/*

 * Copyright (c) 2000, 2014, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package sun.print;

import java.net.URI;

import java.net.URL;

import java.io.BufferedInputStream;

import java.io.BufferedOutputStream;

import java.io.BufferedReader;

import java.io.BufferedWriter;

import java.io.File;

import java.io.FileOutputStream;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.io.OutputStream;

import java.io.OutputStreamWriter;

import java.io.IOException;

import java.io.PrintWriter;

import java.io.Reader;

import java.io.StringWriter;

import java.nio.file.Files;

import java.util.Vector;

import javax.print.CancelablePrintJob;

import javax.print.Doc;

import javax.print.DocFlavor;

import javax.print.PrintService;

import javax.print.PrintException;

import javax.print.event.PrintJobEvent;

import javax.print.event.PrintJobListener;

import javax.print.event.PrintJobAttributeListener;

import javax.print.attribute.Attribute;

import javax.print.attribute.AttributeSetUtilities;

import javax.print.attribute.DocAttributeSet;

import javax.print.attribute.HashPrintJobAttributeSet;

import javax.print.attribute.HashPrintRequestAttributeSet;

import javax.print.attribute.PrintJobAttribute;

import javax.print.attribute.PrintJobAttributeSet;

import javax.print.attribute.PrintRequestAttribute;

import javax.print.attribute.PrintRequestAttributeSet;

import javax.print.attribute.standard.Copies;

import javax.print.attribute.standard.Destination;

import javax.print.attribute.standard.DocumentName;

import javax.print.attribute.standard.Fidelity;

import javax.print.attribute.standard.JobName;

import javax.print.attribute.standard.JobOriginatingUserName;

import javax.print.attribute.standard.JobSheets;

import javax.print.attribute.standard.Media;

import javax.print.attribute.standard.MediaSize;

import javax.print.attribute.standard.MediaSizeName;

import javax.print.attribute.standard.OrientationRequested;

import javax.print.attribute.standard.RequestingUserName;

import javax.print.attribute.standard.NumberUp;

import javax.print.attribute.standard.Sides;

import javax.print.attribute.standard.PrinterIsAcceptingJobs;

import java.awt.print.PageFormat;

import java.awt.print.PrinterJob;

import java.awt.print.Pageable;

import java.awt.print.Paper;

import java.awt.print.Printable;

import java.awt.print.PrinterException;

public class UnixPrintJob implements CancelablePrintJob {

    private static String debugPrefix = "UnixPrintJob>> ";

    private transient Vector<PrintJobListener> jobListeners;

    private transient Vector<PrintJobAttributeListener> attrListeners;

    private transient Vector<PrintJobAttributeSet> listenedAttributeSets;

    private PrintService service;

    private boolean fidelity;

    private boolean printing = false;

    private boolean printReturned = false;

    private PrintRequestAttributeSet reqAttrSet = null;

    private PrintJobAttributeSet jobAttrSet = null;

    private PrinterJob job;

    private Doc doc;

    /* these variables used globally to store reference to the print

     * data retrieved as a stream. On completion these are always closed

     * if non-null.

     */

    private InputStream instream = null;

    private Reader reader = null;

    /* default values overridden by those extracted from the attributes */

    private String jobName = "Java Printing";

    private int copies = 1;

    private MediaSizeName mediaName = MediaSizeName.NA_LETTER;

    private MediaSize     mediaSize = MediaSize.NA.LETTER;

    private CustomMediaTray     customTray = null;

    private OrientationRequested orient = OrientationRequested.PORTRAIT;

    private NumberUp nUp = null;

    private Sides sides = null;

    UnixPrintJob(PrintService service) {

        this.service = service;

        mDestination = service.getName();

        if (PrintServiceLookupProvider.isMac()) {

            mDestination = ((IPPPrintService)service).getDest();

        }

        mDestType = UnixPrintJob.DESTPRINTER;

        JobSheets js = (JobSheets)(service.

                                      getDefaultAttributeValue(JobSheets.class));

        if (js != null && js.equals(JobSheets.NONE)) {

            mNoJobSheet = true;

        }

    }

    public PrintService getPrintService() {

        return service;

    }

    public PrintJobAttributeSet getAttributes() {

        synchronized (this) {

            if (jobAttrSet == null) {

                /* just return an empty set until the job is submitted */

                PrintJobAttributeSet jobSet = new HashPrintJobAttributeSet();

                return AttributeSetUtilities.unmodifiableView(jobSet);

            } else {

              return jobAttrSet;

            }

        }

    }

    public void addPrintJobListener(PrintJobListener listener) {

        synchronized (this) {

            if (listener == null) {

                return;

            }

            if (jobListeners == null) {

                jobListeners = new Vector<>();

            }

            jobListeners.add(listener);

        }

    }

    public void removePrintJobListener(PrintJobListener listener) {

        synchronized (this) {

            if (listener == null || jobListeners == null ) {

                return;

            }

            jobListeners.remove(listener);

            if (jobListeners.isEmpty()) {

                jobListeners = null;

            }

        }

    }

    /* Closes any stream already retrieved for the data.

     * We want to avoid unnecessarily asking the Doc to create a stream only

     * to get a reference in order to close it because the job failed.

     * If the representation class is itself a "stream", this

     * closes that stream too.

     */

    private void closeDataStreams() {

        if (doc == null) {

            return;

        }

        Object data = null;

        try {

            data = doc.getPrintData();

        } catch (IOException e) {

            return;

        }

        if (instream != null) {

            try {

                instream.close();

            } catch (IOException e) {

            } finally {

                instream = null;

            }

        }

        else if (reader != null) {

            try {

                reader.close();

            } catch (IOException e) {

            } finally {

                reader = null;

            }

        }

        else if (data instanceof InputStream) {

            try {

                ((InputStream)data).close();

            } catch (IOException e) {

            }

        }

        else if (data instanceof Reader) {

            try {

                ((Reader)data).close();

            } catch (IOException e) {

            }

        }

    }

    private void notifyEvent(int reason) {

        /* since this method should always get called, here's where

         * we will perform the clean up of any data stream supplied.

         */

        switch (reason) {

            case PrintJobEvent.DATA_TRANSFER_COMPLETE:

            case PrintJobEvent.JOB_CANCELED :

            case PrintJobEvent.JOB_FAILED :

            case PrintJobEvent.NO_MORE_EVENTS :

            case PrintJobEvent.JOB_COMPLETE :

                closeDataStreams();

        }

        synchronized (this) {

            if (jobListeners != null) {

                PrintJobListener listener;

                PrintJobEvent event = new PrintJobEvent(this, reason);

                for (int i = 0; i < jobListeners.size(); i++) {

                    listener = jobListeners.elementAt(i);

                    switch (reason) {

                        case PrintJobEvent.JOB_CANCELED :

                            listener.printJobCanceled(event);

                            break;

                        case PrintJobEvent.JOB_FAILED :

                            listener.printJobFailed(event);

                            break;

                        case PrintJobEvent.DATA_TRANSFER_COMPLETE :

                            listener.printDataTransferCompleted(event);

                            break;

                        case PrintJobEvent.NO_MORE_EVENTS :

                            listener.printJobNoMoreEvents(event);

                            break;

                        default:

                            break;

                    }

                }

            }

       }

    }

    public void addPrintJobAttributeListener(

                                  PrintJobAttributeListener listener,

                                  PrintJobAttributeSet attributes) {

        synchronized (this) {

            if (listener == null) {

                return;

            }

            if (attrListeners == null) {

                attrListeners = new Vector<>();

                listenedAttributeSets = new Vector<>();

            }

            attrListeners.add(listener);

            if (attributes == null) {

                attributes = new HashPrintJobAttributeSet();

            }

            listenedAttributeSets.add(attributes);

        }

    }

    public void removePrintJobAttributeListener(

                                        PrintJobAttributeListener listener) {

        synchronized (this) {

            if (listener == null || attrListeners == null ) {

                return;

            }

            int index = attrListeners.indexOf(listener);

            if (index == -1) {

                return;

            } else {

                attrListeners.remove(index);

                listenedAttributeSets.remove(index);

                if (attrListeners.isEmpty()) {

                    attrListeners = null;

                    listenedAttributeSets = null;

                }

            }

        }

    }

    public void print(Doc doc, PrintRequestAttributeSet attributes)

        throws PrintException {

        synchronized (this) {

            if (printing) {

                throw new PrintException("already printing");

            } else {

                printing = true;

            }

        }

        if ((service.getAttribute(PrinterIsAcceptingJobs.class)) ==

                         PrinterIsAcceptingJobs.NOT_ACCEPTING_JOBS) {

            throw new PrintException("Printer is not accepting job.");

        }

        this.doc = doc;

        /* check if the parameters are valid before doing much processing */

        DocFlavor flavor = doc.getDocFlavor();

        Object data;

        try {

            data = doc.getPrintData();

        } catch (IOException e) {

            notifyEvent(PrintJobEvent.JOB_FAILED);

            throw new PrintException("can't get print data: " + e.toString());

        }

        if (data == null) {

            throw new PrintException("Null print data.");

        }

        if (flavor == null || (!service.isDocFlavorSupported(flavor))) {

            notifyEvent(PrintJobEvent.JOB_FAILED);

            throw new PrintJobFlavorException("invalid flavor", flavor);

        }

        initializeAttributeSets(doc, attributes);

        getAttributeValues(flavor);

        // set up mOptions

        if ((service instanceof IPPPrintService) &&

            CUPSPrinter.isCupsRunning()) {

             IPPPrintService.debug_println(debugPrefix+

                        "instanceof IPPPrintService");

             if (mediaName != null) {

                 CustomMediaSizeName customMedia =

                     ((IPPPrintService)service).findCustomMedia(mediaName);

                 if (customMedia != null) {

                     mOptions = " media="+ customMedia.getChoiceName();

                 }

             }

             if (customTray != null &&

                 customTray instanceof CustomMediaTray) {

                 String choice = customTray.getChoiceName();

                 if (choice != null) {

                     mOptions += " InputSlot="+choice;

                 }

             }

             if (nUp != null) {

                 mOptions += " number-up="+nUp.getValue();

             }

             if (orient != OrientationRequested.PORTRAIT &&

                 (flavor != null) &&

                 !flavor.equals(DocFlavor.SERVICE_FORMATTED.PAGEABLE)) {

                 mOptions += " orientation-requested="+orient.getValue();

             }

             if (sides != null) {

                 mOptions += " sides="+sides;

             }

        }

        IPPPrintService.debug_println(debugPrefix+"mOptions "+mOptions);

        String repClassName = flavor.getRepresentationClassName();

        String val = flavor.getParameter("charset");

        String encoding = "us-ascii";

        if (val != null && !val.equals("")) {

            encoding = val;

        }

        if (flavor.equals(DocFlavor.INPUT_STREAM.GIF) ||

            flavor.equals(DocFlavor.INPUT_STREAM.JPEG) ||

            flavor.equals(DocFlavor.INPUT_STREAM.PNG) ||

            flavor.equals(DocFlavor.BYTE_ARRAY.GIF) ||

            flavor.equals(DocFlavor.BYTE_ARRAY.JPEG) ||

            flavor.equals(DocFlavor.BYTE_ARRAY.PNG)) {

            try {

                instream = doc.getStreamForBytes();

                if (instream == null) {

                    notifyEvent(PrintJobEvent.JOB_FAILED);

                    throw new PrintException("No stream for data");

                }

                if (!(service instanceof IPPPrintService &&

                    ((IPPPrintService)service).isIPPSupportedImages(

                                                flavor.getMimeType()))) {

                    printableJob(new ImagePrinter(instream));

                    if (service instanceof IPPPrintService) {

                        ((IPPPrintService)service).wakeNotifier();

                    } else {

                        ((UnixPrintService)service).wakeNotifier();

                    }

                    return;

                }

            } catch (ClassCastException cce) {

                notifyEvent(PrintJobEvent.JOB_FAILED);

                throw new PrintException(cce);

            } catch (IOException ioe) {

                notifyEvent(PrintJobEvent.JOB_FAILED);

                throw new PrintException(ioe);

            }

        } else if (flavor.equals(DocFlavor.URL.GIF) ||

                   flavor.equals(DocFlavor.URL.JPEG) ||

                   flavor.equals(DocFlavor.URL.PNG)) {

            try {

                URL url = (URL)data;

                if ((service instanceof IPPPrintService) &&

                    ((IPPPrintService)service).isIPPSupportedImages(

                                               flavor.getMimeType())) {

                    instream = url.openStream();

                } else {

                    printableJob(new ImagePrinter(url));

                    if (service instanceof IPPPrintService) {

                        ((IPPPrintService)service).wakeNotifier();

                    } else {

                        ((UnixPrintService)service).wakeNotifier();

                    }

                    return;

                }

            } catch (ClassCastException cce) {

                notifyEvent(PrintJobEvent.JOB_FAILED);

                throw new PrintException(cce);

            } catch (IOException e) {

                notifyEvent(PrintJobEvent.JOB_FAILED);

                throw new PrintException(e.toString());

            }

        } else if (flavor.equals(DocFlavor.CHAR_ARRAY.TEXT_PLAIN) ||

                   flavor.equals(DocFlavor.READER.TEXT_PLAIN) ||

                   flavor.equals(DocFlavor.STRING.TEXT_PLAIN)) {

            try {

                reader = doc.getReaderForText();

                if (reader == null) {

                   notifyEvent(PrintJobEvent.JOB_FAILED);

                   throw new PrintException("No reader for data");

                }

            } catch (IOException ioe) {

                notifyEvent(PrintJobEvent.JOB_FAILED);

                throw new PrintException(ioe.toString());

            }

        } else if (repClassName.equals("[B") ||

                   repClassName.equals("java.io.InputStream")) {

            try {

                instream = doc.getStreamForBytes();

                if (instream == null) {

                    notifyEvent(PrintJobEvent.JOB_FAILED);

                    throw new PrintException("No stream for data");

                }

            } catch (IOException ioe) {

                notifyEvent(PrintJobEvent.JOB_FAILED);

                throw new PrintException(ioe.toString());

            }

        } else if  (repClassName.equals("java.net.URL")) {

            /*

             * This extracts the data from the URL and passes it the content

             * directly to the print service as a file.

             * This is appropriate for the current implementation where lp or

             * lpr is always used to spool the data. We expect to revise the

             * implementation to provide more complete IPP support (ie not just

             * CUPS) and at that time the job will be spooled via IPP

             * and the URL

             * itself should be sent to the IPP print service not the content.

             */

            URL url = (URL)data;

            try {

                instream = url.openStream();

            } catch (IOException e) {

                notifyEvent(PrintJobEvent.JOB_FAILED);

                throw new PrintException(e.toString());

            }

        } else if (repClassName.equals("java.awt.print.Pageable")) {

            try {

                pageableJob((Pageable)doc.getPrintData());

                if (service instanceof IPPPrintService) {

                    ((IPPPrintService)service).wakeNotifier();

                } else {

                    ((UnixPrintService)service).wakeNotifier();

                }

                return;

            } catch (ClassCastException cce) {

                notifyEvent(PrintJobEvent.JOB_FAILED);

                throw new PrintException(cce);

            } catch (IOException ioe) {

                notifyEvent(PrintJobEvent.JOB_FAILED);

                throw new PrintException(ioe);

            }

        } else if (repClassName.equals("java.awt.print.Printable")) {

            try {

                printableJob((Printable)doc.getPrintData());

                if (service instanceof IPPPrintService) {

                    ((IPPPrintService)service).wakeNotifier();

                } else {

                    ((UnixPrintService)service).wakeNotifier();

                }