kmwlpd.cpp
00001 /* 00002 * This file is part of the KDE libraries 00003 * Copyright (c) 2001 Michael Goffioul <tdeprint@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 <config.h> 00021 #include "kmwlpd.h" 00022 #include "kmwizard.h" 00023 #include "kmprinter.h" 00024 00025 #include <kurl.h> 00026 #include <tdelocale.h> 00027 #include <tqlabel.h> 00028 #include <kdebug.h> 00029 #include <tqlineedit.h> 00030 #include <tdemessagebox.h> 00031 #include <kextsock.h> 00032 00033 static bool checkLpdQueue(const char *host, const char *queue); 00034 00035 //******************************************************************************************************** 00036 00037 KMWLpd::KMWLpd(TQWidget *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(TQString& 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::warningContinueCancel(this, i18n("Cannot find queue %1 on server %2; do you want to continue anyway?").arg(text(1)).arg(text(0))) == KMessageBox::Cancel) 00062 return false; 00063 } 00064 return true; 00065 } 00066 00067 void KMWLpd::updatePrinter(KMPrinter *p) 00068 { 00069 QString dev = TQString::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.tqwriteBlock(res, strlen(res)) != (TQ_LONG)(strlen(res))) 00085 return false; 00086 00087 char buf[1024] = {0}; 00088 int n, tot(1); 00089 while ((n = sock.tqreadBlock(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 }