " reread"));
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::system(TQFile::encodeName(m_checkpcpath + " -f"));
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return true;
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}
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