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# kmwlpd.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., 59 Temple Place - Suite 330,
    00017  *  Boston, MA 02111-1307, USA.
    00018  **/
    00019
    00020 #include <config.h>
    00021 #include "kmwlpd.h"
    00022 #include "kmwizard.h"
    00023 #include "kmprinter.h"
    00024
    00025 #include <kurl.h>
    00026 #include <klocale.h>
    00027 #include <qlabel.h>
    00028 #include <kdebug.h>
    00029 #include <qlineedit.h>
    00030 #include <kmessagebox.h>
    00031 #include <kextsock.h>
    00032
    00033 static bool checkLpdQueue(const char *host, const char *queue);
    00034
    00035 //********************************************************************************************************
    00036
    00037 KMWLpd::KMWLpd(QWidget *parent, const char *name)
    00038 : KMWInfoBase(2,parent,name)
    00039 {
    00040     m_ID = KMWizard::LPD;
    00041     m_title = i18n("LPD Queue Information");
    00042     m_nextpage = KMWizard::Driver;
    00043
    00044     setInfo(i18n("<p>Enter the information concerning the remote LPD queue; "
    00045              "this wizard will check it before continuing.</p>"));
    00046     setLabel(0,i18n("Host:"));
    00047     setLabel(1,i18n("Queue:"));
    00048 }
    00049
    00050 bool KMWLpd::isValid(QString& msg)
    00051 {
    00052     if (text(0).isEmpty() || text(1).isEmpty())
    00053     {
    00054         msg = i18n("Some information is missing.");
    00055         return false;
    00056     }
    00057
    00058     // check LPD queue
    00059     if (!checkLpdQueue(text(0).latin1(),text(1).latin1()))
    00060     {
    00061         if (KMessageBox::warningYesNo(this, i18n("Can not find queue %1 on server %2; do you want to continue anyway?").arg(text(1)).arg(text(0))) == KMessageBox::No)
    00062             return false;
    00063     }
    00064     return true;
    00065 }
    00066
    00067 void KMWLpd::updatePrinter(KMPrinter *p)
    00068 {
    00069     QString dev = QString::fromLatin1("lpd://%1/%2").arg(text(0)).arg(text(1));
    00070     p->setDevice(dev);
    00071 }
    00072
    00073 //*******************************************************************************************************
    00074
    00075 bool checkLpdQueue(const char *host, const char *queue)
    00076 {
    00077     KExtendedSocket sock(host, "printer", KExtendedSocket::streamSocket);
    00078     sock.setBlockingMode(true);
    00079     if (sock.connect() != 0)
    00080         return false;
    00081
    00082     char    res[64] = {0};
    00083     snprintf(res,64,"%c%s\n",(char)4,queue);
    00084     if (sock.writeBlock(res, strlen(res)) != (Q_LONG)(strlen(res)))
    00085         return false;
    00086
    00087     char    buf[1024] = {0};
    00088     int n, tot(1);
    00089     while ((n = sock.readBlock(res, 63)) > 0)
    00090     {
    00091         res[n] = 0;
    00092         tot += n;
    00093         if (tot >= 1024)
    00094             break;
    00095         else
    00096             strcat(buf, res);
    00097     }
    00098     sock.close();
    00099     if (strlen(buf) == 0 || strstr(buf, "unknown printer") != NULL)
    00100         return false;
    00101     return true;
    00102 }

This file is part of the documentation for kdeprint Library Version 3.4.1.
Documentation copyright © 1996-2004 the KDE developers.
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