/*
* @(#)DataSource.java 1.27 02/08/21
*
* Copyright (c) 1996-2002 Sun Microsystems, Inc. All rights reserved.
*/
package com.sun.media.protocol;
import java.awt.Component;
import java.lang.reflect.Method;
import java.lang.reflect.Constructor;
import java.io.*;
import java.net.*;
import javax.media.Manager;
import javax.media.Time;
import javax.media.MediaLocator;
import javax.media.ExtendedCachingControl;
import javax.media.DownloadProgressListener;
import javax.media.protocol.*;
import com.sun.media.util.*;
import com.sun.media.JMFSecurity;
import com.sun.media.IESecurity;
import com.sun.media.JMFSecurityManager;
import com.sun.media.ui.CacheControlComponent;
import com.ms.security.PermissionID;
import com.ms.security.PolicyEngine;
public class DataSource extends PullDataSource {
protected boolean connected = false;
private String contentType = null;
private PullSourceStream[] pssArray = new PullSourceStream[1];
private CachedPullSourceStream cachedStream = null;
private long contentLength = SourceStream.LENGTH_UNKNOWN; // -1
private InputStream inputStream;
private String fileSeparator = System.getProperty("file.separator");
private boolean downLoadThreadStarted = false;
private boolean isEnabledCaching = false;
private ExtendedCachingControl[] cachingControls = new ExtendedCachingControl[0];
private static JMFSecurity jmfSecurity = null;
private static boolean securityPrivelege=false;
private Method m[] = new Method[1];
private Class cl[] = new Class[1];
private Object args[][] = new Object[1][0];
static {
try {
jmfSecurity = JMFSecurityManager.getJMFSecurity();
securityPrivelege = true;
} catch (SecurityException e) {
}
}
public String getContentType() {
if (!connected)
return null;
return contentType;
}
public void connect() throws IOException {
if (connected)
return;
MediaLocator locator = getLocator();
if (locator == null) {
throw(new IOException(this + ": connect() failed"));
}
URL url;
URLConnection urlC;
try {
url = locator.getURL();
urlC = url.openConnection(); // This will not throw security exception
urlC.setAllowUserInteraction(true);
} catch (MalformedURLException e) {
// System.err.println(getLocator() +
// ": Don't know how to deal with non-URL locator yet!");
throw(new IOException(this + ": connect() failed"));
}
String protocol = url.getProtocol();
// Note that even if we don't have connect privileges we can play
// media from the same server from which the applet is downloaded.
// Try to see if you can getInputStream without asking for
// connect privilege
boolean needConnectPermission = true;
try {
inputStream = urlC.getInputStream();
needConnectPermission = false;
// System.out.println("got getInputStream without asking for security needConnectPermission " + needConnectPermission);
} catch (Throwable e) {
// System.err.println("Unable to getInputStream without asking for permission " + e);
}
if (inputStream == null) {
if ( /*securityPrivelege &&*/ (jmfSecurity != null) ) {
try {
if (jmfSecurity.getName().startsWith("jmf-security")) {
jmfSecurity.requestPermission(m, cl, args, JMFSecurity.CONNECT);
m[0].invoke(cl[0], args[0]);
} else if (jmfSecurity.getName().startsWith("internet")) {
PolicyEngine.checkPermission(PermissionID.NETIO);
PolicyEngine.assertPermission(PermissionID.NETIO);
}
} catch (Exception e) {
if (JMFSecurityManager.DEBUG) {
System.err.println("Unable to get connect " +
" privilege " + e);
}
jmfSecurity.permissionFailureNotification(JMFSecurity.CONNECT);
throw new IOException("Unable to get connect permission" + e.getMessage());
// securityPrivelege = false;
}
}
try {
if ( (jmfSecurity != null) && (jmfSecurity.getName().startsWith("jdk12"))) {
Constructor cons = jdk12ConnectionAction.cons;
inputStream = (InputStream) jdk12.doPrivM.invoke(
jdk12.ac,
new Object[] {
cons.newInstance(
new Object[] {
urlC,
})});
} else {
inputStream = urlC.getInputStream();
}
} catch (Throwable e) {
// System.err.println("Unable to open a URL connection " + e);
throw new IOException(JMFI18N.getResource("error.connectionerror") +
e.getMessage());
}
}
if (inputStream == null) {
throw new IOException(JMFI18N.getResource("error.connectionerror") +
"Unable to open a URL connection");
}
if (protocol.equals("ftp")) {
contentType = "content/unknown";
// The contentType will be obtained after the
// getCorrectedContentType call
} else {
contentType = urlC.getContentType();
contentLength = urlC.getContentLength();
// System.out.println("contentLength is " + contentLength);
}
contentType = ContentType.getCorrectedContentType(contentType,
locator.getRemainder());
contentType = ContentDescriptor.mimeTypeToPackageName(contentType);
// System.out.println("contentType is " + contentType);
boolean cachingRequested = ((Boolean) Manager.getHint(Manager.CACHING)).booleanValue();
// Don't do caching for hotmedia or flash
if ( contentType.endsWith(".mvr") ||
contentType.endsWith("x_shockwave_flash") ||
contentType.endsWith("futuresplash") ) {
// System.err.println("Caching not done for hotmedia or flash");
cachingRequested = false;
}
String filePrefix = null;
if ( cachingRequested ) {
// user wants caching. check to see if caching is allowed
filePrefix = Manager.getCacheDirectory();
if (filePrefix != null) {
Object allowCachingObj = com.sun.media.util.Registry.get("secure.allowCaching");
if (allowCachingObj != null) {
isEnabledCaching = ((Boolean) allowCachingObj).booleanValue();
}
}
}
if (isEnabledCaching) {
// TODO: remove file name extension, eg .mov from cache file
String fileName = filePrefix + fileSeparator +
generateFileName(getLocator().getRemainder());
try {
cachedStream = new
CachedPullSourceStream(inputStream, fileName, contentLength, protocol);
pssArray[0] = cachedStream;
cachingControls = new ExtendedCachingControl[1];
cachingControls[0] = new CachingControl(cachedStream);
com.sun.media.Log.comment("Caching in " + filePrefix);
} catch(IOException e) {
isEnabledCaching = false;
}
}
if (!isEnabledCaching) {
try {
pssArray[0] = new BasicPullSourceStream(url,
inputStream,
contentLength,
needConnectPermission
);
cachedStream=null;
} catch(Exception ie) {
pssArray[0] = null;
throw new IOException(JMFI18N.getResource("error.connectionerror") +
ie.getMessage());
}
}
connected = true;
}
public void disconnect() {
if (!connected)
return;
if (cachedStream != null) {
cachedStream.close();
cachedStream = null;
}
pssArray[0] = null;
connected = false;
}
public void start() throws IOException {
if (!connected)
return;
// TODO: see if you need downLoadThreadStarted
if (cachedStream != null) {
if (!downLoadThreadStarted) {
cachedStream.startDownload();
downLoadThreadStarted = true;
} else {
cachedStream.resumeDownload();
}
}
}
public void stop() throws IOException { // TODO
if (!connected)
return;
// if (cachedStream != null) {
// cachedStream.pauseDownload();
// }
}
public PullSourceStream[] getStreams() {
return pssArray;
}
public Time getDuration() {
return null;
}
public Object[] getControls() {
return cachingControls;
}
public Object getControl(String controlType) {
if ( (cachingControls.length > 0) &&
(controlType.equals("javax.media.CachingControl")) ) {
return cachingControls[0];
} else {
return null;
}
}
// TODO: can be moved into a file-utils file
// Generate a new file name by combining actual filename
// + a random number + extension.
static public String generateFileName(String infile) {
String filename, ext = null;
int sepindex = 0;
java.util.Random generator = new java.util.Random();
int dotindex = infile.lastIndexOf('.');
int suffix = generator.nextInt();
//
// if dotindex is not found, it implies extension
// doesn't exist. Then set the dotindex to the
// length of the input file, infile.
if (dotindex != -1) {
ext = new String(infile.substring(dotindex));
} else {
dotindex = infile.length();
}
sepindex = infile.lastIndexOf(File.separatorChar);
// some URL's on Wintel use either slash. So should we.
sepindex = Math.max(infile.lastIndexOf('/'), sepindex);
//
// If sepindex equals to -1, the input file name doesn't
// have a separator. Copy the filename from 0 up to the
// the extension.
if (sepindex >= dotindex) {
dotindex = infile.length();
ext = null;
}
filename = infile.substring(sepindex + 1, dotindex);
String in;
if (ext != null)
in = new String(filename + suffix + ext);
else
in = new String(filename + suffix);
return convertNonAlphaNumericToUnderscore(in);
}
// Convert all non-alpha-numeric characters other than periods
// to underscores (_).
private static String convertNonAlphaNumericToUnderscore(String in) {
if (in == null)
return null;
// ... run through each char and convert
// !([A-Za-z0--9]) -> '_'
int len = in.length();
char nm[] = new char[len];
in.getChars(0, len, nm, 0);
for (int i = 0; i < len; i++) {
char c = nm[i];
if (!(c == '.' ||
'A' <= c && c <= 'Z' ||
'a' <= c && c <= 'z' ||
'0' <= c && c <= '9')) {
nm[i] = '_';
}
}
return new String(nm);
}
class CachingControl implements javax.media.ExtendedCachingControl {
private CacheControlComponent controlComponent;
private Component progressBar;
private CachedPullSourceStream cpss;
CachingControl(CachedPullSourceStream cpss) {
// TODO: CacheControlComponent may need cleanup
this.cpss = cpss;
controlComponent = new CacheControlComponent(this, null);
progressBar = controlComponent.getProgressBar();
}
// What is the purpose of this method in CachingControl? ?
// Should we implement it by returning true if the
// dowload thread is alive?
public boolean isDownloading() {
return cpss.isDownloading();
}
public long getContentLength() {
return contentLength;
}
public long getContentProgress() {
return cpss.getContentProgress();
}
public Component getProgressBarComponent() {
return progressBar;
}
public Component getControlComponent() {
return controlComponent;
}
public void pauseDownload() {
cpss.pauseDownload();
}
public void resumeDownload() {
cpss.resumeDownload();
}
public long getStartOffset() {
return cpss.getStartOffset();
}
public long getEndOffset() {
return cpss.getEndOffset();
}
public void setBufferSize(Time t) {
//TODO
}
public Time getBufferSize() {
return null; // TODO
}
public void addDownloadProgressListener(DownloadProgressListener l,
int numKiloBytes) {
cpss.addDownloadProgressListener(l, numKiloBytes);
}
public void removeDownloadProgressListener(DownloadProgressListener l) {
cpss.removeDownloadProgressListener(l);
}
}
}
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